Berlin 2014 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 22: Cold Molecules 3
MO 22.4: Vortrag
Freitag, 21. März 2014, 11:15–11:30, BEBEL SR144
Non-adiabatic alignment of molecules dissolved in small helium clusters — G. Galinis1, L.G. Mendoza Luna1, M. Watkins1, •K. von Haeften1, R. Minns2, A.M. Ellis3, R. Chapman4, C. Cacho4, E. Turcu4, E. Springate4, M. Mladenovich5, M. Lewerenz5, L. Kazak6, R. Irsig6, S. Skruszewicz6, S. Göde6, J. Tiggesbäumker6, K.H. Meiwes-Broer6, A. Rouzee7, and R. Zillich8 — 1Dep. of Physics and Astronomy, University of Leicester, UK — 2Dep. of Chemistry, University of Southampton, UK — 3Dep. of Chemistry, University of Leicester, UK — 4Central Laser Facility, Rutherford Appleton Lab, UK — 5Laboratoire Modelisation et Simulation, University of Paris-Est, Marne-la-Valee, France — 6Institute for Physics, University of Rostock, Germany — 7Max Born Institute, Berlin, Germany — 8Institute for Theoretical Physics, University Linz, Austria
The rotational dynamics of C2H2 molecules in small helium clusters was investigated using laser induced alignment in a pump-probe experiment. The Fourier-transform of the time-trace shows sharp, cluster-specific spectral features with coherence times limited only by our experimental resolution, contrary to the findings for molecules in helium droplets 1. The generation of highly charged atomic and molecular ions, the formation and propagation of rotational and vibrational wavepackets, the role of cluster size and the relevance of this work in the study of incipient superfluid effects in small helium clusters will be discussed.
1 D. Pentlehner et al., Phys. Rev. Lett. 110, 093002 (2013)