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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.
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Report
open access

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.
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Report
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
Item Type: Refine your search to only Report
open access

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
Item Type: Refine your search to only Article
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.
Item Type: Refine your search to only Article
open access

Afghanistan: Post-Taliban Governance, Security, and U.S. Policy

Description: This report discusses the current political state of Iran, focusing particularly on the influence of the Taliban and other militant groups and on the leadership of Afghan President Hamid Karzai. This report also discusses the U.S.-Iran relationship and U.S. efforts under the Obama Administration to provide military, reconstructive, and stabilization aid.
Date: October 19, 2010
Creator: Katzman, Kenneth
Item Type: Refine your search to only Report
open access

Air Force C-17 Aircraft Procurement: Background and Issues for Congress

Description: This report provides background information on the C-17 Aircraft program, including previous appropriations, related programs, and issues for Congress. The primary issue for Congress in FY2010 is whether to procure additional C-17s. An additional issue is whether to pass legislation relating to the airlift aircraft force structure. Congress's decisions on these issues could affect DOD capabilities and funding requirements and the U.S. military aircraft industrial base.
Date: October 19, 2009
Creator: O'Rourke, Ronald
Item Type: Refine your search to only Report
open access

All hadronic B decay trigger with the CDF silicon vertex tracker

Description: Silicon Vertex tracks are of fundamental importance for reconstructing B meson decays at a hadron collider. The upgraded CDF detector will deploy an online Silicon Vertex Tracker in the level 2 trigger. We have studied how this new device exploits the Tevatron large B meson production to select hadronic B decays fundamental for measuring CP violation and B{sub s} mixing.
Date: October 19, 1999
Creator: Donati, Simone
Item Type: Refine your search to only Article
open access

Alpha Channeling in Mirror Machines

Description: Because of their engineering simplicity, high-β, and steady-state operation, mirror machines and related open-trap machines such as gas dynamic traps, are an attractive concept for achieving controlled nuclear fusion. In these open-trap machines, the confinement occurs by means of magnetic mirroring, without the magnetic field lines closing upon themselves within the region of particle confinement. Unfortunately, these concepts have not achieved to date very spectacular laboratory results, and … more
Date: October 19, 2005
Creator: Fisch, N. J.
Item Type: Refine your search to only Report
open access

Alternative Fuels and Advanced Technology Vehicles: Issues in Congress

Description: Key components of federal policies to reduce fuel consumption include the promotion of alternatives to petroleum fuels and the promotion of more efficient vehicles. This report provides an overview of current issues surrounding alternative fuels and advanced technology vehicles — issues discussed in further detail in other CRS reports referred to in each section.
Date: October 19, 2006
Creator: Yacobucci, Brent D.
Item Type: Refine your search to only Report
open access

Analysis Methods for Milky Way Dark Matter Satellite Detection

Description: The Gamma Ray Large Area Space Telescope (GLAST) Large Area Telescope (LAT) Dark Matter and New Physics Working group has been developing approaches for the indirect detection of in situ annihilation of dark matter. Our work has assumed that a significant component of dark matter is a new type of Weakly Interacting Massive Particle (WIMP) in the 100GeV mass range. The annihilation of two WIMPs results in the production of a large number of high energy gamma rays (>1GeV) that can be well meas… more
Date: October 19, 2007
Creator: Wang, Ping; Wai, Larry; Bloom, Elliott & /Stanford U., Phys. Dept. /SLAC
Item Type: Refine your search to only Article
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Analysis of historical gross gamma logging data from TY tank farm

Description: Gross gamma ray logs, recorded from January 1975 through mid-year 1994 as part of the Single-Shell Tank Farm Dry Well Surveillance Program, have been reanalyzed for the TY tank farm to locate the presence of mobile radionuclides in the subsurface. This report presents the TY tank farm gross gamma ray data in such a way as to assist others in their study of vadose zone mechanism.
Date: October 19, 1999
Creator: Myers, D. A.
Item Type: Refine your search to only Report
open access

Analysis of multiparticle Bose-Einstein correlations in ultra-relativistic heavy ion collisions

Description: We introduce the coalescence variables, a set of three boost-invariant kinematic quantities which may be used in analyzing n-particle correlations. These variables characterize the invariant mass of an n-particle and in three directions and separate the timelike and spacelike characteristics of the source. The analytic Kolehmanien-Gyulassy model is generalized to give two, three, and four-particle correlation functions, with coherence and Coulomb corrections applied to the basic formalism. We d… more
Date: October 19, 1990
Creator: Cramer, J. G.
Item Type: Refine your search to only Report
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