Nitrogen retention in ASDEX Upgrade

被引：8
|
作者：
Meisl, G. [1 ,4 ]
Schmid, K. [1 ]
Oberkofler, M. [1 ]
Krieger, K. [1 ]
Lisgo, S. W. [2 ]
Aho-Mantila, L. [3 ]
Reimold, F. [1 ]
机构：
[1] Max Planck Inst Plasma Phys, D-85748 Garching, Germany
[2] ITER Org, FST, F-13067 St Paul Les Durance, France
[3] VTT, FI-02044 Espoo, Finland
[4] Tech Univ Munich, Phys Dept E28, D-85747 Garching, Germany
来源：
JOURNAL OF NUCLEAR MATERIALS | 2015年 / 463卷
关键词：
MIGRATION; TUNGSTEN;
D O I：
10.1016/j.jnucmat.2014.10.031
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigated the transport of nitrogen through the plasma and the interaction of nitrogen with tungsten under divertor exposure conditions during nitrogen-seeding experiments in ASDEX Upgrade. Using the divertor manipulator system, tungsten samples were exposed to well-characterized L-mode plasmas with and without nitrogen seeding. We also simulated nitrogen transport and re-distribution in these discharges by self-consistent WallDYN-DIVIMP modeling. For these simulations we applied a W-N surface model based on laboratory experiments and plasma backgrounds from SOLPS. In contrast to the conclusion from Kallenbach and Dux (2010) [5] we find that the N retention in ASDEX Upgrade is in agreement with results from laboratory experiments. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：668 / 671
页数：4
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