Ramsauer-Townsend 效应与Child-Langmuir 定律实验

doi:10.16854 /j.cnki.1000-0712.170632

大学物理 ›› 2018, Vol. 37 ›› Issue (10): 47-53.doi: 10.16854 /j.cnki.1000-0712.170632

Ramsauer-Townsend 效应与Child-Langmuir 定律实验

赵元晟，贾晓瀚，姚红英

复旦大学物理学系，上海200433

收稿日期:2017-11-20 修回日期:2018-04-13 出版日期:2018-10-20 发布日期:2018-10-20
通讯作者: 姚红英，E-mail: yaohy@ fudan.edu.cn
作者简介:赵元晟( 1996—) ，男，浙江杭州人，复旦大学物理学系2014 级本科生

Ramsauer-Townsend effect and Child-Langmuir law experiments

ZHAO Yuan-sheng， JIA Xiao-han，YAO Hong-ying

Department of Physics，Fudan University，Shanghai 200433，China

Received:2017-11-20 Revised:2018-04-13 Online:2018-10-20 Published:2018-10-20

摘要/Abstract

摘要： 使用Hartree-极化势分析了用气体闸流管得到的Ramsauer-Townsend 效应曲线; 考虑了电子存在初速度等因素，定量分析了Child-Langmuir 定律实验中出现的lnI 和lnVa(Va为加速电压)之间的斜率小于3 /2 的现象.

关键词: Ramsauer-Townsend效应, Child-Langmuir 定律, 气体闸流管

Abstract: Using a Hartree-polarization potential，the curve of the Ramsauer-Townsend effect obtained by a thyratron is analyzed. We also quantitatively investigate the phenomenon which occurs in the experiment of the Child-Langmuir law that the slope between ln I and ln Va ( where Va is the accelerating voltage) is less than 3 /2，by considering that the electrons have initial velocity.

Key words: Ramsauer-Townsend effect, Child-Langmuir law, Thyratron

赵元晟，贾晓瀚，姚红英. Ramsauer-Townsend 效应与Child-Langmuir 定律实验[J]. 大学物理, 2018, 37(10): 47-53.

ZHAO Yuan-sheng， JIA Xiao-han，YAO Hong-ying. Ramsauer-Townsend effect and Child-Langmuir law experiments[J]. College Physics, 2018, 37(10): 47-53.

Ramsauer-Townsend 效应与Child-Langmuir 定律实验

Ramsauer-Townsend effect and Child-Langmuir law experiments

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