Author/Authors :
Hamada، نويسنده , , Y and Nishizawa، نويسنده , , A and Kawasumi، نويسنده , , Y and Fujisawa، نويسنده , , A and Iguchi، نويسنده , , H، نويسنده ,
Abstract :
As the sample volume of a heavy ion beam probe (HIBP) is swept from the centre to the plasma boundary in the JIPP T-IIU tokamak, we observe that the correlation time of the density turbulence increases appreciably and the dominant frequency decreases appreciably. The transition is located near rap = 0.6 in a low density gas-puffed plasma and an NBI-heated (neutral beam injection) plasma. Its position moves outwards in an R.F. heated plasma.
