Neutron-Induced Fission Cross Section ofCf252
Physical Review C1971Vol. 4(1), pp. 273–276
Citations Over TimeTop 10% of 1971 papers
Abstract
The neutron-induced fission cross section of $^{252}\mathrm{Cf}$ was measured from 20-eV to 5-MeV neutron energy, using neutrons from the Physics-8 nuclear explosion. Pronounced sub-barrier resonance fission is observed below a few keV neutron energy. The fission threshold is found to occur at \ensuremath{\sim}900 keV. Analysis of the data indicates that the fission barrier is quite transparent, giving an average fission width comparable to the value of 0.02-0.05 eV expected for the average radiative capture width in the resonance region.
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