Observation of bulk-ion heating in a tokamak plasma by application of positive and negative current pulses in TRIAM-1

K. Toi, N. Hiraki, Kazuo Nakamura, O. Mitarai, Y. Kawai, Sanae Itoh

Research output: Contribution to journalLetter

12 Citations (Scopus)

Abstract

A positive or negative current pulse induced by a pulsed toroidal electric field much higher than the Dreicer field increases the bulk-ion temperature of the plasma centre two to three times, without macroscopic plasma destruction. The decay time of the raised ion temperature agrees well with the prediction from neoclassical transport theory. The magnitude of the positive current pulse is limited by violent current disruption, and that of the negative current by a lack of MHD equilibrium which is due to a marked reduction of the total plasma current. The relevant current-driven instabilities in the turbulent heating of a tokamak plasma, skin heating and inward transfer of the energy deposition in the skin layer are briefly discussed.

Original languageEnglish
Pages (from-to)1169-1172
Number of pages4
JournalNuclear Fusion
Volume20
Issue number9
DOIs
Publication statusPublished - Jan 1 1980

Fingerprint

heating
pulses
ion temperature
ions
transport theory
plasma currents
destruction
electric fields
decay
predictions
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Observation of bulk-ion heating in a tokamak plasma by application of positive and negative current pulses in TRIAM-1. / Toi, K.; Hiraki, N.; Nakamura, Kazuo; Mitarai, O.; Kawai, Y.; Itoh, Sanae.

In: Nuclear Fusion, Vol. 20, No. 9, 01.01.1980, p. 1169-1172.

Research output: Contribution to journalLetter

Toi, K. ; Hiraki, N. ; Nakamura, Kazuo ; Mitarai, O. ; Kawai, Y. ; Itoh, Sanae. / Observation of bulk-ion heating in a tokamak plasma by application of positive and negative current pulses in TRIAM-1. In: Nuclear Fusion. 1980 ; Vol. 20, No. 9. pp. 1169-1172.
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