36 Matching Results

Search Results

Results: 1 - 24 next
open access

ELECTRICAL PROPERTIES OF ORGANIC SOLIDS. I. KINETICS AND MECHANISMOF CONDUCTIVITY OF METAL-FREE PHTHALOCYANINE

Description: Techniques involving the use of high-intensity short-duration light pulses have been applied t o the study of the kinetics of photoconductivity in films of metal-free phthalocyanine. These experiments, in conjunction with measurements of steady-state photoconductivity, are consistent with the following scheme. The principal route for the formation of charge carriers is via the first excited singlet state, although the lowest triplet state can, t o some extent, contribute to charge - carrier pro… more
Date: July 29, 1959
Creator: Tollin, Gordon; Kearns, David R. & Calvin, Melvin.
Partner: UNT Libraries Government Documents Department
open access

ELECTRICAL PROPERTIES OF ORGANIC SOLIDS. II: EFFECTS OF ADDEDELECTRON ACCEPTOR ON METAL-FREE PHTHALOCYANINE

Description: The addition of ortho-chloranil to the surface of films of metal-free phthalocyanine has been found (a) to increase the dark conductivity of such films by as much as 10{sup 7}, (b) to increase the steady-state photoconductivity by as much as 10{sup 5}, and (c) to result in the formation of unpaired electrons whose concentration decreases reversibly as a result of illumination. These systems exhibit a light-induced polarization, the phthalocyanine layer becoming more positive with respect t o th… more
Date: July 29, 1959
Creator: Kearns, David R.; Tollin, Gordon & Calvin, Melvin
Partner: UNT Libraries Government Documents Department
open access

Production Test IP-247-A-8-FP, irradiation of 1.47% enriched self-supported I&E fuel elements in ribless process tubes

Description: The objective of the test detailed in this report is to irradiate self-supported fuel elements under conditions of severity comparable in these expected for future loadings of this geometry, to attempt to determine the resistance to corrosion of cooled cladding, the effect of supports on cladding corrosion and coolant flow patterns, and the relative resistance to ``hot-spot`` type attack and rupture of ``projection`` fuel elements and rib supported elements. This test will authorize irradiation… more
Date: July 29, 1959
Creator: Hall, R. E.
Partner: UNT Libraries Government Documents Department
open access

Plant Expansion Task Force technical feasibility and R&D efforts

Description: The Expansion Study Task Force has evaluated several cases of Hanford reactor operation at power levels considerably higher than is presently obtained in the six older reactors. These higher power levels result in more rigorous operating conditions of temperature, heat flux, neutron flux, hydraulics, reactor control, etc. The purpose of this document, the various components of which were prepared by Process and Reactor Development Sub-Section personnel, is to assess the technical feasibility of… more
Date: December 29, 1959
Creator: Gilbert, W. D.
Partner: UNT Libraries Government Documents Department
open access

Design of Production Test IP-262-A-11-FP -- Evaluation of projection fuel elements for use in ribbed process tubes -- Demonstration loading

Description: For several years, a major category of fuel element failures has been the side corrosion type, characterized by localized accelerated fuel element jacket corrosion. Since it has been demonstrated {sup 1} that misalignment of fuel elements in a process tube will produce flow patterns and accelerated corrosion, termed ``hot spots``, failure to align the fuel elements in process tubes is considered a contributing factor in the production of side corrosion failures. Preliminary testing of both self… more
Date: June 29, 1959
Creator: Hodgson, W. H. & Hall, R. E.
Partner: UNT Libraries Government Documents Department
open access

Topical Material Prepared for Agenda: E. J. Block Meeting

Description: The material covered are R and D, 2000 reactor and metallurgy program (production reactors, N-Reactor). Topics covered include operating schedules and production, fuel, engineering, safety, control, physics, etc.
Date: June 29, 1959
Creator: Nilson, R.
Partner: UNT Libraries Government Documents Department
open access

Current Beryllium Literature : A Selected Bibliography, January 1958 - August 1959

Description: "This bibliography lists selected articles on beryllium which have appeared in journals received in the library of the Lawrence Radiation Laboratory, Livermore, California and articles, reports, and books which have appeared in the following abstracting services between January, 1958 and August 1959."
Date: September 29, 1959
Creator: Lane, Zanier D.
Partner: UNT Libraries Government Documents Department
open access

Filling Instructions for the Pratt & Whitney Forced Convection Liquid Metal Inpile Loop Experiment (PW19)

Description: The apparatus and procedures that are to be used to fill the liquid metal system of the Pratt and Whitney Forced Convection Liquid Metal Inpile Loop are described. The liquid metal to be used is a mixture containing 56% Na and 44% K, which is a liquid at room temperature. In order to simplify the filling procedure at the reactor site, two containers, each of which contains exactly enough liquid metal to fill the experiment to the prescribed level, a fill dolly incorporating a purified helium sy… more
Date: April 29, 1959
Creator: Heyl, P. T.
Partner: UNT Libraries Government Documents Department
open access

ELECTRON MICROSCOPICAL EXAMINATION OF BONDS IN ZIRCALOY-2

Description: Electron microscopy was used to supplement metallographic studies of bonds between Zircaloy-2 interfaces. Treated surfaces before bonding, and bonded sections made by a variety of techniques were examined. Electron micrographs of belt-abraded surfaces exhibited a consistent fine-scale roughness. Chemically pickled surfaces were nearly smooth regardless of prior treatment. Chemically pickled samples and a zirconium oxide-coated sample pressure bonded at 1500 F and 10,000 psi had pitting at bond … more
Date: July 29, 1959
Creator: Young, A.P. & Schwartz, C.M.
Partner: UNT Libraries Government Documents Department
open access

Neutron-Flux Measurements in a Concentric-Cylinder Fuel Element

Description: The following report presents neutron-flux measurements made with a concentric-cylinder element (Mark II) and includes axial, radial, and peripheral flux distributions.
Date: January 29, 1959
Creator: Anno, James N.; Fairand, Barry P. & Chastain, Joel W., Jr.
Partner: UNT Libraries Government Documents Department
open access

Time Dependence of the Beam in the 86-Inch Cyclotron

Description: In the preliminary stages of getting up a time-of-flight system for measuring neutron spectra from proton reactions, a study of the time dependence of the beam in the 86Inch Cyclotron was made. This study revealed the expected bunching of the protons to produce a short burst of beam on each cycle of the 13.4 Mc/s accelerating voltage. In addition to the 13.4 Mc/s structure, however, there was a 360 c/sec modulation of the beam pulses and a complicated pattern built upon that.
Date: July 29, 1959
Creator: Goodman, C. D.
Partner: UNT Libraries Government Documents Department
open access

Uranium Anion Exchange Equilibria on Dowex 21K

Description: Equilibrium loading of uranium on Dowex 21K was studied in a sulfate system for uranium concentrations from 0.0005 to 0.005M, total sulfate concentrations of 0.045 to 0.6M, and sulfuric acid concentration of 0.020M. Loading data were fitted to Langmuir adsorption isotherms and Langmuir constants were evaluated. Resin was equilibrated with uranium feed solutions by flowing the feed through a shallow fixed bed of resin. (auth)
Date: June 29, 1959
Creator: Dunn, W. E.
Partner: UNT Libraries Government Documents Department
open access

Time Dependence of the Beam in the 86-Inch Cyclotron

Description: The study revealed the bunching of protons to produce a short beam burst on each cycle of the l3.4 Mc/sec accelerating voltage. In addition to the l3.4 Mc/sec structure, there was a 360 cps beam pulse modulation. Oscilloscope patterns are given which show: (l) the envelope of the r-f accelerating voltage; (2) 60 cps line voltage with time scale; (3) beam intensity; and (4) beam intensity at faster oscilloscope sweep. Apparently the beam intensity is critically dependent on the accelerating volt… more
Date: July 29, 1959
Creator: Goodman, C. D.
Partner: UNT Libraries Government Documents Department
open access

HEAT AND MASS TRANSFER ANALYSIS OF PROPOSED EXPERIMENTAL COLD TRAP SYSTEM

Description: Studies were made to investigate the possibility of removing oxide impurities from Na-cooled reactor systems by cold trapping in conjunction with fill-drain tanks. (W.L.H.)
Date: October 29, 1959
Creator: McDonald, J.S. & Perez, F.
Partner: UNT Libraries Government Documents Department
open access

TRANSURANIC STUDIES STATUS AND PROBLEM STATEMENT

Description: The purpose of the Transuranics Program is to develop separation processes for the transuranic elements, primarily those produced by long-term neutron irradiation of Pu/sup 239/. The program includes laboratory process development, pilot-plant process testing, processing of 10 kg of Pu/sup 239/ irradiated to greater than 99% burn-up for plutonium and americium-curium recovery, and processing the reirradiated plutonium and americium-curium fractions. The proposed method for processing highly irr… more
Date: April 29, 1959
Creator: Leuze, R E
Partner: UNT Libraries Government Documents Department
open access

Prototype Freeze Trap Test

Description: A performance evaluation was made of a prototype liquid cooled freeze trap with sodium at 350 and 1000 deg F. The sodium freeze-off function was adequate for all test conditions encountered. The freeze-off occurred satisfactorily with the larger clearance provided by a test modification to provide 0.030 eccentricity to the rotating shaft. Turning the freeze-trap handle was successful in opening the unit for gas venting when 350 deg F sodium was used. For a seal formed with 1000 deg F sodium, 16… more
Date: December 29, 1959
Creator: Cygan, R.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen