Title

Second-Order Distorted Wave Calculation for Electron-Impact Ionization of Helium to He⁺ (N = 1 and 2)

Abstract

Second-order distorted wave calculations are presented for electron-impact ionization of helium with the residual ion left in the n = 1 and 2 states at intermediate energies in coplanar asymmetric geometry. Whereas previous second-order calculations have used the plane wave Born approximation and have used approximations to simplify the evaluation of the second-order term, we perform a full distorted wave calculation and make no approximations in the evaluation of the second-order amplitude (i.e. we sum over all contributing intermediate states). The triple differential cross sections are compared with experimental measurements.

Department(s)

Physics

Sponsor(s)

National Science Foundation (U.S.)

Keywords and Phrases

Atomic Excitation and Ionization; Atomic Physics; Molecular Physics

Library of Congress Subject Headings

Stereochemistry

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2005 Institute of Physics - IOP Publishing, All rights reserved.

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