Seasonal Variation of Ambient Dose Rates and its Fluctuation Factors in Hamaoka Area of Shizuoka Prefecture
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<I>Environmental radiation monitoring around nuclear power plants is important to watch for radiation and radioactive substances released from the plants. Environmental radiation mainly consists of cosmic rays, gamma-rays from the ground, radiation from radon and its daughters because the leakage of radiation from the plants which normally operates is rarely observed. We investigated seasonal and meteorological fluctuations of ambient dose rates in the vicinity of</I> Hamaoka <I>nuclear plant in</I> Shizuoka. <I>Ambient dose rates on fine days were low in summer in agreement with the variation of concentration of radon daughters, but the high dose rates in winter was not. Furthermore, the ambient dose rates were divided into five fractions, that is, cosmic rays, radiation from the ground, gamma-rays from radon daughters near the ground, gamma-rays from the radon daughters diffused into a upper area than the location of a radon monitor and gamma-rays from radon daughters transported by wind, and their relationship with meteorological condition was analyzed.</I>
- 社団法人 日本アイソトープ協会の論文
社団法人 日本アイソトープ協会 | 論文
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