Abstract:
According to one embodiment, there is provided an X-ray tube target. The X-ray tube target has a structure in which a carbon base material is bonded with an Mo base material or Mo alloy base material with a joint layer. The joint layer includes an MoNbTi diffusion phase, an NbTi alloy phase, an Nb-rich phase and a ZrNb alloy phase when the ratios of components in the joint layer are detected by EPMA.
Abstract:
The invention relates to X-ray analytical instruments (RX), more precisely a device for providing a high energy X-ray beam, typically above 4 keV, for X-ray analysis applications. The device comprises an X-ray tube with a turning anode and an X-ray lens for shaping the beam.
Abstract:
According to one embodiment, there is provided an X-ray tube target. The X-ray tube target has a structure in which a carbon base material is bonded with an Mo base material or Mo alloy base material with a joint layer. The joint layer includes an MoNbTi diffusion phase, an NbTi alloy phase, an Nb-rich phase and a ZrNb alloy phase when the ratios of components in the joint layer are detected by EPMA.
Abstract:
The object of the present invention is a mount for a rotating target, roughly disk-shaped and perforated at its center. The mount is made of a material which a structurally hardened nickel-based superalloy. The mount is disk-shaped with a narrower area at its periphery, and the narrow peripheral area and the thick area surrounding the central orifice are separated by a discontinuous area whose slope is between 3° and 10°, with the thickness ratio between the narrow peripheral area and the thick area surrounding the central orifice being between 1.5 and 3. The superalloy is an Inconel that has undergone a structural hardening treatment after machining. At least one of the mount's surfaces is coated with an emissive coating used to discharge heat through thermal radiation.
Abstract:
A computed tomography apparatus (10) includes spaced radiation sources (82, 84), such as anodes, which each propagate a cone-beam of radiation (40, 50) into an examination region (14). A detector (22) detects radiation which has passed through the examination region. An attenuation system (55) interposed between the radiation sources and the examination region for cone-angle dependent filtering of the cone beams. The attenuation system allows rays which contribute little to a reconstructed image to be attenuated more than rays which contribute more.
Abstract:
An energy beam is irradiated onto a rotating anticathode so as to heat a portion irradiated by the energy beam under the condition that a vapor pressure at equilibrium state of the portion is set to 0.1 Torr or more, thereby generating an X-ray. The portion irradiated by the energy beam is kept at the rotating anticathode by a centrifugal force to the portion it a direction outward from a surface of the portion.
Abstract:
For x-ray tubes the focal spot temperature is a critical factor. According to an exemplary embodiment of the present invention, an examination apparatus is provided which has a synchronisation unit providing an operation mode for a stereo tube in which the anode rotation frequency is synchronised with the switching frequency such that the switching frequency is a half integer multiple of the anode rotation frequency. This may lead to a significant reduction of the focal spot temperature.
Abstract:
An X-ray tube target assembly and method of manufacturing same is provided. The X-ray tube target assembly comprises an injection molded target disk. The injection molded target disk includes an injection molded hub member and an injection molded outer member. The injection molded outer member comprises a plurality of injection molded outer member segments that are removably attached together and removably attached to the hub member to form the injection molded target disk. A target track is formed on an outer surface on one side of an outer periphery of the injection molded outer member.
Abstract:
An X-ray imaging system is provided which includes an X-ray tube including, a cathode for emitting electrons; and a dynamic anode. The dynamic anode receives the electrons from the cathode and generates an X-ray beam that is non-stationary. The dynamic anode rotates between a first position where the X-ray beam is directed at a first location on an object and a second position where the X-ray beam is directed at a second location on the object to generate the non-stationary beam.
Abstract:
An x-ray tube having a removable aperture structure that can be detached from a portion of the x-ray tube without damaging either component is disclosed. The aperture structure includes heat conducting surfaces in communication with a coolant supplied to the fluid reservoir. The removable aperture structure includes a bond surface configured to receive a removable bond with the x-ray tube evacuated enclosure.