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Proceedings Paper

Pulse photoacoustic technique to study of vibrational relaxation in gases
Author(s): Venedict A. Kapitanov; Boris A. Tikhomirov
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Paper Abstract

Characteristic properties of forming of the photoacoustic detector signal at excitation of absorbing gas molecules by a short laser pulse ((tau) << (tau) vt) allowing for the natural oscillations of microphone membrane are considered. The technique for (tau) vt measurement is proposed on the strength that the signal form is determined by the oscillation mentioned above under low pressure (P <EQ 10 torr). the results of measurement of (tau) vt of the vibrational state (nu) 1 + 3 (nu) 3 in H2O for the collisions H2O- H2O and H2O-air are presented.

Paper Details

Date Published: 26 January 1994
PDF: 6 pages
Proc. SPIE 2205, 11th Symposium and School on High-Resolution Molecular Spectroscopy, (26 January 1994); doi: 10.1117/12.166270
Show Author Affiliations
Venedict A. Kapitanov, Institute of Atmospheric Optics (Russia)
Boris A. Tikhomirov, Institute of Atmospheric Optics (Russia)


Published in SPIE Proceedings Vol. 2205:
11th Symposium and School on High-Resolution Molecular Spectroscopy
Alexander I. Nadezhdinskii; Yu V. Ponomarev; Leonid N. Sinitsa, Editor(s)

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