A partial vibrational energy transfer map for cyclopropane

Gordon T. Fujimoto*, Eric Weitz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Laser induced infrared fluorescence studies have been performed on cyclopropane. Molecules were excited from the ground state to the v10 level of cyclopropane using a Q-switched CO2 laser. Fluorescence was observed from the v6, v8, v9, v11, v10+v11, and v5+v10 levels of cyclopropane. When analyzed as single exponentials, the rise-time rates of fluorescence from the v9 and v11 levels are 312±30 and 302±32 msec-1 Torr-1 respectively. The effect of rare gas collisions on the fluorescene rise-time of the v9 and v11 levels was also measured. A model is proposed to account for equulibrium processes among the v9, v10, v11 levels. Fluorescence measurements from the v6, v8, v 10+v11, and the v5+v10 levels exhibit a multiple exponential decay. The implications of this with respect to the V-V equilibration of the vibrational manifold are discussed. SSH "breathing sphere" calculations were performed for V-T/R and various V-V processes.

Original languageEnglish (US)
Pages (from-to)5300-5309
Number of pages10
JournalThe Journal of Chemical Physics
Issue number12
StatePublished - Jan 1 1979

ASJC Scopus subject areas

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

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