Linear Stark Broadening in High-Density Lithium Plasma

Abstract

High-density plasma was produced by exploding lithium wires. At the average electron concentration obtained, 2.5 \ifmmode\times\else\texttimes\fi{} ${10}^{17}$ ${\mathrm{cm}}^{\ensuremath{-}3}$, the measured Stark profile of the $2p\ensuremath{-}5d$ line is shown to be almost identical to that calculated for the ${\mathrm{H}}_{\ensuremath{\gamma}}$ line of hydrogen at the same electron concentration. The transition from quadratic to linear Stark broadening is discussed.