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Profile modification by the ponderomotive force in spherical targets

Description: Experiments have been performed by LLL which indicate a definite density profile steepening. One possible mechanism for this effect is the ponderomotive force. LASNEX has been modified to include the light momentum deposition in the form rho dv/dt = -nabla P - nabla(radical epsilon + radical 1/epsilon) I/2c. Results will be presented from numerical simulations on spherical glass targets at laser intensities from 10/sup 14/ to 10/sup 16/ watts/cm/sup 2/. Emphasis is placed on the nature of the d… more
Date: October 26, 1977
Creator: Larsen, J. T. & Harte, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Exploding pusher targets for the SHIVA laser system

Description: The first targets for the 20 TW SHIVA laser system were designed. They are simple glass micro-balloons, approximately 300 ..mu..m in diameter and 2 ..mu..m thick, filled with D-T gas. Using LASNEX, whose model physics was utilized successfully for ARGUS targets, we optimize for both gain and yield. The target behaves as an exploding pusher. Different simple analytic models for the physics of this mode are presented, and are tested by comparing their scaling predictions, at constant absorbed pow… more
Date: September 26, 1977
Creator: Rosen, M. D.; Larsen, J. T. & Nuckolls, J. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Regulatable elements in the high-level waste management program

Description: Regulatable elements of a deep geological nuclear waste isolation system are those characteristics of a candidate system which need to be specified to achieve control of its performance. This report identifies the regulatable elements with respect to waste form, repository design, site suitability, and the modeling and decision analysis processes. Regulatable elements in each section are listed and described briefly as they affect the short-term and long-term performance of a deep geological re… more
Date: December 26, 1979
Creator: Oakley, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Use of a General Nonlinear Least-Squares Curve Fitting Program With Nonclosed Form Relationships. [GNLS, in FORTRAN for CDC Computers]

Description: A use for GNLS, a general nonlinear least-squares curve fitting program, is presented. In this use GNLS determines a set of best parameters for relationships that cannot be written in closed form. This program can be useful for experimenters who need to determine experimental parameters by fitting nonclosed-form relationships to experimental data. Two examples are given to indicate how GNLS can be used for this type of problem. 11 figures.
Date: December 26, 1979
Creator: Abey, A. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Numerical study of boundary layer injection as a scale control method

Description: A boundary layer injection method of controlling scale-buildup in geothermal two-phase flow nozzles is studied. The object of this study is to set an upper limit on the ratio of the injected mass flow rate to the free stream mass flow rate that is necessary to isolate the scale carrying free stream flow from the nozzle wall. In order to develop a numerical model of the boundary layer flow, assumptions are made which reduce the results to order of magnitude approximations. Two configurations of … more
Date: September 26, 1975
Creator: Feiereisen, W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Growth of molten core debris pools in concrete. Part II. A. Pool growth in composite beds; B. Effect of overlaying steel layers. Final report, March 1, 1978-September 30, 1979. [LMFBR]

Description: The heat and mass transfer processes taking place in molten core debris/concrete systems have been experimentally investigated. Two types of experiments have been conducted. The first experiment simulates the growth of a molten debris pool in a composite sacrificial bed. This experiment models debris pool growth in an inner, low-melting point, sacrificial material zone followed by a melting attack on the concrete bed. The purpose of the inner zone is to quickly melt and dilute the debris pool s… more
Date: December 26, 1979
Creator: Abdel-Khalik, S I
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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
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.
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Studies in Development Immunogenetics. Annual Progress Report

Description: This contract provides the research support for a group concerned with a relatively large range of problems. The integrating thread that runs through it is that of an interest in development and its genetic regulation, mainly in complex organisms and with an emphasis on the immune system as a model for developmental analysis and as a tool for following the development of other systems, especially the brain. It includes studies of biochemical genetics, primarily from a developmental viewpoint an… more
Date: March 26, 1975
Creator: Owen, R. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Progress report for the US Department of Energy, December 1, 1978-October 31, 1979

Description: This progress report presents papers dealing with the distribution of dissolved and particulate carbon in the oceans as it relates to the global carbon cycle. Also presented are papers concerning global climate and its relationship with carbon dioxide levels in the atmosphere. Items within the scope of EDB are entered individually. (ACR)
Date: October 26, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

North Stanley Polymer Demonstration Project. First annual report

Description: The objective of the project is to demonstrate the efficiency and economics of recovering tertiary oil from a highly heterogenous reservoir (which has been successfully waterflooded, but is nearing the economic limit) by injecting a polymer slug of tapered concentrations to improve the sweep efficiency of the reservoir. In preparation for the injection of polymer, a major review of the mechanical condition of all producing and injection wells prompted a number of remedial workovers. As a preven… more
Date: July 26, 1976
Item Type: Refine your search to only Report
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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

[Alumni Awards Luncheon, April 26, 1975]

Description: Photograph from the Alumni Awards Luncheon, Saturday April 26, 1975 at the Denton Country Club. From left: Tom Harpool (North Texas State Teachers College 1939), President of the North Texas State University Alumni Association; Joe Greene (North Texas State University 1966-1969); Dr. Chester A. Newland (North Texas State College 1954); and Larry Jobe (North Texas State College 1961). At the luncheon, Greene, Newland, and Jobe were each awarded the Alumni Association Distinguished Alumni Citat… more
Date: April 26, 1975
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections

[Alumni Awards Luncheon, April 26, 1975]

Description: Photograph from the Alumni Awards Luncheon, Saturday April 26, 1975 at the Denton Country Club. Edward V. Smith III (North Texas State College 1960) (standing, right), is seen receiving the Outstanding Alumni Service Award from Dr. Jim Granberry (North Texas State College 1958), Master of Ceremonies for the luncheon. Seated to left of Dr. Granberry is Edwina Granberry.
Date: April 26, 1975
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections

[Alumni Awards Luncheon, April 26, 1975]

Description: Photograph from the Alumni Awards Luncheon, Saturday April 26, 1975 at the Denton Country Club. At back left is Joe Greene (North Texas State University 1966-1969) shaking hands with an unidentified male guest at banquet, while speaking with an unidentified female. In foreground right, NTSU president C.C. Nolen, stands with Greene's sons stand at buffet table. At the luncheon, Greene was awarded the Alumni Association Distinguished Alumni Citation. At the time this photograph was taken, for… more
Date: April 26, 1975
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections

[Alumni Awards Luncheon, April 26, 1975]

Description: Photograph from the Alumni Awards Luncheon, Saturday April 26, 1975 at the Denton Country Club. From left: Tom Harpool (North Texas State Teachers College 1939), President of the North Texas State University Alumni Association; Joe Greene (North Texas State University 1966-1969); Dr. Chester A. Newland (North Texas State College 1954); and Larry Jobe (North Texas State College 1961). At the luncheon, Greene, Newland, and Jobe were each awarded the Alumni Association Distinguished Alumni Citat… more
Date: April 26, 1975
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
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