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Monthly Progress Report No. 61 for May, 1948

Description: This is the University of California, Radiation Laboratory monthly progress report for May 1948. It discusses the following: (1) 184-inch Cyclotron Program; (2) 60-inch Cyclotron Program; (3) Synchrotron Program; (4) Linear Accelerator Program; (5) Experimental Physics; (6) Theoretical Physics, (7) Isotope Separation Program; (8) Chemistry Departments; (9) Medical Physics; and (10) Health Physics and Chemistry.
Date: May 31, 1948
Creator: Authors, Various
Partner: UNT Libraries Government Documents Department
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Monsanto Chemical Company, Unit 3 progress report, January 16--31, 1948

Description: Solubilities -- Orban: The solubility of postum in various concentrations of nitric acid was determined at 25.4{degrees}C. Hydrofluoric and Trifluoroacetic Acids -- Abel and Raiff: Details of this work will be reported in the next Progress Report. Conversion of Nitric Acid Solutions to Hydrofluoric Acid Solutions -- Bell: Conversion of production solutions to hydrofluoric acid solutions was tried by precipitation with ammonium oxalate, aluminum hydroxide, ammonium hydroxide, and sodium carbonat… more
Date: December 31, 1948
Partner: UNT Libraries Government Documents Department
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Physics group process report, April 1--30, 1948

Description: The high rate neutron scaler has been removed from service for repair. Consequent study has led to the discovery of a double counting effect. The vacuum system of the vacuum balance is being redesigned and rebuilt so as to obtain a higher vacuum. The vapor pressure of postum was measured with a quartz sickle gauge between 0.3 and 90 mm. of mercury pressure at temperatures between 430{degrees} and 745{degrees}C. The least square representation of the data is the following: Log p = {sub T}{und 53… more
Date: December 31, 1948
Creator: Knauss, H.P.
Partner: UNT Libraries Government Documents Department
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Laboratory instrument design progress report, November 1--30, 1948

Description: Progress is reported on the following projects: Quartz-fiber microbalance research, quartz-fiber construction and maintenance, design of multiple stirrer plating unit, and design of rotating stage for foil photography.
Date: December 31, 1948
Creator: Olt, R.G.
Partner: UNT Libraries Government Documents Department
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Electrodeposition research progress report, May 1--31, 1948

Description: Studies on the conversion of production nitric acid solutions to bismuth free postum (Polonium 210) solutions and the plating of postum from the hydrofluoric acid solution.
Date: December 31, 1948
Creator: Orban, E.
Partner: UNT Libraries Government Documents Department
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Electronics progress report, December 1--31, 1948

Description: Equipment and supplies are being packed for moving to Mound Laboratory. Work was started on the development of a cathode-follower circuit to match a B-wall tube to its connecting cable. The final report and maintenance manual for the scaler-multiplier are almost finished. The 10 millivolt Speedomax recorder used by Group 3 in the study of electrodeposition potentials has been replaced with a 150 millivolt Speedomax, utilizing two recording points for simultaneous recording of radioactive deposi… more
Date: December 31, 1948
Creator: Heyd, J. W. & Ohmart, P. E.
Partner: UNT Libraries Government Documents Department
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Monsanto Chemical Company Unit 3 progress report, January 16--31, 1948

Description: This monthly report provides brief progress descriptions of a number of projects being conducted at Mound Laboratory. Projects include sensitivity of the scaler used for neutron counting, purity of postum (Polonium 210), vapor pressure of postum, resistivity of postum, vapor pressure of selenium,and x-ray diffraction studies to determine the coefficients of expansion for aluminum, copper, lead,and gold.
Date: December 31, 1948
Partner: UNT Libraries Government Documents Department
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Summary of Results of Tumbling Investigations Made in the Langley 20-Foot Free-Spinning Tunnel on 14 Dynamic Models

Description: Report presenting the tumbling characteristics of dynamic models of 14 airplane designs in the free-spinning tunnel for various loadings and configurations. Conventional airplanes were not found to tumble, but tailless and tail-first airplanes might depending on the amount of static longitudinal stability. Results regarding the effect of dimensional and mass characteristics, effect of controls, use of parachutes as a tumble-recovery device, accelerations, and possibility of pilot escape are pro… more
Date: December 31, 1948
Creator: Stone, Ralph W., Jr. & Bryant, Robert L.
Partner: UNT Libraries Government Documents Department
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Effect of wing sweep, taper, and thickness ratio on the transonic drag characteristics of wing-body combinations

Description: Report presenting the transonic drag characteristics of a series of wing-body combinations and their component parts using the free-fall method. The configurations examined had wings of various sweeps and thickness ratios mounted on identical bodies of fineness ratio 12.
Date: December 31, 1948
Creator: Thompson, Jim Rogers & Mathews, Charles W.
Partner: UNT Libraries Government Documents Department
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Correlation of cylinder-head temperatures and coolant heat rejections of a multicylinder, liquid-cooled engine of 1710-cubic-inch displacement

Description: "Data obtained from an extensive investigation of the cooling characteristics of four multicylinder, liquid-cooled engines have been analyzed and a correlation of both the cylinder-head temperatures and the coolant heat rejections with the primary engine and coolant variables was obtained. The method of correlation was previously developed by the NACA from an analysis of the cooling processes involved in a liquid-cooled-engine cylinder and is based on the theory of nonboiling, forced-convection… more
Date: August 31, 1948
Creator: Lundin, Bruce T.; Povolny, John H. & Chelko, Louis J.
Partner: UNT Libraries Government Documents Department
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Process Section progress report, April 1--30, 1948

Description: The Process group reports that material processing is on schedule and that process laboratories 2 and 3 are being overhauled. The Electrodeposition group reports that they are on schedule but that they are somewhat handicapped due to a lack of coveralls. Administration reports that Site W schedules have been prepared.
Date: December 31, 1948
Creator: Scott, David L.
Partner: UNT Libraries Government Documents Department
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Neutron source progress report, March 1--31, 1948

Description: This monthly progress report describes efforts to prepare neutron sources with postum (Polonium 210) and either beryllium, boron or lithium by volatilization and by electrochemical deposition.
Date: December 31, 1948
Creator: Richmond, J.
Partner: UNT Libraries Government Documents Department
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Monthly health information report, August 1--31, 1948

Description: This document presents details about health concerns resulting from the activities of the Mound Laboratory during the month of August 1948.
Date: December 31, 1948
Creator: Boozer, A. H.
Partner: UNT Libraries Government Documents Department
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Gamma scale chemistry progress report, July 1--31, 1948

Description: Preparation and analytical chemistry of postum (Polonium 210) dibromide and tetrabromide by bromination of metallic postum are described.
Date: December 31, 1948
Creator: Martin, A.W.
Partner: UNT Libraries Government Documents Department
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General chemistry progress report, May 1--31, 1948

Description: Three studies are described: diffusion of postum (Polonium 210), measurement of standard potential of postum, and polarography with the cathode controller.
Date: December 31, 1948
Creator: Power, W. H.
Partner: UNT Libraries Government Documents Department
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Electrodeposition progress report, September 1--30, 1948

Description: Two difficulties which have been encountered in the attempts to prepare hydrofluoric acid solutions by precipitation and resolution are (1) dissolution of postum out of the solid precipitate leaving behind a solid bismuth compound and (2) the plastics used for a reaction vessel. Plastics tried have not held up under the combined effects of hydrofluoric acid, moderate heat, and alpha bombardment and the overall yield of the method is rather low. The plastics problem may be solved by the use of `… more
Date: December 31, 1948
Creator: Orban, E.
Partner: UNT Libraries Government Documents Department
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Health Division research progress report, July 1--31, 1948

Description: This report presents the details of the activities of the Mound Laboratory health sciences group during the month of July 1948.
Date: December 31, 1948
Creator: Jolley, W. P.
Partner: UNT Libraries Government Documents Department
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Production electrolysis studies V

Description: This study seeks to determine the decomposition of bismuth trioxide by polarography. Results gained confirmed that at decomposition potentials observed that bismuth will not be reduced under normal plating conditions observed during production.
Date: December 31, 1948
Creator: Power, W. H. & Ford, M.
Partner: UNT Libraries Government Documents Department
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Process research progress report, April 1--30, 1948

Description: Word was received that the Eimco filter has been shipped from the Salt Lake City plant. It is expected within two weeks or about May 10, 1948. In place of a float gauge referred to in the Process Research Progress Report, March 1--31, 1984, a Uehling Tank-O-Meter will be used on the chemical solution tanks for the W. D. Building. Word was also received that the steam ejector has been shipped. It can be expected within the next few days. This item will complete the equipment to be used for the r… more
Date: December 31, 1948
Creator: Hamilton, P.M.
Partner: UNT Libraries Government Documents Department
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Physics group progress report, July 1--31, 1948

Description: Preparatory work is described for the determination of the vapor pressure of postum (Polonium 210), selenium being used as a surrogate in construction and testing of the apparatus to measure vapor pressure. Design modifications of a vacuum balance are also described.
Date: December 31, 1948
Creator: Knauss, H.P.
Partner: UNT Libraries Government Documents Department
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The changes in the blood of humans chronically exposed to low level gamma radiation

Description: Ten individuals received an average of 0.211 roentgens of gamma radiation per week for a 77 period week (December 1946-June 1948) for a total average dose of 16.21 roentgens. During this period these 10 men carried out an experiment involving materials which emit gamma radiation and were monitored by daily film badges. The radiation delivered during a week was received in a five day work week and usually they received approximately one-half of their weekly dosage during one of the five days. A … more
Date: December 31, 1948
Creator: Knowlton, N.P. Jr.
Partner: UNT Libraries Government Documents Department
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Electrodeposition research progress report, August 1--31, 1948

Description: Studies to test the conversion of production solutions to postum (polonium 210) solutions of hydrofluoric acid involving compressed teflon are documented. Several experiments to assess the effect on production plating yields are described including varying time between rinses, current density, and use of detergents. Varying the time between rinses showed no correlation with the neutron counts on the finished gauzes.
Date: December 31, 1948
Partner: UNT Libraries Government Documents Department
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