A model based on :iemiclassical collision theory is presented to describe the dephasing of vibrationally excited molecules in a Iiquid. It is sholvn that fluctuations of the vibrational frequencies, which are uuzed by the intermolecular interaction, lead to phase rc:laxation of 3 coherently excited
Convergence of memory functions for the vibrational dephasing process in liquids
โ Scribed by Z. Gburski
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 383 KB
- Volume
- 115
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
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
๐ SIMILAR VOLUMES
We consider the ~ssibility of applying a simple closure for the continued-faction expansion proposed recently by Gburski for analysing molecular reorientation studied by microwave and far-infrared absorption. We use experimentat far-infrared absorption data for liquid methyl iodide.
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%