X射线成像椭球聚焦镜的设计与检测  

The design and test of ellipsoidal glass capillaries as condensers for X-ray microscope

作　　者：田金萍[1] 李文杰[1] 陈洁[1] 刘刚[1] 熊瑛[1] 柳龙华[1] 黄新龙[1] 田扬超[1] 

机构地区：[1]中国科学技术大学国家同步辐射实验室,合肥230029

出　　处：《核技术》2008年第9期671-675,共5页Nuclear Techniques

基　　金：国家自然科学基金项目(N0.10675113;N0.10734070);教育部"985"支持项目资助

摘　　要：国家同步辐射实验室(NSRL)以Wiggler为入射光源,建设了高空间分辨X射线成像光束线和实验站。根据成像系统对照明光的要求,使用旋转椭球聚焦镜聚焦入射光,结合小孔和中心阻挡器,形成锥形空心光斑照射到样品上。本文对成像系统所需的旋转椭球聚焦镜的长轴和短轴等进行了计算,并对美国Xraida公司制作的旋转椭球聚焦镜进行了检测。实验结果表明旋转椭球聚焦镜满足X射线成像的设计要求,其衍射效率大于85%。A high resolution X-ray microscope endstation was constructed on a wiggler beamline at the National Synchrotron Radiation Laboratory （NSRL）. Parameters of the ellipsoidal glass capillaries as condensers were calculated and designed based on the illumination requests in the X-ray microscope system. Performance of the eUipsoidal glass capillaries was tested. The results indicate that the beam size agrees with the designed parameters and focus efficiencies of the ellipsoidal glass capillary condensers are better than 85%.

关 键 词：X射线成像 旋转椭球聚焦镜 同步辐射 聚焦效率 

分 类 号：O432.1[机械工程—光学工程]