Adhesion of electrodeposited coatings on U--Ti and Mulberry (open access)

Adhesion of electrodeposited coatings on U--Ti and Mulberry

Quantitative test data are presented for two etched and plated uranium alloys, U-0.75 Ti and mulberry (U-7.5 Nb, 2.5 Zr). Conical head tensile tests showed that the bond between nickel plating and U--Ti was stronger than that between nickel plating and mulberry. Ring shear tests showed that electroplated nickel coatings are more adherent than other coatings applied to U--Ti. Utilizing a newly developed etchant for mulberry, large cylinders of this material were joined to aluminum and then tensile tested. Results showed that the strength of the joint was directly influenced by the taper angle on the mulberry.
Date: May 1, 1976
Creator: Johnson, H. R. & Dini, J. W.
System: The UNT Digital Library
Bell's theorem without hidden variables (open access)

Bell's theorem without hidden variables

The CHSH inequality is demonstrated from locality alone without using either determinism or the concept of hidden variables. Then a comment is made about the violation of this inequality by quantum theory. (JFP)
Date: May 1, 1976
Creator: Eberhard, P. H.
System: The UNT Digital Library
Determination of dibutylbutylphosphonate in the presence of tributylphosphate by gas liquid chromatography (open access)

Determination of dibutylbutylphosphonate in the presence of tributylphosphate by gas liquid chromatography

A gas chromatographic determination of dibutylbutyl-phosphonate in the presence of tributylphosphate was developed. The separation was done on a 183 cm by 3 mm stainless steel column packed with 10 percent Carbowax 20M--TPA on 80/100 mesh Chromosorb W AW and detected by flame ionization. A nitrogen carrier gas flow of 40 cm/sup 3//min and an oven temperature of 180/sup 0/C produced optimum resolution and column efficiency. The use of temperature programming reduced retention times and thus analysis time. An internal standard of 10 percent v/v n-tridecane was added to all samples and standards.
Date: May 1, 1976
Creator: Johnson, S. J.
System: The UNT Digital Library
Industrial low temperature utilization of geothermal resources (open access)

Industrial low temperature utilization of geothermal resources

This brief presentation on industrial utilization of low temperature geothermal resources first considers an overview of what has been achieved in using geothermal resources in this way and, second, considers potential, future industrial applications.
Date: May 1, 1976
Creator: Howard, J. H.
System: The UNT Digital Library
Large high current density superconducting solenoids for use in high energy physics experiments (open access)

Large high current density superconducting solenoids for use in high energy physics experiments

Very often the study of high energy physics in colliding beam storage-rings requires a large magnetic field volume in order to detect and analyze charged particles which are created from the collision of two particle beams. Large superconducting solenoids which are greater than 1 meter in diameter are required for this kind of physics. In many cases, interesting physics can be done outside the magnet coil, and this often requires that the amount of material in the magnet coil be minimized. As a result, these solenoids should have high current density (up to 10/sup 9/ A m/sup -2/) superconducting windings. The methods commonly used to stabilize large superconducting magnets cannot be employed because of this need to minimize the amount of material in the coils. A description is given of the Lawrence Berkeley Laboratory program for building and testing prototype solenoid magnets which are designed to operate at coil current densities in excess of 10/sup 9/ A m/sup -2/ with magnetic stored energies which are as high as 1.5 Megajoules per meter of solenoid length. The coils use intrinsically stable multifilament Nb--Ti superconductors. Control of the magnetic field quench is achieved by using a low resistance aluminum bore tube which …
Date: May 1, 1976
Creator: Green, M. A.; Eberhard, P. H. & Taylor, J. D.
System: The UNT Digital Library
Long-pulse neutral beam power supply system for LBL 20 kV, 10 A sources (open access)

Long-pulse neutral beam power supply system for LBL 20 kV, 10 A sources

A description is given of the power supplies and control system for the LBL 20 kV, 10 A, 10 sec long-pulse neutral beam source test facility, now in operation. Such sources are used in a number of existing and planned fusion power experiments.
Date: May 1, 1976
Creator: Honey, V. J.; Baker, W. R. & Fitzgerald, M. L.
System: The UNT Digital Library
Neutral Currents - The Structure of the Coupling (open access)

Neutral Currents - The Structure of the Coupling

The authors report here on latest results from an investigation of the form of the neutral current coupling in the inclusive channels {nu}{sub {mu}} + N {yields} {nu}{sub {mu}} + hadrons and {bar {nu}}{sub {mu}} + N {yields} {bar {nu}}{sub {mu}} + hadrons. The experiment was conducted by the Caltech-Fermilab group in October 1974. The data were taken in the Fermilab narrow band beam set to a mean secondary hadron energy of {+-} 170 GeV. The distributions of total energy, observed in the target calorimeter, for charged current events in which the muon momentum was measured, shown in figure 1, reflect the dichromatic structure of the beam, with average energies for neutrinos from pion and kaon decay of 50 and 150 GeV, respectively. The two main sources of background present in the data sample come from cosmic ray interactions. and from neutrinos (and anti-neutrinos) which are produced by decays before momentum and sign selection has occurred (wide-band background). Both backgrounds are measured and empirically subtracted from the data. The first (cosmic rays) is measured in an off-beam gate. The second (wide-band) is measured by closing a slit at the entrance to the decay pipe. Thus, the data sample contains beam …
Date: May 1, 1976
Creator: Stutte, Linda & /Caltech
System: The UNT Digital Library
Partitioning of actinide elements from high-level waste using laser photochemical methods (open access)

Partitioning of actinide elements from high-level waste using laser photochemical methods

The feasibility of photochemically fractionating the actinides in nuclear waste processing has been evaluated on a preliminary basis. The data indicate that there are potentially useful photo-redox reactions. However, there is a serious lack of data on photochemical parameters for the solutions conditions which exist in nuclear waste processing. The problem areas relevant to photochemical processing are identified. The experimental areas which must be investigated in order to further evaluate the photochemistry are defined. A research and development program is required to determine whether these photochemical reactions can be successfully modified and adapted into a functional actinide fractionating process.
Date: May 1, 1976
Creator: Gangwer, T
System: The UNT Digital Library
Plutonium Isotopic Measurements by Gamma-Ray Spectroscopy (open access)

Plutonium Isotopic Measurements by Gamma-Ray Spectroscopy

The nondestructive assay of plutonium is important as a safeguard tool in accounting for stategic nuclear material. Several nondestructive assay techniques, e.g., calorimetry and spontaneous fission assay detectors, require a knowledge of plutonium and americium isotopic ratios to convert their raw data to total grams of plutonium. This paper describes a nondestructive technique for calculating plutonium-238, plutonium-240, plutonium-241 and americium-241 relative to plutonium-239 from measured peak areas in the high resolution gamma-ray spectra of solid plutonium samples. Gamma-ray attenuation effects have been minimized by selecting sets of neighboring peaks in the spectrum whose components are due to the different isotopes. Since the detector efficiencies are approximately the same for adjacent peaks, the accuracy of the isotopic ratios are dependent on the half-lives, branching intensities and measured peak areas. The data presented describes the results obtained by analyzing gamma-ray spectra in the energy region from 120 to 700 keV. The majority of the data analyzed was obtained from plutonium material containing 6% plutonium-240. Sample weights varied from 0.25 g to approximately 1.2 kg. The methods have also been applied to plutonium samples containing up to 23% plutonium-240 with weights of 0.25 to 200g. Results obtained by gamma-ray spectroscopy are compared to …
Date: May 1, 1976
Creator: Haas, Francis X. & Lemming, John F.
System: The UNT Digital Library
Proceedings of the first workshop on sampling geothermal effluents, October 20--21, 1975, Las Vegas, Nevada (open access)

Proceedings of the first workshop on sampling geothermal effluents, October 20--21, 1975, Las Vegas, Nevada

Twelve papers are included, and separate abstracts were prepared for nine; all were selected for ERDA Energy Research Abstracts (ERA) and one for Energy Abstracts for Policy Analysis (EAPA). The others appeared previously as: ERA 1: 8408, ERA 1: 8402, and ERA 1: 8409. (MHR)
Date: May 1, 1976
Creator: unknown
System: The UNT Digital Library
Proceedings of the symposium on macroscopic features of heavy-ion collisions, Argonne, Illinois, 1--3 April 1976. Volume I. Invited papers. [Argonne National Laboratory, April 1-3, 1976] (open access)

Proceedings of the symposium on macroscopic features of heavy-ion collisions, Argonne, Illinois, 1--3 April 1976. Volume I. Invited papers. [Argonne National Laboratory, April 1-3, 1976]

Separate abstracts were prepared for the 13 papers presented. (JFP)
Date: May 1, 1976
Creator: unknown
System: The UNT Digital Library
Proceedings of the symposium on macroscopic features of heavy-ion collisions, Argonne, Illinois, 1--3 April 1976. Volume II. Contributed papers. [Argonne National Laboratory, April 1-3, 1976] (open access)

Proceedings of the symposium on macroscopic features of heavy-ion collisions, Argonne, Illinois, 1--3 April 1976. Volume II. Contributed papers. [Argonne National Laboratory, April 1-3, 1976]

Separate abstracts were prepared for the 51 papers presented. (JFP)
Date: May 1, 1976
Creator: unknown
System: The UNT Digital Library
Projected benefits of actinide partitioning (open access)

Projected benefits of actinide partitioning

Possible benefits that could accrue from actinide separation and transmutations are presented. The time frame for implementing these processes is discussed and the expected benefits are qualitatively described. These benefits are provisionally quantified in a sample computation.
Date: May 1, 1976
Creator: Braun, C & Goldstein, M
System: The UNT Digital Library
Recent results on the new particle states below 3. 7 GeV produced in e/sup +/e/sup -/ annihilations. [Review] (open access)

Recent results on the new particle states below 3. 7 GeV produced in e/sup +/e/sup -/ annihilations. [Review]

The review of recent results on new particle states below 3.7 GeV produced in e/sup +/e/sup -/ annihilations includes intermediate states between the psi and psi/sup -/ observed via their hadronic decay modes, inclusive gamma spectra at the psi and psi/sup -/, the reaction psi/sup -/ ..-->.. ..gamma gamma..psi, and a search for the eta/sub 0/ with p anti p decay mode. (JFP)
Date: May 1, 1976
Creator: Goldhaber, G.
System: The UNT Digital Library
Studies of exotic light nuclei (open access)

Studies of exotic light nuclei

For neutron-deficient nuclei, extension of the T/sub z/ = --3/2 series of strong beta-delayed proton precursors to /sup 61/Ge is discussed. For neutron-excess nuclei, heavy-ion induced, multi-nucleon transfer reaction studies of masses and energy levels of 2sld shell nuclei with T/sub z/ greater than or equal to 5/2 are covered. In addition, preliminary attempts to employ the (/sup 7/Li,/sup 2/He) reaction for the latter studies are shown; a new detection system capable of observing unbound final states as reaction products is demonstrated via investigations of the (..cap alpha..,/sup 2/He) reaction.
Date: May 1, 1976
Creator: Cerny, J.
System: The UNT Digital Library
Superconductors by powder metallurgy techniques (open access)

Superconductors by powder metallurgy techniques

Fabrication methods for Nb/sub 3/Sn type compounds are described. Information is included on the Bell Telephone process, the General Electric tape process, superconductor stability, the bronze process, powder metallurgy multifilamentary tapes and wires, and current assessment of powder metallurgy superconducting wire. (JRD)
Date: May 1, 1976
Creator: Pickus, Milton R. & Wang, J. Ling-Fai
System: The UNT Digital Library
Tests of Unitarity (open access)

Tests of Unitarity

Various tests of unitarity are briefly reviewed. It is concluded that there is consistency with quantum theory and that similar tests could be made in many other multipurpose experiments, especially those of much higher energies. (JFP)
Date: May 1976
Creator: Eberhard, P. H.
System: The UNT Digital Library
Transport aspects of electrochemical machining and electrometallurgy (open access)

Transport aspects of electrochemical machining and electrometallurgy

Transport processes in large measure determine the rate at which electrolytic metal deposition and dissolution can be conducted. Unusually high rates, often accompanied by the formation of solid reaction products, are achieved in electrochemical machining by the use of high electrolyte flow velocities between closely-spaced electrodes. Geometrical shape and surface finish resulting from deposition or dissolution reactions are determined by the current distribution on a macroscopic and microscopic scale. Macroscopic current distributions have been determined experimentally by different electrical and optical means and are compared to theoretical expectations based on transport correlations and numerical models.
Date: May 1976
Creator: Muller, Rolf H.
System: The UNT Digital Library
Proceedings of the international conference on liquid metal technology in energy production (open access)

Proceedings of the international conference on liquid metal technology in energy production

Each paper in the volume has been separately abstracted and indexed. (DG)
Date: May 3, 1976
Creator: Cooper, M. H.
System: The UNT Digital Library
Working model for Ge(Li) detector counting efficiencies (open access)

Working model for Ge(Li) detector counting efficiencies

A practical model has been developed that is capable of describing the overall Ge(Li) detection efficiency as a function of several known or measurable parameters such as gamma-ray energy, source-to-detector distance, detector dimensions, source extension (area and volume), source composition, and external absorbers. The algorithms of this model permit the evaluation of a large variety of sample shapes, sizes, material compositions, and source strengths with a single initial detector calibration. Sources of small volume generally can be measured to within 1 to 2 percent regardless of energy or source-to-detector distance. Even large volume sources placed at close-in geometries give results within 10 percent of the correct values.
Date: May 5, 1976
Creator: Gunnink, R. & Niday, J. B.
System: The UNT Digital Library
High-intensity, subkilovolt x-ray calibration facility. [Cockroft--Walton accelerator facility] (open access)

High-intensity, subkilovolt x-ray calibration facility. [Cockroft--Walton accelerator facility]

A high-intensity subkilovolt x-ray calibration source utilizing proton-induced inner-shell atomic fluorescence of low-Z elements is described. The high photon yields and low bremsstrahlung background associated with this phenomenon are ideally suited to provide intense, nearly monoenergetic x-ray beams. The proton accelerator is a 3 mA, 300 kV Cockroft-Walton using a conventional rf hydrogen ion source. Seven remotely-selectable targets capable of heat dissipation of 5 kW/cm/sup 2/ are used to provide characteristic x-rays with energies between 100 and 1000 eV. Source strengths are of the order of 10/sup 13/ to 10/sup 14/ photons/sec. Methods of reducing spectral contamination due to hydrocarbon build-up on the target are discussed. Typical x-ray spectra (Cu-L, C-K and B-K) are shown.
Date: May 6, 1976
Creator: Kuckuck, R. W.; Gaines, J. L. & Ernst, R. D.
System: The UNT Digital Library
Assessment of a chemical getter for scavenging tritium from an inert gas (open access)

Assessment of a chemical getter for scavenging tritium from an inert gas

Results are presented of a study aimed at determining the feasibility of using chemical getter beds to scavenge tritium from inert gases. Two types of getter bed, fixed and fluidized, were considered, using cerium as the getter material. Mathematical-modeling results and capital-cost estimates indicate that not only is the gettering approach technically feasible, it could lead to considerable cost savings over catalytic oxidation, the tritium-removal method traditionally used.
Date: May 7, 1976
Creator: Maienschein, J. L.
System: The UNT Digital Library
Diffusion due to a single wave in a magnetized plasma (open access)

Diffusion due to a single wave in a magnetized plasma

Hamiltonian methods are used to study the motion of a particle in the field BZ and a single electrostatic wave. The particle motion is studied by numerically integrating the equations of motion. Diagrams of various particle trajectories are given. (MOW)
Date: May 10, 1976
Creator: Smith, G. R. & Kaufman, A. N.
System: The UNT Digital Library
500 MHz modulation system for the 6 MeV, 700 A Astron Accelerator (open access)

500 MHz modulation system for the 6 MeV, 700 A Astron Accelerator

An rf system is described for the 500-MHz cylindrical resonator that is coupled to the Astron beam to modulate its energy by +- 1.5 percent.
Date: May 17, 1976
Creator: Reginato, L. L. & Smith, B. H.
System: The UNT Digital Library