The temperature-dependent diffusion coefficient of radon is one of the most important parameters for predicting radon migration in porous media. In order to measure this parameter more effectively and accurately, theoretical formulas were derived by the steady-state one-dimensional equation of radon migration in porous media for designing the corresponding experimental device, which was used to measure the diffusion coefficients of radon in uranium mill tailings. The results show that the diffusion coefficient of radon in porous media increases with increasing the temperature, which is in agreement with existing researches, verifying the method effectiveness. The changes of the diffusion coefficient of radon with the absolute temperature follow a power law.

don的温度依赖性扩散系数是预测ra在多孔介质中迁移的最重要参数之一。为了更有效，更准确地测量该参数，利用by态在多孔介质中的稳态一维方程式推导了理论公式，设计了相应的实验装置，用于测量ra在铀厂中的扩散系数。尾矿。结果表明，ra在多孔介质中的扩散系数随温度的升高而增加，这与现有研究相吻合，证明了该方法的有效性。don的扩散系数随绝对温度的变化遵循幂律。