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  • Articles  (164)
  • Analytical Chemistry and Spectroscopy  (164)
  • 1980-1984  (164)
  • 1950-1954
  • 1983  (164)
  • 1953
  • Physics  (164)
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  • Articles  (164)
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  • 1980-1984  (164)
  • 1950-1954
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  • 1
    Electronic Resource
    Electronic Resource
    Letter to the editor (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 50-50 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300120112
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  • 2
    Electronic Resource
    Electronic Resource
    Forthcoming meetings & conferences (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. vii 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300120210
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  • 3
    Electronic Resource
    Electronic Resource
    Application of the linear relationship between the reciprocal of analyte-line intensity and the reciprocal of concentration to the analysis of geological materials (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 87-90 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The linear relationship between the reciprocal of analyte-line intensity, and the reciprocal of concentration has been applied to the determination of ten major and minor elements in silicate rocks and minerals. The analyses were carried out on fused specimens of 11 rock standards, with and without added La2O3, and with and without added NaNO3. The method requires no absorption matrix effect corrections, and is ideally suited to the analysis of geological materials with a wide range of chemical composition. It clearly has the advantage of simplicity and speed, and can be applied to the analysis of samples when suitable standards are not available. The results obtained in all cases are in excellent agreement with the literature. However, the discs with La2O3 added yield results with better precision and accuracy than do those without La2O3. Na2O is normally determined on separately prepared rock powder pellets, but can be satisfactorily analysed by this method, using the La2O3 added discs, together with all of the other major and minor elements. Na2O analyses are more readily obtained using discs without added NaNO3. We, therefore, recommend that the analysis of geological materials be carried out on fused glass discs with La2O3 added and without NaNO3.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300120209
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  • 4
    Electronic Resource
    Electronic Resource
    Product news (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. viii 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300120213
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  • 5
    Electronic Resource
    Electronic Resource
    A detailed evaluation of counting losses of detectors in wavelength-dispersion x-ray spectroscopy (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 97-105 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The exponential equation R0 = R · eR0τdescribes the counting losses in wavelength-dispersive x-ray spectroscopic (WDF) detectors up to very high counting rates. The correction error can be considerably lower than 1% for a true counting rate of 7 · 105s-1. The dead time constant τ has however to be determined very accurately for this. Methods of determining τ with the desired accuracy are also described. And finally, a formula for correcting for dead time losses for two detectors in series, where each detector has a different dead time, is deduced and verified by experiment. Here again, one can calculate the true counting rate with an accuracy of 1% at a true counting rate of about 7 · 105 s-1.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300120304
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  • 6
    Electronic Resource
    Electronic Resource
    XRF analysis of trace titanium in coal using fundamental parameters (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 118-120 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The analysis of various elements in coal has become important as coal utilization increases. The application of x-ray fluorescence (XRF) to this type of analysis is complicated by matrix-correction needs and lack of matrix-matched standards. The application of fundamental parameter mathematical corrections using easily obtainable doped graphite standards is evaluated.
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/xrs.1300120308
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  • 7
    Electronic Resource
    Electronic Resource
    Call for papers (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 132-132 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300120312
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  • 8
    Electronic Resource
    Electronic Resource
    X-ray production in thin films by electrons with energies between 40 and 100 keV. 1 - Bremsstrahlung cross-sections (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 153-162 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Cross-sections for bremsstrahlung production in thin films may be derived theoretically only if certain approximations are made or if there is recourse to numerical techniques. In this paper, two approximate equations, one based on the Sommerfeld theory and the other on the Bethe-Heitler theory, are assessed for their accuracy in predicting cross-sections differential in photon energy and emergence angle when a thin foil target is bombarded with electrons with energies between 40 and 100 keV. Experimental data are presented from eight different target materials and these are processed initially to make comparisons between experimental and theoretical spectral shapes and subsequently to compare observed and predicted absolute cross-section values. Except for the heaviest target material (Au), the Bethe-Heitler theory provided a satisfactory description of all experimental observations. In contrast, the Sommerfeld theory provided a significantly inferior description of spectral shapes and consistently overestimated absolute cross-sections by 15-20%.
    Additional Material: 5 Ill.
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    URL: http://dx.doi.org/10.1002/xrs.1300120407
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  • 9
    Electronic Resource
    Electronic Resource
    Forthcoming meetings & conferences (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. v 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300120412
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  • 10
    Electronic Resource
    Electronic Resource
    The influence of the fluorescence volume on the observed yield in energy dispersive XRF analysis (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 11-18 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: It is shown that when a narrow x-ray beam is used in energy dispersive fluorescence analysis of thick, low-Z samples large deviations from the predictions of the commonly used fundamental parameter model occur. A simple method by which the effects can be studied empirically is described. An approximate model allowing a direct calculation of the effécts is introduced. The validity of the model has been confirmed experimentally.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300120105
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  • 11
    Electronic Resource
    Electronic Resource
    Determination of composition and thickness of TiNxOy films on silicon by combined x-ray and nuclear microanalysis (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 38-41 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The stoichiometry and thickness of TiNxOy films has been determined by electron microprobe and nuclear microanalysis. The difficulty arising in the electron microprobe from the interference between NKα and TiLI lines has been overcome by using a suitable Monte Carlo computing scheme. This procedure takes into account the SiKα intensity which was found to be sensitive to composition and thickness of the overlying TiNxOy film. The good agreement between electron microprobe and nuclear microanalysis results indicate the validity of the method.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300120109
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  • 12
    Electronic Resource
    Electronic Resource
    Courses (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. v 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300120113
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  • 13
    Electronic Resource
    Electronic Resource
    The estimated binary calibration curve method in the JIS x-ray fluorescence analysis of steels and standard samples necessary for the method (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 23-29 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: In the Japanese Industrial Standard for the x-ray fluorescence analysis of steels, the ‘estimated binary calibration curve’ method has been adopted. In this method, the calibration curve for the binary system, consisting of an analyte and the principal constituent elements is estimated and derived by using multicomponent standard samples. The measured x-ray intensity is first converted into a tentative analytical value from this calibration curve, and then the analytical result is derived from this tentative value using the correction procedure. In this paper, some methods and standard samples of making the estimated binary calibration curve are compared and discussed, also, the characteristics of the JIS method are described.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300120107
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  • 14
    Electronic Resource
    Electronic Resource
    A study of mathematical models for XRF spectrometry analysis of copper mattes and slags (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 121-127 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The Rasberry-Heinrich method and its three modifications (delta method, expanded square intensity method and double constant method) together with the Tertian and a strictly empirical method were used for the analysis of copper mattes and slags. The expanded square intensity method, which represents a combination of theory and empiricism, gave the most accurate results.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300120309
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  • 15
    Electronic Resource
    Electronic Resource
    Masthead (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983) 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300120401
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  • 16
    Electronic Resource
    Electronic Resource
    Comparison of some ambient aerosol samplers in combination with PIXE analysis (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 138-147 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: PIXE (particle induced x-ray emission) analysis of aerosols has been applied to four different samplers to determine sample thickness corrections, detection limits and required sampling times in different environments. The samplers (two total filter samplers, a two stage filter sampler and a cascade impactor) were used with filters made by Ghia, Millipore, Nucleopore and backings of polystyrene film, respectively. The calculations were based on the accumulation mode aerosol (particles in the 0.05-2μm diameter range) composition. Sampling times (resulting in detection limits 10 times lower than assumed aerosol concentrations) ranged from a quarter of an hour in urban, to a quarter of a day in rural and to two weeks in remote environments. These sampling times are calculated with the requirement that at least one element representing each of the following sources was detected: fossil fuel combustion (S, V and Ni), leaded petrol combustion (Br and Pb) and general industrial activities (Cr, Cu and Zn). Generally the two stage filter sampler employed with Nuclepore filters yielded the highest time resolution when specific flow rate, thickness and substrate impurities were taken into consideration. Thickness corrections based on a proton energy of 2.55 MeV and typical ambient urban and rural aerosol matrices show that elements of low atomic number such as P, S and Cl, where the x-ray self absorption effect is most important, require a 10-20% correction with a uniform deposit thickness of about 0.5 mg cm-2 and a non-nuniform (conical) deposit thickness of about 1 mg cm-2. For elements of higher atomic number than vanadium (K x-rays) the proton energy loss correction dominates. Sampling times resulting in the above mentioned deposit thicknesses were shortest for the cascade impactor while the Millipore and Nuclepore filter samplers were least critical in this respect.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300120404
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  • 17
    Electronic Resource
    Electronic Resource
    X-ray production in thin films by electrons with energies between 40 and 100 keV. 2For Part l. see p. 153. - Characteristic cross-sections and the overall x-ray spectrum (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 163-169 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Two approximate theories are considered for the production of characteristic x-rays when thin foil targets are bombarded with electrons with energies between 40 and 100 keV. One, due to Kolbenstvedt, is semi-classical in nature whilst the other, due to Bethe, contains two parameters which are normally adjusted empirically. Data from six different target materials are presented, but because errors in experimentally derived absolute cross-sections are large, a comparison is made between theoretical and observed ratios of characteristic Kα photons to bremsstrahlung photons in a 20 eV channel directly beneath the peak. By adjusting the Bethe parameters and using a modified Bethe-Heitler theory to predict the bremsstrahlung, agreement between experiment and theory of typically 10% is recorded. Finally, a means of simplifying the equations used to enable rapid calculation of x-ray spectra with a pocket calculator is indicated.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300120408
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  • 18
    Electronic Resource
    Electronic Resource
    A mobile installation for energy-dispersive multi-element x-ray fluorescence analysis for application in the field (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 175-181 
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    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The construction of a mobile XRF unit is described. It consists of a radionuclide source (109Cd), shielding, a sample exchanger for powdered samples, a semiconductor detector and an electronic measuring and evaluation system. The disadvantage of the supply of liquid nitrogen or liquid air for the semiconductor detector is avoided by use of a mobile unit for the production of liquid air constructed for this purpose. Numerous measurements were carried out at several location within the Federal Republic of Germany.
    Additional Material: 4 Ill.
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    URL: http://dx.doi.org/10.1002/xrs.1300120411
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  • 19
    Electronic Resource
    Electronic Resource
    A new method for matrix corrections by radioisotope excited x-ray fluorescence (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 148-149 
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    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: A method has been investigated which allows calculations of the absorption correction factors in the energy range 1.0-5.0 keV using 55Fe excitation source. From the experimentally-measured absorption factors between 6.0 and 20.0 keV using 109Cd excitation source, the coefficients at lower energies with the associated absorption jumps are generated through an iterative procedure.
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/xrs.1300120405
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  • 20
    Electronic Resource
    Electronic Resource
    Evaluation of a correction method for the particle-size effect in x-ray fluorescence analysis of ‘Thin’ and monolayer samples (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 134-137 
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    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The application limits of a correction method for the particle-size effect in x-ray fluorescence (XRF) analysis are estimated theoretically in the presented paper. This correction method requires the use of two sources of exciting γ-or x-radiation of different energies.1 The influence of the different values of the parameter t′ (which is a function of the linear absorption coefficients for primary and fluorescent radiation) and the influence of the relative standard deviation, Sr (resulting from counting statistics) have been taken into account in evaluating the efficiency of the method. In addition, the criteria for the selection of the optimum energies of the exciting radiation, the proper times of measurement and the activities of the sources of primary radiation are proposed. An example of the application of the proposed criteria to the determination of iron (as Fe3O4) is presented.
    Additional Material: 4 Ill.
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    URL: http://dx.doi.org/10.1002/xrs.1300120403
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  • 21
    Electronic Resource
    Electronic Resource
    Surface density measurement of pure element thin films by radioisotope x-ray fluorescence spectroscopy (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 170-172 
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    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: A method for measuring the surface density of pure element thin films using x-ray fluorescence and coherent scattering of primary radiation has been developed. The accuracy is greatly improved by intensity ratio measurements where the dependence on the accuracy of the fundamental parameters is eliminated.
    Additional Material: 2 Tab.
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    URL: http://dx.doi.org/10.1002/xrs.1300120409
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  • 22
    Electronic Resource
    Electronic Resource
    Evaluation of dead-time corrections in EDS systems (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 2-7 
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    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Two common methods of applying dead-time corrections in EDS systems, both of which are carried out internally in the electronics, are examined. The Barnhart method shows serious discrepancies when making dead-time corrections and in certain cases no correction is made at all. The problem is associated with the reliance on the fast amplifier to count all x-rays collected by the detector. In practice, however, the fast amplifier does not always succeed in carrying out this function since x-rays with energies 〈 1500 eV may fall below its threshold level. The problems become worse when a formvar window is substituted for beryllium since a greater proportion of low energy x-rays can now reach the detector. The magnitude of the discrepancy is shown also to be a function of specimen and electron accelerating voltage. Similar experiments with an EDS system using the Covell method show that no such discrepancies arise.
    Additional Material: 6 Ill.
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    URL: http://dx.doi.org/10.1002/xrs.1300120103
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  • 23
    Electronic Resource
    Electronic Resource
    Forthcoming meetings & conferences (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. vi 
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    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300120114
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  • 24
    Electronic Resource
    Electronic Resource
    A new source configuration for trace analysis of small samples by XRF (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 67-71 
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    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: A new geometry for a radioactive source was developed for the XRF determination of trace elements in the range 0.1-50 μg in samples with diameters from 2-5 mm. The new set-up was constructed with five 241Am (45mCi each) point sources. The shielding and configuration of the source, as well as the choice of appropriate collimators in the optimal shapes and dimensions, were investigated in detail. The study was carried out to establish the conditions for obtaining maximum sensitivity. The count rates and signal-to-background ratios were compared with those obtained with an annular source and showed an improvement of a factor of ∼2 in the signal-to-background ratio and of a factor of 2-9 in the peak intensity for the elements studied (29≤ Z ≤ 47).
    Additional Material: 6 Ill.
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    URL: http://dx.doi.org/10.1002/xrs.1300120205
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  • 25
    Electronic Resource
    Electronic Resource
    X-ray fluorescence analysis with a linear polarized beam after bragg reflection from a flat or a curved single crystal (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 72-78 
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    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Improvements of the detection limits in photon induced x-ray fluorescence analysis are obtained by the reduction of the radiation background using linear polarized x-rays for excitation. A single crystal where Bragg reflection takes place at an angle 20 = 90° produces linear polarized and monochromatic x-rays. The use of a single crystal instead of amorphous scattering materials increases the intensity of the polarized beam in some cases up to a factor 104. The use of curved crystals instead of standard flat crystal geometries shows a further increase in the intensity of the exciting beam in the focus line. The crystals in use for both geometries are described. Samples can be investigated in either form, liquid or solid, no special preparation technique is required. Detection limits are given for some elements, absolute amounts of 150 picogram can be detected in some cases.
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    URL: http://dx.doi.org/10.1002/xrs.1300120206
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  • 26
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    Announcement (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. vii 
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    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300120211
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  • 27
    Electronic Resource
    Electronic Resource
    Masthead (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983) 
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    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300120301
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  • 28
    Electronic Resource
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    Real time chemical analysis of phosphoric acid using energy dispersive x-ray fluorescence (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 106-110 
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    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Energy dispersive x-ray fluorescence is shown to be an effective analytical method for determination of calcium, sulfur and phosphorous concentrations in wet process phosphoric acid. Periodic monitoring of these quantities is essential to plant operation, and is presently carried out using separate wet chemical analyses. The XRF method described here has the advantages of increased speed, of multi-element determinations from a single measurement, and of having the potential for on-line use in an automatic plant control loop.
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    Properties of intrinsic germanium detectors at low engergies by escape peak spectroscopy (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 82-86 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Notes: The study of the energy resolution and linearity of germanium, x-ray detectors at very low energies is difficult due to the degradation of the spectral line shapes resulting from incomplete charge collection in the detectors's surface dead layer. The use of low-energy, K escapes peaks obviates this difficulty as they are absorbed at depths characteristic of their full-energy parent photons. Measurements have been performed using particle-induced x-ray emission analysis of targets having characteristic K and L x-ray energies just above the Ge K-edge. The escape peaks retain pure Gaussian shapes down to the noise level of the detector and open up the possibility of a selective field of high-resolution escape-peak spectroscopy.
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    The surface geometrical structure effect in x-ray fluorescence analysis of metallic samples (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 92-96 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The results of investigations into the effect of geometrical surface structure in x-ray fluorescence analysis of Cu-Ni alloy are presented. The experimental materials were samples of spectrometric standard quality, in which surfaces were especially prepared by grinding and polishing. The surface state was estimated qualitatively, using a scanning electron microscope, and quantitatively, using a profilograph, by the determination of the roughness parameters Ra and Rz. The relationships between the roughness parameters and Cu, Ni and Si fluorescent radiation intensities, as well as the scattered radiation from the x-ray tube anode element were established. The optimum range of the surface state for a given alloy has been defined.
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    Fabrication and use of permanent monitors and standards (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 115-117 
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    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Epoxy adhesive and aluminium powder have been used as binders to make permanent standards for x-ray fluorescence and diffraction. These standards are easy and cheap to fabricate and are very durable. They can be used as internal standards or calibration standards. Three methods of fabrication are proposed and compared.
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    X-ray spectroscopic studies of copper compounds and complexes in aqueous solution and polycrystalline form (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 128-131 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: K-absorption edge-shifts of copper in CuCl2—2H2O CuSo4—5H2O, Cu(NO3)2—3H2O, Cu(en)3Cl2, Cu(en)3SO4 and Cu(en)3(NO3)2 in aqueous solutions as well as in polycrystalline form were measured using the x-ray absorption spectroscopic technique. Effective charge on copper ions are estimated using the method of Gianturco and Coulson. The results of the present study reveal interesting results regarding the nature of chemical bonding. An attempt is made to interpret the results in the light of the available data on these samples.
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    Masthead (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Mass Spectrometry Reviews 2 (1983) 
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    ISSN: 0277-7037
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
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    URL: http://dx.doi.org/10.1002/mas.1280020101
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    Tandem mass spectrometry (MS/MS) instrumentation (1983)
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    Mass Spectrometry Reviews 2 (1983), S. 1-45 
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    ISSN: 0277-7037
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
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    Mass resolution in mass spectrometry/mass spectrometry (1983)
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    Mass Spectrometry Reviews 2 (1983), S. 47-76 
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    ISSN: 0277-7037
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 23 Ill.
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    Isotope effects in fragmentationThis article is based on a lecture featured at the 30th Annual Conference on Mass Spectrometry and Allied Topics, held in Honolulu, Hawaii, in June 1982, and sponsored in cooperation with the Australian and New Zealand Society for Mass Spectrometry, the Japanese Society for Medical Mass Spectrometry, and the Mass Spectrometry Society of Japan. This lecture was the second in what it is hoped will be a series of Introductory Lectures at the Annual Conferences, the inaugural lecture having been presented in Minneapolis in 1981 (1). (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Mass Spectrometry Reviews 2 (1983), S. 285-298 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    Topics: Chemistry and Pharmacology , Physics
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    Masthead (1983)
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    Mass Spectrometry Reviews 2 (1983) 
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    ISSN: 0277-7037
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
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    An x-ray spectrometer with a position-sensitive wire detector (PSD) (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 47-49 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Notes: A new crystal-type x-ray spectrometer is described, which employs a position-sensitive detector for simultaneous radiation detection in a certain energy range given by the spectrometer design. The main specifications are (a) better energy resolution and (b) longer data collection times compared with an energy-dispersive spectrometer.
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    Product news (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. vi 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    The accuracy and precision of routine energy-dispersive electron microprobe analysis of serpentine (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 59-66 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Notes: A serpentine mineral specimen used for a standard in a Materials Analysis Company Model 400 electron microprobe equipped with a Kevex Model 5000A energy dispersive sperctrometer and an on-line Hewlett-Packard 2100 computer, was repeatedly analysed during a study of serpentinization. The results of the repeated analyses were statistically analysed and show an acceptable level of accuracy and precision. The relative and absolute errors for the serpentine standard lie within the same ranges as the errors for the other standards (forsterite, enstatite, diopside, kyanite and kaersutite) used, although the standard deviations for the serpentine analyses are slightly greater. These results are within acceptable limits and indicate that serpentine can be routinely analysed by energy dispersed analysis, using a serpentine standard for magnesium and silicon determinations, with the same accuracy but with slightly lower precision than less hydrous silicates. Most elements were present in amounts between 2 to 63 wt% of the oxide in the standards used but 0.31 wt% Al2O3 present in the serpentine standard was routinely determined with acceptable results.
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    Masthead (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983) 
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    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    A new procedure of powdered sample preparation by melting for x-ray emission spectrometry (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 8-10 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Notes: A new procedure of powder sample preparation for x-ray emission analysis by melting has been worked out in detail. The mixture sample-flux was melted and cooled in graphite crucible. The resulting glass disk was ready for direct measurement. The re-fused graphite electrode of an electric arc furnace was used as the material for the graphite crucible. The dimension and shape of the crucible bottom were determined on the basis of sample holder dimension and sample behaviour during the cooling step. The reproducibility of Kα line measurement was below 1%. Resistance of the crucible to handling and the influence of graphite on Fe Kα, Ca Kα, SKα, Si Kα and Mg Kα line intensities also were investigated.
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    Quantitative x-ray fluorescence analysis by use of fundamental influence coefficients (1983)
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    X-Ray Spectrometry 12 (1983), S. 30-37 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Notes: The rigorous relationship existing between effective fundamental coefficients, as expressed by Tertian's identities, and Sherman's basic equations for x-ray fluorescence intensities is recalled. The properties of these coefficients in the case of binary systems are described, for usual as well as for some anomalous situations, and a general, accurate hyperbolic equation is suggested to account for coefficient variation with composition. The properties of effective coefficients in the general case of multicomponent systems (alloys, etc.) are then examined, and illustrated on the typical Fe—Ni—Cr ternary system, confirming the essential exactness of this approach. As a consequence, the authors propose to make use of calculated effective coefficients to apply mathematical matrix corrections, and give a first outline of the analytical procedure.
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    Masthead (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983) 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
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    URL: http://dx.doi.org/10.1002/xrs.1300120201
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    Editorial (1983)
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    X-Ray Spectrometry 12 (1983), S. 51-51 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    Editorial (1983)
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    X-Ray Spectrometry 12 (1983), S. 1-1 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    Sample analysis using gamma ray induced fluorescent x-ray emission (1983)
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    X-Ray Spectrometry 12 (1983), S. 19-22 
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    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Notes: A non-destructive method for the analysis of materials using gamma ray-induced fluorescent x-ray emission has been developed. In this method, special preparation of very thin samples in which the absorption of the incident gamma rays and the emitted fluorescent x-rays is negligible, is not needed, and the absorption correction is determined experimentally. A suitable choice of the incident gamma ray energies is made to minimise enhancement effects through selective photoionization of the elements in the sample. The method is applied to the analysis of a typical sample of the soldering material using 279 keV and 59.5 keV gamma rays from 203Hg and 241Am radioactive sources respectively. The results of the analysis are found to agree well with those obtained from the chemical analysis.
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    Application of x-ray microprobe technique to clay minerals: Vermiculite (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 42-46 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    Notes: The usual method of polishing the surface of a solid sample for examination using the x-ray microprobe technique cannot be adopted for clay minerals. A modified method is suggested and its validity is tested using vermiculite mineral. It is observed that precision of quantitative elemental analysis increases significantly according to the present pretreatment procedure; variation from values obtained by wet chemical method is 〈 1% for SiO2, MgO and Fe2O3 and 2-3% for the rest. However, values obtained with the x-ray microprobe technique vary enormously from point to point and this non-uniformity is explained in terms of the structural characteristics of the clay mineral. The variation increases with the rise in temperature of treatment due to structural modifications occurring during heat treatment. The x-ray microprobe technique has been found to be quite effective in determination of trace elements such as K and Ti.
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    The effect of elastically scattered protons on the energy resolution of x-ray detectors in PIXE measurements (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 52-58 
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    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Notes: Extensive use has been made of particle-induced x-ray emission (PIXE) analysis over the past several years. The optimization of its detection sensitivity calls for the judicious selection of several parameters including, inter alia, the beam energy used and the x-ray window thickness. Thin windows are required in order to detect the light elements whose x-ray energies are so low that they are heavily attenuated by any absorber material between the target and the detector. The choice of beam energy is dependant on the respective x-ray production cross-sections for elements of interest, the related background generated, as well as the associated beam energy degradation in the targets. These considerations often lead to a state where protons, elastically scattered from the target, have sufficient energy to penetrate the window and enter the x-ray detector. The extent to which such protons and their related secondary electron production affect the energy spectrum resolution of intrinsic germanium and Si(Li) x-ray detectors is demonstrated for a proton beam energy range from 2.1 to 3.5 MeV with a window thickness equivalent to the range of a 2.5 MeV proton.
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    Determination of brass composition and plating thickness on brass-plated wire and cord by x-ray fluorescence spectrometry (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 79-81 
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    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The control of brass composition and plating weight on brass-plated steel wire and cord used as reinforcement in tyres is generally carried out by atomic absorption spectrometry, or by polarography. These methods require a mineralization of the sample and the analysis time is very long. On account of this, we have studied a direct analytical method on wires based on x-ray fluorescence spectrometry. The mathematical method we use suppresses the influence of the cord construction and allows to calculate simultaneously the composition and thickness of the brass coating. The analytical performances, i.e. repeatability, accuracy and analysis time, are better than those prevailing with atomic absorption spectrometry or differential pulse polarography. Moreover, by dispensing with mineralization of the sample, XRFS is particularly well-fitted for a routine control in production.
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    Erratum (1983)
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    X-Ray Spectrometry 12 (1983), S. vii 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    Editorial (1983)
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    X-Ray Spectrometry 12 (1983), S. 91-91 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    Automated matrix-correction of line ratios in energy-dispersive x-ray fluorescence spectrum deconvolution (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 111-114 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    Notes: Most computer XRF-spectrum deconvolution routines make use of fixed intensity ratios for the lines from one element. The magnitude of the error that fixed ratios imply has been quantitatively evaluated for samples with a varible thickness or matrix. A procedure for routinely adapting the line ratios according to the matrix effect in every sample (by making use of the matrix information present in the scatter peaks) enhances the accuracy of the spectrum evaluation.
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    Forthcoming meetings & conferences (1983)
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    X-Ray Spectrometry 12 (1983), S. 132-132 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    Editorial (1983)
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    X-Ray Spectrometry 12 (1983), S. 133-133 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    The direct addition of Fe-55 into the sample for low Z elemental analysis by x-ray emission spectroscopyParts of this work have been funded by Conicit: S1-1149 Project (The Venezuelan National Science and Technology Foundation) and a joint project with the National Science Foundation (USA). (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 150-152 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    Notes: A new radioisotope excited x-ray fluorescence (XRF) technique which employs source-samples has been applied for the determination of low Z elements in geological materials. The source-samples is prepared by directly inserting about 100 μCi of the radioisotope (Fe-55) into about 10-20 mg of the sample in its holder and placing this directly on the face of the detector window. The precision (relative total standard deviation) of this technique for K2O%, CaO% and TiO2% is about 4% and is compared to conventional radioisotope excited XRF. Finally, the accuracy of this technique is shown by the analysis of five geological reference materials as well as compared to conventional radioisotope excited XRF.
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    K x-ray production cross-sections of Ag, Sn and Te by 32-80 MeV 32S ions (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 12 (1983), S. 173-174 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Notes: K x-ray production cross-sections of Ag, Sn and Te by 32-80 MeV 32S ions have been measured. The dependence of target K x-ray yields on the target thickness was found to be negligible in the S (64 MeV) + Ag collision system. The experimental data are compared with some theoretical predictions.
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    Mass spectrometry of iridoids (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Mass Spectrometry Reviews 2 (1983), S. 481-514 
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    ISSN: 0277-7037
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
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    Selected reviews on mass spectrometric topics: Negative ions (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Mass Spectrometry Reviews 2 (1983), S. 515-516 
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    ISSN: 0277-7037
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    Masthead (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Mass Spectrometry Reviews 2 (1983) 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    New mass spectral approaches to complex carbohydrate structure (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Mass Spectrometry Reviews 2 (1983), S. 153-221 
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    ISSN: 0277-7037
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
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    Stereochemical effects in mass spectrometry (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Mass Spectrometry Reviews 2 (1983), S. 223-284 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    High-resolution high-sensitivity mass spectrometers (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Mass Spectrometry Reviews 2 (1983), S. 299-325 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    Selected reviews on mass spectrometric topics (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Mass Spectrometry Reviews 2 (1983), S. 327-328 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Selected reviews on mass spectrometric topics (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Mass Spectrometry Reviews 2 (1983), S. 417-418 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    Masthead (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Mass Spectrometry Reviews 2 (1983) 
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    ISSN: 0277-7037
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Mass spectrometry of ammonium and iminium salts (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Mass Spectrometry Reviews 2 (1983), S. 419-446 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    Ionization techniques for nonvolatile molecules (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Mass Spectrometry Reviews 2 (1983), S. 447-480 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
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    Gas-phase chemistry of collisionally activated ions (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Mass Spectrometry Reviews 2 (1983), S. 77-148 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Announcement (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Mass Spectrometry Reviews 2 (1983), S. 329-329 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    Mass spectrometric studies on the molecular basis of xenobiotic-induced toxicities (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Mass Spectrometry Reviews 2 (1983), S. 331-387 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
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    Applications of Fourier transform mass spectrometry (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Mass Spectrometry Reviews 2 (1983), S. 389-415 
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    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 7 Ill.
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    Raman spectra of Cl3+ and Br3+ at 12 K produced from the reaction of HCl or HBr with NO2 (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 232-235 
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    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Notes: The products of the reactions of HCl or HBr with nitrogen dioxide at 12 K have been examined using Raman spectroscopy. For the NO2+HCl reaction spectroscopic evidence for Cl3+, asym-N2O2, N2O3, N2O4, ClNO2, ClNO3, NO3-, NO2-, and sym-N2O2 was found. For the reaction with HBr only Br3+, was detected due to resonance Raman enhancement effects. These results are consistent with the previously proposed gas-phase reaction scheme for HCl+NO2. However, the reaction proceeds further at low temperatures to produce Cl3+ (or Br3+). The Raman frequencies for Cl3+ were observed at 515(ν3), 462(ν1), and 236 cm-1(ν2). The Br3+ resonance Raman spectra, which represent the first well documented spectra for this species, show strong fundamental bands at 281(ν1) and 227 and 238 cm-1 (doublet for ν2) as well as an overtone doublet at 471 and 487 cm-1.
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    Vibrational, resonance Raman and electronic spectra of the μ-oxo-bis[pentacyanomanganate (III)] ion (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 259-263 
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    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
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    Notes: The resonance Raman spectra of the polycrystalline substance as well as the polarized infrared spectrum of an ordered array of small monocrystals were obtained for K7[Mn2O(CN)10]CN. Several of the bands observed in these spectra as well as in the electronic spectrum of the complex ion are assigned to expected transitions.
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    Masthead (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983) 
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    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
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    In vivo studies of nucleic acid by ultraviolet resonance Raman spectroscopy on eucaryotic living cells (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 9-10 
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    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: We observe for the first time spectra of nucleic acids of living cells, obtained by resonance Raman spectroscopy excited in the u.v. range (257 nm). This wavelength which is close to that of the maximum of absorption of the main components of nucleic acids allows the resonance Raman effect to be obtained and the fluorescent contribution of aromatic amino acids present in proteins to be avoided.
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    Spectroscopic studies of explosives: 1 - detection of nitro compounds on silica gel and carbon by non-resonant Raman spectroscopy (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 410-414 
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    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Raman spectra have been obtained from trace amounts of propanetriol trinitrate, tetramethoxymethane tetranitrate, 1,3,5-trinitro-1,3,5-triazacyclohexane and 2,4,6-trinitro-1-methylbenzene adsorbed on silica gel and on activated charcoal. Detection limits for these nitro compounds lay between 1 and 10 μg on silica gel and between 20 and 40 ng on activated charcoal.
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    Raman spectra of CdSb (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 434-436 
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    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Raman spectra of CdSb at 100 K are presented. Twenty-two out of the twenty-four predicted phonons are detected. Frequencies of different modes are low, implying motions associated with large reduced masses. Their values are comparable to those obtained from infrared measurements.
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    Time-resolved resonance Raman study of transient benzooxazolinic merocyanines (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 83-86 
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    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The time-resolved resonance Raman spectrum (excitation: 532 nm, 30 ns laser pulse; optical multichannel detection) of the short-lived species generated by UV flash irradiation of a benzooxazolinic spiropyran in toluene or benzene, has been obtained. The CW resonance Raman spectrum of a related permanent benzooxazolinic merocyanine closely resembles the spectrum of the transient species. A tentative assignment of the Raman bands is proposed in order to characterize the bonds directly involved in the π-electron delocalization of the merocyanines.
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    Raman and infrared spectra of solid carbon diselenide (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 96-98 
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    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Raman and infrared spectra of polycrystalline samples of CSe2 have been recorded at temperatures from 20-205 K. A comparison with previous results for CS2 shows that the spectra are consistent with the two substances having the same centrosymmetric orthorhombic structure. The observed spectra for CSe2, in both the lattice and molecular regions, are in good agreement with group theoretical predictions based on this structure. There is only one solid phase over the range of temperatures examined.
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    Vibrational spectra of bromocyclopropane (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 87-92 
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    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Fourier transform infrared spectra of bromocyclopropane at a resolution of 0.5 cm-1 have been recorded as well as liquid phase infrared spectra of this molecule from 4000-400 cm-1. For the first time, gas phase Raman spectra and solid phase infrared spectra of bromocyclopropane have been obtained. By combining all of the spectral data available it has been possible to assign all 21 normal modes of vibration of bromocyclopropane (as well as several overtones and combination bands) with a high degree of confidence. This proposed assignment is in excellent agreement with assignments for similar molecules and with anticipated cyclopropyl group frequencies.
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    Applications of four-channel Raman difference spectroscopy to studies in hydrogen-bonded systems (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 102-105 
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    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: We report in this work on some potential applications and advantages of the four-channel Raman detection technique developed recently at this laboratory. The capability of recording four different Raman signals simultaneously and processing them electronically by scaling of each signal in order to obtain a desired linear combination, has been fully exploited. The simultaneous measurement of I∥ and I⊥ of the Raman spectra of pyridine and a mixture of pyridine+methanol, thus allows us to derive the isotropic Raman bandwidths of ν1 and ν8b vibrations in the hydrogen-bonded species C5H5N…HOCH3 and at the same time very small frequency shifts of vibrations of the non hydrogen-bonded pyridine (in mixture) as compared to pure pyridine. The smallest shift that could be measured was 0.045 cm-1. It has been demonstrated that four-channel Raman difference spectroscopy has a distinct advantage for studying the vibrations of complex systems such as a hydrogen-bonded species.
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    UV-excited resonance Raman spectra of methyl orange and its complex with cetyltrimethylammonium bromide (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 126-129 
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    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Resonance Raman spectra of methyl organge and its ring-deuterated and 15N-azo derivatives were measured with the excitation line at 350.7 nm of a Kr+ laser, and the spectral changes on the complex formation between the dye and cetyltrimethylammonium bromide were studied. In the presence, as well as the absence, of the surfactant, the UV-excited resonance Raman spectrum of each isotope of methyl orange is appreciably different from the corresponding spectrum excited with the Ar+ 488.0 nm line. The UV-excited spectrum of the pure aqueous solution of the dye is attributed to the non-hydrated monomeric species of the dye anion responsible for the absorption band around 420 nm. The spectral pattern between 1500 and 1300 cm-1 of the mixed solution of the dye and the surfactant changes in two steps on increase of the surfactant concentration in accordance with the change of the absorption spectrum in the UV-visible region due to the formation of micelles. The UV-excited resonance Raman spectra of a cidic solutions of the isotopic methyl orange zwitterions were also meaured. By combining the data relating to the effect of pH and the concentration of the surfactant, the N—N stretching frequency in the Raman spectrum was shown to be correlated closely with the π-π* transition frequency in the absorption spectrum.
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    Raman spectra and vibrational dephasing of methylacetylenePresented in part at the VIII International Conference on Raman Spectroscopy, Bordeaux, France, September 1982. (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 253-258 
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    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The Raman spectra of gaseous and liquid methylacetylene have been recorded. The spectrum of the gas provides new data for verifying the vibrational assignments of certain A1 and E fundamentals. Some of the vibrations exhibit hot bands whose origins have been determined on the basis of their Raman intensities. The isotropic scattering for the three fundamentals in the liquid state was studied as a function of temperature. The hot band structure in the liquid state was modeled by using curve-fitting procedures and the assignments made for the gas phase. The isotropic bandwidths for the fundamentals were observed to increase with decreasing temperature, and the broadening is consistent with the existence of a weak hydrogen bond in pure methylacetylene.
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    Hyper-Raman spectra and frequency dependence of soft mode damping in SrTiO3 (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 276-283 
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    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The hyper-Raman spectra of SrTiO3 were studied in the range 85-710 K. The temperature dependance of frequencies and damping of all the vibrations, including the soft F1u and silent F2u modes, was obtained. Using the hyper-Raman spectra and a Green's function analysis, we calculated the damping function Γs(ω, T) in the frequency region 20-200 cm-1 for temperatures between 300 and 710 K. It was shown that the behavior of the soft mode damping may be described by invoking soft mode decay into two acoustic phonons (ωs→ωac+ωac) plus an additional channel via annihilation of one acoustic phonon (ωs+ωac→ω176). The temperature dependence of the phonon resonance between the soft mode and the nearest polar optical phonon (at 176 cm-1) was studied. Quantitative analysis of this phonon resonance was carried out to obtain parameters characterizing both modes: signs and relative magnitude of the hyper-Raman matrix elements; the soft mode damping; and the resonance coupling constant, which yields interference effects.
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    Vibrational spectra and force constants for trans-sodium hyponitrite (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 284-287 
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    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Laser Raman spectra of trans-sodium hyponitrite (Na2N2O2) as a solid and in aqueous solution have been recorded, together with its infrared spectrum. Polarization data for the aqueous solution Raman spectra were also determined for the first time. The results confirm the trans structure of the hyponitrite ion and also have led to a new vibrational assignment. Force constant calculations have been carried out and these accurately predict the observed frequency shifts upon isotopic substitution. The potential energy distributions were also determined and these provide a useful picture of the coupling of the vibrational modes.
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    Pulsed laser induced vibrational resonance Raman scattering of chlorophyll a dimersResearch supported by the Natural Sciences and Engineering Research Council of Canada. (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 288-290 
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    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The pulsed laser induced Raman spectrum of dry chlorophyll a (Chl a) in hexane is reported. This sample is excited with a wavelength which is in resonance with an absorption band of the Chl a dimer at 432 nm. The observed resonance Raman excitation profile for several Raman bands shows that two electronic origins of the dimer are located at 434.1 and 435.4 nm and these are assigned to a pair of pseudo exciton levels. Features of this excitation profile are used to discuss the observed Raman spectra.
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    Correction of measured resonance intensity profiles using a monochromator-photomultiplier response function (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 297-298 
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    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The ultraviolet transmission response function of a double monochromator Raman spectrometer has been obtained in the 28 000-40 000 cm-1 range, using a very simple method, assuming that the two halves of the double monochromator are rigorously identical in the transmission of light. The measured transmission response function of a commercially available double monochromator has been found to vary sharply in the region of 33 000 cm-1. Such a substantial variation in transmission must be taken into account when Raman intensities are measured as a function of the excitation wavelength, even when an internal standard is used, as the absolute frequency of the Raman standard is different from the absolute frequencies of the Raman lines of the sample. This is particularly the case when overtone and combination band intensities are measured relative to a fundamental of the internal standard, since the overtone frequencies are often displaced by more than 1000 wavenumbers from the fundamentals. Failure to make such corrections can lead to substantial errors in a measured resonant Raman excitation profile.
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/jrs.1250140502
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    Influence of Faraday rotation on the selection rule of phonon Raman scattering in magnetic materials (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 326-329 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: We report the first examination of the influence of Faraday rotation on the selection rule of phonon Raman scattering in magnetic materials. It is shown that the original selection rule for phonons will no longer be valid owing to the introduction of Faraday rotation. By applying a transverse ( is the direction of light propagation) or a longitudinal () magnetic field, the effect of Faraday rotation can be switched off or on. The changes of the intensity and mode structure of phonon scattering in the two configurations are related directly to the absorption and the magneto-optical figure of merit, Q ( = θF/2α, where θF is the specific Faraday rotation and α is the coefficient of absorption). The result also shows that introducing Faraday rotation offers a new chance of identifying some vibration modes which are otherwise impossible. Taking garnet (Oh10) as example, the relationship between phonon scattering intensities and Faraday rotation and absorption was calculated for typical scattering configurations. The results can be checked experimentally using magnetic materials with suitable Q values.
    Additional Material: 2 Tab.
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    URL: http://dx.doi.org/10.1002/jrs.1250140506
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    Fermi resonance in Raman and infrared spectra of Ni(CH3COO)2·4H2O and its deuterated analogue (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 1-5 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The doublet at 962-906 cm-1 observed in the room temperature spectra of Ni(CH3COO)2. 4H2O is attributed to the ν4 state of the acetate group undergoing strong Fermi-type anharmonic interaction with a two-phonon hybrid state associated with a water libration exhibiting characteristic hypsochromic shift and hyperchromic effect with decreasing temperature. In the deuterated analogue another doublet at 706-666 cm-1 is associated with the v5 state of the acetate group and another two-phonon hybrid state, also associated with a D2O libration, exhibiting hypsochromic shift but the hypochromic effect. The Fermi interaction enhances in the hydrate and diminishes in the deuterate as the temperature is lowered.
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/jrs.1250140102
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    Molecular light scattering and optical activity. Cambridge University Press 1983, xv + 408pp., £37.50 (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 219-219 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250140318
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    Non-linear Raman Spectroscopy and its chemical applications - proceedings of the NATO Advanced Study Institute, Bad Windsgelm, Germany, 23 August-3 September 1982. D. Reidel Publishing Company 1982, 643, 170 Dutch Guilder/US $74 (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 219-220 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250140320
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    Normal-coordinate analysis of retinal isomers and assignments of Raman and infrared bands (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 236-245 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Normal-coordinate calculations have been performed for the all-trans, 9-cis, 11-cis and 13-cis isomers of retinal using a model structure in which the β-ionone ring was replaced with a simplified structure. Most of the Raman and infrared bands observed from these isomers in the solid state are assigned on the basis of the results of calculation. The vibrational characteristics of each isomer are discussed.
    Additional Material: 7 Ill.
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    URL: http://dx.doi.org/10.1002/jrs.1250140405
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    Raman spectral studies of bleomycin A2 and related structural fragments: A probe for bleomycin-DNA interactions (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 266-270 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Raman spectra have been obtained for bleomycin A2 and selected fragments. Virtually all of the features in the bleomycin Raman spectrum can be attributed to the preresonance enhanced vibrational transitions of the 2,4′-bithiazole moiety as determined by comparison to the Raman spectra of bithiazole fragments. The Raman spectrum of bleomycin is dominated by a very intense band at 1542 cm-1 that can be approximately assigned as a bithiazole ring stretching mode. This feature may serve as a probe of bithiazole environment in bleomysin -DNA interactions.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250140411
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    Masthead (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983) 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250140501
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    Normal-coordinate analysis of β-carotene isomers and assignments of the Raman and infrared bands (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 310-321 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Normal-coordinate calculations were performed for the all-trans, 7-cis, 9-cis, 13-cis, 15-cis, 9, 13-di-cis, 9,13′-di-cis, 9,15-di-cis and 13,15-di-cis isomers of β-carotene. The Raman and infrared bands of the all-trans and 15-cis isomers in the solid state were assigned on the basis of the results of the normal-coordinate calculations. The Raman excitation profiles of the main Raman bands of the above two isomers in cyclohexane solution reported previously were satisfactorily correlated with the calculated vibrational modes and the molecular structures in the excited electronic states. The Raman bands of the 7-cis, 9-cis, 13-cis, 9,13-di-cis, 9,13′-di-cis, 9,15-di-cis and 13,15-di-cis isomers were assigned. The vibrational modes assigned to the Raman bands characteristic of the cis isomers were analysed in detail.
    Additional Material: 6 Ill.
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    URL: http://dx.doi.org/10.1002/jrs.1250140504
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    Raman scattering from phonons in MnCO3 (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 330-332 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Measurements of Raman scattering from the vibronic origin in MnCO3 (rhodochrosite) are reported. The observed five Raman lines (184, 289, 719, 1086 and 1415 cm-1) are identified with and classified into the relevant phonon modes. Those lines show the theoretically expected polarization characteristics.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250140507
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    Spectroscopic and electrochemical studies of transition metal tetrasulfonated phthalocyanines: 2For Part 1 see Ref. 5. - resonant raman spectra of aqueous solutions of cobalt and iron tetrasulfonated phthalocyanines (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 338-341 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Raman spectra of the polarized and depolarized light scattered from cobalt and iron tetrasulfonated phthalocyanines in aqueous media at various pH values are discussed and correlated with previously obtained data. The Raman vibrational modes from pyrrole and benzene were used for a tentative band assignment in the frequency range from 200 to 1700 cm-1.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250140509
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    The Raman and infrared spectra and normal coordinate analysis for 1,2-diiodotetrafluorobenzene (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 353-357 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The Raman spectrum of 1,2-diiodotetrafluorobenzene was recorded in the region 50-2000 cm-1 on a Jarrell-Ash Model 25-300 double monochromator spectrometer using 5145 Å radiation from an argon-ion laser. The depolarization ratios of the Raman lines were measured in CS2 and CHCl3 solutions. The infrared spectrum was recorded in CS2 and CHCl3 solutions in the region 180-200 cm-1 on a Perkin-Elmer 180 spectrometer using a CsI cell. The fundamental vibrations were assigned on the basis of the frequencies and relative intensities of the bands observed in the Raman and infrared spectra and the depolarization ratios of the Raman lines. A normal coordinate analysis was also performed to check the vibrational assignments.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250140512
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    Structure in nitrate glasses: Multiple anion sites or random continuum? (1983)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 14 (1983), S. 11-15 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The Raman spectra have been studied of tertiary glasses formed by the progressive replacement of Ca(II) by Mg(II) in an equimolar Ca(NO3)2:KNO3 mixture. The Raman bands of the three internal modes of the nitrate ion show progressive growth of a new set of components as the Mg(II) concentration increases. The changes are interpreted in the light of previous experimental and theoretical studies. A case is made for the existence of discrete anion sites in which the field perturbing the anion is dominated by one species of cation. Even in the case of the (Ca/K)NO3 glass, there is evidence for discrete sites rather than a continuum of anion environments.
    Additional Material: 3 Ill.
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    URL: http://dx.doi.org/10.1002/jrs.1250140105
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