Properties of Terahertz Waves Propagation in a Bounded Plasma Slab with High Collision Frequency and High Density

2010 ◽  
Author(s):  
Cheng-Xun Yuan ◽  
Zhong-Xiang Zhou ◽  
Xiao-Li Xiang
Keyword(s):  
Collision Frequency ◽  
High Density ◽  
Terahertz Waves ◽  
Bounded Plasma ◽  
Plasma Slab ◽  
Waves Propagation

Propagation Properties of Terahertz Waves in a Time-Varying Dusty Plasma Slab Using FDTD

2015 ◽  
Vol 43 (12) ◽  
pp. 4182-4186 ◽  
Author(s):  
Maoyan Wang ◽  
Mengxia Yu ◽  
Zhitao Xu ◽  
Guiping Li ◽  
Baojun Jiang ◽  
...  
Keyword(s):  
Dusty Plasma ◽  
Time Varying ◽  
Terahertz Waves ◽  
Plasma Slab ◽  
Propagation Properties

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.

Nonlinear radio-frequency response of a non-uniform plasma slab–condenser system with realistic density and velocity profiles

1972 ◽  
Vol 8 (2) ◽  
pp. 113-126 ◽  
Author(s):  
R. Ballieu ◽  
A. M. Messiaen ◽  
P. E. Vandenplas
Keyword(s):  
Plasma Sheath ◽  
Nonlinear Behaviour ◽  
Bounded Plasma ◽  
Plasma Slab ◽  
Order Of Magnitude ◽  
Classical Plasma ◽  
Sophisticated Model ◽  
Density Perturbations ◽  
Remarkable Agreement ◽  
Uniform Plasma

The nonlinear behaviour of a realistic one-dimensional bounded plasma (specifically, the classical plasma slab–condenser system) is computed by an iterative perturbation method. The results indicate, somewhat unexpectedly, that the influence of the r.f. field on the static density profile and on the resonance spectrum is much smaller than would have been inferred from a previous analysis of an unbounded plasma. However, this approach is inherently limited by the fact that, even for not too high r.f. fields, the electron density perturbations can become of the same order of magnitude as the static density in the tenuous plasma sheath near the wall. The resonance curves obtained with this sophisticated model show quite remarkable agreement with existing experimental data.

THE NONLINEAR INTERACTION OF A RADIO-FREQUENCY WAVE WITH AN INHOMOGENEOUS PLASMA SLAB: I. KINETICS OF HIGH-TEMPERATURE AIR IN THE PRESENCE OF AN ELECTROMAGNETIC FIELD

1965 ◽  
Vol 43 (11) ◽  
pp. 2021-2035 ◽  
Author(s):  
Robert J. Papa ◽  
Carl T. Case
Keyword(s):  
High Temperature ◽  
Radio Frequency ◽  
Electron Temperature ◽  
Collision Frequency ◽  
Inhomogeneous Plasma ◽  
Frequency Wave ◽  
Effective Collision Frequency ◽  
Plasma Slab ◽  
Radio Frequency Wave ◽  
Effective Collision

A radio-frequency wave is normally incident upon an inhomogeneous plasma slab. The plasma slab is composed of partially ionized high-temperature air corresponding to the characteristics of the plasma sheath surrounding hypersonic reentry vehicles. The isotropic part of the electron velocity distribution function is Maxwellian because of electron–electron collisions. The electromagnetic wave is intense enough to heat selectively the electron gas, altering the various electron production and loss processes. The high-frequency limit is considered, and expressions are obtained for the electron number density and effective collision frequency as a function of electron temperature. The effective collision frequency takes into account the effects of electron–neutral and electron–ion collisions for momentum transfer. From an energy balance equation, the electron temperature is found to be a function of both the frequency and field strength of the wave. The electron temperature is found also to exhibit an instability that gives rise to a hysteresis effect.

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