Darmstadt 2008 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 24: Kalte Moleküle

MO 24.7: Poster

Donnerstag, 13. März 2008, 16:30–19:00, Poster C1

Conveyor belt for single molecular ions starts moving — •Steffen Kahra, Günther Leschhorn, and Tobias Schaetz — Max-Planck-Institut für Quantenoptik, Garching

Recent and ongoing endeavours for growingly precise measurements of time dependent structural properties of molecules have raised interest in better adapted target preparation methods. This can be understood as it might be crucial to extend existing methods to the few femtosecond or attosecond time scale. The experimental scheme we present aims for a fully controllable emitter of molecular ions. By exploiting the collected advantages of a linear Paul trap, sympathetic cooling schemes, light pressure separation of different ion species, field free alignment and a tunable reloading mechanism we might be able to position external cold and aligned molecular ions to a precision of about one micrometer at a repetition rate of up to 10 kHz inside a linear Paul trap. These targets seem to be suited for ultrafast electron diffraction and/or cold chemistry experiments. We will discuss the ability to incorporate those methods and can possibly comment on first results. The project is part of the excellence initiative MAP, financial support by MPG and IMPRS-APS is acknowledged.