| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a radiation monitor in a nuclear power plant, especially a radiation monitor suitable for measurement in a wide range. <P>SOLUTION: Plural radiation monitoring detectors including radiation light-emitting elements having different excitation or emission wavelengths are optically coupled in series using optical fibers. One end of the detectors optically coupled in series is optically coupled with a light source on which light with plural wavelengths can be incident. The other end is optically coupled with a measuring device that measures the intensity of light of each wavelength. An arithmetic device specifies a radiation monitoring detector among the plural detectors and obtains a radiation dose rate of the specified detector, on the basis of the intensity of light of each excitation and emission wavelength. In another embodiment, a light reflector or the like is coupled with one end of radiation monitoring detectors optically coupled in series in order to reflect light. The other end is optically branched. The branched end is optically coupled with a light source on which light of plural wavelengths can be incident and the other end is optically coupled with a measuring device that measures the intensity of light of each wavelength. <P>COPYRIGHT: (C)2013,JPO&INPIT |
