A new gamma spectral analysis algorithm for the determination

The aim of the investigation was to determine whether the 137Cs contamination found in plants around the Paks Nuclear Power Plant in Paks, Hungary was a result of local emission or of the earlier Chernobyl accident. We distinguished between the two possibilities on the basis of the 134Cs/137Cs ratio. The 134Cs activities to be measured were extremely low, in some cases undetectable with conventional evaluation softwares. Therefore a special algorithm was used to determine the 134Cs/137Cs ratio. On the basis of the results it is evident, that the contamination originated from Chernobyl.