GAMMA RADIATION EXPOSURE

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Abstract:

The initial- and residual-gamma radiation exposures resulting from the surface detonation of megaton-yield-range thermonuclear devices were recorded in order to provide data for the determination and evaluation of the gamma-radiation hazards associated with such bursts. The following types of dosimeters were used as gamma radiation detectors photographic, chemical, and Radiac Set ANPDR-39. Instrument shelters were installed on reef, beach, and land locations to enable differentiation between initial- and residual-gamma exposures. Gamma-radiation exposure measurements were made at known distances from ground zero for each of five shots. The initial-gamma data has limitations the bulk of the data was completely lost due to the destruction of most of the initial-gamma stations. A comparison of the fragmentary initial-exposure data with scaled data shows reasonable agreement, although there is an insufficient quantity of data to analyze for effective mean free paths. Author

Author(s):
Dempsey, R. H. ; Larrick, Baraff, G. A. ; Johnson, O. E.
Author Organization(s):
ARMY ELECTRONICS LABS FORT MONMOUTH NJ
Descriptive Note:
Rept. for Mar-May 54,
Supplementary Note:
Report on Operation Castle Proj. 2.1 (U).
Annotation:
Gamma radiation Operation Castle.
Pagination:
0044

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
DASA-WT912
Monitor Series:
WT912
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*NUCLEAR EXPLOSIONS, *GAMMA RAYS, SURFACE BURST, HAZARDS, DOSIMETERS, INSTRUMENTATION, FALLOUT, GAMMA COUNTERS, RADIATION, RADIOGRAPHIC FILM
Field(s)/Group(s):
Nuclear Weapons, Radioactivity, Radioactive Wastes and Fission Products
Keyword(s):
AN PDR 39, CASTLE Operation
Report Date:
1959 Mar 16