Relaxation of vibrationally excited HCl in solid Xe

Herman Krueger*, J. Thomas Knudtson, Yannis P. Vlahoyannis, Eric Weitz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Rates for vibrational relaxation of HCl(ν = 1.2) in solid xenon at 40 and 146 K are reported and are compared to the rate of relaxation of HCl(ν = 1) in liquid xenon near the freezing point. Upon freezing, the rate of relaxation of HCl(ν = 1) is found to decrease significantly and emission from HCl(ν = 2), absent in the liquid phase, is detected. Both of these effects are attributed to a significant decrease in mobility of HCl molecules in the solid phase as compared to the liquid phase. At both 40 and 146 K, the ratio of relaxation rates for HCl(ν = 2) to HCl(ν = 1) is found to deviate significantly from the harmonic oscillator prediction of 2:1. The rate of relaxation for HCl(ν = 1) by xenon is found to be similar in both liquid solution at 200 K and in the solid at 146 K.

Original languageEnglish (US)
Pages (from-to)298-304
Number of pages7
JournalChemical Physics Letters
Issue number4
StatePublished - Sep 6 1985

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces

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