Lifetime measurement of the metastable3d<mml:mspace width="0.2em"/>D5∕2<mml:none/><mml:mprescripts/><mml:none/>2state in theCa<mml:none/>+<mml:mprescripts/><mml:none/>40ion using the shelving technique on a few-ion string

2003/11/20 by Peter Staanum, Inger S. Jensen, Randi G. Martinussen +3 · 1 citation
Physics and Astronomy · #Advanced Frequency and Time Standards #Atomic and Molecular Physics #Cold Atom Physics and Bose-Einstein Condensates #physics.atom-ph

paper · pdf · doi:10.1103/physreva.69.032503

published as Phys. Rev. A 69, 032503 (2004) · 10 pages, 7 figures. Submitted for publication

arxiv created 2003/11/20 · openalex publication_date 2004/03/16 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We present a measurement of the lifetime of the metastable 3d\phantom\rule0.2em0ex²D_5∕2 state in the ⁴⁰Ca⁺ ion, using the so-called shelving technique on a string of five Doppler laser-cooled ions in a linear Paul trap. A detailed account of the data analysis is given, and systematic effects due to unwanted excitation processes and collisions with background gas atoms are discussed and estimated. From a total of 6805 shelving events, we obtain a lifetime \ensuremathτ=1149\ifmmode±\else\textpm\fi14(stat.)\ifmmode±\else\textpm\fi4(sys.)ms, a result which is in agreement with the most recent measurements.

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• Experimental and theoretical study of the3d<mml:mspace width="0.3em"/>D<mml:mprescripts/><mml:none/>2–level lifetimes ofCa<mml:none/>+<mml:mprescripts/><mml:none/>40

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