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| Number | Title | Issue Date |
| 8129690 | High sensitivity B-10 neutron detectors using high surface area inserts A neutron detector that includes an anode and a cathode. The cathode includes at least one portion that has a porous substrate with surface segments that define open pores and a layer of neutron sensitive material on the surface segments of the porous substrate.... | 03/06/2012 |
| 8129691 | Security inspection door A security inspection door comprising a narcotic drug/explosive detecting subsystem, a radioactive substance detecting subsystem and a metal detecting subsystem which are provided in a tank body is disclosed, wherein electromagnetic radiation shields are respectivel... | 03/06/2012 |
| 8084747 | Composite dielectric fins in enhanced area boron coated neutron detectors A neutron detector that includes a hollow member extending along and circumscribing an axis. The hollow member has an interior surface and bounds a volume. The detector also includes an anode extending within the volume. The detector also includes a cathode that inc... | 12/27/2011 |
| 8080807 | Using UV light source for self testing gas filled gamma and neutron detectors An apparatus for detecting at least one of neutron and gamma ray reception and outputting a signal indicative of the reception. A detector is responsive to the at least one of neutron and gamma ray reception. The detector has a cathode, an anode separated by a space... | 12/20/2011 |
| 8044366 | Method for the determination of the neutron multiplicity counter dead time parameter A method is provided for simplifying the calibration of neutron multiplicity counters. The method includes multiplicity counter dead time correction algorithms that preclude the need for extended calibration steps with known radiation sources. The algorithms include... | 10/25/2011 |
| 7952078 | Neutron sensitivity by increasing boron surface area A neutron detector including an anode and a cathode. The cathode extends proximate the anode and has a face including boron. The face has varied topography. The varied provides increased surface density. ... | 05/31/2011 |
| 7923698 | Neutron detector A neutron detector comprises a gas-filled dielectric shell, preferably a glass balloon, having opposite electrodes. An electric field is established whereby ionizing particles may be detected via ionization and current flow in the gas, using a pulse height analyzer ... | 04/12/2011 |
| 7915596 | Integrated neutron-gamma radiation detector with optical waveguide and neutron scintillating material A radiation detector includes a neutron sensing element having a neutron scintillating material at least partially surrounded by an optical waveguide material; and a photosensing element optically coupled to the neutron sensing element. The photons emitted from the ... | 03/29/2011 |
| 7910893 | B10 neutron detector in pie shaped sectors A neutron detector array that includes a hollow member circumscribing an axis and bounding a volume. A divider extends parallel to the axis within the hollow member to divide the volume into a plurality of volume portions. A plurality of anodes extend parallel to th... | 03/22/2011 |
| 7902517 | Semiconductor neutron detector A neutron detector has a compound of lithium in a single crystal form as a neutron sensor element. The lithium compound, containing improved charge transport properties, is either lithium niobate or lithium tantalate. The sensor element is in direct contact with a m... | 03/08/2011 |
| 7855372 | Non-streaming high-efficiency perforated semiconductor neutron detectors, methods of making same and measuring wand and detector modules utilizing same Non-streaming high-efficiency perforated semiconductor neutron detectors, method of making same and measuring wands and detector modules utilizing same are disclosed. The detectors have improved mechanical structure, flattened angular detector responses, and reduced... | 12/21/2010 |
| 7851766 | Multi-stage system for verification of container contents A multi-stage process utilizing one or more radiation sensors on a distributed network for the detection and identification of radiation, explosives, and special materials within a shipping container. The sensors are configured as nodes on the network. The system su... | 12/14/2010 |
| 7847265 | Method and system for detecting an explosive A method and system for detecting at least one explosive in a vehicle using a neutron generator and a plurality of NaI detectors. Spectra read from the detectors is calibrated by performing Gaussian peak fitting to define peak regions, locating a Na peak and an anni... | 12/07/2010 |
| 7800073 | Moldable neutron sensitive compositions, articles, and methods Moldable neutron sensitive compositions containing an inorganic scintillating component, and neutron capture component, and a moldable resin component, are described. They are prepared with optimized compositions for maximized thermal neutron sensitivity. Methods fo... | 09/21/2010 |
| 7795595 | Method and system for calibrating acquired spectra for use in spectral analysis A method for calibrating acquired spectra for use in spectral analysis includes performing Gaussian peak fitting to spectra acquired by a plurality of NaI detectors to define peak regions. A Na and annihilation doublet may be located among the peak regions. A predet... | 09/14/2010 |
| 7791038 | Neutron detection In some embodiments, an electron multiplier includes a neutron-sensitive composition having, in weight percent, approximately 30% to approximately 60% silicon oxide, approximately 20% to approximately 60% lead oxide, and approximately 1% to approximately 15% boron-1... | 09/07/2010 |
| 7745800 | Omni-directional solid-state thermal neutron detector A directional neutron detecting apparatus includes first and second neutron detectors. Each neutron detector includes a thin planar sheet of neutron-reactive material; a first ohmic electrode operably coupled to one side of the planar sheet of neutron-reactive mater... | 06/29/2010 |
| 7741612 | Integrated neutron-gamma radiation detector with optical waveguide and neutron scintillating material An integrated neutron-gamma radiation detector includes a gamma sensing element, a neutron sensing element comprising a neutron scintillating material at least partially surrounded by an optical waveguide material, and a photosensing element optically coupled to bot... | 06/22/2010 |
| 7663119 | Process for neutron interrogation of objects in relative motion or of large extent The invention relates to the fact that a common industrial neutron interrogation screening requirement is that a high throughput rate be accommodated by the screening system. The accumulation of elemental abundance ratio spectral data to minimize statistical uncerta... | 02/16/2010 |
| 7635849 | Detector The invention relates to a detector for detecting electrically neutral particles. The detector has a housing (10) filled with a counting gas. A converter (22) in the housing (10) generates conversion products as a result of the absorption of the... | 12/22/2009 |
| 7592601 | Radiation detection system using solid-state detector devices A neutron detection device (100) includes a semiconductor substrate including a gallium arsenide substrate region (102) having a back surface, and a high purity gallium arsenide active region (104) having a front surface. A back contact layer ( | 09/22/2009 |
| 7531811 | Hemispherical radiation detector A detector is provided that includes a plurality of layered hemispherically shaped elements. Each element is configured to sense the detection of an event. The detector further includes a lead for each element. Each lead is configured to pass a detection signal when... | 05/12/2009 |
| 7514694 | Neutron detector A neutron detector has a volume of neutron moderating material and a plurality of individual neutron sensing elements dispersed at selected locations throughout the moderator, and particularly arranged so that some of the detecting elements are closer to the surface... | 04/07/2009 |
| 7439519 | Neutron detection based on coincidence signal A method includes detecting a neutron based on a time proximity of a first signal and a second signal. The first signal indicates detection of at least one of a neutron and a gamma ray. The second signal indicates detection of a gamma ray. ... | 10/21/2008 |
| 7375343 | A1MgBand related icosahedral boride semiconducting materials for neutron sensing applications A neutron detecting and method of use for a semiconducting material having a formula of M1M2B14 where M1 is aluminum, magnesium, silver, sodium or scandium and M2 is boron, chromium, erbium, holmium, lithium, magnesium, thulium, titanium, yttrium, or gado... | 05/20/2008 |
| 7372009 | Solid-state thermal neutron detector A solid-state thermal neutron detector comprises: a layered structure that includes; an electrically insulating substrate; a first electrode affixed to the substrate; a neutron-reactive layer affixed to and in ohmic contact with the first electrode; and a second ele... | 05/13/2008 |
| 7372040 | Neutron detector with layered thermal-neutron scintillator and dual function light guide and thermalizing media A broad spectrum neutron detector has a thermal neutron sensitive scintillator film interleaved with a hydrogenous thermalizing media. The neutron detector has negligible sensitivity to gamma rays and produces a strong and unambiguous signal for virtually all neutro... | 05/13/2008 |
| 7351982 | Portable nuclear material detector and process A portable, hand held, multi-sensor radiation detector is disclosed. The detection apparatus has a plurality of spaced sensor locations which are contained within a flexible housing. The detection apparatus, when suspended from an elevation, will readily assume a su... | 04/01/2008 |
| 7335890 | Method and apparatus for detecting atomic particles An atomic particle detection assembly includes at least one atomic particle detector positioned within a first chamber having a first operating pressure. The assembly also includes at least one junction apparatus coupled to the at least one atomic particle detector.... | 02/26/2008 |
| 7335891 | Gamma and neutron radiation detector A sensing element or detector activated by radiation comprising a first scintillator activated by gamma radiation; and a neutron sensing layer comprising a second scintillator activated by neutron radiation. ... | 02/26/2008 |
| 7295650 | Method for operating a primary beam stop A method for operating an X-ray or neutron-optical system and beam stop comprising an X-ray or neutron source (1) from which corresponding radiation is guided as a primary beam (2) to a sample (4) under investigation, with an X-ray or neutron de... | 11/13/2007 |
| 7294840 | Apparatus and method for reducing microphonic susceptibility in a radiation detector The invention provides a system for removing or minimizing microphonic noise from a radiation detector signal, such as from a neutron detector, without creating excessive false counts in the electronics that count the radiation events. The system solves the micropho... | 11/13/2007 |
| 7277521 | Detecting special nuclear materials in containers using high-energy gamma rays emitted by fission products A method and a system for detecting the presence of special nuclear materials in a container. The system and its method include irradiating the container with an energetic beam, so as to induce a fission in the special nuclear materials, detecting the gamma rays tha... | 10/02/2007 |
| 7268353 | Measuring the moisture content of plutonium oxide canisters A process for measuring the moisture content in a quantity of PuO2 powder. The process detects the content of thermal neutrons emitted by the quantity of PuO2 powder and then deduces its moisture content from a value of the detected content ass... | 09/11/2007 |
| 7265359 | Method and device for detecting fast neutrons A method of detecting fast neutrons of energy greater than 5 MeV is provided. The method includes providing a neutron detector including a plate having plurality of detection sites disposed thereon which produce an electron output. The neutron detector is directly c... | 09/04/2007 |
| 7247857 | Method and an apparatus for detecting water on a ship's deck This invention relates to an apparatus for detecting hydrogeneous material on a ship's deck comprising a neutron source located below the surface of the ship's deck and emitting fast/energy-rich neutrons, and a detector device that is located below the surface of th... | 07/24/2007 |
| 7244947 | Neutron detector with layered thermal-neutron scintillator and dual function light guide and thermalizing media A broad spectrum neutron detector has a thermal neutron sensitive scintillator film interleaved with a hydrogenous thermalizing media. The neutron detector has negligible sensitivity to gamma rays and produces a strong and unambiguous signal for virtually all neutro... | 07/17/2007 |
| 7238951 | Two-dimensional ionising particle detector A two-dimensional ionising particle detector including a matrix of detecting fibers, each detecting fiber forming a pixel of the detector. Each detecting fiber is composed of a glass capillary filled with a liquid scintillator for which the chemical composition is c... | 07/03/2007 |
| 7230250 | Real-time self-networking radiation detector apparatus The present invention is for a radiation detector apparatus for detecting radiation sources present in cargo shipments. The invention includes the features of integrating a bubble detector sensitive to neutrons and a GPS system into a miniaturized package that can w... | 06/12/2007 |
| 7223979 | Radiation dosimeter system An improved radiation dosimeter device in an improved radiation dosimeter system provides a DC analog output voltage that is proportional to the total ionizing dose accumulated as a function of time at the location of the dosimeter in a host spacecraft, so as to ope... | 05/29/2007 |
