Vibrational energy redistribution in liquid benzene

Lawrence K. Iwaki, John C. Deàk, Stuart T. Rhea, Dana D. Dlott

Research output: Contribution to journalArticlepeer-review

Abstract

Ultrafast anti-Stokes Raman spectroscopy after mid-IR excitation of a C-H stretching transition is used to study vibrational energy relaxation (VER) and vibrational cooling (VC) of liquid benzene. By adding CCl4 to benzene and monitoring the CCl4 Raman transitions, the time-dependence of energy build-up in the bath was measured, which showed that VC in benzene occurs about 10 times slower than the 8 ps decay of the C-H stretch. A surprising result is that most VER lifetimes are practically the same as in a low-temperature crystal. This result is explained by the VC model of Hill and Dlott (J. Chem. Phys. 89 (1988) 830).

Original languageEnglish (US)
Pages (from-to)176-182
Number of pages7
JournalChemical Physics Letters
Volume303
Issue number1-2
DOIs
StatePublished - Apr 2 1999

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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