Measuring and modeling exposure from environmental radiation on tidal flats

To examine the shielding effects of the tide cycle, a high pressure ion chamber was used to measure the exposure rate from environmental radiation on tidal flats. A theoretical model is derived to predict the behavior of exposure rate as a function of time for a detector placed one meter above groun...

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Bibliographic Details
Published inNuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 537; no. 3; pp. 658 - 665
Main Authors Gould, T.J., Hess, C.T.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.02.2005
Subjects
Environmental radiation
Exposure rate
Gamma-ray flux
High pressure ion chamber
Tides
High pressure ion chamber
Exposure rate
Gamma-ray flux
29.40.Cs
Environmental radiation
Tides
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Summary:To examine the shielding effects of the tide cycle, a high pressure ion chamber was used to measure the exposure rate from environmental radiation on tidal flats. A theoretical model is derived to predict the behavior of exposure rate as a function of time for a detector placed one meter above ground on a tidal flat. The numerical integration involved in this derivation results in an empirical formula which implies exposure rate ∝ tan - 1 ( sin t ) . We propose that calculating the total exposure incurred on a tidal flat requires measurements of only the slope of the tidal flat and the exposure rate when no shielding occurs. Experimental results are consistent with the model.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2004.07.288