行李放射性检测装置的研制

Development of Luggage Radiation Monitor

行李放射性检测装置可与现有X射线安全检测装置联合用于放射性安全检测。该装置采用NaI(Tl)探测器,用移动平均法进行放射性检测。在本底为0.1μGy/h、行李移动速度小于0.2 m/s条件下,该装置对137Cs6、0Co1、33Ba核素的可探测活度下限分别为6.7×103、3.7×103、6.7×103Bq,对富集度为90%的U样品,探测质量下限为2 g。

The luggage radiation monitor with NaI（Tl） detector can combined with X- ray monitor to be used for radioactivity monitoring in railway station and airport. The moving average detection method is used for the monitor. At the background intensity of 0.1 μGy/h and the moving speed of 0. 2 m/s, the sensitivity of the monitor is 6.7× 10^3, 3.7×10^3, 6.7× 10^3 Bq, respectively for ^137Cs, ^60Co, ^133Ba radiation source, and the sensitivity is about 2 g for high enrichment uranium.