10 Matching Results

Search Results

Advanced search parameters have been applied.

Progress Report: Development and Construction of Alpha-Counting Equipment

Description: Abstract: An ionization chamber for use in counting alpha particle activity from the air has been devised for counting samples collected with the electrostatic precipitator. The chamber is an adaptation of the breech-locking standard chamber, with a cylindrical high voltage electrode into which the collection foil is placed, and a coaxial rod as a collecting electrode. A geometrical efficiency of close to 50% is obtained.
Date: July 4, 1944
Creator: Borkowski, C. J.; Dandl, R. A.; East, J. K. & Firminhac, R. H.
Partner: UNT Libraries Government Documents Department

A Direct Current Emission Regulator

Description: The following report describes a current beam modulation designed to replace the standard regulator and to achieve an ion beam free from amplitude modulation.
Date: August 4, 1945
Creator: White, J. R. & Cameron, A. E.
Partner: UNT Libraries Government Documents Department

The Development of a Melting Method for Conversion of Zirconium Sponge to Corrosion Resistant Ingot

Description: This report covers an investigation meant to find the feasibility of producing corrosion resistant zirconium from sponge by special melting techniques. The zirconium metal has certain required specifications, such as: the metal must be free from bafnium, and it must be free from other impurities of undesirable neutron cross section.
Date: May 4, 1950
Creator: National Research Corporation (U.S.)
Partner: UNT Libraries Government Documents Department

The crystal structure of neptunium metal

Description: From abstract: "In this paper the number of displaced atoms in equilibrium in a thin cyclotron-bombarded target is estimated as a function of the bombarding particle energy and target temperature."
Date: January 4, 1952
Creator: Zachariasen, William H.
Partner: UNT Libraries Government Documents Department

Single Bend Tests on Welded Zirconium and Zirconium-Tin Alloys

Description: Introduction: "Since it has been found that zirconium and zirconium-tin alloys may be embrittled by certain heat treatments, it was decided to determine if welding of these materials affects their ductility in any way. A single bend test in both the longitudinal and transverse directions was used for evaluation of the variables considered."
Date: June 4, 1952
Creator: Hoge, H. R.
Partner: UNT Libraries Government Documents Department

Project "A" Final Summary Report

Description: Report discussing the results of Project "A," which had three main components: "Effect of P2O3 Concentration on the Distribution Coefficient for Uranium Between Crude Phosphoric Acid and O.P.P.A.," "Effect of Chloride Concentration in Phosphoric Acid on the Distribution Coefficient for Uranium Between O.P.P.A. and Phosphoric Acid," and "The Use of Di-Isobutyl Carbinol in the Preparation of a Solvent to Extract Uranium from Phosphoric Acid (N.P.P.A.)."
Date: January 4, 1954
Creator: Wilkinson, G. E.
Partner: UNT Libraries Government Documents Department

Properties of Uranium-Bismuth Reactors for Computer Programs

Description: "This memorandum is a survey of the properties of [U-Bi] reactors for U235 as a fuel and U233 as a fuel using a larger density for the graphite [for calculations]. This will include properties of the core and various reflectors which will be useful for large machine calculations of reflector savings, fast and thermal fluxes, and quantities of interest based on two-group calculations."
Date: January 4, 1955
Creator: Mozer, B.
Partner: UNT Libraries Government Documents Department