14results about "Glass dosimeters" patented technology

The present application relates to the technical field of radiation dose, and specifically discloses a preparation method and application of silver-doped silicon phosphate glass sheet, aiming at solving the problems of easy cracking, easy hydrolysis of glass and unstable radiation photoluminescence performance in the prior art, the method comprising: mixing component raw materials, degassing, high-temperature melting, pouring the molten glass liquid into a preheated graphite crucible for shaping, and then performing constant-temperature annealing, polishing, polishing and cutting to obtain an X-ray radiation dosimeter. The present application effectively adjusts the material microstructure and the formation process of the radiation photoluminescence center by adding precisely regulated phosphate glass components and optimizing the annealing process, and prepares an X-ray radiation dosimeter with stable structure, good thermal stability and low hydrolysis resistance. The medium performs excellently in radiation photoluminescence intensity, signal retention capacity, response stability and chemical stability, and can be widely applied in the fields of X-ray imaging, medical diagnosis, non-destructive detection and precise structure analysis.

The invention relates to a dosimeter (100) comprising a light source (1) capable of generating a light beam (10), an optical coupler-splitter (2), a radiosensitive optical fiber (3), a first photodetector (5) arranged to record a power measurement (21) of the light beam transmitted through the radiosensitive optical fiber (3), a reference optical arm (4), a second photodetector (6) arranged to record a reference power measurement (22) of the light beam transmitted through the reference optical arm (4), and an electronic system (20) configured to extract a differential measurement of radiation-induced attenuation in the radiosensitive optical fiber (3) with respect to the reference optical arm (4). According to the invention, the light beam (10) is unpolarized or depolarized, or, respectively, the light beam (10) is polarized and the radiosensitive optical fiber (3) is a polarization-maintaining fiber.

The invention relates to an ionizing radiation detector, the detector comprising a scintillator, a monomer, and a catalyst in which: - the scintillator emits non-ionizing radiation following the absorption of ionizing radiation, - the catalyst catalyzes the polymerization of the monomer following the absorption of the non-ionizing radiation emitted by the scintillator, - the polymer resulting from the polymerization of the monomer has a different color from the monomer. Figure for the abstract: Figure 1

Systems and methods for relative optimized linearization (ROL) for radiochromic film (RCF) dosimetry may eliminate the need for dose-response curve measurements while incorporating non-uniformity corrections. The ROL method may include, for each of multiple color channels, determining linearization parameters that minimize a cost function that evaluates an error between expected and calculated doses. The ROL method may use the linearization parameters to generate a variation map including dose-independent variation values and use the variation map to determine a corrected net optical density of the RCF. The ROL method may use the linearization parameters and the corrected net optical density to produce a dose image including corrected doses.

This present disclosure provides a multilayer dosimetry system, comprising: (a) a mounting layer, wherein the mounting layer is an optically clear polymer film having two sides coated with an optically clear first adhesive; (b) at least two active layers, wherein the mounting layer is sandwiched between active layers by affixing to the optically clear first adhesive; and (c) (i) an optically clear top base layer affixed to upper side of the sandwiched structure of (b), and (ii) a bottom base layer affixed to bottom side of the sandwiched structure of (b). The present disclosure also provides a point dose measurement device comprising a multilayer dosimetry system. The present disclosure further provides an integrated system to measure point dose radiation and a process for measuring point dose radiation.

To provide a dosimetry device for quantifying the dosage of radiation emitted from a radiation source.SOLUTION: A dosimetry device for quantifying the dosage of radiation provided herein comprises (i) a radiation dose indicator, (ii) optical means for capturing color changes, and (iii) software means for comparing optical density of the dose indicator to a predetermined calibration curve, and is configured to quantify the dosage of radiation emitted from the radiation source.SELECTED DRAWING: Figure 1

Provided herein is a dosimetry device for quantifying the dosage of radiation emitted from a radiation source, the device comprising: (i) a radiation dose indicator; (ii) an optical means to capture the color change; and (iii) a software means to compare the optical density of the dose indicator as compared to a predetermined calibration curve. Also provided herein is a method of quantifying the dosage of radiation emitted from the radiation source. Further provided herein is use of said dosimetry device in various medical, food and industrial applications.

This present disclosure provides a multilayer dosimetry system, comprising: (a) a mounting layer, wherein the mounting layer is an optically clear polymer film having two sides coated with an optically clear first adhesive; (b) at least two active layers, wherein the mounting layer is sandwiched between active layers by affixing to the optically clear first adhesive; and (c) (i) an optically clear top base layer affixed to upper side of the sandwiched structure of (b), and (ii) a bottom base layer affixed to bottom side of the sandwiched structure of (b). The present disclosure also provides a point dose measurement device comprising a multilayer dosimetry system. The present disclosure further provides an integrated system to measure point dose radiation and a process for measuring point dose radiation.

The invention relates to a luminescent phosphate fluorescent glass ceramic capable of rapidly responding to radiation dose detection and a preparation method and application thereof.The luminescent phosphate fluorescent glass ceramic is prepared from Na2CO3, BaCO3, NH4H2PO4 and H3BO3 through mixed grinding, calcination, melting quenching, grinding, compression molding, heat treatment and cooling, Dy < 3 + > is doped in a glass ceramic matrix in the form of a compound, and the Dy < 3 + > ion doped NaBaPO4 glass ceramic is obtained. Cold white light is emitted under the excitation of a specific excitation wavelength, through experiments and calculation, the sample contains three shallow trap energy levels with different depths, the characteristic endows the sample with remarkable rapid response performance, and charge carriers can be rapidly released in the optical excitation reading process, so that shorter signal reading time and rapid bleaching capability are realized, and the sensitivity of the sample is improved. And good linear dose response to high-energy rays in a range of 0.1-200 Gy is realized. The fluorescent material has good white light luminescence characteristic, rapid response characteristic, wide radiation dose response performance and good reusability, and can be applied to the field of luminescence and radiation dose detection as a novel fluorescent material.

This relates to a dosimeter including a light source capable of generating a light beam, an optical coupler-splitter, a radio-sensitive optical fiber, a first photodetector arranged to record a power measurement of the light beam transmitted through the radio-sensitive optical fiber, a reference optical arm, a second photodetector arranged to record a reference power measurement of the light beam transmitted through the reference optical arm, and an electronic system configured to extract a differential radiation induced attenuation measurement in the radio-sensitive optical fiber with respect to the reference optical arm. The light beam is non-polarized or depolarized, or, respectively, the light beam is polarized and the radio-sensitive optical fiber is a polarization-maintaining fiber.

The invention relates to a method and a device for determining a radiation dose which is undergone by an aqueous liquid by electron radiation. In the method, in the case of an aqueous liquid, which contains or consists of an organic dye and water, a degree of absorption or fluorescence of the liquid is measured before and after direct irradiation with electron radiation with an energy of <600 keV for a predetermined period of time, and from this, a difference is ascertained. A radiation dose, which the liquid has undergone by the electron radiation during the predetermined period of time, is subsequently determined from the difference. The method and the device make it possible to determine a radiation dose which is undergone by an aqueous liquid by electron radiation with an energy of <600 keV.

This invention relates to the field of high-sensitivity radiation detection technology, specifically disclosing a method for preparing silver-doped boron phosphate glass sheets and their applications. The invention involves mixing, degassing, and melting the component raw material powders, pouring the molten glass into a preheated graphite mold, and then annealing, grinding, polishing, and cutting to obtain silver-doped boron phosphate glass sheets. By precisely controlling the P:B ratio and annealing process, this invention introduces B-O-P bridging and B-O-B structures at the glass network structure level, significantly improving the structural and environmental stability of the glass and overcoming the technical defects of existing silver-doped phosphate glasses, such as easy hydrolysis and fragility. The prepared glass sheets exhibit excellent photoluminescence properties, with a good linear relationship between luminescence intensity and radiation dose in the 0-50 Gy dose range, and possess neutron detection potential. They can be applied in fields such as radiation monitoring, high spatial resolution X-ray imaging, non-destructive testing, biomedical imaging, and encryption and anti-counterfeiting technologies.