Phys. Rev. A
76,
023404
(2007)
[5 pages]
Observation of single collisionally cooled trapped ions in a buffer gas
M. Green et al.
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M. Green1, J. Wodin1, R. DeVoe1, P. Fierlinger1, B. Flatt1, G. Gratta1, F. LePort1, M. Montero Díez1, R. Neilson1, K. O’Sullivan1, A. Pocar1, S. Waldman1,*, D. S. Leonard2, A. Piepke2, C. Hargrove3, D. Sinclair3, V. Strickland3, W. Fairbank, Jr.4, K. Hall4, B. Mong4, M. Moe5, J. Farine6, D. Hallman6, C. Virtue6, E. Baussan7, Y. Martin7, D. Schenker7, J.-L. Vuilleumier7, J.-M. Vuilleumier7, P. Weber7, M. Breidenbach8, R. Conley8, C. Hall8,†, J. Hodgson8, D. Mackay8, A. Odian8, C. Y. Prescott8, P. C. Rowson8, K. Skarpaas8, and K. Wamba8
1Physics Department, Stanford University, Stanford, California 94305, USA 2Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA 3Physics Department, Carleton University, Ottawa, Ontario K1S 5B6, Canada 4Physics Department, Colorado State University, Fort Collins, Colorado 80523, USA 5Physics Department, University of California, Irvine, California 92697, USA 6Physics Department, Laurentian University, Sudbury, Ontario P3E 2C6, Canada 7Institut de Physique, Université de Neuchatel, Neuchatel, Switzerland 8Stanford Linear Accelerator Center, Menlo Park, California 94025 USA
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
*Present address: Caltech, Pasadena, CA 91125. †Present address: University of Maryland, College Park, MD 20742.
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