Hannover 2010 – scientific programme
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MO: Fachverband Molekülphysik
MO 6: Cold Molecules I
MO 6.2: Talk
Tuesday, March 9, 2010, 14:30–14:45, F 142
Velocity-selected molecular pulses produced by an electric guide — •Christian Sommer1, Michael Motsch1, Sotir Chervenkov1, Laurens D. van Buuren1, Martin Zeppenfeld1, Pepijn W.H. Pinkse1,2, and Gerhard Rempe1 — 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, D-85748 Garching, Germany — 2Mesa+ Institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
By using the technique of electrostatic velocity filtering [1] we demonstrate the production of velocity selected pulses of slow molecules from a continuous beam with a tunable center velocity. The pulses are generated by switching electric fields on adjacent segments of an electric quadrupole guide synchronously with the propagation of the molecules. We generate pulses of deuterated ammonia (ND3) containing up to 106 molecules with center velocities between 20 m/s and 100 m/s and a relative spread of (7 ± 1) %.
[1] T. Junglen et al., Eur. Phys. J. D 31, 365 (2004)