High-energy Neutron-induced Fission Cross Sections of Natural Lead and Bismuth-209
Langue
en
Article de revue
Ce document a été publié dans
Journal of the Korean Physical Society. 2011-08-11, vol. 59, p. 1904-1907
Korean physical society
Résumé en anglais
The CERN Neutron Time-Of-Flight (n TOF) facility is well suited to measure small neutron- induced ssion cross sections, as those of subactinides. The cross section ratios of natPb and 209Bi relative to 235U and 238U were ...Lire la suite >
The CERN Neutron Time-Of-Flight (n TOF) facility is well suited to measure small neutron- induced ssion cross sections, as those of subactinides. The cross section ratios of natPb and 209Bi relative to 235U and 238U were measured using PPAC detectors. The fragment coincidence method allows to unambiguously identify the ssion events. The present experiment provides the rst results for neutron-induced ssion up to 1 GeV for natPb and 209Bi. A good agreement with previous experimental data below 200 MeV is shown. The comparison with proton-induced ssion indicates that the limiting regime where neutron-induced and proton-induced ssion reach equal cross section is close to 1 GeV.< Réduire
Mots clés en anglais
Nuclear data
Neutron-induced ssion reactions
Pb-nat(n
f)
Bi-209(n
Spallation neutron source
n TOF facility
Origine
Importé de halUnités de recherche