PLASMA CATHODE Russian patent published in 2013 - IPC H05H1/34 

FIELD: electricity.

SUBSTANCE: plasma cathode includes hollow holder 1 with end walls 2, 3 and feedthrough holes 4, 5 for working medium, inside which emitter 6 is arranged, between which barrier layer 7 of chemically passive material is located; between inner surfaces 8 of the hollow holder and outer surfaces 9 of the emitter there are gaps 10, 10a, 10b, between which screen 11 is arranged. Surfaces of the screen are coated with barrier layers 7a.

EFFECT: improving reliable operating period and reducing labour intensity for manufacture.

6 cl, 1 dwg