Dresden 2011 – scientific programme

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MO: Fachverband Molekülphysik

MO 6: Poster: Cold Molecules

MO 6.7: Poster

Monday, March 14, 2011, 16:00–18:00, P1

Photodetachment and Reaction dynamics with cold trapped molecular ions — •Thorsten Best^1,2, Jonathan Brox¹, Stephanie Eisenbach¹, Sébastien Jézouin^1,3, Rico Otto¹, Sebastian Trippel^1,4, Alexander von Zastrow¹, and Roland Wester^1,2 — ¹Physikalisches Institut, Albert-Ludwigs-Universität, Freiburg — ²Institut für Ionen- und angewandte Physik, Leopold-Franzens-Universität Innsbruck — ³École Normale Supérieure, Paris — ⁴Center for Free Electron Laser Science, DESY, Hamburg

Trapping of molecular ions under well-controlled environmental conditions has become an important tool of molecular physics, with widespread fields of application.

We present recent experiments with molecular ions in our 22pole radio-frequency ion trap. Buffer gas cooling allows to prepare ensembles where only few internal states are populated. These systems allow to study inelastic ion-molecule collisions (e.g. reactions or clustering) in a well-controlled setting. For anions, the internal state distribution can be mapped out using photodetachment at threshold.

We also report on collision experiments with highly energetic atomic ions and charged water clusters held in a Paul trap at the ZERNIKE-LEIF facility.