We report a measurement of the lifetime of the metastable 5d3/226d3/2, J=0 autoionizing state of barium. We have determined the lifetime to be 190(10) ns.
L. D. Van Woerkom et al., "Measurement of the Lifetime of the Metastable 5d3/226d3/2, J=0 Autoionizing State of Barium," Physical Review A, vol. 34, no. 4, pp. 3457-3458, Oct 1986.
The definitive version is available at https://doi.org/10.1103/PhysRevA.34.3457
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