Charge-exchange collisions between ultracold fermionic $^{6}\mathrm{Li}$ atoms and $^{40}\mathrm{Ca}^{+}$ ions are observed in the millikelvin temperature range. The reaction product of the charge-exchange collision is identified via mass spectrometry during which the motion of the ions is excited parametrically. The cross sections of the charge-exchange collisions between $^{6}\mathrm{Li}$ atoms in the ground state and $^{40}\mathrm{Ca}^{+}$ ions in the ground and metastable excited states are determined. Investigation of the inelastic collision characteristics in the atom-ion mixture is an important step toward ultracold chemistry based on ultracold atoms and ions.Charge-exchange collisions between ultracold fermionic $^{6}\mathrm{Li}$ atoms and $^{40}\mathrm{Ca}^{+}$ ions are observed in the millikelvin temperature range. The reaction product of the charge-exchange collision is identified via mass spectrometry during which the motion of the ions is excited parametrically. The cross sections of the charge-exchange collisions between $^{6}\mathrm{Li}$ atoms in the ground state and $^{40}\mathrm{Ca}^{+}$ ions in the ground and metastable excited states are determined. Investigation of the inelastic collision characteristics in the atom-ion mixture is an important step toward ultracold chemistry based on ultracold atoms and ions.

arXiv:1403.5091Physical Review AMar 30, 201550 citations

Controling Excited-State Ion-Atom Reaction

Ming Li, Alexander A. Petrov, Svetlana Kotochigova

Bulletin of the American Physical SocietyMay 30, 20180 citations

Charge-exchange collisions between ultracold fermionic

^{6}\mathrm{Li}

atoms and

^{40}\mathrm{Ca}^{+}

ions are observed in the millikelvin temperature range. The reaction product of the charge-exchange collision is identified via mass spectrometry during which the motion of the ions is excited parametrically. The cross sections of the charge-exchange collisions between

^{6}\mathrm{Li}

atoms in the ground state and

^{40}\mathrm{Ca}^{+}

ions in the ground and metastable excited states are determined. Investigation of the inelastic collision characteristics in the atom-ion mixture is an important step toward ultracold chemistry based on ultracold atoms and ions.