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JPH0792294A |
PURPOSE: To reduce the occupied area of a system by a method wherein, on the basis of installation positional information which is common to every LPRM and every thermodetector, every local output which is detected by every LPRM and ever...
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JPH0712950Y2 |
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JPH0716024B2 |
PURPOSE:To form layers in high concentration of hydrogen atoms on an element for manufacturing a radiation detector detecting fast neutrons on high sensitivity by a method wherein crystalline semiconductor element provided with a junctio...
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JPH07501624A |
A process measurement system that utilizes fast neutron backscattering for measuring density, level, and interfaces of substantially non-hydrogenous materials. The present invention substantially expands the use of backscattering technol...
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JPH06103347B2 |
A system and method is described for obtaining a spatial characterization of a particle beam, including the beam direction, position, divergence, aberrations and intensity profile. A mechanism is also provided for adjusting the beam prop...
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JPH06101577B2 |
A semiconductor-based radiation-detector element particularly adapted to neutron detection, and the method for making the same, in which a high sensitivity single-crystal semiconductor substrate has diffused therein at-least-one region o...
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JPH06331570A |
PURPOSE: To obtain a clear image with a high resolution using a high-speed neutron. CONSTITUTION: An image recording body 5 where a film-shaped light emitting converter 3 and a sensitized film 4 are adhered is laid out at the rear of a s...
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JPH06324157A |
PURPOSE: To prevent the abrasion of a receiving board and economize labor by installing a plurality of V-shaped receiving boards in which each turnable resin ball is incorporated, on a table which is shiftable in the horizontal direction...
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JPH06308281A |
PURPOSE: To improve the reliability of the position information of a detector with a simple structure. CONSTITUTION: Marker materials 21-1 through 21-n locally changing the neutron flux level are arranged at the prescribed interval on or...
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JPH0639351Y2 |
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JPH06508926A |
PCT No. PCT/FR92/00647 Sec. 371 Date May 9, 1994 Sec. 102(e) Date May 9, 1994 PCT Filed Jul. 7, 1992 PCT Pub. No. WO93/01507 PCT Pub. Date Jan. 21, 1993.The simultaneous selective detection of neutrons and X or gamma photons is disclosed...
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JPH06258449A |
PURPOSE: To allow high sensitivity measurement over a wide energy range while reducing the size and weight by constituting a neutron measuring equipment of a plurality of mutually coupled ionization chambers having a common current colle...
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JPH06242252A |
PURPOSE: To enhance the reliability against vacuum leakage, to reduce the number of radiated parts and to prevent the damage of a carbon membrane due to the erroneous operation of a valve by reducing the number of parts to the connection...
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JPH06507717A |
A neutron detector includes a constituent or added sensitizer which enhances the detector's response to neutrons, of a preselected energy. Also disclosed are analytical techniques employing the detector, including a double resonance tech...
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JPH0668547B2 |
A method for detecting and correcting for isotope burn-in during long-term neutron dosimetry exposure preferably with duplicate solid state track recorder fissionable deposits, including a first, fissionable deposit of lower mass to quan...
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JPH0668963B2 |
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JPH06235771A |
PURPOSE: To enhance operating efficiency of a reactor by improving reliability for monitoring the reactor and then relaxing the restriction im terms of operation of the reactor due to the limitation in the number of allowable bypasses an...
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JPH06222185A |
PURPOSE: To shorten the response time from detection of partial output to the output of a signal to stop pulling of control rods by inputting partial outputs detected by each LPRM unit to an APRM unit and an RBM unit in parallel. CONSTIT...
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JPH06214038A |
PURPOSE: To continuously and quantitatively evaluate Pu concentration and 244Cm concentration, continuously monitor critical safety, and prevent criticality. CONSTITUTION: The signal of the neutron detector of a process equipment 13 is i...
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JPH0654355B2 |
A method for producing ultralow-mass fissionable deposits for nuclear reactor dosimetry is described, including the steps of holding a radioactive parent until the radioactive parent reaches secular equilibrium with a daughter isotope, c...
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JPH06194452A |
PURPOSE: To display a failed neutron detector for a measuring personnel by detecting the neutron detector which failed due to deterioration and failure in a system for measuring a neutron flux by processing the detection signal of the ne...
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JPH06180370A |
PURPOSE: To enhance sensitivity greatly by loading boron and proton radiators to the surface and rear of a semiconductor detecting element thereby facilitating the detection of α-rays and proton rays, produced through interaction with n...
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JPH06138243A |
PURPOSE: To decrease the quantity of radiation toward a detecting portion by varying the positions of a radiation shielding member and a neutron detecting portion relative to a reactor core using a drive. CONSTITUTION: The neutron detect...
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JPH0636434B2 |
PURPOSE:To obtain a solid neutron detector having high detection efficiency, position resolving power and a high response time and capable of being miniaturized as a whole, by forming the neutron detector by using a boronic compound semi...
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JPH06123793A |
PURPOSE: To grasp the neutron flux distribution in the whole reactor in a short time by indicating the neutron flux distribution in the whole reactor roughly in a graph. CONSTITUTION: A data processing part 4 outputs moving command throu...
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JPH0631791B2 |
Local power range monitor strings (Fig. 2A) typically including four vertically spaced monitoring sites are provided in the core of a boiling water nuclear reactor. Each monitoring site includes a conventional local power range detector ...
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JPH0631792B2 |
In a method and apparatus for reducing frequency burst noise and noise spikes accompanying a random pulse signal, pulses with an amplitude above a high threshold or below a low threshold are eliminated, with the remaining pulses of inter...
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JPH0627859B2 |
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 c...
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JPH0627860B2 |
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JPH0613510Y2 |
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JPH0659045A |
PURPOSE: To obtain a detector assembly for reactor containing a platinum detector segment distributed in axial direction in a reactor assembly and a vanadium detector segment arranged in spatially coincident relation in the same reactor ...
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JPH0616111B2 |
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JPH0616110B2 |
PURPOSE:To remove effect of a leakage electric field of an electrostatic deflection plate with the ion passage electrode length thereof sufficiently larger than an interval of the deflection plate, by providing an acceleration electrode ...
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JPH0616112B2 |
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JPH0616109B2 |
PURPOSE:To achieve a higher S/N ratio in measuring sensitivity, by interrupting neutral particles after passing through a stripping cell to remove effect due to a beta<-> decay of tritium. CONSTITUTION:A vacuum container 1 is connected t...
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JPH0614980U |
[Constitution] The holding device for the in-line neutron detector of the present invention is fixed to the inner wall of the tip of the detector guide tube 6 which is inserted into the high radiation dose area 17 through the wall 15 fro...
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JPH0614979U |
[Constitution] In the gas introduction device 8A of the neutral particle analyzer of the present invention, the exhaust pipe 17 is provided in the pipe 15 between the stop valve 9 and the variable opening valve 7 provided in the gas supp...
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JPH0634763A |
PURPOSE: To provide a radioactive ray detector having an individual exposure dose rate meter sensitive for γ-rays and neutron rays, which is located in a container having a size equal to that of a γ-ray detector, in which should be com...
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JPH069255B2 |
PURPOSE:To obtain an element capable of detecting a thermal neutron beam with high sensitivity by a method wherein a boron film is deposited on one face of a semiconductor substrate by a plasma CVD method using a gas of diborane containi...
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JPH068863B2 |
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JPH068898B2 |
A nuclear excitation laser type intra-reactor neutron flux measuring system of this invention is comprised of a laser oscillator filled with a nuclear exciting gas such as 3He, KrF or XeF, mounted on the tip of a control rod. The nuclear...
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JPH06791Y2 |
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JPH05346471A |
PURPOSE: To make the precise measurement of a neutron yield possible even in the case where disruption occurs by calculating an integration value of the number of the neutrons generated from the start of discharge up to the time of start...
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JPH05333158A |
PURPOSE: To provide a radiation detecting device detecting neutron rays at high sensitivity and high position precision, capable of detecting X-rays, and capable of discriminating these radioactive rays. CONSTITUTION: A radiation inciden...
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JPH0584478B2 |
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JPH05281364A |
PURPOSE: To obtain an instrument for measuring neutron dose equivalent which can measure a wide range of neutrons from them neutrons to fast neutrons with high sensitivity and has a portable size and weight. CONSTITUTION: A first and sec...
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JPH0577277B2 |
PURPOSE:To facilitate the integration and compaction of devices for a control center and contrive concentrated monitoring of multichannel signals by operating and processing reactor output on the basis of optical digital data automatical...
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JPH05273355A |
PURPOSE: To obtain an ion/neutral particle counting device which can easily separate and count ion particles or neutral particles and can be reduced in size. CONSTITUTION: The title counting device is constituted of a charged particle de...
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JPH0575359B2 |
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JPH0575358B2 |
A method for correcting for the effect of isotope burn-in in fission neutron dosimeters wherein two quantities are measured in order to quantify the "burn-in" contribution, namely PZ min ,A min , the amount of (Z min , A min ) isotope th...
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