Double electron capture and angular distribution of ejected electrons in Ne{sup 8+}-He collisions

Journal Article · Sat May 01 04:00:00 EDT 1993 · Bulletin of the American Physical Society

OSTI ID:281563

Chen, Z; Lin, C D ^[1]

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1. Kansas State Univ., Manhattan, KS (United States)

Double electron capture cross sections to individual doubly excited states and autoionizing electron spectra at fixed angles for Ne{sup 8+}-He collisions are calculated and analyzed for collision energies from 20 to 80 keV/amu. An independent-electron approximation is adopted where the amplitudes for double capture are derived from the anti-symmetrized product of single electron capture amplitudes properly weighted with the configuration interaction coefficients. By choosing the quantization axis to be perpendicular to the collision plane, we also study the propensity rule for the M distribution of the cross section for each doubly excited state. The electron spectra at zero degree are compared with the experiments. At 80 keV/amu collision energy, our theoretical spectrum agrees with the experiment very well. At lower energies, the agreements are not as good, but the dominant features are well predicted.

• OSTI ID: 281563
• Report Number(s): CONF-9305421--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 38; ISSN 0003-0503; ISSN BAPSA6
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANGULAR DISTRIBUTION
AUTOIONIZATION
CROSS SECTIONS
ELECTRON CAPTURE
HELIUM
ION-ATOM COLLISIONS
NEON IONS