Persons

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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The urgency of creating a math model of the amalgam components evaporation in discharge radiation sources (lamps) is determined by dependence of the special purpose discharge source radiation parameters on the irradiative additive vapor pressure, which depends on the dimensions and temperatures of discharge, cathode and anode volumes. In connection with a variety of discharge lamps constructions, a system of equations, allowing determining the amalgam components pressure, considering the specific design and the temperature profile of a discharge tube, has been presented in this work. The infrared radiation source design of the aircraft protection system has been described in detail. The effect of the amalgam mass and composition upon the pressure of the irradiative additive at fixed dimensions and temperatures of the discharge, cathode and anode volumes has been revealed. As a result of the performed calculations the dependences of cesium and mercury pressure versus the discharge tube cold point temperature have been obtained. The cesium pressure growth peculiarities at the discharge transmission from saturated vapors to unsaturated ones have been clarified.

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