基于亥姆霍兹线圈的磁聚焦实验研究  

Research on magnetic focusing experiment using Helmholtz coil

作　　者：孙博鹏[1] 林潇[1] 杨艾红[1] 彭延东[1] 

机构地区：[1]山东科技大学理学院应用物理系,山东青岛266590

出　　处：《物理实验》2013年第5期46-48,共3页Physics Experimentation

基　　金：国家自然科学基金(No.11204162);山东省自然科学基金(No.ZR2012FQ001)

摘　　要：设计了磁聚焦现象观测实验仪器,使用亥姆霍兹线圈和透明的阴极射线管,能够直接观测到磁聚焦现象中粒子的整体运动轨迹区域,直观地展示了磁聚焦现象.同时该仪器还能够利用磁聚焦法测量带电粒子比荷,演示带电粒子的静电偏转效应以及磁效应.An experiment device for observing magnetic focusing phenomenon was designed. With the Helmholtz coil and transparent cathode-ray tube, the magnetic focusing phenomenon was visually demonstrated, the trace of electron motion was directly observed. Using this device, the electron charge-mass ratio could be measured and the electrostatic and magnetic deflection effects could both be demonstrated.

关 键 词：磁聚焦 亥姆霍兹线圈 阴极射线管 

分 类 号：O441.5[理学—电磁学]