MHD Spectroscopy through Detecting Toroidal Alfvén Eigenmodes and Alfvén Wave Cascades

By S. Sharapov, D. Testa, B. Alper, D. Borba, A. Fasoli, N. Hawkes, R. Heeter, M. Mantsinen, M.G Von Hellermann. 2001

149 citations recorded by the source corpus.

Abstract Toroidal Alfven eigenmodes and a new class of modes, the Alfven cascades, excited by energetic ions are observed in the JET tokamak. Measurements of these Alfven instabilities are used to solve the inverse problem of identifying the plasma parameters using the dependence of the Alfven spectrum on equilibrium parameters.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/a7418c06caef9dc12f72f8ddcc9c185cc225d953

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1. T. Johnson
2. A. Figueiredo
3. JET Contributors
4. M. Nave
5. C. Boswell

Citations in the corpus

• Explanation of the JET n = 0 chirping mode (2006, background): “…frequency chirping modes have been observed in discharges with a reversed magnetic shear as evidenced by the existence of Alfvén cascades (ACs) (Sharapov et al 2001, Berk et al 2001), but they have also been observed in discharges with steady frequency toroidal Alfvén eigenmodes (TAEs) and…”