Publikationen

(n,cp) reactions study at the n_TOF facility at CERN

Autor(en)
M. Barbagallo, O. Aberle, V. Alcayne, J. Andrzejewski, L. Audouin, V. Bécares, V. Babiano-Suarez, M. Bacak, Th Benedikt, S. Bennett, E. Berthoumieux, J. Billowes, D. Bosnar, A. Brown, M. Busso, M. Caamaño, L. Caballero-Ontanaya, F. Calviño, M. Calviani, D. Cano-Ott, A. Casanovas, F. Cerutti, E. Chiaveri, N. Colonna, G. Cortés, M. A. Cortés-Giraldo, L. Cosentino, S. Cristallo, L. A. Damone, P. J. Davies, M. Dietz, C. Domingo-Pardo, R. Dressler, Q. Ducasse, E. Dupont, I. Durán, Z. Eleme, B. Fernández-Domínguez, A. Ferrari, P. Finocchiaro, V. Furman, K. Göbel, A. Gawlik, S. Gilardoni, I. F. Gonçalves, E. González-Romero, C. Guerrero, F. Gunsing, S. Heinitz, J. Heyse, D. G. Jenkins, A. Junghans, F. Käppeler, Y. Kadi, A. Kimura, I. Knapova, M. Kokkoris, Y. Kopatch, M. Krtička, D. Kurtulgil, I. Ladarescu, C. Lederer-Woods, S. J. Lonsdale, D. Macina, A. Manna, T. Martínez, A. Masi, C. Massimi, P. Mastinu, M. Mastromarco, E. A. Maugeri, A. Mazzone, E. Mendoza, A. Mengoni, V. Michalopoulou, P. M. Milazzo, F. Mingrone, J. Moreno-Soto, A. Musumarra, A. Negret, F. Ogállar, A. Oprea, N. Patronis, A. Pavlik, J. Perkowski, L. Persanti, C. Petrone, E. Pirovano, I. Porras, J. Praena, J. M. Quesada, D. Ramos-Doval, T. Rauscher, R. Reifarth, D. Rochman, M. Sabaté-Gilarte, A. Saxena, P. Schillebeeckx, D. Schumann, A. Sekhar, A. G. Smith, N. V. Sosnin, P. Sprung, A. Stamatopoulos, G. Tagliente, J. L. Tain, A. Tarifeño-Saldivia, L. Tassan-Got, A. Tsinganis, J. Ulrich, S. Urlass, S. Valenta, G. Vannini, V. Variale, P. Vaz, A. Ventura, D. Vescovi, V. Vlachoudis, R. Vlastou, A. Wallner, P. J. Woods, T. Wright, P. Žugec
Abstrakt

The Big Bang Nucleosynthesis describes the production of the lightest nuclides from deuterium to Li at the early stages of the Universe. While a general good agreement is found for most of the isotopes involved in the synthesis, a serious discrepancy between the predicted abundance of 7Li and the related experimental observations is still present. This discrepancy has been referred since several decades as Cosmological Lithium Problem. In one last attempt to find nuclear solutions to this longstanding conundrum, the 7Be(n,α)4He and 7Be(n,p)7Li reactions, that affect predominantly the production of 7Li via the destruction of his parent nucleus 7Be, have been studied. Here we present the 7Be(n,α)4He and 7Be(n,p)7Li reaction cross-section measurements performed at the high-resolution n_TOF facility using the time-of-flight technique and high purity samples. The result of the experiments definitely rules out neutron induced reactions as a solution to the puzzle, thus indicating that explanations have to be sought out in other Physics scenarios.

Organisation(en)
Isotopenphysik
Externe Organisation(en)
European Organization for Nuclear Research (CERN), Istituto Nazionale di Fisica Nucleare, Roma, Centro de Investigaciones Energeticas Medioambientales y Tecnológica, University of Lodz, Centre National De La Recherche Scientifique (CNRS), Universitat de València, Technische Universität Wien, Université Paris-Saclay, Johann Wolfgang Goethe-Universität Frankfurt am Main, University of Manchester, University of Zagreb, York University, Sezione di Perugia, Università degli Studi di Perugia, Universidade de Santiago de Compostela (USC), Universitat Politècnica de Catalunya, Universidad de Sevilla, Istituto Nazionale di Astrofisica - Osservatorio Astronomico di Teramo, Università degli Studi di Bari, University of Edinburgh, Paul Scherrer Institute, Physikalisch-Technische Bundesanstalt (PTB), University of Ioannina, Dubna, Associação EURATOM/IST, Joint Research Centre (JRC), European Commission, Joint Research Centre, Forschungszentrum Dresden Rossendorf (FZD), Karlsruher Institut für Technologie, Japan Atomic Energy Agency, Charles University Prague, National Technical University of Athens (NTUA), Sezione di Bologna, Università degli Studi di Catania, Università degli Studi di Bologna, Istituto Nazionale di Fisica Nucleare, Perugia, Sezione di Legnaro, Consiglio Nazionale delle Ricerche (CNR), Padua, ENEA Centro Ricerche Bologna, Sezione di Trieste, Università degli Studi di Trieste, Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN HH), Universidad de Granada, Universität Basel, Centre for Astrophysics Research, University of Hertfordshire, Bhabha Atomic Research Centre, Australian National University
Seiten
259-264
Anzahl der Seiten
6
DOI
https://doi.org/10.23727/CERN-Proceedings-2019-001
Publikationsdatum
2019
ÖFOS 2012
103014 Kernphysik
ASJC Scopus Sachgebiete
Energy Engineering and Power Technology, Nuclear Energy and Engineering, Nuclear and High Energy Physics
Link zum Portal
https://ucris.univie.ac.at/portal/de/publications/ncp-reactions-study-at-the-ntof-facility-at-cern(b6764bf8-7ca2-4758-bc92-fb376942f635).html