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Hannover 2010 – scientific programme

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A: Fachverband Atomphysik

A 8: Poster I

A 8.35: Poster

Tuesday, March 9, 2010, 16:30–19:00, Lichthof

Fully differential measurements for electron capture in collisions of slow Heq+ and Neq+ with He and Ne. — •Aditya H. Kelkar, Xincheng Wang, Daniel Fischer, Robert Moshammer, and Joachim Ullrich — Max-Planck-Institut für Kernphysik, Heidelberg, Germany

We report on kinematically complete studies of electron capture from He (and Ne) in collisions with slow Heq+ (and Neq+) projectiles using a ’Reaction Microscope’. We succeeded in collecting fully differential data sets for several reaction channels like single and double electron capture, resonant capture and capture accompanied with subsequent auto-ionization. The results are compared with theoretical model calculations. In order to achieve an efficient detection of emitted recoil-ions and electrons we implemented large area position sensitive MCP detectors with central holes for the passage of the projectile beam. This enabled us to measure the recoiling target ion in coincidence with Auger-electrons emitted from the highly excited projectile ion after capture. The experimental setup and first results of ongoing measurements will be presented.

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