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2-D electric fields and drifts near the magnetic separatrix in divertor tokamaks

Description: A 2-D calculation is presented for the transport of plasma in the edge region of a divertor tokamak solving continuity, momentum, and energy balance fluid equations. The model uses anomalous radial diffusion, including perpendicular ion momentum, and classical cross-field drifts transport. Parallel and perpendicular currents yield a self-consistent electrostatic potential on both sides of the magnetic separatrix. Outside the separatrix, the simulation extends to material divertor plates where t… more
Date: November 15, 1998
Creator: Mattor, N.; Porter, G. D.; Rognlien, T. D. & Ryutov, D. D.
Partner: UNT Libraries Government Documents Department
open access

A 3.3 MJ, Rb{sup +1} Driver Design Based on an Integrated Systems Analysis

Description: A computer model for systems analysis of heavy ion drivers has been developed and used to evaluate driver designs for inertial fusion energy (IFE). The present work examines a driver for a close-coupled target design that requires less total beam energy but also smaller beam spots sizes than previous target designs. Design parameters and a cost estimate for a 160 beam, 3.3 MJ driver using rubidium ions (A = 85) are reported, and the sensitivity of the results to variations in selected design pa… more
Date: September 15, 2000
Creator: Meier, W. R.; Barnard, J. J. & Bangerter, R. O.
Partner: UNT Libraries Government Documents Department
open access

N >= 4 Supergravity Amplitudes from Gauge Theory at Two Loops

Description: We present the full two-loop four-graviton amplitudes in N = 4, 5, 6 supergravity. These results were obtained using the double-copy structure of gravity, which follows from the recently conjectured color-kinematics duality in gauge theory. The two-loop four-gluon scattering amplitudes in N = 0, 1, 2 supersymmetric gauge theory are a second essential ingredient. The gravity amplitudes have the expected infrared behavior: the two-loop divergences are given in terms of the squares of the correspo… more
Date: February 15, 2012
Creator: Boucher-Veronneau, C. & Dixon, L. J.
Partner: UNT Libraries Government Documents Department
open access

14 mrad Extraction Line Optics for Push-Pull

Description: The ILC design is based on a single Interaction Region (IR) with 14 mrad crossing angle and two detectors in the 'push-pull' configuration, where the detectors can alternately occupy the Interaction Point (IP). Consequently, the IR optics must be compatible with different size detectors designed for different distance L* between the IP and the nearest quadrupole. This paper presents the push-pull optics for the ILC extraction line compatible with L*= 3.5 m to 4.5 m, and the simulation results o… more
Date: October 15, 2007
Creator: Nosochkov, Y.; Moffeit, K.; Seryi, A.; Morse, W. & Parker, B.
Partner: UNT Libraries Government Documents Department
open access

15-foot bubble chamber characteristics

Description: Specifications, operation, characteristics, cost, and experience with the NAL 15-ft bubble chamber are described. Beam availability and some experimental proposals are discussed. (WHK)
Date: September 15, 1975
Creator: Huson, F. R.
Partner: UNT Libraries Government Documents Department
open access

[12th International workshop on Inelastic Ion-Surface Collisions]

Description: The twelfth international workshop on inelastic ion surface collisions was held at the Bahia Mar Resort and Conference Center on South Padre Island, Texas (USA) from January 24-29, 1999. The workshop brought together most of the leading researchers from around the world to focus on both the theoretical and experimental aspects of particle - surface interactions and related topics.
Date: October 15, 1999
Creator: Rabalais, J. W. & Nordlander, P.
Partner: UNT Libraries Government Documents Department
open access

2004 Molecular Basis of Microbial One-Carbon Metabolism Gordon Conference - August 1-6, 2004

Description: The Gordon Research Conference (GRC) on 2004 Molecular Basis of Microbial One-Carbon Metabolism Gordon Conference - August 1-6, 2004 was held at Mount Holyoke College, South Hadley, MA from August 1-6, 2004. The Conference was well-attended with 117 participants (attendees list attached). The attendees represented the spectrum of endeavor in this field coming from academia, industry, and government laboratories, both U.S. and foreign scientists, senior researchers, young investigators, and stud… more
Date: September 15, 2005
Creator: Krzycki, Joseph A.
Partner: UNT Libraries Government Documents Department
open access

2007 Plant Metabolic Engineering Gordon Conference and Graduate Research Seminar

Description: Plant Metabolic Engineering is an emerging field that integrates a diverse range of disciplines including plant genetics, genomics, biochemistry, chemistry and cell biology. The Gordon-Kenan Graduate Research Seminar (GRS) in Plant Metabolic Engineering was initiated to provide a unique opportunity for future researcher leaders to present their work in this field. It also creates an environment allowing for peer-review and critical assessment of work without the intimidation usually associated … more
Date: September 15, 2008
Creator: Grotewold, Erich
Partner: UNT Libraries Government Documents Department
open access

2011 Organometallic Chemistry (July 10-15, 2011, Salve Regina University, Newport, RI)

Description: Organometallic chemistry has played and will continue to play a significant role in helping us understand the way bonds are made or broken in the presence of a transition metal complex. Current challenges range from the efficient exploitation of energy resources to the creative use of natural and artificial enzymes. Most of the new advances in the area are due to our extended understanding of processes at a molecular level due to new mechanistic studies, techniques to detect reaction intermedia… more
Date: July 15, 2011
Creator: Bunel, Dr. Emilio
Partner: UNT Libraries Government Documents Department
open access

2011 Photochemistry Gordon Research Conference (July10-15, 2011, Stonehill College, Easton, MA)

Description: Photochemistry has wide implications on fundamental science with technological applications that range from synthetic and mechanistic organic and inorganic chemistry to sensing/manipulation in the biological sciences to viable solar energy conversion assemblies. The 2011 Gordon Research Conference on Photochemistry will highlight recent advances on photochemical reactions, their mechanisms, spectroscopic techniques and applications to materials, organic synthesis, and biology. The conference wi… more
Date: July 15, 2011
Creator: Meyer, Prof. Gerald
Partner: UNT Libraries Government Documents Department
open access

2012 PLASMONICS GORDON RESEARCH CONFERENCE AND GORDON RESEARCH SEMINAR, JUNE 10-15, 2012

Description: The focus of this meeting is on recent advances in science and engineering of plasmonic optics and its applications in the design of novel devices and components. The impacts of plasmonic phenomena on other disciplines such as chemistry, biology, medicine and engineering will also be discussed.
Date: June 15, 2012
Creator: Engheta, Nader
Partner: UNT Libraries Government Documents Department
open access

3D Atom Probe Tomography Study on Segregation of Yttrium in Modified Aluminum-Silicon Alloys

Description: In this article, yttrium segregation behavior in Al-Si alloys has been studied using the three-dimensional atom probe tomography technique. Al-Si alloys were prepared by casting method, and yttrium was added to modify the eutectic silicon morphology in these alloys. The results indicated that yttrium is preferentially located within the Si phase, with the highest concentration at the interface between eutectic Al and eutectic Si.
Date: May 15, 2018
Creator: De-Giovanni, Mario; Alam, Talukder; Banerjee, Rajarshi & Srirangam, Prakash
Partner: UNT College of Engineering
open access

3D highly oriented nanoparticulate and microparticulate array ofmetal oxide materials

Description: Advanced nano and micro particulate thin films of 3d transition and post-transition metal oxides consisting of nanorods and microrods with parallel and perpendicular orientation with respect to the substrate normal, have been successfully grown onto various substrates by heteronucleation, without template and/or surfactant, from the aqueous condensation of solution of metal salts or metal complexes (aqueous chemical growth). Three-dimensional arrays of iron oxide nanorods and zinc oxide nanorod… more
Date: September 15, 2006
Creator: Vayssieres, Lionel; Guo, Jinghua & Nordgren, Joseph
Partner: UNT Libraries Government Documents Department
open access

7Be(p,(gamma))8B S-factor From Ab Initio Wave Functions

Description: Nuclear structure of {sup 7}Be, {sup 8}B and {sup 7,8}Li is studied within the ab initio no-core shell model (NCSM). Starting from the high-precision CD-Bonn 2000 nucleon-nucleon (NN) interaction, wave functions of {sup 7}Be and {sup 8}B bound states are obtained in basis spaces up to 10{h_bar}{Omega} and used to calculate channel cluster form factors (overlap integrals) of the {sup 8}B ground state with {sup 7}Be+p. Due to the use of the harmonic oscillator (HO) basis, the overlap integrals ha… more
Date: August 15, 2005
Creator: Navratil, P; Bertulani, C & Caurier, E
Partner: UNT Libraries Government Documents Department
open access

Absolute X-Ray Yields From Laser-Irradiated, Ge-Doped Aerogel Targets

Description: Bright, multi-keV x-ray sources are essential for radiography of inertial-confinement fusion (ICF) experiments. In this context, there are two parameters of importance: the energy of the emitted photons, which determines how penetrating the x-rays are for radiographic purposes, and the brightness of the source, which determines the ability of a radiograph to resolve small features. As ICF experiments continue to get larger, such as those that will be carried out at the National Ignition Facilit… more
Date: June 15, 2005
Creator: Fournier, K. B.; Tobin, M.; Poco, J. F.; Bradley, K.; Coverdale, C. A.; Beutler, D. et al.
Partner: UNT Libraries Government Documents Department
open access

Absorption spectrophotometric characterization of Sm(II), Sm(III), and Sm(II/III) bromides and Sm(III) oxybromide in the solid state

Description: Absorption spectra obtained from SmBr/sub 3/, SmBr/sub 2/, and Sm0Br were used in identifying the samarium species in several mixed-valence Sm(II/III) compounds produced by H/sub 2/ reduction of SmBr/sub 3/. The nature of the absorption of Sm0Br made it possible to detect even traces of Sm0Br in the Sm bromides.
Date: June 15, 1981
Creator: Wood, A. B.; Young, J. P.; Peterson, J. R. & Haschke, J. M.
Partner: UNT Libraries Government Documents Department
open access

ABSTRACT: Design of Groundwater Monitoring Networks Considering Conceptual Model and Parametric Uncertainty

Description: Uncertainty built into conceptual groundwater flow and transport models and associated parametric uncertainty should be appropriately included when such models are used to develop detection monitoring networks for contaminated sites. We compare alternative approaches of propagating such uncertainty from the flow and transport model into the network design. The focus is on detection monitoring networks where the primary objective is to intercept the contaminant before it reaches a boundary of in… more
Date: September 15, 2008
Creator: Hassan, A.; Bekhit, H.; Zhang, Y. & Chapman, J.
Partner: UNT Libraries Government Documents Department
open access

ABSTRACT: Upscaling Fracture Properties in Support of Dual-permeability Simulations

Description: Rainier Mesa (RM) is a tuffaceous, high-elevation plateau on the Nevada Test Site (NTS) that has been subjected to numerous nuclear tests between 1957 and 1992. Unlike other tests on the NTS located within or just above the saturated zone, tests at the RM T-tunnel complex were conducted within a variably saturated sequence of bedded and non-welded vitric and zeolitized tuff units, located approximately 500 m above the regional groundwater flow system. The low permeability and high porosity of t… more
Date: September 15, 2008
Creator: Parashar, Rishi & Reeves, Donald M.
Partner: UNT Libraries Government Documents Department
open access

AC Loss Measurements with a Cryocooled Sample

Description: A new cryostat cooled by a closed-cycle Cryomech GB-37 cryocooler for superconductor measurements at temperatures down to 20 K is described. The sample is conductively coupled to the cold stage so as to minimize vibration and thermal stresses. AC losses have been measured calorimetrically in several HTSC coils that have been wound to simulate sub-scale transformer winding pairs. Stable temperatures down to 20 K were reached on these coils, allowing measurements at practical levels of ac current… more
Date: February 15, 2001
Creator: Schwenterly, S.W.
Partner: UNT Libraries Government Documents Department
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