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Validating heat bal...
Validating heat balance models for tungsten dust in cold dense plasmas
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- Vignitchouk, Ladislas (author)
- KTH,Rymd- och plasmafysik
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- Ratynskaia, Svetlana V. (author)
- KTH,Rymd- och plasmafysik
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- Kantor, M. (author)
- Ioffe Inst, St Petersburg 194021, Russia.
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- Tolias, Panagiotis, 1984- (author)
- KTH,Rymd- och plasmafysik
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- De Angeli, M. (author)
- CNR, Ist Fis Plasma Piero Caldirola, Via Cozzi 53, I-20125 Milan, Italy.
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- van der Meiden, H. (author)
- Dutch Inst Fundamental Energy Res, FOM Inst DIFFER, De Zaale 20, NL-5612 AJ Eindhoven, Netherlands.
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- Vernimmen, J. (author)
- Dutch Inst Fundamental Energy Res, FOM Inst DIFFER, De Zaale 20, NL-5612 AJ Eindhoven, Netherlands.
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- Brochard, F. (author)
- Univ Lorraine, Inst Jean Lamour, UMR 7198, CNRS, F-54506 Vandoeuvre Les Nancy, France.
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- Shalpegin, A. (author)
- Univ Lorraine, Inst Jean Lamour, UMR 7198, CNRS, F-54506 Vandoeuvre Les Nancy, France.
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- Thorén, Emil (author)
- KTH,Rymd- och plasmafysik
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- Banon, J-P (author)
- NTNU Norwegian Univ Sci & Technol, Dept Phys, NO-7491 Trondheim, Norway.
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(creator_code:org_t)
- 2018-09-14
- 2018
- English.
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In: Plasma Physics and Controlled Fusion. - : IOP PUBLISHING LTD. - 0741-3335 .- 1361-6587. ; 60:11
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Abstract
Subject headings
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- The first comparison of dust radius and surface temperature estimates, obtained from spectroscopic measurements of thermal radiation, with simulations of dust heating and vaporization by the MIGRAINe dust dynamics code is reported. The measurements were performed during controlled tungsten dust injection experiments in the cold and dense plasmas of Pilot-PSI, reproducing ITER divertor conditions. The comparison has allowed us to single out the dominating role of the work function contribution to the dust heating budget. However, in the plasmas of interest, dust was found to enter the strong vaporization regime, in which its temperature is practically insensitive to plasma properties and the various uncertainties in modeling. This makes the dust temperature a poor figure of merit for model validation purposes. On the other hand, simple numerical scalings obtained from orbital-motion-limited estimates were found to be remarkably robust and sufficient to understand the main physics at play in such cold and dense plasmas.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- tungsten
- dust
- orbital-motion-limited
- Pilot-PSI
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Vignitchouk, Lad ...
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Ratynskaia, Svet ...
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Kantor, M.
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Tolias, Panagiot ...
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De Angeli, M.
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van der Meiden, ...
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show more...
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Vernimmen, J.
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Brochard, F.
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Shalpegin, A.
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Thorén, Emil
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Banon, J-P
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
- Articles in the publication
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Plasma Physics a ...
- By the university
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Royal Institute of Technology