Phys. Rev. A 53, 3243–3246 (1996)Angular asymmetry of low-energy electron emission in ion-atom collisionsReceived 16 November 1995; published in the issue dated May 1996 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–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. © 1996 The American Physical Society. © 1996 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.53.3243
DOI:
10.1103/PhysRevA.53.3243
PACS:
34.50.Fa
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