Non-exponential vibrational dephasing of liquids in the subpicosecond time domain
β Scribed by H.R. Telle; A. Laubereau
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 368 KB
- Volume
- 94
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Using a novel version of the Raman probins technique the short-time hehaviour of coherently escited vibrational modes is investigated. Subpicosecond values of the time scale ~c of the dephasing interaction are reported which characterize the transhtional motion in several liquid%
π SIMILAR VOLUMES
A quick method of determining the parameters of a stretched exponential fit to an experimental time correlation function of vibrational dephasing is proposed and tested.
We consider a simple closure for the contmued-Iracnon expansion of the \lbra:lonal correlation function IX contams no adJustable parameters. yet shows remarkable agreement w~tb expenmental data lor some molecules m the hquld phase
The nbratlonal dephasmg of the methyl CH2 symmclnc stretch made III glycerol was duectly measured over an extendcd tcmpersture range usmg plmsecond cohercnr Raman pump and probe spectroscopy. The dephlsing time was found to mcrcasc dramatically a~ the tcmpcralure oi the supercooled hqmd ws lowered.