An impicit Monte Carlo Method for simulation of impurity transport in divertor plasma

摘要

A new "implicit" Monte Carlo (IMC) method has been developed to simulate ionization and recombination processes of impurity ions in divertor plasmas. The IMC method takes into account many ion- ization and recombination processes during a time step Δt. The time step is not limited by a condition, Δtτ_min(τ_min; the minimum characteristic time of atomic processes), which is forced to be adopted in conventional Monte Carlo methods. We incorporate this method into a one-dimensional impurity transport model.