Horizontal‐type four‐circle diffractometer station of the vertical wiggler beamline at the Photon Factory
Horizontal‐type four‐circle diffractometer station of the vertical wiggler beamline at the Photon Factory
复制标题
光子工厂垂直摆动光束线水平型四圆衍射仪站
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
Y. Iitaka
中科院分区：
文献类型：
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作者：
Y. Satow;Y. Iitaka
设计并建造了一个实验站，该实验站配有一个四圆衍射仪，并结合可调和聚焦光学器件，用于使用来自光子工厂垂直摇摆器的同步辐射进行X射线晶体学研究。实施到光束线14 A中的光学器件包括双晶体单色器和双聚焦镜，以便产生在宽波长区域上可调谐的高光子通量x射线。该衍射仪的赤道面处于水平位置，专门用于快速准确地测量大分子晶体的X射线衍射强度，并配有校准架以及计算机控制和测量系统。该站已被证明对蛋白质晶体的异常散射研究和高光子能量下的EXAFS研究等应用特别有用。
An experimental station with a four‐circle diffractometer combined with tunable and focusing optics was designed and constructed for x‐ray crystallography using synchrotron radiation from the vertical wiggler at the Photon Factory. The optics implemented into beamline 14A comprises a double‐crystal monochromator and a double‐focusing mirror so as to yield high photon flux x rays tunable over wide wavelength regions. The diffractometer with its equatorial plane in the horizontal was specially fabricated for rapid and accurate measurements of x‐ray diffraction intensities from macromolecular crystals, and was provided with an alignment carriage as well as computer control and measuring systems. The station has proved to be particularly useful for such applications as anomalous scattering studies of protein crystals and also EXAFS studies at high photon energies.