Impurity seeded radiative power exhaust solutions for ITER

Abstract

The injection of impurities into the scrape-off layer (SOL) to stimulate radiative power exhaust from the mantle and SOL/divertor of the International Thermonuclear Experimental Reactor (ITER) is investigated. Intermediate Z impurities (e.g. argon to krypton) are able to radiate more than two thirds of the plasma heating power, without significant effect on the plasma power balance or the shear profile and without triggering an H to L mode transition