Measurements of intrinsic ion Bernstein waves in a tokamak by collective Thomson scattering |
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| Authors: | Korsholm S B,Stejner M,Bindslev H,Furtula V,Leipold F,Meo F,Michelsen P K,Moseev D,Nielsen S K,Salewski M,de Baar M,Delabie E,Kantor M,Bürger A TEXTOR Team |
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| Affiliation: | Association EURATOM-Ris? National Laboratory for Sustainable Energy, Technical University of Denmark, Roskilde, Denmark. sbko@risoe.dtu.dk |
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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. |
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