Stephens, J. A. and Braunstein, M. and McKoy, V. (1988) Shape-resonance-induced non-Franck–Condon effects in (2+1) resonance enhanced multiphoton ionization of the C 3Πg state of O2. Journal of Chemical Physics, 89 (6). pp. 3923-3925. ISSN 0021-9606 http://resolver.caltech.edu/CaltechAUTHORS:STEjcp88b
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Abstract
We show that strong non-Franck–Condon effects observed in (2+1) resonance enhanced multiphoton ionization of the C 3Pig state of O2 are due to the ksigmau shape resonance previously observed in single-photon studies of diatomic molecules. Calculated vibrational branching ratios for the v=2,3 levels of the C 3Πg state are in reasonable agreement with experiment. Certain discrepancies remain in comparing theoretical results with the measured spectra, and possible electron-correlation effects which underly this are discussed.
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| Additional Information: | Copyright © 1988 American Institute of Physics. Received 16 May 1988; accepted 6 July 1988. The authors gratefully acknowledge helpful discussions with Sham Dixit. This work was supported by grants from the National Science Foundation (CHE-8521391), Air Force Office of Scientific Research (Contract No. 87-0039), and the Office of Health and Environmental Research of the U.S. Department of Energy (DE-FG03-87ER60513). We also acknowledge use of resources of the San Diego Supercomputer Center, which is supported by the National Science Foundation. Arthur Amos Noyes Laboratory of Chemical Physics, Contribution No. 7777. | ||||||||
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| Subject Keywords: | OXYGEN, MULTI−PHOTON PROCESSES, PHOTOIONIZATION, PHOTOELECTRON SPECTROSCOPY, FRANCK−CONDON PRINCIPLE, RYDBERG STATES, VIBRATIONAL STATES, BRANCHING RATIO, ELECTRON CORRELATION | ||||||||
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| Record Number: | CaltechAUTHORS:STEjcp88b | ||||||||
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:STEjcp88b | ||||||||
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| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||
| ID Code: | 12374 | ||||||||
| Collection: | CaltechAUTHORS | ||||||||
| Deposited By: | Archive Administrator | ||||||||
| Deposited On: | 14 Nov 2008 06:44 | ||||||||
| Last Modified: | 26 Dec 2012 10:31 |
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