Düsseldorf 2007 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 26: Poster II -Attosecond physics
A 26.2: Poster
Donnerstag, 22. März 2007, 16:30–18:30, Poster B
Ground state correlation and dynamical processes in fast ion-helium-collisions — •Markus Schöffler1, Jasmin Titze1, Lothar Schmidt1, Colm Whelan2, Alexander Godunov2, James Walters3, Ottmar Jagutzki1, Horst Schmidt-Böcking1, and Reinhard Dörner1 — 1Johann Wolfgang Goethe-Universität, Frankfurt, Germany — 2Old Dominion University, Norfolk, USA — 3The Queens University of Belfast, Belfast, UK
Correlated many-particle dynamics in Coulombic systems, which is one of the unsolved fundamental problems in AMO-physics, can now be approached experimentally with so far unprecedented completeness and precision. The recent development of the COLTRIMS technique (COLd Target Recoil Ion Momentum Spectroscopy) provides a coincident multi-fragment imaging technique for quasi snapshots of the correlated dynamics between electrons and nuclei. Recent transfer ionization studies of fast ion-He collisions will be presented and the direct observation of bound correlated electron pairs will be discussed. We could distinguish between different ionization mechanisms and reveal the tiny non-s^2 contributions from helium groundstate.