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Capture of Fast Neutrons by Pb208

Description: From abstract: "Comparison of the activity produced by fast neutrons on lead with other activations corroborates the assignment of the 3.2 hr. activity as Pb209, and the assignment of the reaction as capture of fast neutrons. Two different measurements show that the neutrons captured have energies greater than 100 KEV. This average capture cross section for primary neutrons from 7.5 MEV deuterons on a thick target of beryllium is measured as 10[^]-27 ca[^]2."
Date: April 17, 1944
Creator: Levinger, Joseph S., 1921-; Compton, A. H.; Allison, Samuel King, 1900-1965; Watson, W. W. & Snell, A. H.
Partner: UNT Libraries Government Documents Department
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Separation of Iron and Tuballoy With Phthallic Acid

Description: Introduction: This report embodies the results of an investigation as to the possibility of removing the bulk of the iron from gunk solutions of various concentrations by precipitation of the iron with phthallic acid and subsequent precipitation of tuballoy. The method consists of dissolving the phthallic acid in the gunk solution and then adding NH₃ to a suitable pH, precipitating the iron, and leaving the tuballoy in solution.
Date: January 17, 1945
Creator: Hoffman, R. E.; Armstrong, G. M.; Miller, A. J. & Gates, J. W., Jr.
Partner: UNT Libraries Government Documents Department
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Range of U235 Fission Fragments in Photographic Emulsion

Description: From abstract: "A fine-grain emulsion has been found which is sensitive only to the densely ionizing fission fragments. This emulsion was soaked in uranyl acetate and exposed to slow neutrons. The ranges in the emulsion of about four-hundred fission fragments were measured. The resulting distribution shows a sharp maximum at 23 microns of emulsion. No ternary fissions or large-angle scattering of fragments were observed."
Date: October 17, 1945
Creator: Richards, H. T.
Partner: UNT Libraries Government Documents Department
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The Effect of Temperature on the Distribution of Nitric Acid Between Dibutyl Carbitol and Aqueous Solutions of Copper Nitrate

Description: This report follows a test made to determine the effect of temperature on the distribution of nitric acid between "carbitol" and gunk, extracting a number of samples of aqueous copper nitrate with samples of "carbitol" of various acidities. The data obtained is covered in Table 1.
Date: January 17, 1946
Creator: Shacklett, C. D. & Wilcox, W. J., Jr.
Partner: UNT Libraries Government Documents Department
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Process Monitor, Mark 10, Model 20

Description: This report describes a specific apparatus used to monitor the intensity of gamma radiation. The report includes a diagram of the apparatus.
Date: August 17, 1946
Creator: Jesse, William P.
Partner: UNT Libraries Government Documents Department
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Recovery of Uranium From Contaminated Precipitron Oil

Description: Abstract: The distillation and residue extraction recovery procedures developed for the recovery of uranium from Kinney and diffusion pump oil, were applied to contaminated precipitron oil. The effectiveness and advisability of using the method, in whole or in part, is discussed, and various recommendations for processing this particular type of oil are presented. Additional contaminating substances present in this type of oil added to the complexity of the problem but a satisfactory recovery procedure was, nevertheless, successfully developed.
Date: April 17, 1947
Creator: Lee, J. E.; Aikin, L. M. & Susano, C. D.
Partner: UNT Libraries Government Documents Department
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Effects of Total Body Z Irradiation of Rats. Part I, Lethal Action of Single, Paired, and Periodic Doses

Description: Abstract: Exposure of Sprague Dawley white rats to single doses of 900 kvp X radiation demonstrated a medium lethal dose of 600 r which was not markedly dependent upon sex, weight, or, in the case of females, stage of the estrous cycle at the time of irradiation. Deaths within 30 days were most frequent between the fourth and eighth, and between the tenth and fifteenth post- irradiation days, indicating the existence of at least two processes leading to death in the "acute" period.
Date: June 17, 1947
Creator: Hagen, Charles W., Jr. & Simmons, Eric L.
Partner: UNT Libraries Government Documents Department
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The Mathematical Development of the End-Point Method

Description: Detailed study of the mathematically developed end-point method and its application to the Milne kernel.
Date: June 17, 1948
Creator: Frankel, S. & Goldberg, S.
Partner: UNT Libraries Government Documents Department
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Summary of the Research Progress Meeting June 17, 1948

Description: This summary of the research progress meeting on June 17, 1948 discusses the following topics: (1) Potassium 43 (R. Overstreet); (2) Recoils (A. Ghiorso); (3) M.I.T. accelerator conference (W. Panofsky); and (4) Cosmic rays (Prof. Louis Le prince - Ringuet, France)
Date: June 17, 1948
Creator: Folden, Margaret Foss
Partner: UNT Libraries Government Documents Department
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Further Critical Experiments on a Small Reactor of Enriched U-235 with Al-H₂O Moderator and Beryllium Reflector

Description: From introduction: "The purpose of the present report is to describe briefly certain improvements that have been made in the experimental facilities and to present the results of further measurements on critical masses and spatial neutron flax distributions in Be reflected reactors having square and thin slab geometries."
Date: August 17, 1948
Creator: Martin, A. B. & Mann, M. M.
Partner: UNT Libraries Government Documents Department
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Operation of the 184" Cyclotron

Description: The operation of the 184" synchro-cyclotron is reviewed in terms of the theory as developed by the authors. Certain relevant data on the properties of the magnet and rotating condenser are also presented.
Date: May 17, 1949
Creator: Henrich, L. R.; Sewell, D. C. & Vale, J.
Partner: UNT Libraries Government Documents Department
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Materials Testing Reactor Project : Addendum to Reactor Building Report, Design Report No. 26A

Description: "Changes, corrections and additions to the original report are included in this addendum. These are brought about by further development of the design by Blaw-Knox, ANL and ORNL. The changes are listed in accordance with the main headings, pages and paragraphs to which they apply."
Date: November 17, 1949
Creator: Link, L. E. & Guzik, R. F.
Partner: UNT Libraries Government Documents Department
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The Effect of Gases on the Wetting of Steels by Liquid Bismuth

Description: The effect of air, nitrogen, helium, argon, and a mixture of twenty volume percent of hydrogen in argon on the wetting of a stainless steel (Type 446), a two percent chromium-one half percent molybdenum type steel, and a plain carbon type steel by liquid bismuth was investigated
Date: January 17, 1951
Creator: Heckman, R. A.
Partner: UNT Libraries Government Documents Department
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Analytical studies of the estimation of beryllium oxide in beryllium metal

Description: From abstract: The estimation of beryllium oxide in beryllium metal depending on the differential solubilities of the two material in dilute hydrochloric acid is presented. The results compare favorably with the present beryllium chloride volatilization procedure. Alternate methods are described, and the limitations and possible errors are discussed.
Date: April 17, 1951
Creator: Rynasiewicz, Joseph
Partner: UNT Libraries Government Documents Department
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Loop-Type Liquid-Gas Separator

Description: The following report is a study of the separating qualities of a loop-type separator that can obtain separation with a smaller pressure drop.
Date: November 17, 1951
Creator: Barlow, J. W.; Jones, F. H. & Reuther, R. H.
Partner: UNT Libraries Government Documents Department
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A Cement Base for the Hot Filament Mass Spectrometer Source

Description: The following document is meant to inform the reader on the makings of a cement base for the hot filament mass spectrometer source as part of a publication in the review of scientific instruments, "Laboratory and Shop Notes".
Date: January 17, 1952
Creator: Hand, John E.
Partner: UNT Libraries Government Documents Department
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Hydrogen Peroxide Analysis and Decomposition in Chromate Solutions

Description: Abstract: "A novel procedure employing ion exchange resins was developed to separate chromate ions from hydrogen peroxide, permitting, permitting the subsequent analysis of peroxide to determine its decomposition in sodium chromate solutions. At high pH's, peroxide was absorbed anionically on the ion exchange resins along with chromate. By selecting a resin which would be effective at nearly neutral conditions, chromate was satisfactorily separated from peroxide. It was found that the rate of peroxide decomposition in slightly alkaline sodium chromate solutions was dependent on temperature, pH, aeration, and chromate concentration. No significant effect on decomposition was caused by visible light."
Date: March 17, 1952
Creator: Rynasiewicz, Joseph & Ryan, J. W.
Partner: UNT Libraries Government Documents Department
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