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Mainz 2017 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 9: Posters 1: Dichroism, VUV and Xray, Clusters, and Cold Molecules

MO 9.19: Poster

Dienstag, 7. März 2017, 17:00–19:00, P OG1

Sympathetic cooling of anions in a hybrid atom-ion trap — •Tobias Heldt1, Henry Lopez1, Bastian Höltkemeier1, Jonas Tauch1, Eric Endres2, Roland Wester2, and Matthias Weidemüller11Physikalisches Institut Heidelberg, INF 226, 69120 Heidelberg — 2Institut für Ionenphysik und Angewandte Physik, Technikerstraße 25/3, 6020 Innsbruck

In our experimental setup OH ions are confined in an octupole radio-frequency trap, where they can be superimposed by laser-cooled rubidium atoms in a dark spontaneous-force optical trap. By localising the atom cloud to the centre of the trap sympathetic cooling of the anions can be achieved even for atom-to-ion mass ratios bigger than unity. The differences between our two experimental approaches of probing the ion distribution, namely photodetachment tomography and time-of-flight analysis, will be discussed in particular.

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