Stuttgart 2012 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 14: Poster 2: Biomolecules, Electronic Spectroscopy, Experimental Techniques, Quantum Chemistry, Various Topics
MO 14.13: Poster
Mittwoch, 14. März 2012, 16:30–19:00, Poster.IV
The B1Π and D1Π states in LiRb — Alexander Stein2, Milena Ivanova1, •Asen Pashov1, Horst Knoeckel2, and Eberhard Tiemann2 — 1Sofia University St. Kliment Ohridski, Faculty of Physics, 5 J. Bourchier blvd., 1164 Sofia, Bulgaria — 2Institut fuer Quantenoptik, Leibniz Universitaet Hannover, Welfengarten 1, D-30167 Hannover, Germany
The LiRb molecule has been studied at high resolution by Fourier-transform spectroscopy of laser induced fluorescence. In this contribution we present the analysis on the excited states B1Π and D1Π. The experimental data came from the directly laser induced fluorescence (LIF) spectra, but also from the analysis of the collisionally induced rotation relaxation of the LIF lines. We present the current status of the analysis of the energy levels positions along with a theoretical model for their description.
The D1Π state was observed for the first time during this study. Although less numerous compared to the observations of the B state, the collected experimental data allow for determing a potential energy curve. The influence of possible perturbations will be discussed for their origin.