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A: Atomphysik

A 16: Wechselwirkung mit starken Laserpulsen I

A 16.3: Talk

Thursday, March 16, 2006, 11:10–11:25, H6

Particle production from laser-driven positronium — •Carsten Müller, Karen Z. Hatsagortsyan, and Christoph H. Keitel — Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg

We calculate muon pair creation in electron-positron collisions, where the electron and positron originate from a positronium atom that is submitted to a strong laser field. It is shown that the threshold intensity of this process is almost reached by the most powerful present laser systems. The total production rate, however, turns out to be very small due to a destructive interference effect.