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3-D numerical analysis of a high-gain free-electron laser

Description: We present a novel approach to the 3-dimensional high-gain free- electron laser amplifier problem. The method allows us to write the laser field as an integral equation which can be efficiently and accurately evaluated on a small computer. The model is general enough to allow the inclusion of various initial electron beam distributions to study the gain reduction mechanism and its dependence on the physical parameters. 16 refs., 8 figs., 1 tab.
Date: October 19, 1988
Creator: Gallardo, J.C.
Partner: UNT Libraries Government Documents Department
open access

9/11 Commission Recommendations: Joint Committee on Atomic Energy — A Model for Congressional Oversight?

Description: From Summary: "This report provides an outline of the structure and history of the Joint Committee on Atomic Energy and raises 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."
Date: October 19, 2004
Creator: Davis, Christopher M.
Partner: UNT Libraries Government Documents Department

[1961 North Texas Homecoming King and Queen]

Description: Photograph of 1961 North Texas Homecoming King and Queen as they are crowned at Fouts Field. Mike Koury, USNT President, was elected king and Sandra Palmer was elected queen. Koury is wearing a football uniform, while a man places a crown on Palmer, who is holding a bouquet of flowers.
Date: October 19, 1961
Partner: UNT Libraries Special Collections
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1999 annual progress report -- Energy conservation team

Description: This report highlights progress achieved during FY 1999 under the Light-duty Fuels Utilization R and D Program. The program is comprised of two elements: the Advanced Petroleum-Based APB Fuels Program which focused on developing and testing advanced fuels for use with compression-ignition direct-injection (CIDI) engines and fuel cells and the Alternative Fuels Program which focused on Natural gas and natural gas derived fuels. The report contains 17 summaries of industry and National Laboratory… more
Date: October 19, 1999
Creator: Chalk, S.
Partner: UNT Libraries Government Documents Department
open access

2005 Base Closure and Realignment Selection Criteria

Description: Final 2005 Base Closure and Realignment Selection Criteria as determined by the Department of Defense. Memo signed by Michael Wynne (Acting Under Secretary of Defense for Acquisition, Technology and Logistics) and dated January 4th, 2005.
Date: October 19, 2005
Creator: United States. Department of Defense.
Partner: UNT Libraries Government Documents Department
open access

Accuracy of Volume Measurements in a Large Process Vessel

Description: The Non-Production Fuel Reprocessing Program involves the chemical processing of valuable reactor fuels received from privately owned power reactors. It is necessary therefore, to accurately measure the fuel material received in order to insure proper payment to reactor operator and to provide the Atomic Energy Commission with appropriate accountability data. The volume measurement study described herein was conducted in order to determine the limits of accuracy that could be obtained in measur… more
Date: October 19, 1959
Creator: Pleasance, C. L.
Partner: UNT Libraries Government Documents Department
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Accurate solution algorithms for incompressible multiphase flows

Description: A number of advances in modeling multiphase incompressible flow are described. These advances include high-order Godunov projection methods, piecewise linear interface reconstruction and tracking and the continuum surface force model. Examples are given.
Date: October 19, 1994
Creator: Rider, W. J.; Kothe, D. B.; Mosso, S. J.; Cerutti, J. H. & Hochstein, J. I.
Partner: UNT Libraries Government Documents Department
open access

Activation of Carbon-Hydrogen and Hydrogen-Hydrogen Bonds by Copper-Nitrenes: A Comparison of Density Functionality Theory with Single- and Multireference Correlation Consistent Composite Approaches

Description: Article on a comparison of density functional theory with single- and multireference correlation consistent composite approaches (ccCA).
Date: October 19, 2009
Creator: Tekarli, Sammer M.; Williams, T. Gavin & Cundari, Thomas R., 1964-
Partner: UNT College of Arts and Sciences
open access

Adaptive Perturbation Theory I: Quantum Mechanics

Description: Adaptive perturbation is a new method for perturbatively computing the eigenvalues and eigenstates of quantum mechanical Hamiltonians that heretofore were not believed to be treatable by such methods. The novel feature of adaptive perturbation theory is that it decomposes a given Hamiltonian, H, into an unperturbed part and a perturbation in a way which extracts the leading non-perturbative behavior of the problem exactly. This paper introduces the method in the context of the pure anharmonic o… more
Date: October 19, 2005
Creator: Weinstein, Marvin
Partner: UNT Libraries Government Documents Department
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Adaptive Perturbation Theory: Quantum Mechanics and Field Theory

Description: Adaptive perturbation is a new method for perturbatively computing the eigenvalues and eigenstates of quantum mechanical Hamiltonians that are widely believed not to be solvable by such methods. The novel feature of adaptive perturbation theory is that it decomposes a given Hamiltonian, H, into an unperturbed part and a perturbation in a way which extracts the leading non-perturbative behavior of the problem exactly. In this talk I will introduce the method in the context of the pure anharmonic… more
Date: October 19, 2005
Creator: Weinstein, Marvin
Partner: UNT Libraries Government Documents Department
open access

ADVANCING THE ION BEAM THIN FILM PLANARIZATION PROCESS FOR THE SMOOTHING OF SUBSTRATE PARTICLES

Description: For a number of technologies small substrate contaminants are undesirable, and for one technology in particular, extreme ultraviolet lithography (EUVL), they can be a very serious issue. We have demonstrated that the Ion Beam Thin Film Planarization Process, a coating process designed to planarize substrate asperities, can be extended to smooth {approx}70 nm and {approx}80 nm diameter particles on EUVL reticle substrates to a height of {approx}0.5 nm, which will render them noncritical in an EU… more
Date: October 19, 2004
Creator: Mirkarimi, P B; Spiller, E; Baker, S L; Robinson, J C; Stearns, D G; Liddle, J A et al.
Partner: UNT Libraries Government Documents Department

[Aerial Photograph of Denton County, DJR-4P-5]

Description: Aerial photograph of an area of land in Denton County, Texas surveyed by the Texas Highway Department with handwritten notes of numbers, county line indicator, and roads. Major roads include: I-35E. Major land structures include: Elm Fork Trinity River, Willow Springs Branch, and Indian Creek.
Date: October 19, 1958
Creator: Texas. Highway Department. Planning Survey Division.
Location: None
Partner: UNT Libraries Special Collections

[Aerial Photograph of Denton County, DJR-4P-9]

Description: Aerial photograph of an area of land in Denton County, Texas surveyed by the Texas Highway Department. Major roads include: E State Hwy 121 and FM544. Major land features include: Indian Creek, Office Creek, Lewisville Lake, Lake Dallas and Garza Little Elm Reservoir.
Date: October 19, 1958
Creator: Texas. Highway Department. Planning Survey Division.
Location: None
Partner: UNT Libraries Special Collections

[Aerial Photograph of Denton County, DJR-4P-11]

Description: Aerial photograph of land area surrounding Denton County, Texas surveyed by the Texas Highway Department. Major streets include: Sam Rayburn Tollway, Main St., North Colony Blvd., and Lebanon Rd. Major land features include: Lewisville Lake, Wynnwood Park, and LLELA Nature Preserve.
Date: October 19, 1958
Creator: Texas. Highway Department. Planning Survey Division.
Location: None
Partner: UNT Libraries Special Collections
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