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Annual γ-exposure around a nuclear site has been evaluated from short term plume-exposures with annual statistics of meteorological condition in which wind directions counted in a sector of 16 compass points are considered to be on the center of the sector. In this report, effects of wind direction frequency distribution in a sector itself on the γ-exposure are described. Correction coefficients to be applied to conventional calculation are obtained. Methods of calculation of plume-exposure and formula of frequency distribution in a sector are discussed.
日本保健物理学会の論文