Excitation of surface plasma waves by an electron beam in a magnetized dusty plasma

Journal Article · Tue Sep 15 04:00:00 EDT 2009 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3216918· OSTI ID:21282135

Prakash, Ved; Sharma, Suresh C ^[1]

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1. Department of Physics, Maharaja Agrasen Institute of Technology, PSP Area Plot No. 1, Sector 22, Rohini, Delhi 110086 (India)

An electron beam drives surface plasma waves to instability on a vacuum magnetized dusty plasma interface and in a magnetized dusty plasma cylinder via Cerenkov and fast cyclotron interaction. The dispersion relation of a surface plasma wave has been derived and it has been shown that the phase velocity of waves increases with increase in relative density {delta}(=n{sub i0}/n{sub e0}), where n{sub i0} is the ion plasma density and n{sub e0} is the electron plasma density of negatively charged dust grains. The frequency and the growth rate of the unstable wave instability also increases with {delta}. The growth rate of the instability increases with beam density and scales as the one-third power of the beam density in Cerenkov interaction and is proportional to the 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 is no dust in the plasma cylinder.

• OSTI ID: 21282135
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 9 Vol. 16; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DISPERSION RELATIONS
DUSTS
ELECTRON BEAMS
ELECTRONS
EXCITATION
PHASE VELOCITY
PLASMA
PLASMA DENSITY
PLASMA INSTABILITY
PLASMA SURFACE WAVES