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Abstract

The injection of pellets into tokamak discharges leads to a density increase, to the excitation of modes, to a profile peaking and to an improvement of the confinement. Here two topics are treated: (i) the profile peaking after the pellet injection as a function of the plasma current and the safety factor q(a); (ii) the mode excitation in runaway discharges and its influence on the runaways. An important diagnostic tool used for these measurements is the synchrotron radiation generated by the runaways. The emission of the synchrotron radiation allows the use of runaways as probes for the central plasma.

Additional information

Authors: FINKEN K H ET AL., Forschungszentrum Jülich GmbH (KFA) (DE);SATO K, National Institute for Fusion Science, Nagoya (JP);JASPERS R, FOM Instituut voor Plasmafysica, Rijnhuizen, Nieuwegein (NL);BOEDO J A, University of California at Los Angeles, Institute for Plasma and Fusion Research (US);GRAY D S, University of California at Los Angeles, Institute for Plasma and Fusion Research (US)
Bibliographic Reference: Article: Proceedings of the 20th European Conference on Controlled Fusion and Plasma Physics, Vol. I (1993) pp. 131-134
Record Number: 199311162 / Last updated on: 1994-11-29
Category: PUBLICATION
Original language: en
Available languages: en
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