Abstract

Effects of nonpotential ponderomotive force on kinetic phenomena in a plasma are presented. The particle distribution function is derived, which allows one to calculate the particle and heat fluxes. A novel relativistic hydrodynamic equation of motion, incorporating self-generated magnetic fields, is obtained, which admits no frozen-in condition. The generation of electron fluid vortices by a laser pulse in initially unmagnetized plasma is demonstrated. The merging, decay, and annihilation of vortices (filaments) are discussed. The launching of plasma jets by the vortex structures is disclosed. Self-consistent problem of magnetic, modulational, and filamentational instabilities is studied. The decay of photons into photons and the helicon waves are also discussed. The relevance of this work to recent PetaWatt experiments in connection with high-energy particle generation is pointed out. In addition, highly collimated, mass outflows (jets) are ubiquitous phenomena relevant to astrophysics.

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