THE $A^{6}\Sigma^{+} - X^{6}\Sigma^{+}$ TRANSITION OF CrH, EINSTEIN COEFFICIENTS AND AN IMPROVED DESCRIPTION OF THE A STATE

Bauschlicher, Charles W., Jr.; Ram, R. S.; Bernath, P. F.; Parsons, C. G.; Galehouse, Daniel

THE $A^{6}\Sigma^{+} - X^{6}\Sigma^{+}$ TRANSITION OF CrH, EINSTEIN COEFFICIENTS AND AN IMPROVED DESCRIPTION OF THE A STATE

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Date

2001

Authors

Bauschlicher, Charles W., Jr.

Publisher

Ohio State University

Abstract

The spectrum of CrH has been reinvestigated in the $9000−15000 c m −1$ region using the Fourier transform spectrometer of the National Solar Observatory. The 1-0 and 1-1 bands of the $A 6 Σ + − X 6 Σ +$ transition have been measured and improved spectroscopic constants have been determined. A value for the 2-0 band origin has been obtained from the band head using estimated spectroscopic constants. These data provide a set of improved equilibrium vibrational and rotational constants for the $A 6 Σ +$ state. An accurate description of the A-X transition has been obtained using a multireference configuration interaction approach. The inclusion of both scalar relativity and Cr 3s3p correlation are required to obtain a good description of both states. The ab initio computed Einstein coefficients and radiative lifetimes are reported.

Description

Author Institution: NASA Ames Research Center; Space Technology Division, University of Arizona; Department of Chemistry, University of Waterloo; Department of Chemistry, University of Dayton; Department of Physics, University of Dayton

URI

http://hdl.handle.net/1811/20301

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Abstracts of OSU International Symposium on Molecular Spectroscopy 2000-2009

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