✦ LIBER ✦

Laser induced time-dependent thermal lensing studies of vibrational relaxation: translational cooling in CH3F

✍ Scribed by Frederick R. Grabiner; Donald R. Siebert; George W. Flynn

Publisher: Elsevier Science
Year: 1972
Tongue: English
Weight: 579 KB
Volume: 17
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(72)87051-9

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✦ Synopsis

Time-resolved measunments of the thermal lens effect have been made for CH3F, CH3CI and C2H4. This tech:. nique is compared to others used in the study of vibrational relaxation phenocena and is found to be applicable to the study of a wi& variety of gaseous systems at relatively low pressures. Translational cooling has been observed in CH3F and an approximate lower limit of 200 msec-1 hz$ been established for the rate of this cooling process, which corresponds to equilibration of the u3 and v6 states, in a mixture of 0.2 torr CH3F and 10 torr Ar.

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