Influence of the initial velocity of cathode plasma on electron and ion flow kinetics in vacuum discharge | Izvestiya vuzov. Fizika. 2025. № 10. DOI: 10.17223/00213411/68/10/3

Influence of the initial velocity of cathode plasma on electron and ion flow kinetics in vacuum discharge

A theoretical analysis of the collisionless expansion mechanism of cathode plasma injected into a vacuum gap in pulsed-periodic emission mode was conducted using the kinetic approximation, with varying average flow momentum. It was shown that imparting a nonzero average momentum to the injected flow at the thermal pulse level significantly alters the expansion velocity of the emission boundary, which is several times greater than the thermal velocities of particle ensembles in the cathode plasma. The obtained results provide a deeper understanding of the physical processes that determine the main parameters of collisionless plasma expansion.

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Keywords

vacuum discharge, collisionless plasma, Vlasov kinetic equation, virtual cathode

Authors

Name	Organization	E-mail
Kozyrev Andrey V.	Institute of High Current Electronics of the Siberian Branch of the Russian Academy of Sciences	kozyrev@to.hcei.tsc.ru
Kozhevnikov Vasily Yu.	Institute of High Current Electronics of the Siberian Branch of the Russian Academy of Sciences	v.y.kozhevnikov@yandex.ru

Всего: 2

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