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Title: Excitation of surface modes by electron beam in semi-bounded quantum plasma

The excitation of the TM surface modes due to the interaction of electron beam with a semi-bounded quantum magnetized plasma is investigated. The generated current and the perturbed densities of the electron beam and plasma are obtained. The wave equation that describes the excited fields has been solved to obtain the dispersion relation for these modes. It is found that the quantum effects play important role for frequencies less and bigger than plasma frequency such that the phase velocity of modes increases with increasing the quantum effects compared to the classical case. It has also been displayed that in the absence of external magnetic field, the surface modes appear in the all regions of the wavelength while they have been only excited for high wavenumber in the presence of the magnetic field. Besides, it has been shown that the dispersion curves of the modes depend essentially on the density ratio of beam and plasma.
Authors:
 [1] ;  [2]
  1. Plasma Physics Department, N.R.C., Atomic Energy Authority, Cairo (Egypt)
  2. Physics Department, Faculty of Science, Ain-Shams University, Cairo (Egypt)
Publication Date:
OSTI Identifier:
22486412
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 10; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BEAM CURRENTS; DISPERSION RELATIONS; ELECTRON BEAMS; EXCITATION; LANGMUIR FREQUENCY; MAGNETIC FIELDS; PHASE VELOCITY; PLASMA DENSITY; QUANTUM PLASMA; WAVE EQUATIONS; WAVELENGTHS