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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Numerical analyses of hydrogen plasma generation by nanosecond pulsed high voltages at near-atmospheric pressure
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Numerical analyses of hydrogen plasma generation by nanosecond pulsed high voltages at near-atmospheric pressure

机译：接近大气压的纳秒脉冲高压产生氢等离子体的数值分析

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摘要

Dynamic processes of capacitively coupled hydrogen plasmas driven by nanosecond pulsed high voltages at near-atmospheric pressure are investigated with particle-in-cell simulations. It is found that propagation of an ionization front leads to a rapid increase in plasma density and the characteristics of the ionization front propagation are in good agreement with earlier experimental observations. The simulation has also revealed that electrons can form a non-Maxwellian distribution in the cathode sheath despite the high gas pressure. Therefore, the exact heating rates of such plasmas can be obtained only from such kinetic calculations as we have employed in this study.
机译：通过粒子内模拟研究了由纳秒级脉冲高压在接近大气压下驱动的电容耦合氢等离子体的动态过程。发现电离前沿的传播导致等离子体密度的快速增加，并且电离前沿的传播特性与早期的实验观察非常吻合。模拟还显示，尽管气压很高，但电子仍可以在阴极鞘层中形成非麦克斯韦分布。因此，只能从我们在本研究中采用的动力学计算中获得这种等离子体的精确加热速率。

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