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Lookup NU author(s): Mark Andrew Stevenson, Emeritus Professor Albert Crowe
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Experimental and theoretical triple-differential cross sections (TDCS) are presented for ionization of the outer 3p shell of argon by 200 eV electrons scattered through an angle of 15° and for ejected electron energies of 2, 5, 10 and 20 eV. A distorted-wave Born approximation (DWBA) and a hybrid DWBA-R-matrix (DWBA-RM2) calculation both reproduce the shapes of the TDCS when the slow electron is ejected near the momentum-transfer direction. Near the opposite direction, the DWBA-RM2 model also achieves good agreement with experiment for the higher ejected electron energies, but discrepancies are observed for the lower energies. This three-way joint study emphasizes that it is essential to include a proper treatment of exchange in modelling low-energy ionization.
Author(s): Stevenson M, Leighton GJ, Crowe A, Bartschat K, Vorov OK, Madison DH
Publication type: Article
Publication status: Published
Journal: Journal of Physics B: Atomic, Molecular and Optical Physics
Year: 2005
Volume: 38
Issue: 4
Pages: 433-440
ISSN (print): 0953-4075
ISSN (electronic): 1361-6455
Publisher: Institute of Physics Publishing Ltd.
URL: http://dx.doi.org/10.1088/0953-4075/38/4/010
DOI: 10.1088/0953-4075/38/4/010
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