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Behavior of mercury and iodine during vitrification of simulated alkaline Purex waste

Description: Current plans indicate that the high-level wastes stored at the Savannah River Plant will be solidified by vitrification. The behavior of mercury and iodine during the vitrification process is of concern because: mercury is present in the waste in high concentrations (0.1 to 2.8 wt%); mercury will react with iodine and the other halogens present in the waste during vitrification and; the mercury compounds formed will be volatilized from the vitrification process placing a high particulate load … more
Date: September 1, 1981
Creator: Holton, L.K.
Partner: UNT Libraries Government Documents Department
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Uranium hydrogeochemical and stream sediment reconnaissance data release for the Lewistown NTMS Quadrangle, Montana, including concentrations of forty-two additional elements

Description: Totals of 758 water and 1170 sediment samples were collected from 1649 locations in the Levistown quadrangle. Water samples were collected at streams, springs, wells, ponds, and marshes; sediment samples were obtained from streams, springs, and ponds. Histograms and statistical data for uranium concentrations in water and sediment samples and thorium concentrations in sediment samples are given. All samples were collected at the nominal reconnaissance density of one sample location per 10 km/su… more
Date: August 1, 1980
Creator: Shannon, S.S. Jr.
Partner: UNT Libraries Government Documents Department
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Tabulation of thermodynamic data for chemical reactions involving 58 elements common to radioactive waste package systems

Description: The rate of release and migration of radionuclides from a nuclear waste repository to the biosphere is dependent on chemical interactions between groundwater, the geologic host rock, and the radioactive waste package. For the purpose of this report, the waste package includes the wasteform, canister, overpack, and repository backfill. Chemical processes of interest include sorption (ion exchange), dissolution, complexation, and precipitation. Thermochemical data for complexation and precipitati… more
Date: August 1, 1980
Creator: Benson, L. V. & Teague, L. S.
Partner: UNT Libraries Government Documents Department
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Bimolecular reaction dynamics from photoelectron spectroscopy of negative ions

Description: The transition state region of a neutral bimolecular reaction may be experimentally investigated by photoelectron spectroscopy of an appropriate negative ion. The photoelectron spectrum provides information on the spectroscopy and dynamics of the short lived transition state and may be used to develop model potential energy surfaces that are semi-quantitative in this important region. The principles of bound [yields] bound negative ion photoelectron spectroscopy are illustrated by way of an exa… more
Date: November 1, 1992
Creator: Bradforth, S.E.
Partner: UNT Libraries Government Documents Department
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Two-pion correlations in heavy ion collisions

Description: An application of intensity interferometry to relativistic heavy ion collisions is reported. Specifically, the correlation between two like-charged pions is used to study the reactions Ar+KCl..-->..2..pi../sup +-/+X and Ne+NaF..-->..2..pi../sup -/+X. Source sizes are obtained that are consistent with a simple geometric interpretation. Lifetimes are less well determined but are indicative of a faster pion production process than predicted by Monte Carlo cascade calculations. There appears to be … more
Date: August 1, 1982
Creator: Zajc, W. A.
Partner: UNT Libraries Government Documents Department
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Savannah River Laboratory hydrogeochemical and stream sediment reconnaissance. Preliminary basic data release, ground water in Winston-Salem 1/sup 0/ x 2/sup 0/ NTMS area, North Carolina, Virginia, and Tennessee. National Uranium Resource Evaluation Program

Description: This report presents preliminary results of ground water reconnaissance in the Winston-Salem National Topographic Map Series (NTMS) 1/sup 0/ x 2/sup 0/ quadrangle. This report is issued as a supplement to SRL Document DPST-77-146-1, GJBX-66(77), which contained a geologic description of the area and analytical results for stream sediment samples. Ground water samples were collected at 784 sites for a nominal density of one site per 25 square kilometers (ten square miles). Neutron activation ana… more
Date: March 1, 1978
Creator: Price, V & Ferguson, R B
Partner: UNT Libraries Government Documents Department
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Wilsonville SRC-I pilot plant: I. Fractionation area corrosion studies; II. Hot vs. normal separation mode of operation

Description: Extensive corrosion studies in solvent recovery columns have been done with different coals (mainly Kentucky number 9 Lafayette, Dotiki and Fies). Sodium carbonate (0.1 to 1.1% of coal) was added as neutralizer to control corrosion rate. Chloride balance runs were made for isolation of corrosive streams with high chlorine content. A caustic wash program of inlet streams has been developed for selective treatment of corrosive streams as an alternative means for possible replacement of sodium car… more
Date: April 1, 1981
Creator: Lee, J.M.
Partner: UNT Libraries Government Documents Department
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Electrocatalysis of anodic oxygen-transfer reactions at modified lead dioxide electrodes

Description: The electrocatalytic activities were compared for pure and chloride-doped beta-PbO{sub 2} (Cl-PbO{sub 2}) films on gold and platinum substrates. Rate constants were increased significantly for oxidations of Mn{sup 2+}, toluene, benzyl alcohol, dimethylsulphoxide (DMSO) and benzaldehyde in acidic media by the incorporation of Cl{sup {minus}} into the oxide films. These reactions are concluded to occur by the electrocatalytic transfer of oxygen from H{sub 2}O to the reaction products. Results of … more
Date: September 21, 1990
Creator: Hsiao, Yun-Lin.
Partner: UNT Libraries Government Documents Department
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Uranium hydrogeochemical and stream sediment reconnaissance data release for the Dubois NTMS Quadrangle, Idaho/Montana, including concentrations of forty-five additional elements

Description: Totals of 1024 water samples and 1600 sediment samples were collected from 1669 locations in the Dubois quadrangle. Water samples were taken at streams, springs, and wells; sediment samples were collected from streams and springs. All field and analytical data are presented for waters in Appendix I-A and for sediments in I-B. All elemental analyses were performed at the LASL. Water samples were initially analyzed for uranium by fluorometry. All water samples containing more than the upper detec… more
Date: August 1, 1980
Creator: LaDelfe, C. M.
Partner: UNT Libraries Government Documents Department
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Studies of free radicals by ultraviolet excimer laser photolysis. Progress report, 1 April 1980-1 November 1980

Description: An experimental technique has been developed to produce and directly study vibrationally excited free radicals. Pulses of light from an ultraviolet excimer laser are used to photodissociate small molecules to generate free radicals with high internal excitation. The radicals are detected directly by the technique of time and wavelength-resolved infrared emission spectroscopy using a background-limited copper-doped germanium infrared detector. New results have been obtained on the CH/sub 3/ radi… more
Date: January 1, 1980
Creator: Leone, S.R.
Partner: UNT Libraries Government Documents Department
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Orientation study: Jasper and Hampton Counties, South Carolina. National Uranium Resource Evaluation Program

Description: This abbreviated data report presents results of a ground water and stream sediment orientation study in Jasper and Hampton Counties in southeastern South Carolina. Stream sediment samples were taken at 92 sites and sieved into four fractions for subsequent analysis. Surface water samples were taken at 68 of these sites. Ground water samples were collected at 108 sites. Neutron activation analysis results are given for uranium and nine other elements in ground water samples. Mass spectrometry r… more
Date: August 1, 1982
Creator: Thayer, P. A. & Fay, W. M.
Partner: UNT Libraries Government Documents Department
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Corrosion and materials selection report update non-proprietary version. Final technical report

Description: The revised Baseline design (dated 22 October, 1982) used most of the available information with regard to the corrosion, erosion and materials of construction. This information was collected through various programs conducted at the major coal liquefaction pilot plants, e.g. SRC-1 and SRC-2, H-Coal and EDS, and at various research laboratories. The selection of materials of construction was also based on certain basic assumptions with regard to the plant life and life of each type of equipment… more
Date: June 1, 1984
Creator: Agrawal, P.D.
Partner: UNT Libraries Government Documents Department
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Mechanism and kinetics of mineral absorption by plants. Annual progress report, October 1, 1965-September 30, 1966

Description: Plant nutrition was studied as a relation between aerobic respiration and ion uptake in barley. Potassium, chlorine, lithium, sodium, calcium, sulfates, and bicarbonates were studied by root absorption in varying concentrations of carbon dioxide atmospheres. (PSB)
Date: January 1, 1966
Creator: Jacobson, L. & Overstreet, R.
Partner: UNT Libraries Government Documents Department
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Laser-induced chemical reactions. [H + H/sub 2/; F + H/sub 2/; H + HF; Cl + H/sub 2/; H + HCl; H + LiF]

Description: A classical model for the interaction of laser radiation with a molecular system is derived. This model is used to study the enhancement of a chemical reaction via a collision induced absorption. It was found that an infrared laser will in general enhance the rate of a chemical reaction, even if the reactants are infrared inactive. Results for an illustrative analytically solvable model are presented, as well as results from classical trajectory studies on a number of systems. The collision ind… more
Date: December 1, 1980
Creator: Orel, A.E.
Partner: UNT Libraries Government Documents Department
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Aquifer Characteristics Data Report for the Weldon Spring Site chemical plant/raffinate pits and vicinity properties for the Weldon Spring Site Remedial Action Project, Weldon Spring, Missouri

Description: This report describes the procedures and methods used, and presents the results of physical testing performed, to characterize the hydraulic properties of the shallow Mississippian-Devonian aquifer beneath the Weldon Spring chemical plant, raffinate pits, and vicinity properties. The aquifer of concern is composed of saturated rocks of the Burlington-Keokuk Limestone which constitutes the upper portion of the Mississippian-Devonian aquifer. This aquifer is a heterogeneous anisotropic medium whi… more
Date: November 1, 1990
Partner: UNT Libraries Government Documents Department
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Measurements of gas-phase reaction rates: D + HX and NO + O/sub 3/. Progress report, September 1, 1980-November 31, 1981

Description: The flash photolysis resonance (FP-RF) technique was used to reexamine the Cl-H/sub 2/ system, (Cl + H/sub 2/ ..-->.. H + HCl), to eliminate wall effects encountered in the flow reactor. With the FP-RF technique, the reactions takes place in the center of the cell at a rate which is typically two orders of magnitude faster than the rate of diffusion to the walls. Fromthis study, it was concluded that the ratio of the forward to the reverse rate constant is equal to the equilibrium constant. The… more
Date: May 1, 1981
Creator: Gordon, R. J.
Partner: UNT Libraries Government Documents Department
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Crossed molecular beam studies of unimolecular reaction dynamics. [Angular and velocity distributions]

Description: The study of seven radical-molecule reactions using the crossed molecular beam technique with supersonic nozzle beams is reported. Product angular and velocity distributions were obtained and compared with statistical calculations in order to identify dynamical features of the reactions. In the reaction of chlorine and fluorine atoms with vinyl bromide, the product energy distributions are found to deviate from predictions of the statistical model. A similar effect is observed in the reaction o… more
Date: April 1, 1979
Creator: Buss, R.J.
Partner: UNT Libraries Government Documents Department
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Advanced LMFBR fuel cladding susceptability to stress corrosion due to reprocessing impurities

Description: The potential degradation of LMFBR fuel cladding alloys by chlorides, when used in metallic fuel systems, was evaluated. The alloys tested were D-9 and HT-9 stainless steels, austenitic and ferritic alloys respectively. These two alloys were tested in parallel with and their performance compared to the austenitic stainless steel Type 316. All alloys were tested for 7400 hours in a stress rupture environment with chloride exposure at either 550/degree/C 650/degree/C. None of the alloys tested we… more
Date: March 1, 1987
Creator: Henslee, S. P.
Partner: UNT Libraries Government Documents Department
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Oxidizing behavior of some platinum metal fluorides. [Xe complexes with Pt, Pd fluorides; Chlorine-2 oxidation by transition metal hexafluorides]

Description: The previously known compounds Xe/sub 2/F/sub 3//sup +/PtF/sub 6//sup -/, XeF/sup +/PtF/sub 6//sup -/ and XeF/sub 2/.2PtF/sub 4/(XePt/sub 2/F/sub 10/) were prepared by the interaction of XeF/sub 2/ with PtF/sub 4/. The new compounds XeF/sub 2/.PdF/sub 4/ and XeF/sub 2/.2PdF/sub 4/(XePd/sub 2/F/sub 10/) were produced by interaction of XeF/sub 2/ with either PdF/sub 4/ or Pd/sub 2/F/sub 6/. A weight loss-versus-time curve indicated the presence of 4:1, 3:1 and 2:1 XeF/sub 2//PdF/sub 4/ complexes.… more
Date: October 1, 1978
Creator: Graham, L.
Partner: UNT Libraries Government Documents Department
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The effect of additives on the reactivity of palladium surfaces for the chemisorption and hydrogenation of carbon monoxide: A surface science and catalytic study. [LaMO/sub 3/(M = Cr, Mn, Fe, Co, Rh)]

Description: This research studied the role of surface additives on the catalytic activity and chemisorptive properties of Pd single crystals and foils. Effects of Na, K, Si, P, S, and Cl on the bonding of CO and H and on the cyclotrimerization of acetylene on the (111), (100) and (110) faces of Pd were investigated in addition to role of TiO/sub 2/ and SiO/sub 2/ overlayers deposited on Pd foils in the CO hydrogenation reaction. On Pd, only in the presence of oxide overlayers, are methane or methanol forme… more
Date: June 1, 1987
Creator: Rucker, T.G.
Partner: UNT Libraries Government Documents Department
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TATB: water amination process

Description: A pilot-plant scale process for animation of sym-trichlorotrinitrobenzene (TCTNB) in the presence of water to produce sym-triaminotrinitrobenzene (TATB) has been developed. With this process the chlorine content from trapped impurities is reduced from the typical 0.5 to 1.0 percent range fown to about 0.1 percent. This reduction in chlorine is accompanied by a decrease in size of the median particle by 5 to 10 ..mu..m.
Date: December 1, 1977
Creator: Quinlin, W.T.
Partner: UNT Libraries Government Documents Department
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Modeling study of vibrational photochemical isotope enrichment. [HBr + Cl/sub 2/; HCl + Br/sub 2/]

Description: Chemical kinetic modeling studies of vibrational-photochemical isotope enrichment have been performed on two systems: Model (I), H/sup 79/Br(H/sup 81/Br) + Cl/sub 2/ and, Model (II), H/sup 37/Cl(H/sup 35/Cl) + Br. Pulsed laser excitation was modeled to the first excited vibrational level of H/sup 79/Br in Model I and the first and second excited vibrational levels of both HCl isotopes in Model II. These are prototype systems of exoergic (Model I) and endoergic (Model II) reactions. The effects … more
Date: September 29, 1978
Creator: Badcock, C.C.; Hwang, W.C. & Kalsch, J.F.
Partner: UNT Libraries Government Documents Department
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Flagstaff 1/sup 0/ x 2/sup 0/ NTMS area Arizona: data report (abbreviated)

Description: Sampling in the northern half of the quadrangle was restricted to areas outside the Hopi Indian Reservation. Surface sediment samples were collected at 977 sites, at a target sampling density of one site per 13 square kilometers. Ground water samples were collected at 45 sites in the southwestern part of the quadrangle. Neutron activation analysis results are given for uranium and 16 other elements in sediments, and for uranium and 9 other elements in ground water. Mass spectrometry results are… more
Date: July 1, 1980
Creator: Thayer, P. A. & Cook, J. R.
Partner: UNT Libraries Government Documents Department
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Simultaneous determination of minor and trace elements in coal using instrumental neutron activation analysis

Description: The INAA procedure developed in this work is a rapid, accurate, and precise method for determining minor and trace elements (Al, Br, Ca, Cl, Mg, Mn, Ti, V) in coal. This procedure allows the determination of elements with half-lives <10 min which is not usually accomplished by other INAA techniques. The results obtained for the NBS coal are in good agreement with the literature values. The accuracy and the precision is very good. However, the precision of the determinations of the iowa coals wa… more
Date: August 1978
Creator: Clark, L., Jr.
Partner: UNT Libraries Government Documents Department
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