Vibrational energy relaxation pathways of water

Andrei Pakoulev, Zhaohui Wang, Yoonsoo Pang, Dana D. Dlott

Research output: Contribution to journalArticlepeer-review


Vibrational energy relaxation (VR) of the OH stretch νOH and bend δH2O in water is studied by the mid-IR pump with anti-Stokes Raman probe technique. The broad νOH band in water consists of two inhomogeneously broadened subbands. VR in the larger red-shifted subband νOHR, with T1=0.55 ps, is shown to occur by the mechanism νOH→δH2O (1/3) and νOH→ground state (2/3). VR in the smaller longer-lived blue-shifted subband νOHB, with T 1=0.75 ps, occurs by the mechanism νOH→ground state. The bending fundamental δH2O decays directly to the ground state with T1=1.4 ps.

Original languageEnglish (US)
Pages (from-to)404-410
Number of pages7
JournalChemical Physics Letters
Issue number3-4
StatePublished - Oct 21 2003

ASJC Scopus subject areas

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


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