Excitation of surface plasma waves by a density modulated electron beam at a conductor-dusty plasma interface

2011 ◽  
Vol 18 (5) ◽  
pp. 053704 ◽  
Author(s):  
Ruby Gupta ◽  
Suresh C. Sharma ◽  
Ved Prakash
Keyword(s):  
Electron Beam ◽  
Dusty Plasma ◽  
Plasma Waves ◽  
Surface Plasma ◽  
Surface Plasma Waves

Scattering of an unmagnetized sheet electron beam by surface plasma waves

1992 ◽  
Vol 35 (1) ◽  
pp. 58-65
Author(s):  
S. S. Moiseev ◽  
O. Yu. Naguchev ◽  
V. I. Tkachenko ◽  
V. N. Dubovik
Keyword(s):  
Electron Beam ◽  
Plasma Waves ◽  
Surface Plasma ◽  
Surface Plasma Waves ◽  
Sheet Electron Beam

scholarly journals Surface wave excitation by a density modulated electron beam in a magnetized dusty plasma cylinder

2013 ◽  
Vol 31 (3) ◽  
pp. 411-418 ◽  
Author(s):  
Ved Prakash ◽  
Suresh C. Sharma ◽  
Vijayshri ◽  
Ruby Gupta
Keyword(s):  
Growth Rate ◽  
Dispersion Relation ◽  
Dusty Plasma ◽  
Plasma Waves ◽  
Wave Excitation ◽  
Surface Plasma ◽  
Plasma Cylinder ◽  
Beam Density ◽  
Magnetized Dusty Plasma ◽  
Surface Plasma Waves

AbstractThis paper studies the surface plasma wave excitation via Cerenkov and fast cyclotron interaction by a density modulated electron beam propagating through a magnetized dusty plasma cylinder. The dispersion relation of surface plasma waves has been derived and it has been shown that the phase velocity of waves increases with increase in relative density δ(= nio/ne0, where ni0 is the ion plasma density and ne0 is the electron plasma density) of negatively charged dust grains. The beam radius is taken slightly less than the radius of dusty plasma cylinder. The frequency and the growth rate of the unstable wave instability increases with increase in the value of δ and normalized frequency ω/ωpe. The growth rate of the instability increases with the beam density and scales as one-third power of the beam density in Cerenkov interaction and square root of beam density in fast cyclotron interaction. The dispersion relation of surface plasma waves has been retrieved from the derived dispersion relation by considering that the beam is absent and there are no dust grains in the plasma cylinder.

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