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Neutral Beam Injection for Plasma and Magnetic FieldDiagnostics

Description: At the Lawrence Berkeley National Laboratory (LBNL) adiagnostic neutral beam injection system for measuring plasma parameters,flow velocity, and local magnetic field is being developed. High protonfraction and small divergence is essential for diagnostic neutral beams.In our design, a neutral hydrogen beam with an 8 cm x 11 cm (or smaller)elliptical beam spot at 2.5 m from the end of the extraction column isproduced. The beam will deliver up to 5 A of hydrogen beam to the targetwith a pulse wid… more
Date: August 1, 2007
Creator: Vainionpaa, Jaakko Hannes; Leung, Ka Ngo; Kwan, Joe W. & Levinton,Fred
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Computational Neutronics Methods and Transmutation Performance Analyses for Fast Reactors

Description: The once-through fuel cycle strategy in the United States for the past six decades has resulted in an accumulation of Light Water Reactor (LWR) Spent Nuclear Fuel (SNF). This SNF contains considerable amounts of transuranic (TRU) elements that limit the volumetric capacity of the current planned repository strategy. A possible way of maximizing the volumetric utilization of the repository is to separate the TRU from the LWR SNF through a process such as UREX+1a, and convert it into fuel for a f… more
Date: March 1, 2007
Creator: Ferrer, R.; Asgari, M.; Bays, S. & Forget, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Role of Fluid Pressure in the Production Behavior of EnhancedGeothermal Systems with CO2 as Working Fluid

Description: Numerical simulation is used to evaluate mass flow and heatextraction rates from enhanced geothermal injection-production systemsthat are operated using either CO2 or water as heat transmission fluid.For a model system patterned after the European hot dry rock experimentat Soultz, we find significantly greater heat extraction rates for CO2 ascompared to water. The strong dependence of CO2 mobility (=density/viscosity) upon temperature and pressure may lead to unusualproduction behavior, where h… more
Date: April 13, 2007
Creator: Pruess, Karsten
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chemical properties of the transactinide elements studied inliquid phase with SISAK

Description: This article starts with a review of the current SISAKliquid-liquid extraction system, as used after the physical preseparatorBGS at LBNL for chemical studies of transactinide elements. Emphasis willbe on new additions and developments. Then the possibilities offered bythe new TASCA separator at GSI and the use of actinide targets at bothGSI and LBNL are discussed with respect to future SISAK transactinideexperiments. Finally, current and future liquid-liquid extraction systemsfor studying elem… more
Date: May 1, 2007
Creator: Omtvedt, J. P.; Alstad, J.; Bjornstad, T.; Dullmann, Ch.E.; Gregorich, K.E.; Hoffman, D.C. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Tetraalkylphosphonium Polyoxometalates as Novel Ionic Liquids.

Description: The pairing of a Lindqvist or Keggin polyoxometalate (POM) anion with an appropriate tetraalkylphosphonium cation, [R{sub 3}R{prime}P]{sup +}, has been shown to yield an original family of ionic liquids (POM-ILs), among them salts liquid at or near ambient temperature. The physicochemical properties of several such 'inorganic liquids', in particular their thermal properties, suggests the possible application of these compounds as robust, thermally-stable solvents for liquid-liquid extraction. A… more
Date: November 30, 2007
Creator: Dietz, M. L.; Rickert, P. G.; Antonio, M. R.; Firestone, M. A.; Wishart, J. F. & Szreder, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Enhanced Geothermal Systems (EGS) comparing water with CO2 as heattransmission fluids

Description: This paper summarizes our research to date into operatingEGS with CO2. Our modeling studies indicate that CO2 would achieve morefavorable heat extraction than aqueous fluids. The peculiarthermophysicalproperties of CO2 give rise to unusual features in the dependence ofenergy recovery on thermodynamic conditions and time. Preliminarygeochemical studies suggest that CO2 may avoid unfavorable rock-fluidinteractions that have been encountered in water-basedsystems. To morefully evaluate the potenti… more
Date: November 1, 2007
Creator: Pruess, Karsten
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Clean-in-Place and Reliability Testing of a Commercial 12.5-cm Annular Centrifugal Contactor at the INL

Description: The renewed interest in advancing nuclear energy has spawned the research of advanced technologies for recycling nuclear fuel. A significant portion of the advanced fuel cycle includes the recovery of selected actinides by solvent extraction methods utilizing centrifugal contactors. Although the use of centrifugal contactors for solvent extraction is widely known, their operation is not without challenges. Solutions generated from spent fuel dissolution contain unknown quantities of undissolved… more
Date: September 1, 2007
Creator: Mann, N. R.; Garn, T. G.; Meikrantz, D. H.; Law, J. D. & Todd, T. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Characterization of Direct-Push Vadose Zone Sediments from the 241-B and 241-BX Tank Farms

Description: Geochemical tests provide evidence for the transit of a plume of caustic waste solution through the sediment column at the Hanford 241-B and -BX Tank Farms. Direct-push samples recovered from boreholes surrounding Tanks 241-B-110 and 241-BX-102 and related waste transfer lines and diversion boxes included sediments typical of those previously recovered from other localities on the Hanford Site. The Hanford formation sediments are dominantly quartzo-feldspathic sands strewn with lithic fragments… more
Date: December 21, 2007
Creator: Brown, Christopher F.; Icenhower, Jonathan P.; Um, Wooyong; Bjornstad, Bruce N.; Valenta, Michelle M.; Iovin, Cristian et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Simulation Studies on the Vertical Emittance Growth in the ATF Extraction Beam line

Description: Significant dependence of the vertical emittance growth on the beam intensity was experimentally observed at the ATF/KEK extraction beamline. This technical note describes the simulations of possible vertical emittance growth sources, particularly in the extraction channel, where the magnets are shared by both the ATF extraction beamline and its damping ring. The vertical emittance growth is observed in the simulations by changing the beam orbit in the extraction channel even with all optics co… more
Date: December 18, 2007
Creator: Zhou, F.; Amann, J.; Selestiky, S.; Seryi, A.; Spencer, C. & Woodley, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fast Reactor Alternative Studies: Effects of Transuranic Groupings on Metal and Oxide Sodium Fast Reactor Designs

Description: A 1000 MWth commercial-scale Sodium Fast Reactor (SFR) design with a conversion ratio (CR) of 0.50 was selected in this study to perform perturbations on the external feed coming from Light Water Reactor Spent Nuclear Fuel (LWR SNF) and separation groupings in the reprocessing scheme. A secondary SFR design with a higher conversion ratio (CR=0.75) was also analyzed as a possible alternative, although no perturbations were applied to this model.
Date: September 1, 2007
Creator: Ferrer, R.; Asgari, M.; Bays, S. & Forget, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Injection and Extraction Lines for the ILC Damping Rings

Description: The current design for the injection and extraction linesintoand out of the ILC Damping Rings is presented as well as the designfor the abort line. Due to changes of the geometric boundary conditionsby other subsystems of the ILC, a modular approach has been used to beable to respond to recurring layout changes whilereusing previouslydesigned parts.
Date: June 20, 2007
Creator: Reichel, Ina
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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DEVELOPMENT OF AN IMPROVED SODIUM TITANATE FOR THE PRETREATMENT OF HIGH LEVEL NUCLEAR WASTE AT THE SAVANNAH RIVER SITE

Description: High-level nuclear waste produced from fuel reprocessing operations at the Savannah River Site (SRS) requires pretreatment to remove Cs-137, Sr-90 and alpha-emitting radionuclides (i.e., actinides) prior to disposal onsite as low level waste. Separation processes planned at SRS include sorption of Sr-90 and alpha-emitting radionuclides onto monosodium titanate (MST) and caustic side solvent extraction, for {sup 137}Cs removal. The predominant alpha-emitting radionuclides in the highly alkaline … more
Date: November 15, 2007
Creator: Hobbs, D
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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On the production behavior of enhanced geothermal systems with CO2as working fluid

Description: Numerical simulation is used to evaluate mass flow and heatextraction rates from enhanced geothermal injection-production systemsthat are operated using either CO2 or water as heat transmission fluid.For a model system patterned after the European hot dry rock experimentat Soultz, we find significantly greater heat extraction rates for CO2 ascompared to water. The strong dependence of CO2 mobility (=density/viscosity) upon temperature and pressure may lead to unusualproduction behavior, where h… more
Date: May 31, 2007
Creator: Pruess, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Fast Extraction Kicker for the Accelerator Test Facility

Description: We present the results of a study for the design of a fastextraction kicker to be installed in the Accelerator Test Facility ringat KEK. This activity is carried on in the framework of the ATF2 project,which will be built on the KEK Tsukuba campus as an extension of theexisting ATF, taking advantage of the world s smallest normalizedemittance achieved there. ATF2's primary goal is to operate as a testfacility and establish the hardware and beam handling technologiesenvisaged for the Internation… more
Date: June 20, 2007
Creator: De Santis, Stefano; Urakawa, Junji & Naito, Takashi
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Shape memory polymers based on uniform aliphatic urethane networks

Description: Aliphatic urethane polymers have been synthesized and characterized, using monomers with high molecular symmetry, in order to form amorphous networks with very uniform supermolecular structures which can be used as photo-thermally actuable shape memory polymers (SMPs). The monomers used include hexamethylene diisocyanate (HDI), trimethylhexamethylenediamine (TMHDI), N,N,N{prime},N{prime}-tetrakis(hydroxypropyl)ethylenediamine (HPED), triethanolamine (TEA), and 1,3-butanediol (BD). The new polym… more
Date: January 19, 2007
Creator: Wilson, T S; Bearinger, J P; Herberg, J L; Marion III, J E; Wright, W J; Evans, C L et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Actinide Thermodynamics at Elevated Temperatures

Description: The postclosure chemical environment in the proposed Yucca Mountain repository is expected to experience elevated temperatures. Predicting migration of actinides is possible if sufficient, reliable thermodynamic data on hydrolysis and complexation are available for these temperatures. Data are scarce and scattered for 25 degrees C, and nonexistent for elevated temperatures. This collaborative project between LBNL and PNNL collects thermodynamic data at elevated temperatures on actinide complexe… more
Date: November 16, 2007
Creator: Friese, Judah I.; Rao, Linfeng; Xia, Yuanxian; Bachelor, Paula P. & Tian, Guoxin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Separation of Lanthanide Ions with Kläui Ligand Resin

Description: Separation and pre-concentration of the desired analyte is often a critical step in many radioanalytical methods. Current procedures for separating and concentrating analytes for detection are complex, and can be both expensive and time consuming. Therefore, the purpose of this research is to develop an alternative method of separating lanthanide ions through the use of an extraction chromatography resin containing a Klaui ligand salt. This research is a continuation of a concerted effort to de… more
Date: July 1, 2007
Creator: Granger, Trinity D.; Henry, Victoria A. & Latesky, Stanley
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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EVALUATION OF FLOWSHEET CHANGES FOR THE HIGHLY ENRICHED URANIUM BLENDDOWN PROGRAM

Description: H Canyon is considering a flowsheet change for Plutonium (Pu) Contaminated Scrap (PuCS) material. The proposed change is to route dissolved PuCS material directly to a uranium (U) storage tank. As a result, the PuCS solution will bypass Head End and First U Cycle, and will be purified by solvent extraction in Second U Cycle. The PuCS solution contains appreciable amounts of boron (B) and fluoride (F{sup -}), which are currently at trace levels in the U storage tank. Though unlikely, if the B co… more
Date: October 22, 2007
Creator: Crowder, M.; Rudisill, T.; Laurinat, J. & Mickalonis, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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TUNGSTEN SHIELDS FOR CS-137 INLINE MONITORS IN THE CAUSTIC SIDE SOLVENT EXTRACTION PROCESS

Description: The Department of Energy (DOE) selected Caustic-Side Solvent Extraction (CSSX) as the preferred technology for the removal of radioactive cesium from High-Level Waste (HLW) at the Savannah River Site (SRS). The CSSX process is a continuous process that uses a novel solvent to extract cesium from highly radioactive waste and concentrate it in dilute nitric acid. In-line analyses are performed with gamma-ray monitors to measure the C-137 concentration in the decontaminated salt solution (DSS) and… more
Date: May 10, 2007
Creator: Casella, V; Mark Hogue, M; Javier Reyes-Jimenez, J; Paul Filpus-Luyckx, P; Timothy Riley, T; Fred Ogden, F et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Side extraction duoPIGatron-type ion source.

Description: We have designed and constructed a compact duoPIGatron-type ion source, for possible use in ion implanters, in such the ion can be extracted from side aperture in contrast to conventional duoPIGatron sources with axial ion extraction. The size of the side extraction aperture is 1x40 mm. The ion source was developed to study physical and technological aspects relevant to an industrial ion source. The side extraction duoPIGatron has stable arc, uniformly bright illumination, and dense plasma. The… more
Date: August 26, 2007
Creator: Gushenets, V. I.; Oks, E. M.; Herschovitch, A. & Johnson, B. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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RAPID METHOD FOR PLUTONIUM, AMERICIUM AND CURIUM IN VERY LARGE SOIL SAMPLES

Description: The analysis of actinides in environmental soil and sediment samples is very important for environmental monitoring. There is a need to measure actinide isotopes with very low detection limits. A new, rapid actinide separation method has been developed and implemented that allows the measurement of plutonium, americium and curium isotopes in very large soil samples (100-200 g) with high chemical recoveries and effective removal of matrix interferences. This method uses stacked TEVA Resin{reg_si… more
Date: January 8, 2007
Creator: Maxwell, S
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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THERMAL AND SPECTROSCOPIC ANALYSES OF CAUSTIC SIDE SOLVENT EXTRACTION SOLVENT CONTACTED WITH 1 MOLARAND 3 MOLAR NITRIC ACID

Description: Thermal and spectroscopic analyses were performed on multiple layers formed from contacting Caustic Side Solvent Extraction (CSSX) solvent with 1 M or 3 M nitric acid. A slow chemical reaction occurs (i.e., over several weeks) between the solvent and 1 M or 3 M nitric acid as evidenced by color changes and the detection of nitro groups in the infrared spectrum of the aged samples. Thermal analysis revealed that decomposition of the resulting mixture does not meet the definition of explosive or … more
Date: July 23, 2007
Creator: Fondeur, F; David Hobbs, D & Samuel Fink, S
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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FLAMMABILITY AND CONSEQUENCE ANALYSIS FOR MCU WASTE TANKS

Description: The Savannah River Site of Department of Energy will use the new Modular Caustic Side Solvent Extraction Unit (MCU) to process the waste stream by removing/reducing Cs-137 using Caustic Side Solvent Extraction (CSSX) technology. The CSSX technology utilizes multicomponent organic solvent and annular centrifugal contactors to extract Cs-137 from waste salt solution. Due to the radiolysis of the aqueous nuclear wastes, hydrogen generation is expected in the MCU holding tanks. The hydrogen from ra… more
Date: February 13, 2007
Creator: Knight, J & Mukesh Gupta, M
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Partner: UNT Libraries Government Documents Department
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Flowsheet Testing of the Fission Product Extraction Process as Part of Advanced Aqueous Reprocessing

Description: As part of the Advanced Fuel Cycle Initiative (AFCI), the reduction in volume and heat generation of spent nuclear fuel requiring geologic disposal is currently being addressed. The goal is to optimize utilization of the nation’s first repository and potentially reduce or eliminate the need for additional repositories. This will be achieved through separating long-lived, highly toxic elements, reducing high-level waste volumes and the toxicity of spent nuclear fuel, and reducing the heat genera… more
Date: June 1, 2007
Creator: Law, Jack; Peterman, Dean R.; Riddle, catherine; Meikrantz, David H. & Todd, Terry
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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