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Abstract

The solution of the Fokker-Planck quasilinear equation describing lower-hybrid current drive is obtained numerically using a 2-D code. It is shown that the current-carrying superthermal tail has, in general, a counter-current component resulting from pitch-angle scattering and imperfect one-directional wave launching. This new feature of the fast tail makes emission and transmission of cyclotron radiation normal to the magnetic field unsuitable for diagnosing the energetic electron population. The appropriate diagnosis must rely on emission and/or transmission of electron-cyclotron wave away from normal.

Additional information

Authors: FIDONE I, CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR);GIRUZZI G, CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR);MARCHA M J, CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: Report: EUR-CEA-FC-1389(a) EN (1990) 12 pp.
Availability: Available from CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR)
Record Number: 199011263 / Last updated on: 1994-12-01
Category: PUBLICATION
Original language: en
Available languages: en