Chernobyl

[Michael McNaughton <mcnaught@lanl.gov>]

Dear Radsafers

Can someone straighten me out on the radiation detected at Studsvik in
Sweden during the Chernobyl accident?

In the days following the Chernobyl accident, the airborne activity was
generally <10 Bq/m3 of various fission products. Therefore, the external
gamma dose should be the order of 1 nSv/h. However, the report in Nature,
volume 321, page 192, says the dose rate increased by about 100 nSv/h. Why
the discrepancy? 

My guess is perhaps the detectors were responding to betas. What sort of
detectors were they using at Studsvik?

Thanks, mike
Mike McNaughton
Los Alamos National Lab.
email: mcnaught@LANL.gov or mcnaughton@LANL.gov
phone: (505)667-6130
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