Axial structure of a plasma column produced by a large‐amplitude electromagnetic surface wave

1986 ◽  
Vol 59 (5) ◽  
pp. 1466-1472 ◽  
Author(s):  
I. Zhelyazkov ◽  
E. Benova ◽  
V. Atanassov
Keyword(s):  
Surface Wave ◽  
Plasma Column ◽  
Large Amplitude ◽  
Electromagnetic Surface Wave ◽  
Axial Structure

Propagation of a large‐amplitude surface wave in a plasma column sustained by the wave

1983 ◽  
Vol 54 (6) ◽  
pp. 3049-3052 ◽  
Author(s):  
E. Mateev ◽  
I. Zhelyazkov ◽  
V. Atanassov
Keyword(s):  
Surface Wave ◽  
Plasma Column ◽  
Large Amplitude

An estimation of the axial structure of surface-wave produced plasma column

2021 ◽  
Vol 28 (2) ◽  
pp. 023502
Author(s):  
Milan S. Kovačević ◽  
Ljubica Kuzmanović ◽  
Marko M. Milošević ◽  
Alexandar Djordjevich
Keyword(s):  
Surface Wave ◽  
Plasma Column ◽  
Axial Structure

Theoretical study of a plasma column sustained by an electromagnetic surface wave in the dipolar mode

1991 ◽  
Vol 45 (2) ◽  
pp. 137-152 ◽  
Author(s):  
E. Benova ◽  
I. Ghanashev ◽  
I. Zhelyazkov
Keyword(s):  
Surface Wave ◽  
Plasma Column ◽  
Electromagnetic Waves ◽  
Theoretical Study ◽  
Density Wave ◽  
Free Fall ◽  
Speed Of Light ◽  
Numerical Parameter ◽  
Electromagnetic Surface Wave ◽  
Plasma Radius

This paper presents a theoretical model of a plasma column sustained by an electromagnetic surface wave in the dipolar (m =1) mode for two different gas-discharge regimes: free-fall/diffusion and recombination respectively. The dispersion characteristics of the wave and the axial profiles of the plasma density, wave power, wavenumber and wave-field components for a given regime are specified by one numerical parameter σ = ωR/C, where ω is the angular wave frequency, R the plasma radius and c the speed of light, irrespective of the gas nature and pressure. It is established that there exists a ‘critical’ value of this parameter, σcr = 0·3726, below which a plasma is not likely to be sustained. A comparison between the axial structures of plasma columns sustained by electromagnetic waves in the dipolar and azimuthally symmetric modes is made. The model is in agreement with the available experimental results.

Large amplitude progressive interfacial waves

1979 ◽  
Vol 93 (3) ◽  
pp. 433-448 ◽  
Author(s):  
Judith Y. Holyer
Keyword(s):  
Free Surface ◽  
Surface Wave ◽  
Surface Waves ◽  
Large Amplitude ◽  
Phase Speed ◽  
Maximum Height ◽  
Interfacial Waves ◽  
Free Surface Waves ◽  
Lower Fluid ◽  
Over The Top

This paper contains a study of large amplitude, progressive interfacial waves moving between two infinite fluids of different densities. The highest wave has been calculated using the criterion that it has zero horizontal fluid velocity at the interface in a frame moving at the phase speed of the waves. For free surface waves this criterion is identical to the criterion due to Stokes, namely that there is a stagnation point at the crest of each wave. I t is found that as the density of the upper fluid increases relative to the density of the lower fluid the maximum height of the wave, for fixed wavelength, increases. The maximum height of a Boussinesq wave, which has the density almost the same above and below the interface, is 2·5 times the maximum height of a surface wave of the same wavelength. A wave with air over the top of it can be about 2% higher than the highest free surface wave. The point at which the limiting criterion is first satisfied moves from the crest for free surface waves to the point half-way between the crest and the trough for Boussinesq waves. The phase speed, momentum, energy and other wave properties are calculated for waves up to the highest using Padé approximants. For free surface waves and waves with air above the interface the maximum value of these properties occurs for waves which are lower than the highest. For Boussinesq waves and waves with the density of the upper fluid onetenth of the density of the lower fluid these properties each increase monotonically with the wave height.

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