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This paper presents the global features of the current density distribution in tokamak plasmas. It is shown that, for a wide variety of discharge conditions, the profiles assume a unique shape by representing them in a suitable dimensionless form. Details of the magnetic field structure in correlation to periodic sawtooth-like oscillations of the central plasma parameters are presented. A scenario is developed which could explain some of the discrepancies between Kadomtsev's well-known theoretical conception of the sawtooth phenomenon and the experimental findings on TEXTOR and other tokamak devices.

Additional information

Authors: SOLTWISCH H, Forschungszentrum Jülich GmbH (KFA) (DE)
Bibliographic Reference: Article: Contributions to High-Temperature Plasma Physics (1994) pp. 471-483
Record Number: 199411640 / Last updated on: 1995-01-10
Original language: en
Available languages: en