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Global migration of impurities in tokamaks
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2013 (English)In: Plasma Physics and Controlled Fusion, ISSN 0741-3335, E-ISSN 1361-6587, Vol. 55, no 12Article in journal (Refereed) Published
Abstract [en]

The migration of impurities in tokamaks has been studied with the help of tracer-injection (C-13 and N-15) experiments in JET and ASDEX Upgrade since 2001. We have identified a common pattern for the migrating particles: scrape-off layer flows drive impurities from the low-field side towards the high-field side of the vessel. Migration is also sensitive to the density and magnetic configuration of the plasma, and strong local variations in the resulting deposition patterns require 3D treatment of the migration process. Moreover, re-erosion of the deposited particles has to be taken into account to properly describe the migration process during steady-state operation of the tokamak.

Place, publisher, year, edition, pages
2013. Vol. 55, no 12
Keyword [en]
Electron-Impact Dissociation, Scrape-Off-Layer, Cross-Sections, Plasma, Ionization, Transport, Physics, C-13
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URN: urn:nbn:se:kth:diva-139301DOI: 10.1088/0741-3335/55/12/124029ISI: 000327844400031ScopusID: 2-s2.0-84888995082OAI: diva2:684350
40th Conference of the European-Physical-Society on Plasma Physics, JUL 01-05, 2013, Espoo, Finland

QC 20140108

Available from: 2014-01-08 Created: 2014-01-08 Last updated: 2014-01-22Bibliographically approved

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Petersson, PerRubel, Marek
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