Streamers in the JIPP T-llU tokamak plasmas

Y. Hamada, T. Watari, A. Nishizawa, K. Narihara, Y. Kawasumi, T. Ido, M. Kojima, K. Toi

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

It is shown that the low-density Ohmically heated tokamak plasmas have streamerlike eddies at the outer region at normalized minor radius of about 0.7 and high-frequency zonal flows of large amplitudes in the core. The amplitudes of the eddies eΦ∼/kTe and n∼ e/n̄e are of order of 0.5, similar to that of blobs in the tokamak plasma boundary. The waveforms are featured by pulses of complex shape with sharp fronts, similar to the results of streamer simulations by Garbet et al. The time constant of the fronts is also in agreement with the simulation. The radial span of the eddies is estimated to be much larger than the poloidal span.

Original languageEnglish
Article number115003
JournalPhysical Review Letters
Volume96
Issue number11
DOIs
Publication statusPublished - Mar 30 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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