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Effects of high-power ion Bernstein waves on a tokamak plasma

  • M. Ono
  • , P. Beiersdorfer
  • , R. Bell
  • , S. Bernabei
  • , A. Cavallo
  • , A. Chmyga
  • , S. Cohen
  • , P. Colestock
  • , G. Gammel
  • , G. J. Greene
  • , J. Hosea
  • , R. Kaita
  • , I. Lehrman
  • , G. Mazzitelli
  • , E. Mazzucato
  • , D. McNeill
  • , K. Sato
  • , J. Stevens
  • , J. Timberlake
  • , J. R. Wilson
  • A. Wouters

Research output: Contribution to journalArticlepeer-review

Abstract

Effects of high-power ion-Bernstein-wave heating on the PLT tokamak plasmas have been investigated with up to 650 kW of rf power coupled to the plasma. A significant improvement in the deuterium particle confinement (as much as 300%) during high-power ion-Bernstein-wave heating has been observed. Associated with it, a longer injected-impurity-confinement time, reduced drift-wave turbulence activity, frequency shifts of drift-wave turbulence, and development of a large negative edge potential were observed. The ion heating efficiency, Ti(0)nePrf=6×1013 eV cm-3/kW, without high-energy tail ions, is relatively constant up to the maximum rf power.

Original languageEnglish (US)
Pages (from-to)294-297
Number of pages4
JournalPhysical review letters
Volume60
Issue number4
DOIs
StatePublished - 1988

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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