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Dr. Sci. (Eng.), Head of the Light Sources Department, Scientific and Industrial Enterprise “Melitta” LTD (Russia, 117437, Moscow, Miklukho-Maklaya st., 16/10, bld. 1)
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The mechanism of the alkali metal leakage at the glass-ceramic junction of sapphire-niobium has been analyzed. The physical fundamentals of leakage monitoring of alkali metal based on the radiation intensity of the resonance lines have been considered and a thermodynamic evaluation of the reliability of the glass-ceramic junctions has been performed. Based on the developed method the decrease dependence in the rubidium resonance lines intensity over the life of the high-frequency low-pressure cells has been obtained and the recommendations how practically to apply the proposed method and the obtained have been provided.
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