Concentration measurements of 7Be at ground level air at Palermo, Italy -: comparison with solar activity over a period of 21 years

被引：63

作者：

Cannizzaro, F ^{[1
]}

Greco, G ^{[1
]}

Raneli, M ^{[1
]}

Spitale, MC ^{[1
]}

Tomarchio, E ^{[1
]}

机构：

[1] Univ Palermo, Dipartimento Ingn Nucl, I-90128 Palermo, Italy

来源：

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 2004年 / 72卷 / 03期

关键词：

Be-7; activity concentration; temporal variations; solar activity; Palermo;

D O I：

10.1016/S0265-931X(03)00177-2

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Air activity concentrations of Be-7 in Palermo determined for the period January 1995-December 2002 by gamma-ray spectrometric analysis of particulate samples collected on paper filter by a high-volume sampler (similar to900 m(3) h(-1)) are reported. The temporal behaviour of Be-7 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 Be-7 air concentration at ground level in our geographical zone. The comparison of long-term variation in the Be-7 concentrations with the cyclic solar activity-extended to the whole period of 21 years-confirms the inverse correlation between the two quantities. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：259 / 271

页数：13

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