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Measurement of the vibrational energy-transfer rates in mixtures of polyatomic molecules

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Abstract

The pressure coefficient of the vibrational deexcitation of methanol molecules caused by collisions with NH3, CO2, SF6 molecules and He atoms is measured by infrared-far-infrared double-resonance spectroscopy. Large coefficients are measured for those buffer gases which increase the output power of far-infrared lasers. For other buffer gases such as NH3 and CO2 the measured coefficients are zero within the limits of experimental error. The relevance to measurements on the photoacoustic trace-gas analysis is discussed.

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Authors and Affiliations

  1. Department of Plasma Physics, KFKI-Research Institute of Particle and Nuclear Physics, P.O. Box 49, H-1525, Budapest, Hungary

    J. S. Bakos, P. N. Ignácz, Zs. Sörlei & J. Szigeti

  2. Department of Photophysics, Institute of Isotopes, P.O. Box 77, H-1525, Budapest, Hungary

    A. Lörincz

Authors
  1. J. S. Bakos
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  2. P. N. Ignácz
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  3. A. Lörincz
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  4. Zs. Sörlei
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  5. J. Szigeti
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Bakos, J.S., Ignácz, P.N., Lörincz, A. et al. Measurement of the vibrational energy-transfer rates in mixtures of polyatomic molecules. Appl. Phys. B 57, 89–93 (1993). https://doi.org/10.1007/BF00425989

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  • DOI: https://doi.org/10.1007/BF00425989

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