PT Journal
AU n_TOF Collaboration (Tarrio D. et al.)
   Domingo-Pardo, C
   Tain, JL
TI Neutron-induced fission cross section of Pb-nat and Bi-209 from threshold to 1 GeV: An improved parametrization
SO Physical Review C
JI Phys. Rev. C
PY 2011
BP 044620
EP 9pp
VL 83
IS 4
DI 10.1103/PhysRevC.83.044620
LA English
AB Neutron-induced fission cross sections for Pb-nat and Bi-209 were measured with a white-spectrum neutron source at the CERN Neutron Time-of-Flight (n_TOF) facility. The experiment, using neutrons from threshold up to 1 GeV, provides the first results for these nuclei above 200 MeV. The cross sections were measured relative to U-235 and U-238 in a dedicated fission chamber with parallel plate avalanche counter detectors. Results are compared with previous experimental data. Upgraded parametrizations of the cross sections are presented, from threshold energy up to 1 GeV. The proposed new sets of fitting parameters improve former results along the whole energy range.
ER