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Charge distributions for radioactive aerosols in a bipolar atmosphere permeated by an electric field

Description: Steady-state charge distributions are obtained for radioactive aerosol particles in bipolar ionized atmospheres with concentrations of 10/sup 2/ to 10/sup 8/ ions/cm/sup 3/. Ion--particle attachment is based on a diffusion--conduction model with unequal ion mobilities. Asymptotic formulas for charge distributions are derived from charge transfer rate equations. Cases include low and high specific activities with weak and strong electric fields. Mean charge and variance are obtained for Poisson … more
Date: June 19, 1978
Creator: Mead, J. E.
Item Type: Refine your search to only Report
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Classification of gauge groups for unified weak and electromagnetic interactions. UR-654. [Quarks, Lie group]

Description: General structure of the gauge group C underlying the unified weak and electromagnetic interactions, assuming that G is compact and that all quarks have only electric charges 2/3 and -1/3. Then, it is proven that G cannot contain any exceptional Lie groups G/sub 2/, F/sub 4/, E/sub 6/, E/sub 7/, and E/sub 8/ as its factor. Moreover, the underlying representations for quark multiplets to be used must be one of fundamental representations for each component simple Lie group contained as a factor … more
Date: April 19, 1978
Creator: Okubo, S.
Item Type: Refine your search to only Report
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Conceptual design of the field-reversed mirror reactor

Description: For this reactor a reference case conceptual design was developed in some detail. The parameters of the design result partly from somewhat arbitrary physics assumptions and partly from optimization procedures. Two of the assumptions--that only 10% of the alpha-particle energy is deposited in the plasma and that particle confinement scales with the ion-ion collision time--may prove to be overly conservative. A number of possible start-up scenarios for the field-reversed plasmas were considered, … more
Date: May 19, 1978
Creator: Carlson, G. A.; Condit, W. C.; Devoto, R. S.; Fink, J. H.; Hanson, J. D.; Neef, W. S. et al.
Item Type: Refine your search to only Report
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Development of an actively modelocked and Q-switched oscillator for laser fusion program at LLL

Description: A method was developed that allows the mode-locking process to go to its steady state condition before the laser is Q-switched. This is done by pumping the laser quasi-cw for about 5 ms. During this time, the loss in the Q-switch is such that the laser will just slightly go above threshold. The active modulator is on during this time, and the laser oscillates quasi-cw for a period long enough to obtain stable transform-limited short pulses. At the end of this prelase period, the laser is Q-swit… more
Date: July 19, 1978
Creator: Kuizenga, D.J.
Item Type: Refine your search to only Article
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Development of ultrafiltration and inorganic adsorbents for reducing volumes of low-level and intermediate-level liquid waste, April--June 1978

Description: A series of runs was performed in which waste processing facility influent was spiked with americium-241, neptunium-237, and uranium-233 and run through the ultrafiltration and reverse osmosis (RO) units. The results of these experiments show that the ultrafiltration membranes are ionic dependent, whereas the RO unit is not. Membrane irradiation studies have been started. Continuous run parameters are being verified through a series of experiments. The small laboratory column tests were continu… more
Date: July 19, 1978
Creator: Herald, W. R. & Roberts, R. C.
Item Type: Refine your search to only Report
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Diagnostics for the laser fusion program: plasma physics on the scale of microns and picoseconds

Description: Laser induced fusion is the forerunner of a class of inertial confinement schemes in which hydrogen isotopes are heated to thermonuclear conditions in a very short period. The process is characterized by such short time scales that fuel confinement is achieved through its' own finite mass and expansion velocity, approaching 1 ..mu..m/psec for ignition temperatures of order 10 keV (10/sup 8/ /sup 0/K). With current laser powers limited to several terrawatts one readily estimates, on the basis of… more
Date: May 19, 1978
Creator: Attwood, D.T.
Item Type: Refine your search to only Article
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Electron-beam braze welding of beryllium

Description: Electron-beam braze welds were made in beryllium by using less than the recommended amount of aluminum filler metal. The welds exhibited a tendency to form microcracks prior to the termination of solidification; however, these microcracks were healed by the backfilling action of the aluminum/beryllium eutectic present in the fusion zone. Adverse effects attributable to the prior microcracking condition were not found.
Date: September 19, 1978
Creator: Perkins, M. A.
Item Type: Refine your search to only Report
open access

Electron cyclotron resonance heating of tandem mirrors

Description: Heating electrons by microwave power near either the electron cyclotron frequency or its harmonic is analyzed in some detail. The purpose of this study is to determine whether electrons in current or future mirror devices could be heated by electromagnetic waves in this frequency range. Absorption lengths, accessibility conditions, and appropriate polarization are among the concerns studied. It is found that the Tandem Mirror Experiment (TMX) may efficiently be heated by the extraordinary mode … more
Date: December 19, 1978
Creator: Porkolab, M.
Item Type: Refine your search to only Report
open access

Evaluation of laser welding techniques for hydrogen transmission. Progress report, April 1, 1978--April 30, 1978

Description: Machining of the A106B GTA and EB welded specimens was completed. Laser welding of the AISI 304L and ASTM A106B materials is continuing. Tensile testing of the ASTM A106B EB welded specimens was initiated and completed. Testing of the ASTM A106B EB welded material indicated generally lower ductility than the parent material. Low-cycle fatigue testing of the ASTM A106B material in 13.8 MPa hydrogen indicates reductions in mean life of approximately 50 and 27% due to the GTA and EB welding respec… more
Date: May 19, 1978
Creator: Mucci, J.
Item Type: Refine your search to only Report
open access

Genetic recombination in mammalian cells in culture. Progress report, May 1977--April 1978

Description: Two approaches were made to studies on genetic recombination in Chinese hamster cells: cytogenetics and the synthesis of a hybrid cell line containing two noncomplementing nutritional mutants, presumably in the same cistron, that can be used to detect crossing over to produce nutritional independence. The cytogenetic approach was used to characterize existing mutants and to study new mutants. It is also being used to characterize the parents of the hybrids and the hybrids themselves with a view… more
Date: October 19, 1978
Creator: Morse, M. L.
Item Type: Refine your search to only Report
open access

Geotechnical Assessment and Instrumentation Needs for Nuclear Waste Isolation in Crystalline and Argillaceous Rocks Symposium

Description: Today there exists in the United States a large volume of nuclear wastes that result from both military and commercial activities. The United States has to date placed major emphasis on disposal in only one rock type--salt--whereas other nations have considered other rock types, such as granite in England and Sweden and clays in Belgium. No comprehensive evaluation of isolation in rocks other than salt has been made in the United States, and it is most appropriate that other rock types be evalu… more
Date: December 19, 1978
Creator: Authors, Various
Item Type: Refine your search to only Article
open access

Industrial Sector Technology Use Model (ISTUM): industrial energy use in the United States, 1974-2000. Volume 1. Primary model documentation. Book 1: Chapters I, II, and III

Description: The model is designed to predict the commercial-market penetration of various energy technologies in the industrial sector out to the year 2000. The model represents the refinement and further development of the Industrial Sector Model developed for the Market Oriented Program Planning Study task force in 1977. The model assesses the comparative economic competitiveness of each technology and then uses these assessments to project each technology's anticipated market penetration. The introducto… more
Date: June 19, 1978
Creator: Bohn, R.E. & Herod, J.S.
Item Type: Refine your search to only Report
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Industrial Sector Technology Use Model (ISTUM): industrial energy use in the United States, 1974-2000. Volume 1: primary model documentation, Book 2, Chapters IV, V, VI, and VII

Description: The Industrial Sector Technology Use Model provides a single framework for integrating all of the information and analysis into a set of predictions of industrial energy use. Given this volume of information which must be considered, this requires a set of computerized engineering-economic models. The design of these models is the subject of Chapter IV. The environmental factors in ISTUM are developed and presented in Chapter V. Chapter VI discusses the work accomplished by DATA Resources, Inc.… more
Date: June 19, 1978
Creator: Bohn, R.E. & Herod, J.S.
Item Type: Refine your search to only Report
open access

Industrial Sector Technology Use Model (ISTUM): industrial energy use in the United States, 1974-2000. Volume 2. Results

Description: This volume, the second of a four-volume report, presents the current status of the Industrial Sector Technology Use Model (ISTUM), an analysis and projection of the use of energy in the industrial sector, developed as a tool to develop insights on the energy future of the US. Volume 1 describes the model logic and primary data inputs of ISTUM. This volume presents the results of the initial base case run of ISTUM. Volumes III and IV discuss in detail the energy demand data inputs and technolog… more
Date: June 19, 1978
Creator: Bohn, R.E. & Herod, J.S.
Item Type: Refine your search to only Report
open access

Industrial Sector Technology Use Model (ISTUM): industrial energy use in the United States, 1974-2000. Volume 3. Appendix on service and fuel demands

Description: Appendix III-1 contains 4 sets of tables describing information included in the ISTUM demand base. The first set of tables describes 1974 fuel use: they disaggregate fuel consumption according to SIC, service sector, and fuel type. The next set show 1974 fuel consumption and service demand estimates and 1980, 1985, 1990, and 2000 service demand forecasts. The next set indicates, for each service sector, the fraction of an industry's service demands that are allocated to each size-load factor ca… more
Date: June 19, 1978
Item Type: Refine your search to only Report
open access

Industrial Sector Technology Use Model (ISTUM): industrial energy use in the United States, 1974-2000. Volume 4. Technology appendix

Description: This volume of the 4-volume ISTUM documentation gives information on the individual technology specifications. The first chapter presents a general overview of the ISTUM technology data bases. It includes an explanation of the data-base printouts and how the separate-cost building blocks are combined to derive an aggregate-technology cost. The remaining chapters document the specific-technology-cost specifications. Boiler technologies (conventional coal steam, conventional natural gas and oil i… more
Date: June 19, 1978
Item Type: Refine your search to only Report
open access

Infinite cloud model of electrification by the precipitation mechanism in the pressence of high rates of ion generation

Description: We have extended a simple, infinite-cloud, precipitation-mechanism model of thundercloud electrification to include effects due to the presence of radioactive aerosol particles. These effects involve ion generation, currents due to motions of ions and charged aerosol particles, and collection of ions and aerosol particles by hydrometeors and cloud droplets. Our conclusion is that an ion-pair generation rate G equal to or greater than 10/sup 12/m/sup -3/s/sup -1/ will prevent significant electri… more
Date: June 19, 1978
Creator: Spangler, John D. & Rosenkilde, C. E.
Item Type: Refine your search to only Report
open access

LOFT pressurizer pressure relief piping system stress analysis and fatigue life report

Description: A stress analysis was performed on the LOFT Pressurizer Pressure Relief System to determine if it met the requirements of the ASME Boiler and Pressure Vessel Code, Section III, 1974 Edition, for Class 1 and Class 2 components. Deadweight, thermal expansion, seismic, design LOCE, and LOCA loads were considered. The results of this analysis indicate that the LOFT pressurizer pressure relief system will comply with Code specifications provided modifications are made to the hanger support configura… more
Date: January 19, 1978
Creator: Muffett, J.W.
Item Type: Refine your search to only Report
open access

Methods and calculations for regional, continental, and global dose assessments from a hypothetical fuel reprocessing facility

Description: The Savannah River Laboratory (SRL) is coordinating an interlaboratory effort to provide, test, and use state-of-the-art methods for calculating the environmental impact to an offsite population from the normal releases of radionuclides during the routine operation of a fuel-reprocessing plant. Results of this effort are the estimated doses to regional, continental, and global populations. Estimates are based upon operation of a hypothetical reprocessing plant at a site in the southeastern Unit… more
Date: March 19, 1978
Creator: Schubert, J. F.; Kern, C. D.; Cooper, R. E. & Watts, J. R.
Item Type: Refine your search to only Article
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