Appl. Radiat. Isot. Vol. 40, No. 7, pp. 607-613, 1989 Int. J. Radiat. Appl. Instrum. Part A

SOIL SAMPLING AND Cs-137 ANALYSIS OF THE CHERNOBYL FALLOUT IN GREECE

S.E.Simopoulos
Nuclear Engineering Section
National Technical University of Athens

A total of 1242 samples of soil, collected over Greece, during the period May-November 1986 were counted and analysed for Cs-137 from Chernobyl fallout. The counting was performed using a NaI detector on line to a microcomputer; morover, 252 of the samples were also analysed using Ge detectors, for inter-comparison and also for the assessment of other long-lived isotopes in the fallout. The results show that Cs-137 fallout from Chernobyl presents a remarkable geographical variability. The evaluated ground activity due to Cs-137 deposition ranges between 0.01 and 137 kBq/m2.