VIBRATIONAL EXCHANGE IN THE MANIFOLD OF HIGH-FREQUENCY VIBRATIONS OF THE CH2F2 MOLECULE

被引：5
|
作者：
IONOV, PI
KOSTEREV, AA
MALINOVSKY, AL
RYABOV, EA
机构：
[1] Institute of Spectroscopy, Russian Academy of Sciences, 142092 Troitzk, Moscow Region
来源：
CHEMICAL PHYSICS | 1993年 / 178卷 / 1-3期
关键词：
D O I：
10.1016/0301-0104(93)85075-J
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Time-resolution Raman scattering spectroscopy has been used to study the collisional vibrational relaxation of high-frequency 2 nu(8), nu(1) and nu(6) modes in the CH2F2 molecule after their excitation by optical parametric oscillator pulses. The rate constants of energy exchange between these modes and their relaxation to other modes have been determined. The exchange between the stretching C-H vibrations nu(1) and nu(6) have been found to be the fastest. The rate constant of this process has an extremely high value k(32)(nu(6)-->nu(1)) = 1.51 X 10(7) s(-1) Torr(-1) which is higher than the rate of gas-kinetic collisions.
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页码：363 / 370
页数：8
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