Frankfurt 2006 – wissenschaftliches Programm
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MO: Molekülphysik
MO 57: Poster: Cold Molecules
MO 57.9: Poster
Donnerstag, 16. März 2006, 16:30–18:30, Labsaal
High Resolution Spectroscopy and Potential Determination of the X1Σ and the a3Σ+ state of NaCs — •M. Hobein1, A. Gerdes1, O. Docenko2, M. Tamanis2, J. Zaharova2, R. Ferber2, A. Pashov3, H. Knöckel1, and E. Tiemann1 — 1Institut für Quantenoptik, Universität Hannover, Welfengarten 1, 30167 Hannover — 2Department of Physics and Institute of Atomic Physics and Spectroscopy, University of Latvia, Rainis Boulevard 19, LV 1586 Riga, Latvia — 3Department of Physics, Sofia University, 5 James Bourchier blvd, 1164 Sofia, Bulgaria
With the technique of Fourier-Transform-Spectroscopy of laser-induced fluorescence it is possible to observe fluorescence series due to singlet and triplet transitions simultaneously as long as the excitation is to a mixed singlet-triplet level. The data gained in such type of spectroscopy have been used to derive precise potential energy curves for the ground X1Σ state of NaCs [1] and for the a3Σ+ state as well. The PECs allow to derive also the long range scattering properties for cold collisions of Na + Cs, like scattering length and Feshbach resonances.
[1] O. Docenko et al., Eur. Phys. Journal D, 31, 205, 2004.