Tungsten dust remobilization under steady-state and transient plasma conditions

被引：19
|
作者：
Ratynskaia, S. [1 ]
Tolias, P. [1 ]
De Angeli, M. [2 ]
Weinzettl, V. [3 ]
Matejicek, J. [3 ]
Bykov, I. [4 ]
Rudakov, D. L. [4 ]
Vignitchouk, L. [1 ]
Thoren, E. [1 ]
Riva, G. [5 ]
Ripamonti, D. [5 ]
Morgan, T. [6 ]
Panek, R. [3 ]
De Temmerman, G. [7 ]
机构：
[1] KTH Royal Inst Technol, Space & Plasma Phys, Teknikringen 31, S-10044 Stockholm, Sweden
[2] CNR, Ist Fis Plasma, Via Cozzi 53, I-20125 Milan, Italy
[3] Czech Acad Sci, Inst Plasma Phys, Prague, Czech Republic
[4] Univ Calif San Diego, La Jolla, CA 92093 USA
[5] CNR, Inst Condensed Matter Chem & Energy Technol, Via Cozzi 53, I-20125 Milan, Italy
[6] Dutch Inst Fundamental Energy Res, FOM Inst DIFFER, Eindhoven, Netherlands
[7] ITER Org, Route Vinon Sur Verdon,CS 90 046, F-13067 St Paul Les Durance, France
来源：
NUCLEAR MATERIALS AND ENERGY | 2017年 / 12卷
关键词：
THERMAL CONTACT CONDUCTANCE; PARTICLES; BEHAVIOR; FORCE;
D O I：
10.1016/j.nme.2016.10.021
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：
Remobilization is one of the most prominent unresolved fusion dust-relevant issues, strongly related to the lifetime of dust in plasma-wetted regions, the survivability of dust on hot plasma-facing surfaces and the formation of dust accumulation sites. A systematic cross-machine study has been initiated to investigate the remobilization of tungsten micron-size dust from tungsten surfaces implementing a newly developed technique based on controlled pre-adhesion by gas dynamics methods. It has been utilized in a number of devices and has provided new insights on remobilization under steady-state and transient conditions. The experiments are interpreted with contact mechanics theory and heat conduction models. (C) 2016 The Authors. Published by Elsevier Ltd.
引用
收藏
页码：569 / 574
页数：6
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