Back to results
US 10,825,635 B2Granted
Electron emitter for an x-ray tube
AssigneeLuxbright AB
InventorQiu-Hong Hu
Life of this patent
Estimating the term…
Abstract
Example embodiments presented herein are directed towards an electron emitter for an x-ray tube. The electron emitter comprises an electrically conductive substrate and a nanostructure material. The nanostructure material is comprised on at least a portion of the electrically conductive substrate. The nanostructure material is made of oxides, nitrides, silicides, selenides or tellurides. Such an electron emitter may be used for hybrid emission, such as Schottky emission or field emission.
Claims10
An electron emitter for an x-ray tube, the electron emitter comprising:
- an electrically conductive substrate;
- and
- a nanostructure material is comprised on at least a portion of the electrically conductive substrate, wherein the nanostructure material is made of ZnO,
- wherein the nanostructure material is grown on the electrically conductive substrate,
- wherein the electrically conductive substrate is attachable to a heating element via two electric feed-through at the cathode end of the tube;
- wherein the heating element is arranged to cause an increase in the temperature of the electron emitter to a level that assists the emission of electrons from the emitter when the cathode is negatively biased,
- wherein the electron emitter is configured for Schottky emission when the heating element is in an on-state and the electron emitter is negatively biased, and
- wherein the electron emitter is configured for field emission when the heating element is in an off-state and the electron emitter is negatively biased.
5 more elements
Dependencies are inferred from the claim text.