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WO/2005/001512A2 |
The invention relates to a dosimeter for the detection of highly energy neutron radiation by means of a neutron converter and a detection element. Said dosimeter is characterised in that the neutron converter comprises metal atoms which ...
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WO/2004/109331A2 |
An apparatus for selective radiation detection includes a neutron detector that facilitates detection of neutron emitters, e.g. plutonium, and the like; a gamma ray detector that facilitates detection of gamma ray sources, e.g., uranium,...
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WO/2004/081605A2 |
A tool (3) for measuring formation properties in situ. The tool includes a solid state neutron detector (308) and a neutron source (310) disposed on a drill string or wireline. The detector includes a boron carbon surface deposited on a ...
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WO/2004/043372A2 |
A neutron detector technology based on 10B thin film conversion of neutrons and detection of neutron capture reaction products in a counter gas within a thin straw tube detector body is described. This neutron scatter detector is based o...
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WO/2004/043740A2 |
An inspection system based upon an enclosed conveyance such as a van (10), capable of road travel, for inspecting objects of inspection that may include persons. The conveyance is characterized by an enclosing body, or skin. A source of ...
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WO/2004/040332A2 |
Neutron detectors, advanced detector process techniques and advanced compound film designs have greatly increased neutron-detection efficiency. One embodiment of the detectors utilizes a semiconductor wafer with a matrix of spaced caviti...
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WO/2004/023161A1 |
There is disclosed a method of detecting fast neutrons of energy greater than 5MeV comprising the steps of: providing a neutron detector comprising a plate having a plurality of microchannels or like detection sites disposed thereon whic...
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WO2003102574B1 |
A substance analyzer (110) utilizing Prompt Gamma Neutron Activation Analysis for identifying characteristics of a substance and method of manufacturing the same are disclosed. The analyzer (110) is small enough to be portable and to all...
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WO/2003/075037A1 |
An apparatus and method for detecting neutrons, particularly, with directional sensitivity. The apparatus is a detector with a scintillator (10) containing high neutron-capture-cross-section atoms (20) for capturing neutrons and emitting...
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WO/2003/007018A2 |
The invention relates to an instrument which uses an individual semi-conductive detector with special coverings as an essential sensor, and a method whereby the amplitude information of the signals from said semi-conductive detector are ...
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WO/2003/003050A1 |
The invention relates to a method for detecting neutrons which is characterized in that at least one detector element is used in the form of a superconductive tunnel contact provided with two electrode layers (1, 2) made of magnesium dib...
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WO/2002/029437A2 |
A method for detecting and counting radioactive particles, including in sequence the steps of: introducing microelectronic circuit elements (60) to a radioactive source; rapidly interrogating states of the microelectronic circuit element...
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WO/2001/084183A2 |
An improved method and apparatus for the detection of hydrogenated materials. Detection of concealed hydrogenated materials such as organic explosives, drugs, or biological tissue is accomplished by measuring the backscattering of neutro...
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WO/2000/067044A1 |
The invention provides an event monitoring system, the events particularly being neutrons or other emissions from radioactive materials. The event monitoring system comprising a plurality of detector units, at least one of the detector u...
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WO/2000/062099A1 |
The invention concerns a method and a device for analysing an object (2), in particular a package of radioactive waste, likely to contain fissile isotopes and/or fertile isotopes. The method consists: in irradiating the object with rapid...
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WO/2000/029873A1 |
The invention concerns a neutron detection apparatus (12) which includes an assembly (14) of elongate scintillator elements (16). The longitudinal axes of the scintillator elements (16) are directed towards a fast neutron source (10) and...
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WO/2000/025148A2 |
In a preferred embodiment, a method of enhancing the neutron coincidence assay of low fissile mass samples, by combining assay precision improvement algorithms with novel background and matrix correction algorithms, to provide lower leve...
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WO/2000/013042A1 |
An apparatus and corresponding method to detect the particles of radioactive decay generated in a sample (20) with radioactive material. An array (10) of detectors includes a first set of detectors (30) each with liquid scintillation mat...
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WO/1999/031527A1 |
The invention considers the frequency distributions of singles, doubles and triple neutron emission events from a sample under assay. The count rates are equated to mathematical functions related to the spontaneous fission rate, self-ind...
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WO/1999/022251A2 |
A neutron detector array is capable of measuring a wide range of neutron fluxes. The array includes multiple semiconductor neutron detectors. Each detector has a semiconductor active region that is resistant to radiation damage. In one e...
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WO/1999/022378A1 |
A safety grade protection system for monitoring parameters indicative of the status of a core of a nuclear reactor, and reducing the criticality of the nuclear reaction when the onset of unsafe conditions are detected. The invention dire...
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WO/1999/021192A2 |
A safety grade protection system for monitoring parameters indicative of the status of a core of a nuclear reactor, and reducing the criticality of the nuclear reaction when the onset of unsafe conditions are detected. The invention dire...
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WO/1999/005544A1 |
A number of radiation measuring devices and methods are provided, including a radiation measuring device (1) comprising a plurality of sensors (2) each of which comprises storage phosphors. The sensors (2) are connected to a detection sy...
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WO/1998/057194A1 |
Systems and methods for neutron modulation-activation flow velocity and fissile content measurements are described. An apparatus includes a neutron source (110) located outside a conduit (120); a neutron absorbing material (130) removabl...
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WO/1998/055883A1 |
The invention concerns a device for measuring the relative proportion of uranium and plutonium in a radioactive package (16), comprising: a photon source (10) to irradiate the package; at least a detector of delayed neutrons (18) to deli...
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WO/1998/053341A1 |
A method and apparatus for monitoring a neutron source are provided, the method comprising: i) providing a plurality of neutron detectors (16) at known positions relative to one another; ii) monitoring the neutron detection rates for the...
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WO/1998/053342A1 |
The invention relates to a method for determining neutron spectra. According to said method, the neutron spectrum is determined by at least 2 neutron detectors having different sensitivity functions, the spectrum being deduced from the i...
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WO/1998/025160A1 |
A neutron monitoring instrument, principally of the survey type, is provided with an inner neutron detector(s) enclosed in a layer of neutron attenuating material and one or more outer neutron detectors provided on the attenuating layer ...
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WO/1998/016935A1 |
A monitor for measuring both the gamma spectrum and neutrons emitted by an object such as a spent nuclear fuel pin or pin assembly or nuclear waste material, comprising a lead block (1) presenting a front face (8) intended to be brought ...
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WO/1998/012576A1 |
An apparatus for detecting neutrons includes a cerium activated scintillation crystal (10) containing ?10�B, with the scintillation crystal emitting light in response to $g(a) particles emitted from the ?10�B(n,$g(a))Li* reaction. Th...
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WO/1997/045840A1 |
The present invention relates to a method for measuring, in a given time interval and according to the reaction O-16(n,p)N-16, the counting speed of a detector of 'gamma'-radiation that is emitted by an N-16 isotope from a heat carrier a...
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WO/1997/025631A1 |
The invention concerns a method of quantitative and non-destructive measurement of fissile material based on fission induced by a pulsed neutron source. The method involves the use of a measurement head comprising a measurement chamber w...
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WO/1997/013162A1 |
A self-powered fixed incore detector for a nuclear reactor has a neutron sensitive emitter element having a low neutron absorption cross section, such as a vanadium element, which extends the length of the active fuel region and generate...
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WO/1997/011388A1 |
The invention relates to a method and apparatus for detecting and identifying fissionable materials from among other transported goods, in which method the material (4) under inspection is irradiated with bremmstrahlung (2) generated by ...
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WO/1997/000456A1 |
A neutron detector (5, 10) comprises a diamond detector element (15, 40) doped with boron. Boron-doped diamond substantially improves the rate of neutron detection due to the large amount of pair production, and is extremely mechanically...
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WO/1996/027806A1 |
A directional thermal neutron detector includes an array of individual thermal neutron detector modules (20) each of which comprises front and back planar silicon detectors (22, 24) having a gadolinium foil (26) sandwiched therebetween. ...
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WO/1996/024048A1 |
A contraband detection system (18) using a single, cone shaped neutron beam determines substances concealed in a sample object by developing total neutron cross section spectra for a plurality of elements, including carbon, nitrogen, oxy...
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WO/1996/020412A1 |
An imaging system including an imaging head, a signal processor, a data acquisition system, and an image processing computer is disclosed. The imaging head includes a detector and an aperture for directing the radiation to the detector. ...
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WO/1996/012974A1 |
A counting chamber (24) for neutron detection comprising an outer wall and an inner space for receiving an object to be tested (26). The wall consists of a first inner cadmium coating (32), an inner moderating layer (38), an intermediate...
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WO/1996/004572A1 |
An ionizing radiation detector comprises a flat substrate (30) having a plurality of etched parallel ridges (40) on one surface. The parallel sides of the ridges carry a thin layer of a conducting material, acting as an electrode (50, 60...
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WO/1996/001479A1 |
A single sheet photostimulable phosphor screen, characterized in that said screen contains in consecutive order (1) a support, (2) a continous phosphor-containing layer, and permanently and contiguously united therewith (3) a grid struct...
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WO/1995/035512A1 |
A non-invasive inspection system employs the anisotropic, resonant scattering of neutrons from an object (16) to determine the presence of at least one preselected element therein. A monoenergetic neutron beam (14) is impinged onto the o...
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WO/1995/030909A1 |
A dosimetry method and associated apparatus characterized by the steps of storing information in a three-dimensional optical memory element (20), then exposing the optical memory element to neutron or other high LET radiation to alter th...
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WO/1994/011760A1 |
A dosimetry method, dosimeter and system characterized by the steps of storing information in a three dimensional optical memory element, then exposing the optical memory element to neutron or other high LET radiation to alter the inform...
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WO/1993/012407A1 |
A process measurement system (14) utilizes fast neutron backscattering for measuring density, level, and interfaces of substantially non-hydrogenous materials (18), that is, materials other than those containing hydrogen. Measurement of ...
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WO/1993/001507A1 |
Apparatus for the simultaneous, selective detection of neutrons and X or gamma photons characterized in that it includes: an actual detector comprising an X or gamma scintillator (2) lodged in an outer 6Li doped glass sheath serving as a...
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WO/1992/021043A1 |
A neutron detector (10) includes a body of neutron-responsive material (12) which is operative to produce a detectable signal in response to interaction thereof with a neutron flux and a constituent or added sensitizer (14) which enhance...
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WO/1991/017462A1 |
A neutron exposure dosimeter for individual use and a neutron dose rate meter capable of realizing a response of effective dose equivalent. The neutron exposure dosimeter for individual use has a layer in which a converter such as boron ...
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WO/1989/008855A1 |
The invention is a neutron range spectrometer (10) and method for determining the neutron energy spectrum of a neutron source (12). Neutrons from the source (16) are collimated and detected by a position sensitive neutron counter (20, 28...
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WO/1989/008267A1 |
The integral absorbed local dose of ambient high-energy radiation is measured by means of a moulded cord (1) made of extrudable materials, which is self-supporting or can be incorporated in an elongated object such as an electric cable, ...
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