Characterization of transport in the stochastic edge layer of TEXTOR by analysis of the radial and poloidal distribution of electron density and temperature

Autor:	Ph. Mertens, D. Harting, X. Loozen, S. Brezinsek, H. Frerichs, M. Z. Tokar, Sadrilla S. Abdullaev, B. Schweer, U. Samm, B. Unterberg, K.H. Finken, Gennady Sergienko, R. C. Wolf, Michael Lehnen, Detlev Reiter, Oliver Schmitz, M. W. Jakubowski
Rok vydání:	2007
Předmět:	Nuclear and High Energy Physics Electron density Parallel transport Chemistry Divertor Analytical chemistry Perturbation (astronomy) Laminar flow Fusion power Molecular physics Nuclear Energy and Engineering Physics::Plasma Physics Ergodic theory General Materials Science Particle flux
Zdroj:	Journal of Nuclear Materials. :680-685
ISSN:	0022-3115
DOI:	10.1016/j.jnucmat.2007.01.067
Popis:	At TEXTOR the dynamic ergodic divertor (DED) induces a stochastic edge layer by a resonant magnetic perturbation to control heat and particle exhaust. In this paper the characterization of its generic transport properties is described. The radial and poloidal distribution of electron density and temperature is analyzed accompanied by observations of the particle flux to the DED target. These experimental results are compared to the calculated magnetic topology and to results from EMC3/EIRENE modeling. Thereby, the existence of two poloidally separated transport domains is demonstrated: laminar flux tubes are dominated by parallel transport to the DED target – they act analogous to a classical scrape-off layer. In contrast, the adjacent ergodic domains show stochastic transport characteristics with enhanced radial transport.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::39cac21310a2fbf0af5f1a49706d4215 https://doi.org/10.1016/j.jnucmat.2007.01.067 Zobrazit plný text záznamu Full Text from ScienceDirect