【摘要】 本文介绍用 NaI(Tl)γ谱仪测量环境γ照射量率的总谱能量法。谱仪用标准镭源刻度,刻度系数 K_r 为17.82(GeV/20min)/(μR/h),环境γ照射量率测量值的总不确定度约为±9.5%,在玉泉路高能所内外20多个测量点上的测量结果表明,γ谱仪与高气压电离室的测量值较好符合。文中还讨论了用总谱能量法测量环境γ照射量率时的几个有关问题。更多还原

【Abstract】 This paper describes the total spectrum energy method formeasuring total terrestrial gamma exposure rate by a φ 75×75 NaI（T1） γspectrometer.The spectrometer was calibrated with a ²²⁶Ra standard source.The conversion factor is 17.82（Gev/20min）/（μR/h）and the total uncertaintyof measurement values is about±9.5%.Total terrestrial gamma exposusurerates were measured at more than 20 point around our institute.The results are in agreement with that given by high pressure chamber.更多还原