Serial/Series Title
OIT Tip Sheets
7
Science & Technology Review
7
Chemical Processing Department Monthly Report
6
Fiscal Year 1998
6
Fiscal Year 2000
6
Hanford Laboratories Operation Monthly Activities Report
6
LWBR Development Program
6
ARM Facilities Newsletter
5
Fiscal Year 1999
5
Annual Illness and Injury Surveillance Report
4
107 More
Country
States
Decade
Year
Month
Language
22,258 Matching Results
Results open in a new window/tab.
Fuel temperature determination for ICF microspheres
The common heuristic expression for estimating thermonuclear burn in ICF microspheres far from bootstrap heating is often used for inversion to obtain peak temperatures from experimental data. It contains an ad hoc or fitted parameter and lacks some parameters of obvious influence in actual systems. We present an alternative expression, which may be usefully inverted and does not suffer these defects.
Date:
August 1, 1980
Creator:
Henderson, D.B. & Giovanielli, D.V.
Object Type:
Report
System:
The UNT Digital Library
Geochemical orientation survey of stream sediment, stream water, and ground water near uranium prospects, Monticello area, New York. National Uranium Resource Evaluation Program
A detailed geochemical test survey has been conducted in a 570 sq km area around six small copper-uranium prospects in sandstones of the Devonian Catskill Formation near Monticello in southern New York state. This report summarizes and interprets the data for about 500 stream sediment samples, 500 stream water samples, and 500 ground water samples, each analyzed for 40 to 50 elements. The groundwater samples furnish distinctive anomalies for uranium, helium, radon, and copper near the mineralized localities, but the samples must be segregated into aquifers in order to obtain continuous well-defined anomalies. Two zones of uranium-rich water (1 to 16 parts per billion) can be recognized on cross sections; the upper zone extends through the known occurrences. The anomalies in uranium and helium are strongest in the deeper parts of the aquifers and are diluted in samples from shallow wells. In stream water, copper and uranium are slightly anomalous, as in an ore factor derived from factor analysis. Ratios of copper, uranium, and zinc to conductivity improve the resolution of anomalies. In stream sediment, extractable uranium, copper, niobium, vanadium, and an ore factor furnish weak anomalies, and ratios of uranium and copper to zinc improve the definition of anomalies. …
Date:
August 1, 1982
Creator:
Rose, A. W.; Smith, A. T. & Wesolowski, D.
Object Type:
Report
System:
The UNT Digital Library
Theoretical understanding of charm decays
A detailed description of charm decays has emerged. The various concepts involved are sketched. Although this description is quite successful in reproducing the data the chapter on heavy flavour decays is far from closed. Relevant questions like on th real strength of weak annihilation, Penguin operators, etc. are still unanswered. Important directions in future work, both on the experimental and theoretical side are identified.
Date:
August 1, 1986
Creator:
Bigi, I. I.
Object Type:
Article
System:
The UNT Digital Library
Suppression of superheavy magnetic monopoles in grand unified theories
The superheavy magnetic monopoles predicted by grand unified theories would not be produced in significant numbers if electromagnetic gauge invariance is spontaneously broken when the temperature T is greater than T/sub c/ >approx. 1 TeV.
Date:
August 1, 1980
Creator:
Pi, S.Y.
Object Type:
Article
System:
The UNT Digital Library
Study of rock-water-nuclear waste interactions in the Pasco Basin, Washington: Part II. Preliminary equilibrium-step simulations of basalt diagenesis
Interactions between a large number of complex chemical and physical processes have resulted in significant changes in the Pasco Basin hydrochemical system since emplacement of the first basalt flow. In order to perform preliminary simulations of the chemical evolution of this system, certain simplifying assumptions and procedures were adopted and a computer model which operates on the principal of local equilibrium was used for the mass transfer calculations. Significant uncertainties exist in both the thermodynamic and reaction rate data which were input to the computer model. In addition, the compositional characteristics of the evolving hydrochemical system remain largely unknown, especially as a function of distance along the flow path. Given these uncertainties, it remains difficult to assess the applicability of the equilibrium-step approach even though reasonable matches between observed and simulated hydrochemical data were obtained. Given the uncertainties mentioned, the predictive abilities of EQ6 are difficult, if not impossible to evaluate; our simulations produced, at best, only qualitative agreement with observed product mineral assemblages and sequences, and fluid compositions.
Date:
August 1, 1980
Creator:
Benson, L. V.; Carnahan, C. L. & Che, M.
Object Type:
Report
System:
The UNT Digital Library
CALCULATIONS OF THE DOPPLER COEFFICIENT OF LARGE CERAMIC-FUELED FAST REACTORS
ABS>Calculations of the Doppler coefficient of large, ceramicfueled fast reactors containing plutonium were made by means of the ELMOE program to provide accurate flux calculations. The temperature-dependent cross sections of P. Greebler et al., for U/sup 238/ and Pu/sup 239/ were used. Doppler coefficients of the order of 10/sup -5/ ntermediate tem k/ C were obtained, in agreement with Greebler's results. Coefficients of carbide fueled reactors are about 0.7 of those of oxide-fueled reactors at the same fuel enrichment. Effective coarse- group elastic-removal cross sections for light elements are tabulated. It appears that, with tabulations of this sort as a guide, coarse-group sets of cross sections can be constructed to give adequate accuracy in calculations of Doppler coefficients without use of ELMOE. (auth)
Date:
August 1, 1962
Creator:
Bhide, M.G. & Hummel, H.H.
Object Type:
Report
System:
The UNT Digital Library
Terrestrial perturbation experiments as an environmental assessment tool
The National Environmental Policy Act of 1969 (NEPA) was initially interpreted as requiring full disclosure of the environmental impacts of a federal action. Because of the limitations of time, money, and manpower, this requirement that all impacts be considered has led to superficial analysis of many important impacts. The President's Council on Environmental Quality (CEQ) has provided a solution to this problem by reinterpreting NEPA as requiring analysis of those impacts which have significant bearing on decision making. Because assessment resources can now be concentrated on a few critical issues, it should be possible to perform field perturbation experiments to provide direct evidence of the effects of a specific mixture of pollutants or physical disturbances on the specific receiving ecosystem. Techniques are described for field simulation of gaseous and particulate air pollution, soil pollutants, disturbance of the earth's surface, and disturbance of wildlife. These techniques are discussed in terms of their realism, cost, and the restrictions which they place on the measurement of ecological parameters.
Date:
August 1, 1980
Creator:
Suter, G. W. II
Object Type:
Report
System:
The UNT Digital Library
Techniques for analyzing the impacts of certain electric-utility ratemaking and regulatory-policy concepts. Regulatory laws and policies. [State by state]
This report is a legal study prepared to provide a review of the substantive and procedural laws of each regulatory jurisdiction that may affect implementation of the PURPA standards, and to summarize the current state of consideration and implementation of policies and rate designs similar or identical to the PURPA standards by state regulatory agencies and nonregulated utilities. This report is divided into three sections. The first section, the Introduction, summarizes the standards promulgated by PURPA and the results of the legal study. The second section, State Regulatory Law and Procedure, summarizes for each state or other ratemaking jurisdiction: (1) general constitutional and statutory provisions affecting utility rates and conditions of service; (2) specific laws or decisions affecting policy or rate design issues covered by PURPA standards; and (3) statutes and decisions governing administrative procedures, including judicial review. A chart showing actions taken on the policy and rate design issues addressed by PURPA is also included for each jurisdiction, and citations to relevant authorities are presented for each standard. State statutes or decisions that specifically define a state standard similar or identical to a PURPA standard, or that refer to one of the three PURPA objectives, are noted. The third …
Date:
August 1, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
F/H Area ETF effluent (H-016 outfall), ceriodaphnia survival/reproduction test, test date: March 21, 1991
This toxicity test was conducted to determine if the effluent from the F/H area at Savannah River Plant affects the survival or reproduction of the test organisms during a seven day period. The test involved exposing the test organisms to a series of dilutions of the effluent. At each dilution the survival and reproduction of ten test organisms was recorded. Each effluent dilution was compared to a control set of test organisms. Survival data were analyzed by Fisher's Exact Test and the Trimmed Spearman-Karber test to determine the effluent concentration necessary to cause statistically significant (p = 0.05) mortality. Reproduction data was analyzed for normality, homogeneity of variance and equality of replicates among dilutions to determine the appropriate statistical test for analysis of statistical differences in reproduction among dilutions. Results are summarized.
Date:
August 1, 1991
Creator:
Specht, Winona L.
Object Type:
Report
System:
The UNT Digital Library
Some general properties of stimulated Raman propagation with pump depletion, transiency and dispersion
This note considers some of the properties of the Stokes pulse that grows from a specified seed pulse in the presence of a strong pump pulse as it propagates through a dispersive atomic vapor. We first present an generic dimensionless form for the coupled equations that govern the propagation of pump and Stokes fields or collinear plane-wave pulses. By treating the two fields we permit pump depletion. We include transient atomic response (as embodied in the Raman coherence), but neglect changes in atomic populations. (Thus our equations pertain to the regime in which atoms are more numerous than photons). The equations employ a gain length, a dispersion time {tau}{sub dis}, and a Raman coherence time (or memory time) {tau}{sub R} as basic parameters: these two times, together with a single-photon stationary-atom detuning {Delta}, subsume the details of a particular atomic Raman transition and particular operating conditions. (The effects of Doppler shifts enters the equations through the coherence time). We discuss some general properties of these generic Raman propagation equations, and present illustrations of their solutions in the absence of dispersion. We comment on departures from exponential growth. We than show examples of behavior when dispersion is present and the pump …
Date:
August 2, 1991
Creator:
Shore, B. W.; Lowder, S. & Johnson, M. A.
Object Type:
Report
System:
The UNT Digital Library
Production and decay of heavy top quarks
Experimental evidence indicates that the top quark exists and has a mass between 50 and 200 GeV/c{sup 2}. The decays of a top quark with a mass in this range are studied with emphasis placed on the mass region near the threshold for production of real W bosons. Topics discussed are: (1) possible enhancement of strange quark production when M{sub W} + m{sub s} < m{sub t} < M{sub W} + m{sub b}; (2) exclusive decays of T mesons to B and B{asterisk} mesons using the non-relativistic quark model; (3) polarization of intermediate W's in top quark decay as a source of information on the top quark mass. The production of heavy top quarks in an e{sup +}e{sup {minus}} collider with a center-of-mass energy of 2 TeV is studied. The effective-boson approximation for photons, Z{sup 0}'s and W's is reviewed and an analogous approximation for interfaces between photons and Z{sup 0}'s is developed. The cross sections for top quark pair production from photon-photon, photon-Z{sup 0}, Z{sup 0}Z{sup 0}, and W{sup +}W{sup {minus}} fusion are calculated using the effective-boson approximation. Production of top quarks along with anti-bottom quarks via {gamma}W{sup +} and Z{sup 0}W{sup +} fusion is studied. An exact calculation …
Date:
August 1, 1989
Creator:
Kauffman, R.P.
Object Type:
Report
System:
The UNT Digital Library
Quantum electrodynamics with complex fermion mass
The quantum electrodynamics (QED) with a complex fermion mass -- that is, a fermion mass with a chiral phase -- is restudied, together with its chirally rotated version. We show how fake electric dipole moment can be obtained and how to avoid it. 10 refs.
Date:
August 1, 1991
Creator:
McKellar, B. J. H. & Wu, D. D.
Object Type:
Report
System:
The UNT Digital Library
Three-dimensional free electron laser dispersion relation including betatron oscillations
We have developed a 3-D FEL theory based upon the Maxwell-Vlasov equations including the effects of the energy spread and emittance of the electron beam, and of betatron oscillations. The radiation field is expressed in terms of the Green's function of the inhomogeneous wave equation and the distribution function of the electron beam. The distribution function is expanded in terms of a set of orthogonal functions determined by the unperturbed particle distribution. The coupled Maxwell-Vlasov equations are then reduced to a matrix equation, from which a dispersion relation for the eigenvalues is derived. In the limit of small betatron oscillation frequency, the present dispersion relation reduces to the well-known cubic equation of the one-dimensional theory in the limit of large beam size, and it gives the correct gain in the limit of small beam size. Comparisons of our numerical results with other approaches show good agreement. We present a handy empirical formula for the FEL gain of a 3-D Gaussian beam, as a function of the scaled parameters, that can be used for a quick estimate of the grain. 5 refs., 2 figs.
Date:
August 1, 1991
Creator:
Chin, Y. H.; Kim, K. J. & Xie, M.
Object Type:
Article
System:
The UNT Digital Library
Silicon ingot casting: Heat Exchanger Method (HEM)/multi-wire slicing: Fixed Abrasive Slicing Technique (FAST), Phase IV. Quarterly progress report No. 2, April 1, 1980-June 30, 1980
Silicon ingot size cast by HEM has been extended to 34 cm x 34 cm x 10 cm. A 20 kg ingot has been solidified at 3 kg/hr with no crucible attachment or ingot cracking problems. Another ingot of 26 kg weight has also been solidified. The heat treatment used to develop a graded structure caused cracking on the inside surface of the first large crucibles. The thermal conditions were altered to minimize high gradients and the cracking was eliminated. A high degree of single crystallinity has been maintained as the size of the ingots has been increased. A graphite retainer made out of flat plates was used to produce an ingot with flat sides and rounded curves. It is now possible to electroplate diamonds only on the cutting edge of the wire. The advantages associated with diamonds on the cutting edge only are lower kerf, improved accuracy by improved seating in the support rollers, and less degradation of the rollers. This has resulted in less wander of wires and will reduce costs by using less diamonds and less degradation of rollers. The main failure mechanism of wires - diamond pullout - has been minimized by using filler diamonds to …
Date:
August 1, 1980
Creator:
Schmid, F.; Khattak, C.P. & Basaran, M.
Object Type:
Report
System:
The UNT Digital Library
Radiological survey of the radioactive sands and residues at Lowman, Idaho
No uranium ore milling was performed at the Lowman site, which is located approximately 0.8 km northeast of the town of Lowman, Idaho. Nevertheless, approximately 80,000 metric tons of radioactive sands and residues from upgrading of heavy minerals by physical processing methods remain on the site grounds. Measurements of external gamma radiation 1 m above the surface showed exposure rates up to 2.4 mR/hr on site, but the exposure rate off site quickly dropped to the background level in all directions. Analysis of surface soil and sediment samples for /sup 226/Ra and /sup 232/Th indicated a limited spread of radioactive material.
Date:
August 1, 1980
Creator:
Haywood, F. F.; Burden, J. E.; Ellis, B. S.; Loy, E. T. & Shinpaugh, W. H.
Object Type:
Report
System:
The UNT Digital Library
Advanced materials for geothermal energy processes
The primary goal of the geothermal materials program is to ensure that the private sector development of geothermal energy resources is not constrained by the availability of technologically and economically viable materials of construction. This requires the performance of long-term high risk GHTD-sponsored materials R and D. Ongoing programs described include high temperature elastomers for dynamic sealing applications, advanced materials for lost circulation control, waste utilization and disposal, corrosion resistant elastomeric liners for well casing, and non-metallic heat exchangers. 9 refs.
Date:
August 1, 1985
Creator:
Kukacka, L. E.
Object Type:
Article
System:
The UNT Digital Library
Optimal Linfinity estimates for some Galerkin methods for the Dirichlet problem
Optimal L/sup infinity/ error estimates are established for a few different finite-element-type methods for the Dirichlet problem in a bounded domain. The methods are selected so as to avoid the necessity of imposing boundary conditions on the trial functions, usually difficult in practice. Three specific methods are treated. These are the method of interpolated boundary conditions and two methods of Nitsche. The trial spaces, S/sup h/, consist of continuous piecewise polynomials of degree less than or equal to K-1 with K greater than 2. The model problem treated is -..delta.. ..-->.. u = f in ..cap omega.., u = 0 on delta..cap omega.., ..cap omega.. contained in R/sup 2/. For each method, an approximate solution, u/sup h/, is constructed for h sufficiently small. The main result of this report states that the following error estimate holds for each method: norm (u--u/sup h/)/sub L/sup infinity/(..cap omega..)/ less than or equal to Ch/sup K/norm(u)/sub W/sub infinity//sup K/(..cap omega..)/.
Date:
August 1, 1977
Creator:
Goldstein, C I & Scott, R
Object Type:
Report
System:
The UNT Digital Library
Studies of heavy ion reactions and transuranic nuclei. Progress report, June 1, 1976--August 31, 1977. [Summaries of research activities at University of Rochester]
Separate abstracts were prepared for the 12 papers. (JFP)
Date:
August 1, 1977
Creator:
Huizenga, J. R.
Object Type:
Report
System:
The UNT Digital Library
Energy and technology review
Three areas of research are discussed: microcomputer technology applied to inspecting machined parts to determine roundness in ultraprecision measurements; development of an electrolytic technique for preparing dinitrogen pentoxide as a potentially less expensive step in the large-scale synthesis of the explosive HMX; and the application of frequency conversion to short wavelengths in the Novette and Nova lasers to improve the performance of inertial-confinement fusion targets. (GHT)
Date:
August 1, 1982
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Cryogenic recovery analysis of forced flow supercritical helium cooled superconductors
A coupled heat conduction and fluid flow method of solution was presented for cryogenic stability analysis of cabled composite superconductors of large scale magnetic coils. The coils are cooled by forced flow supercritical helium in parallel flow channels. The coolant flow reduction in one of the channels during the spontaneous recovery transient, after the conductor undergoes a transition from superconducting to resistive, necessitates a parallel channel analysis. A way to simulate the parallel channel analysis is described to calculate the initial channel inlet flow rate required for recovery after a given amount of heat is deposited. The recovery capability of a NbTi plus copper composite superconductor design is analyzed and the results presented. If the hydraulics of the coolant flow is neglected in the recovery analysis, the recovery capability of the superconductor will be over-predicted.
Date:
August 1, 1977
Creator:
Lee, A. Y.
Object Type:
Article
System:
The UNT Digital Library
Doppler Broadening of the Low Energy Total Neutron Cross Section of Pu-241
None
Date:
August 1, 1961
Creator:
Simpson, O. D. & Marshall, N. H.
Object Type:
Report
System:
The UNT Digital Library
Wire rope improvement program. Fiscal years 1979 to 1980. Interim report
This report describes the work performed by the Pacific Northwest Laboratory and its subcontractor Battelle Columbus Laboratories on the Wire Rope Improvement Program during FY-1979 and the first half of FY80. The program, begun in 1975 by the US Bureau of Mines, was transferred to the US Department of Energy (DOE) on October 1, 1978. Since that time, the DOE's Division of Solid Fuels Mining and Preparation has sponsored the program. To address identified problems and provide information from which behavior of large-diameter wire rope could be better understood, efforts in the following areas were undertaken: large-diameter rope testing, small-diameter rope testing, data analysis and evaluation, wear and failure analysis, load sensor development, and technology transfer. Wire ropes 3/4 in., 1-1/2 in., and 3 in. in diameter were tested in bend-over sheave fatigue. Attempts were made to correlate fatigue life of these ropes. Limited field rope data were available to compare with test results. The modes of failure and wear in laboratory ropes were compared with those seen previously in field ropes. A load sensor was designed and ordered in FY79. It will be connected to the drag rope and jewelry of working draglines during the summer of FY80. Technology …
Date:
August 1, 1980
Creator:
Morgenstern, M. H.; Alzheimer, J. M.; Anderson, W. E.; Beeman, G. H.; Rice, R.C.; Strope, L. A. et al.
Object Type:
Report
System:
The UNT Digital Library
Dose-rate conversion factors for external exposure to photons and electrons
Dose-rate conversion factors for external exposure to photons and electrons have been calculated for approximately 500 radionuclides of potential importance in environmental radiological assessments. The dose-rate factors were obtained using the DOSFACTER computer code. The results given in this report incorporate calculation of electron dose-rate factors for radiosensitive tissues of the skin, improved estimates of organ dose-rate factors for photons, based on organ doses for monoenergetic sources at the body surface of an exposed individual, and the spectra of scattered photons in air from monoenergetic sources in an infinite, uniformly contaminated atmospheric cloud, calculation of dose-rate factors for other radionuclides in addition to those of interest in the nuclear fuel cycle, and incorporation of updated radioactive decay data for all radionuclides. Dose-rate factors are calculated for three exposure modes - immersion in contaminated air, immersion in contaminated water, and exposure at a height of 1 m above a contaminated ground surface. The report presents the equations used to calculate the external dose-rate factors for photons and electrons, documentation of the revised DOSFACTER computer code, and a complete tabulation of the calculated dose-rate factors. 30 refs., 12 figs.
Date:
August 1, 1981
Creator:
Kocher, David C.
Object Type:
Report
System:
The UNT Digital Library
Reactor Development Program Progress Report (for) July 1961
A summary is presented of activities in reactor and general engineering research programs. Discussions are included for developments in EBWR, BORAX-V, ZPR-III. ZPR-VI, ZPR-IX, EBR-I, and EBR-II. Reactor safety studies were performed for fast and thermal reactors. Nuclear technology developments are discussed for applied nuclear and reactor physics, reactor fuels and materials development, heat engineering studies, separations processes, and advanced reactor concepts. (B.O.G.)
Date:
August 15, 1961
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library