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Phys. Rev. A 71, 010701(R) (2005) [4 pages]

Electron-impact excitation autoionization of helium in the S-wave limit

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D. A. Horner1,2, C. W. McCurdy2,3, and T. N. Rescigno2
1Department of Chemistry, University of California, Berkeley, California 94720, USA
2Chemical Sciences, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
3Department of Applied Science and Department of Chemistry, University of California, Davis, California 95616, USA

Received 23 September 2004; published 3 January 2005

Excitation of the autoionizing states of helium by electron impact is shown in calculations in the S-wave limit to leave a clear signature in the singly differential cross section for the (e,2e) process. It is suggested that such behavior should be seen generally in (e,2e) experiments on atoms that measure the single differential cross section.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.71.010701
DOI:
10.1103/PhysRevA.71.010701
PACS:
34.80.Dp