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JP4272478B2 |
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JP2009115818A |
To provide a neutron image detector excelling in position resolution of 500 microns or less and position uniformity of neutron sensitivity.The neutron image detector with high neutron detecting position resolution is achieved by constitu...
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JP4246833B2 |
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JP4214176B2 |
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JP4195522B2 |
Apparatus for determining the density of underground formations surrounding a borehole, such as a wireline logging tool or a logging-while drilling tool, includes a neutron source for irradiating the formations from within the borehole a...
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JP4189505B2 |
To enable a critical accident to be detected by a single type of detector by achieving sensitivity to neutrons as well as sensitivity to γ rays and by detecting both radiations of γ rays and neutrons without any difference. The critica...
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JP2008281359A |
To provide a manufacturing method of a neutron detector capable of coping with miniaturization.A neutron-sensitive material film 24 is formed on the inner circumferential surface of a cylindrical metal plate 23. The metal plate 23 is cut...
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JP2008281568A |
To provide an anode wire having high electric resistance, smooth surface finish, high corrosion resistance, and high tensile strength.A radiation detector 100 having the anode wire 120 made of an amorphous metal alloy includes a cathode ...
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JP4178745B2 |
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JP4151935B2 |
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JP4150831B2 |
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JP4124776B2 |
A method for measuring high-energy radiation flux includes applying a positive voltage to electrodes in an ion chamber filled with a gas capable of forming charged ions by a high-energy radiation, measuring a positive ion current signal ...
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JP4110957B2 |
The ionization radiation detector has conductor tubes (18) in parallel with a gas mixture under pressure. There is a conductor wire (28) at the center of each tube at a set voltage. The ionizing radiation is directed orthogonally to the ...
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JP4098469B2 |
To accurately measure an output of a nuclear fusion reactor without being influenced by a gap of a plasma position, thermal load, nuclear heat generation, electromagnetic stress, electromagnetic noise and the like. The device comprise a ...
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JP4091148B2 |
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JP4092399B2 |
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JP4077728B2 |
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 cont...
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JP2008089310A |
To efficiently measure the intensity of radiation of neutrons etc. by a simple constitution.A radiation measuring apparatus 10 comprises a measuring container 14 in which a measuring chamber 13 for installing an object to be measured 11 ...
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JP4064009B2 |
There is provided a radiation detector capable of discriminating a kind of rays in radiation. The radiation detector includes a scintillator and a discriminator. The scintillator scintillates depending on radiation and generates a first ...
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JP4047298B2 |
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JP2008503742A |
The present invention relates to methods and systems for using photofission to investigate articles that potentially contain radioactive elements. The article is irradiated by a beam of electrons of sufficient energy, and those electrons...
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JP2008026195A |
To provide an apparatus of measuring a neutron intensity distribution for discriminating a gamma ray or the like of a background and measuring images of neutrons by a simple apparatus composition.The apparatus of measuring neutron intens...
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JP4044315B2 |
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JP2007509345T5 |
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JP4013563B2 |
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JP3985941B2 |
To provide a radiation detector, in which a plurality of radiation detectors can be used side by side and whose high detection efficiency can be ensured. The radiation detector comprises a scintillator which is arranged and installed on ...
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JP3976772B2 |
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JP2007524104A |
An electronic diagnosis circuit, having a detection system for digital data corresponding to detected pulses and an amplitude measuring system (24), includes a pulse rejecter (25) that is designed to reject any pulses in the detected dig...
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JP3959188B2 |
To provide a radiation detector whose energy resolution is not lowered although a large-area semiconductor crystal is used, whose structure is simple and which is manufactured easily. Strip-shaped anodes 3a to 3e and strip-shaped auxilia...
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JP3960232B2 |
To provide a compact and lightweight neutron detector capable of measuring the dose and the dose rate of neutrons, and estimating the energy thereof. The neutron detector comprises a medium to fast neutron detection unit 4 to detect neut...
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JP3958069B2 |
To improve noiseproofness in pulse measurement and Campbell measurement using digital processing. In this device, a desired count value is obtained by passing the output pulse of a radiation sensor 1 through an A/D converter 3 to obtain ...
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JP3957763B2 |
An apparatus for detecting neutrons includes a cerium activated scintillation crystal containing 10B, with the scintillation crystal emitting light in response to alpha particles emitted from the 10B(n, alpha )Li* reaction. The apparatus...
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JP2007183149A |
To detect a high-intensity neutron flux, prevent operation from becoming unstable when a large number of neutrons are irradiated, and measure a neutron flux directly.The neutron detector using a neutron scintillator as a neutron detectio...
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JP3940961B2 |
The present invention concerns a monitor for measuring both the gamma spectrum and neutrons emitted by a spent nuclear fuel pin or pin assembly. According to the invention, it comprises a lead block (1) presenting a front face (8) intend...
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JP2007163352A |
To provide a liquid level meter and a measuring technique of liquid level capable of measuring precisely height of liquid levels within measured objects, such as vessels and pipe arrangements and the like of various materials and shapes ...
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JP3938059B2 |
To provide a neutron detector capable of detecting even neutrons with the energy of ≥ 50 MeV with high accuracy, and discriminating whether or not the detected neutron is obtained from cosmic rays. Two sets of a 3He neutron counter 11 ...
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JP2007516432A |
A semiconductor substrate incorporating a neutron conversion layer (such as boron-10) that is sensitive enough to permit the counting of single neutron events. The substrate includes an active semiconductor device layer, a base substrate...
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JP2007509345A |
A neutron detection device includes a neutron conversion layer in close proximity to an active semiconductor layer. The device is preferably based on the modification of existing conventional semiconductor memory devices. The device empl...
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JP3896242B2 |
To provide a control rod drawing monitoring apparatus and a nuclear reactor output control apparatus using it, capable of inhibiting generation of control rod withdrawal inhibition caused by the swaying of a neutron bundle signal. The co...
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JP2007507113A |
A system for measuring a thermal neutron emission from a neutron source is provided. The system employs a detector utilizing a plurality of doped pBN layers, wherein the doped pBN layers are doped with at least one dopant across an a-b p...
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JP3880855B2 |
To obtain an image having appropriate concentration corresponding to a specimen even if contrast in a radiation image is increased, and to reliably and effectively obtain much information by one-time shooting according to the specimen. T...
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JP3881399B2 |
To simplify operation, improve the space factor, maintainability in a reactor building and the reliability of components in the reactor building. This device measures the heat of radiation absorption with a plurality of fixed type sensor...
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JP3872826B2 |
PURPOSE: To detect a process even up to slow criticality, together with fast criticality, as early as possible and properly. CONSTITUTION: In this criticality warning system, a trip signal is transmitted from a radiation detector 10 laid...
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JP3864387B2 |
To provide a differential-integral type radiation measuring method based on a combination of a method using stimulable phosphor for always monitoring radiation and a method measuring radiation while integrating it for always monitoring r...
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JP2006337136A |
To achieve excellent dosimetry of sensitive characteristics to neutrons of a wide range energy.A thermal neutron detector 20 detects thermal neutrons flying from an external field, and thermal neutrons incident by moderating/reflecting o...
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JP2006329793A |
To provide a portable neutron dosimetric device having excellent energy characteristic.A detection part 100 has a constitution wherein a human body side detector 110A and an incidence side detector 110B are buried in a moderator block 12...
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JP2006526791A |
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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JP3837529B2 |
To provide a radiation detector having sensitivity vastly improved as compared with conventional devices so as to enable measurement from environmental levels and having weight reduced so as to enhance convenience when it is carried and ...
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JP2006284589A |
To provide an improved monitoring method of radiation.A dataset, including the recording of an event with the time of the event and/or the index of a detector for detecting the event, is acquired, and a first analyzed dataset, obtained b...
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JP2006275602A |
To provide a high-sensitivity measurement method for radiation dosages caused by high-energy neutrons, photons, and muons, having a wide energy range so far being immeasurable even by using a plurality of instruments.A beam of light emit...
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