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Abstract

The linear relativistic theory of electron cyclotron wave propagation predicts partial absorption of the extraordinary mode at the 3rd electron cyclotron harmonic for typical parameters of present-day tokamak plasmas. Since the waves are not totally damped, a quantitative confirmation of such predictions is important to firmly establish this particular resonance scheme for plasma heating and current drive. Specific experiments have been performed on Tore Supra, to measure the optical thickness of the 3rd harmonic extraordinary mode for vertical propagation, over the full frequency spectrum. Comparison with ray-tracing/absorption calculations provides a direct validation of the linear relativistic theory.

Additional information

Authors: SÉGUI J L, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);MICHELOT Y, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);GIRUZZI G, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);GOODMAN T ET AL., Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne (CH);SEGUI J L, CEA, Departement de Recherches sur la Fusion Controlee, CEN Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: Report: EUR-CEA-FC-1548 EN (1995) 15 pp.
Availability: Available from CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR)
Record Number: 199511438 / Last updated on: 1995-11-03
Category: PUBLICATION
Original language: en
Available languages: en