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Type: Artigo de periódico
Title: Double-helix current drive revisited
Author: Clemente, Roberto A.
Farengo, Ricardo
Abstract: The conditions required for efficient current drive in a weakly resistive plasma column, subject to a double helix traveling magnetic field, are examined in detail by using a simple non-linear Ohm's law for the plasma. In agreement with previous numerical work on the subject by Bertram [5], it is shown that field penetration is indeed strongly limited when large external bias longitudinal magnetic fields are used. However, there is a range of small external bias fields that allow for significant penetration when reasonable driving fields are used. This should be of interest for sustaining reversed-field pinches and toroidal screw pinches.
Editor: Sociedade Brasileira de Física
Rights: aberto
Identifier DOI: 10.1590/S0103-97332003000400043
Date Issue: 1-Dec-2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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