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Fission Neutron Spectrum of Pu 239

1952; American Institute of Physics; Volume: 88; Issue: 4 Linguagem: Inglês

10.1103/physrev.88.823

1536-6065

N. G. Nereson,

Nuclear reactor physics and engineering

The energy distribution of prompt and delayed neutrons originating from thermal fission of ${\mathrm{Pu}}^{239}$ has been measured from 0.5 to 8 Mev with nuclear plates. The spectrum obtained shows a maximum intensity in the 0.6- to 0.8-Mev region and an exponential slope of 4.3\ifmmode\pm\else\textpm\fi{}0.2 Mev per decade of intensity in the energy region above 2 Mev.