Total kinetic energy release inPu239(n,f)post-neutron emission from 0.5 to 50 MeV incident neutron energy

Fission fragment yields and total kinetic energy release in neutron-induced fission of235,238U,and239Pu

“…The total kinetic energy release in fission demonstrates a general trend of decreasing with increasing incident neutron energy [3]. There is however, only limited experimental information for the major The TKE as a function of incident neutron energy for U-238 [4], U-235, and Pu-239 [5] is shown in Fig. 2.…”

Performance of a MICROMEGAS-based TPC in a high-energy neutron beam

“…2 At the typical operating pressures of the fissionTPC (500-900 Torr), fission fragments will be stopped within several centimeters while depositing their full energy into the gas. The total kinetic energy released in neutron-induced fission is ∼ 170 MeV [11,12], with that energy being shared between two fragments. The short track lengths and high kinetic energies of fission fragments results in high-density primary electron clouds (about 10 6 electron-ion pairs) which allows the fissionTPC MICROMEGAS to operate at relatively low gains, ranging from 10-50.…”

Implementing and testing theoretical fission fragment yields in a Hauser-Feshbach statistical decay framework

“…We have also done a comparison of the prompt gamma observables, mainly the average total gamma energy �E T γ � and average total multiplicity �M γ � as a function of incident neutron energy. These values are very sensitive to detector thresholds [40] and very limited Comparison of the average total kinetic energy of the fission fragments �TKE� from two data sources [19,22], a parameterized model [39], and the CGMF calculations under the same case conditions as above. The data and parameterized model have been adjusted to have the same value for thermal neutrons.…”

“…For example, at thermal energies values of 177.76 MeV [16][17][18] and 178.89 MeV [19][20][21] are used for 239 Pu(n,f) and 241 Pu(n,f), respectively. The slopes ∂�TKE�/∂E n are taken from a variety of sources [12,19,22]. The �TKE�(A) are taken from Vorobyeva [23,24] for the various plutonium isotopes, but we have also used other sources [25][26][27] and found minimal impact on our results.…”

“…The data and parameterized model have been adjusted to have the same value for thermal neutrons. We note that the Meierbachtol data [22] corresponds to the post-neutron emitted kinetic energies. The shape beyond second chance fission implies a lower �TKE� for the fissioning nucleus of 239 Pu than the one used in our simple Z 2 /A 1/3 fit.…”