Strong convective and shock wave behavior in solar flares

A model has been developed to study the gasdynamics of a flare region heated by a stream of energetic electrons. It is shown that the energy deposition can introduce strong chromospheric dynamical effects. As a result of fluid motion into rarefield regions, there is considerable redistribution of mass causing a profound influence on the emitted line radiation.     

Reflection and Transmission of Ion Acoustic Waves from a Plasma Discontinuity

We calculate transmission and reflection coefficients for an ion acoustic wave incident from the upstream direction upon a plasma discontinuity of width much less than the wavelength. In the limit of an infinitely strong discontinuity there is complete in phase reflection.