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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Analysis of ionization non-equilibrium in the near-cathode region of atmospheric-pressure arcs
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Analysis of ionization non-equilibrium in the near-cathode region of atmospheric-pressure arcs

机译:大气压电弧近阴极区域的电离不平衡分析

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摘要

Deviations from ionization equilibrium in the near-cathode region of a high-pressure high-current arc are analysed. Estimates and numerical calculations are given for an atmospheric-pressure argon arc. It is found that the deviations extend over the distance of about 100 µm from the cathode surface and are caused by ambipolar diffusion; convective transport of the charged particles, barodiffusion, thermal diffusion, diffusion caused by thermal non-equilibrium between electrons and heavy particles, and transport due to the presence of the electric current are minor effects.
机译:分析了高压大电流电弧在阴极附近区域的电离平衡偏差。给出了大气压氩弧的估计值和数值计算。发现偏离是在距阴极表面约100 µm的距离上扩展的,并且是由双极性扩散引起的。带电粒子的对流传输,重扩散,热扩散,电子与重粒子之间的热不平衡引起的扩散以及由于电流的存​​在而产生的传输都是较小的影响。

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