The effects of dust particle radius on the propagation characteristics of THz wave in a dusty plasma slab

2021 ◽  
Author(s):  
Qingwen Rao ◽  
Guanjun Xu ◽  
Zhengqi Zheng
Keyword(s):  
Dusty Plasma ◽  
Dust Particle ◽  
Particle Radius ◽  
Propagation Characteristics ◽  
Thz Wave ◽  
Plasma Slab

scholarly journals Study on the Propagation Characteristics of Terahertz Waves in Dusty Plasma with a Ceramic Substrate by the Scattering Matrix Method

Sensors ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 263
Author(s):  
Qingwen Rao ◽  
Guanjun Xu ◽  
Pengfei Wang ◽  
Zhengqi Zheng
Keyword(s):  
Dusty Plasma ◽  
Dust Particle ◽  
Matrix Method ◽  
Collision Frequency ◽  
Scattering Matrix ◽  
Ceramic Substrate ◽  
Propagation Characteristics ◽  
Propagation Properties ◽  
Scattering Matrix Method ◽  
Thz Waves

The propagation characteristics of terahertz (THz) waves incident vertically into inhomogeneous and collisional dusty plasma with a ceramic substrate are studied using the scattering matrix method (SMM). The effects of the incident wave frequency and plasma parameters, such as the maximal electron density, dust particle density, dust particle radius and collision frequency, on the reflectance and transmittance of THz waves in the dusty plasma are discussed. In addition, the differences of the propagation properties in the dusty plasma, with and without ceramic substrate, are analyzed. Meanwhile, the differences of the propagation properties in dusty plasma and common plasma, respectively, with ceramic substrate are also compared. Simulation results show that the substrate and dust particles have significant influence on the propagation characteristics of THz wave in plasma sheath. Finally, the transmission increases with the increase of electron density, dust density, dust particle radius and collision frequency.

Dust acoustic surface waves on a dusty plasma slab

2000 ◽  
Vol 7 (6) ◽  
pp. 2731-2732 ◽  
Author(s):  
L. Stenflo ◽  
P. K. Shukla ◽  
M. Y. Yu
Keyword(s):  
Surface Waves ◽  
Dusty Plasma ◽  
Dust Acoustic ◽  
Plasma Slab ◽  
Acoustic Surface Waves

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 Propagation Characteristics of Oblique Incident Terahertz Wave in Nonuniform Dusty Plasma

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Yunhua Cao ◽  
Haiying Li ◽  
Zhe Wang ◽  
Zhensen Wu
Keyword(s):  
Dusty Plasma ◽  
Terahertz Wave ◽  
Dust Particles ◽  
Number Density ◽  
Propagation Characteristics ◽  
Absorption Coefficients ◽  
Reflection And Transmission ◽  
Transmission Coefficients ◽  
Propagation Matrix ◽  
Transmission And Absorption

Propagation characteristics of oblique incident terahertz wave from the nonuniform dusty plasma are studied using the propagation matrix method. Assuming that the electron density distribution of dusty plasma is parabolic model, variations of power reflection, transmission, and absorption coefficients with frequencies of the incident wave are calculated as the wave illuminates the nonuniform dusty plasma from different angles. The effects of incident angles, number density, and radius of the dust particles on propagation characteristics are discussed in detail. Numerical results show that the number density and radius of the dust particles have very little influences on reflection and transmission coefficients and have obvious effects on absorption coefficients. The terahertz wave has good penetrability in dusty plasma.

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.

scholarly journals Magnetosonic solitons in a dusty plasma slab

2008 ◽  
Vol 74 (5) ◽  
pp. 601-605 ◽  
Author(s):  
M. MARKLUND ◽  
L. STENFLO ◽  
P. K. SHUKLA
Keyword(s):  
Dusty Plasma ◽  
Nonlinear Equations ◽  
Dusty Plasmas ◽  
Sharp Contrast ◽  
Dust Particles ◽  
Magnetized Plasmas ◽  
Nonlinear Structures ◽  
Magnetohydrodynamic Equations ◽  
Plasma Slab

AbstractThe existence of magnetosonic solitons in dusty plasmas is investigated. The nonlinear magnetohydrodynamic equations for a warm dusty magnetoplasma are thus derived. A solution of the nonlinear equations is presented. It is shown that, owing to the presence of dust, static structures are allowed. This is in sharp contrast to the formation of the so-called shocklets in usual magnetoplasmas. A comparatively small number of dust particles can thus drastically alter the behavior of the nonlinear structures in magnetized plasmas.

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