利用天然本底辐射场对固定式环境辐射监测仪进行现场校准方法的研究

Research on the On-site Calibration Method of Fixed Environmental Radiation Monitor Using Natural Background Radiation Field

利用天然本底辐射场对固定式环境辐射监测仪进行了现场校准方法的研究。实验结果表明,采用天然本底校准方法能够较好的解决固定式环境辐射辐射监测仪的校准问题。在天然本底辐射场中,采用积分法进行测量,测量的数据具有良好的重复性,相对响应r_(AB)的重复性好,相关性好。通过交换传递仪表和监督仪表位置,可以较准确地确定相对响应r_(AB)。其平均相对响应r_(AB)=0.996,标准偏差为0.12%。

In this study, we have carried out on - site calibration experiment of stationary environmental radiation monitoring instrument in natural radiation field. The results show that using on - site calibration experiment in natural radiation field can solve the problem of the calibration of stationary environmental radiation monitoring instrument. In natural field, using integral method can obtained stable data and stable relative response, and has good correlation. By changing the position of exchange transfer instrument and monitoring instrument, can accurately confirm the relative response. The average of relative response is 0. 996 and the standard deviation is 0. 12 %.