He iiPαStark broadening and intensity ratio of C iv and C iii lines calibrated with Thomson scattering for high-density plasma diagnostics

With the help of Thomson scattering diagnostics we have measured the density dependence of the He i i $p_{\alpha }$ (468.6 nm) full half-width up to $n_e$=2.2×${10}^{24}$ ${\mathrm{m}}^{\mathrm{-}3}$ and the temperature dependence of the intensity ratio of the C i v (116.9 nm) and C i i i (117.6 nm) vacuum-uv lines from 9 to 13 eV. We also present a ready-to-use graphical method for the determination of electron density and temperature from the ion feature of the coherent 90° Thomson scattering (α≫1) from high-density hydrogen plasmas.