Experimental study of the Γp1/Γp0 ratios of resonance states in Be8 for deducing the Be7(n,p1)Li*7 reaction rate relevant to the cosmological lithium problem
Experimental study of the Γp1/Γp0 ratios of resonance states in Be8 for deducing the Be7(n,p1)Li*7 reaction rate relevant to the cosmological lithium problem
复制标题
Be8 共振态 Гp1/Гp0 比的实验研究，推导与宇宙学锂问题相关的 Be7(n,p1)Li*7 反应速率
DOI：
10.1103/physrevc.103.015801
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发表时间：
2021
影响因子：
3.1
通讯作者：
Kawabata T.
中科院分区：
文献类型：
--
作者：
Iwasa N.;Ishikawa S.;Kubono S.;Sakakibara T.;Kominato K.;Nishio K.;Matsuda M.;Hirose K.;Makii H.;Orlandi R.;Asada K.;Guru D.;Nishimura S.;Hayakawa S.;Kawabata T.
在18.91-20.1MeV的能量范围内研究了该反应，从反应截面中导出了与大爆炸核合成中的破坏有关的反应速率所必需的共振态/共振态的分支比。分别测量了从基态到第一激发态的衰变质子。推导出19.235-MeV态的/比值为%。19.86-和20.1-MeV的状态被发现主要衰变到第一激发态和基态，分别。
Thereaction was studied atMeV to deduce the branching ratios of/of resonant states at 18.91–20.1MeV in, which are necessary to extract thereaction rate relevant to thedestruction in the big bang nucleosynthesis, from thereaction cross section. The decay protons fromto the ground and first excited states inwere well-separately measured. The/ratio of the 19.235-MeV state was deduced to be%. The 19.86- and 20.1-MeV states were found to decay dominantly into the first excited and ground states of, respectively.