Neutron-induced fission cross section of natPb and Bi209 from threshold to 1 GeV: An improved parametrization
D. Tarrío
,
L. Tassan-Got
(1)
,
L. Audouin
(1)
,
B. Berthier
(1)
,
L. Ferrant
(1)
,
S. Isaev
(1)
,
C. Le Naour
(1)
,
C. Stephan
(1)
,
D. Trubert
(1)
,
S. David
(1)
,
G. Aerts
(2)
,
S. Andriamonje
(2)
,
E. Berthoumieux
(2)
,
C. Carrapiço
(2)
,
W. Dridi
(2)
,
F. Gunsing
(2)
,
C. Lampoudis
(2)
,
J. Pancin
(2)
,
L. Perrot
(2)
,
A. Plukis
(2)
,
P. Baumann
(3)
,
M. Kerveno
(3)
,
S. Lukic
(3)
,
G. Rudolf
(3)
,
B. Haas
(4)
,
P. Pavlopoulos
(5)
D. Tarrío
- Fonction : Auteur
C. Le Naour
- Fonction : Auteur
- PersonId : 739620
- IdHAL : claire-le-naour
- ORCID : 0000-0002-1009-6742
- IdRef : 16492311X
S. David
- Fonction : Auteur
- PersonId : 742757
- IdHAL : sylvain-david-in2p3
M. Kerveno
- Fonction : Auteur
- PersonId : 737538
- IdHAL : maelle-kerveno
- ORCID : 0000-0003-3247-6372
Résumé
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.