Accession Number : ADA192287

Title :   Calculations of Neutron and Gamma-Ray Transport in Air-Over-Ground Geometry: Comparison with BREN and APR Experiments.

Descriptive Note : Technical rept. 1 Oct 82-31 May 83,

Corporate Author : SCIENCE APPLICATIONS INTERNATIONAL CORP SAN DIEGO CA

Personal Author(s) : Dolatshahi, F ; Kaul, D C

PDF Url : ADA192287

Report Date : 01 Jun 1983

Pagination or Media Count : 116

Abstract : Calculations of neutron and gamma-ray transport corresponding to the BREN and APR reactor experiments have been performed using the two-dimensional, discrete ordinates transport code DOTSAI. These calculations have been made as a test of state-of-the-art radiation transport techniques and to provide input for further analyses relevant to an ongoing program of Japanese A-bomb survivor dose reassessment. Comparisons of calculated and measured data have produced mixed results. However, it is concluded that modern calculational techniques are capable of accurately reproducing neutron and gamma-ray kerma and spectral distributions to large distances from Co-60 and fast reactor sources in an air-over-ground geometry. Keywords: Nuclear radiation, Neutrons, Gamma rays.

Descriptors :   *GAMMA RAYS, *NEUTRONS, *TRANSPORT, AIR, CODING, FAST REACTORS, GEOMETRY, GRAPHS, LAND AREAS, LONG RANGE(DISTANCE), MIXING, NUCLEAR RADIATION, RADIATIVE TRANSFER, SOURCES, SPECTRAL ENERGY DISTRIBUTION, STATE OF THE ART

Subject Categories : Radiation and Nuclear Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE