Sr⁺excitation and electron temperatures in an Sr⁺laser

Abstract

Measurement of the relative intensities of three spectral lines originating from different upper levels in the Sri ion h a s enabled u s to follow the variation with time of the excitation temperature in the afterglow of a pulsed strontium-vapour laser discharge. From an equation connecting the population of three levels in the presence of a steady-state electron recombination flux, it has been attempted to deduce the corresponding values of the electron temoerature throughout the afterglow period in which laser action occurs

Theoretical and experimental determination of gas and electron temperatures for gas discharges in Ne and He mixtures with copper, bromine, hydrogen and strontium

“…In the case of local thermodynamic equilibrium (LTE), a measurement of the relative intensity ratio of two lines, originating from different upper levels i and j , usually, but not necessarily, terminating at the same lower levels, would be sufficient for the determination of the electron temperature. In this case the measured relative intensity ratio is given by [18]…”