Dresden 2011 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 36: Poster Session II (Metals; Nanostructures at surfaces; Surface or interface magnetism; Spin-Orbit Interaction at Surfaces; Electron and spin dynamics; Surface dynamics; Methods; Theory and computation of electronic structure)
O 36.114: Poster
Dienstag, 15. März 2011, 18:30–22:00, P4
Molecule-Surface Scattering with Velocity-Controlled Molecular Beams — •Fabian Grätz1, Daniel Engelhart2, Henrik Haak1, Daniel J. Auerbach2, Alec M. Wodtke2, and Gerard Meijer1 — 1Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin — 2Max-Planck-Institut für biophysikalische Chemie, Am Faßberg 11, D-37077 Göttingen
The production of cold molecular beams with a tunable velocity by means of pulsed electric fields, known as Stark deceleration, is now mature and convenient. At the same time, molecular beam experiments that use traditional ways of velocity manipulation have been commonly used to study different aspects of molecule-surface interactions in the regime of high kinetic energy. We present a new generation of molecule-surface scattering machine, which brings the advantages of Stark decelerated molecular beams to the field of surface physics. Using this machine, CO molecules will be scattered at surfaces, quantum-state selective with respect to both impacting and scattered molecules, while providing a tunable velocity in the range of 1000 to 20 m/s with an exceptional translational energy resolution.