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Lifetime measurement of the metastable 3d 2D5/2 state in the 40Ca+ ion using the shelving technique on a few-ion string

Peter Staanum·Inger S. Jensen·Randi G. Martinussen·Dirk Voigt·Michael Drewsen
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Abstract

We present a measurement of the lifetime of the metastable 3d 2D5/2 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 tau=1149+/-14(stat.)+/-4(sys.)ms, a result which is in agreement with the most recent measurements.

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Peter Staanum, Inger S. Jensen, Randi G. Martinussen, Dirk Voigt, Michael Drewsen. 2003-11-20. Lifetime measurement of the metastable 3d 2D5/2 state in the 40Ca+ ion using the shelving technique on a few-ion string. https://doi.org/10.1103/physreva.69.032503

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