Frankfurt 2006 – wissenschaftliches Programm
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A: Atomphysik
A 10: Poster I: Wechselwirkung mit Elektronen und Ionen
A 10.3: Poster
Dienstag, 14. März 2006, 16:30–18:30, Labsaal
Basis-Generator-Method calculations for collisions of He+ ions with noble gas atoms — •T. Spranger1, M. Zapukhlyak1, M. Keim1,2, T. Kirchner1, and H.J. Lüdde2 — 1Institut für Theoretische Physik, TU Clausthal, Leibnizstraße 10, D-38678 Clausthal-Zellerfeld — 2Institut für Theoretische Physik, Goethe-Universität, Max-von-Laue-Straße 1, D-60438 Frankfurt/Main
He+-He collision processes (with and without active He+ projectile electron) and the effect of projectile potential choice have been investigated theoretically based on the nonperturbative basis generator method (BGM) [1,2] and its two center extension, TCBGM [3]. The analysis of single-particle solutions is performed on the level of the independent particle model with inclusion of the Pauli principle. Ionization, capture, and projectile electron loss cross sections are presented in the energy range from 1 to 10000 keV/amu. Good agreement with available experimental data is found except for projectile electron loss. A detailed comparison between TCBGM and BGM calculations as well as the importance of the correct asymptotic charges on both centers before the collision will be discussed.
[1] H.J. Lüdde et al., J. Phys. B 29, 4423 (1996)
[2] O.J. Kroneisen et al., J. Phys. A 32, 2141(1999)
[3] M. Zapukhlyak et al., J. Phys. B. 38, 2353 (2005)