Observation of Multiple Kinetic Alfvén Eigenmodes

A. Fasoli; J. B. Lister; S. Sharapov; D. Borba; N. Deliyanakis; C. Gormezano; J. Jacquinot; A. Jaun; H. A. Holties; G. T. A. Huysmans; W. Kerner; J.-M. Moret; L. Villard

doi:10.1103/PhysRevLett.76.1067

Observation of Multiple Kinetic Alfvén Eigenmodes

A. Fasoli, J. B. Lister, S. Sharapov, D. Borba, N. Deliyanakis, C. Gormezano, J. Jacquinot, A. Jaun, H. A. Holties, G. T. A. Huysmans, W. Kerner, J.-M. Moret, and L. Villard

Phys. Rev. Lett. 76, 1067 – Published 12 February 1996

Abstract

Multiple weakly damped Alfvén eigenmodes (AE) have been excited and detected by means of a dedicated active diagnostic in JET tokamak plasmas heated by ion cyclotron resonance heating, neutral beam injection heating, lower hybrid heating, and high plasma current Ohmic heating. This phenomenon is interpreted in terms of a new class of AE, the kinetic AE, predicted in theoretical models which include finite Larmor radius and toroidicity effects.

Received 18 May 1995

DOI:https://doi.org/10.1103/PhysRevLett.76.1067

Authors & Affiliations

A. Fasoli^1,2, J. B. Lister^1,2, S. Sharapov¹, D. Borba¹, N. Deliyanakis¹, C. Gormezano¹, J. Jacquinot¹, A. Jaun², H. A. Holties³, G. T. A. Huysmans¹, W. Kerner¹, J.-M. Moret^1,2, and L. Villard²

¹Joint European Torus Joint Undertaking, Abingdon, Oxfordshire OX14 3EA, United Kingdom
²Centre de Recherches en Physique des Plasmas, Association EURATOM–Confédération Suisse, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
³FOM Institute for Plasma Physics, Rijnhuizen, Nieuwegein, Netherlands