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3-D computer simulations of EM fields in the APS vacuum chamber: Part 1, Frequency-domain analysis

Description: The vacuum chamber proposed for the storage ring of the 7-GeV Advanced Photon Source (APS) basically consists of two parts: the beam chamber and the antechamber, connected to each other by a narrow gap. A sector of 1-meter-long chamber with dosed end plates, to which are attached the 1-inch-diameter beampipes centered at the beam chamber, has been built for experimental purposes. The 3-D code MAFIA has been used to simulate the frequency-domain behaviors of EM fields in this setup. The results … more
Date: September 4, 1990
Creator: Chou, W. & Bridges, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

AC losses in Bi-2223 tapes and in the 1-kA transmission line model.

Description: We present here results of our study of the 5-m-long AC transmission tine model with 1 kA current capability at 77 K. Primary attention was paid to the current characteristics and AC losses in individual tapes and in the core of the cable. The losses were measured as a function of AC magnetic field amplitude in various orientations of magnetic field with respect to the plane of the tape and filaments. Hysteresis losses were. close to the losses in the AC regime, meaning that eddy current losses… more
Date: September 4, 1998
Creator: Fisher, L. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

ACCURATE QUANTIFICATION OF RADIOACTIVE MATERIALS BY X-RAY FLUORESCENCE: GALLIUM IN PLUTONIUM METAL.

Description: Determining the concentration of gallium in plutonium metal is imperative in manufacturing nuclear weapons. X-ray fluorescence (XRF) is an effective method used to quantify the gallium content in plutonium; however, the sample and specimen preparation methods currently employed could be improved from a time and safety standpoint. Recently, a dried residue specimen preparation method was developed as an alternative to the established aqueous approach. The method currently certified to prepare pl… more
Date: September 4, 2002
Creator: WORLEY, CHRISTOPHER GORDON
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Addendum 1 to CSER 97-025: PFP storage of 9.25/9.5 inch tall, 4.4 kg Pu cans on existing Vault 4 pedestals

Description: A nuclear criticality safety analysis has been performed to increase the approved plutonium mass limit for cans stored in Vault {number_sign}4 cubicles at PFP. The original CSER 96-025 accommodated the storage of 4.4 kg of plutonium in PuO, (5.0 kg PuO,) in Vault {number_sign}4 by requiring that half the cubicles be left vacant. This addendum allows for all the cubicles to be used, but with a fissile plutonium mass limit of 58 kg per cubicle. A mass limit for each cubical allows for storage of … more
Date: September 4, 1997
Creator: Hillesland, K.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ADVANCED HOT GAS FILTER DEVELOPMENT

Description: This report describes the fabrication and testing of continuous fiber ceramic composite (CFCC) based hot gas filters. The fabrication approach utilized a modified filament winding method that combined both continuous and chopped fibers into a novel microstructure. The work was divided into five primary tasks. In the first task, a preliminary set of compositions was fabricated in the form of open end tubes and characterized. The results of this task were used to identify the most promising compo… more
Date: September 4, 1998
Creator: WAGNER, RICHARD A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advances in fabrication of Ag-clad Bi-2223 superconductors.

Description: Powder-in-tube (PIT) processing was used to fabricate multifilamentary Ag-clad Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub y} (Bi-2223) superconductors for various electric power applications. Enhancements in the transport current properties of long lengths of multifilament tapes were achieved by increasing the packing density of the precursor powder, improving the mechanical deformation, and adjusting the cooling rate. The dependence of the critical current density on magnetic field and temperat… more
Date: September 4, 1998
Creator: Balachandran, U.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Airborne spread of foot-and-mouth disease - model intercomparison

Description: Foot-and-mouth disease is a highly infectious vesicular disease of cloven-hoofed animals caused by foot-and-mouth disease virus. It spreads by direct contact between animals, by animal products (milk, meat and semen), by mechanical transfer on people or fomites and by the airborne route - with the relative importance of each mechanism depending on the particular outbreak characteristics. Over the years a number of workers have developed or adapted atmospheric dispersion models to assess the ris… more
Date: September 4, 2008
Creator: Gloster, J; Jones, A; Redington, A; Burgin, L; Sorensen, J H; Turner, R et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Aircraft Nuclear Propulsion Project Quarterly Progress Report for Period Ending June 10, 1956 [Declassified Version]

Description: Progress report of the Oak Ridge National Laboratory Aircraft Nuclear Propulsion Project providing updates on various projects, experiments, and other work. This report includes summaries of project activities in: aircraft reactor test design, ART physics, ART instruments and controls, component development and testing, procurement and construction, ART, ETU, and in-pile loop operations, phase equilibrium studies, chemical reactions in molten salts, physical properties of molten materials, prod… more
Date: September 4, 1956
Creator: Jordan, W. H.; Cramer, S. J.; Miller, A. J. & Savelainen, A. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Aircraft Nuclear Propulsion Project Quarterly Progress Report for Period Ending June 10, 1956 [Secret Version]

Description: Progress report of the Oak Ridge National Laboratory Aircraft Nuclear Propulsion Project providing updates on various projects, experiments, and other work. This report includes summaries of project activities in: aircraft reactor test design, ART physics, ART instruments and controls, component development and testing, procurement and construction, ART, ETU, and in-pile loop operations, phase equilibrium studies, chemical reactions in molten salts, physical properties of molten materials, prod… more
Date: September 4, 1956
Creator: Jordan, W. H.; Cromer, S. J.; Miller, A. J. & Savelainen, A. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Alternate Funding Sources for the International Atomic Energy Agency

Description: Since 1957, the International Atomic Energy Agency (IAEA) has worked to ensure the safe and responsible promotion of nuclear technology throughout the world. The IAEA operates at the intersection of the Nuclear Nonproliferation Treaty’s (NPT) fourth and third articles, which guarantee Parties to the Treaty the right to peaceful uses of nuclear technology, provided those activities are placed under safeguards verified by the IAEA. However, while the IAEA has enjoyed substantial success and prest… more
Date: September 4, 2012
Creator: Toomey, Christopher; Wyse, Evan T.; Kurzrok, Andrew J. & Swarthout, Jordan M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Altitude-Wind-Tunnel Investigation of Performance Characteristics of a J47D Prototype (RX1-1) Turbojet Engine With Fixed-Area Exhaust Nozzle

Description: Report presenting an investigation to determine the overall performance of a prototype model of the J47D (RX1-1) turbojet engine with a fixed-area exhaust nozzle. Data was obtained for a range of engine speeds, altitudes, and Mach numbers. Results regarding the effect of those variables and generalization in terms of pumping characteristics are provided.
Date: September 4, 1951
Creator: Saari, M. J. & Wintler, J. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of sequential exchanges between vulnerable forces

Description: A multi-stage and -step analysis of sequences of crises or exchanges shows that aggressiveness on one side can induce rapid counter-value strikes by the other as well and knowledge that opponents will later become less aggressive does not mitigate the tendency to strike early in crises.
Date: September 4, 1998
Creator: Canavan, G. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of Ten Selected Science and Technology Policy Studies

Description: Since the end of the Cold War in the early 1990s, a number of reports have been prepared on a broad range of science and technology (S&T) policy issues, most notably dealing with national research and development (R&D) goals, priorities, and budgets, and university-government-industry relationships. This report discusses and analyzes ten of these S&T reports.
Date: September 4, 1997
Creator: Boesman, William C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analytical Methods for Discriminating Stardust in Aerogel Capture Media

Description: Comet 81P/Wild 2's serendipitous orbit change to the inner solar system in 1974 offered researchers a rare opportunity to sample cometary material from the Kuiper belt, a repository of material left over from solar system formation {approx}4.6 Gyr ago. NASA's Stardust mission intercepted the comet in January 2004 and returned with material collected from its tail in January 2006. The cometary material, consisting of particles ranging from 10 microns down to <2 nm, was collected in aerogel, a… more
Date: September 4, 2007
Creator: Brennan, S.; Ishii, H. A.; Bradley, J. P.; Luening, K.; Ignatyev, K. & Pianetta, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department

[Ann Alden and Sheaffer Pen Salesman]

Description: Photograph of Ann Alden looking at an array of pens being showcased by a Sheaffer Pen salesmen. Ann Alden is sitting in a chair in dark colored business attire with her legs crossed. She is wearing dark heels with short curly hair and makeup on. The Sheaffer Pen salesman is sitting in a dark suit, holding the pend which are displayed to the audience. to the left of the photograph, there is a camera that says "Star Telegram WBAP -TV" and a boom mic directly above the camera. Ann Alden is a stage… more
Date: September 4, 1951
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
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