大学物理 ›› 2007, Vol. 26 ›› Issue (4): 45-45.

• 著者文摘 • 上一篇    下一篇

关于磁聚焦实验中荧光屏上显示的线段与所加电场之间的关系

陈秀洪 苏未安   

  1. 江西理工大学理学院,江西赣州341000
  • 出版日期:2007-04-25 发布日期:2007-04-20

Relationship between the line on screen and the length of voltage plate in measuring electronic specific charge with the method of magnetic focusing

  • Online:2007-04-25 Published:2007-04-20

摘要: 磁聚焦法是测定电子荷质比的一种有效方法,本文在此实验的基础上,研究了实验测量过程中荧光屏上显示扫描的线段随所加的电场的变化关系,证明了忽略电场的边缘效应时,电压偏转板并不改变电子束在荧光屏上的显示形状,但是增加了线段的长度,并且线段与水平轴的夹角也有所变化.

关键词: 磁聚焦, 电子荷质比, 电压偏转板

Abstract: It's a effect method in measuring electronic specific charge with the magnetic focusing. Based on this experiment, relationship between line scanned by electrons on screen and the length of voltage plate is studied, including the change of rotation angle and length of linsegment.

Key words: magnetic focusing, electronic specific charge, voltage plate

中图分类号: 

  • O463.1