Fast six-channel pyrometer for warm-dense-matter experiments with intense heavy-ion beams (open access)

Fast six-channel pyrometer for warm-dense-matter experiments with intense heavy-ion beams

This paper describes a fast multi-channel radiation pyrometer that was developed for warmdense-matter experiments with intense heavy ion beams at Gesellschaft fur Schwerionenforschung mbH (GSI). The pyrometer is capable of measuring of brightness temperatures from 2000 K to 50000 K, at 6 wavelengths in visible and near-infrared parts of spectrum, with 5 nanosecond temporal resolution and several micrometers spatial resolution. The pyrometer's spectral discrimination technique is based on interference filters, which act as filters and mirrors to allow for simultaneous spectral discrimination of the same ray at multiple wavelengths.
Date: December 1, 2008
Creator: Ni, P.A.; Kulish, M.I.; Mintsev, V.; Nikolaev, D.N.; Ternovoi, V.Ya.; Hoffmann, D.H.H. et al.
Object Type: Article
System: The UNT Digital Library
Advanced Mud System for Microhole Coiled Tubing Drilling (open access)

Advanced Mud System for Microhole Coiled Tubing Drilling

An advanced mud system was designed and key components were built that augment a coiled tubing drilling (CTD) rig that is designed specifically to drill microholes (less than 4-inch diameter) with advanced drilling techniques. The mud system was tailored to the hydraulics of the hole geometries and rig characteristics required for microholes and is capable of mixing and circulating mud and removing solids while being self contained and having zero discharge capability. Key components of this system are two modified triplex mud pumps (High Pressure Slurry Pumps) for advanced Abrasive Slurry Jetting (ASJ) and a modified Gas-Liquid-Solid (GLS) Separator for well control, flow return and initial processing. The system developed also includes an additional component of an advanced version of ASJ which allows cutting through most all materials encountered in oil and gas wells including steel, cement, and all rock types. It includes new fluids and new ASJ nozzles. The jetting mechanism does not require rotation of the bottom hole assembly or drill string, which is essential for use with Coiled Tubing (CT). It also has low reactive forces acting on the CT and generates cuttings small enough to be easily cleaned from the well bore, which is important in …
Date: December 1, 2008
Creator: Oglesby, Kenneth
Object Type: Report
System: The UNT Digital Library
Software and codes for analysis of concentrating solar power technologies. (open access)

Software and codes for analysis of concentrating solar power technologies.

This report presents a review and evaluation of software and codes that have been used to support Sandia National Laboratories concentrating solar power (CSP) program. Additional software packages developed by other institutions and companies that can potentially improve Sandia's analysis capabilities in the CSP program are also evaluated. The software and codes are grouped according to specific CSP technologies: power tower systems, linear concentrator systems, and dish/engine systems. A description of each code is presented with regard to each specific CSP technology, along with details regarding availability, maintenance, and references. A summary of all the codes is then presented with recommendations regarding the use and retention of the codes. A description of probabilistic methods for uncertainty and sensitivity analyses of concentrating solar power technologies is also provided.
Date: December 1, 2008
Creator: Ho, Clifford Kuofei
Object Type: Report
System: The UNT Digital Library
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 94, No. 67, Ed. 1 Monday, December 1, 2008 (open access)

Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 94, No. 67, Ed. 1 Monday, December 1, 2008

Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date: December 1, 2008
Creator: Shance, Brenda
Object Type: Newspaper
System: The Gateway to Oklahoma History
Approximate analytical solutions for continuously focused beamsand single-species plasmas in thermal equilibrium (open access)

Approximate analytical solutions for continuously focused beamsand single-species plasmas in thermal equilibrium

None
Date: December 1, 2008
Creator: Startsev, Edward A. & Lund, Steven M.
Object Type: Article
System: The UNT Digital Library
Analysis of the charmed semileptonic decay D+ ---> rho0 mu+ nu (open access)

Analysis of the charmed semileptonic decay D+ ---> rho0 mu+ nu

The search for the fundamental constituents of matter has been pursued and studied since the dawn of civilization. As early as the fourth century BCE, Democritus, expanding the teachings of Leucippus, proposed small, indivisible entities called atoms, interacting with each other to form the Universe. Democritus was convinced of this by observing the environment around him. He observed, for example, how a collection of tiny grains of sand can make out smooth beaches. Today, following the lead set by Democritus more than 2500 years ago, at the heart of particle physics is the hypothesis that everything we can observe in the Universe is made of a small number of fundamental particles interacting with each other. In contrast to Democritus, for the last hundred years we have been able to perform experiments that probe deeper and deeper into matter in the search for the fundamental particles of nature. Today's knowledge is encapsulated in the Standard Model of particle physics, a model describing the fundamental particles and their interactions. It is within this model that the work in this thesis is presented. This work attempts to add to the understanding of the Standard Model by measuring the relative branching fraction of the …
Date: December 1, 2008
Creator: Luiggi, Eduardo E. & U., /Vanderbilt
Object Type: Thesis or Dissertation
System: The UNT Digital Library