Observation of Cold Collisions between Trapped Ions and Trapped Atoms

Details Observation of Cold Collisions between Trapped Ions and Trapped Atoms Observation of Cold Collisions between Trapped Ions and Trapped Atoms

2008-08-27

arxiv.org/abs/0808.3620v2

Physics

Atomic Physics

4 pages, 4 figures; Revision 1/V2: Revised in response to PRL Referees' comments

Scientific paper

We demonstrate a double-trap system well suited to study cold collisions between trapped ions and trapped atoms. Using Yb$^+$ ions confined in a Paul trap and Yb atoms in a magneto-optical trap, we investigate charge-exchange collisions of several isotopes for collision energies down to 400 neV (5 mK). The measured rate coefficient of $6 \times 10^{-10}$ cm$^{3}$s$^{-1}$, constant over four orders of magnitude in collision energy, is in good agreement with that derived from a semiclassical Langevin model for an atomic polarizability of 143 a.u.

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