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公开(公告)号：US20240345283A1
公开(公告)日：2024-10-17
申请号：US18747014
申请日：2024-06-18
摘要： A system identifying a source of radiation is provided. The system includes a radiation source detector and a radiation source identifier. The radiation source detector receives measurements of radiation; for one or more sources, generates a detection metric indicating whether that source is present in the measurements; and evaluates the detection metrics to detect whether a source is present in the measurements. When the presence of a source in the measurements is detected, the radiation source identifier for one or more sources, generates an identification metric indicating whether that source is present in the measurements; generates a null-hypothesis metric indicating whether no source is present in the measurements; evaluates the one or more identification metrics and the null-hypothesis metric to identify the source, if any, that is present in the measurements.
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公开(公告)号：US20240345267A1
公开(公告)日：2024-10-17
申请号：US18638066
申请日：2024-04-17
申请人： Xelera Research LLC
发明人： Bruce Dunham , John Scott Price , Vaclav Kostroun
摘要： A neutron device may include a neutron emitter. The neutron emitter may include a target, an electron source, and a vacuum space in which ionization gas is disposed. The electron source may be configured to emit electrons toward the target when a voltage is applied between the target and the electron source. The vacuum space may be disposed between the target and the electron source. Reaction ions may be released when the electrons interact with the ionization gas. Neutrons may be emitted from the target when the reaction ions contact the target.
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公开(公告)号：US20240296968A1
公开(公告)日：2024-09-05
申请号：US18697908
申请日：2022-10-11
摘要： Embodiments presented provide for an acoustic based radioactive source tracking apparatus, system, and method. The apparatus includes a shield frame configuring an internal volume, a sensing device positioned within the internal volume, a first acoustic transmitter/receiver within the internal volume, and a second acoustic transmitter/receiver external to the shield frame. The sensing device is configured to detect a radioactive source and communicate a signal to the first acoustic transmitter/receiver. The first acoustic transmitter/receiver is configured to receive the signal generated by the sensing device, and to communicate an acoustic signal to the second acoustic transmitter/receiver.
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公开(公告)号：US12013499B2
公开(公告)日：2024-06-18
申请号：US17959811
申请日：2022-10-04
发明人： Hong Joo Ahn , Hwan Seo Park , Jong Kwang Lee , Ki Rak Lee , Kwang Jae Son
IPC分类号： B01D53/00 , B01D53/04 , G01N1/40 , G01N23/2202 , G01T1/167
CPC分类号： G01T1/167 , B01D53/04 , G01N1/4022 , G01N23/2202
摘要： The present invention relates to a method for simultaneous analysis of radiocarbon and tritium, the method including (i) mixing a radioactive waste sample containing a radiocarbon nuclide and tritiated water, and an oxidizing agent; (ii) oxidizing the radiocarbon nuclide in the radioactive waste sample to a gas containing an oxide of the radiocarbon nuclide by the oxidizing agent while suppressing volatilization of compounds containing gamma radionuclides other than the radiocarbon nuclide and tritium; (iii) discharging the gas containing an oxide of the radiocarbon nuclide by injecting an inert gas to the mixture; (iv) vaporizing and discharging the tritiated water in the mixture; and (v) analyzing radioactivity of radiocarbon and tritium from the discharged gas containing an oxide of the radiocarbon nuclide and tritiated water, and an apparatus for analysis of the same.
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5.发明授权公开(公告)号：US11867851B2
公开(公告)日：2024-01-09
申请号：US17789421
申请日：2020-12-11
发明人： Moon Hyung Cho , Yu Ho Weon , Hyeongjin Kim
摘要： A device for measuring large-area radioactive surface contamination can simultaneously obtain a plurality of detection values. The measurement device includes a frame body having a plurality of holes; a mover that is connected to, and moves, the frame body; and a plurality of radiation detectors that rest in the plurality of holes. The detectors detect one or more of: alpha rays, beta rays, or gamma rays. The location and level of radioactive contamination are accurately identified according to a comparison of the detection values of the plurality of radiation detectors.
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公开(公告)号：US20230384463A1
公开(公告)日：2023-11-30
申请号：US18027362
申请日：2021-09-21
申请人： Airthings ASA
发明人： Bjørn Magne SUNDAL
摘要： A radon gas sensor comprising: a diffusion chamber; a photodiode positioned inside the diffusion chamber; and a photomultiplier positioned inside the diffusion chamber; wherein a scintillating material is provided on at least a part of an inner surface of the diffusion chamber. The photomultiplier detects more alpha particles, but cannot distinguish the energies of different alpha particles. On the other hand, the photodiode can distinguish different decays because the magnitude of the signal generated by the photodiode is proportional to the kinetic energy of the alpha particle striking it. Thus, the photodiode produces spectral data. The spectral data is used to estimate the amount of Polonium that is adhering to aerosols. This is used to apply a correction factor to the data to provide a better estimate of the true Radon concentration in the chamber. This can be combined with the count data of the photomultiplier for overall improved data.
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公开(公告)号：US11828887B2
公开(公告)日：2023-11-28
申请号：US16475043
申请日：2018-01-02
发明人： Seung Chan Lee
CPC分类号： G01T1/167 , G01J3/28 , G01T1/1663 , G01T1/36
摘要： The present invention relates to a radioactivity measurement method and a radioactivity measurement system. A radioactivity measurement method according to the present invention comprises the steps of: measuring radioactivity while performing energy scanning and temporal scanning; preparing a database from a time-energy-related data set obtained in result of the scanning; and obtaining a radioactivity measurement value of desired time from the database.
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公开(公告)号：US11754731B2
公开(公告)日：2023-09-12
申请号：US17827321
申请日：2022-05-27
发明人： David Boardman , Adam Sarbutt , Alison Flynn , Dale Prokopovich
摘要： A coded mask apparatus is provided for gamma rays. The apparatus uses nested masks, at least one of which rotates relative to the other.
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公开(公告)号：US20180246232A1
公开(公告)日：2018-08-30
申请号：US15756667
申请日：2016-09-08
申请人： The USA, as represented by the Secretary Department of Health and Human Services , Canberra Industries, Inc.
发明人： Cong Wei , Kelly M. Garnick , Thomas A. Scott , Elon M. Malkin , Jennifer T. Szymanski , Steve Laskos , James Cocks , Jeffrey Ralmondi , Richard Mowry , Hiram Gonzalez , Ronald White , Wilhelm Mueller , Robert Fournier
摘要： A gamma-ray analysis system is described for analyzing gamma-ray emitting radionuclides. The gamma-ray analysis system includes an analytical apparatus having a gamma-ray detector in operative communication with a modular and scalable shield assembly that encases a sample container having a sample to be tested. The detector communicates data to an electronic interface device that converts the data from an analog format to a digital format before a controller transmits the data to a central laboratory for further data processing, analysis and conclusion by qualified laboratory analysts. The controller runs an application software package on a graphic user interface that allows simple steps for conducting testing and data acquisition by the end user, while permitting real time data transmission between the field site and the central location. Functions were implemented for ensuring laboratory quality results while removing knowledge and experience requirements of an end user.
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公开(公告)号：US10001571B2
公开(公告)日：2018-06-19
申请号：US14515321
申请日：2014-10-15
发明人： Mark S Rowland , Neal J Snyderman
CPC分类号： G01T3/00 , G01T1/167 , G01V5/0091
摘要： A neutron detector system and method for discriminating fissile material from non-fissile material wherein a digital data acquisition unit collects data at high rate, and in real-time processes large volumes of data directly into information that a first responder can use to discriminate materials. The system comprises counting neutrons from the unknown source and detecting excess grouped neutrons to identify fission in the unknown source. Comparison of the observed neutron count distribution with a Poisson distribution is performed to distinguish fissile material from non-fissile material.
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