Assessment of plasma impedance probe for measuring electron density and collision frequency in a plasma with spatial and temporal gradients

2014 ◽  
Vol 21 (5) ◽  
pp. 053501 ◽  
Author(s):  
Mark A. Hopkins ◽  
Lyon B. King
Keyword(s):  
Electron Density ◽  
Collision Frequency ◽  
Plasma Impedance ◽  
Impedance Probe

scholarly journals Electron density and electron neutral collision frequency in the ionosphere using plasma impedance probe measurements

2008 ◽  
Vol 113 (A9) ◽  
pp. n/a-n/a ◽  
Author(s):  
E. Spencer ◽  
S. Patra ◽  
T. Andriyas ◽  
C. Swenson ◽  
J. Ward ◽  
...  
Keyword(s):  
Electron Density ◽  
Collision Frequency ◽  
Plasma Impedance ◽  
Impedance Probe ◽  
Probe Measurements

Measurement of absolute electron density with a plasma impedance probe

2005 ◽  
Vol 76 (2) ◽  
pp. 023503 ◽  
Author(s):  
David D. Blackwell ◽  
David N. Walker ◽  
William E. Amatucci
Keyword(s):  
Electron Density ◽  
Plasma Impedance ◽  
Impedance Probe

Characteristics of the plasma impedance probe with constant bias

2005 ◽  
Vol 12 (9) ◽  
pp. 093510 ◽  
Author(s):  
David D. Blackwell ◽  
David N. Walker ◽  
Sarah J. Messer ◽  
William E. Amatucci
Keyword(s):  
Constant Bias ◽  
Plasma Impedance ◽  
Impedance Probe

scholarly journals Study of the Propagation Characteristics of Terahertz Waves in a Collisional and Inhomogeneous Dusty Plasma with a Ceramic Substrate and Oblique Angle of Incidence

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Qingwen Rao ◽  
Guanjun Xu ◽  
Pengfei Wang ◽  
Zhengqi Zheng
Keyword(s):  
Electron Density ◽  
Dusty Plasma ◽  
Collision Frequency ◽  
Incident Angle ◽  
Ceramic Substrate ◽  
Dust Particles ◽  
Angle Of Incidence ◽  
Oblique Angle ◽  
Terahertz Waves ◽  
Thz Wave

In this paper, the propagation properties of a terahertz (THz) wave in a collisional and inhomogeneous dusty plasma with a ceramic substrate and oblique angle of incidence are studied using the scattering matrix method. The influence of the various corresponding parameters, such as the frequency of the THz wave, angle of incidence, electron density, radius and density of the dust particles, and the collision frequency, on the absorbance and transmittance is calculated. The results of the simulation indicate that an increase in the wave frequency increases the transmittance and decreases the absorbance. Moreover, the absorbance of a THz wave in a dusty plasma with a ceramic substrate increases with an increase in the incident angle, maximum electron density, coefficient of steepness, density and radius of the dust particles, and collision frequency. These results provide an important theoretical basis for the problem of communication blackout between ground and spacecraft.

Microwave Diagnostics of a Strong Arc Discharge Plasma in SF6

1975 ◽  
Vol 30 (8) ◽  
pp. 947-950 ◽  
Author(s):  
J. Musil ◽  
F. Žáček
Keyword(s):  
Electromagnetic Wave ◽  
Electron Density ◽  
Free Space ◽  
Discharge Plasma ◽  
Collision Frequency ◽  
Arc Discharge ◽  
Time Variable ◽  
Discharge Plasmas ◽  
Microwave Diagnostics ◽  
Basic Concepts

Abstract The paper deals with the microwave free-space diagnostics of high collision arc discharge plasmas. It is found that information about the electron density N and the collision frequency ν in such a plasma can be obtained from the energy transmitted through the plasma by an electromagnetic wave. The phase of the electromagnetic wave cannot be used since it is almost the same as that of a wave passing through vacuum. These basic concepts are verified experimentally at a frequency of 37.5 GHz. It is shown how the time dependence of the electron density in a plasma with constant and with time variable collision frequency may be evaluated.

scholarly journals Decay of the electron density and the electron collision frequency between successive discharges of a pulsed plasma jet in N2

2019 ◽  
Vol 28 (3) ◽  
pp. 035020 ◽  
Author(s):  
Marc van der Schans ◽  
Bart Platier ◽  
Peter Koelman ◽  
Ferdi van de Wetering ◽  
Jan van Dijk ◽  
...  
Keyword(s):  
Electron Density ◽  
Collision Frequency ◽  
Plasma Jet ◽  
Electron Collision ◽  
Pulsed Plasma ◽  
Electron Collision Frequency
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