单缝衍射法测量磁致伸缩系数  

Measuring Magnetostriction Coefficient Using Single Slit Diffraction Method

作　　者：金远伟 赵斌[2] 吴庆春[2] JIN Yuanwei;ZHAO Bin;WU Qingchun(School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China;School of Mathematics and Physics,Nanjing Institute of Technology,Nanjing 211167,China)

机构地区：[1]上海交通大学物理与天文学院,上海200240 [2]南京工程学院数理学院,江苏南京211167

出　　处：《大学物理实验》2023年第2期5-9,共5页Physical Experiment of College

基　　金：江苏省青蓝工程;国家自然科学基金(11275202)。

摘　　要：根据单缝衍射原理设计光路,通过数字图样处理方法处理高清摄像头采集的衍射图像,搭建一套精确测量铁磁材料在弱磁场中磁致伸缩系数的实验装置.该装置具有测量方法简单,精确度高,能够快捷测量的特点.According to the principle of single slit diffraction,a device for measuring magnetostriction coefficient was devised by processing the diffraction images collected by high-definition camera using Digital Image Processing method.Then the device was used to accurately measure magnetostriction coefficient of TbDyFe alloy in a weak magnetic field.The device has the characteristics of simple measurement method,high accuracy and quick measurement.

关 键 词：磁致伸缩系数 单缝衍射 数字图样处理方法 

分 类 号：O482.5[理学—固体物理] O436.1[理学—物理]