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  • Articles  (19)
  • thermal conductivity  (11)
  • 33  (8)
  • Springer  (19)
  • American Chemical Society (ACS)
  • American Geophysical Union
  • National Academy of Sciences
  • Nature Publishing Group
  • 2015-2019
  • 2005-2009
  • 1980-1984  (19)
  • 2017
  • 2008
  • 1984  (19)
  • Physics  (19)
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  • Articles  (19)
Source
Keywords
Publisher
  • Springer  (19)
  • American Chemical Society (ACS)
  • American Geophysical Union
  • National Academy of Sciences
  • Nature Publishing Group
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  • 2015-2019
  • 2005-2009
  • 1980-1984  (19)
Year
Topic
  • Physics  (19)
  • 1
    Electronic Resource
    Electronic Resource
    Laser photoion projector (1984)
    Springer
    Applied physics 33 (1984), S. 57-61 
    Details
    ISSN: 1432-0649
    Keywords: 33 ; 42.60 ; 82.50
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A laser photodesorption microscope has been applied to obtain 4×103-fold images of rhodamine crystals on a tip with a diameter of 66μm. Peculiarities of the formation of these images have been studied with different values of electric field strength on the tip and laser pulse intensities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00690026
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  • 2
    Electronic Resource
    Electronic Resource
    Chemical reactions following the IRMPD of C2F3Cl (1984)
    Springer
    Applied physics 34 (1984), S. 97-106 
    Details
    ISSN: 1432-0649
    Keywords: 82.50 ; 33
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract C2F3Cl is photolyzed with a TEA-CO2 laser at 1050.44 cm−1 with focussed fluences up to 280 J/cm2. The stable products in the IRMPD of C2F3Cl are determined for up to 10 Torr of C2F3Cl being photolyzed both neat and with added O2. C2F4 and trans-C2F2Cl2 are found to occur in the greatest yield though C3F5Cl, C3F4Cl2, C4F7Cl, and C2F3Cl3 also appear to be primary products. When O2 is present F2CO, FClCO, and CF2ClCOF are the exclusive products. The formation of these products are for the most part consistent with a carbene formation dissociation mechanism for C2F3Cl IRMPD. C2F3Cl3 may best be explained by another mechanism competitive with carbene formation. Many products attributed to secondary photolysis mechanisms are observed for long photolysis times.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697955
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  • 3
    Electronic Resource
    Electronic Resource
    A differential detection scheme for Faraday rotation spectroscopy with a color center laser (1984)
    Springer
    Applied physics 34 (1984), S. 179-185 
    Details
    ISSN: 1432-0649
    Keywords: 07 ; 33 ; 35
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A differential detection scheme to reduce source noise and to improve sensitivity based upon the Faraday effect has been developed. This method is particularly useful in connection with low-power, high-noise laser sources and multipass arrangements where a degradation of polarization quality is substantial. The theoretical background of the differential method is developed. It is tested with magnetic rotation signals from transitions of stable species with low modulation sensitivity and signals from free radicals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697632
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  • 4
    Electronic Resource
    Electronic Resource
    Second-stage enrichment in the laser separation of carbon isotopes (1984)
    Springer
    Applied physics 35 (1984), S. 173-177 
    Details
    ISSN: 1432-0649
    Keywords: 82.50 ; 33
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract There is a general agreement that efficient infrafed laser induced separation of carbon isotopes requires a two-stage process. An efficient first stage 1%→50%13C enrichment was shown by Gauthier et al. [1] to be feasible and competitive with conventional technology. In this work, second-stage CO2 laser enrichment of equimolar mixtures of12CHClF2 and13CHClF2 has been demonstrated yielding tetrafluoroethylene containing 95% or 99%13C. Forward enrichment by selective decomposition of the13CHClF2 fraction was very efficient, absorbing only 6 and 16 eV, respectively, per carbon atom produced at 95% and 99%13C content.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697709
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  • 5
    Electronic Resource
    Electronic Resource
    Multiphoton absorption of broad-band CO2 laser radiation by SF6 (1984)
    Springer
    Applied physics 35 (1984), S. 1-5 
    Details
    ISSN: 1432-0649
    Keywords: 82.50 ; 33 ; 35
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Increase of the emission bandwidth of a high-pressure CO2 laser up to 1.5 cm−1 increases the multiphoton absorption cross-section of SF6. Comparison with the previously found [9] increased absorption for shorter pulses suggests that this is also a bandwidth effect. Spectral structures as narrow as 1 cm−1 above the 10th absorption step are invoked to explain the observations. The temperature effect, which disappears in the broad-band case, confirms this view.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697513
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  • 6
    Electronic Resource
    Electronic Resource
    Applications of two-photon absorption for detection of CO in combustion gases (1984)
    Springer
    Applied physics 33 (1984), S. 205-208 
    Details
    ISSN: 1432-0649
    Keywords: 33 ; 82,40
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Laser-induced fluorescence has been used for detection of CO in different environments. The fluorescence light was obtained by using a two-photon transition between theX 1∑− and theB 1∑− electronical states around 230 nm. Cell measurements indicate a detection limit lower than 0.1 ppm. Measurements in a CH4/air flame and in a low pressure dc discharge were realized with a diode-array detector, which was used in an imaging mode, permitting single-shot CO distributions to be captured.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697329
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  • 7
    Electronic Resource
    Electronic Resource
    CVL-pumped dye laser for spectroscopic application (1984)
    Springer
    Applied physics 35 (1984), S. 31-36 
    Details
    ISSN: 1432-0649
    Keywords: 42.60 ; 33 ; 36
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A spectroscopic dye laser system-pumped by a Copper Vapor Laser (CVL)-has been built and optimized for different dye solutions operating in the spectral range from 530 to 890 nm. Conversion efficiencies up to 40% were reached in broad band operation, 24% with a prism expander grating cavity, and 20% in grazing incidence configuration, which operated at typical band widths of 3 GHz. Second harmonic generation (SHG) of the dye laser output produced tunable uv-radiation between 260 and 408 nm at conversion efficiencies ≦5%. Fundamental and SHG output were used for resonant ionization experiments in molecular beams.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697518
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  • 8
    Electronic Resource
    Electronic Resource
    Laser irradiation of a three-level gas system: Continued-fraction theory and applications (1984)
    Springer
    Applied physics 34 (1984), S. 73-82 
    Details
    ISSN: 1432-0649
    Keywords: 42.65 ; 32 ; 33
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The general steady-state solution of the density matrix equations for a Doppler broadened three-level system irradiated by two resonant standing-wave laser beams of arbritrary intensity is analyzed. The solution is expressed in a matrix continued fraction form, that involves 4×4 matrices in important configurations and is convenient for numerical computations. Some representative cases including the absorption spectra for a probe laser of arbitrary intensity, the Doppler-free multiphoton resonances and the optically pumped lasers are analyzed numerically in connection with previous experimental investigations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697951
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  • 9
    Electronic Resource
    Electronic Resource
    Measurement of thermal conductivity of liquid fluorocarbons (1984)
    Springer
    International journal of thermophysics 5 (1984), S. 209-218 
    Details
    ISSN: 1572-9567
    Keywords: fluorocarbons ; liquid ; modified Li-Poole equations ; thermal conductivity ; toluene ; transient hot wire method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The thermal conductivity of ten liquid fluorocarbons, R 11, R 12, R 13, R 13B1, R 22, R 113, R 114, R 115, R 114B2, and R 124, was measured in the temperature range from 204–450 K by using the transient hot wire method. Prior to the measurement of the fluorocarbons, the thermal conductivity of toluene as the reference material was measured. The results for toluene agree with the recommended values by Nagasaka and Nagashima within ±1%. The accuracy of the present results for fluorocarbons is estimated to be better than ±1.5%. The results are compared with the equation by Li and Poole. The equation proves to be unsuitable for some fluorocarbons, and modified Li-Poole equations including the number of fluorine atoms are proposed for the three groups of fluorocarbons based on the smoothed values of this work and are compared with the experimental data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00505501
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  • 10
    Electronic Resource
    Electronic Resource
    Thermal conductivity of ceramic fibrous insulators at high temperatures (1984)
    Springer
    International journal of thermophysics 5 (1984), S. 229-238 
    Details
    ISSN: 1572-9567
    Keywords: aluminosilicate fibrous insulator ; ceramic fiber ; hot wire method ; thermal conductivity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The temperature and bulk density dependence of the thermal conductivity of commercial aluminosilicate fibrous insulators were studied by using the transient hot wire method. The thermal conductivity of ceramic fibrous insulators in both air and helium gas atmosphere increased with increasing bulk density. At high temperatures, however, the insulators with lower bulk density showed a higher thermal conductivity because of heat radiation. The following experimental relation between thermal conductivity λ and temperature θ was obtained for aluminosilicate fibruous insulators: λ=a exp(bθ). Relationships are given between the constants a and b and the bulk density. From the relation, the optimum bulk density of ceramic fibrous insulators can be calculated for each working temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00505503
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