利用离子注入^(15)N靶研究超低能区^(15)N(p,α)^(12)C核反应

Measurement of the Low-energy Differential Cross Section of the ^(15)N(p,α)^(12)C Reaction

描述了利用离子注入固体靶测量15N(p ,α) 12 C核反应微分截面的实验过程和方法 ,给出了在163keV≤Ec≤ 360keV能区 90°方向上的微分截面测量结果和激发函数曲线 ,并对该反应的基本特征进行了分析和描述。

An implantation Mo 15 N x target is applied for studying 15 N(p,α) 12 C reaction in sub coulomb barrier energy region. The differential cross section and excitation function of 15 N(p,α) 12 C reaction are measured in the energy region between 163 keV and 370 keV at θ lab =90°. The excitation curve grows rapidly from low energy and decreases slowly after the maximum. The maximum of the differential cross section is about 7.15×10 -27 cm 2·sr -1 at E c=335 keV.