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Atomic Energy Commission Reports
649
BNL (Series)
360
Brookhaven National Laboratory Reports
360
University of California Radiation Laboratory Reports
214
General Electric Company Atomic Power Reports
183
GEAP (Series)
175
Ames Laboratory, Iowa State University (IS)
128
NYO (Series) (New York)
125
UCRL (Series)
119
Oak Ridge National Laboratory Reports
113
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A Computer Program to Optimize Magnets in a Beam Transport System*
A computer program which optimizes the locations and strengths of magnets in a beam transport system has been written for the IBM 704 and 7090 computers Programs have been previously written which trace a ray through a system of magnets and determine its focusing properties When using such a program, one examines the characteristics of the emergent beam and then varies the parameters of the system manually to optimize it In the program which will now be described, the computer itself performs the examination and varies the parameters.
Date:
[..1962]
Creator:
Baker, W. F.
System:
The UNT Digital Library
Effects of Insulin of Hepatic Glucose Metabolism and Glucose Utilization by Tissues
The mechanism whereby insulin lowers the blood glucose concentration is currently under extensive investigation. Despite the general agreement that the addition of insulin increases glucose uptake by various isolated tissues, the question has been raised whether administered insulin produces its blood sugar lowering effect in vivo primarily in increasing glucose uptake. Furthermore, it has been suggested that physiologically-released insulin may not exert the same effects as are produced by administered insulin. Attention has also been focused on whether insulin (exogenous or endogenous) exerts its action mainly or entirely on the liver and to what extent insulin influences glucose uptake and glucose production by the liver. The studies to be reported are a continuation of earlier work and are concerned with the effects of insulin, both exogenous and endogenous, on glucose utilization by the tissues and glucose production by the liver under various dietary condition in the unanethetized, intact dog, using C¹⁴ glucose.
Date:
[..1961]
Creator:
de Bodo, R. C.; Steele, R.; Altszuler, N.; Dunn, A. & Bishop, J. S.
System:
The UNT Digital Library
Table of Proton-Proton Scattering Phase Shift as Calculated from the One-Pion Exchange Contribution
The phase shifts for proton-proton scattering as calculated from the one-pion exchange contribution (OPEC) alone are of some interest because they describe the scattering correctly in the high angular momentum states, and because in the lower angular momentum states the deviation from the OPEC phases is an indication of the strength of the two-pion and higher exchanges processes. The attached table gives the proton-proton nuclear-bar phase shifts as calculated from OPEC. Phase shifts and mixing parameters are given in degrees, as function of the T, the laboratory kinetic energy of the incoming protons in Mev. Phase shift and mixing parameters are listed in the angular momentum states.
Date:
April 5, 1969
Creator:
Johnston, Bradley M. & Moravcsik, Michael J.
System:
The UNT Digital Library
The Escape of Fission Products From an Uranium Rod; Application to the B. N. L. Reactor
Technical report covering the functions of the Oak Ridge reactor, difficulties encountered with cartridge failures in the Oak Ridge reactor, and possible solutions including the incorporation of leak detection systems into the design of the reactor.
Date:
November 3, 1968
Creator:
Chernick, J. & Kaplan, I.
System:
The UNT Digital Library
Cosmic Ray Produced Ar37 and Ar39 Activities in Recently Fallen Meteorites
Several methods of determining meteorite ages depend ages upon nuclides formed by cosmic ray interactions. The tactic assumption is always made that the intensity of cosmic radiation does not vary in time or space. However it is known that the intensity of cosmic radiation at the earth varies with the solar activity. The spectrum of cosmic ray protons and alpha particles exhibit a marked drop at the low energy end (<1.5 GeV) and the intensity in the region appears to follow the 11 year cycle of solar activity. The low energy cosmic rays increase in intensity with a decrease in solar activity. These changes in cosmic ray intensities are generally attributed to a modulation of the galactic cosmic radiation by the magnetic fields associated with the outward streaming solar material, the solar wind. One would therefore expect that the cosmic ray intensity several astronomical units from the sun is greater than the intensity at the earth's orbit, particularly at the low energy end of the spectrums.
Date:
February 1, 1968
Creator:
Davis, R. Jr.; Stoenner, R. W. & Schaeffer, O. A.
System:
The UNT Digital Library
The Mg-MgCl2 System — A Chronopotentiometric Study
The mode of dissolution of magnesium in molten magnesium chloride contacted with Mg-Pb alloys was studied at 750°C using anodic chronopotentiometry. An inert tantalum anode was used to determine relative amounts of magnesium dissolved in its chloride as a function of magnesium activity in the alloy. According to the law of mass action a linear dependence of magnesium solubility on a Mg indicates Mg2Cl2 as the reaction product and a parabolic dependence indicates MgCl. It was found that the amount of magnesium dissolved in its chloride was directly proportional to the magnesium activity in the metal phase, i.e., a linear dependence, indicating Mg2Cl2 as the subhalide species. Due to the corrosive nature of the Mg-MgCl2 system a special apparatus was used so that only the inert metals tantalum and molybdenum came in contact with the melt. Purification procedures and conditions for proper equilibration and measurement were established and are reported. The basic equation of chronopotentiometry, [equation not transcribed], was found to hold and at given magnesium activities the product [unintelligible] did not vary with the current, indicating the validity of the analytical technique.
Date:
February 1, 1968
Creator:
Van Norman, John D. & Egan, James J.
System:
The UNT Digital Library
The Status of Meteorological Knowledge as a Factor in Air Pollution Control
The first national Technical Conference on Air Pollution (1) held in this city in 1950 included eight papers on meteorology; the present session contains one. On this basis, one night conclude that recent progress in meteorology has been virtually nonexistent or that the importance of meteorological factors has been diminishing, Neither could be further from the truth, as the number and quality of papers relating to air pollution meteorology in recent scientific and technical sessions will attest. It is particularly appropriate to review the status of meteorological "know-how" at this time, because of the many situations in which the ultimate capability of the atmosphere to absorb pollution is in question. Both in connection with highly toxic materials on the one hand and the "megalopolis" on the other, estimates of the "atmospheric sewer capacity" are becoming increasingly necessary to industrial and municipal planning.
Date:
1968
Creator:
Smith, Maynard E.
System:
The UNT Digital Library
Metallurgy Division Quarterly Report [for] October, November, and December 1955
A total of nine clad plates, containing uranium -5 w/o zirconium 1.5 w/o niobium alloy cores and clad with Zircaloy-II, were rolled in plain carbon steel jackets, heat treated, physically evaluated, and corrosion tested. All these plates were found to be within predetermined dimensional tolerance in width, thickness, length, cladding thickness, and core distribution. Improved control of wielding variables and of the length of the seal pin projecting above the end plugs resulted in the elimination of frequently observed segmented inclusions at the seal pin interfaces.
Date:
June 1965
Creator:
Foote, Frank G.; Schumar, James F. & Chiswik, Haim H.
System:
The UNT Digital Library
Mass Yields From Fission by Neutrons Between Thermal and 14.7 Mev
Radiochemically determined mass-yield curves are given for the fission of U235 and U236 by 14.7-Mev neutrons.
Date:
February 1965
Creator:
Ford, George P. & Gilmore, James S.
System:
The UNT Digital Library
The Education, Experience, Training, and Certification of Reactor Operators at AEC-Owned Reactors
Results of a questionnaire survey are presented on reactor supervisor and operator education, experience, and training, and on certification procedures by reactor category. The questionnaires were obtained from 362 supervisors, 393 operators, 44 supervisor trainees, and 139 operator trainees.
Date:
October 31, 1964
Creator:
Wilgus, Walter S.; McCool, Whittie J. & Biles, Martin B.
System:
The UNT Digital Library
Analysis of the Combustion of Graphite-Uranium Fuels in a Fixed Bed or Moving Bed
The first step in a proposed processing method for recovery of uranium from graphite-uranium fuels consists of oxidation of the fuel by oxygen to volatilize the carbon. Residue ash from the combustion step can be treated in a variety of ways to recover and purify the uranium. The combustion step may be caried out by contacting the solid fuel in a fixed or moving bed with a stream of oxygen-bearing gas in a tubular or annular reactor. Oxidizing gas may be introduced to the reactor at several points up the reactor and there may be continuous or intermittent addition of fresh fuel and removal of residue ash.
Date:
August 13, 1964
Creator:
Scott, Charles D.
System:
The UNT Digital Library
Graduate Programs for the Health Physicist in the United States
The first man-made nuclear reactor -- or "pile" as it was then called -- was rather hurriedly improvised and operated in a crowded space under the athletic bleachers of Stagg Field at the University of Chicago on December 2, 1942. Just prior to this time, there began the assembly of a group of physicists with an unusual assignment. They were determined that radiation hazards of unprecedented proportions must be coped with successfully in the conduct of reactor programs as planned. Since these physicists were to be concerned with the health of radiation workers, they were called health physicists. There was no formal instruction available to this first group of health physicists and they perforce received training as they felt their way by firsthand experience and by trial and error. Health physics at Oak Ridge National Laboratory from the very beginning has been organized into three principal areas: applied activities, education and training and research.
Date:
August 13, 1964
Creator:
Morgan, K. Z. (Karl Ziegler), 1908-
System:
The UNT Digital Library
Comparison of the Thermal Conductivity, Electrical Resistivity, and Seebeck Coefficient of a Hight-Purity Iron and Armco Iron to 1000 [degrees] C
The thermophysical properties of Armco iron such as thermal conductivity, electrical resistivity, and Seebeck coefficient have been extensively investigated and reviewed up to 1000 degrees C. Few investigations of such properties have been made on high purity iron. If such a study is made using the same apparatus to determine the properties of two purity levels of iron, then several significant intercomparisons can be made which add meaning to data on a single material. The systemic errors for a single apparatus are the same, therefore comparison of a property of two similar materials is more significant. A comparison of the property changes with temperature and purity can show the effects of impurities on the mechanisms contributing to a property and allows prediction of the properties of iron as a function of purity. For these reasons a study was initiated on the high-purity iron for comparison to Armco iron.
Date:
August 11, 1964
Creator:
Moore, J. P.; Fulkerson, W. & McElroy, D. L.
System:
The UNT Digital Library
A Thermal Comparator Apparatus for Thermal Conductivity Measurements from 50 to 400 [degrees] C
The experimental details, mathematical models, and typical data for a rapid comparative method for thermal conductivity measurements are presented. The method consists of measuring the temperature change of a small silver sphere after it is brought in contact with a small disk-shaped specimen which was initially at ta higher temperature. This temperature change was calibrated in the range of 50 to 400 degrees C by making measurements on samples of know thermal conductivity. The accuracy of this technique was shown to be between than +-10% with a reproducibility of at least +-2.5%. Using known transport mechanisms for heat conduction in solids and the temperature dependency of the electrical conductivity, a means to judiciously extrapolate thermal conductivity data obtained between 50 and 400 degree C to high temperature is presented.
Date:
August 11, 1964
Creator:
Kollie, T. G.; McElroy, D. L.; Graves, R. S. & Fulkerson, W.
System:
The UNT Digital Library
Thermal Properties of Grade CGB Graphite
Grade CGB graphite is a nuclear graphite which is basically an extruded petroleum coke bonded with coal tar pitch. No carbon blacks are used and the low-permeation graphite is finished through a series of impregnations and heat treatments with a final heat treatment of all components to 2800 degrees C. A listing of the results obtained is given in Table 1. The results at 51 degrees C are considered questionable. There was a slight contamination of the 90% Pt 10% Rh-Pt thermocouples at 910 degrees C but it was not sufficient to doubt the validity of the 910 degrees C results. However, the results obtained at 1015 degrees C should be disregarded because of severe thermocouple instabilities. In addition, the electrical resistance of the core heater at 603 degrees C indicated the thermocouples had a -10 to -15 degree error which is sufficient justification to disregard the 605 degrees C data.
Date:
August 11, 1964
Creator:
Moore, J. P. & Godfrey, T. G.
System:
The UNT Digital Library
Deposition of Submicron-Size Particles in Ventilation Ducts
The purpose of this study was to investigate mathematically the concentration decrease due to particle deposition phenomena in highly concentrated monodispersed aerosols (mean particle size less than 1.0 mu) flowing through ventilation ducts. It was found that, from the standpoint of removal, the decrease in concentration due to deposition on duct walls was insignificant; but, when considering contamination on duct walls, the amount deposited, even though small when compared with the amount in the bulk stream, should not be overlooked.
Date:
August 1964
Creator:
Davis, L. P.
System:
The UNT Digital Library
Program for the Development of Plutonium Recycle for Use in Light Water Moderated Reactors Quarterly Progress Report: April 1 - June 30, 1964
A research program is being conducted to obtain experimental data in the irradiation of plutonium-enriched fuel to confirm a theoretical model for predicting isotopic composition and reactivity changes in plutonium-enriched, light-water-moderated reactors. Quarterly progress: Project fuel fins irradiated to 1860, 3000, and 5300 MWD/T have been successfully sampled in the Radioactive Materials Laboratory. The samples have been dissolved and aliquots delivered to Chemistry for Mass Spectrometry and burnup determination. The first Stanford Pool Irradiation indicated that there was some inconsistency in the thermal flux and the near thermal epithermal flux. The experiment was repeated, increasing the number of foil wheel positions from two to three. The data from the second measurement are being reduced. The EPITHERMOS code modification has been completed. Comparisons between the results computed by the code and experimental data show much improved agreement. The metallographic photomicrographs of a polished half-pellet from rod F, irradiated to 5000 MWD/T, show structure very similar to that shown by the pellet from rod S, irradiated to 1860 MWD/T.
Date:
July 15, 1964
Creator:
Robkin, M. A.
System:
The UNT Digital Library
Development Program for Increased Output in the Garigliano Nuclear Reactor. Quarterly Report No. 7
The United States and the European Atomic Energy Community (Euratom), on May 29, and June 18, 1958, signed an agreement which provides a basis for co-operation in programs for the advancement of the peaceful applications of atomic energy. The work described in this report represents the Joint U.S.-Euratom effort. The over-all development program is designed to obtain the test data and operating experience necessary to eventually realize a 50 percent increase in the output of the Garigliano Nuclear Power Station located at Sessa Aurunca (Campania, Italy). One task is in progress: Task I - Data Logging and Computer System. The work on the other tasks is being planned and initiated.
Date:
July 1, 1964
Creator:
Howard, C. L.
System:
The UNT Digital Library
Photochemistry of Nucleic Acids, and its Biological Implications
The series of papers that we are about to discuss is primarily concerned, not as the first part of the session title indicates, with photochemistry of nucleic acids, but, as the second part indicates, with the biological implications of the photochemistry. We know that ultraviolet acts on nucleic acids in cells, and we know a good deal about the photochemistry of this interaction in vitro. The question we ask here is, which test tube reactions are of importance to the survival of the cell?
Date:
July 1964
Creator:
Jagger, John, 1924-
System:
The UNT Digital Library
Recent Developments in DC Polarography
This paper summarized the work at ORNL in controlled-potential dc polarography since mid 1959 and states conclusion and viewpoints that have been reached in the course of this work. The following topics are discussed: (1) Potentiostatic Compensation for Polarographic Cell Resistance; (2) Time-Derivative DC Polarography; (3) Signal-to-Noise Ratio (S.N); (4) Resolution; and (5) DC Polarography in Non Aqueous Solvents and, Particularly, in Solvent Extracts.
Date:
July 1964
Creator:
Fisher, D. J.; Belew, W. L. & Kelley, M. T.
System:
The UNT Digital Library
A Simple Quasi Reference Electrode … Applications in Controlled-Potential Polarography and Voltammetry and in Chronopotentiometry
The quasi reference electrode ( Q.R.E. ) is a bright platinum wire or other inert conductor immersed directly in the solution; it may have a very small area. It is used instead of a true reference electrode but must be used with potentiostatic or other circuits that prevent the drawing of cell current through the Q.R. E. When used in appropriate situations, the results obtained by use of a Q.R.E. are like those obtained with a true reference electrode except for the lack of thermodynamic meaning of the Q.R.E. potential ; hence , this simple electrode is called a quasi reference electrode.
Date:
July 1964
Creator:
Fisher, D. J.; Belew, W. L. & Kelley, M. T.
System:
The UNT Digital Library
Some Applications of the Distorted Wave Approximation for Direct Nuclear Reactions
The subject which I will discuss is the distorted - waves theory of direct reactions and its application to the study of nuclei. I shall mainly be concerned with a study of the reaction theory, its range of validity, and its ability to give quantitative information about nuclear structure.
Date:
July 1964
Creator:
Bassel , R. H.
System:
The UNT Digital Library
Transition Boiling Heat Transfer Program; Sixth Quarterly Progress Report, April - June 1964
Summary: Transition boiling data was taken with an improved flow loop, to explore the influence of loop characteristics on rod temperature fluctuations the transition region was found to be much smaller than for comparable conditions with a different loop. Also the amplitude, and frequency of the temperature oscillations, were significantly less than before. These results indicate that loop characteristic and flow disturbance parameters play a prominent part in governing the transition temperature fluctuations. Additional two-rod transition boiling data are presented. The results include data taken at high wall temperature levels during a demonstration test at low steam qualities, and the effect of a change in rod spacing on heat transfer performance.
Date:
July 1, 1964
Creator:
Quinn, E. P.
System:
The UNT Digital Library
UO2 Pellet Thermal Conductivity From Irradiations With Central Melting
Abstract: Continued irradiation experience under the AEC - Euratom, UO2 High Performance Program provided five separate and distinct sets of data on UO2 thermal conductivity. Four of these results are expressed in terms of the value of the thermal conductivity. The first two of these measurements were applicable -- strictly -- to poly crystalline UO2. Recently, three additional sets of measurements have been obtained -- all pertinent to UO2 after the formation of large columnar grains. The extent of melting in the experiments on which the results are based ranges from slight, to greater than 70 percent of the fuel cross section. The conclusions from all of these thermal conductivity measurements considered together are: (1) The true value of the UO2 conductivity integral form 0 degrees C to melting (2805 - 15 degrees C) lies in the range from 90 to 96 W/cm. The most probable value is closer to 90 W/cm. To ensure no central melting and the associated clad swelling the maximum thermal performance level for solid pellet, UO2 fuel rods should not exceed 90 W/cm. (2) Any improvement in thermal conductivity due to the formation of large, columnar UO2 grains is small and not detectable within the …
Date:
July 1964
Creator:
Lyons, M. F.; Coplin, D. H.; Pashos, T. J. & Weidenbaum, B.
System:
The UNT Digital Library