SECONDARY-EMISSION RADIO-ISOTOPE CURRENT SUPPLY Russian patent published in 1995 - IPC

FIELD: electric discharge tubes or lamps. SUBSTANCE: current supply has sealed and evacuated case 1 accommodating layer of radio-isotope 2 and emitters 3 on its either side in the form of alternating layers 4 and 5 of two different materials with unequal coefficient of secondary electron emission. Layers 4 and 5 of emitters 3 made of metal or semiconductor are electrically isolated by grids 6 of insulating material placed in gaps 7 that may be applied directly on layers 4 and 5. Grids 6 also serve to afford stiffness for layers 4 and 5 at considerable decrease in their thickness. EFFECT: improved design. 4 cl, 2 dwg, 1 tbl