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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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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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Calorimetry research progress report, March 1--31,, 1948

Description: Sixty-eight samples were assayed. The 5 calorimeters of type 30 were finished. Calorimeter 36, whose construction has been started, is an improved version of 30. A system of switches has been devised. A simple, fast, insensitive calorimeter for measuring high activity samples is being tested. The calculations on the half-life of postum were checked.
Date: December 31, 1948
Creator: Eichelberger, J.F.
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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Control Section progress report, April 1--30, 1948

Description: From the Assay group, information is given for production concerning routine assaying, calorimetry, and neutron detection, unit 5, and future plans. The Micro-Assay group reports on production, development, research, units 5 & 6, and future plans. The Inventory group gives a report on production relating to alpha and DM slides, development of hoods,poppy counters and safe barriers, research, and future plans. Control Section Administration also reports on production of neutron counters, develop… more
Date: December 31, 1948
Creator: Rembold, E.A.
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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Electrodeposition progress report, October 1--31, 1948

Description: The general points being considered in the construction of equipment for the production of High Level Postum Gauzes were mentioned in the last progress report. A more detailed discussion of the progress to date will be made here. The development work of plating postum out of hydrofluoric acid has proceeded to the point where it is desired to make some runs plating out quantities of postum from 10--250 units per gauze. The following points have been considered in a report for limited distributio… more
Date: December 31, 1948
Creator: Orban, E.
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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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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Electrodeposition research progress report, July 1--31, 1948

Description: The cell used in production plating has a platinum anode and a platinum cathode. The potential at which the platinum cathode rests is not independent of the current, bat varies with it. In order to separate postum from other cations by electroplating out of solution, it is necessary to establish the plating potential at a value which will allow complete plating of postum, but will preclude the deposition of as many other cations as possible. This potential has been found to be about 0.00 v. to … more
Date: December 31, 1948
Creator: Orban, E.
Partner: UNT Libraries Government Documents Department
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Electrodeposition research progress report, March 1--31, 1948

Description: Plating of Postum out of Nitric Acid and Hydrofluoric Acid Solutions -- W. Abel and W. Raiff. Postum was plated out of 1.5 normal nitric acid and 1.0 normal hydrofluoric acid under similar conditions. The hydrofluoric acid plate was better appearing, and had a much higher curie density. However, neutron counts in these runs were quite similar. Neutron Counts -- W. Abel and W. Raiff. A study of the change of neutron counts over a period of time was started. Conversion of Active Hydrofluoric Acid… more
Date: December 31, 1948
Creator: Orban, E.
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, August 1--31, 1948

Description: Various studies centering on problems and their solutions encountered in electroplating production at Mound Laboratory. Some studies described include construction of the Scaler-Multiplier EL-229, operation of a methane-flow proportional counter, life-time decreases of production half-cells, and use of vibrating reed electrometer.
Date: December 31, 1948
Creator: Heyd, J.W.
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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Electronics progress report, October 1--31, 1948

Description: Upon completion of preliminary tests on the satisfactory operation of the Vibrating Reed Electrometer as a sensitive indication of alpha activity at the cathode of a plating cell, attention was directed toward the study of the detection of activity at the anode of the cell. Group 3 anticipates a lengthy study of cathodic and anodic deposition potentials of radioactive elements in solution. With the standard Research Plating Control, cathodic studies could be accomplished with relative ease, but… more
Date: December 31, 1948
Creator: Heyd, J. W. & Ohmart, P. E.
Partner: UNT Libraries Government Documents Department
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Gamma scale chemistry progress report, August 1--31, 1948

Description: Attempts for preparation and x-ray diffraction studies of postum (polonium 210) bromide and dioxide are described. Surrogate parallel studies employing parallel compounds of tellurium and thorium are also related.
Date: December 31, 1948
Creator: Martin, A.W.
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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Gamma scale chemistry progress report, May 1--31, 1948

Description: An attempt has been made to prepare a compound of postum (Polonium 210) analogous to K{sub 2}{sup TeBr}{sub 6}. A preliminary experiment indicates possible preparation of bromides of postum and that these bromides are analogous to the chloride of postum. Photomicrographs of two crystalline forms of a product resulting from the reaction of bromine and postum are included in this report together with procedure used to form these crystals. Intermediate compounds formed in the attempted preparation… more
Date: December 31, 1948
Creator: Martin, A.
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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Health Division Research progress report, December 1-31, 1948

Description: This document details the activities of the Health Division of the Mound Laboratory during the month of December 1948.
Date: December 31, 1948
Creator: Davis, R. K.; Jolley, WP. & Spoerl, E. S.
Partner: UNT Libraries Government Documents Department
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