Extended hybrid kinetic-magnetohydrodynamic model for ignited burning plasmas

Abstract

A brief review of the existing kinetic-magnetohydrodynamic(MHD) hybrid models for the alpha particle physics in burning plasma demonstrates that the pressure-coupling scheme is equivalent to the current-coupling scheme only in a specific dynamic regime where the alpha particle density is much lower than the background ion and electron. A more comprehensive kinetic-multifluid model is proposed for a proper account of the dynamical regime of the burning plasma where both the energetic alpha and the helium ash particles are present. The Kinetic-multifluid model is further simplified into an extended hybrid kinetic-MHD model in the MHD limit. This reduction