以四氟化锗为介质离心分离^(72)Ge同位素技术研究  

Technical Study on Centrifugal Separation of^(72)Ge Isotope with Germanium Tetrafluoride as Processing Gas

作　　者：孙启明 周明胜[1] 潘建雄 孙旺 姜东君[1] SUN Qiming;ZHOU Mingsheng;PAN Jianxiong;SUN Wang;JIANG Dongjun(Department of Engineering Physics,Tsinghua University,Beijing 100084,China)

机构地区：[1]清华大学工程物理系,北京100084

出　　处：《同位素》2021年第5期475-479,I0003,共6页Journal of Isotopes

摘　　要：为研究气体离心法分离^(72)Ge同位素的技术,以四氟化锗(GeF 4)为分离介质,通过理论计算,探索通过短级联浓缩法生产^(72)Ge的可能性。计算结果表明,使用相对丰度匹配级联(matched abundance ratio cascade,MARC)模型,两次分离后可以得到丰度高于55%的^(72)Ge。在实验室现有的离心级联上,采用21级阶梯级联的结构,通过调整级联内部工况和外参量,对级联分离性能进行优化。经过两次分离实验后,最终得到^(72)Ge丰度高于60%的产品。In this paper,germanium tetrafluoride(GeF 4)is used as the separation medium to carry out a technical study on the separation of^(72)Ge isotopes by gas centrifugation.First,through theoretical calculations,explore the possibility of producing^(72)Ge through short cascade enrichment.The calculation results show that using the MARC model,^(72)Ge with an abundance of more than 55%can be obtained after two separations.On the existing cascades in the laboratory,a 21-step cascade structure is adopted.The separation performance of the cascade is optimized by adjusting the internal working conditions and external parameters of the cascade.After two separation experiments,a product with^(72)Ge abundance higher than 60%was finally obtained.

关 键 词：^(72)Ge同位素 气体离心法 离心级联 

分 类 号：TL252[核科学技术—核燃料循环与材料]