Abstract: An apparatus is provided for generating X-ray radiation in an outer magnetic field, which may be generated by a magnetic field device. The apparatus includes a cathode configured to generate an electron beam and an anode configured to retard the electrons of the electron beam and generate an X-ray beam. The apparatus further includes a device configured to generate an electric field orientated from the anode in the direction of the cathode and substantially collinear to the outer magnetic field, wherein the cathode, as an electron emitter, includes a cold cathode that passively provides free electrons by field emission.

Abstract: An evacuable outer housing having at least one X-ray-permeable beam exit window, an electron source, an anode and a collector for catching electrons which penetrate the anode are included as an X-ray source. The collector is part of an electrical current circuit for applying a negative potential to the anode, and the radiation window is disposed such that X-ray radiation which exits from the anode at an angle of 130 degrees to 230 degrees to the electron beam direction can be coupled out through the radiation window. An imaging system includes such an X-ray, an arrangement to accommodate an object to be examined, and an X-ray detector.

Abstract: A device for producing x-ray radiation including an anode with a target layer, a cathode for emitting an electron beam a deflection unit for deflecting the electron beam onto the target layer by means of an electric field and a focusing unit for focusing the electron beam is provided.

Abstract: An anode for generating X-radiation having a holder and a target layer held by the holder, the target layer comprising a middle section and an edge section, is provided. The anode is provided for being exposed to an electron beam directed at the middle section of the target layer. The edge section is arranged laterally next to the middle section in relation to the direction of the electron beam. Furthermore, the edge section is thicker than the middle section in the direction of the electron beam.