The article presents the results of an experimental study and numerical modelling for the formation and development dynamics of a high-voltage transverse nanosecond discharge generated by a slot cathode in an argon medium at a pressure range of 1–10 Torr. Numerical modelling was carried out under similar experimental conditions for the processes of formation and propagation of ionisation waves, electron density distribution, excited atom and average electron energy in the discharge gap, including the cavity inside the cathode. At a pressure of p = 1 Torr, a classical version of a high-voltage discharge is demonstrated to take place with no penetration of the plasma into the cathode cavity and no observed hollow cathode effect. An increase in gas pressure to 5 Torr leads to a penetration of plasma into the cathode cavity with the formation of a cathodic potential drop (CPD) region. Electrons emitted from the side surfaces of the cavity pass through the CPD region without c...

中文翻译：

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氩气中带有扩展缝隙阴极的纳秒级气体放电过程的动力学

本文介绍了由缝隙阴极在1-10 Torr压力下在氩气介质中产生的高压横向纳秒放电的形成和发展动力学的实验研究和数值模型的结果。在类似的实验条件下，对电离波的形成和传播，电子密度分布，激发原子和放电间隙（包括阴极内部的空腔）中的平均电子能量的过程进行了数值模拟。在p = 1 Torr的压力下，发生了经典的高压放电，没有等离子体渗透到阴极腔中，也没有观察到空心阴极效应。气压增加到5 Torr会导致等离子体渗透到阴极腔中，并形成阴极电位降（CPD）区域。从腔体侧面发射的电子穿过CPD区域而不会产生...