Quasiclassical methods for ion collisions with two-electron atoms

Journal Article · Wed May 01 04:00:00 EDT 1996 · Bulletin of the American Physical Society

OSTI ID:394162

Cohen, J S ^[1]

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1. Los Alamos National Lab., NM (United States)

Results of two generalizations of the classical-trajectory Monte Carlo (CTMC) method will be reported. The first is the model, termed CTMC-KW, originally proposed by Kirschbaum and Wilets that achieves quasiclassical stability of multi-electron atoms via effective potentials motivated by the Heisenberg and Pauli principles. It was recently shown that this model gives fairly accurate binding energies for all atoms. The second is a new model, termed CTMC-eb, that achieves stability via constraining potentials imposing lower bounds on the one-electron energies. The latter model is closer in spirit to the original CTMC method. Applications are made to single and double electron transfer and ionization cross sections for collisions of H{sup +}, He{sup 2+}, and Li{sup 3+} ions with the helium atom. All possible rearrangement processes are treated simultaneously and consistently. The cross sections will be compared with accurate experimental values.

• OSTI ID: 394162
• Report Number(s): CONF-9605105--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 41; ISSN BAPSA6; ISSN 0003-0503
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ALPHA PARTICLES
CROSS SECTIONS
ELECTRON TRANSFER
HELIUM
ION-ATOM COLLISIONS
IONIZATION
LITHIUM IONS
MONTE CARLO METHOD
PROTONS