Laser-induced breakdown spectroscopy for Stark broadening and shift experiments: Measurement of Fe II and Ni II Stark shifts

22nd International Conference on Spectral Line Shapes

Aragón, C.^1 ; Aguilera, J.A.^1 ; Manrique, J.^2

Departamento de Física, Universidad Pública de Navarra, Campus de Arrosadía, Pamplona

E-31006, Spain^1

Facultad de Farmacia, Universidad CEU San Pablo, Urbanizatión Montepríncipe, Boadilla Del Monte, Madrid

E-28668, Spain^2

关键词: Background ratio;    Glass samples;    Laser induced plasma;    Plasma evolution;    Plasma generation;    Self absorption;    Stark broadenings;    Stark width;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/548/1/012032/pdf
DOI  :  10.1088/1742-6596/548/1/012032

来源: IOP

【 摘 要 】

We present experimental studies on characterization of laser-induced plasmas relevant for the measurement of Stark widths and shifts by laser-induced breakdown spectroscopy. The selection of samples for plasma generation is investigated. It is shown that fused glass samples provide spectra with much higher line-to-background ratio for many lines of interest, compared to alloys. The influence of self-absorption on the line width is studied as a function of the concentrations of the emitting element in the sample and time of the plasma evolution. New Stark shifts for several Fe II and Ni II are measured.