Darmstadt 2008 – scientific programme

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MO: Fachverband Molekülphysik

MO 9: Kalte Moleküle II (gemeinsam mit Q)

MO 9.8: Talk

Tuesday, March 11, 2008, 12:45–13:00, 3G

Trapping and cooling of single molecular ions for time resolved diffraction experiments — •Günther Leschhorn, Steffen Kahra, and Tobias Schaetz — Max-Planck-Institut für Quantenoptik, Garching

The interest in observing structural changes in molecules with a time resolution of a few femtoseconds and below give rise to discussions about modifying the establised target schemes. The TIaMo-project (trapped ions and molecules) aims for a electron or X-ray diffraction experiment using single molecular ions. We report on the progress towards a setup for the preparation of single, cold and well (spacial resolution: 1 µ m) localized molecular ions, that can be continously replaced to achieve suitable statistics in a single target experiment. By combining numerous experimental techniques like Paul-traps, sympathetic cooling, light pressure and separation of molecular ions from a Coulomb-crystal using electric fields, it should be possible to achieve a replacement in the kHz-regime. In the future, this scheme together with electron or X-ray diffraction on a single molecular ion can be used to directly observe fast molecular reaction dynamics. Supported by: MAP, IMPRS-APS, MPG