Spectroscopic studies of diatomic noble gas halides. IV. Vibrational and rotational constants for the X, B, and D states of XeF

Journal Article · Thu Jun 01 00:00:00 EDT 1978 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.435583· OSTI ID:6803583

Tellinghuisen, P C; Tellinghuisen, J; Coxon, J A; Velazco, J E; Setser, D W

The B..-->..X and D..-->..X systems of XeF are recorded by photographing the emission from the low-pressure Xe*/XeF/sub 2/ and Ar*/XeF/sub 2/ reactions. A rotational analysis is obtained for the 1--2 band of B--X, for which isotopic blending is negligible. Vibrational parameters for the X, B, and D states are derived from a direct, weighted least-squares fit of all assignments for both transitions. Rotational parameters are deduced from the vibrational dependence of the band shapes and intensities. Some significant results of this analysis are R/sub e/X=2.293 A, R/sub e/B=2.631 A, R/sub e/D=2.51 A, ..omega../sub e/X=225 cm/sup -/1, ..omega../sub e/B=309.0 cm/sup -/1, ..omega../sub e/D=350.1 cm/sup -/1, and D/sub e/X=1175 cm/sup -/1. The Franck--Condon factors for many of the bands in both systems show a strong rotational dependence, which is to be expected in transitions of this type, for reasons discussed herein.

• Research Organization: Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235
• OSTI ID: 6803583
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 68:11; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
EMISSION SPECTRA
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FLUORIDES
FLUORINE COMPOUNDS
GAS LASERS
HALIDES
HALOGEN COMPOUNDS
LASERS
RARE GAS COMPOUNDS
ROTATIONAL STATES
SPECTRA
ULTRAVIOLET SPECTRA
VIBRATIONAL STATES
XENON COMPOUNDS
XENON FLUORIDES