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2018 , Vol. 37 >Issue 10: 47 - 53

DOI: https://doi.org/10.16854 /j.cnki.1000-0712.170632

Ramsauer-Townsend effect and Child-Langmuir law experiments

  • ZHAO Yuan-sheng ,
  • JIA Xiao-han ,
  • YAO Hong-ying
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  • Department of Physics，Fudan University，Shanghai 200433，China

Received date: 2017-11-20

  Revised date: 2018-04-13

  Online published: 2018-10-20

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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

Cite this article

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 . DOI: 10.16854 /j.cnki.1000-0712.170632

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