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Article | REF: BN3912 V1

Artificial Radionuclide Background in French Metropolitan Territory

Author: Philippe RENAUD

Publication date: May 10, 2022 | Lire en français

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    10. Carbon-14 activity in the environment over time

    Figure 20 a shows trends in carbon-14 activity per unit mass of carbon in atmospheric and terrestrial environments since 1950, for the entire northern hemisphere. . These activities have risen from the natural cosmogenic level of 226 Bq.kg -1 of C prior to nuclear weapons testing, to almost...

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