$$^7$$Be(n,$$alpha$$) and $$^7$$Be(n,p) cross-section measurement for the cosmological lithium problem at the n_TOF facility at CERN
リチウム問題解決のためのn_TOFでの$$^7$$Be(n,$$alpha$$), $$^7$$Be(n,p)断面積測定
Barbagallo, M.*; Colonna, N.*; Aberle, O.*; 原田 秀郎 ; 木村 敦; n_TOF Collaboration*; 他125名*
Barbagallo, M.*; Colonna, N.*; Aberle, O.*; Harada, Hideo; Kimura, Atsushi; n_TOF Collaboration*; 125 of others*
The Cosmological Lithium Problem refers to the large discrepancy between the abundance of primordial $$^7$$Li 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 $$^7$$Be, which is responsible for the production of 95% of primordial Lithium. While charged-particle induced reactions have mostly been ruled out, data on the $$^7$$Be(n,$$alpha$$) and $$^7$$Be(n,p) reactions are scarce or completely missing, so that a large uncertainty still affects the abundance of $$^7$$Li 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._1
使用言語 : English
掲載資料名 : EPJ Web of Conferences (Internet)
: 146
ページ数 : p.01012_1 - 01012_4
発行年月 : 2017/09
出版社名 : EDP Sciences
発表会議名 : International Conference on Nuclear Data for Science and Technology (ND 2016)
開催年月 : 2016/09
開催都市 : Bruges
開催国 : Belguim
特許データ :
論文URL :
キーワード : n_TOF facility; $$^7$$Be(n,$$alpha$$); $$^7$$Be(n,p); Cross section; cosmological lithium problem
使用施設 :
広報プレスリリース :
受委託・共同研究相手機関 : n\_TOF国際共同研究
登録番号 : BB20171281
抄録集掲載番号 : 45001175
論文投稿番号 : 19406
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