Electron capture and excitation in collisions of O{sup +}({sup 4}S,{sup 2}D,{sup 2}P) with H{sub 2} molecules

Journal Article · Tue Jun 01 04:00:00 EDT 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.69.062715· OSTI ID:20643769

Pichl, Lukas; Yan, Li; Liebermann, Heinz-Peter; Buenker, Robert J; Kimura, Mineo ^[1]

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1. Foundation of Computer Science Laboratory, University of Aizu, Tsuruga, Ikki, Aizuwakamatsu, Fukushima 965-8580 (Japan)

Using an electronic-state close-coupling method, we treated the electron capture and excitation processes of O{sup +} ions both in ground state O{sup +}({sup 4}S) and metastable states O{sup +*}({sup 2}D) and O{sup +*}({sup 2}P) in collisions with the H{sub 2} molecule. In the ground-state projectile energy region considered (from 50 eV/amu to 10 keV/amu), the experimental data vary by orders of magnitude: our results smoothly connect to the data by Flesch and Ng [J. Chem. Phys. 94, 2372 (1991)] and Xu et al. [J. Phys. B 23, 1235 (1990)] at low energy and agree with Phaneuf et al. [Phys. Rev. A 17, 534 (1978)] in the high-energy region. The present values differ from Sieglaff et al. [Phys. Rev. A 59, 3538 (1999)] and Nutt et al. [J. Phys. B 12, L157 (1979)], especially in the energy region below 1 keV/amu. We provide the first calculated state-resolved cross sections of electron capture and target-projectile electronic excitations for the O{sup +}({sup 4}S,{sup 2}D,{sup 2}P)-H{sub 2} collision system.

• OSTI ID: 20643769
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 69; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
74 ATOMIC AND MOLECULAR PHYSICS
CATIONS
CHARGE EXCHANGE
COUPLING
CROSS SECTIONS
ELECTRON CAPTURE
EV RANGE
EXCITATION
GROUND STATES
HYDROGEN
ION-MOLECULE COLLISIONS
KEV RANGE
METASTABLE STATES
MOLECULES
OXYGEN
OXYGEN IONS