SREL Reprint #795




Four-year Declines in Radiocesium Concentrations of American Coots Inhabiting a Nuclear Reactor Cooling Reservoir

S. E. Gresens, M. L. Cothran, and J. H. Thorp



When a neutron monitor is used to assess exposures in spectral environments substantially different from that in which it was calibrated, the results can be seriously affected by its energy dependence.  In such case, characterization of the spectral environment will provide appropriate corrections for the readings and uncertainties in the results can be estimated.  The multisphere spectrometer proved valuable for such characterization.

NTA film and polycarbonate track etch personnel dosimeters seem inadequate for use in this environment.  The monomer holds promise.  Both albedo dosimeters may prove useful if extensive spectral characterization reduces the uncertainties involved to acceptable limits.  Finally, the survey instruments perform adequately.  A previous analyses using the iterative unfolding code BON, resulted in different detector response distributions (Sa8).  This was attributed to the fact that the data base was not the same and to the inherent smoothing of the iterative technique.


SREL Reprint #0795

 Brisbin, I.L., Jr. and M.J. Vargo. 1982. Four year declines in radiocesium concentrations of American coots inhabiting a nuclear reactor cooling reservoir. Health Physics 43:266-269.

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