A spectral-kinetic recorder operating in a special time-gating mode has been developed for time-shifted measurement of time-resolved spectra and the kinetics of the spectral line emission in atomic emission analysis. The luminescence kinetics of copper, zinc, tin, and lead spectral lines were recorded in the case of two-pulse laser ablation of samples of pure metals and multicomponent alloys. It was determined that the luminescence kinetics of spectral lines can be approximated by exponential dependences with high accuracy for pure metals, while for multicomponent samples, the exponential decay of the analytical signal occured only at interpulse laser intervals <3 μs.
A spectral-kinetic recorder operating in a special time-gating mode was developed for time-shifted measurement of time-resolved spectra and emission-line intensity kinetics in atomic emission analysis. The luminescence intensity kinetics of Cu, Zn, Sn, and Pb were recorded for two-pulse laser ablation of pure metals and multicomponent alloys. The spectral-line intensity kinetics of pure metals could be approximated with high accuracy by exponential functions. The analytical signal for ablation of multicomponent samples decayed exponentially only for interpulse laser intervals <3 μs.