Fabrication of a New Cold Electron Emitter Type (Metal- insulator -metal) Using (Al - Al 2O3 – Pt)

Abstract

The use of cold electronic emitters in the production of X-rays is one of the most promising new applications. In this research, a cold electronic emitter with three layers (metal - insulator - metal) was achieved using aluminum, platinum and aluminum oxide, respectively.

The results showed the effectiveness of this emitter in producing a stable current in microamperes. It works under the influence of high voltage difference of up to 2000 volts and maintains a stable state, where the relationship between current and voltage shows that it follows the Fowler-Nordheim curve.

The use of a cold electron emitter instead of a heated emitter in the X-ray tube makes the temperature of the X-ray tube significantly lower. It may also reduce the cost of producing an X-ray tube.