Abstract

The relationship between the reported ambient dose equivalent (H*(10)) and the individual dose rate recorded by medical staff in Fukushima City after the accident at the Fukushima Daiichi nuclear power plant was evaluated, following a 9.0-magnitude earthquake that struck the east coast of Japan. Personal dose equivalent (Hp(10)) ranged from 0.08 to 1.63 µSv h−1 and H*(10) ranged from 0.86 to 12.34 µSv h−1. Hp(10) from March to July 2011 were significantly lower than H*(10). The relationships between these dose equivalents were moderately correlated. The regression equation was calculated as follows: Hp(10)=0.0696×H*(10)+0.0538. The preliminary data of this study show that, in Fukushima, the individual dose is much lower than that determined H*(10). It is important to evaluate Hp(10) in order to lessen the anxiety of the general population in Fukushima.

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