Disclosed is a high-voltage X-ray tank with a miniaturized shielding structure which includes an X-ray shielding part having a cylindrical structure in which an X-ray tube for radiating X-rays is accommodated and an X-ray radiation port is formed in one side surface thereof, a main block body having a box-shaped structure in which the X-ray shielding part is mounted on one side surface thereof and which is electrically connected to the X-ray shielding part, and a lens part having a structure which is mounted on the one side surface of the X-ray shielding part and focuses X-rays radiated through the X-ray radiation port on a preset position. According to the present invention, the high-voltage X-ray tank, in which insulating and shielding performance is improved and which has an ultra-small and ultra-light-shielding structure based on the improved insulating and shielding performance, can be provided.

According to one embodiment, an X-ray tube includes an envelope including an inner space which is evacuated and is tightly closed and also including an X-ray radiation window, a cathode supporting member provided in the envelope, a cathode secured to the cathode supporting member, emitting electrons, and radiating heat, an anode target provided in the envelope, opposed to the X-ray radiation window, and radiating X-rays due to collision of the electrons emitted from the cathode, and a non-evaporable getter thermally connected to the cathode supporting member on the cathode side and activated by heat due to thermal conduction from the cathode supporting member.

According to one embodiment, an X-ray tube includes an envelope including an inner space which is evacuated and is tightly closed and also including an X-ray radiation window, a cathode supporting member provided in the envelope, a cathode secured to the cathode supporting member, emitting electrons, and radiating heat, an anode target provided in the envelope, opposed to the X-ray radiation window, and radiating X-rays due to collision of the electrons emitted from the cathode, and a non-evaporable getter thermally connected to the cathode supporting member on the cathode side and activated by heat due to thermal conduction from the cathode supporting member.

An object of the invention is to provide an X-ray generator having a simple configuration where heat generated in the irradiation window can be prevented from conducting to a desired portion in accordance with the purpose of use, the method of use or the structure of the X-ray tube. In an X-ray generator for releasing X-rays generated by irradiating a target placed in a vacuumed atmosphere within an X-ray tube with an electron beam from an electron source through an irradiation window of the X-ray tube, the irradiation window has thermal anisotropy where the thermal conductivity is different between the direction in which the irradiation window spreads and the direction of the thickness of the irradiation window, and therefore, the thermal conductivity in the direction in which the heat from the irradiation window is desired not to conduct is made relatively smaller.

Embodiments of the present disclosure provide an X-ray tube. The X-ray tube may include a cathode assembly. The cathode assembly may include: a cathode configured to emit an electron beam; a cathode adjustment window disposed at a periphery of the cathode; and a controller configured to adjust emittance of the electron beams emitted from the cathode at different tube voltages by adjusting a potential difference between the cathode adjustment window and the cathode, so that a size of an electron beam spot formed by the electron beam matches a target focal point size.

Embodiments of the present disclosure provide an X-ray tube. The X-ray tube may include a cathode assembly. The cathode assembly may include: a cathode configured to emit an electron beam; a cathode adjustment window disposed at a periphery of the cathode; and a controller configured to adjust emittance of the electron beams emitted from the cathode at different tube voltages by adjusting a potential difference between the cathode adjustment window and the cathode, so that a size of an electron beam spot formed by the electron beam matches a target focal point size.

A voltage-multiplier can be more compact by arrangement in a stack of separate voltage-multiplier-stages. Each of the voltage-multiplier-stages can include electronic-components on a planar-face of a circuit-board. The planar-face of each circuit-board can be parallel with respect to other circuit-boards in the stack. The electronic-components on each voltage-multiplier-stage can be configured to multiply an input-voltage to provide an output-voltage with a higher voltage than the input-voltage. Each voltage-multiplier-stage in the stack can be electrically coupled to two adjacent voltage-multiplier-stages, except that two outermost voltage-multiplier-stages of the stack can be electrically coupled to only one adjacent voltage-multiplier-stage of the stack.

Disclosed is a high-voltage X-ray tank with a miniaturized shielding structure which includes an X-ray shielding part having a cylindrical structure in which an X-ray tube for radiating X-rays is accommodated and an X-ray radiation port is formed in one side surface thereof, a main block body having a box-shaped structure in which the X-ray shielding part is mounted on one side surface thereof and which is electrically connected to the X-ray shielding part, and a lens part having a structure which is mounted on the one side surface of the X-ray shielding part and focuses X-rays radiated through the X-ray radiation port on a preset position. According to the present invention, the high-voltage X-ray tank, in which insulating and shielding performance is improved and which has an ultra-small and ultra-light-shielding structure based on the improved insulating and shielding performance, can be provided.

Disclosed is a high-voltage X-ray tank with a miniaturized shielding structure which includes an X-ray shielding part having a cylindrical structure in which an X-ray tube for radiating X-rays is accommodated and an X-ray radiation port is formed in one side surface thereof, a main block body having a box-shaped structure in which the X-ray shielding part is mounted on one side surface thereof and which is electrically connected to the X-ray shielding part, and a lens part having a structure which is mounted on the one side surface of the X-ray shielding part and focuses X-rays radiated through the X-ray radiation port on a preset position. According to the present invention, the high-voltage X-ray tank, in which insulating and shielding performance is improved and which has an ultra-small and ultra-light-shielding structure based on the improved insulating and shielding performance, can be provided.

We present a micro-x-ray fluorescence (XRF) system having a high-brightness x-ray illumination system with high x-ray flux and high flux density. The higher brightness is achieved in part by using x-ray target designs that comprise a number of microstructures of x-ray generating materials fabricated in close thermal contact with a substrate having high thermal conductivity. This allows for bombardment of the targets with higher electron density or higher energy electrons, which leads to greater x-ray flux. The high brightness/high flux x-ray source may then be coupled to an x-ray optical system, which can collect and focus the high flux x-rays to spots that can be as small as one micron, leading to high flux density at the fluorescent sample. Such systems may be useful for a variety of applications, including mineralogy, trace element detection, structure and composition analysis, metrology, as well as forensic science and diagnostic systems.