Experimental investigations on the role of e x B flow shear in improved confinement

S. Jachmich; G. Van Oost; R. R. Weynants; J. A. Boedo

doi:10.1088/0741-3335/40/6/016

Experimental investigations on the role of e x B flow shear in improved confinement

S. Jachmich
, G. Van Oost
, R. R. Weynants
, J. A. Boedo

Laboratory for Plasma Physics

FORSCHUNGSZENTRUM JULICH GMBH
University of California, San Diego

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

66 Citations (Scopus)

Résumé

Edge transport and confinement changes induced by radial electric fields, externally imposed in TEXTOR-94 by means of electrode biasing, were investigated. The edge profiles of the electric field E_r were measured continuously by a specially developed nine-tip Langmuir probe, thus allowing the study of the relative spatial and temporal dynamics of E_r and its radial gradient and possible ensuing transport changes. A particle transport barrier is found to be built up as the electric field gradient increases, thus strengthening the conjecture that E x B stabilization is a viable mechanism for improved confinement in tokamaks.

langue originale	Anglais
Pages (de - à)	1105-1113
Nombre de pages	9
journal	Plasma Physics and Controlled Fusion
Volume	40
Numéro de publication	6
Les DOIs	https://doi.org/10.1088/0741-3335/40/6/016
état	Publié - 1998

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abstract = "Edge transport and confinement changes induced by radial electric fields, externally imposed in TEXTOR-94 by means of electrode biasing, were investigated. The edge profiles of the electric field Er were measured continuously by a specially developed nine-tip Langmuir probe, thus allowing the study of the relative spatial and temporal dynamics of Er and its radial gradient and possible ensuing transport changes. A particle transport barrier is found to be built up as the electric field gradient increases, thus strengthening the conjecture that E x B stabilization is a viable mechanism for improved confinement in tokamaks.",

author = "S. Jachmich and \{Van Oost\}, G. and Weynants, \{R. R.\} and Boedo, \{J. A.\}",

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AU - Boedo, J. A.

PY - 1998

Y1 - 1998

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AB - Edge transport and confinement changes induced by radial electric fields, externally imposed in TEXTOR-94 by means of electrode biasing, were investigated. The edge profiles of the electric field Er were measured continuously by a specially developed nine-tip Langmuir probe, thus allowing the study of the relative spatial and temporal dynamics of Er and its radial gradient and possible ensuing transport changes. A particle transport barrier is found to be built up as the electric field gradient increases, thus strengthening the conjecture that E x B stabilization is a viable mechanism for improved confinement in tokamaks.

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ER -

Experimental investigations on the role of e x B flow shear in improved confinement

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