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Nuclear Decay Schemes in the Actinium Family

Description: Abstract: "With magnetic alpha-particle and electron high-resolution spectrographs and scintillation gamma-ray spectrometers, a study was made of the nuclear decay of a number of members of the actinium family - U-235, Th-227, Ra-223, Em-219, Po-215, and Bi-211. Decay schemes are presented for each of these nuclides, together with such correlations as are possible with present theoretical nuclear models. The decay scheme of U-235 and a portion of that of Th-227 are interpretable in terms of the… more
Date: July 1957
Creator: Pilger, Richard Christian, Jr.
Partner: UNT Libraries Government Documents Department
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Elastic Scattering of 14 Mev Neutrons (Theoretical Curves)

Description: Abstract: "Theoretical differential cross-sections computed from the optical model for 14 Mev neutrons are presented for a large number of nuclei. The parameters used for the calculations were selected on the basis of best fit to existing experimental data."
Date: July 1957
Creator: Bjorklund, F. & Fernbach, Sidney, 1917-1991
Partner: UNT Libraries Government Documents Department
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Elastic Scattering of 7 Mev Neutrons (Theoretical Curves)

Description: Abstract: "Theoretical differential cross-sections computed from the optical model for 7 Mev neutrons are presented for a large number of nuclei. The parameters used for the calculations were selected on the basis of best fit to existing experimental data."
Date: July 1957
Creator: Bjorklund, F. & Fernbach, Sidney, 1917-1991
Partner: UNT Libraries Government Documents Department
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Ion Oscillations in a Magnetic Field

Description: The following report is based off of one of the author's lectures on the physics of plasma, or ionized gases, which was given on July 16, 1954.
Date: July 30, 1957
Creator: Newcomb, William A.
Partner: UNT Libraries Government Documents Department
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Manual of Radiation Protection Standards

Description: "The following is an alphabetical listing of terms and units in common usage at HAPO. Other terms and definitions may be added as the need becomes apparent or as revisions or additional terms are issued by the NCRP and ICRP."
Date: July 1957
Creator: General Electric Company
Partner: UNT Libraries Government Documents Department
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Determination of Thorium in the Parts Per Million Range in Rocks

Description: Abstract: "A procedure for the determination of thorium in the concentration range of 0.2 to 10 parts per million ThO2 in felsic or mafic rocks. Thorium is extracted by mesityl oxide and purified by iodate precipitation from nitric acid medium containing tartaric acid and hydrogen peroxide. The thorium is determined spectrophotometrically with thoron from meso-tartaric acid medium."
Date: July 1957
Creator: Levine, Harry & Grimaldi, Frank S.
Partner: UNT Libraries Government Documents Department
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Petrographic Study of Sandstone of the Inyan Kara Group (Cretaceous) and Associated Rocks in the Black Hills, Wyoming and South Dakota

Description: The following report covers the Petrographic study of Early Cretaceous age sandstone beds in the Fall River formation and the Fuson-Lakota formations, as well as Late Jurassic age beds in the underlying Unkpapa and Morrison formations along the western side of the Black Hills.
Date: July 1957
Creator: Bergenback, R. E.; Chisholm, W. A. & Mapel, W. J.
Partner: UNT Libraries Government Documents Department
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Geologic Investigations of Radioactive Deposits

Description: The following report is a statement of the Geological Survey's progress on the investigation of the fundamental geology, mineralogy, and geochemistry of uranium and other radioactive materials with the intention of discovering and delimiting areas favorable for the future production of uranium and other radioactive ores. This report covers the period from December 1, 1956 to May 31, 1957.
Date: July 1957
Creator: Geological Survey (U.S.)
Partner: UNT Libraries Government Documents Department
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An Apparatus for the Study of Thermoluminescence from Minerals

Description: This report discusses an apparatus that has been constructed to record the thermoluminescence of a mineral in the form of a powder or a single crystal at temperatures from -100 C to +400 C.
Date: July 1957
Creator: Ashby, G. E. & Kellagher, R. C.
Partner: UNT Libraries Government Documents Department
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Mineralogy, Internal Structural and Textural Characteristics, and Paragenesis of Uranium-Bearing Veins in the United States

Description: The following report summarizes and reviews some of the recent [1957] mineralogic information relevant to uranium-bearing veins in the United States, as well as describing some of the reported mineralogic associations and the modes of occurrence of the uranium minerals in vein deposits. This paper is a chapter of a larger and more comprehensive report entitled, "Geology of Uranium-Bearing Vein Deposits in the United States".
Date: July 1957
Creator: Walker, George W. & Adams, John W.
Partner: UNT Libraries Government Documents Department
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Evaluation of Reactor Core Materials for a Gas-Cooled Reactor Experiment

Description: From introduction: "On February 1, 1956, Batelle was awarded a contract by the Army Reactor Branch (ARB) to select, develop, and test core materials which could be used successfully in conducting a Gas Cooled Reactor Experiment (GCRE). The prime objective of the GCRE would be to evaluate small portable reactor systems for military application...The present report is concerned with the GCRE activities at Batelle during approximately the 7 months' period following the first report of this series,… more
Date: July 11, 1957
Creator: Keller, Donald L.
Partner: UNT Libraries Government Documents Department
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A Proposal For Reducing Impurities in a Stabilized Pinched Discharge

Description: It is proposed to reduce the initial wall hangup and consequent plasma contamination of a stabilized pinched discharge by reducing the Bz pressure difference across the current sheath to nearly zero at early times. Two methods for accomplishing this are proposed, both involving multistage programming of the Bz system.
Date: July 31, 1957
Creator: Lovberg, Ralph H. (Ralph Harvey)
Partner: UNT Libraries Government Documents Department
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Accident in Continuous-Dissolver Pilot Plant of Fluoride Volatility Project on May 15, 1957

Description: The so-called Fluoride Volatility Processes refer to several proposed non-aqueous methods of processing irradiated fuel elements. In each of these methods, the uranium is fluorinated to UF6 and then decontaminated by distillation. One of those methods, involving the direct fluorination of the uranium by bromine trifluoride (BTF), has been under investigation at BNL since 1950. In 1952, it was demonstrated at BNL that uranium, as UF6, could be satisfactorily decontaminated by distillation in sma… more
Date: July 10, 1957
Creator: Strickland, Gerald; Horn, F. L.; Johnson, Richard & Dwyer, O. E.
Partner: UNT Libraries Government Documents Department
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Preliminary Design Requirements Argonne Boiling Reactor (ARBOR) Facility

Description: From Introduction: "Descriptions of the functional requirements of the facility, together with preliminary concepts of methods for meeting them, are presented in this prospectus."
Date: July 15, 1957
Creator: Fromm, L. W.; Bernsen, S. A.; Bullinger, C. F. & Matousek, J. F.
Partner: UNT Libraries Government Documents Department
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National Motor-Gasoline Survey: Winter 1956-57

Description: Report issued by the U.S. Bureau of Mines discussing surveys conducted on the motor gasoline sold during the winter of 1956-1957. The amount, location, and price of gasoline sold during this time are presented. This report includes tables, illustrations, and a map.
Date: July 1957
Creator: Blade, O. C.
Partner: UNT Libraries Government Documents Department
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The Effect of Sodium Vapor Formation on the Operation of the Enrico Fermi Reactor : an Estimate

Description: This technical report presents the results of some simplified calculations concerning the two-phase flow of sodium in the Enrico Fermi reactor. The rather large value for the specific volume of sodium vapor coupled with the resistance of the top axial blanket sections resulted in large pressure drops for even small values (by weight) of net vapor. It is concluded that the formation of any sodium vapor in the Enrico Fermi reactor produces "boiling disease", i.e. triggers an unstable condition wh… more
Date: July 1957
Creator: Kroeger, H. R. & Stephenson, J. W.
Partner: UNT Libraries Government Documents Department
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Sodium Boiling Calculations

Description: The equations are derived for making rough calculations of the pressure drop required to produce a given mass flow through a subassembly for a given heat generation for cases where the vapor volume fraction is 0.9 or less. The ratio of vapor velocity to liquid velocity is left as a parameter that is varied form unreasonably low to unreasonably high values.
Date: July 2, 1957
Creator: Nicholson, R. B.
Partner: UNT Libraries Government Documents Department
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Power Distribution in Boiling Reactors : Paper Presented to the American Nuclear Society

Description: It is found that the presence of steam voids in the core of a large boiling reactor causes distortions of the power distribution which are of engineering significance. The calculations of these distortions and methods for their regulation are the chief subjects of this paper which was presented to the American Nuclear Society, Pittsburgh, Pennsylvania, June 12, 1957.
Date: July 25, 1957
Creator: Weil, John W.
Partner: UNT Libraries Government Documents Department
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A Study of Uranium Deposits in the Copper Mountain Area: Fremont and Hot Springs Counties, Wyoming

Description: Report documenting a study of the Copper Mountain area to "evaluate the potential uranium production to determine, if possible, the origin and conditions of deposition of the uranium; and suggest possible guides to prospecting in this and geologically similar areas. All known radioactive deposits were examined and samples were collected for special studies and for assay of uranium content" (p. 5).
Date: July 1957
Creator: Loomis, Tom H. W. & Marks, Lawrence Y.
Location: See Bounding Coordinates
Partner: UNT Libraries Government Documents Department
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