A model of hydrogen impact induced chemical erosion of carbon based on elementary reaction steps

被引：44

作者：

Wittmann, M

Kuppers, J

机构：

[1] MAX PLANCK INST PLASMA PHYS, EURATOM ASSOC, D-85748 GARCHING, GERMANY

[2] UNIV BAYREUTH, D-95440 BAYREUTH, GERMANY

来源：

JOURNAL OF NUCLEAR MATERIALS | 1996年 / 227卷 / 03期

关键词：

D O I：

10.1016/0022-3115(95)00150-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Based on the elementary reaction steps for chemical erosion of carbon by hydrogen a model is developed which allows to calculate the amount of carbon erosion at a hydrogenated carbon surface under the impact of hydrogen ions and neutrals. Hydrogen ion and neutral flux energy distributions prevailing at target plates in the ASDEX upgrade experiment are chosen in the present calculation. The range of hydrogen particles in the target plates is calculated using TRIDYN code. Based upon the TRIDYN results the extent of the erosion reaction as a function of depth is estimated. The results show that both, target temperature and impinging particle flux energy distribution, determine the hydrogen flux density dependent erosion yield and the location of the erosion below the surface.

引用

页码：186 / 194

页数：9

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