The Hβ line dip shift measurements in wide range of plasma electron density

2019 ◽  
Vol 222-223 ◽  
pp. 215-222 ◽  
Author(s):  
Igor Savić ◽  
Zoran Mijatović ◽  
Teodora Gajo ◽  
Lazar Gavanski ◽  
Stevica Djurović
Keyword(s):  
Electron Density ◽  
Plasma Electron ◽  
Wide Range ◽  
Plasma Electron Density

Design and implementation of plasma electron density measurements based on FPGA with all-phase FFT for tokamak devices

2021 ◽  
Vol 92 (9) ◽  
pp. 093507
Author(s):  
Shuangbao Shu ◽  
Jin Lai ◽  
Zhiqiang Chen ◽  
Yong Wang ◽  
Yuzhong Zhang ◽  
...  
Keyword(s):  
Electron Density ◽  
Plasma Electron ◽  
Density Measurements ◽  
Design And Implementation ◽  
Plasma Electron Density

scholarly journals PARAMETERS OF HYDROGEN PLASMA STREAMS IN QSPA-M AND THEIR DEPENDENCE ON EXTERNAL MAGNETIC FIELD

2021 ◽  
pp. 61-64
Author(s):  
M.S. Ladygina ◽  
Yu.V. Petrov ◽  
D.V. Yeliseev ◽  
V.A. Makhlai ◽  
N.V. Kulik ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electron Density ◽  
Hydrogen Plasma ◽  
Experimental Studies ◽  
Optical Emission ◽  
Plasma Electron ◽  
Plasma Stream ◽  
Visible Radiation ◽  
Order Of Magnitude ◽  
Plasma Electron Density

Present experimental studies are aimed at analysis of hydrogen plasma stream parameters in various working regimes of QSPA-M operation. Temporal distributions of plasma electron density are reconstructed with optical emission spectroscopy. The magnetic field influence on plasma streams parameters is analyzed. It is shown that in regimes with additional magnetic field the plasma electron density increases by an order of magnitude in comparison with a density value without magnetic field. The plasma velocity and energy density parameters as well as their temporal behaviors were estimatedin different operating regimes of QSPA-M facility. Features of plasma visible radiation were analyzed. This information is important for QSPA-M applications in experiments on interaction of powerful plasma streams with material surfaces.

Investigation on Plasma Electron Density Distribution with Finite Holographic Interferometry

2015 ◽  
Vol 42 (1) ◽  
pp. 0102008
Author(s):  
雷岚 Lei Lan ◽  
曹娜 Cao Na ◽  
曹亮 Cao Liang ◽  
徐青 Xu Qing ◽  
韩长材 Han Changcai ◽  
...  
Keyword(s):  
Density Distribution ◽  
Electron Density ◽  
Holographic Interferometry ◽  
Electron Density Distribution ◽  
Plasma Electron ◽  
Plasma Electron Density

Reflection of Conductive Plane Covered by Double Inhomogeneous Plasma Slab

2012 ◽  
Vol 229-231 ◽  
pp. 941-944
Author(s):  
Fei Yan ◽  
Zhong Cai Yuan ◽  
Yong Wang ◽  
Shi Lian Gong ◽  
Zheng Li
Keyword(s):  
Functional Dependence ◽  
Inhomogeneous Plasma ◽  
Plasma Electron ◽  
Reflection Coefficients ◽  
Frequency Range ◽  
Wide Range ◽  
Plasma Slab ◽  
Electromagnetic Signals ◽  
Set Up ◽  
Plasma Electron Density

This paper presents numerical results in the form of graphs of the power reflection coefficients for electromagnetic signals normally incident upon a conductive plane covered with two layers of inhomogeneous plasma slabs. The plasma electron density varies only in the direction perpendicular to the plane. Parameters considered in the computation cover a relatively wide range and the functional dependence of the power reflection coefficients on these parameters is studied. The results indicate that in a rather broad frequency range, the electromagnetic attenuations by the double slabs obviously excel the sum of attenuations resulted from two plasma layers when each layer exits respectively. The structure presented is easy to set up, which is instructive for plasma stealth.

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