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Shape resonances in the photoionization of N_2O

Braunstein, M. and McKoy, V. (1987) Shape resonances in the photoionization of N_2O. Journal of Chemical Physics, 87 (1). pp. 224-228. ISSN 0021-9606. doi:10.1063/1.453620.

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We report the results of studies of the cross sections and photoelectron asymmetry parameters for photoionization of the 7σ level of N_2O using Hartree–Fock photoelectron continuum orbitals. These studies were motivated by recent measurements which showed significant non‐Franck–Condon vibrational distributions at low photoelectron energies where previously only autoionizing resonances, but no shape resonance, had been identified. Our results establish that there are two σ shape resonances in the 7σ ionization continuum, a pronounced resonance at low photoelectron energies, and another at higher energy which is essentially obscured in the vibrationally unresolved cross sections. The shape resonant structure that emerges from these studies differs significantly from the predictions of previous model studies. Studies in progress reveal a rich and unusual dependence of these resonances on changes in internuclear distances.

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Additional Information:© 1987 American Institute of Physics. Received 12 February 1987; accepted 25 March 1987. This material is based upon research supported by the National Science Foundation under Grant No. CHE85-21391. The authors also acknowledge use of the resources of the San Diego SuperComputer Center which is supported by the National Science Foundation.
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Issue or Number:1
Classification Code:PACS: 33.80.Eh, 31.15.A-
Record Number:CaltechAUTHORS:20120622-083516487
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Official Citation:Shape resonances in the photoionization of N_2O M. Braunstein and V. McKoy J. Chem. Phys. 87, 224 (1987);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:32025
Deposited By: Ruth Sustaita
Deposited On:22 Jun 2012 15:47
Last Modified:09 Nov 2021 20:03

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