Measurement of delayed-neutron group yields following the fission of235U,236U,238U,237Np,242Pu by 14.7 MeV neutrons

Neutron energy dependence of delayed neutron yields and its assessments

“…For 242 Pu, JENDL-4.0 (ENDF/B-VII.1 adopts JENDL-4.0 evaluation) is close to this work up to 10 MeV. It deviates after 10 MeV because this work considers the experimental data at 14.7 MeV of Bobkov et al[45], but JENDL-4.0 does not. JEFF-3.2 predicts delayed neutron yields larger than the others for 242 Pu.…”

“…Experimental data used for the least square fitting. Nucleus References 233 U Tuttle [16], Borzakov et al [40], Piksaikin et al [8], Cesana et al [41] 235 U Tuttle [16], Reeder et al [42], Saleh et al [43], Roshchenko et al [44], Piksaikin et al [5] 236 U Roshchenko et al [25], Bobkov et al [45] 238 U Tuttle [16], Piksaikin et al [46], Meadows [47] 239 Pu Tuttle [16], Piksaikin et al [8] 240 Pu Tuttle [16], Benedetti et al [17], Cesana et al [41] 241 Pu Tuttle [16], Meadows [47], Benedetti et al [17], Cesana et al [41]242 Pu Krick and Evans[48], Bobkov et al[45] …”