Elsevier

Nuclear Physics A

Volume 408, Issue 1, 24 October 1983, Pages 87-98
Nuclear Physics A

The q-value of 157Tb

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Abstract

Using mass-separated and chemically purified samples, the Q-value of 157Tb has been remeasured as 62.9 ± 0.7 keV by determining electron capture ratios. The transition probability to the excited state was found to be (1.1 ± 0.1) × 10−3, with a transition energy of 8.4 ± 0.7 keV for this branch. From the proximity to the 2s binding energy, experiments on the internal bremsstrahlung electron capture seem feasible. The half-life of 157Tb was remeasured as 99 ± 10 y.

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Visitor from Zentralinstitut für Kernforschung, Rossendorf bei Dresden, GDR.

††

Present address: Lawrence Berkeley Laboratory, Berkeley, Calif., USA.

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