D-T中子管照相装置的感生放射性研究

介绍了D-T中子管照相装置的应用及其优势,结合D-T中子管的特性和快中子照相的特征分析了其感生放射性危险性。利用ENDF数据库计算了感生放射性,并依托IAEA关于豁免活度的定义计算方法,提出了风险指数的概念来直观表示核素感生放射性的危险程度。采用计算风险指数、横向比较等方法,对常见的核素、元素、不锈钢的感生放射性风险贡献进行了比较。研究发现元素Mo、Fe、Cu风险较大,铁素体不锈钢16Cr25N的风险较小,在不锈钢的选材上要重点关注Fe、Ni、Mn和Cr的含量。

Study on induced radioactivity of D-T neutron tube radiography device

This article introduces the application and advantages of the D-T neutron tube camera device, and analyzes its induced radioactive hazards in combination with the characteristics of the D-T neutron tube and the characteristics of fast neutron photography. The induced radioactivity was calculated using the ENDF database. Relying on the IAEA’s definition and calculation method of exempt activity, the concept of risk index was put forward to visually express the degree of danger of nuclear induced radioactivity. Using methods such as calculation of risk index and horizontal comparison, the contribution of common nuclides, elements, and stainless steel to induced radioactivity risk were compared. The study found that the elements Mo, Fe, and Cu have greater risks, and the ferritic stainless steel 16Cr25 N has less risks. In the selection of stainless steel, the content of Fe, Ni, Mn and Cr should be paid attention to.