Elsevier

Physics Letters B

Volume 45, Issue 3, 23 July 1973, Pages 244-246
Physics Letters B

Alpha-particle decay of 218Th, a new isotope

https://doi.org/10.1016/0370-2693(73)90194-9Get rights and content

Abstract

A new isotope, 90218Th128, has been found to decay with Eα = 9.67 ± 0.02 MeV and t12 = 96 ± 7 ns. The reduced α-particle width of 218Th is about 1.4 times the value expected from the general trend of the N = 128 isotones with Z = 84−89.

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There are more references available in the full text version of this article.

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    A detailed timeline of the discovery of thorium radioactivity can be found in the 1966 article by Badash [55]. Hiruta et al. reported the discovery of 218Th in the 1973 paper “Alpha-particle decay of 218Th, a new isotope” [62]. A 209Bi target was bombarded with 65–96 MeV 14N beams from the RIKEN cyclotron forming 218Th in the (5n) fusion–evaporation reaction.

  • Nuclear data sheets for A = 218

    2006, Nuclear Data Sheets
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    2019, Nuclear Data Sheets
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On leave of absence from Department of Physics, Tokyo Institute of Technology.

∗∗

Present address: Department of Physics, The University of Manchester, UK.

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