Low-frequency electrostatic waves in a bounded dusty magnetoplasma

2001 ◽  
Vol 65 (2) ◽  
pp. 97-105 ◽  
Author(s):  
P. K. SHUKLA ◽  
A. A. MAMUN
Keyword(s):  
Dusty Plasma ◽  
Acoustic Waves ◽  
Low Frequency ◽  
Lower Hybrid ◽  
Ion Acoustic Waves ◽  
Electrostatic Waves ◽  
Magnetized Dusty Plasma ◽  
Convective Cells ◽  
Hybrid Waves ◽  
Lower Hybrid Waves

A rigorous theoretical investigation is made of obliquely propagating low-frequency electrostatic waves in a cylindrically bounded magnetized dusty plasma. A number of different modes, such as modified convective cells, coupled ion-cyclotron and dust-ion-acoustic waves, modified lower-hybrid waves, coupled dust-cyclotron and dust-acoustic waves, etc., are investigated. It is shown that the effects of the cylindrical boundary of the dusty plasma system, the external magnetic field, and the obliqueness (of the propagating modes) significantly modify the dispersion properties of these different low-frequency electrostatic waves. The implications of our results for laboratory dusty magnetoplasmas are briefly pointed out.

Ion-beam driven lower hybrid waves in a magnetized dusty plasma

2013 ◽  
Vol 20 (6) ◽  
pp. 063701 ◽  
Author(s):  
Ved Prakash ◽  
Vijayshri ◽  
Suresh C. Sharma ◽  
Ruby Gupta
Keyword(s):  
Dusty Plasma ◽  
Ion Beam ◽  
Lower Hybrid ◽  
Magnetized Dusty Plasma ◽  
Hybrid Waves ◽  
Lower Hybrid Waves

Spectroscopic investigation of plasma turbulence

1979 ◽  
Vol 57 (6) ◽  
pp. 845-850 ◽  
Author(s):  
Y. S. Al-Shiraida ◽  
A. Hirose ◽  
H. M. Skarsgard
Keyword(s):  
Acoustic Waves ◽  
Energy Transport ◽  
Low Frequency ◽  
Skin Layer ◽  
Lower Hybrid ◽  
Direct Energy ◽  
Main Discharge ◽  
Hybrid Waves ◽  
The University ◽  
Lower Hybrid Waves

Optical studies of plasma fluctuations have been carried out in a toroidal, high-voltage discharge—the Plasma Betatron experiment at the University of Saskatchewan. Following the formation of the helium plasma, of density 1019–1020 m−3, by rf preionization and a preheating field, the electric field (≤ 8 kV/m) of the main discharge is applied parallel to the steady toroidal magnetic field of 0.3 T. Forbidden lines and satellites observed near the He I 21P–41D (4922 Å) and 23P–43D (4471 Å) lines show that low [Formula: see text] and high (ω ~ ωpe) frequency fluctuations are present at early times (t < 2 μs). The rms field strengths are comparable, at [Formula: see text]. An analysis is given of the possible role of these fluctuations in the rapid thermal transport previously observed from the current skin layer to the interior of the plasma. Direct energy transport by propagating electron plasma or ion acoustic waves is shown to be insignificant. However, the low frequency field strength is sufficient to allow for an explanation in terms of enhanced thermal diffusion due to lower hybrid waves.

scholarly journals Proparyation of Low frequency microwave in dusty Plasma

2008 ◽  
Vol 5 (3) ◽  
pp. 374-378
Author(s):  
Baghdad Science Journal
Keyword(s):  
Dusty Plasma ◽  
Acoustic Waves ◽  
Coupling Parameter ◽  
Low Frequency ◽  
Dust Particles ◽  
Ion Acoustic Waves ◽  
Electrostatic Waves ◽  
Wave Dynamics ◽  
Special Cases ◽  
Low Frequency Waves

The numerical simulation for the low frequency waves in dusty plasma has been studied. The studying was done by taking two special cases depending on the direction of the propagation of the wave:First, when the propagation is parallel to the magnetic field K//B,this mode is called acoustic mode.Second,when K B this mode is called cyclotron mode.In addition, every one of the two modes divided into two modes depending on the range of the frequency.The Coulomb coupling parameter was studied, with temperature T,density of the dust particles Nd ,and the charge of the particle Qd.The low frequency electrostatic waves in dusty grains were studied. Also, the properties of ion-acoustic waves and ion-cyclotron waves are shown to modify even through the dust grains do not participate in the wave dynamics. If the dust dynamics induced in the analysis, new “ dust modes “ appear.

Excitation of lower hybrid waves by electron beams in finite geometry plasmas. Part 2. Surface waves

1978 ◽  
Vol 19 (2) ◽  
pp. 295-299
Author(s):  
Réal R. J. Gagné ◽  
Magdi M. Shoucri
Keyword(s):  
Electron Beam ◽  
Surface Waves ◽  
Electron Beams ◽  
Low Frequency ◽  
Finite Geometry ◽  
Dispersion Relations ◽  
Lower Hybrid ◽  
Small Density ◽  
Hybrid Waves ◽  
Lower Hybrid Waves

The dispersion relations for the quasi-static lower hybrid surface waves are derived. Conditions for their existence and their linear excitation by a small density electron beam are discussed. Instabilities appearing in low-frequency surface waves are also discussed.

scholarly journals Modified Dust-Lower-Hybrid Waves in Quantum Plasma

2018 ◽  
Vol 2 (2) ◽  
pp. 11-21
Author(s):  
Abdul Rauf ◽  
I. Zeba ◽  
Muhammad Saqlain
Keyword(s):  
Dusty Plasma ◽  
Graphical Analysis ◽  
Quantum Plasma ◽  
Lower Hybrid ◽  
Hybrid Wave ◽  
Lower Hybrid Wave ◽  
Quantum Hydrodynamic Model ◽  
Fermi Temperature ◽  
Hybrid Waves ◽  
Lower Hybrid Waves

Dust-lower-hybrid waves in quantum plasma have been studied. The dispersion relation of the dust-lower-hybrid wave has been examined using the quantum hydrodynamic model of plasma in an ultra-cold Fermi dusty plasma in the presence of a uniform external magnetic field. Graphical analysis shows that the electron Fermi temperature effect and the quantum corrections give rise to significant effects on the dust-lower-hybrid wave of the magnetized quantum dusty plasma.

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