Exponentially growing tearing modes in Rijnhuizen Tokamak Project plasmas

• Type: Article in International Scientific Journal
• Date: 2002

Authors

F. Salzedas (Author) FEUP; F. C. Schuller (Author) Other; A. A. M. Oomens (Author) Other; RTP Team (Author) Other

Journal

Title: Physical Review Letters

Vol. 88 No. 7

Pages: 075002-75005

ISSN: 0031-9007

Publisher: American Physical Society

Indexing

ISI Web of Science

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Scientific classification

FOS: Natural sciences > Physical sciences

Other information

DOI: 10.1103/PhysRevLett.88.075002

Abstract (EN): The local measurement of the island width w, around the resonant surface, allowed a direct test of the extended Rutherford model [P. H. Rutherford, PPPL Report-2277 (1985)], describing the evolution of radiation-induced tearing modes prior to disruptions of tokamak plasmas. It is found that this model accounts very well for the observed exponential growth and supports radiation losses as being the main driving mechanism. The model implies that the effective perpendicular electron heat conductivity in the island is smaller than the global one. Comparison of the local measurements of w with the magnetic perturbed field showed that w1/2 was valid for widths up to 18% of the minor radius.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4