Published in
EXA 2014, p. 113-119
DOI: 10.1007/978-3-319-45018-6_17
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Lifetime measurement of the 5d2 D 5/2 state in Ba+
Journal article published in 2015 by
Amita Mohanty,
Elwin A. Dijck 
,
Mayerlin Nuñez Portela,
Nivedya Valappol,
Andrew T. Grier,
Thomas Meijknecht,
Lorenz Willmann,
Klaus Jungmann
,
Mayerlin Nuñez Portela,
Nivedya Valappol,
Andrew T. Grier,
Thomas Meijknecht,
Lorenz Willmann,
Klaus Jungmann
This paper is made freely available by the publisher.
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Abstract
The lifetime of the metastable 5d2D5/2 state has been measured for a single trapped Ba+ ion in a Paul trap in Ultra High Vacuum (UHV) in the 10−10 mbar pressure range. A total of 5046 individual periods when the ion was shelved in this state have been recorded. A preliminary value τD5/2=26.4(1.7) $τ _{D_{5/2}} = 26.4(1.7)$ s is obtained through extrapolation to zero residual gas pressure.