scholarly journals THERMODYNAMIC REASONS OF AGGLOMERATION OF DUST PARTICLES IN THE THERMAL DUSTY PLASMA

2003 ◽  
Vol 6 (4) ◽  
pp. 687 ◽  
Author(s):  
Vishnyakov ◽  
Dragan
Keyword(s):  
Dusty Plasma ◽  
Dust Particles

Future lunar missions and investigation of dusty plasma processes on the Moon

2013 ◽  
Vol 79 (4) ◽  
pp. 405-411 ◽  
Author(s):  
SERGEY I. POPEL ◽  
LEV M. ZELENYI
Keyword(s):  
Dusty Plasma ◽  
Lunar Surface ◽  
Dust Particles ◽  
Maximum Height ◽  
Charged Dust ◽  
The Moon ◽  
Plasma System ◽  
Lunar Dust ◽  
The Impact ◽  
Dusty Plasma System

AbstractFrom the Apollo era of exploration, it was discovered that sunlight was scattered at the terminators giving rise to “horizon glow” and “streamers” above the lunar surface. Subsequent investigations have shown that the sunlight was most likely scattered by electrostatically charged dust grains originating from the surface. A renaissance is being observed currently in investigations of the Moon. The Luna-Glob and Luna-Resource missions (the latter jointly with India) are being prepared in Russia. Some of these missions will include investigations of lunar dust. Here we discuss the future experimental investigations of lunar dust within the missions of Luna-Glob and Luna-Resource. We consider the dusty plasma system over the lunar surface and determine the maximum height of dust rise. We describe mechanisms of formation of the dusty plasma system over the Moon and its main properties, determine distributions of electrons and dust over the lunar surface, and show a possibility of rising dust particles over the surface of the illuminated part of the Moon in the entire range of lunar latitudes. Finally, we discuss the effect of condensation of micrometeoriod substance during the expansion of the impact plume and show that this effect is important from the viewpoint of explanation of dust particle rise to high altitudes in addition to the dusty plasma effects.

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.

Investigation an Effective Interaction Potential of Dust Particles in Nonideal Dusty Plasma

2010 ◽  
Vol 51 (6) ◽  
pp. 514-518 ◽  
Author(s):  
T. S. Ramazanov ◽  
S. K. Kodanova ◽  
T. T. Daniyarov ◽  
Zh. A. Moldabekov
Keyword(s):  
Dusty Plasma ◽  
Interaction Potential ◽  
Effective Interaction ◽  
Dust Particles

Effect of an Arbitrary Dust Size Distribution Dust Particles for Vortex-Like Ion Distribution Dusty Plasma

2009 ◽  
Vol 52 (3) ◽  
pp. 517-522
Author(s):  
Wei Ju-Na ◽  
Shi Yu-Ren ◽  
He Guang-Jun ◽  
Jiang Xin ◽  
Duan Wen-Shan ◽  
...  
Keyword(s):  
Size Distribution ◽  
Dusty Plasma ◽  
Dust Particles ◽  
Ion Distribution ◽  
Dust Size Distribution

Analysis of the interaction between particles in non-ideal quasi-equilibrium extended systems

2010 ◽  
Vol 76 (3-4) ◽  
pp. 593-602
Author(s):  
O. S. VAULINA ◽  
E. A. LISIN ◽  
A. V. GAVRIKOV ◽  
O. F. PETROV ◽  
V. E. FORTOV
Keyword(s):  
Inverse Problem ◽  
Radio Frequency ◽  
Dusty Plasma ◽  
Statistical Physics ◽  
Dust Particles ◽  
Langevin Equations ◽  
Quasi Equilibrium ◽  
Experimental Application ◽  
Extended Systems ◽  
Radio Frequency Discharge

AbstractTwo techniques for the analysis of the interaction between particles in non-ideal quasi-equilibrium extended systems are considered. The first technique is based on a solution of the inverse problem describing the movement of dust particles by a system of Langevin equations. The second technique proceeds from the basic integral approaches of statistical physics. The conditions for the correct use of these techniques are presented, together with the results of their experimental application for the analysis of inter-grain interactions in the dusty plasma of radio frequency discharge.

Explosion dynamics of dusty plasma liquids induced by laser ablation on suspended dust particles

2006 ◽  
Vol 89 (10) ◽  
pp. 101503 ◽  
Author(s):  
Hong-Yu Chu ◽  
Chen-Ting Liao ◽  
Lin I
Keyword(s):  
Laser Ablation ◽  
Dusty Plasma ◽  
Dust Particles ◽  
Suspended Dust

Magnetoacoustic modes in a magnetized dusty plasma

1995 ◽  
Vol 53 (3) ◽  
pp. 317-334 ◽  
Author(s):  
N. N. Rao
Keyword(s):  
Acoustic Wave ◽  
Dusty Plasma ◽  
Acoustic Waves ◽  
Acoustic Mode ◽  
Dust Particles ◽  
Ion Acoustic Wave ◽  
Magnetized Dusty Plasma ◽  
Magnetoacoustic Waves ◽  
Component Plasma ◽  
Density Perturbations

The existence of various types of (fast) magnetoacoustic modes in different frequency regimes in a magnetized dusty plasma consisting of electrons, ions and dust particles is investigated. The analysis is carried out using an effective two-fluid MHD-like model which allows for the non-frozen motion of the component fluids. For frequencies much smaller than the dust particle gyro- frequency, we obtain a magnetoacoustic mode that is a generalization of the usual compressional fast hydromagnetic wave in an electron—ion plasma. In the higher-frequency regimes, we show the existence of two new types of modes called ‘Dust-magnetoacoustic waves’. Both modes are accompanied by compressional magnetic field and plasma number density perturbations, and are the electromagnetic generalizations of the dust-acoustic waves in an unmagnetized dusty plasma with thermal electrons and ions. For a two- component plasma, all three modes degenerate into the same fast magneto- acoustic wave found in the usual electron—ion plasmas. We also obtain another novel type of magneto-acoustic mode called a ‘dust—ion-magneto- acoustic wave’, which is an electromagnetic generalization of the dust—ion- acoustic wave. The dispersion relations as well as the frequency regimes for the existence of the various modes are explicitly obtained. An alternative derivation of the relevant governing equations using an approach similar to that employed in so-called ‘electron magnetohydrodynamics’ (EMHD) is also presented.

Study of the Dust-Free Region Near an Electric Probe and the Dust Particles Oscillations in Dusty Plasma

2013 ◽  
Vol 53 (4-5) ◽  
pp. 419-425 ◽  
Author(s):  
K. N. Dzhumagulova ◽  
T. S. Ramazanov ◽  
Y. A. Ussenov ◽  
M. K. Dosbolayev ◽  
R. U. Masheeva
Keyword(s):  
Dusty Plasma ◽  
Dust Particles ◽  
Electric Probe ◽  
Free Region
Sign in / Sign up

Export Citation Format

Share Document