Simulation of the spatio-temporal evolution of the electron energy distribution function in a pulsed hollow-cathode discharge  

作　　者：N A ASHURBEKOV K O IMINOV K M RABADANOV G S SHAKHSINOV M Z ZAKARYAEVA M B KURBANGADZHIEVA 

机构地区：[1]Dagestan State University [2]Department of Physics,Harbin Institute of Technology [3]Institute of Physics,Dagestan Federal Research Center,Russian Academy of Sciences

出　　处：《Plasma Science and Technology》2023年第3期87-94,共8页等离子体科学和技术（英文版）

基　　金：supported by the Russian Foundation for Basic Research(No.20–32–90150);by State Assignment(No.FZNZ–2020–0002)。

摘　　要：This article presents the 2D simulation results of a nanosecond pulsed hollow cathode discharge obtained through a combination of fluid and kinetic models.The spatio-temporal evolution of the electron energy distribution function(EEDF)of the plasma column and electrical characteristics of the nanosecond pulsed hollow cathode discharge at a gas pressure of 5 Torr are studied.The results show that the discharge development starts with the formation of an ionization front at the anode surface.The ionization front splits into two parts in the cathode cavity while propagating along its lateral surfaces.The ionization front formation leads to an increase in the fast isotropic EEDF component at its front,as well as in the anisotropic EEDF component.The accelerated electrons enter the cathode cavity,which significantly contributes to the formation of the highenergy EEDF component and EEDF anisotropy.

关 键 词：pulsed nanosecond discharge electron energy distribution fuinction hollow cathode electron kinetics gas discharge 

分 类 号：O461[理学—电子物理学]