Electron gun and radiation generating apparatus
AssigneeSiemens Aktiengesellschaft
InventorOliver Heid
Life of this patent
Estimating the term…
Abstract
The invention relates to an electron gun for generating a flat electron beam, comprising a cathode with an emission surface which is curved about a central axis and which is designed to emit electrons. The electron gun further comprises an accelerating device for accelerating the electrons in a radial direction towards a target region on the central axis. Furthermore, the emission surface has a width in the azimuth direction and a height oriented perpendicularly to the width, said width being at least ten times greater than the height.
Claims17
An electron gun for generating a flat electron beam, the electron gun comprising:
- a cathode comprising an emission surface that is curved about a central axis and is configured to emit electrons;
- and
- an accelerator operable to accelerate the electrons in a radial direction toward a target region on the central axis,
- wherein the emission surface has a width in an azimuthal direction, and the emission surface has a height oriented perpendicularly to the width, and
- wherein the width is at least ten times the magnitude of the height.
A radiation generating apparatus comprising:
- an electron gun for generating a flat electron beam, the electron gun comprising:
- a cathode comprising an emission surface that is curved about a central axis and is configured to emit electrons;
- and
- an accelerator operable to accelerate the electrons in a radial direction toward a target region on the central axis, wherein the emission surface has a width in an azimuthal direction, and the emission surface has a height oriented perpendicularly to the width, and wherein the width is at least ten times the magnitude of the height;
- and
- a target structure arranged in the target region.
Dependencies are inferred from the claim text.