Issue |
EPJ Web Conf.
Volume 239, 2020
ND 2019: International Conference on Nuclear Data for Science and Technology
|
|
---|---|---|
Article Number | 01009 | |
Number of page(s) | 5 | |
Section | Nuclear Reaction Measurements | |
DOI | https://doi.org/10.1051/epjconf/202023901009 | |
Published online | 30 September 2020 |
https://doi.org/10.1051/epjconf/202023901009
Neutron capture cross section measurements of 241Am at the n_TOF facility
1 Horia Hulubei National Institute of Physics and Nuclear Engineering, Romania
2 CEA Irfu, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
3 European Commission, Joint Research Centre, Geel, Retieseweg 111, B-2440 Geel, Belgium
4 European Organization for Nuclear Research (CERN), Switzerland
5 Technische Universität Wien, Austria
6 Centro de Investigaciones Enérgyticas Medioambientales y Tecnológicas (CIEMAT), Spain
7 National Technical University of Athens, Greece
8 DEN/CAD/DER/SPEx/LPE, CEA Cadarache, Saint-Paul-les-Durance 13108, France
9 INFN Laboratori Nazionali del Sud, Catania, Italy
10 Dipartimento di Fisica e Astronomia, Università di Catania, Italy
11 University of Lodz, Poland
12 Institut de Physique Nucléaire, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-Saclay, F-91406 Orsay Cedex, France
13 Instituto de Física Corpuscular, CSIC - Universidad de Valencia, Spain
14 Istituto Nazionale di Fisica Nucleare, Sezione di Bari, Italy
15 Charles University, Prague, Czech Republic
16 University of Manchester, United Kingdom
17 Department of Physics, Faculty of Science, University of Zagreb, Zagreb, Croatia
18 University of York, United Kingdom
19 Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, Italy
20 Dipartimento di Fisica e Geologia, Università di Perugia, Italy
21 University of Santiago de Compostela, Spain
22 Universitat Politècnica de Catalunya, Spain
23 Universidad de Sevilla, Spain
24 Istituto Nazionale di Astrofisica - Osservatorio Astronomico di Teramo, Italy
25 Dipartimento di Fisica, Università degli Studi di Bari, Italy
26 School of Physics and Astronomy, University of Edinburgh, United Kingdom
27 Paul Scherrer Institut (PSI), Villingen, Switzerland
28 University of Ioannina, Greece
29 Joint Institute for Nuclear Research (JINR), Dubna, Russia
30 Goethe University Frankfurt, Germany
31 Instituto Superior Técnico, Lisbon, Portugal
32 Japan Atomic Energy Agency (JAEA), Tokai-mura, Japan
33 Karlsruhe Institute of Technology, Campus North, IKP, 76021 Karlsruhe, Germany
34 Agenzia nazionale per le nuove tecnologie (ENEA), Bologna, Italy
35 Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, Italy
36 Dipartimento di Fisicae Astronomia, Università di Bologna, Italy
37 Istituto Nazionale di Fisica Nucleare, Sezione di Legnaro, Italy
38 Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, Italy
39 Dipartimento di Astronomia, Università di Trieste, Italy
40 Consiglio Nazionale delle Ricerche, Bari, Italy
41 Dipartimento di Fisica e Astronomia, Università di Catania, Italy
42 Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany
43 University of Granada, Spain
44 University of Vienna, Faculty of Physics, Vienna, Austria
45 Bhabha Atomic Research Centre (BARC), India
46 Helmholtz-Zentrum Dresden-Rossendorf, Germany
47 Australian National University, Canberra, Australia
* e-mail: andreea.oprea@nipne.ro
Published online: 30 September 2020
Neutron capture on 241Am plays an important role in the nuclear energy production and also provides valuable information for the improvement of nuclear models and the statistical interpretation of the nuclear properties. A new experiment to measure the 241Am(n, γ) cross section in the thermal region and the first few resonances below 10 eV has been carried out at EAR2 of the n_TOF facility at CERN. Three neutron-insensitive C6D6 detectors have been used to measure the neutron-capture gamma cascade as a function of the neutron time of flight, and then deduce the neutron capture yield. Preliminary results will be presented and compared with previously obtained results at the same facility in EAR1. In EAR1 the gamma-ray background at thermal energies was about 90% of the signal while in EAR2 is up to a 25 factor much more favorable signal to noise ratio. We also extended the low energy limit down to subthermal energies. This measurement will allow a comparison with neutron capture measurements conducted at reactors and using a different experimental technique.
© The Authors, published by EDP Sciences, 2020
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