CERN Accelerating science

Article
Title $^{7}$ Be(n,p)$^{7}$ Li Cross Section Measurement for the Cosmological Lithium Problem at the n $\_$ TOF Facility at CERN
Author(s)

Damone, L A (INFN, Bari ; Bari U. ; Dubna, JINR ; Duisburg-Essen U.) ; Barbagallo, M (INFN, Bari ; CERN) ; Mastromarco, M (INFN, Bari ; CERN) ; Mengoni, A (ENEA, Bologna ; INFN, Bologna) ; Colonna, N (INFN, Bari) ; Cosentino, L (INFN, Catania) ; Maugeri, E A (PSI, Villigen) ; Heinitz, S (PSI, Villigen) ; Schumann, D (PSI, Villigen) ; Dressler, R (PSI, Villigen) ; Käppeler, F (KIT, Karlsruhe) ; Finocchiaro, P (INFN, Catania) ; Andrzejewski, J (Lodz U.) ; Perkowski, J (Lodz U.) ; Gawlik, A (Lodz U.) ; Aberle, O (CERN) ; Altstadt, S (Frankfurt U.) ; Ayranov, M (Luxembourg U.) ; Audouin, L (Orsay, IPN) ; Bacak, M (CERN ; Vienna, Tech. U., Atominst.) ; Balibrea-Correa, J (Madrid, CIEMAT) ; Ballof, J (CERN) ; Bcares, V (Madrid, CIEMAT) ; Bečvař, F (Charles U.) ; Beinrucker, C (Frankfurt U.) ; Bellia, G (INFN, Catania ; Catania U.) ; Bernardes, A P (CERN) ; Berthoumieux, E (IRFU, Saclay) ; Billowes, J (Manchester U.) ; Borge, M J G (CERN) ; Bosnar, D (Zagreb U.) ; Brown, A (York U., England) ; Brugger, M (CERN) ; Busso, Maurizio (INFN, Perugia ; Perugia U.) ; Caamaño, M (Santiago de Compostela U.) ; Calviño, F (Barcelona, Polytechnic U.) ; Calviani, M (CERN) ; Cano-Ott, D (Madrid, CIEMAT) ; Cardella, R (CERN ; INFN, Catania) ; Casanovas, A (Barcelona, Polytechnic U.) ; Castelluccio, D M (ENEA, Bologna) ; Catherall, R (CERN) ; Cerutti, F (CERN) ; Chen, Y H (Orsay, IPN) ; Chiaveri, E (CERN) ; Corts, G (Barcelona, Polytechnic U.) ; Cortès-Giraldo, M A (Seville U.) ; Cristallo, Sergio (INFN, Perugia ; Collurania Teramo Observ.) ; Diakaki, M (Natl. Tech. U., Athens) ; Dietz, M (Edinburgh U.) ; Domingo-Pardo, C (Valencia U., IFIC) ; Dorsival, A (CERN) ; Dupont, E (IRFU, Saclay) ; Durán, I (Santiago de Compostela U.) ; Fernàndez-Dominguez, B (Santiago de Compostela U.) ; Ferrari, A (CERN) ; Ferreira, P (Lisbon, IST) ; Furman, W (Lisbon, IST) ; Ganesan, S (Bhabha Atomic Res. Ctr.) ; Garca-Rios, A (Madrid, CIEMAT) ; Gilardoni, S (CERN) ; Glodariu, T (Bucharest, IFIN-HH) ; Göbel, Kathrin (Frankfurt U.) ; Gonçalves, I F (Lisbon, IST) ; Gonzalez-Romero, E (Madrid, CIEMAT) ; Goodacre, T D (CERN) ; Griesmayer, E (Vienna, Tech. U., Atominst.) ; Guerrero, C (Seville U.) ; Gunsing, F (IRFU, Saclay) ; Harada, H (JAERI, Tokai) ; Heftrich, Tanja (Frankfurt U.) ; Heyse, J (Euratom, Geel) ; Jenkins, D G (York U., England) ; Jericha, E (Vienna, Tech. U., Atominst.) ; Johnston, K (CERN) ; Kadi, Y (CERN) ; Kalamara, A (Natl. Tech. U., Athens) ; Katabuchi, T (Tokyo Inst. Tech.) ; Kavrigin, P (Vienna, Tech. U., Atominst.) ; Kimura, A (JAERI, Tokai) ; Kivel, N (PSI, Villigen) ; Kohester, U (Laue-Langevin Inst.) ; Kokkoris, M (Natl. Tech. U., Athens) ; Krtička, M (Charles U.) ; Kurtulgil, Deniz (Frankfurt U.) ; Leal-Cidoncha, E (Santiago de Compostela U.) ; Lederer-Woods, Claudia (Edinburgh U.) ; Leeb, H (Vienna, Tech. U., Atominst.) ; Lerendegui-Marco, J (Seville U.) ; Lo Meo, S (INFN, Bologna) ; Lonsdale, S J (Edinburgh U.) ; Losito, R (CERN) ; Macina, D (CERN) ; Marganiec, J (Lodz U.) ; Marsh, B (CERN) ; Martínez, T (Madrid, CIEMAT) ; Martins Correia, J G (CERN ; Lisbon, IST) ; Masi, A (CERN) ; Massimi, C (INFN, Bologna ; Bologna U., Dept. Astron.) ; Mastinu, P (INFN, Legnaro) ; Matteucci, F (INFN, Trieste ; Trieste U., Astron. Dept.) ; Mazzone, A (INFN, Bari ; Bari U.) ; Mendoza, E (Madrid, CIEMAT) ; Milazzo, P M (INFN, Trieste) ; Mingrone, Federica (CERN) ; Mirea, M (Bucharest, IFIN-HH) ; Musumarra, A (INFN, Catania ; Catania U.) ; Negret, A (Bucharest, IFIN-HH) ; Nolte, R (Braunschweig, Phys. Tech. Bund.) ; Oprea, A (Bucharest, IFIN-HH) ; Patronis, N (Ioannina U.) ; Pavlik, A (Vienna U.) ; Piersanti, Luciano (INFN, Perugia ; Collurania Teramo Observ.) ; Piscopo, M (INFN, Catania) ; Plompen, A (Euratom, Geel) ; Porras, I (Granada U.) ; Praena, J (Seville U. ; Granada U.) ; Quesada, J M (Seville U.) ; Radeck, D (Braunschweig, Phys. Tech. Bund.) ; Rajeev, K (Bhabha Atomic Res. Ctr.) ; Rauscher, Thomas (Hertfordshire U.) ; Reifarth, René (Frankfurt U.) ; Riego-Perez, A (Barcelona, Polytechnic U.) ; Rothe, S (Manchester U.) ; Rout, P (Bhabha Atomic Res. Ctr.) ; Rubbia, C (CERN) ; Ryan, J (Manchester U.) ; Sabaté-Gilarte, M (CERN ; Seville U.) ; Saxena, A (Bhabha Atomic Res. Ctr.) ; Schell, J (CERN ; Manchester U.) ; Schillebeeckx, P (Euratom, Geel) ; Schmidt, S (Frankfurt U.) ; Sedyshev, P (Lisbon, IST) ; Seiffert, C (CERN) ; Smith, A G (Manchester U.) ; Sosnin, N V (Manchester U.) ; Stamatopoulos, A (Natl. Tech. U., Athens) ; Stora, T (CERN) ; Tagliente, G (INFN, Bari) ; Tain, J L (Valencia U., IFIC) ; Tarifeño-Saldivia, A (Barcelona, Polytechnic U. ; Valencia U., IFIC) ; Tassan-Got, L (Orsay, IPN) ; Tsinganis, A (CERN) ; Valenta, S (Charles U.) ; Vannini, G (INFN, Bologna ; Bologna U., Dept. Astron.) ; Variale, V (INFN, Bari) ; Vaz, P (Lisbon, IST) ; Ventura, A (INFN, Bologna) ; Vlachoudis, V (CERN) ; Vlastou, R (Natl. Tech. U., Athens) ; Wallner, A (Vienna U. ; Australian Natl. U., Canberra) ; Warren, S (Manchester U.) ; Weigand, Mario (Frankfurt U.) ; Weiß, C (CERN) ; Wolf, C (Frankfurt U.) ; Woods, P J (Edinburgh U.) ; Wright, T (Manchester U.) ; Žugec, P (Zagreb U.)

Publication 2019
Number of pages 8
In: Springer Proc. Phys. 219 (2019) 25-32
In: Nuclei in the Cosmos XV (NIC XV), Assergi, Italy, 24 - 29 Jun 2018, pp.25-32
DOI 10.1007/978-3-030-13876-9_5
Subject category Nuclear Physics - Experiment
Accelerator/Facility, Experiment CERN PS ; nTOF
Abstract One of the most puzzling problems in Nuclear Astrophysics is the “Cosmological Lithium Problem”, i.e the discrepancy between the primordial abundance of$^{7}$ Li observed in metal poor halo stars (Asplund et al. in Astrophys J 644:229–259, 2006, [1]), and the one predicted by Big Bang Nucleosynthesis (BBN). One of the reactions that could have an impact on the problem is$^{7}$ Be(n,p)$^{7}$ Li. Despite of the importance of this reaction in BBN, the cross-section has never been directly measured at the energies of interest for BBN. Taking advantage of the innovative features of the second experimental area at the n $_$ TOF facility at CERN (Sabate-Gilarte et al. in Eur Phys J A 53:210, 2017, [2], Weiss et al. in NIMA 799:90, 2015, [3]), an accurate measurement of$^{7}$ Be(n,p) cross section has been recently performed at n $_$ TOF, with a pure$^{7}$ Be target produced by implantation of a$^{7}$ Be beam at ISOLDE. The mesurement started in April 2016 and lasted for two months. The experimental procedure, the setup used in the measurement and the results obtained so far will be here presented.
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