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Paper   IPM / Physic / 8396
School of Physics
  Title:   Nonlinear Structure of the Electromagnetic Waves in Underdense Plasmas
  Author(s): 
1.  B. Shokri
2.  A.R. Niknam
  Status:   Published
  Journal: Phys. Plasmas
  Vol.:  13
  Year:  2006
  Pages:   113110
  Supported by:  IPM
  Abstract:
The interaction of a high-frequency electromagnetic wave with a collisionless unmagnetized nonisothermal plasma, taking into account the ponderomotive force per unit volume acting on the plasma electrons, is studied. The electron density distribution is found. Obtaining the nonlinear differential and integral equations for the electric field and using the Maxwell equations, we investigate the electric and magnetic field profiles in plasma. It is shown that the profiles of the electric and magnetic field departure from a sinusoidal shape and the electron density becomes highly peaked for the higher electromagnetic energy flux

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