C.Mazzotta Peaked Density Profiles due to Neon Injection on FTU

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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.