Vertical target and FW erosion during off-normal events and impurity production and transport during ELMs typical for ITER-FEAT

被引：26

作者：

Würz, H

Pestchanyi, S

Bazylev, B

Landman, I

Kappler, F

机构：

[1] Forschungszentrum Karlsruhe, Inst Hochleistungsimpuls & Mikrowellentech, D-76021 Karlsruhe, Germany

[2] Troitsk Inst Innovat & Fus Res, Troitsk 142092, Russia

[3] Luikov Inst Heat & Mass Transfer, Minsk 280008, BELARUS

来源：

JOURNAL OF NUCLEAR MATERIALS | 2001年 / 290卷

关键词：

disruption; plasma shield; impurity transport; erosion; ELM;

D O I：

10.1016/S0022-3115(00)00478-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

During off-normal events besides evaporation macroscopic erosion might occur. In cal bon-based materials (CBMs) macroscopic erosion means brittle destruction and dust formation and in metals melt layer motion and droplet splashing. Dust, melt flow, droplet splashing and redeposited evaporated material produce complex layers with considerable surface roughness and drastically reduced heat conductivity. Moreover flaking and easy levitation of particles might occur. Subsequent ELMs when depositing their energy into such layers might enhance impurity production because of increased heating of the hot spots. For vertical targets and for first walls (FWs) macroscopic erosion is analyzed. For a simplified hot spot scenario a first estimation on maximum tolerable ELM energy is given. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：1138 / 1143

页数：6

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