Electrode sheath voltages for helium arcs between non-thermionic electrodes of iron, copper and titanium
Electrode sheath voltages for helium arcs between non-thermionic electrodes of iron, copper and titanium
复制标题
铁、铜和钛非热离子电极之间氦弧的电极护套电压
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
J J Lowke
中科院分区：
文献类型：
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作者：
Y Yokomizu;T Matsumura;W Y Sun;J J Lowke
测量了Fe、Cu和Ti非负离子电极间氦中大气压电弧的阴极鞘层电压和阳极鞘层电压之和分别为20.4、18.2和21.4V。这些值明显高于In、氩气和空气的值，它们都具有较低的电离电位。的值强烈地依赖于等离子体电离电位，但几乎是独立的电极功函数，这表明阴极鞘层电离，而不是场发射是一个主要的阴极过程的电子形成。
The sums of the cathode sheath and anode sheath voltages, , for atmospheric-pressure arcs in helium between non-thermionic electrodes of Fe, Cu and Ti, have been measured to be 20.4, 18.2 and 21.4 V respectively. These values are significantly higher than the values of in , argon and air, which all have a lower ionization potential. The values of strongly depend on the plasma ionization potential, but are almost independent of electrode work function, which suggests that cathode sheath ionization rather than field emission is a principal cathode process for electron formation.