14C(n,γ)15C反应是核天体物理研究中的关键反应之一,该反应决定了s过程中子平衡是否受中子引发CNO循环的影响,并且根据非标准大爆炸模型，该反应对碳以上的核合成有重大影响。此外，在r过程中微子驱动星风的天体环境中，该反应是r过程早期阶段的关键反应。因此急需14C(n,γ)15C的反应截面来研究上述三个天体环境中的元素产生。此外，15C是著名的中子晕核之一，对15C基态中子ANC的研究有助于增强对原子核晕结构的认识。目前已有理论计算之间有2倍的差别，实验结果之间更是有高达7倍的不同。.本课题将首次采用(7Li,6Li)转移体系研究14C(n,γ)15C反应，使用串列加速器和高精度磁谱仪，精确测量中子转移反应14C(7Li,6Li)15C布居15C基态的角分布，确定15C的中子ANC，研究并理解目前国际上各个理论和实验结果之间高达7倍的不同，最终给出14C(n,γ)15C反应率。

The 14C(n, γ)15C reaction, which is one of the key astrophysical reactions, is of great astrophysical significance. Firstly, the 14C(n,γ)15C reaction determines whether the neutron balance will be impacted by the neutron-induced CNO cycle. In inhomogeneous big bang models the 14C(n,γ)15C reaction plays an important role in the production of heavier nuclei beyond the carbon. Additionally, neutron capture reactions on very light nuclei carry a substantial part of the reaction flow in neutrino driven wind scenarios for the r process. Among these reactions the 14C(n,γ)15C contributes mostly during the early phases. Moreover, 15C is one of the best known one-neutron halo nuclei. The determination of 15C neutron ANC will further our knowledges about halo nuclei. In order to study the production of elements in these astrophysical environments, the cross section of the 14C(n,γ)15C reaction is urgent needed. However, there is a discrepancy of up to a factor of 2 among the theoretical results and a discrepancy of up to 7 among the experimental results..This project will apply the (7Li,6Li) system to the indirect study of the 14C(n,γ)15C reaction. The angular distribution of the 14C(7Li,6Li)15C reaction leading to the ground state in 15C will be measured using tandem accelerator and high-precision magnetic spectrograph. The neutron spectroscopic factor of 15C will be determined and then used to understand the discrepancy of up to a factor of 7 in the preexisting results. The astrophysical S-factors and rate of the 14C(n,γ)15C reaction will be derived finally.