Single- and double-charge-exchange cross sections for Ar{sup {ital q}+}+H{sub 2} ({ital q}=6, 7, 8, 9, and 11) collisions from 6 eV to 11 keV

Journal Article · Tue Aug 01 04:00:00 EDT 1995 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.52.1206· OSTI ID:83963

Kravis, S; Saitoh, H; Okuno, K; Soejima, K; Kimura, M; Shimamura, I; Awaya, Y; Kaneko, Y; Oura, M; Shimakura, N ^[1]

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1. The Institute of Physical and Chemical Research (RIKEN), Hirosawa 2-1, Wako-shi, Saitama, 351-01 (Japan)

The cross sections for single-electron capture, including transfer ionization, and for double-electron capture, have been measured for Ar{sup {ital q}+}+H{sub 2} for {ital q}=6, 7, 8, 9, and 11 with projectile energies from {ital q} eV to {ital q} keV. Theoretically, the cross sections for Ar{sup 6+} and Ar{sup 8+} impact were calculated using a molecular-orbital expansion method in the energy region from 240 eV to 80 keV, and are in good agreement with experiment. The single-electron-capture cross sections were found to be more than one order of magnitude larger than those for double capture in both experiment and theory. The single-electron-capture cross sections were also compared to the Langevin cross section, a scaling law developed by Mueller and Salzborn [Phys. Lett. 62A, 391 (1977)], and the absorbing sphere model.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 83963
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 2 Vol. 52; ISSN PLRAAN; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ARGON IONS
CHARGE EXCHANGE
CROSS SECTIONS
ELECTRON CAPTURE
EV RANGE 100-1000
EXCITED STATES
HYDROGEN
KEV RANGE 01-10
KEV RANGE 10-100