Electron impact ionization dynamics of para-benzoquinone.
Triple differential cross sections (TDCSs) for the electron impact ionization of the unresolved combination of the 4 highest occupied molecular orbitals (4b3g, 5b2u, 1b1g, and 2b3u) of para-benzoquinone are reported. These were obtained in an asymmetric coplanar geometry with the scattered electron being observed at the angles -7.5°, -10.0°, -12.5° and -15.0°. The experimental cross sections are compared to theoretical calculations performed at the molecular 3-body distorted wave level, with a marginal level of agreement between them being found. The character of the ionized orbitals, through calculated momentum profiles, provides some qualitative interpretation for the measured angular distributions of the TDCS.
School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide SA 5001, Australia.
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Jones
Department of Physics, Missouri University of Science and Technology, Rolla, Missouri 65409, USA.
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E
Ali
Department of Physics, State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China.
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CG
Ning
Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
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J
Colgan
Science Institute and Department of Chemistry, University of Iceland, Dunhagi 3, 107 Reykjavík, Iceland.
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O
Ingólfsson
Department of Physics, Missouri University of Science and Technology, Rolla, Missouri 65409, USA.
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Madison
School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide SA 5001, Australia.
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Brunger