Comparison of impurity transport model with measurements of He-like spectra of argon at the tokamak TEXTOR

Autor:	Hans-Joachim Kunze, F. Goryaev, M. Goto, Denis Pilipenko, Detlev Reiter, A. Pospieszczyk, Wolfgang Biel, G. Bertschinger, X. Loozen, Denis Kalupin, O. Marchuk, A. Urnov, M. Z. Tokar
Rok vydání:	2006
Předmět:	Tokamak Argon Materials science Transport coefficient Magnetic confinement fusion chemistry.chemical_element Plasma Condensed Matter Physics Spectral line Ion law.invention Nuclear Energy and Engineering chemistry Physics::Plasma Physics law Impurity Atomic physics
Zdroj:	Plasma Physics and Controlled Fusion. 48:1633-1646
ISSN:	1361-6587 0741-3335
DOI:	10.1088/0741-3335/48/11/005
Popis:	The measured K α spectra of He-like argon were used to determine the densities of H-, He- and Li-like argon ions in ohmically heated plasmas in the tokamak TEXTOR. The obtained ratio of the densities for the Li- and He-like ions shows a significant deviation from coronal equilibrium. In order to interpret these results numerical modelling of the impurity transport was performed by the code RITM with neoclassical and anomalous contributions to the transport coefficients. The measurements show that the transport in the plasma core is much higher than that predicted from the model and has a strong correlation with the line averaged density. This paper also demonstrates the unique ability of the He-like spectra to separate the transport properties and the charge-exchange processes in the plasma.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b791735d1027a2a5e34326f1689ff838 https://doi.org/10.1088/0741-3335/48/11/005 Zobrazit plný text záznamu