
Accession Number : AD0675053
Title : CALCULATIONS OF FISSIONPRODUCT GAMMARAY DOSES IN SINGLECOMPARTMENT ABOVE GROUND CONCRETE STRUCTURES,
Corporate Author : RADIATION RESEARCH ASSOCIATES INC FORT WORTH TEX
Personal Author(s) : Mooney,L. Glenn ; Wells,Michael B.
Report Date : 09 JUN 1968
Pagination or Media Count : 52
Abstract : Parametric data describing Structure Protection Coefficients for fissionproduct gammarays have been generated for use in analysis of the shielding effectiveness of aboveground concrete structures against the initial nuclear radiation produced by the detonation of a nuclear weapon. Energy and angle distributions of the fissionproduct gammaray fluence incident on the roof and walls of rectangular structures were calculated for an overpressure range of 100 psi. These data were used as source input data to an S sub n code for machine calculations of the penetration of fissionproduct gammarays through concrete slabs of various thickness. The penetration calculations used an S sub 16 angle quadrature and a P sub 12 expansion of the KleinNishina differential scattering cross section. The angular distributions of the emergent gammaray absorbed dose current for each slab orientation as a function of slab thickness were input to a machine procedure that was used to calculate fissionproduct gammaray absorbed doses at receivers placed 3 ft. above the structure floor and at various positions within the structure for structures with square floor areas. Structure Protection Coefficients (absorbed dose at receiver per unit freefield absorbed dose) were computed for receivers positioned within concrete structures with an inside height of 10 ft. and with length and widths of the structures varying between 10 and 50 ft. for wall thickness of 6 to 60 inches. (Author)
Descriptors : (*STRUCTURES, RADIOACTIVE CONTAMINATION), (*FISSION PRODUCTS, MATHEMATICAL ANALYSIS), GAMMA RAYS, DOSE RATE, CONCRETE, SHIELDING, PENETRATION, THICKNESS, FLOORS, ABSORPTION, NUCLEAR SCATTERING, PROTECTION, NUCLEAR CROSS SECTIONS, RADIATION MEASURING INSTRUMENTS, NUCLEAR EXPLOSIONS
Subject Categories : Radiobiology
Structural Engineering and Building Technology
Distribution Statement : APPROVED FOR PUBLIC RELEASE