THE PREPARATION OF SIMPLIFIED MANUALS FOR SHIELDING ANALYSIS. SUPPLEMENT 1: 'IN AND DOWN' SCATTERING AND FINITE FIELDS OF CONTAMINATION

Abstract

A study was undertaken to examine present and proposed methods of calculating the attenuation afforded 'in and down' scattered radiation by a horizontal slab, and the effects of finite fields of contamination in order to recommend improvements and updating for OCD documents TR-20, Volumes 1 and 2, 'Shelter Design and Analysis.' In this study we examined the assumptions used in computing the 'in and down' attenuation factor, assessed their effect on the resulting attenuation factors, and compared the results with the latest available experimental data. Recommendations are provided as to 'best value' factors and how they might be included in existing publications. The effects of finite fields of contamination were subjected to further analysis by directly comparing the existing method of calculation with results obtained using transmission coefficients calculated by the Monte Carlo method. This comparison, though complete only for above-ground locations, indicates that further study is required before the existing method of calculation can be relied upon.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1967
Accession Number
AD0652874

Entities

People

  • Albert W. Starbird
  • John F. Batter

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Attenuation
  • Civil Defense
  • Classification
  • Contamination
  • Detectors
  • Dose Rate
  • Engineering
  • Experimental Data
  • Gamma Rays
  • Geometry
  • Ground Based
  • Monte Carlo Method
  • Radiation
  • Radiation Shielding
  • Scattering
  • Security

Readers

  • Atmospheric Remote Sensing.
  • Computational Modeling and Simulation
  • Nuclear Civil Defense.