"Measurements of environmental radioactivity by HPGe gamma-spectrometry were carried out with the aim of investigating the distribution of natural radionuclides in a volcanic area and to compare two different methodologies an in situ gamma-survey of the area and high accuracy laboratory measurements of soil samples. Results demonstrate good performance of the in situ technique, also confirmed by a correlation analysis between the results obtained by the two methodologies. A volcanic gas discharge area was chosen as the test site for the presence of natural long-lived radionuclides such as K-40 and U-238, U-235 and Th-232, and their decay chain members. Clear evidence of Rn-222 degassing in the area was confirmed by Ra-226 values measured by the in situ technique. Higher K-40 values measured by the in situ technique may be attributed to the presence of vegetation in the study area. (C) 2012 Elsevier Ltd. All rights reserved."
DI PAOLO, F., Plastino, W., Povinec, P.p., Bella, F., Budano, A., DE VINCENZI, M., et al. (2013). Ground gamma-ray survey of the Solforata gas discharge area, Alban Hills-Italy: A comparison between field and laboratory measurements. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY, 115, 175-182 [10.1016/j.jenvrad.2012.08.002].
Ground gamma-ray survey of the Solforata gas discharge area, Alban Hills-Italy: A comparison between field and laboratory measurements
DI PAOLO, FEDERICO;PLASTINO, Wolfango;DE VINCENZI, Mario;Ruggieri F.
2013-01-01
Abstract
"Measurements of environmental radioactivity by HPGe gamma-spectrometry were carried out with the aim of investigating the distribution of natural radionuclides in a volcanic area and to compare two different methodologies an in situ gamma-survey of the area and high accuracy laboratory measurements of soil samples. Results demonstrate good performance of the in situ technique, also confirmed by a correlation analysis between the results obtained by the two methodologies. A volcanic gas discharge area was chosen as the test site for the presence of natural long-lived radionuclides such as K-40 and U-238, U-235 and Th-232, and their decay chain members. Clear evidence of Rn-222 degassing in the area was confirmed by Ra-226 values measured by the in situ technique. Higher K-40 values measured by the in situ technique may be attributed to the presence of vegetation in the study area. (C) 2012 Elsevier Ltd. All rights reserved."I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
