7Be(n,p) cross section measurement for the Cosmological Lithium Problem at the n_TOF facility at CERN

被引：0

作者：

Damone, Lucia Anna ^{[1
]}

Colonna, N. ^{[1
]}

Barbagallo, M. ^{[1
,2
]}

Mastromarco, M. ^{[1
]}

Andrzejewski, J. ^{[3
]}

Finocchiaro, P. ^{[4
]}

Cosentino, L. ^{[4
]}

机构：

[1] INFN, Bari, Italy

[2] CERN, Geneva, Switzerland

[3] Univ Lodz, Lodz, Poland

[4] INFN, Lab Nazl Sud, Catania, Italy

来源：

9TH EUROPEAN SUMMER SCHOOL ON EXPERIMENTAL NUCLEAR ASTROPHYSICS | 2018年 / 184卷

关键词：

D O I：

10.1051/epjconf/201818402004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

One of the most puzzling problems in Nuclear Astrophysics is the "Cosmological Lithium Problem", i.e the discrepancy between the primordial abundance of Li-7 observed in metal poor halo stars [1], and the one predicted by Big Bang Nucleosynthesis (BBN). One of the reactions that could have an impact on the problem is Be-7(n,p)Li-7. 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, an accurate measurement of Be-7(n,p) cross section has been recently performed at n_TOF, with a pure Be-7 target produced by implantation of a Be-7 beam at ISOLDE. The experimental procedure, the setup used in the measurement and the results obtained so far will be here presented.

引用

页数：5

共 50 条

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