基于亥姆霍兹线圈的磁聚焦实验研究

Research on magnetic focusing experiment using Helmholtz coil

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.