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  • 33.70.Jg  (1)
  • 33.70Jg  (1)
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Keywords
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  • 1
    Electronic Resource
    Electronic Resource
    Photoacoustic measurements of Lorentz broadening in CO2 between 25° C and 450° C (1991)
    Springer
    Applied physics 53 (1991), S. 170-179 
    Details
    ISSN: 1432-0649
    Keywords: 33.70Jg ; 34.50Ez ; 7.65G
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A variable temperature photoacoustic cell has been constructed and tested by studying the interplay of CO2, H2O, and NH3 in synthetic smoke. Saturation effects for CO2 and NH3 have been modeled and compared with experiments, and results are obtained for the vibrational relaxation rate associated with NH3-H2O collisions. The cell has been used for studying the temperature dependence of self-broadening and N2 broadening of CO2 lines. The temperature dependence of the scattering rate is well described by a T −n law with n=0.77 in both cases. This result agrees with previous results obtained by tunable diode laser spectroscopy, but disagrees with results obtained by indirect methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00330233
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Second-harmonic and sum-frequency generation in AgGaSe2 with tunable waveguide CO2 lasers (1995)
    Springer
    Applied physics 61 (1995), S. 291-299 
    Details
    ISSN: 1432-0649
    Keywords: 33.20.Ea ; 33.70.Jg ; 42.65.Ky
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A tunable source is described, giving extensive coverage of a spectral region around 2000 cm−1. A frequency self-calibration routine allows for the recording of Doppler-limited absorption profiles with an absolute accuracy of better than 10 MHz. The applicability of the source is demonstrated through measurements on the12C16O,12C17O, and12C18O isotopomers. Collision-broadening parameters and line strengths are determined, some of the data showing evidence of motional narrowing. Sensitivity limits are determined for linear absorption measurements as well as for photoacoustic absorption, and the feasibility of monitoring all three isotopomers with ppm sensitivity is demonstrated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01082049
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    Paper (German National Licenses)
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