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A comparative experimental and theoretical investigation of the electron-impact double ionization of He in the keV regime

Kheifets, Anatoli; Bray, Igor; Lahmam-Bennani, A; Duguet, A; Taouil, I


We determine, both experimentally and theoretically, the fully resolved fivefold differential cross section (5DCS) of double ionization of helium by 5.6 keV electron impact. Symmetric energy sharing between the two ejected electrons is investigated at the excess energy of 8 and 20 eV with 0.22 and 0.24 au momentum transfer, respectively. Absolute 5DCS are determined by normalizing the experimental data to the well established single-ionization cross sections. The calculation is performed by...[Show more]

CollectionsANU Research Publications
Date published: 1999
Type: Journal article
Source: Journal of Physics B: Atomic, Molecular and Optical Physics
DOI: 10.1088/0953-4075/32/21/301


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