Vibrational relaxation and spectral evolution following ultrafast OH stretch excitation of water

Andrei Pakoulev, Zhaohui Wang, Dana D. Dlott

Research output: Contribution to journalArticlepeer-review

Abstract

Ultrafast anti-Stokes Raman measurements of OH stretching excitations (3000-3600 cm-1) in water show an ∼ 0.4 ps spectral evolution from the red to the blue that is similar to what is seen in the Raman spectrum of water heated to 90 °C. The lifetime of OH stretching excitations T1 = 0.7 ps. A small portion of the spectrum on the blue edge of the band decays more slowly with T1 = 1.1 ps. A previous measurement of T1 ≈ 0.3 ps for water [J. Chem. Phys. 117 (2002) 1708] is reinterpreted shown to consistent with the present work.

Original languageEnglish (US)
Pages (from-to)594-600
Number of pages7
JournalChemical Physics Letters
Volume371
Issue number5-6
DOIs
StatePublished - Apr 14 2003

ASJC Scopus subject areas

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

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