ANALYTICAL MODELLING OF IMPURITY TRANSPORT IN TOROIDAL DEVICES
This review deals with our knowledge of the fundamentals of impurity transport in tokamaks and stellarators. Emphasis is put on the processes in the edge region, which are of crucial importance for wall produced impurities. For the anomalous transport model closed analytic expressions for the stationary case are derived which allow the importance of various transport and plasma parameters to be estimated. We also discuss some general features of non-stationary problems. In particular, the definitions and essentials of various characteristic times are discussed. Moreover, we elucidate the questions of diffusive penetration and impurity screening.
Bibliographic Reference: WRITE TO MAX-PLANCK-INSTITUT F41VUR PLASMAPHYSIK, 8046 GARCHING BEI MUENCHEN (GERMANY), MENTIONING REPORT IPP III/105, 1985
Record Number: 1989124049400 / Last updated on: 1987-01-01
Available languages: en