Abstract
The active particle diagnostic technique is used to study the ion temperature at five spatial points along the path of a hydrogen diagnostic beam. The temperature of the main ion plasma component (deuterium ions) measured by this diagnostic technique along the beam path is compared with the temperature of carbon ions (C+5). A study is made of the following characteristic features of the behavior of the ion temperature profiles Ti in various TORE SUPRA operating modes: the formation of flat and even hollow Ti profiles in ohmic discharges with q ∼3 at the plasma edge, the change in Ti profiles in ergodic divertor discharges, and the difference between the temperature of the bulk ions measured by the active particle diagnostic technique and the temperature of C+5 ions in the plasma region r/a>0.5. The features revealed are explained at a qualitative level.
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