Scientific director's report of atomic weapons tests at Eniwetok, 1951. Annex 6. 4. Fall-out phenomenology
An experiment was designed to measure the fall-out pattern and to study the nature of the fall-out particles from low-level, experimental atomic bomb air bursts in order to provide data for the appraisal of the potential health hazard from external and internal exposure to the fall-out products. Samples of the fall-out from Dog and Easy Shots were obtained. A study of the size distribution of the active particles was made by size fractionation and radioautographic techniques. Radiochemical analyses of the fallout were made. In addition, a study of the structure and composition of the fall-out particles was made. It was determined that the bulk of the radioactivity in the fall-out was associated with particles greater than 5 microns in diameter. The highest radiation levels were found on Bogallua at E + 30 min. The reading was about 30 r/hr as measured from a helicopter hovering 10 to 20 ft above the island.
- Research Organization:
- Naval Radiological Defense Lab., San Francisco, CA (USA)
- OSTI ID:
- 6448660
- Report Number(s):
- AD-483423/0
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
450202* -- Explosions & Explosives-- Nuclear-- Weaponry-- (-1989)
510302 -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- Terrestrial Ecosystems & Food Chains-- (-1987)
54 ENVIRONMENTAL SCIENCES
CHEMICAL ANALYSIS
CHEMISTRY
DISTRIBUTION
DOSE RATES
EXPLOSIONS
FALLOUT
GREENHOUSE PROJECT
HAZARDS
HEALTH HAZARDS
NUCLEAR EXPLOSIONS
PARTICLE SIZE
PERSONNEL
RADIATION HAZARDS
RADIOCHEMISTRY
SIZE
SPATIAL DISTRIBUTION
WIND