MONTE CARLO CALCULATION OF SELF-SHIELDING BY ENCAPSULATED GAMMA RAY SOURCES.

Abstract

The dimensions of many encapsulated gamma ray sources used in experiments are not small compared with the mean-free-path-length of the radiation within them. For this reason, the emitted radiation will not be at the source energies only, but will be distributed in a continuous spectrum. Furthermore, if the source is cylindrical, the emitted radiation will not be isotropically distributed about the source. This report describes a calculation by the Monte Carlo method to find the energy and angular distributions of photons emitted from a cylindrical or spherical encapsulated source. Computed results are compared with experimental observations of energy and angular distribution, and show good agreement. Calculated spectra for typical cylindrical sources of Co-60 encapsulated in iron are given. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1966
Accession Number
AD0636788

Entities

People

  • Kenneth Preiss

Organizations

  • University of Illinois Urbana–Champaign

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Agreements
  • Continuous Spectra
  • Electromagnetic Radiation
  • Gamma Rays
  • Mean Free Path
  • Monte Carlo Method
  • Observation
  • Radiation
  • Radiation Shielding
  • Shielding
  • Spectra

Fields of Study

  • Physics

Readers

  • Computer Networking
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Solar Physics