Dresden 2011 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 26: Poster III

A 26.3: Poster

Donnerstag, 17. März 2011, 16:00–18:30, P2

Kinematically complete measurements for electron capture in collisions of keV energy ions with atomic and molecular targets. — •Aditya Kelkar, Xincheng Wang, Daniel Fischer, Robert Moshammer, and Joachim Ullrich — Max Planck Institut fuer Kernphysik, Heidelberg, Germany

We report on fully differential cross section measurements of electron capture to slow heavy ions using a Reaction Microscope. The Reaction Microscope is optimized for efficient detection of recoil-ions with large momentum and high energy (up to 200 eV) electrons. In order to achieve this we implemented large area position sensitive MCP detectors with central holes for the passage of the projectile beam. A ring electrode was also implemented within the recoil-ion drift tube for collection of recoil-ions produced with large transverse momentum on to the MCP. The experimental setup has been augmented with a low energy beam line optimized for transfer of few keV/q singly and doubly charged atomic/molecular ions obtained from a penning ion source or highly charged ions from an EBIT. The present experimental setup is adequate for collecting fully differential data sets for several reaction channels like single capture, double capture and resonant capture etc. Details of the experimental setup and results of ongoing measurements will be presented.