Quasi-effective energy of natural radiation around nuclear power plants.

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概要

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• As an application of the twin filter TLD system, estimates of the quasi-effective energy of natural radiation were obtained at 43 monitoring points around nuclear power plants of eight prefectures in Japan. Quasi-effective energy was defined as energy corresponding to the effective energy of photon radiation determined using the half value layer method. The quasi-effective energy of natural radiation, except for the hard component of cosmic rays, was in the range of approximately 850 keV to 2.5 MeV, with 85% of all the monitoring points giving quasi-effective energies from 1.0 to 1.5 MeV. This result shows that the calibration source for natural radiation dosimeters must be a <SUP>60</SUP>Co source.

• 一般社団法人 日本原子力学会の論文

著者

• Nakajima Toshiyuki

  Division Of Hematology Department Of Internal Medicine Institute For Advanced Medical Sciences Hyogo

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