Abstract: An X-ray source and an X-ray apparatus with an X-ray source are provided, the X-ray source includes a liquid metal target which flows through a system of ducts and is conducted through a duct section which has a flow cross-section that is reduced relative to that of the system of ducts. The X-ray source provides a pressure source for acting on the liquid metal target such that the pressure in the liquid metal target at the area of the reduced flow cross-section equals essentially a selectable reference value or remains essentially in a pressure range between selectable limit values of the pressure. A comparatively small thickness of a window can thus be realized in conjunction with a comparatively high flow speed.

Abstract: The invention relates to an X-ray source which is provided with a liquid metal target (3) which flows through a system of ducts (6) and is conducted through a duct section (8) whose flow cross-section is reduced relative to that of the system of ducts. The X-ray source is characterized notably in that there is provided a pressure source (12, 13; 14; 16) for acting on the liquid metal target (3) in such a manner that in the operating condition of the X-ray source the pressure in the liquid metal target (3) at the area of the reduced flow cross-section equals essentially a selectable reference value (Ps) or remains essentially in a pressure range between selectable limit values (Ps1, Ps2) of the pressure. A comparatively small thickness of a window which is transparent to an electron beam can thus be realized in conjunction with a comparatively high flow speed, that is, without having to accept the risk of cavitations. The invention also relates to an X-ray apparatus provided with an X-ray source of this kind.

Abstract: The invention relates to a window transparent to electron rays comprising a foil (1, 10, 300a) transparent to electron rays and separated from a carrier substrate as well as a retaining element (2, 300b) for supporting a peripheral region of the foil transparent to electron rays in the operational state, which retaining element (2, 300b) is made of a material which has a linear thermal expansion coefficient which matches the linear thermal expansion coefficient of the foil material. The invention further relates to a method of manufacturing a window transparent to electron rays and an X-ray device with such a window.

Abstract: The invention relates to a window transparent to electron rays comprising a foil (1, 10, 300a) transparent to electron rays and separated from a carrier substrate as well as a retaining element (2, 300b) for supporting a peripheral region of the foil transparent to electron rays in the operational state, which retaining element (2, 300b) is made of a material which has a linear thermal expansion coefficient which matches the linear thermal expansion coefficient of the foil material.