Fallout Studies, Cloud Chemistry
Abstract
The measured absorptions per atmosphere between 1260 deg and 1400 deg C of Cs, Ru, Sb, Te, and Mo in CaO-A12O3-SiO2 samples with varying SiO2 content are, respectively, 1000 to 100000, 10, 10000, 1, and 100000 to 10000 times the ideal values as calculated by Miller. Attention is called to the effect of gaseous ions on chemistry occurring during fallout formation. Diffusivities of Cs, Sb, Te, and Mo are reported as determined in diffusion-limited evaporation studies and plane-source-technique studies. Variation of diffusivity of Sb with silicate composition was studied. Mass-spectrometric studies of the thermodynamics of vaporization of the alkaline earth oxides are reported. Gaseous species whose thermodynamic properties are reported were found to include M, MO, M2O, and M2O2 species. Microprobe studies of fallout particles revealed concentration gradients for many elements in fallout particles. A discussion is presented of the importance of thermodynamic properties of fission products and silicates and the kinetics associated with the fission-product absorption process, with particular emphasis on condensed-state diffusion and particle accretion events.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 29, 1965
- Accession Number
- AD0614997
Entities
People
- A. B. Riedinger
- G. Graves
- H. G. Staley
- H. J. Norman
- M. Kirkbride
- M. Tagami
- P. Winchell
- W. E. Bell
Organizations
- General Dynamics