Measurement and analysis of the Am-243 neutron capture cross section at the n_TOF facility at CERN

Autor(en)

E. Mendoza, D. Cano-Ott, C. Guerrero, E. Berthoumieux, U. Abbondanno, G. Aerts, F. Alvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulos, L. Audouin, G. Badurek, J. Balibrea, P. Baumann, F. Becvar, F. Belloni, F. Calvino, M. Calviani, R. Capote, C. Carrapico, A. Carrillo de Albornoz, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Cortes, A. Couture, J. Cox, M. Dahlfors, S. David, I. Dillmann, R. Dolfini, C. Domingo-Pardo, W. Dridi, I. Duran, C. Eleftheriadis, L. Ferrant, A. Ferrari, R. Ferreira-Marques, L. Fitzpatrick, H. Frais-Koelbl, K. Fujii, W. Furman, I. Goncalves, E. Gonzalez-Romero, A. Goverdovski, F. Gramegna, E. Griesmayer, F. Gunsing, B. Haas, R. Haight, M. Heil, A. Herrera-Martinez, M. Igashira, S. Isaev, E. Jericha, F. Kaeppeler, Y. Kadi, D. Karadimos, D. Karamanis, V. Ketlerov, M. Kerveno, P. Koehler, V. Konovalov, E. Kossionides, M. Krticka, C. Lampoudis, H. Leeb, A. Lindote, S. Lo Meo, I. Lopes, R. Lossito, M. Lozano, S. Lukic, J. Marganiec, L. Marques, S. Marrone, T. Martinez, C. Massimi, P. Mastinu, A. Mengoni, P. M. Milazzo, C. Moreau, M. Mosconi, F. Neves, H. Oberhummer, S. O'Brien, M. Oshima, J. Pancin, C. Papachristodoulou, C. Papadopoulos, C. Paradela, N. Patronis, Andreas 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, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, C. Santos, L. Sarchiapone, I. Savvidis, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan-Got, L. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M. C. Vicente, V. Vlachoudis, R. Vlastou, F. Voss, S. Walter, H. Wendler, M. Wiescher, K. Wisshak

Abstrakt

Background: The design of new nuclear reactors and

transmutation devices requires to reduce the present neutron cross

section uncertainties of minor actinides.

Purpose: Improvement of the Am243(n,γ) cross section uncertainty.

Method: The Am243(n,γ) cross section has been measured at the n_TOF facility at CERN with a BaF2 total absorption calorimeter, in the energy range between 0.7 eV and 2.5 keV.

Results: The Am243(n,γ)

cross section has been successfully measured in the mentioned energy

range. The resolved resonance region has been extended from 250 eV up to

400 eV. In the unresolved resonance region our results are compatible

with one of the two incompatible capture data sets available below 2.5

keV. The data available in EXFOR and in the literature have been used to

perform a simple analysis above 2.5 keV.

Conclusions: The results of this measurement contribute to reduce the Am243(n,γ)

cross section uncertainty and suggest that this cross section is

underestimated up to 25% in the neutron energy range between 50 eV and a

few keV in the present evaluated data libraries.

Organisation(en)

Isotopenphysik

Externe Organisation(en)

Centro de Investigaciones Energeticas Medioambientales y Tecnológica, European Organization for Nuclear Research (CERN), IRFU CEA-Saclay laboratory , Istituto Nazionale di Fisica Nucleare (INFN), Roma, University of Lodz, University of Ioannina, Centre National De La Recherche Scientifique (CNRS), Technische Universität Wien, Charles University Prague, International Atomic Energy Agency (IAEA), Universidad de Sevilla, Universidade de Coimbra, Universitat Politècnica de Catalunya, University of Notre Dame, Università degli studi di Pavia, Instituto de Física Corpuscular (IFIC), Universidade de Santiago de Compostela (USC), Aristotle University of Thessaloniki, Joint Institute for Nuclear Research, Institute of Physics and Power Engineering (IPPE), Los Alamos National Laboratory, Tokyo Institute of Technology (TIT), National Centre for Scientific Research Demokritos (NCSR), Università degli Studi di Salerno, Università di Bologna, Japan Atomic Energy Agency, National Technical University of Athens (NTUA), European Commission Joint Research Centre, University of Hertfordshire, Universität Basel, Centre National de la Recherche Scientifique (CNRS), Strasbourg , Universidad Politécnica de Madrid, Università degli Studi di Padova, Instituto Superior Técnico, Karlsruher Institut für Technologie, Fachhochschule Wiener Neustadt, Oak Ridge National Laboratory , Pôle universitaire Léonard-de-Vinci

Journal

Physical Review C

Band

90

Anzahl der Seiten

16

ISSN

0556-2813

DOI

https://doi.org/10.1103/PhysRevC.90.034608

Publikationsdatum

09-2014

Peer-reviewed

Ja

ÖFOS 2012

103014 Kernphysik

Schlagwörter

ASJC Scopus Sachgebiete

Nuclear and High Energy Physics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/54dbeb36-6e02-4e4f-a5f1-e914f16000a6