EFFECT OF 1% Nа ON THE INTENSITY DISTRIBUTION OF THE SAMPLE ATOMS IN NITROGEN MICROWAVE PLASMA WITH AXIAL AND RADIAL OBSERVATION

Abstract

The effect of 1% Na with axial and radial observation of microwave plasma on the analytical characteristics of the optical spectrometer “Grand-Microwave” is investigated. The presence of 1% Na in the analyzed sample leads to a decrease in the intensities of spectral lines with energies of 6 - 14 eV with the axial observation method by 8 - 50 times, and with the radial method by 2,5 - 8 times, depending on the observation area. The intensity of lines with energies of 1.6 - 6 eV increases by up to 20 times in the axial view, and by 4 to 6 times in the radial view. In the presence of Na, the ratio of the intensities of Mg (II) 280 nm and Mg (I) 285 nm decreases by 2 orders of magnitude for both observation methods, the temperature at the periphery of the axial view of the plasma decreases by 1300 K, and the temperature at the lower boundary of the radial view decreases by 2300 K. The method and scope of the review for the analysis of 25 chemical elements with minimal matrix influences Na and the efficiency of using the recommended areas was evaluated.