Electron capture from excited hydrogen atoms by highly charged beryllium and carbon ions
Authors:
- 1 April 2009
- conference paper
- Published by IOP Publishing in Journal of Physics: Conference Series
- Vol. 163 (1) , 012045
Abstract
The cross sections for electron capture in collisions of bare and helium-like ions of Be and C with excited H atoms (n = 2) have been calculated by a molecular-state close-coupling method in a collision energy range of 60 eV/amu-6 keV/amu. Calculated results show that these cross sections are remarkably larger than those for collisions with ground-state H atoms. For example, for collisions of Be2+, Be4+, C4+, and C6+ ions with H(2s) atoms at ~1 keV/amu, the cross sections are 190 _ 10–16 cm2, 610 _ 10–16 cm2, 920 _ 10–16 cm2, and 720 _ 10–16 cm2, respectively. In contrast, the cross sections for collisions with ground-state H atoms are 25 _ 10–16 cm2, 35 _ 10–16 cm2, 30 _ 10–16 cm2, and 40 _ 10–16 cm2, respectively.Keywords
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