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随着放射性表面污染测量的实际要求不断提高,传统的表面污染监测仪已经不能满足要求,特别在核设施退役放射性调查,放射性事故下表面污染热点搜寻等特殊情况要求下,需要使用大面积便携式表面污染监测仪。新型塑料闪烁体β表面污染监测系统(图1)正是为了满足上述条件而开发的。探测系统采用薄片式大面积塑料闪烁体作为探测器,有效面积为
With the continuous improvement of the actual requirements of radioactive surface contamination measurement, the traditional surface contamination monitoring system can not meet the requirements. Especially under the special circumstances such as the decommissioning radioactive investigation of nuclear facilities and the hot spot search of surface contamination under radioactive accident, it is necessary to use large area portable surface Pollution Monitor. The new plastic scintillator beta surface contamination monitoring system (Figure 1) was developed to meet the above conditions. Detection system uses a large piece of thin plastic scintillator detector, the effective area is