A target is for generating X-ray radiation by way of loading with a particle stream containing charged particles. In an embodiment, the target includes a layer structure including at least two metallic layers. A target surface, loadable by the particle stream, is formed by a first layer of the at least two metallic layers of the layer structure including a material including a first metallic element. A second layer of the at least two metallic layers of the layer structure includes a material including a second metallic element. Finally, an ordinal number of the first metallic element is less than an ordinal number of the second metallic element.

An x-ray tube includes an electron emitter to emit an electron beam; and a multilayer anode including a first anode layer facing the electron beam and a second anode layer facing away from the electron beam. The first anode layer includes a first anode material to generate a braking radiation via the electron beam and the second anode layer includes a second anode material to generate a further x-ray radiation via the braking radiation. Thee further x-ray radiation is relatively more monochromatic than the braking radiation and wherein the first anode layer and the second anode layer adjoin in a planar manner.

An x-ray target, x-ray source, and x-ray system are provided. The x-ray target includes a thermally conductive substrate comprising a surface and at least one structure on or embedded in at least a portion of the surface. The at least one structure includes a thermally conductive first material in thermal communication with the substrate. The first material has a length along a first direction parallel to the portion of the surface in a range greater than 1 millimeter and a width along a second direction parallel to the portion of the surface and perpendicular to the first direction. The width is in a range of 0.2 millimeter to 3 millimeters. The at least one structure further includes at least one layer over the first material. The at least one layer includes at least one second material different from the first material. The at least one layer has a thickness in a range of 2 microns to 50 microns. The at least one second material is configured to generate x-rays upon irradiation by electrons.

According to some aspects, a monochromatic x-ray source is provided. The monochromatic x-ray source comprises an electron source configured to generate electrons, a primary target arranged to receive electrons from the electron source to produce broadband x-ray radiation in response to electrons impinging on the primary target, and a secondary target comprising at least one layer of material capable of producing monochromatic x-ray radiation in response to incident broadband x-ray radiation emitted by the primary target.

Fabrication of a multi-layer X-ray source is disclosed using bulk structures to fabricate a multi-layer target structure. In one implementation, layers of X-ray generating material, such as tungsten, are interleaved with thermally conductive layers, such as diamond layers. To prevent delamination of the layers, various mechanical, chemical, and/or structural approaches may also be employed.

The disclosed technology relates to an X-ray conversion target. In one aspect, the X-ray conversion target includes target body and a target part arranged within the target body, the target part having a first face configured to produce X-rays. The X-ray conversion target further comprises a cooling passage having a side wall, at least a part of the side wall being consisted of a portion of the target part.

The present disclosure relates to the production and use of a multi-layer X-ray source target. In certain implementations, layers of X-ray generating material may be interleaved with thermally conductive layers. To prevent delamination of the layers, various mechanical, chemical, and structural approaches are related, including approaches for reducing the internal stress associated with the deposited layers and for increasing binding strength between layers.

An X-ray source target includes a structure configured to generate X-rays when impacted by an electron beam. The structure has an X-ray generating layer comprising X-ray generating material, and a thermally-conductive layer is adjacent to and in thermal communication with the X-ray generating layer. A stress relieving layer is adjacent to the thermally-conductive layer. The thermally-conductive layer is sandwiched between the X-ray generating layer and the stress relieving layer.

An x-ray target, x-ray source, and x-ray system are provided. The x-ray target includes a thermally conductive substrate comprising a surface and at least one structure on or embedded in at least a portion of the surface. The at least one structure includes a thermally conductive first material in thermal communication with the substrate. The first material has a length along a first direction parallel to the portion of the surface in a range greater than 1 millimeter and a width along a second direction parallel to the portion of the surface and perpendicular to the first direction. The width is in a range of 0.2 millimeter to 3 millimeters. The at least one structure further includes at least one layer over the first material. The at least one layer includes at least one second material different from the first material. The at least one layer has a thickness in a range of 2 microns to 50 microns. The at least one second material is configured to generate x-rays upon irradiation by electrons having energies in an energy range of 0.5 keV to 160 keV.

An x-ray anode for generating x-radiation includes a carrier body and a first emission layer and at least one second emission layer, which generate x-radiation when they are impinged by electrons. The emission layers are separated by an intermediate layer on one side of the carrier body and are arranged a distance apart in a central direction of the x-ray anode.