Accession Number : AD0433658


Title :   SOMME GAMMA-RAY SHIELDING PROPERTIES OF FINITE STEEL SLABS,


Corporate Author : NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CALIF


Personal Author(s) : Langer,G E ; Shumway,B W


Report Date : 21 Jan 1964


Pagination or Media Count : 46


Abstract : Somme gamma-ray shielding properties of plane steel slabs placed between a point source and a point detector were investigated. The dose buildup resulting from 8 by 9 ft slabs 0.25, 1.00, and 1.50 in. thick (0.36, 1.45, and 2.17 mean free paths) placed between a Cs(137) point source and a small hemisphereical ionization chamber was measured. The distance from the source to the detector was 16 ft. Each slab was placed at five selected points between the source and the detector in order to observe the variation in dose buildup with slab position. The dose buildup due solely to singly scattered photons was calculated both for the 8 by 9 ft slabs and for slabs of infinite extent. The measured values of dose buildup are compared with the calculations. (Author)


Descriptors :   *STEEL , GAMMA RAYS , SHIELDING , METAL PLATES , THICKNESS , DOSE RATE , MEASUREMENT , DAMAGE , RADIATION EFFECTS , PHOTONS


Distribution Statement : APPROVED FOR PUBLIC RELEASE