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This new kind of air-cathode, with a simple fabrication process, greatly reduced the energy consumption, cost and complexity of air-cathode fabrication.
This method is a simple and effective method to synthesize cathode material.
This allows the implementation of almost every cathode material.
The principles described are quite general and may be applied to other cathode-ray tube and camera tube designs.
Moreover, experimental results indicate the possibility for further simplification of the cathode manufacture.
This method is useful for applications, such as field-emission lamps and x-ray tubes, which do not require nanofabricated cathode structures.
The high brightness of the FE e-beam coupled with the array structure of the cold cathode allows a smoother control of the x-ray emission intensity.
Proceedings ArticleDOI
Zhifei Wen, Rebecca Fahrig, Norbert J. Pelc 
05 Jun 2003
11 Citations
We conclude that fixed anode x-ray tubes can be used in a magnetic field although its desired electron optics must be fairly “straight” and the cathode-anode axis must be well aligned with the field.
The experiments indicate that such cathodes ensures emission current densities averaged over the cathode surface of about 0.5 A/cm2 and can be used in high-voltage devices including microwave electronic instruments as well as portable X-ray sources.

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