Hamburg 2009 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 10: Kalte Moleküle 1
MO 10.3: Vortrag
Dienstag, 3. März 2009, 11:15–11:30, VMP 6 HS-G
Predissociation lifetimes of LiCs states — •Anna Grochola1, Johannes Deiglmayr1,2, Olivier Dulieu2, Roland Wester1, and Matthias Weidemüller3 — 1Physikalisches Institut, Albert-Ludwigs-Universität Freiburg — 2Laboratoire Aimé Cotton, CNRS, University Paris-Sud XI, Orsay, France — 3Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg
Since many years there is a big interest in production of ultracold diatomic polar molecules, showing a great need for the knowledge about properties of alkali metal dimers. One of the important processes, which may influence the formation and further investigation of molecules, is predissociation of excited energy levels. One example is the LiCs molecule [1], interesting due to its strong dipole moment.
Predissociation effects in the LiCs molecule are investigated using the Fourier Grid Hamiltonian (FGH) method [2] with an optical potential [3]. We concentrate on five LiCs states dissociating to the two lowest lying asymptotes, namely A1Σ+, a3Σ+, c3Σ+, b3Π and B1Π. A possible predissociation of the b3Π levels is found, showing a feature characteristic for all alkali metal dimers containing a lithium atom. The calculated widths are compared with experimental results.
[1] J. Deiglmayr, A. Grochola, M. Repp, K. Mörtlbauer, C. Glück, J. Lange, O. Dulieu, R. Wester and M. Weidemüller, Phys. Rev. Lett 101, 133004 (2008)
[2] O. Dulieu and P.S. Julienne, J. Chem. Phys. 103, 60 (1995)
[3] V. Kokoouline, O. Dulieu, R. Kosloff and F. Masnou-Seeuws, Phys. Rev. A 62, 032716 (2000)