Open Access
ND 2007
Article Number 112
Number of page(s) 4
Section Facilities and experimental techniques
Published online 17 June 2008
International Conference on Nuclear Data for Science and Technology 2007
DOI: 10.1051/ndata:07675

Neutron-induced fission cross sections measurements at n_TOF

L. Audouin1, 2, L. Tassan-Got2, 1, C. Stéphan2, 1, C. Paradela2, 3, B. Berthier2, 1, L. Ferrant1, 1, S. Isaev2, C. Le Naour2, 1, D. Trubert2, 1, I. Duran3 and the n_TOF collaboration4

1  Université Paris XI, IPN Orsay, 91406 Orsay, France
2  CNRS/IN2P3, UMR 8608, 91406 Orsay, France
3  Universidad de Santiago de Compostela, Spain

Published online: 21 May 2008

The neutron-induced fission cross sections of 233U, 234U, 235U, 238U, 232Th, 237Np, 209Bi, natPb have been measured at the n_TOF facility at CERN over 9 orders of magnitude in neutron energy using 235U as a reference. Parallel Plate Avalanche Counters were used to detect both fission fragments in coincidence, thus efficiently discriminating fissions from other reactions. Data benefit from the remarkable energy resolution of the n_TOF facility. They are found in overall good agreement with databases and previous measurements, but some clear discrepancies can be put in evidence. These data are the first full coverage of the high-energy region (up to 1 GeV).

© CEA 2008