Darmstadt 2008 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 14: Posters: Interaction of matter with ions

A 14.11: Poster

Dienstag, 11. März 2008, 16:30–18:30, Poster C3

Projectile angular-differential cross sections for inelastic processes in ion-atom collisions — Myroslaw Zapukhlyak, •Nils Henkel, and Tom Kirchner — Institut für Theoretische Physik, TU Clausthal, 38678 Clausthal-Zellerfeld, Germany

Angular-differential projectile scattering has been investigated theoretically with the two-center extension of the nonperturbative basis generator method for various one- and two-electron inelastic transition processes in keV ion-atom collisions. The eikonal approximation has been used to extract angular-differential cross sections from impact-parameter-dependent transition amplitudes. Different models for one- and two-electron impact-parameter-dependent transition amplitudes have been applied in order to analyse the role of electron-electron correlation, quantum mechanical heavy-particle-electron couplings and the limits of the independent electron model in the collision systems under consideration. Quantum effects have been observed and identified via comparisons with classically calculated differential cross sections and experimental data.