Axial variation of plasma parameters in a multi-dipole discharge plasma in the presence of an ion extraction grid

Plasma parameters in Plasma Cathode Electron Source Device (PCESD) are very important things because they will determine the eficiency of its electron extraction. Square pulse mode of PCESD’s arc discharge plasma current can be obtained by using Pulse Forming Network (PFN) circuits which is called Arc Discharge Power Supply (ADPS). The square pulse mode is necessity to simplify in electron irradiation dose calculation. ADPS is connected with Hollow Anode Chamber (HAC) which is placed inside of PCESD to produce arc discharge plasma. The value of arc discharge plasma current is the main key to determine plasma parameters that can be measured by using Rogowski coil. The value of the arc discharge plasma current is IADPS = 206.30 A with pulse width  = 80 μs. Whereas the plasma parameters values inside of the HAC are: the electron plasma density ne = (16.85  1019) m-3, electron plasma temperature Te = 2.609 eV, electron plasma frequency fe = 116.74 GHz, and Debye length λD = 9.958 µm respectively.

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Effect of Pressure and Hot Filament Cathode on Some Plasma Parameters of Hollow Anode Argon Glow Discharge Plasma

American Journal of Modern Physics ◽

10.11648/j.ajmp.20160503.12 ◽

2016 ◽

Vol 5 (3) ◽

pp. 30 ◽

Cited By ~ 1

Author(s):

Sh. Kh. Al-Hakary

Keyword(s):

Glow Discharge ◽

Discharge Plasma ◽

Glow Discharge Plasma ◽

Plasma Parameters ◽

Effect Of Pressure ◽

Hollow Anode ◽

Hot Filament

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COMPOSITE Cu-Cr MATERIALS UNDER THERMAL ACTION OF ELECTRIC ARC DISCHARGE PLASMA

10.46813/2021-131-098 ◽

2021 ◽

pp. 98-101

Author(s):

A. Murmantsev ◽

A. Veklich ◽

V. Boretskij ◽

M. Bartlová ◽

L. Dostál ◽

...

Keyword(s):

Discharge Plasma ◽

Arc Discharge ◽

Plasma Temperature ◽

Thermal Action ◽

Optical Emission ◽

Electric Arc ◽

Composite Electrodes ◽

Plasma Parameters ◽

Arc Discharges ◽

The Impact

The results of optical emission spectroscopy (OES) investigation of plasma of electric arc discharges in steadystate mode between Cu-Cr composite electrodes, manufactured at different sintered temperatures: 750, 850, 950 or 1050 °C, is presented. In particular, the impact of sintering temperature on erosion resistanceof such composite materials, which was determined in indirect manner by estimation of metal vapours content in the midsection of discharge gaps, is studied by the analysis of plasma parameters. These contents were calculated in assumption of local thermodynamic equilibrium (LTE) on the base of experimentally obtained radial distributions of plasma temperature and electron density.

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