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877
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849
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Results:
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A 1.8 Mev K+ injector for the high current beam transport experiment fusion
For the High Current Beam Transport Experiment (HCX) at LBNL, an injector is required to deliver up to 1.8 MV of 0.6 A K{sup +} beam with an emittance of {approx}1 p-mm-mrad. We have successfully operated a 10-cm diameter surface ionization source together with an electrostatic quadrupole (ESQ) accelerator to meet these requirements. The pulse length is {approx}4 {micro}s, firing at once every 10-15 seconds. By optimizing the extraction diode and the ESQ voltages, we have obtained an output beam with good current density uniformity, except for a small increase near the beam edge. Characterization of the beam emerging from the injector included measurements of the intensity profile, beam imaging, and transverse phase space. These data along with comparison to computer simulations provide the knowledge base for designing and understanding future HCX experiments.
Date:
May 20, 2002
Creator:
Kwan, J. W.; Bieniosek, F. M.; Henestroza, E.; Prost, L. & Seidl, P.
Object Type:
Article
System:
The UNT Digital Library
A 2-D Pore-Network Model of the Drying of Single-Component Liquids in Porous Media
The drying of liquid-saturated porous media is typically approaching using macroscopic continuum models involving phenomenological coefficients. Insight on these coefficients can be obtained by a more fundamental study at the pore- and pore-network levels. In this report, a model based on pore-network representation of porous media that accounts for various process at the pore-scale is presented. These include mass transfer by advection and diffusion in the gas phase, viscous flow in liquid and gas phases and capillary effects at the gas-liquid menisci in the pore throats.
Date:
January 20, 2000
Creator:
Yortsos, Yanic C.; Yiotis, A. G.; Stubos, A. K. & Boundovis, A. G.
Object Type:
Report
System:
The UNT Digital Library
3-D Finite Element Analysis of Induction Logging in a Dipping Formation
Electromagnetic induction by a magnetic dipole located above a dipping interface is of relevance to the petroleum well-logging industry. The problem is fully three-dimensional (3-D) when formulated as above, but reduces to an analytically tractable one-dimensional (1-D) problem when cast as a small tilted coil above a horizontal interface. The two problems are related by a simple coordinate rotation. An examination of the induced eddy currents and the electric charge accumulation at the interface help to explain the inductive and polarization effects commonly observed in induction logs from dipping geological formations. The equivalence between the 1-D and 3-D formulations of the problem enables the validation of a previously published finite element solver for 3-D controlled-source electromagnetic induction.
Date:
July 20, 2000
Creator:
Everett, Mark E.; Badea, Eugene A,; Shen, Liang, C.; Merchant, Gulamabbas A. & Weiss, Chester J.
Object Type:
Article
System:
The UNT Digital Library
3-D Micro-Scale Machining Implementation
The KCP investigated milling, turning, and wire EDMing features at a micro-scale using existing equipment to find the limitations and hindrances to producing future designs.
Date:
October 20, 2008
Creator:
Boucher, Christopher L.
Object Type:
Report
System:
The UNT Digital Library
3 V manganese oxide electrode materials for lithium batteries.
None
Date:
June 20, 2000
Creator:
Johnson, C. S. & Thackeray, M. M.
Object Type:
Article
System:
The UNT Digital Library
9/11 Commission Recommendations: Joint Committee on Atomic Energy - A Model for Congressional Oversight?
This report focuses on that portion of the 9/11 Commission recommendation that urges Congress to consider the model of the Joint Committee on Atomic Energy (JCAE). It provides an outline of the history, structure, and powers of the JCAE and analyzes a number of issues that might be considered by policymakers as they weigh the suitability of the JCAE as a possible model when crafting congressional oversight mechanisms for intelligence.
Date:
August 20, 2004
Creator:
Davis, Christopher M.
Object Type:
Report
System:
The UNT Digital Library
100 Area and 300 Area Component of the River Corridor Baseline Risk Assessment Spring 2006 Data Compilation
The purpose of this report is to describe the sampling approaches, modifications made to the 100 Area and 300 Area component of the RCBRA Sampling and Analysis Plan, summarize validation efforts, and provide sample identification numbers.
Date:
November 20, 2006
Creator:
Queen, J. M. & Weiss, S. G.
Object Type:
Report
System:
The UNT Digital Library
147 Form Letters Niagara Falls
Community Correspondence - Form Letters from concerned citizens regarding Niagara Falls Air Force Reserve and Guard Base
Date:
August 20, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
300 Area D4 Project 1st Quarter Fiscal Year 2006 Building Completion Report
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.
Object Type:
Report
System:
The UNT Digital Library
The 300 Kpc Long X-Ray Jet in PKS 1127-145, Z=1.18 Quasar: Constraining X-Ray Emission Models
We present a {approx} 100 ksec Chandra X-ray observation and new VLA radio data of the large scale, 300 kpc long X-ray jet in PKS 1127-145, a radio loud quasar at redshift z=1.18. With this deep X-ray observation we now clearly discern the complex X-ray jet morphology and see substructure within the knots. The X-ray and radio jet intensity profiles are seen to be strikingly different with the radio emission peaking strongly at the two outer knots while the X-ray emission is strongest in the inner jet region. The jet X-ray surface brightness gradually decreases by an order of magnitude going out from the core. The new X-ray data contain sufficient counts to do spectral analysis of the key jet features. The X-ray energy index of the inner jet is relatively flat with {alpha}{sub x} = 0.66 {+-} 0.15 and steep in the outer jet with {alpha}{sub x} = 1.0 {+-} 0.2. We discuss the constraints implied by the new data on the X-ray emission models and conclude that ''one-zone'' models fail and at least a two component model is needed to explain the jet's broad-band emission. We propose that the X-ray emission originates in the jet proper while the …
Date:
November 20, 2006
Creator:
Siemiginowska, Aneta; Stawarz, Lukasz; Cheung, C. C.; Harris, D. E.; Sikora, Marek; Aldcroft, Thomas L. et al.
Object Type:
Article
System:
The UNT Digital Library
317/319 phytoremediation site monitoring report - 2003 growing season.
In 1999, Argonne National Laboratory-East (ANL-E) designed and installed a series of engineered plantings consisting of a vegetative cover system and approximately 800 hybrid poplars and willows rooting at various predetermined depths. The plants were installed using various methods including Applied Natural Science's TreeWell{reg_sign} system. The goal of the installation was to protect downgradient surface and groundwater by hydraulic control of the contaminated plume by intercepting the contaminated groundwater with the tree roots, removing moisture from the upgradient soil area, reducing water infiltration, preventing soil erosion, degrading and/or transpiring the residual volatile organic compounds (VOCs), and removing tritium from the subsoil and groundwater. This report presents the results of the monitoring activities conducted by Argonne's Energy Systems Division (ES) in the growing season of 2003. ES was tasked with the biomonitoring of the plantation to determine contaminant uptake and groundwater contact. VOCs were found in plant tissue both at the French Drain and the Hydraulic Control locations in varying concentrations, and tritium levels in transpirate was found to continue a trend of higher concentrations compared to the background in the ANL-E area.
Date:
February 20, 2004
Creator:
Negri, M. C.; Gopalakrishnan, G.; Hamilton, C. & Systems, Energy
Object Type:
Report
System:
The UNT Digital Library
524 Form Letters Niagara Falls Air Force Reserve and Guard Base
Community Correspondence - 524 Form Letters from concerned citizens regarding Niagara Falls Air Force Reserve and Guard Base
Date:
August 20, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
525 Form Letters Niagara Falls
Community Correspondence - Form Letters from concerned citizens regarding Niagara Falls Air Force Reserve and Guard Base
Date:
August 20, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
527 Political Organizations: Legislation in the 109th Congress
The 109th Congress is examining the role of groups organized under section of the Internal Revenue Code(IRC) that are involved in federal elections, but are not operating under the requirements and restrictions of federal election law.
Date:
June 20, 2005
Creator:
Cantor, Joseph E.
Object Type:
Report
System:
The UNT Digital Library
556 Form Letters Niagara Falls
Community Correspondence - Form Letters from concerned citizens regarding Niagara Falls Air Force Reserve and Guard Base
Date:
August 20, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
563 Form Letters Niagara Falls Air Force
Community Correspondence - Form Letters from concerned citizens regarding Niagara Falls Air Force Reserve and Guard Base
Date:
August 20, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
567 Form Letters Niagara Falls
Community Correspondence - Form Letters from concerned citizens regarding Niagara Falls Air Force Reserve and Guard Base
Date:
August 20, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
578 Form Letters Niagara Falls
Community Correspondence - Form Letters from concerned citizens regarding Niagara Falls Air Force Reserve and Guard Base
Date:
August 20, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
579 Form Letters Niagara Falls
Community Correspondence - Form Letters from concerned citizens regarding Niagara Falls Air Force Reserve and Guard Base
Date:
August 20, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
584 Form Letters Niagara Falls
Community Correspondence - Form Letters from concerned citizens regarding Niagara Falls Air Force Reserve and Guard Base
Date:
August 20, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
584 Form Letters Niagara Falls
Community Correspondence - Form Letters from concerned citizens regarding Niagara Falls Air Force Reserve and Guard Base
Date:
August 20, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
604 Form Letters Niagara Falls
Community Correspondence - Form Letters from concerned citizens regarding Niagara Falls Air Force Reserve and Guard Base
Date:
August 20, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
644 Form Letters Niagara Falls
Community Correspondence - Form Letters from concerned citizens regarding Niagara Falls Air Force Reserve and Guard Base
Date:
August 20, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
675 Form Letters Niagara Falls
Community Correspondence - Form Letters from concerned citizens regarding Niagara Falls Air Force Reserve and Guard Base
Date:
August 20, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library