State-selective double-electron capture in He/sup 2+/ + He collisions at intermediate impact energies

Journal Article · Wed Feb 15 04:00:00 EST 1989 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.39.1741· OSTI ID:6533173

Jain, A; Lin, C D; Fritsch, W

We report calculations of cross sections for electron capture to individual doubly excited states for 150--500-keV /sup 3/He/sup 2+/ ions colliding with helium atoms. By adopting an independent-electron approximation, the capture probability to each doubly excited state is calculated in terms of single-capture amplitudes to each substate which are properly weighted with configuration-interaction coefficients. The validity of such an approximation is checked by comparing the results with calculations in which the electron correlation was considered explicitly. The calculated final results for double capture to the (2s/sup 2/) /sup 1/S, (2s2p)/sup 1/P, and (2p/sup 2/)/sup 1/D states are in fair agreement with the recent experiment of Zouros et al. (Phys. Rev. A 35, 1963 (1987)).

• Research Organization: Physics Department, Kansas State University, Manhattan, Kansas 66506
• OSTI ID: 6533173
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Journal Issue: 4 Vol. 39:4; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CAPTURE
CHARGE STATES
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
DATA
ELECTRON CAPTURE
ELEMENTS
ENERGY LEVELS
ENERGY RANGE
EXCITED STATES
FLUIDS
GASES
HELIUM
HELIUM IONS
INFORMATION
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
KEV RANGE
KEV RANGE 100-1000
NONMETALS
NUMERICAL DATA
RARE GASES
THEORETICAL DATA