Document Details


Title:
OPERATION REDWING-PROJECT 2.52: NEUTRON-INDUCED SOIL RADIOACTIVITY (DELETED)
Author(s):
COWAN, M [SANDIA LABORATORY, SANDIA, NM]
Subject Terms:
REDWING PROJECT; SOILS; GAMMA RADIATION; SAMPLING; YUMA EVENT; CHEROKEE EVENT; NEUTRONS; RESEARCH PROGRAMS; DOSE RATES; CALCULATION METHODS; SODIUM; MANGANESE
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:
1959 Dec 10
Declassification Status:
Sanitized
Document Pages:
0021
Accession Number:
NV0051077
Document Number(s):
WT1314EX
Originating Research Org.:
SANDIA LABORATORY, SANDIA, NM
OpenNet Entry Date:
1994 Aug 26
Description/Abstract:
SOIL SAMPLES WERE EXPOSED TO NEUTRON RADIATION FROM SHOT CHEROKEE TO H ELP ESTABLISH THE IMPORTANCE OF NEUTRON-INDUCED RESIDUAL GAMMA RADIATI ON [ ]. AFTER EXPOSURE AND RECOVERY, THE SAMPLES HAD NO DETECTABLE ACTIVITY BECAUSE THE SLANT RANGE TO THE NEAREST SAMPLE WAS NEARLY 3.5 MILES, DUE TO AN ERROR IN BOMB DROP. AFTER THIS FAILURE, AN EXPERIMENT WAS DESIGNED IN THE FIELD FOR SHOT YUMA IN ORDER THAT IN DUCED-ACTIVITY DATA COULD BE OBTAINED FOR A SOIL OTHER THAN NEVADA TES T SITE (NTS) SOIL. SAMPLES OF SODIUM, MANGANESE, AND CORAL SAND FROM SITE SALLY WERE EXPOSED ABOVE AND BELOW THE SURFACE AT A SLANT RANGE O F 120 YARDS. AT THIS SAME STATION, GAMMA DOSE RATES WERE MEASURED AND NEUTRON DETECTORS WERE EXPOSED BY PROJECT 2.51. THE FULL-FIELD GAMMA RADIATION MEASURED WAS DUE TO A COMBINATION OF FISSION-PRODUCT AND NE UTRON-INDUCED ACTIVITIES, THE ONLY IMPORTANT INDUCED ACTIVITY BEING DU E TO SODIUM 23 (NEUTRON, GAMMA) SODIUM 24. AT 1.1, 3.4, AND 10.9 HOUR S AFTER ZERO TIME, NEUTRON-INDUCED GAMMA RADIATION ACCOUNTED FOR 1.2, 1.1, AND 0.8 R/HR OF THE MEASURED 6.0, 2.2, AND 1.2 R/HR. THESE VALUE S WERE FOUND TO BE WITHIN 50 PERCENT OF NEUTRON-INDUCED DOSE RATES PRE DICTED BY THE METHOD OF REFERENCE 4.


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