Double Beta-Decay of 82Se and 130Te
The isotopic compositions of xenon and krypton in the mineral kitkaite, NiTeSe, were measured to determine the amounts of radiogenic 82Kr and 130Xe produced by the double-beta decay of 82Se and 130Te, respectively. From the ratio of radiogenic 82Kr to radiogenic 130Xe in this mineral, it is concluded that the half-life of 130Te is larger than that of 82Se by a factor of 7.3 ± 0.9. If the age of the host rock, 2.00 × 109 y, is taken as an upper limit on the gas-retention age of the mineral, then values of (1.25 ± 0.08) × 1021y and (1.72 ± 0.19) × 1020y are obtained as upper limits on the half-lives of 130Te and 82Se respectively. A more realistic upper limit of T82 1 2 ≤ (1.4 ± 0.2) × 1020y is obtained from these results and those of a recent measurement here indicating T8130 1 2 ≤ 1 × 1021y.
W. Lin et al., "Double Beta-Decay of 82Se and 130Te," Nuclear Physics, Section A, vol. 457, pp. 285-291, Elsevier, Sep 1986.
The definitive version is available at http://dx.doi.org/10.1016/0375-9474(86)90378-7
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