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848 results about "Gamma ray" patented technology

A gamma ray, or gamma radiation (symbol γ or γ), is a penetrating electromagnetic radiation arising from the radioactive decay of atomic nuclei. It consists of the shortest wavelength electromagnetic waves and so imparts the highest photon energy. Paul Villard, a French chemist and physicist, discovered gamma radiation in 1900 while studying radiation emitted by radium. In 1903, Ernest Rutherford named this radiation gamma rays based on their relatively strong penetration of matter; he had previously discovered two less penetrating types of decay radiation, which he named alpha rays and beta rays in ascending order of penetrating power.

Nuclear radiation index early warning system based on multi-algorithm fusion

The invention discloses a nuclear radiation index early warning system based on multi-algorithm fusion, and the system comprises an environment data collection module which is used for collecting gamma-ray dose rate data, wind speed data, wind direction data and geographic position information, and constructing a nuclear radiation environment data set; the dose rate prediction module is used for predicting a future change trend of gamma ray dose rate data based on a sparse recurrent neural network model; the anomaly detection module is used for identifying an abnormal mutation point and positioning the position of a high-risk sensor; the diffusion region modeling module is used for calculating a nuclear radiation diffusion influence region; the grid risk evolution module is used for simulating time sequence evolution of a regular grid risk state based on the multi-state cellular automaton; and the fusion judgment module is used for fusing output results and generating a final early warning grade and a spatial risk distribution result. According to the invention, accurate prediction of the nuclear radiation risk and dynamic space early warning are realized, and the early warning accuracy and response efficiency are significantly improved.
Owner:SHAANXI QINZHOU NUCLEAR & RADIATION SAFETY TECHNONLOY CO LTD

Lead-free rubber with ionizing radiation shielding performance and preparation method thereof

The invention relates to the field of shielding materials, and provides lead-free rubber with ionizing radiation shielding performance and a preparation method thereof, and the lead-free rubber is mainly prepared from barium titanate / boron nitride composite filler, barium tungstate / boron carbide composite filler, tungsten powder, bismuth powder, a rubber matrix and an auxiliary agent according to a proportion. The barium titanate particles are uniformly loaded on the surface of the flaky boron nitride, so that the gamma ray and X ray shielding performance is improved, and meanwhile, the boron nitride provides excellent neutron shielding capability; barium tungstate particles are loaded on the surfaces of the boron carbide nanowires to form a multi-scale shielding network, and the shielding effect of neutrons and ionizing radiation is remarkably enhanced. The rubber matrix endows the material with excellent flexibility and mechanical properties. By scientifically optimizing the component proportion and the preparation process, the problems that a traditional high-density shielding material is prone to agglomeration, poor in flexibility and the like are solved, and the material shows excellent performance in the fields of gamma ray, X ray and neutron shielding and is suitable for the fields of nuclear energy, medical protection, industrial radiation protection and the like.
Owner:HEFEI AIJIA RADIATION PROTECTION TECH CO LTD

Ore grade analysis method and system

PendingCN120064357AMaterial analysis using wave/particle radiationGamma rayResonance fluorescence
The invention provides an ore grade analysis method. The ore grade analysis method comprises the following steps: generating an X-ray beam by utilizing a radiation source; x-ray beams are utilized to irradiate the ore, target element nuclides in the ore are excited to generate a nuclear resonance fluorescence effect, target characteristic gamma rays are emitted, and the energy of the X-ray beams is higher than the excitation energy of the target element nuclides; when the X-ray beam is utilized to irradiate the ore, a standard sample containing a reference nuclide is irradiated, the reference nuclide is excited to emit a reference characteristic gamma ray, and the reference nuclide is expressed as a nuclide with known content and known characteristic gamma ray energy; detecting the energy of a target characteristic gamma ray and the energy of a reference characteristic gamma ray; and determining the grade of the target element in the ore based on the energy of the target characteristic gamma ray and the energy of the reference characteristic gamma ray.
Owner:NUCTECH CO LTD +1

Compton camera XFCT imaging system and image reconstruction method thereof

The invention discloses a Compton camera XFCT imaging system and an image reconstruction method thereof.The Compton camera XFCT imaging system comprises a radiation source and two sets of double-layer Compton camera detectors, the two sets of double-layer Compton camera detectors are arranged on the same straight line at intervals, and the radiation source is located beside the straight line; the two sets of double-layer Compton camera detectors are symmetrical about the ray source, and the ray source is a gamma ray source; each of the two sets of double-layer Compton camera detectors comprises a scattering detector and an absorption detector, and the scattering detectors are used for recording Compton scattering positions and deposition energy of recoil electrons; and the absorption detector is used for receiving the scattered photons and recording an absorption position and deposition energy.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY

Elemental analysis device based on high-yield DD neutron generator

The invention discloses an element analysis device based on a high-yield DD neutron generator. The device is composed of a neutron source item system, a neutron shielding collimation wall, a detector shielding protection system, a detected sample system, a signal acquisition system and a data analysis system. A neutron beam is generated through (D, D) nuclear reaction and irradiates a sample after passing through a neutron moderation layer and a shielding collimation wall, so that the sample generates instant characteristic gamma rays. A shielding protection system with unique design effectively reduces background gamma ray interference and electromagnetic interference, and ensures that the detector accurately collects sample signals. By matching with an advanced signal acquisition and analysis system, the element components and content of the sample can be analyzed at high precision. In addition, the device can be combined with a neutron imaging system to obtain sample structure information. The method has great application potential in the fields of industrial production, scientific research and detection and the like, and can meet the requirements of high-precision element analysis on small-size samples.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

CLYC neutron-gamma ray discrimination detection method and device based on deep learning

The invention relates to the technical field of CLYC neutron-gamma rays, and provides a CLYC neutron-gamma ray screening detection method and device based on deep learning, and the method comprises the steps: carrying out the preprocessing of an original pulse waveform outputted by a CLYC detector, and obtaining clean standard waveform data; constructing a one-dimensional convolutional neural network model, respectively capturing the features of the waveform at different time scales, and identifying the most discriminative feature region in the waveform through an attention mechanism; performing adaptive adjustment on the original hyper-parameter of the one-dimensional convolutional neural network model to obtain an optimized hyper-parameter; establishing a direct mapping relation from an original pulse waveform to a neutron-gamma particle type to obtain a trained model; and carrying out compression optimization processing on the model, and deploying the model to an embedded platform to carry out neutron-gamma ray discrimination. According to the method, automatic extraction of deep discrimination features of the CLYC pulse waveform and accurate identification of key feature areas are realized, and the discrimination accuracy and noise interference resistance of neutron-gamma rays are improved.
Owner:CHINA STATE SHIPBUILDING CORP LTD RESEARCH INSTITUTE 719

Electromagnetic and radiation shielding using nanoforests

A lightweight radiation shielding material. A carbon nanotube forest is embedded in a matrix comprising nanoparticulates, such as nanoparticles, carbon nanotubes, or graphene nanosheets. The nanoparticulates can be low atomic number (low-Z) or high atomic number (high-Z). The matrix can be a solidified polymer, epoxy, resin, or ceramic precursor, for example silicon carbide. The radiation shield can shield an object from radio frequency interference (RFI), lightning, electromagnetic interference (EMI), an electromagnetic pulse (EMP), gamma rays, X-rays, neutrons, and / or protons. The nanoforest is disposed on a conductive base with sufficient in-plane electrical conductivity to provide an effective conductive path for currents induced by radiation absorption. The base can be a second nanoforest comprising horizontally-oriented carbon nanotubes, which makes the shield particularly lightweight, as low as 10% of the mass of aluminum that provides equivalent shielding. The base can be adhered to an object to be shielded.
Owner:GOODMAN TECH LLC +1

Hybrid neutron gamma detector array and signal processing method

The invention discloses a hybrid neutron gamma detector array and a signal processing method, and relates to the technical field of nuclear physical detection.During detection, eight EJ200 scintillators arranged in an array are used for energy deposition of gamma rays and fast neutrons and generating photons, and meanwhile three EJ426 thermal neutron scintillation screens are used for capturing thermal neutrons and generating photons; the response of gamma rays, fast neutrons and thermal neutrons is realized at the same time, and the detection precision is greatly improved. Meanwhile, if the three EJ426 thermal neutron scintillation screens are alternately stacked front and back, the total reflection of the EJ200 scintillators and the semi-light-proof performance of the EJ426 thermal neutron scintillation screens are utilized to block photon propagation in the X direction and only enable photons to be propagated in the Y direction and the Z direction, and each EJ200 scintillator corresponds to a four-channel photon collection structure to perform high-efficiency collection of the photons, so that the high-efficiency collection of the photons is realized. Therefore, high-precision detection and high-efficiency photon collection are realized, and support is provided for subsequent intense radiation field monitoring or high-precision positioning.
Owner:LONGYAN UNIV

Boron neutron capture therapy beam shaping device and boron neutron capture therapy system

The invention relates to the technical field of radiation therapy, in particular to a boron neutron capture therapy beam shaping device and a boron neutron capture therapy system. The beam shaping device for boron neutron capture therapy is used for beam shaping of a DT neutron tube generator. The interior of the beam shaping device is provided with a particle beam channel, and the particle beam channel is used for generating an initial neutron source through an incident proton beam. The beam shaping device comprises a value-added layer, a moderator, a filter layer, a reflecting layer, a collimator and a shielding layer, wherein the value-added layer, the moderator, the filter layer and the collimator are sequentially arranged from a target material to an outlet. And the axes of the particle beam channel, the value-added layer, the moderator and the collimator coincide. According to the beam shaping device, 14Mev high-energy neutrons from the DT neutron tube generator are shaped into hot / slow neutron beams meeting the BNCT treatment requirements, and impurities of fast neutrons and gamma rays are reduced to the maximum extent, so that the dosage precision and biological selectivity of treatment are effectively improved.
Owner:XINLI (BEIJING) PHARMACEUTICAL TECHNOLOGY CO LTD

Method for detecting coal seam interface while drilling

The invention relates to a method for detecting a coal seam interface while drilling, relates to the technical field of geological exploration, overcomes the limitation of a single physical field by using multi-modal fusion of electromagnetic waves, sound waves and gamma rays, remarkably improves the detection precision, greatly reduces the identification error of a thin coal seam compared with a traditional method, and improves the identification success rate of a complex structural region (fault and dirt band). Preliminary response within 1s is realized through underground edge calculation, decision lag is compressed to 1.5 s through ground cooperative processing, and leap of data real-time performance and predictive capacity is realized; the front 0.5-1.5 m prediction function gains time for track adjustment, and the risk of penetrating out of the coal seam is reduced. The multi-sensor redundancy design still keeps the signal-to-noise ratio not less than 20dB in a strong noise environment, the detection success rate is greatly improved when mud invasion is serious, and the environmental adaptability is high. The coal seam drilling rate is increased, invalid footage is reduced, the single well comprehensive cost is reduced, and economic benefits are remarkably improved.
Owner:GEOPHYSICAL SURVEY TEAM OF CHINA COAL GEOLOGY ADMINISTRATION

Radiation-proof glass as well as preparation method and application thereof

PendingCN120025068AGamma rayChemical stability
The invention belongs to the technical field of special glass preparation, and particularly relates to radiation-proof glass as well as a preparation method and application thereof. The radiation-proof glass is prepared from the following oxides in percentage by mass: 30 to 45 percent by weight of SiO2, 10 to 25 percent by weight of B2O3, 7 to 12 percent by weight of BaO, 1 to 5 percent by weight of ZnO, 1 to 5 percent by weight of CeO2, 15 to 24 percent by weight of La2O3, 5 to 9 percent by weight of Gd2O3, 1 to 5 percent by weight of Ga2O3, 1 to 5 percent by weight of WO3 and 1 to 4.9 percent by weight of HfO2. The radiation-proof glass has the following advantages that the radiation-proof glass does not contain any one of heavy metal oxides such as As2O3, Sb2O3, PbO, Tl2O, CdO, BeO and V2O5 harmful to the environment, the shielding rate of the glass is larger than or equal to 96%, and the radiation-proof glass is excellent in optical uniformity, chemical stability and mechanical performance and good in anti-radiation performance. The invention further provides application of the radiation-proof glass in medical treatment, nuclear power and nuclear physics experiment protection and gamma ray protection.
Owner:LUMISING SPECIAL GLASS TECH CO LTD

Time-walk correction using multiple energy measurements

An apparatus and method are provided to correct for time-walk errors during photon detections (e.g., detecting gamma rays). A time-walk correction is determined using measurements of energy (or charge) that apply different time windows, enabling corrections accounting for variations in the ratio between fast and slow components in the detected pulse. For example, one time window can be used to integrate the leading end of the pulse, thereby predominantly measuring the fast component, while a second window is used to integrate a trailing end of the pulse to predominantly measure the slow component. Alternatively or additionally, low-pass and high-pass filters may select the slow and fast components, respectively. The time-walk correction is a function of multiple measurements representing different components (e.g., fast and slow) of the pulse shape.
Owner:CANON MEDICAL SYST CORP

Method and system for GR LWD curve optimization for deep-field oil and gas precise navigation

The present invention is in the field of geological exploration and particularly relates to a method and system for gamma ray (GR) while drilling parameter data optimization for deep-filed oil and gas precise navigation, aiming to solve the problem of insufficient measurement accuracy of the depth of a well in the existing drilling technology. The present invention comprises: eliminating outliers from the obtained GR while drilling parameter data and determining the rationality of the eliminated outlier; performing derivation on a real-time updated variance attribute while drilling curve to obtain a real-time updated formation change-point detection result; searching the formation change-point detection result of a pre-drilling predicted well curve; and correcting the drilling depth by comparing the two formation change-point detection results to obtain the accurate depth while drilling.
Owner:INSTITUTE OF GEOLOGY AND GEOPHYSICS CHINESE ACADEMY OF SCIENCES

Nuclear radiation detection management system based on artificial intelligence

The invention relates to the technical field of nuclear radiation detection management, and discloses a nuclear radiation detection management system based on artificial intelligence, comprising: a dynamic sensing module which detects nuclear radiation through quantum sensing to obtain radiation data, captures NV color center fluorescence intensity, analyzes to obtain gamma ray dose rate, constructs a nanoscale olfactory receptor simulation structure, and sends the radiation data to a control module; radioactive gas is detected and cooperatively monitored; the reasoning calculation module is used for analyzing space-time correlation based on radiation data, optimizing algorithm to accelerate result output, adjusting calculation complexity by calculating dynamic weight distillation, and correcting data transmission in real time; the decision management module is used for constructing a four-dimensional causal graph based on the radiation data, performing intervention simulation, evaluating a decision long-term effect, screening an optimal decision, and performing adversarial training based on historical repair case data; and the fusion cooperation module is used for establishing a cross-mechanism federated learning framework, carrying out hash operation on the radiation data, and establishing an NFT (Network Fourier Transform) on a block chain through an intelligent contract for query, verification and transaction.
Owner:SHAANXI QINZHOU NUCLEAR & RADIATION SAFETY TECHNONLOY CO LTD

Neutron generator-based scrap steel briquette component online detection device and method

The invention relates to the technical field of steel smelting scrap steel briquette treatment, and particularly provides a neutron generator-based scrap steel briquette component online detection device and method. Neutrons generated through nuclear reaction of a neutron generator are absorbed and activated with elements such as Fe in the scrap steel, gamma rays with characteristic energy are emitted, then the energy intensity of the gamma rays is observed, contrasted and calibrated from the response of a detector, and therefore the content composition and the content proportion of all the elements, mainly the Fe element, in the scrap steel briquette are calculated, analyzed and determined. The device effectively avoids the low-quality employment risk in the detection of the scrap steel briquettes, solves the problems that the detection of the internal quality of the scrap steel briquettes is difficult, time-consuming and labor-consuming, remarkably improves the working efficiency and effect, and has remarkable economic benefits and popularization prospects.
Owner:SHANDONG IRON & STEEL CO LTD

High-strength tungsten-boron silicone rubber radiation shielding material and preparation method thereof

The invention discloses a high-strength tungsten-boron silicone rubber radiation shielding material, which is prepared from the following ingredients in parts by weight: 100 parts of methyl vinyl silicone rubber raw rubber, 30 to 50 parts of white carbon black, 90 to 240 parts of tungsten oxide coated boron carbide heterostructure particles, 4 to 10 parts of hydroxyl silicone oil and 1 to 2.5 parts of 2, 5-dimethyl-2, 5-bis-(tert-butylperoxy) hexane. The preparation method comprises the following steps: 1, surface modification of tungsten oxide particles; 2, boron carbide surface modification; 3, grafting the surfaces of the two; and 4, mixing and vulcanizing the raw materials. White carbon black and tungsten oxide coated boron carbide heterostructure particles are introduced into the material, so that the dispersity of tungsten oxide particles in a silicon rubber matrix is improved, the interface interaction between boron carbide and the silicon rubber matrix is enhanced, the high strength of the material is ensured, and the material has excellent mechanical strength and neutron / gamma ray comprehensive shielding performance; the method is easy for mass production and can be used in the field of radiation protection.
Owner:XIAN RARE METAL MATERIALS RES INST CO LTD

3D semiconductor detector system

A detector system for molecular imaging of a radionuclide comprises a 3D semiconductor detector comprising a plurality of sensor stacks of sensors made of a semiconductor material having an average atomic number Z below 40. A read-out circuitry connected to the pixels is configured to output, for each interaction induced by an incident gamma ray in the detector, a signal representative of a time, a position and an energy of the interaction in the detector. The interactions in the detector belonging to a same event induced by the incident gamma ray are predicted based on the output signals and used to estimate a direction of the incident gamma ray and reconstruct an image based on the estimated directions of incident gamma rays.
Owner:SISNAP AB

Gamma imaging noise reduction detector based on depth information

The invention provides a gamma imaging noise reduction detector based on depth information, which comprises a layered probe, a host and an acquisition circuit, and is characterized in that the layered probe is of a multi-layer structure formed by arranging single-layer position sensitive probes front and back; the acquisition circuit acquires timestamps, positions and amplitude information of the electric pulse signals; the host is responsible for collecting the number of the collection circuit and generating a detector image, forming the same particle event by using the electric pulse signals with the same timestamp, and determining thickness direction information of activated pixel data corresponding to each electric pulse signal through the number of the collection circuit. And only the data of the foremost activation pixel in the thickness direction is accumulated into the detector image. According to the method, a thick detector is divided into layered probes to obtain depth information of particle energy deposition, so that the noise influence caused by scattering in a detector crystal in medium-high energy gamma ray imaging is reduced, a first scattering point is speculated to eliminate secondary scattering noise of medium-high energy gamma rays, and the contradiction between the imaging speed and the imaging quality is solved.
Owner:SHANGHAI INSTITUTE OF APPLIED PHYSICS CHINESE ACADEMY OF SCIENCES

Radiation detection device and method for measuring ultra-wide-range gamma rays

The invention provides a radiation detection device and method for measuring ultra-wide-range gamma rays, and relates to the technical field of radiation detection.The radiation detection device comprises a detection assembly, a radiation shielding assembly and a signal processing assembly, and the signal processing assembly is located in the radiation shielding assembly; the detection assembly comprises three GM counting tubes with different measuring ranges and an acquisition circuit, and the acquisition circuit is used for converting signals output by the GM counting tubes into voltage counting signals; the signal processing assembly comprises a high-voltage control circuit, a power supply processing circuit, a pre-amplification circuit and a processor, the power supply processing circuit is used for converting a direct-current power supply signal and then transmitting the converted direct-current power supply signal to the high-voltage control circuit and the acquisition circuit, and the high-voltage control circuit is used for outputting a high-voltage power supply signal to each GM counting tube; the pre-amplification circuit is used for filtering and amplifying the voltage counting signals, and the processor is used for determining a target radiation dose rate according to the processed voltage signals. The radiation detection device provided by the invention has a relatively wide measuring range and relatively high measurement precision.
Owner:CHINA STATE SHIPBUILDING CORP LTD RESEARCH INSTITUTE 719

Compact high-energy gamma generator for checking special nuclear material and checking method

The invention discloses a compact high-energy gamma generator for special nuclear material checking and a checking method.The gamma generator comprises a shell and an ion source, the shell is internally provided with a high-pressure vacuum cavity, the ion source is arranged at the left end of the high-pressure vacuum cavity, the right end of the high-pressure vacuum cavity is provided with a high-pressure connector system, and the left end of the high-pressure connector system is connected with a leading-out accelerating electrode; a target holder is arranged in the extraction accelerating electrode, and a boron target sheet is mounted on the target holder; negative high voltage is fed into the extraction accelerating electrode through the high-voltage connector system, an electric field is formed between the extraction accelerating electrode and the anode of the ion source, the proton beam is extracted and accelerated by the electric field and then bombarded on the boron target sheet, 11B (p, gamma) 12C resonance radiation capture reaction is carried out, and high-energy gamma rays are released; the gamma ray and the special nuclear material are subjected to a photofission reaction to emit instant neutrons and delayed neutrons, and the detection of the special nuclear material is realized by measuring the instant neutrons and the delayed neutrons. The device is compact in structure, high in detection sensitivity, short in detection time, low in interference and long in service life, and has very high application value.
Owner:LANZHOU UNIV

Neutron and gamma ray integrated aluminum-based nuclear shielding material and preparation method thereof

The invention discloses a neutron and gamma ray integrated aluminum-based nuclear shielding material. The aluminum-based nuclear shielding material comprises, by mass, 1%-10% of boron carbide, 5%-30% of high-entropy alloy powder and 60%-94% of aluminum alloy powder. The invention further discloses a preparation method of the aluminum-based nuclear shielding material. The preparation method comprises the steps that firstly, boron carbide, high-entropy alloy powder and aluminum alloy powder are mixed and then subjected to ball milling; step 2, crushing; 3, cold pressing and hot pressing sintering; and 4, hot rolling and solid solution aging heat treatment. According to the neutron and gamma ray integrated aluminum-based nuclear shielding material, the gamma ray shielding efficiency and the mechanical property of the aluminum-based nuclear shielding material are improved by introducing the high-entropy alloy powder, the neutron and gamma ray integrated aluminum-based nuclear shielding material high in shielding efficiency and excellent in comprehensive mechanical property is obtained, and the neutron and gamma ray integrated aluminum-based nuclear shielding material is suitable for the technical fields of small reactors, movable reactors, nuclear submarines and the like.
Owner:XIAN RARE METAL MATERIALS RES INST CO LTD

Low-dose x-ray imaging system

PendingUS20250235172A1TomosynthesisComputerised tomographsSingle photon emission computerized tomographyTomosynthesis
A back illuminated sensor is included as a collector component of a detector for use in intraoral and extraoral 2D and 3D dental radiography, digital tomosynthesis, photon-counting computed tomography, positron emission tomography (PET), and single-photon emission computed tomography (SPECT). The disclosed imaging method includes one or more intraoral or extraoral emitters for emitting a low-dose gamma ray or x-ray beam through an examination area; and one or more intraoral or extraoral detectors for receiving the beam, each detector including a back illuminated sensor. Within the detector, the beam is converted into light and then focused and collected at a photocathode layer without passing through the wiring layer of the back illuminated sensor.
Owner:REAL TIME IMAGING TECHNOLOGIES LLC

Method for detecting boron distribution in oxidation corrosion product deposition layer

The invention relates to a method for detecting boron distribution in an oxidation corrosion product deposition layer. The total mass of boron in the oxidation corrosion product deposition layer is detected by utilizing an instantaneous gamma activation technology; the method comprises the following steps: obtaining a geometric boundary of a deposition layer of a corrosion product according to neutron photography, constructing a Compton cone in the geometric boundary obtained by neutron photography according to instant gamma rays generated by the oxidation corrosion product and Compton scattering information generated by the action of a Compton photography unit, and reconstructing the origin of the gamma rays; and carrying out pixelated image reconstruction by adopting a random origin set algorithm to obtain a distribution image generated by gamma rays so as to obtain the proportional distribution of the boron element in the oxidation corrosion product deposition layer. According to the obtained total boron element concentration and boron element proportion distribution, boron element concentration distribution in the oxidation corrosion product deposition layer is calculated, and the defects that only boron element distribution in the limited depth of the surface of the corrosion product deposition layer can be measured and internal element distribution information cannot be obtained in an existing method are overcome.
Owner:SHANGHAI JIAOTONG UNIV

Rare earth resource quantity prediction system and method for deep-sea sediments

The purpose of the present invention is to provide a system and method for predicting the amount of rare earth resources in deep-sea sediments, which can determine rare earth lithofacies analysis information of deep-sea sediments by using natural gamma ray data, and in addition, can predict the amount of rare earth resources. In order to achieve the purpose, the system for predicting the amount of rare earth resources in deep-sea sediments using gamma rays, according to the present invention, comprises: a data collection unit for collecting gamma ray data relating to deep-sea sediments; a data processing unit that normalizes and processes the gamma-ray data collected by the data collection unit; and a prediction modeling unit for generating a model for predicting rare earth lithofacies analysis information and the amount of rare earth resources by a linear regression method on the basis of the data normalized by the data processing unit.
Owner:KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES

Method for efficiently generating high-brightness gamma radiation

The invention discloses a method for efficiently generating high-brightness gamma radiation, and belongs to the technical field of radiation. A relativistic electron beam is injected into the porous microstructure foam target material, and high-brightness gamma ray radiation is generated. According to the method, the used device is simple, only the single relativistic electron beam and the porous microstructure foam target material are needed to interact, compared with a traditional uniform-density solid material, the energy conversion efficiency in the interaction process of the electron beam and a substance can be remarkably improved, and the energy conversion efficiency can be remarkably improved through the effective constraint effect of a high-intensity magnetic field. And the problems of low energy conversion rate, low light source brightness, poor radiation directivity, complex device or difficulty in experiment implementation and the like of the existing high-energy gamma ray radiation source are solved.
Owner:SHENZHEN TECH UNIV

Gamma radiation field simulation method, gamma radiation monitoring simulation training system and application

The invention relates to a gamma radiation field simulation method, a gamma radiation monitoring simulation training system and application of the gamma radiation field simulation method and the gamma radiation monitoring simulation training system, and a three-dimensional simulation gamma radiation field and the gamma radiation monitoring simulation training system are constructed based on the Beidou positioning technology, the computer and communication technology and the action law of gamma rays and substances. The simulation training system is composed of a guide center, a Beidou positioning and communication base station, a simulation training ground, a simulation gamma radioactive source and a simulation gamma radiation monitor. The parts of the system exchange information through wired or wireless communication. The simulated gamma radiation source and the simulated gamma radiation monitor both have an accurate positioning function, and the simulated gamma radiation monitor also has a function of calculating and obtaining a gamma radiation dose rate and a dose. The problem of simulation and monitoring simulation training of a space gamma radiation field generated by a plurality of real gamma radioactive sources is solved, so that the effects of simulation training such as searching for more than one gamma radioactive source, determining gamma radioactive contamination boundaries and measuring personal accumulated doses are close to reality.
Owner:SHENZHEN XINBANGWEI CLOTHING CO LTD +1

Radiation detection element, radiation detector, and production method for radiation detection element

Provided are a radiation detection element, a radiation detector, and a production method for the radiation detection element that make it possible to measure the energy of radiation with favorable accuracy. A radiation detection element according to the present invention includes: a compound semiconductor crystal substrate that comprises cadmium zinc telluride to which indium has been added as an impurity; and a metal electrode that is provided on the surface of the compound semiconductor crystal substrate. The energy resolution for gamma rays of 122 keV emitted from 57Co is no more than 7%.
Owner:JX ADVANCED METALS CORP

Gamma ray guided resistivity anisotropy inversion of multi-component induction

Described herein are systems and techniques for improving the accuracy of computer models that determine properties of subterranean rock formations. Such systems and methods may perform multiple sets of calculations using data collected by different types of sensing devices that may be deployed in a wellbore. For example, a first set of inversions may be made on data collected by an electromagnetic (EM) sensing device and a second set of inversions may be made using EM data and data collected by a gamma ray (GR) sensing device. Such methods may be useful when making determinations regarding subterranean features that include laminated structures. For example, when rock structures include layers of sand and layers of shale.
Owner:HALLIBURTON ENERGY SERVICES INC

Cross-linked foaming polyethylene core wire coaxial cable

The invention belongs to the field of coaxial cables, and particularly relates to a cross-linked foaming polyethylene core wire coaxial cable. The cross-linked foaming polyethylene core wire coaxial cable comprises an inner conductor, an insulating layer, an outer conductor layer and an outer sheath layer which are sequentially coated from inside to outside, the insulating layer is prepared by the following method: S1: performing foaming extrusion on a base material, a cross-linking agent and a nucleating agent to obtain an insulating core wire; during foaming extrusion, foaming gas is adopted for physical foaming; the base material is selected from high-density polyethylene; and S2, performing irradiation crosslinking on the insulating core wire through high-energy rays (such as gamma rays, alpha rays and electron rays) to obtain an insulating layer. The cross-linked foaming polyethylene core wire coaxial cable is suitable for high-temperature-resistant occasions including high-power high-frequency signal transmission occasions and coaxial cable frequent welding occasions, and can meet the requirements of a high-end communication system.
Owner:JIANGSU HENGXIN TECH CO LTD