"Accuracy of Local Exchange in the Calculation of Continuum Wavefunctio" by D. A. Biava, Klaus Bartschat et al.
 

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.

Department(s)

Physics

Keywords and Phrases

Approximation theory; Continuum mechanics; Differential equations; Electron scattering; Ionization; Molecular physics; Wave equations; Continuum wavefunctions; Atomic physics

International Standard Serial Number (ISSN)

0953-4075

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2002 Institute of Physics - IOP Publishing, All rights reserved.

Publication Date

01 Dec 2002

Share

 
COinS
 
 
 
BESbswy