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Adsorption of Activated Nitrogen

Description: The information obtained in this experiment was deduced by measuring the pumping speed as a function of the energy of the incident electrons and as a function of the energy which ions hit the surface.
Date: August 3, 1963
Creator: Donaldson, E E; Winters, H F & Horne, D E
Partner: UNT Libraries Government Documents Department
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A POLARIZED PROTON TARGET

Description: We have successfully conducted a series of experiments involving scattering of high energy pions and protons from a target containing polarized protons. Results of some of these experiments were reported at this conference, and in the literature. Proton polarizations as high as 65% have been measured; the average polarization during sustained data-taking has been typically 45%.
Date: July 3, 1964
Creator: Chamberlain, Owen; Schultz, Claude & Shapiro, Gilbert
Partner: UNT Libraries Government Documents Department
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Geothermal Energy Development

Description: The Nation has embarked on an aggressive program to develop its indigenous resources of geothermal energy. For more than a decade, geothermal energy has been heralded as one of the more promising forms of energy alternate to oil and gas for electric power generation, but during the last fifteen years, the total capacity in the U.S. has reached 502 MWe, about half the size of a single modern nuclear power plant. And yet, the United States, especially its western and Gulf coast states, is believe… more
Date: November 3, 1975
Creator: Kruger, Paul
Partner: UNT Libraries Government Documents Department
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Enhancement of digital images by modeling two-dimensional surfaces

Description: A method of digital image processing is described which can be used to improve the quality of radiographic images. An image is modeled as the sum of background information, details of interest, and noise. The background is then modified in order to enhance the details. 5 figures.
Date: November 3, 1976
Creator: Huebel, J. G. & Myers, G. K.
Partner: UNT Libraries Government Documents Department
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Heat Transfer in Nonisothermal Liquid Injection Experiments in Porous Media

Description: This paper discusses an analysis of the heat transfer phenomena in the bench-scale experiments being carried out in the Stanford Geothermal Program. The basis of this analysis was a series of simplified mathematical models of heat and mass transport in fine-grained porous media. The analysis determined that the thermal capacity of the coreholder system caused heat losses from the core which were not steady at early and medium times. This phenomenon had not been recognized previously. This was i… more
Date: December 3, 1976
Creator: Atkinson, Paul G.
Partner: UNT Libraries Government Documents Department
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Second Workshop Geothermal Reservoir Engineering: Proceedings

Description: The Arab oil embargo of 1973 focused national attention on energy problems. A national focus on development of energy sources alternative to consumption of hydrocarbons led to the initiation of research studies of reservoir engineering of geothermal systems, funded by the National Science Foundation. At that time it appeared that only two significant reservoir engineering studies of geothermal reservoirs had been completed. Many meetings concerning development of geothermal resources were held … more
Date: December 3, 1976
Creator: Kruger, P. & Ramey, H. J., Jr.
Partner: UNT Libraries Government Documents Department
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Structural support system for a superconducting magnet coil

Description: The purpose of the ESCAR (Experimental Superconducting Accelerator Ring) project, now under way at the Lawrence Berkeley Laboratory, is to gather data and experience in the design and operation of a relatively small synchrotron employing superconducting magnets. Such data are essential to ensure that the design of future large accelerators may proceed in a knowledgeable and responsible manner. One of the many engineering problems associated with a superconducting magnet is the design of the coi… more
Date: March 3, 1977
Creator: Meuser, R.B.
Partner: UNT Libraries Government Documents Department
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Multiphoton spectroscopy in heavy elements

Description: Some recently discovered regularities in the spectra of heavy elements which are also applicable to the analysis of the spectra of lighter atoms are described. It is pointed out that stepwise resonant multiphoton methods are irreplaceable tools in the study of high lying states in a complex atomic system. Systematic applications of these methods has permitted regularities to be observed which also hold for the lighter elements. It is noted that greatly increased understanding of the excited sta… more
Date: May 3, 1977
Creator: Solarz, R. W.; Paisner, J. A. & Worden, E. F.
Partner: UNT Libraries Government Documents Department
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Acceleration systems for heavy-ion beams for inertial confinement fusion

Description: The requirements for a heavy-ion demonstration experiment to achieve useful electric power generation through inertial confinement fusion are discussed. (MOW)
Date: October 3, 1977
Creator: Faltens, A.; Judd, D.L. & Keefe, D.
Partner: UNT Libraries Government Documents Department
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Cassette blanket and vacuum building: key elements in fusion reactor maintenance

Description: The integration of two concepts important to fusion power reactors is discussed. The first concept is the vacuum building which improves upon the current fusion reactor designs. The second concept, the use of the cassette blanket within the vacuum building environment, introduces four major improvements in blanket design: cassette blanket module, zoning concept, rectangular blanket concept, and internal tritium recovery. (MHR)
Date: October 3, 1977
Creator: Werner, R.W.
Partner: UNT Libraries Government Documents Department
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Engineering of beam direct conversion for a 120-kV, 1-MW ion beam

Description: Practical systems for beam direct conversion are required to recover the energy from ion beams at high efficiency and at very high beam power densities in the environment of a high-power, neutral-injection system. Such an experiment is now in progress using a 120-kV beam with a maximum total current of 20 A. After neutralization, the H/sup +/ component to be recovered will have a power of approximately 1 MW. A system testing these concepts has been designed and tested at 15 kV, 2 kW in preparat… more
Date: October 3, 1977
Creator: Barr, W. L.; Doggett, J. N.; Hamilton, G. W.; Kinney, J. D. & Moir, R. W.
Partner: UNT Libraries Government Documents Department
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New generation of arc and arc filament power supplies for pulsed neutral beams

Description: The new Tandem Mirror Experiment (TMX) facility at LLL requires that neutral beams operate for pulse lengths between 25 and 100 ms. The inevitable increase in cost over the present 12-ms pulse length capability dictated that a more economical alternative to the pulse forming networks and the transformer-type arc filament power supplies currently in use be found. A study of the various alternatives and design requirements revealed that battery banks are the most economical alternative. The therm… more
Date: October 3, 1977
Creator: Santamaria, G.T.
Partner: UNT Libraries Government Documents Department
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Atomic data needs for beam transport in gas

Description: Determination of the parameters Z/sub eff/, electrical conductivity, plasma density, and the plasma temperature is essential in the study of heavy ion beam transport in gas. The calculation of these parameters require input from atomic physics. This note is an attempt to make these needs known to atomic physicists.
Date: November 3, 1977
Creator: Yu, S. S.
Partner: UNT Libraries Government Documents Department
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Numerical methods for laser fusion

Description: The LASNEX computer code was developed to study the many interrelated physical processes important in the effort to achieve laser initiated fusion. It has been used to calculate the results of numerous laser plasma experiments and to design targets and determine desirable laser pulse characteristics for future experiments. Some processes, such as hydrodynamics, are well formulated in fundamental equations and can be solved with high accuracy by sophisticated numerical methods. Other processes, … more
Date: November 3, 1977
Creator: Zimmerman, G.B.
Partner: UNT Libraries Government Documents Department
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Propagation of a heavy ion beam in gas-filled reactor

Description: A heavy ion beam traversing a gas-filled reactor is stripped of its electrons along its path. The propagation of the stripping beam with possible associated instabilities has been investigated.
Date: November 3, 1977
Creator: Yu, S. S.; Buchanan, H. L.; Chambers, F. W. & Lee, E. P.
Partner: UNT Libraries Government Documents Department
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Quasi-static drift-tube accelerating structures for low-speed heavy ions

Description: The major attractions of the pulsed drift-tubes are that they are non-resonant structures and that they appear suitable for accelerating a very high current bunch at low energies. The mechanical tolerances of the non-resonant structure are very loose and the cost per meter should be low; the cost of the transport system is expected to be the major cost. The pulse power modulators used to drive the drift-tubes are inexpensive compared to r.f. sources with equivalent peak-power. The longitudinal … more
Date: November 3, 1977
Creator: Faltens, A. & Keefe, D.
Partner: UNT Libraries Government Documents Department
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Effect of simultaneous and sequential detonation on explosive-induced fracture

Description: Tests were conducted in samples of polystyrene to study the effects of detonation delay on explosively induced fracturing. Two explosive charges in separate emplacement holes were fired at several choices of delay. The effect of free surfaces was minimized to make the experiments a study of blast-induced fracturing in a confined mode, i.e., deeply buried. All fractures formed on radial planes with respect to the emplacement holes. Simultaneous firing connected emplacement holes and produced fra… more
Date: March 3, 1978
Creator: Swift, R. P.; Schatz, J. F.; Durham, W. B.; Hearst, J. R. & Kusubov, A.
Partner: UNT Libraries Government Documents Department
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Fabrication of a Tissue-Equivalent Torso Phantom for Intercalibration of in-Vivo Transuranic-Nuclide Counting Facilities

Description: A tissue-equivalent human-torso phantom has been constructed for calibration of the counting systems used for in-vivo measurement of transuranic nuclides. The phantom contains a human male rib cage, removable model organs, and includes tissue-equivalent chest plates that can be placed over the torso to simulate people with a wide range of statures. The organs included are lungs, heart, liver, kidneys, spleen, and tracheo-bronchial lymph nodes. Polyurethane with different concentrations of calci… more
Date: April 3, 1978
Creator: Griffith, R. V.; Dean, P. N.; Anderson, A. L. & Fisher, J. C.
Partner: UNT Libraries Government Documents Department
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Plasma shutter for high power glass laser

Description: We are investigating a retropulse shutter to protect fusion lasers from target reflected light. It is required to project a plasma of 10/sup 21//cm/sup 3/ across a vacuum spatial filter pinhole with a velocity of at least 2 cm/..mu..s. The plasma is produced from a foil which is resistively heated to sublimation, superheated, and magnetically driven across the optical beam path. This paper describes these plasma production processes. A technique has been developed to couple the drive circuit to… more
Date: August 3, 1978
Creator: Bradley, L. P. & Koert, Peter
Partner: UNT Libraries Government Documents Department
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Lawrence Livermore Laboratory x-ray calibration facility

Description: An X-Ray Calibration and Standards Laboratory has been established at the Lawrence Livermore Laboratory to provide x-ray calibrations of various types of x-ray diagnostic equipment presently being utilized. This Laboratory is the outgrowth of many years of involvement in the development of x-ray generation and calibration equipment. X-ray calibrations in a steady state mode are available from 100 eV to 100 keV. Pulsed response and linearity studies as well as radiation damage studies can also b… more
Date: November 3, 1978
Creator: Gaines, J. L.
Partner: UNT Libraries Government Documents Department
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Computer modeling of inelastic wave propagation in porous rock

Description: Computer modeling of wave propagation in porous rock has several important applications. Among them are prediction of fragmentation and permeability changes to be caused by chemical explosions used for in situ resource recovery, and the understanding of nuclear explosion effects such as seismic wave generation, containment, and site hardness. Of interest in all these applications are the distance from the source to which inelastic effects persist and the amount of porosity change within the ine… more
Date: January 3, 1979
Creator: Cheney, J. A. (Univ. of California, Davis); Schatz, J. F. & Snell, C.
Partner: UNT Libraries Government Documents Department
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Method of using in situ porosity measurements to place an upper bound on geothermal reservoir compaction

Description: Placing an upper bound on reservoir compaction requires placing a lower bound on the reservoir effective compaction modulus. Porosity-depth data can be used to find that lower-bound modulus in a young sedimentary basin. Well-log and sample porosity data from a geothermal field in the Imperial Valley, CA, give a lower-bound modulus of 7.7 x 10{sup 3} psi. This modulus is used with pressure drops calculated for a reservoir to determine an upper bound on reservoir compaction. The effects of partia… more
Date: January 3, 1979
Creator: Schatz, J. F.; Kasameyer, P. W. & Cheney, J. A.
Partner: UNT Libraries Government Documents Department
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Quantitative risk in radiation protection standards

Description: Although the overall aim of radiobiology is to understand the biological effects of radiation, it also has the implied practical purpose of developing rational measures for the control of radiation exposure in man. The emphasis in this presentation is to show that the enormous effort expended over the years to develop quantitative dose-effect relationships in biochemical and cellular systems, animals, and human beings now seems to be paying off. The pieces appear to be falling into place, and a… more
Date: January 3, 1979
Creator: Bond, V.P.
Partner: UNT Libraries Government Documents Department
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