Radiation monitor and method for measuring radiation

A method for measuring radiation by using a radiation monitor wherein

• the radiation monitor comprises
• a radiation detection unit configured to detect radiation;
• a photon transmission unit configured to transmit a photon emitted from a light emitting element of the radiation detection unit;
• a wavelength differentiating unit configured to differentiate a wavelength from the photon transmission unit;
• a light detection unit configured to convert a photon differentiated by the wavelength differentiating unit to an electric pulse;
• and
• a measurement device configured to measure radiation based on a count rate of the electric pulse, wherein
• the radiation detection unit comprises
• a first light emitting element configured to generate a photon in response to incident radiation;
• a compound part configured to include a compound generating a charged particle in a nuclear reaction with an incident neutron;
• and
• a second light emitting element located between the first light emitting element and the compound part and configured to generate a photon in response to radiation,
• the wavelength of the photon generated by the first light emitting element and the wavelength of the photon generated by the second light emitting element are different from each other,
• the measurement device measures at least one selected from a group consisting of an air dose rate, a charged particle and a neutron, based on changes of photon count rates of different wavelengths over time.