Evaluation of the ion temperature profile from measurements of the DD fusion products in the T-10 tokamak

Results are presented from measurements of the energy spectra and fluxes of the escaping charged fusion products and fluxes of fusion neutrons in ohmi c regimes of the T-10 tokamak. The central temperature of the plasma ions i s determined from the broadening of the energy spectra of thermonuclear pro tons and tritons. The ion temperature profile is evaluated from the depende nce of the fluxes of charged fusion products on the radial plasma shift. It is proposed to use a single spectrometric detector with several collimator s and slowing-down foils to measure the distribution of charged fusion prod ucts over pitch angles, which permits the determination of the ion temperat ure profile in a single shot. The feasibility of the method proposed is pro ved experimentally. (C) 2000 MAIK "Nauka/Interperiodica".