Search Results

open access

Gamma Activities in Irradiated Beryllium Oxide

Description: The major long lived activity induced in irradiated Pechiney and Brush BeO specimens is due to Se-46 arising from scandium present to the extent of about 1 p.p.m. The Brush specimens showed additional activities due to Fe-59 and Co-60 and to Cr-51. The levels of Cr-51 found are considerably higher than would be expected on the basis of stated chromium impurity levels suggesting that the chromium is introduced during handling of the samples on site. Approximate values of the dose rate are includ… more
Date: March 1963
Creator: Green, R. M.
Partner: UNT Libraries Government Documents Department
open access

The Spectrophotometric Determination of Beryllium with Chrome Azurol S

Description: A comprehensive investigation of the spectrophotometric determination of beryllium with Chrome Azurol S is described. At pH 4.6, and in the presence of EDTA, only Cr-3+ and F1- ions interfere seriously. A molar absorptivity of 4060 at 569 mu has been found for the complex, with a standard deviation of plus or minus 0.4 per cent at the 25 omega g beryllium level. Chrome Azurol S has several advantages over Berillon II, which is widely used for the spectrophotometric determination of beryllium.
Date: January 1963
Creator: Pakalns, P.
Partner: UNT Libraries Government Documents Department
open access

The Irradiation Behaviour of Hot-Pressed Dispersions of (U, Th)Be13 in Beryllium :Second Irradiation Experiment

Description: Fuel specimens having uranium—thorium beryllides as the fissile bearing phase were irradiated at 400 to 700 ºC to burn—ups between 7 and 11a/0 uranium in a predominantly thermal flux, two specimens of massive (U;Th)Be13 exhibited good dimensional stability and low fission gas release. Dispersion specimens containing 20, 35, and 50v/o (U,Th)Be13 swelled by 3 to 18 per cent, and released up to 33 per cent, of the gaseous fission products. The results indicate that the mixed beryllide is an inhere… more
Date: November 1963
Creator: Hanna, G. L.; ickman, B. S. (Brian Stuart) & Hilditch, R. J.
Partner: UNT Libraries Government Documents Department
open access

Irradiation of Beryllium at Elevated Temperatures. Part II. Irradiation of Rig X-74 in HIFAR

Description: Beryllium metal specimens fabricated by various routes were examined after irradiation to fast neutron doses of 5.5 x 1020 to 9 x 1020 nvt at temperatures of 450, 550, and 650ºC. The results were in general agreement with those reported previously for similar material irradiated to lower doses. Density changes of any significance were observed only at 650ºC. Serious loss of high temperature ductility occurred in all materials and was again attributed to helium bubble formation at grain boundari… more
Date: December 1963
Creator: Hickman, B. S. (Brian Stuart) & Bannister, G.
Partner: UNT Libraries Government Documents Department
open access

Automatic Scaler A.A.E.C. Type 2A -- Service Manual

Description: This manual is intended to give operating and maintenance information for the range of counting equipment in use by the A.A.E.C. at Lucas Heights, designation of Scaler Type 2A. This equipment has been designed in the General Physics Section of the A.A.E.C. General Nucleonics Division. The equipment was built by an Australian manufacturer (Siemens Nucleonics).
Date: July 1963
Creator: Fraser, H. J. & Waldron, C.
Partner: UNT Libraries Government Documents Department
open access

A Basis for the Computation of the Energy Dependence of the Neutron Flux and Slowing Down Density in a Bare Reactor

Description: A method is described for the computation of the energy dependence of the neutron flux and slowing down density in a bare reactor to form the basis of a 7090 Fortran computer program for survey studies of power reactors. Allowance is made for resonance absorption and resonance fission, neutron thermalisation, fast neutron reactions including (n, 2n) and (n, n), and anisotropic elastic scattering.
Date: September 1963
Creator: Lawrence, B. R.
Partner: UNT Libraries Government Documents Department
open access

MULGA : a Complex of Codes for the Determination of Multigroup Averaged Neutron Cross Section Data

Description: A complex of computer programmes called MULGA is described which will produce multigroup cross sections in a format suitable for input into a selection of reactor codes. Always bearing in mind that the spatial variation of flux will frustrate any determination of "exact" cross sections the maximum accuracy has been striven for within the limitations of urgency and feasibility. The programmes; together with an associated microscopic data library tape, and a specialised monitor system, have been … more
Date: December 1963
Creator: Clancy, B. E.; Doherty, G.; Keane, A.; Kletzmayr, E. & Pollard, J. P.
Partner: UNT Libraries Government Documents Department
open access

Historical Documentation of Major Coal-Mine Disasters in the United States not Classified as Explosions of Gas or Dust: 1846-1962

Description: From Summary: "This publication lists and provides brief accounts of the major disasters not classified as explosions of gas or dust that have occurred in the coal mines of the United States from the earliest times to the present."
Date: 1963
Creator: Keenan, Charles M.
Partner: UNT Libraries Government Documents Department
open access

Helium-Bearing Natural Gases of the United States: Analyses, Second Supplement to Bulletin 486

Description: Supplementary report from the U.S. Bureau of Mines regarding the results of a survey of the natural gas (helium) resources available in the United States. From the summary: "Results of analyses by the Bureau of Mines of 1,444 samples from oil and gas wells and natural gas pipelines collected from 23 states are presented in the Bulletin in tabular form. The information is from samples collected in the period May 1956 to January 1961 and supplements earlier publications" (p. 1). The summary al… more
Date: 1963
Creator: Munnerlyn, R. D. & Miller, R. D.
Partner: UNT Libraries Government Documents Department
open access

Thermodynamic Properties of 65 Elements: Their Oxides, Halides, Carbides and Nitrides

Description: From Introduction: "This Bureau of Mines bulletin was prepared to compile in readily usable form the heat content, heat-of-formation, and free-energy-of-formation data for 65 common elements and their respective oxides, halides, carbides, and nitrides. The bulletin was prepared to encourage the application of thermodynamics in the metallurgical field; consequently, the values have been presented in a simple, readily usable form and several examples of their applications have been shown."
Date: 1963
Creator: Wicks, C. E. & Block, F. E.
Partner: UNT Libraries Government Documents Department
open access

West Virginia Oilfields Discovered Before 1940

Description: From Summary: "This report contains data on 79 oilfields discovered before 1940. The boundary of each field and extent of the individual producing formations are presented. Oil production to January 1, 1960, and an estimate of total oil remaining are also listed. Secondary-recovery methods used in each field since discovery and degree of success are reported."
Date: 1963
Creator: Whieldon, Charles E., Jr. & Eckard, William E.
Partner: UNT Libraries Government Documents Department
open access

Determination of Phenols in Coal Tars and Hydroxyl Groups in Coal by Forming Trimethylsilyl Ethers

Description: From Introduction: "This report reviews related previous work and describes studies by the Bureau of Mines on (1) the development of new methods for analyzing phenols, (2) the development of a specific method for the determination of phenolic hydoxyl groups in coal, and (3) the preparation and properties of trimethylsiyl derivatives of individual phenols."
Date: 1963
Creator: Friedman, Sidney; Zahn, Charles; Kaufman, Marvin & Wender, Irving
Partner: UNT Libraries Government Documents Department
open access

X-Ray Powder Diffraction Patterns of Solid Hydrocarbons, Derivatives of Hydrocarbons, Phenols, and Organic Bases

Description: From Abstract: "The Bureau of Mines has developed a library of 178 X-ray powder diffraction patterns of aromatic hydrocarbons, 2,4,7-trinitro-9-fluorence derivatives of aromatic hydrocarbons phenols, and organic bases for positive identification of solid organic compounds of special interest to the chemistry of coal, air pollution, and related fields.This bulletin contains convenient indices designed to permit maximum use of this library."
Date: 1963
Creator: Hofer, L. J. E.; Peebles, W. C. & Bean, E. H.
Partner: UNT Libraries Government Documents Department
open access

Colloidal Radioalbumin Aggregates for Organ Scanning : presented at 10th Annual Meeting, Nuclear Medicine Society, Montreal, Canada, June 26-29, 1963

Description: Abstract: The exhibit shows that colloidal aggregates (10 to 20 mu) of human serum albumin I131 may be used safely by intravenous injection to perform photoscans of the heart, liver, spleen, stomach, and salivary glands in man. Large particle size suspensions (10 to 50 mu) of the same material are being investigated experimentally in animals for scanning the lungs after intravenous injection and the brain following injection into an internal carotid artery. The advantages of this test material… more
Date: June 26, 1963
Creator: Taplin, George V.; Dore, Earl K.; Johnson, DeLores E. & Kaplan, Harriet.
Partner: UNT Libraries Government Documents Department
open access

Studies in Contact Microradiography : Presented at the American Society for Testing Materials, 66th Annual Meeting, Atlantic City, New Jersey, June 23-28, 1963.

Description: Abstract: Recent developments in techniques for low-voltage radiography have found application for the examination and evaluation of minute details in small or thin specimens. Utilization of x-ray tubes and helium chambers with thin windows for maximum transmission of soft x rays and bare film with dark-room exposure techniques have allowed very high contrast radiographs to be produced on low-contrast materials. These conditions, coupled with very high resolution photographic emulsion detectors… more
Date: 1963
Creator: McClung, R. W.
Partner: UNT Libraries Government Documents Department
open access

The Effect of Ionizing Radiation on the Optical and Electrical Properties of the Alkali Halides : Presented at the American Society for Testing Materials, 66th Annual Meeting, Atlantic City, New Jersey, June 23-28, 1963.

Description: Abstract: Various mechanisms for the formation of point defects in ionic crystals are considered. Their probable importance as a function of the energy of the ionizing radiation and the temperature at which the irradiation takes place is discussed. Complex centers formed from aggregates of simple point defects are reviewed and their occurrence considered in terms of the expected spatial distribution of the point defects. The effect of high energy x rays and protons on the ionic conductivity is … more
Date: 1963
Creator: Royce, B. S. H. (Barrie S. H.)
Partner: UNT Libraries Government Documents Department
open access

Man-made Ionized Columns in the Atmosphere - a New Tool for Meteorological Research

Description: Abstract: The use of a high energy proton or electron beam, directed vertically to act as a probe for the study of atmospheric processes is proposed. An outstanding feature of such an atmospheric probe is its capability to ionize a column of air repeatedly in a few microseconds and in approximately the same place. Characteristics of a vertical proton beam which may be generated by the Zero Gradient Synchrotron at the Argonne National Laboratory are discussed and calculations are presented to p… more
Date: August 1963
Creator: Moses, Harry, 1916-2004; Martin, Ronald L.; Kastner, Jacob, 1919- & Ulrich, Aaron J.
Partner: UNT Libraries Government Documents Department
open access

Experimental Studies on the Current Carrying Capacity of NbZr Wires Under Conditions of Fixed and Swept Magnetic Field

Description: Abstract: The current-carrying capacity of Nb- Zr wire has been studied under conditions of swept magnetic field and fixed wire current and of fixed magnetic field and swept wire current. The effects of wire movement, thermal environment, copper coating of the wire, and rate of sweep of wire current or magnetic field have been determined for these conditions of test.
Date: January 1, 1963
Creator: Laverick, Charles.
Partner: UNT Libraries Government Documents Department
open access

Ion Exchange Absorption of Cesium by Potassium Hexacyanocobalt(II) Ferrate(II)

Description: Abstract: A description is given of the preparation and properties of a granular form of potassium hexacyanocobalt (II) ferrate (II) that is a highly selective absorbent for cesium ion. The material is suitable for use in a large-scale ion exchange column, and offers the possibility of isolating and concentrating Cs137 from fission product waste solutions that arise from the processing of nuclear fuels.
Date: October 23, 1963
Creator: Prout, William E., 1921-; Russell, E. R. & Groh, H. J.
Partner: UNT Libraries Government Documents Department
open access

Scattering of a Velocity Selected Potassium Beam by Neon, Argon, and Xenon Gases at Different Temperatures

Description: Abstract: A thermal K beam was velocity selected, and scattered by Ne, Ar, and Xe gases. The dependence of the total cross section on relative velocity is approximately v/sup -0.4/ for K--Ar and K--Xe, and v/sup 0.8/ for K--Ne. The average relative velocity ranges were 400 to 1430 m/sec for Ne, 480 to 1350 m/sec for Ar, and 380 to 1320 m/sec for Xe. The dependence of the cross section on relative velocity was obtained by removing the cross section from the collision frequency integral. For the … more
Date: 1963
Creator: Brown, Howard H., Jr.; Lulla, Kotu. & Bederson, Benjamin.
Partner: UNT Libraries Government Documents Department
open access

Elastic Scattering of Atoms and Molecules in the Thermal Energy Range

Description: Abstract: the goal of research on elastic scattering of atomic (or molecular) beams is the elucidation of the interaction potential V(r). the present discussion is confined to thermal energy collisions ([less than]1 ev), sensitive primarily to the attractive part of the potential. Studies of the velocity dependence of the differential and total elastic scattering cross sections have yielded information as follows: (1) The functional form of the long-range attraction : V[tilde]-C/r6, from differ… more
Date: 1963
Creator: Bernstein, Richard B. (Richard Barry), 1923-1990
Partner: UNT Libraries Government Documents Department
Back to Top of Screen