Neutral Dissociation of Hydrogen Following Photoexcitation of HCl at the Chlorine K Edge

Authors

D. L. Hansen, University of Nevada, Las VegasFollow
J. Cotter, University of Nevada, Reno
G. R. Fisher, Lawrence Berkeley National Laboratory
K. T. Leung, University of WaterlooFollow
R. Martin, University of Nevada, Las VegasFollow
Paul Neill, University of Nevada, RenoFollow
Rupert C. Perera, Lawrence Berkeley National LaboratoryFollow
I. A. Sellin, University of Tennessee - KnoxvilleFollow
Marc Simon, Universite Paris-SudFollow
Y. Uehara, Mitsubishi Electric Corporation
B. Vanderford, University of Nevada, Las Vegas
S. B. Whitfield, University of Wisconsin - Eau ClaireFollow

Document Type

Article

Publication Date

4-1998

Publication Title

Physical Review A

Volume

57

Issue

4

First page number:

2608

Last page number:

2611

Abstract

Time-of-flight mass spectroscopy was used to study the relaxation dynamics of HCl following photoexcitation in the vicinity of the Cl K edge (~2.8 keV) using monochromatic synchrotron radiation. At the lowest resonant excitation to the 6ơ* antibonding orbital, almost half of the excited molecules decay by emission of a neutral H atom, mostly in coincidence with a highly charged Cln1 ion. The present work demonstrates that neutral-atom emission can be a significant decay channel for excited states with very short lifetimes (1 fs). [S1050-2947(98)03604-X]

Keywords

Autoionization; Diffuse spectra; Electronic excitation; Hydrogen chloride; Photodissociation; Photodetachment; Photoionization; Predissociation

Disciplines

Analytical Chemistry | Atomic, Molecular and Optical Physics | Biological and Chemical Physics | Elementary Particles and Fields and String Theory | Physical Chemistry

Language

English

Permissions

Copyright American Physical Society, used with permission

Repository Citation

Hansen, D. L., Cotter, J., Fisher, G. R., Leung, K. T., Martin, R., Neill, P., Perera, R. C., Sellin, I. A., Simon, M., Uehara, Y., Vanderford, B., Whitfield, S. B. (1998). Neutral Dissociation of Hydrogen Following Photoexcitation of HCl at the Chlorine K Edge. Physical Review A, 57(4), 2608-2611.
https://digitalscholarship.unlv.edu/chem_fac_articles/61