Phenomenology of Compressional Alfven Eigenmodes (open access)

Phenomenology of Compressional Alfven Eigenmodes

Coherent oscillations with frequency 0.3 {le} {omega}/{omega}{sub ci} {le} 1, are seen in the National Spherical Torus Experiment [M. Ono, S.M. Kaye, Y-K.M. Peng, et al., Nucl. Fusion 40, 557 (2000)]. This paper presents new data and analysis comparing characteristics of the observed modes to the model of compressional Alfven eigenmodes (CAE). The toroidal mode number has been measured and is typically between 7 < n < 9. The polarization of the modes, measured using an array of four Mirnov coils, is found to be compressional. The frequency scaling of the modes agrees with the predictions of a numerical 2-D code, but the detailed structure of the spectrum is not captured with the simple model. The fast ion distribution function, as calculated with the beam deposition code in TRANSP [R.V. Budny, Nucl. Fusion 34, 1247 (1994)], is shown to be qualitatively consistent with the constraints of the Doppler-shifted cyclotron resonance drive model. This model also predicts the observed scaling of the low frequency limit for CAE.
Date: May 13, 2004
Creator: Fredrickson, E. D.; Gorelenkov, N. N. & Menard, J.
Object Type: Report
System: The UNT Digital Library
INVESTIGATION OF THE COMBINED FAILURE OF A PRESSURE TUBE AND DEFECTED FUEL ROD IN PRTR (open access)

INVESTIGATION OF THE COMBINED FAILURE OF A PRESSURE TUBE AND DEFECTED FUEL ROD IN PRTR

None
Date: May 13, 1966
Creator: Freshley, M.D.; Wheeler, R.G.; Batch, J.M. & Hesson, G.M.
Object Type: Report
System: The UNT Digital Library
Hanford site transuranic waste sampling plan (open access)

Hanford site transuranic waste sampling plan

This sampling plan (SP) describes the selection of containers for sampling of homogeneous solids and soil/gravel and for visual examination of transuranic and mixed transuranic (collectively referred to as TRU) waste generated at the U.S. Department of Energy (DOE) Hanford Site. The activities described in this SP will be conducted under the Hanford Site TRU Waste Certification Program. This SP is designed to meet the requirements of the Transuranic Waste Characterization Quality Assurance Program Plan (CAO-94-1010) (DOE 1996a) (QAPP), site-specific implementation of which is described in the Hanford Site Transuranic Waste Characterization Program Quality Assurance Project Plan (HNF-2599) (Hanford 1998b) (QAPP). The QAPP defines the quality assurance (QA) requirements and protocols for TRU waste characterization activities at the Hanford Site. In addition, the QAPP identifies responsible organizations, describes required program activities, outlines sampling and analysis strategies, and identifies procedures for characterization activities. The QAPP identifies specific requirements for TRU waste sampling plans. Table 1-1 presents these requirements and indicates sections in this SP where these requirements are addressed.
Date: May 13, 1999
Creator: GREAGER, T.M.
Object Type: Report
System: The UNT Digital Library
Octupole and hexadecapole bands in 152Sm (open access)

Octupole and hexadecapole bands in 152Sm

The nucleus {sup 152}Sm is characterized by a variety of low-energy collective modes, conventionally described as rotations, {beta} vibrations, and {gamma} vibrations. Recently, it has been suggested that {sup 152}Sm is at a critical point between spherical and deformed collective phases. Consequently, {sup 152}Sm is being studied by a variety of techniques, including radioactive decay, multi-step Coulomb excitation, in-beam ({alpha},2n{gamma}) {gamma}-ray spectroscopy, and (n,n'{gamma}) spectroscopy. The present work focuses on the latter two reactions; these have been used to investigate the low-lying bands associated with the octupole degree of freedom, including one built on the first excited 0{sup +} band. In addition, the K{sup {pi}} = 4{sup +} hexadecapole vibrational band has been identified.
Date: May 13, 2005
Creator: Garrett, P. E.; Kulp, W. D.; Wood, J. L.; Bandyopadhyay, D.; Christen, S.; Choudry, S. et al.
Object Type: Article
System: The UNT Digital Library
PET Imaging of Adoptive Progenitor Cell Therapies (open access)

PET Imaging of Adoptive Progenitor Cell Therapies

Objectives. The overall objective of this application is to develop novel technologies for non-invasive imaging of adoptive stem cell-based therapies with positron emission tomography (PET) that would be applicable to human patients. To achieve this objective, stem cells will be genetically labeled with a PET-reporter gene and repetitively imaged to assess their distribution, migration, differentiation, and persistence using a radiolabeled reporter probe. This new imaging technology will be tested in adoptive progenitor cell-based therapy models in animals, including: delivery pro-apoptotic genes to tumors, and T-cell reconstitution for immunostimulatory therapy during allogeneic bone marrow progenitor cell transplantation. Technical and Scientific Merits. Non-invasive whole body imaging would significantly aid in the development and clinical implementation of various adoptive progenitor cell-based therapies by providing the means for non-invasive monitoring of the fate of injected progenitor cells over a long period of observation. The proposed imaging approaches could help to address several questions related to stem cell migration and homing, their long-term viability, and their subsequent differentiation. The ability to image these processes non-invasively in 3D and repetitively over a long period of time is very important and will help the development and clinical application of various strategies to control and direct stem cell …
Date: May 13, 2008
Creator: Gelovani, Juri G.
Object Type: Report
System: The UNT Digital Library
Tank monitor and control system (TMACS) software configuration management plan (open access)

Tank monitor and control system (TMACS) software configuration management plan

This Software Configuration Management Plan (SCMP) describes the methodology for control of computer software developed and supported by the Systems Development and Integration (SD and I) organization of Lockheed Martin Services, Inc. (LMSI) for the Tank Monitor and Control System (TMACS). This plan controls changes to the software and configuration files used by TMACS. The controlled software includes the Gensym software package, Gensym knowledge base files developed for TMACS, C-language programs used by TMACS, the operating system on the production machine, language compilers, and all Windows NT commands and functions which affect the operating environment. The configuration files controlled include the files downloaded to the Acromag and Westronic field instruments.
Date: May 13, 1999
Creator: Glasscock, J. A.
Object Type: Report
System: The UNT Digital Library
Use of mixing slugs for tube corrosion considerations (open access)

Use of mixing slugs for tube corrosion considerations

None
Date: May 13, 1959
Creator: Graves, S. M.
Object Type: Report
System: The UNT Digital Library
Progress on the MICE Liquid Absorber Cooling and Cryogenic Distribution System (open access)

Progress on the MICE Liquid Absorber Cooling and Cryogenic Distribution System

This report describes the progress made on the design of the cryogenic cooling system for the liquid absorber for the international Muon Ionization Cooling Experiment (MICE). The absorber consists of a 20.7-liter vessel that contains liquid hydrogen (1.48 kg at 20.3 K) or liquid helium (2.59 kg at 4.2 K). The liquid cryogen vessel is located within the warm bore of the focusing magnet for the MICE. The purpose of the magnet is to provide a low beam beta region within the absorber. For safety reasons, the vacuum vessel for the hydrogen absorber is separated from the vacuum vessel for the superconducting magnet and the vacuum that surrounds the RF cavities or the detector. The absorber thin windows separate the liquid in the absorber from the absorber vacuum. The absorber vacuum vessel also has thin windows that separate the absorber vacuum space from adjacent vacuum spaces. Because the muon beam in MICE is of low intensity, there is no beam heating in the absorber. The absorber can use a single 4 K cooler to cool either liquid helium or liquid hydrogen within the absorber.
Date: May 13, 2005
Creator: Green, M.A.; Baynham, E.; Bradshaw, T.; Drumm, P.; Ivanyushenkov,Y.; Ishimoto, S. et al.
Object Type: Article
System: The UNT Digital Library
Proof-of-concept experiments for negative ion driver beams forheavy ion fusion (open access)

Proof-of-concept experiments for negative ion driver beams forheavy ion fusion

Negative halogen ion beams have recently been proposed as heavy ion fusion drivers. They would avoid the problem of electron accumulation in positive ion beams, and could be efficiently photodetached to neutrals if desired [1]. Initial experiments using chlorine produced a current density of 45 mA/cm{sup 2} of 99.5% atomic negative Cl with an e/Cl{sup -} ratio as low as 7:1 and good emittance.
Date: May 13, 2003
Creator: Grisham, L. R.; Hahto, S. K.; Hahto, S. T.; Kwan, J. W. & Leung, K. N.
Object Type: Article
System: The UNT Digital Library
Gaseous pyrolysis products identified by combined thermal and mass spectrometric analyses (open access)

Gaseous pyrolysis products identified by combined thermal and mass spectrometric analyses

None
Date: May 13, 1975
Creator: Grossaint, K. J.
Object Type: Report
System: The UNT Digital Library
PT-105-600-A: First measurement of graphite temperature reactivity coefficient at KE (compilation of data) (open access)

PT-105-600-A: First measurement of graphite temperature reactivity coefficient at KE (compilation of data)

This test consisted of a series of helium purges of the pile gas atmosphere to bring the helium content up to about 70 to 80% helium followed by a series of CO{sub 2} purges to restore the pile atmosphere to its initial composition. The purges where spaced roughly four hours apart to enable the reactor to reach a steady temperature before purge was undertaken. The test results are presented in this report.
Date: May 13, 1955
Creator: Gumprecht, R. O.
Object Type: Report
System: The UNT Digital Library
Tank characterization report for single-shell tank 241-SX-115 (open access)

Tank characterization report for single-shell tank 241-SX-115

A major function of the Tank Waste Remediation System (TWRS) is to characterize waste in support of waste management and disposal activities at the Hanford Site. Analytical data from sampling and analysis and other available information about a tank are compiled and maintained in a tank characterization report (TCR). This report and its appendices serve as the TCR for single-shell tank 241-SX-115. The objectives of this report are (1) to use characterization data in response to technical issues associated with tank 241-SX-115 waste, and (2) to provide a standard characterization of this waste in terms of a best-basis inventory estimate. Section 2.0 summarizes the response to technical issues, Section 3.0 shows the best-basis inventory estimate, Section 4.0 makes recommendations about the safety status of the tank and additional sampling needs. The appendices contain supporting data and information. This report supports the requirements of the Hanford Federal Facility Agreement and Consent Order (Ecology et al. 1997), Milestone M-44-15c, change request M-44-97-03 to ''issue characterization deliverables consistent with the Waste Information Requirements Document developed for FY 1999'' (Adams et al. 1998).
Date: May 13, 1999
Creator: HULSE, N.L.
Object Type: Report
System: The UNT Digital Library
Charged-hadron production in e/sup +/e/sup -/ collisions at PEP with the TPC (open access)

Charged-hadron production in e/sup +/e/sup -/ collisions at PEP with the TPC

We have studied hadron production in e/sup +/e/sup -/ annihilation at 29 GeV center of mass energy. We have measured the particle fractions and particle separated differential cross sections using the PEP-4 (Time Projection Chamber) detector. The particles were identified by measuring their ionization energy loss (dE/dx). The pion fraction decreases from above 90% at 400 MeV/c to 55% at 6 GeV/c. Our results for kaon production require that a large number of kaons are produced by strange quarks pulled from the vacuum. We have also measured R, the ratio of the total hadronic cross section to the mu pair cross section. Our value for R is 3.7 with an uncertainty of 10%. This value is in agreement with the results of other experiments and with the predictions of the quark-parton model.
Date: May 13, 1983
Creator: Hadley, N.J.
Object Type: Report
System: The UNT Digital Library
Summary of K Reactor outlet temperature limits (open access)

Summary of K Reactor outlet temperature limits

The purpose of this report is to summarize all actual and potential power level limits under which the K Reactors may be forced to operate during the next year. In addition, a summary of the methods being followed to eliminate each is to be discussed along with a graphical presentation of the relationship of the various limits. For the purpose of this report, it was assumed that all power levels will be attainable from a physics aspect since these problems are discussed elsewhere. It is not the intent of this report to recommend that these power levels be attained but only to indicate what production levels are possible through operation on any one limit. Seven outlet temperature limits govern operation at the K Reactors. They are: TBI Limit; Crosstie Limit; Rear Header Saturation Limit; Bulk Outlet Temperature Limit; Tube Corrosion Limit; Temperature Monitor Limit; and Rupture Control Point. Operation during the summer months of 1957 will require cuts in power in order to remain within these limits unless modes of circumventing a few are found. The limits are shown graphically in the appendix at the various flow rates probable. From these curves it is evident that the Low Trip TBI …
Date: May 13, 1957
Creator: Hall, R. E.
Object Type: Report
System: The UNT Digital Library
Optimization of Ultrasonic Fabric Cleaning (open access)

Optimization of Ultrasonic Fabric Cleaning

The fundamental purpose of this project was to research and develop a process that would reduce the cost and improve the environmental efficiency of the present dry-cleaning industry. This second phase of research (see report KCP-94-1006 for information gathered during the first phase) was intended to allow the optimal integration of all factors of ultrasonic fabric cleaning. For this phase, Garment Care performed an extensive literature search and gathered data from other researchers worldwide. The Garment Care-AlliedSignal team developed the requirements for a prototype cleaning tank for studies and acquired that tank and the additional equipment required to use it properly. Garment Care and AlliedSignal acquired the transducers and generators from Surftran Martin-Walter in Sterling Heights, Michigan. Amway's Kelly Haley developed the test protocol, supplied hundreds of test swatches, gathered the data on the swatches before and after the tests, assisted with the cleaning tests, and prepared the final analysis of the results. AlliedSignal personnel, in conjunction with Amway and Garment Care staff, performed all the tests. Additional planning is under way for future testing by outside research facilities. The final results indicated repeatable performance and good results for single layered fabric swatches. Swatches that were cleaned as a ''sandwich,'' …
Date: May 13, 1998
Creator: Hand, T.E.
Object Type: Report
System: The UNT Digital Library
Irradiation Processing Department Monthly Report: April 1963 (open access)

Irradiation Processing Department Monthly Report: April 1963

This document details activities of the Irradiation Processing Department during the month of August, 1958. A general summary is included at the start of the report, after which the report is divided into the following sections: Research and Engineering Operations; Production and Reactor Operations; Facilities Engineering Operation; Employee Relations Operation; and Financial Operation.
Date: May 13, 1963
Creator: Hanford Atomic Products Operation. Irradiation Processing Department.
Object Type: Report
System: The UNT Digital Library
Method for Measuring Internal Conversion Coefficients Using a Bent-Crystal Gamma-Ray Monochromator and a Magnetic Electron Spectrometer (open access)

Method for Measuring Internal Conversion Coefficients Using a Bent-Crystal Gamma-Ray Monochromator and a Magnetic Electron Spectrometer

None
Date: May 13, 1965
Creator: Hatch, E. N.; Eakins, G. W.; Nelson, G. C. & McAdams, R. E.
Object Type: Report
System: The UNT Digital Library
ARDEC transition armature study. Progress report No. 3, October 1--November 30, 1991 (open access)

ARDEC transition armature study. Progress report No. 3, October 1--November 30, 1991

This third report covers the period October 1 to November 30, 1991. During this period the authors: (1) fabricated a test fixture for studying hybrid armature brush behavior, (2) reactivated a 140kJ, 1MA capacitor bank, (3) reactivated 25 channels digital data acquisition and reduction system and (4) concluded the use of a DNA funded railgun would serve as the most expedient means to acquire a railgun test bed. Fabrication of a plasma brush test fixture for studying the formation, evolution and stability of plasma brushes was completed. The fixture will serve to study plasma brush parameters, such as brush length and voltage drop, as a function of initial solid foil mass, gap size and current concentration. A 4OkV, 168{mu}f, 140kJ capacitor bank capable of providing more than 1MA of current was reactivated. (The LLNL bank had been developed for opening switch research which was successfully completed.) The bank will be used to power the test fixture with 10{mu}s, flat top current pulses. A 25 channel LeCroy digital data acquisition system interfaced to an LSI-11 and a Mini VAX computer was reactivated and brought on line to record the B-dot signals, voltages and current data from the test fixture. An evaluation …
Date: May 13, 1992
Creator: Hawke, R. S.
Object Type: Report
System: The UNT Digital Library
Design data and safety features of commercial nuclear power plants including cumulative index for Volumes I--VI (open access)

Design data and safety features of commercial nuclear power plants including cumulative index for Volumes I--VI

Design data, safety features, and site characteristics are summarized for 12 nuclear power units in 6 power stations in the United States. Six pages of data are presented for each station, consisting of thermal-hydraulic and nuclear factors, containment features, emergency-core-cooling systems, site features, circulating water system data, and miscellaneous factors. In addition, an aerial perspective is presented for each plant. This volume covers plants with docket numbers 50-553 through 50-569 (Phipps Bend, Black Fox, Yellow Creek, and NEP) and two earlier plants not previously reported--Hope Creek (50-354, 50-355) and WPPSS 1 and 4 (50-460, 50-513). Indexes for this volume and the five earlier volumes are presented in three forms--by docket number, by plant name, and by participating utility.
Date: May 13, 1977
Creator: Heddleson, F. A.
Object Type: Report
System: The UNT Digital Library
Predicting flammable gas mixtures in Hanford double-contained receiver tanks (open access)

Predicting flammable gas mixtures in Hanford double-contained receiver tanks

This study presents a methodology to estimate the maximum concentrations of flammable gases (ammonia, hydrogen, and methane) which could exist in the vapor space of a double-contained receiver tank (DCRT). DCRTs are temporary storage tanks which receive highly radioactive liquid wastes from salt well pumping of Hanford single-shell tanks (SST). The methodology of this study could be used in other applications involving the storage and transfer of radioactive liquid wastes which generate or contain various dissolved flammable gases.
Date: May 13, 1998
Creator: Hedengren, D.C.
Object Type: Article
System: The UNT Digital Library
Final report for Utah State's SciDAC CEMM contribution (open access)

Final report for Utah State's SciDAC CEMM contribution

This document represents a summary of work carried out at Utah State University in conjunction with the Center for Extended Magnetohyrodynamic Modeling (CEMM). The principal investigator, Dr. Eric Held, was aided in this work by two former graduate students, Drs. John James and Michael Addae-Kagyah, who completed their PhD's while being partially funded by CEMM monies. In addtion, Dr. Jeong-Young Ji, a postdoctoral researcher and Mukta Sharma, a graduate student were supported. The work associated with this grant focused on developing an efficient, hybrid fluid/kinetic model for fusion plasmas. Specifically, expressions for the parallel heat fluxes and stresses in magnetized plasmas were implemented and exercised in the NIMROD plasma fluid code.
Date: May 13, 2008
Creator: Held, Dr. Eric
Object Type: Report
System: The UNT Digital Library
Testing of the SpinTek Rotary Microfilter Using Actual Waste (open access)

Testing of the SpinTek Rotary Microfilter Using Actual Waste

The Department of Energy selected caustic-side solvent extraction (CSSX) as the preferred cesium-removal technology for SRS high-level waste. In the pretreatment step of the CSSX flowsheet, the incoming salt solution, which contains entrained sludge, is contacted with MST to adsorb strontium and selected actinides. An alternative approach replaces MST with the addition of sodium permanganate, strontium nitrate, and hydrogen peroxide. The pretreatment operation then filters the resulting slurry to remove the sludge and MST or manganese oxide and strontium carbonate solids. The filtrate receives further treatment in the solvent extraction system
Date: May 13, 2003
Creator: Herman, D.T.
Object Type: Report
System: The UNT Digital Library
Streaked radiography measurements of convergent ablator performance (open access)

Streaked radiography measurements of convergent ablator performance

None
Date: May 13, 2010
Creator: Hicks, D G; Spears, B K; Braun, D G; Olson, R E; Sorce, C M; Celliers, P M et al.
Object Type: Article
System: The UNT Digital Library
Negative ion yields from protons and hydrogen atoms backscattered from cesium-coated surfaces (open access)

Negative ion yields from protons and hydrogen atoms backscattered from cesium-coated surfaces

The formation of negative ions by hydrogen collisions on cesium-coated surfaces is discussed in the limiting cases where the resident cesium is either in the purely ionic state or in the purely atomic state. The survival fraction for negative ions moving away from a metal surface is calculated using a method employing complex eigenvalues. The fraction of surviving ions is found to be larger than calculated by previous workers. The secondary emission coefficient for negative ion production by incident atoms with energies of ten to one hundred electron volts is estimated to be in the range thirty to forty percent.
Date: May 13, 1977
Creator: Hiskes, J. R. & Karo, A.
Object Type: Report
System: The UNT Digital Library