Dependence of NO rotational photoionization propensity rules on electron kinetic energy

Creators: Song, Xinbei; Sekreta, Ellen; Reilly, James P.; Rudolph, H.; McKoy, V.

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Abstract

In order to study the effect of photoelectron kinetic energy on rotational photoionization propensity rules, rotationally resolved laser photoelectron spectra were measured for excitation of specific rovibronic levels in the D 2Sigma+ (3psigma) Rydberg state of NO and their subsequent ionization by radiation at several wavelengths. The measured and calculated ion rotational branching ratios both show a significant dependence on photoelectron energy. Comparison between experimental data and theoretical calculations suggests that a strong DeltaN=0 peak in the spectra is caused by an interaction between particular vibronic levels of the A 2Sigma+ (v=4) and D 2Sigma+ (v=0) Rydberg states.

Additional Information

Copyright © 1989 American Institute of Physics. Received 1 May 1989; accepted 7 August 1989. The research at Indiana University was supported by the National Science Foundation under Grant No. CHE-8800991. The research at the California Institute of Technology was supported by the National Science Foundation under Grant No. CHE-8521391, by AFOSR under Grant No. 87-0039, and by the Office of Health and Environmental Research of DOE (DE-FG03-87ER60513). The authors also acknowledge use of the resources of the San Diego SuperComputer Center which is supported by the National Science Foundation. H.R. and V.M. would like to thank Dr. H. Lefebvre-Brion and Dr. R. Cave for helpful discussions. H.R. gratefully acknowledges the support of the Danish Natural Science Research Council and a NATO Science Fellowship.

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