A soft X-ray (80-1500 eV) grazing-incidence monochromator with varied-line-spacing plane gratings at PF-BL-11A.
A soft X-ray (80-1500 eV) grazing-incidence monochromator with varied-line-spacing plane gratings at PF-BL-11A.
复制标题
PF-BL-11A 上具有可变线距平面光栅的软 X 射线 (80-1500 eV) 掠入射单色仪。
DOI：
10.1107/s0909049597020335
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发表时间：
1998
影响因子：
2.5
通讯作者：
K. Ito
中科院分区：
文献类型：
--
作者：
Y. Kitajima;K. Amemiya;Y. Yonamoto;T. Ohta;T. Kikuchi;T. Kosuge;A. Toyoshima;K. Ito
介绍了光子工厂 (PF) 的新型软 X 射线束线 BL-11A 的设计和性能。在PF 2.5 GeV存储环的弯曲磁源上设计并构建了配备三个不同线距平面光栅的Hettrick型掠入射单色仪。对由非球面波前全息记录光学器件生产的 800 线 mm(-1) 层状光栅以及机械刻划闪耀光栅进行了测试。使用任一光栅在 400 eV 时均可实现超过 4500 的分辨能力，并且在 2000 的分辨能力下可获得约 10(10) 个光子 s(-1)。高光子通量使得能够研究低浓度样品，例如表面吸附物。适用于宽能量范围的简单扫描机制对于 C、N 和 O 等轻元素的 EXAFS 测量非常有用。
The design and performance of a new soft X-ray beamline BL-11A at the Photon Factory (PF) are presented. A Hettrick-type grazing-incidence monochromator equipped with three varied-line-spacing plane gratings was designed and constructed at a bending-magnet source of the PF 2.5 GeV storage ring. An 800 lines mm(-1) laminar grating produced by aspheric-wavefront holographic recording optics, as well as a mechanically ruled blazed one, were tested. A resolving power of more than 4500 was achieved at 400 eV with either grating, and approximately 10(10) photons s(-1) are available at a resolving power of 2000. High photon flux enables low-concentration samples, such as surface adsorbates, to be studied. A simple scanning mechanism for a wide energy range is quite useful for EXAFS measurements on light elements such as C, N and O.