Spontaneous-Fission Half-Lives of Cf254 and Cm250

J. R. Huizenga and H. Diamond
Phys. Rev. 107, 1087 – Published 15 August 1957
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Abstract

Least-squares analysis of spontaneous-fission data obtained over the last four years from a californium sample produced in the November, 1952 thermonuclear test gives a Cf254 spontaneous-fission half-life of 56.2±0.7 days in agreement with the astrophysical value of 55±1 days. Some comments are made on the neutron buildup in Type I supernovae and the influence of a possible double magic number, N=184, Z=82, at A=266 on the yield curve near A=254. An approximate spontaneous-fission half-life of 2×104 years for Cm250 is deduced from a curium sample also produced in the November, 1952 thermonuclear test.

  • Received 3 May 1957

DOI:https://doi.org/10.1103/PhysRev.107.1087

©1957 American Physical Society

Authors & Affiliations

J. R. Huizenga and H. Diamond

  • Argonne National Laboratory, Lemont, Illinois

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Issue

Vol. 107, Iss. 4 — August 1957

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