Stuttgart 2012 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 50: Interaction of matter with ions

A 50.6: Vortrag

Freitag, 16. März 2012, 15:15–15:30, V57.05

Electron transfer and ionization in collisions of highly charged ions with Na(3s) and Na*(3p) — •Ina Blank¹, Sebastian Otranto², Ronald E. Olson³, and Ronnie Hoekstra¹ — ¹KVI Atomic and Molecular Physics, University of Groningen, The Netherlands — ²Departamento de Fisica, Universidad Nacional del Sur, Bahia Blanca, Argentina — ³Physics Department, Missouri University of Science and Technology, Rolla, USA

We present an experimental and theoretical study of single electron transfer and ionization in collisions of highly charged ions (N⁵⁺, O⁶⁺ and Ne⁸⁺) with ground state Na(3s) and excited state Na*(3p). The investigated collision energy ranges from 1 to 10 keV/amu which includes the classical orbital velocity of the target’s valence electron.

In order to test theory on the most basic level multiply differential cross sections are required. Experimental differential cross sections are obtained by combining recoil-ion momentum spectroscopy with a magneto-optically cooled Na atom target. The results are compared with three-body classical-trajectory Monte Carlo calculations which also provide impact parameter dependences of the processes under study. Differential cross for highly excited projectile final states feature an oscillatory structure for each presented collision system, which is also predicted by the theory.