X射线辐射测量(英文)

X-ray radiometry

在过去的几年里,人们使用同步辐射技术在X射线波段实现了基于辐射源和基于探测器的辐射测量,电子储存环被用作主辐射源标准,而低温辐射计(ESR)被用作主探测器标准。因为低温辐射计需要强的单色辐射,所以,这种方式也必须使用同步辐射。文中对能量色散探测器和硅光电二极管的探测效率和响应度做了校准,其相对不确定度约1 %,所得结果与模型计算值做了比较。

Source-based and detector-based radiometry has been realized in the X-ray range during the last few years by using synchrotron radiation. Electron storage rings are operated as primary source standards and cryogenic Electric Substitution Radiometers （ESRs） as primary detector standards. As ESRs require intense monochromatic radiation, synchrotron radiation is also necessary for this approach. Energy-dispersive detectors as well as silicon photodiodes have been calibrated with relative uncertainties of the detection efficiency or responsivity down to about 1%. The results are compared to model calculations.