Prompt fission gamma-ray emission spectral data for 239Pu(n,f) using fast directional neutrons from the LICORNE neutron source

摘要

Prompt fission gamma-ray spectra (PFGS) have been measured for the~(239)Pu(n,f) reaction using fast neutrons at ē_(n)=1.81 MeV produced by the LICORNE directional neutron source. The setup makes use of LaBr_(3)scintillation detectors and PARIS phoswich detectors to measure the emitted prompt fission gamma rays (PFG). The mean multiplicity, average total energy release per fission and average energy of photons are extracted from the unfolded PFGS. These new measurements provide complementary information to other recent work on thermal neutron induced fission of~(239)Pu and spontaneous fission of~(252)Cf.