Operation Greenhouse. Scientific Director's report of atomic weapon tests at Eniwetok, 1951. Annex 6. 8. cloud radiation field

Technical Report · Mon Apr 01 00:00:00 EST 1985

OSTI ID:7248965

Koch, G E

The object of this study was to measure the relationship between the spatial distribution of the radioactive fission products and the resultant radioactive field in an atomic-bomb cloud. Data obtained by the high-intensity rate meters and the jet impactors lead to the following conclusions: (1) There is a definite correlation between the particulate fission-particle density and the gamma-radiation intensity measured within the cloud; (2) The effective energy of the gamma radiation within the atomic bomb cloud is quite low, being of the order of 200 keV; (3) The structure of the atomic bomb cloud resembles a chimney with puffs of radioactive matter in the flue of the chimney; (4) The average roentgen dose accumulated by a plane passing through a cloud of the type tested in the Dog and Easy Shots 210 sec after bomb detonation is approximately 125 r. The average contamination on a plane after passing through a cloud is between 10 and 20 r/hr; no contamination could be detected within the plane; (5) The gamma-radiation effects extend beyond the limits of the particulate radioactive fission products; and, (6) The visible cloud adn the fission-product particulate cloud from the bomb do not coincide exactly; the visible cloud extended beyond the fission-product-cloud in those instances where data were obtained.

• Research Organization: Naval Radiological Defense Lab., San Francisco, CA (USA)
• OSTI ID: 7248965
• Report Number(s): AD-A-995291/2/XAB
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
GREENHOUSE PROJECT
NUCLEAR EXPLOSIONS
FISSION PRODUCTS
RADIOACTIVE CLOUDS
CONTAMINATION
DETONATIONS
MEASURING INSTRUMENTS
PARTICULATES
RADIOACTIVITY
SPATIAL DISTRIBUTION
VISIBLE SPECTRA
CLOUDS
DISTRIBUTION
EXPLOSIONS
ISOTOPES
MATERIALS
PARTICLES
RADIOACTIVE MATERIALS
SPECTRA
450202* - Explosions & Explosives- Nuclear- Weaponry- (-1989)