行李放射性检测装置的研制

Development of Luggage Radiation Monitor

摘要: 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0.1 μGy/h、行李移动速度小于0.2 m/s条件下，该装置对 ¹³⁷Cs、⁶⁰Co、¹³³Ba核素的可探测活度下限分别为6.7×10³、3.7×10³、6.7×10³ Bq，对富集度为90%的U样品，探测质量下限为2 g。

Abstract: 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 6.7×10³, 3.7×10³, 6.7×10³Bq, respectively for ¹³⁷Cs, ⁶⁰Co, ¹³³Ba radiation source, and the sensitivity is about 2 g for high enrichment uranium.