National Library of Energy BETA

Sample records for range 5-16 kev

  1. Neutron Total Cross Sections of {sup 235}U From Transmission Measurements in the Energy Range 2 keV to 300 keV and Statistical Model Analysis of the Data

    SciTech Connect (OSTI)

    Derrien, H.; Harvey, J.A.; Larson, N.M.; Leal, L.C.; Wright, R.Q.

    2000-05-01

    The average {sup 235}U neutron total cross sections were obtained in the energy range 2 keV to 330 keV from high-resolution transmission measurements of a 0.033 atom/b sample.1 The experimental data were corrected for the contribution of isotope impurities and for resonance self-shielding effects in the sample. The results are in very good agreement with the experimental data of Poenitz et al.4 in the energy range 40 keV to 330 keV and are the only available accurate experimental data in the energy range 2 keV to 40 keV. ENDF/B-VI evaluated data are 1.7% larger. The SAMMY/FITACS code 2 was used for a statistical model analysis of the total cross section, selected fission cross sections and data in the energy range 2 keV to 200 keV. SAMMY/FITACS is an extended version of SAMMY which allows consistent analysis of the experimental data in the resolved and unresolved resonance region. The Reich-Moore resonance parameters were obtained 3 from a SAMMY Bayesian fits of high resolution experimental neutron transmission and partial cross section data below 2.25 keV, and the corresponding average parameters and covariance data were used in the present work as input for the statistical model analysis of the high energy range of the experimental data. The result of the analysis shows that the average resonance parameters obtained from the analysis of the unresolved resonance region are consistent with those obtained in the resolved energy region. Another important result is that ENDF/B-VI capture cross section could be too small by more than 10% in the energy range 10 keV to 200 keV.

  2. Neutron Resonance Parameters of 238U and the Calculated Cross Sections from the Reich-Moore Analysis of Experimental Data in the Neutron Energy Range from 0 keV to 20 keV

    SciTech Connect (OSTI)

    Derrien, H

    2005-12-05

    The neutron resonance parameters of {sup 238}U were obtained from a SAMMY analysis of high-resolution neutron transmission measurements and high-resolution capture cross section measurements performed at the Oak Ridge Electron Linear Accelerator (ORELA) in the years 1970-1990, and from more recent transmission and capture cross section measurements performed at the Geel Linear Accelerator (GELINA). Compared with previous evaluations, the energy range for this resonance analysis was extended from 10 to 20 keV, taking advantage of the high resolution of the most recent ORELA transmission measurements. The experimental database and the method of analysis are described in this report. The neutron transmissions and the capture cross sections calculated with the resonance parameters are compared with the experimental data. A description is given of the statistical properties of the resonance parameters and of the recommended values of the average parameters. The new evaluation results in a slight decrease of the effective capture resonance integral and improves the prediction of integral thermal benchmarks by 70 pcm to 200 pcm.

  3. Inelastic processes in Na$^{+}-$Ne, Ar and Ne$^{+},$ Ar$^{+}-$Na collisions in energy range $0.5-14$ keV

    E-Print Network [OSTI]

    Lomsadze, R A; Kezerashvili, R Ya

    2015-01-01

    Absolute cross sections for charge-exchange, ionization and excitation in Na$% ^{+}-$Ne and Na$^{+}-$Ar collisions were measured in the ion energy range $% 0.5-10$ keV using a refined version of a capacitor method, and collision and optical spectroscopy methods simultaneously in the same experimental set-up. Ionization cross sections for Ne$^{+}-$Na and Ar$^{+}-$Na collisions are measured at the energies of $2-14$ keV using a crossed-beam spectroscopy method. The experimental data and the schematic correlation diagrams are used to analyze and determine the mechanisms for these processes. For the charge-exchange process in Na$^{+}$ $-$Ar collisions two nonadiabatic regions are revealed and mechanisms responsible for these regions are explained. Structural peculiarity on the excitation function for the resonance lines of argon atoms in Na$^{+}$ $-$Ar collisions are observed and the possible mechanisms of this phenomenon are explored. The measured ionization cross sections for Na$^{+}-$Ne and Ne$^{+}-$Na collisi...

  4. The feasibility of obtaining very short pulsed beams in the energy range 300-600 keV from the 3 MeV pulsed Van de Graaff accelerator (I.B.I.S)

    E-Print Network [OSTI]

    Porter, D R; Porter, D R no 1; Waring, S no 1

    1975-01-01

    The feasibility of obtaining very short pulsed beams in the energy range 300-600 keV from the 3 MeV pulsed Van de Graaff accelerator (I.B.I.S)

  5. First INTEGRAL observations of V404 Cygni during the 2015 outburst : spectral behavior in the 20 - 650 keV energy range

    E-Print Network [OSTI]

    Roques, Jean-Pierre; Bazzano, Angela; Fiocchi, Mariateresa; Natalucci, Lorenzo; Ubertini, Pietro

    2015-01-01

    In June 2015, the source V404 Cygni (= GS2023+38) underwent an extraordinary outburst. We present the results obtained during the first revolution dedicated to this target by the INTEGRAL mission, and focus on the spectral behavior in the hard X-ray domain, using both SPI and IBIS instruments. The source exhibits extreme variability, and reaches fluxes of several tens of Crab. However, the emission between 20 and 650 keV can be understood in terms of two main components, varying on all the observable timescales, similar to what is observed in the persistent black hole system Cyg X-1. The low energy component (up to ~ 200 keV) presents a rather unusual shape, probably due to the intrinsic source variability. Nonetheless, a satisfactory description is obtained with a Comptonization model, if an unusually hot population of seed photons ($kT_0$ ~ 7 keV) is introduced. Above this first component, a clear excess extending up to 400-600 keV leads us to investigate a scenario where an additional (cutoff) power law co...

  6. Measurement of the x-ray mass attenuation coefficient and determination of the imaginary component of the atomic form factor of tin over the energy range of 29-60 keV

    SciTech Connect (OSTI)

    Jonge, Martin D. de; Tran, Chanh Q.; Chantler, Christopher T.; Barnea, Zwi; Dhal, Bipin B.; Paterson, David; Kanter, Elliot P.; Southworth, Stephen H.; Young, Linda; Beno, Mark A.; Linton, Jennifer A.; Jennings, Guy [X-Ray Operations and Research, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439 (United States); School of Physics, University of Melbourne, Victoria 3010 (Australia); Australian Synchrotron Project, Major Projects Victoria, 800 Blackburn Road, Clayton, Victoria 3168 (Australia); Chemistry Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439 (United States); BESSRC-CAT, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439 (United States)

    2007-03-15

    We use the x-ray extended-range technique (XERT) [C. T. Chantler et al., Phys. Rev. A 64, 062506 (2001)] to measure the mass attenuation coefficients of tin in the x-ray energy range of 29-60 keV to 0.04-3 % accuracy, and typically in the range 0.1-0.2 %. Measurements made over an extended range of the measurement parameter space are critically examined to identify, quantify, and correct a number of potential experimental systematic errors. These results represent the most extensive experimental data set for tin and include absolute mass attenuation coefficients in the regions of x-ray absorption fine structure, extended x-ray absorption fine structure, and x-ray absorption near-edge structure. The imaginary component of the atomic form factor f{sub 2} is derived from the photoelectric absorption after subtracting calculated Rayleigh and Compton scattering cross sections from the total attenuation. Comparison of the result with tabulations of calculated photoelectric absorption coefficients indicates that differences of 1-2 % persist between calculated and observed values.

  7. The solar wind charge-transfer X-ray emission in the 1/4 keV energy range: inferences on Local Bubble hot gas at low Z

    E-Print Network [OSTI]

    D. Koutroumpa; R. Lallement; J. C. Raymond; V. Kharchenko

    2008-12-19

    We present calculations of the heliospheric SWCX emission spectra and their contributions in the ROSAT 1/4 keV band. We compare our results with the soft X-ray diffuse background (SXRB) emission detected in front of 378 identified shadowing regions during the ROSAT All-Sky Survey (Snowden et al. 2000). This foreground component is principally attributed to the hot gas of the so-called Local Bubble (LB), an irregularly shaped cavity of ~50-150 pc around the Sun, which is supposed to contain ~10^6 K plasma. Our results suggest that the SWCX emission from the heliosphere is bright enough to account for most of the foreground emission towards the majority of low galactic latitude directions, where the LB is the least extended. In a large part of directions with galactic latitude above 30deg the heliospheric SWCX intensity is significantly smaller than the measured one. However, the SWCX R2/R1 band ratio differs slightly from the data in the galactic center direction, and more significantly in the galactic anti-centre direction where the observed ratio is the smallest. Assuming that both SWCX and hot gas emission are present and their relative contributions vary with direction, we tested a series of thermal plasma spectra for temperatures ranging from 10^5 to 10^6.5 K and searched for a combination of SWCX spectra and thermal emission matching the observed intensities and band ratios, while simultaneously being compatible with O VI emission measurements. In the frame of collisional equilibrium models and for solar abundances, the range we derive for hot gas temperature and emission measure cannot reproduce the Wisconsin C/B band ratio. We emphasize the need for additional atomic data, describing consistently EUV and X-ray photon spectra of the charge-exchange emission of heavier solar wind ions.

  8. [FIXED] perl 5.16.0 File::Glob() causes crashes

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

    perl 5.16.0 File::Glob() causes crashes FIXED perl 5.16.0 File::Glob() causes crashes August 15, 2013 by Doug Jacobsen (1 Comments) There is an issue with the default modules...

  9. JUVENILE SALMON MIGRATION SECTION 5 FISH AND WILDLIFE PROGRAM 5-16 September 13, 1995

    E-Print Network [OSTI]

    JUVENILE SALMON MIGRATION SECTION 5 FISH AND WILDLIFE PROGRAM 5-16 September 13, 1995 blank page #12;SECTION 5 JUVENILE SALMON MIGRATION September 13, 1995 5-16 FISH AND WILDLIFE PROGRAM temperature MIGRATION SECTION 5 FISH AND WILDLIFE PROGRAM 5-17 September 13, 1995 program. If there are conflicting

  10. On the 17-keV neutrino

    SciTech Connect (OSTI)

    Hime, A.

    1993-04-01

    A brief review on the status of the 17-keV neutrino is presented. Several different experiments found spectral distortions which were consistently interpreted as evidence for a heavy neutrino admixture in {beta} decay. Recent experiments, however, rule out the existence of a 17-keV neutrino as well as escaping criticisms of earlier null results. Moreover, the majority of positive results have been reinterpreted in terms of instrumental effects, despite the need for a different explanation in each case. Anomalies persist in the low energy region of the tritium spectrum which deserve further investigation.

  11. On the 17-keV neutrino

    SciTech Connect (OSTI)

    Hime, A.

    1993-04-01

    A brief review on the status of the 17-keV neutrino is presented. Several different experiments found spectral distortions which were consistently interpreted as evidence for a heavy neutrino admixture in [beta] decay. Recent experiments, however, rule out the existence of a 17-keV neutrino as well as escaping criticisms of earlier null results. Moreover, the majority of positive results have been reinterpreted in terms of instrumental effects, despite the need for a different explanation in each case. Anomalies persist in the low energy region of the tritium spectrum which deserve further investigation.

  12. Charge fraction measurements for 2.4-35 keV Arq+ (q=2-13) projectiles

    E-Print Network [OSTI]

    Charge fraction measurements for 2.4-35 keV Arq+ (q=2-13) projectiles backscattered from Au(110) with incident energies in the range 2.4-35 keV, that have been 120 degrees backscattered from Au(110) in quasi

  13. Checking Potassium origin of new emission line at 3.5 keV with K XIX line complex at 3.7 keV

    E-Print Network [OSTI]

    Dmytro Iakubovskyi

    2015-07-17

    Whether the new line at ~3.5 keV, recently detected in different samples of galaxy clusters, Andromeda galaxy and central part of our Galaxy, is due to Potassium emission lines, is now unclear. By using the latest astrophysical atomic emission line database AtomDB v. 3.0.2, we show that the most prospective method to directly check its Potassium origin will be the study of K XIX emission line complex at ~3.7 keV with future X-ray imaging spectrometers such as Soft X-ray spectometer on-board Astro-H mission or microcalorimeter on-board Micro-X sounding rocket experiment. To further reduce the remaining (factor ~3-5) uncertainty of the 3.7/3.5 keV ratio one should perform more precise modeling including removal of significant spatial inhomogeneities, detailed treatment of background components, and further extension of the modeled energy range.

  14. Checking Potassium origin of new emission line at 3.5 keV with K XIX line complex at 3.7 keV

    E-Print Network [OSTI]

    Iakubovskyi, Dmytro

    2015-01-01

    Whether the new line at ~3.5 keV, recently detected in different samples of galaxy clusters, Andromeda galaxy and central part of our Galaxy, is due to Potassium emission lines, is now unclear. By using the latest astrophysical atomic emission line database AtomDB v. 3.0.2, we show that the most prospective method to directly check its Potassium origin will be the study of K XIX emission line complex at ~3.7 keV with future X-ray imaging spectrometers such as Soft X-ray spectometer on-board Astro-H mission or microcalorimeter on-board Micro-X sounding rocket experiment. To further reduce the remaining (factor ~3-5) uncertainty of the 3.7/3.5 keV ratio one should perform more precise modeling including removal of significant spatial inhomogeneities, detailed treatment of background components, and further extension of the modeled energy range.

  15. Request for Disability Housing/Dining Accommodations www.rochester.edu/eoc/HousingDining.html Reviewed: 5/16/2013

    E-Print Network [OSTI]

    Cantlon, Jessica F.

    Request for Disability Housing/Dining Accommodations www.rochester.edu/eoc/HousingDining.html Reviewed: 5/16/2013 REQUEST FOR DISABILITY HOUSING AND DINING ACCOMMODATIONS Please complete this form://www.rochester.edu/eoc/hdaccommodation.html for detailed information regarding requesting disability-related housing or dining accommodations, including

  16. Steady State Sputtering Yields and Surface Compositions of Depleted Uranium and Uranium Carbide bombarded by 30 keV Gallium or 16 keV Cesium Ions.

    SciTech Connect (OSTI)

    Siekhaus, W. J.; Teslich, N. E.; Weber, P. K.

    2014-10-23

    Depleted uranium that included carbide inclusions was sputtered with 30-keV gallium ions or 16-kev cesium ions to depths much greater than the ions’ range, i.e. using steady-state sputtering. The recession of both the uranium’s and uranium carbide’s surfaces and the ion corresponding fluences were used to determine the steady-state target sputtering yields of both uranium and uranium carbide, i.e. 6.3 atoms of uranium and 2.4 units of uranium carbide eroded per gallium ion, and 9.9 uranium atoms and 3.65 units of uranium carbide eroded by cesium ions. The steady state surface composition resulting from the simultaneous gallium or cesium implantation and sputter-erosion of uranium and uranium carbide were calculated to be U??Ga??, (UC)??Ga?? and U??Cs?, (UC)??Cs??, respectively.

  17. 5.16: LIBRARY RETENTION, TENURE AND PROMOTIONS CRITERIA Approved by Library Faculty, Department Co-Chairs, and University Librarian 9/21/06

    E-Print Network [OSTI]

    5.16: LIBRARY RETENTION, TENURE AND PROMOTIONS CRITERIA Approved by Library Faculty, Department Co in Library Assignment and amplifications are noted below for Professional Achievement and Growth & Research Libraries (ACRL), the national organization associated with academic librarians. For tenure

  18. Secondary ion emission under keV carbon cluster bombardment 

    E-Print Network [OSTI]

    Locklear, Jay Edward

    2006-10-30

    Secondary ion mass spectrometry (SIMS) is a surface analysis technique capable of providing isotopic and molecular information. SIMS uses keV projectiles to impinge upon a sample resulting in secondary ion emission from ...

  19. keV Warm Dark Matter via the Supersymmetric Higgs Portal

    E-Print Network [OSTI]

    John McDonald; Narendra Sahu

    2009-05-14

    Warm dark matter (WDM) may resolve the possible conflict between observed galaxy halos and the halos produced in cold dark matter (CDM) simulations. Here we present an extension of MSSM to include WDM by adding a gauge singlet fermion, \\bar{\\chi}, with a portal-like coupling to the MSSM Higgs doublets. This model has the property that the dark matter is {\\it necessarily warm}. In the case where M_{\\bar{\\chi}} is mainly due to electroweak symmetry breaking, the \\bar{\\chi} mass is completely determined by its relic density and the reheating temperature, T_R. For 10^2 GeV < T_{R} < 10^{5} GeV$, the range allowed by \\bar{chi} production via thermal Higgs annihilation, the \\bar{\\chi} mass is in the range 0.3-4 keV, precisely the range required for WDM. The primordial phase-space density, Q, can directly account for that observed in dwarf spheroidal galaxies, Q \\approx 5 x 10^{6}(eV/cm^3)/(km/s)^3,, when the reheating temperature is in the range T_R \\approx 10-100 TeV, in which case M_{\\bar{\\chi}} \\approx 0.45 keV. The free-streaming length is in the range 0.3-4 Mpc, which can be small enough to alleviate the problems of overproduction of galaxy substructure and low angular momentum of CDM simulations.

  20. Hydrogen-Atom Excitation and Ionization by Proton Impact in 50-Kev to 200-Kev Energy Region 

    E-Print Network [OSTI]

    Fitchard, E.; Ford, A. Lewis; Reading, John F.

    1977-01-01

    % A VOLUME 16, N UMBER 8 SEPTEMBER 1977 Hydrogen-atom excitation and ionization by proton impact in the 50- to 200-keV energy region E. Fitchard, A. L. Ford, and J. F. Reading Cyclotron Institute and Department of Physics, Texas A&M University..., and include all terms in the Born series. For projectile energies between SO and 200 keV the results are in excellent agreement with rec'ent experiments. The excitation and ionization of a hydrogen atom by proton impact has been for many years, and still...

  1. Oil reserves -Wikipedia, the free encyclopedia http://en.wikipedia.org/wiki/Oil_reserves 1 of 14 5/16/2006 2:49 AM

    E-Print Network [OSTI]

    Dahlquist, Kam D.

    Oil reserves - Wikipedia, the free encyclopedia http://en.wikipedia.org/wiki/Oil_reserves 1 of 14 5/16/2006 2:49 AM Oil reserves From Wikipedia, the free encyclopedia Oil reserves refer to portions of oil in place that are recoverable under economic constraints. In comparison, oil in place, or STOOIP, meaning

  2. Simulations of Microchannel Plate Sensitivity to <20 keV X-rays as a Function of Energy and Incident Angle

    SciTech Connect (OSTI)

    Kruschwitz, Craig; Wu, M.; Rochau, G. A.

    2013-06-13

    We present results of Monte Carlo simulations of microchannel plate (MCP) response to x-rays in the 250 eV to 20 keV energy range as a function of both x-ray energy and impact angle. The model is based on the model presented in Rochau et al. (2006). However, while the Rochau et al. (2006) model was two-dimensional, and their results only went to 5 keV, our results have been expanded to 20 keV, and our model has been incorporated into a three-dimensional Monte Carlo MCP model that we have developed over the past several years (Kruschwitz et al. 2011). X-ray penetration through multiple MCP pore walls is increasingly important above 5 keV. The effect of x-ray penetration through multiple pores on MCP performance was studied and is presented.

  3. INTEGRAL high energy sky: The keV to MeV cosmic sources

    E-Print Network [OSTI]

    P. Ubertini; A. De Rosa; A. Bazzano; L. Bassani; V. Sguera

    2008-02-03

    After almost 5 years of operation, ESA's International Gamma-Ray Astrophysics Laboratory (INTEGRAL) Space Observatory has unveiled a new soft Gamma ray sky and produced a remarkable harvest of results, ranging from identification of new high energy sources, to the discovery of dozens of variable sources to the mapping of the Aluminum emission from the Galaxy Plane to the presence of electrons and positrons generating the annihilation line in the Galaxy central radian. INTEGRAL is continuing the deep observations of the Galactic Plane and of the whole sky in the soft Gamma ray range. The new IBIS gamma ray catalogue contains more than 420 sources detected above 20 keV. We present a view of the INTEGRAL high energy sky with particular regard to sources emitting at high energy, including Active Galactic Nuclei (AGN), HESS/MAGIC counterparts and new view of the cosmic gamma ray diffuse background.

  4. First limits on the 3-200 keV X-ray spectrum of the quiet Sun using RHESSI

    E-Print Network [OSTI]

    Iain G. Hannah; G. J Hurford; H. S. Hudson; R. P. Lin; K. van Bibber

    2007-02-27

    We present the first results using the Reuven Ramaty High-Energy Solar Spectroscopic Imager, RHESSI, to observe solar X-ray emission not associated with active regions, sunspots or flares (the quiet Sun). Using a newly developed chopping technique (fan-beam modulation) during seven periods of offpointing between June 2005 to October 2006, we obtained upper limits over 3-200 keV for the quietest times when the GOES12 1-8A flux fell below $10^{-8}$ Wm$^{-2}$. These values are smaller than previous limits in the 17-120 keV range and extend them to both lower and higher energies. The limit in 3-6 keV is consistent with a coronal temperature $\\leq 6$ MK. For quiet Sun periods when the GOES12 1-8A background flux was between $10^{-8}$ Wm$^{-2}$ and $10^{-7}$ Wm$^{-2}$, the RHESSI 3-6 keV flux correlates to this as a power-law, with an index of $1.08 \\pm 0.13$. The power-law correlation for microflares has a steeper index of $1.29 \\pm 0.06$. We also discuss the possibility of observing quiet Sun X-rays due to solar axions and use the RHESSI quiet Sun limits to estimate the axion-to-photon coupling constant for two different axion emission scenarios.

  5. Measurement of high-energy (10–60 keV) x-ray spectral line widths with eV accuracy

    SciTech Connect (OSTI)

    Seely, J. F., E-mail: seelyjf@gmail.com; Feldman, U. [Artep Inc., 2922 Excelsior Springs Court, Ellicott City, Maryland 21042 (United States); Glover, J. L.; Hudson, L. T.; Ralchenko, Y.; Henins, Albert [National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States); Pereira, N. [Ecopulse Inc., P. O. Box 528, Springfield, Virginia 22152 (United States); Di Stefano, C. A.; Kuranz, C. C.; Drake, R. P. [University of Michigan, Ann Arbor, Michigan 48109 (United States); Chen, Hui; Williams, G. J.; Park, J. [Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)

    2014-11-15

    A high resolution crystal spectrometer utilizing a crystal in transmission geometry has been developed and experimentally optimized to measure the widths of emission lines in the 10–60 keV energy range with eV accuracy. The spectrometer achieves high spectral resolution by utilizing crystal planes with small lattice spacings (down to 2d = 0.099 nm), a large crystal bending radius and Rowland circle diameter (965 mm), and an image plate detector with high spatial resolution (60 ?m in the case of the Fuji TR image plate). High resolution W L-shell and K-shell laboratory test spectra in the 10–60 keV range and Ho K-shell spectra near 47 keV recorded at the LLNL Titan laser facility are presented. The Ho K-shell spectra are the highest resolution hard x-ray spectra recorded from a solid target irradiated by a high-intensity laser.

  6. High resolution 17 keV to 75 keV backlighters for High Energy Density experiments

    SciTech Connect (OSTI)

    Park, H; Maddox, B R; Giraldez, E; Hatchett, S P; Hudson, L; Izumi, N; Key, M H; Pape, S L; MacKinnon, A J; MacPhee, A G; Patel, P K; Phillips, T W; Remington, B A; Seely, J F; Tommasini, R; Town, R; Workman, J

    2008-02-25

    We have developed 17 keV to 75 keV 1-dimensional and 2-dimensional high-resolution (< 10 {micro}m) radiography using high-intensity short pulse lasers. High energy K-{alpha} sources are created by fluorescence from hot electrons interacting in the target material after irradiation by lasers with intensity I{sub L} > 10{sup 17} W/cm{sup 2}. We have achieved high resolution point projection 1-dimensional and 2-dimensional radiography using micro-foil and micro-wire targets attached to low-Z substrate materials. The micro-wire size was 10 {micro}m x 10 {micro}m x 300 {micro}m on a 300 {micro}m x 300 {micro}m x 5 {micro}m CH substrate. The radiography performance was demonstrated using the Titan laser at LLNL. We observed that the resolution is dominated by the micro-wire target size and there is very little degradation from the plasma plume, implying that the high energy x-ray photons are generated mostly within the micro-wire volume. We also observe that there are enough K{alpha} photons created with a 300 J, 1-{omega}, 40 ps pulse laser from these small volume targets, and that the signal-to-noise ratio is sufficiently high, for single shot radiography experiments. This unique technique will be used on future high energy density (HED) experiments at the new Omega-EP, ZR and NIF facilities.

  7. Lifetime of 981-Kev State in Li-8 

    E-Print Network [OSTI]

    Throop, M. J.; Youngblood, David H.; Morrison, G. C.

    1971-01-01

    Laboratory Report No. AFOUL-TB-65-150, 1966 (unpublished). 'S. W. Robinson and B. D. Bent, Phys. Rev. 168, 1266 (1968). ' L. F. Chase, Jr., R. 0, Johnson, F. J, Vaughn, and E. K. %arburton, Phys. Bev. 127, 859 (1962). Chromium CorporRtlon of Amer ica... as the 2.10-1.08-MeV transition in F~8 (E?=1021.3 + 1.2 keV, 33'%%uo branch7). The accompanying 2.10-0.94-MeV transition in F"was also observed with about equal intensity, as expected. A third set of runs with a 25-cm'-coaxial detector of im- proved...

  8. RHESSI Observations of the Solar Flare Iron-line Feature at 6.7 keV

    E-Print Network [OSTI]

    K. J. H. Phillips; C. Chifor; B. R. Dennis

    2006-07-13

    Analysis of RHESSI 3--10 keV spectra for 27 solar flares is reported. This energy range includes thermal free--free and free--bound continuum and two line features, at 6.7keV and 8keV, principally due to highly ionized iron (Fe). We used the continuum and the flux in the so-called Fe-line feature at 6.7keV to derive the electron temperature T_e, the emission measure, and the Fe-line equivalent width as functions of time in each flare. The Fe/H abundance ratio in each flare is derived from the Fe-line equivalent width as a function of T_e. To minimize instrumental problems with high count rates and effects associated with multi-temperature and nonthermal spectral components, spectra are presented mostly during the flare decay phase, when the emission measure and temperature were smoothly varying. We found flare Fe/H abundance ratios that are consistent with the coronal abundance of Fe (i.e. 4 times the photospheric abundance) to within 20% for at least 17 of the 27 flares; for 7 flares, the Fe/H abundance ratio is possibly higher by up to a factor of 2. We find evidence that the Fe XXV ion fractions are less than the theoretically predicted values by up to 60% at T_e=25 MK appear to be displaced from the most recent theoretical values by between 1 and 3 MK.

  9. Origin of The 871-keV Gamma Ray and the "Oxide" Attribute

    SciTech Connect (OSTI)

    Peurrung, Anthony J.; Arthur, Richard J.; Geelhood, Bruce D.; Scheele, Randall D.; Elovich, Robert J.; Pratt, Sharon L.

    2000-03-22

    This brief paper concludes our study of the origin of the 871-keV observed for many plutonium oxide samples.

  10. What can BeppoSAX do about the 2-10 keV cosmic background ? A progress report

    E-Print Network [OSTI]

    L. Chiappetti; G. Cusumano; S. Del Sordo; M. C. Maccarone; T. Mineo; S. Molendi

    1997-12-18

    We report the current status of the analysis of the MECS background using the entire dataset of the BeppoSAX Science performance Verification Phase. We have collected 360 ks of dark Earth instrumental background, 470 ks of bright Earth background and 1100 ks of blank field data. We are attempting to model the instrumental background in terms of its various components (in particular the spatial modulation of the residual contamination by the built-in Fe calibration sources), and then use this model, and the information on the vignetting and the PSF to derive the cosmic background in the 2-10 keV range

  11. FHBS calculation of ionized electron angular and energy distribution following the p+H collision at 20 keV 

    E-Print Network [OSTI]

    Fu, Jun

    2004-11-15

    -Centered Expansion (SCE). In the SCE method a basis is con ned around the target center. This limited basis has proved to be less effective in calculating charge transfer, which is important at the impact energy range we are considering (20 keV). Thus the SCE... is not a good candidate to obtain meaningful differential cross sections. Despite this de ciency the SCE is helpful in checking our ability to describe the electron continuum. The One-and-Half-Centered-Expansion (OHCE) method makes an improvement over...

  12. On energetic electrons (>38 keV) in the central plasma sheet: Data analysis and modeling

    E-Print Network [OSTI]

    Li, Xinlin

    On energetic electrons (>38 keV) in the central plasma sheet: Data analysis and modeling Bingxian] The spatial distribution of >38 keV electron fluxes in the central plasma sheet (CPS) and the statistical relationship between the CPS electron fluxes and the upstream solar wind and interplanetary magnetic field (IMF

  13. Study of 1–8 keV K-? x-ray emission from high intensity femtosecond laser produced plasma

    SciTech Connect (OSTI)

    Arora, V., E-mail: arora@rrcat.gov.in; Naik, P. A.; Chakera, J. A.; Bagchi, S.; Tayyab, M.; Gupta, P. D. [Laser Plasma Division, Raja Rammana Centre for Advanced Technology, Indore 452 013 (India)] [Laser Plasma Division, Raja Rammana Centre for Advanced Technology, Indore 452 013 (India)

    2014-04-15

    We report an experimental study on the optimization of a laser plasma based x-ray source of ultra-short duration K-? line radiation. The interaction of pulses from a CPA based Ti:sapphire laser (10 TW, 45 fs, 10 Hz) system with magnesium, titanium, iron and copper solid target generates bright 1-8 keV K-? x-ray radiation. The x-ray yield was optimized with the laser pulse duration (at fixed fluence) which is varied in the range of 45 fs to 1.4 ps. It showed a maximum at laser pulse duration of ?740 fs, 420 fs, 350 and 250 fs for Mg (1.3 keV), Ti (4.5 keV), Fe (6.4 keV) and Cu (8.05 keV) respectively. The x-ray yield is observed to be independent of the sign of the chirp. The scaling of the K-? yield (I{sub x} ? I{sub L}{sup ?}) for 45 fs and optimized pulse duration were measured for laser intensities in the region of 3 × 10{sup 14} – 8 × 10{sup 17}. The x-ray yield shows a much faster scaling exponent ? = 1.5, 2.1, 2.4 and 2.6 for Mg, Ti, Fe and Cu respectively at optimized pulse duration compared to scaling exponent of 0.65, 1.3, 1.5, and 1.7 obtained for 45 fs duration laser pulses. The laser to x-ray energy conversion efficiencies obtained for different target materials are ?{sub Mg} = 1.2 × 10{sup ?5}, ?{sub Ti} = 3.1 × 10{sup ?5}, ?{sub Fe} = 2.7 × 10{sup ?5}, ?{sub Cu} = 1.9 × 10{sup ?5}. The results have been explained from the efficient generation of optimal energy hot electrons at longer laser pulse duration. The faster scaling observed at optimal pulse duration indicates that the x-ray source is generated at the target surface and saturation of x-ray emission would appear at larger laser fluence. An example of utilization of the source for measurement of shock-wave profiles in a silicon crystal by time resolved x-ray diffraction is also presented.

  14. Monochromatic focusing of subpicosecond x-ray pulses in the keV range T. Missalla, I. Uschmann,a)

    E-Print Network [OSTI]

    von der Linde, D.

    picosecond by using spherically or toroidally bent crystals is presented. The spectral, spatial, and time-dependent properties of focusing by two-dimensional bent crystals are calculated by considering geometrical effects obtained from a von Ha´mos spectrometer and two-dimensional bent crystals are compared and found in good

  15. Isotopic Mo Neutron Total Cross Section Measurements in the Energy Range 1 to 620 keV

    E-Print Network [OSTI]

    Danon, Yaron

    are of particular importance because stable Mo isotopes can be found in significant concentrations in a nuclear fuel, fuel cladding, and most importantly as an advanced nuclear fuel in the form of U-Mo [2, 3 burst width. More informa- tion on the detector can be found in Reference [1]. Highly-enriched metallic

  16. LUCIA - a new 1-7 keV {mu}-XAS Beamline

    SciTech Connect (OSTI)

    Janousch, M.; Schmidt, Th.; Wetter, R.; Grolimund, G.; Scheidegger, A.M.; Flank, A.-M.; Lagarde, P.; Cauchon, G.; Bac, S.; Dubuisson, J.M.

    2004-05-12

    LURE-SOLEIL (France) and the Swiss Light Source (SLS) are building together a new micro focused beamline for micro x-ray absorption spectroscopy and micro imaging. This line is designed to deliver a photon flux of the order of 1012 ph/sec on a 1 x 1 {mu}m spot within the energy domain of 0.8 to 7 keV. This beam line is being installed on the X07M straight section of SLS. The source is an APPLE II undulator with a period of 54 mm. The main advantage of this device lies in the delivery of any degree of polarization, linear or circular, over the whole energy range, without the need of a sample-position change. The monochromator will be a fixed exit double crystal equipped with 5 sets of crystals, thanks to the very narrow photon beam from the undulator ( Beryl, KTP, YB66, InSb(111), Si(111) ). The optics includes a first horizontal focusing mirror (spherical), which produces an intermediate source for the horizontal mirror of a Kirkpatrick-Baez (KB) system. The vertical mirror of the KB directly images the source. Finally, a low-pass double mirror filter insures a proper harmonic rejection.

  17. MULTI-KEV X-RAY YIELDS FROM HIGH-Z GAS TARGETS FIELDED AT OMEGA

    SciTech Connect (OSTI)

    Kane, J O; Fournier, K B; May, M J; Colvin, J D; Thomas, C A; Marrs, R E; Compton, S M; Moody, J D; Bond, E J; Davis, J F

    2010-11-04

    The authors report on modeling of x-ray yield from gas-filled targets shot at the OMEGA laser facility. The OMEGA targets were 1.8 mm long, 1.95 mm in diameter Be cans filled with either a 50:50 Ar:Xe mixture, pure Ar, pure Kr or pure Xe at {approx} 1 atm. The OMEGA experiments heated the gas with 20 kJ of 3{omega} ({approx} 350 nm) laser energy delivered in a 1 ns square pulse. the emitted x-ray flux was monitored with the x-ray diode based DANTE instruments in the sub-keV range. Two-dimensional x-ray images (for energies 3-5 keV) of the targets were recorded with gated x-ray detectors. The x-ray spectra were recorded with the HENWAY crystal spectrometer at OMEGA. Predictions are 2D r-z cylindrical with DCA NLTE atomic physics. Models generally: (1) underpredict the Xe L-shell yields; (2) overpredict the Ar K-shell yields; (3) correctly predict the Xe thermal yields; and (4) greatly underpredict the Ar thermal yields. However, there are spreads within the data, e.g. the DMX Ar K-shell yields are correctly predicted. The predicted thermal yields show strong angular dependence.

  18. Observation of 511 keV peak high count rate in studying (n,x) and (g,x) reactions on terbium

    E-Print Network [OSTI]

    I. Kadenko; N. Dzysiuk

    2011-01-26

    Experimental investigation of (n, x) and (g, x) reactions on Tb-159 with activation technique was carried out. Tb specimens of natural composition were irradiated with (d-d) and (d-t) neutrons using NG-300 neutron generator. Additionally the series of experiments were performed with application of M-30 microtrone as a source of electrons for bremsstrahlung spectra production with end point energies 7.5, 9.5, 11, 11.5, 12, 12.5, 16.5, and 18.5 MeV. Instrumental spectra of Tb specimens were measured with HPGe and Ge(Li) spectrometers. Within the main scope of nuclear reactions research and accurate {\\gamma}-spectrometry of Tb specimens a high count rate in 511 keV {\\gamma}-line peak was observed. The first-priority analysis of Tb specimen impurities was done with further attempts to explain a result of observations with reference to the specific nuclear properties of Tb which could appear due to complex GDR structure. The energy threshold of the process detected was determined around 12.2 MeV. The lower estimate of cross section value for this process was assumed and calculated.

  19. Compact focusing spectrometer: Visible (1 eV) to hard x-rays (200 keV)

    SciTech Connect (OSTI)

    Baronova, E. O.; Stepanenko, A. M.; Pereira, N. R.

    2014-11-15

    A low-cost spectrometer that covers a wide range of photon energies can be useful to teach spectroscopy, and for simple, rapid measurements of the photon spectrum produced by small plasma devices. The spectrometer here achieves its wide range, nominally from 1 eV to 200 keV, with a series of spherically and cylindrically bent gratings or crystals that all have the same shape and the same radius of curvature; they are complemented by matching apertures and diagnostics on the Rowland circle that serves as the circular part of the spectrometer's vacuum vessel. Spectral lines are easily identified with software that finds their positions from the dispersion of each diffractive element and the known energies of the lines.

  20. Efficient laser-induced 6 - 8 keV x-ray production from iron...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Efficient laser-induced 6 - 8 keV x-ray production from iron oxide aerogel and foil-lined cavity targets Citation Details In-Document Search Title: Efficient...

  1. Effect of 200 keV Ar{sup +} implantation on optical and electrical properties of polyethyleneterepthalate (PET)

    SciTech Connect (OSTI)

    Kumar, Rajiv Goyal, Meetika Sharma, Ambika; Aggarwal, Sanjeev; Sharma, Annu; Kanjilal, D.

    2015-05-15

    In the present paper we have discussed the effect of 200 keV Ar{sup +} ions on the electrical and optical properties of PET samples. PET samples were implanted with 200 keV Ar{sup +} ions to various doses ranging from 1×10{sup 15} to 1×10{sup 17} Ar{sup +} cm{sup 2}. The changes in the electrical and optical properties of pristine and implanted PET specimens have been studied by using Keithley electrometer and UV-Visible absorption spectroscopy. The electrical conductivity has found to be increased with increasing ion dose. The optical studies have revealed the drastic alterations in optical band gap from 3.63 eV to 1.48 eV and also increase in number of carbon atoms per cluster from 215 to 537. Further, the change in the electrical conductivity and optical band gap has also been correlated with the formation of conductive islands in the implanted layers of PET.

  2. G. Tsaparlis and H. Sevian (eds.), Concepts of Matter in Science Education, Innovations in Science Education and Technology 19, DOI 10.1007/978-94-007-5914-5_16,

    E-Print Network [OSTI]

    Talanquer, Vicente A.

    G. Tsaparlis and H. Sevian (eds.), Concepts of Matter in Science Education, Innovations in Science Education and Technology 19, DOI 10.1007/978-94-007-5914-5_16, © Springer Science+Business Media Dordrecht and behavior of relevant materials in their surroundings. Unfortunately, educational research in the last 40

  3. The 14C(n,g) cross section between 10 keV and 1 MeV

    E-Print Network [OSTI]

    R. Reifarth; M. Heil; C. Forssen; U. Besserer; A. Couture; S. Dababneh; L. Doerr; J. Goerres; R. C. Haight; F. Kaeppeler; A. Mengoni; S. O'Brien; N. Patronis; R. Plag; R. S. Rundberg; M. Wiescher; J. B. Wilhelmy

    2009-10-01

    The neutron capture cross section of 14C is of relevance for several nucleosynthesis scenarios such as inhomogeneous Big Bang models, neutron induced CNO cycles, and neutrino driven wind models for the r process. The 14C(n,g) reaction is also important for the validation of the Coulomb dissociation method, where the (n,g) cross section can be indirectly obtained via the time-reversed process. So far, the example of 14C is the only case with neutrons where both, direct measurement and indirect Coulomb dissociation, have been applied. Unfortunately, the interpretation is obscured by discrepancies between several experiments and theory. Therefore, we report on new direct measurements of the 14C(n,g) reaction with neutron energies ranging from 20 to 800 keV.

  4. BEAM TESTS OF THE 10 KeV INJECTOR FOR THE UNIVERSITY OF MARYLAND ELECTRON RING (UMER)

    E-Print Network [OSTI]

    Valfells, Ágúst

    BEAM TESTS OF THE 10 KeV INJECTOR FOR THE UNIVERSITY OF MARYLAND ELECTRON RING (UMER) S. Bernal , H envelope matching experiments with a 10 keV, 100 mA, 100 ns electron beam. These values represent experiments with a 4 keV, 17 mA, 5 µs electron beam appear in Ref. [4]. 2 BEAM LINE AND DIAGNOSTICS While

  5. Sub-5 keV electron-beam lithography in hydrogen silsesquioxane resist

    E-Print Network [OSTI]

    Manfrinato, Vitor R.

    We fabricated 9–30 nm half-pitch nested Ls and 13–15 nm half-pitch dot arrays, using 2 keV electron-beam lithography with hydrogen silsesquioxane (HSQ) as the resist. All structures with 15 nm half-pitch and above were ...

  6. 5 (Upgradable to 25 keV) Free Electron Laser (FEL) Facility

    E-Print Network [OSTI]

    York, R C

    2013-01-01

    A Free Electron Laser (FEL) facility utilizing a recirculated Superconducting Radio Frequency (SRF) linear accelerator (linac) provides the opportunity to achieve about five times greater photon energy than an unrecirculated linac of similar cost. > A 4 GeV SRF, cw, electron linac can be used to drive an FEL producing 5 keV photons. The SLAC National Accelerator Laboratory, a Department of Energy (DOE) Basic Energy Sciences (BES) laboratory, proposes to utilize a 4 GeV unrecirculated, SRF, linac in a segment of existing linac tunnel. > For an initial investment similar to that of the proposed SLAC strategy, a recirculated SRF linac system could deliver the 4 GeV electrons for photon energies of 5 keV and provide an upgrade path to photon energies of 25 keV. > Further support amounting to about a third of the initial investment would provide upgrade funds for additional SRF linac and cryogenic capacity sufficient to provide electron energies appropriate for 25 keV photons matching the European XFEL.

  7. Efficient laser-induced 6-8 keV x-ray production from iron oxide aerogel and foil-lined cavity targets

    SciTech Connect (OSTI)

    Perez, F.; Kay, J. J.; Patterson, J. R.; Kane, J.; May, M.; Emig, J.; Colvin, J.; Gammon, S.; Satcher, J. H. Jr.; Fournier, K. B. [Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550 (United States); Villette, B.; Girard, F.; Reverdin, C. [CEA DAM DIF, F-91297 Arpajon (France); Sorce, C. [Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550 (United States); University of Rochester - Laboratory for Laser Energetics, 250 E. River Rd, Rochester, New York 14623-1299 (United States); Jaquez, J. [General Atomics, San Diego, California 92121 (United States)

    2012-08-15

    The performance of new iron-based laser-driven x-ray sources has been tested at the OMEGA laser facility for production of x rays in the 6.5-8.5 keV range. Two types of targets were experimentally investigated: low-density iron oxide aerogels (density 6-16 mg/cm{sup 3}) and stainless steel foil-lined cavity targets (steel thickness 1-5 {mu}m). The targets were irradiated by 40 beams of the OMEGA laser (500 J/beam, 1 ns pulse, wavelength 351 nm). All targets showed good coupling with the laser, with <5% of the incident laser light backscattered by the resulting plasma in all cases (typically <2.5%). The aerogel targets produced T{sub e}=2 to 3 keV, n{sub e}=0.12-0.2 critical density plasmas yielding a 40%-60% laser-to-x-ray total conversion efficiency (CE) (1.2%-3% in the Fe K-shell range). The foil cavity targets produced T{sub e}{approx} 2 keV, n{sub e}{approx} 0.15 critical density plasmas yielding a 60%-75% conversion efficiency (1.6%-2.2% in the Fe K-shell range). Time-resolved images illustrate that the volumetric heating of low-density aerogels allow them to emit a higher K-shell x-ray yield even though they contain fewer Fe atoms. However, their challenging fabrication process leads to a larger shot-to-shot variation than cavity targets.

  8. Earth X-ray albedo for cosmic X-ray background radiation in the 1--1000 keV band

    E-Print Network [OSTI]

    E. Churazov; S. Sazonov; R. Sunyaev; M. Revnivtsev

    2008-02-11

    We present calculations of the reflection of the cosmic X-ray background (CXB) by the Earth's atmosphere in the 1--1000 keV energy range. The calculations include Compton scattering and X-ray fluorescent emission and are based on a realistic chemical composition of the atmosphere. Such calculations are relevant for CXB studies using the Earth as an obscuring screen (as was recently done by INTEGRAL). The Earth's reflectivity is further compared with that of the Sun and the Moon -- the two other objects in the Solar system subtending a large solid angle on the sky, as needed for CXB studies.

  9. RANGE-ENERGY TABLES

    E-Print Network [OSTI]

    Rich, Marvin

    2010-01-01

    Particles. II. PROTON RANGE-ENERGY DATA Stopping Medium: Be2301 III. PION RANGE-ENERGY DATA Mev. Pion Kinetic Energy2301 IV. DEUTERON RANGE-ENERGY DATA Deuteron Kinetic Energy

  10. Measurements of the neutron-proton and neutron-carbon total cross section from 150 to 800 keV

    E-Print Network [OSTI]

    Daub, B. H.

    There have been very few measurements of the total cross section for np scattering below 500 keV. To differentiate among NN potential models, improved cross section data between 20 and 600 keV are required. We measured the ...

  11. Search for 14.4 keV solar axions from M1 transition of Fe-57...

    Office of Scientific and Technical Information (OSTI)

    Search for 14.4 keV solar axions from M1 transition of Fe-57 with CUORE crystals Citation Details In-Document Search Title: Search for 14.4 keV solar axions from M1 transition of...

  12. Enhanced room temperature oxidation in silicon and porous silicon under 10 keV x-ray irradiation

    E-Print Network [OSTI]

    Weiss, Sharon

    Enhanced room temperature oxidation in silicon and porous silicon under 10 keV x-ray irradiation been suggested that gamma irradiation accelerates oxidation of porous silicon.5 Irradiation silicon samples that occurs over three decades of 10 keV x-ray irradiation. II. SAMPLE PREPARATION Silicon

  13. Efficient laser-induced 6-8 keV x-ray production from iron oxide...

    Office of Scientific and Technical Information (OSTI)

    Efficient laser-induced 6-8 keV x-ray production from iron oxide aerogel and foil-lined cavity targets Citation Details In-Document Search Title: Efficient laser-induced 6-8 keV...

  14. The 2-79 keV X-ray Spectrum of the Circinus Galaxy with NuSTAR...

    Office of Scientific and Technical Information (OSTI)

    The 2-79 keV X-ray Spectrum of the Circinus Galaxy with NuSTAR, XMM-Newton and Chandra: a Fully Compton-Thick AGN Citation Details In-Document Search Title: The 2-79 keV X-ray...

  15. Production of Sterile Neutrino Dark Matter and the 3.5 keV line

    E-Print Network [OSTI]

    Alexander Merle; Aurel Schneider

    2015-02-11

    The recent observation of an X-ray line at an energy of 3.5 keV mainly from galaxy clusters has initiated a discussion about whether we may have seen a possible dark matter signal. If confirmed, this signal could stem from a decaying sterile neutrino of a mass of 7.1 keV. Such a particle could make up all the dark matter, but it is not clear how it was produced in the early Universe. In this letter we show that it is possible to discriminate between different production mechanisms with present-day astronomical data. The most stringent constraint comes from the Lyman-{\\alpha} forest and seems to disfavor all but one of the main production mechanisms proposed in the literature, which is the production via decay of heavy scalar singlets. Pinning down the production mechanism will help to decide whether the X-ray signal indeed comprises an indirect detection of dark matter.

  16. The Reuven Ramaty High Energy Solar Spectroscopic Imager observation of the 1809 keV line from Galactic 26Al

    E-Print Network [OSTI]

    David M. Smith

    2003-04-28

    Observations of the central radian of the Galaxy by the Reuven Ramaty High Energy Solar Spectroscopy Imager (RHESSI) have yielded a high-resolution measurement of the 1809 keV line from 26Al, detected at 11 sigma significance in nine months of data. The RHESSI result for the width of the cosmic line is 2.03 (+0.78, -1.21) keV FWHM. The best fit line width of 5.4 keV FWHM reported by Naya et al. (1996) using the Gamma-Ray Imaging Spectrometer (GRIS) balloon instrument is rejected with high confidence.

  17. Direct neutron capture of 48Ca at kT = 52 keV

    E-Print Network [OSTI]

    P. Mohr; H. Oberhummer; H. Beer; W. Rochow; V. Koelle; G. Staudt; P. V. Sedyshev; Yu. P. Popov

    1997-06-06

    The neutron capture cross section of 48Ca was measured relative to the known gold cross section at kT = 52 keV using the fast cyclic activation technique. The experiment was performed at the Van-de-Graaff accelerator, Universitaet Tuebingen. The new experimental result is in good agreement with a calculation using the direct capture model. The 1/v behaviour of the capture cross section at thermonuclear energies is confirmed, and the adopted reaction rate which is based on several previous experimental investigations remains unchanged.

  18. No evidence of the 17-keV neutrino in the decay of [sup 71]Ge

    SciTech Connect (OSTI)

    DiGregorio, D.E.; Gil, S.; Huck, H.; Batista, E.R.; Ferrero, A.M.J.; Gattone, A.O. (Departamento de Fisica, TANDAR, Comision Nacional de Energia Atomica, Avenida del Libertador 8250, 1429 Buenos Aires (Argentina))

    1993-06-01

    We have measured the internal bremsstrahlung spectrum of the electron capture decay of [sup 71]Ge in search for a possible mass component of the emitted neutrino. The main relevance of this experiment is given by the collected statistics which is 20 times larger than in a previously published work studying the same decay. Analyses of the data exclude the presence of a massive component of 17.2[sub [minus]1.1][sup +1.3] keV and (1.6[plus minus]0.7)% mixing fraction claimed by Zlimen [ital et] [ital al]. for this same nucleus, at the 99.0% confidence level.

  19. Search for 14.4 keV solar axions from M1 transition of Fe-57 with CUORE crystals

    E-Print Network [OSTI]

    Alessandria, F.

    2014-01-01

    to JCAP Search for 14.4 keV solar axions from M1 transitionfor useful discussion about solar core 57 Fe content.excitation of 57 Fe in the solar core. The isotope 57 Fe is

  20. Production of a keV X-Ray Beam from Synchrotron Radiation in Relativistic Laser-Plasma Interaction

    E-Print Network [OSTI]

    Umstadter, Donald

    Production of a keV X-Ray Beam from Synchrotron Radiation in Relativistic Laser-Plasma Interaction-Heine-Universitaet, Duesseldorf, 40225 Duesseldorf, Germany. 4 De´partement de Physique The´orique et Applique´e, CEA/DAM Ile- de of synchrotron radiation, which has keV energy and lies within a narrow (50 mrad) cone angle. DOI: 10.1103/Phys

  1. The X-Ray Line Feature At 3.5 Kev In Galaxy Cluster Spectra

    E-Print Network [OSTI]

    Phillips, K J H; Sylwester, J

    2015-01-01

    Recent work by Bulbul et al. and Boyarsky et al. has suggested that a line feature at approx. 3.5 keV in the X-ray spectra of galaxy clusters and individual galaxies seen with XMM-Newton is due to the decay of sterile neutrinos, a dark matter candidate. This identification has been criticized by Jeltema and Profumo on the grounds that model spectra suggest that atomic transitions in helium-like potassium (K XVIII) and chlorine (Cl XVI) are more likely to be the emitters. Here it is pointed out that the K XVIII lines have been observed in numerous solar flare spectra at high spectral resolution with the RESIK crystal spectrometer and also appear in Chandra HETG spectra of the coronally active star sigma Gem. In addition, the solar flare spectra at least indicate a mean coronal potassium abundance which is a factor of between 9 and 11 higher than the solar photospheric abundance. This fact, together with the low statistical quality of the XMM-Newton spectra, completely accounts for the approx. 3.5 keV feature a...

  2. Improving accuracy and reliability of 186-keV measurements for unattended enrichment monitoring

    SciTech Connect (OSTI)

    Ianakiev, Kiril D; Boyer, Brian D; Swinhoe, Martyn T; Moss, Calvin E; Goda, Joetta M; Favalli, Andrea; Lombardi, Marcie; Paffett, Mark T; Hill, Thomas R; MacArthur, Duncan W; Smith, Morag K

    2010-04-13

    Improving the quality of safeguards measurements at Gas Centrifuge Enrichment Plants (GCEPs), whilst reducing the inspection effort, is an important objective given the number of existing and new plants that need to be safeguarded. A useful tool in many safeguards approaches is the on-line monitoring of enrichment in process pipes. One aspect of this measurement is a simple, reliable and precise passive measurement of the 186-keV line from {sup 235}U. (The other information required is the amount of gas in the pipe. This can be obtained by transmission measurements or pressure measurements). In this paper we describe our research efforts towards such a passive measurement system. The system includes redundant measurements of the 186-keV line from the gas and separately from the wall deposits. The design also includes measures to reduce the effect of the potentially important background. Such an approach would practically eliminate false alarms and can maintain the operation of the system even with a hardware malfunction in one of the channels. The work involves Monte Carlo modeling and the construction of a proof-of-principle prototype. We will carry out experimental tests with UF{sub 6} gas in pipes with and without deposits in order to demonstrate the deposit correction.

  3. Ion source development for the proposed FNAL 750keV injector upgrade

    SciTech Connect (OSTI)

    Bollinger, D.S.; /Fermilab

    2010-11-01

    Currently there is a Proposed FNAL 750keV Injector Upgrade for the replacement of the 40 year old Fermi National Laboratory (FNAL) Cockcroft-Walton accelerators with a new ion source and 200MHz Radio Frequency Quadruple (RFQ). The slit type magnetron being used now will be replaced with a round aperture magnetron similar to the one used at Brookhaven National Lab (BNL). Operational experience from BNL has shown that this type of source is more reliable with a longer lifetime due to better power efficiency. The current source development effort is to produce a reliable source with >60mA of H- beam current, 15Hz rep-rate, 100s pulse width, and a duty factor of 0.15%. The source will be based on the BNL design along with development done at FNAL for the High Intensity Neutrino Source (HINS).

  4. Laser acceleration and deflection of 963 keV electrons with a silicon dielectric structure

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

    Leedle, Kenneth J.; Pease, R. Fabian; Byer, Robert L.; Harris, James S.

    2015-02-12

    Radio frequency particle accelerators are ubiquitous in ultrasmall and ultrafast science, but their size and cost have prompted exploration of compact and scalable alternatives such as the dielectric laser accelerator. We present the first demonstration, to the best of our knowledge, of high gradient laser acceleration and deflection of electrons with a silicon structure. Driven by a 5 nJ, 130 fs mode-locked Ti:sapphire laser at 907 nm wavelength, our devices achieve accelerating gradients in excess of 200 MeV/m and suboptical cycle streaking of 96.30 keV electrons. These results pave the way for high gradient silicon dielectric laser accelerators using commercialmore »lasers and subfemtosecond electron beam experiments.« less

  5. Tip-based source of femtosecond electron pulses at 30?keV

    SciTech Connect (OSTI)

    Hoffrogge, Johannes; Paul Stein, Jan [Max Planck Institute of Quantum Optics, Hans-Kopfermann-Str. 1, 85748 Garching (Germany); Krüger, Michael; Förster, Michael; Hammer, Jakob; Ehberger, Dominik; Hommelhoff, Peter, E-mail: peter.hommelhoff@fau.de [Max Planck Institute of Quantum Optics, Hans-Kopfermann-Str. 1, 85748 Garching (Germany); Department für Physik, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstr. 1, 91058 Erlangen (Germany); Baum, Peter [Max Planck Institute of Quantum Optics, Hans-Kopfermann-Str. 1, 85748 Garching (Germany); Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching (Germany)

    2014-03-07

    We present a nano-scale photoelectron source, optimized for ultrashort pulse durations and well-suited for time-resolved diffraction and advanced laser acceleration experiments. A tungsten tip of several-ten-nanometers diameter mounted in a suppressor-extractor electrode configuration allows the generation of 30?keV electron pulses with an estimated pulse duration of 9?fs (standard deviation; 21?fs full width at half maximum) at the gun exit. We infer the pulse duration from particle tracking simulations, which are in excellent agreement with experimental measurements of the electron-optical properties of the source in the spatial domain. We also demonstrate femtosecond-laser triggered operation of the apparatus. The temporal broadening of the pulse upon propagation to a diffraction sample can be greatly reduced by collimating the beam. Besides the short electron pulse duration, a tip-based source is expected to feature a large transverse coherence and a nanometric emittance.

  6. Molecular dynamics simulations of 30 and 2 keV Ga in Si

    SciTech Connect (OSTI)

    Giannuzzi, Lucille A.; Garrison, Barbara J.

    2007-09-15

    Focused Ga{sup +} ion beams are routinely used at high incident angles for specimen preparation. Molecular dynamics simulations of 2 and 30 keV Ga bombardment of Si(011) at a grazing angle of 88 deg. were conducted to assess sputtering characteristics and damage depth. The bombardment of atomically flat surfaces and surfaces with vacancies shows little energy transfer yielding ion reflection. The bombardment of surfaces with adatoms allows for the coupling of the energy of motion parallel to the surface into the substrate resulting in sputtering. The adatom and one other Si atom eject, and motion in the substrate occurs down to a depth of 13 A. Experimental evidence shows that sputtering is a reality, suggesting that an atomically flat surface is never achieved.

  7. 1-to 10-keV x-ray backlighting of annular wire arrays on the Sandia Z-machine using bent-crystal imaging techniques.

    SciTech Connect (OSTI)

    Rambo, Patrick K.; Wenger, David Franklin; Bennett, Guy R.; Sinars, Daniel Brian; Smith, Ian Craig; Porter, John Larry, Jr.; Cuneo, Michael Edward; Rovang, Dean Curtis; Anderson, Jessica E.

    2003-07-01

    Annular wire array implosions on the Sandia Z-machine can produce >200 TW and 1-2 MJ of soft x rays in the 0.1-10 keV range. The x-ray flux and debris in this environment present significant challenges for radiographic diagnostics. X-ray backlighting diagnostics at 1865 and 6181 eV using spherically-bent crystals have been fielded on the Z-machine, each with a {approx}0.6 eVspectral bandpass, 10 {micro}m spatial resolution, and a 4 mm by 20mm field of view. The Z-Beamlet laser, a 2-TW, 2-kJ Nd:glass laser({lambda} = 527 nm), is used to produce 0.1-1 J x-ray sources for radiography. The design, calibration, and performance of these diagnostics is presented.

  8. ANALYSIS OF THE 6Li(n, t) 03B1 REACTION OVER THE ENERGY RANGE 14 TO 3 900 keV

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of the S-matrix theory of nuclear reactions. A parametric expression is obtained. A 3/2- level is located-matrix theory [11

  9. Beryllium and Graphite High-Accuracy Total Cross-Section Measurements in the Energy Range from 24 to 900 keV

    E-Print Network [OSTI]

    Danon, Yaron

    cross section and has been used as a neutron reflector in compact high flux reactors such as the Ad- vanced Test Reactor1 ~ATR!. Because of its low atomic mass, beryllium can also be used as a moderator, and its light weight makes it favorable in space applications.1 Beryllium also has applications in fusion

  10. RANGE-ENERGY TABLES

    E-Print Network [OSTI]

    Rich, Marvin

    2010-01-01

    Mev gm/ era Mev gm/crn" Mev-cnf/gm 5. 817 x 10" 1. 685 x 10"2301 RANGE OF DEUTERONS IN CARBON J T Mev R gm/cm - dT "dTi T Mev R gm/cm - dT dF Mev- Mev-cn^gm cm/gm 5. 517 x lu" 3.

  11. UPDATE ON THE DEVELOPMENT OF 120-keV MULTI-MEGAWATT NEUTRAL BEAM SOURCE

    E-Print Network [OSTI]

    Haughian, J.M.

    2010-01-01

    hydrogen atmo- sphere using a broad melting range (950°C liquidus - 900°C solidus) filler composed of 25% palladium,

  12. A space bourne crystal diffraction telescope for the energy range of nuclear transitions

    SciTech Connect (OSTI)

    von Ballmoos, P.; Naya, J.E.; Albernhe, F.; Vedrenne, G. [Centre d`Etude Spatial des Rayonnements, Toulouse (France); Smither, R.K.; Faiz, M.; Fernandez, P.; Graber, T. [Argonne National Lab., IL (United States)

    1995-10-01

    Recent experimental work of the Toulouse-Argonne collaboration has opened for perspective of a focusing gamma-ray telescope operating in the energy range of nuclear transitions, featuring unprecedented sensitivity, angular and energy resolution. The instrument consists of a tunable crystal diffraction lens situated on a stabilized spacecraft, focusing gamma-rays onto a small array of Germanium detectors perched on an extendible boom. While the weight of such an instrument is less than 500 kg, it features an angular resolution of 15 in., an energy resolution of 2 keV and a 3 {sigma} narrow line sensitivity of a few times 10{sup {minus}7} photons s{sup {minus}1} cm{sup {minus}2} (10{sup 6} sec observation). This instrumental concept permits observation of any identified source at any selected line-energy in a range of typically 200 keV to 1300 keV. The resulting ``sequential`` operation mode makes sites of explosive nucleosynthesis natural scientific objectives for such a telescope: the nuclear lines of extragalactic supernovae ({sup 56}Ni, {sup 44}Ti, {sup 60}Fe) and galactic novae (p{sup {minus}}p{sup +} line, {sup 7}Be) are accessible to observation, one at a time, due to the erratic appearance and the sequence of half-lifes of these events. Other scientific objectives, include the narrow 511 keV line from galactic broad class annihilators (such as 1E1740-29, nova musca) and possible redshifted annihilation lines from AGN`s.

  13. Light beam range finder

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1998-01-01

    A "laser tape measure" for measuring distance which includes a transmitter such as a laser diode which transmits a sequence of electromagnetic pulses in response to a transmit timing signal. A receiver samples reflections from objects within the field of the sequence of visible electromagnetic pulses with controlled timing, in response to a receive timing signal. The receiver generates a sample signal in response to the samples which indicates distance to the object causing the reflections. The timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the reflection such that the time between transmission of pulses in the sequence in sampling by the receiver sweeps over a range of delays. The transmit timing signal causes the transmitter to transmit the sequence of electromagnetic pulses at a pulse repetition rate, and the received timing signal sweeps over the range of delays in a sweep cycle such that reflections are sampled at the pulse repetition rate and with different delays in the range of delays, such that the sample signal represents received reflections in equivalent time. The receiver according to one aspect of the invention includes an avalanche photodiode and a sampling gate coupled to the photodiode which is responsive to the received timing signal. The transmitter includes a laser diode which supplies a sequence of visible electromagnetic pulses. A bright spot projected on to the target clearly indicates the point that is being measured, and the user can read the range to that point with precision of better than 0.1%.

  14. Light beam range finder

    DOE Patents [OSTI]

    McEwan, T.E.

    1998-06-16

    A ``laser tape measure`` for measuring distance is disclosed which includes a transmitter such as a laser diode which transmits a sequence of electromagnetic pulses in response to a transmit timing signal. A receiver samples reflections from objects within the field of the sequence of visible electromagnetic pulses with controlled timing, in response to a receive timing signal. The receiver generates a sample signal in response to the samples which indicates distance to the object causing the reflections. The timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the reflection such that the time between transmission of pulses in the sequence in sampling by the receiver sweeps over a range of delays. The transmit timing signal causes the transmitter to transmit the sequence of electromagnetic pulses at a pulse repetition rate, and the received timing signal sweeps over the range of delays in a sweep cycle such that reflections are sampled at the pulse repetition rate and with different delays in the range of delays, such that the sample signal represents received reflections in equivalent time. The receiver according to one aspect of the invention includes an avalanche photodiode and a sampling gate coupled to the photodiode which is responsive to the received timing signal. The transmitter includes a laser diode which supplies a sequence of visible electromagnetic pulses. A bright spot projected on to the target clearly indicates the point that is being measured, and the user can read the range to that point with precision of better than 0.1%. 7 figs.

  15. Radiative neutrino mass and 3.5 keV X-ray line

    E-Print Network [OSTI]

    Baek, Seungwon

    2015-01-01

    We consider an extension of Zee-Babu model to explain the smallness of neutrino masses. (1) We extend the lepton number symmetry of the original model to local $B-L$ symmetry. (2) We introduce three Dirac dark matter candidates with flavor-dependent $B-L$ charges. After the spontaneous breaking of $B-L$, a discrete symmetry $Z_6$ remains, which guarantees the stability of dark matter. Then the model can explain the 3.5 keV X-ray line signal with decaying dark matter. We also introduce a real scalar field which is singlet under both the SM and $U(1)_{B-L}$ and can explain the current relic abundance of the Dirac fermionic DMs. If the mixing with the SM Higgs boson is small, it does not contribute to DM direct detection. The main contribution to the scattering of DM off atomic nuclei comes from the exchange of $U(1)_{B-L}$ gauge boson, $Z'$, and is suppressed below current experimental bound when $Z'$ mass is heavy ($\\gtrsim 10$ TeV). If the singlet scalar mass is about 0.1--10 MeV, DM self-interaction can be l...

  16. Energetic electrons, 50 keV 6 MeV, at geosynchronous orbit: their responses to solar wind variations

    E-Print Network [OSTI]

    Li, Xinlin

    1 Energetic electrons, 50 keV ­ 6 MeV, at geosynchronous orbit: their responses to solar wind Short title: ENERGETIC ELECTRONS AT GEOSYNCHRONOUS ORBIT #12;2 Abstract. Using simultaneous measurements of the upstream solar wind and of energetic electrons at geosynchronous orbit, we analyze the response

  17. 3.55 keV photon lines from axion to photon conversion in the Milky Way and M31

    SciTech Connect (OSTI)

    Conlon, Joseph P.; Day, Francesca V., E-mail: j.conlon1@physics.ox.ac.uk, E-mail: francesca.day@physics.ox.ac.uk [Rudolf Peierls Centre for Theoretical Physics, University of Oxford, 1 Keble Road, Oxford, OX1 3NP (United Kingdom)

    2014-11-01

    We further explore a scenario in which the recently observed 3.55 keV photon line arises from dark matter decay to an axion-like particle (ALP) of energy 3.55 keV, which then converts to a photon in astrophysical magnetic fields. This ALP scenario is well-motivated by the observed morphology of the 3.55 keV flux. For this scenario we study the expected flux from dark matter decay in the galactic halos of both the Milky Way and Andromeda (M31). The Milky Way magnetic field is asymmetric about the galactic centre, and so the resulting 3.55 keV flux morphology differs significantly from the case of direct dark matter decay to photons. However the Milky Way magnetic field is not large enough to generate an observable signal, even with ASTRO-H. In contrast, M31 has optimal conditions for a ? ? conversion and the intrinsic signal from M31 becomes two orders of magnitude larger than for the Milky Way, comparable to that from clusters and consistent with observations.

  18. Hard x-ray broad band Laue lenses (80 - 600 keV): building methods and performances

    E-Print Network [OSTI]

    Virgilli, E; Rosati, P; Liccardo, V; Squerzanti, S; Carassiti, V; Caroli, E; Auricchio, N; Stephen, J B

    2015-01-01

    We present the status of the laue project devoted to develop a technology for building a 20 meter long focal length Laue lens for hard x-/soft gamma-ray astronomy (80 - 600 keV). The Laue lens is composed of bent crystals of Gallium Arsenide (GaAs, 220) and Germanium (Ge, 111), and, for the first time, the focusing property of bent crystals has been exploited for this field of applications. We show the preliminary results concerning the adhesive employed to fix the crystal tiles over the lens support, the positioning accuracy obtained and possible further improvements. The Laue lens petal that will be completed in a few months has a pass band of 80 - 300 keV and is a fraction of an entire Laue lens capable of focusing X-rays up to 600 keV, possibly extendable down to 20 - 30 keV with suitable low absorption crystal materials and focal length. The final goal is to develop a focusing optics that can improve the sensitivity over current telescopes in this energy band by 2 orders of magnitude.

  19. Neutron range spectrometer

    DOE Patents [OSTI]

    Manglos, S.H.

    1988-03-10

    A neutron range spectrometer and method for determining the neutron energy spectrum of a neutron emitting source are disclosed. Neutrons from the source are colliminated along a collimation axis and a position sensitive neutron counter is disposed in the path of the collimated neutron beam. The counter determines positions along the collimation axis of interactions between the neutrons in the neutron beam and a neutron-absorbing material in the counter. From the interaction positions, a computer analyzes the data and determines the neutron energy spectrum of the neutron beam. The counter is preferably shielded and a suitable neutron-absorbing material is He-3. 1 fig.

  20. Long Range Development Plan

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousand CubicResourcelogo and-E CChinaC L S CLogin HelpLoisLong Range

  1. 2003-04 2004-05 2005-06 2006-07 2007-08 2008-09 2009-10 2010-11 2011-12 2012-13 5.69 4.92 4.75 4.81 4.05 5.16 4.67 3.67 2.75 -

    E-Print Network [OSTI]

    as the number of years between the student's entry point into The Graduate School (Masters or Ph.81 4.05 5.16 4.67 3.67 2.75 - Cohort Entry Year Time-to-Degree Time-to-degree (TTD) is defined

  2. Neutron range spectrometer

    DOE Patents [OSTI]

    Manglos, Stephen H. (East Syracuse, NY)

    1989-06-06

    A neutron range spectrometer and method for determining the neutron energy spectrum of a neutron emitting source are disclosed. Neutrons from the source are collimnated along a collimation axis and a position sensitive neutron counter is disposed in the path of the collimated neutron beam. The counter determines positions along the collimation axis of interactions between the neutrons in the neutron beam and a neutron-absorbing material in the counter. From the interaction positions, a computer analyzes the data and determines the neutron energy spectrum of the neutron beam. The counter is preferably shielded and a suitable neutron-absorbing material is He-3. The computer solves the following equation in the analysis: ##EQU1## where: N(x).DELTA.x=the number of neutron interactions measured between a position x and x+.DELTA.x, A.sub.i (E.sub.i).DELTA.E.sub.i =the number of incident neutrons with energy between E.sub.i and E.sub.i +.DELTA.E.sub.i, and C=C(E.sub.i)=N .sigma.(E.sub.i) where N=the number density of absorbing atoms in the position sensitive counter means and .sigma. (E.sub.i)=the average cross section of the absorbing interaction between E.sub.i and E.sub.i +.DELTA.E.sub.i.

  3. Quantum Efficiency Calibration of AXAF CCDs from 2 10 keV Herbert L. Manning, Stephen E. Jones, Steve E. Kissel,

    E-Print Network [OSTI]

    keV and 10 keV. The reference CCDs are identical to and are used as calibration transfer standards geometry and typical data are also presented. KEYWORDS: ACIS, AXAF, calibration, CCD, Si(Li) detector and Pennsylvania State University, is developing the AXAF CCD Imaging Spectrometer (ACIS), one of AXAF'S two

  4. First measurement of the 14N(p,gamma)15O cross section down to 70 keV

    E-Print Network [OSTI]

    Lemut, A; Confortola, F; Bonetti, R; Broggini, C; Corvisiero, P; Costantini, H; Cruz, J; Formicola, A; Fülöp, Z; Gervino, G; Guglielmetti, A; Gustavino, C; Gyürky, G; Imbriani, G; Jesus, A P; Junker, M; Limata, B; Menegazzo, R; Prati, P; Roca, V; Rogalla, D; Rolfs, C; Romano, M; Alvarez, C R; Schumann, F; Somorjai, E; Straniero, O; Strieder, F; Terrasi, F; Trautvetter, H P; Fulop, Zs.; Gyurky, Gy.

    2006-01-01

    In stars with temperatures above 20*10^6 K, hydrogen burning is dominated by the CNO cycle. Its rate is determined by the slowest process, the 14N(p,gamma)15O reaction. Deep underground in Italy's Gran Sasso laboratory, at the LUNA 400 kV accelerator, the cross section of this reaction has been measured at energies much lower than ever achieved before. Using a windowless gas target and a 4pi BGO summing detector, direct cross section data has been obtained down to 70 keV, reaching a value of 0.24 picobarn. The Gamow peak has been covered by experimental data for several scenarios of stable and explosive hydrogen burning. In addition, the strength of the 259 keV resonance has been remeasured. The thermonuclear reaction rate has been calculated for temperatures 90 - 300 *10^6 K, for the first time with negligible impact from extrapolations.

  5. First measurement of the 14N(p,gamma)15O cross section down to 70 keV

    E-Print Network [OSTI]

    A. Lemut; D. Bemmerer; F. Confortola; R. Bonetti; C. Broggini; P. Corvisiero; H. Costantini; J. Cruz; A. Formicola; Zs. Fulop; G. Gervino; A. Guglielmetti; C. Gustavino; Gy. Gyurky; G. Imbriani; A. P. Jesus; M. Junker; B. Limata; R. Menegazzo; P. Prati; V. Roca; D. Rogalla; C. Rolfs; M. Romano; C. Rossi Alvarez; F. Schumann; E. Somorjai; O. Straniero; F. Strieder; F. Terrasi; H. P. Trautvetter

    2006-02-09

    In stars with temperatures above 20*10^6 K, hydrogen burning is dominated by the CNO cycle. Its rate is determined by the slowest process, the 14N(p,gamma)15O reaction. Deep underground in Italy's Gran Sasso laboratory, at the LUNA 400 kV accelerator, the cross section of this reaction has been measured at energies much lower than ever achieved before. Using a windowless gas target and a 4pi BGO summing detector, direct cross section data has been obtained down to 70 keV, reaching a value of 0.24 picobarn. The Gamow peak has been covered by experimental data for several scenarios of stable and explosive hydrogen burning. In addition, the strength of the 259 keV resonance has been remeasured. The thermonuclear reaction rate has been calculated for temperatures 90 - 300 *10^6 K, for the first time with negligible impact from extrapolations.

  6. Electron-positron pair production near the Galactic Centre and the 511 keV emission line

    E-Print Network [OSTI]

    Chan, Man Ho

    2015-01-01

    Recent observations indicate that a high production rate of positrons (strong 511 keV line) and a significant amount of excess GeV gamma-ray exist in our Galactic bulge. The latter issue can be explained by $\\sim 40$ GeV dark matter annihilation through $b \\bar{b}$ channel while the former one remains a mystery. On the other hand, recent studies reveal that a large amount of high density gas might exist near the Galactic Centre million years ago to account for the young, massive stars extending from 0.04 pc - 7 pc. In this article, I propose a new scenario and show that the 40 GeV dark matter annihilation model can also explain the required positron production rate (511 keV line) in the bulge due to the existence of the high density gas cloud near the supermassive black hole long time ago.

  7. TRACKING DOWN THE SOURCE POPULATION RESPONSIBLE FOR THE UNRESOLVED COSMIC 6-8 keV BACKGROUND

    SciTech Connect (OSTI)

    Xue, Y. Q.; Wang, S. X.; Brandt, W. N.; Luo, B.; Schneider, D. P.; Young, M.; Alexander, D. M.; Bauer, F. E.; Comastri, A.; Gilli, R.; Fabian, A. C.; Lehmer, B. D.; Vignali, C.

    2012-10-20

    Using the 4 Ms Chandra Deep Field-South (CDF-S) survey, we have identified a sample of 6845 X-ray-undetected galaxies that dominates the unresolved Almost-Equal-To 20%-25% of the 6-8 keV cosmic X-ray background (XRB). This sample was constructed by applying mass and color cuts to sources from a parent catalog based on GOODS-South Hubble Space Telescope z-band imaging of the central 6'radius area of the 4 Ms CDF-S. The stacked 6-8 keV detection is significant at the 3.9{sigma} level, but the stacked emission was not detected in the 4-6 keV band, which indicates the existence of an underlying population of highly obscured active galactic nuclei (AGNs). Further examinations of these 6845 galaxies indicate that the galaxies on the top of the blue cloud and with redshifts of 1 {approx}< z {approx}< 3, magnitudes of 25 {approx}< z {sub 850} {approx}< 28, and stellar masses of 2 Multiplication-Sign 10{sup 8} {approx}< M {sub *}/M {sub Sun} {approx}< 2 Multiplication-Sign 10{sup 9} make the majority contributions to the unresolved 6-8 keV XRB. Such a population is seemingly surprising given that the majority of the X-ray-detected AGNs reside in massive ({approx}> 10{sup 10} M {sub Sun }) galaxies. We discuss constraints upon this underlying AGN population, supporting evidence for relatively low mass galaxies hosting highly obscured AGNs, and prospects for further boosting the stacked signal.

  8. Decaying vector dark matter as an explanation for the 3.5 keV line from galaxy clusters

    SciTech Connect (OSTI)

    Farzan, Yasaman; Akbarieh, Amin Rezaei E-mail: am_rezaei@physics.sharif.ir

    2014-11-01

    We present a Vector Dark Matter (VDM) model that explains the 3.5 keV line recently observed in the XMM-Newton observatory data from galaxy clusters. In this model, dark matter is composed of two vector bosons, V and V', which couple to the photon through an effective generalized Chern-Simons coupling, g{sub V}. V' is slightly heavier than V with a mass splitting m{sub V'} – m{sub V} ? 3.5 keV. The decay of V' to V and a photon gives rise to the 3.5 keV line. The production of V and V' takes place in the early universe within the freeze-in framework through the effective g{sub V} coupling when m{sub V'} < T < ?, ? being the cut-off above which the effective g{sub V} coupling is not valid. We introduce a high energy model that gives rise to the g{sub V} coupling at low energies. To do this, V and V' are promoted to gauge bosons of spontaneously broken new U(1){sub V} and U(1){sub V'} gauge symmetries, respectively. The high energy sector includes milli-charged chiral fermions that lead to the g{sub V} coupling at low energy via triangle diagrams.

  9. Scheme to increase the output average spectral flux of the European XFEL at $14.4$ keV

    E-Print Network [OSTI]

    Geloni, Gianluca; Saldin, Evgeni

    2015-01-01

    Techniques like inelastic X-ray scattering (IXS) and nuclear resonance scattering (NRS) are currently limited by the photon flux available at X-ray sources. At $14.4$ keV, third generation synchrotron radiation sources produce a maximum of $10^{10}$ photons per second in a meV bandwidth. In this work we discuss about the possibility of increasing this flux a thousand-fold by exploiting high repetition rate self-seeded pulses at the European XFEL. Here we report on a feasibility study for an optimized configuration of the SASE2 beamline at the European XFEL which combines self-seeding and undulator tapering techniques in order to increase the average spectral flux at $14.4$ keV. In particular, we propose to perform monochromatization at $7.2$ keV with the help of self-seeding, and amplify the seed in the first part of output undulator. The amplification process can be stopped at a position well before saturation, where the electron beam gets considerable bunching at the 2nd harmonic of the coherent radiation. ...

  10. Contrasting physics in wire array z pinch sources of 1-20?keV emission on the Z facility

    SciTech Connect (OSTI)

    Ampleford, D. J., E-mail: damplef@sandia.gov; Jones, B.; Jennings, C. A.; Hansen, S. B.; Cuneo, M. E.; Harvey-Thompson, A. J.; Rochau, G. A.; Coverdale, C. A.; Laspe, A. R.; Flanagan, T. M.; Moore, N. W.; Sinars, D. B.; Lamppa, D. C.; Harding, E. C.; Sygar, W. A.; Savage, M. E.; Moore, J. K.; Focia, R.; Wagoner, T. C.; Killebrew, K. L. [Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States); and others

    2014-05-15

    Imploding wire arrays on the 20 MA Z generator have recently provided some of the most powerful and energetic laboratory sources of multi-keV photons, including ?375?kJ of Al K-shell emission (h????1–2?keV), ?80?kJ of stainless steel K-shell emission (h????5–9?keV) and a kJ-level of Mo K-shell emission (h????17?keV). While the global implosion dynamics of these different wire arrays are very similar, the physical process that dominates the emission from these x-ray sources fall into three broad categories. Al wire arrays produce a column of plasma with densities up to ?3?×?10{sup 21} ions/cm{sup 3}, where opacity inhibits the escape of K-shell photons. Significant structure from instabilities can reduce the density and increase the surface area, therefore increase the K-shell emission. In contrast, stainless steel wire arrays operate in a regime where achieving a high pinch temperature (achieved by thermalizing a high implosion kinetic energy) is critical and, while opacity is present, it has less impact on the pinch emissivity. At higher photon energies, line emission associated with inner shell ionization due to energetic electrons becomes important.

  11. Atom penetration from a thin film into the substrate during sputtering by polyenergetic Ar{sup +} ion beam with mean energy of 9.4 keV

    SciTech Connect (OSTI)

    Kalin, B.A.; Gladkov, V.P.; Volkov, N.V.; Sabo, S.E. [Moscow Engineering Physics Inst. (Russian Federation)

    1995-12-31

    Penetration of alien atoms (Be, Ni) into Be, Al, Zr, Si and diamond was investigated under Ar{sup +} ion bombardment of samples having thermally evaporated films of 30--50 nm. Sputtering was carried out using a wide energy spectrum beam of Ar{sup +} ions of 9.4 keV to dose D = 1 {times} 10{sup 16}--10{sup 19} ion/cm{sup 2}. Implanted atom distribution in the targets was measured by Rutherford backscattering spectrometry (RBS) of H{sup +} and He{sup +} ions with energy of 1.6 MeV as well as secondary ion mass-spectrometry (SIMS). During the bombardment, the penetration depth of Ar atoms increases with dose linearly. This depth is more than 3--20 times deeper than the projected range of bombarding ions and recoil atoms. This is a deep action effect. The analysis shows that the experimental data for foreign atoms penetration depth are similar to the data calculated for atom migration through the interstitial site in a field of internal (lateral) compressive stresses created in the near-surface layer of the substrate as a result of implantation. Under these experimental conditions atom ratio r{sub i}/r{sub m} (r{sub i} -- radius of dopant, r{sub m} -- radius target of substrate) can play a principal determining role.

  12. Moiré deflectometry using the Talbot-Lau interferometer as refraction diagnostic for High Energy Density plasmas at energies below 10 keV

    SciTech Connect (OSTI)

    Valdivia, M. P.; Stutman, D.; Finkenthal, M.

    2014-07-15

    The highly localized density gradients expected in High Energy Density (HED) plasma experiments can be characterized by x-ray phase-contrast imaging in addition to conventional attenuation radiography. Moiré deflectometry using the Talbot-Lau grating interferometer setup is an attractive HED diagnostic due to its high sensitivity to refraction induced phase shifts. We report on the adaptation of such a system for operation in the sub-10 keV range by using a combination of free standing and ultrathin Talbot gratings. This new x-ray energy explored matches well the current x-ray backlighters used for HED experiments, while also enhancing phase effects at lower electron densities. We studied the performance of the high magnification, low energy Talbot-Lau interferometer, for single image phase retrieval using Moiré fringe deflectometry. Our laboratory and simulation studies indicate that such a device is able to retrieve object electron densities from phase shift measurements. Using laboratory x-ray sources from 7 to 15 ?m size we obtained accurate simultaneous measurements of refraction and attenuation for both sharp and mild electron density gradients.

  13. Precise validation of neutron cross section data bases using a lead slowing down spectrometer and simulation from 0.1 eV to 40 keV. Methodology and data on thin and thick targets and data bases adjustement

    E-Print Network [OSTI]

    L. Perrot; A. Billebaud; R. Brissot; A. Giorni; D. Heuer; J. -M. Loiseaux; O. Meplan; J. -B. Viano

    2002-01-09

    Research on accelerator driven systems (ADS), related new fuels and their ability for nuclear waste incineration has led to a revival of interest in nuclear cross sections of many nuclides over a large energy range. Discrepancies observed between nuclear data bases require new measurements in several cases. A complete measurement of such cross sections including resonance resolution consists of an extensive beam time experiment associated to a long process of analysis ans validation. With a slowing down spectrometer associated to a pulsed neutron source, it is possible to determine good cross section profile in an energy range from 0.1 eV to 40 keV. These measurements performed at ISN (Grenoble) with neutron source GENEPI requires only small quantities of matter (as small as 0.1 g) and about one day of beam per target.

  14. A panoply of insertion devices at SOLEIL for a wide spectral range and flexible polarisation

    SciTech Connect (OSTI)

    Couprie, M. E.; Benabderrahmane, C.; Berteaud, P.; Briquez, F.; Chapuis, L.; Elajjouri, T.; Marteau, F.; Filhol, J. M.; Kitegi, C.; Marcouille, O.; Massal, M.; Valleau, M.; Veteran, J.; Chubar, O.

    2010-06-23

    The SOLEIL storage ring presents a very high fraction of its circumference dedicated to accommodate Insertion Devices (ID). Over the 25 presently planned insertion devices presenting a large variety of systems, 16 have been already installed and commissioned in September 2009. The UV-VUV region is covered with electromagnetic devices, offering tuneable polarisations. An electromagnet/permanent magnet undulator using copper sheets coils for fast switching of the helicity is under construction. 13 APPLE-II type undulators, with period ranging from 80 down to 36 mm, provide photons in the 0.1-10 keV region, some of them featuring tapering or quasi-periodicity. Five U20 in vacuum undulators cover typically the 3-30 keV range whereas an in vacuum wiggler, with compensation of the magnetic forces via adequate springs will cover the 10-50 keV spectral domain. R and D on cryogenic in-vacuum undulator is also under progress. A magnetic chicane using permanent magnet dipoles has also been designed in order to accommodate two canted undulators on the same straight section. A wiggler dedicated to slicing (production of femto second long pulses) is also being designed, its radiation will also serve for an X-ray beamline.

  15. Effective range function below threshold

    E-Print Network [OSTI]

    A. Deloff

    2000-06-26

    We demonstrate that the kernel of the Lippmann-Schwinger equation, associated with interactions consisting of a sum of the Coulomb plus a short range nuclear potential, below threshold becomes degenerate. Taking advantage of this fact, we present a simple method of calculating the effective range function for negative energies. This may be useful in practice since the effective range expansion extrapolated to threshold allows to extract low-energy scattering parameters: the Coulomb-modified scattering length and the effective range.

  16. 20-100 keV properties of cataclysmic variables detected in the INTEGRAL/IBIS survey

    E-Print Network [OSTI]

    E. J. Barlow; C. Knigge; A. J. Bird; A. J. Dean; D. J. Clark; A. B. Hill; M. Molina; V. Sguera

    2006-07-20

    Analysis of INTEGRAL/IBIS survey observations has revealed that the rare intermediate polar and asynchronous polar cataclysmic variables are consistently found to emit in the 20-100 keV energy band, whereas synchronous polars and the common non-magnetic CVs rarely do so. From the correlation of a candidate INTEGRAL/IBIS survey source list with a CV catalogue, 15 CV detections by IBIS have been established including a new INTEGRAL source IGR J06253+7334. The properties of these sources and 4 additional CV candidates are discussed in the context of their 20-100 keV emission characteristics and we conclude that the INTEGRAL mission is an important tool in the detection of new magnetic CV systems. Furthermore, analysis of the time-averaged spectra of CVs detected by INTEGRAL indicate that although there is little difference between the spectral slopes of the different sub-types, intermediate polars may be considerably more luminous than polars in the soft gamma-ray regime. We also present the detection of an unusual high-energy burst from V1223 Sgr discovered by inspection of the IBIS light-curve. Additionally, we have compared the IBIS and optical AAVSO light-curves of SS Cyg and extracted IBIS spectra during single periods of optical outburst and quiescence. We find that the 20-100 keV flux is an order of magnitude greater during optical quiescence. This is in agreement with previous studies which show that the hard X-ray component of SS Cyg is suppressed during high accretion states

  17. Search for Anomalous Scattering of keV Neutrons from H2O-D2O Mixtures R. Moreh,1,2,* R. C. Block,2

    E-Print Network [OSTI]

    Danon, Yaron

    Search for Anomalous Scattering of keV Neutrons from H2O-D2O Mixtures R. Moreh,1,2,* R. C. Block,2 (Received 20 January 2005; published 12 May 2005) We measured the neutron scattering intensities from pure Linac and the final energy of the scattered neutrons was fixed at 24.3 keV using a 20 cm thick pure iron

  18. Strengths of the resonances at 436, 479, 639, 661, and 1279 keV in the $^{22}$Ne(p,$?$)$^{23}$Na reaction

    E-Print Network [OSTI]

    Rosanna Depalo; Francesca Cavanna; Federico Ferraro; Alessandra Slemer; Tariq Al-Abdullah; Shavkat Akhmadaliev; Michael Anders; Daniel Bemmerer; Zoltán Elekes; Giovanni Mattei; Stefan Reinicke; Konrad Schmidt; Carlo Scian; Louis Wagner

    2015-07-14

    The $^{22}$Ne(p,$\\gamma$)$^{23}$Na reaction is included in the neon-sodium cycle of hydrogen burning. A number of narrow resonances in the Gamow window dominates the thermonuclear reaction rate. Several resonance strengths are only poorly known. As a result, the $^{22}$Ne(p,$\\gamma$)$^{23}$Na thermonuclear reaction rate is the most uncertain rate of the cycle. Here, a new experimental study of the strengths of the resonances at 436, 479, 639, 661, and 1279 keV proton beam energy is reported. The data have been obtained using a tantalum target implanted with $^{22}$Ne. The strengths $\\omega\\gamma$ of the resonances at 436, 639, and 661 keV have been determined with a relative approach, using the 479 and 1279 keV resonances for normalization. Subsequently, the ratio of resonance strengths of the 479 and 1279 keV resonances was determined, improving the precision of these two standards. The new data are consistent with, but more precise than, the literature with the exception of the resonance at 661 keV, which is found to be less intense by one order of magnitude. In addition, improved branching ratios have been determined for the gamma decay of the resonances at 436, 479, and 639 keV.

  19. The X-ray Properties of Low-Frequency Quasi-Periodic Oscillations from GRS 1915+105 up to 120 keV

    E-Print Network [OSTI]

    John A. Tomsick; Philip Kaaret

    2000-09-21

    We present a study of the properties of strong 0.8-3.0 Hz quasi-periodic oscillations (QPOs) that occurred during 1997 RXTE observations of the microquasar GRS 1915+105 in the low-hard state. The high count rates allow us to track individual QPO peaks, and we exploit this to develop a QPO folding technique. In contrast to previous QPO studies with RXTE, we emphasize the high energy QPO properties and report the detection of a QPO in the 60-124 keV energy band. Our technique allows us, for the first time, to measure the phase of the QPO harmonics relative to the fundamental. Variation in this phase difference leads to changes in the shape of the QPO profile with energy and over time. The strength of the QPO fundamental increases up to 19 keV, but the data do not suggest that the strength continues to increase above this energy. In some cases, the QPO amplitudes in the 30-60 keV and 60-124 keV energy bands are significantly less than in the 13-19 keV and 19-29 keV energy bands. We also use our technique to measure the phase lag of the QPO fundamental and harmonics. In the case where negative phase lags are detected for the fundamental, positive phase lags are detected for the first harmonic.

  20. Strengths of the resonances at 436, 479, 639, 661, and 1279 keV in the $^{22}$Ne(p,$?$)$^{23}$Na reaction

    E-Print Network [OSTI]

    Rosanna Depalo; Francesca Cavanna; Federico Ferraro; Alessandra Slemer; Tariq Al-Abdullah; Shavkat Akhmadaliev; Michael Anders; Daniel Bemmerer; Zoltán Elekes; Giovanni Mattei; Stefan Reinicke; Konrad Schmidt; Carlo Scian; Louis Wagner

    2015-09-18

    The $^{22}$Ne(p,$\\gamma$)$^{23}$Na reaction is included in the neon-sodium cycle of hydrogen burning. A number of narrow resonances in the Gamow window dominates the thermonuclear reaction rate. Several resonance strengths are only poorly known. As a result, the $^{22}$Ne(p,$\\gamma$)$^{23}$Na thermonuclear reaction rate is the most uncertain rate of the cycle. Here, a new experimental study of the strengths of the resonances at 436, 479, 639, 661, and 1279 keV proton beam energy is reported. The data have been obtained using a tantalum target implanted with $^{22}$Ne. The strengths $\\omega\\gamma$ of the resonances at 436, 639, and 661 keV have been determined with a relative approach, using the 479 and 1279 keV resonances for normalization. Subsequently, the ratio of resonance strengths of the 479 and 1279 keV resonances was determined, improving the precision of these two standards. The new data are consistent with, but more precise than, the literature with the exception of the resonance at 661 keV, which is found to be less intense by one order of magnitude. In addition, improved branching ratios have been determined for the gamma decay of the resonances at 436, 479, and 639 keV.

  1. Strengths of the resonances at 436, 479, 639, 661, and 1279 keV in the $^{22}$Ne(p,$?$)$^{23}$Na reaction

    E-Print Network [OSTI]

    Rosanna Depalo; Francesca Cavanna; Federico Ferraro; Alessandra Slemer; Tariq Al-Abdullah; Shavkat Akhmadaliev; Michael Anders; Daniel Bemmerer; Zoltán Elekes; Giovanni Mattei; Stefan Reinicke; Konrad Schmidt; Carlo Scian; Louis Wagner

    2015-10-21

    The $^{22}$Ne(p,$\\gamma$)$^{23}$Na reaction is included in the neon-sodium cycle of hydrogen burning. A number of narrow resonances in the Gamow window dominates the thermonuclear reaction rate. Several resonance strengths are only poorly known. As a result, the $^{22}$Ne(p,$\\gamma$)$^{23}$Na thermonuclear reaction rate is the most uncertain rate of the cycle. Here, a new experimental study of the strengths of the resonances at 436, 479, 639, 661, and 1279 keV proton beam energy is reported. The data have been obtained using a tantalum target implanted with $^{22}$Ne. The strengths $\\omega\\gamma$ of the resonances at 436, 639, and 661 keV have been determined with a relative approach, using the 479 and 1279 keV resonances for normalization. Subsequently, the ratio of resonance strengths of the 479 and 1279 keV resonances was determined, improving the precision of these two standards. The new data are consistent with, but more precise than, the literature with the exception of the resonance at 661 keV, which is found to be less intense by one order of magnitude. In addition, improved branching ratios have been determined for the gamma decay of the resonances at 436, 479, and 639 keV.

  2. A survey for Fe 6.4 keV emission in young stellar objects in rho Oph: the strong fluorescence from Elias 29

    E-Print Network [OSTI]

    F. Favata; G. Micela; B. Silva; S. Sciortino; M. Tsujimoto

    2004-12-20

    We report the results of a search for 6.4 keV Fe fluorescent emission in Young Stellar Objects (YSOs) with measured accretion luminosities in the rho Oph cloud, using all existing chandra and XMM-Newton observations of the region. A total of nine such YSOs have X-ray data with sufficiently high S/N for the 6.4 keV line to be potentially detected if present. A positive detection of the Fe 6.4 keV line is reported for one object, Elias 29, in both the XMM-Newton and the chandra data. The 6.4 keV line is detected in Elias 29 both during quiescent and flaring emission, unlikely all previously reported detections of 6.4 keV Fe fluorescence in YSOs which were made during intense flaring. The observed equivalent width of the fluorescent line is large, at W_alpha approx 140 eV, ruling out fluorescence from diffuse circumstellar material. It is also larger than expected for simple reflection from a solar-composition photosphere or circumstellar disk, but it is compatible with being due to fluorescence from a centrally illuminated circumstellar disk. The X-ray spectrum of Elias 29 is also peculiar in terms of its high (ionized) Fe abundance, as evident from the very intense Fe xxv 6.7 keV line emission; we speculate on the possible mechanism leading to the observed high abundance.

  3. Enhancement of the 6.4 keV line in the inner Galactic ridge: Proton-induced fluorescence?

    E-Print Network [OSTI]

    Nobukawa, K K; Uchiyama, H; Tsuru, T G; Torii, K; Tanaka, T; Chernyshov, D O; Fukui, Y; Dogiel, V A; Koyama, K

    2015-01-01

    A common idea for the origin of the Galactic diffuse X-ray emission, particularly that of the iron lines from neutral and highly ionized atoms, is a superposition of many cataclysmic variables and coronally active binaries. In this scenario, the flux should symmetrically distribute between the east and west on the plane with respect to Sagittarius A$^*$ because the stellar mass distribution determined by infrared observations is nearly symmetric. This symmetry is confirmed for the highly ionized iron line as well as the continuum emission. However, a clear excess of the neutral iron line in the near east of the Galactic center compared to the near-west side is found. The flux distribution of the excess emission well correlates with molecular column density. The X-ray spectrum of the excess emission is described by a power-law continuum plus a 6.4 keV line with the large equivalent width of $\\sim1.3$ keV, which is hardly explained by the low-energy electron bombardment scenario. The longitudinal and latitudina...

  4. New production mechanism for keV sterile neutrino Dark Matter by decays of frozen-in scalars

    SciTech Connect (OSTI)

    Merle, Alexander [Physics and Astronomy, University of Southampton, Highfield, Southampton, SO17 1BJ (United Kingdom); Niro, Viviana [Departament d'Estructura i Constituents de la Matèria and Institut de Ciències del Cosmos, Universitat de Barcelona, Diagonal 647, E-08028 Barcelona (Spain); Schmidt, Daniel, E-mail: a.merle@soton.ac.uk, E-mail: niro@ecm.ub.edu, E-mail: Daniel.Schmidt@mpi-hd.mpg.de [Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany)

    2014-03-01

    We propose a new production mechanism for keV sterile neutrino Dark Matter. In our setting, we assume the existence of a scalar singlet particle which never entered thermal equilibrium in the early Universe, since it only couples to the Standard Model fields by a really small Higgs portal interaction. For suitable values of this coupling, the scalar can undergo the so-called freeze-in process, and in this way be efficiently produced in the early Universe. These scalars can then decay into keV sterile neutrinos and produce the correct Dark Matter abundance. While similar settings in which the scalar does enter thermal equilibrium and then freezes out have been studied previously, the mechanism proposed here is new and represents a versatile extension of the known case. We perform a detailed numerical calculation of the DM production using a set of coupled Boltzmann equations, and we illustrate the successful regions in the parameter space. Our production mechanism notably can even work in models where active-sterile mixing is completely absent.

  5. do you know your RANGE

    E-Print Network [OSTI]

    Hoffman, Garlyn O.

    1957-01-01

    need a good knowledge of range man- asemen2 b~f~re m~kjng CID?E CD~~B~~DDS DY range plots as is required in Part 111. An ex- ample of Part I11 is on page 12. The four range plots are placed just exactly like placing a class of livestock at a stock... good cover of native grass. Grass is a product which is harvested and marketed as meat, ~uool, mohair and wildlife. When you market animals you are paid for the number of poz~nds rather than the number of head you sell. By practicing good range m...

  6. Extended range chemical sensing apparatus

    DOE Patents [OSTI]

    Hughes, R.C.; Schubert, W.K.

    1994-01-18

    An apparatus is described for sensing chemicals over extended range of concentrations. In particular, first and second sensors each having separate, but overlapping ranges for sensing concentrations of hydrogen are provided. Preferably, the first sensor is a MOS solid state device wherein the metal electrode or gate is a nickel alloy. The second sensor is a chemiresistor comprising a nickel alloy. 6 figures.

  7. PACIFIC SOUTHWEST Forest and Range

    E-Print Network [OSTI]

    PACIFIC SOUTHWEST Forest and Range Experiment Station Ash Leachate Can Reduce Surface Erosion leachate can reduce surface erosion. Res. Note PSW-342, 4 p., illus. Pacific Southwest Forest and Range Exp from north- western California, ash leachate flocculated the clay frac- tions. As a result, the soil

  8. Range Searching in Categorical Data: Colored Range Searching on Grid

    E-Print Network [OSTI]

    Agarwal, Pankaj K.

    , gsat @cs.duke.edu ¾ AT&T Labs, Shannon Laboratory, 180 Park Ave., Florham Park, NJ 07932. muthu each stock has a category that is the industry sector it belongs to, and we consider a range

  9. A survey for Fe 6.4 keV emission in young stellar objects in rho Oph: the strong fluorescence from Elias 29

    E-Print Network [OSTI]

    Favata, F; Silva, B; Sciortino, S; Tsujimoto, M

    2004-01-01

    We report the results of a search for 6.4 keV Fe fluorescent emission in Young Stellar Objects (YSOs) with measured accretion luminosities in the rho Oph cloud, using all existing chandra and XMM-Newton observations of the region. A total of nine such YSOs have X-ray data with sufficiently high S/N for the 6.4 keV line to be potentially detected if present. A positive detection of the Fe 6.4 keV line is reported for one object, Elias 29, in both the XMM-Newton and the chandra data. The 6.4 keV line is detected in Elias 29 both during quiescent and flaring emission, unlikely all previously reported detections of 6.4 keV Fe fluorescence in YSOs which were made during intense flaring. The observed equivalent width of the fluorescent line is large, at W_alpha approx 140 eV, ruling out fluorescence from diffuse circumstellar material. It is also larger than expected for simple reflection from a solar-composition photosphere or circumstellar disk, but it is compatible with being due to fluorescence from a centrally...

  10. Strengths of the resonances at 436, 479, 639, 661, and 1279 keV in the $^{22}$Ne(p,$\\gamma$)$^{23}$Na reaction

    E-Print Network [OSTI]

    Depalo, Rosanna; Ferraro, Federico; Slemer, Alessandra; Al-Abdullah, Tariq; Akhmadaliev, Shavkat; Anders, Michael; Bemmerer, Daniel; Elekes, Zoltán; Mattei, Giovanni; Reinicke, Stefan; Schmidt, Konrad; Scian, Carlo; Wagner, Louis

    2015-01-01

    The $^{22}$Ne(p,$\\gamma$)$^{23}$Na reaction is included in the neon-sodium cycle of hydrogen burning. A number of narrow resonances in the Gamow window dominates the thermonuclear reaction rate. Several resonance strengths are only poorly known. As a result, the $^{22}$Ne(p,$\\gamma$)$^{23}$Na thermonuclear reaction rate is the most uncertain rate of the cycle. Here, a new experimental study of the strengths of the resonances at 436, 479, 639, 661, and 1279 keV proton beam energy is reported. The data have been obtained using a tantalum target implanted with $^{22}$Ne. The strengths $\\omega\\gamma$ of the resonances at 436, 639, and 661 keV have been determined with a relative approach, using the 479 and 1279 keV resonances for normalization. Subsequently, the ratio of resonance strengths of the 479 and 1279 keV resonances was determined, improving the precision of these two standards. The new data are consistent with, but more precise than, the literature with the exception of the resonance at 661 keV, which i...

  11. Comment to the paper: 'Seeded quantum FEL at 478 keV' AIP Conf. Proc. 'Light at Extreme Intensities' 1462 173-176 (2012)'

    E-Print Network [OSTI]

    Vittoria Petrillo

    2012-12-19

    We criticize the thesis exposed the paper 'Seeded quantum FEL at 478 keV' AIP Conf. Proc. 'Light at Extreme Intensities,' 1462 173-176 (2012), which presents the possibility of producing gamma rays at 478 KeV by means of a seeded quantum FEL driven by an electron beam at 125 MeV, current I=40 A, interacting with an infrared laser. We show that, in the case analyzed, the FEL Pierce parameter has a value two orders of magnitude less than what claimed in the paper in question, overturning the conclusions of the analysis.

  12. PACIFIC SOUTHWEST Forest and Range

    E-Print Network [OSTI]

    of forest stands is valuable for studies of the physical environment. Energy balance research centers on howPACIFIC SOUTHWEST Forest and Range Experiment Station FOREST SERVICE U.S. DEPARTMENT in relation to climatic and stand variables USDA FOREST SERVICE RESEARCH PAPER PSW- 71 /1971 #12;CONTENTS

  13. Forest and Range Experiment Station

    E-Print Network [OSTI]

    wider range of suppliers. As working circles beyond the size of a single National Forest have recently. Alternatives for expansion of working circles must be assessed in light of present Forest Service timber management policy and the impacts of timber supply. These alternates include (a) combination of National

  14. NAME G RADING KEV

    E-Print Network [OSTI]

    J11 1 “)3 (om “lime. n I; fern“) v---.1Pt {.01- mi'ssv' lw,d.A,£7tC. (8) 2. [4 sec4xtanzvdx ___._ § 3 (0m. that. onl do? ml. mu. 0 (56¢ X SQLX ibmx 0i) .: lQQCA'XJ a: y ...

  15. Bent-crystal Laue spectrograph for measuring x-ray spectra (15keV)

    SciTech Connect (OSTI)

    Failor, B. H.; Wong, S.; Riordan, J. C.; Hudson, L. T.; O'Brien, C. M.; Seltzer, S. M.; Seiler, S.; Pressley, L.; Lojewski, D. Y.

    2006-10-15

    A bent-crystal Laue {l_brace}or Cauchois [J. Phys. Radium 3, 320 (1932)] geometry{r_brace} spectrograph is a good compromise between sensitivity and spectral resolution for measuring x-ray spectra (15keV) from large area x-ray sources because source-size spectral broadening is mitigated. We have designed, built, and tested such a spectrograph for measuring the spectra from electron-beam x-ray sources with diameters as large as 30 cm. The same spectrograph geometry has also been used to diagnose (with higher spectral resolution) smaller sources, such as x-ray tubes for mammography and laser-driven inertial fusion targets. We review our spectrograph design and describe the performance of different components. We have compared the reflectivity and spectral resolution of LiF, and Ge diffracting crystals. We have also measured the differences in sensitivity and spectral resolution using different x-ray to light converters (plastic scintillator, CsI, and Gd{sub 2}O{sub 2}S) fiber optically coupled to an intensified charge-coupled device camera. We have also coupled scintillating fibers to photomultiplier tubes to obtain temporal records for discrete energy channels.

  16. Cross-field diffusion of energetic (100 keV to 2 MeV) protons in interplanetary space

    SciTech Connect (OSTI)

    Costa Jr, Edio da [Instituto Federal de Minas Gerais-IFMG, Ouro Preto, MG, 35400-000 (Brazil); Tsurutani, Bruce T. [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States); Alves, Maria Virgínia; Echer, Ezequiel [Instituto Nacional de Pesquisas Espaciais-INPE, São José dos Campos, SP, 12227-010 (Brazil); Lakhina, Gurbax S., E-mail: edio.junior@ifmg.edu.br, E-mail: costajr.e@gmail.com [Indian Institute for Geomagnetism, Navi Mumbai 410 218 (India)

    2013-12-01

    Magnetic field magnitude decreases (MDs) are observed in several regions of the interplanetary medium. In this paper, we characterize MDs observed by the Ulysses spacecraft instrumentation over the solar south pole by using magnetic field data to obtain the empirical size, magnetic field MD, and frequency of occurrence distribution functions. The interaction of energetic (100 keV to 2 MeV) protons with these MDs is investigated. Charged particle and MD interactions can be described by a geometrical model allowing the calculation of the guiding center shift after each interaction. Using the distribution functions for the MD characteristics, Monte Carlo simulations are used to obtain the cross-field diffusion coefficients as a function of particle kinetic energy. It is found that the protons under consideration cross-field diffuse at a rate of up to ?11% of the Bohm rate. The same method used in this paper can be applied to other space regions where MDs are observed, once their local features are well known.

  17. 60 keV Ar?-ion induced modification of microstructural, compositional, and vibrational properties of InSb

    SciTech Connect (OSTI)

    Datta, D. P.; Garg, S. K.; Som, T., E-mail: tsom@iopb.res.in [SUNAG Laboratory, Institute of Physics, Bhubaneswar, Odisha 751005 (India); Satpati, B. [Surface Physics and Materials Science Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064 (India); Sahoo, P. K. [School of Physical Sciences, National Institute of Science Education and Research, Bhubaneswar 751005, Odisha (India); Kanjilal, A. [Department of Physics, Shiv Nadar University, Uttar Pradesh 203207 (India); Dhara, S. [Surface and Nanoscience Division, Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102 (India); Kanjilal, D. [Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067 (India)

    2014-10-14

    Room temperature irradiation of InSb(111) by 60 keV Ar?-ions at normal (0°) and oblique (60°) angles of incidence led to the formation of nanoporous structure in the high fluence regime of 1×10¹? to 3×10¹? ions cm?². While a porous layer comprising of a network of interconnected nanofibers was generated by normal ion incidence, evolution of plate-like structures was observed for obliquely incident ions. Systematic studies of composition and structure using energy dispersive x-ray spectroscopy, Raman spectroscopy, x-ray photoelectron spectroscopy, Raman mapping, grazing incidence x-ray diffraction, and cross-sectional transmission electron microscopy revealed a high degree of oxidation of the ion-induced microstructures with the presence of In?O? and Sb?O? phases and presence of nanocrystallites within the nanoporous structures. The observed structural evolution was understood in terms of processes driven by ion-induced defect accumulation within InSb.

  18. Scattering of 64 eV to 3 keV Neutrons from Polyethylene and Graphite and the Coherence Length Problem

    E-Print Network [OSTI]

    Danon, Yaron

    Scattering of 64 eV to 3 keV Neutrons from Polyethylene and Graphite and the Coherence Length 12180, USA (Received 31 August 2005; published 8 February 2006) We measured the neutron scattering by the neutron coherence length. The scattered intensity ratios were found to conform to conventional

  19. Energy Loss by keV Ions in Silicon H. O. Funsten, S. M. Ritzau,* R.W. Harper, and J. E. Borovsky

    E-Print Network [OSTI]

    Johnson, Robert E.

    Energy Loss by keV Ions in Silicon H. O. Funsten, S. M. Ritzau,* R.W. Harper, and J. E. Borovsky with an ultrathin passivation layer, the average total energy lost to silicon target electrons (electronic stopping) by incident low energy ions and the recoil target atoms they generate is directly measured. We find

  20. Capture of a neutron to excited states of a {sup 9}Be nucleus taking into account resonance at 622 keV

    SciTech Connect (OSTI)

    Dubovichenko, S. B., E-mail: dubovichenko@gmail.com [National Space Agency of the Republic of Kazakhstan, Fessenkov Astrophysical Institute, National Space Research and Technologies Center (Kazakhstan)

    2013-10-15

    Radiative capture of a neutron to the ground and excited states of the 9Be nucleus is considered using the potential cluster model with forbidden states and with classification of cluster states by the Young schemes taking into account resonance at 622 keV for thermal and astrophysical energies.

  1. Range determination for scannerless imaging

    DOE Patents [OSTI]

    Muguira, Maritza Rosa (Albuquerque, NM); Sackos, John Theodore (Albuquerque, NM); Bradley, Bart Davis (Albuquerque, NM); Nellums, Robert (Albuquerque, NM)

    2000-01-01

    A new method of operating a scannerless range imaging system (e.g., a scannerless laser radar) has been developed. This method is designed to compensate for nonlinear effects which appear in many real-world components. The system operates by determining the phase shift of the laser modulation, which is a physical quantity related physically to the path length between the laser source and the detector, for each pixel of an image.

  2. Range gated strip proximity sensor

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1996-01-01

    A range gated strip proximity sensor uses one set of sensor electronics and a distributed antenna or strip which extends along the perimeter to be sensed. A micro-power RF transmitter is coupled to the first end of the strip and transmits a sequence of RF pulses on the strip to produce a sensor field along the strip. A receiver is coupled to the second end of the strip, and generates a field reference signal in response to the sequence of pulse on the line combined with received electromagnetic energy from reflections in the field. The sensor signals comprise pulses of radio frequency signals having a duration of less than 10 nanoseconds, and a pulse repetition rate on the order of 1 to 10 MegaHertz or less. The duration of the radio frequency pulses is adjusted to control the range of the sensor. An RF detector feeds a filter capacitor in response to received pulses on the strip line to produce a field reference signal representing the average amplitude of the received pulses. When a received pulse is mixed with a received echo, the mixing causes a fluctuation in the amplitude of the field reference signal, providing a range-limited Doppler type signature of a field disturbance.

  3. Range gated strip proximity sensor

    DOE Patents [OSTI]

    McEwan, T.E.

    1996-12-03

    A range gated strip proximity sensor uses one set of sensor electronics and a distributed antenna or strip which extends along the perimeter to be sensed. A micro-power RF transmitter is coupled to the first end of the strip and transmits a sequence of RF pulses on the strip to produce a sensor field along the strip. A receiver is coupled to the second end of the strip, and generates a field reference signal in response to the sequence of pulse on the line combined with received electromagnetic energy from reflections in the field. The sensor signals comprise pulses of radio frequency signals having a duration of less than 10 nanoseconds, and a pulse repetition rate on the order of 1 to 10 MegaHertz or less. The duration of the radio frequency pulses is adjusted to control the range of the sensor. An RF detector feeds a filter capacitor in response to received pulses on the strip line to produce a field reference signal representing the average amplitude of the received pulses. When a received pulse is mixed with a received echo, the mixing causes a fluctuation in the amplitude of the field reference signal, providing a range-limited Doppler type signature of a field disturbance. 6 figs.

  4. INTEGRAL Cross-calibration Status: Crab observations between 3 keV and 1 MeV

    E-Print Network [OSTI]

    E. Jourdain; D. Gotz; N. J. Westergaard; L. Natalucci; J. P. Roques

    2008-10-03

    We present results of Crab observations by the INTEGRAL instruments. A simultaneous fit allows us to demonstrate that INTEGRAL provides reliable spectra over its wide energy range.

  5. Extended-range tiltable micromirror

    DOE Patents [OSTI]

    Allen, James J. (Albuquerque, NM); Wiens, Gloria J. (Newberry, FL); Bronson, Jessica R. (Gainesville, FL)

    2009-05-05

    A tiltable micromirror device is disclosed in which a micromirror is suspended by a progressive linkage with an electrostatic actuator (e.g. a vertical comb actuator or a capacitive plate electrostatic actuator) being located beneath the micromirror. The progressive linkage includes a pair of torsion springs which are connected together to operate similar to a four-bar linkage with spring joints. The progressive linkage provides a non-linear spring constant which can allow the micromirror to be tilted at any angle within its range substantially free from any electrostatic instability or hysteretic behavior.

  6. Range Fuels | 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 QA:QA J-E-1 SECTION J APPENDIX ECoop Inc Jump to:Newberg,Energy LLCALLETEREFU Elektronik GmbHRahusRamkyRange Fuels Jump

  7. Range Resources | 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 QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS Report UrlNM-b < RAPID‎Wind Farm Jump to:Randsburg,Range

  8. The INTEGRAL/SPI 511 keV Signal from Hidden Valleys in Type Ia and Core Collapse Supernova Explosions

    E-Print Network [OSTI]

    Hooman Davoudiasl; Gilad Perez

    2010-04-03

    We examine under what circumstances the INTEGRAL/SPI 511 keV signal can originate from decays of MeV-scale composite states produced by: (A) thermonuclear (type Ia) or (B) core collapse supernovae (SNe). The requisite dynamical properties that would account for the observed data are quite distinct, for cases (A) and (B). We determine these requirements in simple hidden valley models, where the escape fraction problem is naturally addressed, due to the long lifetime of the new composite states. A novel feature of scenario (A) is that the dynamics of type Ia SNe, standard candles for cosmological measurements, might be affected by our mechanism. In case (A), the mass of the state mediating between the hidden sector and the SM $\\ee$ could be a few hundred GeV and within the reach of a 500 GeV $\\ee$ linear collider. We also note that kinetic mixing of the photon with a light vector state may provide an interesting alternate mediation mechanism in this case. Scenarios based on case (B) are challenged by the need for a mechanism to transport some of the produced positrons toward the Galactic bulge, due to the inferred distribution of core collapse sources. The mass of the mediator in case (B) is typically hundreds of TeV, leading to long-lived particles that could, under certain circumstances, include a viable dark matter candidate. The appearance of long-lived particles in typical models leads to cosmological constraints and we address how a consistent cosmic history may be achieved.

  9. Evaluation of the ²³?Pu prompt fission neutron spectrum induced by neutrons of 500 keV and associated covariances

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

    Neudecker, D.; Talou, P.; Kawano, T.; Smith, D. L.; Capote, R.; Rising, M. E.; Kahler, A. C.

    2015-08-01

    We present evaluations of the prompt fission neutron spectrum (PFNS) of ²³?Pu induced by 500 keV neutrons, and associated covariances. In a previous evaluation by Talou et al. 2010, surprisingly low evaluated uncertainties were obtained, partly due to simplifying assumptions in the quantification of uncertainties from experiment and model. Therefore, special emphasis is placed here on a thorough uncertainty quantification of experimental data and of the Los Alamos model predicted values entering the evaluation. In addition, the Los Alamos model was extended and an evaluation technique was employed that takes into account the qualitative differences between normalized model predicted valuesmore »and experimental shape data. These improvements lead to changes in the evaluated PFNS and overall larger evaluated uncertainties than in the previous work. However, these evaluated uncertainties are still smaller than those obtained in a statistical analysis using experimental information only, due to strong model correlations. Hence, suggestions to estimate model defect uncertainties are presented, which lead to more reasonable evaluated uncertainties. The calculated keff of selected criticality benchmarks obtained with these new evaluations agree with each other within their uncertainties despite the different approaches to estimate model defect uncertainties. The keff one standard deviations overlap with some of those obtained using ENDF/B-VII.1, albeit their mean values are further away from unity. Spectral indexes for the Jezebel critical assembly calculated with the newly evaluated PFNS agree with the experimental data for selected (n,?) and (n,f) reactions, and show improvements for high-energy threshold (n,2n) reactions compared to ENDF/B-VII.1.« less

  10. Live Fire Range Environmental Assessment

    SciTech Connect (OSTI)

    1993-08-01

    The Central Training Academy (CTA) is a DOE Headquarters Organization located in Albuquerque, New Mexico, with the mission to effectively and efficiently educate and train personnel involved in the protection of vital national security interests of DOE. The CTA Live Fire Range (LFR), where most of the firearms and tactical training occurs, is a complex separate from the main campus. The purpose of the proposed action is to expand the LFR to allow more options of implementing required training. The Department of Energy has prepared this Environmental Assessment (EA) for the proposed construction and operation of an expanded Live Fire Range Facility at the Central Training Academy in Albuquerque, New Mexico. Based on the analysis in the EA, DOE has determined that the proposed action is not a major Federal action significantly affecting the quality of the human environment, within the meaning of the National Environmental Policy Act (NEPA) of 1969. Therefore, the preparation of an environmental impact statement is not required and DOE is issuing this Finding of No Significant Impact (FONSI).

  11. First Lasing of Volume FEL (VFEL) at Wavelength Range $?\\sim $ 4-6 mm

    E-Print Network [OSTI]

    V. Baryshevsky; K. Batrakov; A. Gurinovich; I. Ilienko; A. Lobko; V. Moroz; P. Sofronov; V. Stolyarsky

    2001-07-18

    First lasing of volume free electron laser (VFEL) is described. The generating system consists of two metal diffraction grating with different spatial periods. The first grating creates the conditions for Smith Purcell emission mechanism. The second grating provides the distributed feedback for emitted wave. The length of diffraction grating is 10 cm. Electron beam pulse with a time duration $\\tau \\sim$ 10 ms has a sinusoidal form with the amplitude varied from 1 to ~10 kV. The measured microwave power reached the value of about 3-4 W in mm wavelength range. The generation stops at threshold current value. When the current tends to the threshold value, the region of generation tends to a narrow band near to 5 kV. At higher current values the radiation appears in electron energy range 5 - 7.5 KeV.

  12. 60 KEV 30 KW ELECTRON BEAM FACILITY FOR ELECTRON BEAM Yu.I.Semenov, V.E.Akimov, M.A.Batazova, B.A.Dovzhenko, V.V.Ershov, A.R.Frolov,

    E-Print Network [OSTI]

    Kozak, Victor R.

    60 KEV 30 KW ELECTRON BEAM FACILITY FOR ELECTRON BEAM TECHNOLOGY Yu.I.Semenov, V.E.Akimov, M Abstract At the Budker Institute of Nuclear Physics, Novosibirsk, the 60 keV 30 kW electron beam facility for electron beam technology has been developed. The electron gun provides continuous or modulated beam within

  13. Microsoft Word - Chap3 5-16-05.doc

    Office of Legacy Management (LM)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbinsMonument Valley, Arizona Processing4924Sc2Two

  14. Categorical Exclusion Determinations: B5.16 | Department of Energy

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

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a lCaribElectric power substations andPowerWorkover of5:

  15. Neutron physics of the Re/Os clock. II. The (n,n{sup '}) cross section of {sup 187}Os at 30 keV neutron energy

    SciTech Connect (OSTI)

    Mosconi, M.; Heil, M.; Kaeppeler, F.; Plag, R.; Mengoni, A.

    2010-07-15

    The inelastic neutron-scattering cross section of {sup 187}Os has been determined in a time-of-flight experiment at the Karlsruhe 3.7-MV Van de Graaff accelerator. An almost monoenergetic beam of 30-keV neutrons was produced at the threshold of the {sup 7}Li(p,n){sup 7}Be reaction. Information on the inelastic channel is required for reliable calculations of the so-called stellar enhancement factor, by which the laboratory cross section of {sup 187}Os must be corrected in order to account for the thermal population of low-lying excited states at the temperatures of s-process nucleosynthesis, in particular of the important state at 9.75 keV. This correction represents a crucial step in the interpretation of the {sup 187}Os/{sup 187}Re pair as a cosmochronometer.

  16. Compton scattering for spectroscopic detection of ultra-fast, high flux, broad energy range X-rays

    SciTech Connect (OSTI)

    Cipiccia, S.; Wiggins, S. M.; Brunetti, E.; Vieux, G.; Yang, X.; Welsh, G. H.; Anania, M.; Islam, M. R.; Ersfeld, B.; Jaroszynski, D. A. [Scottish Universities Physics Alliance, Department of Physics, University of Strathclyde, John Anderson Building, 107 Rottenrow, Glasgow G4 0NG (United Kingdom)] [Scottish Universities Physics Alliance, Department of Physics, University of Strathclyde, John Anderson Building, 107 Rottenrow, Glasgow G4 0NG (United Kingdom); Maneuski, D.; Montgomery, R.; Smith, G.; Hoek, M.; Hamilton, D. J.; Shea, V. O. [Scottish Universities Physics Alliance, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ (United Kingdom)] [Scottish Universities Physics Alliance, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ (United Kingdom); Issac, R. C. [Scottish Universities Physics Alliance, Department of Physics, University of Strathclyde, John Anderson Building, 107 Rottenrow, Glasgow G4 0NG (United Kingdom) [Scottish Universities Physics Alliance, Department of Physics, University of Strathclyde, John Anderson Building, 107 Rottenrow, Glasgow G4 0NG (United Kingdom); Research Department of Physics, Mar Athanasius College, Kothamangalam 686666, Kerala (India); Lemos, N. R. C.; Dias, J. M. [GoLP/Instituto de Plasmas eFusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisbon (Portugal)] [GoLP/Instituto de Plasmas eFusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisbon (Portugal); Symes, D. R. [Central Laser Facility, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, OX11 0QX Didcot (United Kingdom)] [Central Laser Facility, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, OX11 0QX Didcot (United Kingdom); and others

    2013-11-15

    Compton side-scattering has been used to simultaneously downshift the energy of keV to MeV energy range photons while attenuating their flux to enable single-shot, spectrally resolved, measurements of high flux X-ray sources to be undertaken. To demonstrate the technique a 1 mm thick pixelated cadmium telluride detector has been used to measure spectra of Compton side-scattered radiation from a Cobalt-60 laboratory source and a high flux, high peak brilliance X-ray source of betatron radiation from a laser-plasma wakefield accelerator.

  17. Radar range measurements in the atmosphere.

    SciTech Connect (OSTI)

    Doerry, Armin Walter

    2013-02-01

    The earth's atmosphere affects the velocity of propagation of microwave signals. This imparts a range error to radar range measurements that assume the typical simplistic model for propagation velocity. This range error is a function of atmospheric constituents, such as water vapor, as well as the geometry of the radar data collection, notably altitude and range. Models are presented for calculating atmospheric effects on radar range measurements, and compared against more elaborate atmospheric models.

  18. Lead exposure at uncovered outdoor firing ranges

    SciTech Connect (OSTI)

    Goldberg, R.L.; Hicks, A.M.; O'Leary, L.M.; London, S. (University of Southern California School of Medicine, Los Angeles (USA))

    1991-06-01

    Excessive lead exposure in shooting instructors at indoor firing ranges and covered outdoor firing ranges has been documented. The City of Los Angeles assessed exposure of its full-time shooting instructors at uncovered outdoor ranges via air monitoring and blood lead-level measurements. Results of these tests revealed that significant lead exposure and absorption can occur at outdoor firing ranges. The use of copper-jacketed ammunition may decrease air lead levels and decrease lead absorption by range instructors.

  19. Carbon-19 in Halo EFT: Effective-range parameters from Coulomb-dissociation experiments

    E-Print Network [OSTI]

    B. Acharya; Daniel R. Phillips

    2013-06-15

    We study the Coulomb dissociation of the 19C nucleus in an effective field theory that uses the 18C core and the neutron as effective degrees of freedom and exploits the separation of scales in this halo system. We extract the effective-range parameters and the separation energy of the halo neutron from the experimental data taken at RIKEN by Nakamura et al. We obtain a value of (575 +/- 55(stat.) +/- 20(EFT)) keV for the one-neutron separation energy of 19C, and (7.75 +/- 0.35(stat.) +/- 0.3(EFT)) fm for the 18C-neutron scattering length. The width of the longitudinal momentum distribution predicted by EFT using this separation energy agrees well with the experimental data taken at NSCL by Bazin et al., reaffirming the dominance of the s-wave configuration of the valence neutron.

  20. Nuclear Physics Long Range Plan | Jefferson Lab

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

    Nuclear Physics Long Range Plan June 26, 2014 For a couple of years now, we have been waiting to get started on the next nuclear physics long range plan (LRP). What does that mean?...

  1. Viking Range: Order (2014-CE-23014)

    Broader source: Energy.gov [DOE]

    DOE ordered Viking Range, LLC to pay a $8,000 civil penalty after finding Viking Range had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

  2. American Range: Order (2014-CE-23006)

    Broader source: Energy.gov [DOE]

    DOE ordered American Range Corporation to pay a $8,000 civil penalty after finding American Range had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

  3. Range Fuels Commercial-Scale Biorefinery

    Broader source: Energy.gov [DOE]

    The Range Fuels commercial-scale biorefinery will use a variety of feedstocks to create cellulosic ethanol, methanol, and power.

  4. Tonopah Test Range capabilities: technical manual

    SciTech Connect (OSTI)

    Manhart, R.L.

    1982-11-01

    This manual describes Tonopah Test Range (TTR), defines its testing capabilities, and outlines the steps necessary to schedule tests on the Range. Operated by Sandia National Laboratories, TTR is a major test facility for DOE-funded weapon programs. The Range presents an integrated system for ballistic test vehicle tracking and data acquisition. Multiple radars, optical trackers, telemetry stations, a central computer complex, and combined landline/RF communications systems assure full Range coverage for any type of test. Range operations are conducted by a department within Sandia's Field Engineering Directorate. While the overall Range functions as a complete system, it is operationally divided into the Test Measurements, Instrumentation Development, and Range Operations divisions. The primary function of TTR is to support DOE weapons test activities. Management, however, encourages other Government agencies and their contractors to schedule tests on the Range which can make effective use of its capabilities. Information concerning Range use by organizations outside of DOE is presented. Range instrumentation and support facilities are described in detail. This equipment represents the current state-of-the-art and reflects a continuing commitment by TTR management to field the most effective tracking and data acquisition system available.

  5. Range Design Criteria- June 4, 2012

    Office of Energy Efficiency and Renewable Energy (EERE)

    This document contains the currently-approved firearms "Range Design Criteria" referred to on DOE O 473.3, Protection Program Operations

  6. EM Tackles Cleanup at Tonopah Test Range

    Broader source: Energy.gov [DOE]

    NEVADA – Environmental cleanup experts spent the last weeks of summer on the Tonopah Test Range addressing contaminated equipment and debris at two historical nuclear testing locations.

  7. Formulating and Implementing Profiling over Adaptive Ranges

    E-Print Network [OSTI]

    Sherwood, Tim

    be implemented for range-adaptive profiling. RAP can be used on various profiles, such as PCs, load values may easily be lost in a sea of data. We present range-adaptive profiling (RAP) as a new and general value locality. We propose two methods of implementation of RAP, one in software and the other

  8. Search for 14.4 keV solar axions emitted in the M1-transition of 57Fe nuclei with CAST

    E-Print Network [OSTI]

    CAST Collaboration; S. Andriamonje; S. Aune; D. Autiero; K. Barth; A. Belov; B. Beltrán; H. Bräuninger; J. M. Carmona; S. Cebrián; J. I. Collar; T. Dafni; M. Davenport; L. Di Lella; C. Eleftheriadis; J. Englhauser; G. Fanourakis; E. Ferrer-Ribas; H. Fischer; J. Franz; P. Friedrich; T. Geralis; I. Giomataris; S. Gninenko; H. Gómez; M. Hasinoff; F. H. Heinsius; D. H. H. Hoffmann; I. G. Irastorza; J. Jacoby; K. Jakov?i?; D. Kang; K. Königsmann; R. Kotthaus; M. Kr?mar; K. Kousouris; M. Kuster; B. Laki?; C. Lasseur; A. Liolios; A. Ljubi?i?; G. Lutz; G. Luzón; D. Miller; J. Morales; A. Ortiz; T. Papaevangelou; A. Placci; G. Raffelt; H. Riege; A. Rodríguez; J. Ruz; I. Savvidis; Y. Semertzidis; P. Serpico; L. Stewart; J. Vieira; J. Villar; J. Vogel; L. Walckiers; K. Zioutas

    2009-12-04

    We have searched for 14.4 keV solar axions or more general axion-like particles (ALPs), that may be emitted in the M1 nuclear transition of 57Fe, by using the axion-to-photon conversion in the CERN Axion Solar Telescope (CAST) with evacuated magnet bores (Phase I). From the absence of excess of the monoenergetic X-rays when the magnet was pointing to the Sun, we set model-independent constraints on the coupling constants of pseudoscalar particles that couple to two photons and to a nucleon g_{a\\gamma} |-1.19 g_{aN}^{0}+g_{aN}^{3}|<1.36\\times 10^{-16} GeV^{-1} for m_{a}<0.03 eV at the 95% confidence level.

  9. Note: On the generation of sub-300 keV flash-X-rays using rod-pinch diode: An experimental investigation

    SciTech Connect (OSTI)

    Satyanarayana, N.; Rajawat, R. K.; Basu, Shibaji; Rao, A. Durga Prasad; Mittal, K. C.

    2014-09-15

    Generation of flash X-rays (FXRs) at less than 500 keV is described with emphasis on experimental investigation. The pulser is a Tesla transformer-Water transmission line based pulsed power generator operating in double resonance mode to power a rod-pinch diode. The configuration of aspect ratio reported here falls much below the normally reported ratios for the rod-pinch diode operation. Experimental investigation at such low pulsed voltage has revealed “flowering” of the anode tip and “pitting” of the perspex window. A possible explanation in terms of Lorentz body force is discussed rather than the pinch mechanism generally suggested in literature. The experimental investigation for the FXR generation is corroborated by measuring the radiation dose using CaSO{sub 4} (Dy) thermo luminescent dosimeters.

  10. A 3.55 keV line from DM ? a ? ?: predictions for cool-core and non-cool-core clusters

    SciTech Connect (OSTI)

    Conlon, Joseph P.; Powell, Andrew J., E-mail: j.conlon1@physics.ox.ac.uk, E-mail: andrew.powell2@physics.ox.ac.uk [Rudolf Peierls Centre for Theoretical Physics, University of Oxford, 1 Keble Road, Oxford, OX1 3NP (United Kingdom)

    2015-01-01

    We further study a scenario in which a 3.55 keV X-ray line arises from decay of dark matter to an axion-like particle (ALP), that subsequently converts to a photon in astrophysical magnetic fields. We perform numerical simulations of Gaussian random magnetic fields with radial scaling of the magnetic field magnitude with the electron density, for both cool-core 'Perseus' and non-cool-core 'Coma' electron density profiles. Using these, we quantitatively study the resulting signal strength and morphology for cool-core and non-cool-core clusters. Our study includes the effects of fields of view that cover only the central part of the cluster, the effects of offset pointings on the radial decline of signal strength and the effects of dividing clusters into annuli. We find good agreement with current data and make predictions for future analyses and observations.

  11. Dipolar dark matter in light of 3.5 keV X-ray Line, Neutrino mass and LUX data

    E-Print Network [OSTI]

    Patra, Sudhanwa; Sahu, Narendra

    2014-01-01

    A simple extension of the standard model (SM) providing transient magnetic moments to right-handed neutrinos is presented. In this model, the decay of next-to-lightest right-handed heavy neutrino to the lightest one and a photon (N 2 -> N 1 + gamma) can explain the 3.5 keV X-ray line signal observed by XMM-Newton X-ray observatory. Beside the SM particles and heavy right-handed Majorana neutrinos, the model contains a singly charged scalar (H) and an extra Higgs doublet (Sigma). Within this minimal set of extra fields the sub-eV masses of left-handed neutrinos are also explained. Moreover, we show that the spin-independent DM-nucleon cross-section is compatible with latest LUX data.

  12. First result of the experimental search for the 9.4 keV solar axion reactions with Kr-83 in the copper proportional counter

    E-Print Network [OSTI]

    Yu. M. Gavrilyuk; A. M. Gangapshev; A. V. Derbin; V. V. Kazalov; H. J. Kim; Y. D. Kim; V. V. Kobychev; V. V. Kuzminov; Luqman Ali; V. N. Muratova; S. I. Panasenko; S. S. Ratkevich; D. A. Semenov; D. A. Tekueva; S. P. Yakimenko; E. V. Unzhakov

    2014-05-06

    The experimental search for solar hadronic axions is started at the Baksan Neutrino Observatory of the Institute for Nuclear Researches Russian Academy of Science. It is assumed that axions are created in the Sun during M1-transition between the first thermally excited level at 9.4 keV and the ground state in Kr-83. The experiment is based on axion detection via resonant absorption process by the same nucleus in the detector. The big copper proportional counter filled with krypton is used to detect signals from axions. The experimental setup is situated in the deep underground low background laboratory. No evidence of axion detection were found after the 26.5 days data collection. Resulting new upper limit on axion mass is m_{A} < 130 eV at 95% C.L.

  13. ASCA Discovery of Diffuse 6.4 keV Emission Near the Sgr C Complex: A New X-ray Reflection Nebula

    E-Print Network [OSTI]

    H. Murakami; K. Koyama; M. Tsujimoto; Y. Maeda; M. Sakano

    2000-12-14

    We present an ASCA discovery of diffuse hard X-ray emission from the Sgr C complex with its peak in the vicinity of the molecular cloud core. The X-ray spectrum is characterized by a strong 6.4-keV line and large absorption. These properties suggest that Sgr C is a new X-ray reflection nebula which emits fluorescent and scattered X-rays via irradiation from an external X-ray source. We found no adequately bright source in the immediate Sgr C vicinity to fully account for the fluorescence. The irradiating source may be the Galactic nucleus Sgr A*, which was brighter in the past than it is now as is suggested from observations of the first X-ray reflection nebula Sgr B2.

  14. Range gated imaging experiments using gated intensifiers

    SciTech Connect (OSTI)

    McDonald, T.E. Jr.; Yates, G.J.; Cverna, F.H.; Gallegos, R.A.; Jaramillo, S.A.; Numkena, D.M.; Payton, J.; Pena-Abeyta, C.R.

    1999-03-01

    A variety of range gated imaging experiments using high-speed gated/shuttered proximity focused microchannel plate image intensifiers (MCPII) are reported. Range gated imaging experiments were conducted in water for detection of submerged mines in controlled turbidity tank test and in sea water for the Naval Coastal Sea Command/US Marine Corps. Field experiments have been conducted consisting of kilometer range imaging of resolution targets and military vehicles in atmosphere at Eglin Air Force Base for the US Air Force, and similar imaging experiments, but in smoke environment, at Redstone Arsenal for the US Army Aviation and Missile Command (AMCOM). Wavelength of the illuminating laser was 532 nm with pulse width ranging from 6 to 12 ns and comparable gate widths. These tests have shown depth resolution in the tens of centimeters range from time phasing reflected LADAR images with MCPII shutter opening.

  15. Effective range from tetramer dissociation data

    E-Print Network [OSTI]

    Hadizadeh, M R; Tomio, Lauro; Delfino, A; Frederico, T

    2012-01-01

    The shifts in the four-body recombination peaks, due to lowest order range corrections in the zero range results close to the unitary limit, are obtained and used to extract the corresponding effective range of a given atomic system. From the experimental values of the tetramer dissociation positions of an ultracold gas of cesium atoms close to broad Feshbach resonances, the effective ranges are extracted, with a weighted average given by 3.9$\\pm 0.8 R_{{vdW}}$, where $R_{{vdW}}$ is the van der Waals length scale. This result is consistent with the van der Waals potential tail for the $Cs_2$ system. The method can be generally applied to other cold atom experimental setups to determine the corresponding effective range.

  16. Neutron scattering and extra short range interactions

    E-Print Network [OSTI]

    V. V. Nesvizhevsky; G. Pignol; K. V. Protasov

    2007-11-14

    The available data on neutron scattering were analyzed to constrain a hypothetical new short-range interaction. We show that these constraints are several orders of magnitude better than those usually cited in the range between 1 pm and 5 nm. This distance range occupies an intermediate space between collider searches for strongly coupled heavy bosons and searches for new weak macroscopic forces. We emphasise the reliability of the neutron constraints in so far as they provide several independent strategies. We have identified the most promising way to improve them.

  17. Techniques for optically compressing light intensity ranges

    SciTech Connect (OSTI)

    Rushford, Michael C.

    1989-01-01

    A pin hole camera assembly for use in viewing an object having a relatively large light intensity range, for example a crucible containing molten uranium in an atomic vapor laser isotope separator (AVLIS) system is disclosed herein. The assembly includes means for optically compressing the light intensity range appearing at its input sufficient to make it receivable and decipherable by a standard video camera. A number of different means for compressing the intensity range are disclosed. These include the use of photogray glass, the use of a pair of interference filters, and the utilization of a new liquid crystal notch filter in combination with an interference filter.

  18. Techniques for optically compressing light intensity ranges

    DOE Patents [OSTI]

    Rushford, M.C.

    1989-03-28

    A pin hole camera assembly for use in viewing an object having a relatively large light intensity range, for example a crucible containing molten uranium in an atomic vapor laser isotope separator (AVLIS) system is disclosed herein. The assembly includes means for optically compressing the light intensity range appearing at its input sufficient to make it receivable and decipherable by a standard video camera. A number of different means for compressing the intensity range are disclosed. These include the use of photogray glass, the use of a pair of interference filters, and the utilization of a new liquid crystal notch filter in combination with an interference filter. 18 figs.

  19. Laser Range Finder Mapping of Floating Vehicle

    E-Print Network [OSTI]

    Hui, Corinna

    2009-01-01

    Using laser range finders as a method of navigation is popular with mobile land robots; however, there has been little research using it with water vehicles. Therefore, this thesis explores the usage and data flow of a ...

  20. Long range transport of acid rain precursors

    E-Print Network [OSTI]

    Fay, James A.

    1983-01-01

    A model of the long range transport of primary and secondary pollutants derived by Fay and Rosenzweig (1) is applied to the problem of the transport of acid rain precursors. The model describes the long term average (annual ...

  1. Tracking Dynamic Boundary Fronts Using Range Sensors

    E-Print Network [OSTI]

    Ramamritham, Krithi

    , tracking forest fires and environmental phenomena. Consider a poisonous gas or plume monitoring ap De- tection and Ranging) are being used for detecting forest fires [6], [7] in the last few years

  2. Systematic ranging and late warning asteroid impacts

    E-Print Network [OSTI]

    Farnocchia, D; Micheli, M

    2015-01-01

    We describe systematic ranging, an orbit determination technique especially suitable to assess the near-term Earth impact hazard posed by newly discovered asteroids. For these late warning cases, the time interval covered by the observations is generally short, perhaps a few hours or even less, which leads to severe degeneracies in the orbit estimation process. The systematic ranging approach gets around these degeneracies by performing a raster scan in the poorly-constrained space of topocentric range and range rate, while the plane of sky position and motion are directly tied to the recorded observations. This scan allows us to identify regions corresponding to collision solutions, as well as potential impact times and locations. From the probability distribution of the observation errors, we obtain a probability distribution in the orbital space and then estimate the probability of an Earth impact. We show how this technique is effective for a number of examples, including 2008 TC3 and 2014 AA, the only tw...

  3. Long range interactions in nanoscale science

    E-Print Network [OSTI]

    Rajter, Richard F.

    Our understanding of the “long range” electrodynamic, electrostatic, and polar interactions that dominate the organization of small objects at separations beyond an interatomic bond length is reviewed. From this basic-forces ...

  4. Underwater vehicle localization using range measurements

    E-Print Network [OSTI]

    Papadopoulos, Ge?rgios

    2010-01-01

    This thesis investigates the problem of cooperative navigation of autonomous marine vehicles using range-only acoustic measurements. We consider the use of a single maneuvering autonomous surface vehicle (ASV) to aid the ...

  5. Active dendrites enhance neuronal dynamic range

    E-Print Network [OSTI]

    Leonardo L. Gollo; Osame Kinouchi; Mauro Copelli

    2009-08-08

    Since the first experimental evidences of active conductances in dendrites, most neurons have been shown to exhibit dendritic excitability through the expression of a variety of voltage-gated ion channels. However, despite experimental and theoretical efforts undertaken in the last decades, the role of this excitability for some kind of dendritic computation has remained elusive. Here we show that, owing to very general properties of excitable media, the average output of a model of active dendritic trees is a highly non-linear function of their afferent rate, attaining extremely large dynamic ranges (above 50 dB). Moreover, the model yields double-sigmoid response functions as experimentally observed in retinal ganglion cells. We claim that enhancement of dynamic range is the primary functional role of active dendritic conductances. We predict that neurons with larger dendritic trees should have larger dynamic range and that blocking of active conductances should lead to a decrease of dynamic range.

  6. Programmable near-infrared ranging system

    DOE Patents [OSTI]

    Everett, Jr., Hobart R. (San Diego, CA)

    1989-01-01

    A high angular resolution ranging system particularly suitable for indoor plications involving mobile robot navigation and collision avoidance uses a programmable array of light emitters that can be sequentially incremented by a microprocessor. A plurality of adjustable level threshold detectors are used in an optical receiver for detecting the threshold level of the light echoes produced when light emitted from one or more of the emitters is reflected by a target or object in the scan path of the ranging system.

  7. Supersymmetric inversion of effective-range expansions

    E-Print Network [OSTI]

    Bikashkali Midya; Jérémie Evrard; Sylvain Abramowicz; O. L. Ramírez Suárez; Jean-Marc Sparenberg

    2015-05-26

    A complete and consistent inversion technique is proposed to derive an accurate interaction potential from an effective-range function for a given partial wave in the neutral case. First, the effective-range function is Taylor or Pad\\'e expanded, which allows high precision fitting of the experimental scattering phase shifts with a minimal number of parameters on a large energy range. Second, the corresponding poles of the scattering matrix are extracted in the complex wave-number plane. Third, the interaction potential is constructed with supersymmetric transformations of the radial Schr\\"odinger equation. As an illustration, the method is applied to the experimental phase shifts of the neutron-proton elastic scattering in the $^1S_0$ and $^1D_2$ channels on the $[0-350]$ MeV laboratory energy interval.

  8. Topological phases with long-range interactions

    E-Print Network [OSTI]

    Gong, Zhe-Xuan; Hu, Anzi; Wall, Michael L; Foss-Feig, Michael; Gorshkov, Alexey V

    2015-01-01

    Topological phases of matter are primarily studied in quantum many-body systems with short-range interactions. Whether various topological phases can survive in the presence of long-range interactions, however, is largely unknown. Here we show that a paradigmatic example of a symmetry-protected topological phase, the Haldane phase of an antiferromagnetic spin-1 chain, surprisingly remains intact in the presence of arbitrarily slowly decaying power-law interactions. The influence of long-range interactions on the topological order is largely quantitative, and we expect similar results for more general systems. Our conclusions are based on large-scale matrix-product-state simulations and two complementary effective-field-theory calculations. The striking agreement between the numerical and analytical results rules out finite-size effects. The topological phase considered here should be experimentally observable in a recently developed trapped-ion quantum simulator.

  9. Topological phases with long-range interactions

    E-Print Network [OSTI]

    Zhe-Xuan Gong; Mohammad F. Maghrebi; Anzi Hu; Michael L. Wall; Michael Foss-Feig; Alexey V. Gorshkov

    2015-05-12

    Topological phases of matter are primarily studied in quantum many-body systems with short-range interactions. Whether various topological phases can survive in the presence of long-range interactions, however, is largely unknown. Here we show that a paradigmatic example of a symmetry-protected topological phase, the Haldane phase of an antiferromagnetic spin-1 chain, surprisingly remains intact in the presence of arbitrarily slowly decaying power-law interactions. The influence of long-range interactions on the topological order is largely quantitative, and we expect similar results for more general systems. Our conclusions are based on large-scale matrix-product-state simulations and two complementary effective-field-theory calculations. The striking agreement between the numerical and analytical results rules out finite-size effects. The topological phase considered here should be experimentally observable in a recently developed trapped-ion quantum simulator.

  10. Extended range radiation dose-rate monitor

    DOE Patents [OSTI]

    Valentine, Kenneth H. (Knoxville, TN)

    1988-01-01

    An extended range dose-rate monitor is provided which utilizes the pulse pileup phenomenon that occurs in conventional counting systems to alter the dynamic response of the system to extend the dose-rate counting range. The current pulses from a solid-state detector generated by radiation events are amplified and shaped prior to applying the pulses to the input of a comparator. The comparator generates one logic pulse for each input pulse which exceeds the comparator reference threshold. These pulses are integrated and applied to a meter calibrated to indicate the measured dose-rate in response to the integrator output. A portion of the output signal from the integrator is fed back to vary the comparator reference threshold in proportion to the output count rate to extend the sensitive dynamic detection range by delaying the asymptotic approach of the integrator output toward full scale as measured by the meter.

  11. Safety assessment of outdoor live fire range

    SciTech Connect (OSTI)

    1989-05-01

    The following Safety Assessment (SA) pertains to the outdoor live fire range facility (LFR). The purpose of this facility is to supplement the indoor LFR. In particular it provides capacity for exercises that would be inappropriate on the indoor range. This SA examines the risks that are attendant to the training on the outdoor LFR. The outdoor LFR used by EG&G Mound is privately owned. It is identified as the Miami Valley Shooting Grounds. Mondays are leased for the exclusive use of EG&G Mound.

  12. Hidden axion dark matter decaying through mixing with QCD axion and the 3.5 keV X-ray line

    SciTech Connect (OSTI)

    Higaki, Tetsutaro [Theory Center, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801 (Japan); Kitajima, Naoya; Takahashi, Fuminobu, E-mail: thigaki@post.kek.jp, E-mail: kitajima@tuhep.phys.tohoku.ac.jp, E-mail: fumi@tuhep.phys.tohoku.ac.jp [Department of Physics, Tohoku University, Sendai 980-8578 (Japan)

    2014-12-01

    Hidden axions may be coupled to the standard model particles through a kinetic or mass mixing with QCD axion. We study a scenario in which a hidden axion constitutes a part of or the whole of dark matter and decays into photons through the mixing, explaining the 3.5 keV X-ray line signal. Interestingly, the required long lifetime of the hidden axion dark matter can be realized for the QCD axion decay constant at an intermediate scale, if the mixing is sufficiently small. In such a two component dark matter scenario, the primordial density perturbations of the hidden axion can be highly non-Gaussian, leading to a possible dispersion in the X-ray line strength from various galaxy clusters and near-by galaxies. We also discuss how the parallel and orthogonal alignment of two axions affects their couplings to gauge fields. In particular, the QCD axion decay constant can be much larger than the actual Peccei-Quinn symmetry breaking.

  13. International Fusion Materials Irradiation Facility injector acceptance tests at CEA/Saclay: 140 mA/100 keV deuteron beam characterization

    SciTech Connect (OSTI)

    Gobin, R., E-mail: rjgobin@cea.fr; Bogard, D.; Chauvin, N.; Chel, S.; Delferrière, O.; Harrault, F.; Mattei, P.; Senée, F. [Commissariat à l’Energie Atomique et aux Energies Alternatives, CEA/Saclay, DSM/IRFU, 91191-Gif/Yvette (France)] [Commissariat à l’Energie Atomique et aux Energies Alternatives, CEA/Saclay, DSM/IRFU, 91191-Gif/Yvette (France); Cara, P. [Fusion for Energy, BFD Department, Garching (Germany)] [Fusion for Energy, BFD Department, Garching (Germany); Mosnier, A. [Commissariat à l’Energie Atomique et aux Energies Alternatives, CEA/Saclay, DSM/IRFU, 91191-Gif/Yvette (France) [Commissariat à l’Energie Atomique et aux Energies Alternatives, CEA/Saclay, DSM/IRFU, 91191-Gif/Yvette (France); Fusion for Energy, BFD Department, Garching (Germany); Shidara, H. [IFMIF/EVEDA Project Team, Obuchi-Omotedate 2-166, Rokkasho, Aomori (Japan)] [IFMIF/EVEDA Project Team, Obuchi-Omotedate 2-166, Rokkasho, Aomori (Japan); Okumura, Y. [JAEA, Division of Rokkasho BA Project, Obuchi-Omotedate 2-166, Rokkasho, Aomori (Japan)] [JAEA, Division of Rokkasho BA Project, Obuchi-Omotedate 2-166, Rokkasho, Aomori (Japan)

    2014-02-15

    In the framework of the ITER broader approach, the International Fusion Materials Irradiation Facility (IFMIF) deuteron accelerator (2 × 125 mA at 40 MeV) is an irradiation tool dedicated to high neutron flux production for future nuclear plant material studies. During the validation phase, the Linear IFMIF Prototype Accelerator (LIPAc) machine will be tested on the Rokkasho site in Japan. This demonstrator aims to produce 125 mA/9 MeV deuteron beam. Involved in the LIPAc project for several years, specialists from CEA/Saclay designed the injector based on a SILHI type ECR source operating at 2.45 GHz and a 2 solenoid low energy beam line to produce such high intensity beam. The whole injector, equipped with its dedicated diagnostics, has been then installed and tested on the Saclay site. Before shipment from Europe to Japan, acceptance tests have been performed in November 2012 with 100 keV deuteron beam and intensity as high as 140 mA in continuous and pulsed mode. In this paper, the emittance measurements done for different duty cycles and different beam intensities will be presented as well as beam species fraction analysis. Then the reinstallation in Japan and commissioning plan on site will be reported.

  14. Range gating experiments through a scattering media

    SciTech Connect (OSTI)

    Payton, J.; Cverna, F.; Gallegos, R.; McDonald, T.; Numkena, D.; Obst, A.; Pena-Abeyta, C.; Yates, G.

    1998-12-31

    This paper discusses range-gated imaging experiments performed recently at Redstone Arsenal in Huntsville, Alabama. Range gating is an imaging technique that uses a pulsed laser and gated camera to image objects at specific ranges. The technique can be used for imaging through scattering media such as dense smoke or fog. Range gating uses the fact that light travels at 3 x 10{sup 8} m/s. Knowing the speed of light the authors can calculate the time it will take the laser light to travel a known distance, then gate open a Micro Channel Plate Image Intensifier (MCPII) at the time the reflected light returns from the target. In the Redstone experiment the gate width on the MCPII was set to equal the laser pulse width ({approximately} 8 ns) for the highest signal to noise ratio. The gate allows the light reflected form the target and a small portion of the light reflected from the smoke in the vicinity of the target to be imaged. They obtained good results in light and medium smoke but the laser they were used did not have sufficient intensity to penetrate the thickest smoke. They did not diverge the laser beam to cover the entire target in order to maintain a high flux that would achieve better penetration through the smoke. They were able to image an Armored Personnel Carrier (APC) through light and medium smoke but they were not able to image the APC through heavy smoke. The experiment and results are presented.

  15. Impulse radar with swept range gate

    DOE Patents [OSTI]

    McEwan, T.E.

    1998-09-08

    A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with a typical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Techniques are used to reduce clutter in the receive signal, such as decoupling the receive and transmit cavities by placing a space between them, using conductive or radiative damping elements on the cavities, and using terminating plates on the sides of the openings. The antennas can be arranged in a side-by-side parallel spaced apart configuration or in a coplanar opposed configuration which significantly reduces main bang coupling. 25 figs.

  16. 6, 1018310216, 2006 Long-range transport

    E-Print Network [OSTI]

    Boyer, Edmond

    ACPD 6, 10183­10216, 2006 Long-range transport of Asian dust and air pollutants to Taiwan C.-Y. Lin and air pollutants to Taiwan: observed evidence and model simulation C.-Y. Lin 1 , Z. Wang 2 , W.-N. Chen and air pollutants to Taiwan C.-Y. Lin et al. Title Page Abstract Introduction Conclusions References

  17. Compact range for variable-zone measurements

    DOE Patents [OSTI]

    Burnside, Walter D. (Columbus, OH); Rudduck, Roger C. (Columbus, OH); Yu, Jiunn S. (Albuquerque, NM)

    1988-01-01

    A compact range for testing antennas or radar targets includes a source for directing energy along a feedline toward a parabolic reflector. The reflected wave is a spherical wave with a radius dependent on the distance of the source from the focal point of the reflector.

  18. Discussion of long-range weather prediction

    SciTech Connect (OSTI)

    Canavan, G.H.

    1998-09-10

    A group of scientists at Los Alamos have held a series of discussions of the issues in and prospects for improvements in Long-range Weather Predictions Enabled by Proving of the Atmosphere at High Space-Time Resolution. The group contained the requisite skills for a full evaluation, although this report presents only an informal discussion of the main technical issues. The group discussed all aspects of the proposal, which are grouped below into the headings: (1) predictability; (2) sensors and satellites, (3) DIAL and atmospheric sensing; (4) localized transponders; and (5) summary and integration. Briefly, the group agreed that the relative paucity of observations of the state of the atmosphere severely inhibits the accuracy of weather forecasts, and any program that leads to a more dense and uniform observational network is welcome. As shown in Long-range Weather more dense and uniform observational network is welcome. As shown in Long-range Weather Predictions, the pay-back of accurate long-range forecasts should more than justify the expenditure associated with improved observations and forecast models required. The essential step is to show that the needed technologies are available for field test and space qualification.

  19. Method and apparatus for coherent burst ranging

    DOE Patents [OSTI]

    Wachter, E.A.; Fisher, W.G.

    1998-04-28

    A high resolution ranging method is described utilizing a novel modulated waveform, hereafter referred to as coherent burst modulation. In the coherent burst method, high frequency modulation of an acoustic or electromagnetic transmitter, such as a laser, is performed at a modulation frequency. This modulation frequency is transmitted quasi-continuously in the form of interrupted bursts of radiation. Energy from the transmitter is directed onto a target, interacts with the target, and the returning energy is collected. The encoded burst pattern contained in the collected return signal is detected coherently by a receiver that is tuned so as to be principally sensitive to the modulation frequency. The receiver signal is processed to determine target range using both time-of-flight of the burst envelope and phase shift of the high frequency modulation. This approach effectively decouples the maximum unambiguous range and range resolution relationship of earlier methods, thereby allowing high precision ranging to be conducted at arbitrarily long distances using at least one burst of encoded energy. The use of a receiver tuned to the high frequency modulation contained within the coherent burst vastly improves both sensitivity in the detection of the target return signal and rejection of background interferences, such as ambient acoustic or electromagnetic noise. Simultaneous transmission at several energies (or wavelengths) is possible by encoding each energy with a separate modulation frequency or pattern; electronic demodulation at the receiver allows the return pattern for each energy to be monitored independently. Radial velocity of a target can also be determined by monitoring change in phase shift of the return signal as a function of time. 12 figs.

  20. Method and apparatus for coherent burst ranging

    DOE Patents [OSTI]

    Wachter, Eric A. (138 Bay Path Dr., Oak Ridge, TN 37830); Fisher, Walter G. (8514 Carl Valentine, Knoxville, TN 37931)

    1998-01-01

    A high resolution ranging method is described utilizing a novel modulated waveform, hereafter referred to as coherent burst modulation. In the coherent burst method, high frequency modulation of an acoustic or electromagnetic transmitter, such as a laser, is performed at a modulation frequency. This modulation frequency is transmitted quasi-continuously in the form of interrupted bursts of radiation. Energy from the transmitter is directed onto a target, interacts with the target, and the returning energy is collected. The encoded burst pattern contained in the collected return signal is detected coherently by a receiver that is tuned so as to be principally sensitive to the modulation frequency. The receiver signal is processed to determine target range using both time-of-flight of the burst envelope and phase shift of the high frequency modulation. This approach effectively decouples the maximum unambiguous range and range resolution relationship of earlier methods, thereby allowing high precision ranging to be conducted at arbitrarily long distances using at least one burst of encoded energy. The use of a receiver tuned to the high frequency modulation contained within the coherent burst vastly improves both sensitivity in the detection of the target return signal and rejection of background interferences, such as ambient acoustic or electromagnetic noise. Simultaneous transmission at several energies (or wavelengths) is possible by encoding each energy with a separate modulation frequency or pattern; electronic demodulation at the receiver allows the return pattern for each energy to be monitored independently. Radial velocity of a target can also be determined by monitoring change in phase shift of the return signal as a function of time.

  1. Wide range radioactive gas concentration detector

    DOE Patents [OSTI]

    Anderson, David F. (Los Alamos, NM)

    1984-01-01

    A wide range radioactive gas concentration detector and monitor which is capable of measuring radioactive gas concentrations over a range of eight orders of magnitude. The device of the present invention is designed to have an ionization chamber which is sufficiently small to give a fast response time for measuring radioactive gases but sufficiently large to provide accurate readings at low concentration levels. Closely spaced parallel plate grids provide a uniform electric field in the active region to improve the accuracy of measurements and reduce ion migration time so as to virtually eliminate errors due to ion recombination. The parallel plate grids are fabricated with a minimal surface area to reduce the effects of contamination resulting from absorption of contaminating materials on the surface of the grids. Additionally, the ionization chamber wall is spaced a sufficient distance from the active region of the ionization chamber to minimize contamination effects.

  2. Rangely, Colorado: Energy Resources | 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 onRAPID/Geothermal/Exploration/Colorado <RAPID/Geothermal/WaterEnergy Marketing CorpMember Corp JumpRangely, Colorado:

  3. Inertial range turbulence in kinetic plasmas

    E-Print Network [OSTI]

    Howes, G G

    2007-01-01

    The transfer of turbulent energy through an inertial range from the driving scale to dissipative scales in a kinetic plasma followed by the conversion of this energy into heat is a fundamental plasma physics process. A theoretical foundation for the study of this process is constructed, but the details of the kinetic cascade are not well understood. Several important properties are identified: (a) the conservation of a generalized energy by the cascade; (b) the need for collisions to increase entropy and realize irreversible plasma heating; and (c) the key role played by the entropy cascade--a dual cascade of energy to small scales in both physical and velocity space--to convert ultimately the turbulent energy into heat. A strategy for nonlinear numerical simulations of kinetic turbulence is outlined. Initial numerical results are consistent with the operation of the entropy cascade. Inertial range turbulence arises in a broad range of space and astrophysical plasmas and may play an important role in the ther...

  4. Inertial range turbulence in kinetic plasmas

    E-Print Network [OSTI]

    G. G. Howes

    2007-11-27

    The transfer of turbulent energy through an inertial range from the driving scale to dissipative scales in a kinetic plasma followed by the conversion of this energy into heat is a fundamental plasma physics process. A theoretical foundation for the study of this process is constructed, but the details of the kinetic cascade are not well understood. Several important properties are identified: (a) the conservation of a generalized energy by the cascade; (b) the need for collisions to increase entropy and realize irreversible plasma heating; and (c) the key role played by the entropy cascade--a dual cascade of energy to small scales in both physical and velocity space--to convert ultimately the turbulent energy into heat. A strategy for nonlinear numerical simulations of kinetic turbulence is outlined. Initial numerical results are consistent with the operation of the entropy cascade. Inertial range turbulence arises in a broad range of space and astrophysical plasmas and may play an important role in the thermalization of fusion energy in burning plasmas.

  5. Population genetic analysis of a recent range expansion: mechanisms regulating the poleward range limit

    E-Print Network [OSTI]

    Grosberg, Rick

    with the range limit. We infer that the primary cause of the northern range boundary in T. rubescens is migration mechanisms--genetic impoverishment, migration load, or a physical barrier to dis- persal--are well described similarly affect all taxa in a region whose distributional limits are established by migration load

  6. Multichannel long-range Rydberg molecules

    E-Print Network [OSTI]

    Eiles, Matthew T

    2015-01-01

    A generalized class of ultra-long-range Rydberg molecules is proposed which consist of a multichannel Rydberg atom whose outermost electron creates a chemical bond with a distant ground state atom. Such multichannel Rydberg molecules exhibit favorable properties for laser excitation, because states exist where the quantum defect varies strongly with the principal quantum number. The resulting occurrence of near degeneracies with states of high orbital angular momentum promotes the admixture of low $l$ into the high $l$ deeply bound `trilobite' molecule states, thereby circumventing the usual difficulty posed by electric dipole selection rules. Such states also can exhibit multi-scale binding possibilities that could present novel options for quantum manipulation.

  7. Tonopah Test Range 2030 Meeting Summary Report

    SciTech Connect (OSTI)

    NSTec Environmental Restoration

    2009-04-01

    Corrective Action Sites (CASs) and Corrective Action Units (CAUs) at the Tonopah Test Range (TTR) may be placed into three categories: Closed, Closed in Place, or Closure in Progress. CASs and CAUs where contaminants were either not detected or were cleaned up to within regulatory action levels are summarized. CASs and CAUs where contaminants and/or waste have been closed in place are summarized. There is also a table that summarizes the contaminant that has been closed at each site, if land-use restrictions are present, and if post-closure inspections are required.

  8. Fan-less long range alpha detector

    DOE Patents [OSTI]

    MacArthur, D.W.; Bounds, J.A.

    1994-05-10

    A fan-less long range alpha detector is disclosed which operates by using an electrical field between a signal plane and the surface or substance to be monitored for air ions created by collisions with alpha radiation. Without a fan, the detector can operate without the possibility of spreading dust and potential contamination into the atmosphere. A guard plane between the signal plane and the electrically conductive enclosure and maintained at the same voltage as the signal plane, reduces leakage currents. The detector can easily monitor soil, or other solid or liquid surfaces. 2 figures.

  9. Rangely Oilfield Geothermal Area | 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 QA:QA J-E-1 SECTION J APPENDIX ECoop Inc Jump to:Newberg,Energy LLCALLETEREFU Elektronik GmbHRahusRamkyRange Fuels

  10. Help:Range blocks | 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 QA:QA J-E-1 SECTION J APPENDIX E LISTStar2-0057-EA JumpDuimen River PowerHeckert BXT SolarHelioNova S LLinkedRange

  11. Range Fuels Biorefinery Groundbreaking | Department of Energy

    Energy Savers [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 DeliciousMathematicsEnergyInterested PartiesBuildingBudget ||Department ofRequest7of 9 RadiologicalRainRancherRange

  12. Short range, ultra-wideband radar with high resolution swept range gate

    DOE Patents [OSTI]

    McEwan, T.E.

    1998-05-26

    A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with a typical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Uses of the invention include a replacement of ultrasound devices for fluid level sensing, automotive radar, such as cruise control and parking assistance, hidden object location, such as stud and rebar finding. Also, this technology can be used when positioned over a highway lane to collect vehicle count and speed data for traffic control. 14 figs.

  13. Short range, ultra-wideband radar with high resolution swept range gate

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1998-05-26

    A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with a typical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Uses of the invention include a replacement of ultrasound devices for fluid level sensing, automotive radar, such as cruise control and parking assistance, hidden object location, such as stud and rebar finding. Also, this technology can be used when positioned over a highway lane to collect vehicle count and speed data for traffic control.

  14. Scannerless loss modulated flash color range imaging

    DOE Patents [OSTI]

    Sandusky, John V. (Albuquerque, NM); Pitts, Todd Alan (Rio Rancho, NM)

    2008-09-02

    Scannerless loss modulated flash color range imaging methods and apparatus are disclosed for producing three dimensional (3D) images of a target within a scene. Apparatus and methods according to the present invention comprise a light source providing at least three wavelengths (passbands) of illumination that are each loss modulated, phase delayed and simultaneously directed to illuminate the target. Phase delayed light backscattered from the target is spectrally filtered, demodulated and imaged by a planar detector array. Images of the intensity distributions for the selected wavelengths are obtained under modulated and unmodulated (dc) illumination of the target, and the information contained in the images combined to produce a 3D image of the target.

  15. Scannerless loss modulated flash color range imaging

    DOE Patents [OSTI]

    Sandusky, John V. (Albuquerque, NM); Pitts, Todd Alan (Rio Rancho, NM)

    2009-02-24

    Scannerless loss modulated flash color range imaging methods and apparatus are disclosed for producing three dimensional (3D) images of a target within a scene. Apparatus and methods according to the present invention comprise a light source providing at least three wavelengths (passbands) of illumination that are each loss modulated, phase delayed and simultaneously directed to illuminate the target. Phase delayed light backscattered from the target is spectrally filtered, demodulated and imaged by a planar detector array. Images of the intensity distributions for the selected wavelengths are obtained under modulated and unmodulated (dc) illumination of the target, and the information contained in the images combined to produce a 3D image of the target.

  16. Ultrasonic ranging and data telemetry system

    DOE Patents [OSTI]

    Brashear, Hugh R. (Farragut, TN); Blair, Michael S. (Knoxville, TN); Phelps, James E. (Knoxville, TN); Bauer, Martin L. (Oak Ridge, TN); Nowlin, Charles H. (Oak Ridge, TN)

    1990-01-01

    An ultrasonic ranging and data telemetry system determines a surveyor's position and automatically links it with other simultaneously taken survey data. An ultrasonic and radio frequency (rf) transmitter are carried by the surveyor in a backpack. The surveyor's position is determined by calculations that use the measured transmission times of an airborne ultrasonic pulse transmitted from the backpack to two or more prepositioned ultrasonic transceivers. Once a second, rf communications are used both to synchronize the ultrasonic pulse transmission-time measurements and to transmit other simultaneously taken survey data. The rf communications are interpreted by a portable receiver and microcomputer which are brought to the property site. A video display attached to the computer provides real-time visual monitoring of the survey progress and site coverage.

  17. Ultra High Mass Range Mass Spectrometer System

    DOE Patents [OSTI]

    Reilly, Peter T. A. [Knoxville, TN

    2005-12-06

    Applicant's present invention comprises mass spectrometer systems that operate in a mass range from 1 to 10.sup.16 DA. The mass spectrometer system comprising an inlet system comprising an aerodynamic lens system, a reverse jet being a gas flux generated in an annulus moving in a reverse direction and a multipole ion guide; a digital ion trap; and a thermal vaporization/ionization detector system. Applicant's present invention further comprises a quadrupole mass spectrometer system comprising an inlet system having a quadrupole mass filter and a thermal vaporization/ionization detector system. Applicant's present invention further comprises an inlet system for use with a mass spectrometer system, a method for slowing energetic particles using an inlet system. Applicant's present invention also comprises a detector device and a method for detecting high mass charged particles.

  18. Range corrections in Proton Halo Nuclei

    E-Print Network [OSTI]

    Ryberg, Emil; Hammer, H -W; Platter, Lucas

    2015-01-01

    We analyze the effects of finite-range corrections in halo effective field theory for S-wave proton halo nuclei. We calculate the charge radius to next-to-leading order and the astrophysical S-factor for low-energy proton capture to fifth order in the low-energy expansion. As an application, we confront our results with experimental data for the S-factor for proton capture on Oxygen-16 into the excited $1/2^+$ state of Fluorine-17. Our low-energy theory is characterized by a systematic low-energy expansion, which can be used to quantify an energy-dependent model error to be utilized in data fitting. Finally, we show that the existence of proton halos is suppressed by the need for two fine tunings in the underlying theory.

  19. Fe-based long range ordered alloys

    DOE Patents [OSTI]

    Liu, Chain T (Oak Ridge, TN); Inouye, Henry (Oak Ridge, TN); Schaffhauser, Anthony C. (Oak Ridge, TN)

    1980-01-01

    Malleable long range ordered alloys having high critical ordering temperatures exist in the V(Co,Fe).sub.3 and V(Co,Fe,Ni).sub.3 system having the composition comprising by weight 22-23% V, 35-50% Fe, 0-22% Co and 19-40% Ni with an electron density no greater than 8.00. Excellent high temperature properties occur in alloys having compositions comprising by weight 22-23% V, 35-45% Fe, 0-10% Co, 25-35% Ni; 22-23% V, 28-33% Ni and the remainder Fe; and 22-23% V, 19-22% Ni, 19-22% Co and the remainder Fe. The alloys are fabricable by casting, deforming and annealing for sufficient time to provide ordered structure.

  20. IonCCD™ for direct position-sensitive charged-particle detection: from electrons and keV ions to hyperthermal biomolecular ions

    SciTech Connect (OSTI)

    Hadjar, Omar; Johnson, Grant E.; Laskin, Julia; Kibelka, Gottfried; Shill, Scott M.; Kuhn, Ken; Cameron, Chad; Kassan, Scott

    2011-04-01

    A novel charged-particle sensitive, pixel based detector array is described and its usage is demonstrated for a variety of applications, from detection of elemental particles (electrons) to hyper-thermal large biomolecular positive and negative ions including keV light atomic and molecular ions. The array detector is a modified light-sensitive charged coupled device (CCD). The IonCCDTM was engineered for direct charged particle detection by replacing the semi-conductor part of the CCD pixel by a conductor1. In contrast with the CCD, where the semi-conductive pixel is responsible for electron-hole pair formation upon photon bombardment, the IonCCD uses a capacitor coupled to the conductive electrode for direct charge integration. The detector can be operated from atmospheric pressure to high vacuum since no high voltages are needed. The IonCCD, presented in this work is an array of 2126 active pixels with 21 um pixel width and 3 um pixel gap. The detection area is 1.5x51mm2 where 1.5 mm and 51 mm are pixel and detector array length, respectively. The result is a one-dimensional position-sensitive detector with 24 um spatial resolution and 88 % pixel area ratio (PAR). In this work we demonstrate the capabilities and the performance of the detector. For the first time we show the direct detection of 250 eV electrons providing linearity response and detection efficiency of the IonCCD as function of electron beam current. Using positive ions from and electron impact source (E-I), we demonstrate that the detection efficiency of the IonCCD is virtually independent of particle energy [250 eV, 1250 eV], particle impact angle [45o, 90o] and particle flux. By combining the IonCCD with a double focusing sector field of Mattauch-Herzog geometry (M-H), we demonstrate fast acquisition of mass spectra in direct air sniffing mode. A first step towards fast in vivo breath analysis is presented. Detection of hyper-thermal biomolecular ions produced using an electrospray ionization source (ESI) is presented. The IonCCD was used as beam profiler to characterize the beam shape and intensity of 15 eV protonated and deprotonated biomolecular ions at the exit of an RF only collisional quadrupole. We present simultaneous detection of 140 eV doubly protonated biomolecular ions when the IonCCD is combined with the M-H analyzer. The latter, demonstrates the possibility of simultaneous separation and micro-array deposition of biological material using a miniature sector field.

  1. Range Sustainability (VSP) PNWD-SA-7032 1

    E-Print Network [OSTI]

    Range Sustainability (VSP) PNWD-SA-7032 1 PNWD-SA-7032 Range Sustainability Module Using Visual Sample Plan (VSP) Software Range Sustainability ModuleRange Sustainability Module Using Visual Sample Sustainability (VSP) PNWD-SA-7032 2 PNWD-SA-7032 / 2 ObjectiveObjectiveObjective Learn how to use the Range

  2. Long range optical phonons in liquid water

    E-Print Network [OSTI]

    Elton, Daniel C

    2015-01-01

    In this work we show that on subpicosecond time scales optical phonon modes can propagate through the H-bond network of water over relatively long distances (2-4 nm). Using molecular dynamics simulation we find propagating optical phonons in the librational and OH stretching bands. The OH stretching phonon only appears when a polarizable model (TTM3-F) is employed. Both of these phonon modes exhibit LO-TO splitting at $k = 0$, indicating long range dipole-dipole interactions in the system. We study the LO-TO splitting as a function of temperature, finding that the splitting increases for the librational mode at higher temperatures but decreases for the stretching mode. Since LO-TO splitting is intimately connected to structure, this analysis opens the door for new insights into how the local structure of water changes with temperature. Our results also explain a previously unnoticed discrepancy one encounters when comparing the librational peaks found in Raman and IR/dielectric spectra. Previously the three R...

  3. Cluster formation in fluids with competing short-range and long-range interactions

    SciTech Connect (OSTI)

    Sweatman, Martin B., E-mail: martin.sweatman@ed.ac.uk; Fartaria, Rui [Institute of Materials and Processes, School of Engineering, University of Edinburgh, Edinburgh EH9 3JL (United Kingdom)] [Institute of Materials and Processes, School of Engineering, University of Edinburgh, Edinburgh EH9 3JL (United Kingdom); Lue, Leo [Department of Chemical and Process Engineering, University of Strathclyde, Glasgow G1 1XJ (United Kingdom)] [Department of Chemical and Process Engineering, University of Strathclyde, Glasgow G1 1XJ (United Kingdom)

    2014-03-28

    We investigate the low density behaviour of fluids that interact through a short-ranged attraction together with a long-ranged repulsion (SALR potential) by developing a molecular thermodynamic model. The SALR potential is a model of effective solute interactions where the solvent degrees of freedom are integrated-out. For this system, we find that clusters form for a range of interaction parameters where attractive and repulsive interactions nearly balance, similar to micelle formation in aqueous surfactant solutions. We focus on systems for which equilibrium behaviour and liquid-like clusters (i.e., droplets) are expected, and find in addition a novel coexistence between a low density cluster phase and a high density cluster phase within a very narrow range of parameters. Moreover, a simple formula for the average cluster size is developed. Based on this formula, we propose a non-classical crystal nucleation pathway whereby macroscopic crystals are formed via crystal nucleation within microscopic precursor droplets. We also perform large-scale Monte Carlo simulations, which demonstrate that the cluster fluid phase is thermodynamically stable for this system.

  4. Compound and Elemental Analysis At Northern Basin & Range Region...

    Open Energy Info (EERE)

    Compound and Elemental Analysis At Northern Basin & Range Region (Laney, 2005) Exploration Activity Details Location Northern Basin and Range Geothermal Region Exploration...

  5. Development of a Thermal Enhancer ? for Combined Partial Range...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Thermal Enhancer for Combined Partial Range Burning and Hydrocarbon Dosing Development of a Thermal Enhancer for Combined Partial Range Burning and Hydrocarbon Dosing Poster...

  6. Indonesia-Bringing a Range of Supported Mitigation Activities...

    Open Energy Info (EERE)

    Indonesia-Bringing a Range of Supported Mitigation Activities in Selected Countries to the Next Level Jump to: navigation, search Name Indonesia-Bringing a Range of Supported...

  7. Analyses Guided Optimization of Wide Range and High Efficiency...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Analyses Guided Optimization of Wide Range and High Efficiency Turbocharger Compressor Analyses Guided Optimization of Wide Range and High Efficiency Turbocharger Compressor...

  8. POLYGENETIC TOPOGRAPHY OF THE CASCADE RANGE, WASHINGTON STATE, USA

    E-Print Network [OSTI]

    Montgomery, David R.

    POLYGENETIC TOPOGRAPHY OF THE CASCADE RANGE, WASHINGTON STATE, USA SARA GRAN MITCHELL Range of Washington State by analyzing the topography, geology, and exhumation patterns across the range-relief topography, 2) post-Miocene surface uplift of the range superimposed on pre-existing high-relief topography

  9. Range-gated field disturbance sensor with range-sensitivity compensation

    DOE Patents [OSTI]

    McEwan, T.E.

    1996-05-28

    A field disturbance sensor operates with relatively low power, provides an adjustable operating range, is not hypersensitive at close range, allows co-location of multiple sensors, and is inexpensive to manufacture. The sensor includes a transmitter that transmits a sequence of transmitted bursts of electromagnetic energy. The transmitter frequency is modulated at an intermediate frequency. The sequence of bursts has a burst repetition rate, and each burst has a burst width and comprises a number of cycles at a transmitter frequency. The sensor includes a receiver which receives electromagnetic energy at the transmitter frequency, and includes a mixer which mixes a transmitted burst with reflections of the same transmitted burst to produce an intermediate frequency signal. Circuitry, responsive to the intermediate frequency signal indicates disturbances in the sensor field. Because the mixer mixes the transmitted burst with reflections of the transmitted burst, the burst width defines the sensor range. The burst repetition rate is randomly or pseudorandomly modulated so that bursts in the sequence of bursts have a phase which varies. 8 figs.

  10. Range-gated field disturbance sensor with range-sensitivity compensation

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1996-01-01

    A field disturbance sensor operates with relatively low power, provides an adjustable operating range, is not hypersensitive at close range, allows co-location of multiple sensors, and is inexpensive to manufacture. The sensor includes a transmitter that transmits a sequence of transmitted bursts of electromagnetic energy. The transmitter frequency is modulated at an intermediate frequency. The sequence of bursts has a burst repetition rate, and each burst has a burst width and comprises a number of cycles at a transmitter frequency. The sensor includes a receiver which receives electromagnetic energy at the transmitter frequency, and includes a mixer which mixes a transmitted burst with reflections of the same transmitted burst to produce an intermediate frequency signal. Circuitry, responsive to the intermediate frequency signal indicates disturbances in the sensor field. Because the mixer mixes the transmitted burst with reflections of the transmitted burst, the burst width defines the sensor range. The burst repetition rate is randomly or pseudorandomly modulated so that bursts in the sequence of bursts have a phase which varies.

  11. Wide tracking range, auto ranging, low jitter phase lock loop for swept and fixed frequency systems

    DOE Patents [OSTI]

    Kerner, Thomas M. (Manorville, NY)

    2001-01-01

    The present invention provides a wide tracking range phase locked loop (PLL) circuit that achieves minimal jitter in a recovered clock signal, regardless of the source of the jitter (i.e. whether it is in the source or the transmission media). The present invention PLL has automatic harmonic lockout detection circuitry via a novel lock and seek control logic in electrical communication with a programmable frequency discriminator and a code balance detector. (The frequency discriminator enables preset of a frequency window of upper and lower frequency limits to derive a programmable range within which signal acquisition is effected. The discriminator works in combination with the code balance detector circuit to minimize the sensitivity of the PLL circuit to random data in the data stream). In addition, the combination of a differential loop integrator with the lock and seek control logic obviates a code preamble and guarantees signal acquisition without harmonic lockup. An adaptive cable equalizer is desirably used in combination with the present invention PLL to recover encoded transmissions containing a clock and/or data. The equalizer automatically adapts to equalize short haul cable lengths of coaxial and twisted pair cables or wires and provides superior jitter performance itself. The combination of the equalizer with the present invention PLL is desirable in that such combination permits the use of short haul wires without significant jitter.

  12. Dose distribution in water for monoenergetic photon point sources in the energy range of interest in brachytherapy: Monte Carlo simulations with PENELOPE and GEANT4

    E-Print Network [OSTI]

    Almansa, J F; Anguiano, M; Guerrero, R; Lallena, A M; Al-Dweri, Feras M.O.; Almansa, Julio F.; Guerrero, Rafael

    2006-01-01

    Monte Carlo calculations using the codes PENELOPE and GEANT4 have been performed to characterize the dosimetric properties of monoenergetic photon point sources in water. The dose rate in water has been calculated for energies of interest in brachytherapy, ranging between 10 keV and 2 MeV. A comparison of the results obtained using the two codes with the available data calculated with other Monte Carlo codes is carried out. A chi2-like statistical test is proposed for these comparisons. PENELOPE and GEANT4 show a reasonable agreement for all energies analyzed and distances to the source larger than 1 cm. Significant differences are found at distances from the source up to 1 cm. A similar situation occurs between PENELOPE and EGS4.

  13. Tonopah test range - outpost of Sandia National Laboratories

    SciTech Connect (OSTI)

    Johnson, L.

    1996-03-01

    Tonopah Test Range is a unique historic site. Established in 1957 by Sandia Corporation, Tonopah Test Range in Nevada provided an isolated place for the Atomic Energy Commission to test ballistics and non-nuclear features of atomic weapons. It served this and allied purposes well for nearly forty years, contributing immeasurably to a peaceful conclusion to the long arms race remembered as the Cold War. This report is a brief review of historical highlights at Tonopah Test Range. Sandia`s Los Lunas, Salton Sea, Kauai, and Edgewood testing ranges also receive abridged mention. Although Sandia`s test ranges are the subject, the central focus is on the people who managed and operated the range. Comments from historical figures are interspersed through the narrative to establish this perspective, and at the end a few observations concerning the range`s future are provided.

  14. Stellar 30-keV neutron capture in 94,96Zr and the 90Zr(gamma,n)89Zr photonuclear reaction with a high-power liquid-lithium target

    E-Print Network [OSTI]

    Tessler, M; Arenshtam, A; Feinberg, G; Friedman, M; Halfon, S; Kijel, D; Weissman, L; Aviv, O; Berkovits, D; Eisen, Y; Eliyahu, I; Haquin, G; Kreisel, A; Mardor, I; Shimel, G; Shor, A; Silverman, I; Yungrais, Z

    2015-01-01

    A high-power Liquid-Lithium Target (LiLiT) was used for the first time for neutron production via the thick-target 7Li(p,n)7Be reaction and quantitative determination of neutron capture cross sections. Bombarded with a 1-2 mA proton beam at 1.92 MeV from the Soreq Applied Research Accelerator Facility (SARAF), the setup yields a 30-keV quasi-Maxwellian neutron spectrum with an intensity of 3-5e10 n/s, more than one order of magnitude larger than present near-threshold 7Li(p,n) neutron sources. The setup was used here to determine the 30-keV Maxwellian averaged cross section (MACS) of 94Zr and 96Zr as 28.0+-0.6 mb and 12.4+-0.5 mb respectively, based on activation measurements. The precision of the cross section determinations results both from the high neutron yield and from detailed simulations of the entire experimental setup. We plan to extend our experimental studies to low-abundance and radioactive targets. In addition, we show here that the setup yields intense high-energy (17.6 and 14.6 MeV) prompt cap...

  15. Geographic Information System At Northern Basin & Range Region...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geographic Information System At Northern Basin & Range Region (Blewitt, Et Al., 2003) Exploration...

  16. Range Sustainability (VSP) PNWD-SA-7032 25

    E-Print Network [OSTI]

    Range Sustainability (VSP) PNWD-SA-7032 25 PNWD-SA-7032 / 25 Sampling Goals Establish Boundary of Contamination Partial Boundary #12;Range Sustainability (VSP) PNWD-SA-7032 26 PNWD-SA-7032 / 26 Required Samples #12;Range Sustainability (VSP) PNWD-SA-7032 27 PNWD-SA-7032 / 27 Specify Constituents of Concern

  17. Range Sustainability (VSP) PNWD-SA-7032 41

    E-Print Network [OSTI]

    Range Sustainability (VSP) PNWD-SA-7032 41 PNWD-SA-7032 / 41 Assumptions Underlying the UCLs. #12;Range Sustainability (VSP) PNWD-SA-7032 42 PNWD-SA-7032 / 42 Hypothetical Case Study that the action limit for the RDX mean (4.4 ppm) is not exceeded. #12;Range Sustainability (VSP) PNWD-SA-7032 43

  18. Range Sustainability (VSP) PNWD-SA-7032 57

    E-Print Network [OSTI]

    Range Sustainability (VSP) PNWD-SA-7032 57 PNWD-SA-7032 / 57 Sample Information Box for Segment 4 the RDX Measurements for the 2 MI Samples in Segment 4 #12;Range Sustainability (VSP) PNWD-SA-7032 58 PNWD;Range Sustainability (VSP) PNWD-SA-7032 59 PNWD-SA-7032 / 59 Sample Information Box for Segment 4 UCL

  19. Range Sustainability (VSP) PNWD-SA-7032 17

    E-Print Network [OSTI]

    Range Sustainability (VSP) PNWD-SA-7032 17 PNWD-SA-7032 / 17 Edit Sample Areas Define New Sample Area Defined Sample Area #12;Range Sustainability (VSP) PNWD-SA-7032 18 PNWD-SA-7032 / 18 "New Area" button on the Toolbar Defined Sample Area #12;Range Sustainability (VSP) PNWD-SA-7032 19 PNWD-SA-7032

  20. Photonic microwave bandpass filter with improved dynamic range

    E-Print Network [OSTI]

    Yao, Jianping

    Photonic microwave bandpass filter with improved dynamic range Yu Yan and Jianping Yao* Microwave A technique to improve the dynamic range of a photonic microwave bandpass filter is proposed and experi. The dynamic range of the photonic microwave bandpass filter is increased by reducing the optical

  1. Bylaws of the Range Cattle Research and Education Center

    E-Print Network [OSTI]

    Hill, Jeffrey E.

    Bylaws of the Range Cattle Research and Education Center University of Florida December 11, 2009 Preamble The shared goals of the faculty and administration of the Range Cattle Research and Education ­ Governance of the Range Cattle Research and Education Center These Bylaws establish the general principles

  2. Institute of Food and Agricultural Sciences Range Cattle

    E-Print Network [OSTI]

    Ma, Lena

    Institute of Food and Agricultural Sciences Range Cattle Research and Education Center Field Day at the Range Cattle Research and Education Center in Ona, Florida. The laboratory provides forage testing digestible nutrients (TDN). Mail samples to Forage Extension Laboratory, UF/IFAS, Range Cattle REC, 3401

  3. VOLUMETRIC MODELING THROUGH FUSION OF MULTIPLE RANGE IMAGES WITH CONFIDENCE

    E-Print Network [OSTI]

    Abidi, Mongi A.

    VOLUMETRIC MODELING THROUGH FUSION OF MULTIPLE RANGE IMAGES WITH CONFIDENCE ESTIMATE A Thesis application using range images. A review of the volumetric modeling literature leads us to believe that we can to be as e cient with range images as other volumetric approaches. The second half of this thesis describes

  4. Tonopah Test Range Post-Closure Inspection Annual Report, Tonopah Test Range, Nevada, Calendar Year 2002

    SciTech Connect (OSTI)

    R. B. Jackson

    2003-08-01

    This Post-Closure Inspection Annual Report provides documentation of the semiannual inspections conducted at the following Corrective Action Units (CAU)s: CAU 400: Bomblet Pit and Five Points Landfill; CAU 404: Roller Coaster Lagoons and Trench; CAU 407: Roller Coaster RadSafe Area; CAU 424: Area 3 Landfill Complexes; CAU 426: Cactus Spring Waste Trenches; CAU 427: Septic Waste Systems 2, 6; and CAU 453: Area 9 UXO Landfill, all located at the Tonopah Test Range, Nevada. Post-closure inspections are not required at CAU 400 but are conducted to monitor vegetation and fencing at the site. Site inspections were conducted in May and November 2002. All site inspections were made after Nevada Division of Environmental Protection (NDEP) approval of the appropriate Closure Report (CR), excluding CAU 400 which did not require a CR, and were conducted in accordance with the Post-Closure Inspection Plans in the NDEP-approved CRs. Post-closure inspections conducted during 2002 identified several areas requiring maintenance/repairs. Maintenance work and proposed additional monitoring are included in the appropriate section for each CAU. This report includes copies of the Post-Closure Inspection Plans, Post-Closure Inspection Checklists, copies of the field notes, photographs, and the Post-Closure Vegetative Monitoring Report. The Post-Closure Inspection Plan for each CAU is located in Attachment A. Post-Closure Inspection Checklists are in Attachment B. Copies of the field notes from each inspection are included in Attachment C. Attachment D consists of the photographic logs and photographs of the sites. The post-closure vegetative monitoring report for calendar year 2002 is included in Attachment E.

  5. 200-keV He sup + -ion irradiation effects on the properties of pulsed-laser-deposited YBa sub 2 Cu sub 3 O sub 7 minus x thin films

    SciTech Connect (OSTI)

    Vadlamannati, S. ); England, P.; Stoffel, N.G. Bellcore, Red Bank, New Jersey 07701 ); Findikoglu, A.; Li, Q. ); Venkatesan, T. Bellcore, Red Bank, New Jersey 07701 ); McLean, W.L. )

    1991-03-01

    We report the effects of 200-keV He{sup +}-ion irradiation on the properties of high-quality YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} thin films made {ital in} {ital situ} by pulsed-laser deposition. There is no significant change in {ital T}{sub {ital c}} or the normal-state resistivity for fluences up to 1{times}10{sup 14} He{sup +}/cm{sup 2}. There is only a small increase in the critical current density {ital J}{sub {ital c}} measured at 60 K for fluences up to 3{times}10{sup 13} He{sup +}/cm{sup 2} and in nonzero magnetic fields. At fluences above 1{times}10{sup 14} He{sup +}/cm{sup 2}, the induced changes are more rapid and have a deleterious effect on the superconducting properties.

  6. Geographic Information System At Northern Basin & Range Region...

    Open Energy Info (EERE)

    Nash & Johnson, 2003) Exploration Activity Details Location Northern Basin and Range Geothermal Region Exploration Technique Geographic Information System Activity Date Usefulness...

  7. Geographic Information System At Northern Basin & Range Region...

    Open Energy Info (EERE)

    Location Northern Basin and Range Geothermal Region Exploration Technique Geographic Information System Activity Date Usefulness useful regional reconnaissance DOE-funding Unknown...

  8. Tonopah Test Range Environmental Restoration Corrective Action Sites

    SciTech Connect (OSTI)

    NSTec Environmental Restoration

    2010-08-04

    This report describes the status (closed, closed in place, or closure in progress) of the Corrective Action Sites and Corrective Action Units at the Tonopah Test Range

  9. Thermal Gradient Holes At Northern Basin & Range Region (Pritchett...

    Open Energy Info (EERE)

    Thermal Gradient Holes At Northern Basin & Range Region (Pritchett, 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal Gradient Holes...

  10. Modeling-Computer Simulations At Nevada Test And Training Range...

    Open Energy Info (EERE)

    Modeling-Computer Simulations At Nevada Test And Training Range Area (Sabin, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  11. Aerial Photography At Nevada Test And Training Range Area (Sabin...

    Open Energy Info (EERE)

    Aerial Photography At Nevada Test And Training Range Area (Sabin, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Aerial...

  12. Geodetic Survey At Nevada Test And Training Range Area (Sabin...

    Open Energy Info (EERE)

    Geodetic Survey At Nevada Test And Training Range Area (Sabin, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geodetic Survey At...

  13. Geographic Information System At Nevada Test And Training Range...

    Open Energy Info (EERE)

    Geographic Information System At Nevada Test And Training Range Area (Sabin, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  14. Geothermometry At Nevada Test And Training Range Area (Sabin...

    Open Energy Info (EERE)

    Geothermometry At Nevada Test And Training Range Area (Sabin, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermometry At...

  15. LOW-HIGH VALUES FOR PETROLEUM AVERAGE INVENTORY RANGES (MILLION...

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

    ENERGY INFORMATION ADMINISTRATION LOW-HIGH VALUES FOR PETROLEUM AVERAGE INVENTORY RANGES (MILLION BARRELS) FILE UPDATED April 2004 Line Month Low High Number Product Name Geography...

  16. Hydrothermal Heat Discharge In The Cascade Range, Northwestern...

    Open Energy Info (EERE)

    United States Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Hydrothermal Heat Discharge In The Cascade Range, Northwestern United States...

  17. Refraction Survey At Northern Basin & Range Region (Heimgartner...

    Open Energy Info (EERE)

    Et Al., 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Refraction Survey At Northern Basin & Range Region (Heimgartner, Et Al., 2005)...

  18. Data Acquisition-Manipulation At Northern Basin & Range Region...

    Open Energy Info (EERE)

    Data Acquisition-Manipulation At Northern Basin & Range Region (Coolbaugh, Et Al., 2005 - 2) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Data...

  19. Geographic Information System At Nw Basin & Range Region (Nash...

    Open Energy Info (EERE)

    Geographic Information System At Nw Basin & Range Region (Nash & Johnson, 2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geographic...

  20. Modeling-Computer Simulations At Nw Basin & Range Region (Pritchett...

    Open Energy Info (EERE)

    Modeling-Computer Simulations At Nw Basin & Range Region (Pritchett, 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Modeling-Computer...

  1. Data Acquisition-Manipulation At Nw Basin & Range Region (Coolbaugh...

    Open Energy Info (EERE)

    Data Acquisition-Manipulation At Nw Basin & Range Region (Coolbaugh, Et Al., 2005 - 2) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Data...

  2. Compound and Elemental Analysis At Nw Basin & Range Region (Coolbaugh...

    Open Energy Info (EERE)

    Compound and Elemental Analysis At Nw Basin & Range Region (Coolbaugh, Et Al., 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Compound and...

  3. Geographic Information System At Nw Basin & Range Region (Coolbaugh...

    Open Energy Info (EERE)

    Geographic Information System At Nw Basin & Range Region (Coolbaugh, Et Al., 2005 - 2) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geographic...

  4. Geothermometry At Nw Basin & Range Region (Shevenell & De Rocher...

    Open Energy Info (EERE)

    Geothermometry At Nw Basin & Range Region (Shevenell & De Rocher, 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermometry At Nw...

  5. Trace Element Analysis At Nw Basin & Range Region (Coolbaugh...

    Open Energy Info (EERE)

    Trace Element Analysis At Nw Basin & Range Region (Coolbaugh, Et Al., 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Trace Element...

  6. Modeling-Computer Simulations At Nw Basin & Range Region (Biasi...

    Open Energy Info (EERE)

    Modeling-Computer Simulations At Nw Basin & Range Region (Biasi, Et Al., 2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Modeling-Computer...

  7. Geographic Information System At Nw Basin & Range Region (Blewitt...

    Open Energy Info (EERE)

    Geographic Information System At Nw Basin & Range Region (Blewitt, Et Al., 2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geographic...

  8. Data Acquisition-Manipulation At Northern Basin & Range Region...

    Open Energy Info (EERE)

    References D. D. Blackwell, K. W. Wisian, M. C. Richards, Mark Leidig, Richard Smith, Jason McKenna (2003) Geothermal Resource Analysis And Structure Of Basin And Range...

  9. Data Acquisition-Manipulation At Nw Basin & Range Region (Blackwell...

    Open Energy Info (EERE)

    References D. D. Blackwell, K. W. Wisian, M. C. Richards, Mark Leidig, Richard Smith, Jason McKenna (2003) Geothermal Resource Analysis And Structure Of Basin And Range...

  10. Verification Method for SSI Problems with Extended Parameter Ranges

    Broader source: Energy.gov [DOE]

    Verification Method for SSI Problems with Extended Parameter Ranges 2014 U.S. DOE Natural Phenomena Hazards Meeting Carl J. Costantino and Associates www.cjcassoc.com

  11. Structure, tectonics and stress field of the Coso Range, Inyo...

    Open Energy Info (EERE)

    Structure, tectonics and stress field of the Coso Range, Inyo County, California Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Structure,...

  12. Direct-Current Resistivity Survey At Northern Basin & Range Region...

    Open Energy Info (EERE)

    Direct-Current Resistivity Survey At Northern Basin & Range Region (Pritchett, 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  13. Direct-Current Resistivity Survey At Nw Basin & Range Region...

    Open Energy Info (EERE)

    Direct-Current Resistivity Survey At Nw Basin & Range Region (Pritchett, 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Direct-Current...

  14. ORISE: Nuclear engineering degrees at highest ranges since 1980s

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

    ORISE report shows graduation, enrollment rates for nuclear engineering candidates are still at highest ranges reported since 1980s Report also shows shifts in career opportunities...

  15. Abraham Hot Springs Geothermal Area Northern Basin and Range...

    Open Energy Info (EERE)

    Basin and Range Geothermal Region Medical Hot Springs Geothermal Area Idaho Batholith Medicine Lake Geothermal Area Cascades Melozi Hot Springs Geothermal Area Alaska Geothermal...

  16. Two-Phase Westward Encroachment of Basin and Range Extension...

    Open Energy Info (EERE)

    Nevada Abstract 1 Structural, geophysical, and thermochronological data from the transition zone between the Sierra Nevada and the Basin and Range province at latitude 39N...

  17. Teleseismic-Seismic Monitoring At Nw Basin & Range Region (Biasi...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Nw Basin & Range Region (Biasi, Et Al., 2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  18. Teleseismic-Seismic Monitoring At Nw Basin & Range Region (Biasi...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Nw Basin & Range Region (Biasi, Et Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  19. Seismicity and seismic stress in the Coso Range, Coso geothermal...

    Open Energy Info (EERE)

    Seismicity and seismic stress in the Coso Range, Coso geothermal field, and Indian Wells Valley region, Southeast-Central California Jump to: navigation, search OpenEI Reference...

  20. Teleseismic-Seismic Monitoring At Northern Basin & Range Region...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Northern Basin & Range Region (Biasi, Et Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  1. Teleseismic-Seismic Monitoring At Northern Basin & Range Region...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Northern Basin & Range Region (Biasi, Et Al., 2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  2. 5/16/05 ABYSS-Lite Decadal Survey Concept 1 ABYSS-Lite

    E-Print Network [OSTI]

    Sandwell, David T.

    , Honolulu luther@soest.hawaii.edu Mariano John Exxon-Mobil john.mariano@exxonmobil.com Marks Karen NOAA Lab

  3. [Major revisionposted 2/4/15 (replaces 5/16/11 edition)] Operating Policy and Procedure

    E-Print Network [OSTI]

    Rock, Chris

    /PROCEDURE 1. Definitions a. Home page--The primary page or entry point of a website b. Primary public entry University (TTU) has designated www.ttu.edu and www.texastech.edu as the key public entry points for the university. c. Secondary public entry point--Any supplementary web page designed for the public to access

  4. MyRED -Adviser Self Service 5/16/2013 Page 1

    E-Print Network [OSTI]

    Farritor, Shane

    to the student. If you already know the student's NUID number, enter the ID number in the Empl ID: search field.............................................................................................................. 7 Term Summary Area ..........................................................................................15 Search Tab Functions

  5. Zeitschrift fr Feldherpetologie, Supplement 5: 16 #####2004 D. GLANDT & A. KRONSHAGE (Hrsg.): Der Europische Laubfrosch

    E-Print Network [OSTI]

    Alvarez, Nadir

    Ebene befasst sich mit der Landnutzung in einem Umkreisradius von 30 m. Die dritte Ebene berücksichtigt

  6. [FIXED] perl 5.16.0 File::Glob() causes crashes

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLos Alamos verifies largestnamedGroup! ! NUG 2014!EVALUATION OFJGI

  7. Noise in 3D Laser Range Scanner Data Xianfang Sun

    E-Print Network [OSTI]

    Martin, Ralph R.

    Noise in 3D Laser Range Scanner Data Xianfang Sun Cardiff University, UK Beihang University, China University, UK Abstract This paper discusses noise in range data measured by a Konica Mi- nolta Vivid 910 Gaussian noise, which is independently distributed at each mesh point. Measure- ments of an accurately

  8. Range Sustainability (VSP) PNWD-SA-7032 9

    E-Print Network [OSTI]

    Range Sustainability (VSP) PNWD-SA-7032 9 PNWD-SA-7032 / 9 What are the Steps in Using the VSP Sustainability (VSP) PNWD-SA-7032 10 PNWD-SA-7032 / 10 Hypotheses Being TestedHypotheses Being Tested is false., i.e., on showing that the segment does not need to be bumped out. #12;Range Sustainability (VSP

  9. Range Sustainability (VSP) PNWD-SA-7032 49

    E-Print Network [OSTI]

    Range Sustainability (VSP) PNWD-SA-7032 49 PNWD-SA-7032 / 49 Hypothetical Case Study (Continued Sustainability (VSP) PNWD-SA-7032 50 PNWD-SA-7032 / 50 Hypothetical Case Study (Continued)Hypothetical Case Study Save #12;Range Sustainability (VSP) PNWD-SA-7032 51 PNWD-SA-7032 / 51 Coordinate View X and Y

  10. Range Sustainability (VSP) PNWD-SA-7032 33

    E-Print Network [OSTI]

    Range Sustainability (VSP) PNWD-SA-7032 33 PNWD-SA-7032 / 33 Map View Sample Information Box Click in this Column #12;Range Sustainability (VSP) PNWD-SA-7032 34 PNWD-SA-7032 / 34 Sample Information Box Sustainability (VSP) PNWD-SA-7032 35 PNWD-SA-7032 / 35 Segment Sample Results Box Enter Measurements

  11. Optimum Transmission Range for Wireless Ad Hoc Networks

    E-Print Network [OSTI]

    Deng, Jing

    Optimum Transmission Range for Wireless Ad Hoc Networks Jing Deng Dept. of EECS Syracuse Univ-- The transmission range that achieves the most economical use of energy in wireless ad hoc networks is studied under homogeneous node distribution. By as- suming the knowledge of node location, we first proposed a transmission

  12. Project Report Evaluation of TDWR Range-Velocity

    E-Print Network [OSTI]

    Cho, John Y. N.

    Project Report ATC-310 Evaluation of TDWR Range-Velocity Ambiguity Mitigation Techniques J. Y. N the degree of mitigation offered by existing phase diversity methods to these problems. Using optimized-OOG·OOO2. 16. Abstract Range and velocity ambiguities pose significant data quality challenges

  13. Microwave frequency measurement with improved measurement range and

    E-Print Network [OSTI]

    Yao, Jianping

    Microwave frequency measurement with improved measurement range and resolution X. Zou and J. Yao An approach is proposed and demonstrated to improve the measure- ment range and resolution of a microwave frequency measurement system. Two optical wavelengths are modulated by a microwave signal in a Mach

  14. Toward the Long-range Prediction of Severe Convective Windstorms

    E-Print Network [OSTI]

    Kuligowski, Bob

    Toward the Long-range Prediction of Severe Convective Windstorms Ken Pryor Department review pertaining to severe convective windstorm (SCW) structure and evolution. · Identify potential for the development of a long-range SCW prediction technique. #12;Background · Severe windstorms resulting from large

  15. Efficient wireless non-radiative mid-range energy transfer

    E-Print Network [OSTI]

    Efficient wireless non-radiative mid-range energy transfer Aristeidis Karalis a,*, J.D. Joannopoulos b , Marin Soljacic´ b a Department of Electrical Engineering and Computer Science, Massachusetts-range wireless energy transfer. Ó 2007 Elsevier Inc. All rights reserved. Keywords: Wireless energy; Wireless

  16. Range Cattle Research & Education Center FIELD DAYOctober 1, 2013

    E-Print Network [OSTI]

    Ma, Lena

    Range Cattle Research & Education Center FIELD DAYOctober 1, 2013 Forage and Cattle #12;RCREC Field and Center Director, Range Cattle Research and Education Center 10:15 AM Opening Remarks Henry Kempfer, Kempfer Cattle Company and PresidentElect, Florida Cattlemen's Association 10:30 AM Cogongrass

  17. Energy Distribution Control in Wireless Sensor Networks Through Range Optimization

    E-Print Network [OSTI]

    Yanikoglu, Berrin

    Energy Distribution Control in Wireless Sensor Networks Through Range Optimization M.Sarper Gokturk--A major objective in wireless sensor networks is to find optimum routing strategies for energy efficient a location-based routing framework to control the energy distribution in a network where transmission ranges

  18. Research Article Application of Short-Range LIDAR in

    E-Print Network [OSTI]

    Tang, Wenbo

    a series of meteorological instruments, including long-range LIDAR (light detection and ranging) systems Island of complex terrain to the south. The Lantau Island is composed of rows of northeast- southwest are brought about by strong winds across the Lantau Island to the south of the airport, including the strong

  19. Mode coherence at megameter ranges in the North Pacific Ocean

    E-Print Network [OSTI]

    Wage, Kathleen

    Mode coherence at megameter ranges in the North Pacific Ocean Kathleen E. Wage, Matthew A and the Acoustical Society of America. #12;Mode coherence at megameter ranges in the North Pacific Ocean Kathleen E Thermometry of Ocean Climate ATOC and Alternate Source Test AST experiments. Vertical line arrays at Hawaii

  20. Renewable Energy and the Nevada Test and Training Range

    E-Print Network [OSTI]

    Lewis, Robert Michael

    1 Renewable Energy and the Nevada Test and Training Range Wednesday, December 15, 2010 Melissa due to renewable energy infrastructure development at the Nevada Test and Training Range. Nevada has have ever-increasing renewable energy goals. However, proposals for the development of 116 renewable

  1. Laser Ranging for Gravitational, Lunar, and Planetary Science

    E-Print Network [OSTI]

    Stephen M. Merkowitz; Philip W. Dabney; Jeffrey C. Livas; Jan F. McGarry; Gregory A. Neumann; Thomas W. Zagwodzki

    2007-12-20

    More precise lunar and Martian ranging will enable unprecedented tests of Einstein's theory of General Relativity and well as lunar and planetary science. NASA is currently planning several missions to return to the Moon, and it is natural to consider if precision laser ranging instruments should be included. New advanced retroreflector arrays at carefully chosen landing sites would have an immediate positive impact on lunar and gravitational studies. Laser transponders are currently being developed that may offer an advantage over passive ranging, and could be adapted for use on Mars and other distant objects. Precision ranging capability can also be combined with optical communications for an extremely versatile instrument. In this paper we discuss the science that can be gained by improved lunar and Martian ranging along with several technologies that can be used for this purpose.

  2. Rocky Flats Plant Live-Fire Range Risk Analysis Report

    SciTech Connect (OSTI)

    Nicolosi, S.L.; Rodriguez, M.A.

    1994-04-01

    The objective of the Live-Fire Range Risk Analysis Report (RAR) is to provide an authorization basis for operation as required by DOE 5480.16. The existing Live-Fire Range does not have a safety analysis-related authorization basis. EG&G Rocky Flats, Inc. has worked with DOE and its representatives to develop a format and content description for development of an RAR for the Live-Fire Range. Development of the RAR is closely aligned with development of the design for a baffle system to control risks from errant projectiles. DOE 5480.16 requires either an RAR or a safety analysis report (SAR) for live-fire ranges. An RAR rather than a SAR was selected in order to gain flexibility to more closely address the safety analysis and conduct of operation needs for a live-fire range in a cost-effective manner.

  3. 16 March 2009 John Learned @ NNS Mtg HAwaii 1 New Ideas in Long RangeNew Ideas in Long Range

    E-Print Network [OSTI]

    Learned, John

    16 March 2009 John Learned @ NNS Mtg HAwaii 1 New Ideas in Long RangeNew Ideas in Long Range. of Physics and Astronomy University of Hawaii #12;16 March 2009 John Learned @ NNS Mtg HAwaii 2 Introduction large detectors. · Best if done far from other reactors. #12;16 March 2009 John Learned @ NNS Mtg HAwaii

  4. Structure, Stability, and Formation Pathways of Colloidal Gels in Systems with Short-Range Attraction and Long-Range Repulsion

    E-Print Network [OSTI]

    Leunissen, Mirjam

    Structure, Stability, and Formation Pathways of Colloidal Gels in Systems with Short formed upon centrifugation of dilute suspensions of spherical colloids (radius 446 nm) that interact in concentrated suspensions of colloids with long-ranged repulsion and short-ranged attraction15 being a clear

  5. Tonopah Test Range Summary of Corrective Action Units

    SciTech Connect (OSTI)

    Ronald B. Jackson

    2007-05-01

    Corrective Action Sites (CASs) and Corrective Action Units (CAUs) at the Tonopah Test Range (TTR) may be placed into three categories: Clean Closure/No Further Action, Closure in Place, or Closure in Progress.

  6. Digital Dynamic Range Compressor Design--A Tutorial and Analysis

    E-Print Network [OSTI]

    Reiss, Josh

    PAPERS Digital Dynamic Range Compressor Design-- A Tutorial and Analysis DIMITRIOS GIANNOULIS formal knowledge and analysis of compressor design techniques. In this tutorial we describe several become audio engineers' favorites for certain types of signal. The analysis of compressor designs

  7. Evolution of Extensional Basins and Basin and Range Topography...

    Open Energy Info (EERE)

    movements on an array of strike-slip and normal fault systems have resulted in the uplift and preservation of older basins in modern ranges. One of the best exposed of these is...

  8. Rangeland Drought Management for Texans: Toxic Range Plants 

    E-Print Network [OSTI]

    Hart, Charles R.; Carpenter, Bruce B.

    2001-05-03

    Toxic plants can pose a major threat to livestock during a drought. This publication explains the importance of knowing which plants are toxic, keeping the range healthy, and preventing toxic plant problems....

  9. The Compact RCS / Antenna Range at MIT Lincoln Laboratory

    E-Print Network [OSTI]

    Shields, Michael W.

    A new compact range with a state-of-the-art instrumentation system was installed at Lincoln Laboratory and is currently in use. This paper describes the chamber with varied-height absorber, the rolled-edge reflector and ...

  10. Cenozoic volcanic geology of the Basin and Range province in...

    Open Energy Info (EERE)

    Cenozoic volcanic geology of the Basin and Range province in Hidalgo County, southwestern New Mexico Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference...

  11. Reconciliation of local and long range tilt correlations in underdoped...

    Office of Scientific and Technical Information (OSTI)

    powder diffraction and inelastic neutron scattering (INS) approaches. Long-range and static CuO tilt order with orthogonally inequivalent Cu-O bonds in the CuO planes in...

  12. A New Algorithm for Learning Range Restricted Horn Expressions 

    E-Print Network [OSTI]

    Arias, Marta; Khardon, Roni

    A learning algorithm for the class of range restricted Horn expressions is presented and proved correct. The algorithm works within the framework of learning from entailment, where the goal is to exactly identify some ...

  13. Multi-dimensional position sensor using range detectors

    DOE Patents [OSTI]

    Vann, Charles S. (Fremont, CA)

    2000-01-01

    A small, non-contact optical sensor uses ranges and images to detect its relative position to an object in up to six degrees of freedom. The sensor has three light emitting range detectors which illuminate a target and can be used to determine distance and two tilt angles. A camera located between the three range detectors senses the three remaining degrees of freedom, two translations and one rotation. Various range detectors, with different light sources, e.g. lasers and LEDs, different collection options, and different detection schemes, e.g. diminishing return and time of flight can be used. This sensor increases the capability and flexibility of computer controlled machines, e.g. it can instruct a robot how to adjust automatically to different positions and orientations of a part.

  14. Modeling-Computer Simulations At Nw Basin & Range Region (Blackwell...

    Open Energy Info (EERE)

    systems References D. D. Blackwell, K. W. Wisian, M. C. Richards, Mark Leidig, Richard Smith, Jason McKenna (2003) Geothermal Resource Analysis And Structure Of Basin And Range...

  15. Modeling-Computer Simulations At Northern Basin & Range Region...

    Open Energy Info (EERE)

    systems References D. D. Blackwell, K. W. Wisian, M. C. Richards, Mark Leidig, Richard Smith, Jason McKenna (2003) Geothermal Resource Analysis And Structure Of Basin And Range...

  16. Climate Action Plans and Long-Range Transportation

    E-Print Network [OSTI]

    Bertini, Robert L.

    Climate Action Plans and Long-Range Transportation Plans in the Pacific Northwest: A Review Climate Change and Impacts Mitigation versus Adaptation Impacts of Climate Change: Nation & the Pacific Northwest Climate Change Planning Efforts Transportation Sector Response - Survey Recommendations Continued

  17. A Comparison of Short Rayleigh Range FEL Performance with Simulations

    SciTech Connect (OSTI)

    Benson, Stephen; Evtushenko, Pavel; Michelle D. Shinn; Neil, George; Blau, Joe; Burggraff, D.; Colson, William; Crooker, P.P.; Sans Aguilar, J.

    2007-08-01

    One approach to attaining very high power in a free-electron laser (FEL) is to operate with a Rayleigh range much smaller than the wiggler length. Previously, 3D simulations of Free-electron laser (FEL) oscillators showed that FEL gain doesn't fall off with Rayleigh range as predicted by one-dimensional simulations*. They also predict that the angular tolerance for the mirrors is much large than simplistic theory predicts. Using the IR Upgrade laser at Jefferson Lab lasing at 935 nm we have studied the performance of an FEL with very short Rayleigh range. We also looked at the angular sensitivity for several different Rayleigh ranges. We find very good agreement between simulations and measured gain and angular sensitivities. Surprisingly the gain continues to rise as the Rayleigh range is shortened and continues to grow even when the resonator becomes geometrically unstable. The same behavior is seen in both the experiment and simulations. We also find that, even for large Rayleigh r

  18. State-selective laser photoionization of neutral benzene molecules ejected from keV ion bombarded C{sub 6}H{sub 6}/Ag{l_brace}111{r_brace}

    SciTech Connect (OSTI)

    Meserole, C. A.; Vandeweert, E.; Chatterjee, R.; Chakraborty, B. R.; Garrison, B. J.; Winograd, N.; Postawa, Z.

    1998-12-16

    One-color two-photon ionization spectroscopy was used to probe state-selectively neutral benzene molecules desorbed from a benzene overlayer physisorbed on a Ag{l_brace}111{r_brace} surface upon 8 keV Ar{sup +} bombardment. Time distributions were measured for benzene molecules ejected in the zero level of the molecular ground state and in the first state of the {nu}{sub 6} ' vibration. These distributions are found to show a strong dependence both on the internal energy of the ejected molecules and the degree of coverage of the Ag surface. Up to monolayer coverages, benzene molecules are ejected by direct collisions with Ag particles sputtered from the underlying substrate. Molecules with higher internal energy leave the surface with a distribution shifted towards lower flight times. At multilayer coverages, a second, thermal-like ejection mechanism gains significance. It is suggested that only molecules excited near the benzene-vacuum interface, survive the ejection process without being deexcited.

  19. The Millennium Gas project aims to undertake smoothed-particle hydrodynamic resimulations of the Millennium Simulation, providing many hundred massive galaxy clusters for comparison with X-ray surveys (170 clusters with kTsl > 3 keV). This paper looks at

    E-Print Network [OSTI]

    Thomas, Peter

    . Abstract The Millennium Gas project aims to undertake smoothed-particle hydrodynamic-ray surveys (170 clusters with kTsl > 3 keV). This paper looks at the hot gas and stellar fractions-core systems but are successful in matching the hot gas profiles of non-cool-core clusters. Although

  20. Range descriptions for the spherical mean Radon transform

    E-Print Network [OSTI]

    M. Agranovsky; P. Kuchment; E. T. Quinto

    2006-09-02

    The transform considered in the paper averages a function supported in a ball in $\\RR^n$ over all spheres centered at the boundary of the ball. This Radon type transform arises in several contemporary applications, e.g. in thermoacoustic tomography and sonar and radar imaging. Range descriptions for such transforms are important in all these areas, for instance when dealing with incomplete data, error correction, and other issues. Four different types of complete range descriptions are provided, some of which also suggest inversion procedures. Necessity of three of these (appropriately formulated) conditions holds also in general domains, while the complete discussion of the case of general domains would require another publication.

  1. GEA Heat Exchangers GEA Searle Cooler and Condensing Unit Ranges

    E-Print Network [OSTI]

    Frandsen, Søren

    process cooling, combined heat and power installations and air-conditioning equip- ment for hospitalsGEA Heat Exchangers GEA Searle Cooler and Condensing Unit Ranges Top-level engineering solutions,Eurovent verification and many more. GEA is one of the longest established and principal manufacturers of heat exchange

  2. Wildland Fire Risk and Management on West and South Ranges

    E-Print Network [OSTI]

    #12;#12;Wildland Fire Risk and Management on West and South Ranges Schofield Barracks, Oahu March) Intermountain Fire Science Lab, Missoula, MT CEMML TPS01-11 #12;#12;Wildland Fire Risk and Management on West .................................................................................................................................. 1 Fire Characteristics of Common Species

  3. Aerodynamic Optimization Under a Range of Operating Conditions

    E-Print Network [OSTI]

    Zingg, David W.

    Aerodynamic Optimization Under a Range of Operating Conditions David W. Zingg and Samy Elias. This can be achieved through multipoint optimization. The desired performance objective and operating conditions must be speci ed, and the resulting optimization problem must be solved in such a manner

  4. Session 2: Modelling air pollution across a range of scales

    E-Print Network [OSTI]

    Session 2: Modelling air pollution across a range of scales Ruth Doherty, Massimo Vieno, Ian Mac) EMEP2009 (less complex) Observations Modelling regional air pollution #12;Nested regions: 50 to 5 to 1 km2 O3 concentration (ppb) NO2 concentration (µg m-3) #12;Modelling Urban air pollution Regional

  5. The height and range of watermelons without wall

    E-Print Network [OSTI]

    Thomas Feierl

    2009-04-03

    We determine the weak limit of the distribution of the random variables "height" and "range" on the set of p-watermelons without wall restriction as the number of steps tends to infinity. Additionally, we provide asymptotics for the moments of the random variable "height".

  6. A New Wide Range Equation of State for Helium-4 

    E-Print Network [OSTI]

    Ortiz Vega, Diego O

    2013-08-01

    -19], vapor pressure [20-24], and Pressure- Volume-Temperature (PVT) data [25-27]. Even though these approaches may be accurate over a limited range, they often fail under other conditions or when predicting a derived property different from the one used...

  7. Technique for extending the range of a signal measuring circuit

    DOE Patents [OSTI]

    Chaprnka, Anthony G. (Cockeysville, MD); Sun, Shan C. (Pittsburgh, PA); Vercellotti, Leonard C. (Verona, PA)

    1978-01-01

    An input signal supplied to a signal measuring circuit is either amplified or attenuated as necessary to establish the magnitude of the input signal within the defined dynamic range of the measuring circuit and the output signal developed by the measuring circuit is subsequently readjusted through amplification or attenuation to develop an output signal which corresponds to the magnitude of the initial input signal.

  8. Reducing Aviation's Environmental Impact Through Large Aircraft For Short Ranges

    E-Print Network [OSTI]

    Zingg, David W.

    aviation's impact on climate change. Examples include alternative fuels,4,5 blendedReducing Aviation's Environmental Impact Through Large Aircraft For Short Ranges Gaetan K.W Kenway,500 nm. We show that the impact of civil aviation on climate change can be reduced by using large

  9. Ranges of Human Mobility in Los Angeles and New York

    E-Print Network [OSTI]

    Kobourov, Stephen G.

    1 Ranges of Human Mobility in Los Angeles and New York Sibren Isaacman, Richard Becker, Ram´on C. In this work, we study human mobility in Los Angeles and New York by analyzing anonymous records of approximate): Los Angeles (LA) and New York (NY). Specifically, we analyze anonymous records of approximate cell

  10. Author's Accepted Manuscript Full range determination of 222

    E-Print Network [OSTI]

    ; surface water; groundwater. 1. INTRODUCTION Radon is a rare gas with three natural radioactive isotopesAuthor's Accepted Manuscript Full range determination of 222 Rn at the watershed scale by liquid Rn at the watershed scale by liquid scintillation counting, Applied Radiation and Isotopes, http

  11. Publications Forest Research publishes a wide range of

    E-Print Network [OSTI]

    Publications Forest Research publishes a wide range of material, from corporate reports and plans publications catalogue at www.forestry.gov.uk/publications In addition, our researchers publish peer Annual Report and Accounts 2007­2008 #12;Publications Forestry Commission technical publications

  12. Distributed Range-Based Relative Localization of Robot Swarms

    E-Print Network [OSTI]

    Napp, Nils

    Distributed Range-Based Relative Localization of Robot Swarms Alejandro Cornejo and Radhika Nagpal studies the problem of having mobile robots in a multi-robot system maintain an estimate of the relative position and relative orientation of near-by robots in the environment. This problem is studied

  13. The Impact of Imported Water on Hardwoods Range Ecosystems1

    E-Print Network [OSTI]

    introduction of contaminants into water-ways. Although counter-intuitive, water itself has become a pollutant549 The Impact of Imported Water on Hardwoods Range Ecosystems1 Thomas Scott2 Abstract Water Pollution is defined as the corruption of ecosystems, human health, and local economies by the inappropriate

  14. Using Body Condition Scores to Manage Range Cows and Rangeland 

    E-Print Network [OSTI]

    Lyons, Robert K.; Machen, Richard V.

    2001-07-19

    , to avoid damage to for- ages and soils, the range resource should be moni- tored closely when it has high stock densities, such as those in the spring herd. 7.5 7 6.5 6 5.5 5 4.5 Aug Oct Dec Feb Apr Jun Body Condition Score Summer-calving Spring...

  15. We offer a full range of surgical expertise. Bariatric Surgery

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    We offer a full range of surgical expertise. Bariatric Surgery Appointments: 304-598-4890 Pediatric are a major tertiary referral center for the region and state, offering the highest level of clinical program offering cardiac surgery for children in the state. Pediatric cardiothoracic surgery Robert A

  16. BUILDING AN ACCURATE RANGE FINDER WITH OFF THE SHELF COMPONENTS'

    E-Print Network [OSTI]

    Southern California, University of

    -Marc, and Gkrard Medioni Institute for Robotics and Intelligent Systems Departments of Electrical Engineering of light projected on an object placed upon a rotary table driven by a personal computer. This computer of the rotary table and h the height along its axis of rotation. Choosing different viewpoints, Cartesian range

  17. Painting in High Dynamic Range M. Colbert a,*,1

    E-Print Network [OSTI]

    Reinhard, Erik

    Painting in High Dynamic Range M. Colbert a,*,1 , E. Reinhard b,a , C.E. Hughes a,2 a School two new brush constructs to a typical virtual painting interface, such as Adobe Photoshop. First, we the perception of glare as the underlying basis for determining the contrasts painted onto the HDR image, giving

  18. Little Green Codes: Energy-Efficient Short-Range Communication

    E-Print Network [OSTI]

    California at Berkeley, University of

    Little Green Codes: Energy-Efficient Short-Range Communication Pulkit Grover and Anant Sahai, the optimizing rate for our bounds on the energy consumption of green codes converges to 1 in the context of AWGN energy as green codes. Classical information theoretic approach finds the minimum transmission energy

  19. Range Sustainability (VSP) PNWD-SA-7032 1

    E-Print Network [OSTI]

    and Richard O. Gilbert Statistical Sciences Battelle Pacific Northwest Division Richland, Washington Prepared for Department of the Navy Naval Sea Systems Command NAVSEA Programs Field Office Goose Creek, SC #12;Range's GuidesVSP User's Guides User's guide for VSP RS module ? Gilbert R.O., J.E. Wilson and B.A. Pulsipher

  20. Test particle transport from long-range collisions* F. Anderegg

    E-Print Network [OSTI]

    California at San Diego, University of

    Test particle transport from long-range collisions* F. Anderegg , X.-P. Huang,a) E. M. Hollmann, C and Department of Physics, University of California at San Diego, La Jolla, California 92093 Received 11 November faster than the plasma. Test particle transport is then measured even though there is zero net transport

  1. Short range micro-power impulse radar with high resolution swept range gate with damped transmit and receive cavities

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1998-01-01

    A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with atypical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Uses of the invention include a replacement of ultrasound devices for fluid level sensing, automotive radar, such as cruise control and parking assistance, hidden object location, such as stud and rebar finding. Also, this technology can be used when positioned over a highway lane to collect vehicle count and speed data for traffic control. Techniques are used to reduce clutter in the receive signal, such as decoupling the receive and transmit cavities by placing a space between them, using conductive or radiative damping elements on the cavities, and using terminating plates on the sides of the openings.

  2. Short range micro-power impulse radar with high resolution swept range gate with damped transmit and receive cavities

    DOE Patents [OSTI]

    McEwan, T.E.

    1998-06-30

    A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with atypical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Uses of the invention include a replacement of ultrasound devices for fluid level sensing, automotive radar, such as cruise control and parking assistance, hidden object location, such as stud and rebar finding. Also, this technology can be used when positioned over a highway lane to collect vehicle count and speed data for traffic control. Techniques are used to reduce clutter in the receive signal, such as decoupling the receive and transmit cavities by placing a space between them, using conductive or radiative damping elements on the cavities, and using terminating plates on the sides of the openings. 20 figs.

  3. Evaluation of plastic materials for range shifting, range compensation, and solid-phantom dosimetry in carbon-ion radiotherapy

    SciTech Connect (OSTI)

    Kanematsu, Nobuyuki; Koba, Yusuke; Ogata, Risa [Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555 (Japan)

    2013-04-15

    Purpose: Beam range control is the essence of radiotherapy with heavy charged particles. In conventional broad-beam delivery, fine range adjustment is achieved by insertion of range shifting and compensating materials. In dosimetry, solid phantoms are often used for convenience. These materials should ideally be equivalent to water. In this study, the authors evaluated dosimetric water equivalence of four common plastics, high-density polyethylene (HDPE), polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), and polyoxymethylene (POM). Methods: Using the Bethe formula for energy loss, the Gottschalk formula for multiple scattering, and the Sihver formula for nuclear interactions, the authors calculated the effective densities of the plastics for these interactions. The authors experimentally measured variation of the Bragg peak of carbon-ion beams by insertion of HDPE, PMMA, and POM, which were compared with analytical model calculations. Results: The theoretical calculation resulted in slightly reduced multiple scattering and severely increased nuclear interactions for HDPE, compared to water and the other plastics. The increase in attenuation of carbon ions for 20-cm range shift was experimentally measured to be 8.9% for HDPE, 2.5% for PMMA, and 0.0% for POM while PET was theoretically estimated to be in between PMMA and POM. The agreement between the measurements and the calculations was about 1% or better. Conclusions: For carbon-ion beams, POM was dosimetrically indistinguishable from water and the best of the plastics examined in this study. The poorest was HDPE, which would reduce the Bragg peak by 0.45% per cm range shift, although with marginal superiority for reduced multiple scattering. Between the two clear plastics, PET would be superior to PMMA in dosimetric water equivalence.

  4. Can CMB data constrain the inflationary field range?

    SciTech Connect (OSTI)

    Garcia-Bellido, Juan [Instituto de Física Teórica IFT-UAM-CSIC, Universidad Autónoma de Madrid, C/ Nicolás Cabrera 13-15, Cantoblanco, 28049 Madrid (Spain); Roest, Diederik; Scalisi, Marco; Zavala, Ivonne, E-mail: juan.garciabellido@uam.es, E-mail: d.roest@rug.nl, E-mail: m.scalisi@rug.nl, E-mail: e.i.zavala@rug.nl [Centre for Theoretical Physics, University of Groningen, Nijenborgh 4, 9747 AG Groningen (Netherlands)

    2014-09-01

    We study to what extent the spectral index n{sub s} and the tensor-to-scalar ratio r determine the field excursion ?? during inflation. We analyse the possible degeneracy of ? ? by comparing three broad classes of inflationary models, with different dependence on the number of e-foldings N, to benchmark models of chaotic inflation with monomial potentials. The classes discussed cover a large set of inflationary single field models. We find that the field range is not uniquely determined for any value of (n{sub s}, r); one can have the same predictions as chaotic inflation and a very different ? ?. Intriguingly, we find that the field range cannot exceed an upper bound that appears in different classes of models. Finally, ? ? can even become sub-Planckian, but this requires to go beyond the single-field slow-roll paradigm.

  5. Long-range memory and multifractality in gold markets

    E-Print Network [OSTI]

    Mali, Provash

    2015-01-01

    Long-range correlation and fluctuation in the gold market time series of world's two leading gold consuming countries, namely China and India, are studied. For both the market series during the period 1985-2013 we observe a long-range persistence of memory in the sequences of maxima (minima) of returns in successive time windows of fixed length, but the series as a whole are found to be uncorrelated. Multifractal analysis for these series as well as for the sequences of maxima (minima) is carried out in terms of the multifractal detrended fluctuation analysis (MF-DFA) method. We observe a weak multifractal structure for the original series that is mainly originated from the fat-tailed probability distribution function of the values, and the multifractal nature of the original time series is enriched into their sequences of maximal (minimal) returns. A quantitative measure of multifractality is provided by using a set of "complexity parameters".

  6. Short-range correlations and neutrinoless double beta decay

    E-Print Network [OSTI]

    M. Kortelainen; O. Civitarese; J. Suhonen; J. Toivanen

    2007-01-18

    In this work we report on the effects of short-range correlations upon the matrix elements of neutrinoless double beta decay. We focus on the calculation of the matrix elements of the neutrino-mass mode of neutrinoless double beta decays of 48Ca and 76Ge. The nuclear-structure components of the calculation, that is the participant nuclear wave functions, have been calculated in the shell-model scheme for 48Ca and in the proton-neutron quasiparticle random-phase approximation (pnQRPA) scheme for 76Ge. We compare the traditional approach of using the Jastrow correlation function with the more complete scheme of the unitary correlation operator method (UCOM). Our results indicate that the Jastrow method vastly exaggerates the effects of short-range correlations on the neutrinoless double beta decay nuclear matrix elements.

  7. Novel Dynamics and Thermodynamics in systems with long range interactions

    E-Print Network [OSTI]

    Atenas, Boris

    2015-01-01

    Systems with long range interactions display some anomalies when its dynamics and thermodynamics are studied below certain conditions. Among these anomalies are the quasi- stationary states, which are exacerbated because of special initial conditions that are used here. We present in this letter a new Hamiltonian whose potential is inspired in the two-dipole interaction. An analytical solution is obtained for the equilibrium in the canonical ensemble that is coincident with the one obtained from computational simulations. However, results from this model presents a kind of nonequivalence of ensembles in long-living states before arriving to equilibrium. Thus, a complete characterization is made for the nonequilibrium through molecular dynamics. In which, novel quasi-stationary states are observed due to the long range interactions.

  8. Wide-range radioactive-gas-concentration detector

    DOE Patents [OSTI]

    Anderson, D.F.

    1981-11-16

    A wide-range radioactive-gas-concentration detector and monitor capable of measuring radioactive-gas concentrations over a range of eight orders of magnitude is described. The device is designed to have an ionization chamber sufficiently small to give a fast response time for measuring radioactive gases but sufficiently large to provide accurate readings at low concentration levels. Closely spaced parallel-plate grids provide a uniform electric field in the active region to improve the accuracy of measurements and reduce ion migration time so as to virtually eliminate errors due to ion recombination. The parallel-plate grids are fabricated with a minimal surface area to reduce the effects of contamination resulting from absorption of contaminating materials on the surface of the grids. Additionally, the ionization-chamber wall is spaced a sufficient distance from the active region of the ionization chamber to minimize contamination effects.

  9. Four-boson system with short-range interactions

    SciTech Connect (OSTI)

    Platter, L.; Hammer, H.-W.; Meissner, Ulf-G. [Forschungszentrum Juelich, Institut fuer Kernphysik, D-52425 Juelich (Germany); Helmholtz-Institut fuer Strahlen-und Kernphysik (Theorie), Universitaet Bonn, Nussallee 14-16, D-53115 Bonn (Germany); Institute for Nuclear Theory, University of Washington, Seattle, Washington 98195 (United States); Helmholtz-Institut fuer Strahlen-und Kernphysik (Theorie), Universitaet Bonn, Nussallee 14-16, D-53115 Bonn, Germany and Forschungszentrum Juelich, Institut fuer Kernphysik, D-52425 Juelich (Germany)

    2004-11-01

    We consider the nonrelativistic four-boson system with short-range forces and large scattering length in an effective quantum mechanics approach. We construct the effective interaction potential at leading order in the large scattering length and compute the four-body binding energies using the Yakubovsky equations. Cutoff independence of the four-body binding energies does not require the introduction of a four-body force. This suggests that two- and three-body interactions are sufficient to renormalize the four-body system. We apply the equations to {sup 4}He atoms and calculate the binding energy of the {sup 4}He tetramer. We observe a correlation between the trimer and tetramer binding energies similar to the Tjon line in nuclear physics. Over the range of binding energies relevant to {sup 4}He atoms, the correlation is approximately linear.

  10. Multi-range force sensors utilizing shape memory alloys

    DOE Patents [OSTI]

    Varma, Venugopal K. (Knoxville, TN)

    2003-04-15

    The present invention provides a multi-range force sensor comprising a load cell made of a shape memory alloy, a strain sensing system, a temperature modulating system, and a temperature monitoring system. The ability of the force sensor to measure contact forces in multiple ranges is effected by the change in temperature of the shape memory alloy. The heating and cooling system functions to place the shape memory alloy of the load cell in either a low temperature, low strength phase for measuring small contact forces, or a high temperature, high strength phase for measuring large contact forces. Once the load cell is in the desired phase, the strain sensing system is utilized to obtain the applied contact force. The temperature monitoring system is utilized to ensure that the shape memory alloy is in one phase or the other.

  11. Periodic Discrete Energy for Long-Range Potentials

    E-Print Network [OSTI]

    D. P. Hardin; E. B. Saff; Brian Simanek

    2014-12-11

    We consider periodic energy problems in Euclidean space with a special emphasis on long-range potentials that cannot be defined through the usual infinite sum. One of our main results builds on more recent developments of Ewald summation to define the periodic energy corresponding to a large class of long-range potentials. Two particularly interesting examples are the logarithmic potential and the Riesz potential when the Riesz parameter is smaller than the dimension of the space. For these examples, we use analytic continuation methods to provide concise formulas for the periodic kernel in terms of the Epstein Hurwitz Zeta function. We apply our energy definition to deduce several properties of the minimal energy including the asymptotic order of growth and the distribution of points in energy minimizing configurations as the number of points becomes large. We conclude with some detailed calculations in the case of one dimension, which shows the utility of this approach.

  12. Long Range Dependence of Point Processes, with Queueing Examples

    E-Print Network [OSTI]

    Vesilo, Rein

    var \\Gamma P n i=1 Y i \\Delta n = 1: (1:2) Within the context of `standard' queueing models with a renewal arrival process and i.i.d. service times, we show in x2 that when the input process is renewal: (1:3) We note that a renewal process, which can never be LRiD, can exhibit long range count

  13. Device for imaging scenes with very large ranges of intensity

    DOE Patents [OSTI]

    Deason, Vance Albert (Idaho Falls, ID)

    2011-11-15

    A device for imaging scenes with a very large range of intensity having a pair of polarizers, a primary lens, an attenuating mask, and an imaging device optically connected along an optical axis. Preferably, a secondary lens, positioned between the attenuating mask and the imaging device is used to focus light on the imaging device. The angle between the first polarization direction and the second polarization direction is adjustable.

  14. Hot Springs Metropolitan Planning Organization 2030 Long Range Transportation Plan 

    E-Print Network [OSTI]

    Hot Springs Metropolitan Planning Organization

    2005-11-03

    of Mountain Pine Hot Springs Village The Greater Hot Springs Chamber of Commerce The Arkansas State Highway and Transportation Department In Cooperation With United States Department of Transportation Federal Highway Administration Federal Transit... Administration 2030 Long Range Transportation Plan for the Hot Springs Area Metropolitan Planning Organization This LRTP has been funded with federal Metropolitan Planning (PL) funds through the Federal Highway Administration, Section 5303 funds...

  15. The Long-Range Transportation Plan for Central Arkansas 

    E-Print Network [OSTI]

    Metroplan Metropolitan Planning Organization

    2010-03-24

    ......................................... 16-8 Map 17-1 - Preferred Growth Concept ........................................................................................................................ 17-2 Map 17-2 - Freeway Capacity Improvements... ...............................................................................................................................15/21 METRO 2030.2 Long-Range Transportation Plan Update vi Table of Contents n Adopted March 24, 2010 METRO 2030.2 List of Maps 9-1 ITS Applications on the Freeway Network within Central Arkansas ..................................9/2 9...

  16. Frequency of Feeding Protein Supplement to Range Cattle. 

    E-Print Network [OSTI]

    Melton, A. A.; Riggs, J. K.

    1964-01-01

    /ment To Range Cattle f~~~~ AGRICULTURAL EXPE-RIMENT STATION, R. E. Patterson, Director E \\&'wintering Hereford heifers and cows were supplementally fed cottonseed cake on pasture... in the Davis Mountain area of Texas during four winters, 1958-62. The accompanying feeding schedules were used. Two pounds per head daily the first year and 3 pounds daily the last 3 years. Seven pounds per head on Tuesdays and Satur- days during...

  17. Horizontal film balance having wide range and high sensitivity

    DOE Patents [OSTI]

    Abraham, B.M.; Miyano, K.; Ketterson, J.B.

    1981-03-05

    A thin-film, horizontal balance instrument is provided for measuring surface tension (surface energy) of thin films suspended on a liquid substrate. The balance includes a support bearing and an optical feedback arrangement for wide-range, high sensitivity measurements. The force on the instrument is balanced by an electromagnet, the current through the magnet providing a measure of the force applied to the instrument. A novel float construction is also disclosed.

  18. Horizontal film balance having wide range and high sensitivity

    DOE Patents [OSTI]

    Abraham, Bernard M. (Oak Park, IL); Miyano, Kenjiro (Downers Grove, IL); Ketterson, John B. (Evanston, IL)

    1983-01-01

    A thin-film, horizontal balance instrument is provided for measuring surface tension (surface energy) of thin films suspended on a liquid substrate. The balance includes a support bearing and an optical feedback arrangement for wide-range, high sensitivity measurements. The force on the instrument is balanced by an electromagnet, the current through the magnet providing a measure of the force applied to the instrument. A novel float construction is also disclosed.

  19. Horizontal film balance having wide range and high sensitivity

    DOE Patents [OSTI]

    Abraham, B.M.; Miyano, K.; Ketterson, J.B.

    1983-11-08

    A thin-film, horizontal balance instrument is provided for measuring surface tension (surface energy) of thin films suspended on a liquid substrate. The balance includes a support bearing and an optical feedback arrangement for wide-range, high sensitivity measurements. The force on the instrument is balanced by an electromagnet, the current through the magnet providing a measure of the force applied to the instrument. A novel float construction is also disclosed. 5 figs.

  20. Lysozyme Protein Solution with an Intermediate Range Order Structure

    SciTech Connect (OSTI)

    Liu, Yun [National Institute of Standards and Technology (NIST); Porcar, L. [National Institute of Standards and Technology (NIST); Chen, Wei-Ren [ORNL; Chen, Jinhong [Memorial Sloan-Kettering Cancer Center; Falus, Peter [ORNL; Fratini, Emiliano [University of Florence; Faraone, Antonio [National Institute of Standards and Technology (NIST); Baglioni, P [University of Florence

    2011-01-01

    The formation of equilibrium clusters has been studied in both a prototypical colloidal system and protein solutions. The appearance of a low-Q correlation peak in small angle scattering patterns of lysozyme solution was attributed to the cluster-cluster correlation. Consequently, the presence of long-lived clusters has been established. By quantitatively analyzing both the SANS (small angle neutron scattering) and NSE (neutron spin echo) data of lysozyme solution using statistical mechanics models, we conclusively show in this paper that the appearance of a low-Q peak is not a signature of the formation of clusters. Rather, it is due to the formation of an intermediate range order structure governed by a short-range attraction and a long-range repulsion. We have further studied dynamic features of a sample with high enough concentration at which clusters are formed in solution. From the estimation of the mean square displacement by using short-time and long-time diffusion coefficient measured by NSE and NMR, we find that these clusters are not permanent but have a finite lifetime longer than the time required to diffuse over a distance of a monomer diameter.

  1. The ORNL Surplus Facilities Management Program Long Range Plan

    SciTech Connect (OSTI)

    Myrick, T.E.

    1984-09-01

    The Surplus Facilities Management Program (SFMP) at Oak Ridge National Laboratory (ORNL) is part of the Department of Energy`s (DOE) National SFMP, administered by the Richland Operations Office. This program was established to provide for the management of DOE surplus radioactively contaminated facilities from the end of their operating life until final facility disposition is completed. As part of this program, the ORNL SFMP oversees some 76 individual surplus facilities, ranging in complexity from abandoned waste storage tanks to large experimental reactors. The ORNL SFMP has prepared this Long Range Plan to outline the long-term management strategy for those facilities included in the program. The primary objective of this plan are to: (1) develop a base of information for each ORNL SFMP facility, (2) conduct preliminary decommissioning analyses to identify feasible alternatives, (3) assess the current and future risk of each facility, (4) establish a priority list for the decommissioning projects, and (5) integrate the individual project costs and schedules into an overall program schedule and cost estimate for the ORNL site. The Long Range Plan also provides an overview of the ORNL SFMP management structure, specifies the decommissioning criteria to be employed, and identifies special technical problems, research and development needs, and special facilities and equipment that may be required for decommissioning operations.

  2. Scaling properties in the production range of shear dominated flows

    E-Print Network [OSTI]

    C. M. Casciola; P. Gualtieri; B. Jacob; R. Piva

    2005-02-22

    Recent developments in turbulence are focused on the effect of large scale anisotropy on the small scale statistics of velocity increments. According to Kolmogorov, isotropy is recovered in the large Reynolds number limit as the scale is reduced and, in the so-called inertial range, universal features -namely the scaling exponents of structure functions - emerge clearly. However this picture is violated in a number of cases, typically in the high shear region of wall bounded flows. The common opinion ascribes this effect to the contamination of the inertial range by the larger anisotropic scales, i.e. the residual anisotropy is assumed as a weak perturbation of an otherwise isotropic dynamics. In this case, given the rotational invariance of the Navier-Stokes equations, the isotropic component of the structure functions keeps the same exponents of isotropic turbulence. This kind of reasoning fails when the anisotropic effects are strong as in the production range of shear dominated flows. This regime is analyzed here by means of both numerical and experimental data for a homogeneous shear flow. A well defined scaling behavior is found to exist, with exponents which differ substantially from those of classical isotropic turbulence. Contrary to what predicted by the perturbation approach, such a deep alteration concerns the isotropic sector itself. The general validity of these results is discussed in the context of turbulence near solid walls, where more appropriate closure models for the coarse grained Navier-Stokes equations would be advisable.

  3. Noise pair velocity and range echo location system

    DOE Patents [OSTI]

    Erskine, D.J.

    1999-02-16

    An echo-location method for microwaves, sound and light capable of using incoherent and arbitrary waveforms of wide bandwidth to measure velocity and range (and target size) simultaneously to high resolution is disclosed. Two interferometers having very long and nearly equal delays are used in series with the target interposed. The delays can be longer than the target range of interest. The first interferometer imprints a partial coherence on an initially incoherent source which allows autocorrelation to be performed on the reflected signal to determine velocity. A coherent cross-correlation subsequent to the second interferometer with the source determines a velocity discriminated range. Dithering the second interferometer identifies portions of the cross-correlation belonging to a target apart from clutter moving at a different velocity. The velocity discrimination is insensitive to all slowly varying distortions in the signal path. Speckle in the image of target and antenna lobing due to parasitic reflections is minimal for an incoherent source. An arbitrary source which varies its spectrum dramatically and randomly from pulse to pulse creates a radar elusive to jamming. Monochromatic sources which jigger in frequency from pulse to pulse or combinations of monochromatic sources can simulate some benefits of incoherent broadband sources. Clutter which has a symmetrical velocity spectrum will self-cancel for short wavelengths, such as the apparent motion of ground surrounding target from a sidelooking airborne antenna. 46 figs.

  4. Noise pair velocity and range echo location system

    DOE Patents [OSTI]

    Erskine, David J. (Oakland, CA)

    1999-01-01

    An echo-location method for microwaves, sound and light capable of using incoherent and arbitrary waveforms of wide bandwidth to measure velocity and range (and target size) simultaneously to high resolution. Two interferometers having very long and nearly equal delays are used in series with the target interposed. The delays can be longer than the target range of interest. The first interferometer imprints a partial coherence on an initially incoherent source which allows autocorrelation to be performed on the reflected signal to determine velocity. A coherent cross-correlation subsequent to the second interferometer with the source determines a velocity discriminated range. Dithering the second interferometer identifies portions of the cross-correlation belonging to a target apart from clutter moving at a different velocity. The velocity discrimination is insensitive to all slowly varying distortions in the signal path. Speckle in the image of target and antenna lobing due to parasitic reflections is minimal for an incoherent source. An arbitrary source which varies its spectrum dramatically and randomly from pulse to pulse creates a radar elusive to jamming. Monochromatic sources which jigger in frequency from pulse to pulse or combinations of monochromatic sources can simulate some benefits of incoherent broadband sources. Clutter which has a symmetrical velocity spectrum will self-cancel for short wavelengths, such as the apparent motion of ground surrounding target from a sidelooking airborne antenna.

  5. Canmet hydrocracking handles wide range of heavy crudes

    SciTech Connect (OSTI)

    Waugh, R.J.; Chambers, L.W.; Menzies, M.A.; Patmore, D.J.

    1983-03-01

    The track record of successful or realistic projections within industry over recent years has not exactly been outstanding. It almost seems that as the tools and methods that are available become more sophisticated, the less effective they are because of our inability to predict major events and their adverse impact on otherwise realistic projections. Crude oil sources, gravity and prices coupled with product type, demand and quality have all been affected. One thing that one can say with reasonable certainty is that there is no apparent reason to assume that the scene will stabilize in the near or mid-term future. Thus, the refiner is faced with continuing uncertainty as to crude source and product demand. He, therefore, has need to maintain flexibility in being able to process as wide a range of crudes and to produce as wide a range of products as possible. This paper postulates that the CANMET Hydrocracking Process can assist in achieving a greater degree of flexibility in refinery operation through its ability to handle a wide range of heavy feedstocks. The authors report new yield data for heavy feeds and the status of the previously announced demonstration unit. The unit is being designed on the basis of extensive data developed at the CANMET and Petro Canada laboratories in Ottawa and Calgary, Alberta, respectively. The paper concludes with a suggested modular application of CANMET hydrocracking to Athabasca Tar Sands development.

  6. Bonding energies and long-range order in the trialuminides

    SciTech Connect (OSTI)

    Sparks, C.J.; Specht, E.D.; Ice, G.E.; Zschack, P.; Schneibel, J.

    1990-01-01

    The degree of long-range order in the trialuminides is determined by X-ray powder diffraction techniques. Long-range order exists to their melting points. For the binary trialuminides Al{sub 3}Ti, Al{sub 73}Ti{sub 27}, and Al{sub 3}Sc, the degree of long-range order is nearly perfect and is a measure of the lack of mixing of the aluminum atoms onto the sublattice occupied by either Ti or Sc. A calculation of the bond energy between neighboring pairs of atoms from the ordering (melting) temperature is made following the Bragg-Williams mean field theory approach. These bond energies compare favorably with more sophisticated calculations. Bond energies are found to be larger than the energy difference between the crystal structure forms DO{sub 22}, Ll{sub 2}, and DO{sub 23}, and therefore, more relevant to understanding the mechanical and chemical behavior of the trialuminides. Ordering or melting temperatures of these intermetallics reflect the strong Al-metal near-neighbor pair potentials and may provide insights to their brittle properties. 11 refs., 2 figs., 2 tabs.

  7. Constraints on New Gravitylike Forces in the Nanometer Range

    E-Print Network [OSTI]

    Kamiya, Y; Tani, M; Kim, G N; Komamiya, S

    2015-01-01

    We report on a new constraint on gravitylike short-range forces, in which the interaction charge is mass, obtained by measuring the angular distribution of 5 A neutrons scattering off atomic xenon gas. Around 10^7 scattering events were collected at the 40 m small angle neutron scattering beam line located at the HANARO research reactor of the Korean Atomic Energy Research Institute. The extracted coupling strengths of new forces in the Yukawa-type parametrization are g^2 = (0.2 \\pm 6.8 \\pm 2.0) \\times 10^-15 GeV^2 and g^2 = (-5.3 \\pm 9.0 + 2.7 -2.8) \\times 10^-17 GeV^2 for interaction ranges of 0.1 and 1.0 nm, respectively. These strengths correspond to 95% confidence level limits of g^2 < (1.4 \\pm 0.2) \\times 10^-14 GeV^-2 and g^2 < (1.3 \\pm 0.2) \\times 10^-16 GeV^-2, improving the current limits for interaction ranges between 4 and 0.04 nm by a factor of up to 10.

  8. Constraints on New Gravitylike Forces in the Nanometer Range

    E-Print Network [OSTI]

    Y. Kamiya; K. Itagami; M. Tani; G. N. Kim; S. Komamiya

    2015-04-09

    We report on a new constraint on gravitylike short-range forces, in which the interaction charge is mass, obtained by measuring the angular distribution of 5 A neutrons scattering off atomic xenon gas. Around 10^7 scattering events were collected at the 40 m small angle neutron scattering beam line located at the HANARO research reactor of the Korean Atomic Energy Research Institute. The extracted coupling strengths of new forces in the Yukawa-type parametrization are g^2 = (0.2 \\pm 6.8 \\pm 2.0) \\times 10^-15 GeV^2 and g^2 = (-5.3 \\pm 9.0 + 2.7 -2.8) \\times 10^-17 GeV^2 for interaction ranges of 0.1 and 1.0 nm, respectively. These strengths correspond to 95% confidence level limits of g^2 < (1.4 \\pm 0.2) \\times 10^-14 GeV^-2 and g^2 < (1.3 \\pm 0.2) \\times 10^-16 GeV^-2, improving the current limits for interaction ranges between 4 and 0.04 nm by a factor of up to 10.

  9. Impacts of two best management practices on Pb weathering and leachability in shooting range soils

    E-Print Network [OSTI]

    Ma, Lena

    to minimize the adverse impacts, especially in pistol/rifle ranges because of increased total Pb content-old shooting range (Cao et al. 2003a). There are two types of shooting ranges: pistol/rifle ranges using lead

  10. Large dynamic range diagnostics for high current electron LINACs

    SciTech Connect (OSTI)

    Evtushenko, Pavel [JLAB

    2013-11-01

    The Jefferson Lab FEL driver accelerator - Energy Recovery Linac has provided a beam with average current of up to 9 mA and beam energy of 135 MeV. The high power beam operations have allowed developing and testing methods and approaches required to set up and tune such a facility simultaneously for the high beam power and high beam quality required for high performance FEL operations. In this contribution we briefly review this experience and outline problems that are specific to high current - high power non-equilibrium linac beams. While the original strategy for beam diagnostics and tuning have proven to be quite successful, some shortcomings and unresolved issues were also observed. The most important issues are the non-equilibrium (non-Gaussian) nature of the linac beam and the presence of small intensity - large amplitude fraction of the beam a.k.a. beam halo. Thus we also present a list of the possible beam halo sources and discuss possible mitigations means. We argue that for proper understanding and management of the beam halo large dynamic range (>10{sup 6}) transverse and longitudinal beam diagnostics can be used. We also present results of transverse beam profile measurements with the dynamic range approaching 10{sup 5} and demonstrate the effect the increased dynamic range has on the beam characterization, i.e., emittance and Twiss parameters measurements. We also discuss near future work planned in this field and where the JLab FEL facility will be used for beam tests of the developed of new diagnostics.

  11. Large dynamic range diagnostics for high current electron LINACs

    SciTech Connect (OSTI)

    Evtushenko, P., E-mail: Pavel.Evtushenko@jlab.org [Thomas Jefferson National Accelerator Facility 12000 Jefferson Avenue, Newport News, VA 23606 (United States)

    2013-11-07

    The Jefferson Lab FEL driver accelerator - Energy Recovery Linac has provided a beam with average current of up to 9 mA and beam energy of 135 MeV. The high power beam operations have allowed developing and testing methods and approaches required to set up and tune such a facility simultaneously for the high beam power and high beam quality required for high performance FEL operations. In this contribution we briefly review this experience and outline problems that are specific to high current - high power non-equilibrium linac beams. While the original strategy for beam diagnostics and tuning have proven to be quite successful, some shortcomings and unresolved issues were also observed. The most important issues are the non-equilibrium (non-Gaussian) nature of the linac beam and the presence of small intensity - large amplitude fraction of the beam a.k.a. beam halo. Thus we also present a list of the possible beam halo sources and discuss possible mitigations means. We argue that for proper understanding and management of the beam halo large dynamic range (>10{sup 6}) transverse and longitudinal beam diagnostics can be used. We also present results of transverse beam profile measurements with the dynamic range approaching 10{sup 5} and demonstrate the effect the increased dynamic range has on the beam characterization, i.e., emittance and Twiss parameters measurements. We also discuss near future work planned in this field and where the JLab FEL facility will be used for beam tests of the developed of new diagnostics.

  12. Weapons of Mass Destruction Technology Evaluation and Training Range

    SciTech Connect (OSTI)

    Kevin Larry Young

    2009-05-01

    The Idaho National Laboratory (INL) has a long history for providing technology evaluation and training for military and other federal level Weapons of Mass Destruction (WMD) response agencies. Currently there are many federal organizations and commercial companies developing technologies related to detecting, assessing, mitigating and protecting against hazards associated with a WMD event. Unfortunately, very few locations exist within the United States where WMD response technologies are realistically field tested and evaluated using real chemical, biological, radiological, nuclear and explosive materials. This is particularly true with biological and radiological hazards. Related to this lack of adequate WMD, multi-hazard technology testing capability is the shortage of locations where WMD response teams can train using actual chemical, biological, and radiological material or highly realistic simulates. In response to these technology evaluation and training needs, the INL has assembled a consortium of subject matter experts from existing programs and identified dedicated resources for the purpose of establishing an all-hazards, WMD technology evaluation and training range. The author describes the challenges associated with creating the all-hazards WMD technology evaluation and training range and lists the technical, logistical and financial benefits of an all-hazards technology evaluation and training range. Current resources and capabilities for conducting all-hazard technology evaluation and training at the INL are identified. Existing technology evaluation and training programs at the INL related to radiological, biological and chemical hazards are highlighted, including successes and lessons learned. Finally, remaining gaps in WMD technology evaluation and training capabilities are identified along with recommendations for closing those gaps.

  13. Renewable Energy Opportunities at White Sands Missile Range, New Mexico

    SciTech Connect (OSTI)

    Chvala, William D.; Solana, Amy E.; States, Jennifer C.; Warwick, William M.; Weimar, Mark R.; Dixon, Douglas R.

    2008-09-01

    The document provides an overview of renewable resource potential at White Sands Missile Range (WSMR) based primarily upon analysis of secondary data sources supplemented with limited on-site evaluations. The effort was funded by the U.S. Army Installation Management Command (IMCOM) as follow-on to the 2005 DoD Renewable Energy Assessment. This effort focuses on grid-connected generation of electricity from renewable energy sources and also ground source heat pumps (GSHPs) for heating and cooling buildings, as directed by IMCOM.

  14. A single-chip real-Time range finder 

    E-Print Network [OSTI]

    Chen, Sicheng

    2004-09-30

    of global focus currents measured for all 12 rows when testing board2 was put 210cm away with f -stop =1:4. : 119 73 Formation of defocused image on a vertical plane. ::::::::::: 132 xviii FIGURE Page 74 Formation of defocused image on a tilted plane... precision with low cost and excellent speed per- formance in short-to-medium range coverage. Therefore, it is particularly useful for collision avoidance. v To my parents and dear wife vi ACKNOWLEDGMENTS First of all I would like to express my sincere...

  15. 1994 site environmental report, Tonopah Test Range, Tonopah, Nevada

    SciTech Connect (OSTI)

    Culp, T. [Sandia National Labs., Albuquerque, NM (United States); Forston, W. [Kirk-Mayer, Inc., Albuquerque, NM (United States)

    1995-09-01

    This report summarizes the environmental surveillance activities conducted by Sandia National Laboratories, the US Environmental Protection Agency, and Kirk-Mayer, Inc., for the Tonopah Test Range operated by Sandia National Laboratories. Sandia National Laboratories` responsibility for environmental surveillance results extends to those activities performed by Sandia National Laboratories or under its direction. Results from other environmental surveillance activities are included to provide a measure of completeness in reporting. Other environmental compliance programs such as the National Environmental Policy Act of 1969, environmental permits, and environmental restoration and waste management programs are also included in this report, prepared for the US Department of Energy (DOE) in compliance with DOE Order 5400. 1.

  16. INEL D&D long-range plan

    SciTech Connect (OSTI)

    Buckland, R.J.; Kenoyer, D.J.; LaBuy, S.A.

    1995-09-01

    This Long-Range Plan presents the Decontamination and Dismantlement (D&D) Program planning status for facilities at the Idaho National Engineering Laboratory (INEL). The plan provides a general description of the D&D Program objectives, management criteria, and policy; discusses current activities; and documents the INEL D&D Program cost and schedule estimate projections for the next 15 years. Appendices are included that provide INEL D&D project historical information, a comprehensive descriptive summary of each current D&D surplus facility, and a summary database of all INEL contaminated facilities awaiting or undergoing the facility transition process.

  17. Chaos synchronization in long-range coupled map lattices

    E-Print Network [OSTI]

    C. Anteneodo; A. M. Batista; R. L. Viana

    2004-01-22

    We investigate the synchronization phenomenon in coupled chaotic map lattices where the couplings decay with distance following a power-law. Depending on the lattice size, the coupling strength and the range of the interactions, complete chaos synchronization may be attained. The synchronization domain in parameter space can be analytically delimited by means of the condition of negativity of the largest transversal Lyapunov exponent. Here we analyze in detail the role of all the system parameters in the ability of the lattice to achieve complete synchronization, testing analytical results with the outcomes of numerical experiments.

  18. On the Range of Validity of the Dipole Picture

    E-Print Network [OSTI]

    Carlo Ewerz; Andreas von Manteuffel; Otto Nachtmann

    2008-04-15

    We derive correlated bounds on ratios of deep inelastic structure functions from the dipole picture of photon-hadron scattering at high energies. In particular we consider ratios of the longitudinal structure function, the total structure function and the charm part of the latter. We also consider ratios of total structure functions taken at the same energy but at three different photon virtualities. It is shown that by confronting these bounds with experimental data we can significantly constrain the range of validity of the dipole picture.

  19. 1993 site environmental report Tonopah Test Range, Tonopah, Nevada

    SciTech Connect (OSTI)

    Culp, T.; Howard, D.; McClellan, Y.

    1994-10-01

    This report summarizes the environmental surveillance activities conducted by Sandia National Laboratories, the US Environmental Protection Agency, and Reynolds Electrical and Engineering Company for the Tonopah Test Range operated by Sandia National Laboratories. Sandia National Laboratories` responsibility for environmental monitoring results extend to those activities performed by Sandia National Laboratories or under its direction. Results from other environmental monitoring activities are included to provide a measure of completeness in reporting. Other environmental compliance programs such as the National Environmental Policy Act of 1969, environmental permits, and environmental restoration and waste management programs are also included in this report, prepared for the US Department of Energy in compliance with DOE Order 5400.1.

  20. A Wide Range Neutron Detector for Space Nuclear Reactor Applications

    SciTech Connect (OSTI)

    Nassif, Eduardo; Sismonda, Miguel; Matatagui, Emilio; Pretorius, Stephan

    2007-01-30

    We propose here a versatile and innovative solution for monitoring and controlling a space-based nuclear reactor that is based on technology already proved in ground based reactors. A Wide Range Neutron Detector (WRND) allows for a reduction in the complexity of space based nuclear instrumentation and control systems. A ground model, predecessor of the proposed system, has been installed and is operating at the OPAL (Open Pool Advanced Light Water Research Reactor) in Australia, providing long term functional data. A space compatible Engineering Qualification Model of the WRND has been developed, manufactured and verified satisfactorily by analysis, and is currently under environmental testing.

  1. Seismicity of the Coso Range, California | 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 QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS Report UrlNM-bRenewableSMUDSectional Modelof the Coso Range,

  2. Innovative static spectropolarimeter concept for wide spectral ranges: tolerancing study

    E-Print Network [OSTI]

    Pertenais, Martin; Parès, Laurent; Petit, Pascal

    2015-01-01

    Developing an efficient and robust polarimeter for wide spectral ranges and space applications is a main issue in many projects. As part of the UVMag consortium created to develop UV facilities in space (e.g. the Arago mission proposed to ESA), we are studying an innovative concept of polarimeter that is robust, simple, and efficient on a wide spectral range. The idea, based on the article by Sparks et al. (2012), is to use polarization scramblers to create a spatial modulation of the polarization. Along the height of the wedges of the scramblers, the thickness of the birefringent material crossed by the light, and thus the retardance, vary continuously. This variation creates an intensity modulation of the light related to the entrance polarization state. Analyzing this modulation with a linear polarizer, and dispersing the light spectrally in the orthogonal spatial direction, enables the measurement of the full Stokes vector over the entire spectrum. This determination is performed with a single-shot measur...

  3. Finite-range model potentials for resonant interactions

    E-Print Network [OSTI]

    Bimalendu Deb

    2015-12-04

    We show that it is possible to model two-body resonant interactions at low energy with a class of finite-range potentials based on the methods of Jost and Kohn. These potentials are expressed in terms of the effective range $r_0$ and the $s$-wave scattering length $a_s$. We derive continuum solutions of these potentials. By writing $V_{\\pm}(r) = V_{0}(r) + V_{\\pm}^{\\epsilon}(r)$, where the sign +(-) refers to positive(negative) scattering length, $ V_{0}(r)$ is of the form of P\\"{o}schl-Teller potential and $V_{\\pm}^{\\epsilon}$ is expressed as a power series of the small parameter $\\epsilon = (\\sqrt{1 - 2 r_0/a_s})^{-1} - 1 $ when $a_s$ is large, we derive Green function of $V_{0}(r)$. Using the Green function, solutions of $V_{\\pm}(r)$ for $|a_s| >\\!> r_0$ can be obtained numerically by treating $V_{\\pm}^{\\epsilon}(r)$as a perturbation. We describe the threshold behavior of scattering phase shift for $V_{0}(r)$. This study may be important for developing a better understanding of physics of strongly interacting ultracold atomic gases with tunable interactions.

  4. Changes in diurnal temperature range and national cereal yields

    SciTech Connect (OSTI)

    Lobell, D

    2007-04-26

    Models of yield responses to temperature change have often considered only changes in average temperature (Tavg), with the implicit assumption that changes in the diurnal temperature range (DTR) can safely be ignored. The goal of this study was to evaluate this assumption using a combination of historical datasets and climate model projections. Data on national crop yields for 1961-2002 in the 10 leading producers of wheat, rice, and maize were combined with datasets on climate and crop locations to evaluate the empirical relationships between Tavg, DTR, and crop yields. In several rice and maize growing regions, including the two major nations for each crop, there was a clear negative response of yields to increased DTR. This finding reflects a nonlinear response of yields to temperature, which likely results from greater water and heat stress during hot days. In many other cases, the effects of DTR were not statistically significant, in part because correlations of DTR with other climate variables and the relatively short length of the time series resulted in wide confidence intervals for the estimates. To evaluate whether future changes in DTR are relevant to crop impact assessments, yield responses to projected changes in Tavg and DTR by 2046-2065 from 11 climate models were estimated. The mean climate model projections indicated an increase in DTR in most seasons and locations where wheat is grown, mixed projections for maize, and a general decrease in DTR for rice. These mean projections were associated with wide ranges that included zero in nearly all cases. The estimated impacts of DTR changes on yields were generally small (<5% change in yields) relative to the consistently negative impact of projected warming of Tavg. However, DTR changes did significantly affect yield responses in several cases, such as in reducing US maize yields and increasing India rice yields. Because DTR projections tend to be positively correlated with Tavg, estimates of yields under extreme warming scenarios were particularly affected by including DTR (up to 10%). Finally, based on the relatively poor performance of climate models in reproducing the magnitude of past DTR trends, it is possible that future DTR changes and associated yield responses will exceed the ranges considered here.

  5. MAGNETIC HELICITY IN THE DISSIPATION RANGE OF STRONG IMBALANCED TURBULENCE

    SciTech Connect (OSTI)

    Markovskii, S. A.; Vasquez, Bernard J. E-mail: bernie.vasquez@unh.edu

    2013-05-01

    Hybrid numerical simulations of freely decaying two-dimensional turbulence are presented. The background magnetic field is perpendicular to the simulation plane, which eliminates linear kinetic Alfven waves from the system. The net magnetic helicity of the initial fluctuations at large scales is zero. The turbulence is set to be imbalanced in the sense that the net cross-helicity is not zero. As the turbulence evolves, it develops nonzero magnetic helicity at smaller scales, in the proton kinetic range. In the quasi-steady state of evolution, the magnetic helicity spectrum has a peak consistent with the solar wind observations. The peak position depends on the plasma beta and correlates with a sharp decline of the cross-helicity spectrum.

  6. Constant power speed range extension of surface mounted PM motors

    DOE Patents [OSTI]

    Lawler, Jack Steward (Knoxville, TN); Bailey, John Milton (Knoxville, TN)

    2001-01-01

    A circuit and method for controlling a rotating machine (11) in the constant horsepower range above base speed uses an inverter (15) having SCR's (T1-T6) connected in series with the primary commutation switches (Q1-Q6) to control turn off of the primary commutation switches and to protect the primary commutation switches from faults. The primary commutation switches (Q1-Q6) are controlled by a controller (14), to fire in advance or after a time when the back emf equals the applied voltage, and then to turn off after a precise dwell time, such that suitable power is developed at speeds up to at least six times base speed.

  7. Laser-Ranging Long Baseline Differential Atom Interferometers for Space

    E-Print Network [OSTI]

    Chiow, Sheng-wey; Yu, Nan

    2015-01-01

    High sensitivity differential atom interferometers are promising for precision measurements in science frontiers in space, including gravity field mapping for Earth science studies and gravitational wave detection. We propose a new configuration of twin atom interferometers connected by a laser ranging interferometer (LRI-AI) to provide precise information of the displacements between the two AI reference mirrors and a means to phase-lock the two independent interferometer lasers over long distances, thereby further enhancing the feasibility of long baseline differential atom interferometers. We show that a properly implemented LRI-AI can achieve equivalent functionality to the conventional differential atom interferometer measurement system. LRI-AI isolates the laser requirements for atom interferometers and for optical phase readout between distant locations, thus enabling optimized allocation of available laser power within a limited physical size and resource budget. A unique aspect of LRI-AI also enables...

  8. Method for detection and imaging over a broad spectral range

    DOE Patents [OSTI]

    Yefremenko, Volodymyr (Westmont, IL); Gordiyenko, Eduard (Westmont, IL); Pishko, legal representative, Olga (Kharkov, UA); Novosad, Valentyn (Chicago, IL); Pishko, deceased; Vitalii (Westmont, IL)

    2007-09-25

    A method of controlling the coordinate sensitivity in a superconducting microbolometer employs localized light, heating or magnetic field effects to form normal or mixed state regions on a superconducting film and to control the spatial location. Electron beam lithography and wet chemical etching were applied as pattern transfer processes in epitaxial Y--Ba--Cu--O films. Two different sensor designs were tested: (i) a 3 millimeter long and 40 micrometer wide stripe and (ii) a 1.25 millimeters long, and 50 micron wide meandering-like structure. Scanning the laser beam along the stripe leads to physical displacement of the sensitive area, and, therefore, may be used as a basis for imaging over a broad spectral range. Forming the superconducting film as a meandering structure provides the equivalent of a two-dimensional detector array. Advantages of this approach are simplicity of detector fabrication, and simplicity of the read-out process requiring only two electrical terminals.

  9. eta-Nucleon Scattering Length and Effective Range uncertainties

    E-Print Network [OSTI]

    A. M. Green; S. Wycech

    2005-06-28

    The coupled eta-N, pi-N, gamma-N, 2pi-N system is described by a K-matrix method. The parameters in this model are adjusted to get an optimal fit to pi-N-->pi-N, pi-N-->eta-N, gamma-N-->pi-N and gamma-N-->eta-N data in an energy range of about 100 MeV or so each side of the eta-threshold. Compared with our earlier analysis, we now utilize recent Crystal Ball data. However, the outcome confirms our previous result that the eta-nucleon scattering length (a) is large with a value of 0.91(6)+i0.27(2) fm.

  10. 1998 Annual Site Environmental Report Tonopah Test Range, Nevada

    SciTech Connect (OSTI)

    Duncan, D.K.; Fink, C.H.; Sanchez, R.V.

    1999-09-01

    Sandia National Laboratories (SNL) operates the Tonopah Test Range (TTR) for the Department of Energy (DOE) Weapons Ordnance Program. This annual report (calendar year 1998) summarizes the compliance status to environmental regulations applicable at the site including those statutes that govern air and water quality, waste management cleanup of contaminated areas, control of toxic substances, and adherence to requirements as related to the National Environmental Policy Act (NEPA). In compliance with DOE orders, SNL also conducts environmental surveillance for radiological and nonradiological contaminants. SNL's responsibility for environmental surveillance at TTR extends only to those areas where SNL activities are carried out. Annual radiological and nonradiological routine releases and unplanned releases (occurrences) are also summarized. This report has been prepared in accordance with DOE Order 5400.1, General Environmental Protection Program (DOE 1990a).

  11. BRAHMS (Broad Range Hadron Magnetic Spectrometer) Figures and Data Archive

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The BRAHMS experiment was designed to measure charged hadrons over a wide range of rapidity and transverse momentum to study the reaction mechanisms of the relativistic heavy ion reactions at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory and the properties of the highly excited nuclear matter formed in these reactions. The experiment took its first data during the RHIC 2000 year run and completed data taking in June 2006. The BRAHMS archive makes publications available and also makes data and figures from those publications available as separate items. See also the complete list of publications, multimedia presentations, and related papers at http://www4.rcf.bnl.gov/brahms/WWW/publications.html

  12. Method and apparatus for making absolute range measurements

    DOE Patents [OSTI]

    Earl, Dennis D. (Knoxville, TN); Allison, Stephen W. (Knoxville, TN); Cates, Michael R. (Oak Ridge, TN); Sanders, Alvin J. (Knoxville, TN)

    2002-09-24

    This invention relates to a method and apparatus for making absolute distance or ranging measurements using Fresnel diffraction. The invention employs a source of electromagnetic radiation having a known wavelength or wavelength distribution, which sends a beam of electromagnetic radiation through a screen at least partially opaque at the wavelength. The screen has an aperture sized so as to produce a Fresnel diffraction pattern. A portion of the beam travels through the aperture to a detector spaced some distance from the screen. The detector detects the central intensity of the beam as well as a set of intensities displaced from a center of the aperture. The distance from the source to the target can then be calculated based upon the known wavelength, aperture radius, and beam intensity.

  13. Solid oxide fuel cell operable over wide temperature range

    DOE Patents [OSTI]

    Baozhen, Li (Essex Junction, VT); Ruka, Roswell J. (Pittsburgh, PA); Singhal, Subhash C. (Murrysville, PA)

    2001-01-01

    Solid oxide fuel cells having improved low-temperature operation are disclosed. In one embodiment, an interfacial layer of terbia-stabilized zirconia is located between the air electrode and electrolyte of the solid oxide fuel cell. The interfacial layer provides a barrier which controls interaction between the air electrode and electrolyte. The interfacial layer also reduces polarization loss through the reduction of the air electrode/electrolyte interfacial electrical resistance. In another embodiment, the solid oxide fuel cell comprises a scandia-stabilized zirconia electrolyte having high electrical conductivity. The scandia-stabilized zirconia electrolyte may be provided as a very thin layer in order to reduce resistance. The scandia-stabilized electrolyte is preferably used in combination with the terbia-stabilized interfacial layer. The solid oxide fuel cells are operable over wider temperature ranges and wider temperature gradients in comparison with conventional fuel cells.

  14. Tunnel and Subsurface Void Detection and Range to Target Measurement

    SciTech Connect (OSTI)

    Phillip B. West

    2009-06-01

    Engineers and technicians at the Idaho National Laboratory invented, designed, built and tested a device capable of detecting and measuring the distance to, an underground void, or tunnel. Preliminary tests demonstrated positive detection of, and range to, a void thru as much as 30 meters of top-soil earth. Device uses acoustic driving point impedance principles pioneered by the Laboratory for well-bore physical properties logging. Data receipts recorded by the device indicates constructive-destructive interference patterns characteristic of acoustic wave reflection from a downward step-change in impedance mismatch. Prototype tests demonstrated that interference patterns in receipt waves could depict the patterns indicative of specific distances. A tool with this capability can quickly (in seconds) indicate the presence and depth/distance of a void or tunnel. Using such a device, border security and military personnel can identify threats of intrusion or weapons caches in most all soil conditions including moist and rocky.

  15. Inertial range scaling in numerical turbulence with hyperviscosity

    E-Print Network [OSTI]

    Nils Erland L. Haugen; Axel Brandenburg

    2004-10-26

    Numerical turbulence with hyperviscosity is studied and compared with direct simulations using ordinary viscosity and data from wind tunnel experiments. It is shown that the inertial range scaling is similar in all three cases. Furthermore, the bottleneck effect is approximately equally broad (about one order of magnitude) in these cases and only its height is increased in the hyperviscous case--presumably as a consequence of the steeper decent of the spectrum in the hyperviscous subrange. The mean normalized dissipation rate is found to be in agreement with both wind tunnel experiments and direct simulations. The structure function exponents agree with the She-Leveque model. Decaying turbulence with hyperviscosity still gives the usual t^{-1.25} decay law for the kinetic energy, and also the bottleneck effect is still present and about equally strong.

  16. Design of 3D eye-safe middle range vibrometer

    SciTech Connect (OSTI)

    Polulyakh, Valeriy; Poutivski, Iouri

    2014-05-27

    Laser Doppler Vibrometer and Range Meter (3D-MRV) is designed for middle range distances [1–100 meters]. 3D-MRV combines more than one laser in one device for a simultaneous real time measuring the distance and movement of the targets. The first laser has a short pulse (t?30psec) and low energy (E?200nJ) for distance measurement and the second one is a CW (continuous wave) single frequency laser for the velocity measurement with output power (P?30mW). Both lasers perform on the eye-safe wavelength 1.5 ?m. 3D-MRV uses the same mono-static optical transmitting and receiving channel for both lasers including an output telescope and a scanning angular system. 3D-MRV has an optical polarization switch to combine linear polarized laser beams from two lasers into one optical channel. The laser beams from both lasers by turns illuminate the target and the scattered laser radiation is collected by the telescope on a photo detector. The electrical signal from photo detector is used for measuring the distance to the target and its movement. For distance measurement the time of flight method is employed. For targets movement the optical heterodyne method is employed. The received CW laser radiation is mixed on a photo detector with the frequency-shifted laser radiation that is taken from CW laser and passed through an acousto-optic cell. The electrical signal from a photo detector on the difference frequency and phase has information about movement of the scattered targets. 3D-MVR may be used for the real time picturing of vibration of the extensive targets like bridges or aircrafts.

  17. Thrust faulting in Temblor Range, Kern County, California

    SciTech Connect (OSTI)

    Simonson, R.R.

    1991-02-01

    Surface and subsurface studies confirm the presence of overthrusting in the Temblor Range between Gonyer Canyon and Recruit Pass. In the subsurface, three wells have penetrated the Cree fault, the Hudbay Cree' No. 1 (7,300 ft), the Frantzen Oil Company Cree' No. 1 (5,865 ft) and the Arco Cree Fee' 1A well (5,915 ft). Below the fault, 25 to 35{degree} of westerly dips on the west flank of the sub-thrust Phelps anticline are encountered. The McDonald section below the fault is comprised of siliceous fractured shale which contains live oil and gas showings. A drill-stem test of the interval from 8,247 to 8,510 ft in the Frantzen well resulted in a recovery of 1,200 ft clean 34{degree} oil and 40 MCF per day gas. The shut in pressure was 3,430 lb, which is a normal hydrostatic pressure common to the producing structures in the southern San Joaquin Valley. The equivalent of this interval has produced over 7,000 bbl of oil in the Arco Cree' 1A well. The Arco Cree Fee' No. 1A well crossed the axis of the Phelps Anticline as indicated by good dipmeter and bottomed in Lower Zemorrian at 14,512 ft total depth. This well was not drilled deep enough to reach the Point of Rocks Sand and did not test the gas showings in the lower Miocene section. In the Gonyer Canyon area, subsurface evidence indicated conditions are similar to those in the Cree area because a large structure is present below a thrust fault. It is believed that significant accumulations will be found beneath thrust faults in the eastern part of the Temblor Range where conditions are similar to those that were instrumental in forming fields such as the Elk Hills, B. V. Hills, Belgian Anticline and others.

  18. Long-range coherent energy transport in Photosystem II

    E-Print Network [OSTI]

    Jan J. J. Roden; Doran I. G. Bennett; K. Birgitta Whaley

    2015-01-27

    We simulate the long-range inter-complex electronic energy transfer in Photosystem II -- from the antenna complex, via a core complex, to the reaction center -- using a non-Markovian (ZOFE) quantum master equation description that allows us to quantify the electronic coherence involved in the energy transfer. We identify the pathways of the energy transfer in the network of coupled chromophores, using a description based on excitation probability currents. We investigate how the energy transfer depends on the initial excitation -- localized, coherent initial excitation versus delocalized, incoherent initial excitation -- and find that the energy transfer is remarkably robust with respect to such strong variations of the initial condition. To explore the importance of vibrationally enhanced transfer and to address the question of optimization in the system parameters, we vary the strength of the coupling between the electronic and the vibrational degrees of freedom. We find that the original parameters lie in a (broad) region that enables optimal transfer efficiency, and that the energy transfer appears to be very robust with respect to variations in the vibronic coupling. Nevertheless, vibrationally enhanced transfer appears to be crucial to obtain a high transfer efficiency. We compare our quantum simulation to a "classical" rate equation based on a modified-Redfield/generalized-F\\"orster description that was previously used to simulate energy transfer dynamics in the entire Photosystem II complex, and find very good agreement between quantum and rate-equation simulation of the overall energy transfer dynamics.

  19. Magnitude-range brightness variations of overactive K giants

    E-Print Network [OSTI]

    Oláh, K; K?vári, Zs; Granzer, T; Strassmeier, K G; Kriskovics, L; Vida, K

    2014-01-01

    We study three representative, overactive spotted K giants (IL Hya, XX Tri, and DM UMa) known to exhibit V-band light variations between 0.65-1.05 mags. Our aim is to find the origin of their large brightness variation. We employ long-term phase-resolved multicolor photometry, mostly from automatic telescopes, covering 42 yr for IL Hya, 28 yr for XX Tri, and 34 yr for DM UMa. For one target, IL Hya, we present a new Doppler image from NSO data taken in late 1996. Effective temperatures for our targets are determined from all well-sampled observing epochs and are based on a V-I_C color-index calibration. The effective temperature change between the extrema of the rotational modulation for IL Hya and XX Tri is in the range 50-200 K. The bolometric flux during maximum of the rotational modulation, i.e., the least spotted states, varied by up to 39% in IL Hya and up to 54% in XX Tri over the course of our observations. We emphasize that for IL Hya this is just about half of the total luminosity variation that can...

  20. High Dynamic Range Beam Imaging with Two Simultaneously Sampling CCDs

    SciTech Connect (OSTI)

    Evtushenko, Pavel [JLAB; Douglas, David R. [JLAB; Legg, Robert A. [JLAB; Tennant, Christopher D. [JLAB

    2013-05-01

    Transverse beam profile measurement with sufficiently high dynamic range (HDR) is a key diagnostic to measure the beam halo, understand its sources and evolution. In this contribution we describe our initial experience with the HDR imaging of the electron beam at the JLab FEL. On contrary to HDR measurements made with wire scanners in counting mode, which provide only two or three 1D projections of transverse beam distribution, imaging allows to measure the distribution itself. That is especially important for non-equilibrium beams in the LINACs. The measurements were made by means of simultaneous imaging with two CCD sensors with different exposure time. Two images are combined then numerically in to one HDR image. The system works as an online tool providing HDR images at 4 Hz. An optically polished YAG:Ce crystal with the thickness of 100 {micro}m was used for the measurements. When tested with a laser beam images with the DR of about 10{sup 5} were obtained. With the electron beam the DR was somewhat smaller due to the limitations in the time structure of the tune-up beam macro pulse.

  1. High Dynamic Range Beam Imaging with Two Simultaneously Sampling CCDs

    SciTech Connect (OSTI)

    Evtushenko, Pavel E. [JLAB; Douglas, David R. [JLAB

    2013-06-01

    Transverse beam profile measurement with sufficiently high dynamic range (HDR) is a key diagnostic to measure the beam halo, understand its sources and evolution. In this contribution we describe our initial experience with the HDR imaging of the electron beam at the JLab FEL. On contrary to HDR measurements made with wire scanners in counting mode, which provide only two or three 1D projections of transverse beam distribution, imaging allows to measure the distribution itself. That is especially important for non-equilibrium beams in the LINACs. The measurements were made by means of simultaneous imaging with two CCD sensors with different exposure time. Two images are combined then numerically in to one HDR image. The system works as an online tool providing HDR images at 4 Hz. An optically polished YAG:Ce crystal with the thickness of 100 {micro}m was used for the measurements. When tested with a laser beam images with the DR of about 10{sup 5} were obtained. With the electron beam the DR was somewhat smaller due to the limitations in the time structure of the tune-up beam macro pulse.

  2. Method for increasing the dynamic range of mass spectrometers

    DOE Patents [OSTI]

    Belov, Mikhail; Smith, Richard D.; Udseth, Harold R.

    2004-09-07

    A method for enhancing the dynamic range of a mass spectrometer by first passing a sample of ions through the mass spectrometer having a quadrupole ion filter, whereupon the intensities of the mass spectrum of the sample are measured. From the mass spectrum, ions within this sample are then identified for subsequent ejection. As further sampling introduces more ions into the mass spectrometer, the appropriate rf voltages are applied to a quadrupole ion filter, thereby selectively ejecting the undesired ions previously identified. In this manner, the desired ions may be collected for longer periods of time in an ion trap, thus allowing better collection and subsequent analysis of the desired ions. The ion trap used for accumulation may be the same ion trap used for mass analysis, in which case the mass analysis is performed directly, or it may be an intermediate trap. In the case where collection is an intermediate trap, the desired ions are accumulated in the intermediate trap, and then transferred to a separate mass analyzer. The present invention finds particular utility where the mass analysis is performed in an ion trap mass spectrometer or a Fourier transform ion cyclotron resonance mass spectrometer.

  3. Method and apparatus for making absolute range measurements

    DOE Patents [OSTI]

    Allison, Stephen W. (Knoxville, TN); Cates, Michael R. (Oak Ridge, TN); Key, William S. (Knoxville, TN); Sanders, Alvin J. (Knoxville, TN); Earl, Dennis D. (Knoxville, TN)

    1999-01-01

    This invention relates to a method and apparatus for making absolute distance or ranging measurements using Fresnel diffraction. The invention employs a source of electromagnetic radiation having a known wavelength or wavelength distribution, which sends a beam of electromagnetic radiation through an object which causes it to be split (hereinafter referred to as a "beamsplitter"), and then to a target. The beam is reflected from the target onto a screen containing an aperture spaced a known distance from the beamsplitter. The aperture is sized so as to produce a Fresnel diffraction pattern. A portion of the beam travels through the aperture to a detector, spaced a known distance from the screen. The detector detects the central intensity of the beam. The distance from the object which causes the beam to be split to the target can then be calculated based upon the known wavelength, aperture radius, beam intensity, and distance from the detector to the screen. Several apparatus embodiments are disclosed for practicing the method embodiments of the present invention.

  4. Method and apparatus for making absolute range measurements

    DOE Patents [OSTI]

    Allison, S.W.; Cates, M.R.; Key, W.S.; Sanders, A.J.; Earl, D.D.

    1999-06-22

    This invention relates to a method and apparatus for making absolute distance or ranging measurements using Fresnel diffraction. The invention employs a source of electromagnetic radiation having a known wavelength or wavelength distribution, which sends a beam of electromagnetic radiation through an object which causes it to be split (hereinafter referred to as a beam splitter''), and then to a target. The beam is reflected from the target onto a screen containing an aperture spaced a known distance from the beam splitter. The aperture is sized so as to produce a Fresnel diffraction pattern. A portion of the beam travels through the aperture to a detector, spaced a known distance from the screen. The detector detects the central intensity of the beam. The distance from the object which causes the beam to be split to the target can then be calculated based upon the known wavelength, aperture radius, beam intensity, and distance from the detector to the screen. Several apparatus embodiments are disclosed for practicing the method embodiments of the present invention. 9 figs.

  5. Optical nutation in the exciton range of spectrum

    SciTech Connect (OSTI)

    Khadzhi, P. I. [Academy of Sciences of Moldova, Institute of Applied Physics (Moldova, Republic of)] [Academy of Sciences of Moldova, Institute of Applied Physics (Moldova, Republic of); Vasiliev, V. V., E-mail: vasscorp@mail.ru [Taras Shevchenko Transnistria State University (Moldova, Republic of)

    2013-08-15

    Optical nutation in the exciton range of spectrum is studied in the mean field approximation taking into account exciton-photon and elastic exciton-exciton interactions. It is shown that the features of nutation development are determined by the initial exciton and photon densities, the resonance detuning, the nonlinearity parameter, and the initial phase difference. For nonzero initial exciton and photon concentrations, three regimes of temporal evolution of excitons and photons exist: periodic conversion of excitons to photons and vice versa, aperiodic conversion of photons to excitons, and the rest regime. In the rest regime, the initial exciton and photon densities are nonzero and do not change with time. The oscillation amplitudes and periods of particle densities determined by the system parameters are found. The exciton self-trapping and photon trapping appearing in the system at threshold values of the nonlinearity parameter were predicted. As this parameter increases, the oscillation amplitudes of the exciton and photon densities sharply change at the critical value of the nonlinearity parameter. These two phenomena are shown to be caused by the elastic exciton-exciton interaction, resulting in the dynamic concentration shift of the exciton level.

  6. ORNL long-range environmental and waste management plan

    SciTech Connect (OSTI)

    Baldwin, J.S.; Bates, L.D.; Brown, C.H.; Easterday, C.A.; Hill, L.G.; Kendrick, C.M.; McNeese, L.E.; Myrick, T.E.; Payne, T.L.; Pepper, C.E.; Robinson, S.M.; Rohwer, P.S.; Scanlan, T.F.; Smith, M.A.; Stratton, L.E.; Trabalka, J.R.

    1989-09-01

    This report, the ORNL Long-Range Environmental and Waste Management Plan, is the annual update in a series begun in fiscal year 1985. Its primary purpose is to provide a thorough and systematic planning document to reflect the continuing process of site assessment, strategy development, and planning for the current and long-term control of environmental issues, waste management practices, and remedial action requirements. The document also provides an estimate of the resources required to implement the current plan. This document is not intended to be a budget document; it is, however, intended to provide guidance to both Martin Marietta Energy Systems, Inc., and the US Department of Energy (DOE) management as to the near order of magnitude of the resources (primarily funding requirements) and the time frame required to execute the strategy in the present revision of the plan. As with any document of this nature, the near-term (one to three years) part of the plan is a pragmatic assessment of the current program and ongoing capital projects and reflects the efforts perceived to be necessary to comply with all current state and federal regulations and DOE orders. It also should be in general agreement with current budget (funding) requests and obligations for these immediate years. 55 figs., 72 tabs.

  7. Hellsgate Winter Range : Wildlife Mitigation Project. Final Environmental Assessment.

    SciTech Connect (OSTI)

    United States. Bonneville Power Administration.

    1995-03-01

    Bonneville Power Administration (BPA) proposes to fund the Hellsgate Winter Range Wildlife Mitigation Project (Project) in a cooperative effort with the Colville Confederated Tribes and the Bureau of Indian Affairs (BIA). The proposed action would allow the sponsors to secure property and conduct wildlife management activities within the boundaries of the Colville Indian Reservation. This Final Environmental Assessment (EA) examines the potential environmental effects of acquiring and managing property for wildlife and wildlife habitat within a large project area. This area consists of several separated land parcels, of which 2,000 hectares (4,943 acres) have been purchased by BPA and an additional 4,640 hectares (11,466 acres) have been identified by the Colville Confederated Tribes for inclusion in the Project. Four proposed activities (habitat protection, habitat enhancement, operation and maintenance, and monitoring and evaluation) are analyzed. The proposed action is intended to meet the need for mitigation of wildlife and wildlife habitat that was adversely affected by the construction of Grand Coulee and Chief Joseph Dams and their reservoirs.

  8. Wide range modeling study of dimethyl ether oxidation

    SciTech Connect (OSTI)

    Pitz, W.J.; Marinov, N.M.; Westbrook, C.K.; Dagaut, P.; Boettner, J-C; Cathonnet, M.

    1997-04-01

    A detailed chemical kinetic model has been used to study dimethyl ether (DME) oxidation over a wide range of conditions. Experimental results obtained in a jet-stirred reactor (JSR) at I and 10 atm, 0.2 < 0 < 2.5, and 800 < T < 1300 K were modeled, in addition to those generated in a shock tube at 13 and 40 bar, 0 = 1.0 and 650 :5 T :5 1300 K. The JSR results are particularly valuable as they include concentration profiles of reactants, intermediates and products pertinent to the oxidation of DME. These data test the Idnetic model severely, as it must be able to predict the correct distribution and concentrations of intermediate and final products formed in the oxidation process. Additionally, the shock tube results are very useful, as they were taken at low temperatures and at high pressures, and thus undergo negative temperature dependence (NTC) behavior. This behavior is characteristic of the oxidation of saturated hydrocarbon fuels, (e.g. the primary reference fuels, n-heptane and iso- octane) under similar conditions. The numerical model consists of 78 chemical species and 336 chemical reactions. The thermodynamic properties of unknown species pertaining to DME oxidation were calculated using THERM.

  9. Biomass burning contribution to black carbon in the Western United States Mountain Ranges

    E-Print Network [OSTI]

    2011-01-01

    the Western United States Mountain Ranges Y. H. Mao 1,2 , Q.the Western United States Mountain Ranges applications in USthe Western United States Mountain Ranges biomass burning in

  10. Low-cost conformable storage to maximize vehicle range

    SciTech Connect (OSTI)

    Graham, R.P.

    1998-01-01

    Liquefied petroleum gas (LPG) and compressed natural gas (CNG) are currently the leading fuel contenders for converting vehicles from gasoline and diesel to alternative fuels. Two factors that inhibit conversion are additional vehicle costs and reduced range compared to gasoline. In overcoming these barriers, a key element of the alternative fuel system becomes the storage tank for these pressurized fuels. Using cylindrical pressure vessels is the conventional approach, but they do not package well in the available vehicle volume. Thiokol Corporation has developed and is now producing a conformable (non-cylindrical) aluminum storage system for LPG vans. This system increases fuel storage in a given rectangular envelope. The goal of this project was to develop the technology for a lower cost conformable tank made of injection-molded plastic. Much of the cost of the aluminum conformable tank is in the fabrication because several weld seams are required. The injection-molding process has the potential to greatly reduce the fabrication costs. The requirements of a pressurized fuel tank on a vehicle necessitate the proper combination of material properties. Material selection and tank design must be optimized for maximum internal volume and minimum material use to be competitive with other technologies. The material and the design must also facilitate the injection-molding process. Prototype tanks must be fabricated to reveal molding problems, prove solutions, and measure results. In production, efficient fabrication will be key to making these tanks cost competitive. The work accomplished during this project has demonstrated that conformable LPG tanks can be molded with thermoplastics. However, to achieve a competitive tank, improvements are needed in the effective material strength. If these improvements can be made, molded plastics should produce a lower cost tank that can store more LPG on a vehicle than conventional cylinders.

  11. How to Find the CSUFresno San Joaquin Experimental Range You can use this list of landmarks to find the CSUFresno San Joaquin Experimental Range. See also the

    E-Print Network [OSTI]

    Ringwald, Frederick A.

    How to Find the CSUFresno San Joaquin Experimental Range You can use this list of landmarks to find the CSUFresno San Joaquin Experimental Range. See also the accompanying map. The Range is about a half Freeway 41 North to leave Fresno. After crossing the San Joaquin River: Continue North on 41. Highway 41

  12. Automated registration of 3D-range with 2D-color images: an overview

    E-Print Network [OSTI]

    Stamos, Ioannis

    extraction 3D feature extraction Partial Model 2D feature extraction Complete Model Range-Range Registration adjust parameters on sitep Cannot handle historical photographs #12;Automated methods One 2D imageStamos)) Input: Range ImagesInput: Range Images 3D Line Extraction3D Line Extraction Input: 2D ImagesInput: 2D

  13. Range Cattle Research and Education Center Research Report RC-2001-1

    E-Print Network [OSTI]

    Ma, Lena

    Range Cattle Research and Education Center Research Report RC-2001-1 January 2001 CLIMATOLOGICAL REPORT 2000 Range Cattle Research and Education Center R. S. Kalmbacher Professor, IFAS, Range Cattle herbicides, control water, and to supplement cattle on pasture or range. Weather conditions influence

  14. Range Cattle Research and Education Center Research Report RC-2004-1

    E-Print Network [OSTI]

    Ma, Lena

    Range Cattle Research and Education Center Research Report RC-2004-1 February 2004 CLIMATOLOGICAL REPORT 2003 Range Cattle Research and Education Center R. S. Kalmbacher Professor, IFAS, Range Cattle herbicides, control water, and to supplement cattle on pasture or range. Weather conditions influence

  15. Range Cattle Research and Education Center Research Report RC-2002-1

    E-Print Network [OSTI]

    Ma, Lena

    Range Cattle Research and Education Center Research Report RC-2002-1 February 2002 CLIMATOLOGICAL REPORT 2001 Range Cattle Research and Education Center R. S. Kalmbacher Professor, IFAS, Range Cattle herbicides, control water, and to supplement cattle on pasture or range. Weather conditions influence

  16. Range Cattle Research and Education Center Research Report RC-2003-1

    E-Print Network [OSTI]

    Ma, Lena

    Range Cattle Research and Education Center Research Report RC-2003-1 February 2003 CLIMATOLOGICAL REPORT 2002 Range Cattle Research and Education Center R. S. Kalmbacher Professor, IFAS, Range Cattle herbicides, control water, and to supplement cattle on pasture or range. Weather conditions influence

  17. Magnetized Target Fusion: Input to the 35-yr Fusion Long-Range Electric Plan

    E-Print Network [OSTI]

    Magnetized Target Fusion: Input to the 35-yr Fusion Long-Range Electric Plan G. A. Wurden Fusion to the 35-yr Fusion Long-Range Electric Plan · Imagine a fusion concept where: · The plasma beta ranges from to the 35-yr Fusion Long-Range Electric Plan · MTF offers a uniquely different pathway to achieving

  18. 295JOURNAL OF RANGE MANAGEMENT53(3), May 2000 Cryptosporidium parvum is a fecal borne protozoan parasite

    E-Print Network [OSTI]

    Tate, Kenneth

    Teaching and Research Center, Tulare, Calif. 93274; range and pasture specialist, Agronomy and Range

  19. Space-resolved extreme ultraviolet spectroscopy free of high-energy neutral particle noise in wavelength range of 10–130 Å on the large helical device

    SciTech Connect (OSTI)

    Huang, Xianli; Morita, Shigeru; Oishi, Tetsutarou; Goto, Motoshi; National Institute for Fusion Science, Toki 509-5292 Gifu ; Dong, Chunfeng

    2014-04-15

    A flat-field space-resolved extreme ultraviolet (EUV) spectrometer system working in wavelength range of 10–130 Å has been constructed in the Large Helical Device (LHD) for profile measurements of bremsstrahlung continuum and line emissions of heavy impurities in the central column of plasmas, which are aimed at studies on Z{sub eff} and impurity transport, respectively. Until now, a large amount of spike noise caused by neutral particles with high energies (?180 keV) originating in neutral beam injection has been observed in EUV spectroscopy on LHD. The new system has been developed with an aim to delete such a spike noise from the signal by installing a thin filter which can block the high-energy neutral particles entering the EUV spectrometer. Three filters of 11 ?m thick beryllium (Be), 3.3 ?m thick polypropylene (PP), and 0.5 ?m thick polyethylene terephthalate (PET: polyester) have been examined to eliminate the spike noise. Although the 11 ?m Be and 3.3 ?m PP filters can fully delete the spike noise in wavelength range of ? ? 20 Å, the signal intensity is also reduced. The 0.5 ?m PET filter, on the other hand, can maintain sufficient signal intensity for the measurement and the spike noise remained in the signal is acceptable. As a result, the bremsstrahlung profile is successfully measured without noise at 20 Å even in low-density discharges, e.g., 2.9 × 10{sup 13} cm{sup ?3}, when the 0.5 ?m PET filter is used. The iron n = 3–2 L? transition array consisting of FeXVII to FeXXIV is also excellently observed with their radial profiles in wavelength range of 10–18 Å. Each transition in the L? array can be accurately identified with its radial profile. As a typical example of the method a spectral line at 17.62 Å is identified as FeXVIII transition. Results on absolute intensity calibration of the spectrometer system, pulse height and noise count analyses of the spike noise between holographic and ruled gratings and wavelength response of the used filters are also presented with performance of the present spectrometer system.

  20. Cross section standards for neutron-induced gamma-ray production in the MeV energy range.

    SciTech Connect (OSTI)

    Nelson, R. O. (Ronald O.); Fotiadis, N. (Nikolaos); Devlin, M. J. (Matthew J.); Becker, J. A. (John A.); Garrett, P. E. (Paul E.); Younes, W. (Walid)

    2004-01-01

    Gamma-ray cross section standards for neutron-induced reactions are important in enabling the accurate determination of absolute cross sections from relative measurements of gamma-ray production. In our work we observed a need for improvement in these standards. In particular there are large discrepancies between evaluations of the {sup nat}Fe(n,n{sub 1}'{gamma}) cross section for the 847-keV gamma ray. We have performed (1) absolute cross section measurements, (2) measurements relative to the {sup nat}Cr(n,n{sub 1}'{gamma}) 1434-keV gamma ray, and (3) comparisons using measured total and elastic scattering cross sections to refine our knowledge of the Fe cross section and the closely linked inelastic channel cross section for Fe. Calculation of integral tests of the cross section libraries may indicate that adjustment of the angular distributions of the neutron elastic and inelastic scattering may be needed.

  1. Marvell NanoLab Member login Lab Manual Contents MercuryWeb Berkeley Microlab Chapter 5.16

    E-Print Network [OSTI]

    Healy, Kevin Edward

    16 Non-MOS Poly-Silicon LPCVD Furnace (tystar16 - 386) 1.0 Title TYSTAR 16 Non-MOS Poly-Silicon LPCVD Furnace 2.0 Purpose Tystar16 is used to deposit poly-crystalline silicon film, doped with phosphorus or un. 3.0 Scope This chapter covers the general furnace description of TYSTAR 16, TYCOM and furnace

  2. 320 Herpetological Review 34(4), 2003 range = 17.028.7 mm; mean width = 11.6 mm, s = 0.73, range =

    E-Print Network [OSTI]

    Blouin-Demers, Gabriel

    320 Herpetological Review 34(4), 2003 range = 17.0­28.7 mm; mean width = 11.6 mm, s = 0.73, range = 10.5­12.5 mm). The third specimen collected in January is poorly preserved (IB 65538, 648 mm SVL, 150 mm TL) and had five oviductal eggs (mean length = 15.8 mm, s = 5.11, range = 10.0­ 22.2 mm; mean

  3. FLUCTUATION STUDIES IN THE ALFVEN WAVE RANGE OF FREQUENCIES IN THE TOKAPOLE II TOKAMAK

    E-Print Network [OSTI]

    Sprott, Julien Clinton

    FLUCTUATION STUDIES IN THE ALFVEN WAVE RANGE OF FREQUENCIES IN THE TOKAPOLE II TOKAMAK (Poster (7W;Abstract (modified) Fluctuation Studies in the Alfyen wave range of frequencies in the Tokapole I I Tokamak

  4. A Laser Range Scanner Designed for Minimum Calibration Complexity James Davis, Xing Chen

    E-Print Network [OSTI]

    Stanford University

    A Laser Range Scanner Designed for Minimum Calibration Complexity James Davis, Xing Chen Computer Graphics Lab, Stanford University {jedavis, xcchen}@graphics.stanford.edu Abstract Laser range scanners reduce the costs associated with calibration. 1 Introduction Laser triangulation scanners

  5. Reconciliation of local and long-range tilt correlations in underdoped...

    Office of Scientific and Technical Information (OSTI)

    and long-range tilt correlations in underdoped La2-xBaxCuO4(0 x 0.155) A long standing puzzle regarding the disparity of local and long range CuO octahedral tilt...

  6. Influencing managerial cognition and decisions using scenarios for long-range planning

    E-Print Network [OSTI]

    Phadnis, Shardul Sharad, 1978-

    2012-01-01

    This dissertation presents empirical findings related to two aspects of long-range planning: scenario planning as a planning method and cognition of planners. Long-range planning situations are encountered when designing ...

  7. A high dynamic range data acquisition system for a solid-state...

    Office of Scientific and Technical Information (OSTI)

    A high dynamic range data acquisition system for a solid-state electron electric dipole moment experiment Citation Details In-Document Search Title: A high dynamic range data...

  8. Fact #854 January 5, 2015 Driving Ranges for All-Electric Vehicles...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    on window stickers, the Mitsubishi i-MiEV has the shortest range (62 miles) while the Tesla Model S with an 85 kW-hr battery pack has a range of 265 miles. Of the 13 models...

  9. A light detection and ranging (lidar) study of the Sierra Nevada

    E-Print Network [OSTI]

    Phelps, Gary M. II

    2011-01-01

    metadata streams, ranging from large spatial data sets (e.g. , remote sensing products) to in situ sensor

  10. perspective: Causes and consequences of range size variation: the influence of traits, speciation, and extinction

    E-Print Network [OSTI]

    Vamosi, Steven M.; Vamosi, Jana C.

    2012-01-01

    M.W. (2004) Environmental causes for plant biodiversityISSN 1948-6596 perspective Causes and consequences of range

  11. Lead Transformation, Contamination,Lead Transformation, Contamination, and Remediation at Shooting Rangeand Remediation at Shooting Range

    E-Print Network [OSTI]

    Ma, Lena

    --yard pistol shooting rangesyard pistol shooting ranges Soil depths (cm) pH DOC (mg/kg) Total Pb (mg

  12. Qualitative real-time range extraction for preplanned scene partitioning using laser beam coding

    E-Print Network [OSTI]

    Rivlin, Ehud

    , and range from motion. Active sensing refers to techniques that impose structured energy sources, such asQualitative real-time range extraction for preplanned scene partitioning using laser beam coding 2005 Communicated by R. Davies Abstract This paper proposes a novel technique to extract range using

  13. Fusion of range and visual data for the extraction of scene structure information Haris Baltzakis

    E-Print Network [OSTI]

    Trahanias, Panos

    Fusion of range and visual data for the extraction of scene structure information Haris Baltzakis data is proposed. Data fusion is achieved by validating assumptions formed according to 2D range scans measurements in large angular fields and at very fast rates. The acquired range information is compact enough

  14. Phase Correction for Coherent Noise Reduction in Short-Range Radar Measurements

    E-Print Network [OSTI]

    Kansas, University of

    electromagnetic energy and geophysical media in a number of remote sensing applications. Unlike long-range and intermediate-range radar systems, the sensitivity of short-range radars is not limited by thermal noise method to account for variations in the phase of the systematic noise sources. This extends the noise

  15. PREDICTION OF SUBURBAN ENCROACHMENT ON THE ETHAN ALLEN FIRING RANGE AND CAMP JOHNSON

    E-Print Network [OSTI]

    Ramsey, R. Douglas

    PREDICTION OF SUBURBAN ENCROACHMENT ON THE ETHAN ALLEN FIRING RANGE AND CAMP JOHNSON CHITTENDEN Prediction of Suburban Encroachment on the Ethan Allen Firing Range and Camp Johnson, Chittenden County for many National Guard training installations. The Ethan Allen Firing Range and Camp Johnson, Vermont

  16. Creating Mountains out of Mole Hills: Automatic Identification of Hills and Ranges Using Morphometric Analysis

    E-Print Network [OSTI]

    1 Creating Mountains out of Mole Hills: Automatic Identification of Hills and Ranges Using that comprise them (that mountain ranges are a collection of clustered yet individually identifiable mountains for automatically discerning mountain ranges as well as the smaller hills that constitute them. A mountainous region

  17. Electric vehicles: How much range is required for a day's driving? Nathaniel S. Pearre a,

    E-Print Network [OSTI]

    Firestone, Jeremy

    Electric vehicles: How much range is required for a day's driving? Nathaniel S. Pearre a, , Willett online xxxx Keywords: Electric vehicle Plug-in vehicle Daily driving range Range requirement Trip timing require- ments of electric vehicles (EVs). We conservatively assume that EV drivers would not change

  18. Optimizing and Diversifying Electric Vehicle Driving Range for U.S. Drivers

    SciTech Connect (OSTI)

    Lin, Zhenhong [ORNL

    2014-01-01

    Properly determining the driving range is critical for accurately predicting the sales and social benefits of battery electric vehicles (BEVs). This study proposes a framework for optimizing the driving range by minimizing the sum of battery price, electricity cost, and range limitation cost referred to as the range-related cost as a measurement of range anxiety. The objective function is linked to policy-relevant parameters, including battery cost and price markup, battery utilization, charging infrastructure availability, vehicle efficiency, electricity and gasoline prices, household vehicle ownership, daily driving patterns, discount rate, and perceived vehicle lifetime. Qualitative discussion of the framework and its empirical application to a sample (N=36,664) representing new car drivers in the United States is included. The quantitative results strongly suggest that ranges of less than 100 miles are likely to be more popular in the BEV market for a long period of time. The average optimal range among U.S. drivers is found to be largely inelastic. Still, battery cost reduction significantly drives BEV demand toward longer ranges, whereas improvement in the charging infrastructure is found to significantly drive BEV demand toward shorter ranges. The bias of a single-range assumption and the effects of range optimization and diversification in reducing such biases are both found to be significant.

  19. ENGI 9420 7.03 -Half Range Fourier Series Page 7.12 7.03 Half-Range Fourier Series

    E-Print Network [OSTI]

    George, Glyn

    ENGI 9420 7.03 - Half Range Fourier Series Page 7.12 7.03 Half-Range Fourier Series A Fourier extension leads to a Fourier sine series: 1 sinn n n x f x b L where 0 2 sin , 1, 2, 3, L n n x b f x dx n L L An even extension leads to a Fourier cosine series: 0 1 cos 2 n n a n x

  20. Ultra-wideband radios for time-of-flight-ranging and network position estimation

    DOE Patents [OSTI]

    Hertzog, Claudia A. (Houston, TX); Dowla, Farid U. (Castro Valley, CA); Dallum, Gregory E. (Livermore, CA); Romero, Carlos E. (Livermore, CA)

    2011-06-14

    This invention provides a novel high-accuracy indoor ranging device that uses ultra-wideband (UWB) RF pulsing with low-power and low-cost electronics. A unique of the present invention is that it exploits multiple measurements in time and space for very accurate ranging. The wideband radio signals utilized herein are particularly suited to ranging in harsh RF environments because they allow signal reconstruction in spite of multipath propagation distortion. Furthermore, the ranging and positioning techniques discussed herein directly address many of the known technical challenges encountered in UWB localization regarding synchronization and sampling. In the method developed, noisy, corrupted signals can be recovered by repeating range measurements across a channel, and the distance measurements are combined from many locations surrounding the target in a way that minimizes the range biases associated to indirect flight paths and through-wall propagation delays.

  1. Long-range Fourier domain optical coherence tomography of the pediatric subglottis

    E-Print Network [OSTI]

    2015-01-01

    cat e/ijp o r l Long-range Fourier domain optical coherencechild remains intubated. Fourier domain optical coherencesec). Frequency, or ‘‘Fourier’’, domain swept source OCT (

  2. Range-Renewal Speed and Entropy for I.I.D Models

    E-Print Network [OSTI]

    Xin-Xing Chen; Jian-Sheng Xie; Jiangang Ying

    2013-05-24

    In this note the relation between the range-renewal speed and entropy for i.i.d. models is discussed.

  3. Evaluating Wildlife Corridor Linkages: Do Freeway Underpasses Connect the Peninsular and Transverse Mountain Ranges?

    E-Print Network [OSTI]

    Murphy, Michelle L.

    2011-01-01

    some lessons from mountain lions in Southern California.and J.L. Doherty. 1985. Managing mountain goats at a highwaythe Peninsular and Transverse Mountain Ranges? A Thesis

  4. The use of historical range and variability (HRV) in landscape management Robert E. Keane a,

    E-Print Network [OSTI]

    Wallin, David O.

    Review The use of historical range and variability (HRV) in landscape management Robert E. Keane a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1026 2. Quantifying HRV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1028 3. Applying HRV

  5. Comment on “Measurement of two- and three-nucleon short-range correlation probabilities in nuclei”

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

    Higinbotham, Douglas W.; Hen, Or

    2015-04-24

    Comment on 'Measurement of 2- and 3-nucleon short range correlation probabilities in nuclei' shows how the reported three-nucleon plateau was likely due to resolution effects.

  6. Scaling functions of two-neutron separation energies of $^{20}C$ with finite range potentials

    E-Print Network [OSTI]

    M. A. Shalchi; M. R. Hadizadeh; M. T. Yamashita; Lauro Tomio; T. Frederico

    2015-08-25

    The behaviour of an Efimov excited state is studied within a three-body Faddeev formalism for a general neutron-neutron-core system, where neutron-core is bound and neutron-neutron is unbound, by considering zero-ranged as well as finite-ranged two-body interactions. For the finite-ranged interactions we have considered a one-term separable Yamaguchi potential. The main objective is to study range corrections in a scaling approach, with focus in the exotic carbon halo nucleus $^{20}C$.

  7. Master Plant List for Texas Range and Pasture Plant Identification Contests 

    E-Print Network [OSTI]

    Ragsdale, Bobby

    2000-05-03

    Entrants in range and pasture plant identification contests will find this reference useful. It includes explanations of plant characteristics and a master list of plants....

  8. NREL Uses Fuel Cells to Increase the Range of Battery Electric Vehicles (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-01-01

    NREL analysis identifies potential cost-effective scenarios for using small fuel cell power units to increase the range of medium-duty battery electric vehicles.

  9. HeadLock: Wide-Range Head Pose Estimation for Low Resolution Video

    E-Print Network [OSTI]

    Roy, Deb

    HeadLock: Wide-Range Head Pose Estimation for Low Resolution Video Philip DeCamp B-Range Head Pose Estimation for Low Resolution Video by Philip DeCamp Submitted to the Program in Media Arts on data mining technologies to extract head pose information from low resolution video recordings. Head

  10. Long Range Evolution-based Path Planning for UAVs through Realistic Weather Environments

    E-Print Network [OSTI]

    Long Range Evolution-based Path Planning for UAVs through Realistic Weather Environments Juan Planning for UAVs through Realistic Weather Environments Juan Carlos Rubio Torroella Co range flights is pre- sented. The planner makes use of wind information from actual weather forecast

  11. Diurnal temperature range over the United States: A satellite view Donglian Sun,1

    E-Print Network [OSTI]

    Sun, Donglian

    Diurnal temperature range over the United States: A satellite view Donglian Sun,1 Rachel T. Pinker; published 4 March 2006. [1] Diurnal temperature range (DTR) is an important climate change index. Information on this parameter comes primarily from sparse and unevenly distributed observations of shelter air

  12. Central Limit Theorem for the Size of the Range of a Renewal Process

    E-Print Network [OSTI]

    Hitczenko, Pawel

    Central Limit Theorem for the Size of the Range of a Renewal Process Pawe l Hitczenko 1;2 ;3 Robin Subject classi#12;cation: 60K05, 60J10, 60F05 Running headline: CLT for the range of a renewal process 1 gn := fn Æ #1; #1; #1; Æ f 1 has been studied in various contexts. It models the coalescence

  13. Accurate profile extraction and mapping by intelligent processing of ultrasonic range

    E-Print Network [OSTI]

    Barshan, Billur

    intelligent processing of raw ultrasonic data. Ultrasonic sensors, when coupled with intelligent processingAccurate profile extraction and mapping by intelligent processing of ultrasonic range data B. Barshan A novel technique is described that employs intelligent processing of multiple ultrasonic range

  14. Long-Range Dependence: Now you see it, now Thomas Karagiannis Michalis Faloutsos Rudolf H. Riedi

    E-Print Network [OSTI]

    Riedi, Rudolf H.

    to make heavy use of novel concepts such as self-similarity and Long-Range Dependence (LRD). Despite engineering" approach: we observe the results of the estimators on a series of artificial and real sig- nals-range dependence. More specifi- cally, we test the estimators with three different types of data. · Synthetic data

  15. THE RISE OF MOUNTAIN RANGES AND THE EVOLUTION OF HUMANS: A CAUSAL RELATION?

    E-Print Network [OSTI]

    Baker, Andrew J.

    THE RISE OF MOUNTAIN RANGES AND THE EVOLUTION OF HUMANS: A CAUSAL RELATION? PETER MOLNAR' of essentially all major mountain ranges of the worl'd, albeit each with respect to a different frame, an evolution quantified well by an exponential increase in cranial capacity. Apparently, the rise of mountains

  16. Ecological and allometric determinants of home-range size for mountain lions (Puma concolor)

    E-Print Network [OSTI]

    Beier, Paul

    Ecological and allometric determinants of home-range size for mountain lions (Puma concolor) INTRODUCTION Mountain lions (Puma concolor) are distributed through- out much of California, including the Sierra Nevada mountains, Coastal Ranges, eastern Sierran deserts and suburban areas. Despite our

  17. NOTE ON THE OPTIMAL INTERCEPT TIME OF VESSELS TO A NONZERO RANGE

    E-Print Network [OSTI]

    Gander, Martin J.

    NOTE ON THE OPTIMAL INTERCEPT TIME OF VESSELS TO A NONZERO RANGE MARTIN J. GANDER \\Lambda Abstract. There is an even simpler solution to the optimal intercept problem of vessels to a nonzero range. Key words. intercept AMS subject classifications. 00A08 In [1] the authors consider the problem of a patrol vessel

  18. The E ect of Barriers on The Tidal Range in Yong Ming Tang

    E-Print Network [OSTI]

    interest in constructing tidal barrages, either to control the tide or to extract power. CorrespondinglyThe E ect of Barriers on The Tidal Range in Estuaries Yong Ming Tang Abstract Numerical simulations of the shallow water equations are used to study the e ect of topographic barriers on the tidal range

  19. Tectonic uplift, threshold hillslopes and denudation rates in a developing mountain range

    E-Print Network [OSTI]

    Tectonic uplift, threshold hillslopes and denudation rates in a developing mountain range Steven A uplift, threshold hillslopes, and denudation rates in a developing mountain range: Geology, v. 35, p. 743, denudation is controlled by the rate of tectonic uplift through the rate of channel incision and frequency

  20. Electronic excitations from a linear-response range-separated hybrid scheme

    E-Print Network [OSTI]

    Rebolini, Elisa; Toulouse, Julien

    2013-01-01

    We study linear-response time-dependent density-functional theory (DFT) based on the single-determinant range-separated hybrid (RSH) scheme, i.e. combining a long-range Hartree-Fock exchange kernel with a short-range DFT exchange-correlation kernel, for calculating electronic excitation energies of molecular systems. It is an alternative to the long-range correction (LC) scheme which has a standard full-range DFT correlation kernel instead of only a short-range one. We discuss the local-density approximation (LDA) to the short-range exchange-correlation kernel, and assess the performance of the linear-response RSH scheme for singlet-singlet and singlet-triplet valence and Rydberg excitations in the N2, CO, H2CO, C2H4, and C6H6 molecules, and for the first charge-transfer excitation in the C2H4-C2F4 dimer. The introduction of long-range HF exchange corrects the underestimation of charge-transfer and high-lying Rydberg excitation energies obtained with standard (semi)local density-functional approximations, but...

  1. February 1996, Circular 897 Molasses Supplements for Mature, Lactating Beef Cows Grazing Range

    E-Print Network [OSTI]

    Ma, Lena

    February 1996, Circular 897 Molasses Supplements for Mature, Lactating Beef Cows Grazing Range F. M during the winter is a problem that leads to poor reproduction. Supplementation of cows grazing range of mature, lactating cows supplemented with either molasses-urea or molasses-cottonseed meal-urea while

  2. Wood Products-Utilization Gen. Tech. Rep. PSW-100. Berkeley, CA. Pacific Southwest Forest and Range

    E-Print Network [OSTI]

    Wood Products-Utilization 231 #12;Gen. Tech. Rep. PSW-100. Berkeley, CA. Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture; 1987. Utilization products. California's native and exotic hardwoods offer a wide range of utilization opportunities

  3. SURVIVAL AND HOME RANGE CHARACTERISTICS OF MERRIAM'S TURKEY GOBBLERS IN THE SOUTHERN BLACK HILLS, SOUTH DAKOTA

    E-Print Network [OSTI]

    SURVIVAL AND HOME RANGE CHARACTERISTICS OF MERRIAM'S TURKEY GOBBLERS IN THE SOUTHERN BLACK HILLS;ii SURVIVAL AND HOME RANGE CHARACTERISTICS OF MERRIAM'S TURKEY GOBBLERS IN THE SOUTHERN BLACK l. I thank all fellow graduate students who helped trap turkeys and for making the office an enjoyable

  4. Historical Fire Regimes in Ponderosa Pine Forests of the Colorado Front Range, and

    E-Print Network [OSTI]

    Historical Fire Regimes in Ponderosa Pine Forests of the Colorado Front Range, and Recommendations scientific understanding of historical fire regimes in the forested landscapes of Colorado's Front Range and the Colorado-Wyoming border. This article focuses on forests in which ponderosa pine is a dominant or co

  5. 3D Multi-Field Multi-Scale Features From Range Data In Spacecraft Proximity Operations 

    E-Print Network [OSTI]

    Flewelling, Brien Roy

    2012-07-16

    . These methods exist for both active sensors such as Light Detection and Ranging(LIDAR) or laser RADAR(LADAR), and passive sensors such as CCD and CMOS camera systems. This dissertation presents a method for fusing time of flight(ToF) range data inherent...

  6. ON THE NUMERICAL RANGE OF A MATRIX TRANSLATED FROM THE GERMAN BY PAUL F. ZACHLIN

    E-Print Network [OSTI]

    Eindhoven, Technische Universiteit

    -7058, USA paul.zachlin@case.edu. Department of Mathematics and Computing Science, Eindhoven UniversityON THE NUMERICAL RANGE OF A MATRIX TRANSLATED FROM THE GERMAN BY PAUL F. ZACHLIN AND MICHIEL E by mathematicians who work in the area of numerical ranges, thus it is hoped that this translation may be useful

  7. Impact of long-range correlations on trend detection in total ozone

    E-Print Network [OSTI]

    Wirosoetisno, Djoko

    Impact of long-range correlations on trend detection in total ozone Article Published Version detection in total ozone. Journal of Geophysical Research, 112. D14307. ISSN 0148-0227 doi: 10.1029/2006JD of long-range correlations on trend detection in total ozone Dmitry I. Vyushin,1 Vitali E. Fioletov,2

  8. Higher Order Mode Absorption in TTF Modules in the Frequency Range of the 3rd

    E-Print Network [OSTI]

    1 Higher Order Mode Absorption in TTF Modules in the Frequency Range of the 3rd Dipole Band M-factors and R/Q values occur in the 3rd dipole band. The present work quantitatively analyses the fields and their damping in the frequency range of the 3rd dipole band (~2580 MHz). In our investigation we use an S

  9. Zeros of the partition function and pseudospinodals in long-range Ising models Natali Gulbahce

    E-Print Network [OSTI]

    Gould, Harvey

    , the isothermal sus- ceptibility in an lsing model diverges as a power law as the spinodal value of the magnetic, the susceptibility for a finite interaction range can be fit to a power law over a limited range of the scaling field , and the Domb-Dalton 9 version of the Ising model in which each spin interacts with its neighbors within a given

  10. The Range of Traded Option Prices Mark H.A. Davis

    E-Print Network [OSTI]

    The Range of Traded Option Prices Mark H.A. Davis Imperial College London and David G. Hobson Suppose we are given a set of prices of European call options over a finite range of strike prices conditions for the prices to be consistent with an arbitrage- free model (in which case the model can

  11. Design and Fabrication of a Long-range Surface Plasmon Polariton

    E-Print Network [OSTI]

    Weinfurter, Harald

    Design and Fabrication of a Long-range Surface Plasmon Polariton Wave Guide for near-infrared light Diplomarbeit von Johannes Trapp #12;#12;Design and Fabrication of a Long-range Surface Plasmon Polariton Wave I would like to thank Philipp Altpeter for his patience to explain to me the variety of machinery

  12. A polymer model with long-range interactions: analysis and applications to the chromatin structure

    E-Print Network [OSTI]

    Holcman, David

    A polymer model with long-range interactions: analysis and applications to the chromatin structure consists of the DNA and its hierarchy of interact- ing molecules that can be modeled as a complex polymer. To describe the chromatin dynamic, we develop and analyze here a polymer model that accounts for long range

  13. Range Cattle Research and Education Center March 2006 Research Report RC-2006-2

    E-Print Network [OSTI]

    Ma, Lena

    of rainfall, air temperature, evapo-transpiration, and solar radiation for 2005 obtained at the Range Cattle, and solar radiation for 2005, Range Cattle REC. January February March April Max Min Rain MJ/ Max Min Rain Research and Education Center (REC) Ona, Florida, and is compared to a 64-year summary of data collected

  14. Range Cattle Research and Education Center Research Report RC-2005-2

    E-Print Network [OSTI]

    Ma, Lena

    temperature, evapotranspiration, and solar radiation for 2004 obtained at the Range Cattle Research temperature, precipitation, and solar #12;radiation for 2004, Range Cattle REC. January February March April Weather Service standard gauge. Measurements reported here were taken at 0900 h, thus data on a given day

  15. Range Cattle Research and Education Center February 2007 Research Report RC-2007-1

    E-Print Network [OSTI]

    Ma, Lena

    of rainfall, air temperature, evapo-transpiration, and solar radiation for 2006 obtained at the Range Cattle and minimum temperature, precipitation, and solar radiation for 2006, Range Cattle REC. January February March Research and Education Center (REC) Ona, Florida, and is compared to a 65-year summary of data collected

  16. Range Cattle Research and Education Center April 2012 Research Report RC-2012-1

    E-Print Network [OSTI]

    Ma, Lena

    , and solar radiation for 2011 obtained at the Range Cattle Research and Education Center (REC), Ona, Florida and minimum temperature, precipitation, and solar radiation for 2011, Range Cattle REC. January February March, and is compared to a 70-year summary of rainfall data and a 69-year summary of temperature data collected from

  17. Range Cattle Research and Education Center February 2010 Research Report RC-2010-1

    E-Print Network [OSTI]

    Ma, Lena

    , and solar radiation for 2009 obtained at the Range Cattle Research and Education Center (REC), Ona, Florida and minimum temperature, precipitation, and solar radiation for 2009, Range Ca, and is compared to a 68-year summary of rainfall data and a 67-year summary of temperature data collected from

  18. Range Cattle Research and Education Center March 2011 Research Report RC-2011-1

    E-Print Network [OSTI]

    Ma, Lena

    , and solar radiation for 2010 obtained at the Range Cattle Research and Education Center (REC), Ona, Florida and minimum temperature, precipitation, and solar radiation for 2010, Range Cattle REC. Januar, and is compared to a 69-year summary of rainfall data and a 68-year summary of temperature data collected from

  19. Connection between effective-range expansion and nuclear vertex constant or asymptotic normalization coefficient

    E-Print Network [OSTI]

    R. Yarmukhamedov; D. Baye

    2011-02-08

    Explicit relations between the effective-range expansion and the nuclear vertex constant or asymptotic normalization coefficient (ANC) for the virtual decay $B\\to A+a$ are derived for an arbitrary orbital momentum together with the corresponding location condition for the ($A+a$) bound-state energy. They are valid both for the charged case and for the neutral case. Combining these relations with the standard effective-range function up to order six makes it possible to reduce to two the number of free effective-range parameters if an ANC value is known from experiment. Values for the scattering length, effective range, and form parameter are determined in this way for the $^{16}$O+$p$, $\\alpha+t$ and $\\alpha+^3$He collisions in partial waves where a bound state exists by using available ANCs deduced from experiments. The resulting effective-range expansions for these collisions are valid up to energies larger 5 MeV.

  20. A system to measure isomeric state half-lives in the 10 ns to 10 ?s range

    SciTech Connect (OSTI)

    Toufen, D. L.; Allegro, P. R. P.; Medina, N. H.; Oliveira, J. R. B.; Cybulska, E. W.; Seale, W. A.; Ribas, R. V.; Linares, R.; Silveira, M. A. G.

    2014-07-15

    The Isomeric State Measurement System (SISMEI) was developed to search for isomeric nuclear states produced by fusion-evaporation reactions. The SISMEI consists of 10 plastic phoswich telescopes, two lead shields, one NaI(Tl) scintillation detector, two Compton suppressed HPGe ?-ray detectors, and a cone with a recoil product catcher. The new system was tested at the 8 UD Pelletron tandem accelerator of the University of São Paulo with the measurement of two known isomeric states: {sup 54}Fe, 10{sup +} state (E = 6527.1 (11) keV, T{sub 1/2} = 364(7) ns) and the 5/2{sup +} state of {sup 19}F (E = 197.143 (4) keV, T{sub 1/2} = 89.3 (10) ns). The results indicate that the system is capable of identifying delayed transitions, of measuring isomeric state lifetimes, and of identifying the feeding transitions of the isomeric state through the delayed ?-? coincidence method. The measured half-life for the 10{sup +} state was T{sub 1/2} = 365(14) ns and for the 5/2{sup +} state, 100(36) ns.

  1. Alternative separation of exchange and correlation energies in range-separated density-functional perturbation theory

    E-Print Network [OSTI]

    Cornaton, Yann; Jensen, Hans Jørgen Aa; Fromager, Emmanuel

    2013-01-01

    An alternative separation of short-range exchange and correlation energies is used in the framework of second-order range-separated density-functional perturbation theory. This alternative separation was initially proposed by Toulouse et al. [Theor. Chem. Acc. 114, 305 (2005)] and relies on a long-range interacting wavefunction instead of the non-interacting Kohn-Sham one. When second-order corrections to the density are neglected, the energy expression reduces to a range-separated double-hybrid (RSDH) type of functional, RSDHf, where "f" stands for "full-range integrals" as the regular full-range interaction appears explicitly in the energy expression when expanded in perturbation theory. In contrast to usual RSDH functionals, RSDHf describes the coupling between long- and short-range correlations as an orbital-dependent contribution. Calculations on the first four noble-gas dimers show that this coupling has a significant effect on the potential energy curves in the equilibrium region, improving the accurac...

  2. Wide dynamic range neutron flux monitor having fast time response for the Large Helical Device

    SciTech Connect (OSTI)

    Isobe, M., E-mail: isobe@nifs.ac.jp; Takeiri, Y. [National Institute for Fusion Science, Toki 509-5292 (Japan); Department of Fusion Science, The Graduate University for Advanced Studies, Toki 509-5292 (Japan); Ogawa, K.; Miyake, H.; Hayashi, H.; Kobuchi, T. [National Institute for Fusion Science, Toki 509-5292 (Japan); Nakano, Y.; Watanabe, K.; Uritani, A. [Department of Materials, Physics and Energy Engineering, Nagoya University, Nagoya 464-8603 (Japan); Misawa, T. [Kyoto University Research Reactor Institute, Kumatori 590-0494 (Japan); Nishitani, T. [Japan Atomic Energy Agency, Rokkasho 039-3212 (Japan); Tomitaka, M.; Kumagai, T.; Mashiyama, Y.; Ito, D.; Kono, S. [Toshiba Corporation, Fuchu 183-8511 (Japan); Yamauchi, M. [Toshiba Nuclear Engineering Services Corporation, Yokohama 235-8523 (Japan)

    2014-11-15

    A fast time response, wide dynamic range neutron flux monitor has been developed toward the LHD deuterium operation by using leading-edge signal processing technologies providing maximum counting rate up to ?5 × 10{sup 9} counts/s. Because a maximum total neutron emission rate over 1 × 10{sup 16} n/s is predicted in neutral beam-heated LHD plasmas, fast response and wide dynamic range capabilities of the system are essential. Preliminary tests have demonstrated successful performance as a wide dynamic range monitor along the design.

  3. Photonic band gaps in three-dimensional network structures with short-range order

    SciTech Connect (OSTI)

    Liew, Seng Fatt; Noh, Heeso; Yang, Jin-Kyu; Schreck, Carl F.; Dufresne, Eric R.; O'Hern, Corey S.; Cao, Hui

    2011-12-15

    We present a systematic study of photonic band gaps (PBGs) in three-dimensional (3D) photonic amorphous structures (PASs) with short-range order. From calculations of the density of optical states (DOS) for PASs with different topologies, we find that tetrahedrally connected dielectric networks produce the largest isotropic PBGs. Local uniformity and tetrahedral order are essential to the formation of PBGs in PASs, in addition to short-range geometric order. This work demonstrates that it is possible to create broad, isotropic PBGs for vector light fields in 3D PASs without long-range order.

  4. Energy Impacts of Effective Range Hood Use for all U.S. Residential Cooking

    E-Print Network [OSTI]

    Logue, Jennifer M

    2014-01-01

    for the impact on consumer cost. Energy Impacts of EffectiveRange Hood Use, LBNL- Page 22 Figure 4 Site energy,source energy, and consumer cost savings compared to

  5. Example Procedures for Developing Acceptance-Range Criteria for BESTEST-EX

    SciTech Connect (OSTI)

    Ron Judkoff, Ben Polly, Marcus Bianchi

    2010-08-01

    This document provides an example procedure for establishing acceptance-range criteria to assess results from software undergoing BESTEST-EX. This example method for BESTEST-EX is a modified version of the method described in HERS BESTEST.

  6. POST-CLOSURE INSPECTION REPORT FOR THE TONOPAH TEST RANGE, NEVADA FOR CALENDAR YEAR 2005

    SciTech Connect (OSTI)

    2006-06-01

    This post-closure inspection report includes the results of inspections, maintenance and repair activities, and conclusions and recommendations for Calendar Year 2005 for nine Corrective Action Units located on the Tonopah Test Range , Nevada.

  7. Exploration of High Dynamic Range Photography As a Useful Tool for Lighting Design

    E-Print Network [OSTI]

    Saifan, Mariam

    2014-12-31

    This thesis introduces a camera-aided imaging method, better known as high dynamic range (HDR) photography, and how this method could potentially help improve the quality of lighting design analysis. The imaging method captures 18 million luminance...

  8. Effect of long-range transport on local PM10 concentrations in the UK 

    E-Print Network [OSTI]

    Beverland, Iain J; Tunes, Trygve; Heal, Mathew R; Sozanska, Malgorzata; Elton, Robert A; Agius, Raymond M

    2000-01-01

    This study describes the effects of long-range transport of secondary airborne particles on local PM10 levels in Edinburgh (UK) during the period 1 January to 31 March 1996. Air mass back trajectories for each day were ...

  9. Soil Organic Carbon Storage and Aggregate Stability in an Arid Mountain Range, White Mountains, CA

    E-Print Network [OSTI]

    Frisbie, Juanita Aapris

    2014-01-01

    D.L. 1989. Responses of Mountain Big Sagebrush to inducedgradient in the Gongga Mountain on the Tibetan plateau. J.relationships in an arid mountain range, Mojave Desert,

  10. Program Analysis using Symbolic Ranges Sriram Sankaranarayanan, Franjo Ivancic, Aarti Gupta

    E-Print Network [OSTI]

    Sankaranarayanan, Sriram

    Program Analysis using Symbolic Ranges Sriram Sankaranarayanan, Franjo Ivanci´c, Aarti Gupta NEC Laboratories America, {srirams,ivancic,agupta}@nec-labs.com Abstract. Interval analysis seeks static lower

  11. Analog FIR Filter Used for Range-Optimal Pulsed Radar Applications 

    E-Print Network [OSTI]

    Su, Eric Chen

    2014-08-13

    Matched filter is one of the most critical block in radar applications. With different measured range and relative velocity of a target we will need different bandwidth of the matched filter to maximize the radar signal to noise ratio (SNR...

  12. Effect of circumferential groove casing treatment parameters on axial compressor flow range

    E-Print Network [OSTI]

    Hanley, Brian K. (Brian Kyle)

    2010-01-01

    The impact on compressor flow range of circumferential casing grooves of varying groove depth, groove axial location, and groove axial extent is assessed against that of a smooth casing wall using computational experiments. ...

  13. HOME RANGE AND FORAGING HABITAT SELECTION OF SPOTTED OWLS IN THE CENTRAL SIERRA NEVADA

    E-Print Network [OSTI]

    Gutiérrez, R.J.

    , provided field housing and maintenance services over the course of the study. Rob Walters also provided of mature conifer forest within these home ranges was not disproportionate to availability. I used logistic

  14. Techniques for identifying long-range residue correlations in the fifth binding module of LDLR

    E-Print Network [OSTI]

    Lin, Jennifer W

    2006-01-01

    The study of correlations between residues in distal regions of a protein structure may provide insights into the mechanism of protein folding. Such long-range correlations may exist between distant residues that are ...

  15. Model-Based Recognition and Localization from Sparse Range or Tactile Data

    E-Print Network [OSTI]

    Grimson, W. Eric L.

    1983-08-01

    This paper discusses how local measurements of three-dimensional positions and surface normals (recorded by a set of tactile sensors, or by three-dimensional range sensors), may be used to identify and locate objects, ...

  16. The Ecological Basis of Forest Ecosystem Management in the Oregon Coast Range

    E-Print Network [OSTI]

    Wright, Dawn Jeannine

    processes can contribute to reaching ecosystem goals. We draw primarily on information developed31 The Ecological Basis of Forest Ecosystem Management in the Oregon Coast Range Thomas A. Spies twelve major ecological themes (regional environment, ecosystem types and patterns, vegetation

  17. Miocene unroofing of the Canyon Range during extension along the Sevier Desert Detachment, west central Utah

    E-Print Network [OSTI]

    Stockli, Daniel F.; Linn, Jonathan K.; Walker, J. Douglas; Dumitru, Trevor A.

    2001-06-01

    Apatite fission track results from Neoproterozoic and Lower Cambrian quartzites collected from the Canyon Range in west central Utah reveal a significant early to middle Miocene cooling event (?19–15 Ma). Preextensional temperatures estimated from...

  18. Correlation and Finite Interaction-Range Effects in High-Energy Electron Inclusive Scattering

    E-Print Network [OSTI]

    Akihisa Kohama; Koichi Yazaki; Ryoichi Seki

    2000-01-19

    We calculate cross sections of high energy electron inclusive scattering off nuclear matter in a new and consistent formulation based on the Green's function method with the Glauber approximation, which is an extension of our previous work on the nuclear transparency in (e, e'p) reaction. The comparison with other approaches is discussed. In this framework, we study the finite-range effect of the nucleon-nucleon interaction in the final-state interactions, and the effect of the nuclear short-range correlation. We propose a zero-range approximation, which works well when correlation and finite interaction-range effects are included. It greatly reduces the numerical work, while maintaining a reasonable accuracy.

  19. Analytical nuclear gradients for the range-separated many-body dispersion model of noncovalent interactions

    E-Print Network [OSTI]

    Blood-Forsythe, Martin A; DiStasio, Robert A; Car, Roberto; Aspuru-Guzik, Alán

    2015-01-01

    Accurate treatment of the long-range electron correlation energy, including van der Waals (vdW) or dispersion interactions, is essential for describing the structure, dynamics, and function of a wide variety of systems. Among the most accurate models for including dispersion into density functional theory (DFT) is the range-separated many-body dispersion (MBD) method [A. Ambrossetti et al., J. Chem. Phys. 140, 18A508 (2014)], in which the correlation energy is modeled at short-range by a semi-local density functional and at long-range by a model system of coupled quantum harmonic oscillators. In this work, we develop analytical gradients of the MBD energy with respect to nuclear coordinates, including all implicit coordinate dependencies arising from the partitioning of the charge density into Hirshfeld effective volumes. To demonstrate the efficiency and accuracy of these MBD gradients for geometry optimizations of systems with intermolecular and intramolecular interactions, we optimized conformers of the be...

  20. Fact #594: October 26, 2009 Fuel Economy and Annual Fuel Cost Ranges for Vehicle Classes

    Broader source: Energy.gov [DOE]

    The graph below shows the range of the lowest and highest fuel economy for each vehicle class, along with the lowest and highest annual fuel cost (in parentheses). For example, the two-seater model...

  1. Evolution of extensional basins and basin and range topography west of Death Valley, California

    E-Print Network [OSTI]

    Hodges, K. V.; McKenna, L. W.; Stock, J.; Knapp, J.; Page, L.; Sternlof, K.; Silverberg, D.; Wust, G.; Walker, J. Douglas

    1989-06-01

    complex in late Miocene (?) – early Pliocene time. The principal growth structure for the basin was the Emigrant detachment, which initiated and moved at a low angle. Modern Panamint Valley, west of the range, developed as a consequence of Late Pliocene...

  2. Design and control of high-speed and large-range atomic force microscope

    E-Print Network [OSTI]

    Soltani Bozchalooi, Iman, 1981-

    2015-01-01

    This thesis presents the design, control and instrumentation of a novel atomic force microscope (AFM). This AFM is capable of high-speed imaging while maintaining large out-of-plane and lateral scan ranges. The primary ...

  3. Sierra Nevada-Basin and Range Transition Near Reno, Nevada: Two...

    Open Energy Info (EERE)

    Sierra Nevada-Basin and Range Transition Near Reno, Nevada: Two-Stage Development at 12 and 3 Ma Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article:...

  4. Effects of internal waves on low frequency, long range, acoustic propagation in the deep ocean

    E-Print Network [OSTI]

    Xu, Jinshan

    2007-01-01

    This thesis covers a comprehensive analysis of long-range, deep-ocean, low-frequency, sound propagation experimental results obtained from the North Pacific Ocean. The statistics of acoustic fields after propagation through ...

  5. Effects of Context Fo Range in Perception and Production of a Lexical, Tonal Distinction

    E-Print Network [OSTI]

    Wade, Travis

    2002-01-01

    Fundamental frequency range is generally considered a variable, non-linguistic element of speech intonation. This study examined whether absolute FO is predictable based on previous intonational context and is perceptually significant. Tokyo...

  6. Scaling of Precipitation Extremes over a Wide Range of Climates Simulated with an Idealized GCM

    E-Print Network [OSTI]

    O'Gorman, Paul Ambrose

    Extremes of precipitation are examined in a wide range of climates simulated with an idealized aquaplanet GCM. The high percentiles of daily precipitation increase as the climate warms. Their fractional rate of increase ...

  7. KINETIC MODELING OF FUEL EFFECTS OVER A WIDE RANGE OF CHEMISTRY...

    Office of Scientific and Technical Information (OSTI)

    KINETIC MODELING OF FUEL EFFECTS OVER A WIDE RANGE OF CHEMISTRY, PROPERTIES, AND SOURCES Citation Details In-Document Search Title: KINETIC MODELING OF FUEL EFFECTS OVER A WIDE...

  8. Long-Range Interacting Systems ENS Lyon, LR6 C 023 -Salle de conferences

    E-Print Network [OSTI]

    Dauxois, Thierry

    Long-Range Interacting Systems ENS Lyon, LR6 C 023 - Salle de conf´erences 46 all´ee d'Italie, Lyon states of a Vlasov equation and Landau damping. 11h-11h30 Shamik GUPTA (Lyon) Quasi results on long-range interacting systems : the example of the HMF model. 14h30-15h Sergio CILIBERTO (Lyon

  9. Evolution and dynamics of a fold-thrust belt: the Sulaiman Range of Pakistan

    E-Print Network [OSTI]

    Reynolds, Kirsty; Copley, Alex; Hussain, Ekbal

    2015-03-09

    (Treloar & Izatt 1993) and is topped by younger Himalayan molasse. The Sulaiman Range is therefore the uplifted and deformed passive margin sequence of the northwestern edge of the Indian Plate, now accreted to eastern edge of the Afghan Block and being... been significant uplift in the Sulaiman Range— Auden (1974) notes that Jurassic limestones have been uplifted over 6 km above the regional level—it is not clear how much shortening has occurred. Jadoon (1991), Humayon et al. (1991) and Banks & Warburton...

  10. Ranges and kinetic energies of fragments from 14.5-mev neutrons induced fission of ²³?U 

    E-Print Network [OSTI]

    Desai, Rajanikant Dattatraya

    1966-01-01

    RANGES AND KINETIC ENERGIES OF FRAGMENTS FROM 238 14. 5-MEV NEJTRONS INDUCED FISSION OF U A Thesis By RAJANIKANT DATTATRAYA DESAI Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 1966 Major Subject: 'Chemistry RANGES AND KINETIC ENERGIES OF FRAGMENTS FROM 14 ~ 5-ME% NEUTRONS INDUCED FISSION OF U A Thesis By RAJANIKANT DATTATRAYA DESAI Approved as to style and content by: airman o emmet...

  11. Long range weathering effects on the chemical properties of two Venezuelan crude oils 

    E-Print Network [OSTI]

    Bautz, Anton Frank

    1974-01-01

    LONG RANGE WEATHERING EFFECTS ON Tl'iE CHEMICAL PROPERTIES OF TWO VENEZUELAN CRUDE OILS A Thesis ANTON FRANK BAUTZ Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE August 1974 Major Subject: Oceanography LONG RANGE WEATHERING EFFECTS ON THE CHEHICAL PROPERTIES OF TWO VENEZUELAN CRUDE OILS A Thesis by ANTON FRANK BAUTZ Approved as to style and content by: Chairman of C t Head of Department Hember...

  12. Long Range Force Transmission in Fibrous Matrices Enabled by Tension-Driven Alignment of Fibers

    E-Print Network [OSTI]

    Hailong Wang; Abhilash Nair; Christopher S. Chen; Rebecca G. Wells; Vivek B. Shenoy

    2014-09-23

    Cells can sense and respond to mechanical signals over relatively long distances across fibrous extracellular matrices. Here, we explore all of the key factors that influence long range force transmission in cell-populated collagen matrices: alignment of collagen fibers, responses to applied force, strain stiffening properties of the aligned fibers, aspect ratios of the cells, and the polarization of cellular contraction. A constitutive law accounting for mechanically-driven collagen fiber reorientation is proposed. We systematically investigate the range of collagen fiber alignment using both finite element simulations and analytical calculations. Our results show that tension-driven collagen fiber alignment plays a crucial role in force transmission. Small critical stretch for fiber alignment, large fiber stiffness and fiber strain hardening behavior enable long-range interaction. Furthermore, the range of collagen fiber alignment for elliptical cells with polarized contraction is much larger than that for spherical cells with diagonal contraction. A phase diagram showing the range of force transmission as a function of cell shape and polarization and matrix properties is presented. Our results are in good agreement with recent experiments, and highlight the factors that influence long-range force transmission, in particular tension-driven alignment of fibers. Our work has important relevance to biological processes including development, cancer metastasis and wound healing, suggesting conditions whereby cells communicate over long distances.

  13. Optimized Operating Range for Large-Format LiFePO4/Graphite Batteries

    SciTech Connect (OSTI)

    Jiang, Jiuchun; Shi, Wei; Zheng, Jianming; Zuo, Pengjian; Xiao, Jie; Chen, Xilin; Xu, Wu; Zhang, Jiguang

    2014-06-01

    e investigated the long-term cycling performance of large format 20Ah LiFePO4/graphite batteries when they are cycled in various state-of-charge (SOC) ranges. It is found that batteries cycled in the medium SOC range (ca. 20~80% SOC) exhibit superior cycling stability than batteries cycled at both ends (0-20% or 80-100%) of the SOC even though the capcity utilized in the medium SOC range is three times as large as those cycled at both ends of the SOC. Several non-destructive techniques, including a voltage interruption approach, model-based parameter identification, electrode impedance spectra analysis, ?Q/?V analysis, and entropy change test, were used to investigate the performance of LiFePO4/graphite batteries within different SOC ranges. The results reveal that batteries at the ends of SOC exhibit much higher polarization impedance than those at the medium SOC range. These results can be attributed to the significant structural change of cathode and anode materials as revealed by the large entropy change within these ranges. The direct correlation between the polarization impedance and the cycle life of the batteries provides an effective methodology for battery management systems to control and prolong the cycle life of LiFePO4/graphite and other batteries.

  14. Socially Optimal Electric Driving Range of Plug-in Hybrid Electric Vehicles

    SciTech Connect (OSTI)

    Kontou, Eleftheria [ORNL; Yin, Yafeng [University of Florida; Lin, Zhenhong [ORNL

    2015-01-01

    This study determines the optimal electric driving range of plug-in hybrid electric vehicles (PHEVs) that minimizes the daily cost borne by the society when using this technology. An optimization framework is developed and applied to datasets representing the US market. Results indicate that the optimal range is 16 miles with an average social cost of $3.19 per day when exclusively charging at home, compared to $3.27 per day of driving a conventional vehicle. The optimal range is found to be sensitive to the cost of battery packs and the price of gasoline. When workplace charging is available, the optimal electric driving range surprisingly increases from 16 to 22 miles, as larger batteries would allow drivers to better take advantage of the charging opportunities to achieve longer electrified travel distances, yielding social cost savings. If workplace charging is available, the optimal density is to deploy a workplace charger for every 3.66 vehicles. Moreover, the diversification of the battery size, i.e., introducing a pair and triple of electric driving ranges to the market, could further decrease the average societal cost per PHEV by 7.45% and 11.5% respectively.

  15. Effect of simple solutes on the long range dipolar correlations in liquid water

    E-Print Network [OSTI]

    Upayan Baul; J. Maruthi Pradeep Kanth; Ramesh Anishetty; Satyavani Vemparala

    2015-12-07

    Intermolecular correlations in liquid water at ambient conditions have generally been characterized through short range density fluctuations described through the atomic pair distribution functions (PDF). Recent numerical and experimental results have suggested that such a description of order or structure in liquid water is incomplete and there exists considerably longer ranged orientational correlations in water that can be studied through dipolar correlations. In this study, using large scale classical, atomistic molecular dynamics (MD) simulations using TIP4P-Ew and TIP3P models of water, we show that salts such as sodium chloride (NaCl), potassium chloride (KCl), caesium chloride (CsCl) and magnesium chloride (MgCl$_2$) have a long range effect on the dipolar correlations, which can not be explained by the notion of structure making and breaking by dissolved ions. The relative effects of cations on dipolar correlations are observed to be consistent with the well-known Hofmeister series. Observed effects are explained through orientational stratification of water molecules around ions, and their long range coupling to the global hydrogen bond network by virtue of the sum rule for water. The observations for single hydrophilic solutes are contrasted with the same for a single methane (CH$_4$) molecule. We observe that even a single small hydrophobe can result in enhancement of long range orientational correlations in liquid water,- contrary to the case of dissolved ions, which have been observed to have a reducing effect. The observations from this study are discussed in the context of hydrophobic effect.

  16. The solubility of hydrogen in plutonium in the temperature range 475 to 825 degrees centigrade

    SciTech Connect (OSTI)

    Allen, T.H.

    1991-01-01

    The solubility of hydrogen (H) in plutonium metal (Pu) was measured in the temperature range of 475 to 825{degree}C for unalloyed Pu (UA) and in the temperature range of 475 to 625{degree}C for Pu containing two-weight-percent gallium (TWP). For TWP metal, in the temperature range 475 to 600{degree}C, the saturated solution has a maximum hydrogen to plutonium ration (H/Pu) of 0.00998 and the standard enthalpy of formation ({Delta}H{degree}{sub f(s)}) is (-0.128 {plus minus} 0.0123) kcal/mol. The phase boundary of the solid solution in equilibrium with plutonium dihydride (PuH{sub 2}) is temperature independent. In the temperature range 475 to 625{degree}C, UA metal has a maximum solubility at H/Pu = 0.011. The phase boundary between the solid solution region and the metal+PuH{sub 2} two-phase region is temperature dependent. The solubility of hydrogen in UA metal was also measured in the temperature range 650 to 825{degree}C with {Delta}H{degree}{sub f(s)} = (-0.104 {plus minus} 0.0143) kcal/mol and {Delta}S{degree}{sub f(s)} = 0. The phase boundary is temperature dependent and the maximum hydrogen solubility has H/Pu = 0.0674 at 825{degree}C. 52 refs., 28 figs., 9 tabs.

  17. Socially optimal electric driving range of plug-in hybrid electric vehicles

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

    Kontou, Eleftheria; Yin, Yafeng; Lin, Zhenhong

    2015-07-25

    This study determines the optimal electric driving range of plug-in hybrid electric vehicles (PHEVs) that minimizes the daily cost borne by the society when using this technology. An optimization framework is developed and applied to datasets representing the US market. Results indicate that the optimal range is 16 miles with an average social cost of 3.19 per day when exclusively charging at home, compared to 3.27 per day of driving a conventional vehicle. The optimal range is found to be sensitive to the cost of battery packs and the price of gasoline. When workplace charging is available, the optimal electricmore »driving range surprisingly increases from 16 to 22 miles, as larger batteries would allow drivers to better take advantage of the charging opportunities to achieve longer electrified travel distances, yielding social cost savings. If workplace charging is available, the optimal density is to deploy a workplace charger for every 3.66 vehicles. Moreover, the diversification of the battery size, i.e., introducing a pair and triple of electric driving ranges to the market, could further decrease the average societal cost per PHEV by 7.45% and 11.5% respectively.« less

  18. Long-range Acoustic Interactions in Insect Swarms: An Adaptive Gravity Model

    E-Print Network [OSTI]

    Gorbonos, Dan; Puckett, James G; Ni, Rui; Ouellette, Nicholas T; Gov, Nir S

    2015-01-01

    The collective motion of groups of animals emerges from the net effect of the interactions between individual members of the group. In many cases, such as birds, fish, or ungulates, these interactions are mediated by sensory stimuli that predominantly arise from nearby neighbors. But not all stimuli in animal groups are short range. Here, we consider mating swarms of midges, which interact primarily via long-range acoustic stimuli. We exploit the similarity in form between the decay of acoustic and gravitational sources to build a model for swarm behavior. By accounting for the adaptive nature of the midges' acoustic sensing, we show that our "adaptive gravity" model makes mean-field predictions that agree well with experimental observations of laboratory swarms. Our results highlight the role of sensory mechanisms and interaction range in collective animal behavior. The adaptive interactions that we present here open a new class of equations of motion, which may appear in other biological contexts.

  19. Cross sections for electron scattering by propane in the low- and intermediate-energy ranges

    SciTech Connect (OSTI)

    Souza, G. L. C. de; Lee, M.-T.; Sanches, I. P.; Rawat, P.; Iga, I.; Santos, A. S. dos; Machado, L. E.; Sugohara, R. T.; Brescansin, L. M.; Homem, M. G. P.; Lucchese, R. R.

    2010-07-15

    We present a joint theoretical-experimental study on electron scattering by propane (C{sub 3}H{sub 8}) in the low- and intermediate-energy ranges. Calculated elastic differential, integral, and momentum transfer as well as total (elastic + inelastic) and total absorption cross sections are reported for impact energies ranging from 2 to 500 eV. Also, experimental absolute elastic cross sections are reported in the 40- to 500-eV energy range. A complex optical potential is used to represent the electron-molecule interaction dynamics. A theoretical method based on the single-center-expansion close-coupling framework and corrected by the Pade approximant is used to solve the scattering equations. The experimental angular distributions of the scattered electrons are converted to absolute cross sections using the relative flow technique. The comparison of our calculated with our measured results, as well as with other experimental and theoretical data available in the literature, is encouraging.

  20. Adiabatic freezing of long-range quantum correlations in spin chains

    E-Print Network [OSTI]

    Himadri Shekhar Dhar; Debraj Rakshit; Aditi Sen De; Ujjwal Sen

    2015-02-05

    Establishing long-range quantum correlation is an integral part of several quantum information processing tasks. We consider a process to create quasi long-range quantum discord between the non-interacting end spins of a quantum spin chain, with the end spins weakly coupled to the bulk of the chain. We find that the process is not only capable of creating long-range quantum correlation but the latter remains frozen, when certain weak end-couplings are adiabatically varied, provided they are below certain thresholds. We term this phenomenon as adiabatic freezing of quantum correlation, which is robust to moderate thermal fluctuations. We also find that the energy gap of the system can remain frozen for the adiabatic variations. Moreover, considering the end spins as probes, we show that the freezing length can detect the anisotropy transition in quantum $XY$ spin chains.