On the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>α</mi><mo>−</mo><mi>β</mi></math></span>- and <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>α</mi><mo>−</mo><mi>K</mi></math></span>-Branching of the Heaviest Natural and Artificial Radioactive Substances

W. Jentschke

doi:10.1103/PhysRev.77.98

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

W. Jentschke

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Phys. Rev. 77, 98 – Published 1 January, 1950

DOI: 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; ${}_{88}{Ra}^{225}$ , ${}_{91}{Pa}^{233}$ , ${}_{93}{Np}^{234}$ , ${}_{93}{Np}^{235}$ , ${}_{93}{Np}^{236}$ , ${}_{93}{Np}^{238}$ , ${}_{93}{Np}^{239}$ , ${}_{94}{Pu}^{241}$ , ${}_{95}{Am}^{242}$ .

References (10)

M. Perey, J. de Phys. et rad. 10, 435 (1939) M. Perey and Lecoin, J. de phys. et rad. 10, 439 (1939)
B. Karlik and T. Bernert, Zeits. f. Physik 123, 51 (1944)
Corson, McKenzie, and Segrè, Phys. Rev. 57, 1087 (1940)
Hagemann, Katzin, Studier, Ghiorso, and Seaborg, Phys. Rev. 72, 252 (1947) English, Cranshaw, Demers, Harvey, Hincks, Jelley, and May, 72, 253 (1947)
J. Schintlmeister, Oesterreichische Chemiker Zeitung Nr. 17, 1938, Nr. 9/12, 1943 J. de phys. et rad., serie VIII, 3, 17 (1942) N. Feather, Proc. Roy. Soc. Edinburgh, 62, 211 (1946)
Seaborg, James, Florin, Hopkins, Studier, Hyde and Ghiorso, Science, 104, 379 (1946) Seaborg, James, and Morgan, Chem. Eng. News 25, 358 (1947) James M. Cork, Radioactivity and Nuclear Physics (New York, 1947)
E. Broda and N. Feather. Proc. Rov. Soc. 190, 20 (1947)
J. Schintlmeister and E. Rona, Akad. Wiss. Wien 147, 49 (1938)
O. Hahn and O. Erbacher, Physik Zeits. 27, 531 (1926)
O. Hahn, Naturwiss. 14, 159 (1926)

[c1] M. Perey, J. de Phys. et rad. 10, 435 (1939) M. Perey and Lecoin, J. de phys. et rad. 10, 439 (1939)

[c2] B. Karlik and T. Bernert, Zeits. f. Physik 123, 51 (1944)

[c3] Corson, McKenzie, and Segrè, Phys. Rev. 57, 1087 (1940)

[c4] Hagemann, Katzin, Studier, Ghiorso, and Seaborg, Phys. Rev. 72, 252 (1947) English, Cranshaw, Demers, Harvey, Hincks, Jelley, and May, 72, 253 (1947)

[c5] J. Schintlmeister, Oesterreichische Chemiker Zeitung Nr. 17, 1938, Nr. 9/12, 1943 J. de phys. et rad., serie VIII, 3, 17 (1942) N. Feather, Proc. Roy. Soc. Edinburgh, 62, 211 (1946)

[c6] Seaborg, James, Florin, Hopkins, Studier, Hyde and Ghiorso, Science, 104, 379 (1946) Seaborg, James, and Morgan, Chem. Eng. News 25, 358 (1947) James M. Cork, Radioactivity and Nuclear Physics (New York, 1947)

[c7] E. Broda and N. Feather. Proc. Rov. Soc. 190, 20 (1947)

[c8] J. Schintlmeister and E. Rona, Akad. Wiss. Wien 147, 49 (1938)

[c9] O. Hahn and O. Erbacher, Physik Zeits. 27, 531 (1926)

[c10] O. Hahn, Naturwiss. 14, 159 (1926)

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

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

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