【摘要】 ²⁵²Cf的规模化制备主要依靠在高通量堆内对靶件进行辐照。辐照生产²⁵²Cf存在转换链复杂、裂变损耗大、成品率低等特点，为提高²⁵²Cf产量，本研究对影响²⁵²Cf产量的因素进行分析，包括中子通量水平、能谱分布、靶核种类、靶件结构等，结果表明，中子通量、能谱分布对²⁵²Cf产量具有显著影响，采用重靶核及环形靶有利于提高超钚核素产量。本研究结果可为高通量堆辐照生产²⁵²Cf方案设计提供参考。更多还原

【Abstract】 The large-scale production of ²⁵²Cf mainly depends on irradiating targets in high flux reactor. The production of ²⁵²Cf has the characteristics of complex conversion chain, more intermediate nuclides and remarkable fission losses of target feedstock,which brings great challenges to further improve the production of ²⁵²Cf. The factors affecting ²⁵²Cf production were analyzed,including neutron flux level,neutron energy spectrum distribution,target type and structure,etc. The study shows that neutron flux and energy spectrum distribution have a significant impact on ²⁵²Cf’s amounts,and the output could be further improved by utilizing target with heavy nuclei or the target in annular shape. The results could provide references for irradiation scheme design of producing²⁵²Cf in high flux reactors.更多还原