Abstract
The November 1, 1952 thermonuclear explosion ("Mike") produced all of the uranium isotopes , ,... through multiple neutron capture by . The long-lived products of successive 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