CAJ | 학술논문

主动式活性炭吸附222 Rn的方法中，吸附时间不同，222 Rn在活性炭盒中的分布不均匀，这对 H PGeγ谱仪测量分析中效率刻度产生影响。通过在标准氡室进行的主动式双滤膜活性炭吸附实验，分析得到不同吸附时间下 HPGe γ谱仪对222 Rn子体不同能量特征γ射线的探测效率和222 Rn在双滤膜活性炭盒中进出口计数相对偏差，拟合得到两者之间的关系曲线，即不同能量特征γ射线下的探测效率与222 Rn进出口计数相对偏差呈线性关系。通过实验得到双滤膜活性炭盒对氡吸附量的拟合曲线值与测氡仪实测值相对偏差绝对值小于5％，验证了该方法的正确性和可靠性。
주동식활성탄흡부222 Rn적방법중，흡부시간불동，222 Rn재활성탄합중적분포불균균，저대 H PGeγ보의측량분석중효솔각도산생영향。통과재표준동실진행적주동식쌍려막활성탄흡부실험，분석득도불동흡부시간하 HPGe γ보의대222 Rn자체불동능량특정γ사선적탐측효솔화222 Rn재쌍려막활성탄합중진출구계수상대편차，의합득도량자지간적관계곡선，즉불동능량특정γ사선하적탐측효솔여222 Rn진출구계수상대편차정선성관계。통과실험득도쌍려막활성탄합대동흡부량적의합곡선치여측동의실측치상대편차절대치소우5％，험증료해방법적정학성화가고성。
In active adsorption of activated charcoal ,it is uneven distribution of 222 Rn in the collector in different adsorption time ,w hich makes impact on efficiency calibration by HPGe γ spectrometry . By the adsorption experiment of active double-membrane activated charcoal in the standard radon chamber , the relationship between detection efficiencies of different energy characteristics of the γ-ray and counting relative deviation of 222 Rn from import and export side of the double-membrane activated charcoal collector by HPGeγspectrometry in different adsorption time was obtained ,which is linear .The absolute value of relative deviation of adsorption capacity for 222 Rn is less than 5%between calculated and measured ,which is to verify the correctness and reliability of the method of active double-membrane activated charcoal .