The XAFS beamline of SSRF  

作　　者：于海生 魏向军 李炯 顾颂琦 张硕 汪丽华 马静远 李丽娜 高倩 司锐 孙凡飞 王宇 宋飞 徐洪杰 余笑寒 邹杨 王建强 姜政 黄宇营 

机构地区：[1]Shanghai Institute of Applied Physics, Chinese Academy of Sciences

出　　处：《Nuclear Science and Techniques》2015年第5期4-10,共7页核技术（英文）

基　　金：Supported by National Natural Science Foundation of China(Nos.11175244,11275256 and 11179024)

摘　　要：The BL14W1 beamline at Shanghai Synchrotron Radiation Facility(SSRF) is an X-ray absorption finestructure(XAFS) beamline, for investigating atomic local structure, which is demanded extensively in the fields of physics, chemistry, materials science, environmental science and so on. The beamline is based on a 38-pole wiggler with the maximum magnetic field of 1.2 T. X-rays of 4.5–40 ke V can be extracted by the optical scheme consisting of white beam vertical collimating mirror, liquid-nitrogen-cooled double crystal monochromator of Si(111) and Si(311), toroidal focusing mirror and higher harmonics rejection mirror. The maximum photon flux about 5 × 1012photons/s at the sample at 10 ke V, with a beam size of 0.3 mm × 0.3 mm. The beamline is equipped with four types of detectors for experiments in either transmission or fluorescence mode. At present,quick-XAFS, grazing incidence XAFS, X-ray emission spectroscopy, high-pressure XAFS and time-resolved X-ray excited optical luminescence methods have been developed.The BL14W1 beamline at Shanghai Synchrotron Radiation Facility（SSRF） is an X-ray absorption finestructure（XAFS） beamline, for investigating atomic local structure, which is demanded extensively in the fields of physics, chemistry, materials science, environmental science and so on. The beamline is based on a 38-pole wiggler with the maximum magnetic field of 1.2 T. X-rays of 4.5–40 ke V can be extracted by the optical scheme consisting of white beam vertical collimating mirror, liquid-nitrogen-cooled double crystal monochromator of Si（111） and Si（311）, toroidal focusing mirror and higher harmonics rejection mirror. The maximum photon flux about 5 × 1012photons/s at the sample at 10 ke V, with a beam size of 0.3 mm × 0.3 mm. The beamline is equipped with four types of detectors for experiments in either transmission or fluorescence mode. At present,quick-XAFS, grazing incidence XAFS, X-ray emission spectroscopy, high-pressure XAFS and time-resolved X-ray excited optical luminescence methods have been developed.

关 键 词：上海同步辐射装置 XAFS 光束线 X射线吸收精细结构 光源 双晶单色器 X射线激发 SSRF 

分 类 号：O434.1[机械工程—光学工程]