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氡通过不同滤膜的扩散系数测量研究

Nuclear Electronics & Detection Technology(2016)

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Abstract
基于气体透过滤膜的扩散原理,对应用于固体核径迹探测器累积测氡的三种滤膜在四种不同湿度下的氡扩散能力进行研究.实验结果表明:醋酸纤维滤膜和普通滤纸的扩散能力明显强于PE滤膜,更适用于固体核径迹测氡,且湿度对三种滤膜氡扩散能力的影响不明显.通过本次实验得到,醋酸纤维滤膜的扩散系数为1.46×10-9m2/s~2.59×10-9m2/s,普通滤纸的扩散系数为1.01×10-9m2/s~1.45×10-9m2/s.
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