2007/05/21 by C. D'Errico, M. Zaccanti, M. Fattori +4 · 1 citation
Physics and Astronomy · #physics.atom-ph
paper · pdf · doi:10.1088/1367-2630/9/7/223
7 pages, 6 figures
arxiv created 2007/05/21 · arxiv updated 2009/12/01
We discover several magnetic Feshbach resonances in collisions of ultracold K(39) atoms, by studying atom losses and molecule formation. Accurate determination of the magnetic-field resonance locations allows us to optimize a quantum collision model for potassium isotopes. We employ the model to predict the magnetic-field dependence of scattering lengths and of near-threshold molecular levels. Our findings will be useful to plan future experiments on ultracold potassium atoms and molecules.