46.2MeV/u^(12)C+^(64)Ni、^(58)Ni反应中发射的轻粒子和复杂碎片

Light Particle and Complex Fragments Emission from ^(12)C Induced Reactions on ^(58)Ni, ^(64)Ni at E/A = 46.2 MeV

用光二极管读出的CsI(Tl)闪烁探测器和多叠层硅望远镜,测量了46.2MeV/u ^(12)C引起各种靶^(64)Ni、^(58)Ni、^(12)C、^(197)Au、^(209)Bi反应中所发射的轻粒子和中等质量碎片,这些探测器对轻粒子和中等质量碎片有很好的能量分辨和质量分辨。单举的能谱用运动源模型进行了分析,对各种靶在不同角度的中等质量碎片的产额进行了比较。由单举数据推出同位素产额比随靶质量变化的系统性,讨论了N/Z自由度的平衡。

Energy spectra of light charged particles and complex fragments emitted in the interaction of 46.2MeV/u ^(12)C with different target ^(58)Ni,^(64)Ni, ^(12)C,^(197)Au and ^(209)Bi have been measured by telescopes, consisting of CsI (T1) and surface barrier detector stacks. These telescopes for light charged particles and complex fragments have good energy resolution and mass identification. The inclusive data have been analy- sed within a moving source parametrization. The complex fragment yields from di- fferent targets have been compared at several angles. The systematic variation of deduced isotope yields ratios with different reaction systems is used to detemine the N/Z degree of freedom equilibration of the system achieved.