Noise considerations in millimeter-wave spectrometers (open access)

Noise considerations in millimeter-wave spectrometers

An improved version of a microwave spectrometer operating in the vicinity of 70 GHz is described. The spectrometer, which incorporates a Fabry-Perot resonator and superheterodyne detection for high sensitivity is designed for the detection of gaseous pollutants and other atmospheric constituents. The instrument is capable of detecting polar molecules with absorption coefficients as small as 2 x 10/sup -9/cm/sup -1/. For sulphur dioxide diluted in air, this sensitivity corresponds to a detection limit of 1.2 ppm without preconcentration and with a time constant of 1 second. Measurements and analysis of the noise contributions limiting the sentivity are presented.
Date: December 1, 1978
Creator: Zoellner, W.D.; Kolbe, W.F. & Leskovar, B.
System: The UNT Digital Library
Hazardous properties and environmental effects of materials used in solar heating and cooling (SHAC) technologies: interim handbook (open access)

Hazardous properties and environmental effects of materials used in solar heating and cooling (SHAC) technologies: interim handbook

General background informaion related to SHAC systems, how a particular material was chosen for this handbook, and codes and standards are given. Materials are categorized according to their functional use in SHAC systems as follows: (1) heat transfer fluids and fluid treatment chemicals, (2) insulation materials, (3) seals and sealant materials, (4) glazing materials, (5) collector materials, and (6) storage media. The informaion is presented under: general properties, chemical composition, thermal degradation products, and thermoxidative products of some commercial materials; toxic properties and other potential health effects; fire hazard properties; and environmental effects of and disposal methods for SHAC materials. (MHR)
Date: December 1, 1978
Creator: Searcy, J.Q.
System: The UNT Digital Library
Meteorological data bases available for the United States Department of Energy Oak Ridge Reservation (open access)

Meteorological data bases available for the United States Department of Energy Oak Ridge Reservation

Solar radiation, precipitation, wind, and temperature phenomena are being monitored at two sites on the Oak Ridge Reservation--Oak Ridge and Walker Branch Watershed. For these two sites and two non active sites on the Reservation, height of the instruments, the available data for the parameters, and the temporal distribution of the data collected are described. Examples of data access and the contact for accessing the data through the Environmental Sciences Division Data Center, ORNL, are given.
Date: December 1, 1978
Creator: Strand, R. H. & Miller, C. W.
System: The UNT Digital Library
Thermal-hydraulic and neutronic considerations for designing a lithium-cooled tokamak blanket (open access)

Thermal-hydraulic and neutronic considerations for designing a lithium-cooled tokamak blanket

A methodology for the design of lithium cooled blankets is developed. The thermal-hydraulics, neutronics and interactions between them are extensively investigated. In thermal hydraulics, two models illustrate the methodology used to obtain the acceptable ranges for a set of design parameters. The methodology can be used to identify the limiting constraints for a particular design. A complete neutronic scheme is set up for the calculations of the volumetric heating rate as a function of the distance from the first wall, the breeding ratio as a function of the amount of structural material in the blanket, and the radiation damage in terms of atom displacements and gas production rate. Different values of the volume percent of Type-316 stainless steel are assigned in four breeding zones to represent a nonuniformly distributed structural material which satisfies various thermal-hydraulic requirements. The role that the radiation damage plays in the overall design methodology is described. The product of the first wall lifetime and neutron loading is limited by the radiation damage which degrades the mechanical properties of the material.
Date: December 1, 1978
Creator: Chao, J; Mikic, B & Todreas, N
System: The UNT Digital Library
Applied nuclear data research and development. Progress report, July 1--September 30, 1978 (open access)

Applied nuclear data research and development. Progress report, July 1--September 30, 1978

Activities of the Los Alamos Nuclear Data Group for the period July 1 through September 30, 1978, are described. Work was performed in the following subject areas: theory and evaluation of nuclear cross sections; nuclear cross-section processing; and fission products and actinides--yields, yield theory, decay data, depletion, and buildup. Separate abstracts were prepared for four sections that contained significant amounts of data. 18 figures, 12 tables. (RWR)
Date: December 1, 1978
Creator: Baxman, C.I. & Young, P.G. (comps.)
System: The UNT Digital Library
Collisions of halogen (/sup 2/P) and rare gas (/sup 1/S) atoms. [Differential cross sections, elastic model, coupling potential energy, L-S coupling, multiplets] (open access)

Collisions of halogen (/sup 2/P) and rare gas (/sup 1/S) atoms. [Differential cross sections, elastic model, coupling potential energy, L-S coupling, multiplets]

Differential cross sections I (THETA) at several collision energies measured in crossed molecular beam experiments are reported for several combinations of halogen atoms (/sup 2/P) scattered off rare gas-rare gas atoms (/sup 1/S/sub 0/), namely, F + Ne, F + Ar, F + Kr, F + Xe, C1 + Xe. The scattering is described by an elastic model appropriate to Hund's case c coupling. With the use of this model, the X 1/2, I 3/2, and II 1/2 interaction potential energy curves are derived by fitting calculated differential cross sections, based on analytic representations of the potentials, to the data. The F - Xe X 1/2 potential shows a significant bonding qualitatively different than for the other F-rare gases. The I 3/2 and II 1/2 potentials closely resemble the van der Waals interactions of the one electron richer ground state rare gas-rare gas systems. Coupled-channel scattering calculations are carried out for F + Ar, F + Xe, and C1 + Xe using the realistic potential curves derived earlier. The results justify the use of the elastic model, and give additional information on intramultiplet and intermultiplet transitions. The transitions are found to be governed by the crossing of the two ..cap …
Date: December 1, 1978
Creator: Becker, C. H.
System: The UNT Digital Library
Hanford site as it relates to an alternative site for the Waste Isolation Pilot Plant: an environmental description (open access)

Hanford site as it relates to an alternative site for the Waste Isolation Pilot Plant: an environmental description

The use of basalt at Hanford as an alternative for the Waste Isolation Pilot Plant (WIPP) would require that the present Basalt Waste Isolation Program (BWIP) at Hanford be expanded to incorporate the planned WIPP functions, namely the permanent storage of transuranic (TRU) wastes. This report discusses: program costs, demography, ecology, climatology, physiography, hydrology, geology, seismology, and historical and archeological sites. (DLC)
Date: December 1, 1978
Creator: Fecht, K.R. (ed.)
System: The UNT Digital Library
Ocean Thermal Energy Conversion power system development. Phase I. Final report (open access)

Ocean Thermal Energy Conversion power system development. Phase I. Final report

This report covers the conceptual and preliminary design of closed-cycle, ammonia, ocean thermal energy conversion power plants by Westinghouse Electric Corporation. Preliminary designs for evaporator and condenser test articles (0.13 MWe size) and a 10 MWe modular experiment power system are described. Conceptual designs for 50 MWe power systems, and 100 MWe power plants are also descirbed. Design and cost algorithms were developed, and an optimized power system design at the 50 MWe size was completed. This design was modeled very closely in the test articles and in the 10 MWe Modular Application. Major component and auxiliary system design, materials, biofouling, control response, availability, safety and cost aspects are developed with the greatest emphasis on the 10 MWe Modular Application Power System. It is concluded that all power plant subsystems are state-of-practice and require design verification only, rather than continued research. A complete test program, which verifies the mechanical reliability as well as thermal performance, is recommended and described.
Date: December 4, 1978
Creator: unknown
System: The UNT Digital Library
Laser development for laser fusion applications. Research progress report, April 1978--September 1978 (open access)

Laser development for laser fusion applications. Research progress report, April 1978--September 1978

A separate abstract was prepared for each section of the report. (TFD)
Date: December 1, 1978
Creator: unknown
System: The UNT Digital Library
LOFT CIS analysis: 1''-PCC-76-A inside containment penetration S-1A. Internal technical report (open access)

LOFT CIS analysis: 1''-PCC-76-A inside containment penetration S-1A. Internal technical report

The stress analysis performed on the 1''-PCC-76-A piping system inside containment penetration S-1A is described. Deadweight, thermal expansion, and seismic loads were considered. Results of this analysis show that the subject piping system will meet ASME Boiler and Pressure Vessel Code, Section III, Class 2 requirements provided that supports S8 and S9 are installed as recommended.
Date: December 11, 1978
Creator: Nitzel, M.E.
System: The UNT Digital Library
Ocean Thermal Energy Conversion power system development. Phase I: preliminary design. Final report (open access)

Ocean Thermal Energy Conversion power system development. Phase I: preliminary design. Final report

Westinghouse has completed the Preliminary Desigh Phase for the Power System Development of the Ocean Thermal Energy Conversion (OTEC) Demonstration Plant project. This study included the development of a preliminary design for a Modular Application scaled power system (10MWe) and Heat Exchanger Test Articles, both based on the concept developed in the Conceptual Design Phase. The results of this study were used to improve the baseline design of the 50MWe module for the Commercial Size Power System, which was recommended for the demonstration plant by the conceptual design study. The 50MWe module was selected since it has the lowest cost, and since its size convincingly demonstrates that future economically viable commercial plants, having reliable operation with credible anticipated costs, are possible. Additional optimization studies on the size of the power system plus hull continue to identify 50MWe as the preferred minimum cost configuration. This study was limited to a closed cycle ammonia power system module, using a seawater temperature difference of 40/sup 0/F, and a surface platform/ship reference hull. This volume presents the preliminary design configuration and system optimization. (WHK)
Date: December 4, 1978
Creator: unknown
System: The UNT Digital Library
Qualification test and analysis report: solar collectors (open access)

Qualification test and analysis report: solar collectors

Test results show that the Owens-Illinois Sunpak/sup TM/ Model SEC 601 air-cooled collector meets the national standards and codes as defined in the Subsystem Performance Specification and Verification Plan of NASA/MSFC Contract NAS8-32259, dated October 28, 1976. The architectural and engineering firm of Smith, Hinchman and Grylls, Detroit, Michigan, acted in the capacity of the independent certification agency. The program calls for the development, fabrication, qualification and delivery of an air-liquid solar collector for solar heating, combined heating and cooling, and/or hot water systems.
Date: December 1, 1978
Creator: unknown
System: The UNT Digital Library
Fuel Gas Demonstration Plant Program: Small-Scale Industrial Project. Certificate of need (open access)

Fuel Gas Demonstration Plant Program: Small-Scale Industrial Project. Certificate of need

This Certificate of Need draft was prepared to meet new requirements as imposed by the Minnesota Energy Agency (MEA) since the original Erie/DOE contract was signed. The preparation of this document was authorized with the approval of the Certificate of Need contained in Contract Amendment No. A-005 of the Erie/DOE contract. With the issue of the Certificate of Need draft, Erie Mining Company considers this document requirement complete as it pertains to Phase I activities and delivered to DOE in accordance with Erie/DOE contract EW-78-C-02-5066 Appendix A, Part 3.I.F.5.
Date: December 1, 1978
Creator: unknown
System: The UNT Digital Library