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Delayed Neutrons from Fission of U235

D. J. Hughes, J. Dabbs, A. Cahn, and D. Hall*

  • Argonne National Laboratory, Chicago, Illinois

  • *J. Dabbs, Clinton Laboratories; A. Cahn, Bureau of Standards, Washington, D. C.; D. Hall, Los Alamos Laboratory.

Phys. Rev. 73, 111 – Published 15 January, 1948

DOI: https://doi.org/10.1103/PhysRev.73.111

Abstract

The periods, yields and energies of the delayed neutrons from fission of U235 have been measured with a pneumatic transfer apparatus ("rabbit") at the heavy water pile of the Argonne Laboratory. The following periods account for the saturated decay curve of delayed neutrons for times longer than 0.02 sec. after irradiation ceases:

The application of the delayed neutron data to the constants of pile kinetics is discussed and the value of the inhour (the pile reactivity unit) is calculated.

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