摘要
国家同步辐射实验室储存环大厅的辐射场不仅是一个变化的瞬发辐射场，而且还是一个由能谱很宽的轫致辐射与中子组成的混合辐射场。为更好地了解该辐射场的特性，我们主要采用连续监测方法，用充氩气的高压电离室测量轫致辐射，用带有聚乙烯慢化体的ＢＦ＿３计数管作中子探测器；由计算机系统采集并处理数据。在调机的初期，采用天然ＬｉＦ为元件的热释光剂量计（ＴＬＤ）对轫致辐射的剂量贡献进行积累测量。所得结果能清楚地表示出该瞬发辐射场的特点，反映了机器的状况，为调试机器和制订辐射防护方案提供有用信息。
The radiation field in the storage ring hall of the National Synchrotron Radiation Laboratory is not only a varying radiation prompt field, but also a mixed one consistingof widespectrum bremsstrahlung and neutron. To deeper understand its characteristics,a continuous measurement method is adapted. Measuremcnt of bremsstrahlung is using pressur-ized ionization chamber filled with argon while measurement of neutron using BF_3 tube inpolythene moderator,acquiring and processing dnta using a computer. In addition,at the beginning of the comrnissioning,natural LiF TLD dosimeters is used to detemine the dose distribution of bremsstrahlung. The results obtained show the characteristics of protnpt radiation field clearly,and reflect the machine operation state as well. All these have provided useful information for the machine commissioning and the design of radiation protection program.
出处
《辐射防护》
CAS
CSCD
北大核心
1995年第3期168-175,共8页
Radiation Protection
关键词
辐射场
轫致辐射
中子
储存环大厅
Prompt Radiation Field,Bremsstrahlung, Neutron,Continuous Monitoring, Data Acquiringand Processing,Storage Ring Hall,NSRL
