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Solar energy conference, final report

Description: The conference attendance, publicity and press coverage, brochure mailing, presentations, displays, exhibitors, management seminar checklist, and seminar evaluation by attendees are presented. Also included are the proposal for funding of the conference, the list of attendees, keynote speeches, agenda, and feedback questionnaire. (MHR)
Date: May 24, 1977
Creator: none,
Partner: UNT Libraries Government Documents Department

Research issues and supporting research of the National Program on Carbon Dioxide, Environment and Society, fiscal year 1980

Description: This report outlines and summarizes the research conducted in the United States under the auspices of the CO/sub 2/ program. The Program encompasses six primary categories which, in turn, are divided into 18 research subcategories and 51 research issues. The research program was designed to describe the research which should be conducted regardless of institutional or even national sponsorship. Project descriptions have been collected and classified according to the research issue to which they most directly apply and have been inserted immediately following the applicable issue description. This provides, for the first time, a detailed view of the nation's effort in addressing the carbon dioxide question in FY 1980.
Date: January 1, 1981
Partner: UNT Libraries Government Documents Department

Strategy analysis for energy conservation. Task 1: economic studies

Description: Development and implementation of an analytical methodology to evaluate alternative research, development, and demonstration projects to allocate Federal funds in a manner consistent with overall DOE and National Energy Plan goals are presented. Documentation of the first step toward addressing these goals is presented. Historical consumption and efficiency of energy usage in the US are traced. Based on a variety of sources and assumptions, a set of no action projections of energy consumption through 2000 was developed. These projections were then compared to national goals derived from the NEP and other sources to identify specific requirements for energy conservation through efficiency improvements and fuel switching. These requirements will form the basis for development and implementation of the analytical methodology as part of Tasks 2 and 3. The methodology concept is discussed in detail.
Date: February 1, 1978
Partner: UNT Libraries Government Documents Department

Water flows from slotted pipes

Description: Results of experiments and analyses that determine jet flow distribution from slotted pipes of dimensions typical for OC-OTEC evaporators or condensers are described. For a pipe with a 6.3-cm inside diameter and 0.64-cm wide slot, the measured and predicted jet flow was low and nearly parallel to the pipe at the entrance, and high and perpendicular to the pipe only near the closed end. Slot lengths ranged from 1.5 m to 4.6 m, and inlet flow rates varied from 6 kg/s to 17 kg/s. Friction reduces the pressure in the entrance and intermediate portions of the pipe, while the rapidly decelerating flow produces high pressure recovery as it approaches the closed end. In the region of high flow next to the closed end, the ratio of slot area (slot length times width) to pipe cross-sectional area is less than two. To use a slotted pipe for generating falling jets in an OC-OTEC plant, the slot length should be 1 m or less (for a pipe with a 6.3-cm inside diameter and a 0.64-cm wide slot).
Date: April 1, 1981
Creator: Olson, D.A.
Partner: UNT Libraries Government Documents Department

Nuclear Structure References (NSR) file. [Mostly information for input]

Description: The use of the Nuclear Structure References file by the Nuclear Data Project at ORNL is described. Much of the report concerns format information of interest only to those preparing input to the system or otherwise needing detailed knowledge of its internal structure. 17 figures. (RWR)
Date: August 1, 1978
Creator: Ewbank, W.B.
Partner: UNT Libraries Government Documents Department

Quantum mean-field theory of collective dynamics and tunneling

Description: A fundamental problem in quantum many-body theory is formulation of a microscopic theory of collective motion. For self-bound, saturating systems like finite nuclei described in the context of nonrelativistic quantum mechanics with static interactions, the essential problem is how to formulate a systematic quantal theory in which the relevant collective variables and their dynamics arise directly and naturally from the Hamiltonian and the system under consideration. Significant progress has been made recently in formulating the quantum many-body problem in terms of an expansion about solutions to time-dependent mean-field equations. The essential ideas, principal results, and illustrative examples are summarized. An exact expression for an observable of interest is written using a functional integral representation for the evolution operator, and tractable time-dependent mean field equations are obtained by application of the stationary-phase approximation (SPA) to the functional integral. Corrections to the lowest-order theory may be systematically enumerated. 6 figures. (RWR)
Date: January 1, 1981
Creator: Negele, J.W.
Partner: UNT Libraries Government Documents Department

TRAN-STAT, Issue No. 3, January 1978. Topics discussed: some statistical aspects of compositing field samples

Description: Some statistical aspects of compositing field samples of soils for determining the content of Pu are discussed. Some of the potential problems involved in pooling samples are reviewed. This is followed by more detailed discussions and examples of compositing designs, adequacy of mixing, statistical models and their role in compositing, and related topics.
Date: January 1, 1978
Creator: Gilbert, R.O.
Partner: UNT Libraries Government Documents Department

Land-use implications of wind-energy-conversion systems

Description: An estimated 20 utilities in the United States are now investigating potential wind machine sites in their areas. Identifying sites for wind machine clusters (wind farms) involves more than just finding a location with a suitable wind resource. Consideration must also be given to the proximity of sites to existing transmission lines, environmental impacts, aesthetics, and legal concerns as well as the availability of and alternative uses for the land. These issues have made it increasingly difficult for utilities to bring conventional power plants on-line quickly. Utilities are now required, however, to give careful consideration to specific legal, social, and environmental questions raised by the siting of wind energy conversion systems (WECS).
Date: February 1, 1981
Creator: Noun, R.J.
Partner: UNT Libraries Government Documents Department

User's manual for the cloud and scavenging module version 1. 2. [RADM]

Description: This report presents a detailed description of a stable cloud model. This model was designed to characterize a steady-state scavenging environment using meteorological conditions provided by a regional scale meteorology code. The model described in this report explicitly simulates processes related to cloud microphysics. The cloud model predicts the vertical profiles of condensed water that correspond to specified surface precipitation rates, surface temperatures, and cloud top heights. The cloud model also predicts profiles of various micro-physical constituents, such as fall velocity, accretion rates, etc., that exist in conjunction with the condensed water profiles. Descriptions are presented of routines written to solve mass conservation equations for air, cloud, and precipitation water. The solutions are appropriate for precipitating or nonprecipitating clouds within a mesoscale grid with horizontal spacing on the order of 50 km. Routines are also provided for generating tables of profiles for many discrete input conditions. Once tables are generated, additional routines may be used to interpolate between the tables and to rapidly provide values different from the discrete input levels.
Date: April 1, 1987
Creator: Scott, B.C.
Partner: UNT Libraries Government Documents Department

Status of rare decay experiments

Description: Some results are given for rare muon decay experiments currently running. Also, plans are discussed for rare kaon decay experiments. Some of the events sought come from processes which violate lepton flavor conservation. Several apparatuses used in the search are described. 35 references. (LEW)
Date: January 1, 1984
Creator: Littenberg, L.S.
Partner: UNT Libraries Government Documents Department

Modelling concept for energy utilization

Description: The present energy shortage will be with us for some time. In order to optimize the use of energy for space conditioning, computer models are required that relate the energy demand by individual buildings to design and occupancy specifications of that building, and to environmental weather sequences. The energy consumption by different types of buildings will have to be converted into community- and city-wide energy-use patterns. Such a model is presently available at Colorado State Univ. Refinement efforts are aimed at providing energy estimates for wide and diverse regions of the U.S., to judge what effects adverse weather conditions over prolonged time periods would have on energy requirements, and to estimate the adequacy or inadequacy of present power-transmission systems.
Date: January 1, 1977
Creator: Reiter, E.R.
Partner: UNT Libraries Government Documents Department

Utility guidelines for reactor noise analysis: Final report

Description: Noise analysis techniques have been extensively utilized to monitor the health and performance of nuclear power plant systems. However, few utilities have adequate programs to effectively utilize these techniques. These programs usually provide low-quality data, which can lead to misinterpretation and false alarms. The objective of this work is to provide utilities and noise analysts with guidelines for data acquisition, data analysis, and interpretation of noise analysis results for surveillance and diagnosis of reactor systems.
Date: February 1, 1987
Creator: Sweeney, F.J.
Partner: UNT Libraries Government Documents Department

Some statistical problems inherent in radioactive-source detection. [Searching for lost radiation source with moving detector system]

Description: Some of the statistical questions associated with problems of detecting random-point-process signals embedded in random-point-process noise are examined. An example of such a problem is that of searching for a lost radioactive source with a moving detection system. The emphasis is on theoretical questions, but some experimental and Monte Carlo results are used to test the theoretical results. Several idealized binary decision problems are treated by starting with simple, specific situations and progressing toward more general problems. This sequence of decision problems culminates in the minimum-cost-expectation rule for deciding between two Poisson processes with arbitrary intensity functions. As an example, this rule is then specialized to the detector-passing-a-point-source decision problem. Finally, Monte Carlo techniques are used to develop and test one estimation procedure: the maximum-likelihood estimation of a parameter in the intensity function of a Poisson process. For the Monte Carlo test this estimation procedure is specialized to the detector-passing-a-point-source case. Introductory material from probability theory is included so as to make the report accessible to those not especially conversant with probabilistic concepts and methods. 16 figures.
Date: October 12, 1978
Creator: Barnett, C.S.
Partner: UNT Libraries Government Documents Department

R-matrix methods

Description: The procedures used in the application of R-matrix theory to atomic and molecular collision processes are presented. The computationally advantageous features of these methods are high-lighted, and some applications to electron scattering and photoionization are briefly discussed.
Date: January 1, 1978
Creator: Robb, W.D.
Partner: UNT Libraries Government Documents Department

Recent results obtained by use of accelerators on plasma-edge properties in controlled-fusion devices and on properties of high-power neutral beams

Description: The study of plasma-wall interactions is of primary importance in present fusion devices. Measurements of incident fuel and impurity fluxes, retention and release of fuel atoms, and erosion of internal components are of particular interest. Accelerators in the megaelectronvolt range are being used both to measure the depth profile of fuel atoms implanted in samples placed in the plasma edge by use of nuclear reactions and to measure impurities and film thicknesses by use of elastic scattering reactions. Secondary ion mass spectrometry (SIMS) is used to determine flux and energy distributions of fuel atoms and to measure species composition and impurities in the beams of high power neutral beam injectors. Recent results obtained with these techniques are presented and areas of future study are discussed.
Date: January 1, 1982
Creator: Langley, R.A.
Partner: UNT Libraries Government Documents Department

Vacuum interrupters and thyratrons as opening switches

Description: The clear advantages of inductive storage for large scale energy storage applications are creating an increasing interest in the research and development of the opening switches required. Opening switches for single-shot inductive transfers have received considerable attention and are fairly well advanced. The problem addressed by this workshop of high power opening switches for high repetition rate applications is much more severe, however, and may well require a major research and development effort. Two candidates for such an opening switch, the triggered vacuum interrupter and the magnetically quenched thyratron, are discussed. By electrically retriggering the discharge in the vacuum interrupter between pulses, the dependence on mechanical motion is eliminated. This should enable repetition rate operation at 10 to 15 kHz while still maintaining the vacuum interrupter's proven interrupting performance of tens of kiloamps at tens of kilovolts. The magnetically quenched thyratron, on the other hand, uses a cross magnetic field to raise the switch impedance by decreasing the electron mobility and driving the discharge into an arc chute wall where it is quenched. Successful interruptions of 1 kA at 15 kV and 100 A at 50 kV after conduction for 10 ..mu..s have been demonstrated by previous researchers. Work at Los Alamos is directed toward understanding the basic mechanisms involved and increasing the switch ratings, particularly the conduction time.
Date: January 1, 1981
Creator: Honig, E.M.
Partner: UNT Libraries Government Documents Department

Various applications of Zeeman atomic absorption spectroscopy

Description: The application of the Zeeman effect to atomic absorption spectroscopy has been studied over the past several years. This technique has a larger area of application than conventional AAS because of its high degree of selectivity. The ZAA technique can be used for organometallic species determination by interfacing with a high-pressure liquid chromatograph. Various kinds of eluents can be directly introduced in the ZAA system; even organic solvents or high-concentration salt solutions. For example, the Co atom in the functional center of Vitamin B12 molecule was separately analyzed in the presence of much larger amounts of inorganic Co. In the ZAA technique, interference caused by direct spectral overlap can also be corrected. As a typical example, the Sb line at 217.02 nm overlaps the Pb absorption line at 217.00 nm. However, 1000 ppM of Pb did not cause any interference signal in the Sb analysis by ZAA. This is especially important in the analysis of gun powder residue that is often carried out by chemists working in the forensic field. In the determination of trace elements in matrices of unknown composition, the ZAA technique achieved highly reliable results by employing the standard addition method to correct for chemical interferences, because any nonspecific absorption or emission does not give rise to interference signals with this technique.
Date: June 1, 1978
Creator: Koizumi, H.
Partner: UNT Libraries Government Documents Department

Thermal-nutritional regulation of functional groups in running water ecosystems. Technical progress report, October 1, 1978-November 1, 1980

Description: The research encompassed three general areas: (1) characterization of stream macroinvertebrate functional feeding groups (shredders, collectors, scrapers, and predators) based on morphological and behavioral adaptations and food-source-specific growth responses of selected species; (2) demonstration of the relative importance of temperature and food quality (in which maximum quality is defined as that producing the most growth) in controlling growth rate and survivorship of stream functional groups; and (3) derivation and refinement of conceptual and quantitative models of stream ecosystem structure and function, with particular emphasis on detrital processing. Verification of the functional group concept as a tool for assessing and predicting is reflected in alterations of the relative dominance of various functional groups. Food quality can strongly influence the growth rates of shredders, collectors and scrapers and override the effects of temperature in a number of cases. Gathering collectors may select food particles by size (or at least be restricted to a limited portion of the total range available) but representative species do not appear to select for quality.
Date: November 1, 1980
Creator: Cummins, K.W.
Partner: UNT Libraries Government Documents Department

Prospects for research with radioactive beams and targets

Description: Research with heavy ion (HI) beams has become a major field of physics. Nuclei of all naturally occuring elements and isotopes can be accelerated to energies as high as 2 GeV/A with even higher energies expected in the future. With the advent of relativistic heavy ion accelerators and the development of high intensity on-line isotope separators it has now become possible to explore a new dimension in nuclear physics based on the production and application of radioactive ion beams (RIB). More than 1400 unstable nuclei with half lives of more than 1 ..mu..s are known and could potentially serve as projectiles in RIB experiments. The purpose of this paper is firstly to point out that there are now several promising possibilities to obtain RIB's of acceptable intensity and that secondly a large variety of scientific questions can be addressed should such beams become routinely available. The discussion of the production of RIB's is divided into methods where the radioactive species are stopped and reaccelerated, and methods where the RIB emerges as a secondary beam from a suitable nuclear reation. A third section is devoted to the far reaching experimental possibilities related to accumulator and storage rings. The chapters on research will cover the application of RIB's to the synthesis of exotic nuclei, astrophysics, reaction mechanisms, nuclear structure, atomic- and solid-state physics, bio-medicine, and physics related to the special characteristics of storage rings.
Date: June 1, 1984
Creator: Nitschke, J.M.
Partner: UNT Libraries Government Documents Department

Calculational assessment of critical experiments with mixed oxide fuel pin arrays moderated by organic solution

Description: Critical experiments have been conducted with organic-moderated mixed oxide (MOX) fuel pin assemblies at the Pacific Northwest Laboratory (PNL) Critical Mass Laboratory (CML). These experiments are part of a joint exchange program between the United States Department of Energy (USDOE) and the Power Reactor and Nuclear Fuel Development Corporation (PNC) of Japan in the area of criticality data development. The purpose of these experiments is to benchmark computer codes and cross-section libraries and to assess the reactivity difference between systems moderated by water and those moderated by an organic solution. Past studies have indicated that some organic mixtures may be better moderators than water. This topic is of particular importance to the criticality safety of fuel processing plants where fissile material is dissolved in organic solutions during the solvent extraction process. In the past, it has been assumed that the codes and libraries benchmarked with water-moderated experiments were adequate when performing design and licensing studies of organic-moderated systems. Calculations presented in this paper indicated that the SCALE code system and the 27-energy-group cross-section accurately compute k-effectives for organic moderated MOX fuel-pin assemblies. Furthermore, the reactivity of an organic solution with a 32-vol-% TBP/68-vol-% NPH mixture in a heterogeneous configuration is the same, for practical purposes, as water. 5 refs.
Date: January 1, 1987
Creator: Smolen, G.R.
Partner: UNT Libraries Government Documents Department

Revegetation following artificial disturbance. Three year progress report, June 1, 1975--February 28, 1978

Description: The purpose of the study was to look at some of the potential problems associated with reseeding or reclamation in the buffer zone at the Rocky Flats nuclear weapons plant near Golden, Colorado. During the time covered by this report, another contract dealing with the Grasslands Irradiation Site was transferred to this contract. It was proposed that plant sensitivity to an internal alpha dose, such as might be encountered on Pu contaminated or uranium mine mill tailing contaminated soils, be measured using chromosome aberrations as the end point. This three year report is divided into two subproject reports; one dealing with the Rocky Flats work and one dealing with the grasslands irradiation study. The objectives of the first study were to determine a rapid and feasible method of revegetation;determine a revegetation method such that the vegetation will revert to a natural system as rapidly as possible; and develop a predictive model for soil movement by wind during the revegetation period. The results of the second investigation to date are as follows. There was no change in diversity over the last 3 year period. There was no change in coefficient of community over the last 3 year period. There was no change in Bogr cover over the last 3 year period, but there has been a steady but slow decline in the exposure rate resulting in a Bogr cover equal to 50% of the no effects mean since the second year of irradiation. (ERB)
Date: May 2, 1978
Creator: Fraley, L. Jr.
Partner: UNT Libraries Government Documents Department

Steady natural convection heat transfer experiments in a horizontal annulus for the United States Spent Fuel Shipping Cask Technology Program. [LMFBR]

Description: This experimental study deals with the measurement of the heat transfer across a horizontal annulus which is formed by an inner hexagonal cylinder and an outer concentric circular cylinder. The geometry simulates, in two dimensions, a liquid metal fast breeder reactor radioactive fuel subassembly inside a shipping container. This geometry is also similar to a radioactive fuel pin inside a horizontal reactor subassembly. The objective of the experiments is to measure the local and mean heat transfer at the surface of the inner hexagonal cylinder.
Date: April 1, 1981
Creator: Boyd, R. D.
Partner: UNT Libraries Government Documents Department

Polarization at the SLC

Description: The Stanford Linear collider was designed to accommodate polarized electron beams. Longitudinally polarized electrons colliding with unpolarized positrons at a center of mass energy near the Z/sup 0/ mass can be used as novel and sensitive probes of the electroweak process. A gallium arsenide based photon emission source will provide a beam of longitudinally polarized electrons of about 45 percent polarization. A system of bend magnets and a superconducting solenoid will be used to rotate the spins so that the polarization is preserved while the 1.21 GeV electrons are stored in the damping ring. Another set of bend magnets and two superconducting solenoids orient the spin vectors so that longitudinal polarization of the electrons is achieved at the collision point with the unpolarized positrons. A system to monitor the polarization based on Moller and Compton scattering will be used. Nearly all major components have been fabricated and tested. Subsystems of the source and polarimeters have been installed, and studies are in progress. The installation and commissioning of the entire system will take place during available machine shutdown periods as the commissioning of SLC progresses. 8 refs., 16 figs., 1 tab.
Date: October 1, 1988
Creator: Moffeit, K.C.
Partner: UNT Libraries Government Documents Department