NDLI: The ecton model of unipolar arcing at fine-structured surface

Content Provider	IEEE Xplore Digital Library
Author	Barengolts, S.A. Mesyats, G.A. Tsventoukh, M.M.
Copyright Year	2012
Description	Author affiliation: Prokhorov General Physics Institute RAS, 38 Vavilova st., Moscow 119991 Russian Federation (Barengolts, S.A.) \|\| Lebedev Physical Institute RAS, 53 Leninksy ave., Moscow 119991 Russian Federation (Mesyats, G.A.; Tsventoukh, M.M.)
Abstract	Summary form only given. The initiation of the explosive electron emission pulses - ectons being responsible for the ignition and burning of a vacuum discharge, in particular, - unipolar $arcs^{1}.$ The latter being a common feature of intense plasma-surface interactions in fusion devices. A fusion devices first wall with a strongly non-uniform surface, as well as an intense power load onto the surface in the edge localized modes (ELMs) form, intensely promotes explosive emission ignition2. Furthermore, the thin-film metallic surfaces define the arcing properties, such as the erosion rate. This agrees with a novel detailed experiments on unipolar arcing at linear simulator $NAGDIS-II^{3,4},$ the Asdex-Upgrade $tokamak^{5},$ and the Large Helical $Device^{6}.$ Such fine-structured - film-like surfaces, are as follows: a micron-scale layer of tungsten nanowires (so called “W-fuzz”) that had been grown at the bulk $tungsten^{3,4};$ a liquid lithium coating of capillary porous system made from tungsten or $molybdenum^{7};$ and tungsten layers deposited on a carbon $tiles^{5}.$ We are considering the ecton processes (ecton current, its life-time, spot-cell motion velocity, erosion rate) depending on the film thickness and its thermo-physical and explosive properties.
File Size	102322
File Format	PDF
ISBN	9781457721274
ISSN	07309244
e-ISBN	9781457721298
e-ISBN	9781457721281
DOI	10.1109/PLASMA.2012.6383663
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-07-08
Publisher Place	United Kingdom
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Explosives Tungsten Region 8 Surface discharges Physics Electron emission Ignition
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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