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Charge-state independent anomalous transport for a wide range of different impurity species observed at Wendelstein 7-X

W7-X Team; Langenberg, A.; Wegner, Th.; Pablant, N. A.; Marchuk, O.; Geiger, B.; Tamura, N.; Bussiahn, R.; Kubkowska, M.; Mollén, A.; Traverso, P.; Smith, H. M.; Fuchert, G.; Bozhenkov, S.; Damm, H.; Pasch, E.; Brunner, K.-J.; Knauer, J.; Beurskens, M.; ... mehr

Abstract (englisch):

In this paper, the plasma volume averaged impurity confinement of selected charge states and impurity species has been characterized for the Stellarator Wendelstein 7-X (W7-X), covering a wide range of atomic charges (Z=12–44) and atomic masses (M=28–184). A comparison of the experimental findings to theoretical neoclassical and turbulent transport expectations suggests, aside from/in addition to the neoclassical transport, an additional significant anomalous transport mechanism, which is not inconsistent with the predictions of a turbulence dominated impurity transport and is in agreement with the experimental results from recent transport studies based on the direct measurements of impurity diffusion profiles, performed at W7-X.

DOI: 10.1063/5.0004462
Web of Science
Zitationen: 25
Zitationen: 28
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP)
Institut für Hochleistungsimpuls- und Mikrowellentechnik (IHM)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 05.2020
Sprache Englisch
Identifikator ISSN: 1070-664X, 1089-7674
KITopen-ID: 1000120004
HGF-Programm 31.03.02 (POF III, LK 01) Plasma Heizsysteme
Erschienen in Physics of plasmas
Verlag American Institute of Physics (AIP)
Band 27
Heft 5
Seiten 052510
Projektinformation EUROfusion (EU, H2020, 633053)
Nachgewiesen in Dimensions
Web of Science
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