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Some Experiments Relating Ion Diffusion in a Plasma to the Neutral Gas Density in the Presence of a Magnetic Field

Description: In some recent experiments the ion density in a plasma was measured as a function of radial distance from a d-c arc source of ions for the magnetic field intensities from 2500 to 14000 oersted. The diffusion coefficient appeared to very inversely as the square of the magnetic field strength, D~1/H2. The absolute value of D was shown to be approximately that which would be predicted by the collision diffusion theory when account is taken of the shorting effect of the end walls. The purpose of this report is to continue the examination of ion diffusion in a plasma and field experimentally the relation between the diffusion coefficient and the neutral gas pressure for a constant magnetic field.
Date: June 15, 1956
Creator: Reidigh, Rodger V.
Partner: UNT Libraries Government Documents Department
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Disassembly and Postoperative Examination of the Aircraft Reactor Experiment

Description: The Aircraft Reactor Experiment (ARE)was successfully concluded in November of 1954, and a detailed report of the operation was published the following year. At that time it was thought that an extensive examination of the reactor and system components after disassembly was warranted. It was realized, of course, that the level of radioactivity of the components would necessitate extensive delays in the examinations. Since examination of a few critical ARE samples showed nothing unexpected, much of the planned hot-cell inspection was postponed and complete examination of all but a few specimens was indefinitely suspended. The few examinations that were completed are described in this report, along with a description of the disassembly of the ARE system. Diagrams of the fuel system, sodium system, and off-gas system are presented in Figs. 1, 2, and 3 for reference use in visualizing the disassembly process.
Date: April 15, 1958
Creator: Cottrell, W. B.; Crabtree, T. E.; Davis, A. L. & Piper, W. G.
Partner: UNT Libraries Government Documents Department
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The Effect of Acidity and Reducing Agents on Ruthenium Solvent Extraction by Tributyl Phosphate in the 25 Process

Description: Results of tracer studies suggest that, in tributyl phosphate extraction processes designed to recover and purify fissionable material, minimum ruthenium extraction should be obtained from feeds at least 2 M in nitric acid or at least 1 M acid-deficient. Ruthenium decontamination was decreased by preheating the feed and increased by pretreatment with reducing agents. A pretreatment using 0.06 M ferrous ion and 0.5 M urea with 1 hr simmering at 85°C should increase ruthenium decontamination about 10-fold in the 25 process. If other process considerations dictate the use of a low-acid feed, decontamination from ruthenium may be improved by using 3 M nitric acid as the scrubbing solution. Apparently, the scrubbing process is quite time-dependent; a solvent holdup time of about 15 min may be needed in the scrub section for maximum decontamination.
Date: December 15, 1954
Creator: Flanary, J. R. & Frashier, L. D.
Partner: UNT Libraries Government Documents Department
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0-2 kv Flash Tube Supplies

Description: In order to perform the various experiments with a bubble chamber, a high intensity flash tube is used. This report briefly describes the power supplies designed and constructed to power these lamps.
Date: March 15, 1962
Creator: Miller, D. M.
Partner: UNT Libraries Government Documents Department
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6 kv Capacitor Charging Supply

Description: The power supplies designed and constructed to power high intensity flash tubes used in bubble chamber experiments are briefly described and are accompanied by a schematic diagram of the layout. (D.C.W.)
Date: March 15, 1962
Creator: Miller, D. M.
Partner: UNT Libraries Government Documents Department
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Servo Stabilized RF Vernier Time-of-Flight Analyzer

Description: The analyzer can be operated either internally or externally. The 10 ma germanium discriminator is quiescently biased to 8.5 ma in its low-voltage state. An input signal current of 3.5 ma or more triggers it to its high voltage state. This triggers the oscillator. The oscillator signal is buffered and mixed in the bridge modulator with the reference radiofrequency signal from the cyclotron. The low-frequency beat note from the bridge modulator is squared up and passed to the beat zero univibrator which generates 0.7 mu sec signals each time the beat note passes through zero from positive to negative. The trailing edge of the beat zero univibrator is employed to terminate the time-of-flight measurement and to control the servo measurement. Drawings are included. (M.C.G.)
Date: January 15, 1962
Creator: Chase, Robert L.
Partner: UNT Libraries Government Documents Department
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Computations for AGS Experimental Beams: Description of Computer Program

Description: Description of a computer program which optimizes the locations and strengths of magnets for experimental beams at the Brookhaven AGS written for the IBM 7090 computer. Layout, method, and routines are given particular attention, and representative data cards are shown.
Date: December 15, 1961
Creator: Baker, Winslow F.
Partner: UNT Libraries Government Documents Department
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Test and Evaluation of Large Magnetic Tape-Wound Cores Used in the Astron Accelerator

Description: Project Sherwood is a nation-wide attempt to produce a controlled thermo-nuclear fusion reaction. The Astron experiment, conceived by Nicholas Christofilos, will utilize the effects of a cylindrical layer of relativistic electrons to contain and heat the plasma. A high quality, 200-ampere, 5-Me V electron beam is required to form the electron layer. The electron beam is produced by a linear induction electron accelerator. Three hundred and thirty-three toroidal cores of magnetic material surround an evacuated ceramic accelerating column. The electrons are accelerated by the transverse electric field produced by the changing flux. The magnetic cores are tape-wound toroids of .001", 50% Ni - 50% Fe. Two hundred eighty-eight cores are 24" o.d. x 8-1/2" i. d. x 1/2" thick and the remaining forty-five are 33" o. d. x 18" i. d. x 1/2" thick. Each core is required to support 16 kG for 0.4 psec. The choice of magnetic material was made by testing all available material for the required parameters. Results of these tests are presented.
Date: October 15, 1963
Creator: Sewell, Roger L.
Partner: UNT Libraries Government Documents Department
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Feasibility Report 100-DR WAPD Test Loop

Description: The purpose of this report is to present a HAPO proposal for the design and construction of a high-temperature, high-pressure light water recirculation test facility for the Westinghouse Electric Corporation, Atomic Power Division This report does not attempt to justify the feasibility of site location nor does it attempt to elaborate on such technical considerations as permissible test specimen heat generation and enrichment requirements which have been covered in an earlier document. Instead, detail information is developed on the proposed design with major emphasis on detail descriptions of the proposed loop and auxiliaries, design and construction scheduling and costs, and operating costs.
Date: March 15, 1955
Creator: Engineering Department, Hanford Atomic Products Operation, General Electric Company
Partner: UNT Libraries Government Documents Department
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The Alpha Half-Life of the Isotope Pu-241

Description: A plutonium solution of known Pu-241 content was purified by solvent extraction techniques to remove uranium and americium impurities. Portions of this purified solution were then analyzed for U-237 as a function of time. Since the growth of U-237 occurs directly by the alpha decay of Pu-241, these measurements provided sufficient data for calculation of the Pu-241 alpha half-life, which was found to be 2.91 ± 0.50 x 10⁵ years.
Date: February 15, 1955
Creator: Gift, M. W.
Partner: UNT Libraries Government Documents Department
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Criminology Collection Evaluation Report

Description: This report summarizes an evaluation of the UNT Libraries' Criminology collection to determine if the collection is adequately serving patron needs. It was determined that the collection was currently meeting patrons' needs, and some recommendations for future collection maintenance were included.
Date: November 15, 2021
Creator: Harker, Karen
Partner: UNT Libraries
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Studio Arts Collection Evaluation Report

Description: This report summarizes an evaluation of the UNT Libraries' Studio Arts collection to determine if the collection is adequately serving patron needs. It was determined that the collection was currently meeting patrons' needs, and some recommendations for future collection maintenance were included.
Date: November 15, 2021
Creator: Harker, Karen
Partner: UNT Libraries
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Philosophy and Religious Studies Collection Evaluation Report

Description: This report summarizes an evaluation of the UNT Libraries' Philosophy and Religious Studies collection to determine if the collection is adequately serving patron needs. It was determined that the collection was currently meeting patrons' needs, and some recommendations for future collection maintenance were included.
Date: October 15, 2021
Creator: Harker, Karen
Partner: UNT Libraries
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Speech & Hearing Sciences Collection Evaluation

Description: This report summarizes an evaluation of the UNT Libraries' Speech and Hearing Sciences collection to determine if the collection is adequately serving patron needs. It was determined that the collection was currently meeting patrons' needs, and some recommendations for future collection maintenance were included.
Date: October 15, 2021
Creator: Harker, Karen
Partner: UNT Libraries
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Africana Studies Collection Evaluation Report

Description: This report summarizes an evaluation of the UNT Libraries' Africana Studies collection to determine if the collection is adequately serving patron needs. It was determined that the collection was currently meeting patrons' needs, and some recommendations for future collection maintenance were included.
Date: October 15, 2021
Creator: Harker, Karen
Partner: UNT Libraries
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Unaudited Budget Report for Planning Grant

Description: A document containing an unaudited budget report for a planning grant, including expenses associated with conferences, committee meetings, research assistance, operations, Getty Institute attendance, and consultants. Handwritten changes have been made to the document.
Date: June 15, 1988
Partner: UNT Libraries Special Collections
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Fission Product Poisoning in a Pile

Description: Abstract. The effect of the neutron flux on the relative importance of different fission product poisons is discussed. The general expression for the poising of a fission product is given with the various equations for special cases of interest. The formulae are applied to the problem of finding the poisoning due to fission products at the end of one day in a pile operating with a flux of 4 x 10(14) neutrons/cm(2)/soc. These results are summarized in the table on page 12. Appendix I contains a revised list of cross sections x yields for all stable isotopes. Such a list was first given by Wheeler in CP-889. Appendix II contains a list of radioactive fission products with half lives greater than one day with data about yields, parents, gaseous ancestors, and numbers of neutrons.
Date: December 15, 1944
Creator: Way, Katharine, 1903-
Partner: UNT Libraries Government Documents Department
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Sealing of Holes in Aluminum Sheet by Oxidation

Description: Aluminum oxide occupies a larger volume than the aluminum it contains would fill as metal, consequently, the assumption has been made that holes in metallic aluminum would close by a sufficient amount of oxidation. Therefore, we were asked to investigate the rate of plug formation under conditions to be expected in the pile. For the latter we were requested to approach the pile conditions as nearly as we could by employing the Chicago cyclotron. It seems to us that the problem divides itself into two separate questions: (1) under what conditions may holes be expected to close? (2) if holes do close how much corrosion of uranium may be expected before the closure becomes impervious to water vapor? In this report only the first question is considered. The experiments and theory coupled with the data collected by other workers on the project definitely define the limits within which pores in the aluminum cans may be expected to close by an oxidation process. Under the most favorable conditions only small holes may be sealed in this manner. In the large majority of the cases the holes not only fail to close but become larger.
Date: July 15, 1944
Creator: Anderson, S. & Goldowski, N.
Partner: UNT Libraries Government Documents Department
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Poisoning and Production in a Power Plant

Description: The yield of 49, the efficiency of production of 49, and poisoning in a power plant are discussed. Only the crudest of estimates of the poisoning are possible: these indicated that production will probably not be hampered by poisoning. In this case the yield of 49 could be as high as 3 kg/ton but only about 2 kg/ton is compatible with a fairly high efficiency. In the case that production is stopped by poisoning, smaller yields, proportional to the tolerable loss in k, are obtained. In this case the yield will be improved by a factor of 2 or 3 if only the most poisoned parts are extracted and replaced by new uranium.
Date: December 15, 1942
Creator: Ashkin, J.; Christy, Robert F., 1916-2012 & Feld, Bernard T. (Bernard Taub), 1919-1993
Partner: UNT Libraries Government Documents Department
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Alkali Metal Physical Properties Program at Pratt & Whitney Aircraft-CANEL

Description: The favorable combination of physical properties such as heat capacity, viscosity, electrical resistivity, thermal conductivity and high temperature liquid range make alkali metals, in principle, among the best heat transfer fluids available for use in nuclear reactor and other esoteric powerplant systems. Unfortunately, many of these properties are not known with sufficient certainty in the high temperature region to permit optimization of design criteria for developing maximum efficiency coolant systems. For this reason, Pratt & Whitney Aircraft-CANEL, have been concerned for some time in extending the physical properties data of alkali liquid metals in the high temperature region. A supplemental program is being initiated to study some of the properties of alkali metals in the gas phase. This information is required for designing systems where the alkali vapor is the working fluid. In addition, programs are under way to study the solubility of noble gases in alkali liquid metals and wetting characteristics of these liquid metals with structural materials.
Date: June 15, 1962
Creator: Kapelner, S. M. & Cleary, Robert E., 1920-
Partner: UNT Libraries Government Documents Department
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Refractory Metals as Alkali Liquid Metal Containment Materials

Description: Abstract. Refractory metals and their alloys are good container materials for alkali metal coolants. Thermodynamics of interaction with contaminants have been correlated with experimental test and show the need for high purity materials. Structural metal solubility data to 1600F can be used to correlate and predict engineering systems.
Date: June 15, 1962
Creator: Cleary, Robert E., 1920-
Partner: UNT Libraries Government Documents Department
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The Charge on Uranium(VI) in Acid Solution

Description: Abstract. The distribution coefficient of U(VI) between perchloric acid solutions and benzene solutions of TTA has been measured as a function of the acidity. It was possible to interpret the data in terms of the charge on the U(VI) species present in the aqueous phase. The experiments indicate that U(VI) exists as an ion charge +2 at acidities from 0.1M to 2.5M. In the interpretations of the distribution data, it was necessary to know the acidity coefficient of the uranyl chelate in the benzene solution. This was determined by measurement of the solubility of the compound UO2K2 - xH2). The activity coefficient of UO2K2 was found to decrease rapidly as the concentration of TTA in the benzene phase increased above 0.1M. This is probably due to the formation of a species involving more than two TTA molecules per U(VI)
Date: August 15, 1946
Creator: King, Edward L.
Partner: UNT Libraries Government Documents Department
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