Measurement of charge-exchange between Na and Ca+ in a hybrid trap
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Authors
Kwolek, J.M.
Goodman, D.S.
Slayton, B.
Blümel, R.
Wells, J.E.
Narducci, F.A.
Smith, W.W.
Subjects
Advisors
Date of Issue
2018-12
Date
2018-12
Publisher
ArXiv
Language
en_US
Abstract
We present measurements of the charge-exchange reaction rate between neutral sodium (Na) and ionized calcium (Ca+) in a hybrid atom-ion trap, which is comprised of a Na magneto-optical trap concentric with a linear Paul trap. Once the Na and Ca+ are co-trapped, the reaction rate is measured by continuously quenching the reaction product Na+ from the ion trap, and then destructively measuring the decay of the remaining ion population. The reactants’ electronic state and temperature are experimentally controlled, allowing us to determine the four individual reaction- rates between Na[S or P] and Ca+[S or D] at different collision energies. With the exception of the largest reaction-rate channel (Na[S] + Ca+[D]), our rates agree with classical Langevin rate limit. We have also found evidence of reactant collision-energy thresholds associated with two of the four entrance-channels.
Type
Preprint
Description
The article of record as published may be found at https://doi.org/10.1103/PhysRevA.99.052703
Series/Report No
Department
Applied Physics
Organization
Naval Postgraduate School
Identifiers
NPS Report Number
Sponsors
NSF Grant No. PHY-1307874
Funder
NSF Grant No. PHY-1307874
Format
10 p.
Citation
J. M. Kwolek, D. S. Goodman, B. Slayton, R. Blümel, J. E. Wells, F. A. Narducci, and W. W. Smith. Phys. Rev. A 99, 052703 – Published 24 May 2019
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.