Dresden 2011 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 16: Cold Molecules II

MO 16.4: Vortrag

Mittwoch, 16. März 2011, 15:15–15:30, BAR Schön

Multistage Zeeman Deceleration of Metastable Neon — •Michael Motsch, Alex W. Wiederkehr, Stephen D. Hogan, and Frédéric Merkt — Laboratorium für Physikalische Chemie, ETH Zürich, CH-8093, Switzerland

Multistage Zeeman deceleration exploits the interaction between paramagnetic atoms or molecules and pulsed magnetic fields to slow a supersonic beam of these particles in a phase-stable manner. We start by exciting Ne atoms to the metastable ³P₂ state with a DC discharge in the expansion region behind a pulsed gas nozzle. Using 91 deceleration solenoids, we slow Ne^* atoms to velocities as low as 120 m/s, thereby removing up to 95 % of the initial kinetic energy. We characterize the cold sample of Ne^* atoms with a time-of-flight technique, investigate the efficiency of the deceleration process, and discuss the possibility to extend the technique to other species.