微波布拉格衍射实验中异常峰值出现的原因分析  

Cause Analysis of Abnormal Peak in Microwave Bragg Diffraction Experiment

作　　者：张一航 盖磊[2] ZHANG Yihang;GAI Lei(College of Oceanic and Atmosphere Sciences;College of Physics and Optoelectronic Engineering,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学海洋与大气学院,山东青岛266100 [2]中国海洋大学物理与光电工程学院,山东青岛266100

出　　处：《大学物理实验》2022年第5期54-57,共4页Physical Experiment of College

基　　金：教指委(华东地区)2021年度高等学校教学研究项目(2021JZWHD10);中国海洋大学2021年度“中央高校基本科研业务费实验室研究基金项目”(202151006);中国海洋大学2021年度本科教育教学研究项目(2021JY008)。

摘　　要：文章对微波布拉格衍射实验中入射角较大时的异常峰值,进行了理论分析,计算出了异常峰值出现的临界入射角和理论角度值。在求解临界入射角时,改进了已有方法,考虑了接收喇叭张角的影响,使得临界入射角的计算值更加准确,成功解释了实验中出现的所有异常峰值,验证了对其成因的分析。In order to analyze the cause of abnormal peaks in Microwave Bragg Diffraction Experiment with large incident angle,theoretical analysis is carried out,the threshold incident angle and theoretical angles of abnormal peaks are calculated.When solving the threshold incident angle,the existing method is improved,the influence of the horn angle of the receiving horn is considered,which makes the calculated value of the threshold incident angle more accurate,successfully explains all the abnormal peaks in the experiment and verifies the analysis of the cause of the abnormal peaks.

关 键 词：布拉格衍射 异常峰值 临界入射角 喇叭张角 

分 类 号：O4-34[理学—物理]