Hannover 2013 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 5: Cold Molecules I
MO 5.6: Vortrag
Montag, 18. März 2013, 15:15–15:30, F 107
Towards Cold Chemistry with Magnetically Decelerated Hydrogen Atoms — •Katrin Dulitz1, Michael Motsch2, Nicolas Vanhaecke3,4, and Timothy P. Softley1 — 1Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK — 2Laboratorium für Physikalische Chemie, ETH Zürich, Wolfgang-Pauli-Straße 10, 8093 Zürich, Switzerland — 3Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany — 4Laboratoire Aimé Cotton, CNRS, Université Paris-Sud, ENS Cachan, 91405 Orsay, France
Zeeman deceleration is an experimental technique which makes it possible to manipulate the velocity of open-shell atoms and molecules in a supersonic beam [1, 2]. The method is based on the Zeeman interaction between paramagnetic particles and time-dependent, inhomogeneous magnetic fields generated by pulsing high currents through an array of solenoid coils.
Here, we present progress on the deceleration of hydrogen atoms in a 12-stage Zeeman decelerator that is being set up in Oxford. Results from previous Zeeman deceleration experiments [3] strongly suggest that nonadiabatic transitions, induced by a rapid reversal of the magnetic field direction, can lead to a significant loss of decelerated particles. Experiments to further quantify these effects are currently underway.
N. Vanhaecke et al., Phys. Rev. A 75, 031402 (2007).
[2] E. Narevicius et al., Phys. Rev. A 77, 051401 (2008).
[3] S.D. Hogan et al., Phys. Rev. A 76, 023412 (2007).