Phys. Rev. C
81,
044616
(2010)
[22 pages]
197Au(n,γ) cross section in the resonance region
C. Massimi et al. (n_TOF Collaboration)
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C. Massimi1, C. Domingo-Pardo2,*, G. Vannini1, L. Audouin3, C. Guerrero4, U. Abbondanno5, G. Aerts6, H. Álvarez7, F. Álvarez-Velarde4, S. Andriamonje6, J. Andrzejewski8, P. Assimakopoulos9,†, G. Badurek10, P. Baumann11, F. Bečvář12, F. Belloni5, E. Berthoumieux6, F. Calviño13, M. Calviani14, D. Cano-Ott4, R. Capote15,16, C. Carrapiço6,17, P. Cennini14, V. Chepel18, E. Chiaveri14, N. Colonna19, G. Cortes20, A. Couture21, J. Cox21, M. Dahlfors14, S. David3, I. Dillmann22, W. Dridi6, I. Duran7, C. Eleftheriadis23, L. Ferrant3,†, A. Ferrari14, R. Ferreira-Marques18, K. Fujii5, W. Furman24, S. Galanopoulos25, I. F. Gonçalves17, E. González-Romero4, F. Gramegna26, F. Gunsing6, B. Haas27, R. Haight28, M. Heil22, A. Herrera-Martinez14, M. Igashira29, E. Jericha10, F. Käppeler22, Y. Kadi14, D. Karadimos9, D. Karamanis9, M. Kerveno11, P. Koehler30, E. Kossionides31, M. Krtička12, C. Lampoudis32, C. Lederer33, H. Leeb10, A. Lindote18, I. Lopes18, M. Lozano16, S. Lukic11, J. Marganiec8, S. Marrone19, T. Martínez4, P. Mastinu26, E. Mendoza4, A. Mengoni14,15, P. M. Milazzo5, C. Moreau5, M. Mosconi22, F. Neves18, H. Oberhummer10, S. O’Brien21, J. Pancin6, C. Papadopoulos25, C. Paradela7, A. Pavlik33, P. Pavlopoulos34, G. Perdikakis25, L. Perrot6, M. T. Pigni10, R. Plag22, A. Plompen32, A. Plukis6, A. Poch20, J. Praena26, C. Pretel20, J. Quesada16, T. Rauscher35, R. Reifarth28, M. Rosetti36, C. Rubbia14, G. Rudolf11, P. Rullhusen32, L. Sarchiapone14, R. Sarmento17, I. Savvidis23, C. Stephan3, G. Tagliente19, J. L. Tain37, L. Tassan-Got3, L. Tavora17, R. Terlizzi19, P. Vaz17, A. Ventura36, D. Villamarin4, V. Vlachoudis14, R. Vlastou25, F. Voss22, S. Walter22, M. Wiescher21, and K. Wisshak22 (n_TOF Collaboration)
1Dipartimento di Fisica, Università di Bologna, and Sezione INFN di Bologna, Italy
2GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
3Centre National de la Recherche Scientifique/IN2P3-IPN, Orsay, France
4Centro de Investigaciones Energeticas Medioambientales y Tecnologicas, Madrid, Spain
5Istituto Nazionale di Fisica Nucleare, Trieste, Italy
6CEA/Saclay-IRFU, Gif-sur-Yvette, France
7Universidade de Santiago de Compostela, Spain
8University of Lodz, Lodz, Poland
9University of Ioannina, Greece
10Atominstitut der Österreichischen Universitäten, Technische Universität Wien, Austria
11Centre National de la Recherche Scientifique/IN2P3-IReS, Strasbourg, France
12Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
13Universidad Politecnica de Madrid, Spain
14CERN, Geneva, Switzerland
15International Atomic Energy Agency (IAEA), Nuclear Data Section, Vienna, Austria
16Universidad de Sevilla, Spain
17Instituto Tecnológico e Nuclear-ITN, Lisbon, Portugal
18LIP-Coimbra & Departamento de Fisica da Universidade de Coimbra, Portugal
19Istituto Nazionale di Fisica Nucleare, Bari, Italy
20Universitat Politecnica de Catalunya, Barcelona, Spain
21University of Notre Dame, Notre Dame, Indiana, USA
22Karlsruhe Institute of Technology, Institut für Kernphysik, Germany
23Aristotle University of Thessaloniki, Greece
24Joint Institute for Nuclear Research, Frank Laboratory of Neutron Physics, Dubna, Russia
25National Technical University of Athens, Greece
26Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Italy
27Centre National de la Recherche Scientifique/IN2P3-CENBG, Bordeaux, France
28Los Alamos National Laboratory, New Mexico, USA
29Tokyo Institute of Technology, Tokyo, Japan
30Oak Ridge National Laboratory, Physics Division, Oak Ridge, Tennessee, USA
31NCSR, Athens, Greece
32EC-JRC-IRMM, Geel, Belgium
33Faculty of Physics, University of Vienna, Austria
34Pôle Universitaire Léonard de Vinci, Paris La Défense, France
35Department of Physics-University of Basel, Switzerland
36ENEA, Bologna, Italy
37Instituto de Física Corpuscular, CSIC-Universidad de Valencia, Spain
Received 29 January 2010; published 27 April 2010
The (n,γ) cross section of 197Au has been measured at n_TOF in the resolved resonance region, up to 5 keV, with the aim of improving the accuracy in an energy range where it is not yet considered standard. The measurements were performed with two different experimental setup and detection techniques, the total energy method based on C6D6 detectors, and the total absorption calorimetry based on a 4π BaF2 array. By comparing the data collected with the two techniques, two accurate sets of neutron-capture yields have been obtained, which could be the basis for a new evaluation leading to an extended cross-section standard. Overall good agreement is found between the n_TOF results and evaluated cross sections, with some significant exceptions for small resonances. A few resonances not included in the existing databases have also been observed.
© 2010 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevC.81.044616
DOI:
10.1103/PhysRevC.81.044616
PACS:
25.40.Ny, 25.40.Lw, 29.30.Hs, 27.80.+w
*Corresponding author: c.domingopardo@gsi.de †Deceased.
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