A problem of surface melting under the impact of plasmas is one of the most important in the development of future magnetic confinement fusion reactors. The expected high heat loads can lead to melting of tungsten chosen as the material of a divertor and the first wall of ITER. The tungsten melt can move under the action of forces and quickly deform a surface. This article shows that at high temperatures, a tungsten vapor can be considered as a conductive material with conductivity high enough to be taken into account during simulation of current through a sample. We describe the mechanism of current generation by the thermo-emf due to non-uniform heating of the vapor/condensed substance interface without external sources of charges. Even without direct contact with the external plasma, the density of this current is high enough to cause noticeable movement of the melt in an external magnetic field. Simulation shows that the melt moving observed at BETA may be caused not by a current of an electron beam but by non-uniformity of heating and can be reproduced by any other similar heat source in the external magnetic field.
机构:
SB RAS, Budker Inst Nucl Phys, Novosibirsk, Russia
SB RAS, Inst Computat Math & Math Geophys, Novosibirsk, RussiaSB RAS, Budker Inst Nucl Phys, Novosibirsk, Russia
Lazareva, G. G.
Maksimova, A. G.
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Novosibirsk State Univ, Novosibirsk, Russia
SB RAS, Inst Computat Math & Math Geophys, Novosibirsk, RussiaSB RAS, Budker Inst Nucl Phys, Novosibirsk, Russia
Maksimova, A. G.
Popov, V. A.
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机构:
SB RAS, Budker Inst Nucl Phys, Novosibirsk, Russia
Novosibirsk State Univ, Novosibirsk, RussiaSB RAS, Budker Inst Nucl Phys, Novosibirsk, Russia
Popov, V. A.
Snytnikov, A., V
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SB RAS, Inst Computat Math & Math Geophys, Novosibirsk, RussiaSB RAS, Budker Inst Nucl Phys, Novosibirsk, Russia
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Assoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, Forschungszentrum Julich, Julich, GermanyAssoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, Forschungszentrum Julich, Julich, Germany
Kreter, A.
Hirai, T.
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ITER Org, Cadarache Ctr, F-13108 St Paul Les Durance, FranceAssoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, Forschungszentrum Julich, Julich, Germany
Hirai, T.
Laengner, M.
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Assoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, Forschungszentrum Julich, Julich, GermanyAssoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, Forschungszentrum Julich, Julich, Germany
Laengner, M.
Tanabe, T.
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Kyushu Univ, Interdisciplinary Grad Sch Engn Sci, Higashi Ku, Fukuoka 8128581, JapanAssoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, Forschungszentrum Julich, Julich, Germany
Tanabe, T.
Ueda, Y.
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Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871, JapanAssoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, Forschungszentrum Julich, Julich, Germany
Ueda, Y.
Samm, U.
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h-index: 0
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Assoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, Forschungszentrum Julich, Julich, GermanyAssoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, Forschungszentrum Julich, Julich, Germany
机构:
SB RAS, Budker Inst Nucl Phys, Novosibirsk, Russia
SB RAS, Inst Computat Math & Math Geophys, Novosibirsk, RussiaSB RAS, Budker Inst Nucl Phys, Novosibirsk, Russia
Lazareva, G. G.
Maksimova, A. G.
论文数: 0引用数: 0
h-index: 0
机构:
Novosibirsk State Univ, Novosibirsk, Russia
SB RAS, Inst Computat Math & Math Geophys, Novosibirsk, RussiaSB RAS, Budker Inst Nucl Phys, Novosibirsk, Russia
Maksimova, A. G.
Popov, V. A.
论文数: 0引用数: 0
h-index: 0
机构:
SB RAS, Budker Inst Nucl Phys, Novosibirsk, Russia
Novosibirsk State Univ, Novosibirsk, RussiaSB RAS, Budker Inst Nucl Phys, Novosibirsk, Russia
Popov, V. A.
Snytnikov, A., V
论文数: 0引用数: 0
h-index: 0
机构:
SB RAS, Inst Computat Math & Math Geophys, Novosibirsk, RussiaSB RAS, Budker Inst Nucl Phys, Novosibirsk, Russia
机构:
Assoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, Forschungszentrum Julich, Julich, GermanyAssoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, Forschungszentrum Julich, Julich, Germany
Kreter, A.
Hirai, T.
论文数: 0引用数: 0
h-index: 0
机构:
ITER Org, Cadarache Ctr, F-13108 St Paul Les Durance, FranceAssoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, Forschungszentrum Julich, Julich, Germany
Hirai, T.
Laengner, M.
论文数: 0引用数: 0
h-index: 0
机构:
Assoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, Forschungszentrum Julich, Julich, GermanyAssoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, Forschungszentrum Julich, Julich, Germany
Laengner, M.
Tanabe, T.
论文数: 0引用数: 0
h-index: 0
机构:
Kyushu Univ, Interdisciplinary Grad Sch Engn Sci, Higashi Ku, Fukuoka 8128581, JapanAssoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, Forschungszentrum Julich, Julich, Germany
Tanabe, T.
Ueda, Y.
论文数: 0引用数: 0
h-index: 0
机构:
Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871, JapanAssoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, Forschungszentrum Julich, Julich, Germany
Ueda, Y.
Samm, U.
论文数: 0引用数: 0
h-index: 0
机构:
Assoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, Forschungszentrum Julich, Julich, GermanyAssoc EURATOM FZJ, Inst Energy & Climate Res Plasma Phys, Forschungszentrum Julich, Julich, Germany