摘要
报道了采用 70 0℃铀床、77K低温活性炭柱提取高纯 3He,之后采用氢同位素稀释法除去 3He中微量氚的研究结果。 70 0℃流通式铀床和 77K低温活性炭柱吸附方法 ,能快速除去 3He中杂质组分 ,得到纯度大于 99.99%的高纯 3He;氢同位素稀释法能够将 3He中 3H摩尔分数降到低于 3.5×10 -10 %。与其他方法比较 ,氢同位素稀释法工艺过程更加简单 。
He cleanup methods using uranium bed and active carbon absorption and then using hydrogen isotope dilution to elimination trace tritium are introduced. The results show that both U bed and active carbon absorption column are effective in 3He extraction. 3He gas with purity 99.99% is obtained using these methods and 3H mole fraction in 3He is reduced dowm to 3.5×10 -10 % using hydrogen isotope dilution. Comparing with the other methods, the U bed and hydrogen isotope dilution methods are more effective and simple in 3He cleanup and trace tritium elimination.
出处
《同位素》
CAS
2000年第2期78-82,共5页
Journal of Isotopes
基金
中国工程物理研究院基金资助项目!(980568)
关键词
氢同位素稀释法
氦^3
放射性同位素
提取工艺
~3He
cleanup
active carbon absorption
uranium bed
hydrogen isotope dilution method