On the $α - β$ - and $α - K$ -Branching of the Heaviest Natural and Artificial Radioactive Substances

Publisher Website

1 January 1950

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 77 (1) , 98-101
https://doi.org/10.1103/physrev.77.98

Abstract

Based on simple empirical regularities in

α

-decay properties of the heavy elements, the following substances which show

β

-emission or

K

-capture should also be

α

-radioactive with

α - β

- or

α - K

-branching ratios of at least

10^{- 10}

: Ms

{Th}_{2}

, Ms

{Th}_{1}

, AcK;

{}_{88}{Ra}^{225}

,

{}_{91}{Pa}^{233}

,

{}_{93}{Np}^{234}

,

{}_{93}{Np}^{235}

,

{}_{93}{Np}^{236}

,

{}_{93}{Np}^{238}

,

{}_{93}{Np}^{239}

,

{}_{94}{Pu}^{241}

,

{}_{95}{Am}^{242}

.

Keywords

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