Seasonal variations of radon and the radiation exposure levels in Nerja cave, Spain

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• 作者：C.  ; Dueñ ; as^a ;   ; ^{mperezm@uma.es} ; M.C.  ; Ferná ; ndez^a ; S.  ; Cañ ; ete^a ; M.  ; Pé ; rez^b ; E.  ; Gordo^a ;   ; ^b
• 关键词：Effective dose ; ²²²Rn air concentration ; Nerja cave environment
• 刊名：Radiation Measurements
• 出版年：2011
• 出版时间：October 2011
• 年：2011
• 卷：46
• 期：10
• 页码：1181-1186
• 全文大小：878 K

文摘

²²²Rn concentrations in the air in Nerja cave (Spain) (3¡ã?52?5¡ä¡äW?36¡ã 43?0¡ä¡äN) were measured by continuous monitoring using Alpha-Guard, Genitron instrument equipment. The ²²²Rn measurements were carried out for a complete annual cycle in the different halls: Vestibule hall from July 2003 to June 2004, Ballet hall from July 2004 to June 2005 and Mirador hall from July 2005 to June 2006. Starting from the entrance of the cave we successively find the Vestibule hall, the Ballet hall and the Mirador hall. The range of ²²²Rn levels were of 8?27?Bq?m^? for the Vestibule hall, 28?75?Bq?m^? for the Ballet hall and 38?78?Bq?m^? for the Mirador. The aim of this study was to detect seasonal variation patterns of ²²²Rn concentrations. The seasonal variations of ²²²Rn concentrations are discussed in relation to various meteorological factors measured inside and outside the cave. The radiation exposure levels for workers and tourists with different equilibrium factors have been evaluated. The radiation exposure levels for workers and tourists only represent a low percentage of the exposure guides for the general population.