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in subjects: "Experimental Data"

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Radionuclides in plankton from the South Pacific Basin

We have initiated an investigation of the utility of marine plankton as bioconcentrating samplers of low-level marine radioactivity in the southern hemisphere. A literature review has shown that both freshwater and marine plankton have trace element and radionuclide concentration factors (relative to water) of up to 10/sup 4/. We participated in Operations Deepfreeze 1981 and 1982, collecting a total of 48 plankton samples from the USCGC Glacier on its Antarctic cruises. Battelle Pacific Northw… more

Date: March 23, 1984

Creator: Marsh, K.V. & Buddemeier, R.W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Experimental and theoretical investigations of marine stratocumulus cloud sensitivity to climate parameters using ship-trail clouds

The formation and radiative properties of clouds are poorly parameterized in numerical climate models, especially marine boundary layer clouds. Twomey (1991), after describing the importance of cloud microphysics to the climate problem, states Clearly, many more field measurements and laboratory experiments are called for, rather than endless repetitions of computer simulations that are closely related to each other and parameterize in very similar ways.'' The effort described here is a field e… more

Date: January 1, 1991

Creator: Porch, W.; Buchwald, M.; Glatzmaier, T.; Kao, C.-Y.; Unruh, W. (Los Alamos National Lab., NM (United States)); Hudson, J. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Magnetic field, closed orbit, and energy measurement in the Bevatron

This report provides the information necessary for a better evaluation of particle energy in the Bevatron. Previously, the nominal magnetic field value and radius were used to calculate the value for the kinetic energy of the particle. This value was good to a few percent. Today, more and more experimenters would like to know the energy to a more precise value. To this end, corrections to the measured magnetic field values and the radial closed orbit are provided.

Date: November 1, 1981

Creator: Crebbin, K. C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Measurements of Non-Leptonic Weak Decays of Lambda Hypernuclei

Aspects of recent measurements of the mesonic and non-mesonic partial decay rates of {sub {Lambda}}{sup 5}He, and {sub {Lambda}}{sup 12}C are discussed. We comment on what the experiments tell us about the spin-isospin structure of {Delta}S=1 weak interaction in the nuclear environment. 14 refs., 1 fig.

Date: January 1, 1991

Creator: Schumacher, Reinhard A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Numerical study of the NOL large-scale gap test

The NOL large-scale gap test has been modeled numerically using the LASL reactive hydrodynamics code 2DE with Forest Fire burn rates. The model gives good agreement between calculated and experimental critical gap values for VTQ-2 and Composition B. The calibration of peak pressure in the gap versus gap length has been obtained from these calculations, and is in good agreement with the published experimental curve. The two-dimensional nature of the gap test is evident from the curvature of the … more

Date: January 1, 1980

Creator: Bowman, A.L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Validation and sensitivity of a simulated photograph technique for visibility modeling

The Los Alamos Scientific Laboratory (LASL) visibility model is capable of producing simulated before and after pictures that illustrate visual effects of smoke plumes. Although the model has been under development for a few years, until recently there had been very little testing of the model against field experience or testing of sensitivity of the model results to numerical approximations used in the model. Further validation and sensitivity testing of the LASL model began in late 1979. The … more

Date: January 1, 1980

Creator: Williams, M.; Chan, L.Y. & Lewis, R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Di-leptons at the Bevalac

Recent results on the production of di-leptons measured by the Di-Lepton-Spectrometer (DLS) collaboration are discussed. Results are reported from observations made on p /plus/ Be collisions with proton beams from 1.0 to 4.9 GeV and on Ca collisions with calcium beams of 1.0 to 2.0 GeV/A. The shape of the distributions are similar to that at higher energies. The low mass cross section appears to be explained by ..pi..-..pi.. annihilation, but detailed calculations are needed to substantiate tha… more

Date: March 1, 1988

Creator: Matis, H.S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Characterization of solids in the Three Mile Island Unit 2 Reactor defueling water: Addendum

Shortly after ORNL/TM-10362 was issued, it was discovered that a series of 31 figures had been inadvertently omitted. These figures, which consist of scanning electron microscope (SEM) photographs and energy-dispersive X-ray fluorescence scans, provide significant information about the results obtained in the tests performed with water sample W3. This Addendum includes these figures. Details of and comments on the SEM photographs may be found in ORNL/TM-10362.

Date: March 1, 1988

Creator: Campbell, D.O.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Environmental assessment for the Satellite Power System (SPS) Concept Development and Evaluation Program (CDEP). [Microwave and non-microwave health and ecological assessment]

In the satellite power system (SPS), satellites in geosynchronous earth orbit would collect solar energy in space, convert it to microwaves, and transmit the microwaves to receiving antennas (rectennas) on earth. At the rectennas, the microwave energy would be converted to electricity. This SPS environmental assessment considers the microwave and nonmicrowave effects on the terrestrial environment and human health, atmospheric effects, and effects on electromagnetic systems. No environmental pr… more

Date: August 1, 1980

Creator: Valentino, A.R.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Conductor qualification tests for the 30-MJ Bonneville Power Administration SMES coil

The 30-MJ energy storage coil for the Bonneville Power Administration requires a low-loss, cryostable conductor that is able to carry 4.9 kA in a field of 2.8 T and will maintain its properties over 10/sup 8/ partial discharge cycles. The multi-level cable which satisfies these requirements has been extensively tested at various stages in its development and in its final form. Tests have been performed to determine the effect of manufacturing options on ac losses, low temperature electrical res… more

Date: January 1, 1980

Creator: Schermer, R. I.; Boenig, H. J.; Henke, M.; Turner, R. D. & Schramm, R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Fast-neutron total and scattering cross sections of elemental palladium

Neutron total cross sections of palladium are measured from approx. = 0.6 to 4.5 MeV with resolutions of approx. = 30 to 70 keV at intervals of less than or equal to 50 keV. Differential neutron elastic- and inelastic-scattering cross sections are measured from 1.4 to 3.85 MeV at intervals of 50 to 100 keV and at 10 to 20 scattering angles distributed between approx. = 20 and 160/sup 0/. The experimental results are compared with respective quantities given in ENDF/B-V and used to deduce an opt… more

Date: June 1, 1982

Creator: Smith, A. B.; Guenther, P. T. & Whalen, J. F.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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High-temperature turbine technology program hot-gas path development test. Part II. Testing

This topical report of the US Department of Energy High-Temperature Turbine Technology (DOE-HTTT) Phase II program presents the results of testing full-scale water-cooled first-stage and second-stage turbine nozzles at design temperature and pressure to verify that the designs are adequate for operation in a full-scale turbine environment. Low-cycle fatigue life of the nozzles was demonstrated by subjecting cascade assemblies to several hundred simulated startup/shutdown turbine cycles. This te… more

Date: March 1, 1982

Creator: Horner, M. W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Radiation dosimetry through spectral definition

We have developed a fieldable instrumentation system for determining from measured flux spectra, both the neutron and gamma ray dose rate distributions associated with radioactive sources. This system includes the sensors, the computer-based data acquisition and analysis hardware, and the requisite software for unfolding the sensor response functions to obtain the flux spectra, and for folding the resultant flux spectra with appropriate flux spectrum-to-dose conversion factors. We use bismuth g… more

Date: January 1, 1985

Creator: Dowdy, E. J.; Moss, C. E.; Robba, A. A.; Evans, A. E.; Lucas, M. C.; Shunk, E. R. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Neutron scattering from solutions: the hydration of lanthanide and actinide ions

The neutron scattering difference method is described and applied to investigations of the aqua rare-earth ions, Nd/sup 3 +/ and Dy/sup 3 +/. Metal-water distances and hydration numbers have been unambiguously determined for these ions' inner coordination spheres. The values of the hydration number, n, of 8.5 +- 0.2 for Nd/sup 3 +/ and 7.4 +- 0.5 for Dy/sup 3 +/, directly support the claim of Spedding et al. that n decreases by one unit across the lanthanide series. The possible application of … more

Date: January 1, 1985

Creator: Hahn, R.L.; Narten, A.H. & Annis, B.K.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Thermo-chemical energy conversion and storage. Final report

Research support for the cyclohexane/benzene heat pipe development program at Sandia Laboratories is reported. The apparent kinetics of the gas-phase catalytic dehydrogenation of cyclohexane to benzene in an internally recirculated (gradientless) reactor over the temperature range from 500 to 800/sup 0/F at 1 atm at various space velocities was studied. A kinetic model was developed based on a reversible mass-action rate expression and a catalyst effectiveness factor which is able to correlate … more

Date: September 1, 1978

Creator: Ritter, A.B.; DeLancey, G.B.; Schneider, J. & Silla, H.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Cross Sections for X-Ray Photoelectron-Induced Desorption of Hydrogen Ions From Metal Surfaces

We have measured the cross sections for x-ray photoelectron-induced desorption of hydrogen ions from beryllium, carbon, aluminum, tantalum, and gold surfaces. This report describes the results of the cross-section measurements, and discusses a time-of-flight technique that allows the determination of ionic-desorption cross sections as small as 10/sup -25/ cm/sup 2/ per photoelectron. 19 refs., 7 figs.

Date: September 20, 1985

Creator: Kinney, J. H.; Siekhaus, W. J. & Anderson, R. A.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Research, development and demonstration of nickel-iron batteries for electric vehicle propulsion. Annual report for 1979

Research progress in the development of Ni/Fe batteries (electrodes in particular) for the period is described. The negative plate demonstrated a reliable lifetime of almost 1000 cycles; 20 mm positive plates were proved feasible; prototype cells yielded output at about 50 Wh/kg and 100 Wh/liter; program goals of 20% greater than these figures appear feasible. 27 figures, 20 tables. (RWR)

Date: June 1, 1980

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Magnetic excitations in transition-metal ferromagnets. Recent progress and future prospects on neutron scattering experiments

A review is given on current neutron scattering experiments at Brookhaven National Laboratory on transition-metal ferromagnets Ni, Fe, Pd/sub 2/MnSn and MnSi. The scattering intensity in constant-energy scans, observed above T/sub c/ in all of these materials, exhibited a clear peak at finite momentum transfers. Using a simple scattering function with double-Lorentzian shape, we demonstrate that this peak is a manifestation of simple diffusive spin fluctuations. Experimental results of several … more

Date: January 1, 1984

Creator: Uemura, Y.J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Terrestrial fate of coal-liquid constituents: behavior of alkyl anilines in soil

The low molecular weight aromatic amines (anilines) are important water soluble constituents of coal liquids. The impact of anilines released to the terrestrial environment will largely depend on their mobility and persistence. Studies were conducted to investigate those processes governing the mobility and persistence of the alkylanilines, namely, soil sorption and chemical/microbial degradation. Soil sorption measurements were conducted on aniline and several methyl substituted anilines on A … more

Date: July 1, 1982

Creator: Felice, L. J.; Zachara, J. M. & Rogers, J. E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Oxidation/gasification of carbon residue on retorted oil shale. Final report

Studies of the oxidation and gasification of oil shale char were extended to an investigation of the effects of mineral catalysis. Six shales with differing mineral compositions were studied, including samples from the saline zone in the Western Colorado and from the Antrim shales of Michigan. Oxidation kinetics data, corrected for mass transfer effects, were compared for all six samples. A high assay shale from Utah and a sample from the saline zone were found to have the highest oxidation rat… more

Date: January 16, 1984

Creator: Thomson, W. J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Permeability damage to natural fractures caused by fracturing fluid polymers

Formation damage studies using artificially fractured, low-permeability sandstone cores indicate that viscosified fracturing fluids can severely restrict gas flow through these types of narrow fractures. These studies were performed in support of the Department of Energy's Multiwell Experiment (MWX). Extensive geological and production evaluations at the MWX site indicate that the presence of a natural fracture system is largely responsible for unstimulated gas production. The laboratory format… more

Date: April 1, 1988

Creator: Gall, B. L.; Sattler, A. R.; Maloney, D. R. & Raible, C. J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Feasibility Studies of in-Situ Coal Gasification in the Warrior Coal Field. Quarterly Report

Studies in support of in-situ gasification involved experiments in bench-scale combustors where three parameters were varied independently: initial fuel bed temperature, applied air flow and water vapor influx rate. Methods for measuring the thermal conductivity of solids at high temperatures were evaluated and measurements of the thermal conductivity and thermal diffusivity were made over a temperature range for several samples of coke. (LTN)

Date: January 1, 1980

Creator: Douglas, George W. & McKinley, Marvin D.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Phoenix I energy extraction experiment

Energy extraction experiments are reported for the Phoenix I amplifier driven by a discharge-initiated oscillator-preamplifier system operating on mixtures of either SF/sub 6/-HI or SF/sub 6/-C/sub 2/H/sub 6/ and an electron-beam-initiated intermediate amplifer (lambda-3) fueled with H/sub 2/ and F/sub 2/ mixtures. When the oscillator-preamplifier system operated with mixtures of SF/sub 6/-HI the input spectrum to the Phoenix I amplifier contained approx. 28 P-branch vibrational-rotational line… more

Date: July 1, 1980

Creator: Hoffman, J. M.; Patterson, E. L.; Tisone, G. C. & Moreno, J. B.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Kilowatt Isotope Power System: component report for the Ground Demonstration System Accumulator

The Model Number ORC1A3A01 System Accumulator for the Kilowatt Isotope Power System was expulsion tested and demonstrated to be in compliance with the requirements of Sundstrand Explusion Test Procedure, TP 400. Test requirements of TP 400 were extracted from the Kilowatt Isotope Power System, Ground Demonstration System Test Plan.

Date: January 31, 1978

Creator: Brainard, E.L.

Item Type: Report

Partner: UNT Libraries Government Documents Department