Small radius capacitive discharges

Tarnev, Kh.; Pavlova, Rositsa

doi:10.1063/1.5082066

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2019

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“…According to the general properties of the gas discharges, the direction of the time averaged electric field coincides with the direction of the time averaged particle fluxes. Results in Tarnev & Pavlova (2018) also confirm that the shape of the ion velocity profiles coincides with the shape of the time averaged electric field.…”

Section: Resultssupporting

confidence: 57%

Simultaneous existence of stochastic and ohmic heating in capacitive discharges

Tarnev

Pavlova

2019

J. Plasma Phys.

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A one-dimensional particle-in-cell/Monte Carlo (PIC/MCC) model of low-pressure capacitive discharges with a large discharge gap is presented in the paper. The results from the model are for the dependence of the plasma parameters on the pressure and on the discharge radius. The study is directed to the heating mechanisms in the discharge. It is shown that the ohmic (Joule) heating in the plasma bulk could act simultaneously with the stochastic heating in the region of the plasma–sheath boundary. In confirmation of the results of the model, experimental results showing qualitatively the same behaviour are presented.

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Section: Resultssupporting

confidence: 57%