Alpha-decay half-life of 151Tb
1969; Elsevier BV; Volume: 133; Issue: 1 Linguagem: Inglês
10.1016/0375-9474(69)90461-8
ISSN1873-1554
Autores Tópico(s)Radiopharmaceutical Chemistry and Applications
ResumoAbstract The decay of 151 Tb was studied to resolve between conflicting values that have been measured for the alpha-decay half-life of 151 Tb. By determining the alpha-decay and total decay rates of a chemically purified sample that contained mainly 151 Tb activity, an α/total branching ratio of (8.3±2.5) × 10 −5 was calculated. This ratio corresponds to an alpha half-life of 25±7 y. The indication then is that the alpha decay rate of 151 Tb, in comparison to the decay rates of neighboring doubly even alpha emitters, is hindered by a factor of about 4.5 and not≳ 100 as has been reported by some investigators.
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