Kurochkin V. Physic-Chemical Processes in a Glow Discharge and Spark Plasma at Mass-Spectrometric and Atom Emission Spectrometric Analysis of Metals and Ceramics Materials

The thesis is devoted to the investigations of physic-chemical processes in a glow discharge in Ar and spark plasma in air used in the mass-spectrometry and atom emission spectrometry analysis of new alloys and ceramic materials. The conception of effective equilibrium constants was proposed for calculation of molecular ions concentrations. With the use of the developed computer program mass-spectra was calculated for all isotopes of interest at analysis of various materials. Mass-spectrometric depth profiling study and Monte Carlo model were used to study influence of trace impurities on formation of multilayer Cu-Cr electron beam deposits. A mathematical model for spark discharge in air was developed and experimentally validated. Temperature, plasma composition and intensity of spectral lines of atoms and ions were calculated as functions of discharge parameters, composition and evaporation rate of electrodes.