Ultracold charged atom-dimer collisions: state-selective charge exchange and three-body recombination.
PANDEY, Amrendra; VEXIAU, Romain; MARCASSA, Luís Gustavo; DULIEU, Olivier; BOULOUFA-MAAFA, Nadia.
PANDEY, Amrendra; VEXIAU, Romain; MARCASSA, Luís Gustavo; DULIEU, Olivier; BOULOUFA-MAAFA, Nadia.
Abstract: Based on an accurate determination of the potential energy surfaces of Rb+ 3 correlated to its first asymptotic limit Rb++Rb?(5???)+Rb?(5???), we identify the presence of intersections of a pair of singlet and triplet surfaces over all interparticle distances, leading to Jahn-Teller (JT) couplings. We elaborate scenarios for charge exchange between ultracold charged atom-dimer complex (Rb+Rb+ 2 or Rb++Rb2), predicting a strong selectivity on the preparation of the initial state of the dimer. We also demonstrate that the JT couplings must drive the three-body recombination (TBR) of Rb+, Rb, and Rb at ultracold energies. Using the current analysis, we provide a consistent picture of the TBR experiments performed in ion-atom hybrid Rb samples. We also demonstrate the presence of JT coupling as a general phenomenon in the singly charged homonuclear alkali triatomic systems.
@article={003218738,author = {PANDEY, Amrendra; VEXIAU, Romain; MARCASSA, Luís Gustavo; DULIEU, Olivier; BOULOUFA-MAAFA, Nadia.},title={Ultracold charged atom-dimer collisions: state-selective charge exchange and three-body recombination},journal={Physical Review Research},note={v. 6, n. 4, p. 043010-1-043010-12},year={2024}}