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JP01223384 |
PURPOSE: To obtain a signal having low noise level by providing two ionization chambers for passing a beam, a pair of high voltage capturing electrodes, and means for deriving an electric signal dependent on the beam position along a mea...
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JP01142483 |
PURPOSE: To prevent the breakage of a window of a gas flow type counter tube otherwise caused when atmospheric air is released inadvertently into a vacuum chamber, by forming a bypass path equipped with a gas check valve between the insi...
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JP01132037 |
PURPOSE: To make it possible to measure the absolute intensity of a particle beam over a wide range by employing a Faraday cup and a secondary electron multiplier element with their measurable ranges of particle beam intensity partially ...
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JP01093044 |
PURPOSE: To improve measuring accuracy by making the housing plate of an ionization chamber in a curved surface structure while being insulated from the open air by sealing. CONSTITUTION: An ion current flowing inside an ionization chamb...
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JP01093045 |
PURPOSE: To enable one counter to detect X-rays in the wide wavelength range at the optimum efficiency together with high wavelength selection capability by sequentially changing effective volume or pressure of gas for detection accordin...
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JP01081185 |
PURPOSE: To improve time delay in trigger discharge in vacuum by providing irradiation port at one part of a vacuum vessel as well as drawing out of the vacuum vessel while sealing an optical fiber therein, then irradiating at least one ...
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JP01063885 |
PURPOSE: To obtain a stable high-performance structure by constituting a detector assembly by fixing individual detector modules in a frame with a plurality of threaded tightening members and selectively arranging the modules. CONSTITUTI...
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JP01063887 |
PURPOSE: To provide a personal dose meter which is reduced in size and weight and can accurately measure the total dose and dosage rate of the user by providing the collecting electrodes of ion chambers directly one integrated circuits a...
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JP01053190 |
PURPOSE: To improve the accuracy of the reproducibility of plasma by measuring neutron particles and an accompanying background at the same time, and securely removing the background at the time of from the energy distribution. CONSTITUT...
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JP01052372 |
PURPOSE: To make neutral particles not get out from detectors on low energy side by electrically insulating one of a stripping cell and a vacuum chamber from the other and applying a constant voltage to it. CONSTITUTION: One of a strippi...
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JP01050357 |
PURPOSE: To form a conductive film on the surface of a sample, and prevent electrification in the range to be analyzed and enable mass detection high in analysis reliability by equipping a depositing means which forms a conductive film t...
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JP01043962 |
PURPOSE: To make it possible to distinguish the same mass number of ions and to carry out the qualitative and the quantitative analysis by using the result of the qualitative analysis by a spectrophotometer and the detected m/z (mass num...
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JP01003952 |
PURPOSE: To improve the output display precision of radioactive rays by circulating a temperature-controlled refrigerant around an unsealed ion chamber. CONSTITUTION: An ion chamber 11 is stored in a case 5, with its high-voltage electro...
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JP63318060 |
PURPOSE: To effectively prevent the incidence of ultraviolet rays or the like and correctly measure radioactive rays by forming a radioactive ray incidence window with titanium foil. CONSTITUTION: A radioactive ray incidence window 20 is...
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JP63274320 |
PURPOSE: To obtain tripping characteristics having high accuracy and high safety by shifting both end voltage of a current detecting resistor into a power circuit by a differential amplifier. CONSTITUTION: When currents are caused to flo...
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JP63205589 |
PURPOSE: To hold the sensitivity of a radiation detector stable even when it is used under high-temperature conditions by using a mixed gas of gaseous He and gaseous Ar as ionizing gas, and setting the weight mixing ratio of the gaseous ...
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JP63190241 |
PURPOSE: To perform neutron measurement in the radiation field containing neutrons and gamma-rays by changing the geometric shape of a compensating electrode to change the electrical effective volume formed with a signal electrode and th...
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JP63175327 |
PURPOSE: To enable compensation for a change of gas density in a counter tube by the use of a simple mechanism by installing a means in which a temperature of a liquid container is kept identical with that of a proportional counter tube....
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JP63168955 |
PURPOSE: To simplify the mechanism, by specifying the relation of the section area of a tube, the section area of a container, the atmospheric pressure, and the gas column in the container, and positioning the exhaust port to exhaust the...
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JP63167256 |
PURPOSE: To count electrons efficiently and stably against variations of measure ment conditions by selecting a 2nd grating voltage which is obtained by a grat ing voltage detecting means and provides the largest counted value, and a 1st...
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JP63086237 |
PURPOSE: To reduce the amount of floating capacity as well as to aim at abatement in microphonic noise and a high-frequency noise of a preamplifier, by forming either of a signal electrode plate or a high-tension impressing electrode pla...
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JP63040244 |
PURPOSE: To enable to confirm, with an ordinary measuring board, activation amount after the use of a detector by providing a neutron sensitive substance in such a way as to generate inside the detector a neutron source corresponding to ...
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JP62206757 |
PURPOSE: To make it very easy to manufacture a thin window, by forming a window material in a thin membrane at a surface of a protective plate, and then processing the protective plate into a specific form of a protective frame through t...
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JP62128414 |
PURPOSE: To simplify the manufacturing process, by forming an insulative fixing frame out of photosensitive glass as well as by forming, on the glass, grooves fixing the end parts of electrode plates through photoetching. CONSTITUTION: B...
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JP62093680 |
PURPOSE: To rapidly perform diagnostic work by providing a plateau characteristic measuring apparatus for measuring the plateau characteristic of a neutron detector and mounting function for taking the same in a calculator to determine a...
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JP62075368 |
PURPOSE: To remove scattered rays easily as outputted being transmitted through an object to be detected, by arranging radiation detecting elements in the direction of transmitting radiation with positions alternately varied. CONSTITUTIO...
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JP62064976 |
PURPOSE: To enable a highly accurate withstand voltage test, by making it possible to neglect a charge current from a practical aspect by raising voltage to be applied from zero voltage in a ratio of 100V or less/sec. CONSTITUTION: The v...
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JP62064041 |
PURPOSE: To improve the radiation transmitting rate, the sensibility of detector and the air-tightness by employing a complex member reinforced with highly strong carbon fiber reinforced resin at the radiation incident window section. CO...
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JP62055855 |
PURPOSE: To make γ ray sensitivity of an inner ionization chamber variable, by using a compensating electrode without any groove on its surface and allowing its dimension in the radial direction to be variable. CONSTITUTION: When a moto...
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JP62031934 |
PURPOSE: To reduce background noise and improve detection efficiency by arraying multiple tubular materials with high absorption factor and besides constant resistance value at the surface within an electron drift space and thus constitu...
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JP62024550 |
PURPOSE: To decrease man-hours for connection and reduce fault rates, by composing a signal electrode plate of connection terminals slenderly projecting on the prolonged surface plate of an electrode part, and forming an electrode- plate...
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JP62024549 |
PURPOSE: To suppress influence of leakage currents from cathodes, by providing anodes with guards, which are connected to a reference potential point in a circuit, so that leakage currents flowing from cathodes can be made to flow into t...
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JP62015746 |
PURPOSE: To make a good image without an artifact, by emplacing band-shaped grounded protective electrode plates at the front and rear ends of signal electrode plates and electrically disconnecting the protective electrode plates from th...
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JP62003683 |
PURPOSE: To stabilize the temperature characteristic by supporting end parts of electrode plates, which are set at prescribed intervals, through an adhesive by insulator supports and exposing surfaces of insulator supports between electr...
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JP62003681 |
PURPOSE: To eliminate the variance of sensitivity by arranging a conductive thin film of good X-ray transmissivity between an X-ray incidence window and an electrode plate array so that this thin film faces the X-ray incidence window wit...
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JP62003682 |
PURPOSE: To array electrode plates with a high precision by providing a positioning means which sets electrode plates in many grooves arranged at prescribed intervals and a retaining means which retains surfaces of positioned electrode p...
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JP61279050 |
PURPOSE: To prevent expelling of electrons by γ rays, by using a low atomic number element such as a plastic for shell, BF3 for a neutron detector, and a molecular sheave carbon for an impure gas trap. CONSTITUTION: As a cathode 2, a th...
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JP61277079 |
PURPOSE: To adapt a unified standard value and to enable inspection not receiving the effect of temp., by providing an X-ray detector having an electrode divided at least into two in the transmitting direction of X-rays and a means for i...
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JP61267252 |
PURPOSE: To obtain an ionization chamber of excellent saturation characteristic and wide measurement range, by mixing the ionized gas of a radiation detector at such a ratio as to maximize the ion mobility of the ionized gas. CONSTITUTIO...
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JP61264652 |
PURPOSE: To suppress pulsewise breakdown noise by forming a flange in almost the same diameter as the internal diameter of a case to a cylindrical ceramics which holds the one end of anode core lead and fixing the ceramics to the end of ...
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JP61264651 |
PURPOSE: To fix easily the core lead of anode within a short period of time by connecting the side end of anode core lead spring with a metal eyelet. CONSTITUTION: An almost cone type eyelet 9 formed by metal is connected to the end of a...
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JP61260540 |
PURPOSE: To enable to confirm a live zero function accurately, by making the live zero current convertible. CONSTITUTION: When the amount of the outer radioactive rays is small, a spring 32 is pulled to the high voltage electrode 1 side,...
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JP61253759 |
PURPOSE: To enable the slice position of the X-ray beam during the use of X-ray CT to be known from output signals generated from the two electrode plates of the slice position detection electrode of an X-ray detector. CONSTITUTION: When...
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JP61188846 |
PURPOSE: To improve the reliability by forming the neutron-sensitive substance through drive process employing a spattering device thereby strengthening the adhering force with anode or cathode thus facilitating handling under manufactur...
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JP61168854 |
PURPOSE: To improve the counting efficiency and reduce the effect of fluctuation of applied voltage, by sealing a specific quantity of nitrogen gas in a GM counter whose extinguishing gas is made of a haloid gas. CONSTITUTION: About 4W40...
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JP61165678 |
PURPOSE: To simplify measurement, by providing a neutron absorbing body for cyclically increasing and decreasing the number of neutrons incident to a nuclear reaction substance and a neutron detector for amplifying the discharge energy o...
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JP61142651 |
PURPOSE: To maintain gas pressure of a radiation detector constant by filling leaked gas by mounting a gas filling container including bellows or the like provided with the volume changing means connected through to the container housing...
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JP61138445 |
PURPOSE: To electrically shield a gastight wall against a positive electrode core line so as to prevent an error in measurement, by setting a grid electrode whose electric potential is not higher than that of the gastight wall, to lie mi...
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JP61128146 |
PURPOSE: To reduce the generation of a reflected electron by forming a strong deflected electric field by low applied voltage, by providing a pair of electrode plates each comprising a metal net in front of the X-ray incident window of a...
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JP61112985 |
PURPOSE: To measure a radiation current over a wide range, by selectively taking out the outputs of first and second voltage take-out circuits for taking out a radiation current with a predetermined level or more and that with a predeter...
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