UNT Libraries Government Documents Department - 512 Matching Results

Search Results

Results: 1 - 24 next
open access

25 megajoule energy storage and delivery system for the Shiva laser

Description: A 25 megajoule, 20 kV capacitive energy storage and delivery system has been built and tested for Shiva--a 20 arm, 10 kJ, 20 TW neodymium glass fusion research laser. This system supplies over 3.5 megamperes to xenon flashlamps for optical pumping of the laser amplifier. About 15% of the energy is used to establish magnetic fields within Faraday rotator glass. A digital based control and diagnostics scheme is employed through the entire pulse power system. This scheme utilizes a distributed dig… more
Date: October 18, 1977
Creator: Gagnon, W.L.; Rupert, P. R.; Berkbigler, L.; Carder, B. M.; Gritton, D. G.; Holloway, R. W. et al.
Item Type: Refine your search to only Article
open access

150-m measurement of 0. 880- to 100. 0-keV neutron transmissions through four samples of /sup 238/U

Description: In order to study the /sup 238/U + n total cross section, neutron transmissions through 0.076-, 0.254-, 1.080-, and 3.620-cm-thick samples of isotopically enriched /sup 238/U have been measured from 0.880 to 100.0 keV using a time-of-flight technique over a path length of 150 meters with the ORELA pulsed source and a 13-mm-thick Li-glass detector. The measurement is described in detail and both a listing and figures of the resulting transmissions are given. An absolute energy scale accurate to … more
Date: October 1, 1977
Creator: Olsen, D. K.; de Saussure, G.; Perez, R. B.; Difilippo, F. C.; Ingle, R. W. & Weaver, H.
Item Type: Refine your search to only Report
open access

880 nanosecond particle in cell mover for the CDC 7600

Description: A very fast computational method of moving particles for one dimensional electrostatic plasma simulations using integer arithmetic is described. The cloud in cell method forms the basis of this technique. This paper is in the form of a compass compilable subroutine with comments and examples describing methods of using an entirely integer representation to gain up to an order of magnitude increase in speed over equivalent floating point Fortran coding. Integer arithmetic has several advantages … more
Date: October 4, 1977
Creator: Estabrook, K. & Tull, J. E.
Item Type: Refine your search to only Report
open access

1976 Energy Resource Alternatives II Competition. Final report

Description: Descriptions of all the entries in the competition are presented. Competition rules and judging procedures are described. Entries consisted of team efforts from colleges and universities. The competition called for the student teams to develop means for producing electrical power sufficient to meet the needs of a single family home, using an energy source other than oil or natural gas. The electric power produced had to be economically realistic when compared to present energy sources.
Date: October 1, 1977
Creator: McGill, Robert A.; Iannucilli, Mary; Marshal, James; Sununu, John H.; Eschbach, Joseph E.; Anson, Jon et al.
Item Type: Refine your search to only Report
open access

2660 A holographic interferometry of laser produced plasmas from tilted disk targets

Description: Using double exposure holographic interferometry, an investigation has been made of the Nd laser produced plasmas surrounding disk targets irradiated at different angles of incidence. Measurements have produced a detailed description of the plasma profile necessary for realistic simulations of resonance absorption. A 2660A 15 psec probe pulse is produced by frequency quadrupling a fraction of the main Nd laser pulse from the Janus laser. F/1 and f/10 lenses were utilized to irradiate the target… more
Date: October 21, 1977
Creator: Auerbach, J.M.; Attwood, D.T.; Lee, P.H.Y. & Sweeney, D.W.
Item Type: Refine your search to only Article
open access

Acceleration of Partially Stripped Ions at the Bevalac

Description: We present results of the first attempts to accelerate partially stripped heavy ions in the Bevatron. Experiments were performed for hydrogen-like argon and neon ions, and, although the survival time of these ions in the 10{sup -7} torr Bevatron vacuum was not sufficient to achieve full energy, valuable charge-changing cross section information was obtained.
Date: October 1, 1977
Creator: Alonso, J.; Force, R.; Tekawa, M. & Grunder, H.
Item Type: Refine your search to only Article
open access

Acceptable TRU packaging for interim storage and/or terminal isolation

Description: The major objective of ERDA Manual Chapter 0511 is responsible technical management of its radioactive wastes. To ensure long term technical management, this DOE responsibility initially begins with the generation of radioactive wastes in all DOE operations and includes all other attributes and parameters (waste processing, packaging, shipping and storage) over the lifetime of the radionuclides. Close examination of the entire waste management cycle clearly indicates that one of the most import… more
Date: October 31, 1977
Creator: Kokenge, B.R.
Item Type: Refine your search to only Report
open access

Accuracy of CDC 6600/7600 Fortran library functions

Description: This report documents the results of tests of accuracy performed on Fortran library functions corresponding to version 3.0 (PSR 326) of the Fortran Extended Library and version V327 of the CDC 6600 SCOPE 3.3 operating system; version 4.6 (PSR 439) of the Fortran Extended Library and the NOS operating system; and version 4.6 (level 420) of the Fortran extended Library and level 221C of the 7000 SCOPE 2.1 operating system. It is emphasized that corresponding routines of the same name in different… more
Date: October 1, 1977
Creator: Bailey, C. B. & Jones, R. E.
Item Type: Refine your search to only Report
open access

Accuracy of wind power estimates

Description: Several aspects of power estimation techniques for wind energy conversion systems are studied. The sampling rate at which data are collected, ranging from once every 2 minutes to once every 3 hours, does not appear to significantly affect the average power for recording periods of one season. Increased averaging times produce small underestimates (less than 10 percent) of available power. The Rayleigh and Weibull distributions both give poor estimates of power for low mean wind speed situations… more
Date: October 1, 1977
Creator: Doran, J. C.; Bates, J. A.; Liddell, P. J. & Fox, T. D.
Item Type: Refine your search to only Report
open access

Acetic acid production from marine algae. Progress report No. 1, July 1--September 30, 1977

Description: Progress is reported in research designed to develop an economically competitive process for producing acetic acid from biomass for the purpose of sparing petroleum for other uses, to evaluate marine algae as a potential source of biomass, and to document the feasibility of running fermentations in fixed packed bed fermenters. It was demonstrated that marine algae can be fermented to acetic acid. Initial rates of up to 168 meq/1 day were observed. These rates are substantially in excess of the … more
Date: October 14, 1977
Creator: Sanderson, J.E.; Augenstein, D.C. & Wise, D.L.
Item Type: Refine your search to only Report
open access

Actinide Partitioning and Transmutation Program. Progress report, April 1--June 30, 1977

Description: Experimental work on the 16 tasks comprising the Actinide Partitioning and Transmutation Program was continued. Summaries of work are given on Purex Process modifications, actinide recovery, Am-Cm recovery, radiation effects on ion exchangers, LMFBR transmutation studies, thermal reactor transmutation studies, fuel cycle studies, and partitioning-transmutation evaluation. (JRD)
Date: October 1, 1977
Creator: Tedder, D. W. & Blomeke, J. O.
Item Type: Refine your search to only Report
open access

Active sites for hydrocarbon catalysis on metal surfaces

Description: There is a great deal of experimental evidence associating selective bond breaking ability with low coordination number surface sites on transition metal surfaces. Atomic steps break H-H and C-H bonds efficiently while kinks in the steps are required for additional C-C and C=O bond scissions. The blockage of some of the ''active sites'' yields the reaction selectivity commonly observed as a result of alloying or upon introduction of certain promoters. Another important parameter in controlling … more
Date: October 18, 1977
Creator: Somorjai, G.A.
Item Type: Refine your search to only Article
open access

Adaptation of jet accumulation techniques for enhanced rock cutting

Description: The velocity of water jet flow can be increased when the jet impacts a target material or another water jet. A theory describing such augmentation in terms of velocity, mass, and energy change is considered. The phenomena is sensitive to jet structure and the jet velocity profile. Jet velocity profiles do not remain constant over great distances from the nozzle, and ultimately disrupt into droplets. Within the droplet the profile is more regular and the velocity constant. The theory is extended… more
Date: October 26, 1977
Creator: Mazurkiewicz, M.; Barker, C.R. & Summers, D.A.
Item Type: Refine your search to only Report
open access

Advanced design and economic considerations for commercial geothermal power plants at Heber and Niland, California. Final report

Description: Two separate studies, involving advanced design and economic considerations for commercial geothermal power plants using liquid-dominated hydrothermal resources, are presented. In the first study, the effects on design, capital cost, and bus bar electric energy production cost caused by an anticipated decline in available geothermal fluid temperature over the lifetime of power plants are described. A two-stage, flashed-steam energy conversion process was used for the conceptual design of the po… more
Date: October 1, 1977
Item Type: Refine your search to only Report
open access

Advanced development of fine coal desulfurization and recovery technology. Quarterly technical progress report, April 1, 1977--June 30, 1977

Description: The improvement and technical development of several promising methods for desulfurizing and recovering fine coal were continued. These methods include froth flotation, selective oil agglomeration, pelletization, and a chemical desulfurization process which involves leaching fine coal with a hot dilute solution of sodium carbonate containing dissolved oxygen or air under pressure. Numerous laboratory experiments and measurements were carried out to advance the state of this technology. It was s… more
Date: October 1, 1977
Creator: Wheelock, T. D.; Greer, R. T.; Markuszewski, R. & Fisher, R. W.
Item Type: Refine your search to only Report
open access

Aerial gamma ray and magnetic survey, Van Horn and Pecos Quadrangles, Texas. Volume I. Final report

Description: A high sensitivity, airborne radiometric and magnetic survey of portions of the Big Bend, Texas area was conducted. The project area comprising the Van Horn and Pecos 1:250,000 NTMS sheets, consists of approximately 16,400 square miles. A total of 6,666 line miles of high sensitivity radiometric and magnetic data were collected. Traverse lines were flown at a spacing of 3.125 miles in an east/west direction with tie lines flown in a north/south direction at a 18.375 miles separation. All data w… more
Date: October 1, 1977
Item Type: Refine your search to only Report
open access

AITRAC: Augmented Interactive Transient Radiation Analysis by Computer. User's information manual

Description: AITRAC is a program designed for on-line, interactive, DC, and transient analysis of electronic circuits. The program solves linear and nonlinear simultaneous equations which characterize the mathematical models used to predict circuit response. The program features 100 external node--200 branch capability; conversional, free-format input language; built-in junction, FET, MOS, and switch models; sparse matrix algorithm with extended-precision H matrix and T vector calculations, for fast and acc… more
Date: October 1, 1977
Item Type: Refine your search to only Report
open access

Algorithm for the computation of nonlinear electron thermal conduction on an arbitrarily shaped, two-dimensional domain

Description: A numerical algorithm is described for computing coupled heat and hydrodynamic flow on an arbitrarily shaped, time-varying domain. The algorithm extends the ICED-ALE method, for the computation of hydrodynamic motion using an arbitrary Eulerian-Lagrangian mesh, to include electron thermal conduction. Appropriate difference equations in conservation form are developed, and the Dufort-Frankel scheme is adapted to advance these equations in time. Results are presented which illustrate the applicat… more
Date: October 1, 1977
Creator: Brackbill, J.U. & Margolin, L.G.
Item Type: Refine your search to only Report
Back to Top of Screen