Measurement of the neutron-induced fission cross-section of 241Am at the time-of-flight facility n_TOF

F. Belloni; M. Calviani; N. Colonna; P. Mastinu; P. M. Milazzo; U. Abbondanno; G. Aerts; H. Álvarez; F. Alvarez-Velarde; S. Andriamonje; J. Andrzejewski; L. Audouin; G. Badurek; M. Barbagallo; P. Baumann; F. Bečvář; E. Berthoumieux; F. Calviño; D. Cano-Ott; R. Capote; C. Carrapiço; P. Cennini; V. Chepel; E. Chiaveri; G. Cortes; A. Couture; J. Cox; M. Dahlfors; S. David; I. Dillmann; C. Domingo-Pardo; W. Dridi; I. Duran; C. Eleftheriadis; M. Embid-Segura; A. Ferrari; R. Ferreira-Marques; K. Fujii; W. Furman; I. Goncalves; E. Gonzalez-Romero; A. Goverdovski; F. Gramegna; C. Guerrero; F. Gunsing; B. Haas; R. Haight; M. Heil; A. Herrera-Martinez; M. Igashira; E. Jericha; F. Käppeler; Y. Kadi; D. Karadimos; D. Karamanis; M. Kerveno; P. Koehler; E. Kossionides; M. Krtička; C. Lamboudis; H. Leeb; A. Lindote; I. Lopes; M. Lozano; S. Lukic; J. Marganiec; S. Marrone; T. Martínez; C. Massimi; M. H. Meaze; A. Mengoni; C. Moreau; M. Mosconi; F. Neves; H. Oberhummer; S. O’Brien; C. Papachristodoulou; C. Papadopoulos; C. Paradela; N. Patronis; A. Pavlik; P. Pavlopoulos; L. Perrot; M. T. Pigni; R. Plag; A. Plompen; A. Plukis; A. Poch; J. Praena; C. Pretel; J. Quesada; T. Rauscher; R. Reifarth; M. Rosetti; C. Rubbia; G. Rudolf; P. Rullhusen; J. Salgado; C. Santos; L. Sarchiapone; I. Savvidis; C. Stephan; G. Tagliente; J. L. Tain; D. Tarrio; L. Tassan-Got; L. Tavora; R. Terlizzi; G. Vannini; P. Vaz; A. Ventura; D. Villamarin; M. C. Vincente; V. Vlachoudis; R. Vlastou; F. Voss; S. Walter; M. Wiescher; K. Wisshak

doi:10.1140/epja/i2013-13002-3

2023 Impact factor 2.6

Hadrons and Nuclei

Open Access

Eur. Phys. J. A (2013) 49: 2
https://doi.org/10.1140/epja/i2013-13002-3

Regular Article - Experimental Physics

Measurement of the neutron-induced fission cross-section of ²⁴¹Am at the time-of-flight facility n_TOF

F. Belloni¹, M. Calviani²^,3, N. Colonna⁴, P. Mastinu², P. M. Milazzo¹, U. Abbondanno¹, G. Aerts⁵, H. Álvarez⁶, F. Alvarez-Velarde⁷, S. Andriamonje⁵, J. Andrzejewski⁸, L. Audouin⁹, G. Badurek¹⁰, M. Barbagallo⁴, P. Baumann¹¹, F. Bečvář¹², E. Berthoumieux⁵, F. Calviño¹³, D. Cano-Ott⁶, R. Capote¹⁴^,15, C. Carrapiço¹⁶, P. Cennini³, V. Chepel¹⁷, E. Chiaveri³, G. Cortes¹³, A. Couture¹⁸, J. Cox¹⁸, M. Dahlfors³, S. David¹¹, I. Dillmann⁹, C. Domingo-Pardo¹⁹, W. Dridi⁵, I. Duran⁶, C. Eleftheriadis²⁰, M. Embid-Segura⁶, A. Ferrari³, R. Ferreira-Marques¹⁷, K. Fujii¹, W. Furman²¹, I. Goncalves¹⁶, E. Gonzalez-Romero⁶, A. Goverdovski²², F. Gramegna², C. Guerrero⁷, F. Gunsing⁵, B. Haas²³, R. Haight²⁴, M. Heil⁹, A. Herrera-Martinez³, M. Igashira²⁵, E. Jericha¹⁰, F. Käppeler⁹, Y. Kadi³, D. Karadimos²⁶, D. Karamanis²⁶, M. Kerveno¹¹, P. Koehler²⁷, E. Kossionides²⁸, M. Krtička¹², C. Lamboudis²⁰, H. Leeb¹⁰, A. Lindote¹⁷, I. Lopes¹⁷, M. Lozano²⁹, S. Lukic¹¹, J. Marganiec⁸, S. Marrone⁴, T. Martínez⁷, C. Massimi³⁰, M. H. Meaze⁴, A. Mengoni³^,14, C. Moreau¹, M. Mosconi⁹, F. Neves¹⁷, H. Oberhummer¹⁰, S. O’Brien¹⁸, C. Papachristodoulou²⁶, C. Papadopoulos³¹, C. Paradela⁶, N. Patronis²⁶, A. Pavlik³², P. Pavlopoulos³³, L. Perrot⁵, M. T. Pigni²⁷, R. Plag⁹, A. Plompen³⁴, A. Plukis⁵, A. Poch¹³, J. Praena²⁹, C. Pretel¹³, J. Quesada²⁹, T. Rauscher³⁵, R. Reifarth²⁴, M. Rosetti³⁶, C. Rubbia³⁷, G. Rudolf¹¹, P. Rullhusen³⁴, J. Salgado¹⁶, C. Santos¹⁶, L. Sarchiapone³, I. Savvidis²⁰, C. Stephan³⁸, G. Tagliente⁴, J. L. Tain¹⁹, D. Tarrio⁶, L. Tassan-Got³⁸, L. Tavora¹⁶, R. Terlizzi⁴, G. Vannini³⁰, P. Vaz¹⁶, A. Ventura³⁶, D. Villamarin⁷, M. C. Vincente⁷, V. Vlachoudis³, R. Vlastou³¹, F. Voss⁹, S. Walter⁹, M. Wiescher¹⁸ and K. Wisshak⁹

¹ Istituto Nazionale di Fisica Nucleare (INFN), Trieste, Italy
² Istituto Nazionale di Fisica Nucleare (INFN), Laboratori Nazionali di Legnaro, Trieste, 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 de Compostela, 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, Nord, 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 & Departamento de Fisica da Universidade de Coimbra, Coimbra, Portugal
¹⁸ University of Notre Dame, Notre Dame, USA
¹⁹ Instituto de Física 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, New Mexico, USA
²⁵ Tokyo Institute of Technology, Tokyo, Japan
²⁶ University of Ioannina, Ioannina, Greece
²⁷ Oak Ridge National Laboratory, Oak Ridge, USA
²⁸ NCSR, Athens, Greece
²⁹ Universidad de Sevilla, Sevilla, Spain
³⁰ Dipartimento di Fisica, Università 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: 4 September 2012
Accepted: 30 November 2012
Published online: 7 January 2013

Abstract

The neutron-induced fission cross-section of ²⁴¹Am has been measured relative to the standard fission cross-section of ²³⁵U between 0.5 and 20MeV. The experiment was performed at the CERN n_TOF facility. Fission fragments were detected by a fast ionization chamber by discriminating against the $\alpha$ -particles from the high radioactivity of the samples. The high instantaneous neutron flux and the low background of the n_TOF facility enabled us to obtain uncertainties of $\approx$ 5%. With the present results it was possible to resolve discrepancies between previous data sets and to confirm current evaluations, thus providing important information for design studies of future reactors with improved fuel burn-up.

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