Controlled-Porosity Dispenser Cathode.
DEPARTMENT OF THE NAVY WASHINGTON D C
Pagination or Media Count:
An emissive member for a controlled-porosity, dispenser-type cathode comprising a three-component sandwich consisting of 1 a supporting disc 2 a layer of nonsintered alkaline earth material on said disc and 3 a thin perforated foil on said layer. The foil is made of refractory metal and has a uniform pattern of tiny holes through which the active material of the reservoir migrates to coat the surface of the foil, the foil thus serving as the electron-emitting surface of the cathode. Author
- Electricity and Magnetism