Analyzing Cs-137 and Cs-134 concentration in mosses samples in Campania region. Italy after the Chernobyl accident

The Chernobyl accident caused an exceptional relapse of radioactive material. The consequent fallout it in several European countries, including Italy. Term and height of aeriform effluent radioactivity admitted into the atmosphere, the distance of place of origin and the variability of meteorologic qualifications existence (wind, rain, etc...), determined the level of contamination of radioactivity in the air with a consequent deposition of soil much variable depending on space and time. Following the Chernobyl accident the situation of artificial deposition in Italy is considerably changed. In order to obtain arrange a new map of contamination of radioactivity in the soil. All over Italian territory has been organized radioecological campaign to arrange a new zero point. (author)