Neutral dissociation of hydrogen following photoexcitation of HCl at the chlorine K edge
- Department of Chemistry, University of Nevada, Las Vegas, Nevada89154-4003 (United States)
- Department of Physics, University of Nevada, Reno, Nevada89557-0058 (United States)
- Lawrence Berkeley National Laboratory, Berkeley, California94720 (United States)
- Department of Chemistry, University of Waterloo, Waterloo, Ontario, N2L3G1 (CANADA)
- Department of Physics, University of Tennessee, Knoxville, 37996 (United States)
- LURE, Universite Paris--Sud, Batiment 209D, 91405Orsay Cedex (France)
- CEA, DRECAM, SPAM, Batiment 522, CEN, Saday 91191, Gif-Yvette Cedex (France)
- Mitsubishi Electric Corporation, Amagasaki, Hyogo661 (Japan)
- Department of Physics and Astronomy, University of Wisconsin, Eau Claire, Wisconsin54702 (United States)
Time-of-flight mass spectroscopy was used to study the relaxation dynamics of HCl following photoexcitation in the vicinity of the Cl K edge ({approximately}2.8keV) using monochromatic synchrotron radiation. At the lowest resonant excitation to the 6{sigma}{sup {asterisk}} antibonding orbital, almost half of the excited molecules decay by emission of a neutral H atom, mostly in coincidence with a highly charged Cl{sup n+} ion. The present work demonstrates that neutral-atom emission can be a significant decay channel for excited states with very short lifetimes (1 fs). {copyright} {ital 1998} {ital The American Physical Society}
- OSTI ID:
- 625861
- Journal Information:
- Physical Review A, Journal Name: Physical Review A Journal Issue: 4 Vol. 57; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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