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Element/Target-Dependent Release Times and Release Efficiencies for the Proposed OREB Facility

Description: Experiments have been initiated which are designed to measure the time release characteristics of stable ion implanted species from selected refractory target materials which are potential candidates for forming radioactive beans at the proposed Oak Ridge Exotic Beam Facility. In this report, we provide thermal time release data and estimates of the efficiencies for releasing Cl from Zr{sub 5}Si{sub 3} and {sup 75}As, {sup 79}Br, and {sup 78}Se from Zr{sub 5}Ge{sub 3}. 14 refs., 1 fig., 1 tab.
Date: January 1, 1991
Creator: Alton, G. D.; Jones, C. M.; Olsen, D. K.; Carter, H. K. & Kormicki, J.
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Partner: UNT Libraries Government Documents Department
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Technical background information for the environmental and safety report, Volume 4: White Oak Lake and Dam

Description: This report has been prepared to provide background information on White Oak Lake for the Oak Ridge National Laboratory Environmental and Safety Report. The paper presents the history of White Oak Dam and Lake and describes the hydrological conditions of the White Oak Creek watershed. Past and present sediment and water data are included; pathway analyses are described in detail.
Date: March 1, 1982
Creator: Oakes, T. W.; Kelly, B. A.; Ohnesorge, W. F.; Eldridge, J. S.; Bird, J. C.; Shank, K. E. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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B(E2)up arrow for the 2/sub 1//sup +/ states of nuclei off the line of stability

Description: We have nearly completed a compilation of experimental results for the reduced electric quadrupole transition probability (B(E2)up arrow) between the 0/sup +/ ground state and the first 2/sup +/ state in even-even nuclei. This compilation together with certain simple relationships noted by other authors can be employed to make reasonable predictions of unmeasured B(E2)up arrow values. 6 refs., 4 figs., 1 tab.
Date: January 1, 1985
Creator: Raman, S. & Nestor, C. W. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Introductory remarks on double beta decay and nuclear physics

Description: The particle physics aspects of double beta decay and the theory of the phenomenon are briefly reviewed. The distinction between Dirac and Majorana neutrinos is drawn by comparing the neutrino that accompanies a negatively charged lepton in some hadronic decay process with that which accompanies a positively charged lepton in some other decay process. Two modes of double beta decay are examined - one emitting two neutrinos and the other emitting no neutrinos. What can be learned from the existi… more
Date: January 1, 1986
Creator: Rosen, S. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Monopole strength as a probe of nuclear shape mixing

Description: The monopole strength, MS, within a single set of nuclear shape excitations is compared with the MS between different shapes. After misconceptions are pointed out concerning the spin dependence of B(E2) values, MS properties are juxtaposed with gamma-ray and beta-decay properties of /sup 70/Se, /sup 96/Zr, /sup 102/Pd, and the N = 60 isotones to illustrate the utility of combined investigations and evidence is given for the observation of a two-phonon octupole multiplet. Finally, consideration … more
Date: August 17, 1987
Creator: Meyer, R.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Leach tests on grouts made with actual and trace metal-spiked synthetic phosphate/sulfate waste

Description: Pacific Northwest Laboratory conducted experiments to produce empirical leach rate data for phosphate-sulfate waste (PSW) grout. Effective diffusivities were measured for various radionuclides ({sup 90}Sr, {sup 99}Tc, {sup 14}C, {sup 129}I, {sup 137}Cs, {sup 60}Co, {sup 54}Mn, and U), stable major components (NO{sub 3}{sup {minus}}, SO{sub 4}{sup 2{minus}}, H{sub 3}BO{sub 3}, K and Na) and the trace constituents Ag, As, Cd, Hg, Pb, and Se. Two types of leach tests were used on samples of actual… more
Date: October 1, 1989
Creator: Serne, R. J.; Martin, W. J.; LeGore, V. L.; Lindenmeier, C. W.; McLaurine, S. B.; Martin, P. F. C. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Selenium and tellurium as carbon substitutes

Description: This review has summarized structure-activity studies with /sup 75/Se- and /sup 123m/Te-labeled radiopharmaceuticals in which the selenium or tellurium heteroatom has been inserted between carbon-carbon bonds. The agents that have been investigated in most detail include steroids for adrenal imaging and long-chain fatty acids, and a variety of other unique agents have also been studied. Because of the great versatility of the organic chemistry of selenium and tellurium, there is continuing inte… more
Date: January 1, 1980
Creator: Knapp, F. F. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Ocean floor sediment as a repository barrier: comparative diffusion data for selected radionuclides in sediments from the Atlantic and Pacific Oceans

Description: Effective diffusion coefficients for selected radionuclides have been measured in ocean floor sediments to provide data for the assessment of barrier effectiveness in subseabed repositories for nuclear waste. The sediments tested include illite-rich and smectite-rich red clays from the mid-plate gyre region of the Pacific Ocean, reducing sediment from the continental shelf of the northwest coast of North America, and Atlantic Ocean sediments from the Southern Nares Abyssal Plain and the Great M… more
Date: January 1, 1985
Creator: Schreiner, F.; Sabau, C.; Friedman, A. & Fried, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Nuclear medicine technology. Progress report for quarter ending September 30, 1979

Description: Adrenal uptake in rats of /sup 117m/Sn-labeled 23-(trimethyl stanna)-24-nor-5..cap alpha..-cholan-3..beta..-o1 is demonstrated. The adrenal:blood and adrenal:liver ratios were 33:1 and 9:1, only one day after intravenous administration. A variety of /sup 117m/Sn-labeled steroids with structural modifications were also prepared to determine their effects on the adrenal uptake of these unusual steroids. Structural features required for significant adrenal uptake were determined. The diffusion cha… more
Date: January 1, 1979
Creator: Knapp, F. F. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Nuclear medicine technology progress report for quarter ending June 30, 1979

Description: Diffusion chamber assay system studies on the relative cytotoxicity and target cell uptake of /sup 195m/Pt-labeled cis- and trans-dichlorodiammineplatinum(II) (cis- and trans-DDP) are reported. These two agents are excellent candidates for such studies since cis-DDP is an established potent antitumor agent while the trans-isomer exhibits little antitumor activity. The KB tumor cell population in chambers from the cis-DDP-treated animals decreased while the cell population in chambers from the t… more
Date: August 1, 1979
Creator: Knapp, F. F. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The use of AMS to the biomedical sciences

Description: The Center for Accelerator Mass Spectroscopy (AMS) began making AMS measurements in 1989. Biomedical experiments were originally limited by sample preparation techniques, but we expect the number of biomedical samples to increase five-fold. While many of the detailed techniques for making biomedical measurements resemble those used in other fields, biological tracer experiments differ substantially from the observational approaches of earth science investigators. The role of xenobiotius in init… more
Date: April 1, 1991
Creator: Vogel, J.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Dosimetry of Auger emitters: Physical and phenomenological approaches

Description: Recent radiobiological studies have demonstrated that Auger cascades can cause severe biological damage contrary to expectations based on conventional dosimetry. Several determinants govern these effects, including the nature of the Auger electron spectrum; localized energy deposition; cellular geometry; chemical form of the carrier; cellular localization, concentration, and subcellular distribution of the radionuclide. Conventional dosimetry is inadequate in that these considerations are ignor… more
Date: January 1, 1987
Creator: Sastry, K. S. R.; Howell, R. W.; Rao, D. V.; Mylavarapu, V. B.; Kassis, A. I.; Adelstein, S. J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Long-term uncertainty in radiological performance assessments of low-level waste facilities at Savannah River Site

Description: Radiological performance assessments are being conducted for the Saltstone Disposal Facility and the E-Area Vaults at the Savannah River Site near Aiken, South Carolina. Saltstone is a solidified waste form which will contain very low levels of radionuclides but considerable levels of nitrate. The E-Area Vaults will contain solid, radioactively contaminated waste. Preliminary results of the assessments indicate that adequate performance will be very sensitive to the degradation scenario adopted… more
Date: January 1, 1991
Creator: McDowell-Boyer, L.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Health and safety research division. Nuclear medicine technology progress report for period ending March 31, 1979

Description: The preparation of a unique class of trimethyltin-substituted steroids is described that were designed because of the potential use of the /sup 117m/Sn-labeled analogs for adrenal imaging. The trimethyltin-substituted steroids were readily prepared on the microscale in yields ranging from 40 to 80%. Studies with the /sup 123m/Te-labeled fatty acids have continued, and radiolabeled 6-telluraheptadecanoic acid and 11-telluraheptadecanoic acid have shown pronounced heart uptake in rats. These resu… more
Date: August 1, 1979
Creator: Knapp, F. F. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Basalt-radionuclide distribution coefficient determinations. FY-1979 annual report

Description: Experimental radionuclide distribution coefficients (Kd') were determined for Pomona, Flow E, Umtanum basalts, and secondary mineralization associated with Pomona basalt at 23/sup 0/, 60/sup 0/ and 150/sup 0/C. Radionuclides used were /sup 75/Se, /sup 85/Sr, /sup 99/Tc, /sup 125/I, /sup 135/Cs, /sup 226/Ra, /sup 237/Np, /sup 238/U, /sup 241/Am, and /sup 241/Pu. Solution oxygen contents were controlled by the basalt/groundwater system (Eh = 600 to 700 mV), and were high (8.2 to 8.4 mg/l) at 23/s… more
Date: September 1, 1980
Creator: Ames, L.L. & McGarrah, J.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Application of nondestructive assay technology in Oak Ridge National Laboratory's waste management program

Description: Waste characterization is the process whereby physical properties and chemical composition of waste are determined. Waste characterization is an important element of a waste certification program in that it provides information which is necessary to certify that waste meets the acceptance criteria for storage, treatment, or disposal. Department of Energy (DOE) Order 5820.2A and WIPP-DOE-069 list and describe the germane waste form, package, and container criteria for the storage of both solid l… more
Date: January 1, 1990
Creator: Schultz, F. J.; Smith, M. A.; Brandenburg, R. W.; Caylor, B. A.; Coffey, D. E.; Hensley, D. C. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Nuclear Medicine Technology Progress Report for Quarter Ending June 30, 1980

Description: Results of experiments demonstrated that the alkyl portion of 9-telluraheptadecanoic acid (9-THDA) is retained in the myocardial tissue of rats to the same extent as radioactivity from /sup 123m/Te-9-THDA. Tissue distribution experiments in rats one hr after injection of 10-(/sup 14/C)-9-telluraheptadecanoic acid were compared with the results of a parallel study using /sup 123m/Te-9-THDA. The results indicate that the alkyl region of 9-THDA is retained in the myocardium and that labeling of th… more
Date: January 1, 1981
Creator: Knapp, Furn F., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Nuclear medicine technology. Progress report, quarter ending March 31, 1980

Description: The successful detection of experimentally produced myocardial infarctions in rats and dogs using /sup 123m/Te-9-telluraheptadecanoic acid (9-(/sup 123m/Te)-THDA) is described. Preferential localization of radioactivity in normal myocardial tissue of rats that had experimentally produced infarctions was also demonstrated by tissue distribution studies following injection of 9-(/sup 123m/Te)-THDA. The effects of chain length on the myocardial uptake of /sup 75/Se-labeled long-chain fatty acids w… more
Date: October 1, 1980
Creator: Knapp, F. F. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radionuclide reactions with groundwater and basalts from Columbia River basalt formations

Description: Chemical reactions of radionuclides with geologic materials found in Columbia River basalt formations were studied. The objective was to determine the ability of these formations to retard radionuclide migration from a radioactive waste repository located in deep basalt. Reactions that can influence migration are precipitation, ion-exchange, complexation, and oxidation-reduction. These reactions were studied by measuring the effects of groundwater composition and redox potential (Eh) on radionu… more
Date: June 1, 1981
Creator: Barney, G.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Nuclear Medicine Technology. Progress Report for Quarter Ending September 30, 1978

Description: A unique class of radiopharmaceuticals labeled with the /sup 117m/Sn nuclide has been developed. The attractive properties of /sup 117m/Sn include a 14-day physical half-life and the emission of a single ..gamma..-photon with an optimal energy of 159 keV. A specialized apparatus was designed for the conversion of metallic /sup 117m/Sn to /sup 117m/SnCl/sub 4/ which was subsequently converted to a variety of useful /sup 117m/Sn-labeled organotin intermediates. The availability of this unique app… more
Date: February 1, 1979
Creator: Knapp, Furn F., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Exotic nuclear structures and decays: new nuclear collective phenomena

Description: Studies of the properties of exotic nuclei have revealed a surprising richness and diversity in their shapes, structures, and decay modes far exceeding our understandings and expectations of even a decay ago. From studies of far-off-stability exotic nuclei have come evidence for the coexistence of different nuclear shapes in the same nucleus, new regions of unusually large deformation, new ground-state phase transitions from one shape to another, new magic numbers but now for deformed shapes, a… more
Date: January 1, 1986
Creator: Hamilton, J.H.
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Partner: UNT Libraries Government Documents Department
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Integro-differential equation analysis and radioisotope imaging systems. Research proposal. [Testing of radioisotope imaging system in phantoms]

Description: Design modifications of a five-probe focusing collimator coincidence radioisotope scanning system are described. Clinical applications of the system were tested in phantoms using radioisotopes with short biological half-lives, including /sup 75/Se, /sup 192/Ir, /sup 43/K, /sup 130/I, and /sup 82/Br. Data processing methods are also described. (CH)
Date: March 9, 1976
Creator: Hart, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radiopharmaceuticals and tumor detection. [Evaluation of radiopharmaceuticals for tumor scintiscanning]

Description: A number of radiopharmaceuticals are evaluated as to their usefulness for the reliable localization of malignant tumors by radioisotope scanning. Compounds discussed include /sup 75/Se-selenomethionine, /sup 32/P-phosphate, /sup 99m/Tc-phosphate, /sup 67/Ga-citrate, and /sup 111/In-bleomycin. It is pointed out that no ideal agent has yet been found and that considerable difficulties exist in comparing one clinical series with another. (CH)
Date: January 1, 1976
Creator: Ansari, A. N. & Atkins, H. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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