X光电离室标准探测器研制及应用  

Development and applications of X-ray ionization chamber standard detector

作　　者：易荣清[1] 崔延莉[1] 杜华冰[1] 赵屹东[2] 崔明启[2] 郑雷[2] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,绵阳621900 [2]中国科学院高能物理研究所,北京100049

出　　处：《核技术》2009年第12期885-888,共4页Nuclear Techniques

摘　　要：在电离室的内部设置探测器并采用大的电离室腔体,可直接测量气体吸收、降低气体密度分布梯度、避免由于气压不稳、窗膜吸收和窗口尺寸等引起的不确定性。本文分析了引起X光强度测量不确定度的各个因素,给出X光电离室标准探测器的测量不确定度好于5%。Using a detector in an ionization chamber of large cavity, one is able to measure gas absorption directly, with reduced grads of gas density distribution, so as to avoid uncertainties due to air pressure instability, window absorption and size of the window film. In this paper, various factors causing uncertainties in the X-ray intensity measurement were analyzed. Uncertainty of the X-ray ionization standard detector is less than 5%.

关 键 词：电离室 X光标准探测器 电离截面 

分 类 号：O536[理学—等离子体物理] TL811.1[理学—物理]