Plasma

Seven Ways To Model Plasma

Seven Ways To Model Plasma

This post covers seven ways to model plasma: charged ideal gases, charged single fluid, two charged fluids, gyrokinetic, kinetic, everything and quantum.  The post was inspired by a recent paper trying to model plasma using Quantum Field Theory.  It opens with short histories of the charged ideal gas model and magnetohydrodynamics.  An example from magnetic mirrors is used to show flaws in the MHD model.  Next, the two-fluid model is explained based on differences between the ion and the electron.  After this, particle-in-cell is covered and how it fits with gyrokinetics and kinetics.  Gyrokinetics is shown to simplify ions’ corkscrewing motion.  Kinetics is shown as (BIC) blob-in-cell modeling.  Quantum and klimontovich (everything) models are covered at the end.