Open Access
Issue
ND 2007
2007
Article Number 333
Number of page(s) 4
Section Standard cross sections
DOI https://doi.org/10.1051/ndata:07554
Published online 17 June 2008
International Conference on Nuclear Data for Science and Technology 2007
DOI: 10.1051/ndata:07554

Measurement of the 197Au (n,γ) cross section at n_TOF: towards a new standard

C. Massimi1, 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. Calviani13, 14, D. Cano-Ott5, R. Capote15, 16, C. Carrapiço3, 17, P. Cennini18, V. Chepel19, E. Chiaveri18, N. Colonna20, G. Cortes21, A. Couture22, J. Cox22, M. Dahlfors18, S. David8, I. Dillmann23, C. Domingo-Pardo23, 24, W. Dridi3, I. Duran4, C. Eleftheriadis25, M. Embid-Segura5, L. Ferrant8, A. Ferrari18, R. Ferreira-Marques19, K. Fujii2, W. Furman26, I. Goncalves19, E. González-Romero5, F. Gramegna13, C. Guerrero5, F. Gunsing3, B. Haas27, R. Haight28, M. Heil23, A. Herrera-Martinez18, M. Igashira29, E. Jericha9, F. Käppeler23, Y. Kadi18, D. Karadimos7, D. Karamanis7, M. Kerveno10, P. Koehler30, E. Kossionides31, M. Krticka11, C. Lampoudis25, 3, H. Leeb9, A. Lindote19, I. Lopes19, M. Lozano16, S. Lukic10, J. Marganiec6, S. Marrone20, T. Martínez5, P. Mastinu13, A. Mengoni15, 18, P.M. Milazzo2, C. Moreau2, M. Mosconi23, F. Neves19, H. Oberhummer9, S. O'Brien22, J. Pancin3, C. Papachristodoulou7, C. Papadopoulos32, C. Paradela4, N. Patronis7, A. Pavlik33, P. Pavlopoulos34, L. Perrot3, M.T. Pigni9, R. Plag23, A. Plompen35, A. Plukis3, A. Poch21, J. Praena13, C. Pretel21, J. Quesada16, T. Rauscher36, R. Reifarth28, C. Rubbia37, G. Rudolf10, P. Rullhusen35, J. Salgado17, C. Santos17, L. Sarchiapone18, I. Savvidis25, C. Stephan8, G. Tagliente20, J.L. Tain24, L. Tassan-Got8, L. Tavora17, R. Terlizzi20, G. Vannini1, P. Vaz17, A. Ventura38, D. Villamarin5, M.C. Vincente5, V. Vlachoudis18, R. Vlastou32, F. Voss23, S. Walter23, M. Wiescher22 and K. Wisshak23

1  Dipartimento di Fisica, Università di Bologna, and Sezione INFN di Bologna, 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  LIPCoimbra & Departamento de Fisica da Universidade de Coimbra, Portugal
20  Istituto Nazionale di Fisica Nucleare, Bari, Italy
21  Universitat Politecnica de Catalunya, Barcelona, Spain
22  University of Notre Dame, Notre Dame, USA
23  Forschungszentrum Karlsruhe GmbH (FZK), Institut für Kernphysik, Germany
24  Instituto de Física Corpuscular, CSIC-Universidad de Valencia, Spain
25  Aristotle University of Thessaloniki, Greece
26  Joint Institute for Nuclear Research, Frank Laboratory of Neutron Physics, Dubna, Russia
27  Centre National de la Recherche Scientifique/IN2P3CENBG, Bordeaux, France
28  Los Alamos National Laboratory, New Mexico, USA
29  Tokyo Institute of Technology, Tokyo, Japan
30  Oak Ridge National Laboratory, Physics Division, Oak Ridge, USA
31  NCSR, Athens, Greece
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 PhysicsUniversity of Basel, Switzerland
37  Università degli Studi Pavia, Pavia, Italy
38  ENEA, Bologna, Italy

massimi@bo.infn.it

Published online: 21 May 2008

Abstract
Two different detectors and techniques are employed at n_TOF facility, at CERN, to improve the accuracy of the neutron capture cross section of 197Au(n,γ): a total absorption calorimeter and a set of C6D6. The accurate knowledge of this cross section is of great importance for all the (n,γ) reactions study. The neutron capture cross section and nuclear resonce parameters of the 197Au have been measured in the energy range of 1 eV to 1 kev. The present work shows in average a good agreement with evaluated data libraries, although sizeable differences have been observed for some resonances. Two new resonances have also been discovered. The accuracy of the resonance partial widths has been improved and the main nuclear quantities such as the neutron strength function have been extracted.



© CEA 2008

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