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MO: Fachverband Molekülphysik

MO 10: Kalte Moleküle 1

MO 10.2: Vortrag

Dienstag, 3. März 2009, 11:00–11:15, VMP 6 HS-G

Photoassociation spectroscopy of the B¹Π -state of LiCs — •Marc Repp^1,2, Johannes Deiglmayr², Anna Grochola², Olivier Dulieu³, Philippe Pellegrini⁴, Robin Coté⁴, Roland Wester², and Matthias Weidemüller^1,2 — ¹Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg — ²Physikalisches Institut, Albert-Ludwigs-Universität Freiburg — ³Laboratoire Aimé Cotton, CNRS, University Paris-Sud XI, Orsay, France — ⁴Department of Physics, University of Connecticut, Storrs, USA

We recently achieved the formation of ultracold LiCs-molecules in the rovibrational ground state X¹Σ⁺,v^″=0,J^″=0 [1] via photoassociation (PA) through the B¹Π potential in double-species magneto-optical trap. In this talk we will present a detailed analysis of the photoassociation step, including the strength of the PA resonances. We observed an enhancement of the PA rates for deeply bound states which might be explained by an increased amplitude of the scattering wave function at the inner turning point of the lowest triplet state a³Σ⁺. This perturbation is possibly introduced into the singlet projection of the wave function by a Feshbach resonance close to zero magnetic field [2].

[1] J. Deiglmayr et al., Phys. Rev. Lett. 101, 133004 (2008)

[2] J. Deiglmayr et al., submitted to New Journal of Physics