Analisi statistica delle concentrazioni in aria di 7Be e 210Pb misurate a Palermo.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

[automatically translated] the measurement results are analyzed and discussed, carried out with almost daily basis, the atmospheric concentrations of 7Be in Palermo (1982-2005) and 210Pb (1995-2005). In particular, it examined the performance of the activity reports of the two radionuclides in relation to the joint availability period of the data in order to identify possible correlations between the two radionuclides and with weather-local climate data. The 7Be (of 53.29 days) half-life is the product of the interaction of cosmic rays with nuclei of nitrogen and oxygen. His cosmogenic origin makes the measured concentrations highly dependent on geographic location and seasonal cycles. It emits gamma photons from 478 keV and has a half-life of about 53 days. The 210Pb (half-life 22. 3 years) is rather a decay product of 238U radioactive family. The specific activity of this radionuclide are therefore highly dependent on the detection site. Its gamma emission at 46.5 keV makes necessary the use of a detector suitable for low energies. As for the statistical analysis, we have reconstructed the time series (integrating for missing data) for monthly and weekly averages in order to make comparisons consistent with available data from other geographical areas. the correlations between the data sets have been designed for the two radionuclides and was carried out the frequency analysis in order to highlight seasonal cyclicality.
Original languageItalian
Title of host publicationAtti del XXXVI CONGRESSO NAZIONALE DI RADIOPROTEZIONE
Pages410-419
Number of pages10
Publication statusPublished - 2015

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