摘要
国际上对于辐射防护剂量学的研究主要针对连续辐射,然而脉冲式电离辐射在工业探伤、X射线诊断、闪光X射线照相技术、安检和科研等领域中得到了广泛应用。主动式电离辐射剂量仪采用稳态辐射场进行刻度,难以准确测量短脉冲、高剂量率的脉冲式电离辐射。为了解主动式电离辐射剂量仪的脉冲响应特性,基于毫秒级脉冲X射线机搭建脉冲X射线参考辐射场,针对常用4款主动式剂量仪开展脉冲X射线响应特性测试。测试结果表明,目前常用4款主动式剂量仪均不适用于短脉冲、高剂量率辐射场的剂量测量和预警。
Research on radiation protection dosimetry mainly focuses on continuous radiation,but in the fields of industrial detection,X ray diagnosis,flash X ray photography,security inspection and scientific research,pulsed ionizing radiation has been widely practised.The active electronic dosimeters are used in the fields of environment monitoring,area monitoring,personal dose monitoring and emergency monitoring.The active electronic dosimeters are calibrated in continuous radiation field and difficult to measure short pulse and high dose rate pulsed ionizing radiation accurately.In order to learn the pulsed response characteristics of the active ionizing radiation dosimeter,a pulsed X ray reference radiation field has been built based on a millisecond pulsed X ray machine,and pulsed response characteristics of four active ionizing radiation dosimeters were studied in the pulsed X ray reference radiation field.The results show that the commonly used active dosimeters are not suitable for dose measurement and early warning of short pulse and high dose rate radiation fields.
作者
高飞
陈东风
肖雪夫
徐阳
GAO Fei;CHEN Dongfeng;XIAO Xuefu;XU Yang(China Institue of Atomic Energy,Beijing 102413)
出处
《辐射防护》
CAS
CSCD
北大核心
2019年第6期469-474,共6页
Radiation Protection
关键词
脉冲X射线
主动式电离辐射剂量仪
辐射剂量特性
蒙特卡罗
pulsed X ray
active ionizing radiation dosimeter
radiation dosimetry characteristic
Monte Carlo
