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The Preparation of Tungsten Hexafluoride

Description: From introductory paragraph: "Because of the possibility that tungsten hexafluoride might occur as an impurity in uranium hexafluoride it seemed worthwhile to prepare some of the material in order to become familiar with its mode of preparation, reactions, etc."
Date: June 1942
Creator: Priest, Homer F. & Colton, R.
open access

Viscosities and Densities of Fluorolube Oils

Description: Abstract: Since the viscosity-temperature relationships of fluorocarbons are somewhat unusual, when compared to hydrocarbons, for example, it was decided to measure the viscosities, at several temperatures, of various fluorolube oils. The calculation of the viscosity of a blend of oils is at best an uncertain operation, varying considerably with the method used. A comparison of various methods was indicated, in order that reasonably accurate values might be assumed for theoretical composites.… more
Date: April 28, 1943
Creator: Haendler, H. M.; Burger, L. L.; Sheldon, Z. D. & Barber, E. J.
open access

A Colorimetric Method

Description: From abstract: "This paper gives a method for determining Uranium using sodium cresotate as a colorimetric reagent. A precision is obtained of better than 2%. In carrying out analyses for Uranium in corrosion products by existing methods such as ignition to the oxide, silver reductor, or titration with ceric sulfate, it became apparent that a rapid, fairly accurate method for determining uranyl ion would be of great value. Such a method is described in this paper. The most logical color to use … more
Date: June 30, 1943
Creator: Priest, H. F. & Priest, G. I.
open access

Capture Cross Section of Pb208 for C Neutrons

Description: 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.
open access

Physical Properties of Uranyl Sulfate Solutions

Description: Abstract: Measurements are reported of the solubility of uranyl sulfate in water at several temperatures, of the density of uranyl sulfate solutions as a function of concentration, of the variation of density of uranyl sulfate solutions of three different concentrations over a temperature range from 0[degree]C. to about 93[degree]C., and of the pH of uranyl sulfate solutions as a function of concentration as well as of temperature. The pH measurements were taken on uranyl sulfate samples prepar… more
Date: December 15, 1943
Creator: Helmholz, Lindsay. & Friedlander, G.
open access

The Statistics of the Hypocritical Water Boiler

Description: From introductory paragraph: "In a slightly hypocritical water boiler the introduction of a single neutron may give rise to a fairly large burst of neutrons which dies out slowly. As was shown some time ago by Frankel and Nelson with the help of A. Horn the statistics of this multiplication process can be treated in a simple way for the hypothetical case that the number of neutrons produced per fission is two."
Date: January 8, 1944
Creator: Frankel, S. P.
open access

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.
open access

Test Results on Clinton Alpha Amplifier Used with an Offner Columbia Scaler

Description: Technical report describing development of the Clinton alpha amplifier. The circuit for the Clinton alpha amplifier which is used with an Offner scaler is shown attached to the report. It consists of a pre-amplifier mounted in a cylindrical alpha chamber, followed by a three state amplifier and a pulse height selector in a separate cabinet. Pulses are fed from the pulse height selector in the amplifier to the input tube of the Offner scaler. Through the third stage of the amplifier, this circu… more
Date: July 1, 1944
Creator: Ostdahl, H. E.
open access

Identification and Crystal Structure of Barium Hydrogen Phosphate

Description: From abstract: "The report describes the complete structure of barium hydrogen phosphate, Ba HPO4, as determined by means of x-ray diffraction. The crystal is orthorhombic, with cell dimensions given by a=5.71 A b=7.05 A c=4.61 A. The calculated density is 4.15gm/cm[^]3 for two molecules in the unit cell. The space group is C[subscript]2v[superscript]7-pmn. The barium, phosphorus, and two sets of oxygen lie in the plane of symmetry. The third set of oxygens are in general positions. Parameters … more
Date: August 8, 1944
Creator: Mooney, Rose C. L.; Compton, A. H.; Allison, Samuel King, 1900-1965; Stearns, J. C. & Zachariasen, William H. (William Houlder), 1906-1979
open access

Test Results on Bias Setting for the Chicago Scaler Offner Models

Description: Abstract: The counting accuracy of the Chicago Scalers, Models 961A and 961B, is a function of the bias setting of the limiter (V2). this report gives quantitative data supporting this thesis. A method of making bias settings is suggested. These tests were run at the suggestion of Mr. V. C. Hanson.
Date: September 11, 1944
Creator: Bradley, Wendell H.; Epstein, Bernard. & Wakefield, Ernest
open access

The Thermal Conductivity of Liquid UF6

Description: From introduction: "The measurement of the thermal conductivity of liquid TF6 presented unusual difficulties because of two of its properties which necessitated working with a closed system. The properties were (1) the liquid can exist as such only above 64.05°C. at which temperature its saturated vapor pressure is 1140 mm. of mercury, and (2) the compound reacts rapidly with moist air. Also because of the liquid's extremely corrosive nature, it was necessary to design a cell of special corrosi… more
Date: October 11, 1944
Creator: Priest, Homer F.
open access

Manufacturing Specifications for the Higinbotham Scaler

Description: 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
open access

Accumulation and Distribution of Radioactive Strontium, Barium-Lanthanum, Fission Mixture and Sodium in Goldfish

Description: This report details an experiment undergone to determine the amount of radioactive strontium, barium-lanthanum, fission mixture, and sodium accumulated by and distributed within non-feeding goldfish. The report includes tables detailing the findings.
Date: February 15, 1945
Creator: Prosser, C. Ladd (Clifford Ladd), 1907-2002; Pervinsek, William; Arnold, Jane; Svihla, George & Tompkins, P. C.
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