Molecular treatment of electron capture in collisions of O[sup 5+] ions with H atoms at energies from 6 eV/amu to 10 keV/amu: Transfer-excitation processes

Journal Article · Mon Nov 01 04:00:00 EST 1993 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.48.3652· OSTI ID:5991399

Shimakura, N ^[1]; Suzuki, S ^[2]; Kimura, M ^[3]

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1. General Education Department, Niigata University, Niigata 950-21 (Japan)
2. Department of Chemistry, Faculty of Science, Niigata University, Niigata 950-21 (Japan)
3. Argonne National Laboratory, Argonne, Illinois 60439 (United States) Department of Physics, Rice University, Houston, Texas 77251 (United States)

Electron capture in collisions of O[sup 5+] ions with H atoms is investigated theoretically by using a semiclassical molecular-orbital method in the energy range from 6 eV/amu to 10 keV/amu. Electron translation effects are properly included (to the first order of relative velocity). The primary contributors to electron capture are O[sup 4+](2[ital s]4[ital l]) states. However, two-electron transfer-excitation processes are also important in the entire energy range studied. The contribution from these processes amounts to 50% of the total at 1 keV/amu; it remains at 27% even at studied energy as low as 6 eV/amu. The O[sup 4+](2[ital p]3[ital p] [sup 3][ital S]) and O[sup 4+](2[ital p]3[ital d] [sup 3][ital P]) states for the triplet and the O[sup 4+](2[ital p]3[ital p] [sup 1][ital S]) state for the singlet contribute dominantly to the transfer-excitation process at low collision energies. Results of an analysis based on polarization parameters for electron capture are reported.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5991399
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 48:5; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CALCULATION METHODS
CAPTURE
CHARGED PARTICLES
COLLISIONS
ELECTRON CAPTURE
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EV RANGE
EXCITATION
HYDROGEN
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
KEV RANGE
MOLECULAR ORBITAL METHOD
MULTICHARGED IONS
NONMETALS
OXYGEN IONS