Validity of Scale-Modeling for Gamma-Ray Attenuation.
KANSAS STATE UNIV MANHATTAN ENGINEERING EXPERIMENT STATION
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An adjoint Monte Carlo code GADJET was used to calculate the exposure rate in full-scale and model structures located in the center of plane fallout fields 1 Cisquare ft of cobalt-60. Problems were run for a standard detector, an open basement, a basement with two thicknesses of covers, and a blockhouse with two thicknesses of walls. For all configurations investigated, the effects of nonscaling of the ground does not cause any problem and a procedure was developed to minimize the error introduced by non-scaling of the air. If the solid angle subtended by the roof remains unchanged, scaling of roof contamination offers no problems. The lip effect can be significant in structures with the detector below grade. Modified author abstract
- Nuclear Radiation Shielding, Protection and Safety
- Radioactivity, Radioactive Wastes and Fission Products