X-ray anode, x-ray emitter and method for producing an x-ray anode

Abstract

The invention relates to a x-ray anode (6) for an x-ray emitter (100). The x-ray anode has a structured surface (14) provided for impingement with electrons (e). According to an embodiment of the invention, the structured surface (14) has a surface structure (20) which alternates periodically at least in sections and which varies in the micrometer range with respect to its depth extension (T) andperiodicity (P).

Description

technical field [0001] The invention relates to an x-ray anode, an x-ray radiator and a method for producing an x-ray anode. Background technique [0002] X-ray emitters are widely known in various embodiments in the prior art. Usually, there is a potential difference between the cathode and the x-ray anode of the x-ray radiator, so that electrons emitted by the cathode are accelerated towards the x-ray anode. The electrons hit the x-ray anode in the region of the focal point and are braked there to emit x-ray radiation, in particular bremsstrahlung. The x-ray anode can, for example, be designed stationary as a so-called stationary anode with a typically substantially centrally arranged cathode, or it can be rotated about an axis of rotation. By turning about the axis of rotation, the area that is thermally loaded due to the loading of electrons is effectively increased. Such x-ray radiators therefore have a rotating anode, wherein the cathode is typically arranged centra...

AI Technical Summary

Problems solved by technology

This results in a relatively high backscattering rate, so that in particular laterally arranged exit windows for x-ray radiation are hit by electrons that are hardly braked

The electrons striking the exit window generate X-ray radiation there, which as out-of-focus radiation reduces the image quality of the resulting X-ray image in particular

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