基于同步辐射的快速扫描X射线微束荧光成像方法  

Fast scanning X-ray microprobe fluorescence imaging based on synchrotron radiation

作　　者：闫芬[1] 张继超[1] 李爱国[1] 杨科[1] 王华[1] 毛成文[1] 梁东旭[1] 闫帅[1] 李炯[1] 余笑寒[1] 

机构地区：[1]中国科学院上海应用物理研究所,上海201204

出　　处：《物理学报》2011年第9期193-199,共7页Acta Physica Sinica

基　　金：国家重点基础研究发展计划(批准号:2010CB934501);国家重大研究计划项目(批准号:2007CB936003);国家自然科学基金(批准号:10805071)资助的课题~~

摘　　要：在上海光源硬X射线微聚焦光束线站(BL15U1)上,基于EPICS软件平台,集成运动控制,光强探测,荧光探测等功能,实现了"飞行"模式(on-the-fly)X射线扫描微束荧光成像方法.用"飞行"扫描X射线荧光成像法获得了标准镍网,以及微量元素Cu,Zn,K,Fe在样品老鼠脾内的分布图像,结果显示该方法不但在速度上有了极大的提高,而且获得的元素分布图像具有高质量.A method of fast scanning X-ray microprobe fluorescence imaging, on-the-fly scan, has been recently accomplished in BL15U1 hard X-ray micro-focus beamline of Shanghai Synchrotron Radiation Facility, based on the software platform of EPICS; the high technology of precise motion control, the X-ray flux detection and the X-ray fluorescence spectrum detection are integrated into this system. By the method of X-ray microprobe fluorescence imaging, the images of standard nickel mask and the elemental distribution of copper, zinc, kalium and iron in specimen of mouse spleen are obtained. The results demonstrate that this method not only enhances the efficiency on a large scale, but also achieves high quality fluorescence mapping.

关 键 词：快速扫描 X射线微束荧光成像 同步辐射 微量元素分布 

分 类 号：O434.19[机械工程—光学工程]