DETERMINING REPULSIVE POTENTIALS FOR THE $X_{1}(^{2}\Pi_{1/2}),X_{2}(^{2}\Pi_{3/2})$ and A$(^{2}\Sigma^{+})$ STATES OF InAr FROM CONTINUUM SPECTRA
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Date
1992
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
New measurements of bound $\rightarrow$ continuum emission from particular vibrational levels of the $B(^{2}\Sigma^{+})$ state of InAr into dissociative continua associated with the $X_{1}(^{2}\Pi_{1/2}),X_{2}(^{2}\Pi_{3/2})$ and A$(^{2}\Sigma^{+})$ states have yielded a wealth of $structure.^{1}$ The present paper shows how such data may be analysed to determine both the repulsive short-range portions of the final-state potential energy curves and the associated transition moment functions. The methods used include an``RKR-like inversion procedure"", applicable to oscillatory continua whose intensity extrema may be associated with particular extrema of the initial-state vibrational wave $function,^{2}$ and trial-and-error or least-squares fits of simulated spectra to $experiment,^{3,4}$ an approach required for overlapping spectra whose intensity extrema may not be precisely located and/or uniquely assigned. The resulting potentials for the $X_{1}(^{2}\Pi_{1/2}),X_{2}(^{2}\Pi_{3/2})$ and A$(^{2}\Sigma^{+})$ states of InAr will be presented and discussed.
Description
$^{1}$W. Fawzy, R. J. Le Roy, B Simard, H. Niki and P. A. Hackett, J. Chem. Phys. (submitted 1992). $^{2}$M. S. Child, H. Ess\'{e}n and R. J. Le Roy, J. Chem. Phys. 78,6732(1983). $^{3}$R. J. Le Roy, R. G. Macdonald and G. Burns, J. Chem. Phys. 65, 1485 (1976). $^{4}$R. J. Le Roy, Comp. Phys. Comm. 52, 383 (1989).
Author Institution: Guelph-Waterloo Centre for Graduate Work in Chemistry, University of Waterloo; Benoit, University of Waterloo; Insitute for Laser Engineering, Osaka University; Steacie Institute for Molecular Sciences, National Research Council
Author Institution: Guelph-Waterloo Centre for Graduate Work in Chemistry, University of Waterloo; Benoit, University of Waterloo; Insitute for Laser Engineering, Osaka University; Steacie Institute for Molecular Sciences, National Research Council