1. C.Mazzotta Peaked Density Profiles due to Neon Injection on FTU
EX/P2-52
#37342 at 0.7s
#37342 at 1.2s
#37344 at 0.7s
#37344 at 1.2s ρ
m2/s
#37342 Ne injection at 0.6 s
#37344 no impurity
High χi with density increase by D puffing
χi at low density
Line averaged central density
Low ion thermal diffusivity with spontaneous density peaking after Ne doping
Ion thermal diffusivity profiles
In FTU the Neon injected discharges show a spontaneous rise of the electron density with an increase of the peaking factor of 30%.
Peaking
Transport analysis has shown that the presence of the Neon induces a decrease of the ion thermal diffusivity
An estimate of the particle transport coefficients D e U confirms that the Neon doped discharge has more inward pinch.