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Measurement of energy deposited by charged-particle beams in composite targets

Description: We have measured the energy deposited in two types of composite targets by a number of charged-particle beams: targets made of /sup 238/U, Lucite, and polyethylene were exposed to 0.26-GeV protons and 0.33-GeV deuterons, and aluminum-Lucite composites were exposed to 0.5-GeV electrons. In addition, we measured neutrons and gamma rays emitted from solid targets of various materials (including /sup 238/U and iron) exposed to 0.26-GeV protons and 0.33-GeV deuterons. We used passive detectors (ther… more
Date: July 2, 1980
Creator: Farley, E.; Becker, J.; Crase, K.; Howe, R. & Selway, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Analysis of oxygen on and in beryllium using 2 MeV helium ions

Description: Analysis of oxygen on beryllium can be routinely performed using helium-ion backscattering (RBS). However, determination of the bulk oxygen concentration by this technique is limited to about 350 atomic parts per million (appM). We have performed simultaneous RBS and particle-induced x-ray emission (PIXE) measurements to improve the detection limit for bulk oxygen. The RBS measurements allowed determination of the surface oxygen before and after in-situ sputter cleaning by argon ions in an ultr… more
Date: October 2, 1986
Creator: Musket, R.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Piqua Nuclear Power Facility Radiological Surveillance Program

Description: Results of the annual radiological survey of the retired Piqua Nuclear Facility in Piqua, Ohio are presented in this report. The overall survey did not reveal the existence of any significant changes within the facility. This survey marked the inception of a surface soil sampling program. Analysis of the soil revealed that concentrations of radioactivity are comparable to those found at other locations in Ohio. (DMC)
Date: March 2, 1982
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Enhanced durability and reactivity for zinc ferrite desulfurization sorbent

Description: AMAX Research Development Center (AMAX R D) has been investigating methods for enhancing the reactivity and durability of the zinc ferrite desulfurization sorbent. Zinc ferrite sorbents are intended for use in desulfurization of hot coal gas in integrated gasification combined cycle (IGCC) or molten carbonate fuel cell (MCFC) applications. For the present program, the reactivity of the sorbent may be defined as its sulfur sorption capacity at the breakthrough point and at saturation in a bench-… more
Date: May 2, 1989
Creator: Jha, M. C. & Berggren, M. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Enhanced Durability and Reactivity for Zinc Ferrite Desulfurization Sorbent

Description: AMAX Research Development Center (AMAX R D) has been investigating methods for enhancing the reactivity and durability of the zinc ferrite desulfurization sorbent. Zinc ferrite sorbents are intended for use in desulfurization of hot coal gas in integrated gasification combined cycle (IGCC) or molten carbonate fuel cell (MCFC) applications. For the present program, the reactivity of the sorbent may be defined as its sulfur sorption capacity at the breakthrough point and at saturation in a bench-… more
Date: May 2, 1989
Creator: Silaban, A. & Harrison, D.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Recovery and reuse of asphalt roofing waste. Final report

Description: Burning of asphalt roofing waste as a fuel and incorporating asphalt roofing waste in bituminous paving were identified as the two outstanding resource recovery concepts out of ten studied. Four additional concepts might be worth considering under different market or technical circumstances. Another four concepts were rated as worth no further consideration at this time. This study of the recovery of the resource represented in asphalt roofing waste has identified the sources and quantities of … more
Date: February 2, 1984
Creator: Desai, S.; Graziano, G. & Shepherd, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fusion power demonstration - a baseline for the mirror engineering test reactor

Description: Developing a definition of an engineering test reactor (ETR) is a current goal of the Office of Fusion Energy (OFE). As a baseline for the mirror ETR, the Fusion Power Demonstration (FPD) concept has been pursued at Lawrence Livermore National Laboratory (LLNL) in cooperation with Grumman Aerospace, TRW, and the Idaho National Engineering Laboratory. Envisioned as an intermediate step to fusion power applications, the FPD would achieve DT ignition in the central cell, after which blankets and p… more
Date: December 2, 1983
Creator: Henning, C. D.; Logan, B. G.; Neef, W. S.; Dorn, D.; Clarkson, I. R.; Carpenter, T. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Transducer characterization

Description: This report has been prepared specifically for ultrasonic transducer users within the Nondestructive Testing Evaluation (NDE) community of the weapons complex. The purpose of the report is to establish an initial set of uniform procedures for measuring and recording transducer performance data, and to establish a common foundation on which more comprehensive transducer performance evaluations may be added as future transducer performance criteria expands. Transducer parameters and the problems … more
Date: July 2, 1980
Creator: Cross, B. T.; Eoff, J. M.; Schuetz, L. J. & Cunningham, K. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radiation-induced electrical breakdown of helium in fusion reactor superconducting magnet systems

Description: A comprehensive theoretical study has been performed on the reduction of the electrical breakdown potential of liquid and gaseous helium under neutron and gamma radiation. Extension of the conventional Townsend breakdown theory indicates that radiation fields at the superconducting magnets of a typical fusion reactor are potentially capable of significantly reducing currently established (i.e., unirradiated) helium breakdown voltages. Emphasis is given to the implications of these results inclu… more
Date: December 2, 1983
Creator: Perkins, L.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Calculation of density profiles in tandem mirrors fueled by pellets

Description: We have modified the LLNL radial transport code TMT to model reactor regime plasmas, fueled by pellets. The source profiles arising from pellet fueling are obtained from existing pellet ablation models. Because inward radial diffusion due to inverted profiles must compete with trapping of central cell ions in the transition region for tandem mirrors, pellets must penetrate fairly far into the plasma. In fact, based on our radial calculations, a pellet with a velocity of 10 km/sec cannot sustain… more
Date: December 2, 1983
Creator: Campbell, R. B. & Gilmore, J. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Milliwatt generator heat source. Progress report, July-December 1983

Description: All LANL hardware requirements were met during the reporting period as scheduled. Lot 12 of T-111 alloy sheet and Lot 8 of yttrium platelets were procured to meet future WR production needs. The GEND IP schedule requirements for 49 fueled MC2893 heat sources were met. Pressure burst surveillance activities continued to be conducted in accordance with SNLA document BB328965. Final results of evaluations of two pressure-burst capsules were normal, suggesting that the corresponding heat sources sh… more
Date: March 2, 1984
Creator: Mershad, E.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Seismic Safety Margins Research Program: Phase II program plan (FY 83-FY 84)

Description: The Seismic Safety Margins Research Program (SSMRP) is an NRC-funded, multiyear program conducted by Lawrence Livermore National Laboratory (LLNL). Its goal is to develop a complete, fully coupled analysis procedure (including methods and computer codes) for estimating the risk of an earthquake-caused radioactive release from a commercial nuclear power plant. The analysis procedure is based upon a state-of-the-art evaluation of the current seismic analysis and design process and explicitly incl… more
Date: August 2, 1982
Creator: Bohn, M. P.; Bernreuter, D. L.; Cover, L. E.; Johnson, J. J.; Shieh, L. C.; Shukla, S. N. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Recent results of studies of acceleration of compact toroids

Description: The observed gross stability and self-contained structure of compact toroids (CT's) give rise to the possibility, unique among magnetically confined plasmas, of translating CT's from their point of origin over distances many times their own length. This feature has led us to consider magnetic acceleration of CT's to directed kinetic energies much greater than their stored magnetic and thermal energies. A CT accelerator falls in the very broad gap between traditional particle accelerators at one… more
Date: March 2, 1984
Creator: Hammer, J. H.; Hartman, C. W. & Eddleman, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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High-power pulsed lasers

Description: The ideas that led to the successful construction and operation of large multibeam fusion lasers at the Lawrence Livermore Laboratory are reviewed. These lasers are based on the use of Nd:glass laser materials. However, most of the concepts are applicable to any laser being designed for fusion experimentation. This report is a summary of lectures given by the author at the 20th Scottish University Summer School in Physics, on Laser Plasma Interaction. This report includes basic concepts of the … more
Date: April 2, 1980
Creator: Holzrichter, J.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Dissociative recombination of interstellar ions: electronic structure calculations for HCO/sup +/

Description: The present study of the interstellar formyl ion HCO/sup +/ is the first attempt to investigate dissociative recombination for a triatomic molecular ion using an entirely theoretical approach. We describe a number of fairly extensive electronic structure calculations that were performed to determine the reaction mechanism of the e-HCO/sup +/ process. Similar calculations for the isoelectronic ions HOC/sup +/ and HN/sub 2//sup +/ are in progress. 60 refs.
Date: July 2, 1985
Creator: Kraemer, W.P. & Hazi, A.U.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Recent upgrading of the modelling program COMFORT

Description: The computer code COMFORT, developed for the online control of machine functions at the SLC, has recently undergone several modifications to overcome some of its limitations. This note describes the reasons for these changes, the methods employed, some test results and the applications of the new version of the program.
Date: September 2, 1986
Creator: Hawkes, C. & Lee, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Thermal Regimes of Major Volcanic Centers: Magnetotelluric Constraints

Description: The interpretation of geophysical/electromagnetic field data has been used to study dynamical processes in the crust beneath three of the major tectono-volcanic features in North America: the Long Valley/Mono Craters Volcanic Complex in eastern California, the Cascades Volcanic Belt in Oregon, and the Rio Grande Rift in the area of Socorro, New Mexico. Primary accomplishments have been in the area of creating and implementing a variety of 2-D generalized inverse computer codes, and the applicat… more
Date: October 2, 1989
Creator: Hermance, J. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Solution of the Field Equations for 2-D Electromagnetic Direct Implicit Plasma Simulation

Description: A direct implicit particle-in-cell (PIC) simulation model with full electromagnetic (EM) effects has been implemented in 2-D Cartesian geometry. The model, implemented with the D/sub 1/ time differencing scheme, was first implemented in a 1-D electrostatic (ES) version to gain some experience with spatial differencing in forms suitable for extension to the full EM field in two dimensions. The implicit EM field solve is considerably different from the implicit ES code. The EM field calculation r… more
Date: January 2, 1985
Creator: Hewett, D. W. & Langdon, A. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Seismic hazard analysis for the NTS spent reactor fuel test site

Description: An experiment is being directed at the Nevada Test Site to test the feasibility for storage of spent fuel from nuclear reactors in geologic media. As part of this project, an analysis of the earthquake hazard was prepared. This report presents the results of this seismic hazard assessment. Two distinct components of the seismic hazard were addressed: vibratory ground motion and surface displacement. (ACR)
Date: May 2, 1980
Creator: Campbell, K.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Materials selection of surface coatings in an advanced size reduction facility. [For decommissioned stainless steel equipment]

Description: A materials selection test program was conducted to characterize optimum interior surface coatings for an advanced size reduction facility. The equipment to be processed by this facility consists of stainless steel apparatus (e.g., glove boxes, piping, and tanks) used for the chemical recovery of plutonium. Test results showed that a primary requirement for a satisfactory coating is ease of decontamination. A closely related concern is the resistance of paint films to nitric acid - plutonium en… more
Date: June 2, 1980
Creator: Briggs, J. L. & Younger, A. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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RTNS-II targets: cooling channel collapse under simulated bonding conditions

Description: We experimentally determined the pressure limits that can be used to autoclave-bond RTNS-II targets without crushing the internal cooling channels. The maximum pressures are 40 to 55 MPa (6 to 8 ksi) in the 300-to-450/sup 0/C temperature regime.
Date: April 2, 1981
Creator: Ludemann, W.D.; Brady, R.L. & Schumacher, B.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Incorporation of a circular boundary condition into the program POISSON

Description: Two-dimensional problems in electrostatics or magnetostatics frequently are solved numerically by means of relaxation techniques. In many such problems the ''sources'' (charges or currents, and regions of permeable material) lie exclusively within a finite closed boundary curve and the relaxation process in principle then could be confined to the region interior to such a boundary - provided a suitable boundary condition is imposed onto the solution at that boundary. The present notes discuss a… more
Date: March 2, 1984
Creator: Caspi, S.; Helm, M. & Laslett, L.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigations of glass structure using fluorescence line narrowing and moleuclar dynamics simulations

Description: The local structure at individual ion sites in simple and multicomponent glasses is simulated using methods of molecular dynamics. Computer simulations of fluoroberyllate glasses predict a range of ion separations and coordination numbers that increases with increasing complexity of the glass composition. This occurs at both glass forming and glass modifying cation sites. Laser-induced fluorescence line-narrowing techniques provide a unique probe of the local environments of selected subsets of… more
Date: July 2, 1982
Creator: Weber, M. J. & Brawer, S. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Interim report on concreted uranium fines and chips billet curing tests: a basis for resuming shipment of concreted uranium scrap billets

Description: Through extensive testing and analyses of the concretion process, billets and shipping conditions, it has been determined that properly cured concreted billets can be safely shipped to National Lead Company of Ohio (NLO), Fernald. During curing, billets will be dried for 26 days prior to shipment with the last 10 days between 54 to 66/sup 0/C (130 to 150/sup 0/F). Such dried billets can withstand temperatures up to 85/sup 0/C (185/sup 0/F). The maximum billet temperature that can be expected to… more
Date: May 2, 1980
Creator: Weakley, E.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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