Abstract: The present invention relates to an X-ray source for the generation of fluorescent X-rays. The X-ray source is realized by an electron source for the emission of electrons and a target which emits X-rays in response to the incidence of the electrons, the target comprising a ring-shaped primary target for the emission of primary X-rays in response to the incidence of the electrons and a secondary target for the emission of fluorescent X-rays in response to the incidence of the primary X-rays. To obtain an enhanced radiance, it is proposed that the primary target comprises a liquid metal channel arranged in a radial direction relative to a central axis, and that a liquid metal circulates in the liquid metal channel during operation of the X-ray source in the radial direction from an inner side to an outer side of the ring-shaped primary target.

Abstract: The invention relates to a device for generating X-rays (18) comprising an electron source (3) for emitting electrons accommodated in a vacuum space (2), a liquid metal circuit including a liquid metal for emitting X-rays as a result of the incidence of electrons and a pumping means (11) for causing a flow of the liquid metal through a constriction (7) where the electrons emitted by the electron source (3) impinge upon the liquid metal, and a radiation window (12) bounding said constriction (7), which is transparent to electrons and X-rays and separates the constriction (7) from the vacuum space (2).

Abstract: The invention relates to a device for generating X-rays (18) comprising an electron source (3) for emitting electrons accommodated in a vacuum space (2), a liquid metal circuit including a liquid metal for emitting X-rays as a result of the incidence of electrons and a pumping means (11) for causing a flow of the liquid metal through a constriction (7) where the electrons emitted by the electron source (3) impinge upon the liquid metal, and a radiation window (12) bounding said constriction (7), which is transparent to electrons and X-rays and separates the constriction (7) from the vacuum space (2).

Abstract: The present invention relates to a method of manufacturing a window transparent for electrons of an electron beam (E), in particular of an X-ray source.

Abstract: The present invention relates to an X-ray source for the generation of fluorescent X-rays comprising an electron source (1) for the emission of electrons (6) and a target which emits X-rays (10) in response to the incidence of the electrons (6), said target comprising a ring-shaped primary target (2) for the emission of primary X-rays (9) in response to the incidence of the electrons (6) and a secondary target (3) for the emission of fluorescent X-rays (10) in response to the incidence of the primary X-rays (9). To obtain an enhanced radiance, it is proposed that the primary target (2) comprises a liquid metal channel (8) arranged in radial direction relative to a central axis (4), and that a liquid metal circulates in the liquid metal channel (8) during operation of the X-ray source in radial direction from an inner side (13) to an outer side (14) of said ring-shaped primary target (2).

Abstract: A miniaturized SQUID module (10), notably for multi-channel magnetometers, for measurement of varying magnetic fields in a field strength range below 10.sup.-10 T, includes superconducting and shielded connections between a SQUID chip (19) and a gradiometer (12). The module can be mounted in the lower part of a cryostat and enables a large number of measurement points per unit of surface area. The SQUID chip (19) is arranged on a fully shielded supporting plate (18) which has a width of only a few millimeters and which is provided with electronic circuitry (23), the SQUID chip (19) being connected in a superconducting manner, at least by soldering, to the wires (11) of the gradiometer (12) via a superconducting, solderable and bondable intermediate support (27).