Experimental Widths and Shifts for3s−3pNeon Lines

Abstract

Widths and shifts of several neon red lines were measured as functions of electron densities [(0.4-2.1) \ifmmode\times\else\texttimes\fi{} ${10}^{17}$ ${\mathrm{cm}}^{\ensuremath{-}3}$] and neutral neon densities [(0.3-2.2) \ifmmode\times\else\texttimes\fi{} ${10}^{19}$ ${\mathrm{cm}}^{\ensuremath{-}3}$]. Conditions in a gas-driven shock tube were determined from pressure-temperature data and from the shapes of hydrogen Balmer lines. In each experiment, profiles of neon lines emitted by the plasma were compared directly with the line shapes obtained with a low-pressure neon lamp. Stark broadening and shift parameters were determined with accuracies of 20-30 and 20-25%, respectively. Measured broadening due to neon atoms should be reliable to 35-50%. Theoretical and experimental comparison data are presented.