12:15 PM - 12:30 PM
[PEM26-13] Modeling of Particle Acceleration in Shock-Shock Interaction
Keywords:Collisionless Shocks, Shock-Shock Interaction, Particle Acceleration
To investigate the shock-shock interaction, we perform one-dimensional full particle-in-cell simulation in which two identical shocks collide. We found that electrons are accelerated through multiple reflection between the two shocks(Fermi acceleration). These electrons excite large amplitude waves between the two shocks and are scattered in their pitch angles. The scattering results in that some electrons can have sufficiently large pitch angles so that they are easily reflected when they reach at a shock next time. We model the acceleration process and discuss the suitable condition for particle acceleration.