A new BGK model to compute the scattering characteristics of electromagnetic waves by weakly ionized dusty plasma shroud

2020 ◽  
Vol 27 (2) ◽  
pp. 023701 ◽  
Author(s):  
Song-hua Liu ◽  
Cong-kuan Zhu ◽  
Li-xin Guo ◽  
Jiang-ting Li ◽  
Li Dan ◽  
...  
Keyword(s):  
Dusty Plasma ◽  
Electromagnetic Waves ◽  
Bgk Model ◽  
Weakly Ionized

On the theory of electromagnetic waves and instabilities in multi-species weakly ionized plasmas in external d.c. electric field

1987 ◽  
Vol 38 (1) ◽  
pp. 53-77 ◽  
Author(s):  
B. S. Milić ◽  
S. R. Krstić
Keyword(s):  
Electric Field ◽  
Electromagnetic Waves ◽  
Kinetic Equations ◽  
Mean Free Path ◽  
Short Wave ◽  
Distribution Functions ◽  
Bgk Model ◽  
Ionized Plasmas ◽  
Weakly Ionized ◽  
The One

Electromagnetic modes with the electric vector of the wave lying in the plane defined by the wave vector and the external d.c. electric field are studied theoretically in weakly ionized plasmas with several sorts of ions. The corresponding instability criteria are also given. The analysis is based on kinetic equations with BGK model collision integrais for the one-particle distribution functions of the charged constituents (electrons and all sorts of ions). The linear theory of perturbation is applied. Special attention is given to the long-wave domain (modal wavelengths much larger than the electron mean free path): it is in this domain that the instabilities are found to set in first as the electron drift is gradually increased. The increments of these instabilities are, however, smaller than in the short-wave domain which was mainly studied before. Apart from the modes which exist in weakly ionized plasmas with only one ion species, and which re-appear in the case studied here with somewhat altered characteristics, a new slow mode, specifie for multi-species weakly ionized plasmas, is found. Its phase velocity is below the electron thermal velocity, and its existence, as well as the conditions of excitation of the corresponding instability, depend on the plasma composition and non-isothermality (viz. the ratio Te/Ti). In some situations, two such modes are possible. The analysis of the instabilities is completed by a brief description of two (sometimes three) branches of ion acoustic instability, specific for the multi-species plasmas and propagating strictly along the direction of the external electric field.

Excitation of electromagnetic quasi-perpendicular ion cyclotron waves in collisional plasmas

1983 ◽  
Vol 29 (1) ◽  
pp. 21-34 ◽  
Author(s):  
B. S. Milić ◽  
N. R. Brajušković
Keyword(s):  
Electromagnetic Waves ◽  
Kinetic Equations ◽  
Mean Free Path ◽  
Electron Drift ◽  
Bgk Model ◽  
Plasma Parameters ◽  
Electron Collisions ◽  
Ion Cyclotron Waves ◽  
Ion Cyclotron ◽  
Weakly Ionized

The process of spontaneous excitation of electromagnetic (non-potential) and quasi-perpendicular (with respect to the external magnetic field) ion cyclotron waves by electron drift in a weakly ionized plasma is analysed. An infinite plasma placed in mutually parallel d.c. electric and magnetic fields is considered, and its dynamics is described by kinetic equations with BGK model collision integrals. The threshold electron drift necessary for the onset of the corresponding ion cyclotron instability is evaluated. It is shown that the instability sets in first for wavelengths much larger than the electron mean free path, so that the electron collisions, dominant in this range of wavelengths, play a facilitating rather than an impeding role in this process. The results are compared with those for the spontaneous excitation of electrostatic (potential) quasi-perpendicular ion cyclotron waves and, for the same set of plasma parameters, the threshold drift is found to be smaller for the electromagnetic waves.

Propagation of electromagnetic waves in a weakly ionized dusty plasma

2015 ◽  
Vol 48 (46) ◽  
pp. 465201 ◽  
Author(s):  
Jieshu Jia ◽  
Chengxun Yuan ◽  
Ruilin Gao ◽  
Ying Wang ◽  
Yaoze Liu ◽  
...  
Keyword(s):  
Dusty Plasma ◽  
Electromagnetic Waves ◽  
Weakly Ionized

Scattering characteristics of electromagnetic waves in time and space inhomogeneous weakly ionized dusty plasma sheath

2018 ◽  
Vol 25 (5) ◽  
pp. 053707 ◽  
Author(s):  
Li-xin Guo ◽  
Wei Chen ◽  
Jiang-ting Li ◽  
Yi Ren ◽  
Song-hua Liu
Keyword(s):  
Dusty Plasma ◽  
Electromagnetic Waves ◽  
Plasma Sheath ◽  
Time And Space ◽  
Weakly Ionized

Linear coupling of electromagnetic waves in inhomogeneous weakly-ionized media

1983 ◽  
Vol 141 (10) ◽  
pp. 257 ◽  
Author(s):  
V.V. Zheleznyakov ◽  
Vit V. Kocharovskii ◽  
Vlad V. Kocharovskii
Keyword(s):  
Electromagnetic Waves ◽  
Linear Coupling ◽  
Weakly Ionized

Electromagnetic waves in a polydisperse dusty plasma

2013 ◽  
Vol 20 (10) ◽  
pp. 102106 ◽  
Author(s):  
V. V. Prudskikh ◽  
Yu. A. Shchekinov
Keyword(s):  
Dusty Plasma ◽  
Electromagnetic Waves

Research on the propagation properties of THz circularly polarized wave in BGK model inhomogeneous dusty plasma

2020 ◽  
Vol 27 (9) ◽  
pp. 093702
Author(s):  
Liu Yutong ◽  
Chen Wei ◽  
Yang Lixia ◽  
Huang Zhixiang ◽  
Guo Lixin ◽  
...  
Keyword(s):  
Dusty Plasma ◽  
Bgk Model ◽  
Circularly Polarized ◽  
Propagation Properties
Sign in / Sign up

Export Citation Format

Share Document