Phys. Rev. Lett. 57, 70–73 (1986)Sympathetic cooling of trapped ions: A laser-cooled two-species nonneutral ion plasmaReceived 31 March 1986; published in the issue dated 7 July 1986 Sympathetic cooling of trapped ions has been demonstrated in an experiment where 198Hg+ ions were confined in a Penning ion trap with laser-cooled 9Be+ ions. 198Hg+ temperatures below 1 K were achieved. Ion plasma sizes, shapes, and rotation frequencies were measured. Dramatic changes in the 9Be+ plasma were observed when the 198Hg+ ions were introduced into the trap. These observations are consistent with the prediction of centrifugal separation for ions of different charge-to-mass ratios. © 1986 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.57.70
DOI:
10.1103/PhysRevLett.57.70
PACS:
32.80.Pj, 52.25.Wz
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