硬X射线透射弯晶谱仪

Novel transmission curved crystal spectrometer used on hard X-ray diagnoses

提出了一种基于圆柱面石英透射弯晶的晶体谱仪，主要用于诊断10～60keV范围的硬X射线光谱。石英弯晶的曲率半径为112mm．晶格常数为0．4256nm。实验利用Mo靶X射线管作为点光源，晶体与光源距离700mm，采用成像板作为记录介质．获得了清晰的光谱图像。Mo的两条特征谱线以光轴为中心线对称分布，谱线的位置与理论计算符合得很好。误差分析表明，实际测量值与理论值的偏差主要来源于瞄准精度。

A novel transmission curved crystal spectrometer is described for hard X-ray measurements in the energy range of 10-60 keV. The spectrometer is based on a cylindrical curved quartz crystal. The curvature radius is 112 mm and the spacing of the crystal lattice is 0. 425 6 nm. The experiment utilizes a Mo X-ray tube as the light source and the spectrometer is set perpendicular to the axis about 700 mm distance. Two characteristic spectra are symmetrically recorded by image plate clearly and the experiment is well consistent with theoretical analysis. The errror analysis shows that the aim accuracy is the main factor.