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| Number | Title | Issue Date |
| 7351952 | Apparatus for controlling neutron beam and method for manufacturing the same An apparatus for controlling a neutron beam includes a plurality of columnar prisms 1 that are made of a material having a refractive index of less than 1 for a neutron beam, and are arranged so as to be multi-layered. The columnar prisms 1 each have a... | 04/01/2008 |
| 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 |
| 7214948 | Neutron optical component for the small angle neutron scattering measuring technique A high measuring resolution along with a large irradiation surface and a high beam intensity are required for structural analysis of material according to the small angle neutron scattering measuring technique. However, with known diaphragm collimators, the necessar... | 05/08/2007 |
| 6765978 | Neutron spectrometer with titanium proton absorber A neutron spectrometer is provided by a series of substrates covered by a solid-state detector stacked on an absorbing layer. As many as 12 substrates that convert neutrons to protons are covered by a layer of absorbing material, acting as a proton absorber, with th... | 07/20/2004 |
| 6703620 | Rotational-translational fourier imaging system This invention has the ability to create Fourier-based images with only two grid pairs. The two grid pairs are manipulated in a manner that allows (1) a first grid pair to provide multiple real components of the Fourier-based image and (2) a second grid p... | 03/09/2004 |
| 6580080 | Neutron beam controlling apparatus, and neutron energy measuring apparatus A neutron beam controlling apparatus includes a plurality of multilayered plate members, each having on one or both of its surfaces, one or more minute protruding portions. Each of the protruding portions is a long and narrow protrusion extending in an ar... | 06/17/2003 |
| 6577697 | Field analysis of geological samples using delayed neutron activation analysis A system and method for rapidly analyzing elemental abundances in rock or soil samples (14) under field conditions. The system uses a portable neutron source (12) to allow neutron activation analysis of elements having identifiable radioactive decay chara... | 06/10/2003 |
| 6445772 | High precision grids for neutron, hard X-ray, and gamma-ray imaging systems Fourier telescopes permit observations over a very broad band of energy. They generally include synthetic spatial filtering structures, known as multilayer grids or grid pairs consisting of alternate layers of absorbing and transparent materials depending... | 09/03/2002 |
| 6345080 | Measurement device for determining boron concentration The boron concentration can be measured without intervention into the cooling circuit of a nuclear power station. A mobile emitter and a mobile receiver are provided, with the interposition of at least one coolable region, for placement on a coolant-carry... | 02/05/2002 |
| 6134289 | Thermal neutron detection system According to the present invention, a system for measuring a thermal neutron emission from a neutron source, has a reflector/moderator proximate the neutron source that reflects and moderates neutrons from the neutron source. The reflector/moderator furth... | 10/17/2000 |
| 5581079 | Epithermal neutron detector having enhanced efficiency A neutron detector sensitive principally to epithermal neutrons is disclosed. In a preferred embodiment of the invention, a neutron counter is substantially surrounded by a reflector composed of material having a high neutron scattering cross section. The... | 12/03/1996 |
| 5386114 | Detector for activity direction of magma Apparatus for helping predict the occurrence of an earthquake or a volcanic eruption by detecting and recording the direction of a neutron flow generated in the earth's magma and the intensity of the neutron activity.... | 01/31/1995 |
| 5278418 | Luggage explosive detector A method for detecting the presence of a predetermined amount of oxygen and nitrogen in a luggage type container as a screening technique for determining the presence of an explosive in the container. Generating and accelerating a beam of monoenergetic pr... | 01/11/1994 |
| 5278417 | High energy neutron dosimeter A device for measuring dose equivalents in neutron radiation fields. The device includes nested symmetrical hemispheres (forming spheres) of different neutron moderating materials that allow the measurement of dose equivalents from 0.025 eV to past 1 GeV.... | 01/11/1994 |
| 5141709 | Excore power level detector assembly for neutron flux monitoring system An excore neutron flux power level detector assembly includes a neutron flux detector subassembly and a moderator subassembly having the form of a dual-wall canister of annular cross-section for receiving the detector subassembly in coaxial and telescopin... | 08/25/1992 |
| 5028789 | System and apparatus for neutron radiography An apparatus for use in neutron radiography has a convergent collimator of moderator material joined coaxially to a divergent collimator made of neutron-absorbing material. An aperture is formed between the collimators. The divergent collimator substantia... | 07/02/1991 |
| 5016267 | Instrumentation for conditioning X-ray or neutron beams In one embodiment, an x-ray neutron instrument includes an x-ray or neutron lens (10) disposed in a path for x-rays or neutrons in the instrument. The lens (10) comprises multiple elongate open-ended channels (12) arranged across the path to receive and p... | 05/14/1991 |
| 4938916 | Flux enhancement for neutron radiography inspection device A neutron radiography system having a high energy neutron generator (100) of the type comprising an ion accelerator (106) and a tritium target (110) located downstream of the accelerator. The generator is disclosed in a housing (22) containing a moderator... | 07/03/1990 |
| 4853550 | Device for irradiating an object with a transportable source generating thermal neutrons A device for irradiating an object, includes a source mount, a source disposed on the source mount for generating thermal neutron rays, a moderator surrounding the source, a collimator having a ray inlet side with an inner surface and at least one funnel-... | 08/01/1989 |
| 4794256 | Fast neutron process measurement system A process measurement system for measuring levels, interfaces and other characteristics related to products positioned between a fast neutron source and a detector that directly measures the transmitted fast neutrons. The system far exceeds the limitation... | 12/27/1988 |
| 4760252 | Well logging tool with an accelerator neutron source In the illustrative embodiments of the invention disclosed, a neutron porosity well logging tool includes a D-T neutron accelerator, a fast-neutron monitor for monitoring accelerator output, near and far epithermal neutron detectors for deriving a primary... | 07/26/1988 |
| 4757209 | Drive for a neutron chopper In order to make possible precisely controlled and reliable operation of the rotors of a neutron chopper each rotor is to be driven by a hysteresis motor, whose rotor is in the form of a hollow cylinder. The attachment of each drive rotor to the one end o... | 07/12/1988 |
| 4623508 | Wide range flux monitor assembly A wide range flux monitoring assembly is provided for in-core neutron flux monitoring in a nuclear reactor vessel. The assembly comprises a fixed in-core power range monitor and a fixed in-core extended range start-up monitor which are connected to signal... | 11/18/1986 |
| 4599515 | Moderator and beam port assembly for neutron radiography A moderator and beam port assembly is designed particularly for use with an accelerator source of fast neutrons to provide a collimated beam of thermal neutrons directed toward an object position for neutron radiography. A central moderator of solid hydro... | 07/08/1986 |
| 4590370 | Epithermal neutron die-away logging A borehole logging tool includes a pulsed source of fast neutrons and a neutron sensitive counter. A neutron filter encases the counter and has a thickness to permit the longest possible delay time following each burst of fast neutrons before epithermal n... | 05/20/1986 |
| 4582999 | Thermal neutron collimator In a system for generating thermal (14 MeV) neutrons containing an ionic accelerator, a novel thermal neutron collimator for producing a beam of collimated thermal neutrons is disclosed. The apparatus includes a substantially hollow collimator tube (10) h... | 04/15/1986 |
| 4581532 | Directional epithermal neutron detector A directional epithermal neutron detector for use in well logging employs a plurality of neutron counters and a neutron moderating material. A first thermal neutron shield provides a cylindrical housing for the counters and moderating material. The counte... | 04/08/1986 |
| 4556793 | Epithermal neutron lifetime logging A radioactive borehole logging tool employs an epithermal neutron detector having a neutron counter surrounded by an inner thermal neutron filter and an outer thermal neutron filter. Located between the inner and outer thermal neutron filters is a neutron... | 12/03/1985 |
| 4543230 | Pulsed-neutron monochromator In one aspect, the invention is an improved pulsed-neutron monochromator of the vibrated-crystal type. The monochromator is designed to provide neutron pulses which are characterized both by short duration and high density. A row of neutron-reflecting cry... | 09/24/1985 |
| 4463266 | Neutron collimator A neutron collimator with an adjustable irradiation field for an effective neutron radiation source includes a protective radiation casing; a frame surrounded by the casing; a plurality of individual carrier arms mounted on the frame; a plurality of pairs... | 07/31/1984 |
| 4429411 | Instrument and method for focusing X-rays, gamma rays and neutrons A crystal diffraction instrument or diffraction grating instrument with an improved crystalline structure or grating spacing structure having a face for receiving a beam of photons or neutrons and diffraction planar spacing or grating spacing along that f... | 01/31/1984 |
| 4324979 | Variable neutron collimator A variable neutron collimator comprising at least three neutron absorbing blocks spaced from the position of a source of neutrons, each block having a surface remote from said position which is curved and concentric with said position, each block also hav... | 04/13/1982 |
| 4300044 | Method and apparatus for the analysis of chemical compounds in aqueous solution by mass spectroscopy of evaporating ions A method for analysis of chemical compounds comprising forming a fine droplet spray of a solution containing the compound to be detected and analyzed, electrically charging the spray droplets and allowing said spray to evaporate such that either ionized m... | 11/10/1981 |
| 4300054 | Directionally positionable neutron beam Disclosed is apparatus for forming and directionally positioning a neutron beam. The apparatus includes an enclosed housing rotatable about a first axis with a neutron source axially positionable on the axis of rotation of the enclosed housing but rotatio... | 11/10/1981 |
| 4286167 | Multi-element X-ray equalizing filter A filter for megavolt X rays has an absorbing member shaped to provide greater thickness for rays in the direction of higher intensity, e.g., the axis of the electron beam. A second absorbing member of a material of different atomic number is shaped to pr... | 08/25/1981 |
| 4278885 | Apparatus for measuring the concentrations of elements in a material by the capture gamma method The invention provides an apparatus for measuring the concentrations of elements in a material sample by the capture gamma method, said apparatus including a neutron source in the form of an isotope source or a neutron generator, a moderator surrounding t... | 07/14/1981 |
| 4266132 | Apparatus for controlling neutrons escaping from an elemental analyzer measuring gamma rays arising from neutron capture in bulk substances In an apparatus for neutron-capture-based on-line elemental analysis of bulk substances, the control of neutrons which escape from the volume in which the analyzed substance is placed improves accuracy and reduces potential radiation hazards. The apparatu... | 05/05/1981 |
| 4069421 | Device for localizing light phenomena The device comprises a photocathode for converting light phenomena to photoelectrons, means for focusing the photoelectrons emitted by the photocathode in the form of a large number of separate beams each corresponding to the photoelectrons emitted by a w... | 01/17/1978 |
