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Reactivity Worth of Transverse Gaps
Technical report discussing a series a experiments on the reactivity worth of gaps has been performed in the KAPL Solid Homogeneous Assembly (SHA). One objective of the program is to provide data against which calculated models can be checked. An immediate goal is to develop a method by which large void regions can be adequately treated within the framework of diffusion theory. This would enable the nuclear engineer to perform standard design calculations on systems containing such voids. Another objective of the program is to provide data which will allow the shutdown margin of split bed assemblies to be more adequately estimated. for this latter purpose not only the reactivity work of gaps is required by also the rate of change of reactivity with distance as a function of gap size.
Date:
November 1963
Creator:
Weinstein, S. & Feiner, Frank
Object Type:
Report
System:
The UNT Digital Library
Recent Developments in the Physics and Safety of Large Fast Power Reactors
Technical report discussing three principal areas: (1) some recent cross section measurements and their effect on fast reactor calculations; (2) the question of Doppler and sodium void reactivity effects in large fast power reactors and the conflicts inherent in simultaneous optimization of performance, breeding, and safety characteristics; (3) the matter of hybrid fuel cycles.
Date:
November 1963
Creator:
Okrent, David
Object Type:
Report
System:
The UNT Digital Library
Sodium Separation From Biological Material
This study is part of a research into trace element physiology of fresh water snails. As an average, biological materials contain [approximately] o.0% (fresh weight) NaCl ; this means [approximately] 3540 mg Na/1 (in snails, 0.4% NaCl [approximately] ms/1). Under these conditions, the application of neutron activation plus gamma spectrum analysis for the study of most trace elements as a routine method, is difficult. We will narrow down the scope some more and consider only the interference between Na24 and Cu64.
Date:
November 1963
Creator:
Spronk, N.
Object Type:
Report
System:
The UNT Digital Library
Contaminant effects study : final report, January 5 to September 15, 1962
From abstract: "This report describes work done on ARF Project C 216 from January 5, 1962 to September 15, 1962. The objectives of the program include evolution of an analytical research program to evaluate effects of environment contributed contamination on precise devices"
Date:
November 14, 1962
Creator:
Lieberman, A.
Object Type:
Report
System:
The UNT Digital Library
A Talk on NMR Applied to Polymer Research Given at the Eastern Analytical Symposium - November 14, 1962
The nature and types of internal molecular and thermal motions that polymer chains and polymer segments undergo have a great bearing on the physical behavior of polymeric solids. A relatively new tool is now available that permits us to observe and study internal thermally-induced motions directly at the atomic or molecular level rather than from macroscopic observations. this tool is nuclear magnetic resonance spectroscopy. This talk discusses (1) the nature of nuclear magnetic resonance, (2) NMR line shapes and the influence of temperature, (3) NMR line widths and second moments as a function of temperature, and (4) lists six general conclusions.
Date:
November 14, 1962
Creator:
Sauer, John A.
Object Type:
Report
System:
The UNT Digital Library
Some Applications of the Chase Two-Dimensional Analyzer at Brookhaven National Laboratory
The Chase two-dimensional analyzer is a 64 channel by 64 channel analyzer with a magnetic drum memory and a buffered storage system. The memory capacity is 2 counts per channel. The maximum storage rate is limited by the drum speed and is about 800 counts per second for a featureless spectrum.
Date:
November 6, 1962
Creator:
Donovan, Paul F.
Object Type:
Report
System:
The UNT Digital Library
Acid-Base Reactions and Kinetics of the Halates in Fused Nitrates
From Abstract : "The mechanism of the reactions of the halates, bromate, chlorate, and iodate, with dichromate in fused alkali nitrates has been shown to involve a fast equilibrium followed by a slow rate determining strip to give oxygen and halogen gases as final products." Experiments outlined serve as insight into the structure of fused salts or fused electrolytes.
Date:
November 1962
Creator:
Schlegel, James Max & Duke, P. R.
Object Type:
Report
System:
The UNT Digital Library
The Aqueous Coordination Chemistry of Beryllium and its Relation to Fuel Processing - a Literature Survey
A survey of the aqueous coordination chemistry of beryllium is given. The possible use of coordination chemistry in the separation of beryllium from fission products is discussed, outlining methods for separation processes.
Date:
November 1962
Creator:
Aggett, J. (John)
Object Type:
Report
System:
The UNT Digital Library
Crystal Structure of Bis (Meta-Chlorobenzoyl) Methane
Technical report. From Abstract : "The determination of the crystal structure of bis(meta-chlorobenzoyl)-methane was undertaken by x-ray methods in an effort to clarify the ambiguous position of the hydrogen atom on the enolic form of β - diketones and hence in intramolecular hydrogen bonds."
Date:
November 1962
Creator:
Engebretson, Gordon Roy & Rundle, R. E.
Object Type:
Report
System:
The UNT Digital Library
The Effect of Gallium on Plutonium Assay
Several of the plutonium assay methods were reexamined as part of a continuing effort to make improvements in these frequently used analyses. This investigation included a study of the controlled-potential coulometric, amperometric, potentiometric, and photometric titration methods and their applications to assays of delta-stabilized and alpha plutonium metal.
Date:
November 1962
Creator:
Bergstresser, K. S. (Karl Samuel), 1909-2004 & Waterbury, Glenn R.
Object Type:
Report
System:
The UNT Digital Library
Neutron Temperature Measurement Using Lutecium
The isotopes of lutecium were used to measure the neutron temperatures in two collimated beans of neutrons emerging from HIFAR>
Date:
November 1962
Creator:
Boldeman, John W.; Nicholson, K. P. & Rose, A.
Object Type:
Report
System:
The UNT Digital Library
Neutron Dosimetry in and Around Human Phantoms By Use of Nuclear Track Emulsion
The power of nuclear track research emulsion as a fast neutron dosimeter is examined in the exposure of a human phantom to PuBe neutrons. Semiautomatic track scanning and high-speed data analysis obviate the major disadvantages of this dosimeter, and allow the following basic information to be obtained without a serious cost in time: the rulative proton recoil energy spectrum, the absolute differential proton track den sity spectrum, and the average proton recoil energy at various locations in the phantom. From this are calculated the total absorbed local tissue doze due is proton recoils, the local thermal neutron intensity, and that portion of the tissue doze due to thermal [formula] tracks.
Date:
November 30, 1961
Creator:
Akagi, Hiroaki & Lehman, Richard L.
Object Type:
Report
System:
The UNT Digital Library
Servo System for Magnetic Controlled Constant Intensity Flat Top Beam Spill-Out
A uniform intensity flat top spill-out cannot be obtained by manual control for two reasons: 1. The horizontal density of the internal beam of the Cosmotron is far from uniform. As a result, a manually controlled linear motion of the internal beam into a target will result in a non-uniform spill-out intensity. 2. Stability requirements of the Cosmotron magnet voltage are not easily met without feedback because of inherent component stability. The proposed servo system will sense the external beam intensity, and correct the magnet voltage to keep this intensity constant. This servo must operate through the transfer function of the main ignitron system and the flat top filter. Both of those transfer functions impose special problems.
Date:
November 21, 1961
Creator:
Cottingham, J. G.
Object Type:
Report
System:
The UNT Digital Library
Research Study on Neutron Interactions in Matter as Related to Image Formation
From abstract: "In this report we present data obtained with the optical simulation apparatus on image quality as a function of the parameters of neutron scattering and image detector resolution...Also included in this report is a brief description of a large area (5 inch diameter) neutron beam exposure facility being set up at the reactor for the phase three work."
Date:
November 17, 1961
Creator:
Watts, H. V. & Terrell, C. W.
Object Type:
Report
System:
The UNT Digital Library
Alpha Particle Radiolysis of Anion Exchange Resins
Technical report. From Abstract : "Irradiation of 'Dowex' 1, 'Permutit' S-1, and 'Permutit' SK anion exchange resins with alpha particles results in losses in ion exchange capacity and in 'apparent per cent crosslinkage'. The order of decreasing radiolytic stability for these properties in 'Permutit" SX > 'Permutit' S-1 > 'Dowex' 1."
Date:
November 1961
Creator:
Ahrens, Rolland W.
Object Type:
Report
System:
The UNT Digital Library
Analysis of Mixtures of Alcohols by Acylation
From abstract: "Recently a general chemical method for the analysis of mixtures of alcohols appeared, using pyridine catalyzed acetylation and second order kinetics to determine the amount of the faster reacting component. The use of 0.25M isobutyric anhydride in pyridine containing 0.0025M perchloric acid as catalyst promotes the rate of the reaction and diminishes the time necessary to perform an analysis. A mathematical treatment of the data and kinetic plot reduces the number of kinetic points to only four or five. The mixtures are primarily composed of isomers."
Date:
November 1961
Creator:
Fellows, William Dean & Fritz, James S. (James Sherwood), 1924-
Object Type:
Report
System:
The UNT Digital Library
A Comparative Study of Two Grades of BeO
Pechiney and Brush UOX BeO differ markedly in fabrication behaviour, only Brush UOX being readily sinterable. A comparative study of the two powders has shown few outstanding differences in powder properties. Both are of high purity but contain free and combined moisture to the extent of about 1.5 per cent. Pechiney BeO has a larger mean crystallite size (0.2 — 0.3μ) than Brush UOX (0.1 — 0.15μ) and a larger range of crystallite size, and both contain a small proportion of crystallites of size 1μ. and larger. The tap density of UOX is much lower than that of Pechiney, and its surface area is higher by a factor of two, UOX BeO can be hot—pressed or cold—pressed and sintered to high densities at temperatures of 1400º and 1500ºC respectively, which are approximately 300ºC lower than those required for Pechiney. Grain size of fabricated material increases with fabrication temperature in both grades, and at the same temperatures is larger for UOX than Pechiney. However, at comparable densities grain sizes are also comparable for the two materials, The bend strength at room temperature of hot—pressed Pechiney BeO reaches a maximum of approximately 30,000 p.s.i. when pressed at 1750ºC. Above this temperature the …
Date:
November 1961
Creator:
Reeve, Keith Desmond, 1928- & Ramm, E. J.
Object Type:
Report
System:
The UNT Digital Library
Determination of the Stability Constants of Salicylato-Beryllium Complexes by a Distribution Method
An investigation of the solvent extraction behavior of salicylato- beryllium complexes is reported. A simplified method for calculating the stability constants has been developed. The values obtained are beta /sub 1/ = 4.0 x 10/sup 12/ and beta /sub 2/ = 4 3 x 10/sup 22/ in 0.15 M sodium perchlorate. (auth)
Date:
November 1, 1961
Creator:
Szego, L. E.
Object Type:
Report
System:
The UNT Digital Library
Electrical and Electronic Symbols & Drawing Committee
This manual represents the recommendations of the Instrumentation and Controls Division committee on Electrical and Electronic Symbols and Drawing that have been issued to date. Section I consists of copies of the American Standards Association Graphical Symbols for Electrical Diagrams, with certain variations or additions that have been recommended by the Committee to clarify or more positively identify the device or element symbolized. Since publication of the present ASA standards, certain elements, such as the transistor, have come into common use. Committee and represent the symbols have been selected after considerable study by the Committee and represent the symbols that seem to be standard Reference Information series, Interim E--1.
Date:
November 1961
Creator:
Bates, A.E.G
Object Type:
Report
System:
The UNT Digital Library
Equation of State of Nevada Alluvium
This report analyzes two samples of Nevada alluvium to measure density and analyze the variety of particles in both samples.
Date:
November 1961
Creator:
McQueen, R. G. & Marsh, Sherman P.
Object Type:
Report
System:
The UNT Digital Library
Fuel Element Transient Temperature Studies
A method is presented for the analysis of transient temperatures in a homogeneous circular cylindrical fuel element in a coolant channel with no axial conduction and no heat loss to the channel wall. In addition, some results were obtained for mean fuel element temperatures in power transients for a simpler model, but accounting for details of the axial coolant temperature distribution in the unsteady state. (auth).
Date:
November 1, 1961
Creator:
Thompson, J. J.
Object Type:
Report
System:
The UNT Digital Library
Some methods of surface analysis for the prediction of thermal resistance of metal contacts
"Equations for the heat-transfer coefficient existing at the interface of two metals in contact are discussed. The results of applying the equations (with a graphical determination of the geometric parameters) to an iron--aluminum contact are presented. A method is given for performing the graphical analysis by means of a general purpose analog computer. Data are included that were obtained by applying this method to Blanchard ground stainless steel surfaces in contact. Statistical analysis was applied to surfaces to determine the geometric properties of the contact as a function of root-mean-square roughness and method of surface preparation."
Date:
November 1, 1961
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Molecular Association and Electronic Structures of Nickel (II)
"A new phenomenon which can, under certain circumstances, account for anomalous magnetic and spectral behavior of planar nickel(II) complexes has been discovered. This is a molecular association of the solute molecules in solvents of low coordinating power. It is shown that the magnetic moment and spectrum of bis(2.6-dimethyl1-3,5-heptanediono)nickel(II), Ni(DIBM)z, dissolved in toluene, are dependent upon both temperature and concentration.
Date:
November 30, 1960
Creator:
Cotton, F. Albert (Frank Albert), 1930-2007 & Fackler, John P.
Object Type:
Report
System:
The UNT Digital Library
Radioactivation Analysis
The development of nuclear reactors and other nuclear particle sources has given the analyst a new analysis method which can be successfully applied to the determination of microgram and submicrogram quantities of many elements. Known as "radioactivation analysis", this method is one in which an "activation" by some type of nuclear reaction is used to produce a radioactive isotope of the element to be determined. Since this radioisotope decays with its own characteristic radiations and half-life, it is possible to make radioactivation analysis a very specific analysis. Chemical separations of the radioisotope are employed whenever necessary and its radioactivity measured by some type of radiation counter.
Date:
November 30, 1960
Creator:
Leddicotte, G. W.
Object Type:
Report
System:
The UNT Digital Library