Accession Number:

ADA061686

Title:

Temperature Dependence of HE(v sub 1 = 1) + HF(v sub 2 = 0) Vibrational Relaxation.

Descriptive Note:

Interim rept.,

Corporate Author:

AEROSPACE CORP EL SEGUNDO CALIF IVAN A GETTING LABS

Personal Author(s):

Report Date:

1978-08-15

Pagination or Media Count:

39.0

Abstract:

A kinetics model of infrared laser-induced fluorescence experiments has been used to simulate the experimental quenching rate coefficients reported between 300 and 4000 K for the vibrational relaxation of HFv 1 1 by HF. This rotational nonequilibrium model is based on the predicted energy-transfer mechanisms in hydrogen fluoride systems reported in a trajectory study by Wilkins. This model includes v yields R, R yields v, R yields R, T, and R, T yields R energy-transfer processes. A key process is nonresonant vibrational-to-rotational intramolecular energy transfer in which HFv 1 1, J 1 terminates on high J 1 states of v 1 0. No mechanisms involving dimerization appear to be necessary in understanding the inverse temperature dependence of the reported quenching rate coefficients.

Subject Categories:

  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE