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Low-Energy Elastic Electron Scattering by Atomic OxygenThe B-spline R-matrix method is employed to investigate the low-energy elastic electron scattering by atomic oxygen. Flexible non-orthogonal sets of radial functions are used to construct the target description and to represent the scattering functions. A detailed investigation regarding the dependence of the predicted partial and total cross sections on the scattering model and the accuracy of the target description is presented. The predicted angle-integrated elastic cross sections are in good agreement with experiment, whereas significant discrepancies are found in the angle-differential elastic cross sections near the forward direction. .The near-threshold results are found to strongly depend on the treatment of inner-core short-range correlation effects in the target description, as well as on a proper account of the target polarizability. A sharp increase in the elastic cross sections below 1 eV found in some earlier calculations is judged to be an artifact of an unbalanced description of correlation in the N-electron target structure and the (N+l)-electron-collision problems.
Document ID
20070020291
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Zatsarinny O.
(Drake Univ. Des Moines, IA, United States)
Bartschat, K.
(Drake Univ. Des Moines, IA, United States)
Tayal, S. S.
(Clark-Atlanta Univ. GA, United States)
Date Acquired
August 23, 2013
Publication Date
February 15, 2006
Publication Information
Publication: Journal of Phyics B: Atomic, Molecular and Optical Physics
Publisher: IOP Publishing Ltd.
Volume: 39
ISSN: 0953-4075
Subject Category
Atomic And Molecular Physics
Funding Number(s)
CONTRACT_GRANT: NAG5-13340
Distribution Limits
Public
Copyright
Other

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