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One- and two-electron processes in charge transfer and single ionization in ion-lithium collisions


Goullon,  Johannes
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Goullon, J. (2014). One- and two-electron processes in charge transfer and single ionization in ion-lithium collisions. PhD Thesis, Ruprecht-Karls-Universität, Heidelberg.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-7809-8
In this work the dynamics of one- and two-electron transitions in ion-lithium collisions is investigated. The measurements are performed with a novel experimental technique (MOTReMi) combining a magneto-optically trapped (MOT) Li target with a Reaction Microscope (ReMi) enabling the momentum resolved and coincident detection of the target fragments. This apparatus was implemented in the ion storage ring TSR providing electron-cooled projectile beams with high currents and low momentum spread. Due to the high resolution and by means of optical excitation, for the first time initial state selective fully differential cross sections for ion-impact induced ionization and charge transfer became available. Transitions of 1s, 2s and 2p target electrons were investigated shedding light on the role of the projectile coherence length, electronic correlation in two-electron transitions and target polarization effects, thereby enhancing our understanding of the few-body problem in quantum dynamics.