20 Matching Results

Search Results

Results: 1 - 20
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.
Partner: UNT Libraries Government Documents Department
open access

High-velocity impact tests involving thin spherical shells of tantalum and 304 stainless steel

Description: This experimental program generated data to improve computer-code modeling of impact phenomena. The improved computation technique will be used to design a fissile-material container able to withstand a 335 m/s impact. The program involved flyer-plate-impact tests using thin shells of annealed 304 stainless steel and annealed tantalum at impact velocities of 28 to 180 m/s. No active instrumentation was used in this study; instead, all data were derived from measurements of test specimens. Pre- … more
Date: August 26, 1977
Creator: Steffan, K. L.
Partner: UNT Libraries Government Documents Department
open access

Expansion potential for existing nuclear power station sites

Description: This report is a preliminary analysis of the expansion potential of the existing nuclear power sites, in particular their potential for development into nuclear energy centers (NECs) of 10 (GW(e) or greater. The analysis is based primarily on matching the most important physical characteristics of a site against the dominating site criteria. Sites reviewed consist mainly of those in the 1974 through 1976 ERDA Nuclear Power Stations listings without regard to the present status of reactor constr… more
Date: September 26, 1977
Creator: Cope, D. F. & Bauman, H. F.
Partner: UNT Libraries Government Documents Department
open access

HOPI: on-line injection optimization program

Description: A method of matching the beam from the 200 MeV linac to the AGS without the necessity of making emittance measurements is presented. An on-line computer program written on the PDP10 computer performs the matching by modifying independently the horizontal and vertical emittance. Experimental results show success with this method, which can be applied to any matching section.
Date: October 26, 1977
Creator: LeMaire, J L
Partner: UNT Libraries Government Documents Department
open access

Mechanical design criteria for continuously operating neutral beams

Description: A schematic of a neutral beam injector is shown. Neutral gas is injected into the ion source, where a discharge ionizes the gas. The ions are drawn from the source by an extractor grid and then accelerated to full energy by the accel grids. After acceleration the ions pass through the neutralizer cell. Once through the neutralizer cell, the beam consists of neutrals and ions. The ions traveling with the beam are space charge neutralized by background electrons. The grid which precedes the direc… more
Date: August 26, 1977
Creator: Vosen, S. R.; Bender, D. J.; Fink, J. H. & Lee, J. D.
Partner: UNT Libraries Government Documents Department
open access

Integrated test vehicle program plan: revision C

Description: This edition dated August 26, 1977, is Revision C of the Integrated Test Vehicle, Program Plan, Phase II - Deliverable Item 2-7-1. The original edition was issued on May 27, 1977. Corrections were made and issued as Proposed Modifications for Integrated Test Vehicle, Program Plan, dated July 8, 1977. For the purpose of documenting changes, the July 8, 1977, version is caled Revision A. The edition dated August 5, 1977, is called Revision B. Each paragraph in this edition is marked to indicate t… more
Date: August 26, 1977
Partner: UNT Libraries Government Documents Department
open access

Metering low-quality steam-water flows

Description: The simultaneous measurement of mass flow rate and quality of low-quality steam-water flows is of primary interest in evaluating and monitoring the flow from geothermal resources. The experience acquired at LLL in attempting to perform such measurements with a double flash (meter-valve-meter) arrangement using orifices and venturis is related. The mass flow correlations proposed in the literature are reviewed and a new correlation based on the energy equation is introduced. The data are present… more
Date: April 26, 1977
Creator: Crowe, C. T. & Weiss, H.
Partner: UNT Libraries Government Documents Department
open access

Seismic analysis of the Nuclear Fuel Service Reprocessing Plant at West Valley, New York: documentation

Description: This material was generated as part of a seismic case review of the NFS Reprocessing Plant. This study is documented in UCRL-52266. The material is divided into two parts: mathematical model information, and ultimate load calculations and comparisons. (DLC)
Date: April 26, 1977
Creator: Murray, R. C.; Nelson, T. A. & Davito, A. M.
Partner: UNT Libraries Government Documents Department
open access

Characteristics of tungsten oxide collectors as a function of activation

Description: Addition of minute amounts of oxygen to a thermionic energy converter results in a significant performance improvement. The presence of oxygen reduces the collector work function and decreases the cesium pressure required to obtain a given current density from the emitter. In addition, oxygen additive diodes have the practical benefits of increased interelectrode spacing and improving converter power density and efficiency with polycrystalline electrodes. The motivation for the studies describe… more
Date: May 26, 1977
Creator: Balestra, C. L. & Wang, C.
Partner: UNT Libraries Government Documents Department
open access

Improved lower limits on neutral fermion masses

Description: Present lower limits on the mass of a neutral fermion N coupled with full strength to an electron via the right-handed weak current are set only by the absence of the decay K/sup +/ ..-->.. Ne/sup +/: m(N) approximately greater than 0.5 GeV/c/sup 2/. It is shown that searches for the decays tau ..-->.. ..nu../sub tau/Ne or F ..-->.. Ne, followed by N ..-->.. e..pi.., can raise the lower bound on m(N) to well over 1 GeV/c/sup 2/ if no signal is seen in present or soon-to-be-acquired data. Estima… more
Date: April 26, 1977
Creator: Rosner, J. L.
Partner: UNT Libraries Government Documents Department
open access

Conceptual design of a 400-GeV version of ISABELLE

Description: A conceptual design report is given for 400 x 400 GeV proton-proton storage rings. A facility is described with twice the energy capability of the recently proposed ISABELLE. The basic accelerator lattice was modified so that the circumference of the magnet rings can be increased substantially without an increase in the transition energy. Each 400 GeV ring uses superconducting magnets of the type described in the ISABELLE Proposal, but energized to 50 kG. Other technical features are not signif… more
Date: April 26, 1977
Partner: UNT Libraries Government Documents Department
open access

Fabrication procedure for the adiabatic surface thermometer. [Uses differential thermocouple and heater]

Description: A special vacuum version of an adiabatic surface thermometer for automatically controlling a critical temperature-time cycle of a production vacuum-brazing process is described. This thermometer touches the surface and uses a differential thermocouple and heater to measure surface temperature without heat flow, thereby minimizing large errors caused by conduction losses common to conventional spring-loaded thermocouples. Some important advantages of our design for vacuum chamber use are: contin… more
Date: April 26, 1977
Creator: Dittbenner, G. R. & Freynik, H. S. Jr.
Partner: UNT Libraries Government Documents Department
open access

Multigroup constants for charged particle elastic nuclear (plus interference) scattering of light isotopes. [Reaction rates, transfer matrices, tables]

Description: Multi-group averaged reaction rates and transfer matrices were calculated for charged particle induced elastic nuclear (plus interference) scattering. Results are presented using a ten group structure for all twenty-five permutations of projectile and target for the following charged particles: p, d, t, /sup 3/He and alpha. Transfer matrices are presented in a simplified form for both incident projectile and the knock-ons; these matrices explicitly conserve energy.
Date: August 26, 1977
Creator: Cullen, D. E. & Perkins, S. T.
Partner: UNT Libraries Government Documents Department
open access

Some rate and modeling studies on the use of iron--titanium hydride as an energy storage medium for electric utility companies

Description: Dynamic tests and modeling studies were made on the chemical-energy-storage portion of an electrical energy conversion and storage system proposed for leveling the load of an electric utility company. The concept utilizes off-peak power to produce hydrogen by electrolyzing water, storing the hydrogen as iron-titanium hydride, FeTiH/sub x/, and subsequently releasing the hydrogen to a fuel cell where the reaction with air generates electrical power. The hydrogen storage portion of the system was… more
Date: April 26, 1977
Creator: Strckland, G & Yu, W S
Partner: UNT Libraries Government Documents Department
open access

Web-dendritic ribbon growth. Quarterly report, January 1, 1977--March 31, 1977

Description: This is a report of the sixth quarter's work on the web-dendritic ribbon growth process at the University of South Carolina. The goal of the program is to develop a multivariate semi-empirical computer model for use in understanding the web-dendritic process and defining the basic limitations of the process with particular regard to the growth rate and width. A brief description of the work carried-out and the results achieved during the past quarter are given.
Date: April 26, 1977
Creator: Hilborn, R. B. Jr. & Faust, J. W. Jr.
Partner: UNT Libraries Government Documents Department
open access

Proposed quality assurance manual for the Office of Waste Isolation

Description: The manual provides guidelines for assuring safe and reliable siting, design, procurement and construction, operation, and decommissioning of a radioactive waste repository. The organization of the program is given and the program itself is defined. The program includes the site evaluation, site selection, design, procurement, fabrication, installation, and testing of any system or component that is safety related. It also included all necessary documentation and auditing. (JSR)
Date: September 26, 1977
Partner: UNT Libraries Government Documents Department
Back to Top of Screen