Estimation of discharge plasma parameters in flow past blunted body under conditions of unsteady MHD interaction

2019 ◽  
Author(s):  
M. A. Yadrenkin ◽  
E. K. Shipko
Keyword(s):  
Discharge Plasma ◽  
Plasma Parameters ◽  
Flow Past ◽  
Blunted Body

scholarly journals PLASMA CHARACTERISTICS IN SQUARE PULSE ARC DISCHARGE OF PLASMA CATHODE ELECTRON SOURCE DEVICE

2013 ◽  
Vol 16 (2) ◽  
Author(s):  
Agus Purwadi ◽  
Bambang Siswanto ◽  
Wirjoadi . ◽  
Lely Susita R.M. ◽  
Sudjatmoko .
Keyword(s):  
Discharge Plasma ◽  
Arc Discharge ◽  
Debye Length ◽  
Electron Plasma ◽  
Pulse Mode ◽  
Electron Source ◽  
Anode Chamber ◽  
Plasma Current ◽  
Plasma Parameters ◽  
Plasma Cathode

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.

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

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.

Investigation of the helicon discharge plasma parameters in a hybrid RF plasma system

2016 ◽  
Vol 42 (3) ◽  
pp. 290-292 ◽  
Author(s):  
A. F. Aleksandrov ◽  
A. K. Petrov ◽  
K. V. Vavilin ◽  
E. A. Kralkina ◽  
P. A. Neklyudova ◽  
...  
Keyword(s):  
Discharge Plasma ◽  
Rf Plasma ◽  
Plasma Parameters ◽  
Plasma System

Study on the effect of target on plasma parameters of magnetron sputtering discharge plasma

2013 ◽  
Vol 20 (10) ◽  
pp. 103505 ◽  
Author(s):  
P. Saikia ◽  
B. Kakati ◽  
B. K. Saikia
Keyword(s):  
Magnetron Sputtering ◽  
Discharge Plasma ◽  
Plasma Parameters

Determination of gas-discharge plasma parameters in powerful metal halide vapor lasers

2017 ◽  
Author(s):  
Krassimir A. Temelkov ◽  
Stefka I. Slaveeva ◽  
Yulian I. Fedchenko
Keyword(s):  
Discharge Plasma ◽  
Gas Discharge ◽  
Metal Halide ◽  
Plasma Parameters ◽  
Gas Discharge Plasma

scholarly journals Gottwald Melborune (0–1) test for chaos in a plasma

2012 ◽  
Vol 19 (1) ◽  
pp. 53-56 ◽  
Author(s):  
D. R. Chowdhury ◽  
A. N. S. Iyengar ◽  
S. Lahiri
Keyword(s):  
Lyapunov Exponent ◽  
Correlation Dimension ◽  
Discharge Plasma ◽  
Glow Discharge Plasma ◽  
Plasma Parameters ◽  
Plasma System ◽  
Nonlinear Dynamical ◽  
Rich Variety ◽  
Self Organized ◽  
Self Organized Criticality

Abstract. Plasma is a highly complex system exhibiting a rich variety of nonlinear dynamical phenomena. In the last two decades or so there has been a spurt of growth in exploring unconventional nonlinear dynamical methods of analysis, like chaos theory, multi fractal analysis, self organized criticality etc. of experimental data from different plasma systems. Investigation of fluctuating plasma parameters is very important since they are correlated with transport of particles, and energy. In time series analysis, it is considered of key importance to determine whether the data measured from the system is regular, deterministically chaotic, or random. The two important parameters that are in general estimated are the correlation dimension and the Lyapunov exponent. Though correlation dimension helps in determining the complexity of a system, Lyapunov exponent reveals if the system is chaotic or not and also helps in prediction to some extent. In spite of its extensive usage, estimation of Lyapunov exponent can be quite tedious and sometimes suffers from some disadvantages like reliability in the presence of noise, requirement of phase space reconstruction etc., and hence it is necessary to explore other possibilities of estimating the chaoticity of a data. In this paper we have analysed for chaoticity, the nonlinear floating potential fluctuations from a glow discharge plasma system by the 0–1 test and compared it with the results obtained from Lyapunov exponent.

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