摘要:
PROBLEM TO BE SOLVED: To provide an ion generation method by which ion species to be generated from a solid specimen is speedily changed.SOLUTION: The ion generation method includes: loading a mixed specimen into an oven of an ion source, the mixed specimen being obtained by mixing a plurality of kinds of powder specimens of which oven temperatures in the case of reaching a specific ion strength are different from each other; raising the temperature of the oven so as to generate ion from any one kind of specimen having the oven temperature in the case of reaching the specific ion strength is relatively low among the plurality of kinds of specimens; generating ion from the one kind of specimen; further raising the temperature of the oven, after the ion is generated from the one kind of specimen, so as to be such a temperature that ion is generated from any other kind of specimen of which the oven temperature in the case of reaching the specific ion strength is higher than the one kind of specimen among the plurality of kinds of specimens; and generating ion from the other kind of specimen.
摘要:
PROBLEM TO BE SOLVED: To provide a method capable of enhancing the accuracy of measurement by considering factors which affect the measurement of a space dose rate in the vicinity of a nuclear power facility after an accident and thus capable of measuring a deposition quantity of radioactive cesium on a ground surface more accurately.SOLUTION: A space dose rate conversion coefficient for converting a gamma ray counting rate detected by a radiation detector mounted on an unmanned helicopter to the value of a space dose rate is calculated in advance; an attenuation coefficient of the gamma ray counting rate by air is calculated in advance from the relationship between a plurality of ground altitudes at one previously specified point and the gamma ray counting rate; a gamma ray counting rate at the certain point of time when the unmanned helicopter flies at a certain ground altitude in the vicinity of a nuclear power facility and positional information at this point of time are obtained by the radiation detector mounted on the unmanned helicopter and GSP; a space dose rate of the one-meter thick ground surface at this point is calculated by using the previously obtained attenuation coefficient; and a deposition quantity of radioactive cesium on the ground surface is calculated.
摘要:
PROBLEM TO BE SOLVED: To provide a rotating powder compression molding machine where a necessary and sufficient amount of a lubricant is coated in the almost entire area of the inner peripheral surface of a mortar hole and the upper end surface of a lower pestle and the lubricant does not adhere to the upper surface of a rotary table.SOLUTION: An internal passage Z1 opening at the inner peripheral surface of a mortar hole 4 is opened on a rotary table 31. A lubricant is jetted to the inner peripheral surface of the mortar hole 4 before filling powders and the upper end surface of a lower pestle 6 inserted into the mortar hole 4 from the side of the mortar hole 4 via the internal passage Z1. At the same time, the lubricant jetted into the mortar hole 4 via the internal passage Z1 is sucked by a suction member Z3 positioned just above the mortar hole 4.
摘要:
PROBLEM TO BE SOLVED: To manufacture a large-sized lithium target in which, for example, the diameter×thickness of a conjugate of an Li membrane/Cu cooling base is settled within the range of φ20 mm to 40 mm×100 to 200 μm±10 μm.SOLUTION: A manufacturing method of a lithium target includes the steps of: placing, on a hot plate, a Cu cooling base constituting the lithium target; heating the Cu cooling base in a nitrogen containing atmosphere by means of the hot plate with the precision of 20 to 70°C±0.1°C; placing an Li membrane on the Cu cooling base while heating the Cu cooling base by means of the hot plate, and temporarily bonding both the Li membrane and the Cu cooling base by pressing them using a roller; and then detaching a conjugate of the Li membrane/Cu cooling base from the hot plate and joining both the Li membrane and the Cu cooling base within several seconds under the condition that the pressure is 15 to 25 MPa and the temperature is within the range of 20 to 70°C±0.1°C.
摘要:
PROBLEM TO BE SOLVED: To provide an ion exchange membrane small in an area change ratio even when changed from a dry state to a heated and swollen state.SOLUTION: A method of the present invention for producing an ion exchange membrane includes the steps of: (i) forming a membrane using a liquid including a polymer containing an acidic group by means of a cast film formation method; (ii) causing the membrane to hold water; and (iii) drying the membrane that holds water while the shape is fixed. The method does not include a step of substantially drawing the membrane obtained through the step (ii), after the step (ii).
摘要:
PROBLEM TO BE SOLVED: To provide novel methods for producing an ion exchange resin-containing liquid and ion exchange membrane.SOLUTION: The disclosed method for producing an ion exchange resin-containing liquid includes steps of: irradiating a first polymer with radiation ray at a temperature of 10°C or less; synthesizing a second polymer containing precursor of sulfonic acid group by contacting a solution containing a monomer that contains precursor of sulfonic acid group, with the first polymer in solid state to graft polymerize the monomer to the first polymer; obtaining a third polymer containing sulfonic acid group by converting the precursor of sulfonic acid of second polymer into sulfonic acid group; and dispersing or dissolving the third polymer into an organic solvent.
摘要:
PROBLEM TO BE SOLVED: To provide a technique for estimating a state in a nuclear reactor from information associated with Cherenkov light obtained by observing the inside of the nuclear reactor.SOLUTION: An information processing device as an aspect of the present invention includes an image acquisition part which acquires an image of Cherenkov light imaged by an imaging device observing the inside of a nuclear reactor, and a state estimation part which converts a shading value of each area of the acquired image into a photon number of the Cherenkov light generated in the area using photon generation number conversion data for converting a shading value of the image into a photon number, and estimates the state in the nuclear reactor based upon photon numbers of the Cherenkov light in the respective areas obtained through the conversion.