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Absolute Thermal Neutron Determination. Part 2. Absolute Beta Counting of Indium Foils

Description: Correction factors for the effect of thickness on the selfscattering, self-absorption, and backscattering of beta particles from indium foils were determined for irradiated foils of 0.03 to 100 mg/cm/sup 2/. The data were corrected for the activity produced by epithermal neutrons, self-shielding of thermal neutrons by the foil during irradiation, the backscatter from the foil support, and the contributions of gamma and x rays to the counting rate. The multiple beta spectra of indium produced a … more
Date: October 1, 1955
Creator: Koontz, R. L.; Greenfield, M. A. & Jarrett, A. A.
Item Type: Refine your search to only Report
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Absorption Characteristics of Long Soil Columns

Description: The purpose of this report is to present the information obtained relative to the characteristic adsorption of radioisotopes in a long (forty feet) laboratory soil column treated with a high salt, process waste of high activity density. The movement of adsorbed cations in a soil column subjected to prolonged leeching by water also was determined.
Date: May 1, 1955
Creator: McHenry, J. R.
Item Type: Refine your search to only Report
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Adaptation of Combustion Principles to Aircraft Propulsion, Volume 1, Basic Considerations in the Combustion of Hydrocarbon Fuels with Air

Description: The report summarizes source material on combustion for flight-propulsion engineers. First, several chapters review fundamental processes such as fuel-air mixture preparation, gas flow and mixing, flammability and ignition, flame propagation in both homogenous and heterogenous media, flame stabilization, combustion oscillations, and smoke and carbon formation. The practical significance and the relation of these processes to theory are presented. A second series of chapters describes the observ… more
Date: April 1, 1955
Creator: Barnett, Henry C. & Hibbard, Robert R.
Item Type: Refine your search to only Report
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Aerodynamic and hydrodynamic characteristics of models of some aircraft-towed mine-sweeping devices : TED No. NACA AR 8201

Description: This report details a study that was conducted by the U.S. Naval Air Development Center to "determine the feasibility of several airborne magnetic mine-sweeping methods. The advantages of a satisfactory airborne method are greater safety and speed than are possible with existing surface methods." The configurations and results of the double Q-sweep, the modified double-catenary sweep, and the M-sweep are examined.
Date: December 1, 1955
Creator: Shanks, Robert E.
Item Type: Refine your search to only Report
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Analysis of Borax Experiments

Description: An analysis of the self-limitation of power excursions by steam production in heterogeneous water-moderated reactors using MTR- type fuel elements seems to give excellent agreement with Borax data on both fuel plate temperature rise and total energy for excursions in which the reactor is initially at saturation temperature. A simple model for steam production is developed from thermodynamic and heat diffusion considerations. In those cases for which the reactor is substantially sub-cooled, it a… more
Date: January 1, 1955
Creator: Edlund, M.C. & Noderer, L.C.
Item Type: Refine your search to only Report
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Analysis of potential impacts of Flaming Gorge Dam hydropower operations on archaeological sites

Description: An archaeological field study was conducted along the Green River in the areas of Little Hole and Browns Park in Utah and Colorado. The purpose of the study was to measure the potential for hydropower operations at Flaming Gorge Dam to directly or indirectly affect archaeological sites in the study area. Thirty-four known sites were relocated, and six new sites were recorded. Information was collected at each site regarding location, description, geomorphic setting, sedimentary context, vegetat… more
Date: December 1, 1955
Creator: Moeller, K. L.; Malinowski, L. M. & Hoffecker, J. F.
Item Type: Refine your search to only Report
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Analytical evaluation of effect of inlet-air temperature and combustion pressure on combustion performance of boron slurries and blends of pentaborane in octene-1

Description: From Summary: "The effects of variation in inlet-air temperature, combustion pressure, and boron or pentaborane concentration on combustion performance were discussed. It was shown how the theoretical data herein could be employed in obtaining the combustion efficiency of experimental combustors. Data were presented by which combustion efficiencies obtained with a water-quench heat balance could be adjusted for the heat of dissociation of the combustion products."
Date: June 1, 1955
Creator: Tower, Leonard K.
Item Type: Refine your search to only Report
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Antiproton Star Observed in Emulsion

Description: In connection with the antiproton investigation at the Bevatron we planned and carried out a photographic-emulsion exposure in a magnetically selected beam of negative particles. The magnetic system was identical to the first half (one deflecting magnet and one magnetic lens) of the system used in the antiproton experiment of Chamberlain, Segre, Wiegand, and Ypsilantis. The selected particles left the copper target in the forward direction with momentum 1.09 Bev/c.
Date: December 1, 1955
Creator: Chamberlain, Owen; Chupp, Warren W.; Goldhaber, Gerson; Segre,Emilio; Wiegand, Clyde; Amaldi, E. et al.
Item Type: Refine your search to only Report
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Arc Research. Some Considerations on the Application of the A-48 to the Sherwood Program

Description: An outline is presented of an omnitron source scheme in which the sheath voltage is not carried over into the reactor region. The lines of force defining the region of greatest potential drop are bent so that they return to the center electrode, rather than extending to the reactor chamber. The sheath electrons follow the bent lines of force, and the ions follow the main magnetic field pattern outside the sheath. With such a design it is possible in principle to transfer ions from the omnitron … more
Date: November 1, 1955
Creator: Hiskes, J.R.
Item Type: Refine your search to only Report
open access

Attenuation properties of Hanford pile shield materials

Description: This report discusses an extended program of measurements has been carried out at Hanford to determine the attenuation characteristics of various concretes which might be used as inexpensive yet efficient shields for large, stationary, production piles. The original Hanford piles have biological
Date: September 1, 1955
Creator: Bunch, W. L. & Tomlinson, R. L.
Item Type: Refine your search to only Report
open access

THE BEHAVIOR OF URANIUM, THORIUM, AND OTHER SELECTED MATERIALS IN BROMINE TRIFLUORIDE, BROMINE PENTAFLUORIDE, CHLORINE TRIFLUORIDE, AND FLUORINE AT ELEVATED TEMPERATURES

Description: The reactivity of uranium, thorium, aluminum, copper, iron, magnesium, zirconium, and Fluorothene with bromine trifluoride, bromine pentafluoride, chlorine trifluoride, and fluorine was investigated at tempertures ranging from 25 to 410 deg C. The reactivity of platinum with bromine trifluoride was also studied. (auth)
Date: May 1, 1955
Creator: Stein, L. & Vogel, R.C.
Item Type: Refine your search to only Report
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