摘要
现有的德国莱宝教具公司生产的X射线实验仪采用多道脉冲幅度分析器测量衍射能谱,默认的COUPLED模式仅能得到NaCl单晶的(100)切割晶面的衍射能谱.通过旋转靶台,重新设置测角零点,再利用COUPLED模式测量,即可得到其他非切割晶面的衍射能谱.由于此X射线实验仪无角度自动校正功能,故通过二维扫描的方式对靶台和探测器转角进行修正,可以减少误差.
Using the default COUPLED mode of the available X-ray apparatus of Leybold Germany(measuring diffraction energy curve by multi-channel pulse amplitude analyzer),only the diffraction energy curve of the(100)slicing lattice plane of the NaCl single crystal could be obtained.By rotating the target stage,resetting the null point of the angle measurement,and then,using the COUPLED mode,the diffraction energy curves of the other non-slicing lattice planes were obtained.In the meantime,because the X-ray apparatus of the energy multi-channel mode has no automatic angle correction function,the angle of the target stage and the detector were corrected by means of two-dimensional scanning,and the measuring errors were reduced.
作者
向臻
王春梅
沈国土
XIANG Zhen;WANG Chun-mei;SHEN Guo-tu(School of Physics and Electronic Science,East China Normal University,Shanghai 200241,China)
出处
《物理实验》
2020年第3期18-22,共5页
Physics Experimentation
关键词
X射线
布拉格衍射
NaCl单晶
非切割晶面
测角零点
晶面序数
衍射级数
X-ray
Bragg diffraction
NaCl single crystal
non-slicing lattice plane
null point
lattice plane ordinal number
diffraction order
作者简介
向臻(1997-),女,重庆人,华东师范大学物理与电子科学学院2016级本科生;通讯作者:沈国土(1970-),男,浙江宁波人,华东师范大学物理与电子科学学院副教授,博士,主要从事物理实验教学与研究.
