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Be-7 detections in ambient air samples -Reply
Our continuous air samples taken around the Millstone Nuclear Power Station
routinely see Be-7 in the range of 0.05 to 0.1 pCi/cubic meter (2 sigma error
around 0.03). The source is cosmic.
Claude Flory
Senior Scientist
Northeast Utilities
floryca@nu.com
>>> Bill Lohner <Bill.Lohner@epa.state.oh.us> 03/05/99 11:10am >>>
During routine gamma analyis of high volume particulate air samples (originally
looking for Co-60 and Cs-134), our laboratory has detected somewhat elevated
readings for Be-7.
The only natural source we've been able to fing would be from upper atmosphere
interactions with N and O. Does anyone have any information regarding the
presence of Be-7 in ambient air samples, such as possible sources, "normal
concentrations", etc.?
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