Simultaneous Measurement of Prompt Neutrons and Fission Fragments for 239Pu(nth,f)

摘要: The multiplicity and energy of the prompt neutrons emitted from fission fragments for 239Pu(nth, f) were measured as functions fragment mass total kinetic energy. results compared with those 233U(nth, predicted values by multi-channel theory random neck rupture model. neutron multiplicity, ⟨V⟩(m*), show saw-tooth trend agree each other. decreases linearly increasing resulting in —d⟨TKE⟩/d⟨Vtot⟩=16.5±0.4MeV/neutron. slope vs. energy, —d⟨V⟩/d⟨TKE⟩, was plotted against mass. Its shape agrees that f). average emission ⟨η⟩(m*), follows a bell about symmetric accompanying higher very asymmetric fissions 233U (nth, excitation (TXE)(m*) determined two manners:...