<sup>6</sup>He(p,γ)<sup>7</sup>Li反应的实验设计与束流准备

⁶He(p,γ)⁷Li反应的实验设计与束流准备

摘要: 在HI-13串列加速器次级束流线上，使用7Li初级束，通过²H(⁷Li,⁶He)³He反应产生了能量为26、32和38 MeV的放射性6He次级束，纯化并准直后，6He次级束流纯度可达99%，强度最大为900 s^-1。使用该次级束可实现对²H(⁶He,⁷Li)n反应的角分布测量，并结合理论计算，间接导出⁶He(p,γ)⁷Li的天体物理S因子和反应率。

Abstract: The 6He secondary beams with the energy of 26, 32 and 38 MeV were produced via the 2H(7Li, 6He)3He reaction on the secondary beam facility at the HI-13 tandem accelerator, Beijing. The intensity of the collimated 6He beam with a purity of 99% is about 900 s-1. The angular distribution of 2H(6He, 7Li)n reaction can be measured using this secondary 6He beam in inverse kinematics, and the astrophysical S-factor and rate of the 6He(p, γ)7Li reaction can be derived.