Hannover 2016 – scientific programme

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A: Fachverband Atomphysik

A 6: Ultracold Atoms, Ions and Molecules II (with Q)

A 6.7: Talk

Monday, February 29, 2016, 16:00–16:15, e001

Inelastic collisions of strongly confined triplet Rb₂ molecules — •Markus Deiss¹, Björn Drews¹, Krzysztof Jachymski^2,3, Zbigniew Idziaszek², and Johannes Hecker Denschlag¹ — ¹Institut für Quantenmaterie, Universität Ulm, 89069 Ulm, Germany — ²Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland — ³Institut für Theoretische Physik III, Universität Stuttgart, 70550 Stuttgart, Germany

We present experimental studies of inelastic collisions of metastable ultracold triplet molecules in the vibrational ground state. The measurements are performed with nonpolar Rb₂ dimers which are trapped in an array of quasi-1D potentials and prepared in precisely-defined quantum states. Using a simple model we can understand the molecular decay dynamics and extract reaction rate coefficients. We will show results both for nonrotating molecules that are prepared in the energetically absolutely lowest triplet hyperfine level and molecules with two quanta of rotational angular momentum. These results are compared to those obtained for vibrationally highly excited Feshbach molecules.