摘要
介绍了一种弧形靶框夹芯208Pb靶的制备工艺,包括核靶的制备装置和制备方法、核靶厚度和均匀性的控制和测量方法,并对结果进行了讨论。制备采用旋转蒸镀法,该法可以大大提高材料的利用率。所制靶的结构为30μg/cm2C+361μg/cm2208Pb+15μg/cm2C,同一次所制的靶平均厚度为361μg/cm2,不均匀性小于9.8%。其性能能够很好地满足超重核实验研究的要求。
Preparation process of the isotope ^208Pb target with the required size, thickness and configuration was introduced. The target had a sandwich structure of C/^208Pb/C. The thickness and uniformity of ^208Pb target were controlled and measured. Through rotating the substrate, the utilization efficiency of ^208pb was considerably increased. The prepared target has a structure of 30 μg/cm^2 C ＋ 361 μg/cm^2 ^208Pb ＋ 15μg/cm^2 C, and the average thickness of the target that was prepared in the same procedure is 361μg/cm^2. The test results show that the inhomogeneity of the target is less than 9.8%. This can meet the requirements of the experiment in the super-heavy element study.
出处
《核技术》
EI
CAS
CSCD
北大核心
2005年第11期837-840,共4页
Nuclear Techniques
基金
中国科学院"百人计划"基金
科技部重大项目前期研究专项基金(2001CCB01200)项目
国家重点基础研究发展规划(G2000077401)项目资助
关键词
同位素^208pb靶
旋转蒸镀法
夹芯
C膜
Isotope ^208Pb target, Rotation evaporation, Sandwich structure, C film
