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JP3454557B2 |
PURPOSE: To provide a device for simultaneously selecting and detecting neutron and X-ray or gamma-ray photon of which two situations can be completely separated, by using a single spectrometry system having two energy channels, by a mea...
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JP3447434B2 |
PURPOSE: To provide a reactor output measuring device capable of measuring the momently changing output of a reactor at the optional time with a γ-thermometer. CONSTITUTION: This reactor output measuring device is provided with a γ-the...
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JP2003248061A |
To provide a scintillator that has a very short fluorescent life time and high neutron capture efficiency and at the same time, is composed of light elements as a scintillator for neutron detection that requires high counting rate, a wid...
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JP3442598B2 |
To provide a fixed in-core instrumental system capable of surely and accurately calibrating a fixed gamma thermometer. In a fixed in-core instrumental system comprising a plurality of neutron detectors 6 detecting local outputs within a ...
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JP2003232862A |
To provide a neutron detector capable of stably measuring neutrons and enabling an electrode member to be surely coated with a coating material including a fissionable material and its parent nuclide.The principal surface of at least one...
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JP2003227876A |
To provide a neutron detector for fast neutrons and intermediate neutrons which is little in erroneous counting operation due to a shock.A semiconductor detecting element used for the neutron detector is not one detecting element, but it...
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JP2003218380A |
To provide a neutron detector which has extremely increased sensitivity to thermal neutrons.A pBN neutron detector of multiple pBN layers has a crystalline lattice structure comprising a geometry having two opposed edge surfaces aligned ...
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JP2003215247A |
To provide a measuring service method capable of quickly measuring neutron fluence with precision, for evaluating group or personal dose of neutron radiation in an emergency.Under a service contract with a facility possible to generate n...
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JP2003194941A |
To obtain a dosimeter element for a neutron measurement by which neutrons can be measured in a wide range region, in which the adhesion property of a radiator to a solid for track detection is maintained and whose sensitivity deteriorati...
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JP2003194955A |
To provide a neutron-detecting apparatus that can prevent detection sensitivity from being changed even if a neutron is received.A detection section 12 is equipped with an external electrode 22 having a neutron-sensitive substance 23 and...
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JP2003183637A |
To provide a neutron scintillator not containing heavy metals, that is indispensable for realizing such a scintillation detector, which has low sensitivity to gamma rays but enough counts high-intensity neutrons.This neutron scintillator...
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JP2003167062A |
To detect the neutron position with high resolving power in simple constitution using 3He gas sealed in a container.This neutron position detector includes a sealed space container 42 where mixed gas containing 3He gas and additive gas i...
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JP3411580B2 |
PCT No. PCT/GB95/01724 Sec. 371 Date Mar. 20, 1998 Sec. 102(e) Date Mar. 20, 1998 PCT Filed Jul. 21, 1995 PCT Pub. No. WO96/04572 PCT Pub. Date Feb. 15, 1996An ionizing radiation detector comprises a flat substrate having a plurality of ...
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JP2003149378A |
To provide a neutron measuring device capable of easily determining that abnormality is present by detecting and displaying the abnormality before a mean-square measurement function works when the abnormality (trouble of a constituent el...
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JP3407032B2 |
To provide a radiation detector of which the sensitivity is substantially improved more than a conventional device so as to perform measurements from an environmental level and which is made lightweight for heightening portability in use...
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JP2003139861A |
To provide a detector that has less aging and deterioration, has a long life and is reliable, and can be manufactured easily.The detector is composed by accommodating a cable section 9, an airtight seal section 18 for inserting a signal ...
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JP2003115804A |
To provide a neutrino communication system, in which information can be transmitted satisfactorily for a long distance.The communication system is composed of a neutrino transmitter 1 for transmitting neutrino flux added with information...
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JP3390751B2 |
To provide a 'double energy' recording technology operated by a single sheet phosphor screen in the single shot X-ray exposure that can avoid problems of wrong recording when patterns of high- and low-energy level X rays are recorded and...
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JP2003075540A |
To non-destructively and independently measure and estimate each radioactive isotope from the outside of a reprocessing waste in the radioactivity measurement of the reprocessing waste.The radioactive waste is made into a fused solid sep...
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JP2003066185A |
To provide a method for replacing a radiation detector which makes it possible to smoothly replace a radiation detector incorporated with a calibration tube with one that has a structure incorporated with a gamma-ray exothermic element w...
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JP2003057385A |
To provide a radiation detection device having improved reliability. This radiation detection device is equipped with a radiation detection element 14 coated with an insulating member 17 and moving inside a guide tube 12, and a signal ca...
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JP3378428B2 |
To provide an LPRM(local power region monitor) detector assembly capable of suppressing temperature rise around in-core housing. A plurality of LPRM detectors 6 measuring neutron in power region of a reactor are contained in an LPRM dete...
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JP3358617B2 |
To enable dose equivalent response by arranging a converter and a proton radiator on a semiconductor detection element, making them to react with thermal neutrons and fast neutrons respectively, generating charge particles, and covering ...
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JP3358817B2 |
The nuclear imaging system includes an imaging detector close to a collimator. The imaging detector includes several detection modules, each with several elements in. The detections elements produce electrical pulses of amplitude indicat...
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JP2002341046A |
To provide a neutron detector unit, neutron detection method and neutron monitoring system having directional sensitivity.In this detector unit comprising a neutron detector and one or more neutron effectuating materials, the neutron eff...
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JP2002341045A |
To provide a neutron detector, neutron detecting method and neutron monitoring method having preciseness improved in the point of counting rate, and the more precise evaluation of a material as the result.A neutron decelerating material,...
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JP2002333482A |
To allow luminous energy to be increased since emission light is propagated to an observed face without generating a loss in an inside of a converter even when the converter is thickened, by separating a portion for reacting with a fast ...
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JP3349234B2 |
PURPOSE: To prevent a false alarm due to noise so as to enable an alarm to be issued precisely at the proper time by calculating the self-powered concentration spectrum of a frequency band adapted to a subject for measurement according t...
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JP2002311147A |
To solve the problem that a proper neutron spectrum cannot be found because the measuring condition of each neutron detector is not identical when the size of the neutron detector having the different thickness of a moderator used to mea...
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JP3329859B2 |
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JP2002270887A |
To provide a semiconductor device which is suitable for detecting neutrons, is small-sized and low in manufacturing cost, and to provide a method for manufacturing the same.The semiconductor device comprises a boron-containing layer 4 co...
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JP2002528727A |
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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JP3300496B2 |
PURPOSE: To reduce stray capacitance between cables without affecting the detection signal and improve the resistance to noise in wide frequency range. CONSTITUTION: In a radiation measuring system for measuring radiation dose by sending...
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JP3288821B2 |
PURPOSE: To continuously monitor the local output without disabling the operation even when a plurality of detectors are bypassed. CONSTITUTION: Neutron flux signals outputted from LPRM detectors 3 arranged around control rods 2 in a rea...
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JP2002116260A |
To provide a method for generating neutrino electromotive force by utilizing an electron system that an organism posseses, and for easily detecting a low-energy neutrino.In water or water solution 3, where at least a pair of electrodes 1...
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JP3274166B2 |
PURPOSE: To provide a neutron detector output monitor influenced little by noise for performing the digital processing of neutron detector output and specifically eliminating a frequency band including noise so as to obtain output of qui...
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JP3273875B2 |
To uniformize the sensitivity over a wide energy range in a portable neutron detecting device for detecting a neutron. An opening 24 is formed on the human body side in a thermal neutron shield container 22, a thermal neutron scattered i...
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JP2002508522A |
(57) [Summary] The present invention considers the frequency distribution of single, double and triple neutron emission events from the sample being analytically evaluated. Each count rate is equalized to a mathematical function of spont...
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JP2002071816A |
To provide a two-dimensional radiation detector and a neutron image detector combining optical fiber with a scintillator, a liquid scintillator or a phosphor.Grooves are horizontally and vertically formed at predetermined intervals on a ...
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JP3263154B2 |
PURPOSE: To accurately determine the relation between the counting rate and the nuclear fuel material density with a real machine simulating/calibrating device by using the isotope nuclide composition ratio of a nuclear fuel material as ...
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JP2002062360A |
To speed up and obtain a high position resolution of a one-dimensional or a two-dimensional position detection type neutron measurement system, having a mixed gas consisting essentially of helium-3 sealed in a microstrip type or a pixel-...
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JP2002040147A |
To provide a neutron detector operative with low power consumption, used in dosimeters for the personal exposure supervision of persons working or living every day in neutron generating facilities, such as nuclear reactor facilities and ...
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JP2002503342A |
The invention relates a device for measuring the relative proportions of uranium and plutonium in a radioactive package (16), having:a source of photons (10) for irradiating the package,at least one delayed neutron detector (18) able to ...
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JP3249339B2 |
PURPOSE: To obtain an active neutron multiple measuring apparatus which reduces an error in the measured value of a transuranium-element existence amount caused by the skewness of a nuclear-fission reaction coefficient inside an object t...
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JP2002014171A |
To provide an He-3 counter for neutron for measuring scattered or transmitted neutron rays with high performance, in order to nondestructively and rapidly detect the content of moisture (amount of hydrogen) in a material and defects or t...
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JP2002006053A |
To enable to detect the position of a specified radiation and the movement state even if a detector is placed at a high radiation atmosphere.Multiple radiation detector probes are distributed and placed in different directions to the ext...
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JP2001349951A |
To provide a means for measuring neutrons by using a germanium semiconductor detector.Boron and cadmium causing neutron nuclear reaction to emit γrays are mixed in polyethylene having a neutron slowing-down action to cover the germanium...
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JP2001343464A |
To provide a neutron measurement jig whose maintenance control is not required and which measures neutrons, when the neutron is discharged abnormally.A gold foil 3 is housed between an upper-part acrylic cylinder 1 and a lower-part acryl...
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JP2001525933A |
In a method and apparatus for determining neutron spectra using at least two neutron detectors which provide integral counting rates from which the spectrum of a neutron radiation can be approximated, and which consist each of a semicond...
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JP2001318151A |
To provide an imaging system which includes the image head of a semiconductor gamma camera replacing an Angerscintillation camera, a signal processor, a data gathering system, and an image processing computer.The image head includes a de...
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