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Q: Quantenoptik und Photonik
Q 27: Fallen und Kühlung
Q 27.6: Talk
Tuesday, March 23, 2004, 17:45–18:00, HS 224
Cold heteronuclear alkali dimers (LiCs, NaCs) attached to helium nanodroplets — •M. Mudrich1, O. Bünermann2, F. Stienkemeier2, and M. Weidemüller1 — 1Physikalisches Institut, Universität Freiburg, 79104 Freiburg — 2Fakultät für Physik, Universität Bielefeld, Universitätsstr. 25, 33615 Bielefeld
Cold heteronuclear alkali dimers (LiCs and NaCs) are formed in a beam of helium nanodroplets. Excitation spectra in the frequency range of a tunable Ti:Sa-laser are recorded using mass-selective photoionization, laser-induced fluorescence and laser-induced beam depletion as detection methods. The observed vibrational progressions are identified in terms of transitions within the triplet manifold. Analysis of the spectra yields constraints to ab initio potential curves from literature. Laser-induced desorption of the heteronuclear dimers is observed which opens perspectives to create a beam of free, cold heteronuclear molecules for precision spectroscopy or to provide a source for deceleration and trapping of polar molecules.