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Annual Variations of 14C Concentration in the Tree Rings in the Vicinity of Ignalina Nuclear Power Plant

  • Žilvinas Ežerinskis (a1), Justina Šapolaitė (a1), Algirdas Pabedinskas (a1), Laurynas Juodis (a1), Andrius Garbaras (a1), Evaldas Maceika (a1), Rūta Druteikienė (a1), Darius Lukauskas (a2) and Vidmantas Remeikis (a1)...

In this paper we analyze the radiocarbon (14C) concentration changes over the whole operational period of the Ignalina Nuclear Power Plant (INPP) including the post-shutdown decommissioning. Environmental samples from the vicinity of the INPP and a rural area as background of pine tree rings were analyzed with the single stage accelerator mass spectrometer (SSAMS). The analysis shows the local influence of the INPP from 3 to 7 pMC. The whole time span from 1983 to 2015 is divided into three periods representing the early and late operational and post-shutdown stages of the INPP with different 14C profiles in analyzed samples. The influence of the maintenance of the INPP and radioactive waste management activities are indicated and discussed.

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