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Direct and indirect dephasing of vibrational modes in a liquid

โœ Scribed by S.F. Fischer; A. Laubereau

Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
707 KB
Volume
55
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

A model for (indirect) dephasing of a high-frequency vibrational mode caused by intramolecular anharmonic coupling to a low-frequency vibration is proposed which is an extension of the exchange model of Anderson and Kubo. It contains apart of the frequency shift of the combination band and the lifetime TT of the low-frequency mode, the dephasing of the high, the low, and the combination band. T: is determined by resonance energy transfer and population decay processes. Theoretical estimates are compared with eaperimental data on a CH3 stretching mode ofCH3CCl3.

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