Electron-energy spectra of H[sup [minus]] doubly excited states resulting from collisions of H[sup [minus]] with He

Journal Article · Thu Sep 01 04:00:00 EDT 1994 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.50.2309· OSTI ID:7072154

Kimura, M; Sato, H ^[1]; Hino, K; Matsuzawa, M ^[2]

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1. Argonne National Laboratory, Argonne, Illinois 60439 and Department of Physics, Rice University, Houston, Texas 77251-1892 (United States)
2. Department of Applied Physics and Chemistry, University of Electro-Communications, Chofu, Tokyo (Japan)

Electron-energy spectra for H[sup [minus]] doubly excited states resulting from collisions of H[sup [minus]] with He are rigorously calculated within a semiclassical molecular representation by including couplings between doubly excited states and continuum states and their interference with direct-detachment processes. An energy sampling procedure, based on the Gauss quadratures, is used to discretize continuum states. The present theoretical result clarifies mechanisms of excitation to doubly excited states, quantitatively reproduces the experimental spectra first observed by Risley and Geballe in 1974, separates the contributions from each of three doubly excited states, and identifies the cause of the interference between channels arising from double-electron excitation and direct detachment with simultaneous excitation.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 7072154
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 50:3; 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
BEAMS
COLLISIONS
ELECTRON DETACHMENT
ELECTRON SPECTRA
ELEMENTS
ENERGY RANGE
ENERGY SPECTRA
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
GASES
HELIUM
HYDROGEN 1 MINUS BEAMS
INTERFERENCE
ION BEAMS
ION COLLISIONS
ION-ATOM COLLISIONS
KEV RANGE
NONMETALS
RARE GASES
SPECTRA