ELECTRON-CAPTURE BY DOUBLY-CHARGED IONS FROM LASER-EXCITED ALKALI ATOMS .1. HE2-NA-ASTERISK(3P) COLLISIONS()

Authors
GIELER M AUMAYR F SCHWEINZER J KOPPENSTEINER W HUSINSKY W WINTER HP LOZHKIN K HANSEN JP
Citation
M. Gieler et al., ELECTRON-CAPTURE BY DOUBLY-CHARGED IONS FROM LASER-EXCITED ALKALI ATOMS .1. HE2-NA-ASTERISK(3P) COLLISIONS(), Journal of physics. B, Atomic molecular and optical physics, 26(14), 1993, pp. 2137-2151
Citations number
34
Categorie Soggetti
Physics, Atomic, Molecular & Chemical",Optics
Journal title
Journal of physics. B, Atomic molecular and optical physics → ACNP
ISSN journal
09534075
Volume
26
Issue
14
Year of publication
1993
Pages
2137 - 2151
Database
ISI
SICI code
0953-4075(1993)26:14<2137:EBDIFL>2.0.ZU;2-V
Abstract
State-selective single electron capture in slow (0.5-3 keV amu-1) coll isions of He2+ with laser-excited Na(3p) atoms has been studied by me ans of translational energy spectroscopy and the results compared with 64-state atomic orbital (AO) close coupling calculations, considering cross sections for electron capture into He+ (n = 3, 4, 5) final stat es for different impact energies. In addition, alignment effects have been studied by controlling the polarization of the exciting laser lig ht. The experimentally observed dependence on Na(3pSIGMA) and Na*(3pP I) initial state preparation is quantitatively reproduced by the AO ca lculations.