Be-7 in atmospheric deposition: determination of seasonal indices

This paper is focused on the results for activity concentrations of Be-7 in depositions recorded in Vina Institute of Nuclear Sciences, as part of radioactivity monitoring in Institute from 1994 to 2013. year. Samples were collected on a monthly basis and activities were present on sampling day (middle of the month). The activities were determined on HPGe detectors by standard gamma spectrometry, and they ranged from 0.05 to 10.4 Bq m(-2). The obtained results were statistically analyzed. The Be-7 activity shows a pronounced seasonal pattern, with the maximum in spring-summer and minimum in winter