辐射防护2013，Vol.33Issue(1)：46-48,53,4.
海水放射性监测装置研制及初步测试结果
Development of a Seawater Radioactivity Monitoring System and Its Preliminary Test Results
摘要
Abstract
A large amount of radionuclides released into the ocean during the Fukushima accident aroused concerns on the marine radioactivity monitoring. A Seawater Radioactivity Monitoring System based on Nal ( Tl) scintillation crystal was developed with its performance being preliminarily tested through simulation and underwater experiment. The detection efficiency of the system for full-energy peak of Cs was 2.17×10-5 cps/( Bq· m-3 ) , which fully conformed with its calibration result of 2. 27 × 10-5 cps/ (Bq·m-3). The system had been also tested underwater in the sea areas near Fujian province with the seawater background being measured in 6 hours. Providing a background spectrum and detection efficiency as above, the minimum detective activity concentration of this system for 137Cs would be 580 Bq/m3 . Test results show that the device could be effectively applied in routine monitoring of marine radioactivity or radioactive pollution under accident situation. A further update to the system was also given at last.关键词
海洋放射性/NaI探测器/蒙特卡罗方法Key words
marine radioactive/ Nal detector/ Monte Carlo method/ MDA分类
资源环境引用本文复制引用
曾志,苏健,衣宏昌,马豪,程建平,李君利..海水放射性监测装置研制及初步测试结果[J].辐射防护,2013,33(1):46-48,53,4.基金项目
清华大学自主科研计划资助"海洋放射性在线监测关键问题研究"(2011THZ07). （2011THZ07）
