Preparation of dental amalgam and spectral diagnosis of mercury in plasmas-laser in the region of 250 nm _ 850 nm

2nd International Meeting for Researchers in Materials and Plasma Technology

物理学;材料科学

De La Ossa, A.^1 ; Pacheco, P.^1 ; Sarmiento, R.^1

Grupo de Espectroscopía Óptica de Emisión y Laser-GEOEL, Universidad Del Atlántico, Barranquilla, Colombia^1

关键词: Atomic parameter;    Boltzmann;    Different proportions;    Laserinduced breakdown spectroscopy (LIBS);    ND : YAG lasers;    Spectral diagnosis;    Spectral line;    Spectral studies;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/466/1/012017/pdf
DOI  :  10.1088/1742-6596/466/1/012017

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In this paper we presents results of the spectral study of plasmas-laser of dental amalgam by technique Laser-induced Breakdown Spectroscopy (LIBS). Plasmas were generated focusing the beam of a Nd: YAG laser on the matrix of the mixture Ag-Sn-Cu and on amalgams with different proportions of mercury (3:2, 5:2, 6:2). Based on the spectral results and reported atomic parameters, became estimation of electron temperature plasmas- laser and their behavior with the concentration of Hg. The estimated values of the electron temperature for the respective proportions were 20 846 K, 19 139 K and 16 872 K, using the distribution of population of Boltzmann energy levels associated with spectral lines, considering conditions Local Thermodinamic Equilibrium (LTE) of plasmas.