Fokker-Planck modelling of the lower-hybrid current drive and its investigation using cyclotron radiation
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.
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
Original language: en
Available languages: en