Home / Store / Journals / Electronic Articles / Nuclear Science and Engineering / Volume 79 / Number 4
R. R. Nason, J. K. Shultis, R. E. Faw, C. E. Clifford
Nuclear Science and Engineering
Volume 79 / Number 4 / December 1981 / Pages 404-416
Format:electronic copy (download)
A benchmark gamma-ray skyshine experiment is described in which 60Co sources were either collimated into an upward 150-deg conical beam or shielded vertically by two different thicknesses of concrete. A NaI(Tl) spectrometer and a high pressure ion chamber were used to measure, respectively, the energy spectrum and the 4π-exposure rate of the air-reflected gamma photons up to 700 m from the source. Analyses of the data and comparison to DOT discrete ordinates calculations are presented.
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