Large area directly heated lanthanum hexaboride cathode structur

Light source excited by high frequency for Zeeman effect atomic

Low volatility slurry for emission mix powder

Low work function materials for microminiature energy...

Low-temperature cathode having an emissive nanostructure

Mercury vapor discharge device

Metal cathode for electron tube

Method and apparatus for producing an electron beam from a therm

Method and apparatus for use with an electron gun employing...

Method of manufacturing a thermionic cathode and thermionic cath

Method of manufacturing integral shadow gridded controlled poros

Method of preparing an impregnated cathode with an enhanced ther

Method of providing electrical contact to a semiconductor cathod

Methods of manufacturing a dispenser cathode and dispenser catho

Multiple layer composite electrodes for discharge lamps and low

Oxidation resistant impregnated cathode

Oxide cathode

Oxide cathode

Oxide cathode

Oxide cathode