Stuttgart 2012 – scientific programme

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A: Fachverband Atomphysik

A 28: Poster: Interaction of matter with ions

A 28.3: Poster

Wednesday, March 14, 2012, 16:30–19:00, Poster.V

State-selective study of electron capture by coincident recoil- ion and x-ray measurement — •Zhangyong Song, Xincheng Wang, Aditya Kelkar, Daniel Fischer, Robert Moshammer, and Joachim Ullrich — Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany

Electron capture in collisions between slow highly charge ions (HCI) and neutral atoms will be studied at the Heidelberg EBIT using a Reaction Microscope. In such collisions predominantly highly excited states in the projectile ions are populated that, for one-electron transitions, decay radiatively. In our experiments, the momentum of the recoil ions will be measured containing the information on the Q-values (i.e. inelasticity) of the collisions. The direct measurement of the x-rays emitted from the projectile subsequently will additionally enable to obtain information on the decay channels. Thus, a more complete picture of charge transfer and relaxation processes in HCI-atom collisions can be gained.