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Capture Cross Section of Pb208 for C Neutrons
From abstract: "Using the method of induced radioactivity, the capture cross section of Pb[^]208 for C neutrons is found to be .00045 ± .00015 x 10[^]-24 cm[^]2. This is definitely lower than the value of .001 x 10[^]-24 reported by Maurer and Ramm."
Date:
November 5, 1943
Creator:
Levinger, Joseph S., 1921-; Compton, A. H.; Allison, Samuel King, 1900-1965; Watson, W. W. & Snell, A. H.
Object Type:
Report
System:
The UNT Digital Library
Report No. EC-2, Dated from March 24, 1943 to November 5, 1943, Contained in the Engineer's Log Book
This technical report consists of day by day experimental data reported in Engineer's Log book, Electro-Chemistry Department, supporting Report No. EC-11 dated November 15, 1944, by W. L. Grube, Research Laboratories Division, General Motors Corporation.
Date:
November 6, 1943
Creator:
Grube, William L.
Object Type:
Report
System:
The UNT Digital Library
Report on Methods of Preparation of Inorganic Fluorides
From abstract: "Frequently it has been desirable to prepare pure anhydrous metal fluorides. Several general methods have proved satisfactory depending on the type of fluoride to be prepared."
Date:
November 11, 1943
Creator:
Priest, H. F.
Object Type:
Report
System:
The UNT Digital Library
Memorandum on Uranium Ore Processing
The following memorandum discusses experiments and methods to recover uranium from Colorado-Utah sandstone and leaving the vanadium in the tails, improving filterability.
Date:
November 19, 1943
Creator:
Brimm, E. O. & Gailey, A. J.
Object Type:
Report
System:
The UNT Digital Library
Improved Directions for the Preparation of X(OCâ‚‚Hâ‚…)â‚…
This report was written to replace the directions submitted on April 12, 1943 with improved directions for the preparation of chemical solution X(OCâ‚‚Hâ‚…)â‚….
Date:
November 20, 1943
Creator:
Gilman, Henry
Object Type:
Report
System:
The UNT Digital Library
Effect of Radiation on Chromate in Water. III. Inhibition Experiments in the CP-3 Pile
Abstract. The effect of various inhibitors on the production of CrIII in W waters containing chromatic has been studies at a variety of pH's in the CP-3 pile. The addition of 2 ppm NaClO3 appears to have little effect a a pH of 5.3, but 2 ppm NaClO3 cr 0.15 ppm of Cl2 (in the form of NaOCl) somewhat decreases the amount of chromatic reduced at a pH of 7.1. The inhibition is not great enough, however, to reduce the amount of CrIII formed to the maximum concentration permissible at W (0.02 ppm). The addition of 3 ppm (NH4)2S2O3 as an inhibiter will permit W water to be used a a Ph of 7.0, but not at a pH of 6.5 as far as chromate reduction is concerned. The concentration of CrIII would be 0.01 ppm and 0.05 ppm, respectively, after one passage through the pile. Previous conclusion as to the effects of temperature, pH, intensity and the addition of ammonium persulfate, which had been reached from experiments with simulation W water, have been checked by studies with solutions made from water chipped directly from Hanford. All of the effects noted were found to be similar to those already reported, …
Date:
November 2, 1944
Creator:
Bowman, M. G.; Burton, Milton, 1902-; Davis, S. G., 1907-; Ghormley, J. A. & Gordon, S.
Object Type:
Report
System:
The UNT Digital Library
The Effects of Neutron Bombardment on the Electrical Resistance of Aluminum, Beryllium and Tuballoy (Uranium)
Abstract. Wigner effects on aluminum, beryllium, and tuballoy have been studied by the electrical resistance method. Samples were exposed during an interval which would have produced an increase of approximately 22% in resistance of AGOT-K graphite. The resistance of tuballoy increased approximately 1%. It is shown that the increase can be accounted for by the amount of fission product impurity formed during the exposure. Neither aluminum nor beryllium showed any change. In the case of Be, the Wigner effect may be obscured, to some extent, by the approximately .2 - .3 atom % of impurity present in the samples. Based on the increase occurring in ADOT-K graphite, a change of approximately .2 - .5 x10-6 ohm-om might be expected in the case of Be. The accuracy of the method was sufficiently great to detect a change of this magnitude. Other experiments with Be will be undertaken when purer samples are available. Meanwhile, some samples of the present type ae being subjected to further irradiation.
Date:
November 2, 1944
Creator:
Royal, J.
Object Type:
Report
System:
The UNT Digital Library
Ames Project, Chemical Research - General, for the Period September 10, 1944 to October 10, 1944
Technical report with short articles on (1) Uranium-oxygen system compositions UO2 to U3O3; (2) Thorium hydride; (3) Production of cerium; and (4) Production of thorium.
Date:
November 9, 1944
Creator:
pedding, F. H. (Frank Harold), 1902- & Wilhelm, H. A.
Object Type:
Report
System:
The UNT Digital Library
Manufacturing Specifications for the Higinbotham Scaler
Technical report which includes a description of scaling action in a Higinbotham circuit, of operation of the output circuit, of operation of the regulated high voltage supply. Acceptance and performance specifications are given. also included are cuts showing the bottom and top view of a scaler of this type. The scaling circuit diagram and major parts list is attached. To facilitate testing, the circuit of a satisfactory pulse generator is included together with a cathode - follower.
Date:
November 9, 1944
Creator:
Wakefield, Ernest
Object Type:
Report
System:
The UNT Digital Library
Metallurgical Laboratory, Chemical Research - Radiation Chemistry, Report for the Month Ending October 31, 1944
Technical report with short reports on (1) Effect of radiation on organic compounds; (2) Effect of radiation on separation processes; (3) Effect of radiation on water and aqueous systems; and (4) Effect of neutrons on graphite.
Date:
November 14, 1944
Creator:
Hogness, T. R. (Thorfin Rusten), 1894- & Burton, Milton, 1902-
Object Type:
Report
System:
The UNT Digital Library
Supplementary Report on Inter River District, Green River Desert Area, Utah
A supplementary report on Inter River District Green River Desert Area, Utah, regarding a careful estimation of the potential pore reserves of the area.
Date:
November 1945
Creator:
Smith, Clay T. & Hill, John W.
Object Type:
Report
System:
The UNT Digital Library
Extraction of Uranyl Nitrate and Thorium Nitrate by Organic Solvents
Abstract. The separation of uranyl nitrate from aqueous solutions of 0.635 M thorium nitrate, 3 M nitric acid and 3 M calcium nitrate by extraction with organic solvents has been investigated. Solvents which gave good separations were 2-tthyl hexyl acetate, ethyl benzoate, n-butyl either and beta-beta- dichloroethyl ether. In general, higher esters, ethers and alcohols are better for separating uranium from thorium that the lower homologues. Several solvents were tested at lower nitric acid concentrations. Dibutyl cellosolve gave a very good separation when the solution was 0.1 M nitric acid. Of the solvent mixtures studied that of equal parts of n-butyl ether and dibutyl cellosolve gave a good separation.
Date:
November 5, 1945
Creator:
Johnson, O. & Newton, A. S.
Object Type:
Report
System:
The UNT Digital Library
Mass Spectrographic Analysis of Solids
Technical report regarding he purpose of the investigation was to evaluate the Chicago mass spectrograph as an analytical instrument for solids.
Date:
November 15, 1945
Creator:
Garrison, Warren Manford, 1915-
Object Type:
Report
System:
The UNT Digital Library
The Determination of Thorium in Uranium-Thorium Alloys, Using Cupferron
Technical report describing that the use of controlled amounts of carbonate, acting both as complexing agent buffer led to a fairly satisfactory procedure for the determination of Th in Th-U alloys, using cupferron. The alloy, dissolved in NHO2, in the presence of HF, is treated with H2SO4 and the mixture is evaporated in SO2 fumes. The solution is diluted and (NH4)2CO2 is added. Th is precipitated from this solution with cupferron. The precipitate is weighed as ThO2 after ignition. An accuracy of 6% was obtained. A method was developed specifically for the determination of Th in U-Th alloys containing 1 to 10% Th. An ion exchange resin in column is used to separate Th from U, with NH2OH-HCl as complexing agent. The Th is then precipitated, ignited, and weighed in the conventional manner.
Date:
November 23, 1945
Creator:
Eckert, A. C. & Bane, R. W.
Object Type:
Report
System:
The UNT Digital Library
Studies of Porphyrin Metabolism, 3. The Relation of Erythropoiesis to the Excretion of Coproporphyrin by Dogs and Rabbits, and to the Concentration of Coproporphyrin and Protoporphyrin in Rabbit Erythrocytes
Report discussing studies regarding porphyrin excretion and hemoglobin metabolism in animals with phenylhydrazine anemia, and studies regarding the coproporphyrin and protoporphyrin in the red blood cells of rabbits.
Date:
November 25, 1945
Creator:
Schwartz, Samuel; Glickman, Marcia; Hunter, Rosie & Wallace, Jean
Object Type:
Report
System:
The UNT Digital Library
The Rapid Determination of Nitric Acid and Thorium in Thorium Nitrate Solutions
Abstract. The physico-chemical methods of determining nitric acid and thorium nitrate in solutions containing these two materials were investigated. Conductimetric titration with sodium hydroxide can be used to determine nitric acid accurately. the titration of thorium nitrate requires a separate standardization of the base however, since a basic salt is precipitated rather the normal hydroxide. The titration of thorium is reproductible however, so and empirical standardization can be used. The measurement of the specific gravity and refractivity of the solutions provides a method of determining the concentrations in terms of these two variable. Equations for the concentrations in terms of specific gravity and refractively are given, both in pure solutions and in those saturated with methyl isobutyl ketone.
Date:
November 27, 1945
Creator:
Newton, A. S.; Powell, J. (James), 1932- & Figard, P
Object Type:
Report
System:
The UNT Digital Library
A Non-Gravimetric Method for the Determination of Uranium on Platinum Discs
From abstract: "This paper discusses a method for the determination of uranium on platinum discs which does not involve direct weighing of the deposited film. A statistical analysis of the results obtained indicates that the procedure is more consistent than that based on a gravimetric method and offers a relatively quick and convenient means for obtaining uranium assay results where an accuracy of approximately 99% is desired."
Date:
November 1, 1946
Creator:
Lilly, R. C.
Object Type:
Report
System:
The UNT Digital Library
Factors Affecting the Chlorination of Uranium Compounds with Liquid Carbon Tetrachloride
Abstract: "A summary of the contents of numerous reports on the liquid phase proportion of uranium chloride."
Date:
November 11, 1946
Creator:
Lowrie, Robert Sydney & Larson, C. E.
Object Type:
Report
System:
The UNT Digital Library
The Reduction of Uranium Trioxide by Ethyl Alcohol
Abstract: The effect of temperature upon the rate of reduction of uranium trioxide by ethyl alcohol has been investigated, and a comparison of the reactivity of the dioxide produced at various temperatures has been made. The percent of carbon in the end product has been studied with respect to both temperature of reduction and length of exposure to alcohol. Optimum conditions for the reduction have been suggested.
Date:
November 18, 1946
Creator:
Haines, B. M. & Calkins, V. P.
Object Type:
Report
System:
The UNT Digital Library
Argonne National Laboratory Biology Division Quarterly Report: August to October, 1946
From introductory paragraph: "This is the first quarterly report of the Biology Division of the Argonne National Laboratory. During the three-month period covered by this report, a large share of the time of many investigators has been spent in collating work done under the Biology Section of the Metallurgical laboratory for publication in the Plutonium Project Record. The large amount of work done under wartime pressure has made this, as in other divisions and projects, an important part of the transition to the post-war period."
Date:
November 21, 1946
Creator:
Bruss, Austin M.
Object Type:
Report
System:
The UNT Digital Library
Identification and Characterization of Shielded Isotopes in Uranium Fission
Abstract: "The first shielded isotope, 34th Br-82 has been isolated in fission. Its fission yield is about 3 x 10-(-5)%. This is a direct measurement of the yield of a primary fission product and gives direct information as to the distribution of nuclear charge among primary fission fragments of given mass numbers as discussed by Glendenin and Coryell."
Date:
November 27, 1946
Creator:
Feldman, Milton H.
Object Type:
Report
System:
The UNT Digital Library
Investigations of Domestic Radioactive Raw Materials, Beryllium, and Other Trace Elements Monthly Report: October 1947
Monthly report of the U.S. Geological Survey's trace element investigations including an outline of field work, laboratory work, and staff activities that have been completed or are in process.
Date:
1947-11~
Creator:
Geological Survey (U.S.). Trace Elements Office.
Object Type:
Report
System:
The UNT Digital Library
A Method for the Determination of Traces of Metals: [Part] 4. Polarographic Studies.
Report describing an updated method to determine traces of metals under polarographic studies, which operates at a higher cathode current density with a small area of the anode immersed in the solution where an appreciable quantity of iron was present in the solutions that were to be polarographed. The results of these studies are also presented.
Date:
November 1947
Creator:
Bricker, Clark E.; Furman, N. Howell & McDuffie, Bruce
Object Type:
Report
System:
The UNT Digital Library
Quarterly Report August 1947 to November 1947, Biology Division
The following document is a compilation of quarterly reports from August 1946 to November of 1947 from the Biology Division of the University of Chicago.
Date:
November 1, 1947
Creator:
Brues, Austin M.
Object Type:
Report
System:
The UNT Digital Library