<B> Dynamic Simulation of Solar Energetic Ions'
                   Equilibration and Acceleration 
</B>
<PRE>A.F. Barghouty and R.A. Mewaldt
California Institute of Technology
</PRE>
                   The mean charge states of solar energetic  
                   ions were observed by SAMPEX and ACE from 
                   recent large solar events to increase with 
                   energy.  This feature has implications for
                   the use of the observed charge state as 
                   probe of coronal electron temperature and 
                   density, as well as for models of ions 
                   acceleration and transport in the coronal
                   plasma. In a nonequilibrium model that 
                   includes ionization, shock-induced 
                   acceleration, and  energy losses, we 
                   will present simulated mean charge, charge 
                   distribution, and energy spectrum  for Fe, 
                   Si, and O, along with comparisons to 
                   observations.  We also discuss the 
                   sensitivity of the simulation to coronal 
                   and transport parameters.