Stuttgart 2012 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 50: Interaction of matter with ions

A 50.3: Vortrag

Freitag, 16. März 2012, 14:30–14:45, V57.05

Inner and outer shell single ionization of laser-cooled lithium by ion impact — •Aaron LaForge¹, Renate Hubele¹, Xincheng Wang¹, Johannes Goullon¹, Michael Schulz^2,3, and Daniel Fischer¹ — ¹Max Planck Institut fuer Kernphysik, Heidelberg, DE — ²Misouri University of Science & Technology, Rolla, USA — ³Institut fuer Kernphysik, Goethe Universitaet, Frankfurt, DE

We have performed a kinematically complete experiment of single ionization of optically trapped and cooled lithium by 1.5 MeV/amu O⁸⁺. In comparison to prior work, the overall experimental resolution was drastically improved. As a result, it is possible to resolve ionization from the different energey shells (n=1 & n=2). Furthermore, from the higher order differential data, one can see clear difference between the emitted electron energy, momentum transfer, and other quantities depending on the initial state. Double and fully differential cross sections will be presented. This represents the first direct and simultaneous comparison between such data for inner and outer shell ionization.