Hamburg 2009 – scientific programme
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MO: Fachverband Molekülphysik
MO 13: Molekülphysik Poster 1
MO 13.41: Poster
Tuesday, March 3, 2009, 16:30–19:00, VMP 8 Foyer
Stark effect of the system B1Π - X1Σ + in NaK — •Andreas Gerdes, Horst Knöckel, and Eberhard Tiemann — Institut für Quantenoptik, Gottfried Wilhelm Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover
Ultracold dipolar molecular gases have gained great interest in recent years. We studied NaK by Fourier-transform spectroscopy in a heatpipe setup [1] and prepared in our new molecular beam apparatus by two lasers with a coherent Λ scheme for population transfer selected rovibrational levels of the molecular ground state for investigating the Stark effect of the heteronuclear molecule NaK. Optimization of the transfer schemes was necessary to ensure good S/N ratio. For a description of the Stark splitting not only the molecular Stark effect of the absolute ground state X1Σ + of the molecule, but also that of the excited state B1Π has to be taken into account. The progress of our investigation in this direction will be shown. A comparison with theoretical predictions of the dependence of the electric dipole moment function on the vibrational quantum number [2] should become possible.
[1] A. Gerdes et al., Eur. Phys. J. D 49 67 (2008)
[2] M. Aymar and O. Dulieu, J. Chem. Phys. 122 204302 (2005)