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Electrochemical photovoltaic cells/stabilization and optimization of II-VI semiconductors. First technical progress report, 15 April 1980-30 June 1980

Description: The overall goal of this program is to provide the basis for designing a practical electrochemical solar cell based on the II-VI compound semiconductors. Emphasis is on developing new electrolyte redox systems and electrode surface modifications which will stabilize the II-VI compounds against photodissolution without seriously degrading the long-term solar response. The bulk electrode material properties are also being optimized to provide the maximum solar conversion efficiency and greatest i… more
Date: July 20, 1980
Creator: Noufi, R.; Tench, D. & Warren, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Formation of Pillars at the Boundaries between HII Regions and Molecular Clouds

Description: We investigate numerically the hydrodynamic instability of an ionization front (IF) accelerating into a molecular cloud, with imposed initial perturbations of different amplitudes. When the initial amplitude is small, the imposed perturbation is completely stabilized and does not grow. When the initial perturbation amplitude is large enough, roughly the ratio of the initial amplitude to wavelength is greater than 0.02, portions of the IF temporarily separate from the molecular cloud surface, lo… more
Date: April 20, 2006
Creator: Mizuta, A.; Kane, J. O.; Pound, M. W.; Remington, B. A.; Ryutov, D. D. & Takabe, H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Mechanical Design and Analysis of a 200 MHz, Bolt-together RFQ forthe Accelerator Driven Neutron Source

Description: A high-yield neutron source to screen sea-land cargocontainers for shielded Special Nuclear Materials (SNM) has been designedat LBNL [1,2]. The Accelerator-Driven Neutron Source (ADNS) uses theD(d,n)3He reaction to create a forward directed neutron beam. Keycomponents are a high-current radio-frequency quadrupole (RFQ)accelerator and a high-power target capable of producing a neutron fluxof>107 n/(cm2 cdot s) at a distance of 2.5 m. The mechanical designand analysis of the four-module, bolt-tog… more
Date: June 20, 2007
Creator: Virostek, Steve; Hoff, Matt; Li, Derun; Staples, John & Wells,Russell
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Electrochemical photovoltaic cells stabilization and optimization of II-VI semiconductors. Third technical progress report, 1 October 1980 to 31 December 1980

Description: A program to provide the basis for designing a practical electrochemical solar cell based on the II-VI compound semiconductors is described. Emphasis is on developing new electrolyte redox systems and electrode surface modifications which will stabilize the II-VI compounds against photodissolution without seriously degrading the long-term solar response. Work on redox couple stabilization of n-CdX photoanodes has focused on fast metal-based one-electron couples in various nonaqueous solvents wh… more
Date: January 20, 1981
Creator: Noufi, R.; Tench, D. & Warren, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Gyroelastic fluids

Description: A study is made of a scale model in three dimensions of a guiding center plasma within the purview of gyroelastic (also known as finite gyroradius-near theta pinch) magnetohydrodynamics. The (nonlinear) system sustains a particular symmetry called isorrhopy which permits the decoupling of fluid modes from drift modes. Isorrhopic equilibria are analyzed within the framework of geometrical optics resulting in (local) dispersion relations and ray constants. A general scheme is developed to evolve … more
Date: January 20, 1981
Creator: Kerbel, G. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nonlinear saturation of the trapped-ion mode by mode coupling in two dimensions

Description: A study of the nonlinear saturation by mode coupling of the dissipative trapped-ion mode is presented in which both radial and poloidal variations are considered. The saturation mechanism consists of the nonlinear coupling via E x B convection of energy from linearly unstable modes to stable modes. Stabilization is provided at short poloidal wavelengths by Landau damping from trapped and circulating ions, at short radial wavelengths by effects associated with the finite ion banana excursions an… more
Date: July 20, 1977
Creator: Cohen, B. I. & Tang, W. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Solidification of the Hanford Law Waste Stream Produced as a Result of Near-Tank Continuous Sludge Leaching and Sodium Hydroxide Recovery

Description: The U.S. Department of Energy (DOE), Office of River Protection (ORP), is responsible for the remediation and stabilization of the Hanford Site tank farms, including 53 million gallons of highly radioactive mixed wasted waste contained in 177 underground tanks. The plan calls for all waste retrieved from the tanks to be transferred to the Waste Treatment Plant (WTP). The WTP will consist of three primary facilities including pretreatment facilities for Low Activity Waste (LAW) to remove aluminu… more
Date: September 20, 2011
Creator: Reigel, M. M.; Johnson, F. C.; Crawford, C. & Jantzen, Carol M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

300 Area D4 Project 1st Quarter Fiscal Year 2006 Building Completion Report

Description: This report documents the deactivation, decontamination, decommissioning, and demolition of the MO-052, 3225, 334, 334A, and 334-TF Buildings in the 300 Area of the Hanford Site. The D4 of these facilities included characterization, engineering, removal of hazardous and radiologically contaminated materials, equipment removal, utility disconnection, deactivation, decontamination, demolition of the structure, and stabilization or removal of the remaining slab and foundation as appropriate.
Date: April 20, 2006
Creator: Smith, David S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Numerical Calculations Demonstrating Complete Stabilization of the Ideal Magnetohydrodynamic Resistive Wall Mode by Longitudinal Flow

Description: The cylindrical ideal magnetohydrodynamic (MHD) stability problem, including ow and a resistive wall, is cast in the standard mathematical form, ωA⋅x = B⋅x, without discretizing the vacuum regions surrounding the plasma. This is accomplished by means of a finite element expansion for the plasma perturbations, by coupling the plasma surface perturbations to the resistive wall using a Green's function approach, and by expanding the unknown vector, x, to include the perturbed current in the resist… more
Date: May 20, 2009
Creator: S. Smith, S.C. Jardin, J.P. Freidberg, L. Guazzotto
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Bacterial Biotransformations for the In situ Stabilization of Plutonium

Description: Plutonium contamination in the environment is generally low-level and may be present and transported in a range of forms (IV, V, VI). Current remediation strategies are costly, financially and in terms of increased exposure risk to people and the environment. In situ bacterial biostabilization is a promising alternative.
Date: April 20, 2005
Creator: Neu, Mary; Boukhalfa, Hakim; Icopini, Gary; Hersman, Larry; Lack, Joe; Priester, John et al.
Item Type: Refine your search to only Presentation
Partner: UNT Libraries Government Documents Department
open access

MHD-Stabilization of Axisymmetric Mirror Systems Using Pulsed ECRH

Description: This paper, part of a continuing study of means for the stabilization of MHD interchange modes in axisymmertric mirror-based plasma confinement systems, is aimed at a preliminary look at a technique that would employ a train of plasma pressure pulses produced by ECRH to accomplish the stabilization. The purpose of using sequentially pulsed ECRH rather than continuous-wave ECRH is to facilitate the localization of the heated-electron plasma pulses in regions of the magnetic field with a strong p… more
Date: November 20, 2009
Creator: Post, R F
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Enhanced Magnetism in Epitaxial SrRuO3 Thin Films

Description: We have observed enhanced magnetization in epitaxial SrRuO{sub 3} thin films compared to previously reported bulk and thin film values of 1.1-1.6 {mu}{sub B}/Ru ion. The degree of enhancement is strongly dependent on the lattice distortions imposed on the SrRuO{sub 3} films by SrTiO{sub 3}, (LaAlO{sub 3}){sub 0.3}(SrTaO{sub 3}){sub 0.7} (LSAT), and LaAlO{sub 3} substrates. A larger enhancement of magnetization for coherently strained SrRuO{sub 3} films on SrTiO{sub 3} and LSAT compared to fully… more
Date: November 20, 2009
Creator: Grutter, A.J.; Wong, F.; Arenholz, E.; Liberati, M.; Vailionis, A. & Suzuki, Y.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Novel interferometer spectrometer for sensitive stellar radial velocimetry

Description: We describe a new kind of stellar radial velocimeter based on the series combination of a wide angle Michelson interferometer and a disperser, and which we call a fringing spectrometer. The simplest instrument response of the interferometer produces smaller instrumental noise, and the low resolution requirements of the disperser allows high efficiency and creates an etendue capability which is two orders of magnitude larger than current radial velocimeters. The instrument is compact, inexpensiv… more
Date: May 20, 1999
Creator: Erskine, D & Ge, J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Evaluation of Need and Location for a Thermogravimetric Analyzer in the Plutonium Finishing Plant (PFP) Materials Stabilization

Description: This plan provides an analysis for locating a TGA to support PFP Thermal Stabilization processes. The scope of this document is to evaluate the need for, and location for, installation of a TGA system as a supplement to the SFE equipment for moisture measurement in pure oxides. A location assessment for the SFE equipment was previously performed (HNF 1999). Based on that assessment, co-location of the TGA system with the SFE system is the preferred option. This would enable thermally stabilized… more
Date: January 20, 2000
Creator: Willis, H. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fluor Hanford Nuclear Material Stabilization Project Welding Manual

Description: The purpose of this section of the welding manual is to: (1) Provide a general description of the major responsibilities of the organizations involved with welding. (2) Provide general guidance concerning the application of codes related to welding. This manual contains requirements for welding for all Fluor Hanford (FH) welding operators working on the W460 Project, in the Plutonium Finishing Plant (PFP) at the U. S. Department of Energy (DOE) Hanford facilities. These procedures and any addit… more
Date: October 20, 2000
Creator: BERKEY, J.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Testing Gyrokinetics on C-Mod and NSTX

Description: Quantitative benchmarks of computational physics codes against experiment are essential for the credible application of such codes. Fluctuation measurements can provide necessary critical tests of nonlinear gyrokinetic simulations, but such require extraordinary computational resources. Linear micro-stability calculations with the GS2 [1] gyrokinetic code have been carried out for tokamak and ST experiments which exhibit internal transport barriers (ITB) and good plasma confinement. Qualitative… more
Date: June 20, 2005
Creator: Redi, M. H.; Dorland, W.; Fiore, C. L.; Stutman, D.; Baumgaertel, J. A.; Davis, B. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Thermal Stabilization Blend Plan

Description: The Blend Plan was written to identify items stored outside of the 213 MBA that will be moved into the MBA for thermal stabilization processing. Product quality oxide items stored in our vaults are found in Appendix A. A table is included in Appendix A which details the isotopic values for the oxide items and calculates the amount of material of any specific run that can be placed in a product can and maintain the 15 watt limit to meet storage vault specifications. This Revision of the Blend Pl… more
Date: April 20, 2000
Creator: RISENMAY, H.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Plan for the Initiation of HA-211 Furnace Operations at the Plutonium Finishing Plan (PFP)

Description: This plan provides a phased approach authorizing the use of three additional muffle furnaces for thermal stabilization. Achievement of Thermal Stabilization mission elements require the installation and startup of three additional muffle furnaces for the thermal stabilization of plutonium and plutonium bearing materials at the Plutonium Finishing Plant (PFP). The release to operate these additional furnaces will require an Activity Based Startup Review. The conduct of the Activity Based Startup… more
Date: January 20, 2000
Creator: Willis, H. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nonlinear Dynamics of Ionization Fronts in HII Regions

Description: Hydrodynamic instability of an accelerating ionization front (IF) is investigated with 2D hydrodynamic simulations, including absorption of incident photoionizing photons, recombination in the HII region, and radiative molecular cooling. When the amplitude of the perturbation is large enough, nonlinear dynamics of the IF triggered by the separation of the IF from the cloud surface is observed. This causes the second harmonic of the imposed perturbation to appear on the cloud surfaces, whereas t… more
Date: April 20, 2006
Creator: Mizuta, A.; Kane, J. O.; Pound, M. W.; Remington, B. A.; Ryutov, D. D. & Takabe, H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Experimental Plan: Uranium Stabilization Through Polyphosphate Injection 300 Area Uranium Plume Treatability Demonstration Project

Description: This Test Plan describes a laboratory-testing program to be performed at Pacific Northwest National Laboratory (PNNL) in support of the 300-FF-5 Feasibility Study (FS). The objective of the proposed treatability test is to evaluate the efficacy of using polyphosphate injections to treat uranium contaminated groundwater in situ. This study will be used to: (1) Develop implementation cost estimates; (2) Identify implementation challenges; and (3) Investigate the technology's ability to meet remed… more
Date: September 20, 2006
Creator: Wellman, Dawn M.; Fruchter, Jonathan S. & Vermeul, Vince R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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