Heating experiments on the FT Tokamak in the lower hybrid frequency range

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Abstract
In this work we describe the heating results in the LH frequency range (f = 2.45 GHz, Prf lt=250 kW, Ps lt= 6 kW/cm2) both in the electron and ion regimes. Efficient electron heating was observed for n lt= 5.10 13 cm-3. Increases of the peak electron temperature up to 700 eV were measured. At higher densities the interaction with electrons disappears. In the ion regime fast neutral tails and neutron enhancement were observed. The influence of plasma boundary conditions on the penetration of the wave is demonstrated. The principal physical problems are pointed out and some possible conclusions are given.

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