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''The Incubation Period for Void Swelling and its Dependence on Temperature, Dose Rate, and Dislocation Structure Evolution''

Description: Void swelling in structural materials used for nuclear reactors is characterized by an incubation period whose duration largely determines the usefulness of the material for core components. Significant evolution of the dislocation and void microstructures that control radiation-induced swelling can occur during this period. Thus, a theory of incubation must treat time-dependent void nucleation in combination with dislocation evolution, in which the sink strengths of voids and dislocations chan… more
Date: June 13, 2002
Creator: Surh, M. P.; Sturgeon, J. B. & Wolfer, W. G.
Partner: UNT Libraries Government Documents Department
open access

New genome-wide methods bring more power to yeast as a modelorganism

Description: A collection of 6,000 mutant yeast strains spanning nearlyevery gene offers new promise for identifying human genes involved incellular responses to drugs, radiation and other treatments.
Date: June 13, 2002
Creator: Game, John C.
Partner: UNT Libraries Government Documents Department
open access

Kaon Production and Kaon to Pion Ratio in Au+Au Collisions at {radical}(s{sub NN})=130 GeV

Description: Mid-rapidity transverse mass spectra and multiplicity densities of charged and neutral kaons are reported for Au+Au collisions at {radical}s{sub NN}=130 GeV at RHIC. The spectra are exponential in transverse mass, with an inverse slope of about 280 MeV in central collisions. The multiplicity densities for these particles scale with the negative hadron pseudo-rapidity density. The charged kaon to pion ratios are K{sup +}/{pi}{sup -} = 0.161 {+-} 0.002(stat) {+-} 0.024(syst) and K{sup -}/{pi}{sup… more
Date: June 13, 2002
Creator: Adler, C.; Ahammed, Z.; Allgower, C.; Amonett, J.; Anderson, B. D.; Anderson, M. et al.
Partner: UNT Libraries Government Documents Department
open access

STATUS OF THE MINOS EXPERIMENT.

Description: The author presents the status of the long baseline neutrino oscillation experiment MINOS at Fermi National Accelerator Laboratory (Fermilab). He also summarizes the status of the detector and beam construction, the expected event rates and sensitivity to physics. He also comments on possible future plans to improve the performance of the experiment.
Date: September 13, 2002
Creator: DIWAN,M.
Partner: UNT Libraries Government Documents Department
open access

Double K-vacancy production by x-ray photoionization.

Description: We have studied double K-shell photoionization of Ne and Mo (Z = 10 and 42) at the Advanced Photon Source. Double K-vacancy production in Ne was observed by recording the KK-KLL Auger hypersatellite spectrum. Comparison is made with calculations using the multiconfiguration Dirac-Fock method. For Mo, double K-vacancy production was observed by recording the K{alpha}, {beta} fluorescence hypersatellite and satellite x rays in coincidence. From the intensities of the Auger or x-ray hypersatellite… more
Date: August 13, 2002
Creator: Southworth, S. H.; Dunford, R. W.; Kanter, E. P.; Krassig, B.; Young, L.; Armen, G. B. et al.
Partner: UNT Libraries Government Documents Department
open access

Correlations between D and Dbar mesons in high energy photoproduction

Description: Over 7000 events containing a fully reconstructed D{bar D} pair have been extracted from data recorded by the FOCUS photoproduction experiment at Fermilab. Preliminary results from a study of correlations between D and {bar D} mesons are presented. Correlations are used to study perturbative QCD predictions and investigate non-perturbative effects. We also present a preliminary result on the production of {psi}(3770).
Date: November 13, 2002
Creator: Gottschalk, Erik E
Partner: UNT Libraries Government Documents Department
open access

The MESERAN Method: Rapid Quantification of Non-Volatile Organic Residue (NVOR)

Description: The precision analytical technique known as MESERAN Analysis permits quantitative measurement of the level of preexisting nonvolatile organic residue (NVOR) on a substrate from <1 nanogram (ng)/cm{sup 2} to > 100 micrograms ({micro}g)/cm{sup 2} in 2 minutes. MESERAN Analysis is also applicable to determining NVOR in solvents and solvent extracts. The MESERAN method is able to quantify organic contamination levels down to and below 1 ng by depositing as little as 10 microliters ({micro}L) … more
Date: June 13, 2002
Creator: Benkovich, M.G.
Partner: UNT Libraries Government Documents Department
open access

Dynamic information architecture system (DIAS) : multiple model simulation management.

Description: Dynamic Information Architecture System (DIAS) is a flexible, extensible, object-based framework for developing and maintaining complex multidisciplinary simulations of a wide variety of application contexts. The modeling domain of a specific DIAS-based simulation is determined by (1) software Entity (domain-specific) objects that represent the real-world entities that comprise the problem space (atmosphere, watershed, human), and (2) simulation models and other data processing applications tha… more
Date: May 13, 2002
Creator: Simunich, K. L.; Sydelko, P.; Dolph, J. & Christiansen, J.
Partner: UNT Libraries Government Documents Department
open access

Determination and Correction of the Linear Lattice of the APS Storage Ring.

Description: We have created precise linear models of the storage ring in terms of {beta}-functions for both low-emittance and high-emittance lattices. Using these models, the {beta}-function beating corrections have been successfully applied. The lifetime was increased by 40% for the low-emittance lattice as a result of the corrections. The models allow the user to apply predictable and precise changes to the existing lattice. For example, after applying the {beta}-function corrections, the {beta}-function… more
Date: June 13, 2002
Creator: Sajaev, V. & Emery, L.
Partner: UNT Libraries Government Documents Department
open access

Evaluation of a CIDI pre-transmission parallel hybrid drivetrain with CVT.

Description: Argonne National Laboratory (ANL) is the lead laboratory for hardware-in-the-loop (HIL) testing and technology validation for the U.S. Department of Energy's Office of Advanced Automotive Technologies (DOE OAAT). In this role, ANL contributes to DOE OAAT goals by setting technical targets and evaluating new technologies in a vehicle systems context, with a focus on hybrid electric vehicle (HEV) technology. ANL employs a unique integrated process based on powerful simulation tools and experiment… more
Date: August 13, 2002
Creator: Pasquier, M.; Duoba, M.; Hardy, K.; Rousseau, A. & Shimcoski, D.
Partner: UNT Libraries Government Documents Department
open access

Source Release Modeling for the Idaho National Engineering and Environmental Laboratory's Subsurface Disposal Area

Description: A source release model was developed to determine the release of contaminants into the shallow subsurface, as part of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) evaluation at the Idaho National Engineering and Environmental Laboratory's (INEEL) Subsurface Disposal Area (SDA). The output of the source release model is used as input to the subsurface transport and biotic uptake models. The model allowed separating the waste into areas that match the actual … more
Date: May 13, 2002
Creator: Becker, B.H.
Partner: UNT Libraries Government Documents Department
open access

SO(10) GUT models and their present success in explaining mass and mixing data

Description: Some features of SO(10) GUT models are reviewed, and a number of such models in the literature are compared. While some have been eliminated by recent neutrino data, others are presently successful in explaining the quark and lepton mass and mixing data. A short description of one very predictive model is given which illustrates some of the features discussed. Future tests of the models are pointed out including one which contrasts sharply with those models based on an L{sub e}-L{sub {mu}}-L{su… more
Date: December 13, 2002
Creator: Albright, Carl H.
Partner: UNT Libraries Government Documents Department
open access

Progress in the fabrication of high aspect ratio zone plates by soft x-ray lithography.

Description: Soft x-ray lithography technology has been applied to fabrication of phase shifting Fresnel Zone Plate (FZP's) for hard x-rays. Effects of the exposure conditions, developing system, and electroplating process parameters on line width and aspect ratio have been analyzed. The process has been optimized and an aspect ratio of 11 has been achieved for 110 nm outermost zone width. SEM and AFM have been used for preliminary metrology of the FZPs. The FZP optical performance was characterized at 8 ke… more
Date: August 13, 2002
Creator: Divan, R.; Mancini, D. C.; Moldovan, N. A.; Lai, B.; Assoufid, L.; Leondard, Q. et al.
Partner: UNT Libraries Government Documents Department
open access

Top quark physics with CDF

Description: In this contributions to the proceedings of the HCP conference I will give a brief overview on the CDF upgrade for Run II relevant to top quark physics analyses. I will discuss the CDF top physics program, with particular emphasis to the search for single top quark production. This includes a review of single top quark analyses in Run I.
Date: December 13, 2002
Creator: Wagner, W.
Partner: UNT Libraries Government Documents Department
open access

HIGH PERPENDICULAR CHARGED PARTICLES AZIMUTHAL CORRELATION IN PHENIX.

Description: A two-particle azimuthal correlation analysis of the PHENIX data taken at {radical}s{sub NN} = 130 GeV/c is discussed. A comparison of the magnitude of v{sub 2}(p{perpendicular}) extracted from the correlation analysis with those obtained from a reaction plane analysis by the STAR collaboration, indicate surprisingly small non-flow contributions. A similar comparison obtained from the CERES experiment at {radical}s{sub NN} = 17 GeV/c shows stronger non-flow contributions for a similar p{perpend… more
Date: January 13, 2002
Creator: RAK,J. FOR THE PHENIX COLLABORATION
Partner: UNT Libraries Government Documents Department
open access

Migrating birds : assessment of impact on 915-MHz radar wind profiler performance at the Atmospheric Radiation Measurement Program's southern great plains.

Description: The U. S. Department of Energy's Atmospheric Radiation Measurement Program is running a small network of 915-MHz radar wind profilers (RWPs) at its Southern Great Plains Cloud and Radiation Testbed site in northern Oklahoma and southern Kansas. Seasonal migration of passerines may cause significant interference with the operation of 915-MHz RWPs. The extent of this ''bird jamming'' depends on the radar's parameters, the place of deployment, the season, and the time of day. This poster presents … more
Date: March 13, 2002
Creator: Pekour, M. S.
Partner: UNT Libraries Government Documents Department
open access

Transition to a nuclear/hydrogen energy system.

Description: The paper explores the motivation for the transition to a nuclear/hydrogen system. For such a transition to be successful the technologies employed must be able to generate enough hydrogen to displace a significant fraction of the petroleum fuels used in the transportation and process heat sectors. This hydrogen must be generated in a manner that is compatible with the environment and independent of foreign fuels. Nuclear energy, along with contributions from wind, solar, and geothermal resourc… more
Date: August 13, 2002
Creator: Walters, L.; Wade, D. & Lewis, D.
Partner: UNT Libraries Government Documents Department
open access

A preliminary comparison of beam instabilities among ESRF, APS, and spring-8 x-ray storage ring light sources.

Description: A collaboration has been established among the three highest energy storage ring synchrotron light sources: European Synchrotron Radiation Facility (ESRF) (6 GeV), Advanced Photon Source (APS) (7 GeV), and Super Photon Ring (SPring-8) (8 GeV). The goal is to enhance understanding of impedance and beam instability characteristics for present performance and future machine development. In this paper, we compare the beam instability characteristics of the three rings and present a preliminary disc… more
Date: June 13, 2002
Creator: Harkay, K.; Nagaoka, R.; Revol, J.-L. & Nakamura, T.
Partner: UNT Libraries Government Documents Department
open access

An evaluation of a user-level data transfer mechanism for high-performance networks.

Description: In this paper, we describe FOBS: a simple user-level communication protocol designed to take advantage of the available bandwidth in a high-bandwidth, high-delay network environment. We compare the performance of FOBS with that of TCP both with and without the so-called Large Window extensions designed to improve the performance of TCP in this type of network environment. We show that FOBS can obtain on the order of 90% of the available bandwidth across both short- and long-haul high-performanc… more
Date: August 13, 2002
Creator: Dickens, P. M. & Gropp, W.
Partner: UNT Libraries Government Documents Department
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