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Engineering problems in the development of fusion power reactors

Description: This paper reviews current progress in the development of fusion power from the engineering point of view and highlights the most outstanding technical issues which must be resolved. (MOW)
Date: November 2, 1976
Creator: Varljen, T. C.
Partner: UNT Libraries Government Documents Department
open access

Tomography of laser fusion plasmas

Description: Experimental programs exist in a number of laboratories throughout the world to test the feasibility of using powerful laser systems to drive the implosion of hydrogen isotope fuel to thermonuclear burn conditions. In a typical experiment multiple laser beams are focused onto a glass microshell (typically 50 ..mu..m to 200 ..mu..m diameter) filled with an equimolar D-T gas mixture. X-ray and particle emissions from the target provide important information about the hydrodynamic implosion of the… more
Date: August 2, 1977
Creator: Ceglio, N.M.
Partner: UNT Libraries Government Documents Department
open access

Diagnostics developments and applications for laser fusion experiments

Description: Some diagnostics techniques applied to current laser fusion target experiments are reviewed. Specifically, holographic interferometry of target plasmas, coded aperture imaging of thermonuclear alpha-particles and neutron energy spectrum measurements are discussed.
Date: September 2, 1977
Creator: Coleman, L.W.
Partner: UNT Libraries Government Documents Department
open access

Mortality, migration, income, and air pollution: a comparative study

Description: The interrelationships among different demographic factors, specific causes of death, median family income, and estimated air pollution emissions were examined. Using the Medical Data Base (MEDABA) developed at Brookhaven National Laboratory, the entire population of the United States was cross-tabulated by income and emission levels of air pollutants. Path analysis was used to examine a number of patterns and relationships for each age, race, and sex group containing a minimum of 10,000 person… more
Date: June 2, 1978
Creator: Bozzo, S. R.; Novak, K. M.; Galdos, F.; Hakoopian, R. & Hamilton, L. D.
Partner: UNT Libraries Government Documents Department
open access

Solar repowering workshop: a summary report

Description: The workshop was divided into two groups. Group A discussed key issues in the demand for solar thermal technologies; Group B discussed key issues in the supply of solar thermal technologies. Discussion questions prepared prior to the workshop are listed and the responses are summarized. The workshop agenda and the list of participants are included. (MHR)
Date: August 2, 1978
Creator: Nordman, D.
Partner: UNT Libraries Government Documents Department
open access

Automated system for membrane filtration and core tests. [For assessing injectability of geothermal fluids]

Description: An existing manually operated LLL system for obtaining data on injectability of geothermal effluents has been automated. Membrane filters and core samples are exposed to geothermal brine at representative injection pressure and formation confining pressure to study the potential effects of scaling and suspended solids deposition on the performance of injection wells. An electronic controller provides for operation under conditions of either constant differential pressure or constant flow. A dat… more
Date: July 2, 1979
Creator: Hasbrouck, R.T.; Owen, L.B. & Netherton, R.
Partner: UNT Libraries Government Documents Department
open access

Concrete polymer materials as alternate materials of construction for geothermal applications - field test evaluations

Description: A serious problem in the development of geothermal energy is the availability of durable and economical materials of construction for handling hot brine and steam. Hot brine and other aerated geothermal fluids are highly corrosive and they attack most conventional materials of construction. Brookhaven National Laboratory has been investigating the use of concrete polymer materials as alternate materials of construction for geothermal processes. To date, successful field tests have been demonstr… more
Date: February 2, 1979
Creator: Fontana, J.J. & Zeldin, A.
Partner: UNT Libraries Government Documents Department
open access

Assessment of fire hazards in buildings housing fusion energy experiments

Description: A number of materials in and within the proximity of buildings housing fusion energy experiments (FEE) were analyzed for their potential fire hazard. The materials used in this study were mostly: electrical and thermal insulations. The fire hazard of these materials was assessed in terms of their ease of ignition, heat release rate, generation of smoke, and the effect of thermal environment on the combustion behavior. Several fire protection measures for buildings housing the (FEE) projects are… more
Date: May 2, 1978
Creator: Alvares, N. & Lipska, A.
Partner: UNT Libraries Government Documents Department
open access

Toxicity of tritium. [Chronic, low-dose exposure of mice and monkeys]

Description: Among radionuclides of importance in atomic energy, /sup 3/H has relatively low toxicity. The main health and environmental worry is the possibility that significant biological effects may follow from protracted exposure to low concentrations in water. To examine this possible hazard and measure toxicity at low tritium concentrations, chronic exposure studies were done on mice and monkeys. During vulnerable developmental periods animals were exposed to /sup 3/HOH, and mice were exposed also to … more
Date: March 2, 1979
Creator: Dobson, R.L.
Partner: UNT Libraries Government Documents Department
open access

Time-resolved fast-neutron pinhole camera for studying thermonuclear plasmas

Description: A fast-neutron pinhole camera with high detection efficiency and nanosecond time-resolution has been developed and applied to the investigation of the spatial and temporal distributions of DD- and DT-neutrons produced by thermonuclear plasmas. The pinhole consists of a specially designed 1.15 m long copper collimator with an effective aperture of 1 mm diameter. Several different types of spatial resolution detectors have been used at the image plane: (1) a multi-element, scintillation-photomult… more
Date: February 2, 1976
Creator: Bauer, R. W. & Weingart, R. C.
Partner: UNT Libraries Government Documents Department
open access

Electron energy and space charge calculations in reflex diodes

Description: Previously reported Monte Carlo code calculations of the electron energy distributions and the consequent reflex triode characteristics will be presented for two different anode designs. In addition, a generalized formulation of Poisson's equation will be used to examine the virtual cathode side of a reflex diode. The familiar ''resonance'' solution for the reflex triode is again found, but with a different physical interpretation. In the former case the current diverges, but in the virtual cat… more
Date: May 2, 1977
Creator: Shearer, J. W.
Partner: UNT Libraries Government Documents Department
open access

Transaction oriented minicomputer allows flexible design of the controlled materials information system

Description: The design of business data processing applications utilizing minicomputers requires special considerations throughout the development of the systems project. Minicomputer features, capabilities, and limitations must be closely examined prior to the implementation of the design phase. The design requirements of an inventory control minicomputer system currently being installed by the Data Processing Services Department of Lawrence Livermore Laboratory are presented.
Date: April 2, 1976
Creator: Jessen, T. D.
Partner: UNT Libraries Government Documents Department
open access

Challenge in Numerical Software for Microcomputers

Description: Microcomputers are now capable of serious numerical computation using programmed floating-point arithmetic and Basic compilers. Unless numerical software designers for these machines exploit experience gained in providing software for larger machines, history will repeat with the initial spread of treacherous software. This paper discusses good software, especially for the elementary functions, in terms of reliability and robustness. The emphasis. is on insight rather than detailed algorithms, … more
Date: September 2, 1977
Creator: Cody, W J
Partner: UNT Libraries Government Documents Department
open access

Very high energy nuclear collisions: the asymptotic hadron spectrum, anti-nuclei, hyper-nuclei, and quark phase

Description: The possibilities of hadron production are considered. Included are hadrons never to be discovered, relevance of the study, means of production, thermodynamics of hadronic matter, three examples of hadronic spectra, the temperature, composition of the initial fireball, expansion of the fireball, pre-freeze-out radiation, antinuclei, hypernuclei, and the quark phase. 17 references. (JFP)
Date: January 2, 1978
Creator: Glendenning, N.K.
Partner: UNT Libraries Government Documents Department
open access

Neutron spectra from 30-MeV deuterons on a thick beryllium target. [Cross sections]

Description: The neutron spectra produced by bombarding a thick beryllium target with 30-MeV deuterons at the University of California, Davis, cyclotron was measured. These spectra are of interest in studying the effect of neutrons on materials to be used in future fusion reactors. The spectra were inferred from the activation of two sets of detector foils placed at an angle THETA = 0/sup 0/ to the deuteron beam, one immediately behind the beryllium target block, and one 40 mm to the rear. The SAND-II progr… more
Date: May 2, 1977
Creator: Nethaway, D. R.; Van Konynenburg, R. A. & Guinan, M. W.
Partner: UNT Libraries Government Documents Department
open access

Analysis of the fusion-effectiveness of active and passive pulse-stackers

Description: The laser fusion effectiveness of various active and passive pulse-stacking schemes is investigated. Factors considered include efficiency, achievable rise-times, variety in output pulse shapes, simplicity of construction and operation, and compatibility with existing and proposed fusion laser systems. During the research phase of laser-fusion development a particular class of active pulse-stackers should be superior, although a passive system, such as the KMSF pulse-stacker, should be superior… more
Date: August 2, 1976
Creator: Harney, R. C. & Schipper, J. F.
Partner: UNT Libraries Government Documents Department
open access

Studies on antiprotonic atoms

Description: No Description Available.
Date: May 2, 1975
Creator: Eisenstein, R. A.
Partner: UNT Libraries Government Documents Department
open access

Mirror machine program in the USA

Description: As the result of recent experimental progress, theoretical advances, and the emergence of new approaches to the improvement of mirror confinement, the mirror approach has become the principal alternative to the tokamak in the USA magnetic fusion program. Emphasis is now centered on the Tandem Mirror and Field-reversed Mirror Concepts, which theoretically can obtain Q values of five or more. Recent progress in the mirror fusion program includes a series of favorable advances in the 2XIIB experim… more
Date: September 2, 1977
Creator: Coensgen, F. H.
Partner: UNT Libraries Government Documents Department
open access

Considerations on W. -->. hadron jets. [SU(2) x U(1), gauge invariance]

Description: It is pointed out that another way to look for the bosons signal for the identification of the W/sup + -/ and the Z/sup 0/ is through decays to hadronic jets. Although the background is a priori large, the jets may have such distinctive features so as to be recognizable. An SU(2) x U(1) gauge theory with six quarks and six leptons all in left-handed doublets and right-handed singlets is considered.
Date: September 2, 1977
Creator: Williams, P. K.; Chung, S. U.; Flaminio, V.; Paschos, E. A.; Paige, F. E. & Trueman, T. L.
Partner: UNT Libraries Government Documents Department
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