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Tritium module for ITER/Tiber system code
A tritium module was developed for the ITER/Tiber system code to provide information on capital costs, tritium inventory, power requirements and building volumes for these systems. In the tritium module, the main tritium subsystems/emdash/plasma processing, atmospheric cleanup, water cleanup, blanket processing/emdash/are each represented by simple scaleable algorithms. 6 refs., 2 tabs.
Date:
January 1, 1988
Creator:
Finn, P. A.; Willms, S.; Busigin, A. & Kalyanam, K. M.
Object Type:
Article
System:
The UNT Digital Library
Middle Fork and Upper Salmon River Habitat Improvement Implementation Plan, FY 1988-1992.
This document presents an implementation plan for completing the phase II portion of the Middle Fork and Upper Salmon River Habitat Improvement Agreement. Underseeding of spawning adult salmon and steelhead, high instream sediment levels, a lack of habitat diversity in the form of overhanging riparian vegetation and edge, and barriers to both adult and juvenile anadromous fish migration were identified as the principal factors limiting anadromous fish production in the project area. Underseeding is being addressed in other projects sponsored and funded by the Bonneville Power Administration while this implementation plan lays out a schedule for resolving the other identified limiting factors. The primary goal of this program is to increase the quality and quantity of anadromous fish habitat (spring chinook and summer steelhead) with an emphasis on the survival of the wild stocks. This goal will be achieved by reducing the impact of sediment loading, improving riparian vegetation, eliminating passage barriers, and increasing habitat diversity. Meeting the above goal will provide off-site mitigation under the manadate of the pacific northwest electric power planning and conservation act of 1980. Project implementation will follow measures in the Northwest Power Council's Columbia River Fish and Wildlife Program. 9 refs., 3 figs., 5 …
Date:
February 1, 1988
Creator:
Andrews, John & Everson, Larry B.
Object Type:
Report
System:
The UNT Digital Library
Investigation of leaks in fiberglass-reinforced pressure vessels by direct observation of hollow fibers in glass cloth
A simple method of visual observation of hollow fibers within fiberglass cloth has been developed. This visualization can aid in determining the contribution these fibers make toward leaks observed in fiberglass-reinforced epoxy resin pressure or vacuum vessels. Photographs and frequency data of these hollow fibers are provided. 3 figs.
Date:
January 1, 1988
Creator:
McAdams, J.
Object Type:
Report
System:
The UNT Digital Library
The Soviet American Gallium Experiment (SAGE)
A radiochemical experiment using the reaction v/sub e/ = /sup 71/Ga + e/sup e/ to determine the integral flux of low-energy neutrinos from the sun is currently under preparation at the Baksan Neutrino Observatory in the USSR. Measurements are scheduled to commence by late 1988 using /approximately/30 tonnes of metallic gallium. With this amount of gallium it should be possible to obtain a fractional statistical accuracy of 12 to 15% after one year (assuming the standard solar model neutrino flux). While initial measurements are in progress, installation of the remaining 30 tonnes of gallium will proceed in order to perform the full 60 tonne experiment.
Date:
January 1, 1988
Creator:
Abazov, A. I.; Abdurashitov, D. N.; Anosov, O. P.; Avdeyev, A. V.; Belousko, Yu. I.; Bychuk, O. V. et al.
Object Type:
Article
System:
The UNT Digital Library
Gamma rays from Cygnus X-1: Modeling and nonthermal pair production
The gamma-ray bump observed between 0.5 and 2 MeV in the spectrum of Cygnus X-1 can be interpreted as the thermal emissions from a hot (kT)approximately)400 keV) pair-dominated cloud. We argue that the X-rays and gamma rays are produced in separate emission regions, and calculate the photon-photon pair production rate from X-ray and gamma-ray interactions in the vicinity of Cyg X-1 by employing a simplified geometry for the two emitting regions.
Date:
February 1, 1988
Creator:
Dermer, C. D. & Liang, E. P.
Object Type:
Article
System:
The UNT Digital Library
Further considerations of critical heat flux in saturated pool boiling during power transients
In this paper, we further evaluate our previously postulated transient CHF model. First, we verify the steady-state CHF model on which the transient model is based by using recent macrolayer-thickness data. We also include the effect of thermal storage in the heater that we previously neglected. The use of a simplified approach in the prediction of the instantaneous surface heat flux for given pwoer generation rates considerably improves the predictive capability of the transient critical heat-flux (CHF) model. Finally, we discuss the statistical vapor mass behavior during transient boiling and its effect on the transient CHF model. We show that the data scatter within a small range may be partially explained through such an approach.
Date:
January 1, 1988
Creator:
Pasamehmetoglu, K.O. & Nelson, R.A.
Object Type:
Article
System:
The UNT Digital Library
Integral fast reactor safety features
The Integral Fast Reactor (IFR) is an advanced liquid-metal-cooled reactor concept being developed at Argonne National Laboratory. The two major goals of the IFR development effort are improved economics and enhanced safety. In addition to liquid metal cooling, the principal design features that distinguish the IFR are: (1) a pool-type primary system, (2) an advanced ternary alloy metallic fuel, and (3) an integral fuel cycle with on-site fuel reprocessing and fabrication. This paper focuses on the technical aspects of the improved safety margins available in the IFR concept. This increased level of safety is made possible by (1) the liquid metal (sodium) coolant and pool-type primary system layout, which together facilitate passive decay heat removal, and (2) a sodium-bonded metallic fuel pin design with thermal and neutronic properties that provide passive core responses which control and mitigate the consequences of reactor accidents.
Date:
January 1, 1988
Creator:
Cahalan, J. E.; Kramer, J. M.; Marchaterre, J. F.; Mueller, C. J.; Pedersen, D. R.; Sevy, R. H. et al.
Object Type:
Article
System:
The UNT Digital Library
Mafic and Ultramafic Xenoliths from Volcanic Rocks of the Western United States
From abstract: Mafic and ultramafic xenoliths in the Western United States are present in volcanic rocks ranging from lamprophyric to dacitic in composition and are found in every major tectonic province from the Coast ranges from California to the Great Plains. Xenoliths from 68 localities are described here, but new localities are being discovered, and much remain to be learned about their distribution with respect to the tectonic and geophysical framework of the Western United States.
Date:
1988
Creator:
Wilshire, Howard Gordon; Meyer, C. E.; Nakata, John K.; Calk, L. C.; Shervais, John W.; Nielson, J. E. et al.
Object Type:
Report
System:
The UNT Digital Library
New newtron time-of-flight (NTOF) facilities at the Brookhaven 200-MeV Linac
The installation of a new beam chopper and radio-frequency quadrupole (RFQ) preinjector (750 keV) at the Brookhaven National Laboratory (BNL) 200-MeV Linac will enable single micropulse selection (pulse width <1 ns) with periods ranging from 400 ns to 10 ..mu..s. The standard micropulse intensity is 1.2 X 10/sup 9/ p..mu.. pulse with dc-average beam currents of 50 nA-1 ..mu..A routinely available. The NTOF facilities consists of 30-100 meter flight paths at angles of 0, 12, 30, 45, 90, and 135/degree/. Lower energies of 93, 117, 139, 161, and 181 MeV are also available as well as polarized beams at much reduced intensities. The present paper describes the new facilities, and the capabilities of future improvements and upgrades, for use in the BNL intermediate energy (p,n) experimental program. 7 refs., 2 figs., 1 tab.
Date:
January 1, 1988
Creator:
Ward, T.E.; Alessi, J.; Brennan, J.; Grand, P.; Lankshear, R.; Snead, C.L. et al.
Object Type:
Article
System:
The UNT Digital Library
The electronic structure of condensed molecular systems
We have reviewed some of the basic properties of the electronic structure of condensed molecular systems. For the rare-gas solids, we concentrated our discussion on changes in the ground- and excited-state crystal-atomic wave functions as calculated with an approximate theoretical method. Compression of these wave functions leads to a softening of the equation of state at high densities, which seems to account for much of the total many-body effects. This compression is a true many-body effect and cannot be easily decomposable into a sum of 3-body and higher terms. We reviewed the electronic properties of four molecular systems, each manifesting different behavior at high densities. Because of a general lack of theory of the electronic structure of molecular solids, we restricted ourselves to a descriptive account. Solid oxygen, for instance, seems to exhibit the beginnings of covalent bonding between the ..pi..* orbitals on adjacent molecules in its epsilon phase. It was a combination of optical-absorption data and infrared and Raman spectroscopy that led to these conclusions. Iodine is unique in that it becomes metallic as a molecular crystal at pressures easily obtainable experimentally. It is interesting that the x-ray data, which indicates a transition to a monatomic lattice at 21 …
Date:
January 1, 1988
Creator:
LeSar, R.A.
Object Type:
Article
System:
The UNT Digital Library
Profile correction to electron temperature and enhancement factor in soft x-ray pulse-height-analysis measurements in tokamaks
Because soft x-ray pulse-height-analysis (PHA) spectra contain chordal information, the electron temperature and the radiation intensity (enhancement factor) measurements do not represent the local values. Assuming that the profile Ansatz for the electron temperature and density is of the form n/sub eo/(1-(ra)/sup 2/)/sup ..cap alpha../ and kT/sub eo/(1--(ra)/sup 2/)/sup ..beta../, we obtain the correction factors for the electron temperature and the enhancement factor as a function of the profile coefficients ..cap alpha.. and ..beta.. and the energy at which the evaluation was made. The corrected values of the temperature are typically between 1 to 10% higher than the values derived from the raw chordal spectra. We also correct the measured radiation intensity for the profile effects. Finally, the spectrum distortion due to pulse pile-up effects is evaluated. A set of curves is given from which the distortion of the spectrum can be obtained, if the electron temperature, the Be or Al filter thickness, and the electronic parameters of the acquisition system are known. 7 refs., 23 figs.
Date:
April 1, 1988
Creator:
Sesnic, S.; Diesso, M.; Hill, K.; Holland, A. & Pohl, F.
Object Type:
Report
System:
The UNT Digital Library
Use of fiber optic equipment for security
This paper discusses the many applications of fiber optics equipment. (LSP)
Date:
January 1, 1988
Creator:
Schalm, R.W.
Object Type:
Article
System:
The UNT Digital Library
Isotopically selective, Doppler-free, saturation spectroscopy of lutetium isotopes via resonance ionization mass spectrometry
A new technique utilizing RIMS to obtain very high resolution atomic spectra with isotopic selectivity has been demonstrated. This technique allows the precise determination of HF splitting constants, limited only by the transition's natural linewidth. In addition, it is also feasible with this technique to accurately determine atomic isotope shifts. The exact determination of HF component line positions provides data for isotopically selective ionization which, in turn, will increase RIMS' dynamic range. Future work includes the incorporation of a /open quotes/vibrating/close quotes/ mirror and the study of rarer isotopes, i.e., /sup 174/Lu, /sup 173/Lu, /sup 172/Lu, /sup 171/Lu, and possibly, /sup 170/Lu. 13 refs., 3 figs.
Date:
January 1, 1988
Creator:
Fearey, B. L.; Parent, D. C.; Keller, R. A. & Miller, C. M.
Object Type:
Article
System:
The UNT Digital Library
Rf cavity primer for cyclic proton accelerators
The purpose of this note is to describe the electrical and mechanical properites of particle accelerator rf cavities in a manner which will be useful to physics and engineering graduates entering the accelerator field. The discussion will be limited to proton (or antiproton) synchrotron accelerators or storage rings operating roughly in the range of 20 to 200 MHz. The very high gradient, fixed frequency UHF or microwave devices appropriate for electron machines and the somewhat lower frequency and broader bandwidth devices required for heavy ion accelerators are discussed extensively in other papers in this series. While it is common pratice to employ field calculation programs such as SUPERFISH, URMEL, or MAFIA as design aids in the development of rf cavities, we attempt here to elucidate various of the design parameters commonly dealt with in proton machines through the use of simple standing wave coaxial resonator expressions. In so doing, we treat only standing wave structures. Although low-impedance, moderately broad pass-band travelling wave accelerating systems are used in the CERN SPS, such systems are more commonly found in linacs, and they have not been used widely in large cyclic accelerators. Two appendices providing useful supporting material regarding relativistic particle dynamics and …
Date:
April 1, 1988
Creator:
Griffin, J.E.
Object Type:
Article
System:
The UNT Digital Library
Uranium hexafluoride: Safe handling, processing, and transporting: Conference proceedings
This conference seeks to provide a forum for the exchange of information and ideas of the safety aspects and technical issue related to the handling of uranium hexafluoride. By allowing operators, engineers, scientists, managers, educators, and others to meet and share experiences of mutual concern, the conference is also intended to provide the participants with a more complete knowledge of technical and operational issues. The topics for the papers in the proceedings are widely varied and include the results of chemical, metallurgical, mechanical, thermal, and analytical investigations, as well as the developed philosophies of operational, managerial, and regulatory guidelines. Papers have been entered individually into EDB and ERA. (LTN)
Date:
January 1, 1988
Creator:
Strunk, W.D. & Thornton, S.G. (eds.)
Object Type:
Article
System:
The UNT Digital Library
SDI: Myth or reality
This report reviews previous attempt to develop strategic defenses, the technologies currently under consideration, their main unknowns, and their likely performance relative to evolving threats. 28 refs.
Date:
January 1, 1988
Creator:
Canavan, G.H.
Object Type:
Article
System:
The UNT Digital Library
Experience with the NEG (nonevaporable getter) strips at the Brookhaven heavy ion transport line
The AGS and the Tandem Van de Graaff, two valuable physics assets, are now jointed together by a transport line of 700 m in length. This line allows heavy ions from the Tandem, up to a fully striped silicon (M = 28) to be injected into the AGS and accelerated to energies of approximately 15 GeVamu. New areas of physics research at very high nuclear densities can now be studied using some of the extensive experimental facilities already existing at the AGS. With the addition of a booster synchrotron between the Tandem and the AGS, all heavier ions up to gold can also be accelerated. To minimize the beam loss due to charge exchange between the partially stripped heaviest ions (i.e. Au + 33 at 1 MeVamu) and the residual gas molecules, a vacuum of 10 /sup /minus/8/ Torr is required for this transport line. To achieve this vacuum, we have opted to use the combination of small ion pumps (20 1s diode type) and simple geometry was implemented which offers low cost (<$200m), easy installation and maintenance. Pressures of 10 /sup /minus/10/ and low 10 /sup /minus/9/ Torr have been maintained over the last two years following the initial …
Date:
January 1, 1988
Creator:
Hseuh, H. C.; Benjamin, J.; Stattel, P.; Feigenbaum, I. & Manni, M.
Object Type:
Article
System:
The UNT Digital Library
Nonlinear gyrokinetic theory for finite-BETA plasmas
A self-consistent and energy-conserving set of nonlinear gyrokinetic equations, consisting of the averaged Vlasov and Maxwell's equations for finite-..beta.. plasmas, is derived. The method utilized in the present investigation is based on the Hamiltonian formalism and Lie transformation. The resulting formation is valid for arbitrary values of k/perpendicular//rho//sub i/ and, therefore, is most suitable for studying linear and nonlinear evolution of microinstabilities in tokamak plasmas as well as other areas of plasma physics where the finite Larmor radius effects are important. Because the underlying Hamiltonian structure is preserved in the present formalism, these equations are directly applicable to numerical studies based on the existing gyrokinetic particle simulation techniques. 31 refs.
Date:
February 1, 1988
Creator:
Hahm, T. S.; Lee, W. W. & Brizard, A.
Object Type:
Report
System:
The UNT Digital Library
Towards an advanced hadron facility at Los Alamos
In the 1987 workshop, it was pointed out that activation of the accelerator is a serious problem. At this workshop, it was suggested that a new type of slow extraction system is needed to reduce the activation. We report on the response to this need. The Los Alamos plan is reviewed including as elements the long lead-time R and D in preparation for a 1993 construction start, a menu of accelerator designs, improved losses at injection and extraction time, active participation in the development of PSR, and accelerated hardware R and D program, and close collaboration with TRIUMF. We review progress on magnets and power supplies, on ceramic vacuum chambers, and on ferrite-turned rf systems. We report on the plan for a joint TRIUMF-Los Alamos main-ring cavity to be tested in PSR in 1989. The problem of beam losses is discussed in detail and a recommendation for a design procedure for the injection system is made. This recommendation includes taking account of single Coulomb scattering, a painting scheme for minimizing foil hits, and a collimator and dump system for containing the expected spills. The slow extraction problem is reviewed and progress on an improved design is discussed. The problem of …
Date:
January 1, 1988
Creator:
Thiessen, H.A.
Object Type:
Article
System:
The UNT Digital Library
Biological solutions to waste management
The purpose of this program is to develop low-cost processes for the removal of toxic metals from geothermal residual brines. Processes and methodologies are also being developed for the utilization of detoxified residues. Laboratory work at Brookhaven National Laboratory (BNL) has shown that bioleaching is an efficient method for the removal of toxic metals from residual brine sludges. Samples of geothermal brine residues, supplied by the industry, containing elevated concentrations of heavy metals were treated with cultures of several strains of acidophilic bacteria Thiobacillus thioxidans and Thiobacillus ferrooxidans, selected from the BNL collection. The effect of different experimental conditions on the rate of toxic metal removal has been investigated. Based on the experimental results obtained, a detoxification process for geothermal brine residues has been explored. A preliminary technical feasibility study indicates that for a typical 50 MW plant, a large-scale technically feasible process can be developed. 6 refs., 1 fig., 2 tabs.
Date:
January 1, 1988
Creator:
Premuzic, E. T.; Lin, Mow & Kukacka, L.
Object Type:
Article
System:
The UNT Digital Library
Dominant lethal study in CD-1 mice following inhalation exposure to 1,3-butadiene: Final technical report
The effects of whole-body inhalation exposures to 1,3-butadiene on the reproductive system was evaluated. The results of dominant lethality in CD-1 male mice that were exposed to 1,3-butadiene are described. Subsequent to exposure, males were mated with two unexposed females. Mating was continued for 8 weeks with replacement of two females each week. Gravid uteri were removed, and the total number, position and status of implantations were determined. The mice were weighed prior to exposure and at 0, 1, 2, 3, 4, 5, 6, 7, and 8 weeks after exposure and at sacrifice. The animals were observed for mortality, morbidity and signs of toxicity throughout the study. 19 refs., 5 figs., 9 tabs.
Date:
April 1, 1988
Creator:
Hackett, P. L.; Mast, T. J.; Brown, M. G.; Clark, M. L.; Evanoff, J. J.; Rowe, S. E. et al.
Object Type:
Report
System:
The UNT Digital Library
Analysis of plasma coupling with the prototype DIII-D ICRF antenna
Coupling to plasma in the H-mode is essential to the success of future ignited machines such as CIT. To ascertain voltage and current requirements for high-power second harmonic heating (2 MW in a 35- by 50-cm port), coupling to the DIII-D tokamak with a prototype compact loop antenna has been measured. The results show good loading for L-mode and limiter plasmas, but coupling 2 MW to an H-mode plasma demands voltages and currents near the limit of present technology. We report the technological analysis and progress that allow coupling of these power densities. 5 refs., 4 figs.
Date:
January 1, 1988
Creator:
Ryan, P.M.; Hoffman, D.J.; Bigelow, T.S.; Baity, F.W.; Gardner, W.L.; Mayberry, M.J. et al.
Object Type:
Article
System:
The UNT Digital Library
Challenge problems focusing on equality and combinatory logic: Evaluating automated theorem-proving programs
In this paper, we offer a set of problems for evaluating the power of automated theorem-proving programs and the potential of new ideas. Since the problems published in the proceedings of the first CADE conference proved to be so useful, and since researchers are now far more disposed to implementing and testing their ideas, a new set of problems to complement those that have been widely studied is in order. In general, the new problems provide a far greater challenge for an automated theorem-proving program than those in the first set do. Indeed, to our knowledge, five of the six problems we propose for study have never been proved with a theorem-proving program. For each problem, we give a set of statements that can easily be translated into a standard set of clauses. We also state each problem in its mathematical and logical form. In many cases, we also provide a proof of the theorem from which a problem is taken so that one can measure a program's progress in its attempt to solve the problem. Two of the theorems we discuss are of especial interest in that they answer questions that had been open concerning the constructibility of two …
Date:
January 1, 1988
Creator:
Wos, L. & McCune, W.
Object Type:
Article
System:
The UNT Digital Library
Energy related studies utilizing microcline thermochronology: Progress report, May 1, 1987-April 30, 1988
Rock samples from the Salton Sea Geothermal Field (sandstone, tuff, granite) and from accretionary prism sediments along the convergent margins in southeast Alaska and southwest Japan have been dated by the /sup 40/Ar/sup 39/Ar method. Paleotemperatures have been calculated. (ACR
Date:
April 30, 1988
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library