This paper considers the temporal behaviour of fast ions produced in a tokamak plasma by the injection of a periodically pulsed neutral beam. It is shown that, if the temporal distance between the pulses is properly chosen, then a dense bunch of fast ions is formed near a certain resonant magnetic surface. The temporal and spatial behaviour of these bunches is studied in some detail for the simple model of a tokamak with large aspect ratio. Possible implications of this phenomenon for diagnostics are discussed.
Resonance phenomena accompanying the injection of a periodically pulsed neutral beam into a tokamak
D Farina;
1993
Abstract
This paper considers the temporal behaviour of fast ions produced in a tokamak plasma by the injection of a periodically pulsed neutral beam. It is shown that, if the temporal distance between the pulses is properly chosen, then a dense bunch of fast ions is formed near a certain resonant magnetic surface. The temporal and spatial behaviour of these bunches is studied in some detail for the simple model of a tokamak with large aspect ratio. Possible implications of this phenomenon for diagnostics are discussed.File in questo prodotto:
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