Abstract:
Provided is an apparatus for measuring an energy resolving power of X-ray monochromator and a solid sample used for the same. The apparatus comprises an X-ray generator, a monochromator to select a X-ray discharged from the X-ray generator, a main chamber to which the selected X-ray by the monochromator is injected, a solid sample disposed in the main chamber where the selected X-ray is injected for measuring the energy resolving power of the monochromator, and equipments to analyze and handle data obtained from the solid sample while the X-ray is injected to the solid sample. The solid sample is composed of a plurality of atoms, wherein a molecule having at least two atoms exists between the plurality of atoms.
Abstract:
A method and an apparatus for generating X-rays in which continuous X-rays can be generated by irradiating a focused laser in the air using a liquid as a target, thereby generating plasma. A high concentration electrolyte aqueous solution, such as CsCl and RbCl, is circulated by means of a pump (2) and the surface of a jet of high concentration electrolyte aqueous solution injected from a glass nozzle (3) is exposed to an irradiation of focused femtosecond laser pulse (6) via an objective lens (7), thereby generating X-ray pulses.
Abstract:
A method and apparatus for delivering localized x-ray radiation to the interior of a body includes a plurality of x-ray sources disposed in a distal portion of a flexible catheter shaft. The plurality of x-ray sources are secured to a flexible cord disposed longitudinally throughout at least a portion of the shaft. The plurality of x-ray sources are electrically coupled to a control circuit for activating specific ones of the plurality of x-ray sources in order to customize the irradiation of the interior of the body.
Abstract:
The invention relates to an X-ray source that is provided with a liquid metal target and an electron source (3) for the emission of an electron beam (4) through a window (23) of a duct section (51) wherethrough the liquid metal target flows in the operating condition. The X-ray source is notably characterized in that the duct section (51) is formed by a first duct segment (10, 20) that includes the window (23) and wherethrough the liquid metal target flows, and by a second duct segment (30, 40) wherethrough a cooling medium flows and which is connected to the first duct segment in such a manner that the area in which the electron beam acts on the first duct segment is cooled.
Abstract:
A method of manufacturing an X-ray device is described including the step of coupling a housing that includes diamond to an anode structure that includes diamond. Further, a target metal may be formed on a tip of the anode structure. An X-ray device is also described including a housing made of diamond, a cathode within the housing, and an anode structure that includes diamond. The anode structure may include conductive diamond, while the housing structure may include high resistivity diamond.
Abstract:
An x-ray beam emission window for vacuum tubes and Image Intensifiers, In particular for Megalixnull tubes, has a beam-permeable plate and a metallic window frame supporting this plate that can be attached in a wall opening of the vacuum tube. The radiation-permeable plate is a ceramic disc, and the window frame into which the ceramic disc is soldered is formed of a metal adequate for accommodating ceramic expansion.
Abstract:
An x-ray target assembly including a housing having a recess, a cooling fluid contained within the recess and an x-ray target attached to the housing, wherein the x-ray target does not directly contact the cooling fluid.
Abstract:
An X-ray source is disclosed comprising a source of high energy electrons that travel along a longitudinal path. Target material lies along the longitudinal path and X-ray radiation is generated due to impact of the high energy electrons with the target. Shielding material is provided around at least a portion of the target. The shielding material defines a slot extending from the target to an exterior surface of the shielding material, to allow passage of generated radiation. The slot has an axis transverse to the longitudinal path. The axis may be perpendicular longitudinal path. The shielding material may define a plurality of slots having transverse axes. The source of high energy electrons may be a linear accelerator, for example. Scanning systems incorporating such sources are also disclosed. The scanning system comprises a conveying system having a longitudinal axis and the radiation source may be positioned so that the longitudinal path forms an acute angle with respect to the longitudinal axis, to decrease the size of the scanning unit as compared to a unit where the longitudinal axis is perpendicular to the longitudinal path. The longitudinal axis may be parallel to the longitudinal path, to form a more compact scanning system. A plurality of slots may be defined in the shielding material and a corresponding number of conveying systems may be provided to examine a plurality of objects concurrently. Methods of generating radiation and methods of examining objects are also disclosed.
Abstract:
An improved X-ray tube target comprises a refractory metal target substrate and a refractory metal focal track applied to the target substrate by a tape casting process. The X-ray tube target comprises a refractory metal target substrate and a refractory metal focal track formed on the target substrate to form a focal track/target substrate interface plane that varies less than about null0.13 mm.
Abstract:
An x-ray tube target assembly 16 provided. The target assembly 16 includes a target plate element 18 having an impact surface 24, a target rear surface 30, an inner target bore 22, and an outer target circumference 38. The target plate element 18 defines a target plate depth 32 between the impact surface 24 and the target rear surface 30. The target rear surface 30 is formed such that the target plate depth 32 tapers from an increased target plate depth 34 at the inner target bore to a decreased target plate depth 36 at the outer target circumference 38. The target assembly 16 further includes a graphite base element 28 having a base upper surface 42 and a base rear surface 44. The base upper surface 42 is formed to mate with the target rear surface 30.