Spin-resolved triple differential cross sections of xenon

Abstract

Spin-resolved triple differential (e, 2e) cross sections have been measured for ionization of xenon atoms by polarized electrons for energies between 40 and 200 eV. Significant spin up-down asymmetries in the (e, 2e) cross sections have been obtained at all energies. These are dominated by the interplay of orbital orientation, fine-structure interaction and exchange of the colliding electrons ('fine-structure effect'), whereas the influence of relativistic orbitals and of the continuum spin-orbit interaction is less important. The results are compared with recent DWBA calculations that include exchange with the electrons of the residual ion (exchange distortion), and satisfactory agreement is found. In particular, the discrepancies between theory and experiment at 40 eV and symmetric energy sharing are resolved.

Department(s)

Physics

Keywords and Phrases

Atomic physics; Atoms; Calculations; Ionization; Xenon; Differential cross section; DWBA calculation; Fine structure interaction; Electron energy levels

International Standard Serial Number (ISSN)

0953-4075

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1998 Institute of Physics - IOP Publishing, All rights reserved.

Publication Date

01 Oct 1998

Link to Full Text

Share

 
COinS