7Be(n, α) and 7Be(n, p) cross-section measurement for the cosmological lithium problem at the n_TOF facility at CERN

Barbagallo, M. and Colonna, N. and Aberle, O. and Andrzejewski, J. and Audouin, L. and Bécares, V. and Bacak, M. and Balibrea, J. and Barros, S. and Bečvář, F. and Beinrucker, C. and Berthoumieux, E. and Billowes, J. and Bosnar, Damir and Brugger, M. and Caamaño, M. and Calviño, F. and Calviani, M. and Cano-Ott, D. and Cardella, R. and Casanovas, A. and Castelluccio, D. M. and Cerutti, F. and Chen, Y. H. and Chiaveri, E. and Cortés, G. and Cortés-Giraldo, M. A. and Cosentino, L. and Damone, L. A. and Diakaki, M. and Domingo-Pardo, C. and Dressler, R. and Dupont, E. and Durán, I. and Fernández-Domínguez, B. and Ferrari, A. and Ferreira, P. and Finocchiaro, P. and Furman, V. and Göbel, K. and García, A. R. and Gawlik, A. and Glodariu, T. and Gonçalves, I. F. and González, E. and Goverdovski, A. and Griesmayer, E. and Guerrero, C. and Gunsing, F. and Harada, H. and Heftrich, T. and Heinitz, S. and Heyse, J. and Jenkins, D. G. and Jericha, E. and Käppeler, F. and Kadi, Y. and Katabuchi, T. and Kavrigin, P. and Ketlerov, V. and Khryachkov, V. and Kimura, A. and Kivel, N. and Kokkoris, M. and Krtička, M. and Leal-Cidoncha, E. and Lederer, C. and Leeb, H. and Lerendegui-Marco, J. and Lo Meo, S. and Lonsdale, S. J. and Losito, R. and Macina, D. and Marganiec, J. and Martínez, T. and Massimi, C. and Mastinu, P. and Mastromarco, M. and Matteucci, F. and Maugeri, E. A. and Mendoza, E. and Mengoni, A. and Milazzo, P. M. and Mingrone, F. and Mirea, M. and Montesano, S. and Musumarra, A. and Nolte, R. and Oprea, A. and Patronis, N. and Pavlik, A. and Perkowski, J. and Porras, J. I. and Praena, J. and Quesada, J. M. and Rajeev, K. and Rauscher, T. and Reifarth, R. and Riego-Perez, A. and Rout, P. C. and Rubbia, C. and Ryan, J. A. and Sabaté-Gilarte, M. and Saxena, A. and Schillebeeckx, P. and Schmidt, S. and Schumann, D. and Sedyshev, P. and Smith, A. G. and Stamatopoulos, A. and Tagliente, G. and Tain, J. L. and Tarifeño-Saldivia, A. and Tassan-Got, L. and Tsinganis, A. and Valenta, S. and Vannini, G. and Variale, V. and Vaz, P. and Ventura, A. and Vlachoudis, V. and Vlastou, R. and Wallner, A. and Warren, S. and Weigand, M. and Weiss, C. and Wolf, C. and Woods, P. J. and Wright, T. and Žugec, Petar (n_TOF Collaboration) (2017) 7Be(n, α) and 7Be(n, p) cross-section measurement for the cosmological lithium problem at the n_TOF facility at CERN. In: ND 2016: International Conference on Nuclear Data for Science and Technology. EPJ Web of Conferences. No. 146. Art. No. 01012, September 11–16, 2016, Bruges, Belgija.

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Abstract

The Cosmological Lithium Problem refers to the large discrepancy between the abundance of primordial 7Li predicted by the standard theory of Big Bang Nucleosynthesis and the value inferred from the so-called “Spite plateau” in halo stars. A possible explanation for this longstanding puzzle in Nuclear Astrophysics is related to the incorrect estimation of the destruction rate of 7Be, which is responsible for the production of 95% of primordial Lithium. While charged-particle induced reactions have mostly been ruled out, data on the 7Be(n,α) and 7Be(n,p) reactions are scarce or completely missing, so that a large uncertainty still affects the abundance of 7Li predicted by the standard theory of Big Bang Nucleosynthesis. Both reactions have been measured at the n TOF facility at CERN, providing for the first time data in a wide neutron energy range.

Item Type: Conference or Workshop Item (Lecture)
Keywords: n_TOF, CERN, 7Be(n, α), 7Be(n, p), cosmological lithium problem, Big Bang nucleosynthesis
Date: 2017
Subjects: NATURAL SCIENCES > Physics
Additional Information: © The Authors, published by EDP Sciences. This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).
Divisions: Faculty of Science > Department of Physics
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 20 Nov 2017 09:02
Last Modified: 20 Nov 2017 09:02
URI: http://digre.pmf.unizg.hr/id/eprint/5706

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