Average number of prompt neutrons in Pu239 fission

Prompt fission neutron multiplicity in the 239Pu(n, f) reaction and its energy dependence

“…The bottom panel of Fig. 2 compares the achieved uncertainties to the most precise previous measurement: we observe that such low uncertainties on a broad energy range were never reached before, not even with different experimental techniques ([8, 9, 10, 11, 24, 25, 26, 27, 28, 29] and [6,30,31]). At low E n in , below 5 MeV, the averaged relative difference between our data and ENDF/B-VIII.0 values, shown in Fig.…”

Modeling Systematic Discrepancies in Nuclear-Data Measurements with Machine Learning

“…Ref. [6,7,8,9,10,11,12,13,14,13,14,15,16,17,18,19,20,21,22,23,24,25]. I am happy to report that I am satisfied with the level of development of technical skill that I was afforded to achieve this summer.…”

Energy dependence of prompt fissions neutron multiplicity in the 239Pu(n,f) reaction

“…2b and 3). Such low uncertainties on a broad energy range were never reached before, not even with different experimental techniques ( [15][16][17][18][19][20][21][22][23][24] and [5,9,13]) as shown in the bottom panel of Fig. 3.…”

“…To assess the impact of our data compared to existing data sets, we performed two new evaluations of 239 Pu ν p , with (Ev w/ this work ) and without the data presented here (Ev w/o this work ), using the same methodology. The uncertainties of the all data [8,9,13,[15][16][17][18][19][20][21][22]24] were carefully reviewed and increased according to [57] in cases where uncertainties were missing. Our data reduce the ENDF/B-VIII.0 and Ev w/o this work ν p evaluated relative uncertainty, σ ev ν p , by up to 50% and 60%, respectively, in the 1 to 15 MeV range (see dashed lines in Fig.…”