International Conference on Nuclear Data for Science and Technology 2007
DOI: 10.1051/ndata:07732

Measurement of the ^{90,91,92,93,94,96}Zr(n,γ) and ¹³⁹La(n,γ) cross sections at n_TOF

G. Tagliente¹, U. Abbondanno², G. Aerts³, H. Álvarez⁴, F. Álvarez-Velarde⁵, S. Andriamonje³, J. Andrzejewski⁶, P. Assimakopoulos⁷, L. Audouin⁸, G. Badurek⁹, P. Baumann¹⁰, F. Becvár¹¹, E. Berthoumieux³, F. Calviño¹², M. Calviani^{13, 14}, D. Cano-Ott⁵, R. Capote^{15, 16}, C. Carrapiço^{17, 3}, P. Cennini¹⁸, V. Chepel¹⁹, E. Chiaveri¹⁸, N. Colonna¹, G. Cortes²⁰, A. Couture²¹, J. Cox²¹, M. Dahlfors¹⁸, S. David⁸, I. Dillmann²², C. Domingo-Pardo^{23, 22}, W. Dridi³, I. Duran⁴, C. Eleftheriadis²⁴, M. Embid-Segura⁵, L. Ferrant⁸, A. Ferrari¹⁸, R. Ferreira-Marques¹⁹, K. Fujii², W. Furman²⁵, I. Goncalves¹⁹, E. González-Romero⁵, F. Gramegna¹³, C. Guerrero⁵, F. Gunsing³, B. Haas²⁶, R. Haight²⁷, M. Heil²², A. Herrera-Martinez¹⁸, M. Igashira²⁸, E. Jericha⁹, F. Käppeler²², Y. Kadi¹⁸, D. Karadimos⁷, D. Karamanis⁷, M. Kerveno¹⁰, P. Koehler²⁹, E. Kossionides³⁰, M. Krticka¹¹, C. Lampoudis^{24, 3}, H. Leeb⁹, A. Lindote¹⁹, I. Lopes¹⁹, M. Lozano¹⁶, S. Lukic¹⁰, J. Marganiec⁶, S. Marrone¹, T. Martínez⁵, C. Massimi³¹, P. Mastinu¹³, A. Mengoni^{15, 18}, P.M. Milazzo², C. Moreau², M. Mosconi²², F. Neves¹⁹, H. Oberhummer⁹, S. O'Brien²¹, J. Pancin³, C. Papachristodoulou⁷, C. Papadopoulos³², C. Paradela⁴, N. Patronis⁷, A. Pavlik³³, P. Pavlopoulos³⁴, L. Perrot³, M.T. Pigni⁹, R. Plag²², A. Plompen³⁵, A. Plukis³, A. Poch²⁰, J. Praena¹³, C. Pretel²⁰, J. Quesada¹⁶, T. Rauscher³⁶, R. Reifarth²⁷, C. Rubbia³⁷, G. Rudolf¹⁰, P. Rullhusen³⁵, J. Salgado¹⁷, C. Santos¹⁷, L. Sarchiapone¹⁸, I. Savvidis²⁴, C. Stephan⁸, J.L. Tain²³, L. Tassan-Got⁸, L. Tavora¹⁷, R. Terlizzi¹, G. Vannini³¹, P. Vaz¹⁷, A. Ventura³⁸, D. Villamarin⁵, M.C. Vincente⁵, V. Vlachoudis¹⁸, R. Vlastou³², F. Voss²², S. Walter²², M. Wiescher²¹ and K. Wisshak<sup>22

1</sup>  Istituto Nazionale di Fisica Nucleare, Bari, Italy
²  Istituto Nazionale di Fisica Nucleare, Trieste, Italy
³  CEA/Saclay-DSM/DAPNIA, Gif-sur-Yvette, France
⁴  Universidade de Santiago de Compostela, Spain
⁵  Centro de Investigaciones Energeticas Medioambientales y Tecnologicas, Madrid, Spain
⁶  University of Lodz, Lodz, Poland
⁷  University of Ioannina, Greece
⁸  Centre National de la Recherche Scientifique/IN2P3-IPN, Orsay, France
⁹  Atominstitut der Österreichischen Universitäten, Technische Universität Wien, Austria
¹⁰  Centre National de la Recherche Scientifique/IN2P3-IReS, Strasbourg, France
¹¹  Charles University, Prague, Czech Republic
¹²  Universidad Politecnica de Madrid, Spain
¹³  Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Italy
¹⁴  Dipartimento di Fisica, Università di Padova, Italy
¹⁵  International Atomic Energy Agency (IAEA), Nuclear Data Section, Vienna, Austria
¹⁶  Universidad de Sevilla, Spain
¹⁷  Instituto Tecnológico e Nuclear (ITN), Lisbon, Portugal
¹⁸  CERN, Geneva, Switzerland
¹⁹  LIP-Coimbra & Departamento de Fisica da Universidade de Coimbra, Portugal
²⁰  Universitat Politecnica de Catalunya, Barcelona, Spain
²¹  University of Notre Dame, Notre Dame, USA
²²  Forschungszentrum Karlsruhe GmbH (FZK), Institut für Kernphysik, Germany
²³  Instituto de Física Corpuscular, CSIC-Universidad de Valencia, Spain
²⁴  Aristotle University of Thessaloniki, Greece
²⁵  Joint Institute for Nuclear Research, Frank Laboratory of Neutron Physics, Dubna, Russia
²⁶  Centre National de la Recherche Scientifique/IN2P3-CENBG, Bordeaux, France
²⁷  Los Alamos National Laboratory, New Mexico, USA
²⁸  Tokyo Institute of Technology, Tokyo, Japan
²⁹  Oak Ridge National Laboratory, Physics Division, Oak Ridge, USA
³⁰  NCSR, Athens, Greece
³¹  Dipartimento di Fisica, Università di Bologna, and Sezione INFN di Bologna, Italy
³²  National Technical University of Athens, Greece
³³  Institut für Isotopenforschung und Kernphysik, Universität Wien, Austria
³⁴  Pôle Universitaire Léonard de Vinci, Paris-La Défense, France
³⁵  CEC-JRC-IRMM, Geel, Belgium
³⁶  Department of Physics - University of Basel, Switzerland
³⁷  Università degli Studi Pavia, Pavia, Italy
³⁸  ENEA, Bologna, Italy

giuseppe.tagliente@ba.infn.it

Published online: 21 May 2008

Abstract
Neutron capture cross sections of Zr and La isotopes have important implications in the field of nuclear astrophysics as well as in the nuclear technology. In particular the Zr isotopes play a key role for the determination of the neutron density in the He burning zone of the Red Giant star, while the ¹³⁹La is important to monitor the s-process abundances from Ba up to Pb. Zr is also largely used as structural materials of traditional and advanced nuclear reactors. The nuclear resonance parameters and the cross section of ^{90,91,92,93,94,96}Zr and ¹³⁹La have been measured at the n_TOF facility at CERN. Based on these data the capture resonance strength and the Maxwellian-averaged cross section were calculated.

© CEA 2008