Title

Accuracy Of Local Exchange In The Calculation Of Continuum Wavefunctions

Abstract

It is well known that electron exchange can play an important role in electron-impact elastic, inelastic and ionization scattering from atoms and molecules. The proper theoretical treatment of exchange yields an inhomogeneous differential equation with a non-local exchange operator. To simplify the calculation, a local approximation is often made for this non-local operator. In this paper, we examine the accuracy of this approximation for the calculation of elastic scattering continuum waves in the presence of an argon ion with a single vacancy in the p-shell. It is found that one can reliably use the local exchange approximation for ionization leading to s-state vacancies but not p-state vacancies.

Publication Date

12-28-2002

Publication Title

Journal of Physics B: Atomic, Molecular and Optical Physics

Volume

35

Issue

24

Number of Pages

5121-5130

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1088/0953-4075/35/24/313

Socpus ID

0037192085 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0037192085

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