Accession Number : AD0831562

Title :   TABULATION OF DOSE TRANSMISSION FACTORS FOR TWO-LAYER SLABS,

Corporate Author : NATIONAL BUREAU OF STANDARDS GAITHERSBURG MD

Personal Author(s) : Shimizu, A.

Report Date : 21 SEP 1967

Pagination or Media Count : 81

Abstract : The method of invariant imbedding has been applied to the penetration problem of gamma rays through two-layer slabs, and turned out to be accurate and less time-consuming than the Monte Carlo method. A series of calculations were made for two-layer slabs of water, iron and lead for plane oblique sources. An approximate formula for synthesizing the build-up factor of a composite slab from those of elementary layers is derived from numerical solutions by modifying the formula originally proposed by Kalos. (Author)

Descriptors :   (*GAMMA RAYS, PENETRATION), (*SHIELDING, TRANSPORT PROPERTIES), WAVE PROPAGATION, PROBABILITY, STATISTICAL DISTRIBUTIONS, APPROXIMATION(MATHEMATICS), SOURCES, ENERGY, THICKNESS, WATER, IRON, LEAD(METAL), TABLES(DATA).

Subject Categories : Nuclear Radiation Shield, Protection & Safety
      Fission Reactor Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE