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Autoradiographic study of actinide sorption on climax stock granite

Description: An autoradiographic technique that employed an arrangement for placing in firm contact Polaroid sheet film, a scintillator screen, and the radioactive face of a specimen was applied to a study of the sorption of americium, neptunium, plutonium, and uranium on Climax Stock granite under varying conditions of pH and Eh. Qualitative agreement was found between the sorption of americium on crushed, pure minerals and on the minerals comprising the specimen of Climax Stock granite. The observations a… more
Date: June 1, 1980
Creator: Beall, G.W.; O'Kelley, G.D. & Allard, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Experimental studies of actinides in molten salts

Description: This review stresses techniques used in studies of molten salts containing multigram amounts of actinides exhibiting intense alpha activity but little or no penetrating gamma radiation. The preponderance of studies have used halides because oxygen-containing actinide compounds (other than oxides) are generally unstable at high temperatures. Topics discussed here include special enclosures, materials problems, preparation and purification of actinide elements and compounds, and measurements of v… more
Date: June 1, 1985
Creator: Reavis, J.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Nuclear Science Division annual report, July 1, 1981-September 30, 1982

Description: This report summarizes the scientific research carried out within the Nuclear Science Division between July 1, 1981, and September 30, 1982. Heavy-ion investigations continue to dominate the experimental and theoretical research efforts. Complementary programs in light-ion nuclear science, in nuclear data evaluation, and in the development of advanced instrumentation are also carried out. Results from Bevalac experiments employing a wide variety of heavy ion beams, along with new or upgraded de… more
Date: June 1, 1983
Creator: Mahoney, J. (ed.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Personnel neutron dosimetry studies at the Lawrence Livermore National Laboratory

Description: A study was conducted to determine the effect of phantom size, shape and composition on the response of an albedo neutron dosimeter. The most important feature was the shape. The dose equivalent rate from a californium neutron source was determined. Ten different dose rates were determined which varied from 2.39 to 3.02 rem/h for the CF source used. (ACR)
Date: June 9, 1981
Creator: Hankins, D.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Comparison of acid leachate and fusion methods to determine plutonium and americium in environmental samples

Description: The Analytical Chemistry Laboratory at Argonne National Laboratory performs radiochemical analyses for a wide variety of sites within the Department of Energy complex. Since the chemical history of the samples may vary drastically from site to site, the effectiveness of any analytical technique may also vary. This study compares a potassium fluoride-pyrosulfate fusion technique with an acid leachate method. Both normal and high-fired soils and vegetation samples were analyzed for both americium… more
Date: June 1, 1992
Creator: Smith, L. L.; Markun, F. & TenKate, T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Long-range fission fragments from radiogenic lead. [Fission of nuclides with Z approx = 114]

Description: Fission tracks with a range 19 percent longer than tracks produced by uranium fission fragments were observed on mylar foils after a three-year underground (100 m.w.e.) exposure to 3600 cm/sup 2/ of radiogenic lead. Ordinary lead which was simultaneously exposed to mylar foils under the same conditions yielded a background effect of only 3 percent of the effect from radiogenic lead. The observed long-range tracks are best explained as resulting from the spontaneous fission of natural, superheav… more
Date: June 1, 1978
Creator: Maly, J. & Walz, D.R
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Measurement of total alpha activity of neptunium, plutonium, and americium in highly radioactive Hanford waste by iron hydroxide precipitation and 2-heptanone solvent extraction

Description: An improved method has been developed to concentrate the major alpha-emitting actinide elements neptunium, plutonium, and americium from samples with high salt content such as those resulting from efforts to characterize Hanford storage tank waste. Actinide elements are concentrated by coprecipitation of their hydroxides using iron carrier. The iron is removed by extraction from 8M HCI with 2-heptanone. The actinide elements remain in the aqueous phase free from salts, iron, and long-lived fiss… more
Date: June 1, 1992
Creator: Maiti, T. C. & Kaye, J. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Research and Engineering Division semiannual report. KK Process Development and Technology, November 1, 1975--April 30, 1976. [Pu processing; fractionization; encapsulation; wastes; uptake; hydrology; public protection]

Description: This document is the final semiannual report of the activities supported by KK funds in the areas of process development. These activities have the goal of improving the performance of the ARHC plutonium processing and waste management programs. (DLC)
Date: June 1, 1976
Creator: Manry, C. W. & Cramer, G. W. (eds.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Safety analysis report for packaging: neutron shipping cask, model 0. 5T

Description: The Safety Analysis Report for Packaging demonstrates that the neutron shipping cask can safely transport, in solid or powder form, all isotopes of uranium, plutonium, americium, curium, berkelium, californium, einsteinium, and fermium. The shipping cask and its contents are described. It also evaluates transport conditions, structural parameters (e.g., load resistance, pressure and impact effects, lifting and tiedown devices), and shielding. Finally, it discusses compliance with Chapter 0529 o… more
Date: June 11, 1976
Creator: Peterson, R. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Waste isolation safety assessment program. Task 4. Third contractor information meeting

Description: The Contractor Information Meeting (October 14 to 17, 1979) was part of the FY-1979 effort of Task 4 of the Waste Isolation Safety Assessment Program (WISAP): Sorption/Desorption Analysis. The objectives of this task are to: evaluate sorption/desorption measurement methods and develop a standardized measurement procedure; produce a generic data bank of nuclide-geologic interactions using a wide variety of geologic media and groundwaters; perform statistical analysis and synthesis of these data;… more
Date: June 1, 1980
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Prospects for research with radioactive beams and targets

Description: Research with heavy ion (HI) beams has become a major field of physics. Nuclei of all naturally occuring elements and isotopes can be accelerated to energies as high as 2 GeV/A with even higher energies expected in the future. With the advent of relativistic heavy ion accelerators and the development of high intensity on-line isotope separators it has now become possible to explore a new dimension in nuclear physics based on the production and application of radioactive ion beams (RIB). More th… more
Date: June 1, 1984
Creator: Nitschke, J.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Removal of transuranics from Johnston Island soil by fractional classification

Description: The following conclusions were reached as a result of the research conducted with the TRUclean process on Johnston Island: Processed materials will have a total TRU activity of less than 500 Bq/Kg. Approximately 90% of the TRU activity in coral/soil is removed by a single pass through the fractional classification process. A volume reduction of greater than 90% of the original contaminated volume can be achieved with the returned ''clean'' volume less than or equal to the cleanup criteria. Repr… more
Date: June 7, 1987
Creator: Sunderland, N.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Evaluation of extractants and chelating resins in polishing actinide-contaminated waste streams

Description: At the Los Alamos National Laboratory Plutonium Facility, anion exchange is used for recovering plutonium from nitric acid solutions. Although this approach recovers >99%, the trace amounts of plutonium and other actinides remaining in the effluent require additional processing. We are doing research to develop a secondary unit operation that can directly polish the effluent so that actinide levels are reduced to below the maximum allowed for facility discharge. We selected solvent extraction, … more
Date: June 1, 1991
Creator: Schreiber, S. B.; Dunn, S. L. & Yarbro, S. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geochemical information for the West Chestnut Ridge Central Waste Disposal Facility for low-level radioactive waste

Description: Geochemical support activities for the Central Waste Disposal Facility (CWDF) project included characterization of site materials, as well as measurement of radionuclide sorption and desorption isotherms and apparent concentration limit values under site-relevant laboratory test conditions. The radionuclide sorption and solubility information is needed as input data for the pathways analysis calculations to model expected radioactivity releases from emplaced waste to the accessible environment … more
Date: June 1, 1984
Creator: Seeley, F. G. & Kelmers, A. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Richland Five-year 02 R&D Program

Description: This program is directed to the production of higher weight plutonium isotopes and transplutonium isotopes from the irradiation of transuranic elements, particularly plutonium. Since production of Pu-238 from the irradiation of Np-237 and Am-241 is the subject of Mission 4, Pu-238 Program, it is excluded from this Mission. Specific products which are of prime interest are Cm-244 and plutonium containing a high concentration of either the Pu-240 isotope or the Pu-242 isotope. Because of the pote… more
Date: June 30, 1968
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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/sup 3/He and /sup 20/Ne classical atomic scattering cross sections for theta/sub Lab/ = 90/sup 0/ and 138/sup 0/ using the moliere approximation of the Thomas-Fermi potential. [500 to 5000 eV]

Description: The Moliere approximation to the Thomas-Fermi screening function was used in a screened Coulomb potential to calculate tables of differential scattering cross sections for laboratory scattering angles of 90 and 138/sup 0/. Data are provided for incident ions of /sup 3/He/sup +/ and /sup 20/Ne/sup +/ as a function of energy (0.05 to 5.0 keV) and target atom. 3 references.
Date: June 1, 1979
Creator: Nelson, G. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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