[Table of Contents]

Plasma and Fusion Research

Volume 5, S2033 (2010)

Regular Articles

Analysis of Radiative Mantle Formation by Impurity Seeding in ITER
Ikuhiro YAMADA, Kozo YAMAZAKI, Tetsutarou OISHI, Hideki ARIMOTO and Tatsuo SHOJI
Department of Energy Engineering and Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 Japan
(Received 9 December 2009 / Accepted 7 May 2010 / Published 10 December 2010)


In order to reduce high heat load on divertor plate in fusion reactors, we investigated radiative mantle formation scenarios by impurity seeding into scrape off layer (SOL) in ITER using the TOTAL simulation code. The low-Z impurity, like He, could not form a radiative mantle and have almost no contribution to the reduction of divertor heat load. On the contrary, the medium-Z impurity, like Kr, can form radiative mantle definitely and can radiate about 84% (core:33% / mantle:51%) of input power inside the last closed flux surface (LCFS) without any serious changes in density and temperature profile, and without inducing back transition from H to L mode. It can reduce divertor heat load about 60% compared with the case of no impurity injection in ITER.


impurity, transport, radiative mantle, divertor, ITER

DOI: 10.1585/pfr.5.S2033


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This paper may be cited as follows:

Ikuhiro YAMADA, Kozo YAMAZAKI, Tetsutarou OISHI, Hideki ARIMOTO and Tatsuo SHOJI, Plasma Fusion Res. 5, S2033 (2010).