Performance of a varied-space plane-grating monochromator
Performance of a varied-space plane-grating monochromator
复制标题
变空间平面光栅单色仪的性能
DOI：
10.1117/12.283983
复制
发表时间：
1997
期刊：
影响因子：
2.3
通讯作者：
A. Yagishita
中科院分区：
文献类型：
--
作者：
Masamitsu Watanabe;A. Toyoshima;Y. Azuma;T. Hayaishi;Yonglian Yan;A. Yagishita
新型掠入射软 X 射线单色仪已在光子工厂的波荡器光束线 BL-2 上投入使用。该单色仪旨在满足高分辨率软 X 射线光谱的需求。单色仪采用了变化的空间平面光栅以及矢状聚焦和会聚光束的配置来满足要求。根据分析估算和射线追踪模拟，在250至1400 eV的全能量范围内可以获得超过10000的高分辨率。对分辨率、光子通量和光斑尺寸三个方面进行了初步实验。结果表明，典型分辨率为7500～10000，绝对光子通量为10b光子/s/300mA/O.02%BW量级，样品位置光斑尺寸为O.1(V)×0.9(11)2FW。
A new grazing incidence soft x-ray monochromator has been commissioned on the undulator beamline BL-2 of the Photon Factory. The monochromator has been designed to meet the demands for high-resolution soft x-ray spectroscopy. The monochromator has employed a varied space plane grating and a configuration with sagittal focusing and converging beam to satisfy the requirement. According to analytical estimation and ray tracing simulation, the high resolving power beyond 10000 can be obtained over the full energy range from 250 to 1400 eV. Preliminary experiments have been done on three points concerning the resolving power, photon flux, and spot size. The results have showed the typical resolving power from 7500 to 10000, the absolute photon flux ofthe order of lOb photons/s/300mA/O.02%BW, and the spot size ofO.1(V) x 0.9(11) 2FW at the sample position.