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Penetration and radial force balance in field-reversed configuration with large rotating magnetic field

Citation

Ohnishi, M and Hugrass, W and Fukuhara, M and Minasaki, H and Osawa, H and Chikano, T, Penetration and radial force balance in field-reversed configuration with large rotating magnetic field , Physics of Plasmas, 15, (10) pp. 104504 . ISSN 1070-664X (2008) [Refereed Article]

DOI: doi:10.1063/1.2997341

Abstract

A field-reversed configuration (FRC) is formed by applying a rotating magnetic field (RMF) much larger than the axial magnetic field to a cylindrical glass vacuum chamber filled with 10 Pa argon gas without a preionization. The FRC with the plasma density 2.2× 1019 m-3, the temperature 8.0 eV, the separatrix length 0.45 m, and the separatrix radius 0.035 m is sustained for the notably long period of 40 ms. It is observed that the antenna current which produces the RMF is reduced by about half after the FRC is formed. The interaction between the plasma and the antenna circuit increases the antenna resistance and changes the inductance of the antenna so that the circuit becomes nonresonant. The RMF is sufficiently large to fully penetrate to the center during the period and drive the current with a rigid rotor profile. The RMF is shown to play a major role in sustaining the plasma pressure. © 2008 American Institute of Physics.

Item Details

Item Type:Refereed Article
Research Division:Physical Sciences
Research Group:Atomic, Molecular, Nuclear, Particle and Plasma Physics
Research Field:Plasma Physics; Fusion Plasmas; Electrical Discharges
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in Technology
Author:Hugrass, W (Dr Waheed Hugrass)
ID Code:54126
Year Published:2008
Web of Science® Times Cited:3
Deposited By:Information and Communication Technology
Deposited On:2009-02-11
Last Modified:2011-11-24
Downloads:0

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