Rostock 2019 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 10: Posters 1: Cold Molecules, High Resolution Spectroscopy, and Theory
MO 10.12: Poster
Dienstag, 12. März 2019, 16:30–18:30, S Foyer LLM
Analysis of the coupled (2) 2 Σ + and (1) 2 Π of LiSr — •Erik Schwanke, Julia Gerschmann, Horst Knöckel, Silke Ospelkaus, and Eberhard Tiemann — QUEST und Inst. f. Quantenopik, Leibniz Universität Hannover
We present a description of several vibrational states of the (1) 2 Π state of LiSr. Although the (1) 2 Π state is not directly visible in our recorded infrared spectra due to a weak transition dipole moment to the X(1) 2 Σ + state, we could use observed perturbations in the (2) 2 Σ + state to model the coupling between the spectroscopically observed (2) 2 Σ + state and the (1) 2 Π state.
The coupling model leads to a description of the rotational ladders of the coupled v′=0 and v′=1 states of (2) 2 Σ + and several vibrational states of both (1) 2 Π1/2 and (1) 2 Π3/2, thus giving local rotational and vibrational constants, as well as the spin-orbit coupling constant for the (1) 2 Π states. Relative overlap integrals for the involved vibrational states of (1) 2 Π and (2) 2 Σ are derived. Furthermore, the perturbation reveals the correct assignment of the F1 and F2 levels in the (2) 2 Σ + – (1) 2 Σ + system.
We will report on the status of the investigations.