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. WilsonA. Wouters

Research output: Contribution to journalArticle

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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

  • Physics and Astronomy(all)

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    Ono, M., Beiersdorfer, P., Bell, R., Bernabei, S., Cavallo, A., Chmyga, A., Cohen, S., Colestock, P., Gammel, G., Greene, G. J., Hosea, J., Kaita, R., Lehrman, I., Mazzitelli, G., Mazzucato, E., McNeill, D., Sato, K., Stevens, J., Timberlake, J., ... Wouters, A. (1988). Effects of high-power ion Bernstein waves on a tokamak plasma. Physical review letters, 60(4), 294-297. https://doi.org/10.1103/PhysRevLett.60.294