We report measurements of differential and integral cross sections for electron excitation of the Schumann–Runge continuum, longest band, and second band electronic states in molecular oxygen. The energy range of the present study is 15–200 eV, with the angular range of the differential cross section (DCS) measurements from 2 to 130°. A generalized oscillator strength analysis is then employed in order to derive integral cross sections (ICSs) from the corresponding DCSs, and these ICSs are compared with relevant energy and oscillator strength scaled Born cross section (BEf-scaling [Y.-K. Kim, J. Chem. Phys. 126, 064305 (2007)]) results determined as a part of this investigation. Interestingly, while the present Schumann–Runge continuum and second band ICSs were in reasonable agreement with the respective BEf-scaling results, agreement for the longest band was poor below 100 eV with a possible reason for this apparently anomalous behavior being canvassed here. Finally, where possible all present data are compared with the results from earlier measurements and calculations with the level of agreement found being very good in some cases and marginal in others.
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14 February 2011
Research Article|
February 10 2011
Electron excitation of the Schumann–Runge continuum, longest band, and second band electronic states in O2 Available to Purchase
Daisuke Suzuki;
Daisuke Suzuki
1Department of Physics,
Sophia University
, Chiyoda-ku, Tokyo 102-8554, Japan
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Hidetoshi Kato;
Hidetoshi Kato
1Department of Physics,
Sophia University
, Chiyoda-ku, Tokyo 102-8554, Japan
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Mizuha Ohkawa;
Mizuha Ohkawa
1Department of Physics,
Sophia University
, Chiyoda-ku, Tokyo 102-8554, Japan
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Kazutoshi Anzai;
Kazutoshi Anzai
1Department of Physics,
Sophia University
, Chiyoda-ku, Tokyo 102-8554, Japan
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Hiroshi Tanaka;
Hiroshi Tanaka
1Department of Physics,
Sophia University
, Chiyoda-ku, Tokyo 102-8554, Japan
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Paulo Limão-Vieira;
Paulo Limão-Vieira
2Laboratório de Colisões Atómicas e Moleculares, Departamento de Física, CEFITEC,
Universidade Nova de Lisboa
, P-2829-516 Caparica, Portugal
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Laurence Campbell;
Laurence Campbell
3ARC Centre for Antimatter-Matter Studies, School of Chemical and Physical Sciences,
Flinders University
, GPO Box 2100, Adelaide, South Australia 5001, Australia
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Michael J. Brunger
Michael J. Brunger
a)
3ARC Centre for Antimatter-Matter Studies, School of Chemical and Physical Sciences,
Flinders University
, GPO Box 2100, Adelaide, South Australia 5001, Australia
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Daisuke Suzuki
1
Hidetoshi Kato
1
Mizuha Ohkawa
1
Kazutoshi Anzai
1
Hiroshi Tanaka
1
Paulo Limão-Vieira
2
Laurence Campbell
3
Michael J. Brunger
3,a)
1Department of Physics,
Sophia University
, Chiyoda-ku, Tokyo 102-8554, Japan
2Laboratório de Colisões Atómicas e Moleculares, Departamento de Física, CEFITEC,
Universidade Nova de Lisboa
, P-2829-516 Caparica, Portugal
3ARC Centre for Antimatter-Matter Studies, School of Chemical and Physical Sciences,
Flinders University
, GPO Box 2100, Adelaide, South Australia 5001, Australia
a)
Electronic mail: [email protected].
J. Chem. Phys. 134, 064311 (2011)
Article history
Received:
November 01 2010
Accepted:
December 13 2010
Citation
Daisuke Suzuki, Hidetoshi Kato, Mizuha Ohkawa, Kazutoshi Anzai, Hiroshi Tanaka, Paulo Limão-Vieira, Laurence Campbell, Michael J. Brunger; Electron excitation of the Schumann–Runge continuum, longest band, and second band electronic states in O2. J. Chem. Phys. 14 February 2011; 134 (6): 064311. https://doi.org/10.1063/1.3533442
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