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  • Artikel  (8)
  • 33  (8)
  • Springer  (8)
  • American Chemical Society (ACS)
  • American Geophysical Union
  • National Academy of Sciences
  • Nature Publishing Group
  • 2015-2019
  • 2005-2009
  • 1980-1984  (8)
  • 2017
  • 2008
  • 1984  (8)
  • Physik  (8)
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  • Artikel  (8)
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  • Springer  (8)
  • American Chemical Society (ACS)
  • American Geophysical Union
  • National Academy of Sciences
  • Nature Publishing Group
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  • 2015-2019
  • 2005-2009
  • 1980-1984  (8)
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  • Physik  (8)
  • 1
    Digitale Medien
    Digitale Medien
    Laser photoion projector (1984)
    Springer
    Applied physics 33 (1984), S. 57-61 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 33 ; 42.60 ; 82.50
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00690026
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  • 2
    Digitale Medien
    Digitale Medien
    Chemical reactions following the IRMPD of C2F3Cl (1984)
    Springer
    Applied physics 34 (1984), S. 97-106 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 82.50 ; 33
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00697955
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  • 3
    Digitale Medien
    Digitale Medien
    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
    Schlagwort(e): 07 ; 33 ; 35
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00697632
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  • 4
    Digitale Medien
    Digitale Medien
    Second-stage enrichment in the laser separation of carbon isotopes (1984)
    Springer
    Applied physics 35 (1984), S. 173-177 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 82.50 ; 33
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00697709
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  • 5
    Digitale Medien
    Digitale Medien
    Multiphoton absorption of broad-band CO2 laser radiation by SF6 (1984)
    Springer
    Applied physics 35 (1984), S. 1-5 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 82.50 ; 33 ; 35
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00697513
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  • 6
    Digitale Medien
    Digitale Medien
    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
    Schlagwort(e): 33 ; 82,40
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00697329
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  • 7
    Digitale Medien
    Digitale Medien
    CVL-pumped dye laser for spectroscopic application (1984)
    Springer
    Applied physics 35 (1984), S. 31-36 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 42.60 ; 33 ; 36
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00697518
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  • 8
    Digitale Medien
    Digitale Medien
    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
    Schlagwort(e): 42.65 ; 32 ; 33
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00697951
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