Effects of energy exchange on vibrational dephasing times in Raman scattering

CB Harris, RM Shelby, PA Cornelius - Physical Review Letters, 1977 - APS
CB Harris, RM Shelby, PA Cornelius
Physical Review Letters, 1977APS
It is shown that the Raman line-shape function and/or vibrational dephasing times can reflect
random frequency modulation of high-frequency vibrational modes via exchange with low-
frequency modes. When exchange is incorporated into the vibrational correlation function,
lifetimes and scattering rates between modes can be quantitatively determined from the
temperature dependence of the spontaneous Raman spectrum. Finally, some experimental
results on vibrational redistribution are presented which demonstrate the salient features of …
Abstract
It is shown that the Raman line-shape function and/or vibrational dephasing times can reflect random frequency modulation of high-frequency vibrational modes via exchange with low-frequency modes. When exchange is incorporated into the vibrational correlation function, lifetimes and scattering rates between modes can be quantitatively determined from the temperature dependence of the spontaneous Raman spectrum. Finally, some experimental results on vibrational redistribution are presented which demonstrate the salient features of the theory.
American Physical Society
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