Determination of Spectroscopic Parameters of Ag(I) and Ag(II) Emission Lines Using Time-Independent Extended C-Sigma Method

Appl Spectrosc. 2021 Jun;75(6):654-660. doi: 10.1177/0003702821999425. Epub 2021 Mar 8.

Abstract

The knowledge of the spectroscopic parameters of the elemental emission lines is important for diagnostics of laser-induced plasmas and the application of calibration-free/fundamental parameters analytical methods. In this paper, we used the recently proposed time-independent extended C-sigma method for determining, for the first time, the transition probabilities and Stark broadening coefficients of several neutral (TIECS) and ionic silver emission lines. The method allows for a compensation of self-absorption in the plasma, thus providing a measure of the spectroscopic parameters which is not affected by the optical thickness of the plasma.

Keywords: LIBS; Silver; Stark broadening; TIECS; laser-induced breakdown spectroscopy; time-independent extended C-sigma; transition probabilities.