Accession Number : AD0282753

Title :   EXPERIMENTAL DETERMINATION OF NEUTRON FLUX DISTRIBUTIONS IN SLABS AND OF EMERGENT SECONDARY GAMMA RAYS

Corporate Author : GENERAL DYNAMICS/FORT WORTH TEX

Personal Author(s) : WESTERN,G.T.

Report Date : JUN 1962

Pagination or Media Count : 1

Abstract : Neutrons from a shield test reactor, positioned within the Outside ASTR Tank, were deflected 90 deg with a carbon reflector onto shield materials of linear and borated linear polyethylene, ZrH1.95, Inconel X, BeO, Be, and stainless steel (type 309). The emergent flux of various monoenergetic capture gamma rays were experimentally determined for several thicknesses of each material with a special 3-crystal NaI(T lambda) anticoincidence total-absorption gamma-ray spectrometer. Also, the spectrum of neutrons incident upon the shield materials and the flux distribution of thermal neutrons within the material were measured. Neutron spectral and flux distribution data were also obtained for the shield materials positioned in the direct beam of neutrons. (Author)

Descriptors :   *GAMMA NEUTRON REACTIONS, *NEUTRON FLUX, *SHIELDING, BERYLLIUM, BERYLLIUM COMPOUNDS, ETHYLENES, OXIDES, POLYMERS, STAINLESS STEEL, ZIRCONIUM

Distribution Statement : APPROVED FOR PUBLIC RELEASE