Carbon layers in the divertor of ASDEX Upgrade

被引：43

作者：

Rohde, V ^{[1
]}

Maier, H ^{[1
]}

Krieger, K ^{[1
]}

Neu, R ^{[1
]}

Perchermaier, J ^{[1
]}

机构：

[1] Max Planck Inst Plasma Phys, EURATOM Assoc, D-85748 Garching, Germany

来源：

JOURNAL OF NUCLEAR MATERIALS | 2001年 / 290卷

关键词：

carbon; redeposition; divertor;

D O I：

10.1016/S0022-3115(00)00574-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

One of the main disadvantages of carbon as first wall material in a fusion device is the co-deposition of hydrogen with the eroded carbon. These layers will contain a significant amount of the tritium inventory of a fusion reactor. After venting brownish layers and flakes were found under the divertor structure of ASDEX Upgrade. First investigations were made on these Bakes. Due to the complicated structure beyond the divertor, shadowing effects occur indicating that the brown layers are deposited by ionised particles. The flakes were analysed using SEM and ion beam techniques. Two different types of hydrocarbon layers were found: The brownish hydrogen poor layer (D/C = 0.4) and transparent hydrogen rich layer (D/C = 1) The total amount of carbon beyond the divertor could be estimated to 1.5 g, deposited in 3000 s of plasma discharges. First measurement of the layer growth using a quartz crystal microbalance instrument is presented. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：317 / 320

页数：4

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