Stuttgart 2012 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MO: Fachverband Molekülphysik
MO 14: Poster 2: Biomolecules, Electronic Spectroscopy, Experimental Techniques, Quantum Chemistry, Various Topics
MO 14.11: Poster
Mittwoch, 14. März 2012, 16:30–19:00, Poster.IV
Absorption spectroscopy and deperturbation with Sr2 — •Alexander Stein, Horst Knöckel, and Eberhard Tiemann — Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover
Ultracold Sr2 molecules might offer good opportunities for new and exciting experiments like the detection of the time variation of the electron-proton mass ratio (T. Zelevinsky and S. Kotochigova and J. Ye, Phys. Rev. Lett. 100, 043201 (2008)). For the production of ultracold molecules in deeply bound rovibrational levels of the ground state, a precise knowledge of intermediate levels of suitable excited electronic states is necessary. As shown in our recent publication on this molecule (A. Stein and H. Knöckel and E. Tiemann, Eur. Phys. J. D 64, 227 (2011)), the excited states of this molecule are strongly perturbed and thus a high amount of data is necessary for a reasonable description of the coupled systems.
We now report on the usage of a highly efficient method for obtaining precise level energies from a broad band absorption spectrum recorded by a Fourier-transform spectrometer. The method is capable to assign lines in such dense spectra applying the precise knowledge of the electronic ground state. Results of a deperturbation analysis on the coupled system 21Σu+–11Πu will be presented.