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Title:
ATOLL SOIL TYPES IN RELATION TO THE DISTRIBUTION OF FALLOUT RADIONUCLIDES
Author(s):
HELD, E E [UNIVERSITY OF WASHINGTON, SEATTLE]; GESSEL, S P [UNIVERSITY OF WASHINGTON, SEATTLE]; WALKER, R B [UNIVERSITY OF WASHINGTON, SEATTLE]
Subject Terms:
RESEARCH PROGRAMS; DATA; COBALT 60; PRASEODYMIUM 144; FALLOUT; LICHENS; COMPARATIVE EVALUATIONS; CERIUM 144; GAMMA SPECTRA; PROCEDURES; PHOTOGRAPHS; DEPTH DOSE DISTRIBUTIONS; ANTIMONY 125; ACTIVITY LEVELS; SOILS; STRONTIUM 90; ROOT ABSORPTION; CALCIUM; ZINC 65; GRAPHS; CESIUM 137; BRAVO EVENT; LEACHING; SAMPLING; AUTORADIOGRAPHY; CASTLE OPERATION
Document Location:
Location - DOE/NNSA 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 - NTA@NV.DOE.GOV
Document Type:
REPORT
Publication Date:
1965 Aug 31
Declassification Status:
Never classified
Document Pages:
0047
Accession Number:
NV0067540
Document Number(s):
UWFL92
Originating Research Org.:
UNIVERSITY OF WASHINGTON, SEATTLE
OpenNet Entry Date:
1994 Aug 26
OpenNet Modified Date:
2008 Mar 31
Description/Abstract:
THE REDISTRIBUTION OF RADIONUCLIDES IN ATOLL SOILS FOLLOWING FALLOUT F ROM A NUCLEAR DEVICE IS DESCRIBED. THE SOILS ARE CALCAREOUS, CONTAININ G NO INORGANIC COLLOIDS, AND THEIR EXCHANGE CAPACITY IS DIRECTLY RELAT ED TO ORGANIC CONTENT. COMPARISON OF GAMMA-RAY SPECTRA OF DEPTH INCRE MENTS FROM YOUNG AND OLD SOILS SHOWS THAT CESIUM 137 AND ANTIMONY 125 MOVE MOST READILY IN OLD SOIL, WHILE THE PRINCIPAL GAMMA-EMITTING RADI ONUCLIDE MOVING IN YOUNG SOIL IS ANTIMONY. STRONTIUM 90 MOVES IN BOTH OLD AND NEW SOILS, AND QUANTITATIVE DIFFERENCES IN VERTICAL MOVEMENT B ETWEEN SOIL TYPES IS OBSCURED BY THE HIGHLY VARIABLE SURFACE DISTRIBUT ION OF THE RADIONUCLIDES. THERE IS A VERTICAL GRADIENT IN THE DISTRIBU TION OF RADIONUCLIDES EVEN WITHIN THE SURFACE INCH. LITTER REDEPOSITS CESIUM 137 AND STRONTIUM 90 AT THE SOIL SURFACE AND BIRD DROPPINGS HAV E ADDED ZINC 65 AND COBALT 60.


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