Features of the Distribution Process of the Electromagnetic Field Frequency Components in the High-Frequency Torch Discharge Plasma

2015 ◽  
Vol 1084 ◽  
pp. 129-132
Author(s):  
Yuriy Lutsenko ◽  
Ivan Miskun ◽  
Ekaterina Zelenetskaya
Keyword(s):  
Electric Field ◽  
Radial Component ◽  
Temperature Plasma ◽  
Field Frequency ◽  
Torch Discharge ◽  
Resonant Character ◽  
Distribution Process ◽  
Frequency Components ◽  
Langmuir Frequency ◽  
Two Temperature

The measurements of axial harmonics distribution of the radial component of the electric field have been made for a torch discharge burning in argon and argon-air mixture. The resonant character of the electric field fourth harmonic attenuation has been found. Using the Saha formula for the two-temperature plasma the electrons concentration and the electrons Langmuir frequency of the investigated plasma discharge have been evaluated.

Nonlinear Electrodynamic Effects of the Torch Discharge Argon Plasma

2015 ◽  
Vol 1084 ◽  
pp. 152-157
Author(s):  
Yuriy Lutsenko ◽  
Ivan Miskun ◽  
Ekaterina Zelenetskaya
Keyword(s):  
Electric Field ◽  
Electron Concentration ◽  
High Frequency ◽  
Argon Plasma ◽  
Nonlinear Electrodynamic ◽  
Propagation Process ◽  
Fourth Harmonic ◽  
Torch Discharge ◽  
Resonant Character ◽  
Selective Influence

The measurements of the amplitude-frequency characteristics were done for the high-frequency torch discharge burning in argon. The resonant character of the electric field fourth harmonic attenuation was found. The axial harmonics distribution measurements of the electric field were done for the torch discharge burning in argon-air mixture. The electron concentration in the investigated plasma discharge was evaluated. The selective influence of the change in the electron concentration on the propagation process of the fourth harmonic of the electric field was found.

Langmuir solitons in a two-temperature plasma

1981 ◽  
Vol 26 (2) ◽  
pp. 309-316 ◽  
Author(s):  
B. Buti ◽  
M. Y. Yu
Keyword(s):  
Electric Field ◽  
Electron Temperature ◽  
Solitary Waves ◽  
Sound Speed ◽  
Finite Amplitude ◽  
Field Amplitude ◽  
Temperature Plasma ◽  
Electric Field Amplitude ◽  
Langmuir Solitons ◽  
Two Temperature

The existence of finite-amplitude Langnwir solitary waves in a two-electron-temperature plastia is investigated. A now type of soliton, in which the density depression and the electric field amplitude scale in the same manner, and which travels at the effective sound speed, has been found.

Formation of Regular Domain Structures in Quenched Ferroelectrics Under the Influence of an External High-frequency Electric Field

2019 ◽  
Vol 9 (3) ◽  
pp. 344-352 ◽  
Author(s):  
L.I. Stefanovich ◽  
O.Y. Mazur ◽  
V.V. Sobolev
Keyword(s):  
Lithium Niobate ◽  
Electric Field ◽  
Domain Structure ◽  
High Frequency ◽  
Evolution Equations ◽  
Regular Domain ◽  
Field Frequency ◽  
Domain Structures ◽  
Alternating Electric Field ◽  
Lithium Niobate Crystals

Introduction: Within the framework of the phenomenological theory of phase transitions of the second kind of Ginzburg-Landau, the kinetics of ordering of a rapidly quenched highly nonequilibrium domain structure is considered using the lithium tantalate and lithium niobate crystals as an example. Experimental: Using the statistical approach, evolution equations describing the formation of the domain structure under the influence of a high-frequency alternating electric field in the form of a standing wave were obtained. Numerical analysis has shown the possibility of forming thermodynamically stable mono- and polydomain structures. It turned out that the process of relaxation of the system to the state of thermodynamic equilibrium can proceed directly or with the formation of intermediate quasi-stationary polydomain asymmetric phases. Results: It is shown that the formation of Regular Domain Structures (RDS) is of a threshold character and occurs under the influence of an alternating electric field with an amplitude less than the critical value, whose value depends on the field frequency. The conditions for the formation of RDSs with a micrometer spatial scale were determined. Conclusion: As shown by numerical studies, the RDSs obtained retain their stability, i.e. do not disappear even after turning off the external electric field. Qualitative analysis using lithium niobate crystals as an example has shown the possibility of RDSs formation in high-frequency fields with small amplitude under resonance conditions

Wave propagation in the presence of a spatially uniform external periodic magnetic field in two-temperature plasma

1982 ◽  
Vol 28 (1) ◽  
pp. 93-101
Author(s):  
Sanjay Kumar Ghosh
Keyword(s):  
Magnetic Field ◽  
Wave Propagation ◽  
Fluid Model ◽  
Hydrodynamic Equations ◽  
Temperature Plasma ◽  
Uniform External Magnetic Field ◽  
Two Fluid Model ◽  
Excitation Conditions ◽  
Two Fluid ◽  
Two Temperature

Starting from the two-fluid model hydrodynamic equations, a dispersion relation is obtained for wave propagation through a two-temperature plasma perpendicular to the direction of the spatially uniform external magnetic field B0cosω0t and several excitation conditions are deduced.

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