SHIELDING FACTORS FOR UNDERGROUND SHELTERS OF VARIOUS GEOMETRIC SHAPES

Abstract

This study investigates the additional nuclear shielding from an isotropic (plane) radioactive gamma source afforded by various shapes of underground curved-roof shelters compared to the basic slab shield. This additional shielding is defined in the form of a dimensionless Geometry Factor which is a function of the physical dimensions and shape of the shelter. Curves are presented from which the Geometry Factors for the underground shelter shapes of spheres, horizontal cylinders, ellipsoids, and vertical cylinders or silos can be obtained with minimum calculations using only the physical dimensions of the shelter and the depth of material above the crown of the shelter. The Geometry Factors thus obtained are independent of material and photon energy except in the case of the silo and can be used as dimensionless factors once the attenuation for a slab shield has been calculated for a particular set of radiological conditions and materials.

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Document Details

Document Type
Technical Report
Publication Date
Apr 05, 1961
Accession Number
AD0254344

Entities

People

  • J. C. Ledoux
  • L. K. Donovan

Organizations

  • Naval Facilities Engineering Service Center

Tags

Communities of Interest

  • Air Platforms
  • Biomedical
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Attenuation
  • Civil Engineering
  • Construction
  • Ellipsoids
  • Engineering
  • Geometry
  • Materials
  • Naval Shore Facilities
  • Navy
  • Nuclear Radiation
  • Numerical Integration
  • Radiation
  • Shielding
  • Underground Structures
  • Warfare

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Nuclear Civil Defense.