FALLOUT RADIATION ENERGY DISTRIBUTION AS A FUNCTION OF ALTITUDE,

Abstract

The gamma-ray spectra in the air above a plane containing fallout fission products were calculated as a function of time and altitude. Similar calculations were made with the spectra of cobalt-60 and cesium-137 assumed as source terms. An experiment was designed to measure the spectra calculated for cobalt-60 utilizing eleven cobalt-60 sources and a very sensitive sodium-iodide gamma-ray spectrometer. The results of the calculations indicate that the relative spectra are constant above 800 feet for times after fission greater than one day and, furthermore, that the variation of the dose rate with altitude is constant for this time interval. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 15, 1964
Accession Number
AD0602492

Entities

People

  • T. W. De Vries

Organizations

  • General Dynamics

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Altitude
  • Dose Rate
  • Fission Products
  • Gamma Ray Spectra
  • Gamma Rays
  • Intervals
  • Radiation
  • Radiation Effects
  • Sodium
  • Sodium Compounds
  • Spectra
  • Spectrometers
  • Time Intervals

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Nuclear Civil Defense.
  • Spectroscopy.