According to intensity distribution of the synchrotron radiation source focused by a toroidal mirror at the Beijing synchrotron radiation biological macromolecule station, theoretical modeling of the Beijing synchrotr...According to intensity distribution of the synchrotron radiation source focused by a toroidal mirror at the Beijing synchrotron radiation biological macromolecule station, theoretical modeling of the Beijing synchrotron radiation source is developed for capillary optics. Using this theoretical modeling, the influences of the configuration curve of the polycapillary X-ray lens on transmission efficiency and working distance are analyzed. The experimental results of the transmission efficiency and working distance at the biological macromolecule station are in good agreement with the theoretical results.展开更多
本文介绍一种新型高能量分辨微束 X 荧光分析谱仪,它由导管 X 光透镜和使用位置灵敏正比计数管的波长色散谱仪组成。实验结果表明本谱仪使用的 X 光透镜形成的 X 光微束的最小束径对 Cu Kα线为 50 μm,一次测量同时覆盖的能量范围可达 ...本文介绍一种新型高能量分辨微束 X 荧光分析谱仪,它由导管 X 光透镜和使用位置灵敏正比计数管的波长色散谱仪组成。实验结果表明本谱仪使用的 X 光透镜形成的 X 光微束的最小束径对 Cu Kα线为 50 μm,一次测量同时覆盖的能量范围可达 800 eV 以上,而对 Ti Kα线的能量分辨达到 4.4 eV。展开更多
设计了一种基于方形多毛细管X射线透镜的X射线探测系统,该系统具有较小的X射线收集角。方形多毛细管X射线透镜是一种基于X射线全反射的X射线调控器件,可将大面积范围内的X射线汇聚至X射线CCD探测器。通过测定X射线在方形多毛细管X射线...设计了一种基于方形多毛细管X射线透镜的X射线探测系统,该系统具有较小的X射线收集角。方形多毛细管X射线透镜是一种基于X射线全反射的X射线调控器件,可将大面积范围内的X射线汇聚至X射线CCD探测器。通过测定X射线在方形多毛细管X射线透镜中的传输特性、建立数据模型,可校正X射线CCD所测数据并还原透镜入口端的入射X射线信息。通过光线轨迹追踪方法模拟了方形多毛细管X射线透镜的传输特性。结果表明,该系统适合探测能量低于21.5 ke V的X射线,用于大面积成像;也适合探测能量低于14.6 ke V的X射线,用于提高探测效率。该系统不仅可用于诸如X射线脉冲星导航等特殊应用,也可用于常规X射线探测。展开更多
基金Project supported by the National Natural Science Foundation of China (Grant Nos. 11179010 and 11075017 )the Natural Science Foundation of Beijing,China (Grant No. 1102019)the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20100003120010)
文摘According to intensity distribution of the synchrotron radiation source focused by a toroidal mirror at the Beijing synchrotron radiation biological macromolecule station, theoretical modeling of the Beijing synchrotron radiation source is developed for capillary optics. Using this theoretical modeling, the influences of the configuration curve of the polycapillary X-ray lens on transmission efficiency and working distance are analyzed. The experimental results of the transmission efficiency and working distance at the biological macromolecule station are in good agreement with the theoretical results.
文摘本文介绍一种新型高能量分辨微束 X 荧光分析谱仪,它由导管 X 光透镜和使用位置灵敏正比计数管的波长色散谱仪组成。实验结果表明本谱仪使用的 X 光透镜形成的 X 光微束的最小束径对 Cu Kα线为 50 μm,一次测量同时覆盖的能量范围可达 800 eV 以上,而对 Ti Kα线的能量分辨达到 4.4 eV。
文摘设计了一种基于方形多毛细管X射线透镜的X射线探测系统,该系统具有较小的X射线收集角。方形多毛细管X射线透镜是一种基于X射线全反射的X射线调控器件,可将大面积范围内的X射线汇聚至X射线CCD探测器。通过测定X射线在方形多毛细管X射线透镜中的传输特性、建立数据模型,可校正X射线CCD所测数据并还原透镜入口端的入射X射线信息。通过光线轨迹追踪方法模拟了方形多毛细管X射线透镜的传输特性。结果表明,该系统适合探测能量低于21.5 ke V的X射线,用于大面积成像;也适合探测能量低于14.6 ke V的X射线,用于提高探测效率。该系统不仅可用于诸如X射线脉冲星导航等特殊应用,也可用于常规X射线探测。
