| 脉冲X射线剂量率测量不确定度分析 |
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| 引用本文： | 丛培天,陈伟,韩娟娟,郭宁,苏兆峰,张信军,孙剑锋,王亮平.脉冲X射线剂量率测量不确定度分析[J].强激光与粒子束,2010,22(11). |
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| 作者姓名： | 丛培天 陈伟 韩娟娟 郭宁 苏兆峰 张信军 孙剑锋 王亮平 |
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| 作者单位： | 西北核技术研究所， 西安 710024 |
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| 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%。
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| 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 |
| 收稿时间： | 1900-01-01; |
Analysis of measurement uncertainty of X-ray dose rate |
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| Cong Peitian,Chen Wei,Han Juanjuan,Guo Ning,Su Zhaofeng,Zhang Xinjun,Sun Jianfeng,Wang Liangping.Analysis of measurement uncertainty of X-ray dose rate[J].High Power Laser and Particle Beams,2010,22(11). |
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| Authors: | Cong Peitian Chen Wei Han Juanjuan Guo Ning Su Zhaofeng Zhang Xinjun Sun Jianfeng Wang Liangping |
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| Institution: | Northwest Institute of Nuclear Technology, P. O. Box 69-10, Xi’an 710024, China |
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| Abstract: | 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%． |
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| Keywords: | thermoluminescence dosemeter X-ray pulse width dose rate uncertainty |
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