Abstract
We report here on high-resolution spectral measurements of Stark-broadened 3d-5f lines from lithiumlike ions and 3d-4f lines from heliumlike ions. The spectra were emitted from high-density laser-produced plasmas. Plasmas were produced by irradiating thin- and thick-foil targets made of magnesium, aluminum, phosphorus, and chlorine with the OMEGA laser in a line-focus geometry. Line profiles were compared to a Stark-broadening calculation that uses the static-ion approximation and an impact approximation for the electrons. The dependence of Stark broadening on atomic number is discussed. For the aluminum plasmas \ensuremath{\sim}10% narrowing was observed in the width of the 3d-5f line as the length of the plasma was increased from 3 to 6 mm.
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