中国先进研究堆辐照生产I-125实验技术研究

结合中国先进研究堆(CARR)辐照环境与实验条件,设计间歇循环法的辐照回路系统。采用天然氙气作为靶气进行首次辐照实验,在物理、热工和辐射安全分析的基础上,制定出相应的辐照实验方案并完成了堆内实验,掌握了间歇循环回路法制备125I的堆内辐照工艺技术,获取了相关辐照特性参数,为辐照生产应用提供了技术支撑。

Combined with the irradiation environment and experimental conditions of China advanced research reactor(CARR),an irradiation circuit system of 125I using intermittent cycle method was designed.Natural xenon gas was adopted as target gas in the initial experiment.Based on neutronics,thermal hydraulics and radiation safety analysis,corresponding irradiation experiment program was developed and the tests were carried out.The in-pile irradiation technologyof 125I production using intermittent cycle method was mastered,important loop operating characteristic parameters and target radiation characteristic data were obtained,which provided technical supports for future production of 125I.