Sample records for 12a dpwa multichannel

  1. List mode multichannel analyzer

    DOE Patents [OSTI]

    Archer, Daniel E. (Livermore, CA); Luke, S. John (Pleasanton, CA); Mauger, G. Joseph (Livermore, CA); Riot, Vincent J. (Berkeley, CA); Knapp, David A. (Livermore, CA)

    2007-08-07T23:59:59.000Z

    A digital list mode multichannel analyzer (MCA) built around a programmable FPGA device for onboard data analysis and on-the-fly modification of system detection/operating parameters, and capable of collecting and processing data in very small time bins (<1 millisecond) when used in histogramming mode, or in list mode as a list mode MCA.

  2. Fractional channel multichannel analyzer

    DOE Patents [OSTI]

    Brackenbush, L.W.; Anderson, G.A.

    1994-08-23T23:59:59.000Z

    A multichannel analyzer incorporating the features of the present invention obtains the effect of fractional channels thus greatly reducing the number of actual channels necessary to record complex line spectra. This is accomplished by using an analog-to-digital converter in the asynchronous mode, i.e., the gate pulse from the pulse height-to-pulse width converter is not synchronized with the signal from a clock oscillator. This saves power and reduces the number of components required on the board to achieve the effect of radically expanding the number of channels without changing the circuit board. 9 figs.

  3. Multi-channel polarized thermal emitter

    DOE Patents [OSTI]

    Lee, Jae-Hwang; Ho, Kai-Ming; Constant, Kristen P

    2013-07-16T23:59:59.000Z

    A multi-channel polarized thermal emitter (PTE) is presented. The multi-channel PTE can emit polarized thermal radiation without using a polarizer at normal emergence. The multi-channel PTE consists of two layers of metallic gratings on a monolithic and homogeneous metallic plate. It can be fabricated by a low-cost soft lithography technique called two-polymer microtransfer molding. The spectral positions of the mid-infrared (MIR) radiation peaks can be tuned by changing the periodicity of the gratings and the spectral separation between peaks are tuned by changing the mutual angle between the orientations of the two gratings.

  4. Spectroscopy with Multichannel Correlation Radiometers

    E-Print Network [OSTI]

    A. I. Harris

    2005-04-20T23:59:59.000Z

    Correlation radiometers make true differential measurements in power with high accuracy and small systematic errors. This receiver architecture has been used in radio astronomy for measurements of continuum radiation for over 50 years; this article examines spectroscopy over broad bandwidths using correlation techniques. After general discussions of correlation and the choice of hybrid phase, experimental results from tests with a simple laboratory multi-channel correlation radiometer are shown. Analysis of the effect of the input hybrid's phase shows that a 90 degree hybrid is likely to be the best general choice for radio astronomy, depending on its amplitude match and phase flatness with frequency. The laboratory results verify that the combination of the correlation architecture and an analog lag correlator is an excellent method for spectroscopy over very wide bandwidths.

  5. Multichannel framework for singular quantum mechanics

    SciTech Connect (OSTI)

    Camblong, Horacio E., E-mail: camblong@usfca.edu [Department of Physics and Astronomy, University of San Francisco, San Francisco, CA 94117-1080 (United States); Epele, Luis N., E-mail: epele@fisica.unlp.edu.ar [Laboratorio de Física Teórica, Departamento de Física, IFLP, CONICET, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C.C. 67–1900 La Plata (Argentina); Fanchiotti, Huner, E-mail: huner@fisica.unlp.edu.ar [Laboratorio de Física Teórica, Departamento de Física, IFLP, CONICET, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C.C. 67–1900 La Plata (Argentina)] [Laboratorio de Física Teórica, Departamento de Física, IFLP, CONICET, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C.C. 67–1900 La Plata (Argentina); García Canal, Carlos A., E-mail: garcia@fisica.unlp.edu.ar [Laboratorio de Física Teórica, Departamento de Física, IFLP, CONICET, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C.C. 67–1900 La Plata (Argentina); Ordóñez, Carlos R., E-mail: ordonez@uh.edu [Department of Physics, University of Houston, Houston, TX 77204-5506 (United States)

    2014-01-15T23:59:59.000Z

    A multichannel S-matrix framework for singular quantum mechanics (SQM) subsumes the renormalization and self-adjoint extension methods and resolves its boundary-condition ambiguities. In addition to the standard channel accessible to a distant (“asymptotic”) observer, one supplementary channel opens up at each coordinate singularity, where local outgoing and ingoing singularity waves coexist. The channels are linked by a fully unitary S-matrix, which governs all possible scenarios, including cases with an apparent nonunitary behavior as viewed from asymptotic distances. -- Highlights: •A multichannel framework is proposed for singular quantum mechanics and analogues. •The framework unifies several established approaches for singular potentials. •Singular points are treated as new scattering channels. •Nonunitary asymptotic behavior is subsumed in a unitary multichannel S-matrix. •Conformal quantum mechanics and the inverse quartic potential are highlighted.

  6. Multichannel photodiode detector for ultrafast optical spectroscopy

    E-Print Network [OSTI]

    Mertelj, T; Borzda, T; Vaskivskyi, I; Pogrebna, A; Mihailovic, D

    2014-01-01T23:59:59.000Z

    Construction and characterization of a multichannel photodiode detector based on commercially available components with high signal to noise of $\\sim10^{6}$ and a rapid frame rate, suitable for time resolved femtosecond spectroscopy with high repetition femtosecond sources, is presented.

  7. Multichannel Scheduling and Its Connection to Queueing Network Control Problem

    E-Print Network [OSTI]

    Islam, M. Saif

    Multichannel Scheduling and Its Connection to Queueing Network Control Problem Pouya Tehrani , Qing scheduling problem and a closed queueing network control problem which is known to be EXP-complete, we obtain {potehrani,qzhao}@ucdavis.edu Abstract--We consider the multichannel scheduling problem where the data rate

  8. A New Compact Multichannel Receiver for Underwater Wireless Communication Networks

    E-Print Network [OSTI]

    Abdi, Ali

    size of the proposed receiver makes it particularly useful for small unmanned underwater vehicles1 A New Compact Multichannel Receiver for Underwater Wireless Communication Networks Ali Abdi of the particle velocity, in addition to the pressure, multichannel reception can be accomplished in underwater

  9. Multi-channel blind system identification for central hemodynamic monitoring

    E-Print Network [OSTI]

    Zhang, Yi, 1973-

    2002-01-01T23:59:59.000Z

    Multi-channel Blind System Identification (MBSI) is a technique for estimating both an unknown input and unknown channel dynamics from simultaneous output measurements at different channels through which the input signal ...

  10. Multichannel Blind Identification: From Subspace to Maximum Likelihood Methods

    E-Print Network [OSTI]

    Tong, Lang

    Multichannel Blind Identification: From Subspace to Maximum Likelihood Methods LANG TONG, MEMBER, IEEE, AND SYLVIE PERREAU Invited Paper A review of recent blind channel estimation algorithms is pre-- Blind equalization, parameter estimation, system identification. I. INTRODUCTION A. What Is Blind

  11. Multichannel Blind Deconvolution of Non-minimum Phase Systems Using Information

    E-Print Network [OSTI]

    Vialatte, François

    1 Multichannel Blind Deconvolution of Non-minimum Phase Systems Using Information Backpropagation L;210 Multichannel Blind Deconvolution of Non-minimum Phase Systems Using Information Backpropagation L.-Q. Zhang, A- composition approach, for multichannel blind de- convolution of non-minimumphase systems. In 20] we has

  12. Multichannel Blind Deconvolution of the Short-Exposure Astronomical Images Filip Sroubek, Jan Flusser, Tomas Suk

    E-Print Network [OSTI]

    Sroubek, Filip

    Multichannel Blind Deconvolution of the Short-Exposure Astronomical Images Filip Sroubek, Jan@asu.cas.cz Abstract In this paper we present a new multichannel blind deconvolution method based on so-called subspace single channel ones. In comparison with earlier multichannel blind deconvolution techniques the subspace

  13. PECVD Silicon Carbide Waveguides for Multichannel G. Pandraud

    E-Print Network [OSTI]

    Technische Universiteit Delft

    PECVD Silicon Carbide Waveguides for Multichannel Sensors G. Pandraud Kavli Institute of Nano Deposition (PECVD) Silicon Carbide (SiC) waveguides. Thin SiC films have been deposited onto Si substrates with a SiO2 film acting as a cladding layer around the carbide core. In the sensor, the evanescent tale

  14. Updated Multichannel Infrared Solar Spectrograph at Purple Mountain Observatory #

    E-Print Network [OSTI]

    Li, Hui

    in solar flare [12] , which is # Supported by the National Natural Science Foundation of China (NSFC, NoUpdated Multichannel Infrared Solar Spectrograph at Purple Mountain Observatory # LI Hui(©¿), YOU Jianqi(Æ?OÅ ), WU Qindi(Ã?,l) and YU Xingfeng(â?¢lb) Purple Mountain Observatory, CAS, Nanjing 210008, China

  15. Updated Multichannel Infrared Solar Spectrograph at Purple Mountain Observatory

    E-Print Network [OSTI]

    Li, Hui

    Updated Multichannel Infrared Solar Spectrograph at Purple Mountain Observatory LI Hui( û), YOU Jianqi( � ), WU Qindi( ¸Ð) and YU Xingfeng(åÐ ) Purple Mountain Observatory, CAS, Nanjing 210008, China National Astronomical Observatories, CAS, Beijing 100012, China Email: lihui@mail.pmo.ac.cn Tel: 025

  16. Receiver Antenna Array for a Multichannel Sense-and-Avoid Radar for Small UAVs

    E-Print Network [OSTI]

    Kansas, University of

    Receiver Antenna Array for a Multichannel Sense-and-Avoid Radar for Small UAVs Jose Francisco for use in a sense-and-avoid radar for use in the Cessna C-172 and small Unmanned Aerial Vehicles (UAVs. . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . ..10 1.1.1 Multichannel Sense-and-Avoid Radar for UAVs. . . . . . . . . . . . . . . . . . . . . . ...10

  17. Single ultrafast diffusive conduction based optoelectronic switch for multi-channel operation

    E-Print Network [OSTI]

    Miller, David A. B.

    Single ultrafast diffusive conduction based optoelectronic switch for multi-channel operation Fatih to multi-channel operation, including Green's function diffusive conduction solution and crosstalk conduction based optoelectronic switches that accommodate >100 optical channels (with 2,000mm-2 channel

  18. MULTICHANNEL BLIND DECONVOLUTION OF ARBITRARY SIGNALS: ADAPTIVE ALGORITHMS AND STABILITY ANALYSIES

    E-Print Network [OSTI]

    Douglas, Scott C.

    MULTICHANNEL BLIND DECONVOLUTION OF ARBITRARY SIGNALS: ADAPTIVE ALGORITHMS AND STABILITY ANALYSIES for the multichannel blind deconvolution of arbitrary non-Gaussian source mixtures. Two of the algorithms are spa- tia-temporal extensions of recently-derived blind signal separation algorithms that combine kurta- sis-based contrast

  19. Simultaneous Greedy Analysis Pursuit for Compressive Sensing of Multi-Channel ECG Signals

    E-Print Network [OSTI]

    Simultaneous Greedy Analysis Pursuit for Compressive Sensing of Multi-Channel ECG Signals Yurrit sensing for multi- channel ECG signals. In contrast to the traditional sparse approach where the signal of compressive sensing for ECG signals. Moreover, to efficiently recover multi-channel ECG signals, clas- sical

  20. Development of multichannel low-energy neutron spectrometer

    SciTech Connect (OSTI)

    Arikawa, Y., E-mail: arikawa-y@ile.osaka-u.ac.jp; Nagai, T.; Abe, Y.; Kojima, S.; Sakata, S.; Inoue, H.; Utsugi, M.; Iwasa, Y.; Sarukura, N.; Nakai, M.; Shiraga, H.; Fujioka, S.; Azechi, H. [Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka (Japan); Murata, T. [Kumamoto University, 2-40-1 Kurokami, Kumamoto 860-8555 (Japan)

    2014-11-15T23:59:59.000Z

    A multichannel low-energy neutron spectrometer for down-scattered neutron (DSN) measurements in inertial confinement fusion (ICF) experiments has been developed. Our compact-size 256-channel lithium-glass-scintillator-based spectrometer has been implemented and tested in ICF experiments with the GEKKO XII laser. We have performed time calibration of the 256-channel analog-to-digital convertor system used for DSN measurements via X-ray pulse signals. We have clearly observed the DD-primary fusion neutron signal and have successfully studied the detector's impulse response. Our detector is soon to be implemented in future ICF experiments.

  1. PCA-multiport, a universal computer-based multichannel analyzer

    SciTech Connect (OSTI)

    Seymour, R.; Bedwell, M.; Stockton, S.; Beal, T.; Ahsan, Z.

    1991-11-01T23:59:59.000Z

    Nearly a decade has passed since Tennelec/Nucleus introduced the first personal-computer-based multichannel analyzer (MCA). These new MCA architectures, including plug-in cards, nuclear instrumentation module (NIM), and non-NIM versions, have revolutionized spectroscopy measurements and virtually replaced conventional one-box MCAs. The Tennelec personal computer analyzer (PCA)-Multiport is a third-generation system capable of interfacing with virtually any computer. It is designed to be used for most energy and timing measurements commonly encountered in nuclear spectroscopy.

  2. Multichannel Quantum Defect Theory of Strontium Rydberg Series

    E-Print Network [OSTI]

    C L Vaillant; M P A Jones; R M Potvliege

    2014-02-24T23:59:59.000Z

    Using the reactance matrix approach, we systematically develop new multichannel quantum defect theory models for the singlet and triplet S, P, D and F states of strontium based on improved energy level measurements. The new models reveal additional insights into the character of doubly excited perturber states, and the improved energy level measurements for certain series allow fine structure to be resolved for those series' perturbers. Comparison between the predictions of the new models and those of previous empirical and \\emph{ab initio} studies reveals good agreement with most series, however some discrepancies are highlighted. Using the multichannel quantum defect theory wave functions derived from our models we calculate other observables such as Land\\'e $g_J$-factors and radiative lifetimes. The analysis reveals the impact of perturbers on the Rydberg state properties of divalent atoms, highlighting the importance of including two-electron effects in the calculations of these properties. The work enables future investigations of properties such as Stark maps and long-range interactions of Rydberg states of strontium.

  3. Multichannel CdZnTe Gamma Ray Spectrometer

    SciTech Connect (OSTI)

    F. P. Doty; C. L. Lingren; B. A. Apotovsky; J. Brunsch; J. F. Butler; T. Collins; R. L. Conwell; S. Friesenhahn; J. Gormley; B. Pi; S. Zhao (Digirad Corp., San Diego, CA); F. L. Augustine, Augustine Engineering, Encinitas, CA; B. A. Bennet; E. Cross; R. B. James (Sandia Nat'l. Labs.)

    1998-07-22T23:59:59.000Z

    A 3 cm{sup 3} multichannel gamma spectrometer for DOE applications is under development by Digirad Corporation. The device is based on a position sensitive detector packaged in a compact multi-chip module (MCM) with integrated readout circuitry. The modular, multichannel design will enable identification and quantitative analysis of radionuclides in extended sources, or sources containing low levels of activity. The MCM approach has the advantages that the modules are designed for imaging applications, and the sensitivity can be arbitrarily increased by increasing the number of pixels, i.e. adding modules to the instrument. For a high sensitivity probe, the outputs for each pixel can be corrected for gain and offset variations, and summed digitally. Single pixel results obtained with discrete low noise readout indicate energy resolution of 3 keV can be approached with currently available CdZnTe. The energy resolution demonstrated to date with MCMs for 511 keV gamma rays is 10 keV.

  4. Adaptive enhancement of magnetoencephalographic signals via multichannel filtering

    SciTech Connect (OSTI)

    Lewis, P.S.

    1989-01-01T23:59:59.000Z

    A time-varying spatial/temporal filter for enhancing multichannel magnetoencephalographic (MEG) recordings of evoked responses is described. This filter is based in projections derived from a combination of measured data and a priori models of the expected response. It produces estimates of the evoked fields in single trial measurements. These estimates can reduce the need for signal averaging in some situations. The filter uses the a priori model information to enhance responses where they exist, but avoids creating responses that do not exist. Examples are included of the filter's application to both MEG single trial data containing an auditory evoked field and control data with no evoked field. 5 refs., 7 figs.

  5. IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, VOL. 55, NO. 8, AUGUST 2008 1935 Multichannel Electrocardiogram Decomposition

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, VOL. 55, NO. 8, AUGUST 2008 1935 Multichannel; revised November 15, 2007. Asterisk indicates corresponding author. *R. Sameni is with the Biomedical Signal and Image Processing Laboratory (BISIPL), School of Electrical Engineering, Sharif University

  6. 1166 IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, VOL. 48, NO. 6, DECEMBER 1999 A Multichannel Photon Counting System for

    E-Print Network [OSTI]

    Athens, University of

    of which are in the fields of medical electronics (confocal microscopy) and bio-electronics, air pollution. Index Terms-- Air pollution, laser gas sensor, multichannel gas monitoring, optoelectronic measurement a multichannel photon- counting system for the in situ quantitative monitoring of up to five air pollutants

  7. Multi-channel Absorption of Photons at Energies above 1 TeV

    E-Print Network [OSTI]

    A. Subramanian

    2006-07-24T23:59:59.000Z

    It is shown that the absorption of photons at energies > 1 TeV (much higher than the mass of the Higgs boson ~ 100 GeV) is a multi-channel one as opposed to the purely electron pair like absorption at lower energies. The observation on muons and gamma rays from Cygnus X-3 point source at these energies (1 TeV to 10 TeV) is quantitatively accounted for. The expected multi-channel cross-sections of photons in air as a function of energy is given both for Coulomb dissociation and nuclear absorption upto limiting energies of 10^9 GeV.

  8. MULTI-CHANNEL PSYCHOACOUSTICALLY MOTIVATED SPEECH ENHANCEMENT Justinian Rosca, Radu Balan

    E-Print Network [OSTI]

    Maryland at College Park, University of

    MULTI-CHANNEL PSYCHOACOUSTICALLY MOTIVATED SPEECH ENHANCEMENT Justinian Rosca, Radu Balan Siemens). Research in microphone-array systems indi- cate the promise of such techniques for speech enhancement approach ex- ploits the microphone array signals to further enhance the useful speech signal at reduced

  9. Speech enhancement with multichannel Wiener filter techniques in multimicrophone binaural hearing aids

    E-Print Network [OSTI]

    Speech enhancement with multichannel Wiener filter techniques in multimicrophone binaural hearing October 2008 This paper evaluates speech enhancement in binaural multimicrophone hearing aids by noise in terms of speech enhancement while preserving the binaural cues of the speech component. b A significant

  10. THE NEW MULTICHANNEL RADIOSPECTROGRAPH ARTEMIS-IV/HECATE, OF THE UNIVERSITY OF ATHENS

    E-Print Network [OSTI]

    Athens, University of

    THE NEW MULTICHANNEL RADIOSPECTROGRAPH ARTEMIS-IV/HECATE, OF THE UNIVERSITY OF ATHENS C. CAROUBALOS@cc.uoa.gr (Received 14 April 2000; accepted in revised form 5 February 2001) Abstract. We present the new solar shocks, the acceleration of energetic particles from shock waves, and the relation of energetic electrons

  11. A Specific Multi-channel Photon-Counting Unit for Air-Pollution Measurement

    E-Print Network [OSTI]

    Athens, University of

    A Specific Multi-channel Photon-Counting Unit for Air-Pollution Measurement Papageorgas P.1.g. confocal microscopy), air pollution optical measurements, laser sounding of the atmosphere for the in situ quantitative monitoring of up to five air pollutants simultaneously and one calibration channel

  12. New plasma measurements with a multichannel millimeter-wave fluctuation diagnostic system in the DIII-D tokamak

    E-Print Network [OSTI]

    Hillesheim, J. C.

    A novel multichannel, tunable Doppler backscattering (DBS)/reflectometry system has recently been developed and applied to a variety of DIII-D plasmas. Either DBS or reflectometry can be easily configured for use in a wide ...

  13. Development of refined MCNPX-PARET multi-channel model for transient analysis in research reactors

    SciTech Connect (OSTI)

    Kalcheva, S.; Koonen, E. [SCK-CEN, BR2 Reactor Dept., Boeretang 200, 2400 Mol (Belgium); Olson, A. P. [RERTR Program, Nuclear Engineering Div., Argonne National Laboratory, Cass Avenue, Argonne, IL 60439 (United States)

    2012-07-01T23:59:59.000Z

    Reactivity insertion transients are often analyzed (RELAP, PARET) using a two-channel model, representing the hot assembly with specified power distribution and an average assembly representing the remainder of the core. For the analysis of protected by the reactor safety system transients and zero reactivity feedback coefficients this approximation proves to give adequate results. However, a more refined multi-channel model representing the various assemblies, coupled through the reactivity feedback effects to the whole reactor core is needed for the analysis of unprotected transients with excluded over power and period trips. In the present paper a detailed multi-channel PARET model has been developed which describes the reactor core in different clusters representing typical BR2 fuel assemblies. The distribution of power and reactivity feedback in each cluster of the reactor core is obtained from a best-estimate MCNPX calculation using the whole core geometry model of the BR2 reactor. The sensitivity of the reactor response to power, temperature and energy distributions is studied for protected and unprotected reactivity insertion transients, with zero and non-zero reactivity feedback coefficients. The detailed multi-channel model is compared vs. simplified fewer-channel models. The sensitivities of transient characteristics derived from the different models are tested on a few reactivity insertion transients with reactivity feedback from coolant temperature and density change. (authors)

  14. Multi-channel optical pyrometer for sub-nanosecond temperature measurements at NDCX-I/II

    SciTech Connect (OSTI)

    Ni, P.A.; Bieniosek, F.M.; Waldron, W.L.

    2011-04-13T23:59:59.000Z

    We present a detailed technical description of a fast multi-channel pyrometer designed for warm-dense-matter (WDM) experiments with intense heavy ion beams at the neutralized-drift-compression-experiment linear accelerator (NDCX-I/II) at Lawrence Berkeley National Laboratory (LBNL). The unique features of the described instrument are its sub-nanosecond temporal resolution (100 ps rise-time) and a broad range, 1,500 K - 12,000 K of measurable brightness temperatures in the visible and near-infrared regions of the spectrum. The working scheme, calibration procedure, experimental data obtained with the pyrometer and future applications are presented.

  15. Effects, determination, and correction of count rate nonlinearity in multi-channel analog electron detectors

    SciTech Connect (OSTI)

    Reber, T. J.; Plumb, N. C.; Waugh, J. A.; Dessau, D. S. [Department of Physics, University of Colorado, Boulder, Colorado 80309-0390 (United States)] [Department of Physics, University of Colorado, Boulder, Colorado 80309-0390 (United States)

    2014-04-15T23:59:59.000Z

    Detector counting rate nonlinearity, though a known problem, is commonly ignored in the analysis of angle resolved photoemission spectroscopy where modern multichannel electron detection schemes using analog intensity scales are used. We focus on a nearly ubiquitous “inverse saturation” nonlinearity that makes the spectra falsely sharp and beautiful. These artificially enhanced spectra limit accurate quantitative analysis of the data, leading to mistaken spectral weights, Fermi energies, and peak widths. We present a method to rapidly detect and correct for this nonlinearity. This algorithm could be applicable for a wide range of nonlinear systems, beyond photoemission spectroscopy.

  16. Distributed multichannel speech enhancement with minimum mean-square error short-time spectral amplitude, log-spectral

    E-Print Network [OSTI]

    Johnson, Michael T.

    Distributed multichannel speech enhancement with minimum mean-square error short-time spectral Keywords: Acoustic arrays Speech enhancement Amplitude estimation Phase estimation Parameter estimation a b on the development and implementation of speech enhancement algorithms. Whereas the current state-of-the-art methods

  17. Constrained Parameterization of the Multichannel Analysis of Surface Waves Approach with Application at Yuma Proving Ground, Arizona

    E-Print Network [OSTI]

    Schwenk, Jacob Tyler

    2013-08-31T23:59:59.000Z

    used to study Vs. The multichannel analysis of surface waves (MASW) is used for Rayleigh-wave Vs estimations (Miller et al., 1999a). MASW employs a linear line of low frequency (e.g., Tyler Schwenk B.S., University of Kansas, 2009 Submitted to the graduate degree program...

  18. 3-D multichannel seismic reflection study of variable-flux hydrocarbon seeps, continental slope, northern Gulf of Mexico

    E-Print Network [OSTI]

    Thomas, Ryan Douglas

    2004-11-15T23:59:59.000Z

    3D multi-channel seismic (MCS) data augmented with side-scan sonar (Garden Banks site) to characterize hydrocarbon seep activity and develop an understanding of the processes that led to their formation. Side-scan sonar data provided high resolution...

  19. Two-particle multichannel systems in a finite volume with arbitrary spin

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Briceno, Raul A. [JLAB

    2014-04-01T23:59:59.000Z

    The quantization condition for two-particle systems with arbitrary number of two-body open coupled channels, spin and masses in a finite cubic volume with either periodic or twisted boundary conditions is presented. The condition presented is in agreement with all previous studies of two-body systems in a finite volume. The result is relativistic, holds for all momenta below the three- and four-particle thresholds, and is exact up to exponential volume corrections that are governed by L/r, where L is the spatial extent of the volume and r is the range of the interactions between the particles. For hadronic systems the range of the interaction is set by the inverse of the pion mass, m?, and as a result the formalism presented is suitable for m?L>>1. Implications of the formalism for the studies of multichannel baryon-baryon systems are discussed.

  20. Device for modular input high-speed multi-channel digitizing of electrical data

    DOE Patents [OSTI]

    VanDeusen, Alan L. (Lee's Summit, MO); Crist, Charles E. (Waxahachie, TX)

    1995-09-26T23:59:59.000Z

    A multi-channel high-speed digitizer module converts a plurality of analog signals to digital signals (digitizing) and stores the signals in a memory device. The analog input channels are digitized simultaneously at high speed with a relatively large number of on-board memory data points per channel. The module provides an automated calibration based upon a single voltage reference source. Low signal noise at such a high density and sample rate is accomplished by ensuring the A/D converters are clocked at the same point in the noise cycle each time so that synchronous noise sampling occurs. This sampling process, in conjunction with an automated calibration, yields signal noise levels well below the noise level present on the analog reference voltages.

  1. Device for modular input high-speed multi-channel digitizing of electrical data

    DOE Patents [OSTI]

    VanDeusen, A.L.; Crist, C.E.

    1995-09-26T23:59:59.000Z

    A multi-channel high-speed digitizer module converts a plurality of analog signals to digital signals (digitizing) and stores the signals in a memory device. The analog input channels are digitized simultaneously at high speed with a relatively large number of on-board memory data points per channel. The module provides an automated calibration based upon a single voltage reference source. Low signal noise at such a high density and sample rate is accomplished by ensuring the A/D converters are clocked at the same point in the noise cycle each time so that synchronous noise sampling occurs. This sampling process, in conjunction with an automated calibration, yields signal noise levels well below the noise level present on the analog reference voltages. 1 fig.

  2. Optical multichannel analyzer-based high-resolution, multipoint spectroscopic apparatus

    SciTech Connect (OSTI)

    Antoniades, J.A.; Peyser, T.

    1987-02-01T23:59:59.000Z

    A high-wavelength resolution (..delta..lambdaless than or equal to0.02 A) spectroscopic apparatus has been developed and applied to the measurements of spectral line profiles emitted by thermonuclear plasmas yielding important plasma parameters, such as ion temperature and fluid velocity. The experimental apparatus consists of a spectrometer, an optical multichannel analyzer (OMA), and a lens. It allows precise wavelength measurements (..delta..lambda/sub error/less than or equal to0.02 A) when a computer and a ThI electrodeless discharge lamp (EDL) are used to calibrate the instrument. The apparatus yields single-shot space and time-resolved spectra for radiation in the 2000--8000-A range.

  3. Two-particle multichannel systems in a finite volume with arbitrary spin

    SciTech Connect (OSTI)

    Briceno, Raul A. [JLAB

    2014-04-01T23:59:59.000Z

    The quantization condition for two-particle systems with arbitrary number of two-body open coupled channels, spin and masses in a finite cubic volume with either periodic or twisted boundary conditions is presented. The condition presented is in agreement with all previous studies of two-body systems in a finite volume. The result is relativistic, holds for all momenta below the three- and four-particle thresholds, and is exact up to exponential volume corrections that are governed by L/r, where L is the spatial extent of the volume and r is the range of the interactions between the particles. For hadronic systems the range of the interaction is set by the inverse of the pion mass, m?, and as a result the formalism presented is suitable for m?L>>1. Implications of the formalism for the studies of multichannel baryon-baryon systems are discussed.

  4. Non-cross talk multi-channel photomultiplier using guided electron multipliers

    DOE Patents [OSTI]

    Gomez, J.; Majewski, S.; Weisenberger, A.G.

    1995-09-26T23:59:59.000Z

    An improved multi-channel electron multiplier is provided that exhibits zero cross-talk and high rate operation. Resistive material input and output masks are employed to control divergence of electrons. Electron multiplication takes place in closed channels. Several embodiments are provided for these channels including a continuous resistive emissive multiplier and a discrete resistive multiplier with discrete dynode chains interspaced with resistive layers-masks. Both basic embodiments provide high gain multiplication of electrons without accumulating surface charges while containing electrons to their proper channels to eliminate cross-talk. The invention can be for example applied to improve the performance of ion mass spectrometers, positron emission tomography devices, in DNA sequencing and other beta radiography applications and in many applications in particle physics. 28 figs.

  5. Non cross talk multi-channel photomultiplier using guided electron multipliers

    DOE Patents [OSTI]

    Gomez, Javier (Newport News, VA); Majewski, Stanislaw (Grafton, VA); Weisenberger, Andrew G. (Grafton, VA)

    1995-01-01T23:59:59.000Z

    An improved multi-channel electron multiplier is provided that exhibits zero cross-talk and high rate operation. Resistive material input and output masks are employed to control divergence of electrons. Electron multiplication takes place in closed channels. Several embodiments are provided for these channels including a continuous resistive emissive multiplier and a discrete resistive multiplier with discrete dynode chains interspaced with resistive layers-masks. Both basic embodiments provide high gain multiplication of electrons without accumulating surface charges while containing electrons to their proper channels to eliminate cross-talk. The invention can be for example applied to improve the performance of ion mass spectrometers, positron emission tomography devices, in DNA sequencing and other beta radiography applications and in many applications in particle physics.

  6. Multichannel microwave interferometer with an antenna switching system for electron density measurement in a laboratory plasma experiment

    SciTech Connect (OSTI)

    Kawamori, Eiichirou; Lin, Yu-Hsiang [Institute of Space and Plasma Sciences, National Cheng Kung University, Tainan 70101, Taiwan (China)] [Institute of Space and Plasma Sciences, National Cheng Kung University, Tainan 70101, Taiwan (China); Mase, Atsushi [Art, Science and Technology Center for Cooperative Research, Kyushu University, Kasuga 816-8580 (Japan)] [Art, Science and Technology Center for Cooperative Research, Kyushu University, Kasuga 816-8580 (Japan); Nishida, Yasushi; Cheng, C. Z. [Institute of Space and Plasma Sciences, National Cheng Kung University, Tainan 70101, Taiwan (China) [Institute of Space and Plasma Sciences, National Cheng Kung University, Tainan 70101, Taiwan (China); Plasma and Space Science Center, National Cheng Kung University, Tainan 70101, Taiwan (China)

    2014-02-15T23:59:59.000Z

    This study presents a simple and powerful technique for multichannel measurements of the density profile in laboratory plasmas by microwave interferometry. This technique uses electromechanical microwave switches to temporally switch the connection between multiple receiver antennas and one phase-detection circuit. Using this method, the phase information detected at different positions is rearranged into a time series that can be acquired from a minimum number of data acquisition channels (e.g., two channels in the case of quadrature detection). Our successfully developed multichannel microwave interferometer that uses the antenna switching method was applied to measure the radial electron density profiles in a magnetized plasma experiment. The advantage of the proposed method is its compactness and scalability to multidimensional measurement systems at low cost.

  7. Mk12A/W78 ground test project (u)

    SciTech Connect (OSTI)

    Stokes, Kyle R [Los Alamos National Laboratory

    2010-12-01T23:59:59.000Z

    The slides present the scope, objectives and status of the Mk12A1W78 Ground Test Project for the purpose of updating the ICBM Project Officers Group. In addition, project constraints and risks are discussed.

  8. Improvement of multichannel seismic data through application of the median concept

    SciTech Connect (OSTI)

    Naess, O.E.; Bruland, L.

    1989-04-01T23:59:59.000Z

    Different types of median-based methods can be used to improve multichannel seismic data, particularly at the stacking stage in processing. Different applications of the median concept are described and discussed. The most direct application is the Simple Median Stack (SMS), i.e. to use as output the median value of the input amplitudes at each reflection time. By the Alpha-Trimmed Mean (ATM) method it is possible to exclude and optional amount of the input amplitudes that differ most from the median value. A more novel use of the median concept is the Weighted Median Stack (WMS). This method is based on a long-gapped median filter. The implicit weighting, which is purely statistical in nature, is due to the edge effects that occur when the gapped filter is applied. By shifting the traces around before filtering, the maximum weight may be given to, for example, the far-offset traces. The fourth method is the Iterative Median Stack (IMS). This method, which also includes a strong element of weighting, consists of a repeated use of a gapped median filter combined with a gradual shortening of the filter after each pass. Examples show how the seismic data can benefit from the application of these methods.

  9. Resolution of the multichannel anomaly in the extraction of S-matrix resonance-pole parameters

    SciTech Connect (OSTI)

    Ceci, Sasa [Rudjer Boskovic Institute, Bijenicka cesta 54, P.O. Box 180, 10002 Zagreb (Croatia); Department of Physics and Astronomy, University of Georgia, Athens, GA 30602 (United States); Stahov, Jugoslav [Abilene Christian University, ACU Station Box 27963, Abilene, TX 79699 (United States); University of Tuzla, Faculty of Science, Univerzitetska 4, 35000 Tuzla (Bosnia and Herzegowina); Svarc, Alfred; Zauner, Branimir [Rudjer Boskovic Institute, Bijenicka cesta 54, P.O. Box 180, 10002 Zagreb (Croatia); Watson, Shon [Abilene Christian University, ACU Station Box 27963, Abilene, TX 79699 (United States)

    2008-06-01T23:59:59.000Z

    Within the framework of a mathematically well-defined coupled-channel T-matrix model we have improved the existing multichannel pole-extraction procedure based on the numerical analytic continuation of the channel propagator, and for the first time we present the full set of pole parameters for already published amplitudes. Standard single-channel pole-extraction method (speed plot) was then applied to those amplitudes and resulting sets of T-matrix poles were inspected. The anomaly has been established that in some partial waves the pole values extracted using the standard single-channel methods differ not only from the values obtained using the analytic continuation method, but also change from one reaction to another. Inspired by this peculiarity, we have developed a new single-channel pole-extraction method based solely on the assumption of the partial wave analyticity. Since the speed plot turns out to be the lowest order term of the proposed method, the anomaly is understood and resolved.

  10. Multichannel, time-resolved picosecond laser ultrasound imaging and spectroscopy with custom complementary metal-oxide-semiconductor detector

    SciTech Connect (OSTI)

    Smith, Richard J.; Light, Roger A.; Johnston, Nicholas S.; Pitter, Mark C.; Somekh, Mike G. [Institute of Biophysics, Imaging and Optical Science, University of Nottingham, Nottinghamshire NG7 2RD (United Kingdom); Sharples, Steve D. [Applied Optics Group, Electrical Systems and Optics Research Division, University of Nottingham, Nottinghamshire NG7 2RD (United Kingdom)

    2010-02-15T23:59:59.000Z

    This paper presents a multichannel, time-resolved picosecond laser ultrasound system that uses a custom complementary metal-oxide-semiconductor linear array detector. This novel sensor allows parallel phase-sensitive detection of very low contrast modulated signals with performance in each channel comparable to that of a discrete photodiode and a lock-in amplifier. Application of the instrument is demonstrated by parallelizing spatial measurements to produce two-dimensional thickness maps on a layered sample, and spectroscopic parallelization is demonstrated by presenting the measured Brillouin oscillations from a gallium arsenide wafer. This paper demonstrates the significant advantages of our approach to pump probe systems, especially picosecond ultrasonics.

  11. 1266 IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 38, NO. 7, JULY 2003 A Multichannel Pipeline Analog-to-Digital Converter

    E-Print Network [OSTI]

    Khuri-Yakub, Butrus T. "Pierre"

    1266 IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 38, NO. 7, JULY 2003 A Multichannel Pipeline Analog-channel 10-bit pipeline analog-to-digital con- verter, designed for use in an integrated three-interleaved pipeline paths, each operating at 80 MHz. The two parallel pipelines are subsequently multiplexed

  12. Fundamental studies on initiation and evolution of multi-channel discharges and their application to next generation pulsed power machines.

    SciTech Connect (OSTI)

    Schwarz, Jens; Savage, Mark E.; Lucero, Diego Jose; Jaramillo, Deanna M.; Seals, Kelly Gene; Pitts, Todd; Hautzenroeder, Brenna M.; Laine, Mark Richard; Karelitz, David B.; Porter, John L.

    2014-09-01T23:59:59.000Z

    Future pulsed power systems may rely on linear transformer driver (LTD) technology. The LTD's will be the building blocks for a driver that can deliver higher current than the Z-Machine. The LTD's would require tens of thousands of low inductance ( < 85nH), high voltage (200 kV DC) switches with high reliability and long lifetime ( 10 4 shots). Sandia's Z-Machine employs 36 megavolt class switches that are laser triggered by a single channel discharge. This is feasible for tens of switches but the high inductance and short switch life- time associated with the single channel discharge are undesirable for future machines. Thus the fundamental problem is how to lower inductance and losses while increasing switch life- time and reliability. These goals can be achieved by increasing the number of current-carrying channels. The rail gap switch is ideal for this purpose. Although those switches have been extensively studied during the past decades, each effort has only characterized a particular switch. There is no comprehensive understanding of the underlying physics that would allow predictive capability for arbitrary switch geometry. We have studied rail gap switches via an extensive suite of advanced diagnostics in synergy with theoretical physics and advanced modeling capability. Design and topology of multichannel switches as they relate to discharge dynamics are investigated. This involves electrically and optically triggered rail gaps, as well as discrete multi-site switch concepts.

  13. The Use of a Multichannel Analyzer to Investigate Effects of Experimental Factors on Gross-Counting Gamma and Neutron Detectors

    SciTech Connect (OSTI)

    Volz, Heather M. [Los Alamos National Laboratory; Rennie, John A. [Los Alamos National Laboratory; Lovejoy, Christopher M. [Los Alamos National Laboratory; Martinez, Diana E. R [Los Alamos National Laboratory; Dempsey, Michael A. [Los Alamos National Laboratory; Livesay, Jake [ORNL; Lousteau, Angela [ORNL

    2012-07-12T23:59:59.000Z

    Radiation detection technology is invaluable to many fields of study in identifying nuclear materials. However, many detectors use gross-counting methods that give only a relative count rate. Without a spectrum (information on counts over time vs energy), it can be more difficult to discern if an alarm is false, innocent, or real. In particular, we would like to understand better the effect of experimental factors (i.e., external conditions and equipment parameters) on detector data, with possible implications for false alarms. To more thoroughly characterize detector technology, a multichannel analyzer (MCA) was used to record spectra from neutron (helium-3 tubes) and gamma (photomultiplier tubes) gross-counting detectors. Several factors could affect the signal-to-noise ratio of sources. For example, we examined the effects of neutron detector high voltage setting on the appearance of a californium-252 spectrum, the effect of discriminator values on integrated counts in neutron detection, and the effect of gain changes on the gamma spectra from several sources. Possible implications of ambient temperature of the experiment on the data collected will be discussed. The input impedance of the MCA must be considered to ensure that data are not affected by the measurement itself. Moreover, a calibration on the MCA was performed to verify the conversion of a MCA channel number to a voltage. In summary, the series of source spectra collected on an MCA with a variety of experimental conditions allow us to understand factors that affect data better, and assure us that gross-counting neutron and gamma detectors will have minimal false alarms.

  14. Dosimetric Comparison of 3-Dimensional Planning Techniques Using an Intravaginal Multichannel Balloon Applicator for High-Dose-Rate Gynecologic Brachytherapy

    SciTech Connect (OSTI)

    Park, Sang-June, E-mail: spark@mednet.ucla.edu; Chung, Melody; Demanes, D. Jeffrey; Banerjee, Robyn; Steinberg, Michael; Kamrava, Mitchell

    2013-11-15T23:59:59.000Z

    Purpose: To study the dosimetric differences of various channel combinations of the Capri vaginal applicator. Methods and Materials: The Capri consists of a single central channel (R1), an inner array of 6 channels (R2), and an outer array of 6 channels (R3). Three-dimensional plans were simulated for 6 channel arrangements (R1, R2, R12, R13, R23, and R123). Treatment plans were optimized to the applicator surface or 5-mm depth while minimizing dose to organs at risk (OARs: bladder, rectum, sigmoid, and urethra). The clinical target volume (CTV) was defined as a 5-mm circumferential shell extending 4 cm in length around the applicator. Clinical target volume coverage (D{sub mean}, D{sub 90}, V{sub 100}, and V{sub 150}) and OAR doses (D{sub 0.1} {sub cm{sup 3}}, D{sub 1} {sub cm{sup 3}}, D{sub 2} {sub cm{sup 3}}, and D{sub mean}) were compared. A comparison between the Capri (R123) and a conventional single-channel applicator was also done. Statistical significance (P value <.05) was evaluated with a 2-tailed t test. Results: When prescribing to 5-mm depth, CTV coverage using all 13 channels (R123) versus a single channel (R1) was similar; however, when prescribing to the surface there were differences (P<.0001) in all CTV metrics except for the V{sub 150}. The R1 plans had higher doses to all OARs compared with R123 plans (P<.007). Doses to OARs were not significantly different between R23 and R123 plans (P=.05-.95), and CTV coverage differences were on the order of 1%. Capri R123 plans provided slightly lower CTV D{sub 90} and D{sub mean} but equivalent OAR doses with smaller standard deviations compared with conventional cylinder plans for both prescriptions. Conclusions: The Capri multichannel applicator provides equivalent target coverage at 5-mm depth, with significantly reduced dose to OARs relative to using a single channel. Optimal plans can be achieved using R12 (lowest V{sub 150}) or R123 or R23 (lowest OAR doses)

  15. Multichannel response analysis on 2D projection views for detection of clustered microcalcifications in digital breast tomosynthesis

    SciTech Connect (OSTI)

    Wei, Jun, E-mail: jvwei@umich.edu; Chan, Heang-Ping; Hadjiiski, Lubomir M.; Helvie, Mark A.; Lu, Yao; Zhou, Chuan; Samala, Ravi [Department of Radiology, University of Michigan, Ann Arbor, Michigan 48109-5842 (United States)] [Department of Radiology, University of Michigan, Ann Arbor, Michigan 48109-5842 (United States)

    2014-04-15T23:59:59.000Z

    Purpose: To investigate the feasibility of a new two-dimensional (2D) multichannel response (MCR) analysis approach for the detection of clustered microcalcifications (MCs) in digital breast tomosynthesis (DBT). Methods: With IRB approval and informed consent, a data set of two-view DBTs from 42 breasts containing biopsy-proven MC clusters was collected in this study. The authors developed a 2D approach for MC detection using projection view (PV) images rather than the reconstructed three-dimensional (3D) DBT volume. Signal-to-noise ratio (SNR) enhancement processing was first applied to each PV to enhance the potential MCs. The locations of MC candidates were then identified with iterative thresholding. The individual MCs were decomposed with Hermite–Gaussian (HG) and Laguerre–Gaussian (LG) basis functions and the channelized Hotelling model was trained to produce the MCRs for each MC on the 2D images. The MCRs from the PVs were fused in 3D by a coincidence counting method that backprojects the MC candidates on the PVs and traces the coincidence of their ray paths in 3D. The 3D MCR was used to differentiate the true MCs from false positives (FPs). Finally a dynamic clustering method was used to identify the potential MC clusters in the DBT volume based on the fact that true MCs of clinical significance appear in clusters. Using two-fold cross validation, the performance of the 3D MCR for classification of true and false MCs was estimated by the area under the receiver operating characteristic (ROC) curve and the overall performance of the MCR approach for detection of clustered MCs was assessed by free response receiver operating characteristic (FROC) analysis. Results: When the HG basis function was used for MCR analysis, the detection of MC cluster achieved case-based test sensitivities of 80% and 90% at the average FP rates of 0.65 and 1.55 FPs per DBT volume, respectively. With LG basis function, the average FP rates were 0.62 and 1.57 per DBT volume at the same sensitivity levels. The difference in the two sets of basis functions for detection of MCs did not show statistical significance. Conclusions: The authors' experimental results indicate that the MCR approach is promising for the detection of MCs on PV images. The HG or LG basis functions are both effective in characterizing the signal response of MCs using the channelized Hotelling model. The coincidence counting method for fusion of the 2D MCR in 3D is an important step for FP reduction. Further study is underway to improve the MCR approach for microcalcification detection in DBT.

  16. Multichannel homodyne receiver

    DOE Patents [OSTI]

    Landt, Jeremy A. (Los Alamos, NM)

    1982-01-01T23:59:59.000Z

    A homodyne radar transmitter/receiver device which produces a single combined output which contains modulated backscatter information for all phase conditions of both modulated and unmodulated backscatter signals. The device utilizes taps along coaxial transmission lines, strip transmission line, and waveguides which are spaced by 1/8 wavelength or 1/6 wavelength, etc. This greatly reduces costs by eliminating separate transmission and reception antennas and an expensive arrangement of power splitters and mixers utilized in the prior art.

  17. Multichannel homodyne receiver

    DOE Patents [OSTI]

    Landt, J.A.

    1981-01-19T23:59:59.000Z

    A homodyne radar transmitter/receiver device which produces a single combined output which contains modulated backscatter information for all phase conditions of both modulated and unmodulated backscatter signals is described. The device utilizes taps along coaxial transmission lines, strip transmission line, and waveguides which are spaced by 1/8 wavelength or 1/6 wavelength, etc. This greatly reduces costs by eliminating separate transmission and reception antennas and an expensive arrangement of power splitters and mixers utilized in the prior art.

  18. Masked multichannel analyzer

    DOE Patents [OSTI]

    Winiecki, Alan L. (Downers Grove, IL); Kroop, David C. (Columbia, MD); McGee, Marilyn K. (Colorado Springs, CO); Lenkszus, Frank R. (Woodridge, IL)

    1986-01-01T23:59:59.000Z

    An analytical instrument and particularly a time-of-flight-mass spectrometer for processing a large number of analog signals irregularly spaced over a spectrum, with programmable masking of portions of the spectrum where signals are unlikely in order to reduce memory requirements and/or with a signal capturing assembly having a plurality of signal capturing devices fewer in number than the analog signals for use in repeated cycles within the data processing time period.

  19. CEWEP -Confederation of European Waste-to-Energy Plants Boulevard Clovis 12A

    E-Print Network [OSTI]

    CEWEP - Confederation of European Waste-to- Energy Plants Boulevard Clovis 12A B-1000 Brussels Tel energy from waste Waste-to-Energy A cost effective and reliable sustainable energy source Waste for additional renewable energy which can be exploited from municipal solid waste (MSW) and comparable waste

  20. CEWEP -Confederation of European Waste-to-Energy Plants Boulevard Clovis 12A

    E-Print Network [OSTI]

    Columbia University

    CEWEP - Confederation of European Waste-to- Energy Plants Boulevard Clovis 12A B-1000 Brussels Tel. : +32 (0)2 770 63 11 Fax : +32 (0)2 770 68 14 info@cewep.eu www.cewep.eu 1 Waste-to-Energy: towards recovery CEWEP welcomes that `energy recovery' should cover the use of waste for generating energy through

  1. Multi-channel infrared thermometer

    DOE Patents [OSTI]

    Ulrickson, Michael A. (East Windsor, NJ)

    1986-01-01T23:59:59.000Z

    A device for measuring the two-dimensional temperature profile of a surface comprises imaging optics for generating an image of the light radiating from the surface; an infrared detector array having a plurality of detectors; and a light pipe array positioned between the imaging optics and the detector array for sampling, transmitting, and distributing the image over the detector surfaces. The light pipe array includes one light pipe for each detector in the detector array.

  2. A Customer Service Management Architecture for the Internet page 1 of 12 A Customer Service Management Architecture

    E-Print Network [OSTI]

    Pras, Aiko

    (CSMA), based on work done earlier in [1]. Customer Service Management (CSM) transfers a part- clusions and possible directions for future work. 2 Customer Service Management Figure 1 shows an overviewA Customer Service Management Architecture for the Internet page 1 of 12 A Customer Service

  3. Doping-induced metal-insulator transition in aluminum-doped 4H silicon P. Achatz,1,2,a

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Doping-induced metal-insulator transition in aluminum-doped 4H silicon carbide P. Achatz,1,2,a J an experimental determination of the doping-induced metal-insulator transition in aluminum-doped 4H silicon concentration lying between 6.4 and 8.7 1020 cm-3 for the metal-insulator transition in these epilayers grown

  4. EFTEM and EELS analysis of the oxide layer formed on HCM12A exposed to SCW Jeremy Bischoff

    E-Print Network [OSTI]

    Motta, Arthur T.

    and stress corrosion cracking, ferritic­martensitic steels, such as HCM12A, are candidate materials forms a dual layer structure at 500 °C with Fe3O4 in the outer layer and spinel (Fe,Cr)3O4 in the inner]. The study of both the oxygen and the iron edges can generate information on the oxide phase being analyzed

  5. Determination of the binding energies of the np Rydberg states of H{sub 2}, HD, and D{sub 2} from high-resolution spectroscopic data by multichannel quantum-defect theory

    SciTech Connect (OSTI)

    Sprecher, Daniel; Merkt, Frédéric, E-mail: frederic.merkt@phys.chem.ethz.ch [Laboratorium für Physikalische Chemie, ETH-Zürich, 8093 Zürich (Switzerland)] [Laboratorium für Physikalische Chemie, ETH-Zürich, 8093 Zürich (Switzerland); Jungen, Christian [Laboratoire Aimé Cotton du CNRS, Université de Paris-Sud, 91405 Orsay (France)] [Laboratoire Aimé Cotton du CNRS, Université de Paris-Sud, 91405 Orsay (France)

    2014-03-14T23:59:59.000Z

    Multichannel quantum-defect theory (MQDT) is used to calculate the electron binding energies of np Rydberg states of H{sub 2}, HD, and D{sub 2} around n = 60 at an accuracy of better than 0.5?MHz. The theory includes the effects of rovibronic channel interactions and the hyperfine structure, and has been extended to the calculation of the asymmetric hyperfine structure of Rydberg states of a heteronuclear diatomic molecule (HD). Starting values for the eigenquantum-defect parameters of MQDT were extracted from ab initio potential-energy functions for the low-lying p Rydberg states of molecular hydrogen and subsequently refined in a global weighted fit to available experimental data on the singlet and triplet Rydberg states of H{sub 2} and D{sub 2}. The electron binding energies of high-np Rydberg states derived in this work represent important quantities for future determinations of the adiabatic ionization energies of H{sub 2}, HD, and D{sub 2} at sub-MHz accuracy.

  6. Hands-on Nanosciences J. Chevrier 1,2, A. Luciani 2, F. Marchi1,2, J.L. Florens3

    E-Print Network [OSTI]

    Boyer, Edmond

    Hands-on Nanosciences J. Chevrier 1,2, A. Luciani 2, F. Marchi1,2, J.L. Florens3 1: Institut Néel specific concepts in nanosciences. A first and important observation after these experiences with a large

  7. 12A.4 VERTICAL VELOCITY AND BUOYANCY CHARACTERISTICS OF ECHO PLUMES DETECTED BY AN AIRBORNE MM-WAVE RADAR IN THE CONVECTIVE

    E-Print Network [OSTI]

    Geerts, Bart

    12A.4 VERTICAL VELOCITY AND BUOYANCY CHARACTERISTICS OF ECHO PLUMES DETECTED BY AN AIRBORNE MM-WAVE, is the availability of in situ thermodynamic and kinematic observations, and the direct observation of horizontal, as part of IHOP_02 (The International Water Vapor Project, Weckwerth et al 2003). The key radar

  8. Digitally Assisted Multi-Channel Receivers

    E-Print Network [OSTI]

    Pentakota, Krishna Anand Santosh Spikanth

    2011-10-21T23:59:59.000Z

    -channel charge sampling receivers with sinc filter banks together with a complete system calibration and synchronization algorithm for the receiver. A unified model has been defined for the receiver containing all first order mismatches, offsets... and imperfections and a technique based on least mean squares algorithm is employed to track these errors. The performance of this technique under noisy channel conditions has been verified. The sinc filter bank is compared with the conventional analog filter...

  9. A multichannel, synchronous laser signal processing system

    E-Print Network [OSTI]

    Hulse, William Colbern

    2012-06-07T23:59:59.000Z

    . Janice Carter and Mrs. Connie Schilhab, This research was funded by the United States Coast Guard under contract DOT- CG-34017-A. To Roselyn TABLE OF CONTENTS ~hh h ABSTRACT ACKNOWLEDGEMENTS DEDICATION TABLE OF CONTENTS. LIST OF FIGURES. LIST... Pe Q Q pe Qe @Qe Qe Qe Qe p? pe p, Qe 100 200 300 400 Turbidity (FTU) 500 600 700 Figure 1-1. Lidar Depolarization Ratio as a Function of Turbidity Chopper Linear Pol Laser Receiving Optics Telephoto Lense Pho odiod s Figure I...

  10. Multi-channel medical imaging system

    DOE Patents [OSTI]

    Frangioni, John V

    2013-12-31T23:59:59.000Z

    A medical imaging system provides simultaneous rendering of visible light and fluorescent images. The system may employ dyes in a small-molecule form that remain in the subject's blood stream for several minutes, allowing real-time imaging of the subject's circulatory system superimposed upon a conventional, visible light image of the subject. The system may provide an excitation light source to excite the fluorescent substance and a visible light source for general illumination within the same optical guide used to capture images. The system may be configured for use in open surgical procedures by providing an operating area that is closed to ambient light. The systems described herein provide two or more diagnostic imaging channels for capture of multiple, concurrent diagnostic images and may be used where a visible light image may be usefully supplemented by two or more images that are independently marked for functional interest.

  11. Multichannel chiral approach for kaonic hydrogen

    E-Print Network [OSTI]

    A. Cieply; J. Smejkal

    2007-10-22T23:59:59.000Z

    We present an exact solution to the $K^{-}$-proton bound state problem formulated in the momentum space. The 1s level characteristics of the kaonic hydrogen are described together with the available low energy $\\bar{K}N$ data.

  12. Low power, scalable multichannel high voltage controller

    DOE Patents [OSTI]

    Stamps, James Frederick (Livermore, CA); Crocker, Robert Ward (Fremont, CA); Yee, Daniel Dadwa (Dublin, CA); Dils, David Wright (Fort Worth, TX)

    2006-03-14T23:59:59.000Z

    A low voltage control circuit is provided for individually controlling high voltage power provided over bus lines to a multitude of interconnected loads. An example of a load is a drive for capillary channels in a microfluidic system. Control is distributed from a central high voltage circuit, rather than using a number of large expensive central high voltage circuits to enable reducing circuit size and cost. Voltage is distributed to each individual load and controlled using a number of high voltage controller channel switches connected to high voltage bus lines. The channel switches each include complementary pull up and pull down photo isolator relays with photo isolator switching controlled from the central high voltage circuit to provide a desired bus line voltage. Switching of the photo isolator relays is further controlled in each channel switch using feedback from a resistor divider circuit to maintain the bus voltage swing within desired limits. Current sensing is provided using a switched resistive load in each channel switch, with switching of the resistive loads controlled from the central high voltage circuit.

  13. Low power, scalable multichannel high voltage controller

    DOE Patents [OSTI]

    Stamps, James Frederick (Livermore, CA); Crocker, Robert Ward (Fremont, CA); Yee, Daniel Dadwa (Dublin, CA); Dils, David Wright (Fort Worth, TX)

    2008-03-25T23:59:59.000Z

    A low voltage control circuit is provided for individually controlling high voltage power provided over bus lines to a multitude of interconnected loads. An example of a load is a drive for capillary channels in a microfluidic system. Control is distributed from a central high voltage circuit, rather than using a number of large expensive central high voltage circuits to enable reducing circuit size and cost. Voltage is distributed to each individual load and controlled using a number of high voltage controller channel switches connected to high voltage bus lines. The channel switches each include complementary pull up and pull down photo isolator relays with photo isolator switching controlled from the central high voltage circuit to provide a desired bus line voltage. Switching of the photo isolator relays is further controlled in each channel switch using feedback from a resistor divider circuit to maintain the bus voltage swing within desired limits. Current sensing is provided using a switched resistive load in each channel switch, with switching of the resistive loads controlled from the central high voltage circuit.

  14. Data:420fb714-7054-49c9-8b1f-f07dac56b12a | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of48d9ff47edf3a87dcc95b No revision has beend26-1acc36863a1df4498 No9272891a285321e6989942 No70894d7 Nodac56b12a

  15. Data:D5afa075-e887-4728-97a1-2a2bc811845d | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Pagec-01b596aa1744 No revision has been approved97069579d6 Nob2d2-b9d0456a138a No revisionafa075-e887-4728-97a1-2a2bc811845d No

  16. Data:E72ee42e-a63e-4795-9893-3ef12a88bed0 | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Pagec-01b596aa1744b55997c1cc No revision has beenace4-3e58210a501f No revision has3-1f6ec21a066a No revisionef12a88bed0 No

  17. c12a.xls

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30NaturalThousandExtensions473.6 W 54,849.0 52,418.4520.7Buildings1,488 2,794

  18. Parity meter for charge qubits: An efficient quantum entangler B. Trauzettel,1,2 A. N. Jordan,3,4 C. W. J. Beenakker,1 and M. Bttiker3

    E-Print Network [OSTI]

    Parity meter for charge qubits: An efficient quantum entangler B. Trauzettel,1,2 A. N. Jordan,3,4 C parity meter based on two double quantum dots alongside a quantum point contact. Such a device off the parity meter. Two applications of the parity meter are discussed: the measurement of Bell

  19. Chemical Rearrangement under Hydrothermal Conditions: Formation of Polymeric Chains (CuX)2(dpiz) and (CuX)3(dpiz) (X ) Cl, Br; dpiz ) Dipyrido[1,2-a:2,3-d]imidazole) and Crystal Structures of

    E-Print Network [OSTI]

    Li, Jing

    rearrangement during the hydrothermal self- assembly process in forming copper dipyrido[1,2-a:2,3-d]imi- dazoleChemical Rearrangement under Hydrothermal Conditions: Formation of Polymeric Chains (CuX)2(dpiz the hydrothermal method7 has been widely applied in the synthesis and crystal growth of many inorganic compounds

  20. Problems #3, Math 204, Dr. M. Bohner. Sep 10, 2003. Due Sep 15, 11 am. 12. A tank has ten gallons of water in which two pounds of salt has been dissolved. Brine with

    E-Print Network [OSTI]

    Bohner, Martin

    Problems #3, Math 204, Dr. M. Bohner. Sep 10, 2003. Due Sep 15, 11 am. 12. A tank has ten gallons through the supplementary homework problems for Chapters 1­2: 1, 3 of Section 1.1; 1 of Section 1.2; 1-8, 14, 15, 17, 19, 21, 25, 26 of Section 1.3; 1, 3, 4, 13­17, 21, 26, 29 of Section 2.1; 1, 4­8, 9, 11

  1. A compact, multichannel, and low noise arbitrary waveform generator

    SciTech Connect (OSTI)

    Govorkov, S. [Sema Systems, 302-5553 16th ave., Delta, British Columbia V4M 2H7 (Canada)] [Sema Systems, 302-5553 16th ave., Delta, British Columbia V4M 2H7 (Canada); Ivanov, B. I. [Leibniz-Institute of Photonic Technology, PO Box 100239, D-07702 Jena (Germany) [Leibniz-Institute of Photonic Technology, PO Box 100239, D-07702 Jena (Germany); Novosibirsk State Technical University, K.Marx-Ave. 20, Novosibirsk 630092 (Russian Federation); Il'ichev, E.; Meyer, H.-G. [Leibniz-Institute of Photonic Technology, PO Box 100239, D-07702 Jena (Germany)] [Leibniz-Institute of Photonic Technology, PO Box 100239, D-07702 Jena (Germany)

    2014-05-15T23:59:59.000Z

    A new type of high functionality, fast, compact, and easy programmable arbitrary waveform generator for low noise physical measurements is presented. The generator provides 7 fast differential waveform channels with a maximum bandwidth up to 200 MHz frequency. There are 6 fast pulse generators on the generator board with 78 ps time resolution in both duration and delay, 3 of them with amplitude control. The arbitrary waveform generator is additionally equipped with two auxiliary slow 16 bit analog-to-digital converters and four 16 bit digital-to-analog converters for low frequency applications. Electromagnetic shields are introduced to the power supply, digital, and analog compartments and with a proper filter design perform more than 110 dB digital noise isolation to the output signals. All the output channels of the board have 50 ? SubMiniature version A termination. The generator board is suitable for use as a part of a high sensitive physical equipment, e.g., fast read out and manipulation of nuclear magnetic resonance or superconducting quantum systems and any other application, which requires electromagnetic interference free fast pulse and arbitrary waveform generation.

  2. Method of multi-channel data readout and acquisition

    DOE Patents [OSTI]

    Degtiarenko, Pavel V.; Popov, Vladimir E.

    2010-06-15T23:59:59.000Z

    A method for dealing with the problem of simultaneous continuous readout of large number of data channels from the set of multiple sensors in instances where the use of multiple amplitude-to-digital converters is not practical or causes undesirable extra noise and distortion in the data. The new method uses sensor front-end s and subsequent electronics to transform the analog input signals and encode them into a series of short pulses that can be transmitted to a long distance via a high frequency transmission line without information loss. Upon arrival at a destination data decoder and analyzer device, the series of short pulses can be decoded and transformed back, to obtain, store, and utilize the sensor information with the required accuracy.

  3. Multichannel heterodyning for wideband interferometry, correlation and signal processing

    DOE Patents [OSTI]

    Erskine, David J. (Oakland, CA)

    1999-01-01T23:59:59.000Z

    A method of signal processing a high bandwidth signal by coherently subdividing it into many narrow bandwidth channels which are individually processed at lower frequencies in a parallel manner. Autocorrelation and correlations can be performed using reference frequencies which may drift slowly with time, reducing cost of device. Coordinated adjustment of channel phases alters temporal and spectral behavior of net signal process more precisely than a channel used individually. This is a method of implementing precision long coherent delays, interferometers, and filters for high bandwidth optical or microwave signals using low bandwidth electronics. High bandwidth signals can be recorded, mathematically manipulated, and synthesized.

  4. Multi-channel atomic magnetometer for magnetoencephalography: A configuration study

    E-Print Network [OSTI]

    Romalis, Mike

    emission tomography (PET). Specifically, due to its high temporal resolution, MEG has a unique position are a high rate of liquid helium consumption, fixed sensor configuration, frequent requirement for cryogenic

  5. Distributed Interference Compensation for Multi-channel Wireless Networks

    E-Print Network [OSTI]

    Kuzmanovic, Aleksandar

    to maximize its net benefit (utility minus cost), subject to a total power constraint. We consider two to the unique globally optimal power allocation for a class of concave user utility functions. When the utility power across users and channels to maximize total network utility is This work was supported

  6. Multichannel analog-digital converter in VEKTOR-CAMAC systemsystems

    SciTech Connect (OSTI)

    Borodyanskii, M.E.

    1986-09-01T23:59:59.000Z

    This paper describes a four-channel analog-digital converter (ADC) that is implemented by large-scale integrated circuits. Resdundancy of signal conversion in intermediate cycles ensures a more accurate conversion result from cycle to cycle. The ADC is fully compatible with the Vektor system and, with slight modifications, is CAMAC compatible. The conversion time of the ADC for one channel is 5 used, the output code is 14-bit binary, the maximum integral nonlinearity is not more than 0.05% of the dynamic range of + or -10V, and the size of the random access memeory is 1024 14-bit words.

  7. Wireless Multichannel Integrated Potentiostat for Distributed Neurotransmitter Sensing

    E-Print Network [OSTI]

    Cauwenberghs, Gert

    introduces noise levels of 0.42% and 0.18% on potentiostat current scales of 500pA and 4nA respectively. Real disorders such as Parkinsons disease and epilepsy. Electrochemical sensing of certain electroactive and the ability to perform distributed measurements with this method [1], [2], [3]. Electrochemical measurements

  8. Multi-channel monolith reactors as dynamical systems *, J. Brindleyb

    E-Print Network [OSTI]

    James, Alex

    to other types of reactor e.g. fixed-bed. Most mathematical models of monoliths concen- trate on modelling phenomenology. © 2003 The Combustion Institute. All rights reserved. Keywords: Catalytic combustion; Multi.james@shu.ac.uk (A. James). Combustion and Flame 134 (2003) 193­205 0010-2180/03/$ ­ see front matter © 2003

  9. Multichannel heterodyning for wideband interferometry, correlation and signal processing

    DOE Patents [OSTI]

    Erskine, D.J.

    1999-08-24T23:59:59.000Z

    A method is disclosed of signal processing a high bandwidth signal by coherently subdividing it into many narrow bandwidth channels which are individually processed at lower frequencies in a parallel manner. Autocorrelation and correlations can be performed using reference frequencies which may drift slowly with time, reducing cost of device. Coordinated adjustment of channel phases alters temporal and spectral behavior of net signal process more precisely than a channel used individually. This is a method of implementing precision long coherent delays, interferometers, and filters for high bandwidth optical or microwave signals using low bandwidth electronics. High bandwidth signals can be recorded, mathematically manipulated, and synthesized. 50 figs.

  10. CONTROL OF HAZARDOUS ENERGY 12.A GENERAL

    E-Print Network [OSTI]

    US Army Corps of Engineers

    as all requirements of 1910.147, ANSI Z244.1, and ANSI A10.44. c. When contractor work involving.147, ANSI Z244.1, and ANSI A10.44. When a site is controlled by a contractor and USACE employees

  11. CONTROL OF HAZARDOUS ENERGY 12.A GENERAL

    E-Print Network [OSTI]

    US Army Corps of Engineers

    on or near any system that produces, uses, or stores hazardous energy, a hazardous energy control program by the contractor-managed HECP (e.g., QA's on construction sites, etc.), they shall comply with the contractor and implementation of these activities. Each shall inform the other of their HECPs and Hazardous Energy Control (HEC

  12. Project File LGPF 1.2 (A. Garcia)

    E-Print Network [OSTI]

    J. Gilmore Doe-gjo; M. Plessinger Mactec-ers; Art Kleinrath

    2001-01-01T23:59:59.000Z

    Program for UMTRA Project Title I Disposal Sites. The purpose of the new guidance document is to broaden

  13. trinity-aa-use-case-v1.2a

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched5 Industrial Carbon CaptureFY08 JointProgramApplication ofUUse of 4 . .-:fromT

  14. NEPA Determination: LM-12a-12 | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGY TAXBalanced Scorecard Federal2 to:Diesel Engines |ServicesfromJanuary2,

  15. Multi-channel blind system identification using the Laguerre expansion for characterization of circulatory hemodynamics

    E-Print Network [OSTI]

    McCombie, Devin Barnett, 1972-

    2004-01-01T23:59:59.000Z

    A new tool for real-time characterization of both systemic and local circulatory hemodynamics has been developed. Given two peripheral circulatory waveform measurements this new signal-processing algorithm generates two ...

  16. Suppressing Multi-Channel Ultra-Low-Field MRI Measurement Noise Using Data Consistency and Image

    E-Print Network [OSTI]

    SQUID sensors demonstrate the effectiveness of this data consistency constraint and sparsity prior-mail: fhlin@ntu.edu.tw Introduction MRI has become an indispensible resource in clinical medicine because

  17. High speed, multi-channel, user programmable digital data acquisition system.

    SciTech Connect (OSTI)

    Sabourov, Konstantin [XIA LLC; Hennig, Wolfgang [XIA LLC; Walby, Mark [XIA LLC

    2013-11-18T23:59:59.000Z

    As applications for radiation detection become more demanding, and in turn improvements are made in the technology of radiation detection, there is a need for high speed digital detector readout electronics matching these improvements. Specifically, full control over the on-line processing resources of modern digital electronics is desirable so that researchers can develop custom algorithms for special applications.In the proposed effort, the 500 MHz digital readout electronics previously developed by our company will be redesigned to allow user access to the on-line processing resources. In Phase I, the division of online processing into vendor and user firmware sections has been studied on existing hardware. In Phase II, the hardware will be upgraded to better facilitate the division, and the firmware will be restructured into a robust vendor logic block (providing standard functions such as host I/O, on-board memory I/O, energy computation, MCA spectra, timestamps, waveform capture, run statistics, and triggering and timing) and a user logic block for custom algorithms (with templates and examples for frequently used functions). Investigating several options to divide online processing, it was determined that the most promising approach is to “partition” a single FPGA integrated circuit into a vendor and user section, which is supported in newer devices. The analog front end of the existing electronics proved suitable for most applications, in particular high rate measurements with germanium detectors. The design architecture for new electronics was developed, combining one of the new FPGA device with the analog front end.

  18. System for remote multichannel real-time monitoring of mouse ECG via the Internet

    E-Print Network [OSTI]

    Oefinger, Matthew Blake, 1976-

    2003-01-01T23:59:59.000Z

    A hardware/software system was developed to allow real-time monitoring of multiple physiological signals simultaneously via the Internet. The hardware is specifically designed for measuring ECG signals from mice, while the ...

  19. Multi-channel Doppler backscattering measurements in the C-2 field reversed configuration

    SciTech Connect (OSTI)

    Schmitz, L., E-mail: lschmitz@ucla.edu; Peebles, W. A. [Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095 (United States); Ruskov, E. [Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697 (United States); Deng, B. H.; Gota, H.; Gupta, D.; Tuszewski, M.; Douglass, J.; Binderbauer, M.; Tajima, T. [Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688 (United States)

    2014-11-15T23:59:59.000Z

    A versatile heterodyne Doppler Backscattering (DBS) system is used to measure density fluctuation levels (in the wavenumber range k?{sub s} ? 50), and the toroidal E × B flow velocity in the C-2 Field-Reversed Configuration (FRC). Six tunable frequencies in three waveguide bands (26 GHz ? f ? 90 GHz) are launched using monostatic beam optics, via a quasi-optical beam combiner/polarizer and an adjustable parabolic focusing mirror (inside the vacuum enclosure) achieving Gaussian beam spot sizes of 3–5.5 cm at the X/O-mode cutoff. The DBS system covers plasma densities of 0.8 × 10{sup 13} ? n{sub e} ? 1 × 10{sup 14} cm{sup ?3}, and provides access to the FRC core (up to the field null) and across the FRC separatrix into the scrape-off layer plasma.

  20. High-speed, multi-channel detector readout electronics for fast radiation detectors

    SciTech Connect (OSTI)

    Hennig, Wolfgang

    2012-06-22T23:59:59.000Z

    In this project, we are developing a high speed digital spectrometer that a) captures detector waveforms at rates up to 500 MSPS b) has upgraded event data acquisition with additional data buffers for zero dead time operation c) moves energy calculations to the FPGA to increase spectrometer throughput in fast scintillator applications d) uses a streamlined architecture and high speed data interface for even faster readout to the host PC These features are in addition to the standard functions in our existing spectrometers such as digitization, programmable trigger and energy filters, pileup inspection, data acquisition with energy and time stamps, MCA histograms, and run statistics. In Phase I, we upgraded one of our existing spectrometer designs to demonstrate the key principle of fast waveform capture using a 500 MSPS, 12 bit ADC and a Xilinx Virtex-4 FPGA. This upgraded spectrometer, named P500, performed well in initial tests of energy resolution, pulse shape analysis, and timing measurements, thus achieving item (a) above. In Phase II, we are revising the P500 to build a commercial prototype with the improvements listed in items (b)-(d). As described in the previous report, two devices were built to pursue this goal, named the Pixie-500 and the Pixie-500 Express. The Pixie-500 has only minor improvements from the Phase I prototype and is intended as an early commercial product (its production and part of its development were funded outside the SBIR). It also allows testing of the ADC performance in real applications.The Pixie-500 Express (or Pixie-500e) includes all of the improvements (b)-(d). At the end of Phase II of the project, we have tested and debugged the hardware, firmware and software of the Pixie-500 Express prototype boards delivered 12/3/2010. This proved substantially more complex than anticipated. At the time of writing, all hardware bugs have been fixed, the PCI Express interface is working, the SDRAM has been successfully tested and the SHARC DSP has been booted with preliminary code. All new ICs and circuitry on the prototype are working properly, however some of the planned firmware and software functions have not yet been completely implemented and debugged. Overall, due to the unanticipated complexity of the PCI Express interface, some aspects of the project could not be completed with the time and funds available in Phase II. These aspects will be completed in self-funded Phase III.

  1. Optical transmission modules for multi-channel superconducting quantum interference device readouts

    SciTech Connect (OSTI)

    Kim, Jin-Mok, E-mail: jmkim@kriss.re.kr; Kwon, Hyukchan; Yu, Kwon-kyu; Lee, Yong-Ho; Kim, Kiwoong [Brain Cognition Measurement Center, Korea Research Institute of Standards and Science, Daejeon 305-600 (Korea, Republic of)] [Brain Cognition Measurement Center, Korea Research Institute of Standards and Science, Daejeon 305-600 (Korea, Republic of)

    2013-12-15T23:59:59.000Z

    We developed an optical transmission module consisting of 16-channel analog-to-digital converter (ADC), digital-noise filter, and one-line serial transmitter, which transferred Superconducting Quantum Interference Device (SQUID) readout data to a computer by a single optical cable. A 16-channel ADC sent out SQUID readouts data with 32-bit serial data of 8-bit channel and 24-bit voltage data at a sample rate of 1.5 kSample/s. A digital-noise filter suppressed digital noises generated by digital clocks to obtain SQUID modulation as large as possible. One-line serial transmitter reformed 32-bit serial data to the modulated data that contained data and clock, and sent them through a single optical cable. When the optical transmission modules were applied to 152-channel SQUID magnetoencephalography system, this system maintained a field noise level of 3 fT/?Hz @ 100 Hz.

  2. Multichannel one-to-two transition amplitudes in a finite volume

    E-Print Network [OSTI]

    Raúl A. Briceño; Maxwell T. Hansen; André Walker-Loud

    2015-01-29T23:59:59.000Z

    We perform a model-independent, non-perturbative investigation of two-point and three-point finite-volume correlation functions in the energy regime where two-particle states can go on-shell. We study three-point functions involving a single incoming particle and an outgoing two-particle state, relevant, for example, for studies of meson decays (e.g., B-to-pi Kll) or meson photo production (e.g., pi gamma-to-pi pi). We observe that, while the spectrum solely depends on the on-shell scattering amplitude, the correlation functions also depend on off-shell amplitudes. The main result of this work is a generalization of the Lellouch-Luscher formula relating matrix elements of currents in finite and infinite spatial volumes. We extend that work by considering a theory with multiple, strongly-coupled channels and by accommodating external currents which inject arbitrary four-momentum as well as arbitrary angular momentum. The result is exact up to exponentially suppressed corrections governed by the pion mass times the box size. We also apply our master equation to various examples, including the two processes mentioned above as well as examples where the final state is an admixture of two open channels.

  3. Development of multichannel intermediate frequency system for electron cyclotron emission radiometer on KSTAR Tokamak

    SciTech Connect (OSTI)

    Kogi, Yuichiro; Sakoda, Takuya; Mase, Atsushi; Ito, Naoki; Yokota, Yuya [Art, Science and Technology Center for Cooperative Research, Kyushu University, Kasuga Fukuoka 816-8580 (Japan); Yamaguchi, Soichiro; Nagayama, Yoshio; Kawahata, Kazuo [National Institute for Fusion Science, Toki Gifu 509-5292 (Japan); Jeong, Seung H. [Korea Atomic Energy Research Institute, 1045 Daedeokdaero Daejeon (Korea, Republic of); Kwon, Myeun [National Fusion Research Institute, 113 Gwahangno Daejeon (Korea, Republic of)

    2008-10-15T23:59:59.000Z

    Plasma experiments on KSTAR are scheduled to start up this year (2008). We have developed an electron cyclotron emission (ECE) radiometer to measure the radial electron temperature profiles in KSTAR experiments. The radiometer system consists, briefly, of two downconversion stages, amplifiers, bandpass filter banks, and video detectors. These components are made commercially or developed in house. The system detects ECE power in the frequency range from 110 to 196 GHz, the detected signal being resolved by means of 48 frequency windows. Before installation of this system on KSTAR, we installed a part of this system on large helical device (LHD) to study the system under similar plasma conditions. In this experiment, the signal amplitude, considered to be proportional to the electron temperature, is measured. The time-dependent traces of the electron temperature measured by this radiometer are in good agreement with those provided by the LHD Michelson spectrometer. The system noise level which limits the minimum measurable temperature (converted to the electron temperature) is about 30 eV.

  4. The addition of multichannel analog-to-digital conversion capability to a minicomputer facility

    E-Print Network [OSTI]

    Malek-Shahmirzadi, Homayoun

    2012-06-07T23:59:59.000Z

    output with small 60 ma lamps. Figure 11 shows the circuit diagram of the buffers and the display lamp drivers. The inverting buffers are TTL 7400 NAND gates [17]. The input channel number is also displayed with a 7-segment display lamp. The 7... buffer exchanges. The input/output requests perform status checking of the standard I/O devices, data recording on the magnetic tape re- corder (MT) unit, and message printing on the teletype (TTY). Hewlett-Packard Software Interface The HP computers...

  5. Analytic structure of the multichannel Jost matrix for potentials with Coulombic tails

    SciTech Connect (OSTI)

    Rakityansky, S. A. [Department of Physics, University of Pretoria, Pretoria 0002 (South Africa)] [Department of Physics, University of Pretoria, Pretoria 0002 (South Africa); Elander, N. [Division of Chemical Physics, Department of Physics, Stockholm University, Stockholm, SE-106 91 (Sweden)] [Division of Chemical Physics, Department of Physics, Stockholm University, Stockholm, SE-106 91 (Sweden)

    2013-12-15T23:59:59.000Z

    A quantum system is considered that can move in N two-body channels with the potentials that may include the Coulomb interaction. For this system, the Jost matrix is constructed in such a way that all its dependencies on the channel momenta and Sommerfeld parameters are factorized in the form of explicit analytic expressions. It is shown that the two remaining unknown matrices are single-valued analytic functions of the energy and therefore can be expanded in the Taylor series near an arbitrary point within the domain of their analyticity. It is derived a system of first-order differential equations whose solutions determine the expansion coefficients of these series. Alternatively, the unknown expansion coefficients can be used as fitting parameters for parametrizing experimental data similarly to the effective-range expansion. Such a parametrization has the advantage of preserving proper analytic structure of the Jost matrix and can be done not only near the threshold energies, but around any collision or even complex energy. As soon as the parameters are obtained, the Jost matrix (and therefore the S-matrix) is known analytically on all sheets of the Riemann surface, and thus enables one to locate possible resonances.

  6. A multichannel, real-time MRI RF power monitor for independent SAR determination

    SciTech Connect (OSTI)

    El-Sharkawy, AbdEl-Monem M.; Qian Di; Bottomley, Paul A.; Edelstein, William A. [Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins, University School of Medicine, Baltimore, Maryland 21287 (United States); Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins, University School of Medicine, Baltimore, Maryland 21287 (United States) and Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, Maryland 21287 (United States); Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins, University School of Medicine, Baltimore, Maryland 21287 (United States)

    2012-05-15T23:59:59.000Z

    Purpose: Accurate measurements of the RF power delivered during clinical MRI are essential for safety and regulatory compliance, avoiding inappropriate restrictions on clinical MRI sequences, and for testing the MRI safety of peripheral and interventional devices at known RF exposure levels. The goal is to make independent RF power measurements to test the accuracy of scanner-reported specific absorption rate (SAR) over the extraordinary range of operating conditions routinely encountered in MRI. Methods: A six channel, high dynamic range, real-time power profiling system was designed and built for monitoring power delivery during MRI up to 440 MHz. The system was calibrated and used in two 3 T scanners to measure power applied to human subjects during MRI scans. The results were compared with the scanner-reported SAR. Results: The new power measurement system has highly linear performance over a 90 dB dynamic range and a wide range of MRI duty cycles. It has about 0.1 dB insertion loss that does not interfere with scanner operation. The measurements of whole-body SAR in volunteers showed that scanner-reported SAR was significantly overestimated by up to about 2.2 fold. Conclusions: The new power monitor system can accurately and independently measure RF power deposition over the wide range of conditions routinely encountered during MRI. Scanner-reported SAR values are not appropriate for setting exposure limits during device or pulse sequence testing.

  7. Low-energy neutron-12C analyzing powers: Results from a multichannel algebraic scattering theory

    E-Print Network [OSTI]

    J. P. Svenne; K. Amos; S. Karataglidis; D. van der Knijff; L. Canton; G. Pisent

    2005-10-29T23:59:59.000Z

    Analyzing powers in low-energy neutron scattering from 12C are calculated in an algebraic momentum-space coupled-channel formalism (MCAS). The results are compared with recently obtained experimental data. The channel-coupling potentials have been defined previously to reproduce the total cross section and sub-threshold bound states of the compound system. Without further adjustment, good agreement with data for the analyzing powers is obtained.

  8. Joint synchronization and calibration of multi-channel transform-domain charge sampling receivers

    E-Print Network [OSTI]

    Kotte Prakasam, Pradeep

    2010-07-14T23:59:59.000Z

    , the expansion coe?cients become the Fourier series coe?cients, hence, the receiver is referred to as the Frequency domain (FD) receiver. In each channel, the input signal is mixed with the basis signal and integrated in a window of duration Tc seconds... that cover the entire signal block provide a total of MN coe?cients R(m;n)jM?1m=0jN?1n=0 given by, Rm;n = Z mTs+Tc mTs x(t)'?n(t)dt; (1.1) where Ts = Tc ? Tov, x(t) is the received signal, m = 0 to M ? 1 indicates the mth segment in each channel and n = 0...

  9. Broadcast Strategies with Probabilistic Delivery Guarantee in Multi-Channel Multi-Interface

    E-Print Network [OSTI]

    Boyer, Edmond

    attracted increasing attention in re- cent years because of their low-cost and ease of deployment-CNRS 681 Rue de la Passerelle, BP72 38402 Saint Martin d'Heres, France Email: oliveira@imag.fr Fabrice. They are composed of static wireless routers and some of them act as gateways toward the Internet. In this paper, we

  10. rough ut Maximaization in Multi-channel I reless esh Access etworkcs

    E-Print Network [OSTI]

    Latchman, Haniph A.

    regulation entities and hence non-cooperative. The long- term behavior and corresponding pertormance and Yuguang Fang Department of Electrical and Computer Engineering University of Florida Gainesville, Florida of wireless mesh access networks is addressed. For the case ot cooperative access points, we present

  11. A multichannel magnetic probe system for analysing magnetic fluctuations in helical axis plasmas

    SciTech Connect (OSTI)

    Haskey, S. R.; Blackwell, B. D.; Seiwald, B.; Hole, M. J.; Pretty, D. G.; Howard, J.; Wach, J. [Plasma Research Laboratory, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 0200 (Australia)] [Plasma Research Laboratory, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 0200 (Australia)

    2013-09-15T23:59:59.000Z

    The need to understand the structure of magnetic fluctuations in H-1NF heliac [S. Hamberger et al., Fusion Technol. 17, 123 (1990)] plasmas has motivated the installation of a sixteen former, tri-axis helical magnetic probe Mirnov array (HMA). The new array complements two existing poloidal Mirnov arrays by providing polarisation information, higher frequency response, and improved toroidal resolution. The helical placement is ideal for helical axis plasmas because it positions the array as close as possible to the plasma in regions of varying degrees of favourable curvature in the magnetohydrodynamic sense, but almost constant magnetic angle. This makes phase variation with probe position near linear, greatly simplifying the analysis of the data. Several of the issues involved in the design, installation, data analysis, and calibration of this unique array are presented including probe coil design, frequency response measurements, mode number identification, orientation calculations, and mapping probe coil positions to magnetic coordinates. Details of specially designed digitally programmable pre-amplifiers, which allow gains and filters to be changed as part of the data acquisition initialisation sequence and stored with the probe signals, are also presented. The low shear heliac geometry [R. Jiménez-Gómez et al., Nucl. Fusion 51, 033001 (2011)], flexibility of the H-1NF heliac, and wealth of information provided by the HMA create a unique opportunity for detailed study of Alfvén eigenmodes, which could be a serious issue for future fusion reactors.

  12. Multi-channel ultra-low-power receiver architecture for body area networks

    E-Print Network [OSTI]

    Nadeau, Phillip Michel

    2011-01-01T23:59:59.000Z

    In recently published integrated medical monitoring systems, a common thread is the high power consumption of the radio compared to the other system components. This observation is indicative of a natural place to attempt ...

  13. Traffic-Aware Multi-Channel Multi-Stage Spectrum Sensing Protocols for Dynamic Spectrum Access

    E-Print Network [OSTI]

    Gabran, Wesam Ramy I. F.

    2012-01-01T23:59:59.000Z

    radios search for licensed spectral vacancies by performing spectrumspectrum sensing protocol, a DSA radio has to period- ically scan the licensedspectrum scarcity. All usable radio frequencies are already licensed

  14. Multichannel calculations for frequency shift and line broadening cross sections in collisions of cold hydrogen atoms

    E-Print Network [OSTI]

    Zygelman, B.; Jamieson, M.J.

    Zygelman,B. Jamieson,M.J. Stancil,P.C. Dalgarno,A. Workshop on Collisions of Cold Trapped Atoms at Joint Institute for Laboratory Astrophysics, Boulder, CO, U.S.A.

  15. F-k migration of multichannel seismic data from the Yucatan Basin, Caribbean Sea

    E-Print Network [OSTI]

    Oldham, David Martin

    2012-06-07T23:59:59.000Z

    49 LIST OF FIGURES (CONTINUED) FIGURE 24 Z2, migrated at v 1750 m/s, with zero-padding. . . . 25 Z2, migrated at v 2000 m/s, with zero-padding. . . . 26 22, migrated at v 3000 m/s, with zero-padding. . . . Page 50 51 52 27 Z3, unmigrated... B3, migrated at v 2000 m/s. 57 Yucstsn Basin profile 83, migrated at v - 2250 m/s. 58 Yucatan Basin profile 83, migrated at v 3000 m/s. 85 87 89 92 93 59 A point diffractor at 6300m, s) unmigrated, b) migrated. 95 60 Unmigrated response...

  16. Multichannel ECG and Noise Modeling: Application to Maternal and Fetal ECG Signals

    E-Print Network [OSTI]

    Clifford, Gari D.

    A three-dimensional dynamic model of the electrical activity of the heart is presented. The model is based on the single dipole model of the heart and is later related to the body surface potentials through a linear model ...

  17. Subduction dynamics at the middle America trench : new constraints from swath bathymetry, multichannel seismic data, and ¹?Be

    E-Print Network [OSTI]

    Kelly, Robyn K

    2003-01-01T23:59:59.000Z

    The cosmogenic radionuclide ¹?Be is a unique tracer of shallow sediment subduction in volcanic arcs. The range in ¹?Be enrichment in the Central American Volcanic Arc between Guatemala and Costa Rica is not controlled by ...

  18. Cenozoic gravity tectonics in the northern Gulf of Mexico induced by crustal extension. A new interpretation of multichannel seismic data

    E-Print Network [OSTI]

    Husson, Laurent

    Cenozoic gravity tectonics in the northern Gulf of Mexico induced by crustal extension. A new HUSSON3 Key-words. ­ Gravity tectonics, Cenozoic rifting, Gulf of Mexico, Texas, Northeast Mexico. Abstract. ­ The Gulf of Mexico margin in Texas is one of the most impressive examples of starved passive

  19. Fast, multi-channel real-time processing of signals with microsecond latency using graphics processing units

    SciTech Connect (OSTI)

    Rath, N., E-mail: Nikolaus@rath.org; Levesque, J. P.; Mauel, M. E.; Navratil, G. A.; Peng, Q. [Department of Applied Physics and Applied Mathematics, Columbia University, 500 W 120th St, New York, New York 10027 (United States)] [Department of Applied Physics and Applied Mathematics, Columbia University, 500 W 120th St, New York, New York 10027 (United States); Kato, S. [Department of Information Engineering, Nagoya University, Nagoya (Japan)] [Department of Information Engineering, Nagoya University, Nagoya (Japan)

    2014-04-15T23:59:59.000Z

    Fast, digital signal processing (DSP) has many applications. Typical hardware options for performing DSP are field-programmable gate arrays (FPGAs), application-specific integrated DSP chips, or general purpose personal computer systems. This paper presents a novel DSP platform that has been developed for feedback control on the HBT-EP tokamak device. The system runs all signal processing exclusively on a Graphics Processing Unit (GPU) to achieve real-time performance with latencies below 8 ?s. Signals are transferred into and out of the GPU using PCI Express peer-to-peer direct-memory-access transfers without involvement of the central processing unit or host memory. Tests were performed on the feedback control system of the HBT-EP tokamak using forty 16-bit floating point inputs and outputs each and a sampling rate of up to 250 kHz. Signals were digitized by a D-TACQ ACQ196 module, processing done on an NVIDIA GTX 580 GPU programmed in CUDA, and analog output was generated by D-TACQ AO32CPCI modules.

  20. Calculation of the scattering function of a multichannel scintillation detector used to record high-energy photon radiation

    SciTech Connect (OSTI)

    Zav'yalkin, F.M.; Osipov, S.P.

    1986-08-01T23:59:59.000Z

    This paper describes a method of calculating the scattering function for a linear array of detectors. The authors consider the detector arrangement which in the best way utilizes the radiation flux but which to the greatest extent is affected by the scattering of radiation from one detector to another: optically separated scintillatorsf in the form of parallelepipeds are assumed to be closely packed in a linear array and directed toward the radiation source. In order to obtain estimates of the scattering function with an accuracy of 3-5% for x close to zero at radiation not less than 2 MeV, the leakage of secondary electrons are taken into account.

  1. Design of multi-channel radio-frequency front-end for 200mhz parallel magnetic resonance imaging

    E-Print Network [OSTI]

    Liu, Xiaoqun

    2009-05-15T23:59:59.000Z

    increases to 64 or even 128, the traditional method of stacking the same number of radio-frequency (RF) receivers with very low level of integration becomes expensive and cumbersome. However, the cost, size, power consumption of the Parallel MRI receivers...

  2. Multi-Channel Auto-Dilution System for Remote Continuous Monitoring of High Soil-CO2 Fluxes

    SciTech Connect (OSTI)

    Amonette, James E.; Barr, Jonathan L.

    2009-04-23T23:59:59.000Z

    Geological sequestration has the potential capacity and longevity to significantly decrease the amount of anthropogenic CO2 introduced into the atmosphere by combustion of fossil fuels such as coal. Effective sequestration, however, requires the ability to verify the integrity of the reservoir and ensure that potential leakage rates are kept to a minimum. Moreover, understanding the pathways by which CO2 migrates to the surface is critical to assessing the risks and developing remediation approaches. Field experiments, such as those conducted at the Zero Emissions Research and Technology (ZERT) project test site in Bozeman, Montana, require a flexible CO2 monitoring system that can accurately and continuously measure soil-surface CO2 fluxes for multiple sampling points at concentrations ranging from background levels to several tens of percent. To meet this need, PNNL is developing a multi-port battery-operated system capable of both spatial and temporal monitoring of CO2 at concentrations from ambient to at least 150,000 ppmv. This report describes the system components (sampling chambers, measurement and control system, and power supply) and the results of a field test at the ZERT site during the late summer and fall of 2008. While the system performed well overall during the field test, several improvements to the system are suggested for implementation in FY2009.

  3. Dual-Band Multi-Channel Airborne Radar for Mapping the Internal and Basal Layers of Polar Ice Sheets

    E-Print Network [OSTI]

    Marathe, Kiran Chidambara

    2008-03-06T23:59:59.000Z

    Engineering lowpass filter acts as an anti-imaging filter. The lowpass filters have a 1.7 dB cut-o? frequency at 55 MHz. Since the maximum usable baseband signal is only 48 MHz (due to sinc frequency roll-o? e?ect, section 3.2) there is an alternate design...;#19;#0;#3;#0;#16;#0;#20;#0;#26;#0;#19;#0;#3;#0;0#0;+#0;] #0;,#0;/#0;#3;#0; #0;#3;#0;#22;#0;#3;#0;G#0;% #0;5#0;)#0;#3;#0;2#0;X#0;W #0;$#0;Q#0;D#0;O#0;R#0;J#0;#3;#0;'#0;H#0;Y#0;L#0;F#0;H#0;V #0;$#0;'#0;*#0;#28;#0;#19;#0;#20;#0;#3;#0;#16;#0;$#0;E#0;V#0;R...

  4. Frequency-domain criterion for the speech distortion weighted multichannel Wiener filter for robust noise reduction q

    E-Print Network [OSTI]

    systems. Therefore efficient speech enhancement techniques are called for. Since the desired speech signal and the undesired noise signal usually occupy overlapping frequency bands, sin- gle-microphone speech enhancement and the spatial characteristics of the sources can be used. Well-known multi-microphone speech enhancement

  5. The Lago Cardiel Basin, Argentina (49S): Origin and evolution revealed by high-resolution multichannel seismic reflection studies

    E-Print Network [OSTI]

    Gilli, Adrian

    The Lago Cardiel Basin, Argentina (49°S): Origin and evolution revealed by high source in the closed lake system of Lago Cardiel, Argentina (49°S). As part of an ongoing study reflection surveys in the closed lake system of Lago Cardiel, Argentina (Fig. 1), with 3.5-kHz and boomer

  6. A Closer Look at Salt, Faults, and Gas in the Northwestern Gulf of Mexico with 2-D Multichannel Seismic Data

    E-Print Network [OSTI]

    Nemazi, Leslie A.

    2010-07-14T23:59:59.000Z

    'W; 27 degrees 10N - 26 degrees N] were examined to evaluate the interplay of salt, faults and gas. Seismic interpretation revealed the study area has two different styles of faulting and two different types of salt bodies that vary east to west...

  7. DESIGN AND FABRICATION OF A FLAT-PLATE MULTICHANNEL HE-COOLED REFRACTORY HX FOR DIVERTOR APPLICATIONS

    E-Print Network [OSTI]

    Ghoniem, Nasr M.

    ) that employs open-cell refractory foam to enhance heat transfer from the heated plate to the helium coolant of research regarding refractory metal based helium- cooled divertors with enhanced heat transfer in plate these in that foam is used as a porous medium for heat transfer enhancement as detailed in previous publications5

  8. A Multichannel Edge-Weighted Centroidal Voronoi Tessellation Algorithm for 3D Super-alloy Image Segmentation

    E-Print Network [OSTI]

    Wang, Song

    in modern industry. Different applications may require super- alloys to have different mechanical algorithm than the comparison methods. 1. Introduction Super-alloys have been playing a very important role or physical properties, such as lightness, hardness, stiffness, electrical conduc- tivity and fluid

  9. Studies of multichannel rotational predissociation of Ar–H2 van der Waals molecule by the complexcoordinate coupledchannel formalism

    E-Print Network [OSTI]

    Chu, Shih-I; Datta, Krishna K.

    1982-01-01T23:59:59.000Z

    van der Waals molecules. Calculations are performed using several realistic anisotropic potentials obtained recently by experiments, including Lennard?Jones (LJ), Buckingham–Corner (BC) type potentials, as well as the semiempirical potential of Tang...

  10. Monolithic multichannel ultraviolet detector arrays and continuous phase evolution in MgxZn1xO composition spreads

    E-Print Network [OSTI]

    Rubloff, Gary W.

    American Institute of Physics. DOI: 10.1063/1.1623923 I. INTRODUCTION ZnO is a wide band gap semiconductor whose potential device applications include UV lasers,1,2 transparent con- ducting films for solar cells simultaneously is central in today's photonics tech- nology. In order to detect signals at discrete wavelengths

  11. Design, fabrication, and testing of a multichannel microfluidic device to dynamically control oxygen concentration conditions in-vitro

    E-Print Network [OSTI]

    Rodriguez, Rosa H

    2008-01-01T23:59:59.000Z

    Multilayer microfluidic devices were designed and fabricated such that an array of different oxygen concentrations could be applied to a testing area in any desired sequence and with unconstraint application times. The ...

  12. 1128 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 9, NO. 3, MARCH 2010 Optimal Multi-Channel Cooperative Sensing in

    E-Print Network [OSTI]

    Jiang, Hai

    --Cognitive radio, spectrum sensing, throughput maximization. I. INTRODUCTION DUE to the rapid growth of wireless-utilization of licensed spectrum at a time or a location has been observed by measurements of wireless spectrum usage [1 (secondary) users can utilize the spectrum when and where the licensed (primary) users are not using it

  13. 58 IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, VOL. 53, NO. 1, FEBRUARY 2004 Multichannel Raman Gas Analyzer: The Data

    E-Print Network [OSTI]

    Athens, University of

    with the green laser source previously used and reported in a related article. Index Terms--Air-pollution, data Raman Gas Analyzer: The Data Acquisition and Control System. Measurement Improvement With Blue Laser Albrecht, and Nikiforos G. Theofanous Abstract--In this paper, the data acquisition and control system

  14. Dynamic communities in multichannel data: An application to the foreign exchange market during the 20072008 credit crisis

    E-Print Network [OSTI]

    Porter, Mason A.

    , HSBC Bank, 8 Canada Square, London E14 5HQ, United Kingdom 5 Department of Physics, University of Miami

  15. Notes 12. (a) Annular pressure (damper) seals, and (b) Hydrostatic journal bearings

    E-Print Network [OSTI]

    San Andres, Luis

    2009-01-01T23:59:59.000Z

    Bearings ? Learn more See http://phn.tamu.edu/TRIBGroup Publications For complete list of computational model predictions and comparisons to test data (over 30 journal papers and 10+ technical progress reports to NASA, USAF, P&W, Rocketdyne, Snecma... Bearings for Oil-Free Turbomachinery,? Journal of Engineering for Gas Turbines and Power, (2007), 129(4), pp. 1020-1027. NOTES 12(b): HYDROSTATIC JOURNAL BEARINGS ? ? Dr. Luis San Andr?s (2009) 18 San Andr?s, L., S. Phillips and D. Childs, Static...

  16. Verification of particle simulation of radio frequency waves in fusion Animesh Kuley,1,2,a)

    E-Print Network [OSTI]

    Lin, Zhihong

    , China 3 Tri Alpha Energy, Inc., Post Office Box 7010, Rancho Santa Margarita, California 92688, USA step in the quest for the fusion energy. First, the RF waves in ITER will be used to deliver sufficient

  17. Pneumatically switchable graded index metamaterial lens I. E. Khodasevych,1,2,a)

    E-Print Network [OSTI]

    the material can pose a challenge for practical realiza- tion. The engineered refractive indices of metamaterials can be varied to a much greater extent than is possible with natu- ral materials by adjusting to alter the electromagnetic signature of a lens when it is not in use for stealth purposes. Tunable lenses

  18. Jrgen Trmborg1,2,a , David Skalid Amundsen1,2

    E-Print Network [OSTI]

    Johansen, Tom Henning

    while the rest remains stuck. Figure 3: A loading curve and four panels with precursor lengths: Left: by adjusting the local friction coefficients, good agreement with the experimental loading curve by dis- tributing the external normal load asym- metrically. Figure 4 shows that this alters the Lp

  19. 9 10 10.95 12 A Principled Approach To The Integration Of

    E-Print Network [OSTI]

    Johnson, Chris

    . . . . . . . . . . . . . 9 1.4.1 Hermeneutics And Openness . . . . . . . . . . . . . . . . . . 10 1.4.2 Hermeneutics And Complexity . . . . . . . . . . . . . . . . . 10 1.4.3 Hermeneutics And Dynamism

  20. NOAA Technical Memorandum ERL PMEL-12 A SHALLOW WATER PRESSURE-TEMPERATURE GAGE (PTG)

    E-Print Network [OSTI]

    of nearly an order of magnitude in all size bins, with pronounced increases in larger size bins. · The Raman&M University Chart 1: The 0.3 m size bin exceeds 1x10 particles per 0.5000ft³ and particle count overlaps. Chart 2: The 0.3m bin count predominates and there are significant differences between size bin counts

  1. Josephson vortices as flexible waveguides for terahertz waves D. R. Gulevich,1,2,a

    E-Print Network [OSTI]

    Nori, Franco

    switching between different ports. Here we focus our attention to devices based on either artificial by the superconducting gap, high temperature layered superconductors, including Bi2Sr2CaCu2O8+x and YBaCuO, lift

  2. Anomalous thermal relaxation in carbon nanoclusters Alexander V. Savin1,2,a

    E-Print Network [OSTI]

    . The experimental demonstrations employed two types of absorbing particles, i carbon nano- clusters produced by laser ablation and ii hollow glass carbon-coated microspheres. Being inspired by the experimental of carbon clusters, in this let- ter, we study how the thermal relaxation of the carbon nano- clusters

  3. CEC'99 Amor & Anumba Page 1 of 12 A SURVEY AND ANALYSIS OF INTEGRATED

    E-Print Network [OSTI]

    Amor, Robert

    such as the application area, development environment, modelling approaches used, reusability, hardware and software and Dr C. J. Anumba2 ABSTRACT This paper is concerned with the development of an integrated project approaches to its development. A detailed survey and analysis of recent UK projects that have sought

  4. Hot electron effect in nanoscopically thin photovoltaic junctions K. Kempa,1,2,a

    E-Print Network [OSTI]

    Huang, Jianyu

    , Boston College, Chestnut Hill, Massachusetts 02467, USA 2 Solasta Inc., Newton, Massachusetts 02458, USA at absorber-electrode contacts to facilitate isoentropic cooling.11,14 In this letter, we em- ployed

  5. Table HC1-12a. Housing Unit Characteristics by West Census Region,

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security AdministrationcontrollerNanocrystallineForeign ObjectOUR TableE9. Total End-Use Energy1a. Housing

  6. Table HC1-2a. Housing Unit Characteristics by Year of Construction,

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security AdministrationcontrollerNanocrystallineForeign ObjectOUR TableE9. Total End-Use Energy1a. Housinga.2a.

  7. What is the fate of runaway positrons in tokamaks? Hong Qin,1,2,a)

    E-Print Network [OSTI]

    tools. VC 2014 AIP Publishing LLC. [http://dx.doi.org/10.1063/1.4882435] Positron, the anti-particle is typically above 10 MeV, most of their "children" positrons are born relativistic and can be acceler- ated

  8. Salt Tectonics and Its Effect on Sediment Structure and Gas Hydrate Occurrence in the Northwestern Gulf of Mexico from 2-D Multichannel Seismic Data

    E-Print Network [OSTI]

    Lewis, Dan'L 1986-

    2012-10-04T23:59:59.000Z

    Geophysical Corporation. The area covered by the data set encompasses two main outer continental shelf (OCS) protraction zones: East Breaks and Corpus Christi. The data set also overlaps surrounding protraction areas: Port Isabel, Alaminos Canyon, Keathley.... The exception to criterion 2 is the high relief BSR. Because these tend to occur along inclined BGHSZ around salt diapirs, they are not parallel to the seafloor. A model BGHSZ (based on equations from Milkov and Sassen [2001]) was calculated in Fortran...

  9. Intracavitary in vivo dosimetry based on multichannel fiber-coupled radioluminescence and optically stimulated luminescence of Al{sub 2}O{sub 3}:C

    SciTech Connect (OSTI)

    Spasic, E.; Magne, S. [CEA, LIST, Laboratoire de Mesures Optiques, F-91191 Gif-sur-Yvette (France); Aubineau-Laniece, I.; De Carlan, L. [CEA, LIST, Laboratoire National Henri Becquerel, F-91191 Gif-sur-Yvette (France); Malet, C.; Ginestet, C. [Centre Leon-Berard, Service de Physique, 28 rue Laennec, F-69373 Lyon (France); Ferdinand, P. [CEA, LIST, Laboratoire de Mesures Optiques, F-91191 Gif-sur-Yvette (France)

    2011-07-01T23:59:59.000Z

    Fiber Optic Dosimetric Catheters (FODCs) composed of chains of alumina crystals are investigated by the CEA LIST within the French ANR-INTRADOSE Project in the purpose of intracavitary in vivo dosimetry (IVD) during Brachytherapy (BT) with iridium sources and Intensity-Modulated Radiation Therapy (IMRT) with linear accelerators. A dedicated process involving PMMA fibers, cast altogether forming hexagonal bundle, is demonstrated. Optically Stimulated Luminescence (OSL) signals are recorded on-line after irradiation and absorbed doses are compared to planned dose distribution. Real-time dose measurements may also be performed by recording the Radioluminescence (RL), spontaneously emitted by the crystals during irradiation. In this case, a correction method is implemented to correct for stem effect influence (Cerenkov and scintillation generated within the fibers). For BT, the dual-fiber subtraction method is used (using a reference fiber) whereas the time discrimination method is used for IMRT. The experimental dose distribution leads to an underestimation of the source-sensor distance presumably due to energy dependence of the alumina crystal at low photon energy. At the time being, Monte-Carlo modeling of the FODC is performed with the aim to estimate this energy dependence and finally correct for it. Finally, metrological and preclinical validations are still running at Centre Leon Berard (Lyon (France)) in the purpose of checking the compliance of the FODC prototypes with treatment specifications and medical constraints. (authors)

  10. Memory Efficient On-Line Streaming for Multichannel Spike Train Bo Yu, Terrence Mak, Leslie Smith, Yihe Sun, Alex Yakovlev and Chi-Sang Poon

    E-Print Network [OSTI]

    Smith, Leslie S.

    . Terrence Mak and Alex Yakovlev are with School of Electrical, Electronic and Computer Engineering University of Stirling, Stirling, FK9 4LA, UK. Chi-Sang Poon is with Harvard-MIT Division of Health Sciences

  11. Development and Implementation of a VHF High Power Amplifier for the Multi-Channel Coherent Radar Depth Sounder/Imager System

    E-Print Network [OSTI]

    Crowe, Reid William

    2013-08-31T23:59:59.000Z

    ............................................................................. 106 Appendix B findFrequency MATLAB Function ....................................................................... 112 Appendix C WF_First_Run MATLAB Function ........................................................................ 113 Appendix D... Vs. frequency of the driver amplifier stage operating in pulse mode for an input drive level of -8.4 dBm ............................................................................ 53 vii Figure 5.9: Measured Gain Vs. Frequency of the high...

  12. Influence of Alloy Microstructure on Oxide Growth in HCM12A in Supercritical Water Jeremy Bischoff1

    E-Print Network [OSTI]

    Motta, Arthur T.

    is a ferritic-martensitic steel alloy envisioned for cladding and structural material in the Generation IV The Supercritical Water Reactor is one of the six Generation IV nuclear power plant designs and was envisioned

  13. Generalized redundancies for time series analysis Dean Prichard 1;2a and James Theiler 2;3

    E-Print Network [OSTI]

    Theiler, James

    , Nonproliferation and International Security Division, Los Alamos National Laboratory, Los Alamos, NM 87545 3 Santa Fe Institute, 1399 Hyde Park Road, Santa Fe, NM 87501 (Draft: February 17, 1995) ABSTRACT Extensions

  14. REFRIG-12: a graphics-augmented interactive program for designing vapor-compression refrigeration/heatpump cycles

    SciTech Connect (OSTI)

    Davis, B.W.

    1984-09-07T23:59:59.000Z

    REGRIG-12 is an interactive program that serves as a tool for designing and analyzing thermodynamic vapor-compression refrigeration/heatpump cycles. The software, intended for use in the CP/M environment, is formulated so that graphic and alphanumeric responses to design decisions are displayed simultaneously on separate monitors. REFRIG-12 may be modified easily to run on systems that do not have a graphics capability by simply deleting the graphics functions from the source programs. Temperature-Entropy property coordinates are used to describe the thermodynamic processes Freon-12 undergoes as it passes through the various mechanical components which ultimately produce the cycle. The processes are displayed graphically as the user makes the decisions to design a refrigeration cycle. System prompts and software interlocks are designed into REFRIG-12 so the user can proceed comfortably and easily through the operations that lead to a cycle design. When a design has been completed, REFRIG-12 offers the user an opportunity to make changes to it. The effects of design changes become graphically discernible through successive overlays on the graphics monitor. DOTPLOT can be executed to produce a hard copy of the graphics monitor display. Summaries of the cycle performance, pertinent energy transfers, and other engineering consequences of the design specifications can also be presented - at user option - on both the CRT and the printer. REFRIG-12 is organized so that a relatively small main program controls 35 subroutines. Each subroutine has stand-alone characteristics and may be used with programs having other primary purposes. The subroutines can be conveniently merged (or chained) into system memory as needed.

  15. Structure and stoichiometry of ,,0001... 4HSiC/oxide interface Xingguang Zhu,1,2,a

    E-Print Network [OSTI]

    Garfunkel, Eric

    polytype of silicon carbide SiC is a promising candidate for high temperature and high power metal that hampers SiC device applications. The nature of the transition region stoichiometry and structure need beneath the SiC/SiO2 interface, setting limits on the previously predicted nonstoichiometric transition

  16. file://C:\Documents%20and%20Settings\VM3\My%20Documents\hc6-12a

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines AboutDecemberSteam Coal Import CostsLiquids Reserve Class No338a.a.8a.December0a.2a.

  17. Data:12a45141-7972-4ec8-a2dc-37fedc8133d3 | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of48d9ff47edf3 No revision has beenba5b1d371 No revision has been approved for this page. It is currently

  18. Data:12a700f2-b169-42ae-bcdf-25646587ea4b | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of48d9ff47edf3 No revision has beenba5b1d371 No revision has been approved for this page. It is

  19. Data:1844e12d-12a3-4722-a554-be3c170bffaa | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of48d9ff47edf3 No revision has beenba5b1d371 Nob97eb4d202d0d9aabb1ca46d Nocbee8e98ea4a No2e49a5d2f22746ba6f1

  20. Redelegation Order No. 00-010.01-01.12A to the Manager of the Golden Field

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared at 278, 298,NIST 800-53 Revision 3Reddy,Operations Office -Office

  1. Data:33d1657d-8616-4475-94a0-e6ed12a79571 | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of48d9ff47edf3 Noc7e1a8ffe No869d7ced0c4aa77f45ad4a No revisionc-a48386b08d41

  2. Structural and Morphologic Study of Shatsky Rise Oceanic Plateau in the Northwest Pacific Ocean from 2D Multichannel Seismic Reflection and Bathymetry Data and Implications for Oceanic Plateau Evolution

    E-Print Network [OSTI]

    Zhang, Jinchang

    2014-04-10T23:59:59.000Z

    and shallow flank slopes (<0.5o-1.5o), characterized by lava flows emanating from the volcano center and extending hundreds of kilometers down smooth, shallow flanks to the surrounding seafloor. Ori Massif is another large volcano that is similar, but smaller...

  3. Dipole-Induced Vortex Ratchets in Superconducting Films with Arrays of Micromagnets C. C. de Souza Silva,1,2,* A. V. Silhanek,1

    E-Print Network [OSTI]

    Moshchalkov, Victor V.

    Dipole-Induced Vortex Ratchets in Superconducting Films with Arrays of Micromagnets C. C. de Souza. By carrying out transport measurements with ac drive, we observed experimentally a recently predicted ratchet on the phenomenon known as ratchet effect [8]. As recently proposed by Carneiro [9], a different way to create

  4. ZPR-3 Assembly 12 : A cylindrical assembly of highly enriched uranium, depleted uranium and graphite with an average {sup 235}U enrichment of 21 atom %.

    SciTech Connect (OSTI)

    Lell, R. M.; McKnight, R. D.; Perel, R. L.; Wagschal, J. J.; Nuclear Engineering Division; Racah Inst. of Physics

    2010-09-30T23:59:59.000Z

    Over a period of 30 years, more than a hundred Zero Power Reactor (ZPR) critical assemblies were constructed at Argonne National Laboratory. The ZPR facilities, ZPR-3, ZPR-6, ZPR-9 and ZPPR, were all fast critical assembly facilities. The ZPR critical assemblies were constructed to support fast reactor development, but data from some of these assemblies are also well suited for nuclear data validation and to form the basis for criticality safety benchmarks. A number of the Argonne ZPR/ZPPR critical assemblies have been evaluated as ICSBEP and IRPhEP benchmarks. Of the three classes of ZPR assemblies, engineering mockups, engineering benchmarks and physics benchmarks, the last group tends to be most useful for criticality safety. Because physics benchmarks were designed to test fast reactor physics data and methods, they were as simple as possible in geometry and composition. The principal fissile species was {sup 235}U or {sup 239}Pu. Fuel enrichments ranged from 9% to 95%. Often there were only one or two main core diluent materials, such as aluminum, graphite, iron, sodium or stainless steel. The cores were reflected (and insulated from room return effects) by one or two layers of materials such as depleted uranium, lead or stainless steel. Despite their more complex nature, a small number of assemblies from the other two classes would make useful criticality safety benchmarks because they have features related to criticality safety issues, such as reflection by soil-like material. ZPR-3 Assembly 12 (ZPR-3/12) was designed as a fast reactor physics benchmark experiment with an average core {sup 235}U enrichment of approximately 21 at.%. Approximately 68.9% of the total fissions in this assembly occur above 100 keV, approximately 31.1% occur below 100 keV, and essentially none below 0.625 eV - thus the classification as a 'fast' assembly. This assembly is Fast Reactor Benchmark No. 9 in the Cross Section Evaluation Working Group (CSEWG) Benchmark Specifications and has historically been used as a data validation benchmark assembly. Loading of ZPR-3 Assembly 12 began in late Jan. 1958, and the Assembly 12 program ended in Feb. 1958. The core consisted of highly enriched uranium (HEU) plates, depleted uranium plates and graphite plates loaded into stainless steel drawers which were inserted into the central square stainless steel tubes of a 31 x 31 matrix on a split table machine. The core unit cell consisted of two columns of 0.125 in.-wide (3.175 mm) HEU plates, seven columns of 0.125 in.-wide depleted uranium plates and seven columns of 0.125 in.-wide graphite plates. The length of each column was 9 in. (228.6 mm) in each half of the core. The graphite plates were included to produce a softer neutron spectrum that would be more characteristic of a large power reactor. The axial blanket consisted of 12 in. (304.8 mm) of depleted uranium behind the core. The thickness of the radial blanket was approximately 12 in. and the length of the radial blanket in each half of the matrix was 21 in. (533.4 mm). The assembly geometry approximated a right circular cylinder as closely as the square matrix tubes allowed. According to the logbook and loading records for ZPR-3/12, the reference critical configuration was loading 10 which was critical on Feb. 5, 1958. The subsequent loadings were very similar but less clean for criticality because there were modifications made to accommodate reactor physics measurements other than criticality. Accordingly, ZPR-3/12 loading 10 was selected as the only configuration for this benchmark. As documented below, it was determined to be acceptable as a criticality safety benchmark experiment. An accurate transformation to a simplified model is needed to make any ZPR assembly a practical criticality-safety benchmark. There is simply too much geometric detail in an exact (as-built) model of a ZPR assembly, even a clean core such as ZPR-3/12 loading 10. The transformation must reduce the detail to a practical level without masking any of the important features of the critical experiment. And it must d

  5. STEP DEPOSITON Fig. 12: (a) schematic showing top view. (b) before pseudo3D deposition. (c) after pseudo3D deposition.

    E-Print Network [OSTI]

    Dutton, Robert W.

    requirements for solving coupled systems of equations using ProPHLEX as a prototype vehicle. The solution

  6. Rough order of magnitude cost estimate for immobilization of 50MT of plutonium using new faciliites at the Savannah River site: alternative 12A

    SciTech Connect (OSTI)

    DiSabatino, A., LLNL

    1998-06-01T23:59:59.000Z

    The purpose of this Cost Estimate Report is to identify preliminary capital and operating costs for a facility to immobilize 50 metric tons of plutonium using ceramic in a new facility at Savannah River Site (SRS).

  7. Comment on ''Nonlinear adiabatic passage from fermion atoms to boson molecules'' A.P. Itin, 1,2 , A.A. Vasiliev 2 , and S. Watanabe 1

    E-Print Network [OSTI]

    resonance in a quantum gas of fermionic atoms was considered recently in I.Tikhonenkov, E.Pazy et al, Phys Hamiltonian system with a slowly changing parameter. Analysis of the latter system was done incorrectly of the separatrix crossing theory and asymptotically # # . Dynamics of Bose­Einstein condensates (BEC) intro­ duce

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  1. Data:0b12a8f0-ce39-41bc-b6cf-16606647c57c | Open Energy Information

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  1. Data:80a802c5-12a0-4bf9-ae69-244197d3dcb2 | Open Energy Information

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  6. Ceramic Electron Multiplier

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Comby, G.

    1996-10-01T23:59:59.000Z

    The Ceramic Electron Multipliers (CEM) is a compact, robust, linear and fast multi-channel electron multiplier. The Multi Layer Ceramic Technique (MLCT) allows to build metallic dynodes inside a compact ceramic block. The activation of the metallic dynodes enhances their secondary electron emission (SEE). The CEM can be used in multi-channel photomultipliers, multi-channel light intensifiers, ion detection, spectroscopy, analysis of time of flight events, particle detection or Cherenkov imaging detectors. (auth)

  7. E-Print Network 3.0 - abdelkader hameurlain rosine Sample Search...

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    Wales, Cardiff Collection: Computer Technologies and Information Sciences 14 Service Oriented Architecture in Multichannel e-Services Advanced Transactions for Electronic Summary:...

  8. E-Print Network 3.0 - angle fluorescence interference Sample...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    both the excitation and fluorescence detection bands of WIBS. Interference filters were avoided... A low-cost multi-channel aerosol fluorescence sensor for networked deployment...

  9. E-Print Network 3.0 - absorption spectrometric detection Sample...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    is achieved using two... microbalance QCM , multichannel spectro- scopic ellipsometry,2,3 atomic absorption spectroscopy AAS , electron Source: Rubloff, Gary W. - Institute for...

  10. A Journey from UCSB physics to Audrey Nelson

    E-Print Network [OSTI]

    Akhmedov, Azer

    Target Gas Patented Waveguide Incandescent Infrared Source Microprocessor Diffusion Membranes Dual Beam integrated electronics Incandescent IR source and multi-channel thermopile detector Current gases applicable

  11. Faculty of Mathematics and Physics, Charles University, Prague

    E-Print Network [OSTI]

    Sroubek, Filip

    Image Fusion via Multichannel Blind Deconvolution Ph.D. Thesis Ing. Filip Sroubek Supervisor: Doc. Ing Republic, Prague I2 ­ Software systems Prague, May 2003 #12;#12;Abstract The thesis focuses on fusion. The fusion process is then referred to as multichannel blind deconvolution and it frequently occurs

  12. RCRA Facility investigation report for Waste Area Grouping 6 at Oak Ridge National Laboratory, Oak Ridge, Tennessee. Volume 5, Technical Memorandums 06-09A, 06-10A, and 06-12A: Environmental Restoration Program

    SciTech Connect (OSTI)

    Not Available

    1991-09-01T23:59:59.000Z

    This report provides a detailed summary of the activities carried out to sample groundwater at Waste Area Grouping (WAG) 6. The analytical results for samples collected during Phase 1, Activity 2 of the WAG 6 Resource Conservation and Recovery Act Facility Investigation (RFI) are also presented. In addition, analytical results for Phase 1, activity sampling events for which data were not previously reported are included in this TM. A summary of the groundwater sampling activities of WAG 6, to date, are given in the Introduction. The Methodology section describes the sampling procedures and analytical parameters. Six attachments are included. Attachments 1 and 2 provide analytical results for selected RFI groundwater samples and ORNL sampling event. Attachment 3 provides a summary of the contaminants detected in each well sampled for all sampling events conducted at WAG 6. Bechtel National Inc. (BNI)/IT Corporation Contract Laboratory (IT) RFI analytical methods and detection limits are given in Attachment 4. Attachment 5 provides the Oak Ridge National Laboratory (ORNL)/Analytical Chemistry Division (ACD) analytical methods and detection limits and Resource Conservation and Recovery Act (RCRA) quarterly compliance monitoring (1988--1989). Attachment 6 provides ORNL/ACD groundwater analytical methods and detection limits (for the 1990 RCRA semi-annual compliance monitoring).

  13. Time-dependent approach to electron pumping in open quantum systems G. Stefanucci,1,2,* S. Kurth,1,2 A. Rubio,2,3 and E. K. U. Gross1,2

    E-Print Network [OSTI]

    Gross, E.K.U.

    Time-dependent approach to electron pumping in open quantum systems G. Stefanucci,1,2,* S. Kurth,1 time-dependent approach to investigate the motion of electrons in quantum pump device configurations that for pumping across a single potential barrier, electrons are transported in pockets and the transport

  14. Boron nitride formation on magnesium studied by ab initio calculations S. Riikonen,1 A. S. Foster,1,2 A. V. Krasheninnikov,1,3 and R. M. Nieminen1,*

    E-Print Network [OSTI]

    Krasheninnikov, Arkady V.

    Boron nitride formation on magnesium studied by ab initio calculations S. Riikonen,1 A. S. Foster,1 of the art method for producing boron nitride nanotubes in which magnesium has been speculated to act boron and nitrogen containing molecules. We observe that magnesium promotes boron-nitride BN molecule

  15. Insulating state of granular superconductors in a strong-coupling regime I. S. Beloborodov,1 Ya. V. Fominov,1,2 A. V. Lopatin,1 and V. M. Vinokur1

    E-Print Network [OSTI]

    Fominov, Yakov

    Insulating state of granular superconductors in a strong-coupling regime I. S. Beloborodov,1 Ya. V-field-induced insulating state in a two-dimensional granular superconductor with relatively strong intergranular coupling the superconductor-insulator transi- tion, and a reentrant drop upon further increase of magnetic field. The magnetic

  16. Multiplet effects in the electronic structure of light rare-earth metals S. Lebgue,1,2 A. Svane,3 M. I. Katsnelson,4 A. I. Lichtenstein,5 and O. Eriksson1

    E-Print Network [OSTI]

    Svane, Axel Torstein

    radioactive element promethium is excluded from our study, since experimental information is more scarce. Also

  17. Electronic structure and ionicity of actinide oxides from first principles L. Petit,1,2,* A. Svane,1 Z. Szotek,2 W. M. Temmerman,2 and G. M. Stocks3

    E-Print Network [OSTI]

    Svane, Axel Torstein

    . A mixture of UO2 and PuO2, where Pu is blended with either natural or depleted uranium, constitutes. INTRODUCTION Actinide oxides play a dominant role in the nuclear fuel cycle.1 For many years, uranium dioxide

  18. Data:Ea6a12a3-4a11-4d01-8ca1-0be1b3e38aeb | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Pagec-01b596aa1744b55997c1cc No revision hasa3e396ee3eb No revision has

  19. Data:Adb12a6c-76a5-4ff7-9db1-8e5b113c0667 | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address:011-DNA Jump to: navigation,f31366697Acb988dd-1e30-4e5b-90ac-6a4926210312 No

  20. Two-phase xenon emission detector with electron multiplier and optical readout by multipixel avalanche Geiger photodiodes

    E-Print Network [OSTI]

    Akimov, D Yu; Alexandrov, I S; Belov, V A; Bolozdynya, A I; Burenkov, A A; Buzulutskov, A F; Danilov, M V; Efremenko, Yu V; Kirsanov, M A; Kovalenko, A G; Stekhanov, V N

    2013-01-01T23:59:59.000Z

    A successful operation of a new optical readout system (THGEM + WLS + MGPDs (multichannel array of multipixel avalanche Geiger photodiodes) in a two-phase liquid xenon detector was demonstrated.

  1. Nested potassium hydroxide etching and protective coatings for silicon-based microreactors

    E-Print Network [OSTI]

    de Mas, Nuria

    We have developed a multilayer, multichannel silicon-based microreactor that uses elemental fluorine as a reagent and generates hydrogen fluoride as a byproduct. Nested potassium hydroxide etching (using silicon nitride ...

  2. RF Pulse Design for Parallel Excitation in Magnetic Resonance Imaging

    E-Print Network [OSTI]

    Liu, Yinan

    2012-07-16T23:59:59.000Z

    Parallel excitation is an emerging technique to improve or accelerate multi-dimensional spatially selective excitations in magnetic resonance imaging (MRI) using multi-channel transmit arrays. The technique has potential in many applications...

  3. How Sales Taxes Affect Customer and Firm Behavior: The Role of Search on the Internet

    E-Print Network [OSTI]

    Anderson, Eric T.

    When a multichannel retailer opens its first retail store in a state, the firm is obligated to collect sales taxes on all Internet and catalog orders shipped to that state. This article assesses how opening a store affects ...

  4. PLOrk: The Princeton Laptop Orchestra, Year 1 Daniel Trueman*

    E-Print Network [OSTI]

    , a multi-channel hemispherical speaker, a variety of control devices (key- boards, graphics tablets. The challenges are many: what kinds of sounds can we create? how can we physically control these sounds? how do

  5. Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Economic development in Northern New Mexico focus of new podcast from Los Alamos National Laboratory November 25, 2013 Podcast part of Lab's new multi-channel effort to better...

  6. Generalized quantum defect methods in quantum chemistry

    E-Print Network [OSTI]

    Altunata, Serhan

    2006-01-01T23:59:59.000Z

    The reaction matrix of multichannel quantum defect theory, K, gives a complete picture of the electronic structure and the electron - nuclear dynamics for a molecule. The reaction matrix can be used to examine both bound ...

  7. Calibration Techniques for Time-Interleaved SAR A/D Converters

    E-Print Network [OSTI]

    Stepanovic, Dusan Vlastimir

    2012-01-01T23:59:59.000Z

    3.4.3 Multi-Channel SAR Calibration . . . . . . . . .3.3.1 Single-Channel Single-Core SAR ADC Calibration . . . .Channel Dual-Core SAR ADC Calibration . . . . 3.3.3 Multi-

  8. Analytica Chimica Acta 485 (2003) 263269 Dual amperometric biosensor device for analysis of

    E-Print Network [OSTI]

    Ferreira, Márcia M. C.

    of laccase and tyrosinase for different phenolic compounds. A multichannel potentiostat was used to monitor simultaneously laccase- and tyrosinase-based biosensors, and the data were treated using the partial least

  9. Microwave radiative transfer in the mixed-phase regions of tropical rainfall

    E-Print Network [OSTI]

    Jin, Kyoung-Wook

    2001-01-01T23:59:59.000Z

    on an RTM. To accomplish this, we examined data taken by the Convair-580 aircraft during the KWAJEX (Kwajalein Experiment). In order to calculate radiative transfer, the AMMR (Airborne Multi-channel Microwave Radiometer) data were combined with radiosonde...

  10. LOCAL CONVERGENCE OF AN ALGORITHM FOR SUBSPACE ...

    E-Print Network [OSTI]

    2014-07-01T23:59:59.000Z

    [22] G. S. Wagner and T. J. Owens, Signal detection using multi-channel seismic data, Bulletin of the Seismological Society of America, 86 (1996), pp. 221–231.

  11. Optimal Channel Probing and Transmission Scheduling for Opportunistic Spectrum Access

    E-Print Network [OSTI]

    Chang, Nicholas B.

    In this study, we consider optimal opportunistic spectrum access (OSA) policies for a transmitter in a multichannel wireless system, where a channel can be in one of multiple states. In such systems, the transmitter typically ...

  12. Signal Integrity Analysis of a 2-D and 3-D Integrated Potentiostat for Neurotransmitter Sensing

    E-Print Network [OSTI]

    Stanacevic, Milutin

    for the substrate, power network, and through silicon vias (TSVs). These models are combined integrated implantable systems. I. INTRODUCTION A multichannel potentiostat, integrated with micro and power dissipation. Signal integrity characteristics of a 2- D and 3-D integrated potentiostat

  13. CANDAC 16*16M Revision 1.

    E-Print Network [OSTI]

    Kozak, Victor R.

    multi-channel functional generator. User can store in on-board memory up to 8 files, which describes changing output voltages in time by using a linear interpolation method. A start of file procession may

  14. 1-apr-2011. Embedded software version 4.

    E-Print Network [OSTI]

    Kozak, Victor R.

    or a single multi-channel functional generator. User can store in on-board memory a file, which describes changing output voltages in time by using a linear interpolation method. A start of file procession may

  15. A.12a (Pre-SAS 115) Letter to communicate significant deficiencies and/or material weaknesses in internal control over financial reporting noted in an audit of financial statements of a nonpublic entity, excluding FDICIA engagements (Rev. 1/08)

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergy Cooperation |South Valley ResponsibleSubmissionof EnergyA Strategic FrameworkA

  16. Scanning angle Raman spectroscopy: Investigation of Raman scatter enhancement techniques for chemical analysis

    SciTech Connect (OSTI)

    Meyer, Matthew W. [Ames Laboratory

    2013-03-14T23:59:59.000Z

    This thesis outlines advancements in Raman scatter enhancement techniques by applying evanescent fields, standing-waves (waveguides) and surface enhancements to increase the generated mean square electric field, which is directly related to the intensity of Raman scattering. These techniques are accomplished by employing scanning angle Raman spectroscopy and surface enhanced Raman spectroscopy. A 1064 nm multichannel Raman spectrometer is discussed for chemical analysis of lignin. Extending dispersive multichannel Raman spectroscopy to 1064 nm reduces the fluorescence interference that can mask the weaker Raman scattering. Overall, these techniques help address the major obstacles in Raman spectroscopy for chemical analysis, which include the inherently weak Raman cross section and susceptibility to fluorescence interference.

  17. Single-photon quantum router with multiple output ports

    E-Print Network [OSTI]

    Wei-Bin Yan; Heng Fan

    2013-11-26T23:59:59.000Z

    We study the multi-channel quantum routing of the single photons in a waveguide-emitter system. The channels are composed by the waveguides and are connected by intermediate two-level emitters. By adjusting the intermediate emitters, the output channels of the input single photons can be controlled. This is demonstrated for the cases of one output channel, two output channels and the generic N output channels. The results show that the multi-channel quantum routing of single photons can be well achieved in present system. This sheds light on the experimental realization of quantum routing of single photons.

  18. A coincidence Mssbauer experiment with 119mSn E. I. Vapirev, P. S. Kamenov, D. L. Balabanski, S. I. Ormandjiev and K. Yanakiev

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    - multichannel analyser., gamma-ray from the decay of the metastable state serves as a stop signal. Article spectrum, Doppler velocity V = oo). After random coincidences and prompt peak subtraction the ratio is equivalent to a multiplication of the time dep

  19. Study of excited nucleons and their structure

    SciTech Connect (OSTI)

    Burkert, Volker D. [JLAB, Newport News, VA (United States)

    2014-01-01T23:59:59.000Z

    Recent advances in the study of excited nucleons are discussed. Much of the progress has been achieved due to the availability of high precision meson production data in the photoproduction and electroproduction sectors, the development of multi-channel partial wave analysis techniques, and advances in Lattice QCD with predictions of the full excitation spectrum.

  20. Experimental multi-photon-resolving detector using a single avalanche photodiode

    E-Print Network [OSTI]

    Ondrej Haderka; Martin Hamar; Jan Perina, Jr.

    2003-02-20T23:59:59.000Z

    A multichannel detector has been constructed using a single avalanche photodiode and a fiber-loop delay line. Detection probabilities of the channels can be set using a variable-ratio coupler. The performance of the detector is demonstrated on its capability to distinguish multi-photon states (containing two or more photons) from the one-photon state and the vacuum state.

  1. THE DIGITAL SYSTEM ARTEMIS FOR REAL-TIME PROCESSING OF RADIO TRANSIENT EMISSIONS IN THE SOLAR CORONA

    E-Print Network [OSTI]

    Athens, University of

    THE DIGITAL SYSTEM ARTEMIS FOR REAL-TIME PROCESSING OF RADIO TRANSIENT EMISSIONS IN THE SOLAR); it is used to process and record the 120 channels of a multichannel solar radiospectrograph in the frequency 30-80 MHz and a two-dimensional multicor- relator interferometer at 75.5 MHz. The large quantity

  2. Development of a statistical procedure for detecting the number of signals in a radar measurement

    E-Print Network [OSTI]

    Adve, Raviraj

    Development of a statistical procedure for detecting the number of signals in a radar measurement P multichannel multipulse radar data. A unique aspect of the propo is that it predicts a confidence level number. Of concern is the development of a procedure for computing the number of signals in a measurement data vector

  3. IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 49, NO. 1, JANUARY 2001 91 A Deterministic Least-Squares Approach to

    E-Print Network [OSTI]

    Adve, Raviraj

    examples presented in this paper use measured data from the multichannel airborne radar measurements (MCARM can provide a confidence level of the processed results. The D3 method may also be used for mobile communications. Index Terms--Atmospheric interference, D3 approach, object detection, radar clutter, space

  4. Latitudinal gradients in sea ice and primary production determine Arctic seabird colony

    E-Print Network [OSTI]

    Laidre, Kristin L.

    will indirectly alter energy transfer through the pelagic food web and ultimately impact apex predators. We-based observations of sea ice concentration from the Nimbus-7 scanning multichannel microwave radiometer (SMMR, 1979 recession of high Arctic seasonal ice cover created a temporally predictable primary production bloom

  5. 2, 383397, 2008 Extreme surface melt

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    surface snowmelt over high elevations (above 2000 m) of the Greenland ice sheet during summer of 2007Pa atmospheric thick- ness, and the net surface energy flux, linked in turn to southerly airflow over the ice10 Scanning Multichannel Microwave Radiometer (SMMR, 1979­1987) and the Special Sensor Microwave/Imager (SSM

  6. Quantitative multiplex detection of pathogen biomarkers

    DOE Patents [OSTI]

    Mukundan, Harshini; Xie, Hongzhi; Swanson, Basil I; Martinez, Jennifer; Grace, Wynne K

    2014-10-14T23:59:59.000Z

    The present invention addresses the simultaneous detection and quantitative measurement of multiple biomolecules, e.g., pathogen biomarkers through either a sandwich assay approach or a lipid insertion approach. The invention can further employ a multichannel, structure with multi-sensor elements per channel.

  7. IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING, VOL. 12, NO. 6, NOVEMBER 2004 561 Speech Enhancement Based on the General Transfer

    E-Print Network [OSTI]

    Cohen, Israel

    , and Israel Cohen, Senior Member, IEEE Abstract--In speech enhancement applications microphone array on single-channel speech enhancers and making use of recently proposed algorithms concatenated to the beamformer output. The third is a multichannel speech enhancer which exploits noise-only components

  8. Quasi-Steady Manetoplasmadynamic Thruster Measured Performance Database

    E-Print Network [OSTI]

    Choueiri, Edgar

    that in which cathode erosion rates tend to be prohibitive. In the past few years, two approaches around, is the revival of interest[5] in alkali metal (specifically lithium) MPDTs with multi-channel cathodes gas-fed solid cathode MPDTs, have substantially low cathode erosion rates[6, 7] with the added benefit

  9. Quasi-Steady Magnetoplasmadynamic Thruster Performance E.Y. Choueiri

    E-Print Network [OSTI]

    Choueiri, Edgar

    programs. Second, the regime in which MPDTs start to become efficient is also that in which cathode erosion] in alkali metal (specifically lithium) MPDTs with multi-channel cathodes. These steady-state thrusters, have substantially lower cathode erosion rates[6, 7] with the added benefit of better performance

  10. reless Access A. Chockalingamt,WeipingXu, Michele ZOrzi, and LaurenceB. Milstein

    E-Print Network [OSTI]

    Chockalingam, A.

    under differentfading scenariosusing a unified metric, we define the energy eficiency of a protocol source are used for wireless communications,energy constraintsare likely to in- fluence the desigdchoice of media access protocols. In this pa- per, we analyze the energy efficiency of a multichannel wireless

  11. Realization of a 5-bit NMR Quantum Computer Using a New Molecular Architecture

    E-Print Network [OSTI]

    R. Marx; A. F. Fahmy; J. M. Myers; W. Bermel; S. J. Glaser

    1999-05-25T23:59:59.000Z

    We demonstrate a five-bit nuclear-magnetic-resonance quantum computer that distinguishes among various functions on four bits, making use of quantum parallelism. Its construction draws on the recognition of the sufficiency of linear coupling along a chain of nuclear spins, the synthesis of a suitably coupled molecule, and the use of a multi-channel spectrometer.

  12. Measurement of the half-life of (198)Au in a nonmetal: High-precision measurement shows no host-material dependence

    E-Print Network [OSTI]

    Goodwin, J. R.; Nica, N.; Iacob, V. E.; Dibidad, A.; Hardy, John C.

    2010-01-01T23:59:59.000Z

    ://www.ortec-online.com/Solutions/multichannel-analyzers. aspx]. [8] R. Jenkins, R. W. Gould, and D. Gedcke, Quantitative X-ray Spectrometry (Dekker, New York, 1981), p. 266. [9] D. Radford (private communication) [http://radware.phy. ornl.gov/main.html]. [10] R. Brun and F. Rademakers, Nucl. Instrum...

  13. Chin. J. Astron. Astrophys. Vol. 8 (2008), No. 6, 723731 (http://www.chjaa.org)

    E-Print Network [OSTI]

    Li, Hui

    2008-01-01T23:59:59.000Z

    of Astronomy and Astrophysics Properties of the He I 10830 °A Line in Solar Flares Qiu-Sheng Du and Hui Li Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China; duqs@pmo.ac.cn Received in nine selected solar flares, using spectral data obtained with the Multi-channel Infrared Solar

  14. The Physics of Chromospheric Plasmas ASP Conference Series, Vol. 368, 2007

    E-Print Network [OSTI]

    Li, Hui

    Dorotovic and Robert J. Rutten, eds. Spectroscopic Properties of Solar Flares in Different Lines Hui Li and Jianqi You Purple Mountain Observatory, Nanjing, China Abstract. Using the data from the Multi-channel Infrared Solar Spectro- graph (MISS) at Purple Mountain Observatory (PMO), we studied the spectro- scopic

  15. Electron, Photon, and Positron Scattering Dynamics of Complex Molecular Targets

    E-Print Network [OSTI]

    Carey, Ralph

    2012-07-16T23:59:59.000Z

    from ground state Cl2 and Pt in the 1S and 3D states in the multichannel configuration-interaction (MCCI) approximation originally developed for photoionization for scattering up to 10 eV. Photoionization cross sections and angular distributions...

  16. HUMAN BRAIN IMAGING AT 9.4 TESLA USING A COMBINATION OF TRAVELING WAVE EXCITATION WITH A 15-CHANNEL RECEIVE-ONLY ARRAY

    E-Print Network [OSTI]

    HUMAN BRAIN IMAGING AT 9.4 TESLA USING A COMBINATION OF TRAVELING WAVE EXCITATION WITH A 15-CHANNEL is a successful setup for routine human brain imaging at 7 Tesla. For reception, the use of multiple surface coils multichannel transmit coils. At 9.4 Tesla, however, the even shorter RF wavelength in tissue causes the B1

  17. Adaptive Blind Signal Processing--Neural Network Approaches

    E-Print Network [OSTI]

    Vialatte, François

    Adaptive Blind Signal Processing--Neural Network Approaches SHUN-ICHI AMARI, FELLOW, IEEE are presented for the problem of adaptive blind signal processing, especially instantaneous blind separation and multichannel blind deconvolution/equalization of independent source signals. We dis- cuss recent developments

  18. TO APPEAR IN JOURNAL OF COMMUNICATIONS AND NETWORKS, 1999 1 An Unsupervised Hybrid Network for Blind

    E-Print Network [OSTI]

    Cichocki, Andrzej

    for Blind Separation of Independent Non-Gaussian Source Signals in Multipath Environment Seungjin CHOI by a linear memoryless feedforward network) which is able to recover multiple source signals blindly. A simple criterion for multichannel blind deconvo- lution and an associated learning algorithm are presented

  19. TO APPEAR IN JOURNAL OF COMMUNICATIONS AND NETWORKS, 1999 1 An Unsupervised Hybrid Network for Blind

    E-Print Network [OSTI]

    Choi, Seungjin

    for Blind Separation of Independent Non­Gaussian Source Signals in Multipath Environment Seungjin CHOI source signals blindly. A simple criterion for multichannel blind deconvo­ lution and an associated performance of the proposed method. Keywords---Blind signal separation, Hebbian/anti­Hebbian learning

  20. Blind Source Recovery: Some Implementation and Performance Issues Khurram Waheed and Fathi M. Salam

    E-Print Network [OSTI]

    Salem, Fathi M.

    Blind Source Recovery: Some Implementation and Performance Issues Khurram Waheed and Fathi M. Salam of our proposed algorithms for Blind source Recovery based on constrained optimization using the state in various practical problems. 1: Introduction Blind Source Recovery (BSR), or Multi-channel Blind

  1. Blind Separation of Filtered Sources Using State-Space Approach

    E-Print Network [OSTI]

    Cichocki, Andrzej

    Blind Separation of Filtered Sources Using State-Space Approach Liqing Zhang and Andrzej Cichockiy to multichannel blind separation/generalized deconvolution, assuming that both mixing and demixing models are described by stable linear state-space sys- tems. We decompose the blind separation problem into two pro

  2. Filip Sroubek Curriculum Vitae B.S. (Computer Science) 1996, Czech Technical University, Dept. of Computer Science and

    E-Print Network [OSTI]

    Savicky, Petr

    , thesis: "Simulation and 3D Visualization of Atomic Collision Cascades", Czech Technical University, Dept. of Computer Science and Engineering, Prague, Czech Republic. · Ph.D. 2003, thesis: "Image Fusion via Multichannel Blind Deconvolution", supervisor: Prof. Jan Flusser, Charles University, School of Computer

  3. Bibliography [AB94] M. Alencar and I. Blake. The capacity for a discrete

    E-Print Network [OSTI]

    Verdú, Sergio

    , 1995. [AC97] S. Amari and J. Cardoso. Blind source separation­ semiparametric statistical approach­Spectrum communication systems. PhD thesis, University of Massachusetts, Amherst, Mass, Sept. 1996. [AD62] E. Arthurs. Moulines. Sub­ space blind identification of multichannel FIR with un­ known spatial covariance. IEEE

  4. ETH Zurich Distributed Computing Group Stephan HolzerETH Zurich Distributed Computing www.disco.ethz.ch Stephan Holzer -ETH Zrich

    E-Print Network [OSTI]

    ETH Zurich ­ Distributed Computing Group Stephan HolzerETH Zurich ­ Distributed Computing ­ www Wattenhofer - ETH Zürich Deterministic Multi-Channel Information Exchange #12;ETH Zurich ­ Distributed Problem: n:= # nodes k:= # information Have information Disseminate to all! ? #12;ETH Zurich ­ Distributed

  5. An Object-Based Audio Rendering System using Spatial Parameters

    E-Print Network [OSTI]

    Chang, Pao-Chi

    An Object-Based Audio Rendering System using Spatial Parameters Kuo-Lun Huang, Tai-Ming Chang rendering system, in which the audio signal of each object is distributed to multi-channel systems by spatial parameters. The operation of the rendering system is based on the sound localization theories

  6. Developments in enzyme immobilization and near-infrared Raman spectroscopy with downstream renewable energy applications

    SciTech Connect (OSTI)

    Lupoi, Jason [Ames Laboratory

    2012-08-27T23:59:59.000Z

    This dissertation focuses on techniques for (1) increasing ethanol yields from saccharification and fermentation of cellulose using immobilized cellulase, and (2) the characterization and classification of lignocellulosic feedstocks, and quantification of useful parameters such as the syringyl/guaiacyl (S/G) lignin monomer content using 1064 nm dispersive multichannel Raman spectroscopy and chemometrics.

  7. Neural Networks 23 (2010) 685697 Contents lists available at ScienceDirect

    E-Print Network [OSTI]

    Arleo, Angelo

    Neural Networks 23 (2010) 685­697 Contents lists available at ScienceDirect Neural Networks journal Received in revised form 29 March 2010 Accepted 5 May 2010 Keywords: Micro-electrode array Cell culture Batch processing Connectivity a b s t r a c t Multi-channel acquisition from neuronal networks, either

  8. Impact of Secondary MAC Cooperation on Spectrum Sharing in Cognitive Radio Networks

    E-Print Network [OSTI]

    Simeone, Osvaldo

    Impact of Secondary MAC Cooperation on Spectrum Sharing in Cognitive Radio Networks Tariq Elkourdi and opportunistic spectrum access, and more generally cognitive radio, were introduced as possible solutions (see, e of secondary MAC coop- eration on the sum-throughput of multichannel cognitive radio networks is studied

  9. Radiative Exchange Between Square Parallel Channels in a Concentric Monolith Structure

    E-Print Network [OSTI]

    Bath, University of

    Mean gas heat capacity (J mol \\Gamma1 K \\Gamma1 ) E Radiation view factor (multichannel model) F; d combustor for a gas turbine engine, where temperatures may be as high as 1550 K [3] and radiative exchange an important role. Initially, this paper derives the system of integral equations that is used to model radia

  10. Tensor-based Detection of T Wave Alternans in Multilead ECG Signals G Goovaerts1,2

    E-Print Network [OSTI]

    Tensor-based Detection of T Wave Alternans in Multilead ECG Signals G Goovaerts1,2 , C Varon1,2 , B for the detection of T wave alternans in multichannel ECG signals is introduced. The use of tensors robust. To construct a 3D tensor from a 2D ECG signal, the T wave is first roughly segmented

  11. What ICA Provides for ECG Processing: Application to Noninvasive Fetal ECG Extraction

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    What ICA Provides for ECG Processing: Application to Noninvasive Fetal ECG Extraction Reza Sameni1 (ICA) has been used for the analysis of multi-channel ECG recordings. However most of these works have of the heart and the ECG dimensionality are studied from the source separation viewpoint. Based on this study

  12. ROBUST 3-WAY TENSOR DECOMPOSITION AND EXTENDED STATE KALMAN FILTERING TO EXTRACT FETAL ECG

    E-Print Network [OSTI]

    Boyer, Edmond

    ROBUST 3-WAY TENSOR DECOMPOSITION AND EXTENDED STATE KALMAN FILTERING TO EXTRACT FETAL ECG Mohammad ABSTRACT This paper addresses the problem of fetal electrocardiogram (ECG) extraction from multichannel that are robust to outliers are proposed and used to better track weak traces of the fetal ECG. Then, the state

  13. System and method for assaying a radionuclide

    DOE Patents [OSTI]

    Cadieux, James R; King, III, George S; Fugate, Glenn A

    2014-12-23T23:59:59.000Z

    A system for assaying a radionuclide includes a liquid scintillation detector, an analyzer connected to the liquid scintillation detector, and a delay circuit connected to the analyzer. A gamma detector and a multi-channel analyzer are connected to the delay circuit and the gamma detector. The multi-channel analyzer produces a signal reflective of the radionuclide in the sample. A method for assaying a radionuclide includes selecting a sample, detecting alpha or beta emissions from the sample with a liquid scintillation detector, producing a first signal reflective of the alpha or beta emissions, and delaying the first signal a predetermined time. The method further includes detecting gamma emissions from the sample, producing a second signal reflective of the gamma emissions, and combining the delayed first signal with the second signal to produce a third signal reflective of the radionuclide.

  14. Pulser injection with subsequent removal for gamma-ray spectrometry

    DOE Patents [OSTI]

    Hartwell, Jack K. (Idaho Falls, ID); Goodwin, Scott G. (Idaho Falls, ID); Johnson, Larry O. (Blackfoot, ID); Killian, E. Wayne (Idahoe Falls, ID)

    1990-01-01T23:59:59.000Z

    An improved system for gamma-ray spectroscopy characterized by an interface module that controls the injection of electronic pulses as well as separation logic that enables storage of pulser events in a region of the spectrum of a multichannel analyzer distinct from the region reserved for storage of gamma-ray events. The module accomplishes this by tagging pulser events (high or low) injected into the amplification circuitry, adding an offset to the events so identified at the time the events are at the output of the analog to digital converter, and storing such events in the upper portion of the spectrum stored in the multichannel analyzer. The module can be adapted for use with existing gamma-ray spectroscopy equipment to provide for automatic analyses of radioisotopes.

  15. Handheld CZT radiation detector

    DOE Patents [OSTI]

    Murray, William S.; Butterfield, Kenneth B.; Baird, William

    2004-08-24T23:59:59.000Z

    A handheld CZT radiation detector having a CZT gamma-ray sensor, a multichannel analyzer, a fuzzy-logic component, and a display component is disclosed. The CZT gamma-ray sensor may be a coplanar grid CZT gamma-ray sensor, which provides high-quality gamma-ray analysis at a wide range of operating temperatures. The multichannel analyzer categorizes pulses produce by the CZT gamma-ray sensor into channels (discrete energy levels), resulting in pulse height data. The fuzzy-logic component analyzes the pulse height data and produces a ranked listing of radioisotopes. The fuzzy-logic component is flexible and well-suited to in-field analysis of radioisotopes. The display component may be a personal data assistant, which provides a user-friendly method of interacting with the detector. In addition, the radiation detector may be equipped with a neutron sensor to provide an enhanced mechanism of sensing radioactive materials.

  16. A simple technique for gamma ray and cosmic ray spectroscopy using plastic scintillator

    E-Print Network [OSTI]

    Akhilesh P. Nandan; Sharmili Rudra; Himangshu Neog; S. Biswas; S. Mahapatra; B. Mohanty; P. K. Samal

    2015-04-10T23:59:59.000Z

    A new and simple technique has been developed using plastic scintillator detectors for gamma ray and cosmic ray spectroscopy without single channel analyzer (SCA) or multichannel analyzer (MCA). In these experiments only a leading edge discriminator (LED) and NIM scalers have been used. Energy calibration of gamma spectra in plastic scintillators has been done using Co$^{60}$ and Cs$^{137}$ sources. The details experimental technique, analysis procedure and experimental results has been presented in this article.

  17. Raman activity in synchronously dividing bacteria

    SciTech Connect (OSTI)

    Layne, S.P.

    1985-01-01T23:59:59.000Z

    Using a spectrometer equipped with an optical-multichannel analyzer as the detector (OMA), we have observed the Stokes laser-Raman spectra of metabolically active Escherichia coli and Bacillus megaterium from 100 - 2100 cm/sup -1/. After lengthy investigation, no Raman lines attributable to the metabolic process nor the cells themselves were found. Previous Raman spectra of active bacteria cannot be used to support nonlinear theories in biology. 34 refs., 9 figs.

  18. A simple technique for gamma ray and cosmic ray spectroscopy using plastic scintillator

    E-Print Network [OSTI]

    Akhilesh P. Nandan; Sharmili Rudra; Himangshu Neog; S. Biswas; S. Mahapatra; B. Mohanty; P. K. Samal

    2014-12-30T23:59:59.000Z

    A new and simple technique has been developed using plastic scintillator detectors for gamma ray and cosmic ray spectroscopy without single channel analyzer (SCA) or multichannel analyzer (MCA). In these experiments only a leading edge discriminator (LED) and NIM scalers have been used. Energy calibration of gamma spectra in plastic scintillators has been done using Co$^{60}$ and Cs$^{137}$ sources. The details experimental technique, analysis procedure and experimental results has been presented in this article.

  19. Methods for characterizing, classifying, and identifying unknowns in samples

    DOE Patents [OSTI]

    Grate, Jay W [West Richland, WA; Wise, Barry M [Manson, WA

    2002-01-01T23:59:59.000Z

    Disclosed is a method for taking the data generated from an array of responses from a multichannel instrument, and determining the characteristics of a chemical in the sample without the necessity of calibrating or training the instrument with known samples containing the same chemical. The characteristics determined by the method are then used to classify and identify the chemical in the sample. The method can also be used to quantify the concentration of the chemical in the sample.

  20. Cronograma Seminario Topicos em Reconstruc~ao de Imagens (MT859)

    E-Print Network [OSTI]

    De Pierro, Alvaro Rodolfo

    of PET data. 7) 27-04 (TBA) Specific assays for PET (FDG, etc). 1 #12;8) 04-05 Fabiana : Blind estimation from Fourier coefficients: Thesis. 11) 25-05 Eduardo: Estimating dynamic PET curves. 12) 01-06 Multichannel blind deconvolution: an introduction. 13) 08-06 TBA 14) 15-06 TBA 15) 22-06 TBA 16) 29-06 TBA

  1. Analysis of radium-226 concentrations in environmental samples using a Ge(Li) detector

    E-Print Network [OSTI]

    Gilchrist, Roger L

    1977-01-01T23:59:59.000Z

    Samples . . 27 Comparison of Average Efficiencies of Covered Planchets and Covered Planchets Plus Activated Carbon at Trapping Radon Emanating from Water Samples 31 Average Efficiency Versus Number of Saran Wrap Layers Using an Aluminum Planchet..., for purposes of this study, the system was wired to function as a basic 4096 multichannel analyzer, with the deviation from gaussian shape at one-tenth of the peak maximum being approximately 3/. Although the ci rcuitry was able to maintain a resolution of 3...

  2. Mass spectrometer calibration of Cosmic Dust Analyzer Thomas J. Ahrens, Satish C. Gupta,1

    E-Print Network [OSTI]

    Stewart, Sarah T.

    . Using aluminum alloy as a test sample, each pulse produces a charge of $4.6 pC (mostly Al+1 ), whereas of the instrument. Particles impact a Rh target plate at velocities of 1-100 km/s and produce some 10Ã?8 to 10Ã?5 in the CDA geometry. Employing a multichannel plate detector in this MS yields for Al-Mg-Cu alloy

  3. Highly excited {Sigma}{sup -} states of molecular hydrogen

    SciTech Connect (OSTI)

    Argoubi, F.; Bezzaouia, S.; Oueslati, H. [LSAMA Department of Physics, Faculty of Science of Tunis, University of Tunis El Manar, 2092 Tunis (Tunisia); Telmini, M. [LSAMA Department of Physics, Faculty of Science of Tunis, University of Tunis El Manar, 2092 Tunis (Tunisia); National Centre for Nuclear Science and Technology, Sidi Thabet Technopark 2020 (Tunisia); Jungen, Ch. [Laboratoire Aime Cotton du CNRS, Universite de Paris-Sud, F-91405 Orsay (France)

    2011-05-15T23:59:59.000Z

    We report calculations of H{sub 2} {Sigma}{sup -} states using a variational R-matrix approach combined with multichannel quantum defect theory. Several Rydberg series converging to the 2p{pi} state of the H{sub 2}{sup +} ion core are established and their mutual channel interactions characterized. The influence of the external electron on the chemical bond is found to be particularly strong in these electronically and chemically weakly bound states.

  4. Ultrarelativistic laser systems based on coherent beam combining

    SciTech Connect (OSTI)

    Bagayev, S. N.; Trunov, V. I.; Pestryakov, E. V.; Frolov, S. A.; Leschenko, V. E.; Kirpichnikov, A. V.; Kokh, A. E.; Petrov, V. V.; Vasiliev, V. A. [Institute of Laser Physics SB RAS, Ac. Lavrentyev's prosp., 13/3, Novosibirsk (Russian Federation); Institute of Geology and Mineralogy SB RAS, Ac. Koptug's prosp., 3, Novosibirsk (Russian Federation); Institute of Laser Physics SB RAS, Ac. Lavrentyev's prosp., 13/3, Novosibirsk (Russian Federation)

    2012-07-11T23:59:59.000Z

    Conceptual design for femtosecond laser system of exawatt class, based on multi-channel amplifier and coherent field combining of petawatt amplifier channels with phase-frequency controlled radiation by optical clock are discussed. The scheme of start petawatt level few-cycle laser system with stable phase-frequency parameters determinated by the accuracy of the optical standard based on parametric amplification in big-size LBO crystals pumped by picosecond pulses is analyzed.

  5. What is Geovisualization? Why is the work needed?

    E-Print Network [OSTI]

    Wright, Dawn Jeannine

    #12;Research Frontiers... Geocomputation and Database Semantics #12;Research Frontiers... Uncertainty History ILM 1982 #12;A Brief History ILM 1983 #12;A Brief History JPL 1987 #12;A Brief History Terra

  6. Ultrahigh heat flux plasma-facing components for magnetic fusion energy

    SciTech Connect (OSTI)

    Youchison, D. L.

    2012-03-01T23:59:59.000Z

    Sandia and Ultramet partnered to design and test refractory metal plasma-facing components and heat exchangers for advanced, high-temperature power conversion systems. These devices consisted of high-temperature helium-to-helium and lithium-to-helium heat exchangers that operate with high efficiency due to the porous foam inserts used in the gas stream, which promote turbulence and provide extended surface area for enhanced convection. Single- and multi-channel helium panels and the Li-He heat exchanger were fabricated from either pure molybdenum, TZM, or tungsten. The design was carried out through an Ultramet subcontractor. The flow path was carefully tailored to minimize the pressure drop while maximizing the heat transfer. The single- and multi-channel helium panels were tested at Sandia's PMTF using an electron beam system and the closed helium flow loop. In 2006, a single-channel tungsten tube was successfully tested to an average heat flux of 14 MW/m{sup 2} with a localized peak of 22 MW/m{sup 2} along the axial centerline at the outer radius. Under this CRADA, multiple square-channel molybdenum components were successfully tested to heat flux levels approaching 8.5 MW/m{sup 2}. The three multi-channel prototypes experienced mechanical failure due to issues related to the design of the large unsupported span of the heated faceplates in combination with prototype material and braze selection. The Li-He heat exchanger was both designed and partially tested at the PMTF for helium and lithium flow.

  7. Initial Results from the Lost Alpha Diagnostics on Joint European Torus

    SciTech Connect (OSTI)

    Darrow, Doug; Cecil, Ed; Ellis, Bob; Fullard, Keith; Hill, Ken; Horton, Alan; Kiptily, Vasily; Pedrick, Les; Reich, Matthias

    2007-07-25T23:59:59.000Z

    Two devices have been installed in the Joint European Torus (JET) vacuum vessel near the plasma boundary to investigate the loss of energetic ions and fusion products in general and alpha particles in particular during the upcoming JET experiments. These devices are (i) a set of multichannel thin foil Faraday collectors, and (ii) a well collimated scintillator which is optically connected to a charge-coupled device. Initial results, including the radial energy and poloidal dependence of lost ions from hydrogen and deuterium plasmas during the 2005–06 JET restart campaign, will be presented.

  8. Calculations of partial cross sections for photofragmentation processes using complex absorbing potentials

    SciTech Connect (OSTI)

    Grozdanov, T.P.; Andric, L.; McCarroll, R. [Institute of Physics, P.O. Box 57, 11001 Belgrade (Serbia and Montenegro); Laboratoire de Chimie Physique-Matiere et Rayonnement, UMR 7614 du CNRS, Universite Pierre et Marie Curie, 75231-Paris Cedex 05 (France)

    2006-03-07T23:59:59.000Z

    We investigate the use of complex absorbing potentials for the calculation of partial cross sections in multichannel photofragmentation processes. An exactly solvable, coupled-two-channel problem involving square-well potentials is used to compare the performance of various types of absorbing potentials. Special emphasis is given to the near-threshold regions and the conditions under which the numerical results are able to reproduce the Wigner threshold laws. It was found that singular, transmission-free absorbing potentials perform better than those of power or polynomial form.

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

    SciTech Connect (OSTI)

    Ni, P.A.; Kulish, M.I.; Mintsev, V.; Nikolaev, D.N.; Ternovoi, V.Ya.; Hoffmann, D.H.H.; Udrea, S.; Tahir, N.A.; Varentsov, D.; Hug, A.

    2008-12-01T23:59:59.000Z

    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.

  10. Progress in development of the neutron profile monitor for the large helical device

    SciTech Connect (OSTI)

    Ogawa, K., E-mail: ogawa.kunihiro@lhd.nifs.ac.jp; Kobuchi, T. [National Institute for Fusion Science, Toki 509-5292 (Japan); Isobe, M.; Takeiri, Y. [National Institute for Fusion Science, Toki 509-5292 (Japan); The Graduate University for Advanced Studies (SOKENDAI), Toki 509-5292 (Japan); Takada, E.; Uchida, Y. [National Institute of Technology, Toyama College, 13 Hongo-machi, Toyama 939-8630 (Japan); Ochiai, K. [Fusion Research and Development Directorate, Japan Atomic Energy Agency, Tokai, Naka, Ibaraki 319-1195 (Japan); Tomita, H.; Uritani, A. [Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 (Japan)

    2014-11-15T23:59:59.000Z

    The neutron profile monitor stably operated at a high-count-rate for deuterium operations in the Large Helical Device has been developed to enhance the research on the fast-ion confinement. It is composed of a multichannel collimator, scintillation-detectors, and a field programmable gate array circuit. The entire neutron detector system was tested using an accelerator-based neutron generator. This system stably acquires the pulse data without any data loss at high-count-rate conditions up to 8 × 10{sup 5} counts per second.

  11. Aharonov-Casher and spin Hall effects in mesoscopic ring structures with strong spin-orbit interaction RID A-1315-2011 RID B-3617-2008

    E-Print Network [OSTI]

    Borunda, M. F.; Liu, Xin; Kovalev, Alexey A.; Liu, Xiong-Jun; Jungwirth, T.; Sinova, Jairo.

    2008-01-01T23:59:59.000Z

    at certain values of the SO interaction and the same does not hold in the multichannel devices.14 In addition, Souma and Nikoli?15 calculated the spin Hall conductance of ring struc- tures and found that the spin Hall conductance is also modu- lated... and due to the subtleties introduced by the SO interactions, it does not suffice to discard the derivatives in the radial direction and set r=r0 in the 2D Hamiltonian. The single-particle 1D Hamiltonian is found by assuming that the confining potential...

  12. Personal continuous air monitor

    DOE Patents [OSTI]

    Morgan, Ronald G. (Los Alamos, NM); Salazar, Samuel A. (Albuquerque, NM)

    2000-01-01T23:59:59.000Z

    A personal continuous air monitor capable of giving immediate warning of the presence of radioactivity has a filter/detector head to be worn in the breathing zone of a user, containing a filter mounted adjacent to radiation detectors, and a preamplifier. The filter/detector head is connected to a belt pack to be worn at the waist or on the back of a user. The belt pack contains a signal processor, batteries, a multichannel analyzer, a logic circuit, and an alarm. An air pump also is provided in the belt pack for pulling air through the filter/detector head by way of an air tube.

  13. Cimel Sunphotometer (CSPHOT) Handbook

    SciTech Connect (OSTI)

    Gregory, L

    2011-01-17T23:59:59.000Z

    The Cimel sunphotometer (CSPHOT) is a multi-channel, automatic sun-and-sky scanning radiometer that measures the direct solar irradiance and sky radiance at the Earth’s surface. Measurements are taken at pre-determined discrete wavelengths in the visible and near-IR parts of the spectrum to determine atmospheric transmission and scattering properties. This instrument is weather-proof and requires little maintenance during periods of adverse weather conditions. It takes measurements only during daylight hours (sun above horizon).

  14. Coating thickness measurement by XRF in vacuum strip steel metallizing plants

    SciTech Connect (OSTI)

    Wenzel, D. [Von Ardenne Anlagentechnik GmbH, Dresden (Germany); Esche, H.J.; Pilz, J. [Amtec AnalysenmeBtechnik GmbH, Leipzig (Germany)

    1994-12-31T23:59:59.000Z

    Devised for use in vacuum equipment of PVD strip steel coaters is a multichannel counting technique for the continuous XRF measurement of the coating thickness. This XRF coating thickness gage is used in a batch-type strip steel coater. It measures the thickness of single-side, double-side and alloy coatings (element contents included). The new XRF method operates without etalons. It is also possible to measure adjacent elements in the periodic law of chemical elements without difficulty. With only minor deviations from the nominal value the new XRF measuring system allows to keep the coating thickness practically constant.

  15. The quantitative effect of pyrocatechol on spontaneous activity of the subesophageal ganglion of Periplaneta americana (L.

    E-Print Network [OSTI]

    Letbetter, William Dean

    1964-01-01T23:59:59.000Z

    20 Time (in minutes) 90 Figure III'. GRAPH SHOWING ACTIVITY PER MINUTE vs. TIME FOR A PYROCATECHOL CONCENTRATION OF 2 x 10" M. (Tope A, side 'I) 25 18 16 i4 Wash 2x10 M, 12 2x 10 5x10 M. Wash 10 Wash I x 10 M. Wash el inn 5x10 Wash 40... the multichannel anolyzer was used only os a large sealer and com- puter, It shows promise os a worthwhile tool in neurological work, The noise level of the tope recorder was so large that it contributed significantly to distorting the pulse*eights of recorded...

  16. Real-time computer analysis for nuclear material detection. Part 3. Nuclear instrumentation interface

    SciTech Connect (OSTI)

    Gosnell, T.B.; Wood, R.E.; Anzelon, G.A.

    1981-12-01T23:59:59.000Z

    An electronic interface between a Digital Equipment Corporation (DEC) LSI-11 microcomputer and a LeCroy Research Systems model 3001 qVt multichannel analyzer is described in detail. This interface provides for 16-bit parallel data transfer from the memory of the analyzer to the memory of the computer. An unusual feature of the interface is a provision that allows storage of counts of logic pulses (e.g., from radiation detector discriminators) in the first 16 channels of the analyzer's memory. A further provision allows use of a LeCroy printer and display interface that is designed specifically as a companion module to the qVt analyzer.

  17. VUV studies of molecular photofragmentation dynamics

    SciTech Connect (OSTI)

    White, M.G. [Brookhaven National Laboratory, Upton, NY (United States)

    1993-12-01T23:59:59.000Z

    State-resolved, photoion and photoelectron methods are used to study the neutral fragmentation and ionization dynamics of small molecules relevant to atmospheric and combustion chemistry. Photodissociation and ionization are initiated by coherent VUV radiation and the fragmentation dynamics are extracted from measurements of product rovibronic state distributions, kinetic energies and angular distributions. The general aim of these studies is to investigate the multichannel interactions between the electronic and nuclear motions which determine the evolution of the photoexcited {open_quotes}complex{close_quotes} into the observed asymptotic channels.

  18. Stored-Ion Collisional Relaxation to Equilibrium

    E-Print Network [OSTI]

    Church, David A.

    1988-01-01T23:59:59.000Z

    using a chart recorder, an oscilloscope, or a multichannel analyzer, as appropriate. About n =1.5 X 10' hot ions initially produced in the trap were observed to cool from 1.2X 10 K to 4.3 X 10'K:?T? in=50 s via dissipation of random motional en... as for regular articles is followed, and page proofs are sent to authors. Stored-ion collisional relaxation to equihbrium D. A. Church Physics Department, Texas AkM Uniuersity, College Station, Texas 77843A242 (Received 10 August 1987) The rate of energy...

  19. The Cold Dark Matter Search test stand warm electronics card

    SciTech Connect (OSTI)

    Hines, Bruce; /Colorado U., Denver; Hansen, Sten; /Fermilab; Huber, Martin; /Colorado U., Denver; Kiper, Terry; /Fermilab; Rau, Wolfgang; /Queen's U., Kingston; Saab, Tarek; /Florida U.; Seitz, Dennis; Sundqvist, Kyle; /UC, Berkeley; Mandic, Vuk; /Minnesota U.

    2010-11-01T23:59:59.000Z

    A card which does the signal processing for four SQUID amplifiers and two charge sensitive channels is described. The card performs the same functions as is presently done with two custom 9U x 280mm Eurocard modules, a commercial multi-channel VME digitizer, a PCI to GPIB interface, a PCI to VME interface and a custom built linear power supply. By integrating these functions onto a single card and using the power over Ethernet standard, the infrastructure requirements for instrumenting a Cold Dark Matter Search (CDMS) detector test stand are significantly reduced.

  20. Positron lifetime spectrometer using a DC positron beam

    DOE Patents [OSTI]

    Xu, Jun; Moxom, Jeremy

    2003-10-21T23:59:59.000Z

    An entrance grid is positioned in the incident beam path of a DC beam positron lifetime spectrometer. The electrical potential difference between the sample and the entrance grid provides simultaneous acceleration of both the primary positrons and the secondary electrons. The result is a reduction in the time spread induced by the energy distribution of the secondary electrons. In addition, the sample, sample holder, entrance grid, and entrance face of the multichannel plate electron detector assembly are made parallel to each other, and are arranged at a tilt angle to the axis of the positron beam to effectively separate the path of the secondary electrons from the path of the incident positrons.

  1. Comparing partial-wave amplitude parametrization with dynamical models of meson-nucleon scattering

    E-Print Network [OSTI]

    Mark W. Paris; Ron L. Workman

    2011-02-28T23:59:59.000Z

    Relationships between partial-wave amplitude parametrizations, in particular the Chew-Mandelstam approach, and dynamical coupled-channel models are established and investigated. A bare pole corresponding to the Delta(1232) resonance, found in a recent dynamical-model fit to pion- and omega-meson production reactions, compares closely to one found in a unitary multichannel partial-wave amplitude parametrization of SAID. The model dependence of the bare pole precludes a direct connection between the approaches but is suggestive that the dynamical description and the phenomenological parametrization are closely related.

  2. Method of pedestal and common-mode noise correction for switched-capacitor analog memories

    DOE Patents [OSTI]

    Britton, C.L.

    1996-12-31T23:59:59.000Z

    A method and apparatus are disclosed for correcting common-mode noise and pedestal noise in a multichannel array of switched-capacitor analog memories wherein each analog memory is connected to an associated analog-to-digital converter. The apparatus comprises a single differential element in two different embodiments. In a first embodiment, the differential element is a reference analog memory connected to a buffer. In the second embodiment, the differential element is a reference analog memory connected to a reference analog-to-digital connected to an array of digital summing circuits. 4 figs.

  3. THE HEBREW UNIVERSITY OF JERUSALEM: FOR THE WORLD THE PRESIDENT'S REPORT 2005/2006

    E-Print Network [OSTI]

    Anat, Maril,

    COSTA RICA KAZAKHSTAN CAMEROON SURINAME ECUADOR CYPRUS BURKINA FASO #12;A NOBEL FOR JERUSALEM PROFESSOR

  4. High-Throughput Methodology for Discovery of Metal-Organic Frameworks with a High

    E-Print Network [OSTI]

    of California, Berkeley Lily Ackerman and Thomas R. Boussie Symyx Technologies, Inc. #12;A Tetrazolate

  5. UNIVERSITE DE TOULON ET DU VAR U.F.R. SCIENCES ET TECHNIQUES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    2004 #12;A mes parents Mohamed Ahamed Charif & Sitti Chaharizzad Bent Said Djaffar, mes soeurs Sarah

  6. Proceedings of the Conference on

    E-Print Network [OSTI]

    Education 146 David Stricker, University of Minnesota #12;A GLIMPSE OF THE FUTURE Theodore Lewis Professor

  7. COMMUNITY CHOICE AGGREGATION PILOT PROJECT

    E-Print Network [OSTI]

    ........................................................................................11 3. Energy Efficiency Impacts..........................................................................................11 III. Organizational Structure........................................................................................................12 A. Organizational Overview

  8. Combustion kinetics and reaction pathways

    SciTech Connect (OSTI)

    Klemm, R.B.; Sutherland, J.W. [Brookhaven National Laboratory, Upton, NY (United States)

    1993-12-01T23:59:59.000Z

    This project is focused on the fundamental chemistry of combustion. The overall objectives are to determine rate constants for elementary reactions and to elucidate the pathways of multichannel reactions. A multitechnique approach that features three independent experiments provides unique capabilities in performing reliable kinetic measurements over an exceptionally wide range in temperature, 300 to 2500 K. Recent kinetic work has focused on experimental studies and theoretical calculations of the methane dissociation system (CH{sub 4} + Ar {yields} CH{sub 3} + H + Ar and H + CH{sub 4} {yields} CH{sub 3} + H{sub 2}). Additionally, a discharge flow-photoionization mass spectrometer (DF-PIMS) experiment is used to determine branching fractions for multichannel reactions and to measure ionization thresholds of free radicals. Thus, these photoionization experiments generate data that are relevant to both reaction pathways studies (reaction dynamics) and fundamental thermochemical research. Two distinct advantages of performing PIMS with high intensity, tunable vacuum ultraviolet light at the National Synchrotron Light Source are high detection sensitivity and exceptional selectivity in monitoring radical species.

  9. Electronic spin-flipping collisions of hydrogen atoms

    SciTech Connect (OSTI)

    Zygelman, B. [Department of Physics and Astronomy, University of Nevada, Las Vegas, Las Vegas, Nevada 89154 (United States)

    2010-03-15T23:59:59.000Z

    We present a unified multichannel approach to calculate electron spin-exchange and spin-flipping transition cross sections for collisions of H with H, H with T, and T with T. We use the theory to calculate the hyperfine quenching cross sections for collision energies that range from 1 mK to thermal temperatures. We show that spin-flipping transitions are induced by the splitting of the b {sup 3{Sigma}}{sub u} Born-Oppenheimer potential via the long-range magnetic interactions among electrons. We find that the spin-flipping cross sections in the tritium dimer are about a magnitude larger than that predicted by mass scaling the H-H cross sections. For the former, we show that the spin-exchange cross sections are several magnitudes larger, at cold temperatures, than that of the hydrogen system. We compare the results of the multichannel approach with those obtained using approximate methods such as the degenerate internal-state, the elastic, and Born approximations and discuss their respective range of validity.

  10. Noise Reduction with Microphone Arrays for Speaker Identification

    SciTech Connect (OSTI)

    Cohen, Z

    2011-12-22T23:59:59.000Z

    Reducing acoustic noise in audio recordings is an ongoing problem that plagues many applications. This noise is hard to reduce because of interfering sources and non-stationary behavior of the overall background noise. Many single channel noise reduction algorithms exist but are limited in that the more the noise is reduced; the more the signal of interest is distorted due to the fact that the signal and noise overlap in frequency. Specifically acoustic background noise causes problems in the area of speaker identification. Recording a speaker in the presence of acoustic noise ultimately limits the performance and confidence of speaker identification algorithms. In situations where it is impossible to control the environment where the speech sample is taken, noise reduction filtering algorithms need to be developed to clean the recorded speech of background noise. Because single channel noise reduction algorithms would distort the speech signal, the overall challenge of this project was to see if spatial information provided by microphone arrays could be exploited to aid in speaker identification. The goals are: (1) Test the feasibility of using microphone arrays to reduce background noise in speech recordings; (2) Characterize and compare different multichannel noise reduction algorithms; (3) Provide recommendations for using these multichannel algorithms; and (4) Ultimately answer the question - Can the use of microphone arrays aid in speaker identification?

  11. The IMCA: A field instrument for uranium enrichment measurements

    SciTech Connect (OSTI)

    Gardner, G.H.; Koskelo, M.; Moeslinger, M. [Canberra Industries, Meriden, CT (United States); Mayer, R.L. II; McGinnis, B.R. [Lockheed Martin Utility Services, Piketon, OH (United States). Portsmouth Gaseous Diffusion Plant; Wishard, B. [International Atomic Energy Agency, Vienna (Austria)

    1996-12-31T23:59:59.000Z

    The IMCA (Inspection Multi-Channel Analyzer) is a portable gamma-ray spectrometer designed to measure the enrichment of uranium either in a laboratory or in the field. The IMCA consists of a Canberra InSpector Multi-Channel Analyzer, sodium iodide or a planar germanium detector, and special application software. The system possesses a high degree of automation. The IMCA uses the uranium enrichment meter principle, and is designed to meet the International Atomic Energy Agency (IAEA) requirements for the verification of enriched uranium materials. The IMCA is available with MGA plutonium isotopic analysis software or MGAU uranium analysis software as well. In this paper, the authors present a detailed description of the hardware and software of the IMCA system, as well as results from preliminary measurements testing compliance of IMCA with IAEA requirements using uranium standards and UF6 cylinders. Measurements performed on UF6 cylinders in the field under variable environmental conditions (temperatures ranging from 0 to 35 C) have shown that good results can be achieved. The enrichment of UF6 contained in the cylinder is determined by using calibration constants generated from an instrument calibration, using traceable uranium oxide standards, performed in the laboratory under controlled environmental conditions. The IMCA software is designed to make the necessary matrix and container corrections to ensure that accurate results are achieved in the field.

  12. Methods for improved forewarning of critical events across multiple data channels

    DOE Patents [OSTI]

    Hively, Lee M [Philadelphia, TN

    2007-04-24T23:59:59.000Z

    This disclosed invention concerns improvements in forewarning of critical events via phase-space dissimilarity analysis of data from mechanical devices, electrical devices, biomedical data, and other physical processes. First, a single channel of process-indicative data is selected that can be used in place of multiple data channels without sacrificing consistent forewarning of critical events. Second, the method discards data of inadequate quality via statistical analysis of the raw data, because the analysis of poor quality data always yields inferior results. Third, two separate filtering operations are used in sequence to remove both high-frequency and low-frequency artifacts using a zero-phase quadratic filter. Fourth, the method constructs phase-space dissimilarity measures (PSDM) by combining of multi-channel time-serial data into a multi-channel time-delay phase-space reconstruction. Fifth, the method uses a composite measure of dissimilarity (C.sub.i) to provide a forewarning of failure and an indicator of failure onset.

  13. Model-based Processing of Microcantilever Sensor Arrays

    SciTech Connect (OSTI)

    Tringe, J W; Clague, D S; Candy, J V; Sinensky, A K; Lee, C L; Rudd, R E; Burnham, A K

    2005-04-27T23:59:59.000Z

    We have developed a model-based processor (MBP) for a microcantilever-array sensor to detect target species in solution. We perform a proof-of-concept experiment, fit model parameters to the measured data and use them to develop a Gauss-Markov simulation. We then investigate two cases of interest, averaged deflection data and multi-channel data. For this evaluation we extract model parameters via a model-based estimation, perform a Gauss-Markov simulation, design the optimal MBP and apply it to measured experimental data. The performance of the MBP in the multi-channel case is evaluated by comparison to a ''smoother'' (averager) typically used for microcantilever signal analysis. It is shown that the MBP not only provides a significant gain ({approx} 80dB) in signal-to-noise ratio (SNR), but also consistently outperforms the smoother by 40-60 dB. Finally, we apply the processor to the smoothed experimental data and demonstrate its capability for chemical detection. The MBP performs quite well, apart from a correctable systematic bias error.

  14. p-wave optical Feshbach resonances in {sup 171}Yb

    SciTech Connect (OSTI)

    Goyal, Krittika; Deutsch, Ivan [Center for Quantum Information and Control, University of New Mexico, Albuquerque, New Mexico 87131 (United States); Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131 (United States); Reichenbach, Iris [Max Planck Institute for the Physics of Complex Systems, Noethnitzer Strasse 38, D-01187 Dresden (Germany)

    2010-12-15T23:59:59.000Z

    We study the use of an optical Feshbach resonance to modify the p-wave interaction between ultracold polarized {sup 171}Yb spin-1/2 fermions. A laser exciting two colliding atoms to the {sup 1}S{sub 0}+{sup 3}P{sub 1} channel can be detuned near a purely-long-range excited molecular bound state. Such an exotic molecule has an inner turning point far from the chemical binding region, and thus, three-body recombination in the Feshbach resonance will be highly suppressed in contrast to that typically seen in a ground-state p-wave magnetic Feshbach resonance. We calculate the excited molecular bound-state spectrum using a multichannel integration of the Schroedinger equation, including an external perturbation by a magnetic field. From the multichannel wave functions, we calculate the Feshbach resonance properties, including the modification of the elastic p-wave scattering volume and inelastic spontaneous scattering rate. The use of magnetic fields and selection rules for polarized light yields a highly controllable system. We apply this control to propose a toy model for three-color superfluidity in an optical lattice for spin-polarized {sup 171}Yb, where the three colors correspond to the three spatial orbitals of the first excited p band. We calculate the conditions under which tunneling and on-site interactions are comparable, at which point quantum critical behavior is possible.

  15. E-Print Network 3.0 - ao benomyl por Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    FINEP e IBM BRASIL, por seu apoio ao... , especialmente ao Romildo, 12;a K atia e ao Luiz Velho. 12;A toda minha fam lia, por seus ininterruptos apoios... e ... Source:...

  16. E-Print Network 3.0 - ao entalhe por Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    FINEP e IBM BRASIL, por seu apoio ao... , especialmente ao Romildo, 12;a K atia e ao Luiz Velho. 12;A toda minha fam lia, por seus ininterruptos apoios... e ... Source:...

  17. E-Print Network 3.0 - ao parasitismo por Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    FINEP e IBM BRASIL, por seu apoio ao... , especialmente ao Romildo, 12;a K atia e ao Luiz Velho. 12;A toda minha fam lia, por seus ininterruptos apoios... e ... Source:...

  18. E-Print Network 3.0 - ao glifosato por Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    FINEP e IBM BRASIL, por seu apoio ao... , especialmente ao Romildo, 12;a K atia e ao Luiz Velho. 12;A toda minha fam lia, por seus ininterruptos apoios... e ... Source:...

  19. Dinosaur Paleobiology Geology 331

    E-Print Network [OSTI]

    Kammer, Thomas

    Horner, Montana State Univ. #12;Field Work in Montana #12;A dinosaur "drumstick" in its field jacket. #12

  20. Academic Resources The Florida State University

    E-Print Network [OSTI]

    Westcott Building Tallahassee, Florida 32306-1410 http://www.gradschool.fsu.edu #12;A MESSAGE FROM THE DEAN

  1. Kordylewski clouds: the observational object for the most ambitious.

    E-Print Network [OSTI]

    Mrozek, Tomasz

    of Sciences #12;A bit of history Tycho Brahe Johannes Kepler Tycho Brahe carried out extremely accurate visual

  2. Writing Effective One-Pagers Mary E. Caulfield

    E-Print Network [OSTI]

    , details can be missed." #12;A good thesis is the foundation of an effective one-pager. "Because the AECL

  3. Towards automatic cell identi cation in DIC microscopy , C.A. Glasbey2y

    E-Print Network [OSTI]

    Stone, J. V.

    1998. Journal of Microscopy, 192, 186-193. #12;a b c Figure 1: DIC microscope images: a Chlorella algal

  4. A Brief History of the Chemistry Department -Part II

    E-Print Network [OSTI]

    Kounaves, Samuel P.

    geniuses during the great #12;A brief history, continued porn poge I the world, among them -Barcelona

  5. Typical Generation Costs New generation must be continuously planned and built to

    E-Print Network [OSTI]

    McCalley, James D.

    . 12a: 2006 Electric Energy Production by Fuel Source #12;2 Fig. 12b: 2006 Electric Energy Production

  6. Incorporating PC's into AHA T. Delbruck 22.5.03

    E-Print Network [OSTI]

    Delbruck, Tobi

    . · The JAS platform provides infrastructure for ­ Messaging ­ Lifecycle control ­ Etc? #12;A cluster Light

  7. D E S I G N A N D F E A S I B I L I T Y O F P E E R -TO -P E E R M O B I L E

    E-Print Network [OSTI]

    Vellekoop, Michel

    . #12;A B S T R A C T Digital payment methods are becoming increasingly popular. The advent of Bitcoin

  8. Pay Grade Classification Pay Grade Ranges 1A Food Service Helper $14.21 -$15.47

    E-Print Network [OSTI]

    Equipment Operator II 11A CHP Mechanic/Operator CHP Operator/Mechanic Lab Tech III Maintenance Machinist 12A

  9. A Timing Requirements-Aware Scratchpad Memory Allocation Scheme for a Precision Timed Architecture

    E-Print Network [OSTI]

    , and the following companies: Agilent, Bosch, HSBC, Lockheed-Martin, National Instruments, and Toyota. #12;A Timing

  10. Unfolding and Finite Pre x for Nets with Read Arcs Walter Vogler

    E-Print Network [OSTI]

    Newcastle upon Tyne, University of

    `Halbordnungstesten'). y Partially supported by EPSRC (projects HADES and TIMBRE, GR/K70175/L28098) 1 #12;(a) (b

  11. Measurement of quasi-isentropic compressibility of helium and deuterium at pressures of 1500-2000 GPa

    SciTech Connect (OSTI)

    Mochalov, M. A., E-mail: postmaster@ifv.vniief.ru; Il'kaev, R. I. [Russian Federal Nuclear Center, All-Russia Institute of Experimental Physics (Russian Federation); Fortov, V. E. [Russian Academy of Sciences, Joint Institute for High Temperatures (Russian Federation); Mikhailov, A. L.; Makarov, Yu. M.; Arinin, V. A.; Blikov, A. O.; Baurin, A. Yu.; Komrakov, V. A.; Ogorodnikov, V. A.; Ryzhkov, A. V.; Pronin, E. A.; Yukhimchuk, A. A. [Russian Federal Nuclear Center, All-Russia Institute of Experimental Physics (Russian Federation)

    2012-10-15T23:59:59.000Z

    The quasi-isentropic compressibility of helium and deuterium plasmas at pressures of up to 1500-2000 GPa has been measured using devices with spherical geometry and an X-ray diagnostic complex comprising three betatrons and a multichannel imaging system with electro-optic gamma detectors. A deuterium density of 4.5 g/cm{sup 3} and a helium density of 3.8 g/cm{sup 3} have been obtained at pressures of 2210 and 1580 GPa, respectively. The internal energy of a deuterium plasma at the indicated pressure is about 1 MJ/cm{sup 3}, which is about 100 times greater than the specific energy of condensed chemical explosives. Analysis of the obtained data shows that the degree of helium ionization under the achieved plasma compression parameters is about 0.9.

  12. Robust and economical multi-sample, multi-wavelength UV/vis absorption and fluorescence detector for biological and chemical contamination

    E-Print Network [OSTI]

    Lu, Peter J; Macarthur, James B; Sims, Peter A; Ma, Hongshen; Slocum, Alexander H

    2012-01-01T23:59:59.000Z

    We present a portable multi-channel, multi-sample UV/vis absorption and fluorescence detection device, which has no moving parts, can operate wirelessly and on batteries, interfaces with smart mobile phones or tablets, and has the sensitivity of commercial instruments costing an order of magnitude more. We use UV absorption to measure the concentration of ethylene glycol in water solutions at all levels above those deemed unsafe by the United States Food and Drug Administration; in addition we use fluorescence to measure the concentration of d-glucose. Both wavelengths can be used concurrently to increase measurement robustness and increase detection sensitivity. Our small robust economical device can be deployed in the absence of laboratory infrastructure, and therefore may find applications immediately following natural disasters, and in more general deployment for much broader-based testing of food, agricultural and household products to prevent outbreaks of poisoning and disease.

  13. Design criteria for multi-layered scintillating fibre arrays with inclined columns

    E-Print Network [OSTI]

    P. Achenbach; L. Nungesser; J. Pochodzalla

    2008-02-29T23:59:59.000Z

    Multi-layered scintillating fibre arrays read-out are commonly used as high resolution charged particle hodoscopes. Fibres of a column along the geometrical trajectory of incident particles are typically grouped to one pixel of a multi-channel read-out device. In some applications the incident particles will cross the detection plane with large angles w.r.t. the normal to the layers. Then, the packing of the fibres needs to be adapted to the incident particles and the columns need to be inclined. In this paper possible fibre array geometries are shown, relevant design criteria for detectors are discussed, and the effect of diverging particles incident on fibre arrays was studied using a Monte Carlo simulation.

  14. Design of interferometer system for Keda Torus eXperiment using terahertz solid-state diode sources

    SciTech Connect (OSTI)

    Xie, Jinlin, E-mail: jlxie@ustc.edu.cn; Wang, Haibo; Li, Hong; Lan, Tao; Liu, Adi; Liu, Wandong; Yu, Changxuan [School of Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China); Ding, Weixing [School of Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China); University of California-Los Angeles, P. O. Box 957099, Los Angeles, California 90095-7099 (United States)

    2014-11-15T23:59:59.000Z

    A solid-state source based terahertz (THz) interferometer diagnostic system has been designed and characterized for the Keda Torus eXperiment (KTX). The THz interferometer utilizes the planar diodes based frequency multiplier (X48) to provide the probing beam at fixed frequency 0.650 THz, and local oscillator is provided by an independent solid-state diode source with tunable frequency (0.650 THz +/? 10 MHz). Both solid-state sources have approximately 1 mW power. The planar-diode mixers optimized for high sensitivity, ?750 mV/mW, are used in the heterodyne detection system, which permits multichannel interferometer on KTX with a low phase noise. A sensitivity of {sub min} = 4.5 × 10{sup 16} m{sup ?2} and a temporal resolution of 0.2 ?s have been achieved during the initial bench test.

  15. Low-noise, high-speed detector development for optical turbulence fluctuation measurements for NSTX

    SciTech Connect (OSTI)

    Schoenbeck, N. L.; Fonck, R. J.; McKee, G. R.; Smith, D.; Uzun-Kaymak, I. U.; Winz, G. [Department of Engineering Physics, University of Wisconsin-Madison, Wisconsin 53706 (United States); Ellington, S. D. [Space Science and Engineering Center, University of Wisconsin-Madison, Wisconsin 53706 (United States); Jaehnig, K. [Department of Astronomy, University of Wisconsin-Madison, Wisconsin 53706 (United States)

    2010-10-15T23:59:59.000Z

    A new beam emission spectroscopy (BES) diagnostic is under development. Photon-noise limited measurements of neutral beam emissions are achieved using photoconductive photodiodes with a novel frequency-compensated broadband preamplifier. The new BES system includes a next-generation preamplifier and upgraded optical coupling system. Notable features of the design are surface-mount components, minimized stray capacitance, a wide angular acceptance photodiode, a differential output line driver, reduced input capacitance, doubling of the frequency range, net reduced electronic noise, and elimination of the need for a cryogenic cooling system. The irreducible photon noise dominates the noise up to 800 kHz for a typical input power of 60 nW. This new assembly is being integrated into an upgraded multichannel optical detector assembly for a new BES system on the NSTX experiment.

  16. Response Time Measurements of the NIF DANTE XRD-31 X-Ray Diodes (Pre-print)

    SciTech Connect (OSTI)

    Don Pellinen and Michael Griffin

    2009-01-23T23:59:59.000Z

    The XRD-31 is a fast, windowless X-ray vacuum photodiode developed by EG&G. It is currently the primary fast X-ray detector used to diagnose the X-rays on NIF and OMEGA on the multichannel DANTE spectrometer. The XRD-31 has a dynamic range of less than 1e-12 amps to more than 10 amps. A technique is described to measure the impulse response of the diodes to a 150 fs pulse of 200 nm laser light and a method to calculate the “risetime” for a square pulse and compare it with the computed electron transit time from the photocathode to the anode. Measured response time for 5 XRD-31s assembled in early 2004 was 149.7 ps +-2.75 ps.

  17. Retrofit SCADA installation combines SCADA and process control functions

    SciTech Connect (OSTI)

    Moffitt, T.O. [Entergy Operations, Inc., St. Francisville, LA (United States)

    1995-09-01T23:59:59.000Z

    When Gulf States Utilities Company`s (now part of Entergy Operations, Inc.) River Bend Nuclear Plant, decided to add a closed cooling water system for the plant service water, a new SCADA system was required. Previously the normal service water system shared common cooling towers and flume with the plant`s circulating water system. Closing the system required a new cooling tower with pumps and heat exchangers to be constructed in a remote location. Existing equipment in the area was controlled via a multichannel tone SCADA system that did not have sufficient spare capacity for control of the new components. This paper will discuss how a new SCADA system was designed and installed, that also included process control. It will also address the operational experience to date.

  18. Temporal and Spatial Turbulent Spectra of MHD Plasma and an Observation of Variance Anisotropy

    E-Print Network [OSTI]

    Schaffner, D A; Lukin, V S

    2014-01-01T23:59:59.000Z

    The nature of MHD turbulence is analyzed through both temporal and spatial magnetic fluctuation spectra. A magnetically turbulent plasma is produced in the MHD wind-tunnel configuration of the Swarthmore Spheromak Experiment (SSX). The power of magnetic fluctuations is projected into directions perpendicular and parallel to a local mean field; the ratio of these quantities shows the presence of variance anisotropy which varies as a function of frequency. Comparison amongst magnetic, velocity, and density spectra are also made, demonstrating that the energy of the turbulence observed is primarily seeded by magnetic fields created during plasma production. Direct spatial spectra are constructed using multi-channel diagnostics and are used to compare to frequency spectra converted to spatial scales using the Taylor Hypothesis. Evidence for the observation of dissipation due to ion inertial length scale physics is also discussed as well as the role laboratory experiment can play in understanding turbulence typica...

  19. Nonlinear transport in quasi-one-dimensional Nb{sub 2}PdS{sub 5} nanowires

    SciTech Connect (OSTI)

    Ning, Wei; Yu, Hongyan; Wang, Ning; Han, Yuyan; Yang, Jiyong; Du, Haifeng; Zhang, Changjin [High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, Anhui (China); Liu, Yequn [Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001 (China); Yang, Kun [National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32306-4005 (United States); Tian, Mingliang, E-mail: tianml@hmfl.ac.cn; Zhang, Yuheng [High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, Anhui (China); Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093 (China)

    2014-10-27T23:59:59.000Z

    Nb{sub 2}PdS{sub 5} is a newly discovered quasi-one-dimensional (quasi-1D) superconductor with a high upper critical field along the chain direction. Here, we report the size-dependent electronic properties of Nb{sub 2}PdS{sub 5} nanowires obtained by ultrasonically cleaving the bulk crystals. The nanowires exhibit a superconductor to insulator transition as the cross-sectional area decreases. Moreover, for the thinner nanowires with insulating state, the transport properties exhibit a power-law dependence on both temperature and bias voltage at an intermediate temperature (<30?K), followed by a conduction saturation below 10?K. We found that such an apparent power-law behavior can be described by the extended variable range hopping theory developed recently for the multichannel quasi-1D systems, where the localization of electrons is expected to be dominant instead of the Luttinger liquid nature.

  20. Source localization of brain activity using helium-free interferometer

    SciTech Connect (OSTI)

    Dammers, Jürgen, E-mail: J.Dammers@fz-juelich.de; Chocholacs, Harald; Eich, Eberhard; Boers, Frank [Institute of Neuroscience and Medicine (INM-4), Forschungszentrum Jülich, Jülich (Germany); Faley, Michael; Dunin-Borkowski, Rafal E. [Peter Grünberg Institute (PGI-5), Forschungszentrum Jülich, Jülich (Germany); Jon Shah, N. [Institute of Neuroscience and Medicine (INM-4), Forschungszentrum Jülich, Jülich (Germany); Department of Neurology, RWTH Aachen University, Aachen (Germany); Jülich Aachen Research Alliance (JARA)—Translational Brain Medicine, Jülich (Germany)

    2014-05-26T23:59:59.000Z

    To detect extremely small magnetic fields generated by the human brain, currently all commercial magnetoencephalography (MEG) systems are equipped with low-temperature (low-T{sub c}) superconducting quantum interference device (SQUID) sensors that use liquid helium for cooling. The limited and increasingly expensive supply of helium, which has seen dramatic price increases recently, has become a real problem for such systems and the situation shows no signs of abating. MEG research in the long run is now endangered. In this study, we report a MEG source localization utilizing a single, highly sensitive SQUID cooled with liquid nitrogen only. Our findings confirm that localization of neuromagnetic activity is indeed possible using high-T{sub c} SQUIDs. We believe that our findings secure the future of this exquisitely sensitive technique and have major implications for brain research and the developments of cost-effective multi-channel, high-T{sub c} SQUID-based MEG systems.

  1. Regression of Environmental Noise in LIGO Data

    E-Print Network [OSTI]

    Tiwari, Vaibhav; Frolov, Valery; Klimenko, Sergey; Mitselmakher, Guenakh; Necula, Valentin; Prodi, Giovanni; Re, Virginia; Salemi, Francesco; Vedovato, Gabriele; Yakushin, Igor

    2015-01-01T23:59:59.000Z

    We address the problem of noise regression in the output of gravitational-wave (GW) interferometers, using data from the physical environmental monitors (PEM). The objective of the regression analysis is to predict environmental noise in the gravitational-wave channel from the PEM measurements. One of the most promising regression method is based on the construction of Wiener-Kolmogorov filters. Using this method, the seismic noise cancellation from the LIGO GW channel has already been performed. In the presented approach the Wiener-Kolmogorov method has been extended, incorporating banks of Wiener filters in the time-frequency domain, multi-channel analysis and regulation schemes, which greatly enhance the versatility of the regression analysis. Also we presents the first results on regression of the bi-coherent noise in the LIGO data.

  2. Regression of Environmental Noise in LIGO Data

    E-Print Network [OSTI]

    Vaibhav Tiwari; Marco Drago; Valery Frolov; Sergey Klimenko; Guenakh Mitselmakher; Valentin Necula; Giovanni Prodi; Virginia Re; Francesco Salemi; Gabriele Vedovato; Igor Yakushin

    2015-03-25T23:59:59.000Z

    We address the problem of noise regression in the output of gravitational-wave (GW) interferometers, using data from the physical environmental monitors (PEM). The objective of the regression analysis is to predict environmental noise in the gravitational-wave channel from the PEM measurements. One of the most promising regression method is based on the construction of Wiener-Kolmogorov filters. Using this method, the seismic noise cancellation from the LIGO GW channel has already been performed. In the presented approach the Wiener-Kolmogorov method has been extended, incorporating banks of Wiener filters in the time-frequency domain, multi-channel analysis and regulation schemes, which greatly enhance the versatility of the regression analysis. Also we presents the first results on regression of the bi-coherent noise in the LIGO data.

  3. X-ray intensity interferometer for undulator radiation

    SciTech Connect (OSTI)

    Gluskin, E.; McNulty, I.; Viccaro, P.J. [Argonne National Lab., IL (United States); Howells, M.R. [Lawrence Berkeley Lab., CA (United States)

    1991-12-31T23:59:59.000Z

    Intensity interferometry is well established with visible light but has never been demonstrated with x-radiation. We propose to measure the transverse coherence of an x-ray beam, for the first time, using the method of Hanbury Brown and Twiss. The x-ray interferometer consists of an array of slits, a grazing incidence reflective beamsplitter, a pair of fast multichannel plate detectors and a broadband, low-noise correlator circuit. The NSLS X1 or X13 soft x-ray undulator will supply the partially coherent x-rays. We are developing this technique to characterize the coherence properties of x-ray beams from high brilliance insertion devices at third-generation synchrotron light facilities such as the Advanced Photon Source and the Advanced Light Source. 17 refs.

  4. X-ray intensity interferometer for undulator radiation

    SciTech Connect (OSTI)

    Gluskin, E.; McNulty, I.; Viccaro, P.J. (Argonne National Lab., IL (United States)); Howells, M.R. (Lawrence Berkeley Lab., CA (United States))

    1991-01-01T23:59:59.000Z

    Intensity interferometry is well established with visible light but has never been demonstrated with x-radiation. We propose to measure the transverse coherence of an x-ray beam, for the first time, using the method of Hanbury Brown and Twiss. The x-ray interferometer consists of an array of slits, a grazing incidence reflective beamsplitter, a pair of fast multichannel plate detectors and a broadband, low-noise correlator circuit. The NSLS X1 or X13 soft x-ray undulator will supply the partially coherent x-rays. We are developing this technique to characterize the coherence properties of x-ray beams from high brilliance insertion devices at third-generation synchrotron light facilities such as the Advanced Photon Source and the Advanced Light Source. 17 refs.

  5. Real-time MSE measurements for current profile control on KSTAR

    SciTech Connect (OSTI)

    De Bock, M. F. M.; Aussems, D.; Huijgen, R.; Scheffer, M. [Eindhoven University of Technology, Eindhoven (Netherlands); Chung, J. [National Fusion Research Institute, Daejeon (Korea, Republic of)

    2012-10-15T23:59:59.000Z

    To step up from current day fusion experiments to power producing fusion reactors, it is necessary to control long pulse, burning plasmas. Stability and confinement properties of tokamak fusion reactors are determined by the current or q profile. In order to control the q profile, it is necessary to measure it in real-time. A real-time motional Stark effect diagnostic is being developed at Korean Superconducting Tokamak for Advanced Research for this purpose. This paper focuses on 3 topics important for real-time measurements: minimize the use of ad hoc parameters, minimize external influences and a robust and fast analysis algorithm. Specifically, we have looked into extracting the retardance of the photo-elastic modulators from the signal itself, minimizing the influence of overlapping beam spectra by optimizing the optical filter design and a multi-channel, multiharmonic phase locking algorithm.

  6. Channeling Effect in Polycrystalline Deuterium-Saturated CVD Diamond Target Bombarded by Deuterium Ion Beam

    E-Print Network [OSTI]

    Bagulya, A V; Negodaev, M A; Rusetskii, A S; Chubenko, A P; Ralchenko, V G; Bolshakov, A P

    2014-01-01T23:59:59.000Z

    At the ion accelerator HELIS at the LPI, the neutron yield is investigated in DD reactions within a polycrystalline deuterium-saturated CVD diamond, during an irradiation of its surface by a deuterium ion beam with the energy less than 30 keV. The measurements of the neutron flux in the beam direction are performed in dependence on the target angle, \\b{eta}, with respect to the beam axis. These measurements are performed using a multichannel detector based on He3 counters. A significant anisotropy in neutron yield is observed, it was higher by a factor of 3 at \\b{eta}=0 compared to that at \\b{eta} = +-45{\\deg}. The possible reasons for the anisotropy, including ion channeling, are discussed.

  7. Channeling Effect in Polycrystalline Deuterium-Saturated CVD Diamond Target Bombarded by Deuterium Ion Beam

    E-Print Network [OSTI]

    A. V. Bagulya; O. D. Dalkarov; M. A. Negodaev; A. S. Rusetskii; A. P. Chubenko; V. G. Ralchenko; A. P. Bolshakov

    2014-09-08T23:59:59.000Z

    At the ion accelerator HELIS at the LPI, the neutron yield is investigated in DD reactions within a polycrystalline deuterium-saturated CVD diamond, during an irradiation of its surface by a deuterium ion beam with the energy less than 30 keV. The measurements of the neutron flux in the beam direction are performed in dependence on the target angle, \\b{eta}, with respect to the beam axis. These measurements are performed using a multichannel detector based on He3 counters. A significant anisotropy in neutron yield is observed, it was higher by a factor of 3 at \\b{eta}=0 compared to that at \\b{eta} = +-45{\\deg}. The possible reasons for the anisotropy, including ion channeling, are discussed.

  8. Radio-nuclide mixture identification using medium energy resolution detectors

    DOE Patents [OSTI]

    Nelson, Karl Einar

    2013-09-17T23:59:59.000Z

    According to one embodiment, a method for identifying radio-nuclides includes receiving spectral data, extracting a feature set from the spectral data comparable to a plurality of templates in a template library, and using a branch and bound method to determine a probable template match based on the feature set and templates in the template library. In another embodiment, a device for identifying unknown radio-nuclides includes a processor, a multi-channel analyzer, and a memory operatively coupled to the processor, the memory having computer readable code stored thereon. The computer readable code is configured, when executed by the processor, to receive spectral data, to extract a feature set from the spectral data comparable to a plurality of templates in a template library, and to use a branch and bound method to determine a probable template match based on the feature set and templates in the template library.

  9. Body composition to climate change studies - the many facets of neutron induced prompt gamma-ray analysis

    SciTech Connect (OSTI)

    Mitra,S.

    2008-11-17T23:59:59.000Z

    In-vivo body composition analysis of humans and animals and in-situ analysis of soil using fast neutron inelastic scattering and thermal neutron capture induced prompt-gamma rays have been described. By measuring carbon (C), nitrogen (N) and oxygen (O), protein, fat and water are determined. C determination in soil has become important for understanding below ground carbon sequestration process in the light of climate change studies. Various neutron sources ranging from radio isotopic to compact 14 MeV neutron generators employing the associated particle neutron time-of-flight technique or micro-second pulsing were implemented. Gamma spectroscopy using recently developed digital multi-channel analyzers has also been described.

  10. Large rank Wilson loops in N=2 superconformal QCD at strong coupling

    E-Print Network [OSTI]

    Benedict Fraser; S. Prem Kumar

    2012-02-28T23:59:59.000Z

    We compute the expectation values of circular Wilson loops in large representations at strong coupling, in the large-N limit of the N=2 superconformal theory with SU(N) gauge group and 2N hypermultiplets. Employing Pestun's matrix integral, we focus attention on symmetric and antisymmetric representations with ranks of order N. We find that large rank antisymmetric loops are independent of the coupling at strong 't Hooft coupling while symmetric Wilson loops grow exponentially with it. Symmetric loops display a non-analyticity as a function of the rank, characterized by the splitting of a single matrix model eigenvalue from the continuum, bearing close resemblance to Bose-Einstein condensation in an ideal gas. We discuss implications of these for a putative large-N string dual. The method of calculation we adopt makes explicit the connection to Fermi and Bose gas descriptions and also suggests a tantalizing connection of the above system to a multichannel Kondo model.

  11. Integrated Emissivity And Temperature Measurement

    DOE Patents [OSTI]

    Poulsen, Peter (Livermore, CA)

    2005-11-08T23:59:59.000Z

    A multi-channel spectrometer and a light source are used to measure both the emitted and the reflected light from a surface which is at an elevated temperature relative to its environment. In a first method, the temperature of the surface and emissivity in each wavelength is calculated from a knowledge of the spectrum and the measurement of the incident and reflected light. In the second method, the reflected light is measured from a reference surface having a known reflectivity and the same geometry as the surface of interest and the emitted and the reflected light are measured for the surface of interest. These measurements permit the computation of the emissivity in each channel of the spectrometer and the temperature of the surface of interest.

  12. Final Technical Report on DOE Junior Faculty Development Award

    SciTech Connect (OSTI)

    Munsat, Tobin

    2014-08-21T23:59:59.000Z

    Over the course of this project we developed and contstructed the Colorado FRC facility, which included a custom vacuum vessel, high voltage and firing circuitry, two plasma gun electrodes, and pumping system, and several diagnostics. Density measurements were made with a multichannel CO{sub 2} (10.6 ?m) laser interferometer. We also developed and a high-resolution magnetic probe array for 3-axis measurements of magnetic fluctuations. We constructed and implemented a triple Langmuir probe for making time-resolved measurements of plasma density, potential, and temperature. By calculating the time history of the gun eigenvalue, we observed indications that the Taylor formation paradigm applies. To estimate the spectral characteristics of fluctuations in an FRC, we developed a technique to extract the relevant spectral information using data from the high-resolution multi-point magnetic probe.

  13. Non-planar microfabricated gas chromatography column

    DOE Patents [OSTI]

    Lewis, Patrick R. (Albuquerque, NM); Wheeler, David R. (Albuquerque, NM)

    2007-09-25T23:59:59.000Z

    A non-planar microfabricated gas chromatography column comprises a planar substrate having a plurality of through holes, a top lid and a bottom lid bonded to opposite surfaces of the planar substrate, and inlet and outlet ports for injection of a sample gas and elution of separated analytes. A plurality of such planar substrates can be aligned and stacked to provide a longer column length having a small footprint. Furthermore, two or more separate channels can enable multi-channel or multi-dimensional gas chromatography. The through holes preferably have a circular cross section and can be coated with a stationary phase material or packed with a porous packing material. Importantly, uniform stationary phase coatings can be obtained and band broadening can be minimized with the circular channels. A heating or cooling element can be disposed on at least one of the lids to enable temperature programming of the column.

  14. Faraday-effect polarimeter-interferometer system for current density measurement on EAST

    SciTech Connect (OSTI)

    Liu, H. Q.; Jie, Y. X., E-mail: yx-jie@ipp.ac.cn; Zou, Z. Y.; Li, W. M.; Wang, Z. X.; Qian, J. P.; Yang, Y.; Zeng, L.; Wei, X. C.; Hu, L. Q.; Wan, B. N. [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031 (China); Ding, W. X.; Brower, D. L. [Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095 (United States); Lan, T.; Li, G. S. [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031 (China); University of Science and Technology of China, Hefei, Anhui 230026 (China)

    2014-11-15T23:59:59.000Z

    A multichannel far-infrared laser-based POlarimeter-INTerferometer (POINT) system utilizing the three-wave technique is under development for current density and electron density profile measurements in the EAST tokamak. Novel molybdenum retro-reflectors are mounted in the inside wall for the double-pass optical arrangement. A Digital Phase Detector with 250 kHz bandwidth, which will provide real-time Faraday rotation angle and density phase shift output, have been developed for use on the POINT system. Initial calibration indicates the electron line-integrated density resolution is less than 5 × 10{sup 16} m{sup ?2} (?2°), and the Faraday rotation angle rms phase noise is <0.1°.

  15. Competing decay-channel fluorescence, dissociation, and ionization in superexcited levels of H{sub 2}

    SciTech Connect (OSTI)

    Glass-Maujean, M. [Laboratoire de Physique Moleculaire pour l'Atmosphere et l'Astrophysique, Universite Pierre et Marie Curie, 4 place Jussieu, F-75252 Paris Cedex 5 (France); Jungen, Ch. [Laboratoire Aime Cotton, Centre National de la Recherche Scientifique, Batiment 505, Universite de Paris-Sud, F-91405 Orsay (France); Department of Physics and Astronomy, University College London, London WC1E 6BT (United Kingdom); Reichardt, G.; Balzer, A. [BESSY II, Albert-Einstein-Strasse 15, D-12489 Berlin (Germany); Schmoranzer, H. [Fachbereich Physik, Technische Universitaet Kaiserslautern, D-67653 Kaiserslautern (Germany); Ehresmann, A.; Haar, I.; Reiss, P. [Institute of Physics and Interdisciplinary Nanostructure Science and Technology, Heinrich-Plett-Strasse 40, Universitaet Kassel, D-34132 Kassel (Germany)

    2010-12-15T23:59:59.000Z

    The absolute cross sections for the competing decay-channel fluorescence, dissociation, and ionization of photoexcited long-lived superexcited H{sub 2} molecular levels have been measured from the ionization threshold of H{sub 2} up to the H(1s) + H(n=3) dissociation limit. The total and partial natural widths of these levels have been determined. Good agreement is found with first principles calculations carried out with the multichannel quantum defect theory for excited levels of {sup 1{Pi}}{sub u}{sup -} symmetry, which represent 70% of the levels studied experimentally. The calculations reproduce the balance between the competing decay processes as well as its substantial evolution from level to level.

  16. Systems and Methods for Integrated Emissivity and Temperature Measurement of a Surface

    DOE Patents [OSTI]

    Poulsen, Peter

    2005-11-08T23:59:59.000Z

    A multi-channel spectrometer and a light source are used to measure both the emitted and the reflected light from a surface which is at an elevated temperature relative to its environment. In a first method, the temperature of the surface and emissivity in each wavelength is calculated from a knowledge of the spectrum and the measurement of the incident and reflected light. In the second method, the reflected light is measured from a reference surface having a known reflectivity and the same geometry as the surface of interest and the emitted and the reflected light are measured for the surface of interest. These measurements permit the computation of the emissivity in each channel of the spectrometer and the temperature of the surface of interest.

  17. An instrumental and numerical method to determine the hydrogenic ratio in isotopic experiments in the TJ-II stellarator

    SciTech Connect (OSTI)

    Baciero, A., E-mail: alfonso.baciero@ciemat.es; Zurro, B. [Laboratorio Nacional de Fusión, CIEMAT, Madrid (Spain); Martínez, M. [Departamento de Física, Universidad Carlos III de Madrid, Leganés (Spain)

    2014-11-15T23:59:59.000Z

    The isotope effect is an important topic that is relevant for future D-T fusion reactors, where the use of deuterium, rather than hydrogen, may lean to improved plasma confinement. An evaluation of the ratio of hydrogen/deuterium is needed for isotope effect studies in current isotopic experiments. Here, the spectral range around H{sub ?} and D{sub ?} lines, obtained with an intensified multi-channel detector mounted to a 1-m focal length spectrometer, is analyzed using a fit function that includes several Gaussian components. The isotopic ratio evolution for a single operational day of the TJ-II stellarator is presented. The role of injected hydrogen by Neutral Beam Injection heating is also studied.

  18. The Deconvolution of Lunar Brightness Temperature based on Maximum Entropy Method using Chang'E-2 Microwave Data

    E-Print Network [OSTI]

    Xing, Shuguo; Feng, Jianqing; Li, Chunlai

    2014-01-01T23:59:59.000Z

    A passive and multi-channel microwave sounder onboard Chang'E-2 orbiter has successfully performed microwave observation of the lunar surface and subsurface structure. Compared with Chang'E-1 orbiter, Chang'E-2 orbiter obtained more accurate and comprehensive microwave brightness temperature data which is helpful for further research. Since there is a close relationship between microwave brightness temperature data and some related properties of the lunar regolith, such as the thickness, temperature and dielectric constant, so precise and high resolution brightness temperature is necessary for such research. However, through the detection mechanism of the microwave sounder, the brightness temperature data acquired from the microwave sounder is weighted by the antenna radiation pattern, so the data is the convolution of the antenna radiation pattern and the lunar brightness temperature. In order to obtain the real lunar brightness temperature, a deconvolution method is needed. The aim of this paper is to solve...

  19. Deep Trek Re-configurable Processor for Data Acquisition (RPDA)

    SciTech Connect (OSTI)

    Bruce Ohme; Michael Johnson

    2009-06-30T23:59:59.000Z

    This report summarizes technical progress achieved during the cooperative research agreement between Honeywell and U.S. Department of Energy to develop a high-temperature Re-configurable Processor for Data Acquisition (RPDA). The RPDA development has incorporated multiple high-temperature (225C) electronic components within a compact co-fired ceramic Multi-Chip-Module (MCM) package. This assembly is suitable for use in down-hole oil and gas applications. The RPDA module is programmable to support a wide range of functionality. Specifically this project has demonstrated functional integrity of the RPDA package and internal components, as well as functional integrity of the RPDA configured to operate as a Multi-Channel Data Acquisition Controller. This report reviews the design considerations, electrical hardware design, MCM package design, considerations for manufacturing assembly, test and screening, and results from prototype assembly and characterization testing.

  20. E-Print Network 3.0 - ampx master interface Sample Search Results

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    2 A. Belad Cours RDF Master SIC 1 Reconnaissance des formes Summary: Apprentissage MatLab 12; A. Belad Cours RDF Master SIC 2 Interface Configuration... 2009a >>...

  1. COO-3110-13 CELLULAR HEREDITY IN HAPLOID CULTURES OF SOMATIC...

    Office of Scientific and Technical Information (OSTI)

    the following specific aims with support from a research grant from the National Cancer Institute (CA-05959, renewal pending): -12- A. We will compare, in haploid and diploid...

  2. army general officer: Topics by E-print Network

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    and Information Sciences Websites Summary: NASA OFFICE OF INSPECTOR GENERAL SEMIANNUAL REPORT October 1, 2012-March 31, 2013 12;A-3 Rocket 9 rocket lifts off from Cape...

  3. afip office 301-319-0043: Topics by E-print Network

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    and Information Sciences Websites Summary: NASA OFFICE OF INSPECTOR GENERAL SEMIANNUAL REPORT October 1, 2012-March 31, 2013 12;A-3 Rocket 9 rocket lifts off from Cape...

  4. asn inspectors responsible: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and Information Sciences Websites Summary: NASA OFFICE OF INSPECTOR GENERAL SEMIANNUAL REPORT October 1, 2012-March 31, 2013 12;A-3 Rocket 9 rocket lifts off from Cape...

  5. E-Print Network 3.0 - asynchronous event-driven particle Sample...

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    Princeton University Collection: Computer Technologies and Information Sciences 12 A Comparison of Two Methods for Advancing Time In Parallel Discrete Event Simulation...

  6. A Lithium Experiment in the Program of Solar Neutrino Research

    E-Print Network [OSTI]

    A. Kopylov; I. Orekhov; V. Petukhov; A. Solomatin

    2006-01-12T23:59:59.000Z

    The experiments sensitive to pp-neutrinos from the Sun are very perspective for the precise measurement of a mixing angle $\\theta_{12}$. A $\

  7. E-Print Network 3.0 - ancestor aegilops tauschii Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Medicine 12 A SINE family widely distributed in the plant kingdom and its evolutionary history Summary: by database sear- ches. Group Family Species Monocots Gramineae Aegilops...

  8. Graphene and its Hybrid Nanostructures for Nanoelectronics and Energy Applications

    E-Print Network [OSTI]

    LIN, JIAN

    2011-01-01T23:59:59.000Z

    improve the PCE of photovoltaic cells. Figure 1.12 (a) Ramantransparent electrode in photovoltaic cell. Novel synthesiswith ITO-based photovoltaic cell. And two approaches of

  9. E-Print Network 3.0 - anthelmintic usage perspectives Sample...

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    current design guidelines 12;A perspective on the status... and Explicit Support for Usage Modes S Jha*, A ... Source: Indiana University, Pervasive Technology Laboratories,...

  10. Health & Safety Plan Last Updated

    E-Print Network [OSTI]

    Anderson, Richard

    Health & Safety Plan Last Updated March 2008 1 #12;A. SCOPE AND RESPONSIBILITY....................................................................................................................................... 3 2. Safety and Health Policy...................................................................................................................... 3 4. Safety Coordinator

  11. DOI: 10.1126/science.1180823 , 425 (2010);327Science

    E-Print Network [OSTI]

    Boone, Charlie

    2010-01-01T23:59:59.000Z

    ,2 Charles Boone1,2 A genome-scale genetic interaction map was constructed by examining 5.4 million gene

  12. E-Print Network 3.0 - actual collaboration support Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    de Chile Collection: Computer Technologies and Information Sciences 12 A Service Oriented Architecture Framework for Collaborative Ivar Jrstad Summary: a common goal. The aim...

  13. E-Print Network 3.0 - anestesia espinal tratamiento Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    SOCIAL 3 CURSO DE LA DIPLOMATURA EN TRABAJO SOCIAL Summary: o tratamiento. -Enorme carga cultural. -- Difcil aplicacin en discap. sensoriales 12;a) Clasificacin...

  14. Michael C. Bond, MD, FACEP, FAAEM Assistant Professor

    E-Print Network [OSTI]

    Weber, David J.

    . 75% E. 100% #12;A. Ben Stiller B. Johnny Depp C. Leonardo DiCaprio D. Tom Hanks Ben Stiller Johnny

  15. E-Print Network 3.0 - arteriellen verschlusserkrankung der Sample...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of Physiology, McGill University Collection: Biology and Medicine 12 A precursor in waterhammer analysis rediscovering Johannes Arris S Tijsseling Alexander Anderson Summary: )....

  16. E-Print Network 3.0 - aleph silicon vertex Sample Search Results

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    Centre de mathmatiques Collection: Mathematics 12 A flavour-independent Higgs boson search collisions at Summary: in Refs. 4 and 5. The tracking system consists of...

  17. 1 Introduction 1 1.1 Department Staffs . . . . . . . . . . . . . . . . . . . . . . . . . .*

    E-Print Network [OSTI]

    Imai, Hiroshi

    Contents 1 Introduction 1 1.1 Department Staffs . . . . . . . . . . . . . . . . . . . . . . . . . .* * . . . . . . . . 1 1.2 A Brief History of the Department . . . . . . . . . . . . . . . . . . * *. . . . . . . 2 2

  18. High sensitivity accelerometers are

    E-Print Network [OSTI]

    Lee, Dongwon

    President for Engineering Bridge Semiconductor Pittsburgh, PA #12;A researcher deposits a PZT film via spin systems. Bridge Semiconductor Pittsburgh, PA Advanced electroceramic materials are enabling new devices

  19. doi:10.1016/j.jchas.2006.02.003

    Broader source: Energy.gov (indexed) [DOE]

    other published results such as those documented in the DOE- sponsored Accident Phenomenology and Consequence Assessment work. 12 A lower or higher result with one code versus...

  20. Journal of Biotechnology 77 (2000) 2535 Determination of full 13

    E-Print Network [OSTI]

    Hemminga, Marcus A.

    -1656(99)00205-9 #12;A.A. de Graaf et al. / Journal of Biotechnology 77 (2000) 25­3526 1997). Thus, Marx et al. (1996

  1. E-Print Network 3.0 - automated radioactive particle Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Radiation Environmental Protection (6601J) October 2002 Summary: 1977 (PB80 213 655) ORPTAD-79-12 A Study of Radioactive Airborne Effluents from Particle Accelerators......

  2. E-Print Network 3.0 - atmospheric stability conditions Sample...

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    wind park model considering atmospheric stability. Wind... : A simple analytical wind park model considering atmospheric stability. Wind Energy, 13, 459-469. 12... : A...

  3. E-Print Network 3.0 - alternative ultrasonic method Sample Search...

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    State University Collection: Physics 12 A MEMS Ultrasonic Transducer for Monitoring of Steel Structures Akash Jain***a Summary: and Environmental Engineering, Carnegie Mellon...

  4. E-Print Network 3.0 - ax tank farm Sample Search Results

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    In collaboration with The Dow Chemical Company 12;A tank farm is a set of storage tanks that hold finished product... product Dedicated Tanks Without available storage ......

  5. Nepal's New Political Landscape

    E-Print Network [OSTI]

    International Crisis Group

    2008-07-03T23:59:59.000Z

    . EXTERNAL RELATIONS ................................................................................................................4 C. POLICY, IDEOLOGY AND PRAGMATISM... .........................................................................................................11 IV. DIGESTING THE RESULTS........................................................................................ 12 A. KATHMANDU: THE BUBBLE THAT DIDN’T BURST .....................................................................12 B. INDIA...

  6. Rensselaer

    E-Print Network [OSTI]

    2009-05-11T23:59:59.000Z

    problems were derived by Sun et al. [133, 134]. Their algorithm ...... SDPLIB 1.2, a library of semidefinite programming test problems. Optimization. Methods and ...

  7. Exercise Session 6 (with solutions) Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 6 (with solutions) Alessandro Abate a.abate@tudelft.nl Marco Forgione m Session 6 ­ sc4026 #12;A. Abate, M. Forgione Linear Quadratic Regulator, in Theory Consider an object ­ Ac.Yr. 2012/13, 1e Sem. Q1 ­ Exercise Session 6 ­ sc4026 1 #12;A. Abate, M. Forgione it can be easily

  8. Exercise Session 2 (with solutions) Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 2 (with solutions) Alessandro Abate a.abate@tudelft.nl Pawel Stano p ­ Exercise Session 2 ­ sc4026 #12;A. Abate, P. Stano Review of Eigenvalues and Eigenvectors Computation Find 1 #12;A. Abate, P. Stano The eigenvectors are found as follows: = 3 : (A - 3I)v = 0 -2 -2 2 -1

  9. Exercise Session 4 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 4 Alessandro Abate a.abate@tudelft.nl Solomon Zegeye s Session 4­ sc4026 #12;A. Abate, S.K. Zegeye Controllability and Observability of Feedback Interconnection. The input of the ­ Ac.Yr. 2009/10, 1e Sem. Q1 ­ Exercise Session 4­ sc4026 1 #12;A. Abate, S.K. Zegeye

  10. Exercise Session 7 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 7 Alessandro Abate a.abate@tudelft.nl Aleksandar Haber a Session 7 ­ sc4026 #12;A. Abate, A. Haber Solution to state space models Find the output response ­ Exercise Session 7 ­ sc4026 1 #12;A. Abate, A. Haber Loss of Observability and/or Controllability Recall

  11. Exercise Session 2 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 2 Alessandro Abate a.abate@tudelft.nl Aleksandar Haber a ­ Exercise Session 2­ sc4026 #12;A. Abate, A. Haber Basic review of Eigenvalues and Eigenvectors Computation #12;A. Abate, A. Haber Matrix Exponential Compute eAt , through its diagonalization, where: A = 2 4 -2

  12. Exercise Session 5 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 5 Alessandro Abate a.abate@tudelft.nl Jacopo Antonello j Session 5 ­ sc4026 #12;A. Abate, J. Antonello Eigenvalue Assignment via Controllable Canonical Form ­ sc4026 1 #12;A. Abate, J. Antonello Observability and Observer Design Consider a process in the state

  13. Exercise Session 7 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 7 Alessandro Abate a.abate@tudelft.nl Pawel Stano p.stano@tudelft.nl Delft 7 ­ sc4026 #12;A. Abate, P. Stano Solution to state space models Find the output response to a step ­ Exercise Session 7 ­ sc4026 1 #12;A. Abate, P. Stano Observer Design for DC Servo Problem 2: Observer

  14. Exercise Session 2 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 2 Alessandro Abate a.abate@tudelft.nl Pawel Stano p ­ Exercise Session 2 ­ sc4026 #12;A. Abate, P. Stano Review of Eigenvalues and Eigenvectors Computation Find with the aid of MATLAB. ­ Ac.Yr. 2011/12, 1e Sem. Q1 ­ Exercise Session 2 ­ sc4026 1 #12;A. Abate, P. Stano

  15. Exercise Session 4 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 4 Alessandro Abate a.abate@tudelft.nl Jacopo Antonello j Session 4­ sc4026 #12;A. Abate, J. Antonello Lyapunov Stability Consider the planar system x = Ax = -2 0 0 ­ Exercise Session 4­ sc4026 1 #12;A. Abate, J. Antonello Controllability Show that the property

  16. Exercise Session 6 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 6 Alessandro Abate a.abate@tudelft.nl Marco Forgione m Session 6 ­ sc4026 #12;A. Abate, M. Forgione Linear Quadratic Regulator, in Theory Consider an object Sem. Q1 ­ Exercise Session 6 ­ sc4026 1 #12;A. Abate, M. Forgione Integral Control Consider the simple

  17. Exercise Session 5 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 5 Alessandro Abate a.abate@tudelft.nl Aleksandar Haber a Session 5 ­ sc4026 #12;A. Abate, A. Haber State vs Output Feedback Consider the model x = 2 6 6 4 0 1 0 0 ­ Exercise Session 5 ­ sc4026 1 #12;A. Abate, A. Haber Linear Quadratic Regulator, in Theory Consider

  18. Exercise Session 4 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 4 Alessandro Abate a.abate@tudelft.nl Aleksandar Haber a Session 4­ sc4026 #12;A. Abate, A. Haber Lyapunov Stability Consider the planar system x = Ax = -2 0 0 -2 ­ Exercise Session 4­ sc4026 1 #12;A. Abate, A. Haber Controllability Show that the property

  19. Exercise Session 3 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 3 Alessandro Abate a.abate@tudelft.nl Marco Forgione m ­ Exercise Session 3 ­ sc4026 #12;A. Abate, M. Forgione Linearization Example In the following diagram, we.Yr. 2012/13, 1e Sem. Q1 ­ Exercise Session 3 ­ sc4026 1 #12;A. Abate, M. Forgione · x, horizontal position

  20. Exercise Session 6 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 6 Alessandro Abate a.abate@tudelft.nl Pawel Stano p.stano@tudelft.nl Delft 6 ­ sc4026 #12;A. Abate, P. Stano Linear Quadratic Regulator, in Theory Consider an object of mass m ­ Exercise Session 6 ­ sc4026 1 #12;A. Abate, P. Stano Integral Control Consider the simple first-order model

  1. Exercise Session 7 (with solutions) Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 7 (with solutions) Alessandro Abate a.abate@tudelft.nl Aleksandar Haber a Session 7 ­ sc4026 #12;A. Abate, A. Haber Solution to state space models Find the output response Sem. Q1 ­ Exercise Session 7 ­ sc4026 1 #12;A. Abate, A. Haber The output is Y (t) = CX(t) + DU

  2. Exercise Session 7 (with solutions) Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 7 (with solutions) Alessandro Abate a.abate@tudelft.nl Marco Forgione m Session 7 ­ sc4026 #12;A. Abate, M. Forgione Solution to state space models Find the output response Sem. Q1 ­ Exercise Session 7 ­ sc4026 1 #12;A. Abate, M. Forgione The output is Y (t) = CX(t) + DU

  3. Bonus Point Exercise 1 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Bonus Point Exercise 1 Alessandro Abate a.abate@tudelft.nl Aleksandar Haber a ­ Exercise Session 1 ­ sc4026 #12;A. Abate, A. Haber Linearization Example In the following diagram, we have.Yr. 2009/10, 1e Sem. Q1 ­ Exercise Session 1 ­ sc4026 1 #12;A. Abate, A. Haber · x, horizontal position

  4. Exercise Session 3 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 3 Alessandro Abate a.abate@tudelft.nl Pawel Stano p ­ Exercise Session 3 ­ sc4026 #12;A. Abate, P. Stano Linearization Example In the following diagram, we have.Yr. 2011/12, 1e Sem. Q1 ­ Exercise Session 3 ­ sc4026 1 #12;A. Abate, P. Stano · x, horizontal position

  5. Exercise Session 7 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 7 Alessandro Abate a.abate@tudelft.nl Marco Forgione m Session 7 ­ sc4026 #12;A. Abate, M. Forgione Solution to state space models Find the output response ­ Exercise Session 7 ­ sc4026 1 #12;A. Abate, M. Forgione Loss of Observability and/or Controllability Recall

  6. Exercise Session 3 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 3 Alessandro Abate a.abate@tudelft.nl Aleksandar Haber a ­ Exercise Session 3­ sc4026 #12;A. Abate, A. Haber Linearization Example In the following diagram, we have.Yr. 2010/11, 1e Sem. Q1 ­ Exercise Session 3­ sc4026 1 #12;A. Abate, A. Haber · x, horizontal position

  7. Bonus Point Exercise 2 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Bonus Point Exercise 2 Alessandro Abate a.abate@tudelft.nl Aleksandar Haber a ­ Exercise Session 2 ­ sc4026 #12;A. Abate, A. Haber Solution to state space models Find the output response Sem. Q1 ­ Exercise Session 2 ­ sc4026 1 #12;A. Abate, A. Haber Equilibria and Phase Portrait Determine

  8. Exercise Session 2 (with solutions) Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 2 (with solutions) Alessandro Abate a.abate@tudelft.nl Jacopo Antonello j ­ Exercise Session 2 ­ sc4026 #12;A. Abate, J. Antonello Review of Eigenvalues and Eigenvectors Computation 1 #12;A. Abate, J. Antonello The eigenvectors are found as follows: = 3 : (A - 3I)v = 0 -2 -2 2

  9. Exercise Session 6 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 6 Alessandro Abate a.abate@tudelft.nl Aleksandar Haber a Session 6 ­ sc4026 #12;A. Abate, A. Haber Linear Quadratic Regulator, in Theory Consider an object of mass Sem. Q1 ­ Exercise Session 6 ­ sc4026 1 #12;A. Abate, A. Haber Integral Control Consider the simple

  10. Exercise Session 2 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 2 Alessandro Abate a.abate@tudelft.nl Jacopo Antonello j ­ Exercise Session 2 ­ sc4026 #12;A. Abate, J. Antonello Review of Eigenvalues and Eigenvectors Computation with the aid of MATLAB. ­ Ac.Yr. 2012/13, 1e Sem. Q1 ­ Exercise Session 2 ­ sc4026 1 #12;A. Abate, J. Antonello

  11. Exercise Session 3 (with solutions) Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 3 (with solutions) Alessandro Abate a.abate@tudelft.nl Marco Forgione m ­ Exercise Session 3 ­ sc4026 #12;A. Abate, M. Forgione Linearization Example In the following diagram, we.Yr. 2012/13, 1e Sem. Q1 ­ Exercise Session 3 ­ sc4026 1 #12;A. Abate, M. Forgione · x, horizontal position

  12. Exercise Session 1 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 1 Alessandro Abate a.abate@tudelft.nl Aleksandar Haber a ­ Exercise Session 1 ­ sc4026 #12;A. Abate, A. Haber 1. Properties of the matrix exponential Show, by using/10, 1e Sem. Q1 ­ Exercise Session 1 ­ sc4026 1 #12;A. Abate, A. Haber 2. Elaboration of the Predator

  13. Exercise Session 3 (with solutions) Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 3 (with solutions) Alessandro Abate a.abate@tudelft.nl Pawel Stano p ­ Exercise Session 3 ­ sc4026 #12;A. Abate, P. Stano Linearization Example In the following diagram, we have.Yr. 2011/12, 1e Sem. Q1 ­ Exercise Session 3 ­ sc4026 1 #12;A. Abate, P. Stano · x, horizontal position

  14. Exercise Session 5 (with solutions) Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 5 (with solutions) Alessandro Abate a.abate@tudelft.nl Aleksandar Haber a Session 5 ­ sc4026 #12;A. Abate, P. Stano Eigenvalue Assignment via Controllable Canonical Form Consider ­ sc4026 1 #12;A. Abate, P. Stano The state space representation is: x1 x2 x3 x4 = -1 -2 -3

  15. Exercise Session 5 (with solutions) Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 5 (with solutions) Alessandro Abate a.abate@tudelft.nl Jacopo Antonello j Session 5 ­ sc4026 #12;A. Abate, J. Antonello Eigenvalue Assignment via Controllable Canonical Form ­ sc4026 1 #12;A. Abate, J. Antonello The state space representation is: x1 x2 x3 x4 = -1

  16. Exercise Session 4 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 4 Alessandro Abate a.abate@tudelft.nl Aleksandar Haber a ­ Exercise Session 4­ sc4026 #12;A. Abate, A. Haber Nonlinear System, Linearization, Stability Consider. ­ Ac.Yr. 2010/11, 1e Sem. Q1 ­ Exercise Session 4­ sc4026 1 #12;A. Abate, A. Haber Controllability Show

  17. Exercise Session 2 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Exercise Session 2 Alessandro Abate a.abate@tudelft.nl Aleksandar Haber a ­ Exercise Session 2 ­ sc4026 #12;A. Abate, A. Haber Properties of the matrix exponential Show, by using/11, 1e Sem. Q1 ­ Exercise Session 2 ­ sc4026 1 #12;A. Abate, A. Haber Review of Eigenvalues

  18. A TURKEY NESTING STUDY IN GREGORY COUNTY, SOUTH DAKOTA

    E-Print Network [OSTI]

    A TURKEY NESTING STUDY IN GREGORY COUNTY, SOUTH DAKOTA by Tara L. Wertz A thesis submitted Sciences (Wildlife Option) South Dakota State University 1986 #12;A TURKEY NESTING STUDY IN GREGORY COUNTY. of Wildlife and Fisheries Sciences 11 Date Date #12;A TURKEY NESTING STUDY IN GREGORY COUNTY, SOUTH DAKOTA

  19. A Guide tO WORKING wITH COLUMBIA UNIVERSITY

    E-Print Network [OSTI]

    Qian, Ning

    A Guide tO WORKING wITH COLUMBIA UNIVERSITY Information for Minority, Women, and Local Businesses and Individuals #12;A Guide tO WORKING wITH COLUMBIA University INTRODUCTIONORMATION . . . . . . . . . . . . . . . . . . . . . . . . . .12 #12;A Guide to WORKING wITH COLUMBIA University 1 INTRODUCTION Columbia University has a long

  20. Wave-packet continuum discretization for quantum scattering

    E-Print Network [OSTI]

    O. A. Rubtsova; V. I. Kukulin; V. N. Pomerantsev

    2015-01-15T23:59:59.000Z

    A general approach to a solution of few- and many-body scattering problems based on a continuum-discretization procedure is described in detail. The complete discretization of continuous spectrum is realized using stationary wave packets which are the normalized states constructed from exact non-normalized continuum states. Projecting the wave functions and all scattering operators like $t$-matrix, resolvent, etc. on such a wave-packet basis results in a formulation of quantum scattering problem entirely in terms of discrete elements and linear equations with regular matrices. It is demonstrated that there is a close relation between the above stationary wave packets and pseudostates which are employed often to approximate the scattering states with a finite $L_2$ basis. Such a fully discrete treatment of complicated few- and many-body scattering problems leads to significant simplification of their practical solution. Also we get finite-dimensional approximations for complicated operators like effective interactions between composite particles constructed via the Feshbach-type projection formalism. As illustrations to this general approach we consider several important particular problems including multichannel scattering and scattering in the three-nucleon system within the Faddeev framework.

  1. Feasibility Study of Gas Electron Multiplier Detector as an X-Ray Image Sensor

    E-Print Network [OSTI]

    Shin, Sukyoung; Lee, Soonhyouk

    2015-01-01T23:59:59.000Z

    For its ease manufacturing, flexible geometry, and cheap manufacturing cost, the gas electron multiplier (GEM) detector can be used as an x-ray image sensor. For this purpose, we acquired relative detection efficiencies and suggested a method to increase the detection efficiency in order to study the possibility of GEM detector as an x-ray image sensor. The GEM detector system is composed of GEM foils, the instrument system, the gas system, and the negative power supply. The instrument system consists of the A225 charge sensitive preamp, A206 discriminator, and MCA8000D multichannel analyzer. For the gas system, Argon gas was mixed with CO2 to the ratio of 8:2, and for the negative 2,000 volts, the 3106D power supply was used. The CsI-coated GEM foil was used to increase the detection efficiency. Fe-55 was used as an x-ray source and the relative efficiency was acquired by using the ratio of GEM detector to the CdTe detector. The total count method and the energy spectrum method were used to calculate the rel...

  2. Laser for high frequency modulated interferometry

    DOE Patents [OSTI]

    Mansfield, Dennis K. (E. Windsor, NJ); Vocaturo, Michael (Columbus, NJ); Guttadora, Lawrence J. (Iselin, NJ)

    1991-01-01T23:59:59.000Z

    A Stark-tuned laser operating in the 119 micron line of CH.sub.3 OH has an output power of several tens of milliwatts at 30 Watts of pump power while exhibiting a doublet splitting of about ten MHz with the application of a Stark field on the order of 500 volts/cm. This output power allows for use of the laser in a multi-channel interferometer, while its high operating frequency permits the interferometer to measure rapid electron density changes in a pellet injected or otherwise fueled plasma such as encountered in magnetic fusion devices. The laser includes a long far-infrared (FIR) pyrex resonator tube disposed within a cylindrical water jacket and incorporating charged electrodes for applying the Stark field to a gas confined therein. With the electrodes located within the resonator tube, the resonator tube walls are cooled by a flowing coolant without electrical breakdown in the coolant liquid during application of the Stark field. Wall cooling allows for substantially increased FIR output powers. Provision is made for introducing a buffer gas into the resonator tube for increasing laser output power and its operating bandwidth.

  3. A pepper-pot emittance meter for low-energy heavy-ion beams

    SciTech Connect (OSTI)

    Kremers, H. R.; Beijers, J. P. M.; Brandenburg, S. [Kernfysisch Versneller Instituut, University of Groningen, Zernikelaan 25, 9747 AA Groningen (Netherlands)

    2013-02-15T23:59:59.000Z

    A novel emittance meter has been developed to measure the four-dimensional, transverse phase-space distribution of a low-energy ion beam using the pepper-pot technique. A characteristic feature of this instrument is that the pepper-pot plate, which has a linear array of holes in the vertical direction, is scanned horizontally through the ion beam. This has the advantage that the emittance can also be measured at locations along the beam line where the beam has a large horizontal divergence. A set of multi-channel plates, scintillation screen, and ccd camera is used as a position-sensitive ion detector allowing a large range of beam intensities that can be handled. This paper describes the design, construction, and operation of the instrument as well as the data analysis used to reconstruct the four-dimensional phase-space distribution of an ion beam. Measurements on a 15 keV He{sup +} beam are used as an example.

  4. Theory of attosecond transient absorption spectroscopy of strong-field-generated ions

    SciTech Connect (OSTI)

    Santra, Robin [Center for Free-Electron Laser Science, DESY, Notkestrasse 85, D-22607 Hamburg (Germany); Department of Physics, University of Hamburg, Jungiusstrasse 9, D-20355 Hamburg (Germany); Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106 (United States); Yakovlev, Vladislav S. [Department fuer Physik, Ludwig-Maximilians-Universitaet, Am Coulombwall 1, D-85748 Garching (Germany); Max-Planck-Institut fuer Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching (Germany); Pfeifer, Thomas [Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, D-69117 Heidelberg (Germany); Loh, Zhi-Heng [Departments of Chemistry and Physics, University of California, Berkeley, California 94720 (United States); Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

    2011-03-15T23:59:59.000Z

    Strong-field ionization generally produces ions in a superposition of ionic eigenstates. This superposition is generally not fully coherent and must be described in terms of a density matrix. A recent experiment [E. Goulielmakis et al., Nature (London) 466, 739 (2010)] employed attosecond transient absorption spectroscopy to determine the density matrix of strong-field-generated Kr{sup +} ions. The experimentally observed degree of coherence of the strong-field-generated Kr{sup +} ions is well reproduced by a recently developed multichannel strong-field-ionization theory, but there is significant disagreement between experiment and theory with respect to the degree of alignment of the Kr{sup +} ions. In the present paper, the theory underlying attosecond transient absorption spectroscopy of strong-field-generated ions is developed. The theory is formulated in such a way that the nonperturbative nature of the strong-field-ionization process is systematically taken into account. The impact of attosecond pulse propagation effects on the interpretation of experimental data is investigated both analytically and numerically. It is shown that attosecond pulse propagation effects cannot explain why the experimentally determined degree of alignment of strong-field-generated Kr{sup +} ions is much smaller than predicted by existing theory.

  5. Quench dynamics in SRF cavities: can we locate the quench origin with 2nd sound?

    SciTech Connect (OSTI)

    Maximenko, Yulia; /Moscow, MIPT; Segatskov, Dmitri A.; /Fermilab

    2011-03-01T23:59:59.000Z

    A newly developed method of locating quenches in SRF cavities by detecting second-sound waves has been gaining popularity in SRF laboratories. The technique is based on measurements of time delays between the quench as determined by the RF system and arrival of the second-sound wave to the multiple detectors placed around the cavity in superfluid helium. Unlike multi-channel temperature mapping, this approach requires only a few sensors and simple readout electronics; it can be used with SRF cavities of almost arbitrary shape. One of its drawbacks is that being an indirect method it requires one to solve an inverse problem to find the location of a quench. We tried to solve this inverse problem by using a parametric forward model. By analyzing the data we found that the approximation where the second-sound emitter is a near-singular source does not describe the physical system well enough. A time-dependent analysis of the quench process can help us to put forward a more adequate model. We present here our current algorithm to solve the inverse problem and discuss the experimental results.

  6. E-Smart System for In-Situ Detection of Environmental Contaminants

    SciTech Connect (OSTI)

    S. Leffler

    2000-03-01T23:59:59.000Z

    A team of industrial, academic, and government organizations participated in the development of the Environmental Systems Management, Analysis and Reporting Network (E-SMART). E-SMART integrates diverse monitoring and control technologies by means of a modular, ''building block'' design approach to allow for flexible system configuration. The E-SMART network treats each smart device-whether a sensor, sampler, or actuator- as a black box that obeys the standard communication protocols and electrical interfaces for the network. This approach allows multiple vendors to produce different sensors which meet the same functional specification and which can be interchanged on the network without affecting operation. The project further developed and advanced the E-SMART standardized network protocol to include new sensors, sampling systems, and graphical user interfaces. Specifically, the E-SMART team developed the following three system elements: (1) Base technology for a new class of smart , highly sensitive, chemically-specific, in-situ, multichannel microsensors utilizing integrated optical interferometry technology, (2) A set of additional E-SMART-compatible sensors adapted from commercial off-the-shelf technologies, and (3) A Data Management and Analysis System (DMAS), including network management components and the user-friendly graphical user interface (GUI) for data evaluation and visualization.

  7. Ambient temperature cadmium zinc telluride radiation detector and amplifier circuit

    DOE Patents [OSTI]

    McQuaid, James H. (Livermore, CA); Lavietes, Anthony D. (Hayward, CA)

    1998-05-29T23:59:59.000Z

    A low noise, low power consumption, compact, ambient temperature signal amplifier for a Cadmium Zinc Telluride (CZT) radiation detector. The amplifier can be used within a larger system (e.g., including a multi-channel analyzer) to allow isotopic analysis of radionuclides in the field. In one embodiment, the circuit stages of the low power, low noise amplifier are constructed using integrated circuit (IC) amplifiers , rather than discrete components, and include a very low noise, high gain, high bandwidth dual part preamplification stage, an amplification stage, and an filter stage. The low noise, low power consumption, compact, ambient temperature amplifier enables the CZT detector to achieve both the efficiency required to determine the presence of radio nuclides and the resolution necessary to perform isotopic analysis to perform nuclear material identification. The present low noise, low power, compact, ambient temperature amplifier enables a CZT detector to achieve resolution of less than 3% full width at half maximum at 122 keV for a Cobalt-57 isotope source. By using IC circuits and using only a single 12 volt supply and ground, the novel amplifier provides significant power savings and is well suited for prolonged portable in-field use and does not require heavy, bulky power supply components.

  8. Ambient temperature cadmium zinc telluride radiation detector and amplifier circuit

    DOE Patents [OSTI]

    McQuaid, J.H.; Lavietes, A.D.

    1998-05-26T23:59:59.000Z

    A low noise, low power consumption, compact, ambient temperature signal amplifier for a Cadmium Zinc Telluride (CZT) radiation detector is disclosed. The amplifier can be used within a larger system (e.g., including a multi-channel analyzer) to allow isotopic analysis of radionuclides in the field. In one embodiment, the circuit stages of the low power, low noise amplifier are constructed using integrated circuit (IC) amplifiers , rather than discrete components, and include a very low noise, high gain, high bandwidth dual part preamplification stage, an amplification stage, and an filter stage. The low noise, low power consumption, compact, ambient temperature amplifier enables the CZT detector to achieve both the efficiency required to determine the presence of radionuclides and the resolution necessary to perform isotopic analysis to perform nuclear material identification. The present low noise, low power, compact, ambient temperature amplifier enables a CZT detector to achieve resolution of less than 3% full width at half maximum at 122 keV for a Cobalt-57 isotope source. By using IC circuits and using only a single 12 volt supply and ground, the novel amplifier provides significant power savings and is well suited for prolonged portable in-field use and does not require heavy, bulky power supply components. 9 figs.

  9. RELAP5 Prediction of Transient Tests in the RD-14 Test Facility

    SciTech Connect (OSTI)

    Lee, Sukho [Korea Institute of Nuclear Safety (Korea, Republic of); Kim, Manwoong [Korea Institute of Nuclear Safety (Korea, Republic of); Kim, Hho-Jung [Korea Institute of Nuclear Safety (Korea, Republic of); Lee, John C. [University of Michigan (United States)

    2005-09-15T23:59:59.000Z

    Although the RELAP5 computer code has been developed for best-estimate transient simulation of a pressurized water reactor and its associated systems, it could not assess the thermal-hydraulic behavior of a Canada deuterium uranium (CANDU) reactor adequately. However, some studies have been initiated to explore the applicability for simulating a large-break loss-of-coolant accident in CANDU reactors. In the present study, the small-reactor inlet header break test and the steam generator secondary-side depressurization test conducted in the RD-14 test facility were simulated with the RELAP5/MOD3.2.2 code to examine its extended capability for all the postulated transients and accidents in CANDU reactors. The results were compared with experimental data and those of the CATHENA code performed by Atomic Energy of Canada Limited.In the RELAP5 analyses, the heated sections in the facility were simulated as a multichannel with five pipe models, which have identical flow areas and hydraulic elevations, as well as a single-pipe model.The results of the small-reactor inlet header break and the steam generator secondary-side depressurization simulations predicted experimental data reasonably well. However, some discrepancies in the depressurization of the primary heat transport system after the header break and consequent time delay of the major phenomena were observed in the simulation of the small-reactor inlet header break test.

  10. RAMONA-4B a computer code with three-dimensional neutron kinetics for BWR and SBWR system transient - user`s manual

    SciTech Connect (OSTI)

    Rohatgi, U.S.; Cheng, H.S.; Khan, H.J.; Mallen, A.N.; Neymotin, L.Y.

    1998-03-01T23:59:59.000Z

    This document is the User`s Manual for the Boiling Water Reactor (BWR), and Simplified Boiling Water Reactor (SBWR) systems transient code RAMONA-4B. The code uses a three-dimensional neutron-kinetics model coupled with a multichannel, nonequilibrium, drift-flux, phase-flow model of the thermal hydraulics of the reactor vessel. The code is designed to analyze a wide spectrum of BWR core and system transients. Chapter 1 gives an overview of the code`s capabilities and limitations; Chapter 2 describes the code`s structure, lists major subroutines, and discusses the computer requirements. Chapter 3 is on code, auxillary codes, and instructions for running RAMONA-4B on Sun SPARC and IBM Workstations. Chapter 4 contains component descriptions and detailed card-by-card input instructions. Chapter 5 provides samples of the tabulated output for the steady-state and transient calculations and discusses the plotting procedures for the steady-state and transient calculations. Three appendices contain important user and programmer information: lists of plot variables (Appendix A) listings of input deck for sample problem (Appendix B), and a description of the plotting program PAD (Appendix C). 24 refs., 18 figs., 11 tabs.

  11. Applications of a portable MCA in nuclear safeguards

    SciTech Connect (OSTI)

    Halbig, J.K.; Klosterbuer, F.; Cameron, R.A.

    1986-02-01T23:59:59.000Z

    In 1981 a small, battery-operated multichannel analyzer (MCA) prototype developed at Los Alamos National Laboratory was delivered to the International Atomic Energy Agency (IAEA). The intent was to produce an instrument for inspector (nonscientist) use. Automated measurement programs were built into the MCA. An enhanced, commercially produced MCA is now available, which was patterned after and is software compatible with the prototype. After an extensive review of the hardware and software of the available portable MCAs, the IAEA has chosen this MCA to be used by IAEA inspectors throughout the world. Inspectors from the EURATOM Directorate of Safeguards are also using these MCAs in inspections throughout Europe. While this MCA's portability and programmability make it ideally suited for infield applications, its powerful built-in intelligence and communications protocol make it a strong candidate for distributed data acquisition and control systems. The user-instrument interface philosophy is so easy to use that in domestic and international training schools, the operators manual is not used.

  12. Technical Note: Removing the stem effect when performing Ir-192 HDR brachytherapy in vivo dosimetry using plastic scintillation detectors: A relevant and necessary step

    SciTech Connect (OSTI)

    Therriault-Proulx, Francois; Beddar, Sam; Briere, Tina M.; Archambault, Louis; Beaulieu, Luc [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 94, Houston, Texas 77030 (United States) and Departement de Physique, de Genie Physique et d'Optique, Universite Laval, Quebec, Quebec G1K 7P4 (Canada); Department of Radiation Physics, University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 94, Houston, Texas 77030 (United States); Departement de Physique, de Genie Physique et d'Optique, Universite Laval, Quebec, Quebec G1K 7P4 (Canada) and Departement de Radio-Oncologie, Ho circumflex tel-Dieu de Quebec, Centre Hospitalier Universitaire de Quebec, Quebec, Quebec G1R 2J6 (Canada)

    2011-04-15T23:59:59.000Z

    Purpose: The purpose of this study was to investigate whether or not a stem effect removal technique is necessary when performing Ir-192 HDR brachytherapy in vivo dosimetry using a scintillation detector. Methods: A red-green-blue photodiode connected to a multichannel electrometer was used to detect the light emitted from a plastic scintillation detector (PSD) during irradiation with an Ir-192 HDR brachytherapy source. Accuracy in dose measurement was compared with and without the use of stem effect removal techniques. Monochromatic and polychromatic filtration techniques were studied. An in-house template was built for accurate positioning of catheters in which the source and the PSD were inserted. Dose distribution was measured up to 5 cm from source to detector in the radial and longitudinal directions. Results: The authors found the stem effect to be particularly important when the source was close to the optical fiber guide and far from the scintillation component of the detector. It can account for up to (72{+-}3)% of the signal under clinically relevant conditions. The polychromatic filtration outperformed the monochromatic filtration as well as the absence of filtration in regard to dose measurement accuracy. Conclusions: It is necessary to implement a stem effect removal technique when building a PSD for in vivo dosimetry during Ir-192 HDR brachytherapy. The PSD that the authors have developed for this study would be suitable for such an application.

  13. Stratigraphic and tectonic framework of a new petroleum province in Romania: North Dobrogea - Adjoining Black Sea continental shelf

    SciTech Connect (OSTI)

    Gradinaru, E.; Corneliu, D.; Dragastan, O. (Univ. of Bucharest (Romania)); Lutac, D. (Petromar Co., Bucharest (Romania))

    1991-08-01T23:59:59.000Z

    The authors paper provides the first publicly available synthesis of the geologic data resulting from integrated analyses of multichannel-seismic profiles and boreholes, achieved during more than 15 years of petroleum exploration in the Romanian Black Sea continental shelf overlying the eastward extension of the Alpine North Dobrogean fold belt, where a new petroleum province is being developed. A formally established lithostratigraphic sequence is introduced for the super-Triassic Mesozoic and lower Cenozoic rocks drilled in the studied area. Chronostratigraphic, seismostratigraphic, and paleoenvironmental interpretations are included. A tentative interpretation relating the depositional record in this area to the eustatic sea level history and global depositional cycles is attempted. The major building events of this segment of the Romanian Black Sea continental shelf, where different tectonic styles were superimposed, are closely linked to the geological history of both the Alpine North Dobrogean foldbelt and the Black Sea basin. Considerations about hydrocarbon source rocks and reservoir beds in the analyzed area, together with an assessment of future potential, will also be included.

  14. Integrated intra-subassembly treatment in the SASSYS-1 LMR systems analysis code

    SciTech Connect (OSTI)

    Dunn, F.

    1992-09-01T23:59:59.000Z

    This report discusses a hot channel treatment which has been added to the SASSYS-1 LMR systems analysis code by providing for a multiple pin treatment of each of one or more subassemblies. This is an explicit calculation of intra-subassembly effects, not a hot-channel adjustment to a calculated average channel. Thus, the code can account for effects such as transient flow redistribution, both within a subassembly and among subassemblies. The code now provides a total integrated thermal hydraulic treatment including a multiple pin treatment within subassemblies, a multi-channel treatment of the whole core, and models for the primary coolant loops, the intermediate coolant loops, the steam generators, and the balance of plant. Currently the multiple-pin option is only implemented for single-phase calculations. It is not applicable after the onset of boiling or pin disruption. The new multiple pin treatment is being verified with detailed temperature data from instrumented subassemblies in EBR-II, both steady-state and transient, with special emphasis on passive safety tests such as SHRT-45. For the SHRT-45 test, excellent agreement is obtained between code predictions and experimental measurements of coolant temperatures.

  15. Integrated intra-subassembly treatment in the SASSYS-1 LMR systems analysis code

    SciTech Connect (OSTI)

    Dunn, F.

    1992-01-01T23:59:59.000Z

    This report discusses a hot channel treatment which has been added to the SASSYS-1 LMR systems analysis code by providing for a multiple pin treatment of each of one or more subassemblies. This is an explicit calculation of intra-subassembly effects, not a hot-channel adjustment to a calculated average channel. Thus, the code can account for effects such as transient flow redistribution, both within a subassembly and among subassemblies. The code now provides a total integrated thermal hydraulic treatment including a multiple pin treatment within subassemblies, a multi-channel treatment of the whole core, and models for the primary coolant loops, the intermediate coolant loops, the steam generators, and the balance of plant. Currently the multiple-pin option is only implemented for single-phase calculations. It is not applicable after the onset of boiling or pin disruption. The new multiple pin treatment is being verified with detailed temperature data from instrumented subassemblies in EBR-II, both steady-state and transient, with special emphasis on passive safety tests such as SHRT-45. For the SHRT-45 test, excellent agreement is obtained between code predictions and experimental measurements of coolant temperatures.

  16. Statistical Evidence for the Existence of Alfv\\'enic Turbulence in Solar Coronal Loops

    E-Print Network [OSTI]

    Liu, Jiajia; De Moortel, Ineke; Threlfall, James; Bethge, Christian

    2014-01-01T23:59:59.000Z

    Recent observations have demonstrated that waves which are capable of carrying large amounts of energy are ubiquitous throughout the solar corona. However, the question of how this wave energy is dissipated (on which time and length scales) and released into the plasma remains largely unanswered. Both analytic and numerical models have previously shown that Alfv\\'enic turbulence may play a key role not only in the generation of the fast solar wind, but in the heating of coronal loops. In an effort to bridge the gap between theory and observations, we expand on a recent study [De Moortel et al., ApJL, 782:L34, 2014] by analyzing thirty-seven clearly isolated coronal loops using data from the Coronal Multi-channel Polarimeter (CoMP) instrument. We observe Alfv\\'enic perturbations with phase speeds which range from 250-750 km/s and periods from 140-270 s for the chosen loops. While excesses of high frequency wave-power are observed near the apex of some loops (tentatively supporting the onset of Alfv\\'enic turbu...

  17. Role of alkyl alcohol on viscosity of silica-based chemical gels for decontamination of highly radioactive nuclear facilities

    SciTech Connect (OSTI)

    Choi, B. S.; Yoon, S. B.; Jung, C. H.; Lee, K. W.; Moon, J. K. [Div. of Decontamination and Decommissioning Technology Development, Korea Atomic Energy Research Inst., Daedeok-daero 989-111, Yuseong-gu, Daejeon, 305-353 (Korea, Republic of)

    2012-07-01T23:59:59.000Z

    Silica-based chemical gel for the decontamination of nuclear facilities was prepared by using fumed silica as a viscosifier, a 0.5 M Ce (IV) solution dissolved in concentrated nitric acid as a chemical decontamination agent, and tripropylene glycol butyl ether (TPGBE) as a co-viscosifier. A new effective strategy for the preparation of the chemical gel was investigated by introducing the alkyl alcohols as organic solvents to effectively dissolve the co-viscosifier. The mixture solution of the co-viscosifier and alkyl alcohols was more effective in the control of viscosity than that of the co-viscosifier only in gel. Here, the alkyl alcohols played a key role as an effective dissolution solvent for the co-viscosifier in the preparation of the chemical gel, resulting in a reducing of the amount of the co-viscosifier and gel time compared with that of the chemical gel prepared without the alkyl alcohols. It was considered that the alkyl alcohols contributed to the effective dissolution of the co-viscosifier as well as the homogeneous mixing in the formation of the gel, while the co-viscosifier in an aqueous media of the chemical decontamination agent solution showed a lower solubility. The decontamination efficiency of the chemical gels prepared in this work using a multi-channel analyzer (MCA) showed a high decontamination efficiency of over ca. 94% and ca. 92% for Co-60 and Cs-137 contaminated on surface of the stainless steel 304, respectively. (authors)

  18. A New Measurement of the $?^0$ Radiative Decay Width

    E-Print Network [OSTI]

    I. Larin; D. McNulty; E. Clinton; P. Ambrozewicz; D. Lawrence; I. Nakagawa; Y. Prok; A. Teymurazyan; A. Ahmidouch; A. Asratyan; K. Baker; L. Benton; A. M. Bernstein; V. Burkert; P. Cole; P. Collins; D. Dale; S. Danagoulian; G. Davidenko; R. Demirchyan; A. Deur; A. Dolgolenko; G. Dzyubenko; R. Ent; A. Evdokimov; J. Feng; M. Gabrielyan; L. Gan; A. Gasparian; S. Gevorkyan; A. Glamazdin; V. Goryachev; V. Gyurjyan; K. Hardy; J. He; M. Ito; L. Jiang; D. Kashy; M. Khandaker; P. Kingsberry; A. Kolarkar; M. Konchatnyi; A. Korchin; W. Korsch; S. Kowalski; M. Kubantsev; V. Kubarovsky; X. Li; P. Martel; V. Matveev; B. Mecking; B. Milbrath; R. Minehart; R. Miskimen; V. Mochalov; S. Mtingwa; S. Overby; E. Pasyuk; M. Payen; R. Pedroni; B. Ritchie; T. E. Rodrigues; C. Salgado; A. Shahinyan; A. Sitnikov; D. Sober; S. Stepanyan; W. Stephens; J. Underwood; A. Vasiliev; V. Vishnyakov; M. Wood; S. Zhou

    2010-09-09T23:59:59.000Z

    High precision measurements of the differential cross sections for $\\pi^0$ photoproduction at forward angles for two nuclei, $^{12}$C and $^{208}$Pb, have been performed for incident photon energies of 4.9 - 5.5 GeV to extract the ${\\pi^0 \\to \\gamma\\gamma}$ decay width. The experiment was done at Jefferson Lab using the Hall B photon tagger and a high-resolution multichannel calorimeter. The ${\\pi^0 \\to \\gamma\\gamma}$ decay width was extracted by fitting the measured cross sections using recently updated theoretical models for the process. The resulting value for the decay width is $\\Gamma{(\\pi^0 \\to \\gamma\\gamma)} = 7.82 \\pm 0.14 ~({\\rm stat.}) \\pm 0.17 ~({\\rm syst.}) ~{\\rm eV}$. With the 2.8% total uncertainty, this result is a factor of 2.5 more precise than the current PDG average of this fundamental quantity and it is consistent with current theoretical predictions.

  19. Stainless Steel 18-10 CO2 Laser Welding And Plasma Diagnostics

    SciTech Connect (OSTI)

    Amar, Taibi [Department of Mechanical Engineering, University of M'sila (Algeria); Laboratory of Industrial Physics, Thermal centre of INSA of Lyon, CETHIL (France); Michel, Laurent [Laboratory of Industrial Physics, Thermal centre of INSA of Lyon, CETHIL (France)

    2008-09-23T23:59:59.000Z

    The welding of materials by CO2 laser took significant considerations in industry, for the reason of the quality of the carried out weldings, and for other many advantages, but the automation of the welding operation requires a control system in real time. The operation of welding is an operation of interaction between the radiation (laser), and the matter (welded part), which is characterized by the vaporization of the matter, formation of the keyhole in material, and appearance of plasma over the material. This study relates to the relation between the welding (molten material) and the plasma which is formed on material. The light emitted by plasma during laser welding was recorded by an OMA detector (Optical Multichannel Analyzer) over a wavelength width of 450 A ring . The analysis of this light allows to determine the composition of this plasma, its dimensions, and the state of its energy according to the laser parameters. The welded material is the stainless steel 18-10, it was found that the intensity of the light emitted by plasma depends on laser power, the welding speed, the flow rate of assist gas. The relation between the plasma and the state of the bead were analyzed for on-line monitoring welding.

  20. Time-resolved measurements of the hot-electron population in ignition-scale experiments on the National Ignition Facility (invited)

    SciTech Connect (OSTI)

    Hohenberger, M., E-mail: mhoh@lle.rochester.edu; Stoeckl, C. [Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States); Albert, F.; Palmer, N. E.; Döppner, T.; Divol, L.; Dewald, E. L.; Bachmann, B.; MacPhee, A. G.; LaCaille, G.; Bradley, D. K. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Lee, J. J. [National Security Technologies LLC, Livermore, California 94551 (United States)

    2014-11-15T23:59:59.000Z

    In laser-driven inertial confinement fusion, hot electrons can preheat the fuel and prevent fusion-pellet compression to ignition conditions. Measuring the hot-electron population is key to designing an optimized ignition platform. The hot electrons in these high-intensity, laser-driven experiments, created via laser-plasma interactions, can be inferred from the bremsstrahlung generated by hot electrons interacting with the target. At the National Ignition Facility (NIF) [G. H. Miller, E. I. Moses, and C. R. Wuest, Opt. Eng. 43, 2841 (2004)], the filter-fluorescer x-ray (FFLEX) diagnostic–a multichannel, hard x-ray spectrometer operating in the 20–500 keV range–has been upgraded to provide fully time-resolved, absolute measurements of the bremsstrahlung spectrum with ?300 ps resolution. Initial time-resolved data exhibited significant background and low signal-to-noise ratio, leading to a redesign of the FFLEX housing and enhanced shielding around the detector. The FFLEX x-ray sensitivity was characterized with an absolutely calibrated, energy-dispersive high-purity germanium detector using the high-energy x-ray source at NSTec Livermore Operations over a range of K-shell fluorescence energies up to 111 keV (U K{sub ?}). The detectors impulse response function was measured in situ on NIF short-pulse (?90 ps) experiments, and in off-line tests.

  1. Fusion of product and process data: Batch-mode and real-time streaming

    SciTech Connect (OSTI)

    Vincent De Sapio; Spike Leonard

    1999-12-01T23:59:59.000Z

    In today's DP product realization enterprise it is imperative to reduce the design-to-fabrication cycle time and cost while improving the quality of DP parts (reducing defects). Much of this challenge resides in the inherent gap between the product and process worlds. The lack of seamless, bi-directional flow of information prevents true concurrency in the product realization world. This report addresses a framework for product-process data fusion to help achieve next generation product realization. A fundamental objective is to create an open environment for multichannel observation of process date, and subsequent mapping of that data onto product geometry. In addition to the sensor-based observation of manufacturing processes, model-based process data provides an important complement to empirically acquired data. Two basic groups of manufacturing models are process physics, and machine kinematics and dynamics. Process physics addresses analytical models that describe the physical phenomena of the process itself. Machine kinematic and dynamic models address the mechanical behavior of the processing equipment. As a secondary objective, an attempt has been made in this report to address part of the model-based realm through the development of an open object-oriented library and toolkit for machine kinematics and dynamics. Ultimately, it is desirable to integrate design definition, with all types of process data; both sensor-based and model-based. Collectively, the goal is to allow all disciplines within the product realization enterprise to have a centralized medium for the fusion of product and process data.

  2. Hadamard multimode optical imaging transceiver

    DOE Patents [OSTI]

    Cooke, Bradly J; Guenther, David C; Tiee, Joe J; Kellum, Mervyn J; Olivas, Nicholas L; Weisse-Bernstein, Nina R; Judd, Stephen L; Braun, Thomas R

    2012-10-30T23:59:59.000Z

    Disclosed is a method and system for simultaneously acquiring and producing results for multiple image modes using a common sensor without optical filtering, scanning, or other moving parts. The system and method utilize the Walsh-Hadamard correlation detection process (e.g., functions/matrix) to provide an all-binary structure that permits seamless bridging between analog and digital domains. An embodiment may capture an incoming optical signal at an optical aperture, convert the optical signal to an electrical signal, pass the electrical signal through a Low-Noise Amplifier (LNA) to create an LNA signal, pass the LNA signal through one or more correlators where each correlator has a corresponding Walsh-Hadamard (WH) binary basis function, calculate a correlation output coefficient for each correlator as a function of the corresponding WH binary basis function in accordance with Walsh-Hadamard mathematical principles, digitize each of the correlation output coefficient by passing each correlation output coefficient through an Analog-to-Digital Converter (ADC), and performing image mode processing on the digitized correlation output coefficients as desired to produce one or more image modes. Some, but not all, potential image modes include: multi-channel access, temporal, range, three-dimensional, and synthetic aperture.

  3. Non destructive multi elemental analysis using prompt gamma neutron activation analysis techniques: Preliminary results for concrete sample

    SciTech Connect (OSTI)

    Dahing, Lahasen Normanshah [School of Applied Physics, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia and Malaysian Nuclear Agency (Nuklear Malaysia), Bangi 43000, Kajang (Malaysia); Yahya, Redzuan [School of Applied Physics, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor (Malaysia); Yahya, Roslan; Hassan, Hearie [Malaysian Nuclear Agency (Nuklear Malaysia), Bangi 43000, Kajang (Malaysia)

    2014-09-03T23:59:59.000Z

    In this study, principle of prompt gamma neutron activation analysis has been used as a technique to determine the elements in the sample. The system consists of collimated isotopic neutron source, Cf-252 with HPGe detector and Multichannel Analysis (MCA). Concrete with size of 10×10×10 cm{sup 3} and 15×15×15 cm{sup 3} were analysed as sample. When neutrons enter and interact with elements in the concrete, the neutron capture reaction will occur and produce characteristic prompt gamma ray of the elements. The preliminary result of this study demonstrate the major element in the concrete was determined such as Si, Mg, Ca, Al, Fe and H as well as others element, such as Cl by analysis the gamma ray lines respectively. The results obtained were compared with NAA and XRF techniques as a part of reference and validation. The potential and the capability of neutron induced prompt gamma as tool for multi elemental analysis qualitatively to identify the elements present in the concrete sample discussed.

  4. Updated User's Guide for Sammy: Multilevel R-Matrix Fits to Neutron Data Using Bayes' Equations

    SciTech Connect (OSTI)

    Larson, Nancy M [ORNL

    2008-10-01T23:59:59.000Z

    In 1980 the multilevel multichannel R-matrix code SAMMY was released for use in analysis of neutron-induced cross section data at the Oak Ridge Electron Linear Accelerator. Since that time, SAMMY has evolved to the point where it is now in use around the world for analysis of many different types of data. SAMMY is not limited to incident neutrons but can also be used for incident protons, alpha particles, or other charged particles; likewise, Coulomb exit hannels can be included. Corrections for a wide variety of experimental conditions are available in the code: Doppler and resolution broadening, multiple-scattering corrections for capture or reaction yields, normalizations and backgrounds, to name but a few. The fitting procedure is Bayes' method, and data and parameter covariance matrices are properly treated within the code. Pre- and post-processing capabilities are also available, including (but not limited to) connections with the Evaluated Nuclear Data Files. Though originally designed for use in the resolved resonance region, SAMMY also includes a treatment for data analysis in the unresolved resonance region.

  5. Diagnostics for liquid lithium experiments in CDX-U

    SciTech Connect (OSTI)

    R. Kaita; P. Efthimion; D. Hoffman; B. Jones; H. Kugel; R. Majeski; T. Munsat; S. Raftopoulos; G. Taylor; J. Timberlake; V. Soukhanovskii; D. Stutman; M. Iovea; M. Finkenthal; R. Doerner; S. Luckhardt; R. Maingi; R. Causey

    2000-06-21T23:59:59.000Z

    A flowing liquid lithium first wall or diverter target could virtually eliminate the concerns with power density and erosion, tritium retention, and cooling associated with solid walls in fusion reactors. To investigate the interaction of a spherical torus plasma with liquid lithium limiters, large area diverter targets, and walls, discharges will be established in the Current Drive Experiment-Upgrade (CDX-U) where the plasma-wall interactions are dominated by liquid lithium surfaces. Among the unique CDX-U lithium diagnostics is a multi-layer mirror (MLM) array, which will monitor the 135 {angstrom} LiIII line for core lithium concentrations. Additional spectroscopic diagnostics include a grazing incidence XUV spectrometer (STRS) and a filterscope system to monitor D{sub {alpha}} and various impurity lines local to the lithium limiter. Profile data will be obtained with a multichannel tangential bolometer and a multipoint Thomson scattering system configured to give enhanced edge resolution. Coupons on th e inner wall of the CDX-U vacuum vessel will be used for surface analysis. A 10,000 frame per second fast visible camera and an IR camera will also be available.

  6. Diagnostics for liquid lithium experiments in CDX-U

    SciTech Connect (OSTI)

    Kaita, R.; Efthimion, P.; Hoffman, D.; Jones, B.; Kugel, H.; Majeski, R.; Munsat, T.; Raftopoulos, S.; Taylor, G.; Timberlake, J. (and others) [and others

    2001-01-01T23:59:59.000Z

    A flowing liquid lithium first wall or divertor target could virtually eliminate the concerns with power density and erosion, tritium retention, and cooling associated with solid walls in fusion reactors. To investigate the interaction of a spherical torus plasma with liquid lithium limiters, large area divertor targets, and walls, discharges will be established in the Current Drive Experiment-Upgrade (CDX-U) where the plasma--wall interactions are dominated by liquid lithium surfaces. Among the unique CDX-U lithium diagnostics is a multilayer mirror (MLM) array, which will monitor the 13.5 nm LiIII line for core lithium concentrations. Additional spectroscopic diagnostics include a grazing incidence extreme ultraviolet (XUV) spectrometer (STRS) and a filterscope system to monitor D{sub {alpha}} and various impurity lines local to the lithium limiter. Profile data will be obtained with a multichannel tangential bolometer and a multipoint Thomson scattering system configured to give enhanced edge resolution. Coupons on the inner wall of the CDX-U vacuum vessel will be used for surface analysis. A 10000 frame per second fast visible camera and an IR camera will also be available.

  7. Realizing one-dimensional quantum and high-frequency transport features in aligned single-walled carbon nanotube ropes

    SciTech Connect (OSTI)

    Ncube, Siphephile; Chimowa, George; Chiguvare, Zivayi; Bhattacharyya, Somnath, E-mail: Somnath.Bhattacharyya@wits.ac.za [Nano-Scale Transport Physics Laboratory, School of Physics and DST/NRF Centre of Excellence in Strong Materials, University of the Witwatersrand, Private Bag 3, WITS 2050, Johannesburg (South Africa)

    2014-07-14T23:59:59.000Z

    The superiority of the electronic transport properties of single-walled carbon nanotube (SWNT) ropes over SWNT mats is verified from low temperature and frequency-dependent transport. The overall change of resistance versus in nanotube mats shows that 3D variable range hopping is the dominant conduction mechanism within the 2–300?K range. The magneto-resistance (MR) is found to be predominantly negative with a parabolic nature, which can also be described by the hopping model. Although the positive upturn of the MR at low temperatures establishes the contribution from quantum interference, the inherent quantum transport in individual tubes is suppressed at elevated temperatures. Therefore, to minimize multi-channel effects from inter-tube interactions and other defects, two-terminal devices were fabricated from aligned SWNT (extracted from a mat) for low temperature transport as well as high-frequency measurements. In contrast to the mat, the aligned ropes exhibit step-like features in the differential conductance within the 80–300?K temperature range. The effects of plasmon propagation, unique to one dimension, were identified in electronic transport as a non-universal power-law dependence of the differential conductance on temperature and source-drain voltage. The complex impedance showed high power transmission capabilities up to 65?GHz as well as oscillations in the frequency range up to 30 GHz. The measurements suggest that aligned SWNT ropes have a realistic potential for high-speed device applications.

  8. Control of a pulse height analyzer using an RDX workstation

    SciTech Connect (OSTI)

    Montelongo, S.; Hunt, D.N.

    1984-12-01T23:59:59.000Z

    The Nuclear Chemistry Division of Lawrence Livermore National laboratory is in the midst of upgrading its radiation counting facilities to automate data acquisition and quality control. This upgrade requires control of a pulse height analyzer (PHA) from an interactive LSI-11/23 workstation running RSX-11M. The PHA is a micro-computer based multichannel analyzer system providing data acquisition, storage, display, manipulation and input/output from up to four independent acquisition interfaces. Control of the analyzer includes reading and writing energy spectra, issuing commands, and servicing device interrupts. The analyzer communicates to the host system over a 9600-baud serial line using the Digital Data Communications link level Protocol (DDCMP). We relieved the RSX workstation CPU from the DDCMP overhead by implementing a DEC compatible in-house designed DMA serial line board (the ISL-11) to communicate with the analyzer. An RSX I/O device driver was written to complete the path between the analyzer and the RSX system by providing the link between the communication board and an application task. The I/O driver is written to handle several ISL-11 cards all operating in parallel thus providing support for control of multiple analyzers from a single workstation. The RSX device driver, its design and use by application code controlling the analyzer, and its operating environment will be discussed.

  9. Conceptual Design Studies of the KSTAR Bay-Nm Cassette and Thomson Scattering Optics

    SciTech Connect (OSTI)

    Feder R., Ellis R., Johnson D., Park H., Lee H.G.

    2005-09-26T23:59:59.000Z

    A Multi-Channel Thomson Scattering System viewing the edge and core of the KSTAR plasma will be installed at the mid-plane port Bay-N. An engineering design study was undertaken at PPPL in collaboration with the Korea Basic Science Institute (KBSI) to determine the optimal optics and cassette design. Design criteria included environmental, mechanical and optical factors. All of the optical design options have common design features; the Thomson Scattering laser, an in-vacuum shutter, a quartz heat shield and primary vacuum window, a set of optical elements and a fiber optic bundle. Neutron radiation damage was a major factor in the choice of competing lens-based and mirror-based optical designs. Both the mirror based design and the lens design are constrained by physical limits of the Bay-N cassette and interference with the Bay-N micro-wave launcher. The cassette will contain the optics and a rail system for maintenance of the optics.

  10. K-Shell Photoabsorption of Magnesium Ions

    E-Print Network [OSTI]

    Hasoglu, M F; Gorczyca, T W

    2013-01-01T23:59:59.000Z

    X-ray photoabsorption cross sections have been computed for all magnesium ions using the R-matrix method. A comparison with the other available data for Mg II- Mg X shows good qualitative agreement in general. However, for the lower ionization stages, and for singly-ionized Mg II in particular, the previous R-matrix results (Witthoeft et al. 2009; Witthoeft et al. 2011) overestimate the K-edge position due to the absence of important orbital relaxation effects in those earlier calculations, and a global shift downward in photon energy of those cross sections is therefore warranted. The resultant resonance shapes are found to be quite similar between the two R-matrix results, on the other hand. The cross sections for Mg I and Mg II are further complicated by the M-shell (n=3) occupancy. As a result, the treatment of spectator Auger decay of 1s-> np resonances using the multichannel quantum defect, optical potential method becomes problematic, and it was necessary to implement an alternative, approximate treatm...

  11. Technical overview of the millimeter-wave imaging reflectometer on the DIII-D tokamak (invited)

    SciTech Connect (OSTI)

    Muscatello, C. M., E-mail: cmuscate@ucdavis.edu; Domier, C. W.; Hu, X.; Luhmann, N. C.; Ren, X.; Riemenschneider, P.; Spear, A.; Valeo, E.; Yu, L. [Department of Electrical and Computer Engineering, University of California Davis, 347 Memorial Un, Davis, California 95616 (United States); Kramer, G. J.; Tobias, B. J. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)

    2014-11-15T23:59:59.000Z

    The two-dimensional mm-wave imaging reflectometer (MIR) on DIII-D is a multi-faceted device for diagnosing electron density fluctuations in fusion plasmas. Its multi-channel, multi-frequency capabilities and high sensitivity permit visualization and quantitative diagnosis of density perturbations, including correlation length, wavenumber, mode propagation velocity, and dispersion. The two-dimensional capabilities of MIR are made possible with 12 vertically separated sightlines and four-frequency operation (corresponding to four radial channels). The 48-channel DIII-D MIR system has a tunable source that can be stepped in 500 ?s increments over a range of 56 to 74 GHz. An innovative optical design keeps both on-axis and off-axis channels focused at the cutoff surface, permitting imaging over an extended poloidal region. The integrity of the MIR optical design is confirmed by comparing Gaussian beam calculations to laboratory measurements of the transmitter beam pattern and receiver antenna patterns. Measurements are presented during the density ramp of a plasma discharge to demonstrate unfocused and focused MIR signals.

  12. Laser for high frequency modulated interferometry

    DOE Patents [OSTI]

    Mansfield, D.K.; Vocaturo, M.; Guttadora, L.J.

    1991-07-23T23:59:59.000Z

    A Stark-tuned laser operating in the 119 micron line of CH[sub 3]OH has an output power of several tens of milliwatts at 30 Watts of pump power while exhibiting a doublet splitting of about ten MHz with the application of a Stark field on the order of 500 volts/cm. This output power allows for use of the laser in a multi-channel interferometer, while its high operating frequency permits the interferometer to measure rapid electron density changes in a pellet injected or otherwise fueled plasma such as encountered in magnetic fusion devices. The laser includes a long far-infrared (FIR) pyrex resonator tube disposed within a cylindrical water jacket and incorporating charged electrodes for applying the Stark field to a gas confined therein. With the electrodes located within the resonator tube, the resonator tube walls are cooled by a flowing coolant without electrical breakdown in the coolant liquid during application of the Stark field. Wall cooling allows for substantially increased FIR output powers. Provision is made for introducing a buffer gas into the resonator tube for increasing laser output power and its operating bandwidth. 10 figures.

  13. Global warming and global dioxide emission: An empirical study

    SciTech Connect (OSTI)

    Linyan Sun [Xian Jiaotong Univ., Shaanxi (China); Wang, M. [Saint Mary`s Univ., Halifax, Nova Scotia (Canada)

    1996-04-01T23:59:59.000Z

    In this paper, the dynamic relationship between global surface temperature (global warming) and global carbon dioxide emission (CO{sub 2}) is modelled and analyzed by causality and spectral analysis in the time domain and frequency domain, respectively. Historical data of global CO{sub 2} emission and global surface temperature anomalies over 129 years from 1860-1988 are used in this study. The causal relationship between the two phenomena is first examined using the Sim and Granger causality test in the time domain after the data series are filtered by ARIMA models. The Granger causal relationship is further scrutinized and confirmed by cross-spectral and multichannel spectral analysis in the frequency domain. The evidence found from both analyses proves that there is a positive causal relationship between the two variables. The time domain analysis suggests that Granger causality exists between global surface temperature and global CO{sub 2} emission. Further, CO{sub 2} emission causes the change in temperature. The conclusions are further confirmed by the frequency domain analysis, which indicates that the increase in CO{sub 2} emission causes climate warming because a high coherence exists between the two variables. Furthermore, it is proved that climate changes happen after an increase in CO{sub 2} emission, which confirms that the increase in CO{sub 2} emission does cause global warming. 27 refs., 10 figs., 5 tabs.

  14. Pulsed, Photonuclear-induced, Neutron Measurements of Nuclear Materials with Composite Shielding

    SciTech Connect (OSTI)

    James Jones; Kevin Haskell; Rich Waston; William Geist; Jonathan Thron; Corey Freeman; Martyn Swinhoe; Seth McConchie; Eric Sword; Lee Montierth; John Zabriskie

    2011-07-01T23:59:59.000Z

    Active measurements were performed using a 10-MeV electron accelerator with inspection objects containing various nuclear and nonnuclear materials available at the Idaho National Laboratory’s Zero Power Physics Reactor (ZPPR) facility. The inspection objects were assembled from ZPPR reactor plate materials to evaluate the measurement technologies for the characterization of plutonium, depleted uranium or highly enriched uranium shielded by both nuclear and non-nuclear materials. A series of pulsed photonuclear, time-correlated measurements were performed with unshielded calibration materials and then compared with the more complex composite shield configurations. The measurements used multiple 3He detectors that are designed to detect fission neutrons between pulses of an electron linear accelerator. The accelerator produced 10-MeV bremsstrahlung X-rays at a repetition rate of 125 Hz (8 ms between pulses) with a 4-us pulse width. All inspected objects were positioned on beam centerline and 100 cm from the X-ray source. The time-correlated data was collected in parallel using both a Los Alamos National Laboratory-designed list-mode acquisition system and a commercial multichannel scaler analyzer. A combination of different measurement configurations and data analysis methods enabled the identification of each object. This paper describes the experimental configuration, the ZPPR inspection objects used, and the various measurement and analysis results for each inspected object.

  15. Subbarrier fusion reactions and many-particle quantum tunneling

    E-Print Network [OSTI]

    K. Hagino; N. Takigawa

    2012-10-17T23:59:59.000Z

    Low energy heavy-ion fusion reactions are governed by quantum tunneling through the Coulomb barrier formed by a strong cancellation of the repulsive Coulomb force with the attractive nuclear interaction between the colliding nuclei. Extensive experimental as well as theoretical studies have revealed that fusion reactions are strongly influenced by couplings of the relative motion of the colliding nuclei to several nuclear intrinsic motions. Heavy-ion subbarrier fusion reactions thus provide a good opportunity to address a general problem on quantum tunneling in the presence of couplings, which has been a popular subject in the past decades in many branches of physics and chemistry. Here we review theoretical aspects of heavy-ion subbarrier fusion reactions from the view point of quantum tunneling in systems with many degrees of freedom. Particular emphases are put on the coupled-channels approach to fusion reactions, and the barrier distribution representation for multi-channel penetrability. We also discuss an application of the barrier distribution method to elucidation of the mechanism of dissociative adsorption of H$_2$ melecules in surface science.

  16. Prognostic Analysis of the Tactical Quiet Generator

    SciTech Connect (OSTI)

    Hively, Lee M [ORNL

    2008-09-01T23:59:59.000Z

    The U.S. Army needs prognostic analysis of mission-critical equipment to enable condition-based maintenance before failure. ORNL has developed and patented prognostic technology that quantifies condition change from noisy, multi-channel, time-serial data. This report describes an initial application of ORNL's prognostic technology to the Army's Tactical Quiet Generator (TQG), which is designed to operate continuously at 10 kW. Less-than-full power operation causes unburned fuel to accumulate on internal components, thereby degrading operation and eventually leading to failure. The first objective of this work was identification of easily-acquired, process-indicative data. Two types of appropriate data were identified, namely output-electrical current and voltage, plus tri-axial acceleration (vibration). The second objective of this work was data quality analysis to avoid the garbage-in-garbage-out syndrome. Quality analysis identified more than 10% of the current data as having consecutive values that are constant, or that saturate at an extreme value. Consequently, the electrical data were not analyzed further. The third objective was condition-change analysis to indicate operational stress under non-ideal operation and machine degradation in proportion to the operational stress. Application of ORNL's novel phase-space dissimilarity measures to the vibration power quantified the rising operational stress in direct proportion to the less-than-full-load power. We conclude that ORNL's technology is an excellent candidate to meet the U.S. Army's need for equipment prognostication.

  17. Use of InSpector{sup TM} 1 1000 Instrument with LaBr{sub 3} for Nuclear Criticality Safety (NCS) Applications at the Westinghouse Hematite Decommissioning Project (HDP) - 13132

    SciTech Connect (OSTI)

    Pritchard, Megan [Nuclear Safety Associates, P.O. Box 471488, Charlotte, NC 28247 (United States)] [Nuclear Safety Associates, P.O. Box 471488, Charlotte, NC 28247 (United States); Guido, Joe [System One Services, 12 Federal St. Ste. 205, Pittsburgh, PA 15212 (United States)] [System One Services, 12 Federal St. Ste. 205, Pittsburgh, PA 15212 (United States)

    2013-07-01T23:59:59.000Z

    The Westinghouse Hematite Decommissioning Project (HDP) is a former nuclear fuel cycle facility that is currently undergoing decommissioning. One aspect of the decommissioning scope is remediation of buried nuclear waste in unlined burial pits. The current Nuclear Criticality Safety program relies on application of criticality controls based on radiological setpoints from a 2 x 2 Sodium Iodide (NaI) detector. Because of the nature of the material buried (Low Enriched Uranium (LEU), depleted uranium, thorium, and radium) and the stringent threshold for application of criticality controls based on waste management (0.1 g {sup 235}U/L), a better method for {sup 235}U identification and quantification has been developed. This paper outlines the early stages of a quick, in-field nuclear material assay and {sup 235}U mass estimation process currently being deployed at HDP. Nuclear material initially classified such that NCS controls are necessary can be demonstrated not to require such controls and dispositioned as desired by project operations. Using Monte Carlo techniques and a high resolution Lanthanum Bromide (LaBr) detector with portable Multi-Channel Analyzer (MCA), a bounding {sup 235}U mass is assigned to basic geometries of nuclear material as it is excavated. The deployment of these methods and techniques has saved large amounts of time and money in the nuclear material remediation process. (authors)

  18. High-resolution laser spectroscopy between 0.9 and 14.3 THz in a supersonic beam: Rydberg-Rydberg transitions of atomic Xe at intermediate n values

    SciTech Connect (OSTI)

    Haase, Christa; Agner, Josef A.; Merkt, Frederic [Laboratorium fuer Physikalische Chemie, ETH Zuerich, 8093 Zuerich (Switzerland)

    2013-06-28T23:59:59.000Z

    A laser-based, pulsed, narrow-band source of submillimeter-wave radiation has been developed that is continuously tunable from 0.1 THz to 14.3 THz. The source is based on difference-frequency mixing in the nonlinear crystal trans-4{sup Prime }-(dimethylamino)-N-methyl-4-stilbazolium tosylate. By varying the pulse length, the bandwidth of the submillimeter-wave radiation can be adjusted between 85 MHz and 2.8 MHz. This new radiation source has been integrated in a vacuum-ultraviolet-submillimeter-ware double-resonance spectrometer, with which low-frequency transitions of atoms and molecules in supersonic beams can be detected mass-selectively by photoionization and time-of-flight mass spectrometry. The properties of the radiation source and spectrometer are demonstrated in a study of 33f Leftwards-Arrow nd Rydberg-Rydberg transitions in Xe with n in the range 16-31. The frequency calibration of the submillimeter-wave radiation was performed with an accuracy of 2.8 MHz. The narrowest lines observed experimentally have a full-width at half-maximum of {approx}3 MHz, which is sufficient to fully resolve the hyperfine structure of the Rydberg-Rydberg transitions of {sup 129}Xe and {sup 131}Xe. A total of 72 transitions were measured in the range between 0.937 THz and 14.245 THz and their frequencies are compared with frequencies calculated by multichannel quantum defect theory.

  19. Investigation of a direction sensitive sapphire detector stack at the 5 GeV electron beam at DESY-II

    E-Print Network [OSTI]

    Karacheban, O; Hempel, M; Henschel, H; Lange, W; Leonard, J L; Levy, I; Lohmann, W; Schuwalow, S

    2015-01-01T23:59:59.000Z

    Extremely radiation hard sensors are needed in particle physics experiments to instrument the region near the beam pipe. Examples are beam halo and beam loss monitoring systems at the Large Hadron Collider, FLASH or XFEL. Artificial diamond sensors are currently widely used as sensors in these systems. In this paper single crystal sapphire sensors are considered as a promising alternative. Industrially grown sapphire wafers are available in large sizes, are of low cost and, like diamond sensors, can be operated without cooling. Here we present results of an irradiation study done with sapphire sensors in a high intensity low energy electron beam. Then, a multichannel direction-sensitive sapphire detector stack is described. It comprises 8 sapphire plates of 1 cm^2 size and 525 micrometer thickness, metallized on both sides, and apposed to form a stack. Each second metal layer is supplied with a bias voltage, and the layers in between are connected to charge-sensitive preamplifiers. The performance of the dete...

  20. Analytical Chemistry Laboratory (ACL) procedure compendium. Volume 3, Inorganic instrumental methods

    SciTech Connect (OSTI)

    Not Available

    1993-08-01T23:59:59.000Z

    The methods cover: C in solutions, F (electrode), elements by atomic emission spectrometry, inorganic anions by ion chromatography, Hg in water/solids/sludges, As, Se, Bi, Pb, data calculations for SST (single shell tank?) samples, Sb, Tl, Ag, Pu, O/M ratio, ignition weight loss, pH value, ammonia (N), Cr(VI), alkalinity, U, C sepn. from soil/sediment/sludge, Pu purif., total N, water, C and S, surface Cl/F, leachable Cl/F, outgassing of Ge detector dewars, gas mixing, gas isotopic analysis, XRF of metals/alloys/compounds, H in Zircaloy, H/O in metals, inpurity extraction, reduced/total Fe in glass, free acid in U/Pu solns, density of solns, Kr/Xe isotopes in FFTF cover gas, H by combustion, MS of Li and Cs isotopes, MS of lanthanide isotopes, GC operation, total Na on filters, XRF spectroscopy QC, multichannel analyzer operation, total cyanide in water/solid/sludge, free cyanide in water/leachate, hydrazine conc., ICP-MS, {sup 99}Tc, U conc./isotopes, microprobe analysis of solids, gas analysis, total cyanide, H/N{sub 2}O in air, and pH in soil.

  1. Updated user`s guide for SAMMY: multilevel R-matrix fits to neutron data using Bayes` equation

    SciTech Connect (OSTI)

    Larson, N.M.

    1996-10-01T23:59:59.000Z

    In 1980 the multilevel multichannel R-matrix code SAMMY was released for use in analysis of neutron data at the Oak Ridge Electron Linear Accelerator. Since that time, SAMMY has undergone significant modifications: (1) User-friendly options have been incorporated to streamline common operations and to protect a run from common user errors, (2) The Reich-Moore formalism has been extended to include an optional logarithmic parameterization of the external R-matrix, for which any or all parameters may be varied, (3) the ability to vary sample thickness, effective temperature, matching radius, and/or resolution-broadening parameters has been incorporated, (4) to avoid loss of information (i.e. computer round-off errors) between runs, the ``covariance file`` now includes precise values for al variables, (5) Unused but correlated variables may be included in the analysis. Because of these and earlier changes, the 1980 SAMMY manual is now hopelessly obsolete. This report is intended to be complete documentation for the current version of SAMMY. Its publication in looseleaf form will permit updates to the manual to be made concurrently with updates to the code itself, thus eliminating most of the time lag between update and documentation.

  2. Microchannel Reactor System for Catalytic Hydrogenation

    SciTech Connect (OSTI)

    Adeniyi Lawal; Woo Lee; Ron Besser; Donald Kientzler; Luke Achenie

    2010-12-22T23:59:59.000Z

    We successfully demonstrated a novel process intensification concept enabled by the development of microchannel reactors, for energy efficient catalytic hydrogenation reactions at moderate temperature, and pressure, and low solvent levels. We designed, fabricated, evaluated, and optimized a laboratory-scale microchannel reactor system for hydrogenation of onitroanisole and a proprietary BMS molecule. In the second phase of the program, as a prelude to full-scale commercialization, we designed and developed a fully-automated skid-mounted multichannel microreactor pilot plant system for multiphase reactions. The system is capable of processing 1 – 10 kg/h of liquid substrate, and an industrially relevant immiscible liquid-liquid was successfully demonstrated on the system. Our microreactor-based pilot plant is one-of-akind. We anticipate that this process intensification concept, if successfully demonstrated, will provide a paradigm-changing basis for replacing existing energy inefficient, cost ineffective, environmentally detrimental slurry semi-batch reactor-based manufacturing practiced in the pharmaceutical and fine chemicals industries.

  3. Annual Report Co-Directors, University of Wisconsin-Madison

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Annual Report 2007 Co-Directors, University of Wisconsin-Madison Dr. Molly Carnes, Jean Manchester .................................................................................................9 C. Funding Sources.............................................................................................12 V. WISELI Management and Infrastructure............12 A. Funding Sources

  4. Universal alignment of hydrogen levels in semiconductors,

    E-Print Network [OSTI]

    .............................................................. Universal alignment of hydrogen ............................................................................................................................................................................. Hydrogen strongly affects the electronic and structural proper- ties of many materials. It can bind passivation is crucial to the performance of many photovoltaic and electronic devices1,2 . A fuller

  5. A summary of demersal fish tagging data

    E-Print Network [OSTI]

    Report no.135 G. Burt, D. Goldsmith and M. Armstrong #12;#12;A summary of demersal fish tagging data. Armstrong August 2006 #12;This report should be cited as: Burt, G., Goldsmith, D. and Armstrong, M., 2006

  6. Mapping quantum-classical Liouville equation: Projectors and trajectories Aaron Kelly, Ramses van Zon, Jeremy Schofield, and Raymond Kapral

    E-Print Network [OSTI]

    Schofield, Jeremy

    Mapping quantum-classical Liouville equation: Projectors and trajectories Aaron Kelly, Ramses van: Projectors and trajectories Aaron Kelly,1,2,a) Ramses van Zon,1,3,b) Jeremy Schofield,1,c) and Raymond Kapral

  7. A Critical Examination and Revisioning of Minority Health Frameworks, Research Methodologies, and Intervention Models Addressing South Asian American Health Disparities

    E-Print Network [OSTI]

    Mukherjea, Arnab

    2010-01-01T23:59:59.000Z

    cancer, effects on heart attack and stroke are not a widelythis product. E.1.2a. Heart attack Yes No Don‘t know/Notdisease, including heart attack, cardiac arrest, and

  8. ISSN 1759-9660 www.rsc.org/methods Volume 5 | Number 13 | 7 July 2013 | Pages 31553424

    E-Print Network [OSTI]

    and storage system for point of care molecular diagnostics #12;A portable, pressure driven, room temperature nucleic acid extraction and storage system for point of care molecular diagnostics Samantha Byrnes,b Andy

  9. A fast algorithm for approximating the ground state energy on a quantum computer Anargyros Papageorgiou,1,

    E-Print Network [OSTI]

    , Columbia University, New York, NY 10027, USA. (Dated: May 11, 2011) Estimating the ground state energy#12;A fast algorithm for approximating the ground state energy on a quantum computer Anargyros

  10. Geology 331 Paleontology

    E-Print Network [OSTI]

    Kammer, Thomas

    dinosaur eggs in Patagonia #12;A single egg laying on an outcrop #12;Dinosaur developing in the egg #12;Researcher working on a nest of sauropod dinosaur eggs #12;Mother and hatchlings in Patagonia sometime

  11. Measurements, Calculations, and Database Storage and Retrieval

    E-Print Network [OSTI]

    , state class id Purpose: Concept building, locations for Tier 2 samples #12;A three-tiered sampling test augmented by "tier 2" above Purpose: Create data ranges to populate ESIS for benchmark data

  12. PROJECT SUPPORTED DEPARTMENT OF OCEAN DEVELOPMENT

    E-Print Network [OSTI]

    Harinarayana, T.

    GEOPHYSICAL RESEARCH INSTITUTE (Council of Scientific and Industrial Research) (An ISO 9001:2000 Organization of Scientific and Industrial Research) (An ISO 9001:2000 Organization) Hyderabad- 500 606, India June 2010 #12;A

  13. bbkThe Birkbeck magazine Issue 22, Summer 2007 Happy Birthday, Mr President

    E-Print Network [OSTI]

    Crawford, Ian

    a greener place ALUMNI NEWS Crime report 12 A Scottish Chief Constable on his Birkbeck experience In a class. This is my last edition of BBK; Catherine Stevens returns to her editorial role in the next issue. #12

  14. IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 43, NO. 5, SEPTEMBER 1997 1721 IV. TRUNCATION ERRORS

    E-Print Network [OSTI]

    Kulkarni, Sanjeev

    . 8, pp. 143­158, 1965. [12] A. I. Zayed, Advances in Shannon's Sampling Theorem. Boca Raton, FL: CRCGraw-Hill, 1965. [14] , Generalized Integral Transformations. New York: Dover, 1987. Covering Numbers for Real

  15. Cultural Heritage in the Crosshairs: Protecting Cultural Property during Conflict provides case studies of Cultural

    E-Print Network [OSTI]

    Protection. Dr. Kila, has undertaken cultural rescue missions in Iraq, Macedonia, Egypt and Libya: The Case of Iraq" by B. Isakhan Chapter 12: "A Report on Archaeological Site Stability and Security

  16. Description of 2003 CBECS Detailed Tables and Categories of Data

    Gasoline and Diesel Fuel Update (EIA)

    floorspace heated, cooled, and lit, and energy-using equipment types (heating, cooling, water heating, lighting, and refrigeration). Tables C1-C12 and C1A-C12A contain energy usage...

  17. E-Print Network 3.0 - assembly bottom nozzle Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    jet 12;A.Fabich, CERN, Dec 2002 Jet... traverses Bmax Distance from nozzle 1 cm 0 Tesla This qualitative behaviour can be observed in all events... . 10Tesla B-field...

  18. Institute for Engineering and Systems Sciences

    E-Print Network [OSTI]

    Canet, Léonie

    Sciences #12;A policy of international cooperation The Institute is engaged in intense international many different forms, ranging from the simple exchange of researchers to International Joint Units joint publications in prestigious scientific journals, the setting up of scientific platforms

  19. Wintertime pytoplankton bloom in the Subarctic Pacific supported by continental margin iron

    E-Print Network [OSTI]

    Lam, Phoebe J.; Bishop, James K.B.; Henning, Cara C.; Marcus, Matthew A.; Waychunas, Glenn A.; Fung, Inez

    2008-01-01T23:59:59.000Z

    synchrotron x-ray fluorescence (XRF) microprobe at beamline12 . A typical 1 mm 2 XRF map represented ~1/50,000 of theand particulate mass are known. XRF analysis of mixed layer

  20. SUSTAINABLE A university for sustainable development

    E-Print Network [OSTI]

    Johannesson, Henrik

    THE SUSTAINABLE UNIVERSITY #12;A university for sustainable development The University contribution to a sustainable future. By systematically integrating sustainable development into research. The University of Gothenburg's Vision 2020 confirms that sustainable development is important; we always consider

  1. THREE LECTURES ON MACROSCOPIC ASPECTS OF NUCLEAR DYNAMICS

    E-Print Network [OSTI]

    Swiatecki, W.J.

    2010-01-01T23:59:59.000Z

    would have been found: M A A m Vim a where M^ = pR /)l [12].a damped harmonic oscillator: V*m *m Vim = ° " The motion is

  2. The near infrared 12 1 electronic transition

    E-Print Network [OSTI]

    Maier, John Paul

    The near infrared 12 A00 2 X2 A0 1 electronic transition of B3 in a neon matrix Anton Batalov, Jan applying a double reflection technique. The light beam reflects from the metal surface of the substrate

  3. airborne geophysical survey: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    V; Vaalsta, Timo P; Li, Ju; Blair, David G 2011-01-01 12 A Virtual Excavation: Combining 3D Immersive Virtual Reality and Geophysical Surveying Computer Technologies and...

  4. airborne geophysical surveys: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    V; Vaalsta, Timo P; Li, Ju; Blair, David G 2011-01-01 12 A Virtual Excavation: Combining 3D Immersive Virtual Reality and Geophysical Surveying Computer Technologies and...

  5. Modeling of High Efficiency Clean Combustion Engines

    Broader source: Energy.gov (indexed) [DOE]

    2007. 12. A Numerical Investigation into the Anomalous Slight NOx Increase when Burning Biodiesel: A New (Old) Theory, George A. Ban-Weiss, J.Y. Chen, Bruce A. Buchholz, Robert...

  6. Piecewise Linear Hypersurfaces using the Marching Cubes Jonathan C. Roberts a and Steve Hill b

    E-Print Network [OSTI]

    Kent, University of

    Hill b a University of Kent at Canterbury, Computing Laboratory, Canterbury, England, UK. b Radan steve.hill@uk.radan.com #12; A two dimensional contour on a map, representing a particular height above

  7. Technische Universitat ChemnitzZwickau DFGForschergruppe ``SPC'' \\Delta Fakultat fur Mathematik

    E-Print Network [OSTI]

    Chemnitz, Technische Universität

    Technische Universit¨at Chemnitz­Zwickau DFG­Forschergruppe ``SPC'' \\Delta Fakult¨at f­Forschergruppe ``Scientific Parallel Computing'' SPC 95 22 Oktober 1995 #12; A Collection of Benchmark Examples

  8. MINT-MIS2007 / TSMMW2007 / MilliLab Workshop February 26-27, 2007, Seoul, Korea

    E-Print Network [OSTI]

    Yang, Kyounghoon

    simulator (Silvaco). The insertion loss and isolation characteristics on the single pole single throw (SPST and Silvaco simulation result. 183 #12;(a) (b) Fig. 2. (a) Schematic cross-sectional view and (b) SEM image

  9. LA Final 2013_la02_02-20-04

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    multiple conceptual war- head design options for implementation in the Air Force Mk12A reentry vehicle and adaptable to the Navy Mk5. System archi- tectures and layouts were...

  10. untitled

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    GT-194-1 was launched from Vandenberg Air Force Base on Aug. 13, 2008, carrying two W78Mk12A Joint Test Assembly (JTA) reentry vehicles - a high-fidelity JTA5 and an instru-...

  11. Hydrodynamic models for San Francisco Bay: An overview of what we can model, when

    E-Print Network [OSTI]

    on the domain (SF Bay) #12;A Grid: Northern SF Bay/Golden Gate ChuaandFringer(2011) Finest resolution: 10 m average Thermal front near Dumbarton Bridge #12;More complicated models: Sediment transport in South SF

  12. Payroll Manager Ext. 6-1104

    E-Print Network [OSTI]

    Oregon, University of

    calculations will require a review to determine pay received vs. furlough days taken. #12;All requests email or by leave request form #12; A new form, Mandatory Unpaid Leave Program Election Sheet

  13. E-Print Network 3.0 - amplifiers chain nonlinearity Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of California at San Diego Collection: Engineering 12 A low-noise series-array Josephson junction parametric amplifier B. Yurke, M. L. Roukes,a) Summary: consisted of a series...

  14. BPO Inputs to ITER Design Review on Pellet Pacing, RMP and RWM Coils,

    E-Print Network [OSTI]

    by Energy Loss · Loarte estimated the maximum fueling rate consistent with a convective power loss to ITER. · Convective power loss constrains to 5.4 1022 atoms/s consistent with Q=10 performance. #12;A

  15. The Greening of the Middle Kingdom: The Story of Energy Efficiency in China

    E-Print Network [OSTI]

    Zhou, Nan

    2010-01-01T23:59:59.000Z

    1/2/a7612e71ef7f84b4cade01abbd34106b. Sinton, J. , and M.promote energy efficiency see Sinton and Levine (1998). It

  16. Bonus Point Exercise 3 Alessandro Abate

    E-Print Network [OSTI]

    Abate, Alessandro

    sc4026 Bonus Point Exercise 3 Alessandro Abate a.abate@tudelft.nl Solomon Zegeye s Exercise Session 3 ­ sc4026 #12;A. Abate, S.K. Zegeye Observability and Observer Design Consider an LTI

  17. Gilbert Stork: Explorations into Position Selectivity

    E-Print Network [OSTI]

    Stoltz, Brian M.

    Regiospecific deprotonation & trapping with saturated ketones · -Vetivone Cyano-epoxide and allylic-Patchouli alcohol · (+)-Digitoxigenin Radical cyclization to form a temporary ring Mixed acetal linkage · 12a

  18. Morbi Posuere [Insert Date

    E-Print Network [OSTI]

    Boynton, Walter R.

    TUARINE - AND Environmental SCIENCES (MEES) Program University of Maryland Center FOR ENVIRONMENTAL SCIENCE (UMCES) #12;A ...........................................................................4 The Center for Environmental Science .............................................4 The Marine Estuarine and Environmental Sciences Program Program Overview

  19. DFG IUSS SYMPOSIUM Advances of Molecular Modeling

    E-Print Network [OSTI]

    Sparks, Donald L.

    density functional theory calculations implemented in Gaussian 03. Theoretical XANES simulations were for Soil Research 2009 Book of Abstracts #12;A quantum chemical and X-ray absorption spectroscopy

  20. A Trade Space Model for Robotic Lunar Exploration

    E-Print Network [OSTI]

    SSL # 11-10 #12;#12;A Trade Space Model for Robotic Lunar Exploration Zachary James Bailey, David W. Miller June 2010 SSL # 11-10 This work is based with minor corrections on the text of the thesis