Feshbach resonances in Na23+K39 mixtures and refined molecular potentials for the NaK molecule
| Autor: | M. W. Gempel, Eberhard Tiemann, Silke Ospelkaus, Kai K. Voges, Philipp Gersema, Torsten Hartmann, Alessandro Zenesini, Torben A. Schulze |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Physical Review A. 99 |
| ISSN: | 2469-9934 2469-9926 |
| DOI: | 10.1103/physreva.99.032711 |
| Popis: | We present a detailed study of interspecies Feshbach resonances of the bosonic $^{23}\mathrm{Na}+^{39}\mathrm{K}$ mixture for magnetic fields up to $750\phantom{\rule{0.16em}{0ex}}\mathrm{G}$ in various collision channels. A total of 14 Feshbach resonances are reported, as well as four zero crossings of the scattering length and three inelastic two-body loss features. We use the observed magnetic-field locations of the resonant features together with the known data on $^{23}\mathrm{Na}+^{40}\mathrm{K}$ to refine the singlet and triplet ground-state potentials of NaK and achieve a consistent description of Feshbach resonances for both the Bose-Bose mixture of $^{23}\mathrm{Na}+^{39}\mathrm{K}$ and the Bose-Fermi mixture of $^{23}\mathrm{Na}+^{40}\mathrm{K}$. We also discuss the influence of the interplay between inelastic two-body and three-body processes on the observation of a Feshbach resonance. |
| Databáze: | OpenAIRE |
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