Document Details


Title:
COMPARATIVE BEHAVIOR OF PLUTONIUM AND AMERICIUM IN THE EQUATORIAL PACIFIC
Subject Terms:
COMPARATIVE EVALUATIONS; PLUTONIUM 239; AMERICIUM 241; SAMPLING; SEAWATER; PLUTONIUM 240; RADIOACTIVITY; TRANSURANIUM ELEMENTS; FISSION PRODUCTS; GAMMA SPECTROSCOPY
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:
1983 Mar 07
Declassification Status:
Unknown
Document Pages:
0047
Accession Number:
NV0049200
Originating Research Org.:
LAWRENCE LIVERMORE LABORATORY, U. OF CA
OpenNet Entry Date:
1994 Aug 26
Description/Abstract:
INVENTORIES OF PLUTONIUM-239+240 AND AMERICIUM-241 GREATLY IN EXCESS O F GLOBAL FALLOUT LEVELS PERSIST IN THE BENTHIC ENVIRONMENTS OF BIKINI AND ENEWETAK ATOLLS. QUANTITIES OF PLUTONIUM-239+240 AND LESSER AMOU NTS OF AMERICIUM-241 ARE CONTINUOUSLY MOBILIZING FROM THESE SEDIMENTAR Y RESERVIORS. THE AMOUNT OF PLUTONIUM-239+240 MOBILIZED TO SOLUTION A T THE ATOLLS CAN BE PREDICTED FROM A DISTRIBUTION COEFFICIENT K(D) OF 2.3 X 10EO5 AND THE MEAN SEDIMENT CONCENTRATIONS. THE MOBILIZED PLUT ONIUM 239+240 HAS SOLUTE-LIKE CHARACTERISTICS AND DIFFERENT VALENCE ST ATES COEXIST IN SOLUTION--THE LARGEST FRACTION OF THE SOLUBLE PLUTONIU M IS IN AN OXIDIZED FORM ( +V,VI ). THE ADSORPTION OF PLUTONIUM TO SE DIMENTS IS NOT COMPLETELY REVERSIBLE BECAUSE OF CHANGES THAT OCCUR IN THE RELATIVE AMOUNTS OF THE MIXED OXIDATION STATES IN SOLUTION WITH T IME. FURTHER, ANY CHARACTERISTICS OF PLUTONIUM-239+240 DESCRIBED AT O NE LOCATION MAY NOT NECESSARILY BE RELEVANT IN DESCRIBING ITS BEHAVIOR ELSEWHERE FOLLOWING MOBILIZATION AND MIGRATION. THE RELATIVE AMOUNT S OF AMERICIUM-241 TO PLUTONIUM-239+240 IN THE SEDIMENTARY DEPOSITS AT ENEWETAK AND BIKINI MAY BE ALTERED IN FUTURE YEARS BECAUSE OF MOBILI ZATION AND RADIOLOGICAL DECAY. MOBILIZATION OF PLUTONIUM-239+240 IS N OT A PROCESS UNIQUE TO THESE ATOLLS, AND QUANTITIES IN SOLUTION DERIVE D FROM SEDIMENTARY DEPOSITS CAN BE FOUND AT OTHER GLOBAL SITES. THESE STUDIES IN THE EQUATORIAL PACIFIC HAVE SIGNIFICANCE IN ASSESSING THE LONG-TERM BEHAVIOR OF THE TRANSURANICS IN ANY MARINE ENVIRONMENT.


<< Return to Search Results