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Paper   IPM / Physic / 6642
School of Physics
  Title:   Nonlinear Dynamicsof A Broad Spectrum of Relativistically Intense Electromagnetic Waves in Overdense Plasmas
1.  H. Hakimi Pajouh
2.  N.L. Tsintsadze
  Status:   Published
  Journal: Physica Scripta
  No.:  96
  Vol.:  T75
  Year:  1998
  Pages:   120-124
  Supported by:  IPM
Derivation of a novel kinetic equation for the spectral function of hich frequency relativistically intense electromagnetic (EM) waves (photon gas) is presented. In the kinetic equation appears an additional term, and the spectral function is defined in seven-dimensional coordinate, wave vector and frequency space. Nonlinear dynamics of the photon gas-plasma in the fully relativistic case is studied by the new kinetic equation and equations describing the slow motion of a plasma under the action of a ponderomotive force. A general dispersion relation for an arbitrary amplitude EM wave is derived and new branches for the modulational instability are found. Adiabatic photon capture in a well with an arbitrary plasma-well profile is investigated.

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