Hyperspherical approach to double-electron excitation of He by fast-ion impact. III. Excitation to the (2 l ,2 l prime ) manifold by multiply-charged-ion impact
Journal Article
·
· Physical Review A. General Physics; (United States)
- Department of Applied Physics and Chemistry, The University of Electro-Communications, 1-5-1 Chofu-ga-oka Chofu-shi, Tokyo, 182 (Japan)
- Argonne National Laboratory, Argonne, Illinois 60439 (United States) Department of Physics, Rice University, Houston, Texas 77251 (United States)
Double-electron-excitation processes of He atoms by multiply-charged-ion impact have been theoretically investigated using the close-coupling method in the MeV/u energy regime. Hyperspherical wave functions are adopted to take full account of the strongly correlated motion of two atomic electrons in He. The Born series is used to analyze the results of cross sections obtained by the close-coupling method. The cross section of the process to the 2{ital p}2{ital p} {sup 1}{ital D{ital e}} state is found to show the most rapid increase as the projectile charge {ital Z}{sub {ital p}} increases, while that to the 2{ital s}2{ital p} {sup 1}{ital P{ital o}} state indicates the slowest in the double-electron-excitation processes to the (2{ital l},2{ital l}{prime}) manifold. For high {ital Z}{sub {ital p}} at 1.5 MeV/u, the 2{ital p}2{ital p} {sup 1}{ital D{ital e}} cross section becomes dominant in the excitation processes to the (2{ital l},2{ital l}{prime}) manifold. Physical interpretation based on the rovibrator model is given concerning the correlated motion of two atomic electrons.
- OSTI ID:
- 7286141
- Journal Information:
- Physical Review A. General Physics; (United States), Journal Name: Physical Review A. General Physics; (United States) Vol. 46:3; ISSN 1050-2947; ISSN PLRAA
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:6496778
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Mon Jun 01 00:00:00 EDT 1992
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Related Subjects
664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CHARGED PARTICLES
COLLISIONS
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
GASES
HELIUM
IMPACT PARAMETER
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
MANY-BODY PROBLEM
MEV RANGE
MULTICHARGED IONS
NONMETALS
RARE GASES
TWO-BODY PROBLEM
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CHARGED PARTICLES
COLLISIONS
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
GASES
HELIUM
IMPACT PARAMETER
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
MANY-BODY PROBLEM
MEV RANGE
MULTICHARGED IONS
NONMETALS
RARE GASES
TWO-BODY PROBLEM