Title :
Correlation of cathodes parameters of power grid tubes with materials characteristics of cathode-grid units
Author :
Melnikova, Irina P. ; Polyakov, Igor V. ; Usanov, Dmitry A.
Author_Institution :
Fed. State Unitary Enterprise NNP Almaz, Saratov, Russia
Abstract :
Ways of raise of longevity are shown at decrease of evaporation of dispenser cathodes as a result of decrease of reaction "activity" of emitter impregnant with porous W body which has the certain carrying capacity of free Ba from volume of the cathode on its surface.
Keywords :
barium; evaporation; porous materials; powders; thermionic cathodes; thermionic emission; tungsten; Ba; cathode life; dispenser cathodes; evaporation; pore size; powder; Annealing; Cathodes; Face detection; Failure analysis; Leakage current; Manufacturing; Powders; Power grids; Pressure measurement; Temperature;
Conference_Titel :
Vacuum Electron Sources Conference, 2004. Proceedings. IVESC 2004. The 5th International
Print_ISBN :
0-7803-8437-7
DOI :
10.1109/IVESC.2004.1414204
