Spin Dependence of (e, 2e) Collisions on Lithium at 54.4 eV
We present results of experimental measurements and theoretical calculations for the spin asymmetry, A(ΘB). of the triple differential cross section. Spin-polarized lithium atoms were ionized by spin-polarized electrons of 54.4 eV incident energy. The geometry was coplanar with one detector at a fixed angle (ΘA = 35° or 45°). Three data sets were obtained for ratios of shared energy EA/EB = 8.8, 2.4, and 1. For the most asymmetric set the convergent close-coupling method gives best agreement, whereas for the symmetric set the distorted-wave Born approximation seems to be in better agreement.
M. Streun and G. Baum and W. Blask and J. Rasch and I. Bray and D. V. Fursa and S. J. Jones and D. H. Madison and H. R. Walters and C. T. Whelan, "Spin Dependence of (e, 2e) Collisions on Lithium at 54.4 eV," Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 31, no. 19, pp. 4401-4411, Institute of Physics - IOP Publishing, Oct 1998.
The definitive version is available at http://dx.doi.org/10.1088/0953-4075/31/19/022
Keywords and Phrases
Approximation theory; Electron energy levels; Electron irradiation; Impact ionization; Lithium; Born approximation; Spin asymmetry; Atomic physics
International Standard Serial Number (ISSN)
Article - Journal
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