How do cosmic-ray dose rates of public vary with nations?

Sato, Tatsuhiko   

After the release of the Report of the United Nations Scientific Committee of the Effects of Atomic Radiation in 2008 (UNSCEAR2008), it became commonly accepted that the world population-weighted effective dose due to cosmic-ray exposure is 0.38 mSv. However, this value was derived from approximate projections of altitude and geographic dependences of the cosmic-ray dose rates as well as the world population. We therefore re-evaluated the population-weighted annual effective doses and their probability densities for the entire world as well as for 230 individual nations, using a sophisticated cosmic-ray flux calculation model in tandem with detailed grid population and elevation databases. Outline and results of the evaluation are presented in this manuscript.