Abstract:
Disclosed are a cartridge-type X-ray source apparatus and an X-ray emission apparatus using the same. The X-ray source includes: a cathode electrode provided with an electron emission source by using a nanostructure; an anode electrode having a target emitting X-rays by electron collision; and a housing forming an external appearance, and exposing a cathode electrode terminal connected to the cathode electrode and an anode electrode terminal connected to the anode electrode to an outside thereof, wherein the cathode electrode terminal and the anode electrode terminal differ from each other in at least one of exposure direction, height, size, and shape.
Abstract:
A transmission type X-ray tube includes an electrode lead (4) holding a cathode filament (7) and a stem unit (1) to which a sealing member (5), an exhaust tube (2), and the like are attached by brazing, and an irradiation window frame (8) having an X-ray irradiation window (9) attached by brazing. The other end side (52) of the sealing member (5) is attached to an open end (83) of the irradiation window frame (8) by welding. Thus, it is possible to obtain a high-quality transmission type X-ray tube having a long service life at a low cost.
Abstract:
This invention aims to provide a through terminal capable of maintaining air-tightness stably and an X-ray tube having the through terminal. The through terminal includes a tubular member, a plate member formed of an insulating ceramic material and bonded to an inner periphery of the tubular member in a hermetically sealed state, and pins extending through the plate member so that the portions thereof fitted through the plate member are located inside metallic tubes respectively and bonded to the plate member in a hermetically sealed state through the tubes. The tubular member is provided on an inner periphery thereof with a stepped portion for abutment thereagainst of a plate face of the plate member. The tubular member is formed of an alloy including at least iron, nickel, and cobalt.
Abstract:
Disclosed is a radiation logging tool, comprising a tool housing; a compact generator that produces radiation; a power supply coupled to the compact generator; and control circuitry. Embodiments of the compact generator comprise a generator vacuum tube comprising a source generating charged particles, and a target onto which the charged particles are directed; and a high voltage supply comprising a high voltage multiplier ladder located laterally adjacent to the generator vacuum tube. The high voltage supply applies a high voltage between the source and the target to accelerate the charged particles to a predetermined energy level. The compact generator also includes an electrical coupling between an output of the high voltage supply and the target of the generator vacuum tube to accommodate the collocated positions of the generator vacuum tube and the high voltage power supply.
Abstract:
A transmission type X-ray tube includes an electrode lead (4) holding a cathode filament (7) and a stem unit (1) to which a sealing member (5), an exhaust tube (2), and the like are attached by brazing, and an irradiation widow frame (8) having an X-ray irradiation window (9) attached by brazing.The other end side (52) of the sealing member (5) is attached to an open end (83) of the irradiation window frame (8) by welding.Thus, it is possible to obtain a high-quality transmission type X-ray tube having a long service life at a low cost.
Abstract:
An anode (16), (16') and a cathode (14), (14') are mounted in an evacuated envelope (12), (12') of an x-ray tube (10). One of the anode and cathode is rotatably mounted on bearings (20), (20') relative to the evacuated envelope. In the embodiment in which the anode is rotatably mounted relative to the evacuated housing, a rolling ring assembly (40) provides a current path from the anode through the evacuated housing to ground without the current path passing through the bearing (20). In this manner, pitting and other damage to the bearing due to arcing is eliminated. In the embodiment in which the cathode is rotatably mounted relative to the evacuated envelope, the anode and envelope rotate as the cathode is held stationary (58, 60). A plurality of rolling ring assemblies (40'.sub.1, 40'.sub.2, . . . ) provide electrical communication between electrical control circuitry disposed outside the rotating housing and the cathode assembly (14'). The electrical communication includes providing current to filaments of cathodes (30'.sub.1, 30'.sub.2) of the cathode assembly.
Abstract:
A multitube X-ray emitter housing according to the invention includes a housing, a high-voltage supply and a cooling device with an electrically insulating cooling medium. The high-voltage supply has a plurality of high-voltage contacts connected in parallel on a single high-voltage supply lead. A first of at least one side surface of the housing has a first electrically conductive housing portion with a temperature-dependent electrical conductivity. The multitube X-ray emitter housing further includes: a control unit having an interface to receive a measured value representing the electrical conductivity of the first electrically conductive housing portion and to compare the measured value with a threshold value; and a switching device to switch off the high voltage based on the comparison.
Abstract:
A housing for a high voltage tank has a boiler which is open on one side and a circuit board cover which closes the boiler. At least one strain gauge is arranged on or in the circuit board cover such that it is expanded or compressed with a pressure-induced deformation of the circuit board cover. A housing of this type is particularly suited as a high voltage tank for an x-ray emitter. An impermissible pressure in the housing for a high voltage tank can be determined easily and reliably.
Abstract:
A transmission type X-ray tube includes an electrode lead holding a cathode filament and a stem unit to which a sealing member, an exhaust tube, and the like are attached by brazing, and an irradiation window frame having an X-ray irradiation window attached by brazing. The other end side of the sealing member is attached to an open end of the irradiation window frame by welding. Thus, it is possible to obtain a high-quality transmission type X-ray tube having a long service life at a low cost.
Abstract:
A housing comprising a liquid-tight electric bushing is provided. The housing comprises an opening and a printed circuit board comprising at least first and second layers. The first layer is a top side of the printed circuit board and spans the opening. A first contact element is disposed on the top side and in a blind bore through the first layer that extends to the second layer. The second layer is a conductor track in the interior of the printed circuit board.