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On Neutron Evaporation From Excited Nuclei
At high excitation energies, competition of proton and c-particle emission with neutron emission becomes important. For low excitation, the competition between Y-emission, neutron emission, and fission should be taken into account. To aid in the evaluation of this competition an experiment has been performed to measure the number and energy spectrum of the protons and c-particles emitted in the high energy bombardment of uranium with protons, deuterons, and c-particles.
Date:
June 18, 1953
Creator:
Adelman, Frank L.
System:
The UNT Digital Library
Molecular Geometry and the Vapor Pressure of the Isotopic Ethylenes; Chemical and Structural Isomers
This report details a study of the vapor pressures of deuteroethylenes and C13 ethylene.
Date:
June 18, 1962
Creator:
Bigeleisen, J., (Jacob), 1919-2010; Ribnikar, Slobodan V.; Stern, Marvin J. & VanHook, W. A., (William Alexander), 1936-
System:
The UNT Digital Library
Optimum Water Velocity for the Converter Reactor
Abstract: "Two cases are considered. In Case I, the reactor water velocity is optimized to obtain a minimum annual cost (including amortization and operating costs) for the cooling system along. The optimum velocity for a 310 megawatt reactor is calculated to be ~25 feet per second, compared to the present design value of 30 feet per second. In Case II, the velocity which will give the minimum cost of product under the assumptions of varying power and production rate is found to be in the range from ~25 to ~40 feet per second, depending on the assumptions with respect to the variation of total investment in the reactor complex with design production capacity."
Date:
June 18, 1952
Creator:
Cooley, William C.
System:
The UNT Digital Library
Examples for Pressure Drop Calculations in Parallel Flow Helium Cooling
Pressure drop calculations are shown for He cooled power plants ranging from 400,000 kw to 30,000 kw.
Date:
June 18, 1942
Creator:
Feld, Bernard T. (Bernard Taub), 1919-1993 & Szilard, Leo
System:
The UNT Digital Library
Trip to Selas Corporation of America
On May 23, 1957, a visit was made by the writer to the Selas Corporation of American in Dresher, Pennsylvania. The purpose of the visit was to discuss further investigations into methods of tubesheet brazing by direct heating. Original work along these lines has been carried out at ORNL and is covered by a memo (CF-57-4-57) to W.D. Manly, dated April 16, 1957, and entitled : Investigation of Tubesheet Brazing by a Method of Direct Heating.
Date:
June 18, 1957
Creator:
Franco-Ferreira, E. A.
System:
The UNT Digital Library
Cross Sections of 14.5 Mev Neutron Reactions With Special Interest in Ca47 Formation
This report measures the cross sections of isotopes for 14.5 MeV neutrons and compares the author's results with calculated and existing literature values.
Date:
June 18, 1962
Creator:
Hillman, Manny
System:
The UNT Digital Library
The Thermal Decomposition of Irradiated [alpha] Lead Aside
This report studies the thermal decomposition of unirradiated and heavily reactor irradiated colloidal [alpha] - PbH6.
Date:
June 18, 1962
Creator:
Jach, Joseph
System:
The UNT Digital Library
New Beta Heat-Treating Salt Baths for Reducing Hydrogen Pickup by Uranium Rods
The following report summarizes the results of the laboratory-scale work and pilot-plant scale work of a salt-batch composition that reduces the hydrogen pickup by uranium rods during the beta heat treatment, and the study of the influence of humidity over the salt bath on hydrogen pickup.
Date:
June 18, 1957
Creator:
Lortscher, Lawrence L.; Sense, Karl A. & Filbert, Robert B., Jr.
System:
The UNT Digital Library
Liquid-Liquid Extraction of Uranium and Plutonium from Hydrochloric Acid Solution with TRI (Iso-Octyl) Amine. Separation of Uranium and Plutonium from Thorium and Fission Products
A new and rapid method for the liquid-liquid extraction of uranium and plutonium from hydrochloric acid solution is based on the use of tri(iso-octyl)amine dissolved in xylene or methylisobutylketone. Uranium and/or plutonium are separated from thorium, alkalis, alkaline earths, rare earths, zirconium, niobium, ruthenium and other elements which do not form anionic species under the conditions described. The technique may be used for either tracer or macro quantities of uranium. Several practical applications of the method for the separations chemist are proposed.
Date:
June 18, 1957
Creator:
Moore, Fletcher L.
System:
The UNT Digital Library
Procedures for the Study of Bile Physiology in the Rat
This report describes procedures to "secure acceptable samples of bile from unanesthetized, nondepleted rats and sequential quantitative analysis with negligible experimental failure"--from abstract.
Date:
June 18, 1962
Creator:
Papavasiliou, P. S.; Bertinchamps, A. J.; Miller, S. T.; Gulibon, J. & Cotzias, G. C.
System:
The UNT Digital Library
The Influence of Lubrication on the Compactability of Magnesium-Green Salt Blends for Bomb Reduction
The following report follows the procedures to compact blends of uranium tetrafluoride and magnesium, describing how lubrication of the compact effects the outcome of the blends.
Date:
June 18, 1957
Creator:
Paprocki, Stan J.; Carlson, Ronald J. & Smith, Edward G., Jr.
System:
The UNT Digital Library
A Tracer Study of the Transport of Chromium in Fluoride Fuel Systems
The following report follows an experimental study that was made on the mass transport of chromium in polythermal inconel-fluoride fuel systems, followed by the technique of adding radioactive chromium-51 to the system as either CrF3 in the salt or as elemental chromium in the solid phase.
Date:
June 18, 1957
Creator:
Price, Robert B.; Sunderman, Duane Neuman; Pobereskin, Meyer & Calkins, George D.
System:
The UNT Digital Library
Positron Scanner for Locating Brain Tumors
This report describes a system that uses positron emitting isotopes for locating brain tumors.
Date:
June 18, 1962
Creator:
Rankowitz, S.; Robertson, J. S.; Higinbotham, William A. & Rosenblum, R. J.
System:
The UNT Digital Library
Proembryo Irradiation to Produce Blue-Fluorescent and Albino Seedlings
Technical report outlining an experiment to introduce radiation to maize plants after pollination to produce blue-florescent and albino seedlings.
Date:
June 18, 1962
Creator:
Steffensen, Dale M.
System:
The UNT Digital Library
Thermodynamics of Solutions of Actinides and Fission Products in Bismuth
This report reviews the published work on the thermochemistry of the liquid alloys of bismuth with Th, Pa, U, and Pu and the high-yield fission products, and presents in a unified form the authors' own results in this field.
Date:
June 18, 1962
Creator:
Wiswall, Richard H., Jr. & Egan, James J.
System:
The UNT Digital Library
Isotope Effects on Intermolecular Interactions and Isotopic Vapor Pressure Differences
This report discusses some of the problems in the calculation of isotope effects on the vibrational frequencies of the condensed phase.
Date:
June 18, 1962
Creator:
Wolfsberg, Max
System:
The UNT Digital Library