<sup>22</sup>Na次级束的产生与应用

²²Na次级束的产生与应用

摘要: 在日本东京大学核研究中心的放射性离子束分离器上，利用逆运动学反应¹H(²²Ne，²²Na)n产生了²²Na次级束。经分离器电磁系统的分离提纯后，获得了能量为（78.3±1.0） MeV的²²Na次级束。实验靶站处次级束的强度达2.5×10⁵ s^-1，其中²²Na的纯度好于90%。²²Na次级束已应用于与核天体物理Ne丰度异常问题相关的²²Na+α共振散射实验研究。

Abstract: The ²²Na secondary beam was produced via the ¹H(²²Ne, ²²Na)n reaction at the CNS Radioactive Ion Beam separator (CRIB) in University of Tokyo. After the separation and purification with the electric-magnetic system of the separator, a high-quality ²²Na secondary beam was delivered with energy of (78.3±1.0) MeV, intensity of about 2.5×10⁵ s^-1 and purity better than 90%. The ²²Na secondary beam has been used for the study of the resonant scattering of ²²Na+α, which is related to the neon extraordinary problem in nuclear astrophysics.