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The evolution of the electron emission of impregnated cathodes has been measured over many thousands of hours of operation at various temperatures in diodes and traveling‐wave tubes. Certain physical… Continue Reading
Abstract The studies reported here involve a number of investigation methods suitable for characterizing and comparing the performances of B, S, M and mixed matrix cathodes (MM). Long term zero field… Continue Reading
As a consequence of the interest shown by astronomers for observation on board a space platform in the submillimetre-wave range, the European Space Agency has initiated a research and development… Continue Reading
Keywords: urbanisme et amenagement du territoire ; intervention paysagere et environnementale ; rehabilitation ; riviere ; ville ; Yverdon ; Thiele ; Suisse romande ; Vaud ; Suisse ; Europe Note:… Continue Reading
THE INVENTION RESPECT CATHODE THERMO ELECTRON TUBE MICROWAVE. SUCH CATHODE INCLUDES A BODY PARALLEL IN MOLYBDENUM 1 SURROUNDING FILAMENT HEATING 2 AND ABOVE THE THREAD OVERLAY TWO POROUS BODY , ONE… Continue Reading