Comparison of the Average Number of Prompt Neutrons Emitted in the Fission of U233, U235, Pu239, and Pu241

G. de Saussure; E. G. Silver

doi:dx.doi.org/10.13182/NSE59-A27329

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Home / Publications / Journals / Nuclear Science and Engineering / Volume 5 / Number 1

Comparison of the Average Number of Prompt Neutrons Emitted in the Fission of U²³³, U²³⁵, Pu²³⁹, and Pu²⁴¹

G. de Saussure, E. G. Silver

Nuclear Science and Engineering / Volume 5 / Number 1 / January 1959 / Pages 49-54

Technical Paper / dx.doi.org/10.13182/NSE59-A27329

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A fast coincidence technique was employed to measure the relative prompt-neutron yields per fission of U²³³, U²³⁵, Pu²³⁹, and Pu²⁴¹ induced by thermal neutrons. The values obtained were ν²³/ν²⁵ = 1.02 + 0.01, ν⁴⁹/ν²⁵ = 1.23 ± 0.01, and ν^41/ν²⁵ = 1.295 ± 0.02, where ν²³, ν²⁵, ν⁴⁹, and ν⁴¹ designate the prompt-neutron yields of U²³³, U²³⁵, Pu²³⁹, and Pu²⁴¹, respectively.