Angular asymmetry of low-energy electron emission in ion-atom collisions

Journal Article · Wed May 01 00:00:00 EDT 1996 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.53.3243· OSTI ID:283850

Fainstein, P D ^[1]; Gulyas, L ^[2]; Martin, F ^[3]; Salin, A ^[4]

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1. Laboratoire de Chimie Physique--Matiere et Rayonnement, Universite Pierre et Marie Curie, 11 rue Pierre et Marie Curie, 75231 Paris (France)
2. Institute of Nuclear Research of the Hungarian Academy of Sciences (ATOMKI), H--4001 Debrecen, P.O. Box 51 (Hungary)
3. Departamento de Quimica, Facultad de Ciencias CIX, Universidad Autonoma de Madrid, 28049 Madrid (Spain)
4. CNRS and Universite Bordeaux I, 351 Cours de la Liberation, 33405 Talence (France)

We show that two factors contribute to the forward-backward angular asymmetry in low-energy electron emission by ion impact: the deviation of the target potential from a pure Coulomb potential and the two-center effect. We perform calculations with various theories that include these two effects: the continuum-distorted-wave{endash}eikonal-initial-state (CDW-EIS) and the CDW approximations based on distorted-wave perturbation theory and a close-coupling calculation using a discrete representation of the continuum. The various theories give consistent results on the asymmetry but discrepancies remain between theory and experiment. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 283850
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 5 Vol. 53; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANGULAR DISTRIBUTION
CLOSE COUPLING APPROXIMATION
DISTORTED WAVE THEORY
ELECTRON EMISSION
ELECTRON-ATOM COLLISIONS
PERTURBATION THEORY