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Lookup NU author(s): Professor Alan Dickinson
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First principles calculations of mutual neutralization in Na++H- collisions have been performed for collision energies between 0.01 and 100 eV. A ten-state molecular expansion has been employed with a quantal description of the relative motion and adiabatic ab initio calculation for the two active electrons. While results for the total neutralization cross section are generally within 15% of those obtained by Janev and Radulovic (1978), cross sections into the less populated final states differ much more, by in excess of an order of magnitude for the 3p level. At 100 eV satisfactory agreement is obtained with the results of Olson and Kimura (1985). The low-temperature rate coefficient for mutual neutralization is calculated to be 3.0×10-7 (T/300 K)-1/2 cm3 s-1. Cross sections for ion-pair production in Na(3l)+H collisions have also been determined, showing substantial differences from the results of Janev and Radulovic (1978), particularly for production from 3s at low energy. Differences of 5% and 35% from the calculations of Olson and Kimura (1985) for 3s and 3p, respectively, at 100 eV are obtained.
Author(s): Dickinson AS; Poteau R; Gadea FX
Publication type: Article
Publication status: Published
Journal: Journal of Physics B: Atomic, Molecular and Optical Physics
Year: 1999
Volume: 32
Issue: 23
Pages: 5451-5461
Print publication date: 14/12/1999
ISSN (print): 0953-4075
ISSN (electronic): 1361-6455
Publisher: Institute of Physics Publishing Ltd.
URL: http://dx.doi.org/10.1088/0953-4075/32/23/303
DOI: 10.1088/0953-4075/32/23/303
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