Simulation of Dust Statistical Characteristics in Tokamaks

Abstract

In this work we analyze the size (radius) distribution function of dust particles in tokamak plasmas during a steady state discharge. A relation between the radius distribution function of dust in the plasma and the radius distribution of dust injected from tokamak walls is obtained using a Green's function formalism. Numerical simulations of the dust radius distribution function in a tokamak plasma with the Dust Transport (DUSTT) code are used to obtain the analytical form of the Green's function semi-empirically. It is demonstrated that the Green's function obtained can be used to predict qualitatively the dust size distributions in the tokamak plasmas.

Dust in magnetic fusion devices

“…This probably indicates the presence of multiple dust generation mechanisms as well as possible impact of plasma-grain interactions, which can play a significant role in the establishing of grain size distribution (e.g. see [80]).…”

Performance Evaluation of FSO Communications under Sand-Dust Conditions

“…where G � 2.65 × 10 6 g/m 3 denotes the sand-dust proportion; r denotes the radius of sand-dust particles; and p(r) denotes the sand-dust particle radius distribution, which normally follows the log-normal distribution [20]. erefore, the probability density distribution function of the sand-dust particle radius can be written as…”