Abstract:
Provided is an X-ray generating tube with improved withstand voltage property by a simple structure, the X-ray generating tube including a cathode connected to one opening of an insulating tube and an anode connected to the other opening, in which a resistive film having a lower sheet resistance value than that of the insulating tube is disposed on an outer periphery of the insulating tube, and the cathode and the anode are electrically connected to each other via the resistive film.
Abstract:
Provided is an X-ray generator including an electron passage in an electron-passage forming member; and a target on an insulative substrate. The transmission X-ray generator irradiates the target with electrons that have passed through the electron passage to generate X-rays. The target is provided at a central region of the substrate; the electron passage accommodates a secondary-X-ray generating section that generates X-rays by irradiation with electrons reflected from the target; the secondary-X-ray generating section and the target are disposed so that both of X-rays generated by direct irradiation of the target with the electrons and X-rays generated by irradiation of the secondary-X-ray generating section with the electrons reflected from the target are radiated to the outside; and at least part of the peripheral region of the substrate has higher transmittance for the X-rays generated at the secondary-X-ray generating section than the central region of the substrate.
Abstract:
An x-ray device utilizes a band of material to exchange charge through tribocharging within a chamber maintained at low fluid pressure. The charge is utilized to generate x-rays within the housing, which may pass through a window of the housing. Various contact rods may be used as part of the tribocharging process.
Abstract:
A radiation transmission type target to be used for a radiation tube has a target metal 12 placed on a substrate 13, and has an antistatic member 14 placed on a surface of the substrate 13 opposite to a surface on which the target metal 12 is placed. The target suppresses its electrostatic charge, and enables the radiation tube to stable operate.
Abstract:
A x-ray tube comprising an anode sealed to a flexible coupling. The flexible coupling can allow the anode to deflect or tilt in various directions to allow an electron beam to impinge upon various selected regions of an anode target.A method of utilizing different regions of an x-ray tube target by tilting or deflecting an x-ray tube anode to cause an electron beam to impinge on a selected region of the target.
Abstract:
The present invention relates in particular to methods and apparatuses for generating and/or providing X-ray radiation with specific radiation characteristics, in particular with a specific radiation dose rate curve (10). In order to provide simple and cost efficient solution, it is provided according to the invention, that the X-ray radiation is generated and/or provided, by composing and/or adapting the X-ray radiation with the specific radiation characteristics, in particular with the specific radiation dose rate curve (10), proportionally from a first specification X-ray radiation with a defined first radiation characteristics, in particular with a predetermined first radiation dose rate curve (11) and a second specification X-ray radiation, which is different from the first specification X-ray radiation, with defined second radiation characteristics, in particular with a predetermined second radiation dose rate curve (12).
Abstract:
An X-ray emitting target including a diamond substrate, a first layer disposed on the diamond substrate and including a first metal, and a second layer disposed on the first layer and including a second metal whose atomic number is 42 or more and which has a thermal conductivity higher than that of the first metal. The layer thickness of the first layer is greater than or equal to 0.1 nm and smaller than or equal to 100 nm. The target is prevented from overheating, so that output variation due to rising temperature is suppressed. Thus it is possible to emit stable and high output X-rays.
Abstract:
An X-ray tube including a target adapted for generating X-rays upon impact of an electron beam on a focal spot, and a further electrode. The further electrode is arranged and adapted for measuring thermo ionic electron emission from the target. The X-ray tube is adapted for providing a signal relating to a temperature of the target based on thermo ionic electron emission measured by the further electrode.
Abstract:
An X-ray generating apparatus for paracentesis of the present invention has an electron emitting portion arranged in an envelope, and a target that emits X-ray by irradiation with electrons that are emitted from the electron emitting portion, and irradiates an affected part in a living body with the X-ray which have been emitted from the target. The apparatus can adjust a region to be irradiated with X-ray, and thereby enables the affected part to be more effectively and efficiently treated with X-ray.The apparatus also includes a front shield which is provided so as to protrude to the outside from the envelope and has an opening that forms a passage of the X-ray which irradiate the affected part, and can adjust a region to be irradiated with X-ray which irradiate the affected part, by the exchange of the front shield.
Abstract:
Disclosed is an X-ray tube that has a simple configuration and is capable of irradiating multiple different X-rays while switching them at a high rate, as well as an X-ray CT device using the X-ray tube. The X-ray tube comprises first and second electron generators, a deflection means, and a target. The deflection means switches the direction in which first and second electron beams are transmitted between first and second directions. The target comprises first, second, third, and fourth surfaces. The first surface receives a first electron beam transmitted toward the first direction and irradiates a first X-ray toward the irradiation field. The second surface receives a second electron beam transmitted toward the first direction and irradiates a second X-ray toward a direction different from the irradiation field. The third surface receives a first electron beam transmitted toward the second direction and irradiates the first X-ray toward a direction different from the predetermined irradiation field. The fourth surface receives a second electron beam transmitted in the second direction and irradiates the second X-ray toward the irradiation field.