Accession Number : AD0765183

Title :   Temperature Dependence of V-V and V-R, T Energy Transfer Measurements in Mixtures Containing HF.

Descriptive Note : Rept for Nov 71-Sep 72,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Bott,Jerry F. ; Cohen,Norman

Report Date : 31 AUG 1973

Pagination or Media Count : 58

Abstract : A pulsed HF chemical laser has been used to excite HF molecules to their first vibrational level. The decay times of the infrared fluorescence from HF(v=1) have been used to determine the rate coefficients for energy transfer from HF to various collision partners including H2, D2, N2, O2, DF, HCl, CO2, NO, CO, and HBr. The experiments were performed at temperatures from 450 to 1000K for most of the molecules, as well as at 295K. The room-temperature probabilities of energy transfer from HF to the various molecules plotted versus energy mismatch fell along two distinct lines: one for homonuclear and one for heteronuclear molecules. The room-temperature relaxation rates of HF in the presence of the various molecules were measured. (Modified author abstract)

Descriptors :   (*FLUORESCENCE, *FLUORIDES), HYDROGEN COMPOUNDS, MOLECULAR ENERGY LEVELS, MIXTURES, INTERACTIONS, TEMPERATURE, REACTION KINETICS, DIATOMIC MOLECULES

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE