Accession Number:

AD0814721

Title:

CLOUD CHEMISTRY OF FALLOUT FORMATION

Descriptive Note:

Final rept.

Corporate Author:

GENERAL DYNAMICS SAN DIEGO CA GENERAL ATOMIC DIV

Personal Author(s):

Report Date:

1967-01-13

Pagination or Media Count:

92.0

Abstract:

A transpiration method was used to measure Henrys law constants as a function of temperature for cesium and rubidium dissolved in eutectic CaO-Al2O3- SiO2. Diffusivities of cesium, rubidium, potassium, sodium, indium, tin, and iodine in this matrix and other matrices were determined with either a vaporization method or a plane source-sectioning method. Results of calculations obtained by using Henrys law constant absorption, condensed state diffusion- controlled calculational model for fission product distribution in fallout are presented. This scheme leads to the conclusion that fission product fractionation is mainly a property of the fallout particle size distribution and the particle sizes under consideration. Also, deviations of these calculations from the Miller-model type of calculation are considered. The stabilities of the alkali metal oxides as determined by knudsen cell-mass spectrometric techniques are reported. The species Cs2Og and Cs2O2g, in particular, exhibit a much higher degree of stability than has been supposed. Electron microprobe studies of particles from a seeded Eniwetok detonation are described. Thermal and chemical histories of some particles are traced through dendritic forms, accretion events, occurrence of the seeding elements, etc. Results of some leaching studies, as they pertain to the condensed state diffusion-controlled, fission product absorption model, are presented.

Subject Categories:

  • Radioactivity, Radioactive Wastes and Fission Products
  • Fission Reactor Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE