Excitation-assisted nonadiabatic charge-transfer reaction in a mixed atom-ion system

Abstract

An important physical process unique to neutral-ion systems is the charge-transfer (CT) reaction. Here, we present measurements of and models for CT processes between co-trapped ultracold Ca atoms and Yb ions under well-controlled conditions. The theoretical analysis reveals the existence of three reaction mechanisms when lasers from a magneto-optical trap (MOT) and an additional catalyst laser are present. Besides the direct CT involving existent excited Ca population in the MOT, the second pathway is controlled by MOT-induced CT, whereas the third one mostly involves the additional red-detuned laser.

9 pages, 4 figures

References in corpus (8)

• Quantum theory of ultracold atom-ion collisions
• Cold heteronuclear atom-ion collisions
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Cited by in corpus (4)

• Ultracold ion-atom experiments: cooling, chemistry, and quantum effects
• Photon-mediated charge-exchange reactions between 39K atoms and 40Ca+ ions in a hybrid trap
• Ion loss events in a cold Rb-Ca${}^{+}$ hybrid trap: photodissociation, black-body radiation and non-radiative charge exchange
• Fermi polaron in atom-ion hybrid systems