The $^{7}$Be($\boldsymbol{n,p}$)$^{7}$Li reaction and the Cosmological Lithium Problem: measurement of the cross section in a wide energy range at n\_TOF (CERN)
- Damone, L.
- Barbagallo, M.
- Mastromarco, M.
- Mengoni, A.
- Cosentino, L.
- Maugeri, E.
- Heinitz, S.
- Schumann, D.
- Dressler, R.
- Käppeler, F.
- Colonna, N.
- Finocchiaro, P.
- Andrzejewski, J.
- Perkowski, J.
- Gawlik, A.
- Aberle, O.
- Altstadt, S.
- Ayranov, M.
- Audouin, L.
- Bacak, M.
- Balibrea-Correa, J.
- Ballof, J.
- Bécares, V.
- Bečvář, F.
- Beinrucker, C.
- Bellia, G.
- Bernardes, A.P.
- Berthoumieux, E.
- Billowes, J.
- Borge, M.J.G.
- Bosnar, D.
- Brown, A.
- Brugger, M.
- Busso, M.
- Caamaño, M.
- Calviño, F.
- Calviani, M.
- Cano-Ott, D.
- Cardella, R.
- Casanovas, A.
- Castelluccio, D.M.
- Catherall, R.
- Cerutti, F.
- Chen, Y.H.
- Chiaveri, E.
- Cortés, G.
- Cortés-Giraldo, M.A.
- Cristallo, S.
- Diakaki, M.
- Dietz, M.
- Domingo-Pardo, C.
- Dorsival, A.
- Dupont, E.
- Duran, I.
- Fernandez-Dominguez, B.
- Ferrari, A.
- Ferreira, P.
- Furman, W.
- Ganesan, S.
- García-Rios, A.
- Gilardoni, S.
- Glodariu, T.
- Göbel, K.
- Gonçalves, I.F.
- González-Romero, E.
- Goodacre, T.D.
- Griesmayer, E.
- Guerrero, C.
- Gunsing, F.
- Harada, H.
- Heftrich, T.
- Heyse, J.
- Jenkins, D.G.
- Jericha, E.
- Johnston, K.
- Kadi, Y.
- Kalamara, A.
- Katabuchi, T.
- Kavrigin, P.
- Kimura, A.
- Kivel, N.
- Kohester, U.
- Kokkoris, M.
- Krtička, M.
- Kurtulgil, D.
- Leal-Cidoncha, E.
- Lederer-Woods, C.
- Leeb, H.
- Lerendegui-Marco, J.
- Lo Meo, S.
- Lonsdale, S.J.
- Losito, R.
- Macina, D.
- Marganiec, J.
- Marsh, B.
- Martínez, T.
- Martins Correia, J.G.
- Masi, A.
- Massimi, C.
- Mastinu, P.
- Matteucci, F.
- Mazzone, A.
- Mendoza, E.
- Milazzo, P.M.
- Mingrone, F.
- Mirea, M.
- Musumarra, A.
- Negret, A.
- Nolte, R.
- Oprea, A.
- Patronis, N.
- Pavlik, A.
- Piersanti, L.
- Piscopo, M.
- Plompen, A.
- Porras, I.
- Praena, J.
- Quesada, J.M.
- Radeck, D.
- Rajeev, K.
- Rauscher, T.
- Reifarth, R.
- Riego-Perez, A.
- Rothe, S.
- Rout, P.
- Rubbia, C.
- Ryan, J.
- Sabaté-Gilarte, M.
- Saxena, A.
- Schell, J.
- Schillebeeckx, P.
- Schmidt, S.
- Sedyshev, P.
- Seiffert, C.
- Smith, A.G.
- Sosnin, N.V.
- Stamatopoulos, A.
- Stora, T.
- Tagliente, G.
- Tain, J.L.
- Tarifeño-Saldivia, A.
- Tassan-Got, L.
- Tsinganis, A.
- Valenta, S.
- Vannini, G.
- Variale, V.
- Vaz, P.
- Ventura, A.
- Vlachoudis, V.
- Vlastou, R.
- Wallner, A.
- Warren, S.
- Weigand, M.
- Weiß, C.
- Wolf, C.
- Woods, P.J.
- Wright, T.
- Žugec, P.
DOIAbstract
We report on the measurement of the Be7(n,p)Li7 cross section from thermal to approximately 325 keV neutron energy, performed in the high-flux experimental area (EAR2) of the n_TOF facility at CERN. This reaction plays a key role in the lithium yield of the big bang nucleosynthesis (BBN) for standard cosmology. The only two previous time-of-flight measurements performed on this reaction did not cover the energy window of interest for BBN, and they showed a large discrepancy between each other. The measurement was performed with a Si telescope and a high-purity sample produced by implantation of a Be7 ion beam at the ISOLDE facility at CERN. While a significantly higher cross section is found at low energy, relative to current evaluations, i...
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