Entropy gradientdriven electron inertial instabilities
Abstract
In the vicinity of a density transition region or surface, electron temperature fluctuations are known to drive low frequency electromagnetic surface waves which may be connected with the selfgeneration of magnetic fields in the laserplasma interaction. Two methods of destabilization are considered. In the first approach an accelerating plasma surface is considered and this leads to instability only when an accompanying temperature gradient scale length is at most as large as the density gradient scale length. In the second approach the introduction of current is also found to cause instability near the plasma surface provided an identical temperature gradient threshold is exceeded. In both cases the growth rates for each instability are enhanced by the square root of the ion to electron mass ratio over the associated growth rates for ioninertialtype instability.
 Publication:

Physics of Fluids
 Pub Date:
 November 1988
 DOI:
 10.1063/1.867021
 Bibcode:
 1988PhFl...31.3341A
 Keywords:

 Electron Energy;
 Laser Plasma Interactions;
 Nonuniform Magnetic Fields;
 Plasma Physics;
 Linear Equations;
 Perturbation Theory;
 Plasma Currents;
 Temperature Gradients;
 Plasma Physics