Photofragmentation of third-row hydrides following photoexcitation at deep-core levels

Journal Article · Sun Nov 01 04:00:00 EST 1998 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.58.3757· OSTI ID:663715

Hansen, D L; Arrasate, M E; Hemmers, O; Martin, R; Vanderford, B; Lindle, D W ^[1]; Cotter, J; Neill, P ^[2]; Fisher, G R; Perera, R C ^[3]; Leung, K T ^[4]; Levin, J C; Sellin, I A ^[5]; Simon, M ^[6]; Uehara, Y ^[7]; Whitfield, S B ^[8]

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1. Department of Chemistry, University of Nevada, Las Vegas, Nevada 89154-4003 (United States)
2. Department of Physics, University of Nevada, Reno, Nevada 89557-0058 (United States)
3. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
4. Department of Chemistry, University of Waterloo, Waterloo, Ontario, N2L 3G1 (CANADA)
5. Department of Physics, University of Tennessee, Knoxville, Tennessee 37996 (United States)
6. Laboratoire pour lUtilisation du Rayonnement Electromagnetique, Batiment 209D, Universite Paris--Sud, 91405 Orsay Cedex, France and Commissariat a lEnergie Atomique, Department de Recherche sur lEtat Condense, les Atom et les Molecules, Service des Photons, Atomes et Molecules, Batiment 522, CEN Saclay, 91191 Gif-sur-Yvette Cedex (France)
7. Mitsubishi Electric Corporation, Amagasaki, Hyogo 661 (Japan)
8. Department of Physics and Astronomy, University of Wisconsin, Eau Claire, Wisconsin 54702 (United States)

The relaxation dynamics of HCl, DCl, H{sub 2}S, and D{sub 2}S following photoexcitation in the vicinities of the Cl and S {ital K}-shell thresholds ({approximately}2.8thinspkeV for Cl, {approximately}2.5 keV for S) were studied by means of ion time-of-flight mass spectroscopy. In all cases, the onset of pre-edge core-shell photoionization precedes the formation on resonance of a significant amount of neutral hydrogen as well as postcollision-interaction effects above threshold. Examination of the width of the H{sup +} peak in spectra taken with the analyzer parallel and perpendicular to the polarization vector of the incident light indicates that on resonance, the photofragmentation asymmetry parameter, {beta}, is approximately two for HCl, and is clearly positive for H{sub 2}S. thinsp {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 663715
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 5 Vol. 58; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
DEUTERIUM COMPOUNDS
ELECTRONIC STRUCTURE
EXCITATION
EXCITED STATES
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
LINE WIDTHS
PHOTOIONIZATION
PHOTOLYSIS
PHOTON-MOLECULE COLLISIONS
RELAXATION
S STATES
TIME-OF-FLIGHT METHOD