ERO modelling of tungsten erosion in the linear plasma device PSI-2

被引：28
|
作者：
Eksaeva, A. [1 ,2 ]
Marenkov, E. [1 ]
Borodin, D. [2 ]
Kreter, A. [2 ]
Reinhart, M. [2 ]
Kirschner, A. [2 ]
Romazanov, J. [2 ]
Terra, A. [2 ]
Brezinsek, S. [2 ]
Nordlund, K. [1 ,3 ]
机构：
[1] Natl Res Nucl Univ MEPhI, 31 Kashirskoe Sh, Moscow 115409, Russia
[2] Forschungszentrum Julich GmbH, Inst Energie & Klimaforschung Plasmaphys, D-52425 Julich, Germany
[3] Univ Helsinki, Dept Phys, FI-0560 Helsinki, Finland
来源：
NUCLEAR MATERIALS AND ENERGY | 2017年 / 12卷
基金：
欧盟地平线“2020”;
关键词：
DISTRIBUTIONS; ENERGY; BERYLLIUM; CASCADES; ATOMS;
D O I：
10.1016/j.nme.2017.03.014
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
Series of experiments on tungsten (W) erosion and transport in Argon (Ar) plasma were conducted at the linear plasma device PSI-2. W erosion was measured with three independent methods: WI spectroscopy, mass loss and quartz micro-balance (QMB) deposition sensor. Consistent set of data produced in these experiments was interpreted using the 3D ERO code simulations, which have reproduced all the main trends observed. Influence of the physical model assumptions (e.g. energy and angular distributions of sputtered particles) was demonstrated. The effect of WI effective quasi-metastable (MS) state population dynamics on spectroscopy measurements is shown; the characteristic relaxation time is determined. The measured physical sputtering yields for W are close to the simulated data obtained in the binary collision approximation (BCA) approach (SDTrimSP code). The remaining discrepancies between simulations and the experiment, mostly in spectroscopy, are accounted to the uncertainties in the plasma parameters and atomic data. (C) 2017 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license.
引用
收藏
页码：253 / 260
页数：8
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