摘要:
A phosphor powder layer is formed by a process comprising a step of mixing a phosphor powder with a polymer emulsion and drying the mixture to give the phosphor powder coated with the polymer and a step of subjecting the phosphor powder coated with the polymer to heating and pressing. The resulting powder layer is suitable as a scintillator used in a radiation detector, particularly in a radiation detector used in X-ray CT.
摘要:
In a radiation detector having a radiation-stimulated light emitting scintillator and a photodetector for receiving the light emission from the scintillator, the scintillator is formed of a layer of phosphor particles and a light scattering layer is provided in an optical path between the phosphor particle layer and the photodetector. Light generated in the surface of the scintillator is scattered and absorbed by the light scattering layer in some degree so that the reduced quantity of light incident upon the photodetector lowers the output of the photodetector. This effect is balanced with the lowering of the photodetector output due to the absorption and scattering of light generated at the inner parts of the scintillator and further removes anisotropic light emission. As a result, signal-to-noise ratio is greatly improved.A shielding layer between the scintillator and photodetector prevents secondary radiation such as scattered and fluorescent radiation from reaching the photodetector. The shielding layer can also serve as the scattering layer.
摘要:
A radiation detector comprising a scintillator exhibiting luminescence by the action of radioactive rays and a light detector detecting light output of said scintillator, characterized in that said scintillator is a phosphor represented by the formula:(A.sub.1-x-y Ln.sub.x Ce.sub.y).sub.2 O.sub.2 S:Xwherein A is at least one element selected from the group consisting of Y, La and Gd; Ln is at least one element selected from the group consisting of Pr, Tb and Eu; and X is at least one element selected from the group consisting of F, Cl and Br; and the values of x and y are 0.000003.gtoreq.x.gtoreq.0.2, and 0.000001.gtoreq.y.gtoreq.0.005, and the amount of X is 0 to 1000 ppm on weight basis, has a very short after glow time because of having Ce in the phosphor.
摘要:
A multielement scintillation radiation detector comprises a scintillator and a photosensitive detector, wherein to optically isolate between the adjacent radiation detectors, a thin light reflecting sheet on which a sponge material is attached is used to closely adhere to radiation shielding plates for partitioning each radiation detector.
摘要:
In a formation method of a copper damascene multilayer wiring in a semiconductor integrated circuit device, after performing an oxidation process on a surface of copper, a heating process of 300° C. to 400° C. is performed in a reducing gas atmosphere, or a plasma annealing process is performed in a reducing gas plasma atmosphere.
摘要:
A field-effect transistor or a bipolar transistor may be provided in which the contact resistance between a channel layer or base layer and a contact layer are reduced. For example, an InGaAs buffer layer may be formed on the substrate side of an InGaAs channel layer of a field-effect transistor and by the bypassing effect that carriers pass through this InGaAs buffer layer, the InGaAs channel layer comes in contact with the contact layer with a low resistance. The contact resistance between the InGaAs channel layer and the contact layer can be reduced to 10 ohm per a width of 10.mu.m, and as a result, the value of transconductance factor K of a field-effect transistor can be increased in 14 mA/V.sup.2 per a width of 10.mu.m.
摘要:
An image processing apparatus determines categories for classifying image data based on shooting information of the image data, generates an update information file for each category, and uploads the update information file along with the image data to an image managing server. A client terminal registers, in advance, the address of a desired update information file, and periodically checks the update information file in the image managing server. If the update information file indicates that new image data has been added to the image managing server, the image data is downloaded in accordance with the file path described in the update information file.
摘要:
An image processing apparatus for applying image processing to image data by adjusting values of a plurality of adjustment items, comprises an acquisition unit configured to acquire a characteristic of the image data by analyzing the image data, a decision unit configured to decide an order of settings of the values of the plurality of adjustment items based on the acquired characteristic of the image data, and a display unit configured to display value setting fields used to set the values of the adjustment items on a screen in accordance with the decided order.
摘要:
An image processing apparatus determines categories for classifying image data based on shooting information of the image data, generates an update information file for each category, and uploads the update information file along with the image data to an image managing server. A client terminal registers, in advance, the address of a desired update information file, and periodically checks the update information file in the image managing server. If the update information file indicates that new image data has been added to the image managing server, the image data is downloaded in accordance with the file path described in the update information file.
摘要:
An image processing apparatus determines categories for classifying image data based on shooting information of the image data, generates an update information file for each category, and uploads the update information file along with the image data to an image managing server. A client terminal registers, in advance, the address of a desired update information file, and periodically checks the update information file in the image managing server. If the update information file indicates that new image data has been added to the image managing server, the image data is downloaded in accordance with the file path described in the update information file.