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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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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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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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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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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.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Delayed proton activities produced in /sup 24/Mg + Ca and /sup 28/Si + Ca reactions

Description: A search for new delayed proton emitters in /sup 24/Mg and /sup 28/Si bombardments of Ca targets has been conducted to extend knowledge about the proton drip line in the A = 60 to 65 mass region. Definitive evidence for the A = 4n + 1, T/sub z/ = -3/2 nuclide /sup 61/Ge is presented, but a search for the next member in this series, /sup 65/Se, proved fruitless. 6 refs., 3 figs.
Date: June 1, 1986
Creator: Hotchkis, M. A. C.; Moltz, D. M.; Reiff, J. E.; Blonnigen, F.; Lang, T. F.; Xu, X. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Double beta decay: theory

Description: A summary is given of interesting particle physics and nuclear physics issues in the theory of double beta decay. 25 references.
Date: January 1, 1984
Creator: Haxton, W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Sulfur and selenium isotope separation by distillation. [ch/sub 3/SH, dimethy selenide, H/sub 2/Se]

Description: Sulfur and selenium isotopes are used for labeled compounds and as precursors for radioisotope production; however, both limited availability and high costs are problems. A new method is needed for large-scale separation of these isotopes. Experimental distillation columns were used to measure isotopic separations for sulfur and selenium compounds. The maximum total isotope separation of /sup 32/S vs. /sup 34/S were 1.127 for H/sub 2/S, 1.048 for COS, 0.838 for SF/sub 4/, and 1.058 for CH/sub 3… more
Date: January 1, 1988
Creator: Mills, T. R.; McInteer, B. B. & Montoya, J. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Isotopic Analysis of Dimethyl Selenide

Description: The separated isotopes of selenium may be used as stable precursors for the synthesis of radio-bromine isotopes for positron emitter tomographic diagnostics. As part of a project to find a suitable distillation method for separating selenium isotopes, the need arose to study the organo-metallic compound dimethyl selenide. The complexity of the mass spectrum tended to obscure the isotope effect with 35 major peaks being measured. A least-squares fitting procedure was developed for the 13 fragmen… more
Date: January 1, 1984
Creator: McInteer, B.B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Nuclear double beta decay and the evidence for lepton number non-conservation

Description: The reported ratio of double beta decay of the isotopes /sup 128/Te and /sup 130/Te measured by geochemical techniques, coupled with an assumed equality of the nuclear matrix elements, would indicate the existence of a neutrinoless branch indicative of lepton number violation. A large-scale shell model calculation of the nuclear matrix elements was performed; they were found to be approximately equal. However, the absolute rates calculated for the normal, two-neutrino branch alone are 49 times … more
Date: January 1, 1980
Creator: Stephenson, G. J. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Identification of key radionuclides in a nuclear waste repository in basalt

Description: Radionuclides were identified which appear to pose the greatest potential hazard to man during long-term storage of nuclear waste in a repository mined in the Columbia Plateau basalt formation. The criteria used to select key radionuclides were as follows: quantity of radionuclide in stored waste; biological toxicity; leach rate of the wastes into groundwater; and transport rate via groundwater flow. The waste forms were assumed to be either unreprocessed spent fuel or borosilicate glass contai… more
Date: May 1, 1980
Creator: Barney, G. Scott & Wood, Bernard J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Oblate-prolate shape competition in Z = 34 to 38 nuclei

Description: Now magic numbers for deformed shapes are established at N and Z of 38 and N of 60. These shell gaps at large deformation (..beta.. approx. = 0.4) are magic when the proton and neutron shell gaps reinforce each other. Other shell gaps for 34 and 36 are predicted to be important for oblate deformation. The competition between these oblate and the 38 prolate gaps as well as the 40 spherical shell gap are considered. In /sup 71/Se coexistence of oblate (..beta.. approx. = -0.24) and large prolate … more
Date: September 1, 1987
Creator: Hamilton, J. H.; Ramayya, A. V.; Zhao, X.; Maguire, C. F.; Ma, W. C.; KormickI, J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Fully automated radiochemical preparation system for gamma-spectroscopy on fission products and the study of the intruder and vibrational levels in /sup 83/Se

Description: AUTOBATCH was developed to provide a usable source of short-lived neutron-rich nuclides through chemical preparation of the sample from fission products for detailed gamma-ray spectroscopy, which would complement the output of on-line isotope separators. With AUTOBATCH the gamma rays following the ..beta../sup -/ decay of /sup 83/As were studied to determine the ground state spin and parity of /sup 83/As to be 5/2/sup -/; the absolute intensity of the ..beta../sup -/ branch from /sup 83/As to /… more
Date: October 1, 1983
Creator: Lien, O. G., III
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigaton of the beta strength function at high energy: gamma-ray spectroscopy of the decay of 5. 3-s /sup 84/As to /sup 84/Se

Description: The beta strength function up to approximately 8.6 MeV for the system /sup 84/As(..beta../sup -/)/sup 84/Se was investigated. It was found that it is not possible to satisfactorily describe S/sub ..beta../ by a statistical model. From the /sup 84/As decay scheme an experimental beta strength function was deduced. Additional information on the beta transition intensity is obtained from the gross coincidence spectra of individual gamma rays. In total these data suggest that the experimental beta … more
Date: June 1, 1981
Creator: Henry, E. A.; Lien, O. G., III & Meyer, R. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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