Measurements of Intrinsic Ion Bernstein Waves in a Tokamak by Collective Thomson Scattering

S.B. Korsholm, M. Stejner, H. Bindslev, V. Furtula, F. Leipold, F. Meo, P.K. Michelsen, D. Moseev, S.K. Nielsen, M. Salewski, Marco de Baar, E.G. Delabie, M. Kantor, A. Bürger

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Abstract

In this Letter we report measurements of collective Thomson scattering (CTS) spectra with clear signatures of ion Bernstein waves and ion cyclotron motion in tokamak plasmas. The measured spectra are in accordance with theoretical predictions and show clear sensitivity to variation in the density ratio of the main ion species in the plasma. Measurements with this novel diagnostic demonstrate that CTS can be used as a fuel ion ratio diagnostic in burning fusion plasma devices.
Original languageEnglish
Article number165004
Pages (from-to)165004-1/4
Number of pages4
JournalPhysical Review Letters
Volume106
Issue number16
DOIs
Publication statusPublished - 2011

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