https://doi.org/10.1140/epja/i2011-11002-y
Regular Article - Experimental Physics
Neutron-induced fission cross-section of 233U in the energy range 0.5 < En < 20 MeV
1
Istituto Nazionale di Fisica Nucleare (INFN), Trieste, Italy
2
Istituto Nazionale di Fisica Nucleare (INFN), Laboratori Nazionali di Legnaro, Legnaro, Italy
3
CERN, Geneva, Switzerland
4
Istituto Nazionale di Fisica Nucleare (INFN), Bari, Italy
5
CEA, Irfu, Gif-sur-Yvette, France
6
Universidade de Santiago de Compostela, Santiago, Spain
7
Centro de Investigaciones Energeticas Medioambientales y Technologicas, Madrid, Spain
8
University of Lodz, Lodz, Poland
9
Karlsruhe Institute of Technology, Campus Nord, Institut für Kernphysik, Karlsruhe, Germany
10
Atominstitut der Österreichischen Universitäten, Technische Universität Wien, Wien, Austria
11
Centre National de la Recherche Scientifique/IN2P3 - IReS, Strasbourg, France
12
Faculty of Mathematics and Physics, Charles University in Prague, Prague, Czech Republic
13
Universitat Politecnica de Catalunya, Barcelona, Spain
14
International Atomic Energy Agency (IAEA), NAPC/Nuclear Data Section, Vienna, Austria
15
Universidad de Sevilla, Sevilla, Spain
16
Instituto Tecnológico e Nuclear (ITN), Lisbon, Portugal
17
LIP - Coimbra and Departamento de Fisica da Universidade de Coimbra, Coimbra, Portugal
18
University of Notre Dame, Notre Dame, IN, USA
19
Instituto de Fısica Corpuscular, CSIC-Universidad de Valencia, Valencia, Spain
20
Aristotle University of Thessaloniki, Thessaloniki, Greece
21
Joint Institute for Nuclear Research, Frank Laboratory of Neutron Physics, Dubna, Russia
22
Institute of Physics and Power Engineering, Obninsk, Russia
23
Centre National de la Recherche Scientifique/IN2P3 - CENBG, Bordeaux, France
24
Los Alamos National Laboratory, Los Alamos, NM, USA
25
Tokyo Institute of Technology, Tokyo, Japan
26
University of Ioannina, Ioannina, Greece
27
Oak Ridge National Laboratory, Physics Division, Oak Ridge, TN, USA
28
NCSR, Athens, Greece
29
Universidad de Sevilla, Sevilla, Spain
30
Dipartimento di Fisica, Università di Bologna and Sezione INFN di Bologna, Bologna, Italy
31
National Technical University of Athens, Athens, Greece
32
Institut für Fakultät für Physik, Universität Wien, Wien, Austria
33
Pôle Universitaire Léonard de Vinci, Paris La Défense, France
34
CEC-JRC-IRMM, Geel, Belgium
35
Department of Physics and Astronomy, University of Basel, Basel, Switzerland
36
ENEA, Bologna, Italy
37
Università degli Studi di Pavia, Pavia, Italy
38
Centre National de la Recherche Scientifique/IN2P3 - IPN, Orsay, France
Received:
9
September
2010
Revised:
10
November
2010
Accepted:
25
November
2010
Published online:
6
January
2011
The neutron-induced fission cross-section of 233U has been measured at the CERN n_TOF facility relative to the standard fission cross-section of 235U between 0.5 and 20MeV. The experiment was performed with a fast ionization chamber for the detection of the fission fragments and to discriminate against -particles from the natural radioactivity of the samples. The high instantaneous flux and the low background of the n_TOF facility result in data with uncertainties of
3% , which were found in good agreement with previous experiments. The high quality of the present results allows to improve the evaluation of the 233U (n,f) cross-section and, consequently, the design of energy systems based on the Th/U cycle.
© SIF, Springer-Verlag Berlin Heidelberg, 2011