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Concentration measurements of 7Be at ground level air at Palermo, Italy—comparison with solar activity over a period of 21 years
- Source :
-
Journal of Environmental Radioactivity . Mar2004, Vol. 72 Issue 3, p259. 13p. - Publication Year :
- 2004
-
Abstract
- Air activity concentrations of 7Be in Palermo determined for the period January 1995–December 2002 by γ-ray spectrometric analysis of particulate samples collected on paper filter by a high-volume sampler (~900 m3 h−1) are reported. The temporal behaviour of 7Be concentration presents the same characteristics already observed in the measurements carried out over the previous 13-year (1982–1994) investigated period. The mean value of 5.06 mBq m−3 obtained from the analysis of the 4636 particulate samples collected from 1982 to 2002 can be considered a representative value of 7Be air concentration at ground level in our geographical zone. The comparison of long-term variation in the 7Be concentrations with the cyclic solar activity—extended to the whole period of 21 years—confirms the inverse correlation between the two quantities. [Copyright &y& Elsevier]
- Subjects :
- *ATMOSPHERE
*AIR
*SOLAR activity
*SOLAR radiation
*SOLAR active regions
*SPECTROMETRY
Subjects
Details
- Language :
- English
- ISSN :
- 0265931X
- Volume :
- 72
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Journal of Environmental Radioactivity
- Publication Type :
- Academic Journal
- Accession number :
- 12244958
- Full Text :
- https://doi.org/10.1016/S0265-931X(03)00177-2