FRACTIONATION VERSUS PARTICLE TYPE IN NUCLEAR SURFACE SHOT SMALL BOY. DIFFERENCES IN RADIOCHEMICAL COMPOSITION BETWEEN FRITTED AND SPHEROIDAL PARTICLES,
Abstract
Spheroidal and fritted particles of three size classes from close-in fallout samples collected from Small Boy were separated by hand. Analysis of spheroidal and fritted groups from the >1400 micron and the 350-700 micron size classes showed that spheroidal particles had higher specific activities than the fritted particles; however this difference was less pronounced for the smaller size groups. Contrary to reported observations on debris from a high-yield coral-surface burst, all groups showed comparable degrees of fractionation for radionuclides with rare-gas precursors. The Small Boy shot conditions were unique, however, and this homogeneity may not occur in more typical silicate- surface bursts. Ru106 and Sb125 were alike in behavior, but the data for these radionuclides do not correlate like those for rare-gas descendants. The necessity of adopting multidimensional correlations remains to be evaluated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 02, 1967
- Accession Number
- AD0660655
Entities
People
- E. C. Freiling
- J. N. Pascual
Organizations
- Naval Radiological Defense Laboratory