SAMOP 2021 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 8: Collisions, scattering, and correlation phenomena
A 8.2: Poster
Dienstag, 21. September 2021, 16:30–18:30, P
Atom-molecule and molecule-molecule collisions in NaK quantum gases — •Philipp Gersema1, Mara Meyer zum Alten Borgloh1, Kai Konrad Voges1, Torsten Hartmann1, Leon Karpa1, Alessandro Zenesini2, and Silke Ospelkaus1 — 1Leibniz Universität Hannover — 2Universita di Trento
Ultracold polar ground-state molecules provide an excellent platform for the study of atom-molecule and molecule-molecule collisions in the quantum regime. For endoergic collision channels, it has been suggested that long-lived collisional complexes form which can then be removed from the trap by additional mechanisms such as light-excitation.
Here, we investigate atom-molecule and molecule-molecule collisions in quantum gases of 23Na39K. We probe photo-induced loss of four-body complexes forming in molecule-molecule collisions in chopped optical dipole traps and find the lower limit of the complex lifetime to be much larger than the lifetime derived from RRKM theory.
We also present studies of atom-molecule collisions including loss between molecules and 39K atoms in several spin states.