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本文简要介绍了液闪测氡中氡气自闪烁杯泄漏的实验结果。实验中对三种玻璃闪烁杯盖的密封性能作了检查,结果表明,这三种闪烁杯均不能满足液闪法测氡中对氡的密封要求。采用一层1mm 厚的橡胶垫片和一层0.01mm 厚的铝化聚脂膜作衬垫,代替原来的聚乙烯或纸板衬垫,解决了其中两种闪烁杯的氡气泄漏问题。建议在使用商品闪烁杯测氡时,应首先检查其对氡的密封性,必要时需采取补救措施,以保证测量结果的可靠性。
In this paper, the experimental results of radon gas leakage from flicker cups in liquid flasks are briefly introduced. In the experiment, the sealing performance of three glass scintillation cups was examined. The results show that these three scintillation cups can not meet the radon sealing requirements of liquid scintillation method. Using a 1mm thick rubber gasket and a 0.01mm thick aluminized polyester film to replace the original polyethylene or cardboard liner, radon leaks were resolved in two of the flicker cups. It is recommended to use the product scintillation cup to measure the radon, you should first check the radon’s sealing, if necessary, take remedial measures to ensure the reliability of measurement results.