Transition from MHD to kinetic behavior in turbulent plasmas.

Friday, 19 December 2014
Tulasi N Parashar, William H Matthaeus, Michael A Shay and Minping Wan, University of Delaware, Newark, DE, United States
An important consideration for the Turbulent Dissipation Challenge is the initialization of turbulent kinetic plasma simulations. Traditionally it is believed that the MHD initial conditions are not applicable at the kinetic scales of a plasma. We present results from an ensemble of Particle In Cell (PIC) simulations and explore the transition from MHD scales to kinetic scales. We find that certain aspects of MHD like behavior might persist to scales smaller than traditionally expected. Implications for the initial conditions for step two of the challenge are discussed.