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Phys. Rev. A 76, 023404 (2007) [5 pages]

Observation of single collisionally cooled trapped ions in a buffer gas

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M. Green et al.
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Received 15 February 2007; published 9 August 2007

Individual Ba ions are trapped in a gas-filled linear ion trap and observed with a high signal-to-noise ratio by resonance fluorescence. Single-ion storage times of ∼5 min (∼1 min) are achieved using He (Ar) as a buffer gas at pressures in the range 8×10−5–4×10−3 torr. Trap dynamics in buffer gases are experimentally studied in the simple case of single ions. In particular, the cooling effects of light gases such as He and Ar and the destabilizing properties of heavier gases such as Xe are studied. A simple model is offered to explain the observed phenomenology.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.76.023404
DOI:
10.1103/PhysRevA.76.023404
PACS:
32.80.Pj, 39.25.+k, 52.20.Hv