Author/Authors :
Kurimoto، نويسنده , , Y and Zushi، نويسنده , , H and Sano، نويسنده , , F and Kondo، نويسنده , , K and Mizuuchi، نويسنده , , T and Besshou، نويسنده , , S and Okada، نويسنده , , H and Nagasaki، نويسنده , , K and Kinoshita، نويسنده , , T and Peterson، نويسنده , , B.J and Christou، نويسنده , , C and Funaba، نويسنده , , H and Hamada، نويسنده , , T and Isayama، نويسنده , , A and Obiki، نويسنده , , T، نويسنده ,
Abstract :
In the Heliotron E device, fast ion slowing-down processes (deceleration, parallel diffusion, and pitch angle scattering) and the particle loss process are investigated by the measurement temporal behaviour of charge-exchange energy spectra during neutral beam injection (NBI). Using electron cyclotron resonance heating (ECRH), two effects are studied with respect to: (1) extrapolation of slowing-down behaviour to a longer slowing-down time and (2) modification of the ion loss associated with the radial electric field. It is found that (1) there are discrepancies :in the theoretical value in the deceleration and the parallel diffusion processes in NBI + ECRH and ECRH plasmas, and that (2) the particle loss is reduced by the use of ECRH on the NBI plasma.
