Spin-resolved triple differential cross sections of xenon
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.
C. Mette et al., "Spin-resolved triple differential cross sections of xenon," Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 31, no. 20, pp. 4689-4700, Institute of Physics - IOP Publishing, Oct 1998.
The definitive version is available at http://dx.doi.org/10.1088/0953-4075/31/20/024
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)
Article - Journal
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