Motion and lifetime of dust grains in a tokamak plasma

被引：26
作者：
Martin, JD
Coppins, M
Counsell, GF
机构：
[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BZ, England
[2] UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England
来源：
JOURNAL OF NUCLEAR MATERIALS | 2005年 / 337卷 / 1-3期
关键词：
carbon impurities; power balance; power deposition; radiation; tungsten;
D O I：
10.1016/j.jnucmat.2004.08.029
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The temperature evolution of a dust grain in a tokamak plasma is studied computationally. Heating times and evaporation times for scrape-off layer (SOL) plasmas are estimated, leading to estimates for the lifetime of micron-sized dust grains ranging between fractions of a second and tens of microseconds depending on plasma conditions. Grains are found to travel significant distances into a tokamak plasma. (c) 2004 Elsevier B.V. All rights reserved.
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收藏
页码：114 / 118
页数：5
相关论文
共 12 条
[1]   On the orbital motion limited theory for a small body at floating potential in a Maxwellian plasma [J].
Allen, JE ;
Annaratone, BM ;
de Angelis, U .
JOURNAL OF PLASMA PHYSICS, 2000, 63 :299-309
[2]   THE COLLECTION OF POSITIVE IONS BY A PROBE IMMERSED IN A PLASMA [J].
ALLEN, JE ;
BOYD, RLF ;
REYNOLDS, P .
PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON SECTION B, 1957, 70 (03) :297-304
[3]  
COUNSELL GF, COMMUNICATION
[4]  
KARDERINIS SN, 1998, 14 ESCAMPIG C P, P246
[5]   The floating potential of spherical probes and dust grains. II: Orbital motion theory [J].
Kennedy, RV ;
Allen, JE .
JOURNAL OF PLASMA PHYSICS, 2003, 69 (06) :485-506
[6]  
Laframboise J.G., 1966, 100 U TOR
[7]   Chemical erosion of carbon based materials in fusion devices [J].
Roth, J .
JOURNAL OF NUCLEAR MATERIALS, 1999, 266 :51-57
[8]  
ROZHANSKY V, COMMUNICATION
[9]   SCALING OF PARTICLE REFLECTION COEFFICIENTS [J].
THOMAS, EW ;
JANEV, RK ;
SMITH, J .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1992, 69 (04) :427-436
[10]  
THOMAS EW, 1991, J NUCL FUS S, V1, P79
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