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Progress in Earth and Planetary Science
Fig. 10 | Progress in Earth and Planetary Science

Fig. 10

From: Atmospheric radioactivity over Tsukuba, Japan: a summary of three years of observations after the FDNPP accident

Fig. 10

Deconvolution of the 89Sr, 90Sr and 90Y activities. It is possible to deconvolute radionuclides by measuring the temporal change in the total β-activity (cpm) of the purified radioSr source (March 14–15, 2011 sample). Elapsed days means the time after the radiochemical separation. An initial activity ratio of 89Sr/90Sr was assumed and applied to the curve fit as 2/0.14 and 10/0.14.

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