Artigo Revisado por pares

Alpha-decay half-life of 151Tb

1969; Elsevier BV; Volume: 133; Issue: 1 Linguagem: Inglês

10.1016/0375-9474(69)90461-8

ISSN

1873-1554

Autores

K. S. Toth,

Tópico(s)

Radiopharmaceutical Chemistry and Applications

Resumo

Abstract 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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