Neutron-induced fission cross section of natPb and Bi209 from threshold to 1 GeV: An improved parametrization

Neutron-induced fission cross sections for natPb and Bi209 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...

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Veröffentlicht in:	Physical review. C 2011-04, Vol.83
Hauptverfasser:	Tarrío, D., Tassan-Got, L., Audouin, L., Berthier, B., Ferrant, L., Isaev, S., Le Naour, C., Stephan, C., Trubert, D., David, S., Aerts, G., Andriamonje, S., Berthoumieux, E., Carrapiço, C., Dridi, W., Gunsing, F., Lampoudis, C., Pancin, J., Perrot, L., Plukis, A., Baumann, P., Kerveno, M., Lukic, S., Rudolf, G., Haas, B., Pavlopoulos, P.
Format:	Artikel
Sprache:	eng
Schlagworte:	Nuclear Experiment Physics
Online-Zugang:	Volltext
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Zusammenfassung:	Neutron-induced fission cross sections for natPb and Bi209 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 U235 and U238 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.
ISSN:	2469-9985 2469-9993
DOI:	10.1103/PhysRevC.83.044620