CLOUD CHEMISTRY OF FALLOUT FORMATION
Abstract
Studies of fission-product gamma emanation shortly after fission (1 to 100 sec) have been initiated. The half-lives that will be established in this program, when used in conjunction with initial yields, will provide the fission-product yield history for calculational models. The studies undertaken include (1) an investigation of the transitive behavior of fission products from approximately 1 sec after fission, (2) experiments to establish recoil range as a parameter to use for identifying the sources of specific gamma rays, and (3) design of a steady-state tape system for catching and subsequently investigating recoil-fission products. Studies of diffusion of various nuclides in the CaO- A12O3-SiO2 system, the Na20-A1203Si02 system and Small Boy soil from the Navada test site have been made. A mathematical description of sorption of gaseous components by a particle, using condensation coefficients and condensed-state diffusion coefficients, is presented. This treatment suggests that condensation coefficients become important to the process only when they are lower than approximately 2 x 10 to the - 6th power.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 31, 1969
- Accession Number
- AD0690189
Entities
People
- Harry G. Staley
- John H. Norman
- Perrin Winchell