Gaseous phase monitoring during reactive sputtering of yttrium in glow discharges
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The emission and fluorescence spectra at wavelengths of 580–650 nm during sputtering of yttrium, zirconium, and their alloys are studied for the purpose of developing spectroscopic methods for monitoring the composition of the gaseous phase during cathode sputtering of these metals in glow discharges in oxygen-argon atmospheres. The 584.2, 585.9, 587.4; 613.2, 614.8, 616.5, 617.9; 647.1, 648.7, and 650.3 nm lines are identified as molecular lines of yttrium oxide. The corresponding electronic transition energies are calculated. A correlation is found between the behavior of the emission and fluorescence spectra of the gaseous phase within this wavelength range during sputtering of yttrium in glow discharges and changes in the concentration of the oxygen-argon mixture. The dependence of the fluorescence and emission line intensities of the yttrium oxide molecule on the partial pressure of oxygen is studied.
Keywordslaser fluorescence glow discharge reactive cathode sputtering molecular spectra.
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