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Model for the hyperfine structure of electronically-excited molecules
A. Orbán, R. Vexiau, O. Krieglsteiner +4
A model for determining the hyperfine structure of the excited electronic states of diatomic bialkali heteronuclear molecules is formulated from the atomic hyperfine interactions,…
Towards the production of ultracold ground-state RbCs molecules: Feshbach resonances, weakly bound states, and coupled-channel model
Tetsu Takekoshi, Markus Debatin, Raffael Rameshan +8
We have studied interspecies scattering in an ultracold mixture of Rb and Cs atoms, both in their lowest-energy spin states. The three-body loss signatures of 30 inc…
Molecular spectroscopy for ground-state transfer of ultracold RbCs molecules
Markus Debatin, Tetsu Takekoshi, Raffael Rameshan +7
We perform one- and two-photon high resolution spectroscopy on ultracold samples of RbCs Feshbach molecules with the aim to identify a suitable route for efficient ground-state tra…
Three-body recombination at large scattering lengths in an ultracold atomic gas
Tino Weber, Jens Herbig, Michael Mark +2
We study three-body recombination in an optically trapped ultracold gas of cesium atoms with precise magnetic control of the s-wave scattering length a. At large positive values of…
Cold atom gas at very high densities in an optical surface microtrap
M. Hammes, D. Rychtarik, H. -C. Nägerl +1
An optical microtrap is realized on a dielectric surface by crossing a tightly focused laser beam with an horizontal evanescent-wave atom mirror. The nondissipative trap is loaded…