Monte-Carlo simulations of chemical erosion in TEXTOR-94 with the ERO-TEXTOR code

被引:6
作者
Kirschner, A [1 ]
Philipps, V [1 ]
Pospieszczyk, A [1 ]
Wienhold, P [1 ]
机构
[1] Forschungszentrum Julich, EURATOM Assoc, Inst Plasmaphys, D-52425 Julich, Germany
关键词
D O I
10.1238/Physica.Topical.091a00057
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
This paper presents ERO-TEXTOR simulation calculations of chemical erosion of a carbon limiter exposed to the TEXTOR Scrape-Off-Layer. The spatial distribution of CD-emission near a testlimiter is calculated in dependence on the plasma parameters and on the sticking probability for hydrocarbons hitting the limiter surface. The comparison of D/XB values with experimental data on TEXTOR-94 indicates that eroded hydrocarbons returning to the limiter surface have an extremely low effective sticking. This can be understood in terms of a high re-erosion of the freshly deposited a-C:D layer. The comparison of the radial distribution of the CD- and CII-emission between simulation and experiment shows a good agreement.
引用
收藏
页码:57 / 60
页数:4
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