A Second-Order Distorted-Wave Model for the Excitation of the 2¹p State of Helium by Electron and Positron Impact

Author

Don H. Madison, Missouri University of Science and TechnologyFollow
Kieth H. Winters

Abstract

The second-order distorted-wave amplitude is evaluated in a high-energy approximation. In this approximation, the non-local second-order distorting potential is replaced by a local second-order potential obtained in the closure approximation. It is shown that for the case of electron excitation of the 2¹P state of helium, the second-order effects are fairly large and improve agreement with experimental data. It is also noted, however, that the best agreement with experimental data may be obtained through a hybrid first-order calculation. Results for positron excitation of helium are also given and discussed.

Recommended Citation

D. H. Madison and K. H. Winters, "A Second-Order Distorted-Wave Model for the Excitation of the 2¹p State of Helium by Electron and Positron Impact," Journal of Physics B: Atomic and Molecular Physics, vol. 16, no. 23, pp. 4437 - 4450, Institute of Physics - IOP Publishing, Jul 1983.

The definitive version is available at https://doi.org/10.1088/0022-3700/16/23/025

Department(s)

Physics

International Standard Serial Number (ISSN)

0022-3700

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1983 Institute of Physics - IOP Publishing, All rights reserved.

Publication Date

01 Jul 1983