Heavy Isotope Abundances in Mike Thermonuclear Device

H. Diamond, P. R. Fields, C. S. Stevens, M. H. Studier, S. M. Fried, M. G. Inghram, D. C. Hess, G. L. Pyle, J. F. Mech, W. M. Manning, A. Ghiorso, S. G. Thompson, G. H. Higgins, G. T. Seaborg, C. I. Browne, H. L. Smith, and R. W. Spence
Phys. Rev. 119, 2000 – Published 15 September 1960
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Abstract

The November 1, 1952 thermonuclear explosion ("Mike") produced all of the uranium isotopes U239, U240,...U255 through multiple neutron capture by U238. The long-lived products of successive β decays from these isotopes were measured mass spectrometrically and radiometrically. The logarithms of the abundances decline smoothly with increasing mass number; the even-mass abundances slightly exceed the geometric mean of adjacent odd-mass abundances. Some nuclear properties of neutron-rich heavy nuclides, not subject to ordinary investigation are inferred.

  • Received 2 May 1960

DOI:https://doi.org/10.1103/PhysRev.119.2000

©1960 American Physical Society

Authors & Affiliations

H. Diamond, P. R. Fields, C. S. Stevens, M. H. Studier, S. M. Fried, M. G. Inghram, D. C. Hess, G. L. Pyle*, J. F. Mech, and W. M. Manning

  • Argonne National Laboratory, Lemont, Illinois

A. Ghiorso, S. G. Thompson, G. H. Higgins, and G. T. Seaborg

  • Radiation Laboratory and Department of Chemistry, University of California, Berkeley, California

C. I. Browne, H. L. Smith, and R. W. Spence

  • Los Alamos Scientific Laboratory, Los Alamos, New Mexico

  • *Currently at White Sands Proving Ground, White Sands, New Mexico.

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Vol. 119, Iss. 6 — September 1960

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