Research Papers in Physics and Astronomy

 

Date of this Version

July 1991

Comments

Published by American Physical Society. Phys. Rev. Lett. 67, 185 (1991). http://prl.aps.org. Copyright © 1991 American Physical Society. Permission to use.

Abstract

Distorted-wave calculations of the triply differential cross sections for electron-impact ionization of H and He targets are presented for final-state electrons sharing 4-eV excess energy and leaving in opposite directions. The experimentally observed target dependence of the angular distributions is shown to stem essentially from short-range effects on the s-wave phase shifts of both incident and final-state continuum electrons.

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