Modelling of the 2-dimensional structure and impurity transport for a scrape-off layer with a solid limiter
First the 2-dimensional modelling of a scrape-off layer with a solid limiter is performed. After the plasma in a scrape-off layer is calculated by a plasma code SLIM based on the 2-dimensional fluid equations with source terms due to neutral particles, the neutral transport is calculated by a Monte Carlo code EIRENE with the use of the results by SLIM. These two calculations are iteratively performed until a nearly self-consistent result is obtained. Next, in the scrape-off plasma thus obtained, ionization of neutral impurity particles ejected from the first wall and random diffusion of the charged impurities across the magnetic field lines are simulated by a Monte Carlo method. From the statistical analysis on the numerical results the screening efficiency of a scrape-off layer, impurity redeposition rate and behaviour of impurities in a scrape-off layer are analysed.
Bibliographic Reference: Article: Contr. to Plasma Physics, Vol. 28 (1988), No. 4-5, pp. 427-432
Record Number: 198910474 / Last updated on: 1994-12-01
Original language: en
Available languages: en