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Detector development and test facility. [Annual] technical report, [August 1, 1992--July 31, 1993] (open access)

Detector development and test facility. [Annual] technical report, [August 1, 1992--July 31, 1993]

Following the ideas presented in the proposal to the DoE, we have begun to acquire the equipment needed to design, develop, construct, and test the electronic and mechanical features of detectors used in High Energy Physics Experiments. A guiding principle for the effort is to achieve integrated electronic and mechanical designs which meet the demanding specifications of the modern hadron collider environment yet minimize costs. This requires state of the art simulation of signal processing as well as detailed calculations of heat transfer and finite element analysis of structural integrity.
Date: June 30, 1993
Creator: Reeder, D. D.
System: The UNT Digital Library
Hydrologic test plan for the Environmental Remediation Disposal Facility (open access)

Hydrologic test plan for the Environmental Remediation Disposal Facility

Hydrologic tests are planned at seven wells that will be drilled at the proposed Environmental Remediation Disposal Facility (ERDF). These wells are supporting hydrologic, geologic, and hydrochemical characterization at this new facility. Hydrologic testing will consist of instantaneous slug tests, slug interference tests, step-drawdown tests, and constant rate discharge tests (generally single-well). These test results and later groundwater monitoring data will be used to determine groundwater flow directions, flow rates, and the chemical makeup of the groundwater below the proposed ERDF. The seven wells will be drilled in two phases. In Phase I four wells will be drilled and tested: Two to the top of the uppermost aquifer (water table) and two as characterization boreholes to the top of basalt. The Phase I wells are located in the northern portion of the proposed ERDF site (699-32-72, 699-SDF-6, -7 and -8) (Figure 1). If Phase II drilling proceeds, the remaining three wells will be installed and tested (two deep and one shallow). A phased approach to drilling is warranted because of current uncertainty in the land use requirements at the proposed ERDF.
Date: September 30, 1993
Creator: Swanson, L. C.
System: The UNT Digital Library
Development of Rotating Shadowband Spectral Radiometers and GCM Radiation Code Test Data Sets in Support of ARM. Technical Progress Report, September 15, 1992--October 31, 1993 (open access)

Development of Rotating Shadowband Spectral Radiometers and GCM Radiation Code Test Data Sets in Support of ARM. Technical Progress Report, September 15, 1992--October 31, 1993

The ARM goal is to help improve both longwave and shortwave models by providing improved radiometric shortwave data. These data can be used directly to test shortwave model predictions. As will be described below they can also provide inferred values for aerosol and cloud properties that are useful for longwave modeling efforts as well. The current ARM research program includes three tasks all related to the study of shortwave radiation transfer through clouds and aerosol. Two of the tasks involve the assembly of archived and new radiation and meteorological data sets; the third and dominant task has been the development and use of new shortwave radiometric sensors. Archived data from Golden, Colorado, and Albany, New York, were combined with National Weather Service ground and upper air data for testing radiation models for the era when the Earth Radiation Budget Experiment (ERBE) was operational. These data do not include optimum surface radiation measurements; consequently we are acquiring downwelling shortwave, including direct and diffuse irradiance, plus downwelling longwave, upwelling shortwave, and aerosol optical depth, at our own institution, as an additional dataset for ARM modelers.
Date: April 30, 1993
Creator: Michalsky, J. & Harrison, L.
System: The UNT Digital Library
A coal-fired combustion system for industrial process heating applications. Quarterly technical progress report, April 1993--June 1993 (open access)

A coal-fired combustion system for industrial process heating applications. Quarterly technical progress report, April 1993--June 1993

Vortec Corporation`s Phase III development contract DE-AC22-91PC91161 for a ``Coal-Fired Combustion System for Industrial Process Heating Applications`` is project funded under the DOE/PETC advanced combustion program. This advanced combustion system research program is for the development of innovative coal-fired process heaters which can be used for high temperature melting, smelting and waste vitrification processes. The process heater systems to be developed have multiple use applications; however, the Phase III research effort is being focused on the development of a process heater system to be used for producing value added vitrified glass products from boiler/incinerator ashes and industrial wastes. The primary objective of the Phase III project is to develop and integrate all the system components, from fuel through total system controls, and then test the complete system in order to evaluate its potential marketability. During the past quarter, the designs of the remaining major components of the integrated system were completed and the equipment was ordered. DOE has elected to modify the scope of the existing R&D program being conducted under this contract to include testing of a simulated TSCA incinerator ash. The modification will be in the form of an additional Task (Task 8 -- TSCA Ash Testing) to …
Date: July 30, 1993
Creator: unknown
System: The UNT Digital Library
Radar stimulator interface protocol, preliminary interface design and Doppler Beam Sharpening implementation (open access)

Radar stimulator interface protocol, preliminary interface design and Doppler Beam Sharpening implementation

This is the final report for a subcontract to supply a Doppler Beam Sharpening model to interface with the radar stimulation package running on the Cray supercomputers. The article describes the beam sharpening model, and the way beam sharpening is implemented by the model. Changes from previous work are emphasized in this report.
Date: June 30, 1993
Creator: Aldrich, C. H.
System: The UNT Digital Library
Body growth considerations in age-specific dosimetry. Final report (open access)

Body growth considerations in age-specific dosimetry. Final report

This report describes the manner in which the age-specific dosimetric calculations of the International Commission on Radiological Protection (ICRP) addressed changes in organ size that occur with age. The approach involves an interpolation of dosimetric information derived for six reference individuals using the inverse of the total body mass as the interpolation variable. An alternative formulation is investigated that employs a functional representation of the organ mass as a function of age in conjunction with an explicit formulation of the dosimetric factors in terms of organ mass. Using an exponential-logistic growth function as suggested by Walker, this report demonstrates, through application to the dosimetry of radioiodines in the thyroid, that the alternative formulation can be formulated and implemented. Although either approach provides a workable basis for age-specific dosimetry, it is clear that the functional representation of organ growth has some attractive features. However, without question, the major difficulty is the quality and quantity of data available to address the age- and gender-specific parameters in the dosimetric formulations.
Date: September 30, 1993
Creator: Eckerman, K. F.
System: The UNT Digital Library
Final report for confinement vessel analysis: Task 1, Correlation of new vessel data with finite element results (open access)

Final report for confinement vessel analysis: Task 1, Correlation of new vessel data with finite element results

Los Alamos performed tests of a modified confinement vessel in November 1992 to gain a better understanding of the response of the confinement vessel. The first test was meant to duplicate, with additional instrumentation, tests done previously for correlation with analysis. Task 1 of Subcontract Number 9-XH3-0607K-1 was the correlation of this new vessel test data with the results of finite element analyses. The authors also examined the data for the other test, which was for optical port development. The tests were numbered H-1573 and H-1562 and were fired on November 9 and 10, 1992, respectively. Test H-1573 was identical to the previous 40 lb tests except that a Burke tube was used to support the explosive charge while the explosive was freely suspended in the earlier tests. The second test, H-1562, was for development of the optical port. In addition to the Burke tube, this test also had additional components on the inside of the ports to protect the windows. The following are conclusions and recommendations drawn from assessment and correlation of tests H-1573 and H-1562: (1) yielding was measured at the bottom of the vessel for these tests; (2) the presence of a support tube in the vessel …
Date: November 30, 1993
Creator: Lewis, B. B.
System: The UNT Digital Library
Theoretical particle physics. Progress report, FY 1993 (open access)

Theoretical particle physics. Progress report, FY 1993

This report discusses the following topics: Heavy Quark Physics; Chiral Perturbation Theory; Skyrmions; Large-N Limit; Weak Scale Baryogenesis; Supersymmetry; Rare Decays; Technicolor; Chiral Lattice Fermions; Pauli-Villars Regulator and the Higgs Mass Bound; Higgs and Yukawa Interactions; Gauge Fixing; and Quantum Beables.
Date: September 30, 1993
Creator: unknown
System: The UNT Digital Library
Spallation neutron source/proposed rf system (open access)

Spallation neutron source/proposed rf system

The rf system for the synchrotrons of the spallation neutron source is designed to accelerate 1.4 {times} 10{sup 14} protons/pulse to an energy of 3.6 GeV. Injection energy is 600 MeV. The synchrotron repetition frequency is 30 Hz, with a 50% duty factor. The choice of operating frequency is somewhat arbitrary. The authors propose a low frequency of 1.3 to 1.6 MHz, which is the second harmonic of the revolution frequency. The advantages of such a low frequency system are: (1) There will be two bunches in the machines and the time between bunches will be sufficiently long to allow for the rise time of the extraction kicker. No missing bunches will be necessary, which simplifies injection, and transient beam loading problems are avoided. (2) With only two bunches there are no unstable coupled-bunch modes of longitudinal instability. (3) In multi-gap low frequency cavities the transient time factor is essentially unity because the rf wavelength is much longer than the cavity dimensions. (4) Cavities in this low frequency range are basically lumped-element type structures, where the sources of the inductance and capacitance are clearly identified. This allows effective control of higher order mode impedances in such cavities. (5) Ferrite-loaded low-frequency …
Date: September 30, 1993
Creator: Meth, M. & Brennan, J. M.
System: The UNT Digital Library
Treatability studies on F/H Area ``hot spot`` groundwater composite. Revision 1 (open access)

Treatability studies on F/H Area ``hot spot`` groundwater composite. Revision 1

The data found in this report were collected from laboratory experiments that were conducted to characterize the ``hot spot`` groundwater before and after pH adjustment, to describe the settling behavior and particle size of the precipitates resulting from pH adjustment, and to compare several methods of pH adjustment. Although Decontamination Factors (DFs) for all precipitating agents are similar, the best settling characteristics and most manageable precipitate were produced when 25 ppM Al{sup 3+} was introduced as Al{sub 2}(SO{sub 4}){sub 3} and pH adjustment was made from 6--8 with NaOH. The resulting precipitate will not be a hazardous secondary waste.
Date: August 30, 1993
Creator: Bibler, J. P.
System: The UNT Digital Library
Bench-scale testing of the Multi-Gravity separator in combination with Microcel. Third quarterly report, April 1, 1993--June 30, 1993 (open access)

Bench-scale testing of the Multi-Gravity separator in combination with Microcel. Third quarterly report, April 1, 1993--June 30, 1993

The primary objective of the proposed work is to design, install, and operate an advanced fine coal processing circuit combining the Microcel and Multi-Gravity-Separator (MGS) technologies. Both of these processes have specific advantages as stand-alone units. For example, the Microcel column effectively removes ash-bearing mineral matter, while the MGS efficiently removes coal-pyrite composites. By combining both unit operations into a single processing circuit, synergistic advantages can be gained. As a result, this circuit arrangement has the potential to improve coal quality beyond that achieved using the individual technologies. Work this quarter primarily focused on procurement and fabrication of the required process equipment. All fabrication work is underway and is expected to be completed prior to the installation deadline. Delays in the existing project within the Pittsburgh Energy Technology Center`s Coal Preparations Process Research Facility have resulted in a shift in the original project schedule. A new installation date (June 28, 1993) has been established by DOE/PETC. The overall project schedule has been adjusted accordingly. Revisions to ESH subject plans were also completed during this quarter. Based on these plans, the ESH permitting procedure has been initiated by the contracting officer`s representative. The subject plans and circuit will be modified, if …
Date: July 30, 1993
Creator: unknown
System: The UNT Digital Library
Production of mild gasification co-products project. First quarterly technical progress report, January 1, 1993--March 31, 1993 (open access)

Production of mild gasification co-products project. First quarterly technical progress report, January 1, 1993--March 31, 1993

Progress continued on production of co-product samples for four coals from three coal regions: Buckskin Mine coal (Wyoming, Powder River Basin, Coal), Knife River Mine Lignite (Beulah Zap, North Dakota Lignite), Sarpy Creek Mine Coal (Montana Rosebud, Powder River Basin Coal), Usibelli Mine Coal (Alaska Coal).
Date: April 30, 1993
Creator: unknown
System: The UNT Digital Library
Inverse Cerenkov experiment. Final report (open access)

Inverse Cerenkov experiment. Final report

The final report describes work performed to investigate inverse Cherenkov acceleration (ICA) as a promising method for laser particle acceleration. In particular, an improved configuration of ICA is being tested in a experiment presently underway on the Accelerator Test Facility (ATF). In the experiment, the high peak power ({approximately} 10 GW) linearly polarized ATF CO{sub 2} laser beam is converted to a radially polarized beam. This is beam is focused with an axicon at the Cherenkov angle onto the ATF 50-MeV e-beam inside a hydrogen gas cell, where the gas acts as the phase matching medium of the interaction. An energy gain of {approximately}12 MeV is predicted assuming a delivered laser peak power of 5 GW. The experiment is divided into two phases. The Phase I experiments, which were completed in the spring of 1992, were conducted before the ATF e-beam was available and involved several successful tests of the optical systems. Phase II experiments are with the e-beam and laser beam, and are still in progress. The ATF demonstrated delivery of the e-beam to the experiment in Dec. 1992. A preliminary ``debugging`` run with the e-beam and laser beam occurred in May 1993. This revealed the need for some …
Date: September 30, 1993
Creator: Kimura, W. D.
System: The UNT Digital Library
Assist in the Recovery of Bypassed Oil From Reservoirs in the Gulf of Mexico. Quarterly Status Report, April 1, 1993--June 30, 1993 (open access)

Assist in the Recovery of Bypassed Oil From Reservoirs in the Gulf of Mexico. Quarterly Status Report, April 1, 1993--June 30, 1993

Much of the remaining oil offshore is trapped in formations that are extremely complex due to intrusions of salt domes. Conventional seismic processing techniques cannot clearly image either these traps or the full extent of oil-bearing segments near the salt domes; therefore, substantial volumes of oil may have remained uncontacted by previous drilling. Recently, however, significant innovations have been made in seismic processing and mathematical migration of seismic signal. In addition, significant advances have been made in deviated and horizontal drilling technologies and applications. These technology advances make it possible to reprocess existing seismic data to identify non-contacted portions of the reservoirs, which can then be contacted using advanced drilling technologies to kick out new wells from existing wells. Effective application of these technologies, along with improved recovery methods, offers opportunities to significantly increase Gulf of Mexico production, delay platform abandonments, and preserve access to a substantial remaining oil target for enhanced recovery and other advanced recovery processes. During this reporting period, data collection continued from the Minerals Management Service (MMS) and several operators. Modifications to BOAST II and MASTER reservoir simulators for the integration of radial grid systems and for use in simulating miscible gas injection processes in steeply …
Date: July 30, 1993
Creator: Schenewerk, P. A.
System: The UNT Digital Library
Case studies of sewage treatment with recovery of energy from methane (open access)

Case studies of sewage treatment with recovery of energy from methane

In the Southeast, there are about 3,000 wastewater plants with a capacity of over one million gallons per day. Under this study, operating data and available financial information on a variety of technologies for large and small plans was documented for ten facilities. Studies were done on wastewater treatment plants (WWTPs) with design capacities ranging from 9.5--120 million gallons per day. All of these WWTPs recover the gas produced in their anaerobic digesters and use at least part of it as fuel for boilers and/or internal combustion engines. The engines power generators, blowers, or pumps, and most are equipped with heat recovery systems. Based on the historical data provided by the participants in this study and from the authors` own technical analysis, methane recovery and utilization systems appear to be cost effective, although the degree of cost effectiveness varies widely. The types of energy recovery systems are not uniform among all the participants so that the cases in this limited survey are not precisely comparable to each other. Also, reliance on historical data and cost information generated from portions of total plant operations and estimates makes it difficult to complete analysis of specific variables. The fact remains, however, that regardless …
Date: June 30, 1993
Creator: Phillips, C. A.; Webster, N. & Wander, J.
System: The UNT Digital Library
Waste Management Fault Tree Data Bank (WM): 1992 status report (open access)

Waste Management Fault Tree Data Bank (WM): 1992 status report

The Risk Assessment Methodology Group (RAM) of the Nuclear Process Safety Research Section (NPSR) maintains a compilation of incidents that have occurred in the Waste Management facilities. The Waste Management Fault Tree Data Bank (WM) contains more than 35,000 entries ranging from minor equipment malfunctions to incidents with significant potential for injury or contamination of personnel. This report documents the status of the WM data bank including: availability, training, source of data, search options, and usage, to which these data have been applied. Periodic updates to this memorandum are planned as additional data or applications are acquired.
Date: August 30, 1993
Creator: Baughman, D. F.; Hang, P. & Townsend, C. S.
System: The UNT Digital Library
Feasibility of the Shallow High Resolution Seismic Reflection Technique for Use at the Hanford Site (open access)

Feasibility of the Shallow High Resolution Seismic Reflection Technique for Use at the Hanford Site

Data obtained during site characterization should be useful to assess the need for remediation, to evaluate and design effective remedial plans, and to allow long-term monitoring to discern remediation effectiveness. A valuable environmental tool that incorporates this data is a model that describes groundwater and vadose zone flow and transport characteristics. Data on geology and hydrology combined with information on contaminant sources are incorporated into these conceptual models that delineate the relative significance of the various fluid migration pathways. Downstream these same models also support risk assessment, remediation design, and long-term assessment of remediation effectiveness. Consequently, the building of coherent, accurate vadose zone and groundwater models is fundamental to a successful remediation. Among the important requirements for these models is accurate knowledge of flow domain boundaries and soil characteristics. At the Hanford Site, this knowledge is obtained primarily from borehole data, which provides information only at a point. In the high energy flood and fluvial deposits found at the Hanford Site, it can, at times, be difficult to correlate lithologic horizons between boreholes. Where there is no borehole control, our understanding of the geometry of hydrogeologic boundaries and thus of fluid migration paths is limited. Surface geophysical techniques are generally …
Date: July 30, 1993
Creator: Narbutovskih, S. M.
System: The UNT Digital Library
RHIC off-line computing (open access)

RHIC off-line computing

A report was prepared in Sept 1992, RHIC/DET Note 8, also known as ROCOCO, which estimated the various computing resources which will be required by the RHIC experimental program. A study has now been undertaken to review technical issues associated with supplying these resources. This study, organized by the HEP/NP Computing Group but including other appropriate participants, addresses questions of technologies, manpower, cost and schedule. The following document is an interim summary of this study both in terms of discussions which have occurred and initial conclusions reached.
Date: June 30, 1993
Creator: Featherly, J.; Gibbard, B. & Gould, J.
System: The UNT Digital Library
Bench-scale testing of the multi-gravity separator in combination with Microcel. Second Quarterly report, January 1, 1993--March 31, 1993 (open access)

Bench-scale testing of the multi-gravity separator in combination with Microcel. Second Quarterly report, January 1, 1993--March 31, 1993

Work this quarter focused on the development of the engineering design specifications for the ET Test Circuit. Process flowsheets and detailed equipment specifications were finalized. Based on this information, bid packages were assembled and purchase orders were issued for all of the necessary process equipment. The design and procurement information is summarized in the ET Circuit Design Report submitted to the DOE`s COR this quarter. Final drafts of the ET Circuit - System Safety Analysis, Nuclear Density Gauge - System Safety Analysis and Operating Manual/SOP were also completed and submitted to the COR this quarter. Preliminary characterization studies were also initiated this quarter. Tests were conducted to determine the grinding conditions required to achieve the desired particle size distributions for the characterization work. Flotation release analysis tests were conducted on both the Pittsburgh {number_sign}8 and Illinois {number_sign}6 seam coals as a function of grind size. The primary objective of the proposed work is to design, install, and operate an advanced fine coal processing circuit combining the Microcel and Multi-Gravity-Separator (MGS) technologies. Both of these processes have specific advantages as stand-alone units. For example, the Microcel column effectively removes ash-bearing mineral matter, while the MGS efficiently removes coal-pyrite composites. By combining …
Date: April 30, 1993
Creator: unknown
System: The UNT Digital Library
Hydrogeochemical and production controls on NORM in oil- and gas- field operations. Technical progress report, April 1, 1993--June 30, 1993 (open access)

Hydrogeochemical and production controls on NORM in oil- and gas- field operations. Technical progress report, April 1, 1993--June 30, 1993

The goal of this project is to investigate the geochemical, geological, and production parameters that control the occurrence of naturally occurring radioactive materials (NORM) in oil-and gas-field operations, Activities during the second quarter of 1993 focused on identifying field sample sites, identifying previously analyzed produced-water samples that are suitable for NORM analysis, establishing methods for analyzing radium in produced water and scale, and modifying existing geochemical modeling codes to predict radium coprecipitation with carbonate and sulfate scale on the basis of thermodynamic properties.
Date: July 30, 1993
Creator: Fisher, R. S.
System: The UNT Digital Library
Rapid pressure swing absorption cleanup of post-shift reactor synthesis gas. Technical progress report, November 1, 1992--January 31, 1993 (open access)

Rapid pressure swing absorption cleanup of post-shift reactor synthesis gas. Technical progress report, November 1, 1992--January 31, 1993

This investigation is concerned with the separation of gas mixtures using a novel concept of rapid pressure swing absorption (RAPSAB) of gas in a stationary absorbent liquid through gas-liquid interfaces immobilized in the pore mouths of hydrophobic microporous membranes. The process is implemented in a module well-packed with hydrophobic microporous hollow fiber membranes. The specific objectives are (1) to develop a theoretical model which will provide guidelines for selecting an efficient RAPSAB process cycle which includes desorption; (2) to demonstrate the concept experimentally with a simple gas mixture (e.g.,Co{sub 2}-N{sub 2}) and a simple absorbent liquid such as water, and (3) to extend the concept to reactive absorbent liquids for the separation of CO, Co{sub 2} from the post-shift reactor synthesis gas. We have initiated the development of a theoretical model for the absorption part of the RAPSAB cycle (mode 3) where the reactive absorbent diethanolamine (DEA) is used in an aqueous solution to remove CO{sub 2} from a CO{sub 2}-N{sub 2} mixture.
Date: April 30, 1993
Creator: Sirkar, K. K.; Majumdar, S. & Bhaumik, S.
System: The UNT Digital Library
Idaho National Engineering Laboratory installation roadmap document. Revision 1 (open access)

Idaho National Engineering Laboratory installation roadmap document. Revision 1

The roadmapping process was initiated by the US Department of Energy`s office of Environmental Restoration and Waste Management (EM) to improve its Five-Year Plan and budget allocation process. Roadmap documents will provide the technical baseline for this planning process and help EM develop more effective strategies and program plans for achieving its long-term goals. This document is a composite of roadmap assumptions and issues developed for the Idaho National Engineering Laboratory (INEL) by US Department of Energy Idaho Field Office and subcontractor personnel. The installation roadmap discusses activities, issues, and installation commitments that affect waste management and environmental restoration activities at the INEL. The High-Level Waste, Land Disposal Restriction, and Environmental Restoration Roadmaps are also included.
Date: May 30, 1993
Creator: unknown
System: The UNT Digital Library
Synthesis of octane enhancers during slurry-phase Fischer-Tropsch. Quarterly technical progress report No. 9, October 1, 1992--December 31, 1992 (open access)

Synthesis of octane enhancers during slurry-phase Fischer-Tropsch. Quarterly technical progress report No. 9, October 1, 1992--December 31, 1992

Figure 7 summarizes the carbon selectivities observed towards the main products. During Period IV, the main products observed were the heavy hydrocarbons, with selectivity for MTBE being less than 3--5%. The only time that high MTBE selectivity was noted was during period III, when the i-butylene feed was shut-off. The large amounts of heavy products and the low selectivity to MTBE were surprising in view of our previous experiments in the gas phase and the high methanol-to-i-butylene ratio used in these runs. In the gas-phase and with methanol/i-butylene = 0.5, over 95% selectivity to MTBE was observed with this catalyst at this temperature. The higher level of methanol used here would be expected to further improve the MTBE selectivity. Perhaps one reason for the poor MTBE selectivity relates to the relative solubilities of the reactants in the Synfluid changing the effective methanol/i-butylene ratio. Figure 8 shows the relative molar concentration of i-butylene during Period III. At 180 minutes, the gas supply of that reactant was shut-off, yet the analyses show that i-butylene continued to elute from the reactor for at least an additional 2 hours. It seems reasonable that the i-butylene is highly soluble in the Synfluid since they are …
Date: June 30, 1993
Creator: Marcelin, G.
System: The UNT Digital Library
Defects and transport in mixed oxides. Progress report, [December 22, 1992--September 30,1993] (open access)

Defects and transport in mixed oxides. Progress report, [December 22, 1992--September 30,1993]

Progress has been made in: nonstoichiometry of rock salt structure oxide solid solutions; cation tracer diffusion in oxide solid solutions of the types (Co,Mn){sub 3-{delta}}O{sub 4} and (Co,Fe){sub 1-{Delta}}O; electrical conductivity in solid solution (Co,Fe){sub 1-{Delta}}O; Monte-Carlo simulation of the cation diffusion in spinel solid solutions; thermodynamic modelling of the ternary phase diagram of the system Co-Fe-Mn-O and the boundary systems Co-Fe-O and Fe-Mn-O at 1200 C; and interdiffusion in spinel solid solutions.
Date: September 30, 1993
Creator: Dieckmann, R.
System: The UNT Digital Library