An experiment on the velocity distribution of thermionic electrons

An experiment on the velocity distribution of thermionic electrons
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热电子速度分布实验

DOI:
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发表时间:
2010
期刊:
影响因子:
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通讯作者:
R. M. Sperandeo
R. M. Sperandeo
中科院分区:
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文献类型:
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作者:
O. R. Battaglia;C. Fazio;I. Guastella;R. M. Sperandeo

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本文介绍了一个通过分析二极管和三极管的I-V特性,得到电子速度分布的本科实验。这个实验让学生可以更专注于分布函数,而不是因为电子发射的复杂性而产生的困难。通过一个简单的模型,可以用麦克斯韦分布来描述真空管阴极发射电子的速度分布。
This paper describes an undergraduate experiment that yields the velocity distribution of thermionic electrons by analyzing the I-V characteristics of diodes and triodes. The experiment allows students to focus on the distribution function more than on difficulties arising from the complexity of thermionic emission. By using a simple model, the velocity distribution of thermionic electrons emitted by the vacuum tube cathode can be described by Maxwell’s distribution.