锑酸消除空气中的氚

采用锑酸作为消气材料,锑酸与钯黑共同压制成消氚电极,考察在82.2L的系统中电压、消氚圆片大小、氚初始浓度、空气湿度等因素对消除空气中氚的速度的影响以及消氚的实际应用效果。结果表明:空气气氛中,在达到107Bq/L量级的氚量下,当消氚片面积达到0.025m2左右,消氚效率可达80%~90%,加电压不影响消氚效率。同样的消氚片,在N2气氛中消氚试验结果与在空气气氛中相似,均能达到90%左右,表明氚是以质子或自由基形态通过钯黑传导至锑酸,再被锑酸吸收。

Removing tritium from air with antimonic acid

Antimonic acid and palladium are pressed into electrode to getter the tritium from air in the 82. 2 litre system. The influ-ences of the voltage, the size of the electrode, the tritium consistency, the relative humidity in the atmosphere to the speed of gette-ring tritium and the application effect are studied. The result shows that the effect can achieve 80% ～ 90% when the tritium consis-tency is 10~7 Bq/L and the electrode area is about 0. 025 m~2 in the air atmosphere, no matter being given DC electricity or not. The same electrode has the similar effect in the N_2 atmosphere. It shows that tritium is conducted from palladium to antimonie acid in form of proton or free radical and then been absorbed in antimonie acid.