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用于激光等离子体中X射线测量的单光子计数型CCD的标定
引用本文:张双根,黄文忠,谷渝秋,蒋刚,熊勇,温贤伦,王光昶.用于激光等离子体中X射线测量的单光子计数型CCD的标定[J].强激光与粒子束,2006,18(1):77-80.
作者姓名:张双根  黄文忠  谷渝秋  蒋刚  熊勇  温贤伦  王光昶
作者单位:1. 四川大学 原子分子物理研究所, 成都 610065;2. 中国工程物理研究院 激光聚变研究中心 高温高密度等离子体物理国家级重点实验室, 四川 绵阳 621900
基金项目:中国科学院资助项目;国防重点实验室基金
摘    要: 介绍了单光子计数型CCD的工作原理。实验选择参数准确的X射线放射源前向辐照CCD的像元面,计数由此产生;通过积分获得X射线的强度分布,在CCD处于单光子计数状态下,扣除本底信号,得到该型CCD产生一个计数所需的光子能量,约6.453 eV。标定了该型CCD的探测效率。结果表明:在单光子计数型CCD的有效能区内,对于不同能量的入射光子,其探测效率不同,在5.3 keV处获得最高探测效率66%;随着能量的增大,探测效率降低。标定结果可为激光等离子体研究中定量测量X射线光谱提供实验参考。

关 键 词:CCD  能量响应  探测效率  标定  X射线
文章编号:1001-4322(2006)01-0077-04
收稿时间:2005-08-22
修稿时间:2005-10-26

Calibration of single-photon counting X-ray CCD
ZHANG Shuang-gen,HUANG Wen-zhong,GU Yu-qiu,JIANG Gang,XIONG Yong,WEN Xian-lun,WANG Guang-chang.Calibration of single-photon counting X-ray CCD[J].High Power Laser and Particle Beams,2006,18(1):77-80.
Authors:ZHANG Shuang-gen  HUANG Wen-zhong  GU Yu-qiu  JIANG Gang  XIONG Yong  WEN Xian-lun  WANG Guang-chang
Institution:1. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China;2. Research Center of Laser Fusion, CAEP, P.O.Box 919-986, Mianyang 621900, China
Abstract:This paper introduced a new technique about calibration of a single-photon counting X-ray CCD.The principle of the CCD was described.In the calibration experiment,several standard X-ray sources were adopted to radiate forward the CCD detector and the counts occured.When the CCD was in a state of single-photon counting,the X-ray intensity was obtained with integral.After deducting the background,the photon energy of 6.453 eV that produced one count was calibrated.Based on this result,the detection efficiency of the CCD was calculated.The detection efficiency changed with photon energies in the range of 5.3~30 keV.The efficiency decreased with the increase of the photon energy.
Keywords:CCD  Energy response  Detection efficiency  Calibration  X-ray  
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