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Fundamental studies of fusion plasmas

Description: Work on ICRF interaction with the edge plasma is reported. ICRF generated convective cells have been established as an important mechanism for influencing edge transport and interaction with the H-mode, and for controlling profiles in the tokamak scrape-off-layer. Power dissipation by rf sheaths has been shown to be significant for some misaligned ICRF and IIBW antenna systems. Near-field antenna sheath work has been extended to the far-field case, important for experiments with low single pass… more
Date: April 27, 1993
Creator: Aamodt, R. E.; Catto, P. J.; D'Ippolito, D. A.; Myra, J. R. & Russell, D. A.
Partner: UNT Libraries Government Documents Department
open access

[Michigan Technological University Pre-Service Teacher Enhancement Program]. [Includes a copy of the Student Guide]

Description: The Michigan Technological University Teacher Education Program received funding from the US Department of Energy for the purpose of providing capable and suitably inclined, MTU Engineering and Science students a chance to explore high school level science and mathematics teaching as a career option. Ten undergraduate students were selected from nominations and were paired with mentor teachers for the study. This report covers the experience of the first ten nominees and their participation in … more
Date: April 27, 1993
Creator: Anderson, C.S. & Yarroch, W.L.
Partner: UNT Libraries Government Documents Department
open access

Mechanisms and genetic control of interspecific crossing barriers in Lycopersicon

Description: This study employs Lycopersicon esculentum and L. pennellii as model systems to study the interspecific reproductive barriers unilateral incongruity (UI), hybrid breakdown and interspecific aberrant ratio syndrome (IARS).
Date: March 27, 1993
Creator: Mutschler, M.A. (Cornell Univ., Ithaca, NY (United States)) & McCormick, S. (Agricultural Research Service, Albany, CA (United States). Plant Gene Expression Center)
Partner: UNT Libraries Government Documents Department
open access

Filament to mandrel gap analysis: Resulting gap from filament winding over a cone-cylinder transition mandrel (reference NMTP NO. 93838)

Description: The composites industry employs a method of high speed continuous reinforcement lay-down called filament winding. This is a process where resin impregnated tows, bundles of filament, are wound over a rotating mandrel. The tows, hereafter referred to as filament, are laid down over the rotating mandrel at a prescribed wind angle. Consider a cylindrical filament winding mandrel with conical features such that the filament is tangent to both the cylinder and the cone simultaneously. A gap is forme… more
Date: October 27, 1993
Creator: Geraghty, P.
Partner: UNT Libraries Government Documents Department
open access

Inventory of Power Plants in the United States, October 1992

Description: The Inventory of Power Plants in the United States is prepared annually by the Survey Management Division, Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), US Department of Energy (DOE). The purpose of this publication is to provide year-end statistics about electric generating units operated by electric utilities in the United States (the 50 States and the District of Columbia). The publication also provides a 10-year outlook of future generating … more
Date: October 27, 1993
Partner: UNT Libraries Government Documents Department
open access

Dual-band infrared (DBIR) imaging inspections of Boeing 737 and KC-135 aircraft panels

Description: We apply dual-band infrared (DBIR) imaging as a dynamic thermal tomography tool for wide area inspection of a Boeing 737 aircraft, and several Boeing KC-135 aircraft panels. Our analyses are discussed in this report. After flash-heating the aircraft skin, we record synchronized DBIR images every 40 ms, from onset to 8 seconds after the heat flash. We analyze selective DBIR image ratios which enhance surface temperature contrast and remove surface-emissivity clutter (from dirt, dents, tape, mark… more
Date: August 27, 1993
Creator: Del Grande, N. K.; Dolan, K. W.; Durbin, P. F.; Gorvad, M. R. & Shapiro, A. B.
Partner: UNT Libraries Government Documents Department
open access

Bench-scale testing of on-line control of column flotation using a novel analyzer. Revised final report, [October 1992--October 1993]: Volume 1

Description: The main advantage of the project is that it allowed PTI to gain knowledge and experience about the proper approach, methods and hardware required to properly optimize and control column flotation performance. Many operational problems were incurred during the project, some of that PTI was able to solve during the project and other that must be overcome as the technology is further developed and commercialized. The key operating problems experienced with the KEN-FLOTE{sup TM} Column that must b… more
Date: October 27, 1993
Partner: UNT Libraries Government Documents Department
open access

Fundamental studies of fusion plasmas. Annual performance report

Description: Work on ICRF interaction with the edge plasma is reported. ICRF generated convective cells have been established as an important mechanism for influencing edge transport and interaction with the H-mode, and for controlling profiles in the tokamak scrape-off-layer. Power dissipation by rf sheaths has been shown to be significant for some misaligned ICRF and IIBW antenna systems. Near-field antenna sheath work has been extended to the far-field case, important for experiments with low single pass… more
Date: April 27, 1993
Creator: Aamodt, R. E.; Catto, P. J.; D`Ippolito, D. A.; Myra, J. R. & Russell, D. A.
Partner: UNT Libraries Government Documents Department
open access

Y-12 development organization technical progress report. Part 4, Assembly technology/compatibility and surveillance period ending September 30, 1993

Description: The Super Collider is a high-energy scientific instrument composed of a 53-mile-long ring of proton accelerators designed to collide protons and evaluate the emanating particles. The Oak Ridge Y-12 Plant is under contract to perform work for the Superconducting Super Collider Laboratory (SSCL) and has been asked to develop manufacturing processes for components of the gammas, electrons, muons (GEM) detector. Three welded subassemblies are involved in the fabrication of these conductors. The sup… more
Date: December 27, 1993
Creator: Northcutt, W. G. Jr.
Partner: UNT Libraries Government Documents Department
open access

Thermodynamic constants for actinide oxides and oxyhydroxides relevant to actinide volatility calculations for thermal oxidation processes

Description: The purpose of this report is to provide input of thermodynamic data on actinide volatilities to EERC for use in their computer code for modeling of metal volatilities in incinerators. It is also anticipated that the data may be documented later in an EPA sponsored ``Metals Bible.`` It should be noted that only upper limits for the volatility of PuO{sub 2}(s) due to PuO{sub 3}(g) and PuO{sub 2}(OH){sub 2}(g) and the volatility of AmO{sub 2} in PuO{sub 2}(s) due to AmO{sub 3}(g) and AmO{sub 2}(O… more
Date: October 27, 1993
Creator: Ebbinghaus, B. B. & Krikorian, O. H.
Partner: UNT Libraries Government Documents Department
open access

Natural gas monthly, July 1993

Description: The Natural Gas Monthly NGM highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas inform… more
Date: July 27, 1993
Partner: UNT Libraries Government Documents Department
open access

Monthly energy review, July 1993

Description: This publication presents information and compiled data on energy sources. The following information is presented: energy overview; energy consumption; petroleum; natural gas; oil and gas resource development; coal; electricity; nuclear energy; energy prices; and international energy.
Date: July 27, 1993
Partner: UNT Libraries Government Documents Department
open access

Cutting and drilling studies using high power visible lasers

Description: High power and radiance laser technologies developed at Lawrence Livermore National Laboratory such as copper-vapor and dye lasers show great promise for material processing tasks. Evaluation of models suggests significant increases in welding, cutting, and drilling capabilities, as well as applications in emerging technologies such as micromachining, surface treatment, and stereolithography. Copper lasers currently operate at 1.8 kW output at approximately three times the diffraction limit and… more
Date: May 27, 1993
Creator: Kautz, D. D.; Dragon, E. P.; Werve, M. E.; Hargrove, R. S. & Warner, B. E.
Partner: UNT Libraries Government Documents Department
open access

Six dimensional tracking simulator for H{sup {minus}} injection in AGS Booster

Description: The effect of Coulomb multipole scattering on the beam emittance is studied with the 6 dimensional injection program ARCHSIM by A. Thiessen. Since the energy loss due to Bhabha scattering is small, the six dimensional simulation can be approximated into transverse 4 dimensional and longitudinal 2 dimensional tracking. The emittance growth agrees well with the multiple scattering theory. The beam loss occurs mainly in the adiabatic capture process in the longitudinal phase space.
Date: April 27, 1993
Creator: Lee, S. Y. & Tepikian, S.
Partner: UNT Libraries Government Documents Department
open access

Laser initiated piston actuator X51-8284-1

Description: This contract is a follow on effort in the development of a laser initiated piston actuator. During the previous contract a miniature piston actuator was developed which had two system related problems. First, during operation of the actuator, combustion gases would escape past the piston shank, overheating the surrounding materials. Secondly, the function of the device seemed to be overly brisant. The purpose of this contract was to improve the performance of the laser initiated piston actuato… more
Date: April 27, 1993
Creator: Spomer, E.
Partner: UNT Libraries Government Documents Department
open access

Stochastic cooling requirements for a muon collider

Description: The most severe limitation to the muon production for a large-energy muon collider is the short time allowed for cooling the beam to dimensions small enough to provide reasonably high luminosity. The limitation is caused by the short lifetime of the particles that, for instance, at the energy of 100 GeV is of only 2.2 ms. Moreover, it appears to be desirable to accelerate the beam quickly, with very short bunches of about a millimeter so it can be made immediately available for the final collis… more
Date: September 27, 1993
Creator: Ruggiero, Alessandro G.
Partner: UNT Libraries Government Documents Department
open access

Six dimensional tracking simulator for H[sup [minus]] injection in AGS Booster

Description: The effect of Coulomb multipole scattering on the beam emittance is studied with the 6 dimensional injection program ARCHSIM by A. Thiessen. Since the energy loss due to Bhabha scattering is small, the six dimensional simulation can be approximated into transverse 4 dimensional and longitudinal 2 dimensional tracking. The emittance growth agrees well with the multiple scattering theory. The beam loss occurs mainly in the adiabatic capture process in the longitudinal phase space.
Date: April 27, 1993
Creator: Lee, S. Y. & Tepikian, S.
Partner: UNT Libraries Government Documents Department
open access

Multi-Function Waste Tank Facility Corrosion Test Report (Phase 1)

Description: This report documents the results of the corrosion tests that were performed to aid in the selection of the construction materials for multi-function waste tanks to be built in the U.S. Department of Energy Hanford Site. Two alloys were tested: 304L and Alloy 20 austenitic stainless steel. The test media were aqueous solutions formulated to represent the extreme of the chemical compositions of waste to be stored in the tanks. The results summerized by alloy are as follows: For 304L the tests sh… more
Date: December 27, 1993
Creator: Carlos, W. C. & Fritz, R. L.
Partner: UNT Libraries Government Documents Department
open access

[Michigan Technological University Pre-Service Teacher Enhancement Program]. Progress performance report

Description: The Michigan Technological University Teacher Education Program received funding from the US Department of Energy for the purpose of providing capable and suitably inclined, MTU Engineering and Science students a chance to explore high school level science and mathematics teaching as a career option. Ten undergraduate students were selected from nominations and were paired with mentor teachers for the study. This report covers the experience of the first ten nominees and their participation in … more
Date: April 27, 1993
Creator: Anderson, C. S. & Yarroch, W. L.
Partner: UNT Libraries Government Documents Department
open access

K{sub effective} calculations for infinite planar square-pitched arrays of waste receptacles

Description: Neutron multiplication factors (k{sub eff}) have been calculated for arrays of three standard sizes of waste receptacles: 5, 30, and 55 gallon drums containing either 2% or 5% enriched uranium compounds mixed with either water or oil. The calculations demonstrate the effect of both the array pitch and the uranium concentration on k{sub eff} No container was subcritical for all possible sets of concentration and pitch. All were safe for both very low and very high uranium concentrations. Acciden… more
Date: September 27, 1993
Creator: Pohl, B. A. & Koponen, B. L.
Partner: UNT Libraries Government Documents Department
open access

Effect of nitrocarburizing on shape of titanium alloy parts

Description: Components are being developed for plutonium casting in support of Lawrence Livermore National Laboratory. A vendor used a proprietary process to grow a nitrocarburized surface layer on a titanium alloy shot sleeve to be used in a prototype die casting machine. The shot sleeve was significantly out-of-round upon return from the vendor and could not be used. Purpose of this study was to determine whether the shape change could have been caused by this surface treatment. Visual observation of dis… more
Date: September 27, 1993
Creator: Clark, E. A.
Partner: UNT Libraries Government Documents Department
open access

Parameterization of GCM subgrid nonprecipitating cumulus and stratocumulus clouds using stochastic/phenomenological methods. Annual technical progress report, 1 December 1992--30 November 1993

Description: This document is a progress report to the USDOE Atmospheric Radiation and Measurement Program (ARM). The overall project goal is to relate subgrid-cumulus-cloud formation, coverage, and population characteristics to statistical properties of surface-layer air, which in turn are modulated by heterogeneous land-usage within GCM-grid-box-size regions. The motivation is to improve the understanding and prediction of climate change by more accurately describing radiative and cloud processes.
Date: August 27, 1993
Creator: Stull, R. B.
Partner: UNT Libraries Government Documents Department
open access

Studies of human mutation rates. Progress report, November 1992--October 1993

Description: The progress during 1992--1993 with respect to ER 60533 is summarized in this report under three headings: The development of two-dimensional DNA gels for the detection of mutation, the mitochondrial DNA of American Indians, and molecular verification of a suggested polyogeny for the eight most common phospheglucomutose-1 (POM1)alleles.
Date: October 27, 1993
Creator: Neel, J. V. & Hanash, S. M.
Partner: UNT Libraries Government Documents Department
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