Anomalous Ion Diffusion and Radial-Electric-Field Generation in a Turbulent Edge Plasma Potential Weakly Correlated in Time and Space

Autor:	V. Svoboda, Siegbert Kuhn, David Tskhakaya, Václav Petržílka, L. Krlín, R. Klíma, Pavol Pavlo, Michael Tendler, Radomir Panek, J. Stöckel
Rok vydání:	2005
Předmět:	Physics Spacetime Turbulence Significant difference Plasma Condensed Matter Physics Atomic and Molecular Physics and Optics Ion symbols.namesake Impurity Electric field Quantum electrodynamics symbols Atomic physics Hamiltonian (quantum mechanics) Mathematical Physics
Zdroj:	Scopus-Elsevier
ISSN:	1402-4896 0031-8949
DOI:	10.1238/physica.regular.072a00327
Popis:	Using a simple model of tokamak-edge-plasma turbulence in the form of a spatially periodic and time-independent electrostatic potential, we have found recently a new type of anomalous impurity diffusion in this regime. In the present contribution, we estimate this diffusion in the test-particle approach for a real turbulent potential obtained in an experiment. A significant difference in the impurity dynamics between the Hamiltonian and drift approaches is observed. As an interesting consequence of these dynamics, the possibility of radial-electric-field generation in the turbulence regimes appears. This effect can be of importance in scenarios related to transport barriers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccdf26407961ef578a6c766a8ba22159 https://doi.org/10.1238/physica.regular.072a00327 Zobrazit plný text záznamu