SOME PROPERTIES OF RADIOACTIVE FALLOUT: BALLOON-MOUNTED SHOT PRISCILLA.

Abstract

Radiochemical assay results from measurements on samples of fallout from the balloon-mounted (air) Shot Priscilla revealed the presence and relatively high abundance of induced activities from soil materials near ground zero. The decay rates at early times were therefore significantly slower and the relative exposure rates higher than for normal mixed fission products. On the other hand, the decay rate of the fallout at distances greater than 10 miles from ground zero was essentially parallel to that of unfractionated U-235 fission products. The bulk weight of the close-in fallout samples apparently consisted almost entirely of blast-raised dust that settled along with a few larger particles into the collecting trays. The measured specific activity of one single large particle with a diameter of about 750 microns was 40 terafissions/gm. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1969
Accession Number
AD0708566

Entities

People

  • Carl F. Miller

Tags

DTIC Thesaurus Topics

  • Diameters
  • Fission Products
  • Ground Zero
  • Hazardous Materials
  • Hazards
  • Materials
  • Measurement
  • Nuclear Fallout
  • Particles
  • Radioactive Materials
  • Radiochronometry

Fields of Study

  • Physics

Readers

  • Aerosol Science/Aerosol Physics
  • Explosive Engineering.
  • Nuclear and Radiation Engineering.