TEMPERATURE LIMIT OF A GRAPHITE DIVERTOR SURFACE DUE TO SELF-SPUTTERING AND RADIATION ENHANCED SUBLIMATION

被引：22

作者：

BROOKS, JN

机构：

[1] Argonne National Laboratory, Argonne, IL 60439

来源：

JOURNAL OF NUCLEAR MATERIALS | 1990年 / 170卷 / 02期

关键词：

Sputtering - Surfaces - Radiation Effects;

D O I：

10.1016/0022-3115(90)90408-F

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The surface temperature limit of a graphite coated tokamak divertor due to particle erosion has been examined theoretically. The analysis uses models for physical sputtering, radiation enhanced sublimation, and redeposition phenomena. An upper bound on surface temperature is computed based on the necessary condition that self-sputtering be finite. The allowable graphite surface temperature is found to depend strongly on the plasma edge temperature, being limited to ≲ 800 ° C for medium plasma edge temperatures (-150 eV). © 1990.

引用

页码：164 / 168

页数：5

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