High-Resolution Laser Excitation Spectra of the A2Pi X2Sigma+ System of SrBr: The 0-0 and 1-0 Bands of Sr79Br and Sr81Br

Author: Coxon J.A.   Dickinson C.S.  

Publisher: Academic Press

ISSN: 0022-2852

Source: Journal of Molecular Spectroscopy, Vol.190, Iss.1, 1998-07, pp. : 150-156

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Abstract

Two bands (0-0 and 1-0) of the A2Pi-X2Sigma+ system of 88Sr79Br and 88Sr81Br have been analyzed rotationally for the first time. Well-resolved spectra were recorded by laser excitation spectroscopy with selective detection of fluorescence. For each band of the individual isotopomers, about 130 line positions with a measurement accuracy of 0.003 cm1 were employed in a least-squares fit of the excited state molecular parameters. The principal results for the A2Pi state are Ae = 302.432(1) cm1 and Re = 2.7147(1) A. Copyright 1998 Academic Press.