Abstract

The authors investigate the effect of cadmium vapor on the intensity of the absorption lines of copper excited in a hollow cathode discharge produced in helium. The following combinations of copper and cadmium compounds were used: copper nitrate and cadmium nitrate; copper nitrate and cadmium chloride; copper chloride and cadmium nitrate; and copper chloride and cadmium chloride. The behavior of these combinations under electric discharge and vaporization conditions is assessed in terms of electron and ion collisions, thermodynamics, metastable state configurations, and ionization dependence on electric current.

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