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.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry