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

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    1901.09061v1.pdf
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    Genre
    Pre-print
    Date
    2019-06-14
    Author
    Li, M
    Mills, M
    Puri, P
    Petrov, A
    Hudson, ER
    Kotochigova, S
    Subject
    physics.chem-ph
    physics.chem-ph
    Permanent link to this record
    http://hdl.handle.net/20.500.12613/4546
    
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    DOI
    10.1103/PhysRevA.99.062706
    Abstract
    © 2019 American Physical Society. An important physical process unique to neutral-ion systems is the charge-transfer reaction. Here, we present measurements of and models for charge-transfer processes between cotrapped ultracold Ca atoms and Yb ions under well-controlled conditions. The theoretical analysis suggests the existence of three reaction mechanisms when lasers from a magneto-optical trap and an additional catalyst laser are present. We show that the near-degeneracy of the excited Ca(P11)+Yb+(S2) and Ca+(S2)+Yb(D23) asymptotic limits leads to large charge-transfer rate coefficients that can be controlled by changing the frequency of the catalyst laser and the ion temperature. Our model agrees with experimental rate-coefficient measurements between 50 mK and 1 K, with and without the catalyst laser, using just a single free parameter.
    Citation to related work
    American Physical Society (APS)
    Has part
    Physical Review A
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    ae974a485f413a2113503eed53cd6c53
    http://dx.doi.org/10.34944/dspace/4528
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