7Be(n, α) and 7Be(n, p) cross-section measurement for the cosmological lithium problem at the n_TOF facility at CERN (CROSBI ID 652777)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Barbagallo, M. ; ... ; Bosnar, Damir ; ... ; Žugec, Petar
engleski
7Be(n, α) and 7Be(n, p) cross-section measurement for the cosmological lithium problem at the n_TOF facility at CERN
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.
n_TOF, CERN, 7Be(n, α), 7Be(n, p), cosmological lithium problem, Big Bang nucleosynthesis
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Podaci o prilogu
01012-1-01012-4.
2017.
objavljeno
Podaci o matičnoj publikaciji
EPJ Web of Conferences 146
A. Plompen, F.-J. Hambsch, P. Schillebeeckx, W. Mondelaers, J. Heyse, S. Kopecky, P. Siegler, S. Oberstedt
978-2-7598-9020-0
2100-014X
Podaci o skupu
Nepoznat skup
predavanje
29.02.1904-29.02.2096