Document Details


Title:
OPERATION SUN BEAM, SHOT SMALL BOY, PROJECT OFFICERS REPORT - PROJECT 2.15, SHIELDING EFFECTIVENESS OF ENCLOSURE SHIELDS IN A FALLOUT FIELD ( U )
Subject Terms:
DOMINIC II OPERATION; SMALL BOY EVENT; SHIELDING; GAMMA DOSIMETRY; RESEARCH PROGRAMS; DATA; DOSE RATES
Document Location:
Location - NNSA/NSO Nuclear Testing Archive Address - P.O. Box 98521 City - Las Vegas State - NV Zip - 89193-8521 Phone - (702)794-5106 Fax - (702)862-4240 Email - CIC@NV.DOE.GOV
Document Type:
REPORT
Publication Date:
1963 Apr 30
Declassification Status:
Declassified
Document Pages:
0082
Accession Number:
NV0051263
Document Number(s):
WT2221
Originating Research Org.:
BALLISTICS RESEARCH LABORATORY
OpenNet Entry Date:
1994 Aug 26
Description/Abstract:
SEVERAL ENCLOSURE SHIELDS WERE EXPOSED TO SHOT SMALL BOY AT A DOWNWIND DISTANCE OF APPROXIMATELY 16,000 FEET. THESE SHIELDS CONSISTED OF HOL LOW-WALLED STEEL CUBES AND SPHERES OF SEVERAL OVERALL DIMENSIONS. GAMM A-RAY DOSE RATE DUE TO FALLOUT WAS MEASURED FOR A PERIOD OF 48 HOURS I NSIDE AND OUTSIDE THESE SHIELDS, AND THE TRANSMISSION FACTOR OF EACH S HIELD AS A FUNCTION OF TIME WAS DETERMINED. THE TRANSMISSION FACTOR IS DEFINED AS THE RATIO OF INSIDE TO OUTSIDE DOSE. THE DOSE MEASUREMENTS WERE DETERMINED WITH DETECTORS PLACED INSIDE THE SHIELDS AND AT FIXED POSITIONS ABOUT THE AREA SURROUNDING THESE SHIELDS. THE OUTSIDE OF FR EE-FIELD MEASUREMENTS WERE COMPARED WITH PORTABLE SURVEY METER READING S TAKEN AT LATER TIMES FOLLOWING THE BURST. THE CHANGE IN TRANSMISSION FACTOR AS A FUNCTION OF TIME IS DISCUSSED.


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