Experimental and theoretical studies of the He sup 2+ -He system: Differential cross sections for direct, single-, and double-charge-transfer scattering at keV energies

Journal Article · Fri May 01 00:00:00 EDT 1992 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.45.6388· OSTI ID:7113662

Gao, R S; Dutta, C M; Lane, N F; Smith, K A; Stebbings, R F ^[1]; Kimura, M ^[2]

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1. Physics Department, Rice University, P.O. Box 1892, Houston, Texas 77251 (United States) Space Physics and Astronomy Department, Rice University, P.O. Box 1892, Houston, Texas 77251 (United States) Rice Quantum Institute, Rice University, P.O. Box 1892, Houston, Texas 77251 (United States)
2. Argonne National Laboratory, Argonne, Illinois 60439 (United States) Department of Physics, Rice University, Houston, Texas 77251 (United States)

Measurements and calculations of differential cross sections for direct scattering, single charge transfer, and double charge transfer in collisions of 1.5-, 2.0-, 6.0-, and 10.0-keV {sup 3}He{sup 2+} with a {sup 4}He target are reported. The measurements cover laboratory scattering angles below 1.5{degree} with an angular resolution of about 0.03{degree}. A quantum-mechanical molecular-state representation is employed in the calculations; in the case of single charge transfer a two-state close-coupling calculation is carried out taking into account electron-translation effects. The theoretical calculations agree well with the experimental results for direct scattering and double charge transfer. For single charge transfer, the agreement is less satisfactory because of the limited number of molecular states incorporated in our calculations. The present calculation identifies the origins of oscillatory structures observed in the differential cross sections.

• DOE Contract Number: W-31-109-ENG-38
• OSTI ID: 7113662
• Journal Information: Physical Review A. General Physics; (United States), Vol. 45:9; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
HELIUM 4
ION-ATOM COLLISIONS
HELIUM IONS
CATIONS
CHARGE EXCHANGE
CROSS SECTIONS
KEV RANGE 01-10
ATOM COLLISIONS
CHARGED PARTICLES
COLLISIONS
ENERGY RANGE
EVEN-EVEN NUCLEI
HELIUM ISOTOPES
ION COLLISIONS
IONS
ISOTOPES
KEV RANGE
LIGHT NUCLEI
NUCLEI
STABLE ISOTOPES
664300* - Atomic & Molecular Physics- Collision Phenomena- (1992-)