125results about "Conversion screens" patented technology

The present invention discloses a method for preparing an X-ray fluorescent screen and the X-ray fluorescent screen thereof. The preparation method comprises the following steps: S1, pretreatment: cleaning and drying a microchannel structure; the microchannel structure is provided with a plurality of through microchannels, and the microchannel structure is made of glass; S2, microchannel coating: coating the sidewalls of the microchannels with a reflective film; S3, preparing a suspension: mixing fluorescent material particles, a carrier solvent, and a surfactant, and dispersing them to prepare a suspension; S4, filling the microchannels; S5, repeating the filling; S6, post-treatment: cleaning the surface of the microchannel structure and encapsulating it; the X-ray fluorescent screen is prepared using the above preparation method; the X-ray fluorescent screen comprises a microchannel structure, the microchannel structure is provided with a plurality of through microchannels arranged in an array, and the microchannels are filled with fluorescent material particles. The present invention fills the glass microchannel structure with fluorescent material particles to improve the resolution and fluorescence transmission efficiency of the X-ray fluorescent screen.

X-ray scintillators based on amorphous organic metal halide hybrid films are demonstrated, which can be prepared via a facile solution processing with a non-crystalline organic halide salt reacting with metal halide at low temperature. The solution processed scintillators exhibit excellent scintillation properties, thermal stability, mechanical resilience, and processability.

A multi-component rare-earth garnet optical material containing at least three different rare-earth elements and optionally activator ions is described. The optical material includes a rare-earth garnet scintillator. A method for preparing powders, ceramics, and single crystals of the optical material is also described. Further, a radiation detector including a rare-earth garnet scintillator is described.

The present invention provides: a scintillator which is reduced in the intensity of the afterglow, while having increased luminous intensity; and a charged particle radiation apparatus. A scintillator according to the present invention is characterized in that: a base material, a buffer layer, a light emitting part and a first conductive layer are sequentially stacked in this order; the light emitting part contains one or more elements that are selected from the group consisting of Ga, Zn, In, Al, Cd, Mg, Ca and Sr; and a second conductive layer is provided between the base material and the light emitting part.

A ceramic scintillator array 1 according to an embodiment of the present invention is provided with a plurality of scintillator segments 2 and a reflective layer. The reflective layer contains a resin composition. The resin composition contains a transparent resin and an additive. Dibasic acid esters serve as the additive.

Provided is a scintillator panel including a substrate, grid-like barrier ribs formed on the substrate, and a phosphor layer in a cell separated by the barrier ribs, in which the barrier rib includes on its surface in the following order a metallic reflective layer, and an inorganic protective layer mainly containing a nitride.

The invention relates to organic scintillators with improved characteristics in terms of transparency and response speed. More specifically, the scintillators of the invention use the chemical compounds of formula (M), also called fluorophores: (M) wherein: X and Y, independently of each other, are: H, aryl, naphthyl, biphenyl, tolyl, preferably 2-naphthyl, 1-naphthyl, 2-biphenyl, 4-tolyl; with the proviso that X and Y are never H at the same time; R1 and R2, independently of each other, are: aryl, arylalkyl, alkyl (also alkylene), with linear branched or cyclic chain C2-C12, preferably at least one of R1 and R2, or both, is C8H17.

A radiation detector includes: a sensor panel; a scintillator panel; and a resin frame provided across the sensor panel and the scintillator panel, in which the sensor panel has a mounting surface where the scintillator panel is mounted, the scintillator panel includes a support body having a first surface, a second surface on a side opposite to the first surface, and a first side surface connecting the first surface and the second surface to each other, and a scintillator layer formed on the first surface and containing a plurality of columnar crystals, the scintillator panel is mounted on the mounting surface such that the scintillator layer and the first surface face the mounting surface, and the scintillator layer has a second side surface extending so as to be positioned on the same plane as the first side surface.

This scintillator unit comprises: a support; a scintillator layer disposed on the support and including a plurality of columnar crystals; an optical functional layer disposed on an effective portion of the scintillator layer; and a moisture-proof layer integrally covering both the scintillator layer and the optical functional layer. The moisture-proof layer is in contact with the plurality of columnar crystals at an outer edge of the scintillator layer and enters gaps of the plurality of columnar crystals.

A ceramic scintillator according to an embodiment of the present invention is provided with a sintered body of a gadolinium oxysulfide phosphor containing praseodymium as a main activator. When the body color of the sintered body is represented by chromaticity coordinates (x, y) based on a CIE1931 chromaticity value, the sintered body has a body color satisfying the following formulae (1) and (2). A ceramic scintillator according to an embodiment is obtained by a method for producing a ceramic scintillator, the method comprising a heat treatment step for reacting a reactant gas containing oxygen and sulfur with the sintered body. The heat treatment time in the heat treatment step is from 1 hour to 50 hours (inclusive). 0.4 < = x < = 0.505 (1) 0.83 x + 0.075 < = y < = 0.83 x + 0.095 (2).

This scintillator panel comprises: a support layer; a scintillator layer disposed on the support layer and including a plurality of columnar crystals; an adhesive layer disposed on the scintillator layer; a release layer disposed on the adhesive layer and having releasability from the adhesive layer; and a first moisture-proof layer integrally covering an outer edge portion of the scintillator layer, an outer edge portion of the adhesive layer, and an outer edge portion of the release layer. Through use of this scintillator panel, the scintillator layer can be attached to another member when the scintillator panel is used, and the moisture-proof properties of the scintillator layer can be sufficiently secured when the scintillator panel is not in use.

Systems, methods, apparatus, and computer program products are provided for the detection of X-ray electromagnetic radiation using a scintillator. [Solution] In one exemplary embodiment, at least one X-ray device may have an X-ray source configured to emit an X-ray cone, a scintillator, a detector, and at least one shroud positioned to block stray light from reaching the detector.

A decrease and variations in dimensional accuracy due to deformation is suppressed.The scintillator array according to an embodiment includes a plurality of scintillator segments each including a sintered body of a rare earth oxysulfide phosphor, a first reflective layer interposed between adjacent scintillator segments so as to integrate the scintillator segments, and a second reflective layer located on a surface side of the scintillator segments on which X-rays are incident. The amount of deformation of the corners of the second reflective layer is 20 μm or smaller.

A Purcell enhanced metamaterial scintillator structure comprises a conducting structure and a dielectric structure disposed adjacent to the conducting structure. The dielectric structure comprises a structure of scintillating nanoparticles.

To provide a garnet-structured aluminate scintillating material doped with a transition metal element having an ionic radius and electronegativity similar to Al3+, and an outer electron configuration of [Ar]3dn4s1-2 (n≥5), as well as a preparation method and application thereof.SOLUTION: The chemical formula of the transition metal element doped garnet-structured aluminate scintillating material is RE3-x-aCexAaAl5-y-zDyMzO12, wherein x is 0<x≤0.15, y is 0≤y≤3, z is 0<z≤0.1, and a is 0≤a≤0.1; the rare earth element RE is at least one selected from Gd, Lu, Y, Sc, La, Nd, Eu, Tb, Dy, Ho, Er, Tm, and Yb, the A is at least one selected from Li, Mg, Ca, K, and Na, the D is at least one selected from Ga and In, and the M is a transition metal element, which is at least one selected from Cr, Mn, Fe, Co, and Ni.SELECTED DRAWING: Figure 1

This enables higher resolution and higher sensitivity in X-ray line sensors. [Solution] A scintillator array 1 is composed of a plurality of scintillator pixels 2 that convert X-rays into light, wherein the plurality of scintillator pixels 2 are arranged in a straight line by partition walls 3 at equal intervals, and the widths of the first side walls 4 and the second side walls 5 at both ends are different, and when two scintillator arrays 1 are placed on top of each other in opposite directions, the scintillator pixels 2 of one scintillator array 1 and the scintillator pixels 2 of the other scintillator array 1 are offset by half a pixel.

Embodiments of the present application disclose a single-atom manipulation system, a control method and an electronic device. The single-atom manipulation system comprises: an atomic cooling device configured to form an MOT atomic group, wherein the MOT atomic group is capable of generating atomic fluorescence of a first target wavelength; an atomic trapping device, wherein the atomic trapping device comprises a laser source and a strong focusing lens, the laser source emits a target laser beam of a second target wavelength, the target laser beam passes through the strong focusing lens to form an optical tweezer array to trap the MOT atomic group; and an imaging device, wherein the imaging device is sequentially provided with a filter, a noise fluorescence shielding device, a plano-convex lens and an imaging unit in a reflection direction of the focused atomic fluorescence, and the noise fluorescence shielding device is configured to shield noise fluorescence generated by the atomic cooling device.

The present invention provides a defect-controlled lutetium silicate crystal and a method for producing the same. A lutetium silicate crystal according to an embodiment of the present invention is characterized by containing at least lutetium (Lu), silicon (Si), oxygen (O), and hydrogen (H), having the same crystal structure as a crystal represented by Lu2SiO5, and having an absorption peak derived from an OH group in a wave number range of 3000 cm-1 or more and 3800 cm-1 or less in an infrared absorption spectrum.

A scintillator panel comprises a substrate, lattice-shaped partitions formed on the substrate, a phosphor layer within cells partitioned by the partitions, and a reflective layer surrounding the side surfaces and bottom of the phosphor layer. The scintillator panel comprises a curved portion of the reflective layer surrounding the side surfaces of the phosphor layer, and portions of the reflective layer on the side surfaces of the phosphor layer having opposing surfaces that are substantially parallel to each other. The ratio of the curved portion to the flat portion of the reflective layer on the bottom of the phosphor layer in the width direction is 10.0:0 to 1.0:9.0. The scintillator panel improves brightness.

A scintillator unit that can reduce crosstalk when the scintillator unit includes a plurality of scintillators and a radiation detector are provided. More specifically, a scintillator unit includes a reflective layer between a plurality of scintillators and the plurality of scintillators, wherein an adhesive layer and a low-refractive-index layer with a lower refractive index than the adhesive layer are located in this order on the scintillators between the scintillators and the reflective layer.

The present application relates to an ultra-high concentration cerium ion-activated Gd2O3-rich borosilicate scintillating glass. The glass is prepared from the following raw materials through thorough mixing, high-temperature melting, mold casting, and precision annealing, including the following: 10-35 mol% B2O3, 10-35 mol% SiO2, 0-70 mol% Gd2O3, and 0-20 mol% CeO2; the sum of these components is 100 mol%. The present application also relates to a preparation method and application of the ultra-high concentration cerium ion-activated Gd2O3-rich borosilicate scintillating glass. The scintillating glass of the present application can achieve an ultra-high concentration of 5-15 mol% doping of CeO2, the luminescent center, in the Gd2O3-rich borosilicate scintillating glass. While ensuring high density, it can also achieve a high light yield of 1300 ph / MeV and a scintillation decay time of approximately 100 ns. On the other hand, due to the inherent transparency of glass, simple preparation process, easy adjustment of components, and the ability to achieve low cost and large volume, it has important application value in nuclear radiation detection, high-energy physics experiments, X-ray medical imaging, neutron detection, industrial online detection, and national security monitoring.

The present invention improves the reliability of a scintillator structure. This scintillator structure comprises multiple cells and a reflective layer covering the multiple cells. The reflective layer comprises a resin and reflective particles. The resin is a polyolefin without double bonds.

Scintillator compositions comprising lithium, an alkaline earth metal, a halide, and optionally a dopant, and related systems and methods for detecting radiation are disclosed.

Provided is a scintillator panel with reduced deterioration in brightness due to irradiation and higher brightness. A scintillator panel including a substrate and a scintillator layer containing phosphors, in which the scintillator layer includes a binder resin having a π-conjugated structure composed of seven or more atoms; in which the glass transition temperature of the binder resin is from 30 to 430°C; and the thickness of the scintillator layer is from 50 to 800 µm.

A ceramic scintillator of an embodiment includes a sintered body of a gadolinium oxysulfide phosphor containing praseodymium as a main activator. When a body color of the sintered body is represented by chromaticity coordinates (x, y) based on a CIE1931 chromaticity value, the sintered body has a body color satisfying 0.4≤x≤0.505 . . . (1) and 0.83x+0.075≤y≤0.83x+0.095 . . . (2). The ceramic scintillator of the embodiment is obtained by a method for manufacturing a ceramic scintillator, the method including a heat treatment step of causing a reaction gas containing oxygen and sulfur to react with the sintered body. A heat treatment time in the heat treatment step is 1 hour or more and 50 hours or less.

A scintillator panel of the present application includes: a first flexible support having a first surface and a second surface opposite to the first surface; a scintillator layer formed on the first surface and including a plurality of columnar crystals; a second flexible support provided on the second surface; an inorganic layer provided on the second flexible support in a manner interposed between the second surface and the second flexible support; and a first adhesive layer bonding the second surface and the inorganic layer to each other. A radiation detector of the present application includes: a scintillator panel; and a sensor panel including a photoelectric conversion element, the scintillator panel being provided on the sensor panel in a manner that the first surface is on the side of the sensor panel relative to the second surface.

The invention relates to a method for producing a supported scintillator for particle radiation, and to a supported scintillator. The supported scintillator comprises, as a substrate, a plastics film and a layer of scintillator powder which is adhesively bonded to the substrate. In the method according to the invention, the scintillator powder is applied in excess to an adhesive layer on the plastics film while the plastics film is caused to vibrate with vibrations at ultrasonic frequency. The scintillator powder is then pressed on, after which non-adhering scintillator powder is removed. The supported scintillator has a transmission of τ ≥ 0.99.

A radiation detector includes a sensor panel having a light-receiving surface, a first scintillator panel and a second scintillator panel configured on the light-receiving surface in a state of being adjacent to each other along the light-receiving surface, and a moisture-proof layer. The first scintillator panel has a first substrate and a first scintillator layer including a plurality of columnar crystals. The second scintillator panel has a second substrate and a second scintillator layer including a plurality of columnar crystals. The first scintillator layer reaches at least a first portion of the first substrate. The second scintillator layer reaches at least a second portion of the second substrate. The moisture-proof layer is continuously provided across the first scintillator panel and the second scintillator panel.

This scintillator comprises: a support substrate; and a light-emitting layer that is formed from ZnO, is disposed on the support substrate, and emits light in response to the incidence of charged particles or photons. The light-emitting layer has a plurality of first layers having a first impurity concentration, and a plurality of second layers alternately laminated with the plurality of first layers and having a second impurity concentration lower than the first impurity concentration.