Measurement of the time constants of fast electron distributions in the Tore Supra tokamakFunded under: EAEC-FUSION 12C
The fundamental phenomena governing the dynamics of anisotropic electron distributions in a tokamak plasma are investigated. A fast electron tail driven by modulated pulses of lower hybrid waves is analysed by a combination of three diagnostics: hard X-rays, electron cyclotron emissions, and transmission. Three different time constants, characterising radial diffusion, collisional friction, and pitch-angle scattering, respectively, are identified. Two distinct relaxation regimes are observed, related to the degree of anisotropy of the electron distribution.
Bibliographic Reference: Article: Physical Review Letters, Vol. 74 (1995) No. 4, pp. 550-553
Record Number: 199510611 / Last updated on: 1995-06-06
Original language: en
Available languages: en