Heteroisotopic Feshbach resonances in collisions of cold Ca and Ca+

[摘要] Synopsis We investigate ultracold collisions of heteroisotopic pairs of Ca with Ca+ mediated by an external magnetic field. Based on the nuclear spin of Ca, namely I = 7=2 for43Ca and I = 0 for other isotopes, we identify different scattering dynamics and characterize magnetic Feshbach resonances in43Ca+43Ca+ and43Ca+(40;42)Ca+collisions. Our results suggest that interisotopic Feshbach resonances could be used to control charge-exchange in ultracold atom-ion mixtures of Ca and its ion.

[发布机构] NASA Ames Research Center, Moffett Field; CA; 94035, United States^1;Department of Physics, University of Connecticut, CT; 06268, United States^2

[关键词] Charge exchanges;External magnetic field;Feshbach resonances;Magnetic Feshbach resonances;Nuclear spins;Ultracold atoms;Ultracold collisions