Hamburg 2009 – scientific programme
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MO: Fachverband Molekülphysik
MO 13: Molekülphysik Poster 1
MO 13.38: Poster
Tuesday, March 3, 2009, 16:30–19:00, VMP 8 Foyer
A Molecular Synchrotron — •P. C. Zieger1, C. E. Heiner1, A. J. A. van Roij2, H. L. Bethlem1,3, S. Y. T. van de Meerakker1, and G. Meijer1 — 1Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany — 2Radboud University, Nijmegen, The Netherlands — 3Laser Centre Vrije Universiteit, Amsterdam, The Netherlands
With the so-called Stark decelerator it has been shown that it is possible to produce a beam of cold neutral polar molecules with a tunable velocity that are well suited for molecular beam scattering studies[1]. Molecular storage rings offer particularly interesting prospects for these kind of scattering experiments. In principle, a storage ring allows the confinement of multiple packets of molecules on a circle that repeatedly interact. A storage ring that consists of two hexapole half-rings that are separated by a small gap has been developed[2]. By appropriately switching the voltages as the molecules pass through the gaps, the molecular packet can be kept together as a compact bunch as it revolves around the ring. The broken symmetry of the ring also allows the injection of multiple packets of molecules. We will present an improved version of a molecular synchrotron that consists of 40 straight hexapoles, that allows the simultaneous confinement of 40 molecular packets. These packets can be made to interact repeatedly at well defined times and positions as they revolve the ring. The synchrotron can store these either collinear or counter propagating molecules for times up to seconds, significantly increasing the sensitivity of molecular collision experiments. [1] J. J. Gilijamse et al.,Science, 313, 5793, 1617-1620 (2006), [2] Heiner et al.,Nature Physics, 3, 115-118 (2007).