Study of the Effect of the Anode on EEDF and the Spatial Profile of the Electron Density in a Discharge with a Hollow Cathode in Helium

Article Physics, Fluids & Plasmas

Measurements and interpretation of EEDF in a discharge with a hollow cathode in helium: effect of the measuring probe and the anode on the form of the distribution function

S. N. Andreev et al.

Summary: Experimental and theoretical studies have been conducted on the electron energy distribution function in hollow cathode discharge plasma. It was found that under these conditions, low-energy electrons are significantly depleted, mainly due to electron absorption by the anode in close proximity.

PLASMA SOURCES SCIENCE & TECHNOLOGY (2022)

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Article Physics, Fluids & Plasmas

Electron sink on the Langmuir probe in plasma, its influence on measurements and methods to account for it

S. N. Andreev et al.

Summary: The study investigated the influence of the electron sink effect on probe measurements of EEDFs, plasma potential, and electron concentration. It was found that the shape of the EEDFs varied with distance from the cathode, mainly due to the nonlocal nature of EEDF formation in high-energy regions.

PLASMA SOURCES SCIENCE & TECHNOLOGY (2021)

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Article Engineering, Chemical

Spatial Variations of Plasma Parameters in a Hollow Cathode Discharge

S. N. Andreev et al.

Summary: The study experimentally investigated the transformations of electron energy distribution, their concentration, and plasma space potential along the discharge gap. A new measurement method was proposed, revealing a significant dynamic range in the electron energy distribution under different conditions. The results indicated a lower proportion of fast electrons near the anode.

PLASMA CHEMISTRY AND PLASMA PROCESSING (2021)

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Article Physics, Fluids & Plasmas