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Characteristics of ion Bernstein wave heating in JIPPT-II-U tokamak

Description: Using a transport code combined with an ion Bernstein wave tokamak ray tracing code, a modelling code for the ion Bernstein wave heating has been developed. Using this code, the ion Bernstein wave heating experiment on the JIPPT-II-U tokamak has been analyzed. It is assumed that the resonance layer is formed by the third harmonic of deuterium-like ions, such as fully ionized carbon, and oxygen ions near the plasma center. For wave absorption mechanisms, electron Landau damping, ion cyclotron ha… more
Date: November 1, 1985
Creator: Okamoto, M. & Ono, M.
Partner: UNT Libraries Government Documents Department
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FY 1986 current fiscal year work plan

Description: This Current Year Work Plan presents in detail a description of the activities to be performed by the Joint Integration Office/RI during FY86. It breaks down the activities into two major work areas: Program Management and Program Analysis. Program Management is performed by the JIO/RI by providing technical planning and guidance for the development of advanced TRU waste management capabilities. This includes equipment/facility design, engineering, construction, and operations. These functions … more
Date: November 1, 1985
Partner: UNT Libraries Government Documents Department
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Fiscal year 1986 program plan for the Defense Transuranic Waste Program (DTWP)

Description: The Defense TRU Waste Program (DTWP) is the focal point for the Department of Energy is national planning, integration, and technical development for TRU waste management. The scope of this program extends from the point of TRU waste generation through delivery to a permanent repository. The TRU program maintains a close interface with repository development to ensure program compatibility and coordination. The defense TRU program does not directly address commercial activities that generate TR… more
Date: November 1, 1985
Partner: UNT Libraries Government Documents Department
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Determining yttrium in plutonium by anion-exchange x-ray fluorescence

Description: This report describes a method for determining yttrium in plutonium using an anion-exchange separation and x-ray fluorescence. We add zirconium to the plutonium solution as an internal standard. We oxidize the plutonium to Pu + 4 and pass the solution through an anion-exchange column with 8M HCl. The Pu + 4 sorbs to the resin and the yttrium and zirconium pass through completely. We evaporate the eluate solution containing the yttrium and zirconium and transfer it to a 10-ml volumetric flask. W… more
Date: November 1, 1985
Creator: Martell, C. J. & Hansel, J. M.
Partner: UNT Libraries Government Documents Department
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Measurement of Stark amplitudes in the 6SP/sub 1/2/ 7SP/sub 1/2/ transition of atomic thallium

Description: This thesis describes the measurement of Stark amplitude coefficients and US for the 6SP/sub 1/2/ 7SP/sub 1/2/ transition of SVTl in an external static electric field E. The coefficient is determined by measuring the absorption of linearly polarized 293 nm light at the F=1 F'=1 resonance in a cell with known electric field and interaction length, and calibrated thallium density. Then US is determined from the ratio US S/ S of intensities of the F=0 F=1 and F=0 F=0 resonance lines in fluorescenc… more
Date: November 1, 1985
Creator: Tanner, C.E.
Partner: UNT Libraries Government Documents Department
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Transfer of hot dry rock technology

Description: The Hot Dry Rock Geothermal Energy Development Program has focused worldwide attention on the facts that natural heat in the upper part of the earth's crust is an essentially inexhaustible energy resource which is accessible almost everywhere, and that practical means now exist to extract useful heat from the hot rock and bring it to the earth's surface for beneficial use. The Hot Dry Rock Program has successfully constructed and operated a prototype hot, dry rock energy system that produced he… more
Date: November 1, 1985
Creator: Smith, M.C.
Partner: UNT Libraries Government Documents Department
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Applications of high resolution NMR to geochemistry: crystalline, glass, and molten silicates

Description: The nuclear spin interactions and the associated quantum mechanical dynamics which are present in solid state NMR are introduced. A brief overview of aluminosilicate structure is presented and crystalline structure is then reviewed, with emphasis on the contributions made by /sup 29/Si NMR spectroscopy. The local structure of glass aluminosilicates as observed by NMR, is presented with analysis of the information content of /sup 29/Si spectra. A high-temperature (to 1300/sup 0/C) NMR spectrosco… more
Date: November 1, 1985
Creator: Schneider, E.
Partner: UNT Libraries Government Documents Department
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Space Nuclear Safety Program. Progress report, July 1984

Description: This technical monthly report covers studies related to the use of /sup 238/PuO/sub 2/ in radioisotope power systems carried out for the Office of Special Nuclear Projects of the US Department of Energy by Los Alamos National Laboratory. Most of the studies discussed here are ongoing; results and conclusions described may change as the work continues. 10 figs.
Date: November 1, 1985
Creator: George, T.G. (comp.)
Partner: UNT Libraries Government Documents Department
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Halo recycler for the Tandem Mirror Experiment Upgrade

Description: The halow recycler is a mechanical device on the Tandem Mirror Experiment Upgrade (TMX-U) that is designed to increase the density at the plasma edge providing enhanced shielding of the core plasma from background neutrals. Each recycler body, which consists of coaxial annular cylinders and a adjacent plenum closely follows the magnetic flux tubes in the transition region of TMX-U. Each plenum is provided with gas feed and pressure measurement systems as well as Langmuir probes. This paper desc… more
Date: November 14, 1985
Creator: Brooksby, C. A.; Allen, S. L.; Pedrotti, L. R.; Simonen, T. C.; Wood, B. E.; Hsu, W. L. et al.
Partner: UNT Libraries Government Documents Department
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Inverse problem for in vivo NMR spatial localization

Description: The basic physical problem of NMR spatial localization is considered. To study diseased sites, one must solve the problem of adequately localizing the NMR signal. We formulate this as an inverse problem. As the NMR Bloch equations determine the motion of nuclear spins in applied magnetic fields, a theoretical study is undertaken to answer the question of how to design magnetic field configurations to achieve these localized excited spin populations. Because of physical constraints in the produc… more
Date: November 1, 1985
Creator: Hasenfeld, A.C.
Partner: UNT Libraries Government Documents Department
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Photovoltaic research opportunities. Final report

Description: The purpose of this study is to identify opportunities for photovoltaic (PV) research projects to capitalize on related but non-PV research. The study is performed under the assumption that a considerable body of ongoing semiconductor research in non-PV areas could be of value to its PV Program and the PV community in general. Research related to III-V compounds, thin films, and crystalline silicon materials is included. Research that is known to be PV-related or sponsored by DOE was excluded f… more
Date: November 19, 1985
Creator: Macaleer, B.; Bowers, J. & Hurlburt, B.
Partner: UNT Libraries Government Documents Department
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Comments on ''theory of dissipative density-gradient-driven turbulence in the tokamak edge'' (Phys. Fluids 28, 1419 (1985))

Description: The author critiques the model of tokamak edge turbulence by P.W. Terry and P.H. Diamond (Phys. Fluids 28, 1419, 1985). The critique includes a discussion of the physical basis, consistency and quantitative accuracy of the Terry-Diamond model. 19 refs. (WRF)
Date: November 1, 1985
Creator: Krommes, John A.
Partner: UNT Libraries Government Documents Department
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Equilibrium fluctuation energy of gyrokinetic plasma

Description: The thermal equilibrium electric field fluctuation energy of the gyrokinetic model of magnetized plasma is computed, and found to be smaller than the well-known result <deltaEdeltaE> (k)/8..pi.. = 1/2T/(1 + (klambda/sub D/)/sup 2/) valid for arbitrarily magnetized plasmas. It is shown that, in a certain sense, the equilibrium electric field energy is minimum in the gyrokinetic regime. 13 refs., 2 figs.
Date: November 1, 1985
Creator: Krommes, J. A.; Lee, W. W. & Oberman, C.
Partner: UNT Libraries Government Documents Department
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Energy Storage Technical and Economic Analysis Program. Annual report

Description: The DOE Energy Storage program over the last several years has evaluated a large number of energy storage technologies, developed promising technologies, and successfully transferred new technologies to the private sector. In FY 1985 specific tasks involved in this area included: Battery Systems Requirements Analysis, Statistical Analysis of Battery Failures, and Research Needs for Corrosion Control and Prevention in Energy Conservation Systems. Battery cost analysis, R and D planning, and tech… more
Date: November 1, 1985
Partner: UNT Libraries Government Documents Department
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Space- and time-resolved bolometry on ZT-40M

Description: Progress in the development of a multichord bolometer system for the Los Alamos Reversed Field Pinch Program is reported. A six-channel system is now operating on ZT-40M. The bolometer element fabrication process and the data analysis are described and some preliminary experimental results presented.
Date: November 1, 1985
Creator: Miller, G.; Ingraham, J.C. & Cowan, R.
Partner: UNT Libraries Government Documents Department
open access

Modeling of complex melting and solidification behavior in laser-irradiated materials (a description and users guide to the LASER8 computer program)

Description: The conceptual foundation of a computational model and a computer program based on it have been developed for treating various aspects of the complex melting and solidification behavior observed in pulsed laser-irradiated materials. A particularly important feature of the modeling is the capability of allowing melting and solidification to occur at temperatures other than the thermodynamic phase change temperatures. As a result, interfacial undercooling and overheating can be introduced and var… more
Date: November 1, 1985
Creator: Geist, G. A. & Wood, R. F.
Partner: UNT Libraries Government Documents Department
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Assessment of potential wood supply for intermediate scale thermoconversion facilities, Tasks I, II, III

Description: The Department of Energy's Biomass Thermochemical Conversion Program has been concerned with the potential of wood biomass to contribute to the Nation's energy supply. One of the factors inhibiting the selection of wood biomass for energy by non-forest industries, especially by those requiring large quantities (500 to 2000 green tons per day), is concern with adequate fuel supply in terms of both a supply system and an adequate resource base. With respect to the latter, this report looks at the… more
Date: November 1, 1985
Partner: UNT Libraries Government Documents Department
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Experimental study of neutron noise with criticality safety applications in mind

Description: A study has been conducted on the statistics of detected neutrons that leaked from four subcritical reflected, enriched-uranium assemblies, to explore the feasibility of developing a criticality warning system based on neutron noise analysis. Studies were conducted on three possible discriminators, i.e., three signatures that might be used to discriminate among assemblies of various multiplications. The noise analysis techniques studied performed well enough in deeply subcritical situations to … more
Date: November 1, 1985
Creator: Barnett, C. S.
Partner: UNT Libraries Government Documents Department
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Coupling impedance and energy loss with magnet laminations

Description: The purpose of this note is to review the calculation of longitudinal coupling impedance for the Fermilab Booster and to estimte the energy loss in the magnet laminations.
Date: November 1, 1985
Creator: Gluckstern, R.
Partner: UNT Libraries Government Documents Department
open access

Confirming LEU in an LFUA environment

Description: A standard sequential procedure is adapted to a limited-frequency unannounced access (LFUA) inspection problem, where uranium enrichment is monitored using nondestructive assay instrumentation. If the enrichment is in the low-enriched uranium (LEU) range, rapid confirmation to that effect is provided under anticipated measurement conditions. Decision thresholds are derived based on the required confidence level in an LEU confirmation. Also, the procedure is easily automated and is such that the… more
Date: November 1, 1985
Creator: Picard, R. R.
Partner: UNT Libraries Government Documents Department
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Assessment of the application of the sputtering process to beryllium for hardening optical coatings

Description: Two principal deposition processes are compared for the case of depositing 1 to 2 ..mu..m beryllium on fused-silica substrates. While the evaporation-deposition process offers advantages such as higher deposition rate, purification of the evaporant and efficient use of masks, the sputter-deposition is more versatile, and therefore more effective, in varying and controlling the microstructure of the deposits. The versatility comes about because the latter process has five major operational param… more
Date: November 11, 1985
Creator: Chen, C.W. & Alford, C.S.
Partner: UNT Libraries Government Documents Department
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Physical processes in collapse driven supernova

Description: A model of the supernova explosion is discussed. The method of neutrino transport is discussed, since the explosive mechanism depends on neutrino heating of the material behind the accretion shock. The core region of these exploding stars becomes unstable to convective motions during the supernova evolution. Convective mixing allows more neutrinos to escape from under the neutrinosphere, and thus increases the amount of heating by neutrinos. An approximate method of incorporating convection is … more
Date: November 1, 1985
Creator: Mayle, R.W.
Partner: UNT Libraries Government Documents Department
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Malignant melanoma at a scientific laboratory

Description: The general consensus of the seven reviewers is that occupational exposures at Lawrence Livermore National Laboratory have not been established as a causal factor for the observed excess of malignant melanoma. Several observations support the impression that some or all of the observed melanoma excess may be attributable to intense surveillance and enhanced detection of early stage melanoma lesions. Since the incidence of melanomas among Laboratory employees has not diminished, an early harvest… more
Date: November 15, 1985
Creator: Shy, C.M.; Checkoway, H. & Marshall, E.G.
Partner: UNT Libraries Government Documents Department
open access

Low-n shear Alfven spectra in axisymmetric toroidal plasmas

Description: In toroidal plasmas, the toroidal magnetic field is nonuniform over a magnetic surface and causes coupling of different poloidal harmonics. It is shown both analytically and numerically that the toroidicity not only breaks up the shear Alfven continuous spectrum, but also creates new, discrete, toroidicity-induced shear Alfven eigenmodes with frequencies inside the continuum gaps. Potential applications of the low-n toroidicity-induced shear Alfven eigenmodes on plasma heating and instabilities… more
Date: November 1, 1985
Creator: Cheng, C. Z. & Chance, M. S.
Partner: UNT Libraries Government Documents Department
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