北京同步辐射装置X射线漫散射实验站及准周期非晶多层膜的X射线非镜面散射研究  

X-Ray Diffuse Scattering Station at BSRF and Study onNonspecular X-Ray Scattering From QuasiperiodicAmorphous Multilayer

作　　者：姜晓明[1] 景毓辉[1] 郑文莉[1] 修立松[1] 武家扬 刘功淳 

机构地区：[1]中国科学院高能物理研究所

出　　处：《高能物理与核物理》1996年第5期460-467,共8页High Energy Physics and Nuclear Physics

摘　　要：讨论了北京同步辐射装置的４Ｗ１Ｃ光束线和Ｘ射线漫散射实验站的技术特点．利用在漫散射实验站上获得的能量分辨率为４．４×１０－４、光斑大小为０．５ｍｍ（水平）×０．３ｍｍ（垂直）的聚焦单色Ｘ射线光束，研究了准周期非晶多层膜的Ｘ射线漫散射──非镜面散射．实验结果表明，准周期多层膜的漫散射强度分布在倒空间中与表面平行的条纹上并形成散射强度的调制．对散射强度调制进行的模拟计算得到相当满意的结果．Technical specifications of Beam-line 4W1C and X-ray diffuse scattering station at Beijing Synchrotron Radiation Facility(BSRF)were discussed. Double focussed monochromatic X-ray beam,with energy resolution of 4.4-×10-4 and beam spot of 0.5mm(H)×0.3mm(V),was obtained with a bent crystal mdnochromator shaped in triangular and a cylindric mirror.Nonspecular X-ray scattering from quasiperiodic amorphous multilayer was studied.The scattering maximums formed intensity streaks in the reciprocal space having the quasiperiodic character.Intensity modulations were observed and simulations based on atomic scattering gave satisfactory results.

关 键 词：X射线 漫散射 准周期 多层膜 强度调制 

分 类 号：O434.1[机械工程—光学工程]