摘要
"强光一号"短脉冲高能X射线剂量率测量,主要包括脉冲射线总剂量与脉冲射线时间宽度的测量,前者采用热释光剂量计测量,后者采用PIN半导体探测器记录。根据不确定度传递数学模型,分析了影响X射线剂量和脉冲宽度测量结果的因素。针对"强光一号"短脉冲高能X射线测量,定量地给出了各种因素引入的测量不确定度,总剂量测量是影响剂量率测量准确性的决定性因素,其相对标准不确定度为25.1%,脉冲宽度测量不确定度为3.7%,剂量率测量扩展不确定度为50.8%,置信概率95%。
The measurement of short pulse X-ray of high energy produced by Qiangguang Ⅰ accelerator for radiation effect study includes X-ray dose and pulse duration measuring.The thermoluminescence dosemeter（TLD） is used to measure X-ray dose,and the PIN semiconductor detector is employed for recording waveforms of X-ray.The dose rate is calculated out by the results of X-ray dose and pulse duration.By the mathematic model of uncertainty,factors with important effect on X-ray measuring are analyzed.For the measurement uncertainty of X-ray pulse duration is 3.7%,the measuring of X-ray dose with relative standard uncertainty of 25.1% plays a crucial role in determining X-ray dose rate,and the expanded uncertainty of dose rate is about 50.8% with confidence probability of 95%.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2010年第11期2773-2777,共5页
High Power Laser and Particle Beams
关键词
辐射效应
热释光剂量计
X射线
脉冲
剂量率
不确定度
radiation effect
thermoluminescence dosemeter
X-ray
pulse width
dose rate
uncertainty
