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