Powered by Deep Web Technologies
Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Resolving the 1040 keV cosmic X-ray background with constellation-X  

Science Journals Connector (OSTI)

The energy density of the Cosmic X-ray background (XRB) peaks around 30 keV (see Figure 1) an energy not yet probed by focussing imaging instruments. The first hard X-ray telescope due to fly on a space mission will be that on board Constellation-X. The imaging capability besides providing an improvement of several orders of magnitude in sensitivity over current passively collimated detectors will permit for the first time to resolve a fraction of the XRB at this most crucial energy. Synthesis models of the XRB based on obscured AGN predict that at least 40% of the 1040 keV XRB will be resolved by Constellation-X.

Giorgio Matt; Fulvio Pompilio; Fabio La Franca

2001-01-01T23:59:59.000Z

2

Resolving the 10-40 keV Cosmic X-ray Background with Constellation-X  

E-Print Network (OSTI)

The energy density of the Cosmic X-ray background (XRB) peaks around 30 keV (see Figure 1), an energy not yet probed by focussing imaging instruments. The first hard X-ray telescope due to fly on a space mission will be that on board Constellation-X. The imaging capability, besides providing an improvement of several orders of magnitude in sensitivity over current passively collimated detectors, will permit for the first time to resolve a fraction of the XRB at this most crucial energy. Synthesis models of the XRB based on obscured AGN predict that at least 40% of the 10-40 keV XRB will be resolved by Constellation-X.

Giorgio Matt; Fulvio Pompilio; Fabio La Franca

2000-07-08T23:59:59.000Z

3

TIME-RESOLVED 1-10 keV CRYSTAL SPECTROMETER FOR THE Z MACHINE AT SANDIA NATIONAL LABORATORIES  

SciTech Connect

We have designed, fabricated, calibrated, and fielded a fast, time-resolved 1-10 keV crystal spectrometer to observe the evolution of wire pinch spectra at the Z machine at Sandia National Laboratories. The instrument has two convex cylindrical crystals (PET and KAP). Both crystals Bragg reflect x-rays into an array of ten silicon diodes, providing continuous spectral coverage in twenty channels from 1.0 to 10 keV. The spectral response of the instrument has been calibrated from 1.0 to 6.3 keV at beamline X8A at the National Synchrotron Light Source. The time response of the 1-mm2 silicon detectors was measured with the Pulsed X-ray Source at Bechtel Nevada's Los Alamos Operations, where 2-nanosecond full-width half-maximum (FWHM) waveforms with 700-picosecond rise times typically were observed. The spectrometer has been fielded recently on several experimental runs at the Z Machine. In this paper, we present the time-resolved spectra resulting from the implosions of double-nested tungsten wire arrays onto 5-mm diameter foam cylinders. We also show the results obtained for a double-nested stainless steel wire array with no target cylinder. The spectrometer was located at the end of a 7.1-meter beamline on line-of sight (LOS)21/22, at an angle 12{sup o} above the equatorial plane, and was protected from the debris field by a customized dual-slit fast valve. The soft detector channels below 2.0 keV recorded large signals at pinch time coinciding with signals recorded on vacuum x-ray diodes (XRDs). On experiment Z993, the spectrometer channels recorded a second pulse with a hard x-ray emission spectrum several nanoseconds after pinch time.

D. V. Morgan; S. Gardner; R. Liljestrand; M. Madlener; S. Slavin; M. Wu

2003-06-01T23:59:59.000Z

4

High Mass Accuracy and High Mass Resolving Power FT-ICR Secondary...  

NLE Websites -- All DOE Office Websites (Extended Search)

small molecules and fragments. For the first time, ultra-high mass resolving power SIMS has been demonstrated, with m?m50% > 3,000,000. Higher spatial resolution...

5

Method for enhancing the resolving power of ion mobility separations over a limited mobility range  

DOE Patents (OSTI)

A method for raising the resolving power, specificity, and peak capacity of conventional ion mobility spectrometry is disclosed. Ions are separated in a dynamic electric field comprising an oscillatory field wave and opposing static field, or at least two counter propagating waves with different parameters (amplitude, profile, frequency, or speed). As the functional dependencies of mean drift velocity on the ion mobility in a wave and static field or in unequal waves differ, only single species is equilibrated while others drift in either direction and are mobility-separated. An ion mobility spectrum over a limited range is then acquired by measuring ion drift times through a fixed distance inside the gas-filled enclosure. The resolving power in the vicinity of equilibrium mobility substantially exceeds that for known traveling-wave or drift-tube IMS separations, with spectra over wider ranges obtainable by stitching multiple segments. The approach also enables low-cutoff, high-cutoff, and bandpass ion mobility filters.

Shvartsburg, Alexandre A; Tang, Keqi; Smith, Richard D

2014-09-23T23:59:59.000Z

6

An Investigation to Resolve the Interaction Between Fuel Cell, Power Conditioning System and Application Loads  

SciTech Connect

Development of high-performance and durable solidoxide fuel cells (SOFCs) and a SOFC power-generating system requires knowledge of the feedback effects from the power-conditioning electronics and from application-electrical-power circuits that may pass through or excite the power-electronics subsystem (PES). Therefore, it is important to develop analytical models and methodologies, which can be used to investigate and mitigate the effects of the electrical feedbacks from the PES and the application loads (ALs) on the reliability and performance of SOFC systems for stationary and non-stationary applications. However, any such attempt to resolve the electrical impacts of the PES on the SOFC would be incomplete unless one utilizes a comprehensive analysis, which takes into account the interactions of SOFC, PES, balance-of-plant system (BOPS), and ALs as a whole. SOFCs respond quickly to changes in load and exhibit high part- and full-load efficiencies due to its rapid electrochemistry, which is not true for the thermal and mechanical time constants of the BOPS, where load-following time constants are, typically, several orders of magnitude higher. This dichotomy can affect the lifetime and durability of the SOFCSs and limit the applicability of SOFC systems for load-varying stationary and transportation applications. Furthermore, without validated analytical models and investigative design and optimization methodologies, realizations of cost-effective, reliable, and optimal PESs (and power-management controls), in particular, and SOFC systems, in general, are difficult. On the whole, the research effort can lead to (a) cost-constrained optimal PES design for high-performance SOFCS and high energy efficiency and power density, (b) effective SOFC power-system design, analyses, and optimization, and (c) controllers and modulation schemes for mitigation of electrical impacts and wider-stability margin and enhanced system efficiency.

Sudip K. Mazumder

2005-12-31T23:59:59.000Z

7

High Mass Accuracy and High Mass Resolving Power FT-ICR Secondary Ion Mass Spectrometry for Biological Tissue Imaging  

SciTech Connect

Biological tissue imaging by secondary ion mass spectrometry has seen rapid development with the commercial availability of polyatomic primary ion sources. Endogenous lipids and other small bio-molecules can now be routinely mapped on the micrometer scale. Such experiments are typically performed on time-of-flight mass spectrometers for high sensitivity and high repetition rate imaging. However, such mass analyzers lack the mass resolving power to ensure separation of isobaric ions and the mass accuracy for exact mass elemental formula assignment. We have recently reported a secondary ion mass spectrometer with the combination of a C60 primary ion gun with a Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS) for high mass resolving power, high mass measurement accuracy and tandem mass spectrometry capabilities. In this work, high specificity and high sensitivity secondary ion FT-ICR MS was applied to chemical imaging of biological tissue. An entire rat brain tissue was measured with 150 ?m spatial resolution (75 ?m primary ion spot size) with mass resolving power (m/?m50%) of 67,500 (at m/z 750) and root-mean-square measurement accuracy less than two parts-per-million for intact phospholipids, small molecules and fragments. For the first time, ultra-high mass resolving power SIMS has been demonstrated, with m/?m50% > 3,000,000. Higher spatial resolution capabilities of the platform were tested at a spatial resolution of 20 ?m. The results represent order of magnitude improvements in mass resolving power and mass measurement accuracy for SIMS imaging and the promise of the platform for ultra-high mass resolving power and high spatial resolution imaging.

Smith, Donald F.; Kiss, Andras; Leach, Franklin E.; Robinson, Errol W.; Pasa-Tolic, Ljiljana; Heeren, Ronald M.

2013-07-01T23:59:59.000Z

8

The CLIMIX model: A tool to create and evaluate spatially-resolved scenarios of photovoltaic and wind power development  

Science Journals Connector (OSTI)

Abstract Renewable energies arise as part of both economic development plans and mitigation strategies aimed at abating climate change. Contrariwise, most renewable energies are potentially vulnerable to climate change, which could affect in particular solar and wind power. Proper evaluations of this two-way climaterenewable energy relationship require detailed information of the geographical location of the renewable energy fleets. However, this information is usually provided as total amounts installed per administrative region, especially with respect to future planned installations. To help overcome this limiting issue, the objective of this contribution was to develop the so-called CLIMIX model: a tool that performs a realistic spatial allocation of given amounts of both photovoltaic (PV) and wind power installed capacities and evaluates the energy generated under varying climate conditions. This is done over a regular grid so that the created scenarios can be directly used in conjunction with outputs of climate models. First, we used the 0.44 resolution grid defined for the EURO-CORDEX project and applied the CLIMIX model to spatially allocate total amounts of both unreported 2012 and future 2020 PV and wind power installations in Europe at the country level. Second, we performed a validation exercise using the various options for estimating PV and wind power production under the created scenarios that are included in the model. The results revealed an acceptable agreement between the estimated and the recorded power production values in every European country. Lastly, we estimated increases in power production derived from the future deployment of new renewable units, often obtaining non-direct relationships. This latter further emphasizes the need of accurate spatially-resolved PV and wind power scenarios in order to perform reliable estimations of power production.

S. Jerez; F. Thais; I. Tobin; M. Wild; A. Colette; P. Yiou; R. Vautard

2015-01-01T23:59:59.000Z

9

Using graph theory to resolve state estimator issues faced by deregulated power systems  

E-Print Network (OSTI)

.................................. 75 5.3 The global semantic dictionary for the SKW.................................... 77 5.4 The SKW with ontology connection knowledge .............................. 79 5.5 System entity relationships in a typical power market... centers and logistics departments. Information integration for such a system has become very challenging [49-55]. Common Information Model (CIM) is utilized for data exchange [53]. How to transform the legacy Energy Management System (EMS) system...

Lei, Jiansheng

2009-05-15T23:59:59.000Z

10

GALAXY CLUSTERS IN THE SWIFT/BAT ERA. II. 10 MORE CLUSTERS DETECTED ABOVE 15 keV  

SciTech Connect

We report on the discovery of 10 additional galaxy clusters detected in the ongoing Swift/Burst Alert Telescope (BAT) all-sky survey. Among the newly BAT-discovered clusters there are Bullet, A85, Norma, and PKS 0745-19. Norma is the only cluster, among those presented here, which is resolved by BAT. For all the clusters, we perform a detailed spectral analysis using XMM-Newton and Swift/BAT data to investigate the presence of a hard (non-thermal) X-ray excess. We find that in most cases the clusters' emission in the 0.3-200 keV band can be explained by a multi-temperature thermal model confirming our previous results. For two clusters (Bullet and A3667), we find evidence for the presence of a hard X-ray excess. In the case of the Bullet cluster, our analysis confirms the presence of a non-thermal, power-law-like, component with a 20-100 keV flux of 3.4 x 10{sup -12} erg cm{sup -2} s{sup -1} as detected in previous studies. For A3667, the excess emission can be successfully modeled as a hot component (kT {approx} 13 keV). We thus conclude that the hard X-ray emission from galaxy clusters (except the Bullet) has most likely a thermal origin.

Ajello, M.; Reimer, O. [SLAC National Laboratory and Kavli Institute for Particle Astrophysics and Cosmology, 2575 Sand Hill Road, Menlo Park, CA 94025 (United States); Rebusco, P. [Kavli Institute for Astrophysics and Space Research, MIT, Cambridge, MA 02139 (United States); Cappelluti, N.; Boehringer, H. [Max Planck Institut fuer Extraterrestrische Physik, P.O. Box 1603, 85740, Garching (Germany); La Parola, V.; Cusumano, G., E-mail: majello@slac.stanford.ed [INAF, Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo, via U. La Malfa 153, 90146 Palermo (Italy)

2010-12-20T23:59:59.000Z

11

Development of an Optimum Tracer Set for Apportioning Emissions of Individual Power Plants Using Highly Time-Resolved Measurements and Advanced Receptor Modeling  

SciTech Connect

In previous studies, 11 elements (Al, As, Cd, Cr, Cu, Fe, Mn, Ni, Pb, Se, and Zn) were determined in 30-minute aerosol samples collected with the University of Maryland Semicontinuous Elements in Aerosol Sampler (SEAS; Kidwell and Ondov, 2001, 2004; SEAS-II) in several locations in which air quality is influenced by emissions from coal- or oil-fired power plants. At this time resolution, plumes from stationary high temperature combustion sources are readily detected as large excursions in ambient concentrations of elements emitted by these sources (Pancras et al. ). Moreover, the time-series data contain intrinsic information on the lateral diffusion of the plume (e.g., {sigma}{sub y}), which Park et al. (2005 and 2006) have exploited in their Pseudo-Deterministic Receptor Model (PDRM), to calculate emission rates of SO{sub 2} and 11 elements (mentioned above) from four individual coal- and oil-fired power plants in the Tampa Bay area. In the current project, we proposed that the resolving power of source apportionment methods might be improved by expanding the set of maker species and that there exist some optimum set of marker species that could be used. The ultimate goal was to determine the utility of using additional elements to better identify and isolate contributions of individual power plants to ambient levels of PM and its constituents. And, having achieved better resolution, achieve, also, better emission rate estimates. In this study, we optimized sample preparation and instrumental protocols for simultaneous analysis of 28 elements in dilute slurry samples collected with the SEAS with a new state-of-the-art Thermo-Systems, Inc., X-series II, Inductively Coupled Plasma Mass Spectroscopy (ICP-MS), and reanalyzed the samples previously collected in Tampa during the modeling period studied by Park et al. (2005) in which emission rates from four coal- and oil-fired power plants affected air quality at the sampling site. In the original model, Park et al. (2005), included 6 sources. Herein, we reassessed the number of contributing sources in light of the new data. A comprehensive list of sources was prepared and both our Gaussian Plume model and PMF were used to identify and predict the relative strengths of source contributions at the receptor sites. Additionally, PDRM was modified to apply National Inventory Emissions, Toxic Release Inventory, and Chemical Mass Balance source profile data to further constrain solutions. Both the original Tampa data set (SO{sub 2} plus 11 elements) and the new expanded data set (SO{sub 2} plus 23 elements) were used to resolve the contributions of particle constituents and PM to sources using Positive Matrix Factorization (PMF) and PDRM.

John Ondov; Gregory Beachley

2007-07-05T23:59:59.000Z

12

Internal electron conversion of the isomeric {sup 57}Fe nucleus state with an energy of 14.4 keV excited by the radiation of the plasma of a high-power femtosecond laser pulse  

SciTech Connect

We recorded the spectrum of delayed secondary electrons ejected from the target, which was coated with a layer of iron enriched with the {sup 57}Fe isotope to 98%, under its irradiation by fluxes of broadband X-ray radiation and fast electrons from the plasma produced by a femtosecond laser pulse at an intensity of 10{sup 17} W cm{sup -2}. Maxima were identified at energies of 5.6, 7.2, and 13.6 keV in the spectrum obtained for a delay of 90 - 120 ns. The two last-listed maxima owe their origin to the internal electron conversion of the isomeric level with an energy of 14.4 keV and a lifetime of 98 ns to the K and L shells of atomic iron, respectively; the first-named level arises from a cascade K - L{sub 2}L{sub 3} Auger process. Photoexcitaion by the X-ray plasma radiation is shown to be the principal channel of the isomeric level excitation. (interaction of laser radiation with matter)

Golovin, G V; Savel'ev-Trofimov, Andrei B; Uryupina, D S; Volkov, Roman V [International Laser Center, M. V. Lomonosov Moscow State University, Moscow (Russian Federation)

2011-03-31T23:59:59.000Z

13

On the 17-keV neutrino  

SciTech Connect

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.

Hime, A.

1993-04-01T23:59:59.000Z

14

On the 17-keV neutrino  

SciTech Connect

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.

Hime, A.

1993-04-01T23:59:59.000Z

15

Time-Resolved  

NLE Websites -- All DOE Office Websites (Extended Search)

Time-Resolved Time-Resolved Time-Resolved Print Of the four fundamental parameters that we use to perceive the physical world (energy, momentum, position, and time) three correspond to the three broad categories of synchrotron experimental measurement techniques: spectroscopy (energy), scattering (momentum), and imaging (position). The fourth parameter-time-can in principle be applied to all the techniques. At the ALS, many experiments can be carried out in real time, with data being recorded from the same sample as it changes over time. Some time-resolved experiments take advantage of the pulsed nature of the ALS's synchrotron radiation, which, like a strobe light, can capture a series of "snapshots" of a process that, when viewed sequentially, show us how a given process evolves over time. Other experiments simply require two pulses: one to "pump" energy into the sample system and a second to probe the system's excited state.

16

Resolving Water's Electrical Properties | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

Resolving Water's Electrical Properties Resolving Water's Electrical Properties Team ends long-standing confusion about modeling water's electrons The team's work appears on the...

17

Time-Resolved Research at the Advanced Photon Source Beamline 7-ID  

SciTech Connect

The Sector 7 undulator beamline (7-ID) of the Advanced Photon Source (APS) is dedicated to time-resolved x-ray research and is capable of ultrafast measurements on the order of 100 ps. Beamline 7-ID has a laser laboratory featuring a Ti:Sapphire system (average power of 2.5W, pulse duration <50 fs, repetition rate 1-5 kHz) that can be synchronized to the bunch pattern of the storage ring. The laser is deliverable to x-ray enclosures, which contain diffractometers, as well as motorized optical tables for table-top experiments. Beamline 7-ID has a single APS Undulator A and uses a diamond (111) double-crystal monochromator, providing good energy resolution over a range of 6-24 keV. Available optics include Kirkpatrick-Baez (KB) mirrors to microfocus the x-ray beam. A variety of time-resolved diffraction and spectroscopy research is available at 7-ID, with experiments being done in the atomic, molecular, optical, chemistry, and solid state (bulk and surface) fields.

Dufresne, Eric M.; Adams, Bernhard; Arms, Dohn A.; Chollet, Matthieu; Landahl, Eric C.; Li, Yuelin; Walko, Donald A.; Wang, Jin

2010-08-02T23:59:59.000Z

18

Lifetime of 981-Kev State in Li-8  

E-Print Network (OSTI)

PHYSICAL REVIEW C VOLUME 3, NUMBER 2 FEBRUARY 1971 Lifetime of the 981-keV State in Li ~ M. J. Throop* University of Iosoa, Iozea City, Ious 52240 and D. H. Youngblood Texas A. @M University, College Station, Texas 77843 and G. C. Morrison...- tify contaminant peaks, spectra were obtained for C and 0 targets at a Liv energy of 7.4 MeV. In Fig. 2, the peaks from the Li7+ C reaction are those at 871 keV (from the 0.871 0.0-MeV trans- ition in 0") and at 960 keV (the double-escape peak from...

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

1971-01-01T23:59:59.000Z

19

Measurement of the neutron capture cross section of the s-only isotope 204Pb from 1 eV to 440 keV  

E-Print Network (OSTI)

The neutron capture cross section of 204Pb has been measured at the CERN n_TOF installation with high resolution in the energy range from 1 eV to 440 keV. An R-matrix analysis of the resolved resonance region, between 1 eV and 100 keV, was carried out using the SAMMY code. In the interval between 100 keV and 440 keV we report the average capture cross section. The background in the entire neutron energy range could be reliably determined from the measurement of a 208Pb sample. Other systematic effects in this measurement could be investigated and precisely corrected by means of detailed Monte Carlo simulations. We obtain a Maxwellian average capture cross section for 204Pb at kT=30 keV of 79(3) mb, in agreement with previous experiments. However our cross section at kT=5 keV is about 35% larger than the values reported so far. The implications of the new cross section for the s-process abundance contributions in the Pb/Bi region are discussed.

C. Domingo-Pardo

2006-10-24T23:59:59.000Z

20

Compact, maintainable 80-KeV neutral beam module  

DOE Patents (OSTI)

A compact, maintainable 80-keV arc chamber, extractor module for a neutral beam system immersed in a vacuum of <10.sup.-2 Torr, incorporating a nested 60-keV gradient shield located midway between the high voltage ion source and surrounding grounded frame. The shield reduces breakdown or arcing path length without increasing the voltage gradient, tends to keep electric fields normal to conducting surfaces rather than skewed and reduces the peak electric field around irregularities on the 80-keV electrodes. The arc chamber or ion source is mounted separately from the extractor or ion accelerator to reduce misalignment of the accelerator and to permit separate maintenance to be performed on these systems. The separate mounting of the ion source provides for maintaining same without removing the ion accelerator.

Fink, Joel H. (Livermore, CA); Molvik, Arthur W. (Livermore, CA)

1980-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Hard x-ray (>100 keV) imager to measure hot electron preheat for indirectly driven capsule implosions on the NIF  

SciTech Connect

We have fielded a hard x-ray (>100 keV) imager with high aspect ratio pinholes to measure the spatially resolved bremsstrahlung emission from energetic electrons slowing in a plastic ablator shell during indirectly driven implosions at the National Ignition Facility. These electrons are generated in laser plasma interactions and are a source of preheat to the deuterium-tritium fuel. First measurements show that hot electron preheat does not limit obtaining the fuel areal densities required for ignition and burn.

Doeppner, T.; Dewald, E. L.; Divol, L.; Thomas, C. A.; Burns, S.; Celliers, P. M.; Izumi, N.; LaCaille, G.; McNaney, J. M.; Prasad, R. R.; Robey, H. F.; Glenzer, S. H.; Landen, O. L. [Lawrence Livermore National Laboratory, Livermore, California 94551 (United States); Kline, J. L. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

2012-10-15T23:59:59.000Z

22

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

E-Print Network (OSTI)

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.

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

2007-02-27T23:59:59.000Z

23

Relic keV sterile neutrinos and reionization  

E-Print Network (OSTI)

A sterile neutrino with mass of several keV can account for cosmological dark matter, as well as explain the observed velocities of pulsars. We show that X-rays produced by the decays of these relic sterile neutrinos can boost the production of molecular hydrogen, which can speed up the cooling of gas and the early star formation, which can, in turn, lead to a reionization of the universe at a high enough redshift to be consistent with the WMAP results.

Peter L. Biermann; Alexander Kusenko

2005-12-31T23:59:59.000Z

24

QUIET-TIME INTERPLANETARY {approx}2-20 keV SUPERHALO ELECTRONS AT SOLAR MINIMUM  

SciTech Connect

We present a statistical survey of {approx}2-20 keV superhalo electrons in the solar wind measured by the SupraThermal Electron instrument on board the two STEREO spacecraft during quiet-time periods from 2007 March through 2009 March at solar minimum. The observed superhalo electrons have a nearly isotropic angular distribution and a power-law spectrum, f{proportional_to}v{sup -{gamma}}, with {gamma} ranging from 5 to 8.7, with nearly half between 6.5 and 7.5, and an average index of 6.69 {+-} 0.90. The observed power-law spectrum varies significantly on a spatial scale of {approx}>0.1 AU and a temporal scale of {approx}>several days. The integrated density of quiet-time superhalo electrons at 2-20 keV ranges from {approx}10{sup -8} cm{sup -3} to 10{sup -6} cm{sup -3}, about 10{sup -9}-10{sup -6} of the solar wind density, and, as well as the power-law spectrum, shows no correlation with solar wind proton density, velocity, or temperature. The density of superhalo electrons appears to show a solar-cycle variation at solar minimum, while the power-law spectral index {gamma} has no solar-cycle variation. These quiet-time superhalo electrons are present even in the absence of any solar activity-e.g., active regions, flares or microflares, type III radio bursts, etc.-suggesting that they may be accelerated by processes such as resonant wave-particle interactions in the interplanetary medium, or possibly by nonthermal processes related to the acceleration of the solar wind such as nanoflares, or by acceleration at the CIR forward shocks.

Wang, Linghua [Department of Geophysics, Peking University, 100871 Beijing (China); Lin, Robert P.; Salem, Chadi; Pulupa, Marc; Larson, Davin E.; Luhmann, Janet G. [Space Sciences Laboratory, University of California, Berkeley, CA 94720-7450 (United States); Yoon, Peter H., E-mail: wanglhwang@gmail.com [School of Space Research, Kyung Hee University, Yongin, Gyeonggi (Korea, Republic of)

2012-07-01T23:59:59.000Z

25

Linac4 45 keV Proton Beam Measurements  

E-Print Network (OSTI)

Linac4 is a 160 MeV normal-conducting H- linear accelerator, which will replace the 50 MeV proton Linac2 as injector for the CERN proton complex. Commissioning of the low energy part - comprising the H - source, a 45 keV Low Energy Beam Transport line (LEBT), a 3 MeV Radiofrequency Quadrupole (RFQ) and a Medium Energy Beam Transport (MEBT) - will start in fall 2012 on a dedicated test stand installation. In preparation to this, preliminary measurements were taken using a 45 keV proton source and a temporary LEBT setup, with the aim of characterising the output beam by comparison with the predictions of simulations. At the same time this allowed a first verification of the functionalities of diagnostics instrumentation and acquisition software tools. Measurements of beam profile, emittance and intensity were taken in three different setups: right after the source, after the first and after the second LEBT solenoids respectively. Particle distributions were reconstructed from emittance scan...

Bellodi, G; Hein, L M; Lallement, J-B; Lombardi, A M; Midttun, O; Scrivens, R; Posocco, P A

2013-01-01T23:59:59.000Z

26

Study of 18 keV K-? x-ray emission from high intensity femtosecond laser produced plasma  

SciTech Connect

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.

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)

2014-04-15T23:59:59.000Z

27

Ion Source Development For The Proposed FNAL 750 keV Injector Upgrade  

SciTech Connect

Currently there is a Proposed FNAL 750 keV Injector Upgrade for the replacement of the 40 year old Fermi National Laboratory (FNAL) Cockcroft-Walton accelerators with a new ion source and 200 MHz 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 >60 mA of H{sup -} beam current, 15 Hz rep-rate, 100 {mu}s 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).

Bollinger, D. S. [Fermi National Accelerator Laboratory, Box 500, Batavia, IL 60543 (United States)

2011-09-26T23:59:59.000Z

28

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

E-Print Network (OSTI)

.1475 0.1291 0.0959 0.2654 0.2445 0.2092 0.1555 0.1048 0,0452 0.0452 0.0349 0.0197 0.0088 0.0248 0.0216 0.0168 0.0110 0.0063 I ' I ' I I I I 3.0? ~ PAGPM FSHB ~ GI I i I 20 60 I i I i I ) 100 140 180 E (kev) I 220 FIG. 3....1475 0.1291 0.0959 0.2654 0.2445 0.2092 0.1555 0.1048 0,0452 0.0452 0.0349 0.0197 0.0088 0.0248 0.0216 0.0168 0.0110 0.0063 I ' I ' I I I I 3.0? ~ PAGPM FSHB ~ GI I i I 20 60 I i I i I ) 100 140 180 E (kev) I 220 FIG. 3...

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

1977-01-01T23:59:59.000Z

29

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

SciTech Connect

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.

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

2008-02-25T23:59:59.000Z

30

Inelastic Scattering of 20-kev Electrons in Metal Vapors  

Science Journals Connector (OSTI)

The low-energy losses of 20-kev electrons passing through the vapors of Zn, Cd, Hg, Na, K, Mg, Ca, Sb, Pb, and KCl, have been measured by using an electrostatic analyzer previously used for measuring electron energy losses in thin metal films. The atomic transitions corresponding to the measured energy losses are in many cases fairly easily established. However, there remain some which are questionable due to the fact that there is more than one feasible transition with energy differences of the order of the given energy loss. It is established that the principal interaction results in the excitation from the ground state of the neutral atom to the first excited levelthe resonance excitation. It is also found that dipole excitations predominate

Lewis B. Leder

1957-09-15T23:59:59.000Z

31

High aspect ratio hard x-ray (> 100 keV) imager to measure hot electron preheat for indirectly driven capsule implosions on the National Ignition Facility  

SciTech Connect

We have fielded a multi-pinhole, hard x-ray (> 100 keV) imager to measure the spatially-resolved bremsstrahlung emission from energetic electrons slowing in a plastic ablator shell during indirectly driven implosions at the National Ignition Facility. These electrons are generated in laser plasma interactions, and are a source of preheat to the deuterium-tritium fuel that could limit the compressibility required for ignition and burn. Our hard x-ray imaging measurements allow to set an upper limit to the DT fuel preheat, which we find is acceptable in current capsule implosions on the NIF.

Doppner, T; Dewald, E; Divol, L; Burns, S; Izumi, N; Kline, J; LaCaille, G; McNaney, J; Prasad, R; Thomas, C A; Glenzer, S H; Landen, O; Author, A; Author, S G; Author, T

2012-05-01T23:59:59.000Z

32

New Observations of the Solar 0.5-5 keV Soft X-ray Spectrum  

E-Print Network (OSTI)

The solar corona is orders of magnitude hotter than the underlying photosphere, but how the corona attains such high temperatures is still not understood. Soft X-ray (SXR) emission provides important diagnostics for thermal processes in the high-temperature corona, and is also an important driver of ionospheric dynamics at Earth. There is a crucial observational gap between ~0.2 and ~4 keV, outside the ranges of existing spectrometers. We present observations from a new SXR spectrometer, the Amptek X123-SDD, which measured the spatially-integrated solar spectral irradiance from ~0.5 to ~5 keV, with ~0.15 keV FWHM resolution, during sounding rocket flights on 2012 June 23 and 2013 October 21. These measurements show that the highly variable SXR emission is orders of magnitude greater than that during the deep minimum of 2009, even with only weak activity. The observed spectra show significant high-temperature (5-10 MK) emission and are well fit by simple power-law temperature distributions with indices of ~6, ...

Caspi, Amir; Warren, Harry P

2015-01-01T23:59:59.000Z

33

Plural Scattering of 20-kev Electrons in Aluminum  

Science Journals Connector (OSTI)

The angular and energy distribution of 20-kev electrons, scattered at very small angles (<10-2 rad) by transmission through aluminum foils, are compared with the theory of plural inelastic scattering, under the following assumptions: (a) The probability of elastic scattering at very small angles is negligibly small in comparison with the probability of inelastic scattering. (b) Inelastic scattering occurs predominantly through sharply defined "characteristic" energy losses, whose number follows a Poisson statistical distribution. (c) The angular distribution in each loss follows a simple law: ?(?)?(?E2+?2)-1. (d) The cumulative angular distribution from plural inelastic scattering is obtained by repeated "folding" of ?(?) with the angular spread of the incident beam. The angular distribution of zero-loss electrons is found to be substantially independent of the foil thickness; the normalized angular distributions of the first- and second-loss peaks are accurately fitted by the "folding" calculation; Poisson statistics gives a good approximation to the observed numbers of energy losses. The value of ? for five observations on foils of thicknesses 650-2580 A is approximately 810 A, independent of thickness; systematic errors in the method of observation may render this value up to 20% higher than the mean free path corresponding to the total cross section.

L. Marton; J. Arol Simpson; H. A. Fowler; N. Swanson

1962-04-01T23:59:59.000Z

34

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

SciTech Connect

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

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

2000-03-22T23:59:59.000Z

35

Time resolved side scatter diagnostics at NOVA  

SciTech Connect

Side scattering of the radiation during the interaction of a laser beam with the long scale length plasma in hohlraum is a difficult problem of relevance to the viability of ICF. It is important to measure the absolute amount of the laser side scatter as well as the angular distribution of that scatter. The OSA diagnostics has been implemented on NOVA to measure these quantities. We have implemented a fiber-optically coupled streak camera to measure the temporally and angularly resolved side scatter radiation at 351 nm at 9 different angles. Filtered PIN diodes were positioned at 31 various angles in the E-field planed and B-field plane of the incident probe beam to sample and measure the scattered radiation at the 351 nm wavelength of the probe. The diode data was used to calibrate the Brillouin power received by the 9 strategically located fiber optic channels. This presentation will describe the OSA and associated diagnostics.

Kyrala, G.A.; Evans, S.C.; Jimerson, J.R.; Fernandez, J.C.

1996-06-01T23:59:59.000Z

36

Multipole mixtures of gamma-ray transitions depopulating the 1318-keV (2-) and 1518-keV (6+ or 7-) states in Yb174  

Science Journals Connector (OSTI)

An E1+E3 (?1.9%M2) multipole mixture has been observed for the 1242-keV (2- ? 2+) transition depopulating the J?, K=2-,2 octupole vibrational level at 1318 keV in Yb174 following the decay of Lu174 and Lum174. The internal-conversion cfficient for this transition and the ?-? directional correlation for the 1242-76.5-keV cascade have been remeasured, and the results yield the unique set of multipole mixing ratios ?1(M2E1)=0.050.09 and ?2(E3E1)=0.190.08 which correspond to a multipole admixture of E1(96.3-2.6+1.7%)+M2(0.2-0.2+1.7%)+E3(3.5-2.1+3.8%). The M2 multipolarity of the 1318-keV (2- ? 0+) transition was also verified from the measured internal-conversion coefficient. A multipole admixture of E3 (<27%M2) for the 1065-keV transition was deduced from available data, and the ratios of reduced transition probabilities for the transitions depopulating the 1318-keV level were calculated and compared with rotational-model predictions. Using the previously measured half-life of the 2- level, absolute transition probabilities and hindrance factors were obtained for these transitions, and B(E3) values were compared with theoretical microscopic model calculations. Partial correlation coefficients for the 992-keV transition depopulating the 1518-keV isomeric state were determined using the ?-? directional correlation data. Multipole admixtures consistent with the correlation data (and internal conversion data for the 7- case) are E2+(278%)M1 for the choice of 6+ and E1(687%)+M2(52%)+E3(277%) for the choice of 7- for the 1518-keV level. Using the reported half-life for that level, the hindrance factors were obtained for the K-forbidden transitions depopulating the level for each choice of spin assignment and these are compared with hindrance factors observed for known K-forbidden transitions.[RADIOACTIVITY Lu174 [from Yb174(d,2n)] measured I?, ??(?), I(ce); deduced J, ?, ICC, ? mixing, B(E3).

A. G. Schmidt; J. W. Mihelich; E. G. Funk

1974-06-01T23:59:59.000Z

37

Measurement of the differential neutron-deuteron scattering cross section in the energy range from 100 keV to 600 keV using a proportional counter  

E-Print Network (OSTI)

The angular distribution of neutron-deuteron scattering was investigated using the proportional counter P2 simultaneously as scattering target and detector for the recoil deuterons. The measurements were carried out using monoenergetic neutrons in the energy range from 150 keV to 500 keV. Various techniques were employed to reduce distortions of the experimental pulse-height distribution by photon-induced events. The experimental data were compared with realistic simulations which were carried out using different evaluated data sets. This comparison allows to conclude on inconsistencies in the evaluations.

Nolte, R; Plompen, A; Rttger, S

2014-01-01T23:59:59.000Z

38

Manufacturers of Noncompliant Products Agree to Civil Penalties to Resolve  

NLE Websites -- All DOE Office Websites (Extended Search)

Manufacturers of Noncompliant Products Agree to Civil Penalties to Manufacturers of Noncompliant Products Agree to Civil Penalties to Resolve Enforcement Actions Manufacturers of Noncompliant Products Agree to Civil Penalties to Resolve Enforcement Actions July 1, 2013 - 11:17am Addthis The Department of Energy has settled civil penalty actions it initiated against nine companies for the manufacture and sale in the United States of products that fail to meet federal energy conservation standards. The covered consumer products and commercial/industrial equipment found in violation included automatic commercial ice makers, distribution transformers, external power supplies, showerheads and lighting products. The companies ceased all sales within the United States of the products that violated federal energy conservation standards.

39

Manufacturers of Noncompliant Products Agree to Civil Penalties to Resolve  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Manufacturers of Noncompliant Products Agree to Civil Penalties to Manufacturers of Noncompliant Products Agree to Civil Penalties to Resolve Enforcement Actions Manufacturers of Noncompliant Products Agree to Civil Penalties to Resolve Enforcement Actions July 1, 2013 - 11:17am Addthis The Department of Energy has settled civil penalty actions it initiated against nine companies for the manufacture and sale in the United States of products that fail to meet federal energy conservation standards. The covered consumer products and commercial/industrial equipment found in violation included automatic commercial ice makers, distribution transformers, external power supplies, showerheads and lighting products. The companies ceased all sales within the United States of the products that violated federal energy conservation standards.

40

Origin of the 871-keV gamma ray and the ``oxide'' attribute  

SciTech Connect

This work concludes the investigation of the oxide attribute of current interest for the characterization of stored plutonium. Originally it was believed that the presence of oxide could be ascertained by measurement of the 871-keV line in a high-resolution gamma-ray spectrum. However, recent work has suggested that the 871-keV gamma ray in plutonium oxide arises from the reaction {sup 14}N({alpha},p){sup 17}O rather than the inelastic scattering reaction {sup 17}O({alpha},{alpha}{prime}){sup 17}O*. This conclusion, though initially surprising, was obtained during efforts to determine the relative importance of americium and plutonium alpha-particle decay for the production of the 871-keV gamma ray. Several questions were raised by previous experiments: What role, if any does {sup 17}O have in the generation of the 871-keV gamma ray? How does sufficient nitrogen come to be present in plutonium oxide? Under what conditions is the 871-keV gamma ray measurable in plutonium oxide? This paper describes the answers to these questions.

AJ Peurrung; RJ Arthur; BD Geelhood; RD Scheele; RJ Elovich; SL Pratt

2000-03-22T23:59:59.000Z

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Measurement of the 183 keV Resonance in 17O(p,alpha)14N using a Novel Technique  

SciTech Connect

We have developed a novel technique for measurements of low energy (p,alpha) reactions using heavy ion beams and a differentially-pumped windowless gas target. We applied this new approach to study the 183 keV resonance in the 17O(p,alpha)14}N reaction. We report a resonance energy (center-of-mass) of 183.5{+0.1}{-0.4} keV, a resonance strength of 1.70 +/- 0.15 meV, and set an upper limit (95\\% confidence) on the total width of the state of < 0.1 keV. This resonance is important for the 17O(p,alpha)14}N reaction rate, and we find that 18F production is significantly decreased in low mass ONeMg novae but less affected in more energetic novae. We also report the first determination of the stopping power for oxygen ions in hydrogen gas near the peak of the Bragg curve (E=193 keV/u) to be (63+/-1)e-15 eV-cm2.

Moazen, Brian H [ORNL; Bardayan, Daniel W [ORNL; Blackmon, Jeff C [ORNL; Chae, Kyung Yuk [ORNL; Chipps, Kelly A [ORNL; Domizioli, Carlo P [ORNL; Fitzgerald, Ryan [ORNL; Greife, Uwe [ORNL; Hix, William Raphael [ORNL; Grzywacz-Jones, Kate L [ORNL; KOZUB, RAYMOND L [ORNL; Lingerfelt, Eric J [ORNL; Livesay, Jake [ORNL; Nesaraja, Caroline D [ORNL; Pain, Steven D [ORNL; Roberts, Luke F [ORNL; Shriner, Jr., John F [ORNL; Smith, Michael Scott [ORNL; Thomas, Jeffrey S [ORNL

2007-01-01T23:59:59.000Z

42

Ion and photon emission from keV cluster impacts on surfaces  

E-Print Network (OSTI)

molecular SF6tx- (8 keV) tuojectiles than for the same energy monoatomic Cs+ beam. Monoatomic Cs+ was used for comparison because Cs atomic weight is close to the molecular weight of SF6 - 133 amu for Cs+ and 146 amu for SF6. The difference in projectile... molecular SF6tx- (8 keV) tuojectiles than for the same energy monoatomic Cs+ beam. Monoatomic Cs+ was used for comparison because Cs atomic weight is close to the molecular weight of SF6 - 133 amu for Cs+ and 146 amu for SF6. The difference in projectile...

Yau, Alice Yau-Lic

2012-06-07T23:59:59.000Z

43

Time-Resolved Photoluminescence and Photovoltaics  

SciTech Connect

The time-resolved photoluminescence (TRPL) technique and its ability to characterize recombination in bulk photovoltaic semiconductor materials are reviewed. Results from a variety of materials and a few recent studies are summarized and compared.

Metzger, W. K.; Ahrenkiel, R. K.; Dippo, P.; Geisz, J.; Wanlass, M. W.; Kurtz, S.

2005-01-01T23:59:59.000Z

44

Unified Resolve 2014: A Proof of Concept for Radiological Support...  

Office of Environmental Management (EM)

Unified Resolve 2014: A Proof of Concept for Radiological Support to Incident Commanders Unified Resolve 2014: A Proof of Concept for Radiological Support to Incident Commanders...

45

Verifying the Benefits and Resolving the Issues in the Commercializati...  

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

the Benefits and Resolving the Issues in the Commercialization of Ethanol Containing Diesel Fuels Verifying the Benefits and Resolving the Issues in the Commercialization of...

46

Resolving Code and Standard Barriers to Building America Innovations...  

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

Resolving Code and Standard Barriers to Building America Innovations - 2014 BTO Peer Review Resolving Code and Standard Barriers to Building America Innovations - 2014 BTO Peer...

47

A 3.55 keV Photon Line and its Morphology from a 3.55 keV ALP Line  

E-Print Network (OSTI)

Galaxy clusters can efficiently convert axion-like particles (ALPs) to photons. We propose that the recently claimed detection of a 3.55--3.57 keV line in the stacked spectra of a large number of galaxy clusters and the Andromeda galaxy may originate from the decay of either a scalar or fermionic $7.1$ keV dark matter species into an axion-like particle (ALP) of mass $m_{a} \\lesssim 6\\cdot 10^{-11}~{\\rm eV}$, which subsequently converts to a photon in the cluster magnetic field. In contrast to models in which the photon line arises directly from dark matter decay or annihilation, this can explain the anomalous line strength in the Perseus cluster. As axion-photon conversion scales as $B^2$ and cool core clusters have high central magnetic fields, this model can also explains the observed peaking of the line emission in the cool cores of the Perseus, Ophiuchus and Centaurus clusters, as opposed to the much larger dark matter halos. We describe distinctive predictions of this scenario for future observations.

Michele Cicoli; Joseph P. Conlon; M. C. David Marsh; Markus Rummel

2014-03-10T23:59:59.000Z

48

Spectral resolvability of iterated rippled noise  

Science Journals Connector (OSTI)

A forward?masking experiment was used to estimate the spectral ripple of iterated rippled noise (IRN) that is possibly resolved by the auditory system. Tonal signals were placed at spectral peaks and valleys of IRN maskers for a wide variety of IRN conditions that included different delays number of iterations and stimulus durations. The differences in the forward?masked thresholds of tones at spectral peaks and valleys were used to estimate spectral resolvability and these results were compared to estimates obtained from a gamma?tone filter bank. The IRN spectrum has spectral peaks that are harmonics of the reciprocal of the delay used to generate IRN stimuli. As the number of iterations in the generation of IRN stimuli increases so does the difference in the spectral peak?to?valley ratio. For high number of iterations long delays and long durations evidence for spectral resolvability existed up to the 6th harmonic. For all other conditions spectral resolvability appeared to disappear at harmonics lower than the 6th or was not measurable at all. These data will be discussed in terms of the role spectral resolvability might play in processing the pitch pitch strength and timbre of IRN stimuli. [Work supported by a grant from NIDCD.

2005-01-01T23:59:59.000Z

49

Study of photon attenuation coefficients of some multielement materials. [123-1250 keV  

SciTech Connect

Total photon mass attenuation of six multielement shielding materials (concrete, plaster of paris, quick lime, black cement, white cement, and silica) is measured in the 123- to 1,250-keV energy range. The experimental results are analyzed in terms of cross sections, effective atomic numbers, and electron densities. Considerable sensitivity of the total mass attenuation coefficients and effective atomic numbers to variations in oxygen content are found in these multielement materials.

Bhandal, G.S. (N.J.S.A. Government Coll., Punjab (India)); Singh, K. (Guru Nanak Dev Univ., Amritsar (India). Dept. of Physics)

1994-03-01T23:59:59.000Z

50

HELIOSPHERIC NEUTRAL ATOM SPECTRA BETWEEN 0.01 AND 6 keV FROM IBEX  

SciTech Connect

Since 2008 December, the Interstellar Boundary Explorer (IBEX) has been making detailed observations of neutrals from the boundaries of the heliosphere using two neutral atom cameras with overlapping energy ranges. The unexpected, yet defining feature discovered by IBEX is a Ribbon that extends over the energy range from about 0.2 to 6 keV. This Ribbon is superposed on a more uniform, globally distributed heliospheric neutral population. With some important exceptions, the focus of early IBEX studies has been on neutral atoms with energies greater than {approx}0.5 keV. With nearly three years of science observations, enough low-energy neutral atom measurements have been accumulated to extend IBEX observations to energies less than {approx}0.5 keV. Using the energy overlap of the sensors to identify and remove backgrounds, energy spectra over the entire IBEX energy range are produced. However, contributions by interstellar neutrals to the energy spectrum below 0.2 keV may not be completely removed. Compared with spectra at higher energies, neutral atom spectra at lower energies do not vary much from location to location in the sky, including in the direction of the IBEX Ribbon. Neutral fluxes are used to show that low energy ions contribute approximately the same thermal pressure as higher energy ions in the heliosheath. However, contributions to the dynamic pressure are very high unless there is, for example, turbulence in the heliosheath with fluctuations of the order of 50-100 km s{sup -1}.

Fuselier, S. A.; Ghielmetti, A. G.; Petrinec, S. M.; Trattner, K. J., E-mail: sfuselier@swri.edu, E-mail: fallegrini@swri.edu [Lockheed Martin Advanced Technology Center, Palo Alto, CA 94304 (United States); and others

2012-07-20T23:59:59.000Z

51

Total Neutron Cross Section for Uranium from 20 kev to 20 Mev  

Science Journals Connector (OSTI)

The total neutron cross section of normal uranium has been measured for neutron energies from 20 kev to 7.6 Mev and at 17, 19, and 20 Mev. When combined with other published work in the 7-14 Mev range, the result is a smooth cross-section curve up to 20 Mev. The curve fits smoothly on the surface showing total neutron cross section as a function of both atomic weight and neutron energy.

R. L. Henkel; L. Cranberg; G. A. Jarvis; R. Nobles; J. E. Perry; Jr.

1954-04-01T23:59:59.000Z

52

Low Dose Radiation Research Program: 12.5 keV Xray Microbeam Bystander  

NLE Websites -- All DOE Office Websites (Extended Search)

12.5 keV Xray Microbeam Bystander Studies With Human Mammary 12.5 keV Xray Microbeam Bystander Studies With Human Mammary Epithelial Cells and Fibroblasts Authors: E. A. Blakely1, R. I. Schwarz1, A. C. Thompson2, K. A. Bjornstad1, P. Y. Chang1,3 C.J. Rosen1, and D. Sudar1 Institutions: Divisions of 1Life Sciences and 2Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA. and 3SRI International, Menlo Park, CA. We are using a novel x-ray Microprobe Beamline at the Advanced Light Source (ALS) at LBNL to investigate bystander effects of low doses in well characterized human mammary epithelial cells (HMEC) and human skin fibroblasts (HSF). The ALS facility is capable of producing a beam of 12.5 keV x-rays with a focussed spot size of __m_ and a wide range of doses and dose-rates. Unlike normal x-ray sources, this beam has a very small background of either low-

53

Effective field theory and keV lines from dark matter  

E-Print Network (OSTI)

We survey operators that can lead to a keV photon line from dark matter decay or annihilation. We are motivated in part by recent claims of an unexplained 3.5 keV line in galaxy clusters and in Andromeda, but our results could apply to any hypothetical line observed in this energy range. We find that given the amount of flux that is observable, explanations in terms of decay are more plausible than annihilation, at least if the annihilation is directly to Standard Model states rather than intermediate particles. The decay case can be explained by a scalar or pseudoscalar field coupling to photons suppressed by a scale not far below the reduced Planck mass, which can be taken as a tantalizing hint of high-scale physics. The scalar case is particularly interesting from the effective field theory viewpoint, and we discuss it at some length. Because of a quartically divergent mass correction, naturalness strongly suggests the theory should be cut off at or below the 1000 TeV scale. The most plausible such natural UV completion would involve supersymmetry. These bottom-up arguments reproduce expectations from top-down considerations of the physics of moduli. A keV line could also arise from the decay of a sterile neutrino, in which case a renormalizable UV completion exists and no direct inference about high-scale physics is possible.

Rebecca Krall; Matthew Reece; Thomas Roxlo

2014-03-05T23:59:59.000Z

54

MMS establishes team to resolve royalty disputes  

SciTech Connect

This paper reports that the U.S. Minerals Management Service has set up a permanent negotiating team to resolve royalty disputes with producers. MMS plans to use the team approach to negotiate multiple settlements in single, marathon negotiations covering issues such as production monitoring, production valuation, royalty reporting, and royalty payments.

Not Available

1992-06-22T23:59:59.000Z

55

RESOLVING BEAM TRANSPORT PROBLEMS IN ELECTROSTATIC ACCELERATORS  

E-Print Network (OSTI)

RESOLVING BEAM TRANSPORT PROBLEMS IN ELECTROSTATIC ACCELERATORS J. D. LARSON (*) Oak Ridge National are frequently encounte- red during the design, operation and upgrading of electrostatic accelerators. Examples are provided of analytic procedures that clarify accelerator ion optics and lead to more effective beam

Boyer, Edmond

56

Cloud Tracking in Cloud-Resolving Models  

E-Print Network (OSTI)

Cloud Tracking in Cloud-Resolving Models RMetS Conference 4th September 2007 Bob Plant Department of Meteorology, University of Reading, UK #12;Introduction Obtain life cycle statistics for clouds in CRM simulations What is the distribution of cloud lifetimes? What factors determine the lifetime of an individual

Plant, Robert

57

TFTR neutral-beam power system  

SciTech Connect

The TFTR Neutral Beam Power System (NBPS) consists of the accelerator grid power supply and the auxiliary power supplies required to operate the TFTR 120-keV ion sources. The current configuration of the NBPS including the 11-MVA accelerator grid power supply and the Arc and Filament power supplies isolated for operation at accelerator grid voltages up to 120 kV, is described. The prototype NBPS has been assembled at the Princeton Plasma Physics Laboratory and has been operated. The results of the initial operation and the description and resolution of some of the technical problems encountered during the commissioning tests are presented.

Winje, R.A.

1982-10-01T23:59:59.000Z

58

Stopping Cross Sections of Some Hydrocarbon Gases for 40-200-keV Helium Ions  

Science Journals Connector (OSTI)

The stopping cross sections of air, CH4, C2H2, C2H4, C3H8, (CH2)3, and C3H6 have been measured for incident helium ions in the energy range 40 to 200 keV. The data are in good agreement with previous experiment work, and have standard deviations between 2 and 6%. They obey an energy dependence ?=?E12 in accord with the calculation of Lindhard and Scharff. It has been shown that while there is probably an effect due to chemical binding on the helium-ion stopping cross sections of hydrocarbons, this effect is small.

John T. Park

1965-05-31T23:59:59.000Z

59

A Global Cloud Resolving Model Goals  

NLE Websites -- All DOE Office Websites (Extended Search)

Cloud Resolving Model Cloud Resolving Model Goals Uniform global horizontal grid spacing of 4 km or better ("cloud permitting") 100 or more layers up to at least the stratopause Parameterizations of microphysics, turbulence (including small clouds), and radiation Execution speed of at least several simulated days per wall-clock day on immediately available systems Annual cycle simulation by end of 2011. Motivations Parameterizations are still problematic. There are no spectral gaps. The equations themselves change at high resolution. GCRMs will be used for NWP within 10 years. GCRMs will be used for climate time-slices shortly thereafter. It's going to take some time to learn how to do GCRMs well. Scaling Science Length, Spatial extent, #Atoms, Weak scaling Time scale

60

RESOLVED: Projectb filesystem outage July 9, 2012  

NLE Websites -- All DOE Office Websites (Extended Search)

RESOLVED: Projectb filesystem outage July 9, 2012 RESOLVED: Projectb filesystem outage July 9, 2012 RESOLVED: Projectb filesystem outage July 9, 2012 July 9, 2012 (0 Comments) The projectb filesystem had a hardware failure that potentially generated I/O errors. The filesystem logs indicate that the earliest abnormal event on the filesystem occurred at 9:19AM and the filesystem was taken down for maintenance at 10:42AM. The filesystem returned to service at 11:20AM. Jobs running on the cluster would not have been able to read from or write to the projectb filesystem between 10:42AM and 11:20AM. Between 9:19AM and 10:42AM one out of the 20 GPFS controllers on projectb was down, and didn't failover (as it should have). This means: 1/20 file I/O operations could have failed between 9:19AM and 10:42AM If your job was performing a large number of short reads and writes, then

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Energy-Loss Spectra and Collision Cross Sections for Impact of 20-120-keV Positive Ions on Molecular Nitrogen  

Science Journals Connector (OSTI)

Inelastic energy-loss spectra induced by impact of H+, H2+, and Ar+ on N2 have been measured at incident ion energies of 20-120 keV, with an energy resolution of about 2 eV. Prominent peaks are observed at energy losses of 9.5 and 13.8 eV. The first of these is well resolved and is attributed to excitation of the Lyman-Birge-Hopfield (LBH) system of N2. The peak at 13.8 eV is believed due primarily to excitation of the b?u1 band of the Worley-Jenkins series. The locations of these features on the energy-loss scale do not agree with results of the electron impact work of others and, in general, show trends with projectile velocity that are consistent with an assumed enhancement of excitation to higher vibrational states with the heavier particles. Collision cross sections for excitation of the two peaks are presented, as well as the total ionization cross section and the cross section for total inelastic processes in the case of proton impact.

F. D. Schowengerdt and John T. Park

1970-03-01T23:59:59.000Z

62

Partial widths and gamma-ray decay of the 2883- and 5037-keV levels in Sc41  

Science Journals Connector (OSTI)

Proton and ?-ray decay widths for the 7/2+ resonance at 2883 keV excitation in Sc41 have been deduced from measurements of ??? and the (p,?) resonance strength. Our results are ??=0.0580.007 eV and ?p=0.0900.011 eV. Angular distributions measured for the 5037(92+)?2883 keV and 2883?0(72-) keV transitions confirm the J=72 assignment for the 2883-keV level. The linear polarization was measured for the 2883?0 keV transition and confirms the positive parity assignment. In addition, the (p,?) strength for the 5037-keV level was measured, and our strength results for both resonances are lower than those of Youngblood, Wildenthal, and Class by a factor of 1.4.[NUCLEAR REACTIONS Ca40(p,?), Ep=1.84,4.05 MeV; measured ?(E?,?), Q, P(90?), resonance strengths, I?. Sc41 deduced levels, J?, ??, ?p, CSp2. Enriched target.

R. L. Kozub; B. E. Cooke; J. R. Leslie; B. C. Robertson

1977-07-01T23:59:59.000Z

63

EMISSION LINES BETWEEN 1 AND 2 keV IN COMETARY X-RAY SPECTRA  

SciTech Connect

We present the detection of new cometary X-ray emission lines in the 1.0-2.0 keV range using a sample of comets observed with the Chandra X-Ray Observatory and ACIS spectrometer. We have selected five comets from the Chandra sample with good signal-to-noise spectra. The surveyed comets are C/1999 S4 (LINEAR), C/1999 T1 (McNaught-Hartley), 153P/2002 (Ikeya-Zhang), 2P/2003 (Encke), and C/2008 8P (Tuttle). We modeled the spectra with an extended version of our solar wind charge exchange (SWCX) emission model. Above 1 keV, we find Ikeya-Zhang to have strong emission lines at 1340 and 1850 eV which we identify as being created by SWCX lines of Mg XI and Si XIII, respectively, and weaker emission lines at 1470, 1600, and 1950 eV formed by SWCX of Mg XII, Mg XI, and Si XIV, respectively. The Mg XI and XII and Si XIII and XIV lines are detected at a significant level for the other comets in our sample (LS4, MH, Encke, 8P), and these lines promise additional diagnostics to be included in SWCX models. The silicon lines in the 1700-2000 eV range are detected for all comets, but with the rising background and decreasing cometary emission, we caution that these detections need further confirmation with higher resolution instruments.

Ewing, Ian; Christian, Damian J. [Department of Physics and Astronomy, California State University, 18111 Nordhoff Street, Northridge, CA 91330 (United States)] [Department of Physics and Astronomy, California State University, 18111 Nordhoff Street, Northridge, CA 91330 (United States); Bodewits, Dennis [Department of Astronomy, University of Maryland, College Park, MD 20742 (United States)] [Department of Astronomy, University of Maryland, College Park, MD 20742 (United States); Dennerl, Konrad [Max-Planck-Institut fuer extraterrestrische Physik, Postfach 1312, D-85741 Garching Germany (Germany)] [Max-Planck-Institut fuer extraterrestrische Physik, Postfach 1312, D-85741 Garching Germany (Germany); Lisse, Carey M. [Planetary Exploration Group, Space Department, Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Rd, Laurel, MD 20723 (United States)] [Planetary Exploration Group, Space Department, Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Rd, Laurel, MD 20723 (United States); Wolk, Scott J., E-mail: ian.ewing.794@my.csun.edu, E-mail: daman.christian@csun.edu [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)

2013-01-20T23:59:59.000Z

64

Effective field theory and keV lines from dark matter  

E-Print Network (OSTI)

We survey operators that can lead to a keV photon line from dark matter decay or annihilation. We are motivated in part by recent claims of an unexplained 3.5 keV line in galaxy clusters and in Andromeda, but our results could apply to any hypothetical line observed in this energy range. We find that given the amount of flux that is observable, explanations in terms of decay are more plausible than annihilation, at least if the annihilation is directly to Standard Model states rather than intermediate particles. The decay case can be explained by a scalar or pseudoscalar field coupling to photons suppressed by a scale not far below the reduced Planck mass, which can be taken as a tantalizing hint of high-scale physics. The scalar case is particularly interesting from the effective field theory viewpoint, and we discuss it at some length. Because of a quartically divergent mass correction, naturalness strongly suggests the theory should be cut off at or below the 1000 TeV scale. The most plausible such natural...

Krall, Rebecca; Roxlo, Thomas

2014-01-01T23:59:59.000Z

65

Spatially and polarization resolved plasmon mediated transmission through continuous metal  

E-Print Network (OSTI)

Spatially and polarization resolved plasmon mediated transmission through continuous metal films Y transmission through an embedded undulated continuous thin metal film under normal incidence. 1D undulations resolved, polarization independent transmission. Whereas the needed submicron microstructure lends itself

Boyer, Edmond

66

Power Plant Power Plant  

E-Print Network (OSTI)

Basin Center for Geothermal Energy at University of Nevada, Reno (UNR) 2 Nevada Geodetic LaboratoryStillwater Power Plant Wabuska Power Plant Casa Diablo Power Plant Glass Mountain Geothermal Area Lassen Geothermal Area Coso Hot Springs Power Plants Lake City Geothermal Area Thermo Geothermal Area

Tingley, Joseph V.

67

Power Factor Reactive Power  

E-Print Network (OSTI)

power: 130 watts Induction motor PSERC Incandescent lights 0 0.002 0.004 0.006 0.008 0.01 0.012 0.014 0 power: 150 watts #12;Page 4 PSERC Incandescent Lights PSERC Induction motor with no load #12;Page 5 Incandescent Lights #12;Page 7 PSERC Incandescent lights power: Power = 118 V x 1.3 A = 153 W = 0.15 kW = power

68

Energy Shortage of Nonthermal Electrons in Powering a Solar  

Science Journals Connector (OSTI)

Within a deka-keV energy range, the power-law electron beams interacting with the solar atmosphere also result in the power-law bremsstrahlung of hard X-rays. The energy spectrum of electrons can thus be deduced from the observed hard X-ray spectrum, and the total energy carried by accelerated electrons can then be estimated. For quite a long time, one has always assumed the lower energy cutoff (Ec) of the power-law electron beams to be around 20 keV, an assumption that constitutes a main ingredient of the so-called standard picture of a solar flare, since the nonthermal electrons are substantial in powering a solar flare. However, there is in fact no solid observational basis for Ec = 20 keV. Here we present a quantitative method to determine Ec and its application to 14 BATSE/Compton Gamma Ray Observatory hard X-ray events. We find that Ec, varying from 47 to 141 keV in our samples, is on average 76.4 keV. The total energy carried by nonthermal electrons is therefore shown to be at least 1 order of magnitude lower than that derived by taking Ec = 20 keV. This energy shortage of nonthermal electrons in our sample hard X-ray events conflicts with the widely accepted scenario of a solar flare.

W. Q. Gan; Y. P. Li; J. Chang

2001-01-01T23:59:59.000Z

69

Time-resolved x-ray diagnostics  

SciTech Connect

Techniques for time-resolved x-ray diagnostics will be reviewed with emphasis on systems utilizing x-ray diodes or scintillators. System design concerns for high-bandwidth (> 1 GHz) diagnostics will be emphasized. The limitations of a coaxial cable system and a technique for equalizing to improve bandwidth of such a system will be reviewed. Characteristics of new multi-GHz amplifiers will be presented. An example of a complete operational system on the Los Alamos Helios laser will be presented which has a bandwidth near 3 GHz over 38 m of coax. The system includes the cable, an amplifier, an oscilloscope, and a digital camera readout.

Lyons, P.B.

1981-01-01T23:59:59.000Z

70

Student research with 400keV beams: {sup 13}N radioisotope production target development  

SciTech Connect

The AN400 Van de Graaff accelerator at the Minnesota State University, Mankato, Applied Nuclear Science Lab has demonstrated utility as an accessible and versatile platform for student research. Despite the limits of low energy, the research team successfully developed projects with applications to the wider radioisotope production community. A target system has been developed for producing and extracting {sup 13}N by the {sup 12}C(d,n){sup 13}N reaction below 400keV. The system is both reusable and robust, with future applications to higher energy machines producing this important radioisotope for physiological imaging studies with Positron Emission Tomography. Up to 36({+-}1)% of the {sup 13}N was extracted from the graphite matrix when 35 A current was externally applied to the graphite target while simultaneously flushing the target chamber with CO{sub 2} gas.

Fru, L. Che; Clymer, J.; Compton, N.; Cotter, J.; Dam, H.; Lesko, Z.; Pautzke, J.; Prokop, C.; Swanson, L.; Roberts, A. D. [Department of Physics and Astronomy, Minnesota State University, Trafton Science Center N141, Mankato MN 56001 (United States)

2013-04-19T23:59:59.000Z

71

Photoeffect cross sections of several rare-earth elements for 323-keV photons  

Science Journals Connector (OSTI)

Total-attenuation cross sections of the oxides of rare-earth elements such as La, Ce, Pr, Nd, Sm, Gd, Dy, Ho, and Er, and also NaNO3 and NaNO2 have been measured in a narrow-beam geometry setup at 323 keV. The total-attenuation cross section for oxygen was obtained as the difference in NaNO3 and NaNO2 cross sections. Using this, the total-attenuation cross sections of the individual lanthanides have been obtained with the aid of the mixture rule. From these, the photoeffect cross sections were derived by subtracting the scattering contribution. These values are found to agree well with Scofields theoretical data [University of California Report No. UCRL 51326, 1973 (unpublished)].

T. K. Umesh, S. J. Anasuya, J. Shylaja Kumari, Channe Gowda, K. P. Gopinathan Nair, and Ramakrishna Gowda

1992-02-01T23:59:59.000Z

72

SciTech Connect: Time-resolved carrier distributions in graphene  

NLE Websites -- All DOE Office Websites (Extended Search)

Conference: Time-resolved carrier distributions in graphene Citation Details In-Document Search Title: Time-resolved carrier distributions in graphene Time-resolved carrier...

73

Mass-resolved retarding field energy analyzer and its measurement of ion energy distribution in helicon plasma  

E-Print Network (OSTI)

Mass-resolved retarding field energy analyzer and its measurement of ion energy distribution analyzer and a quadrupole mass spectrometer (QMS), has been developed to simultaneously measure the energy) are measured at rf power of 1000 W. The results show that the fairly broad energy distributions of different

Zexian, Cao

74

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

Science Journals Connector (OSTI)

Abstract A series of new total cross section measurements for the stable molybdenum isotopes of 92,94,95,96,98,100Mo covering the energy range between 1 keV and 620 keV was performed at the Gaerttner LINAC Center at Rensselaer Polytechnic Institute. New high-accuracy resonance parameters were extracted from an analysis of the data using the multilevel R-matrix Bayesian code SAMMY. In the unresolved resonance region, average resonance parameters and fits to the total cross sections were obtained using the Bayesian Hauser-Feshbach statistical model code FITACS.

R. Bahran; D. Barry; G. Leinweber; M. Rapp; R. Block; A. Daskalakis; B. McDermott; S. Piela; E. Blain; Y. Danon

2014-01-01T23:59:59.000Z

75

Plasma focus based flash hard X-ray source in the 100 keV region with reproducible spectrum  

Science Journals Connector (OSTI)

A pulsed hard X-ray source with shot to shot reproducible spectrum, based on a 4.7 kJ small-chamber Mather-type plasma focus device, is presented. The hard X-ray output spectrum was measured in a single shot basis by differential absorption on metallic plates. The measured spectra have a single dominant peak around 75 keV and a spectral bandwidth covering the 40150 keV range. A hard X-ray dose of ( 53 3 ) ?Gy per shot was measured on axis at 53 cm from the source, and found to be uniform within a half aperture angle of 6.

V. Raspa; P. Knoblauch; F. Di Lorenzo; C. Moreno

2010-01-01T23:59:59.000Z

76

Generalized precedent logics for resolving insecurity dilemmas  

E-Print Network (OSTI)

This paper proposes the development and application of a series of gradually more powerful "reflective" logical procedures to increasingly complex and realistic sets of data on collective insecurity dilemmas. Such procedures ...

Alker, Hayward R.

1980-01-01T23:59:59.000Z

77

3-10 keV and 0. 1- to 2-MeV observations of four gamma-ray bursts  

SciTech Connect

Four catalogued ..gamma..-ray bursts that occurred between 79/3/7 and 79/7/31 have been observed over the 3 to 10 keV range by a joint NRL/Los Alamos experiment on the Air Force P78-1 satellite. The bursts were also well observed by members of the interplanetary network. In this paper we present hardness ratios, x-ray/..gamma..-ray luminosity ratios, and time histories. The most significant results presented herein can be summarized as follows: (1) gamma-ray bursters can emit fairly strongly at x-ray energies near the time of the ..gamma.. burst with L/sub x//L/sub ..gamma../ approx. .02 (L/sub x/ approx. 10/sup 37/ ergs s/sup -1/, 3 to 10 keV, assuming a distance of 1 kpc); (2) the centroid of the x-ray emission generally lags the ..gamma..-ray centroid, but there is also evidence for one or more types of x-ray precursor activity; (3) the ..gamma..-ray hardness ratios were not highly variable for these particular events. However, there is some evidence that the ..gamma..-ray spectra softened near the ends of the bursts when the x-ray/..gamma..-ray ratios were high; (4) the x-ray/..gamma..-ray power law number index during times of the strongest ..gamma..-ray emission ranged from 0.8 to approx. 1.1 for the four bursts; (5) the x-ray tail of GB790307 probably can be modeled as the cooling of hot plasma generated during the ..gamma..-ray burst. Simple versions of this model can be used to estimate various source parameters. These estimates imply a distance of a few hundred to a few thousand pc; (6) gamma-ray bursters probably do not produce events similar to classical x-ray bursts independently of the ..gamma..-ray emission.

Laros, J.G.; Evans, W.D.; Fenimore, E.E.; Klebesadel, R.W.; Shulman, S.; Fritz, G.

1983-01-01T23:59:59.000Z

78

Two Manufacturers Agree to Civil Penalties to Resolve Enforcement...  

Energy Savers (EERE)

Civil Penalty to Resolve Light Bulb Efficiency Violations DOE Collects Civil Penalties for Failure to Certify DOE Collects 80,000 Civil Penalty From Showerhead Manufacturer...

79

On the keV sterile neutrino search in electron capture  

E-Print Network (OSTI)

A joint effort of cryogenic microcalorimetry (CM) and high-precision Penning-trap mass spectrometry (PT-MS) in investigating atomic orbital electron capture (EC) can shed light on the possible existence of heavy sterile neutrinos with masses from 0.5 to 100 keV. Sterile neutrinos are expected to perturb the shape of the atomic de-excitation spectrum measured by CM after a capture of the atomic orbital electrons by a nucleus. This effect should be observable in the ratios of the capture probabilities from different orbits. The sensitivity of the ratio values to the contribution of sterile neutrinos strongly depends on how accurately the mass difference between the parent and the daughter nuclides of EC-transitions can be measured by, e.g., PT-MS. A comparison of such probability ratios in different isotopes of a certain chemical element allows one to exclude many systematic uncertainties and thus could make feasible a determination of the contribution of sterile neutrinos on a level below 1%. Several electron capture transitions suitable for such measurements are discussed.

P. E. Filianin; K. Blaum; S. A. Eliseev; L. Gastaldo; Yu. N. Novikov; V. M. Shabaev; I. I. Tupitsyn; J. Vergados

2014-02-18T23:59:59.000Z

80

Nonabelian dark matter models for 3.5 keV X-rays  

E-Print Network (OSTI)

A recent analysis of XXM-Newton data reveals the possible presence of an X-ray line at approximately 3.55 keV, which is not readily explained by known atomic transitions. Numerous models of eV-scale decaying dark matter have been proposed to explain this signal. Here we explore models of multicomponent nonabelian dark matter with typical mass ~ 1-10 GeV (higher values being allowed in some models) and eV-scale splittings that arise naturally from the breaking of the nonabelian gauge symmetry. Kinetic mixing between the photon and the hidden sector gauge bosons can occur through a dimension-5 or 6 operator. Radiative decays of the excited states proceed through transition magnetic moments that appear at one loop. The decaying excited states can either be primordial or else produced by upscattering of the lighter dark matter states. These models are significantly constrained by direct dark matter searches or cosmic microwave background distortions, and are potentially testable in fixed target experiments that s...

Cline, James M

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

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

SciTech Connect

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.

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

2010-11-04T23:59:59.000Z

82

RESOLVED MAGNETIC FIELD MAPPING OF A MOLECULAR CLOUD USING GPIPS  

SciTech Connect

We present the first resolved map of plane-of-sky magnetic field strength for a quiescent molecular cloud. GRSMC 45.60+0.30 subtends 40 Multiplication-Sign 10 pc at a distance of 1.88 kpc, masses 16,000 M{sub Sun }, and exhibits no star formation. Near-infrared background starlight polarizations were obtained for the Galactic Plane Infrared Polarization Survey using the 1.8 m Perkins telescope and the Mimir instrument. The cloud area of 0.78 deg{sup 2} contains 2684 significant starlight polarizations for Two Micron All Sky Survey matched stars brighter than 12.5 mag in the H band. Polarizations are generally aligned with the cloud's major axis, showing an average position angle dispersion of 15 {+-} 2 Degree-Sign and polarization of 1.8 {+-} 0.6%. The polarizations were combined with Galactic Ring Survey {sup 13}CO spectroscopy and the Chandrasekhar-Fermi method to estimate plane-of-sky magnetic field strengths, with an angular resolution of 100 arcsec. The average plane-of-sky magnetic field strength across the cloud is 5.40 {+-} 0.04 {mu}G. The magnetic field strength map exhibits seven enhancements or 'magnetic cores'. These cores show an average magnetic field strength of 8.3 {+-} 0.9 {mu}G, radius of 1.2 {+-} 0.2 pc, intercore spacing of 5.7 {+-} 0.9 pc, and exclusively subcritical mass-to-flux ratios, implying their magnetic fields continue to suppress star formation. The magnetic field strength shows a power-law dependence on gas volume density, with slope 0.75 {+-} 0.02 for n{sub H{sub 2}} {>=}10 cm{sup -3}. This power-law index is identical to those in studies at higher densities, but disagrees with predictions for the densities probed here.

Marchwinski, Robert C.; Pavel, Michael D.; Clemens, Dan P., E-mail: robmarch@bu.edu, E-mail: pavelmi@bu.edu, E-mail: clemens@bu.edu [Institute for Astrophysical Research, Boston University, 725 Commonwealth Ave, Boston, MA 02215 (United States)

2012-08-20T23:59:59.000Z

83

0-600 kev Gamma-Ray Spectra from Thermal Neutron Capture in the Region A=104to198  

Science Journals Connector (OSTI)

The energies and absolute intensities of prominent peaks in the 0-600 kev region of the gamma-ray spectrum following thermal neutron capture have been measured with a single NaI(Tl) scintillation spectrometer. The elements investigated were rhodium, silver, cadmium, indium, antimony, tellurium, iodine, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, hafnium, tantalum, rhenium, iridium, platinum, and gold.

James E. Draper

1959-04-01T23:59:59.000Z

84

Development of a modular CdTe detector plane for gamma-ray burst detection below 100 keV  

E-Print Network (OSTI)

We report on the development of an innovative CdTe detector plane (DPIX) optimized for the detection and localization of gamma-ray bursts in the X-ray band (below 100 keV). DPIX is part of an R&D program funded by the French Space Agency (CNES). DPIX builds upon the heritage of the ISGRI instrument, currently operating with great success on the ESA INTEGRAL mission. DPIX is an assembly of 200 elementary modules (XRDPIX) equipped with 32 CdTe Schottky detectors (4x4 mm2, 1 mm thickness) produced by ACRORAD Co. LTD. in Japan. These detectors offer good energy response up to 100 keV. Each XRDPIX is readout by the very low noise front-end electronics chip IDeF-X, currently under development at CEA/DSM/DAPNIA. In this paper, we describe the design of XRDPIX, the main features of the IDeF-X chip, and will present preliminary results of the reading out of one CdTe Schottky detector by the IDeF-X V1.0 chip. A low-energy threshold around 2.7 keV has been measured. This is to be compared with the 12-15 keV threshol...

Ehanno, M; Barret, D; Lacombe, K; Pons, R; Rouaix, G; Gevin, O; Limousin, O; Lugiez, F; Bardoux, A; Penquer, A

2007-01-01T23:59:59.000Z

85

Development of a modular CdTe detector plane for gamma-ray burst detection below 100 keV  

E-Print Network (OSTI)

We report on the development of an innovative CdTe detector plane (DPIX) optimized for the detection and localization of gamma-ray bursts in the X-ray band (below 100 keV). DPIX is part of an R&D program funded by the French Space Agency (CNES). DPIX builds upon the heritage of the ISGRI instrument, currently operating with great success on the ESA INTEGRAL mission. DPIX is an assembly of 200 elementary modules (XRDPIX) equipped with 32 CdTe Schottky detectors (4x4 mm2, 1 mm thickness) produced by ACRORAD Co. LTD. in Japan. These detectors offer good energy response up to 100 keV. Each XRDPIX is readout by the very low noise front-end electronics chip IDeF-X, currently under development at CEA/DSM/DAPNIA. In this paper, we describe the design of XRDPIX, the main features of the IDeF-X chip, and will present preliminary results of the reading out of one CdTe Schottky detector by the IDeF-X V1.0 chip. A low-energy threshold around 2.7 keV has been measured. This is to be compared with the 12-15 keV threshold of the ISGRI-INTEGRAL and BAT-SWIFT instruments, which both use similar detector material.

M. Ehanno; C. Amoros; D. Barret; K. Lacombe; R. Pons; G. Rouaix; O. Gevin; O. Limousin; F. Lugiez; A. Bardoux; A. Penquer

2007-01-15T23:59:59.000Z

86

Observational consistency and future predictions for a 3.5 keV ALP to photon line  

E-Print Network (OSTI)

Motivated by the possibility of explaining the 3.5 keV line through dark matter decaying to axion-like particles that subsequently convert to photons, we study ALP-photon conversion for sightlines passing within 50 pc of the galactic centre. Conversion depends on the galactic centre magnetic field which is highly uncertain. For fields at low or mid-range of observational estimates (10--100 $\\mu$G), no observable signal is possible. For fields at the high range of observational estimates (a pervasive poloidal mG field over the central 150 pc) it is possible to generate sufficient signal to explain recent observations of a 3.5 keV line in the galactic centre. In this scenario, the galactic centre line signal comes predominantly from the region with $z > 20$ pc, reconciling the results from the Chandra and XMM-Newton X-ray telescopes. The dark matter to ALP to photon scenario also naturally predicts the non-observation of the 3.5 keV line in stacked galaxy spectra. We further explore predictions for the line flux in galaxies and suggest a set of galaxies that is optimised for observing the 3.5 keV line in this model.

Pedro D. Alvarez; Joseph P. Conlon; Francesca V. Day; M. C. David Marsh; Markus Rummel

2014-10-07T23:59:59.000Z

87

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

E-Print Network (OSTI)

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 ALP to photon 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.

Joseph P. Conlon; Francesca V. Day

2014-04-30T23:59:59.000Z

88

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

E-Print Network (OSTI)

Production of a keV X-Ray Beam from Synchrotron Radiation in Relativistic Laser-Plasma Interaction demonstrate that a beam of x-ray radiation can be generated by simply focusing a single high- intensity laser spectral range) [6]. Laser-driven K x-ray sources [7­9] radiate subnanometer wavelength radiation

Umstadter, Donald

89

Spatially Resolving a Starburst Galaxy at Hard X-ray Energies: NuSTAR, Chandra, AND VLBA Observations of NGC 253  

E-Print Network (OSTI)

Prior to the launch of NuSTAR, it was not feasible to spatially resolve the hard (E > 10 keV) emission from galaxies beyond the Local Group. The combined NuSTAR dataset, comprised of three ~165 ks observations, allows spatial characterization of the hard X-ray emission in the galaxy NGC 253 for the first time. As a follow up to our initial study of its nuclear region, we present the first results concerning the full galaxy from simultaneous NuSTAR, Chandra, and VLBA monitoring of the local starburst galaxy NGC 253. Above ~10 keV, nearly all the emission is concentrated within 100" of the galactic center, produced almost exclusively by three nuclear sources, an off-nuclear ultraluminous X-ray source (ULX), and a pulsar candidate that we identify for the first time in these observations. We detect 21 distinct sources in energy bands up to 25 keV, mostly consisting of intermediate state black hole X-ray binaries. The global X-ray emission of the galaxy - dominated by the off-nuclear ULX and nuclear sources, whic...

Wik, Daniel R; Hornschemeier, Ann E; Yukita, Mihoko; Ptak, Andrew; Zezas, Andreas; Antoniou, Vallia; Argo, Megan K; Bechtol, Keith; Boggs, Steven; Christensen, Finn; Craig, William; Hailey, Charles; Harrison, Fiona; Krivanos, Roman; Maccarone, Thomas J; Stern, Daniel; Venters, Tonia; Zhang, William W

2014-01-01T23:59:59.000Z

90

Development of a Time-resolved Soft X-ray Spectrometer for Laser Produced Plasma Experiments  

SciTech Connect

A 2400 line/mm variable spaced grating spectrometer (VSG) has been used to measure soft x-ray emission (8-22 {angstrom}) from laser-produced plasma experiments at Lawrence Livermore National Laboratory's Compact Multipulse Terrawatt (COMET) Laser Facility. The spectrometer was coupled to a Kentech x-ray streak camera to study the temporal evolution of soft x-rays emitted from the back of mylar and copper foils irradiated at 10{sup 15} W/cm{sup 2}. The instrument demonstrated a resolving power of {approx} 120 at 19 {angstrom} with a time resolution of 31 ps. The time-resolved copper emission spectrum was consistent with a photodiode monitoring the laser temporal pulse shape and indicated that the soft x-ray emission follows the laser heating of the target. The time and spectral resolution of this diagnostic make it useful for studies of high temperature plasmas.

Cone, K V; Dunn, J; Schneider, M B; Baldis, H A; Brown, G V; Emig, J; James, D L; May, M J; Park, J; Shepherd, R; Widmann, K

2010-05-12T23:59:59.000Z

91

Development of a time-resolved soft x-ray spectrometer for laser produced plasma experiments  

SciTech Connect

A 2400 lines/mm variable-spaced grating spectrometer has been used to measure soft x-ray emission (8-22 A) from laser-produced plasma experiments at Lawrence Livermore National Laboratory's Compact Multipulse Terrawatt (COMET) Laser Facility. The spectrometer was coupled to a Kentech x-ray streak camera to study the temporal evolution of soft x rays emitted from the back of the Mylar and the copper foils irradiated at 10{sup 15} W/cm{sup 2}. The instrument demonstrated a resolving power of {approx}120 at 19 A with a time resolution of 31 ps. The time-resolved copper emission spectrum was consistent with a photodiode monitoring the laser temporal pulse shape and indicated that the soft x-ray emission follows the laser heating of the target. The time and spectral resolutions of this diagnostic make it useful for studies of high temperature plasmas.

Cone, K. V.; Park, J. [Lawrence Livermore National Laboratory, Livermore, California 94551 (United States); University of California at Davis, Davis, California 95616 (United States); Dunn, J.; Schneider, M. B.; Brown, G. V.; Emig, J.; James, D. L.; May, M. J.; Shepherd, R.; Widmann, K. [Lawrence Livermore National Laboratory, Livermore, California 94551 (United States); Baldis, H. A. [University of California at Davis, Davis, California 95616 (United States)

2010-10-15T23:59:59.000Z

92

Resolving the Spin Crisis: Mergers and Feedback  

E-Print Network (OSTI)

We model in simple terms the angular momentum (J) problem of galaxy formation in CDM, and identify the key elements of a scenario that can solve it. The buildup of J is modeled via dynamical friction and tidal stripping in mergers. This reveals how over-cooling in incoming halos leads to transfer of J from baryons to dark matter (DM), in conflict with observations. By incorporating a simple recipe of supernova feedback, we match the observed J distribution in disks. Gas removal from small incoming halos, which make the low-J component of the product, eliminates the low-J baryons. Partial heating and puffing-up of the gas in larger incoming halos, combined with tidal stripping, reduces the J loss of baryons. This implies a higher baryonic spin for lower mass halos. The observed low baryonic fraction in dwarf galaxies is used to calibrate the characteristic velocity associated with supernova feedback, yielding v_fb sim 100 km/s, within the range of theoretical expectations. The model then reproduces the observed distribution of spin parameter among dwarf and bright galaxies, as well as the J distribution inside these galaxies. This suggests that the model captures the main features of a full scenario for resolving the spin crisis.

Avishai Dekel; Ariyeh H. Maller

2002-01-19T23:59:59.000Z

93

Efficient data IO for a Parallel Global Cloud Resolving Model  

Science Journals Connector (OSTI)

Execution of a Global Cloud Resolving Model (GCRM) at target resolutions of 2-4 km will generate, at a minimum, 10s of Gigabytes of data per variable per snapshot. Writing this data to disk, without creating a serious bottleneck in the execution of the ... Keywords: Data formatting, Geodesic grid, Global Cloud Resolving Model, Grid Specifications, High performance IO, Parallel IO libraries

Bruce Palmer; Annette Koontz; Karen Schuchardt; Ross Heikes; David Randall

2011-12-01T23:59:59.000Z

94

The INTEGRAL/SPI 511 keV Signal from Hidden Valleys  

SciTech Connect

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 e{sup +}e{sup -} could be a few hundred GeV and within the reach of a 500GeV e{sup +}e{sup -} 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.

Davoudiasl, H.; Perez, G.

2009-12-01T23:59:59.000Z

95

Civil Penalty Actions For Certification Violations Resolved | Department of  

NLE Websites -- All DOE Office Websites (Extended Search)

Civil Penalty Actions For Certification Violations Resolved Civil Penalty Actions For Certification Violations Resolved Civil Penalty Actions For Certification Violations Resolved May 6, 2010 - 12:39pm Addthis Today, the Department of Energy announced that it had resolved civil penalty actions against four showerhead manufacturers for having violated the Department's water conservation certification regulations. To resolve these actions Zoe Industries, Altmans Products LLC, EZ-FLO International, and Watermark Designs Ltd. have now certified that their showerheads meet federal water conservation standards and collectively will pay civil penalties of $165,104. DOE had initiated cases against the four manufacturers on January 25th, alleging that they had failed to submit required documents to DOE demonstrating compliance with federal

96

Civil Penalty Actions For Certification Violations Resolved | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Civil Penalty Actions For Certification Violations Resolved Civil Penalty Actions For Certification Violations Resolved Civil Penalty Actions For Certification Violations Resolved May 6, 2010 - 12:39pm Addthis Today, the Department of Energy announced that it had resolved civil penalty actions against four showerhead manufacturers for having violated the Department's water conservation certification regulations. To resolve these actions Zoe Industries, Altmans Products LLC, EZ-FLO International, and Watermark Designs Ltd. have now certified that their showerheads meet federal water conservation standards and collectively will pay civil penalties of $165,104. DOE had initiated cases against the four manufacturers on January 25th, alleging that they had failed to submit required documents to DOE demonstrating compliance with federal

97

Time resolved studies on X-rays and charged particles emission from a low energy plasma focus device  

Science Journals Connector (OSTI)

The time resolved studies on soft X-ray, hard X-ray, electron beam and ion beam emissions from a low energy plasma focus device are carried out simultaneously by employing a photodiode X-ray spectrometer, a scintillator photomultiplier tube, a combination of Faraday cup and Rogowski coil assembly and a biased Faraday cup, respectively. The soft X-ray is seen to be emitted in short multiple pulses corresponding to different pinch stages where as it is a single for hard X-ray, which corresponds to only maximum pinch stage. Similarly, multiple pulses of electron beam is found, which also corresponds to different pinch stages and these pulses are analogous with the soft X-ray pulses. The effective hard X-ray photon energy is estimated by foil absorption technique and found to be around 110 keV, which is consistent with the observed electron beam energy distribution. The simultaneous investigation of the electron and ion beam shows that both are accelerated by the same local field generated during the pinching process. The detailed results of time resolved studies on various radiations are incorporated in this Letter.

N.K. Neog; S.R. Mohanty; T.K. Borthakur

2008-01-01T23:59:59.000Z

98

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

E-Print Network (OSTI)

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.

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

2006-02-09T23:59:59.000Z

99

RESOLVING THE RADIO SOURCE BACKGROUND: DEEPER UNDERSTANDING THROUGH CONFUSION  

SciTech Connect

We used the Karl G. Jansky Very Large Array to image one primary beam area at 3 GHz with 8'' FWHM resolution and 1.0 {mu}Jy beam{sup -1} rms noise near the pointing center. The P(D) distribution from the central 10 arcmin of this confusion-limited image constrains the count of discrete sources in the 1 < S({mu}Jy) < 10 range. At this level, the brightness-weighted differential count S {sup 2} n(S) is converging rapidly, as predicted by evolutionary models in which the faintest radio sources are star-forming galaxies; and Almost-Equal-To 96% of the background originating in galaxies has been resolved into discrete sources. About 63% of the radio background is produced by active galactic nuclei (AGNs), and the remaining 37% comes from star-forming galaxies that obey the far-infrared (FIR)/radio correlation and account for most of the FIR background at {lambda} Almost-Equal-To 160 {mu}m. Our new data confirm that radio sources powered by AGNs and star formation evolve at about the same rate, a result consistent with AGN feedback and the rough correlation of black hole and stellar masses. The confusion at centimeter wavelengths is low enough that neither the planned Square Kilometre Array nor its pathfinder ASKAP EMU survey should be confusion limited, and the ultimate source detection limit imposed by 'natural' confusion is {<=}0.01 {mu}Jy at {nu} = 1.4 GHz. If discrete sources dominate the bright extragalactic background reported by ARCADE 2 at 3.3 GHz, they cannot be located in or near galaxies and most are {<=}0.03 {mu}Jy at 1.4 GHz.

Condon, J. J.; Cotton, W. D.; Fomalont, E. B.; Kellermann, K. I. [National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903 (United States); Miller, N. [Department of Astronomy, University of Maryland, College Park, MD 20742-2421 (United States); Perley, R. A. [National Radio Astronomy Observatory, P.O. Box 0, Socorro, NM 87801 (United States); Scott, D.; Vernstrom, T.; Wall, J. V. [Department of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1C1 (Canada)

2012-10-10T23:59:59.000Z

100

Charge-Exchange Collisions Between Hydrogen Ions and Cesium Vapor in the Energy Range 0.5-20 keV  

Science Journals Connector (OSTI)

Charge-exchange collisions have been studied when H+ ions and ground state H0 atoms are incident on Cs vapor. Measurements of the positive, neutral, and negative beam components after passage through the target were made as a function of the Cs target thickness at several energies between 0.5 and 20 keV. All three beam components were found to approach charge equilibrium monotonically. The maximum H- equilibrium yield is (21 4)%, which occurs at an H+ energy of 0.75 keV. The H- yield decreases with increasing energy, and is 0.4% at 20 keV. At energies below 4 keV the H+ equilibrium yield is very small compared with the yield of H0 and H-. For energies greater than 10 kev the H- equilibrium yield is very small compared with the yield of H0 and H+. The cross sections ?+0, ?+-, ?0+, and ?0- were measured. The subscripts + and - refer to the H+ and H- ions, 0 as an initial subscript refers to a ground-state H0 atom, and 0 as a final subscript refers to an H0 atom in the particular states produced. The cross section ?+0 decreases with increasing energy, and ranges from (9.4 2.0) 10-15 cm2 at 1 keV to (7.5 1.1) 10-16 cm2 at 15 keV. The cross section ?+- decreases with increasing energy in the range 2-15 keV, and has the value (2.1 0.6) 10-17 cm2 at 5 keV. The cross section ?0+ increases with increasing energy, having the value (1.2 0.2) 10-17 cm2 at 2 keV, and (1.74 0.26) 10-16 cm2 at 15 keV. The cross section ?0- decreases with increasing energy, having the value (1.5 0.3) 10-16 cm2 at 2 keV and (1.4 0.2) 10-17 cm2 at 15 keV.

A. S. Schlachter; P. J. Bjorkholm; D. H. Loyd; L. W. Anderson; W. Haeberli

1969-01-05T23:59:59.000Z

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

DOE Resolves Nearly All of its September 2010 Certification Enforcement  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Resolves Nearly All of its September 2010 Certification Resolves Nearly All of its September 2010 Certification Enforcement Actions DOE Resolves Nearly All of its September 2010 Certification Enforcement Actions October 19, 2010 - 10:39am Addthis The Energy Department's new Office of Enforcement, part of the General Counsel's Office, announced today that it has now successfully resolved 26 of the 30 certification enforcement cases brought in September 2010 as part of the Department's ongoing enforcement initiative. The Department will continue aggressively enforcing its certification requirements, which generate information that allows the Department to verify if a company is complying with energy and water efficiency standards that deliver significant energy, water, and cost savings to the American public.

102

DOE Resolves Nearly All of its September 2010 Certification Enforcement  

NLE Websites -- All DOE Office Websites (Extended Search)

Resolves Nearly All of its September 2010 Certification Resolves Nearly All of its September 2010 Certification Enforcement Actions DOE Resolves Nearly All of its September 2010 Certification Enforcement Actions October 19, 2010 - 10:39am Addthis The Energy Department's new Office of Enforcement, part of the General Counsel's Office, announced today that it has now successfully resolved 26 of the 30 certification enforcement cases brought in September 2010 as part of the Department's ongoing enforcement initiative. The Department will continue aggressively enforcing its certification requirements, which generate information that allows the Department to verify if a company is complying with energy and water efficiency standards that deliver significant energy, water, and cost savings to the American public.

103

DOE Office of Enforcement Resolves 20 Energy Efficiency Enforcement Cases |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Resolves 20 Energy Efficiency Enforcement Resolves 20 Energy Efficiency Enforcement Cases DOE Office of Enforcement Resolves 20 Energy Efficiency Enforcement Cases June 3, 2011 - 5:04pm Addthis The Department of Energy's Office of Enforcement today announced that it has resolved the 20 enforcement cases it brought in April 2011 against companies for failing to certify that their products comply with the Department's energy and water use standards. The certification requirement generates important information that allows the Department to verify compliance with its efficiency standards and ensures that consumers have the information they need to buy energy- and cost-saving products. In 17 of the cases, the companies entered agreements that include a commitment to certify all covered products. As part of the agreements,

104

DOE Successfully Resolves Three Enforcement Cases and Files Yet Another |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Successfully Resolves Three Enforcement Cases and Files Yet Successfully Resolves Three Enforcement Cases and Files Yet Another DOE Successfully Resolves Three Enforcement Cases and Files Yet Another September 29, 2010 - 5:24pm Addthis The Department has resolved three more of the 27 certification enforcement cases initiated three weeks ago and issued one additional penalty notice to Nordyne, LLC for failure to certify certain air conditioner and heat pump products. These actions reflect the Department's continued aggressive efforts to enforce the Department's certification requirement - which helps to ensure that appliance, plumbing, and lighting products meet the energy and water efficiency levels required by law. The three companies - Daewoo International Inc., Amerisink Inc., and Stiebel Eltron, Inc.- have each agreed to pay $5,000 in penalties and to

105

DOE Resolves Avanti Refrigerator and Freezer Civil Penalty Case  

Energy.gov (U.S. Department of Energy (DOE))

Today, the Department of Energy announced that it has resolved thecivil penalty action against Mackle Company for its failure to certify that refrigerators and refrigerator-freezers sold under the...

106

Depth-resolved cathodoluminescence spectroscopy of silicon supersaturated with sulfur  

E-Print Network (OSTI)

We investigate the luminescence of Si supersaturated with S (Si:S) using depth-resolved cathodoluminescence spectroscopy and secondary ion mass spectroscopy as the S concentration is varied over 2 orders of magnitude ...

Fabbri, Filippo

107

Generic Sorting in RESOLVE Yu-Shan Sun  

E-Print Network (OSTI)

1 Generic Sorting in RESOLVE Yu-Shan Sun Dept. of Mathematics and Computer Science Denison University Granville OH, 43023, USA Email: sun s@denison.edu Joan Krone Dept. of Mathematics and Computer

108

Application of Automation and Thermal Analysis to Resolving Agent Selection  

Science Journals Connector (OSTI)

The use of differential scanning calorimetry as a means to identify diastereoisomeric salts with a clear eutectic composition that is needed for effective resolution is described and forms the basis of a resolving agent screening process. Automated salt ...

Ulrich C. Dyer; David A. Henderson; Mark B. Mitchell

1999-03-19T23:59:59.000Z

109

High power  

Science Journals Connector (OSTI)

... 1970s technomanic projects such as nuclear power stations were still in vogue. Environmentalists argued that solar power seemed a far safer, cheaper and reassuringly low-tech power source. The technomaniacs ... tech power source. The technomaniacs, fearing that they were losingthis argument, sought to hijack solar power themselves. They proposed an enormously expensive and complicated ...

David Jones

1994-03-03T23:59:59.000Z

110

A time-resolved x-ray scattering experiment for the study of phase transitions and crystallization processes in metallic alloys  

SciTech Connect

An experimental setup to perform high-resolution time-resolved X-ray scattering has been commissioned on the side station of beamline 8-ID at the Advanced Photon Source. A Peltier-cooled diode detector array covering an angle range of 20 degrees is mounted on a 4-circle goniometer and is used to temporally resolve X-ray scattering patterns with a resolution up to 10 ms. Metallic ribbon samples can be quickly heated and cooled from temperatures up to 500 C inside a furnace with controllable atmosphere and equipped with a beryllium window. A description of the setup is presented along with actual results showing time-resolved phase transitions and crystallization processes in AlYNi metallic alloys. These results demonstrate the power of this technique to investigate complex crystallization processes as well as the versatility of this time-resolved X-ray scattering spectrometer.

Pelletier, J. F.; Sutton, M.; Altounian, Z.; Saini, S.; Luriom L. B.; Sandy, A. R.; Lumma, D.; Borthwick, M. A.; Falus, P.; Mochrie, S. G. J.; Stephenson, G. B.

1999-10-29T23:59:59.000Z

111

Angularly resolved Auger rates of LiF and HF  

Science Journals Connector (OSTI)

Angularly resolved Auger rates are investigated. The angular distributions of Auger electrons display a strong dependence on the final dicationic state which is created by the Auger process. The angular distributions show interference structures which can be related to the geometry of the molecule. Although there are presently no experimental data on angularly resolved Auger rates, we suppose that the angular distributions are measurable, e.g., by coincidence techniques.

K. Zhringer; H.-D. Meyer; L. S. Cederbaum

1992-11-01T23:59:59.000Z

112

Femtosecond time-resolved spectroscopy of coherent oscillations in nanomaterials  

E-Print Network (OSTI)

FEMTOSECOND TIME-RESOLVED SPECTROSCOPY OF COHERENT OSCILLATIONS IN NANOMATERIALS A Dissertation by SERGUEI JEREBTSOV Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of DOCTOR OF PHILOSOPHY May 2007 Major Subject: Physics FEMTOSECOND TIME-RESOLVED SPECTROSCOPY OF COHERENT OSCILLATIONS IN NANOMATERIALS A Dissertation by SERGUEI JEREBTSOV Submitted to the Office of Graduate Studies of Texas A&M University in partial...

Jerebtsov, Serguei Nikolaevich

2009-05-15T23:59:59.000Z

113

TEMPERED OPERATORS AND THE HEAT KERNEL AND COMPLEX POWERS OF ELLIPTIC PSEUDODIFFERENTIAL OPERATORS  

E-Print Network (OSTI)

TEMPERED OPERATORS AND THE HEAT KERNEL AND COMPLEX POWERS OF ELLIPTIC PSEUDODIFFERENTIAL OPERATORS operator and complex powers of b-pseudodi#27;erential operators, as the heat operator and complex powers are the Laplace and Mellin transforms, respectively, of the resolvent. The heat operator and complex powers

Loya, Paul

114

Power Marketing  

NLE Websites -- All DOE Office Websites (Extended Search)

UGPS' Marketing Service Area Power Marketing As a marketer of Federal power in the Upper Great Plains Region, the Power Marketing staff provides a variety of services for customers...

115

E-Print Network 3.0 - angle resolved thermal Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

consequences of a thermal pulse... . Schematic drawing of the time-resolved ellipsometer. Pump pulses thermally excite a thin Au film deposited... 1 Time-resolved ellipsometry for...

116

E-Print Network 3.0 - angle-resolved ultraviolet photoelectron...  

NLE Websites -- All DOE Office Websites (Extended Search)

Ph.D. March, 1994. Thesis: "Angle-Resolved Photoemission Study of Several Transition Metal... .D. 2003. Thesis: "Angle-Resolved Photoemission Study of the Elelctronic Structure...

117

Curium-245 and curium-247 neutron cross sections between 10 keV and 10 MeV  

SciTech Connect

The optical model code 2PLUS and the statistical model codes COMNUC and CASCADE were used to compute neutron cross sections for Cm-245 and Cm-247 between 10 keV and 10 MeV. Cross sections for elastic and inelastic scattering, radiative capture, fission, and the (n,2n) reactions were computed. The parameters for the fission model were selected to yield agreement with the cross sections from the Physics-8 bomb shot. Pu-239 cross sections were calculated and compared with existing cross section evaluations to demonstrate the validity of the calculational methods.

Clifford, L.R.; McCrosson, F.J.

1982-07-01T23:59:59.000Z

118

Photon production from collisions of 100350-keV positive ions with CO, CF4, and CH4  

Science Journals Connector (OSTI)

Various photon emissions from collisions of H+, H2+, and He+ in the 100350-keV energy range with targets of CO, CF4, and CH4 were studied. The wavelength range of the investigation ran from 2000 to 7000 . Photon-emission cross sections were measured for all significant features. The cross-section data were compared to the Bethe-Born theory through the use of Fano plots. The results show that the theory could be applicable in the case of the CO target, but is probably not applicable to the tetrahedral molecular targets as the emissions are from dissociated atoms.

Eric J. Freeman; Elisabeth L. Bryan; Michael N. Monce

1992-07-01T23:59:59.000Z

119

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

SciTech Connect

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.

Kruschwitz, Craig [NSTec; Wu, M. [SNL; Rochau, G. A. [SNL

2013-06-13T23:59:59.000Z

120

Chain-oxygen ordering in twin-free YBa2Cu3O7-single crystals driven by 20-keV electron irradiation  

E-Print Network (OSTI)

Chain-oxygen ordering in twin-free YBa2Cu3O7- single crystals driven by 20-keV electron irradiation 2005 We have examined the effects of 20-keV electron irradiation on the -Cu 1 -O 1 - n chain-oxygen arrange- ments in oxygen-deficient but otherwise twin-free YBa2Cu3O7- single crystals. Comparison

Johansen, Tom Henning

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Low-energy x-ray dosimetry studies (7 to 17.5 keV) with synchroton radiation  

SciTech Connect

Unique properties of synchrotron radiation (SR), such as its high intensity, brightness, polarization, and broad spectral distribution (extending from x-ray to infra-red wavelengths) make it an attractive light source for numerous experiments. As SR facilities are rapidly being built all over the world, they introduce the need for low-energy x-ray dosemeters because of the potential radiation exposure to experimenters. However, they also provide a unique opportunity for low-energy x-ray dosimetry studies because of the availability of monochromatic x-ray beams. Results of such studies performed at the Stanford Synchrotron Radiation Laboratory are described. Lithium fluoride TLDs (TLD-100) of varying thicknesses (0.015 to 0.08 cm) were exposed free in air to monochromatic x-rays (7 to 17.5 keV). These exposures were monitored with ionization chambers. The response (nC/Gy) was found to increase with increasing TLD thickness and with increasing beam energy. A steeper increase in response with increasing energy was observed with the thicker TLDs. The responses at 7 and 17.5 keV were within a factor of 2.3 and 5.2 for the 0.015 and 0.08 cm-thick TLDs, respectively. The effects of narrow (beam size smaller than the dosemeter) and broad (beam size larger than the dosemeter) beams on the response of the TLDs are also reported.

Ipe, N.E.; Bellamy, H.; Flood, J.R. [and others

1995-06-01T23:59:59.000Z

122

Measurement of the ionization yield of nuclear recoils in liquid argon at 80 and 233 keV  

E-Print Network (OSTI)

The energy calibration of nuclear recoil detectors is of primary importance to rare-event experiments such as those of direct dark matter search and coherent neutrino-nucleus scattering. In particular, such a calibration is performed by measuring the ionization yield of nuclear recoils in liquid Ar and Xe detection media, using neutron elastic scattering off nuclei. In the present work, the ionization yield for nuclear recoils in liquid Ar has for the first time been measured in the higher energy range, at 80 and 233 keV, using a two-phase Cryogenic Avalanche Detector (CRAD) and DD neutron generator. The ionization yield in liquid Ar at an electric field of 2.3 kV/cm amounted to 7.8+/-1.1 and 9.7+/-1.3 e-/keV at 80 and 233 keV respectively. The Jaffe model for nuclear recoil-induced ionization, in contrast to that Thomas-Imel, can probably consistently describe the energy dependence of the ionization yield.

A. Bondar; A. Buzulutskov; A. Dolgov; E. Grishnyaev; S. Polosatkin; L. Shekhtman; E. Shemyakina; A. Sokolov

2014-09-23T23:59:59.000Z

123

Revisiting the relationship between 6 {\\mu}m and 2-10 keV continuum luminosities of AGN  

E-Print Network (OSTI)

We have determined the relation between the AGN luminosities at rest-frame 6 {\\mu}m associated to the dusty torus emission and at 2-10 keV energies using a complete, X-ray flux limited sample of 232 AGN drawn from the Bright Ultra-hard XMM-Newton Survey. The objects have X-ray luminosities corrected for intrinsic absorption between 10^42 and 10^46 erg/s and redshifts from 0.05 to 2.8. The rest-frame 6 {\\mu}m luminosities were computed using data from the Wide-Field Infrared Survey Explorer and are based on a spectral energy distribution decomposition into AGN and galaxy emission. The best-fit relationship for the full sample is consistent with being linear, L_6 {\\mu}m $\\propto$ L_2-10 keV^0.99$\\pm$0.032, but has significant intrinsic scatter, ~0.35 dex in log L_6 {\\mu}m. Assuming a constant X-ray bolometric correction, the fraction of AGN bolometric luminosity reprocessed in the mid-IR decreases weakly, if at all, with the AGN luminosity, a finding at odds with simple receding torus models. Type 2 AGN have re...

Mateos, S; Alonso-Herrero, A; Rovilos, E; Hernn-Caballero, A; Barcons, X; Blain, A; Caccianiga, A; Della Ceca, R; Severgnini, P

2015-01-01T23:59:59.000Z

124

Resolve to Save Energy This Year | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Resolve to Save Energy This Year Resolve to Save Energy This Year Resolve to Save Energy This Year January 2, 2014 - 8:50am Addthis Looking for ways to save energy? Check out these tips that every homeowner should try. | Infographic by Sarah Gerrity, Energy Department. Updated January 2, 2014. Looking for ways to save energy? Check out these tips that every homeowner should try. | Infographic by Sarah Gerrity, Energy Department. Updated January 2, 2014. Rebecca Matulka Rebecca Matulka Digital Communications Specialist, Office of Public Affairs Looking for more ways to save energy? Check out Energy Saver for tips that save energy and money. Editor's Note: It's a new year, and that means new resolutions. Whether this is the first year you're looking for ways to save energy or you want to lower your energy bills even more than last year, check out our eight

125

Princeton Professor Resolves Complex Puzzle | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Princeton Professor Resolves Complex Puzzle Princeton Professor Resolves Complex Puzzle Princeton Professor Resolves Complex Puzzle November 24, 2010 - 11:32am Addthis Andy Oare Andy Oare Former New Media Strategist, Office of Public Affairs What does this mean for me? Dr. Torquato's work -- in addition to detecting gravitational waves and improving understanding of low-temperature states of matter -- could have applications in areas ranging from wireless communications network layouts to data compression and coding and cryptography. A change in perspective can change everything. A complex jigsaw puzzle may suddenly be solved by stepping back ... Taking the dog for a walk ... Or going to the gym. Physicists and mathematicians often work in similar fashion: taking a step back, looking at a complex problem in a new way, and

126

Resolve to Save Energy This Year | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Resolve to Save Energy This Year Resolve to Save Energy This Year Resolve to Save Energy This Year January 2, 2013 - 10:52am Addthis Looking for ways to save energy? Check out these tips that every homeowner should try. | Infographic by Sarah Gerrity, Energy Department. Looking for ways to save energy? Check out these tips that every homeowner should try. | Infographic by Sarah Gerrity, Energy Department. Rebecca Matulka Rebecca Matulka Digital Communications Specialist, Office of Public Affairs Looking for more ways to save energy? Check out Energy Saver for tips that save energy and money. At the beginning of every new year, millions of Americans make New Year's resolutions, which inevitably are forgotten by the end of January. This year, forget making a New Year's resolution. Instead make a home energy

127

Physics design of a 100 keV acceleration grid system for the diagnostic neutral beam for international tokamak experimental reactor  

SciTech Connect

This paper describes the physics design of a 100 keV, 60 A H{sup -} accelerator for the diagnostic neutral beam (DNB) for international tokamak experimental reactor (ITER). The accelerator is a three grid system comprising of 1280 apertures, grouped in 16 groups with 80 apertures per beam group. Several computer codes have been used to optimize the design which follows the same philosophy as the ITER Design Description Document (DDD) 5.3 and the 1 MeV heating and current drive beam line [R. Hemsworth, H. Decamps, J. Graceffa, B. Schunke, M. Tanaka, M. Dremel, A. Tanga, H. P. L. De Esch, F. Geli, J. Milnes, T. Inoue, D. Marcuzzi, P. Sonato, and P. Zaccaria, Nucl. Fusion 49, 045006 (2009)]. The aperture shapes, intergrid distances, and the extractor voltage have been optimized to minimize the beamlet divergence. To suppress the acceleration of coextracted electrons, permanent magnets have been incorporated in the extraction grid, downstream of the cooling water channels. The electron power loads on the extractor and the grounded grids have been calculated assuming 1 coextracted electron per ion. The beamlet divergence is calculated to be 4 mrad. At present the design for the filter field of the RF based ion sources for ITER is not fixed, therefore a few configurations of the same have been considered. Their effect on the transmission of the electrons and beams through the accelerator has been studied. The OPERA-3D code has been used to estimate the aperture offset steering constant of the grounded grid and the extraction grid, the space charge interaction between the beamlets and the kerb design required to compensate for this interaction. All beamlets in the DNB must be focused to a single point in the duct, 20.665 m from the grounded grid, and the required geometrical aimings and aperture offsets have been calculated.

Singh, M. J. [ITER-India, Institute for Plasma Research, Bhat, Gandhinagar, Gujarat 382428 (India); De Esch, H. P. L. [CEA-Cadarache, IRFM, F-13108 Saint-Paul-lez-Durance (France)

2010-01-15T23:59:59.000Z

128

Wind Power  

NLE Websites -- All DOE Office Websites (Extended Search)

Wind Power As the accompanying map of New Mexico shows, the best wind power generation potential near WIPP is along the Delaware Mountain ridge line of the southern Guadalupe...

129

Time-Resolved Study of Bonding in Liquid Carbon  

NLE Websites -- All DOE Office Websites (Extended Search)

Time-Resolved Study of Bonding Time-Resolved Study of Bonding in Liquid Carbon Time-Resolved Study of Bonding in Liquid Carbon Print Wednesday, 28 September 2005 00:00 We are accustomed to observing carbon in its elemental form as a solid, ranging from the soft "lead" in pencils to the precious gemstone in diamond rings. While considerable attention has been focused on solid forms of carbon, the properties of liquid carbon are much more difficult to measure accurately. The very strong bonding between carbon atoms that gives diamonds their hardness also makes carbon very difficult to melt, requiring temperatures above 5000 K at pressures above 100 bar. Maintaining such conditions in a laboratory is a challenge that has hampered efforts to fully understand the chemical bonding properties of this biologically, industrially, and environmentally important element. At the ALS, researchers have found a way to rapidly heat a carbon sample and contain the resulting liquid long enough to perform picosecond time-resolved x-ray absorption spectroscopy. The technique provides a way to measure the bonding properties of liquid carbon at near-solid densities that can then be compared with results from molecular dynamics simulations.

130

Resolving Water Conflicts -Impediments and Solutions Symposium Location: Binghamton University  

E-Print Network (OSTI)

and discuss possible approaches to resolving these conflicts. Agenda: Wednesday P.M. Keynote Presentations Zhu, Burrell Montz and Joe Graney) 1:30 ­ 2:15 Jeff Lape Executive Director EPA Chesapeake Bay Program Conflicts and Solutions - Chesapeake Bay Program Perspectives 2:15 ­ 2:30 Break (Refreshments in Back

Suzuki, Masatsugu

131

Spatially Resolved Ballistic Optoelectronic Transport Measured by Quantized  

E-Print Network (OSTI)

Spatially Resolved Ballistic Optoelectronic Transport Measured by Quantized Photocurrent of the electron modes in the QPC. KEYWORDS Ballistic optoelectronic quantum transport, nanoscale electronics Q to hundreds of nanometers have been detected. We find that a ballistic optoelectronic trans- port can occur

Ludwig-Maximilians-Universität, München

132

COMMUNICATIONS Polarization-resolved linewidth-power product of a vertical-cavity  

E-Print Network (OSTI)

when the lasing mode passes through threshold, and ii that the polarization fluctuations in a VCSEL Institute of Physics. DOI: 10.1063/1.1352673 The vertical-cavity semiconductor laser VCSEL is not a true c is the cavity loss rate, i.e., the sum of the mirror loss rate m and the internal loss rate i , h

Exter, Martin van

133

Spatially resolved determination of the short-circuit current density of silicon solar cells via lock-in thermography  

SciTech Connect

We present a spatially resolved method to determine the short-circuit current density of crystalline silicon solar cells by means of lock-in thermography. The method utilizes the property of crystalline silicon solar cells that the short-circuit current does not differ significantly from the illuminated current under moderate reverse bias. Since lock-in thermography images locally dissipated power density, this information is exploited to extract values of spatially resolved current density under short-circuit conditions. In order to obtain an accurate result, one or two illuminated lock-in thermography images and one dark lock-in thermography image need to be recorded. The method can be simplified in a way that only one image is required to generate a meaningful short-circuit current density map. The proposed method is theoretically motivated, and experimentally validated for monochromatic illumination in comparison to the reference method of light-beam induced current.

Fertig, Fabian, E-mail: fabian.fertig@ise.fraunhofer.de; Greulich, Johannes; Rein, Stefan [Fraunhofer Institute for Solar Energy Systems ISE, Heidenhofstr. 2, D-79110 Freiburg (Germany)

2014-05-19T23:59:59.000Z

134

Differential cross sections for single ionization of H{sub 2} by 75-keV proton impact  

SciTech Connect

We have calculated triply differential cross sections (TDCS) and doubly differential cross sections (DDCS) for single ionization of H{sub 2} by 75-keV proton impact using the molecular three-body distorted-wave-eikonal initial-state (M3DW-EIS) approach. Previously published measured DDCS (differential in the projectile scattering angle and integrated over the ejected electron angles) found pronounced structures at relatively large angles that were interpreted as an interference resulting from the two-centered potential of the molecule. Theory treating H{sub 2} as atomic H multiplied by a molecular interference factor only predicts the observed structure when assumptions are made about the molecular orientation. Here we apply the M3DW-EIS method, which does not rely on such an ad hoc approach, but rather treats the interference from first principles.

Chowdhury, U.; Schulz, M.; Madison, D. H. [Missouri University of Science and Technology, Department of Physics and Laboratory for Atomic, Molecular, and Optical Research, Rolla, Missouri 65401 (United States)

2011-03-15T23:59:59.000Z

135

Effect of Degree of Orientation and Crystal Size on the Scattering of 20-kev Electrons by Aluminum  

Science Journals Connector (OSTI)

The energy distribution of 20-kev electrons scattered by aluminum has been measured as a function of degree of crystalline orientation and foil thickness. For equal physical thickness the foils with higher degree of orientation are electron-optically thinner. Over a range of thickness from 35 to 500 A, the values of the first two characteristic losses are 6.30.1 ev and 15.00.1 ev. They exhibit no systematic change with thickness greater than the experimental uncertainty. The intensity ratio between the two losses is essentially constant within this range. It is concluded that the low-lying (6.3 ev) loss is not due to the depolarization effect of grain boundaries.

L. Marton; J. Arol Simpson; J. A. Suddeth; M. D. Wagner; Hiroshi Watanabe

1958-06-01T23:59:59.000Z

136

Characteristic x-ray production by argon projectiles moving in graphite targets between 30 and 200 keV  

Science Journals Connector (OSTI)

Thick-target yields and x-ray spectra have been measured for argon ions impinging on graphite targets at energies between 30 and 200 keV. The thick-target yields of carbon K-shell and argon L-shell x rays are analyzed on the basis of a simple model involving multiple collisions and molecular-orbital promotions. The analysis results in average argon L-shell fluorescence yields and total decay rates for argon ions traversing the solid. These values are found to be substantially lower than those appropriate to argon ions traversing a gas target. An explanation for the differences is proposed, and found to be corroborated by analysis of the observed x-ray spectra. An approximate determination of the argon M-shell vacancy distribution is obtained and compared with beam-foil charge equilibrium measurements.

R. J. Fortner and J. D. Garcia

1975-09-01T23:59:59.000Z

137

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

E-Print Network (OSTI)

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.

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

2009-10-01T23:59:59.000Z

138

X-ray Filament with a Strong 6.7 keV Line in the Galactic Center Region  

E-Print Network (OSTI)

An elongated X-ray source with a strong K-shell line from He-like iron (Fe XXVI) is found at (RA, Dec)_{J2000.0}=(17h44m00s.0, -29D13'40''.9) in the Galactic center region. The position coincides with the X-ray thread, G359.55+0.16, which is aligned with the radio non-thermal filament. The X-ray spectrum is well fitted with an absorbed thin thermal plasma (apec) model. The best-fit temperature, metal abundance, and column density are 4.1^{+2.7}_{-1.8} keV, 0.58^{+0.41}_{-0.32} solar, and 6.1^{+2.5}_{-1.3}x10^{22} cm^{-2}, respectively. These values are similar to those of the largely extended Galactic center X-ray emission.

Yamauchi, Shigeo; Nakashima, Shinya; Nobukawa, Masayoshi; Tsuru, Takeshi Go; Koyama, Katsuji

2014-01-01T23:59:59.000Z

139

Absolute Calibration of Image Plate for electrons at energy between 100 keV and 4 MeV  

SciTech Connect

The authors measured the absolute response of image plate (Fuji BAS SR2040) for electrons at energies between 100 keV to 4 MeV using an electron spectrometer. The electron source was produced from a short pulse laser irradiated on the solid density targets. This paper presents the calibration results of image plate Photon Stimulated Luminescence PSL per electrons at this energy range. The Monte Carlo radiation transport code MCNPX results are also presented for three representative incident angles onto the image plates and corresponding electron energies depositions at these angles. These provide a complete set of tools that allows extraction of the absolute calibration to other spectrometer setting at this electron energy range.

Chen, H; Back, N L; Eder, D C; Ping, Y; Song, P M; Throop, A

2007-12-10T23:59:59.000Z

140

$?_R$ dark matter-philic Higgs for 3.5 keV X-ray signal  

E-Print Network (OSTI)

We suggest a new model in which a dark matter-philic Higgs is included to discriminate the interaction between dark matter and other particles, to explain the recent observation of the $7~ {\\rm keV}$ X-ray line signal by XMM-Newton observatory. The smallness of the vacuum expectation value of dark matter-philic Higgs can achieve the small mixing angle of the dark matter right-handed neutrino with the ordinary one. We show the range of the symmetry breaking scales as well as the observed dark matter properties are satisfied. In our model, the value of the vacuum expectation value of dark matter-philic Higgs should be about $0.17~ {\\rm GeV}$.

Naoyuki Haba; Hiroyuki Ishida; Ryo Takahashi

2014-08-05T23:59:59.000Z

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Accretion Properties of a Sample of Hard X-Ray (<60 keV) Selected Seyfert 1 Galaxies  

Science Journals Connector (OSTI)

We examine the accretion properties in a sample of 42 hard (3-60 keV) X-ray selected nearby broad-line active galactic nuclei (AGNs). The energy range in the sample is harder than that usually used in similar previous studies. These AGNs are mainly complied from the RXTE All Sky Survey, and complemented by the released INTEGRAL AGN catalog. The black hole masses, bolometric luminosities of AGN, and Eddington ratios are derived from their optical spectra in terms of the broad H? emission line. The tight correlation between the hard X-ray (3-20 keV) and bolometric/line luminosity is well identified in our sample. Also identified is a strong inverse Baldwin relationship of the H? emission line. In addition, all of these hard X-ray AGNs are biased toward luminous objects with a high Eddington ratio (mostly between 0.01 and 0.1) and a low column density (22 cm2), which is most likely due to the selection effect of the surveys. The hard X-ray luminosity is consequently found to be strongly correlated with the black hole mass. We believe the sample completeness will be improved in the next few years by the ongoing Swift and the International Gamma-Ray Astrophysics Laboratory missions, and by the next advanced missions, such as NuSTAR, Simbol-X, and NeXT. Finally, the correlation between RFe (= optical Fe II/H?) and disk temperature as assessed by T ? (L/L Edd)M 1 BH leads us to suggest that the strength of the Fe II emission is mainly determined by the shape of the ionizing spectrum.

J. Wang; Y. F. Mao; J. Y. Wei

2009-01-01T23:59:59.000Z

142

Nuclear Powers Benefits  

Science Journals Connector (OSTI)

Nuclear Powers Benefits ... Using nuclear power in place of fossil-fuel energy sources, such as coal, has prevented some 1.8 million air-pollution-related deaths and 64 gigatons of carbon emissions globally over the past four decades, a study concludes. ... These estimates suggest policymakers should continue to rely on and expand nuclear power in place of fossil fuels to mitigate climate change, the authors say (Environ. ...

MARK SCHROPE

2013-04-08T23:59:59.000Z

143

UNIVERSITY OF CALIFORNIA, Velocity-space resolved fast-ion measurements in the DIII-D tokamak  

E-Print Network (OSTI)

=2830ms with central ion temperature Ti=5keV and NBI injection energy Einj=80keV. Linear color scale function for the vertically-viewing FIDA system calculated for E =45keV. The minimum energy curve combination of gyro-angle, energy, and pitch to contribute to the measured spectrum at E . Figure 1.6. FIDA

Heidbrink, William W.

144

An avalanche-photodiode-based photon-number-resolving detector  

E-Print Network (OSTI)

Avalanche photodiodes are widely used as practical detectors of single photons.1 Although conventional devices respond to one or more photons, they cannot resolve the number in the incident pulse or short time interval. However, such photon number resolving detectors are urgently needed for applications in quantum computing,2-4 communications5 and interferometry,6 as well as for extending the applicability of quantum detection generally. Here we show that, contrary to current belief,3,4 avalanche photodiodes are capable of detecting photon number, using a technique to measure very weak avalanches at the early stage of their development. Under such conditions the output signal from the avalanche photodiode is proportional to the number of photons in the incident pulse. As a compact, mass-manufactured device, operating without cryogens and at telecom wavelengths, it offers a practical solution for photon number detection.

B. E. Kardynal; Z. L. Yuan; A. J. Shields

2008-07-02T23:59:59.000Z

145

Argonne CNM News: Time-Resolved Measurements Show Colloidal Nanoplatelets  

NLE Websites -- All DOE Office Websites (Extended Search)

Time-Resolved Measurements Show Colloidal Nanoplatelets Act Like Quantum Wells Time-Resolved Measurements Show Colloidal Nanoplatelets Act Like Quantum Wells TEM image of CdSe nanoplatelets Schematic and transmission electron microscope (TEM) image of CdSe nanoplatelets with a thickness of 5 monolayers. The relaxation of high-energy carriers (electrons and holes) in colloidal nanoplatelets have been measured by researchers in the Nanophotonics Group at the Center for Nanoscale Materials, working with colleagues at the University of Chicago. The measurements show that the carriers behave like carriers in quantum wells. Quantum wells have found widespread application in optoelectronics, and the new results suggest that colloidal nanoplatelets should find similar applications, with the added advantage that they can be produced at low cost and in large quantities.

146

Nuclear Power  

Science Journals Connector (OSTI)

Nuclear Power ... THIS WEEKS issue contains six letters on nuclear power, a representative sample of the letters C&EN received in response to the editorial, Resist Hysteria, I wrote shortly after the earthquake and tsunami in Japan devastated the Fukushima Daiichi Nuclear Power Station (C&EN, March 21, page 5). ... Four of the six letters take sharp issue with the primary point I made in the editorial, which was that, despite the severity of the situation in Japan, nuclear power remains an essential component of our overall energy mix for the near to mid-term because it will help us avert the worst impacts of global climate disruption. ...

RUDY M. BAUM

2011-05-09T23:59:59.000Z

147

Power LCAT  

SciTech Connect

POWER LCAT is a software tool used to compare elements of efficiency, cost, and environmental effects between different sources of energy.

Drennen, Thomas

2012-08-15T23:59:59.000Z

148

Yakama Power  

NLE Websites -- All DOE Office Websites (Extended Search)

Power Administration FROM: J.D. Williams Attorney RE: Initial Comments on Draft Load Following Regional Dialogue Contract Template Dear Mark, Please allow these comments...

149

Power LCAT  

ScienceCinema (OSTI)

POWER LCAT is a software tool used to compare elements of efficiency, cost, and environmental effects between different sources of energy.

Drennen, Thomas

2014-06-27T23:59:59.000Z

150

State-Resolved Rotational Excitation in HD + HD Collisions  

Science Journals Connector (OSTI)

A novel pulsed-molecular-beam technique has been used to measure differential cross sections for state-resolved rotational transitions in HD + HD collisions. Inelastic transition probabilities are reported for the rotation-energy-level transitions JAJB=00?JA?JB?=(10,01),11,and(20,02) at a center-of-mass scattering angle at 90 and at several collision energies. A brief description of the apparatus is provided.

W. Ronald Gentry and Clayton F. Giese

1977-11-14T23:59:59.000Z

151

Thought Experiment to resolve the Black Hole Information Paradox  

E-Print Network (OSTI)

We propose a combination of two mechanisms that can resolve the black hole information paradox. The first process is that the black hole shrinks by a first order transition, since we assume the entropy is discontinuous. The black hole disappears. The second type of processes conserves unitarity. We assume that within the black hole micro-reversible quantum mechanical processes take place. These are ordinary particle processes, e.g. the decay of an electron and a positron into two photons.

Kay zum Felde

2014-07-22T23:59:59.000Z

152

Photon-number-resolving detector with 10 bits of resolution  

SciTech Connect

A photon-number-resolving detector with single-photon resolution is described and demonstrated. It has 10 bits of resolution, does not require cryogenic cooling, and is sensitive to near ir wavelengths. This performance is achieved by flood illuminating a 32x32 element In{sub x}Ga{sub 1-x}AsP Geiger-mode avalanche photodiode array that has an integrated counter and digital readout circuit behind each pixel.

Jiang, Leaf A.; Dauler, Eric A.; Chang, Joshua T

2007-06-15T23:59:59.000Z

153

Time-Resolved Study of Bonding in Liquid Carbon  

NLE Websites -- All DOE Office Websites (Extended Search)

Time-Resolved Study of Bonding in Liquid Carbon Print Time-Resolved Study of Bonding in Liquid Carbon Print We are accustomed to observing carbon in its elemental form as a solid, ranging from the soft "lead" in pencils to the precious gemstone in diamond rings. While considerable attention has been focused on solid forms of carbon, the properties of liquid carbon are much more difficult to measure accurately. The very strong bonding between carbon atoms that gives diamonds their hardness also makes carbon very difficult to melt, requiring temperatures above 5000 K at pressures above 100 bar. Maintaining such conditions in a laboratory is a challenge that has hampered efforts to fully understand the chemical bonding properties of this biologically, industrially, and environmentally important element. At the ALS, researchers have found a way to rapidly heat a carbon sample and contain the resulting liquid long enough to perform picosecond time-resolved x-ray absorption spectroscopy. The technique provides a way to measure the bonding properties of liquid carbon at near-solid densities that can then be compared with results from molecular dynamics simulations.

154

Time-Resolved Study of Bonding in Liquid Carbon  

NLE Websites -- All DOE Office Websites (Extended Search)

Time-Resolved Study of Bonding in Liquid Carbon Print Time-Resolved Study of Bonding in Liquid Carbon Print We are accustomed to observing carbon in its elemental form as a solid, ranging from the soft "lead" in pencils to the precious gemstone in diamond rings. While considerable attention has been focused on solid forms of carbon, the properties of liquid carbon are much more difficult to measure accurately. The very strong bonding between carbon atoms that gives diamonds their hardness also makes carbon very difficult to melt, requiring temperatures above 5000 K at pressures above 100 bar. Maintaining such conditions in a laboratory is a challenge that has hampered efforts to fully understand the chemical bonding properties of this biologically, industrially, and environmentally important element. At the ALS, researchers have found a way to rapidly heat a carbon sample and contain the resulting liquid long enough to perform picosecond time-resolved x-ray absorption spectroscopy. The technique provides a way to measure the bonding properties of liquid carbon at near-solid densities that can then be compared with results from molecular dynamics simulations.

155

Time-Resolved Study of Bonding in Liquid Carbon  

NLE Websites -- All DOE Office Websites (Extended Search)

Time-Resolved Study of Bonding in Liquid Carbon Print Time-Resolved Study of Bonding in Liquid Carbon Print We are accustomed to observing carbon in its elemental form as a solid, ranging from the soft "lead" in pencils to the precious gemstone in diamond rings. While considerable attention has been focused on solid forms of carbon, the properties of liquid carbon are much more difficult to measure accurately. The very strong bonding between carbon atoms that gives diamonds their hardness also makes carbon very difficult to melt, requiring temperatures above 5000 K at pressures above 100 bar. Maintaining such conditions in a laboratory is a challenge that has hampered efforts to fully understand the chemical bonding properties of this biologically, industrially, and environmentally important element. At the ALS, researchers have found a way to rapidly heat a carbon sample and contain the resulting liquid long enough to perform picosecond time-resolved x-ray absorption spectroscopy. The technique provides a way to measure the bonding properties of liquid carbon at near-solid densities that can then be compared with results from molecular dynamics simulations.

156

Auger-electron and x-ray production in 50- to 2000-keV Ne+Ne collisions  

Science Journals Connector (OSTI)

The production of vacancies in the inner and outer shells of the target and projectile have been studied in Nei+ + Ne collisions in the incident energy range of 45 keV to 2.2 MeV through the observation of K x rays and Auger electrons. Data are given for incident charge states i=0,1,and2. Parameters necessary for the analysis of collision kinematics were extracted from previous data and used to investigate these effects on the observed Auger spectra. The kinematic line broadening in the Ne collisions is shown to obscure the peak structure characteristic of the multiple ionization states. The centroid energies and average energy widths of the Auger groups, together with absolute intensities, are reported as a function of the Nei+ energy and electron emission angle for both target and projectile. After kinematic corrections, it is found that target and projectile Auger-electron emission are isotropic to within 10% and that the K vacancy created is equally shared between the target and projectile. The average number nA of electrons removed from the L shell simultaneous with the K vacancy production is estimated from the centroid Auger-electron energies and compared with previously measured data. It is found that nA increases with the Ne+ energy from ?2.5-3.6 over the energy range studied. Absolute cross sections for x-ray and Auger-electron production are reported with an accuracy of about 15%, and mean fluorescence yields are determined from these cross-section data. The fluorescence yield increases with incident Ne+-ion energy, and is consistent with the observed degree of L-shell ionization. Total K-vacancy production cross sections agree well with available calculations below 200 keV, but the theoretical results underestimate the cross sections at higher energies. This reflects a breakdown of the two-state approximation made in the calculation. Information regarding the coupling of outer-shell molecular orbitals in the entrance channel is extracted from the comparison of the measured data and previous calculations.

N. Stolterfoht, D. Schneider, D. Burch, B. Aagaard, E. Bving, and B. Fastrup

1975-10-01T23:59:59.000Z

157

Solar Power  

NLE Websites -- All DOE Office Websites (Extended Search)

Solar Power Solar Power Project Opportunities Abound in the Region The WIPP site is receives abundant solar energy with 6-7 kWh/sq meter power production potential As the accompanying map of New Mexico shows, the WIPP site enjoys abundant year-round sunshine. With an average solar power production potential of 6-7 kWh/sq meter per day, one exciting project being studied for location at WIPP is a 30-50 MW Solar Power Tower: The American Solar Energy Society (ASES) is is a national trade association promoting solar energy as a clean source of electricity, and provides a comprehensive resource for additional information. DOE's Office of Energy Efficiency and Renewable Energy is also a comprehensive resource for more information on renewable energy.

158

Power system  

DOE Patents (OSTI)

A power system includes a prime mover, a transmission, and a fluid coupler having a selectively engageable lockup clutch. The fluid coupler may be drivingly connected between the prime mover and the transmission. Additionally, the power system may include a motor/generator drivingly connected to at least one of the prime mover and the transmission. The power-system may also include power-system controls configured to execute a control method. The control method may include selecting one of a plurality of modes of operation of the power system. Additionally, the control method may include controlling the operating state of the lockup clutch dependent upon the mode of operation selected. The control method may also include controlling the operating state of the motor/generator dependent upon the mode of operation selected.

Hickam, Christopher Dale (Glasford, IL)

2008-03-18T23:59:59.000Z

159

Set-up of an XAFS beamline for measurements between 2.4-8 keV at DORIS III  

SciTech Connect

In this paper results from the commissioning phase and from first user experiments of a new EXAFS beamline at the DORIS III storage ring are presented. The bending magnet EXAFS beamline A1 underwent a complete rebuild and now covers the energy range 2.4-8 keV. A Ni-coated toroidal mirror, placed in a 2:1 focusing position and a plane mirror with one Ni coated stripe and one uncoated (SiO{sub 2}) stripe are used for effective higher harmonics suppression and focusing. The UHV-compatible fixed-exit Double Crystal Monochromator (DCM) is equipped with two Si(111) crystal pairs. The second crystal of one of the two crystal pairs is tilted by 90 deg. around the surface normal to shift the position of glitches. It allows Bragg angles between 5 deg. and 55.5 deg. and continuous scans in quick-EXAFS mode. Test measurements during the commissioning phase proved the excellent performance of the monochromator and a high quality of the XAFS spectra over the entire working range.

Welter, Edmund [Deutsches Elektronen-Synchrotron A Research Centre of the Helmholtz Association, Notkestrasse 85, D-22607 Hamburg (Germany)

2010-06-23T23:59:59.000Z

160

FRONTIER, MAGNETIC, ELLIPSOMETRIC AND TIME-RESOLVED INFRARED SPECTROSCOPY (FIS + MET)  

E-Print Network (OSTI)

FRONTIER, MAGNETIC, ELLIPSOMETRIC AND TIME-RESOLVED INFRARED SPECTROSCOPY (FIS + MET) SCIENTIFIC-resolved Frontier Infrared Spectroscopy (FIS) and Magnetic, Ellipsometric and Time-Resolved Infrared Spectroscopy Beamline Team STAFF Larry Carr: MET lead beamline scientist Zhenxian Liu (CIW): FIS lead beamline scientist

Ohta, Shigemi

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Strathclyde powerS ahead  

E-Print Network (OSTI)

Strathclyde powerS ahead the future of renewable energy SHARING AND ENHANCING RESEARCH Discover the vision of Principal Professor Jim McDonald THE FUTURE OF ENERGY Strathclyde pioneers renewableEdicinE Snapshot the reSearcher Following a decade of environmental research in her native egypt, nabila saleem

Mottram, Nigel

162

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

SciTech Connect

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.

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)

2013-10-15T23:59:59.000Z

163

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

E-Print Network (OSTI)

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

Danon, Yaron

164

Where do the 3.5 keV photons come from? A morphological study of the Galactic Center and of Perseus  

E-Print Network (OSTI)

We test the origin of the 3.5 keV line photons by analyzing the morphology of the emission at that energy from the Galactic Center and from the Perseus cluster of galaxies. We employ a variety of different templates to model the continuum emission and analyze the resulting radial and azimuthal distribution of the residual emission. We then perform a pixel-by-pixel binned likelihood analysis including line emission templates and dark matter templates and assess the correlation of the 3.5 keV emission with these templates. We conclude that the radial and azimuthal distribution of the residual emission is incompatible with a dark matter origin for both the Galactic center and Perseus; the Galactic center 3.5 keV line photons trace the morphology of lines at comparable energy, while the Perseus 3.5 keV photons are highly correlated with the cluster's cool core, and exhibit a morphology incompatible with either dark matter decay or with axion-like particle conversions in the cluster's magnetic fields. The template...

Carlson, Eric; Profumo, Stefano

2014-01-01T23:59:59.000Z

165

Energy and fluence calibration of the neutron spectrometer ROSPEC at the IRSN AMANDE facility between 70 keV and 4.5 MeV  

Science Journals Connector (OSTI)

......spectrometer in the energy range 144 keV to 14.8 MeV with ISO energies. Radiat. Prot...eds. (1987) II. New York: Academic Press...Bolognese-Milstajn T. AMANDE: a new facility for monoenergetic...United Kingdom Atomic Energy Authority. AWRE......

M. Benmosbah; B. Asselineau

2009-07-01T23:59:59.000Z

166

Finite-Hilbert-basis-set calculations for the angular distribution of ionized electrons produced in p+H impact at 20 keV  

E-Print Network (OSTI)

We present a different method of extracting the angular distribution of ejected electrons in an ion-atom collision from a two-centered finite Hilbert basis-set calculation. We obtain good agreement with experiment for a p+H collision at 20 keV if we...

Reading, John F.; Fu, J.; Fitzpatrick, M. J.

2004-01-01T23:59:59.000Z

167

Power America  

Energy.gov (U.S. Department of Energy (DOE))

Power America will focus on wide bandgap (WBG) semiconductors - the same materials used in LED light fixtures and many flat screen TVs. The Institute will use $70 million provided by the U.S. Department of Energy's Advanced Manufacturing Office to support and manage its programs over the next five years. This Institute is one of three new innovation hubs announced by President Obama in his 2013 State of the Union address and part of the National Network for Manufacturing Innovation (NNMI). Power America was formerly called the Next Generation Power Electronics National Manufacturing Innovation Institute.

168

Powerful Radio Galaxies with Simbol-X: Lobes and Hot Spots  

SciTech Connect

We present here the first Simbol-X simulations of the extended components, lobes and hot spots, of the radio galaxies. We use the paradigmatic case of Pictor A to test the capabilities of Simbol-X in this field of studies. Simulations demonstrate that Simbol-X will be able not only to perform spatially resolved studies on the lobes of radio galaxies below 10 keV but also to observe, for the first time, hard X-ray emission from the hot spots. These extremely promising results show the considerable potentiality of Simbol-X in studying interaction phenomena between relativistic plasma and surrounding environment.

Migliori, G. [SISSA/ISAS, via Beirut 2-4, I-34014 Trieste (Italy); Grandi, P.; Raimondi, L.; Torresi, E. [INAF/IASF Bologna, viale Gobetti 101, I-40129 Bologna (Italy); Angelini, L. [NASA/Goddard Space Flight Center (United States); Palumbo, G. G. C. [Dipartimento di Astronomia, Universita di Bologna, via Ranzani 1, I-40127 Bologna (Italy)

2009-05-11T23:59:59.000Z

169

Power Projects  

NLE Websites -- All DOE Office Websites (Extended Search)

Power Projects Power Projects Contact SN Customers Environmental Review-NEPA Operations & Maintenance Planning & Projects Power Marketing Rates You are here: SN Home page > About SNR Power Projects Central Valley: In California's Central Valley, 18 dams create reservoirs that can store 13 million acre-feet of water. The project's 615 miles of canals irrigate an area 400 miles long and 45 miles wide--almost one third of California. Powerplants at the dams have an installed capacity of 2,099 megawatts and provide enough energy for 650,000 people. Transmission lines total about 865 circuit-miles. Washoe: This project in west-central Nevada and east-central California was designed to improve the regulation of runoff from the Truckee and Carson river systems and to provide supplemental irrigation water and drainage, as well as water for municipal, industrial and fishery use. The project's Stampede Powerplant has a maximum capacity of 4 MW.

170

Power Struggle  

Science Journals Connector (OSTI)

Disparate forces such as hydraulic fracturing, or fracking, in the U.S.; the phaseout of nuclear power in Germany; and renewable energy promotion in Europe are conspiring to lessen ... ...

ALEX SCOTT

2013-12-09T23:59:59.000Z

171

Time-resolved fluorescence decay measurements for flowing particles  

DOE Patents (OSTI)

Time-resolved fluorescence decay measurements for flowing particles. An apparatus and method for the measurement and analysis of fluorescence for individual cells and particles in flow are described, wherein the rapid measurement capabilities of flow cytometry and the robust measurement and analysis procedures of time-domain fluorescence lifetime spectroscopy are combined. A pulse-modulated cw laser is employed for excitation of the particles. The characteristics and the repetition rate of the excitation pulses can be readily adjusted to accommodate for fluorescence decays having a wide range of lifetimes.

Deka, Chiranjit (Miami, FL); Steinkamp, John A. (Los Alamos, NM)

1999-01-01T23:59:59.000Z

172

Time-resolved fluorescence decay measurements for flowing particles  

DOE Patents (OSTI)

Time-resolved fluorescence decay measurements are disclosed for flowing particles. An apparatus and method for the measurement and analysis of fluorescence for individual cells and particles in flow are described, wherein the rapid measurement capabilities of flow cytometry and the robust measurement and analysis procedures of time-domain fluorescence lifetime spectroscopy are combined. A pulse-modulated CW laser is employed for excitation of the particles. The characteristics and the repetition rate of the excitation pulses can be readily adjusted to accommodate for fluorescence decays having a wide range of lifetimes. 12 figs.

Deka, C.; Steinkamp, J.A.

1999-06-01T23:59:59.000Z

173

Vibrationally resolved photoelectron-spin-polarization spectroscopy of HI molecules  

Science Journals Connector (OSTI)

The photoemission from HI is studied separately for different vibrational levels of the ?2 final ionic states using spin-resolved photoelectron spectroscopy with circularly polarized light. Constant-ionic-state measurements of the cross sections ? and the polarization parameters A indicate that all channels are strongly influenced by autoionization resonances. By combining these data, sums of partial contributions to ? are analyzed in detail to obtain specific information on the coupling of the resonances to the outgoing partial waves ??. Apart from generally similar trends, the results show pronounced variations for different vibrational levels.

N. Bwering; M. Salzmann; M. Mller; H.-W. Klausing; U. Heinzmann

1992-01-01T23:59:59.000Z

174

Variational theory for site resolved protein folding free energy surfaces  

E-Print Network (OSTI)

We present a microscopic variational theory for the free energy surface of a fast folding protein that allows folding kinetics to be resolved to the residue level using Debye-Waller factors as local order parameters. We apply the method to lambda-repressor and compare with site directed mutagenesis experiments. The formation of native structure and the free energy profile along the folding route are shown to be well described by the capillarity approximation but with some fine structure due to local folding topology.

John J. Portman; Shoji Takada; Peter G. Wolynes

1999-01-18T23:59:59.000Z

175

The Dark Energy Survey: Prospects for Resolved Stellar Populations  

Wide angle and deep surveys, regardless of their primary purpose, always sample a large number of stars in the Galaxy and in its satellite system. We here make a forecast of the expected stellar sample resulting from the Dark Energy Survey and the perspectives that it will open for studies of Galactic structure and resolved stellar populations in general. An estimated 1.2 x 10{sup 8} stars will be sampled in DES grizY filters in the southern equatorial hemisphere. This roughly corresponds to 20% of all DES sources. Most of these stars belong to the stellar thick disk and halo of the Galaxy.

Rossetto, Bruno M [Rio de Janeiro Observ.; Santiago, Basilio X [Rio Grande do Sul U.; Rio de Janeiro Observ.; Girardi, Leo [Padua Observ.; Rio de Janeiro Observ.; Camargo, Julio I.B. [Rio de Janeiro Observ.; Balbinot, Eduardo [Rio Grande do Sul U.; Rio de Janeiro Observ.; da Costa, Luiz N [Rio de Janeiro Observ.; Yanny, Brian [Fermilab; Maia, Marcio A.G. [Rio de Janeiro Observ.; Makler, Martin [Rio de Janeiro, CBPF; Rio de Janeiro Observ.; Ogando, Ricardo L.C. [Rio de Janeiro Observ.; Pellegrini, Paulo S [Rio de Janeiro Observ.; Rio de Janeiro Observ.

2011-05-06T23:59:59.000Z

176

Experimental Time Resolved Electron Beam Temperature Measurements Using Bremsstrahlung Diagnostics  

SciTech Connect

Electron beam temperature, {beta}{perpendicular} (= v{perpendicular}/v), is important to control for the development of high dose flash radiographic bremsstrahlung sources. At high voltage (> 5 MV) increasing electron beam temperature has a serious deleterious effect on dose production. The average and time resolved behavior of beam temperature was measured during radiographic experiments on the HERMES III accelerator (10 MV, 50 kA, 70 ns). A linear array of thermoluminescent dosimeters (TLDs) were used to estimate the time integrated average of beam temperature. On and off-axis photoconducting diamond (PCD) detectors were used to measure the time resolved bremsstrahlung dose rate, which is dependent on beam energy and temperature. The beam temperature can be determined by correlating PCD response with accelerator voltage and current and also by analyzing the ratio of PCD amplitudes on and off axis. This ratio is insensitive to voltage and current and thus, is more reliable than utilizing absolute dose rate. The data is unfolded using comparisons with Monte Carlo simulations to obtain absolute beam temperatures. The data taken on HERMES III show abrupt increases in {beta}{perpendicular} midway through the pulse indicating rapid onset of beam instability.

Menge, P.R.; Maenchen, J.E.; Mazarakis, M.G.; Rosenthal, S.E.

1999-06-25T23:59:59.000Z

177

Power inverters  

DOE Patents (OSTI)

Power inverters include a frame and a power module. The frame has a sidewall including an opening and defining a fluid passageway. The power module is coupled to the frame over the opening and includes a substrate, die, and an encasement. The substrate includes a first side, a second side, a center, an outer periphery, and an outer edge, and the first side of the substrate comprises a first outer layer including a metal material. The die are positioned in the substrate center and are coupled to the substrate first side. The encasement is molded over the outer periphery on the substrate first side, the substrate second side, and the substrate outer edge and around the die. The encasement, coupled to the substrate, forms a seal with the metal material. The second side of the substrate is positioned to directly contact a fluid flowing through the fluid passageway.

Miller, David H. (Redondo Beach, CA); Korich, Mark D. (Chino Hills, CA); Smith, Gregory S. (Woodland Hills, CA)

2011-11-15T23:59:59.000Z

178

Experimental investigation of the 100 keV X-ray dose response of the high-temperature thermoluminescence in LiF:Mg,Ti (TLD-100): theoretical interpretation using the unified interaction model  

Science Journals Connector (OSTI)

......measured from 1 to 50 000 Gy using 100 keV X rays at the European Synchroton Radiation Facility. Glow curves were deconvoluted into component...from 1 to 50,000 Gy using 100 keV X rays at the European Synchroton Radiation Facility. Glow curves were deconvoluted into component......

J. Livingstone; Y. S. Horowitz; L. Oster; H. Datz; M. Lerch; A. Rosenfeld; A. Horowitz

2010-03-01T23:59:59.000Z

179

Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Power Right. Power Smart. Efficient Computer Power Supplies and Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. March 10, 2009 - 6:00am Addthis John Lippert Power supplies convert the AC power that you get from your electric company into the DC power consumed by most electronics, including your computer. We expect our power supplies to be safe, reliable, and durable. If they meet those criteria, then they're all alike, except for cost, right? Well, not exactly. You see, there's one other important feature that sets them apart: efficiency. And I don't know about you, but I believe waste is bad. For me, high efficiency is one important feature that's needed for something to be high quality. So isn't it ridiculous that most power

180

Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Power Right. Power Smart. Efficient Computer Power Supplies and Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. March 10, 2009 - 6:00am Addthis John Lippert Power supplies convert the AC power that you get from your electric company into the DC power consumed by most electronics, including your computer. We expect our power supplies to be safe, reliable, and durable. If they meet those criteria, then they're all alike, except for cost, right? Well, not exactly. You see, there's one other important feature that sets them apart: efficiency. And I don't know about you, but I believe waste is bad. For me, high efficiency is one important feature that's needed for something to be high quality. So isn't it ridiculous that most power

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Star Power  

SciTech Connect

The U.S. Department of Energy's Princeton Plasma Physics Laboratory has released ''Star Power,'' a new informational video that uses dramatic and beautiful images and thought-provoking interviews to highlight the importance of the Laboratory's research into magnetic fusion.

None

2014-10-17T23:59:59.000Z

182

Solar Power  

Science Journals Connector (OSTI)

...of desert solar energy farm with 30 percent conversion...85 percent of the solar farm energy now reflected back...Washington, D.C. 20550. Wind Power Martin Wolf (19...counting the cost of the offshore platforms, would thus...15 billion. If these wind generators were placed...

Paul E. Damon

1974-08-09T23:59:59.000Z

183

Star Power  

ScienceCinema (OSTI)

The U.S. Department of Energy's Princeton Plasma Physics Laboratory has released ''Star Power,'' a new informational video that uses dramatic and beautiful images and thought-provoking interviews to highlight the importance of the Laboratory's research into magnetic fusion.

None

2014-11-18T23:59:59.000Z

184

The response of a fast phosphor screen scintillator (ZnO:Ga) to low energy ions (0-60 keV)  

SciTech Connect

ZnO:Ga is a promising, high time resolution candidate for use as a fast-ion-loss detector in TJ-II. We compare its ionoluminescence with that of the standard fast-ion-loss detector material, SrGa{sub 2}S{sub 4}:Eu (also known as TG-Green), when irradiated by H{sup +} ions with a range of energies E{<=}60 keV using a dedicated laboratory setup. It is found that ZnO:Ga is a reasonably good candidate for detecting low energy (E<60 keV) ions as it has excellent time resolution; however, its sensitivity is about 100 times lower than TG-Green, potentially limiting it to applications with high energy ion loss signals.

Jimenez-Rey, D. [Centro de Micro-Analisis de Materiales, Universidad Autonoma de Madrid, C/ Faraday 3, Campus de Cantoblanco, E-28049 Madrid (Spain); Zurro, B.; Baciero, A.; Navarro, M. [Laboratorio Nacional de Fusion, Asociacion Euratom-CIEMAT, Av. Complutense 22, E-28040 Madrid (Spain); Rodriguez-Barquero, L. [Laboratorio de Metrologia de Radiaciones lonizantes, CIEMAT, Av. Complutense 22, E-28040 Madrid (Spain)

2010-10-15T23:59:59.000Z

185

Chemistry Resolved Kinetic Flow Modeling of TATB Based Explosives  

SciTech Connect

Detonation waves in insensitive, TATB based explosives are believed to have multi-time scale regimes. The initial burn rate of such explosives has a sub-microsecond time scale. However, significant late-time slow release in energy is believed to occur due to diffusion limited growth of carbon. In the intermediate time scale concentrations of product species likely change from being in equilibrium to being kinetic rate controlled. They use the thermo-chemical code CHEETAH linked to an ALE hydrodynamics code to model detonations. They term their model chemistry resolved kinetic flow as CHEETAH tracks the time dependent concentrations of individual species in the detonation wave and calculates EOS values based on the concentrations. A HE-validation suite of model simulations compared to experiments at ambient, hot, and cold temperatures has been developed. They present here a new rate model and comparison with experimental data.

Vitello, P A; Fried, L E; Howard, W M; Levesque, G; Souers, P C

2011-07-21T23:59:59.000Z

186

2D-3D transition of gold cluster anions resolved  

Science Journals Connector (OSTI)

Small gold cluster anions Aun? are known for their unusual two-dimensional (2D) structures, giving rise to properties very different from those of bulk gold. Previous experiments and calculations disagree about the number of gold atoms nc where the transition to 3D structures occurs. We combine trapped ion electron diffraction and state of the art electronic structure calculations to resolve this puzzle and establish nc=12. It is shown that theoretical studies using traditional generalized gradient functionals are heavily biased towards 2D structures. For a correct prediction of the 2D-3D crossover point it is crucial to use density functionals yielding accurate jellium surface energies, such as the Tao-Perdew-Staroverov-Scuseria (TPSS) functional or the Perdew-Burke-Ernzerhof functional modified for solids (PBEsol). Further, spin-orbit effects have to be included, and large, flexible basis sets employed. This combined theoretical-experimental approach is promising for larger gold and other metal clusters.

Mikael P. Johansson; Anne Lechtken; Detlef Schooss; Manfred M. Kappes; Filipp Furche

2008-05-19T23:59:59.000Z

187

Spectrally resolved motional Stark effect measurements on ASDEX Upgrade  

SciTech Connect

A spectrally resolved Motional Stark Effect (MSE) diagnostic has been installed at ASDEX Upgrade. The MSE data have been fitted by a forward model providing access to information about the magnetic field in the plasma interior [R. Reimer, A. Dinklage, J. Geiger et al., Contrib. Plasma Phys. 50, 731735 (2010)]. The forward model for the beam emission spectra comprises also the fast ion D{sub ?} signal [W. W. Heidbrink and G. J. Sadler, Nucl. Fusion 34, 535615 (1994)] and the smearing on the CCD-chip. The calculated magnetic field data as well as the revealed (dia)magnetic effects are consistent with the results from equilibrium reconstruction solver. Measurements of the direction of the magnetic field are affected by unknown and varying polarization effects in the observation.

Reimer, R.; Dinklage, A.; Wolf, R. [Max-Planck-Institut fr Plasmaphysik, EURATOM Association, Teilinstitut Greifswald, Wendelsteinstrae 1, 17491 Greifswald (Germany)] [Max-Planck-Institut fr Plasmaphysik, EURATOM Association, Teilinstitut Greifswald, Wendelsteinstrae 1, 17491 Greifswald (Germany); Fischer, R.; Hobirk, J.; Lbhard, T.; Mlynek, A.; Reich, M. [Max-Planck-Institut fr Plasmaphysik, EURATOM Association, Boltzmannstrae 2, 85748 Garching (Germany)] [Max-Planck-Institut fr Plasmaphysik, EURATOM Association, Boltzmannstrae 2, 85748 Garching (Germany); Sawyer, L. [Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH (United Kingdom)] [Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH (United Kingdom); Collaboration: ASDEX Upgrade

2013-11-15T23:59:59.000Z

188

Theoretical description of spin-resolved appearance potential spectroscopy  

Science Journals Connector (OSTI)

A theoretical description of spin-resolved appearance potential spectroscopy is presented on the basis of a single-particle description of the underlying electronic structure. The final expression for the signal intensity turns out to be essentially a cross-section-weighted self-convolution of the density of states above the Fermi energy, in close analogy to the result for core-valence-valence Auger electron spectroscopy. Application of the formalism presented to bcc Fe and fcc Ni leads to results in very satisfying agreement with corresponding experimental data. Because this is achieved only by treating the involved transition matrix elements in a proper way, their properties are discussed in some detail.

H. Ebert and V. Popescu

1997-11-15T23:59:59.000Z

189

Rotationally resolved threshold photoionization of H{sub 2}S  

SciTech Connect

With the recent development of zero kinetic energy threshold photoelectron spectroscopy (ZEKE-PES) it is now possible to take advantage of the high resolution capabilities of laser radiation and measure the rotational distributions of many small cations produced via photoionization. We have used threshold photoelectron spectroscopy in conjunction with a VUV laser source to probe the rotational distributions of several molecular cations following one- photon VUV photoionization. Spectra are obtained by the delayed, pulsed field ionization (PFI) method which is a variant of the ZEKE- PES technique. In this paper, we report on the rotationally-resolved threshold photoelectron spectra of the non-linear triatomic H{sub 2}S. These measurements are an extension of our earlier study on H{sub 2}O which provided the first look at the symmetry properties of allowed rotational transitions in the photoionization of non-linear molecules.

Wiedmann, R.T.; White, M.G.

1991-12-31T23:59:59.000Z

190

Rotationally resolved threshold photoionization of H sub 2 S  

SciTech Connect

With the recent development of zero kinetic energy threshold photoelectron spectroscopy (ZEKE-PES) it is now possible to take advantage of the high resolution capabilities of laser radiation and measure the rotational distributions of many small cations produced via photoionization. We have used threshold photoelectron spectroscopy in conjunction with a VUV laser source to probe the rotational distributions of several molecular cations following one- photon VUV photoionization. Spectra are obtained by the delayed, pulsed field ionization (PFI) method which is a variant of the ZEKE- PES technique. In this paper, we report on the rotationally-resolved threshold photoelectron spectra of the non-linear triatomic H{sub 2}S. These measurements are an extension of our earlier study on H{sub 2}O which provided the first look at the symmetry properties of allowed rotational transitions in the photoionization of non-linear molecules.

Wiedmann, R.T.; White, M.G.

1991-01-01T23:59:59.000Z

191

Power Factor Compensation (PFC) Power Factor Compensation  

E-Print Network (OSTI)

Power Factor Compensation (PFC) Power Factor Compensation The power factor (PF) is defined as the ratio between the active power and the apparent power of a system. If the current and voltage are periodic with period , and [ ), then the active power is defined by ( ) ( ) (their inner product

Knobloch,Jürgen

192

Development of a soft x-ray diffractometer for a wideband multilayer grating with a novel layer structure in the 2-4 keV range  

SciTech Connect

We have been developing a wavelength-dispersive soft x-ray spectrograph covering an energy region of 50-4000 eV to attach to a conventional electron microscope. Observation of soft x-ray emission in the 2-4 keV range needs a multilayer coated grating. In order to evaluate the performance of the optical component in the energy region, a goniometric apparatus has been newly developed and the preliminary performance has been tested using synchrotron radiation.

Imazono, Takashi; Koike, Masato; Kawachi, Tetsuya; Hasegawa, Noboru; Koeda, Masaru; Nagano, Tetsuya; Sasai, Hiroyuki; Oue, Yuki; Yonezawa, Zeno; Kuramoto, Satoshi; Terauchi, Masami; Takahashi, Hideyuki; Handa, Nobuo; Murano, Takanori [Quantum Beam Science Directorate, Japan Atomic Energy Agency, 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215 (Japan); Device Dept., Shimadzu Corp., 1 Nishinokyo-Kuwabara-cho, Nakagyo-ku, Kyoto 604-8511 (Japan); IMRAM, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577 (Japan); ECBU, JEOL Ltd., 3-1-2 Musashino, Akishima, Tokyo 196-8558 (Japan)

2012-07-11T23:59:59.000Z

193

Spatially Resolved STIS Spectroscopy of Betelgeuse's Outer Atmosphere  

E-Print Network (OSTI)

We present spatially resolved spectra observed with HST-STIS of the upper chromosphere and dust envelope of Alpha Orionis (M2 Iab). In the fall of 2002 a set of five high-resolution near-UV spectra was obtained by scanning at intensity peak-up position and four off-limb target positions up to one arcsecond, using a small aperture, to investigate the thermal conditions and flow dynamics in the outer atmosphere of this important nearby cool supergiant star. Based on Mg II h & k, Fe II 2716 A, C II 2327 A, and Al II ] 2669 A emission lines we provide the first evidence for the presence of warm chromospheric plasma at least 1 arcsecond away from the star at ~40 R* (1 R*~700 Rsun). The STIS spectra reveal that Betelgeuse's upper chromosphere extends far beyond the circumstellar H alpha envelope of ~5 R*, determined from previous ground-based imaging. The flux in the broad and self-absorbed resonance lines of Mg II decreases by a factor of ~700 compared to the flux at chromospheric disk center. We observe strong asymmetry changes in the Mg II h and Si I resonance line profiles when scanning off-limb, signaling the outward acceleration of gas outflow in the upper chromosphere. From the radial intensity distributions of Fe I and Fe II emission lines we determine the radial non-LTE iron ionization balance. We compute that the local kinetic gas temperatures of the warm chromospheric gas component in the outer atmosphere exceed 2600 K, when assuming local gas densities of the cool gas component we determine from radiative transfer models that fit the 9.7 um silicate dust emission feature. The spatially resolved STIS spectra directly demonstrate that warm chromospheric plasma co-exisists with cool gas in Betelgeuse's circumstellar dust envelope.

A. Lobel; J. Aufdenberg; A. K. Dupree; R. L. Kurucz; R. P. Stefanik; G. Torres

2003-12-03T23:59:59.000Z

194

Angular scattering of 150 keV ions through graphene and thin carbon foils: Potential applications for space plasma instrumentation  

SciTech Connect

We present experimental results for the angular scattering of ?150 keV H, He, C, O, N, Ne, and Ar ions transiting through graphene foils and compare them with scattering through nominal ?0.5 ?g?cm{sup ?2} carbon foils. Thin carbon foils play a critical role in time-of-flight ion mass spectrometers and energetic neutral atom sensors in space. These instruments take advantage of the charge exchange and secondary electron emission produced as ions or neutral atoms transit these foils. This interaction also produces angular scattering and energy straggling for the incident ion or neutral atom that acts to decrease the performance of a given instrument. Our results show that the angular scattering of ions through graphene is less pronounced than through the state-of-the-art 0.5 ?g?cm{sup ?2} carbon foils used in space-based particle detectors. At energies less than 50 keV, the scattering angle half width at half maximum, ?{sub 1/2}, for ?35 atoms thick graphene is up to a factor of 3.5 smaller than for 0.5 ?g?cm{sup ?2} (?20 atoms thick) carbon foils. Thus, graphene foils have the potential to improve the performance of space-based plasma instruments for energies below ?50 keV.

Ebert, Robert W., E-mail: rebert@swri.edu [Southwest Research Institute, P. O. Drawer 28510, San Antonio, Texas 78228-0510 (United States); Allegrini, Frdric; Fuselier, Stephen A.; Nicolaou, Georgios [Southwest Research Institute, P. O. Drawer 28510, San Antonio, Texas 78228-0510 (United States) [Southwest Research Institute, P. O. Drawer 28510, San Antonio, Texas 78228-0510 (United States); Physics and Astronomy Department, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249 (United States); Bedworth, Peter; Sinton, Steve [Lockheed Martin Advanced Technology Center, 3251 Hanover Street, Palo Alto, California 94304 (United States)] [Lockheed Martin Advanced Technology Center, 3251 Hanover Street, Palo Alto, California 94304 (United States); Trattner, Karlheinz J. [Lockheed Martin Advanced Technology Center, 3251 Hanover Street, Palo Alto, California 94304 (United States) [Lockheed Martin Advanced Technology Center, 3251 Hanover Street, Palo Alto, California 94304 (United States); Laboratory for Atmospheric and Space Physics, University of Colorado, 1234 Innovation Drive, Boulder, Colorado 80303 (United States)

2014-03-15T23:59:59.000Z

195

Double-electron capture on {sup 112}Sn to the excited 1871 keV state in {sup 112}Cd: A possible alternative to double-{beta} decay  

SciTech Connect

We report the first use of a coincidence technique to study neutrinoless double-electron capture (0{nu}ECEC) to an excited state in the daughter nucleus. We investigated 0{nu}ECEC by {sup 112}Sn leading to the possibly degenerate 1871 keV excited state in {sup 112}Cd by searching for its deexcitation {gamma} rays of 1253 keV and 618 keV in coincidence. The experiment was performed at ground level. A sample of 3.91 g of tin enriched to 99.5% in {sup 112}Sn was placed between two high-purity germanium {gamma}-ray detectors. In order to enhance the sample material, rods of natural tin totaling 1.2 kg (natural abundance 0.97%{sup 112}Sn) surrounded the cylindrical surface of our two {gamma}-ray detectors. After an exposure of 1.59 kg x days of {sup 112}Sn, no decays were observed. From this null result we determine a lower limit for the half-life time of T{sub 1/2}>2.7(1.3)x10{sup 19} yr (68%(90%) CL). We hope to achieve a sensitivity in the 10{sup 23} to 10{sup 24} yr range with a sample of a few kg of {sup 112}Sn and improved {gamma}-ray detectors in an underground facility.

Kidd, M. F.; Esterline, J. H.; Tornow, W. [Department of Physics, Duke University and Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708-0308 (United States)

2008-09-15T23:59:59.000Z

196

Power superconducting power transmission cable  

DOE Patents (OSTI)

The present invention is for a compact superconducting power transmission cable operating at distribution level voltages. The superconducting cable is a conductor with a number of tapes assembled into a subconductor. These conductors are then mounted co-planarly in an elongated dielectric to produce a 3-phase cable. The arrangement increases the magnetic field parallel to the tapes thereby reducing ac losses.

Ashworth, Stephen P. (Cambridge, GB)

2003-01-01T23:59:59.000Z

197

Power Search  

NLE Websites -- All DOE Office Websites (Extended Search)

You are here: Find a Car Home > Power Search You are here: Find a Car Home > Power Search Power Search Expand any feature by selecting its title bar. Choose as many or as few features as you like. Model Year From: 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 To: 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 MSRP Under $15,000 $15,000-$20,000 $20,000-$25,000 $25,000-$30,000 $30,000-$35,000 $35,000-$40,000 $40,000-$45,000 $45,000-$50,000 $50,000-$55,000 $55,000-$60,000 $60,000-$65,000 $65,000-$70,000 $70,000-$75,000 $75,000-$80,000 $80,000-$85,000 Over $85,000 - OR - Minimum: Select... $5,000 $6,000 $7,000 $8,000 $9,000 $10,000 $11,000

198

E-Print Network 3.0 - angled-resolved photoelectron spectroscopy...  

NLE Websites -- All DOE Office Websites (Extended Search)

state was visible by angle-resolved valence band photoelectron spectroscopy, and that the LEED... -dependence of the ... Source: Ortega, Enrique - Donostia International Physics...

199

Protein crystallography with spallation neutrons: collecting and processing wavelength-resolved Laue protein data  

Science Journals Connector (OSTI)

Methods for collecting and processing wavelength-resolved Laue data at the protein crystallography station at Los Alamos Neutron Science Center have been developed.

Langan, P.

2004-03-17T23:59:59.000Z

200

Human Cardiac High-Energy Phosphate Metabolite Concentrationsby ID-Resolved NMR Spectroscopy  

E-Print Network (OSTI)

Human Cardiac High-Energy Phosphate Metabolite Concentrationsby ID-Resolved NMR Spectroscopy Paul A myocytes can contribute no metabolite signal to the observed spectrum, the hypoth- esis

Atalar, Ergin

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

EGR Spatial Uniformity & Cylinder-Resolved Transients-Measurements using an Absorption Spectroscopy Probe  

Energy.gov (U.S. Department of Energy (DOE))

This poster describes development and application of an EGR probe for assessing steady-state spatial uniformity and cylinder-resolved EGR dynamics.

202

E-Print Network 3.0 - applying spatially resolved Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Mining, Modelling and Management, Vol. 1, No. 1, 2008 103 A relational perspective on spatial data mining Summary: that must be resolved before the relational approach can be...

203

E-Print Network 3.0 - angle-resolved photoemission extended Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

photoemission evidence for a Gd(0001) surface state Dongqi Lia, C.W. Hutchings... April 1991. Available online 31 July 2002. Abstract From angle resolved photoemission we have...

204

Solar Energy Conversion Processes in Nanostructured Materials Studied via Time-Resolved THz Spectroscopy  

Science Journals Connector (OSTI)

We discuss time-resolved THz spectroscopy measurements for three important solar energy conversion approaches; (1) electronically coupled semiconductor nanocrystals, (2) a bulk...

Beard, Matt; Blackburn, Jeffery; Heben, Michael; Ai, Xin; Rumbles, Garry; Ellingson, Randy J; Nozik, Arthur J

205

E-Print Network 3.0 - antibody-based time-resolved fluorescence...  

NLE Websites -- All DOE Office Websites (Extended Search)

Pt-coproporphyrin; Homo- geneous immunoassay; Polychlorinated dibenzo-p-dioxins; Time-resolved... a monoclonal antibody-based ELISA test (5-8). The optimized assay...

206

Power Right. Power Smart. Efficient Computer Power Supplies and...  

Energy Savers (EERE)

lot of the electricity they consume? Higher efficiency power supplies reduce energy consumption, thus cutting your electricity bill. They reduce power consumption, helping your...

207

Wind power and Wind power and  

E-Print Network (OSTI)

Wind power and the CDM #12; Wind power and the CDM Emerging practices in developing wind power 2005 Jyoti P. Painuly, Niels-Erik Clausen, Jørgen Fenhann, Sami Kamel and Romeo Pacudan #12; WIND POWER AND THE CDM Emerging practices in developing wind power projects for the Clean Development Mechanism Energy

208

Power Recovery  

E-Print Network (OSTI)

) - 2,870,000 x 0.8 6 W - 3414 = 70 kw (or 900 hp). When recovering power from an expanding gas, consideration should be given to the final gas temperature. This tem;:>f'rature can be estimated by the formula: T 2 Final temperature, oR. Other... with the requirements make generation fqr more useful. Presently a recovery level of around 500 kw (or 657 hp) appears to be the minimum level which will support an in stallation. In order to achieve reasonable effi ciency, quality equipment with good control...

Murray, F.

209

A scintillator-based online detector for the angularly resolved measurement of laser-accelerated proton spectra  

SciTech Connect

In recent years, a new generation of high repetition rate ({approx}10 Hz), high power ({approx}100 TW) laser systems has stimulated intense research on laser-driven sources for fast protons. Considering experimental instrumentation, this development requires online diagnostics for protons to be added to the established offline detection tools such as solid state track detectors or radiochromic films. In this article, we present the design and characterization of a scintillator-based online detector that gives access to the angularly resolved proton distribution along one spatial dimension and resolves 10 different proton energy ranges. Conceived as an online detector for key parameters in laser-proton acceleration, such as the maximum proton energy and the angular distribution, the detector features a spatial resolution of {approx}1.3 mm and a spectral resolution better than 1.5 MeV for a maximum proton energy above 12 MeV in the current design. Regarding its areas of application, we consider the detector a useful complement to radiochromic films and Thomson parabola spectrometers, capable to give immediate feedback on the experimental performance. The detector was characterized at an electrostatic Van de Graaff tandetron accelerator and tested in a laser-proton acceleration experiment, proving its suitability as a diagnostic device for laser-accelerated protons.

Metzkes, J.; Kraft, S. D.; Sobiella, M.; Stiller, N.; Zeil, K.; Schramm, U. [Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstr. 400, 01328 Dresden (Germany); Karsch, L.; Schuerer, M. [OncoRay - National Center for Radiation Research in Oncology, TU Dresden, Fetscherstr. 74, 01307 Dresden (Germany); Pawelke, J.; Richter, C. [Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstr. 400, 01328 Dresden (Germany); OncoRay - National Center for Radiation Research in Oncology, TU Dresden, Fetscherstr. 74, 01307 Dresden (Germany)

2012-12-15T23:59:59.000Z

210

Spectrally Resolved Magnetic Resonance Imaging of the XenonBiosensor  

SciTech Connect

Due to its ability to non-invasively record images, as well as elucidate molecular structure, nuclear magnetic resonance is the method of choice for applications as widespread as chemical analysis and medical diagnostics. Its detection threshold is, however, limited by the small polarization of nuclear spins in even the highest available magnetic fields. This limitation can, under certain circumstances, be alleviated by using hyper-polarized substances. Xenon biosensors make use of the sensitivity gain of hyperpolarized xenon to provide magnetic resonance detection capability for a specific low-concentration target. They consist of a cryptophane cage, which binds one xenon atom, and which has been connected via a linker to a targeting moiety such as a ligand or antibody. Recent work has shown the possibility of using the xenon biosensor to detect small amounts of a substance in a heterogeneous environment by NMR. Here, we demonstrate that magnetic resonance (MR) provides the capability to obtain spectrally and spatially resolved images of the distribution of immobilized biosensor, opening the possibility for using the xenon biosensor for targeted imaging.

Hilty, Christian; Lowery, Thomas; Wemmer, David; Pines, Alexander

2005-07-15T23:59:59.000Z

211

Constraining warm dark matter with cosmic shear power spectra  

SciTech Connect

We investigate potential constraints from cosmic shear on the dark matter particle mass, assuming all dark matter is made up of light thermal relic particles. Given the theoretical uncertainties involved in making cosmological predictions in such warm dark matter scenarios we use analytical fits to linear warm dark matter power spectra and compare (i) the halo model using a mass function evaluated from these linear power spectra and (ii) an analytical fit to the non-linear evolution of the linear power spectra. We optimistically ignore the competing effect of baryons for this work. We find approach (ii) to be conservative compared to approach (i). We evaluate cosmological constraints using these methods, marginalising over four other cosmological parameters. Using the more conservative method we find that a Euclid-like weak lensing survey together with constraints from the Planck cosmic microwave background mission primary anisotropies could achieve a lower limit on the particle mass of 2.5 keV.

Markovic, Katarina; Weller, Jochen [University Observatory Munich, Ludwig-Maximilian University, Scheinerstr. 1, 81679 Munich (Germany); Bridle, Sarah [Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT (United Kingdom); Slosar, Ane, E-mail: markovic@usm.lmu.de, E-mail: sarah.bridle@ucl.ac.uk, E-mail: anze@bnl.gov, E-mail: jochen.weller@usm.lmu.de [Brookhaven National Laboratory, Building 510A, Upton, NY 11973-5000 (United States)

2011-01-01T23:59:59.000Z

212

Power transaction issues in deregulated power systems  

E-Print Network (OSTI)

With the introduction of the deregulation in the power industry, it becomes possible to wheel power across the transmission network. Hence, some issues involving the network's physical capability to transfer power and the allocation of the network...

Roycourt, Henrik

2012-06-07T23:59:59.000Z

213

Study of Multi-Scale Cloud Processes Over the Tropical Western Pacific Using Cloud-Resolving Models Constrained by Satellite Data  

SciTech Connect

Clouds in the tropical western Pacific are an integral part of the large scale environment. An improved understanding of the multi-scale structure of clouds and their interactions with the environment is critical to the ARM (Atmospheric Radiation Measurement) program for developing and evaluating cloud parameterizations, understanding the consequences of model biases, and providing a context for interpreting the observational data collected over the ARM Tropical Western Pacific (TWP) sites. Three-dimensional cloud resolving models (CRMs) are powerful tools for developing and evaluating cloud parameterizations. However, a significant challenge in using CRMs in the TWP is that the region lacks conventional data, so large uncertainty exists in defining the large-scale environment for clouds. This project links several aspects of the ARM program, from measurements to providing improved analyses, and from cloud-resolving modeling to climate-scale modeling and parameterization development, with the overall objective to improve the representations of clouds in climate models and to simulate and quantify resolved cloud effects on the large-scale environment. Our objectives will be achieved through a series of tasks focusing on the use of the Weather Research and Forecasting (WRF) model and ARM data. Our approach includes: -- Perform assimilation of COSMIC GPS radio occultation and other satellites products using the WRF Ensemble Kalman Filter assimilation system to represent the tropical large-scale environment at 36 km grid resolution. This high-resolution analysis can be used by the community to derive forcing products for single-column models or cloud-resolving models. -- Perform cloud-resolving simulations using WRF and its nesting capabilities, driven by the improved regional analysis and evaluate the simulations against ARM datasets such as from TWP-ICE to optimize the microphysics parameters for this region. A cirrus study (Mace and co-authors) already exists for TWP-ICE using satellite and ground-based observations. -- Perform numerical experiments using WRF to investigate how convection over tropical islands in the Maritime Continent interacts with large-scale circulation and affects convection in nearby regions. -- Evaluate and apply WRF as a testbed for GCM cloud parameterizations, utilizing the ability of WRF to run on multiple scales (from cloud resolving to global) to isolate resolution and physics issues from dynamical and model framework issues. Key products will be disseminated to the ARM and larger community through distribution of data archives, including model outputs from the data assimilation products and cloud resolving simulations, and publications.

Dudhia, Jimy

2013-03-12T23:59:59.000Z

214

PERSPECTIVE Resolving the biodiversity paradox James S. Clark,1,2,3  

E-Print Network (OSTI)

IDEA AND PERSPECTIVE Resolving the biodiversity paradox James S. Clark,1,2,3 * Mike Dietze,1 The paradox of biodiversity involves three elements, (i) mathematical models predict that species must differ-dimensional tradeoffs nor neutrality can resolve the biodiversity paradox, in part by showing that they do not properly

Agarwal, Pankaj K.

215

Time-Resolved Small-Angle Neutron Scattering Study of Polyethylene Crystallization from Solution  

E-Print Network (OSTI)

Time-Resolved Small-Angle Neutron Scattering Study of Polyethylene Crystallization from Solution-resolved small-angle neutron scattering (TR-SANS), the crystal- lization kinetics of polyethylene from deuterated of polyethylene crystallization from xylene solutions. One unique feature of this experimentation is that both

Wang, Howard "Hao"

216

Cloud Tracking in Cloud-Resolving Models R. S. Plant1  

E-Print Network (OSTI)

Cloud Tracking in Cloud-Resolving Models R. S. Plant1 1 Department of Meteorology, University. INTRODUCTION In recent years Cloud Resolving Models (CRMs) have become an increasingly important tool for CRM data, which allows one to investigate statistical prop- erties of the lifecycles of the "clouds

Plant, Robert

217

Time-Resolved Molecular Characterization of Limonene/Ozone Aerosol using High-Resolution Electrospray Ionization Mass Spectrometry  

SciTech Connect

Molecular composition of limonene/O3 secondary organic aerosol (SOA) was investigated using high-resolution electrospray ionization mass spectrometry (HR-ESI-MS) as a function of reaction time. SOA was generated by ozonation of D-limonene in a reaction chamber and sampled at different time intervals using a cascade impactor. The SOA samples were extracted into acetonitrile and analyzed using a HR-ESI-MS instrument with a resolving power of 100,000 (m/?m). The resulting mass spectra provided detailed information about the extent of oxidation inferred from the O:C ratios, double bond equivalency (DBE) factors, and aromaticity indexes (AI) in hundreds of identified individual SOA species.

Bateman, Adam P.; Nizkorodov, Serguei; Laskin, Julia; Laskin, Alexander

2009-09-09T23:59:59.000Z

218

ELECTROCHEMICAL POWER FOR TRANSPORTATION  

E-Print Network (OSTI)

and Battery-Electric Powered Special Purpose Vehicles, SAELead-Acid Powered Electric Vehicles, Fifth Internationalmeantime, battery-powered electric vehicles can be expected

Cairns, Elton J.

2012-01-01T23:59:59.000Z

219

Southwestern Power Administration  

NLE Websites -- All DOE Office Websites (Extended Search)

Courses Instructors NERC Continuing Education Power Operations Training Center You'll find the "Power" of learning at Southwestern's Power Operations Training Center (POTC). POTC's...

220

Southwestern Power Administration  

NLE Websites -- All DOE Office Websites (Extended Search)

Rate Schedules Skip Navigation Links Excess Energy Hydro Peaking Power Hydro Power and Energy Sold to Sam Rayburn Dam Electric Cooperative (Rayburn) Hydro Power and Energy Sold to...

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

2025 Power Marketing Initiative  

NLE Websites -- All DOE Office Websites (Extended Search)

Power Allocations Rates 2025 Power Marketing Initiative The Loveland Area Projects (LAP) Firm Electric Service (FES) contracts expire September 30, 2024. Western Area Power...

222

Power management system  

DOE Patents (OSTI)

A method of managing power resources for an electrical system of a vehicle may include identifying enabled power sources from among a plurality of power sources in electrical communication with the electrical system and calculating a threshold power value for the enabled power sources. A total power load placed on the electrical system by one or more power consumers may be measured. If the total power load exceeds the threshold power value, then a determination may be made as to whether one or more additional power sources is available from among the plurality of power sources. At least one of the one or more additional power sources may be enabled, if available.

Algrain, Marcelo C. (Peoria, IL); Johnson, Kris W. (Washington, IL); Akasam, Sivaprasad (Peoria, IL); Hoff, Brian D. (East Peoria, IL)

2007-10-02T23:59:59.000Z

223

T-571: Linux Kernel dns_resolver Key Processing Error Lets Local Users Deny  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1: Linux Kernel dns_resolver Key Processing Error Lets Local 1: Linux Kernel dns_resolver Key Processing Error Lets Local Users Deny Services T-571: Linux Kernel dns_resolver Key Processing Error Lets Local Users Deny Services March 7, 2011 - 3:05pm Addthis PROBLEM: Linux Kernel dns_resolver Key Processing Error Lets Local Users Deny Services. PLATFORM: Linux Kernel 2.6.37 and prior versions ABSTRACT: A vulnerability was reported in the Linux Kernel. A local user can cause denial of service conditions. reference LINKS: SecurityTracker Alert ID:1025162 Latest Stable Kernel CVE-2011-1076 IMPACT ASSESSMENT: High Discussion: When a DNS resolver key is instantiated with an error indication, a local user can attempt to read the key to trigger a null pointer dereference and cause a kernel crash. A local user can cause the target system to crash.

224

DOE Resolves Nearly One-Third of 27 Recently Filed Civil Penalty Cases |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Resolves Nearly One-Third of 27 Recently Filed Civil Penalty Resolves Nearly One-Third of 27 Recently Filed Civil Penalty Cases DOE Resolves Nearly One-Third of 27 Recently Filed Civil Penalty Cases September 23, 2010 - 5:14pm Addthis The Department has successfully resolved eight of the 27 enforcement cases brought just two weeks ago against companies for selling products without properly certifying their compliance with the Department's conservation standards. The swift resolution of nearly one-third of these cases reflects the central goal of the Department's enforcement effort - compliance with all aspects of the Department's regulations to ensure that consumers have the information they need to buy energy and cost saving products. Each of the eight companies responded promptly to the Department's notice, cooperated fully to resolve all issues, and committed to certifying

225

New emission line at ~3.5 keV - observational status, connection with radiatively decaying dark matter and directions for future studies  

E-Print Network (OSTI)

Recent works of [1402.2301,1402.4119], claiming the detection of extra emission line with energy ~3.5 keV in X-ray spectra of certain clusters of galaxies and nearby Andromeda galaxy, have raised considerable interest in astrophysics and particle physics communities. A number of new observational studies claim detection or non-detection of the extra line in X-ray spectra of various cosmic objects. In this review I summarize existing results of these studies, overview possible interpretations of the extra line, including intriguing connection with radiatively decaying dark matter, and show future directions achievable with existing and planned X-ray cosmic missions.

Iakubovskyi, Dmytro

2014-01-01T23:59:59.000Z

226

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

E-Print Network (OSTI)

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.

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

2008-02-11T23:59:59.000Z

227

Angular and energy dependence of cross sections for ejection of electrons from water vapor. III. 20150-keV neutral-hydrogen impact  

Science Journals Connector (OSTI)

Absolute values of cross sections for electron production in collisions of neutral hydrogen atoms of 20150 keV energy with water vapor molecules have been measured as a function of the ejection energy and angle. The range of angles was 10 to 160 and the electron energy range was 1300 eV. The doubly differential cross sections were integrated over angle and/or energy to obtain singly differential cross sections, total electron production cross sections, and average energies of ejection. The angular distribution of the electron loss peak was found to have some features in common with the cross section for elastic scattering of electrons.

M. A. Bolorizadeh and M. E. Rudd

1986-02-01T23:59:59.000Z

228

Reduction in the intensity of solar X-ray emission in the 2- to 15-keV photon energy range and heating of the solar corona  

SciTech Connect

The time profiles of the energy spectra of low-intensity flares and the structure of the thermal background of the soft X-ray component of solar corona emission over the period of January-February, 2003, are investigated using the data of the RHESSI project. A reduction in the intensity of X-ray emission of the solar flares and the corona thermal background in the 2- to 15-keV photon energy range is revealed. The RHESSI data are compared with the data from the Interball-Geotail project. A new mechanism of solar corona heating is proposed on the basis of the results obtained.

Mirzoeva, I. K., E-mail: colombo2006@mail.ru [Russian Academy of Sciences, Space Research Institute (Russian Federation)

2013-04-15T23:59:59.000Z

229

Facilities and techniques for x-ray diagnostic calibration in the 100-eV to 100-keV energy range  

SciTech Connect

The Lawrence Livermore National Laboratory (LLNL) has been a pioneer in the field of x-ray diagnostic calibration for more than 20 years. We have built steady state x-ray sources capable of supplying fluorescent lines of high spectral purity in the 100-eV to 100-keV energy range, and these sources have been used in the calibration of x-ray detectors, mirrors, crystals, filters, and film. This paper discusses our calibration philosophy and techniques, and describes some of our x-ray sources. Examples of actual calibration data are presented as well.

Gaines, J.L.; Wittmayer, F.J.

1986-06-01T23:59:59.000Z

230

Spatially Resolved Galaxy Star Formation and its Environmental Dependence I  

E-Print Network (OSTI)

We use the photometric information contained in individual pixels of 44,964 (0.019effects of environment on galaxy star formation (SF). We use the pixel-z technique, which combines stellar population synthesis models with photometric redshift template fitting on the scale of individual pixels in galaxy images. Spectral energy distributions are constructed, sampling a wide range of properties such as age, star formation rate (SFR), dust obscuration and metallicity. By summing the SFRs in the pixels, we demonstrate that the distribution of total galaxy SFR shifts to lower values as the local density of surrounding galaxies increases, as found in other studies. The effect is most prominent in the galaxies with the highest star formation, and we see the break in the SFR-density relation at a local galaxy density of $\\approx 0.05 $(Mpc/h)$^{-3}$. Since our method allows us to spatially resolve the SF distribution within galaxies, we can calculate the mean SFR of each galaxy as a function of radius. We find that on average the mean SFR is dominated by SF in the central regions of galaxies, and that the trend for suppression of SFR in high density environments is driven by a reduction in this nuclear SF. We also find that the mean SFR in the outskirts is largely independent of environmental effects. This trend in the mean SFR is shared by galaxies which are highly star forming, while those which are weakly star forming show no statistically significant correlation between their environment and the mean SFR at any radius.

Niraj Welikala; Andrew J. Connolly; Andrew M. Hopkins; Ryan Scranton; Alberto Conti

2007-12-25T23:59:59.000Z

231

Efficient data IO for a Parallel Global Cloud Resolving Model  

SciTech Connect

Execution of a Global Cloud Resolving Model (GCRM) at target resolutions of 2-4 km will generate, at a minimum, 10s of Gigabytes of data per variable per snapshot. Writing this data to disk without creating a serious bottleneck in the execution of the GCRM code while also supporting efficient post-execution data analysis is a significant challenge. This paper discusses an Input/Output (IO) application programmer interface (API) for the GCRM that efficiently moves data from the model to disk while maintaining support for community standard formats, avoiding the creation of very large numbers of files, and supporting efficient analysis. Several aspects of the API will be discussed in detail. First, we discuss the output data layout which linearizes the data in a consistent way that is independent of the number of processors used to run the simulation and provides a convenient format for subsequent analyses of the data. Second, we discuss the flexible API interface that enables modelers to easily add variables to the output stream by specifying where in the GCRM code these variables are located and to flexibly configure the choice of outputs and distribution of data across files. The flexibility of the API is designed to allow model developers to add new data fields to the output as the model develops and new physics is added and also provides a mechanism for allowing users of the GCRM code itself to adjust the output frequency and the number of fields written depending on the needs of individual calculations. Third, we describe the mapping to the NetCDF data model with an emphasis on the grid description. Fourth, we describe our messaging algorithms and IO aggregation strategies that are used to achieve high bandwidth while simultaneously writing concurrently from many processors to shared files. We conclude with initial performance results.

Palmer, Bruce J.; Koontz, Annette S.; Schuchardt, Karen L.; Heikes, Ross P.; Randall, David A.

2011-11-26T23:59:59.000Z

232

Natural Gas Power  

Science Journals Connector (OSTI)

The purpose of a power plant is to generate electric power. Therefore, the key performance metric of an electric power generator is the net thermal efficiency, which is the ratio of the electric power measured...

Raub W. Smith; Dr. S. Can Glen

2012-01-01T23:59:59.000Z

233

Solar powered desalination system  

E-Print Network (OSTI)

1.18: Largest PV Power Plants32 TableTable 1.18: Largest PV Power Plants 19 Power (MW) LocationWorld Canada, Sarnia PV power plant Sarnia (Ontario) Italy,

Mateo, Tiffany Alisa

2011-01-01T23:59:59.000Z

234

PowerPoint Presentation  

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

Computer networks Local power network Local Power network Local Power network Bulk Power Grid Low-level security domain Medium-level security domain High-level security domain...

235

Water Power Program: Publications  

Energy Savers (EERE)

Water Power Program HOME ABOUT RESEARCH & DEVELOPMENT FINANCIAL OPPORTUNITIES INFORMATION RESOURCES NEWS EVENTS EERE Water Power Program Information Resources Publications...

236

Design and emplacement of an integrated lunar power system---issues and concerns  

SciTech Connect

Numerous issues regarding the construction and operation of a stationary lunar surface power system must be resolved within the coming decade before man's permanent presence on the lunar surface becomes a viable possibility. Some of the issues which need to be resolved during the early stages of this planning phase include: whether the electrical power system should be centralized, decentralized, or a combination of the two; whether power transmission should be ac or dc; what mix of power generating technology should be used (nuclear, isotope, photovoltaic, or regenerative fuel cells, for example); and determining the physical interface requirements between the power system hardware and the construction equipment to be used in emplacing this hardware on the lunar surface (from launch at the Kennedy Space Center---KSC---to erection and start-up on the moon). This paper preliminarily addresses these issues.

Sprouse, K.M.; Robin, J.E.; Metcalf, K.J. (Rocketdyne Division, Rockwell International Corporation, 6633 Canoga Avenue, Canoga Park, California (USA)); Cataldo, R. (NASA Lewis Research Center, Cleveland, Ohio (USA))

1991-01-10T23:59:59.000Z

237

Formation of submicron oxide widths on aluminum in the presence of keV electron beams and CO/sub 2/ or N/sub 2/O  

SciTech Connect

The purpose of this paper is to report the size of oxide islands or line widths that can be grown as smaller diameter electron beams are used for the oxidation. The implications of the potential lateral resolution available between oxide lines for electronic materials are discussed. The localize dioxide growth on thin Al films occurs in the presence of .5 to 10 keV electron beams and high vacuum level pressures of carbon dioxide or nitrous oxide. Auger electron spectroscopy shows saturation of the O (KLL) signal and depletion of the Al (LMM) signal after an exposure of 5000 l carbon dioxide with a 2 keV beam of 7 A/sq. cm. The oxide is spatially restricted to the beam impact region and is stable for long periods of time in vacuum. The most plausible mechanism for this oxide growth is dissociation of the carbon dioxide or the nitrous oxide by the electron beam in the region of impingement on or near the surface. Oxygen atoms thus formed can then react with the Al, and carbon monoxide or nitrogen desorbs.

Pitts, J.R.; Massopust, T.P.; Czanderna, A.W.; Kazmerski, L.L.

1986-03-01T23:59:59.000Z

238

Non-abelian Dark Matter Solutions for Galactic Gamma-ray Excess and Perseus 3.5 keV X-ray Line  

E-Print Network (OSTI)

We attempt to explain simultaneously the Galactic center gamma-ray excess and the 3.5 keV X-ray line from the Perseus cluster based on a class of non-abelian $SU(2)$ DM models, in which the dark matter and an excited state comprise a "dark" $SU(2)$ doublet. The non-abelian group kinetically mixes with the standard model gauge group via dimensions-5 operators. The dark matter particles annihilate into standard model fermions, followed by fragmentation and bremsstrahlung, and thus producing a continuous spectrum of gamma-rays. On the other hand, the dark matter particles can annihilate into a pair of excited states, each of which decays back into the dark matter particle and an X-ray photon, which has an energy equal to the mass difference between the dark matter and the excited state, which is set to be 3.5 keV. The large hierarchy between the required X-ray and $\\gamma$-ray annihilation cross-sections can be achieved by a very small kinetic mixing between the SM and dark sector, which effectively suppresses t...

Cheung, Kingman; Tsai, Yue-Lin Sming

2014-01-01T23:59:59.000Z

239

Heatpipe space power and propulsion systems  

SciTech Connect

Safe, reliable, low-mass space power and propulsion systems could have numerous civilian and military applications. This paper discusses two fission-powered concepts: the Heatpipe Power System (HPS) that provides power only, and the Heatpipe Bimodal System (HBS) that provides both power and thermal propulsion. Both concepts have 10 important features. First, only existing technology and recently tested fuel forms are used. Second, fuel can be removed whenever desired, greatly facilitating system fabrication and handling. Third, full electrically heated system testing is possible, with minimal operations required to replace the heaters with fuel and ready the system for launch. Fourth, the systems are passively subcritical during launch accidents. Fifth, a modular approach is used, and most technical issues can be resolved with inexpensive module tests. Sixth, bonds between dissimilar metals are minimized. Seventh, there are no single point failures during power mode operation. Eighth, fuel burnup rate is quite low to help ensure greater than 10-year system life. Ninth, there are no pumped coolant loops, and the systems can be shut down and restarted without coolant freeze/thaw concerns. Finally, a full ground nuclear test is not needed, and development costs will be low. The baseline HPS uses SNAP-10A-style thermoelectric power converters to produce 5 kWe at a system mass of about 500 kg. The unicouple thermoelectric converters have a hot shoe temperature of 1275 K and reject waste heat at 775 K. This type of thermoelectric converter has been used extensively by the space program, demonstrating an operational lifetime of decades. At higher thermal power, the same core can produce over 10 kWe using thermoelectric converters, and over 50 kWe using advanced power conversion systems.

Houts, M.G.; Poston, D.I.; Ranken, W.A.

1995-07-01T23:59:59.000Z

240

Angle-resolved photoemission spectroscopy (ARPES) studies of cuprate superconductors  

SciTech Connect

This dissertation is comprised of three different angle-resolved photoemission spectroscopy (ARPES) studies on cuprate superconductors. The first study compares the band structure from two different single layer cuprates Tl{sub 2}Ba{sub 2}CuO{sub 6+{delta}} (Tl2201) T{sub c,max} {approx} 95 K and (Bi{sub 1.35}Pb{sub 0.85})(Sr{sub 1.47}La{sub 0.38})CuO{sub 6+{delta}} (Bi2201) T{sub c,max} {approx} 35 K. The aim of the study was to provide some insight into the reasons why single layer cuprate's maximum transition temperatures are so different. The study found two major differences in the band structure. First, the Fermi surface segments close to ({pi},0) are more parallel in Tl2201 than in Bi2201. Second, the shadow band usually related to crystal structure is only present in Bi2201, but absent in higher T{sub c} Tl2201. The second study looks at the different ways of doping Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} (Bi2212) in-situ by only changing the post bake-out vacuum conditions and temperature. The aim of the study is to systematically look into the generally overlooked experimental conditions that change the doping of a cleaved sample in ultra high vacuum (UHV) experiments. The study found two major experimental facts. First, in inadequate UHV conditions the carrier concentration of Bi2212 increases with time, due to the absorption of oxygen from CO{sub 2}/CO molecules, prime contaminants present in UHV systems. Second, in a very clean UHV system at elevated temperatures (above about 200 K), the carrier concentration decreases due to the loss of oxygen atoms from the Bi-O layer. The final study probed the particle-hole symmetry of the pseudogap phase in high temperature superconducting cuprates by looking at the thermally excited bands above the Fermi level. The data showed a particle-hole symmetric pseudogap which symmetrically closes away from the nested FS before the node. The data is consistent with a charge density wave (CDW) origin of the pseudogap, similar to STM checkerboard patterns in the pseudogap state.

Palczewski, Ari Deibert

2010-12-15T23:59:59.000Z

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

The Dark Energy Survey: Prospects for Resolved Stellar Populations  

Science Journals Connector (OSTI)

Wide angle and deep surveys, regardless of their primary purpose, always sample a large number of stars in the Galaxy and in its satellite system. Here we make a forecast of the expected stellar sample resulting from the Dark Energy Survey (DES) and the perspectives that it will open for studies of Galactic structure and resolved stellar populations in general. An estimated 1.2 ? 108 stars will be sampled in DES grizY filters in the southern equatorial hemisphere. This roughly corresponds to 20% of all DES sources. Most of these stars belong to the stellar thick disk and halo of the Galaxy. DES will probe low-mass stellar and sub-stellar objects at depths from three to eight times larger than those in the Sloan Digital Sky Survey (SDSS). The faint end of the main sequence (MS) will be densely sampled beyond 10kpc. The slope of the low mass end of the stellar initial mass function (IMF) will be constrained to within a few hundredths of dex, even in the thick disk and halo. In the sub-stellar mass regime, the IMF slope will be potentially constrained to within dlog (m)/dlog m 0.1. About 3 ? 104 brown dwarf candidates and at least 7.6 ? 105 white dwarf candidates will be selected, the latter embedded into the thick disk and halo, for future follow-up. The stellar halo flattening will also be constrained to within a few percent. DES will probe the MS of new Milky Way satellites and halo clusters for distances out to 120kpc, therefore yielding stellar surface density contrasts 1.6-1.7 times larger than those attainable with SDSS. It will also allow detection of these objects in the far reaches of the stellar halo, substantially increasing the number and quality of probes to the Galactic potential. Combined with northern samples, such as the SDSS, the DES stellar sample will yield constraints on the structure and stellar populations of Galactic components in unprecedented detail. In particular, the combined sample from both hemispheres will allow detailed studies of halo and thick disk asymmetries and triaxiality.

Bruno M. Rossetto; Baslio X. Santiago; Lo Girardi; Julio I. B. Camargo; Eduardo Balbinot; Luiz N. da Costa; Brian Yanny; Marcio A. G. Maia; Martin Makler; Ricardo L. C. Ogando; Paulo S. Pellegrini; Beatriz Ramos; Fernando de Simoni; R. Armstrong; E. Bertin; S. Desai; N. Kuropatkin; H. Lin; J. J. Mohr; D. L. Tucker

2011-01-01T23:59:59.000Z

242

Resolving the Tension between CCS Deployment and Chinese Energy Security  

Science Journals Connector (OSTI)

The extra energy infrastructure requirement for CCS to meet peak electricity demand could be minimized through flexibility in operating CCS systems (e.g., by shutting down CO2 capture during supply shocks) while the experience curve could reduce the energy penalty in the long term. ... Given inevitable pressures to reduce carbon dioxide emissions and maintain economic growth, CCS offers an important means of decarbonizing the electricity system with the least disruption to the existing grid and energy markets. ... In so doing, it can help decarbonize not only the power sector, but also the transport system in turn if progress is made in commercializing hybrid electric or fully electric vehicles. ...

Xi Liang; David Reiner

2013-05-07T23:59:59.000Z

243

Resolving issues at the Department of Energy/Oak Ridge Operations Facilities  

SciTech Connect

Waste management, like many other issues, has experienced major milestones. In 1971, the Calvert Cliff's decision resulted in an entirely different approach to the consideration of environmental impact analysis in reactor siting. The accidents at Three Mile Island and Chernobyl have had profound effects on nuclear power plant design. The high-level waste repository program has had many similar experiences that have modified the course of events. The management of radioactive, hazardous chemical and mixed waste in all of the facilities of the Oak Ridge Operations (ORO) Office of the Department of Energy (DOE) took on an entirely different meaning in 1984. On April 13, 1984, Federal Judge Robert Taylor said that DOE should proceed 'with all deliberate speed' to bring the Y-12 plant into compliance with the Resource Conservation and Recovery Act and the Clean Water Act. This decision resulted from a suit brought by the Legal Environmental Assistance Foundation (LEAF) and grew out of a continuing revelation of mercury spills and other problems related to the Oak Ridge plants of DOE. In this same time frame, other events occurred in Oak Ridge that would set the stage for major changes, to provide the supporting environment that allowed a very different and successful approach to resolving waste management issues at the DOE/ORO Facilities. This is the origin of the Oak Ridge Model which was recently adopted as the DOE Model. The concept is to assure that all stakeholders in waste management decisions have the opportunity to be participants from the first step. A discussion of many of the elements that have contributed to the success of the Model follows.

Row, T.H.; Adams, W.D.

1988-01-01T23:59:59.000Z

244

A compact dusty disk around the Herbig Ae star HR 5999 resolved with VLTI / MIDI  

E-Print Network (OSTI)

We have used mid-infrared long-baseline interferometry with MIDI at the VLTI to resolve the circumstellar material around the Herbig Ae star HR 5999, providing the first direct measurement of its angular size, and to derive constraints on the spatial distribution of the dust. A set of ten spectrally dispersed (8-13 micron) interferometric measurements of HR 5999 was obtained. The characteristic size of the emission region depends on the projected baseline length and position angle, and it ranges between ~ 5-15 milliarcseconds (Gauss FWHM), corresponding to remarkably small physical sizes of ~ 1-3 AU. To derive constraints on the geometrical distribution of the dust, we compared our interferometric measurements to 2D, frequency-dependent radiation transfer simulations of circumstellar disks and envelopes. For disk models with radial power-law density distributions, the relatively weak but very extended emission from outer disk regions (>~ 3 AU) leads to model visibilities that are significantly lower than the observed visibilities, making these models inconsistent with the MIDI data. Disk models in which the density is truncated at outer radii of ~ 2-3 AU, on the other hand, provide good agreement with the data. A satisfactory fit to the observed MIDI visibilities of HR 5999 is found with a model of a geometrically thin disk that is truncated at 2.6 AU and seen under an inclination angle of 58 degr. Neither models of a geometrically thin disk seen nearly edge-on, nor models of spherical dust shells can achieve agreement between the observed and predicted visibilities. The reason why the disk is so compact remains unclear; we speculate that it has been truncated by a close binary companion.

Thomas Preibisch; Stefan Kraus; Thomas Driebe; Roy van Boekel; Gerd Weigelt

2006-07-21T23:59:59.000Z

245

High voltage power supplies for the neutral beam injectors of the stellarator TJ-II  

Science Journals Connector (OSTI)

Neutral beam injection will be available for the second experimental phase of TJ-II. Two injectors, set in co-counter configuration, will inject into the plasma two 40 keV H0 beams, each of up to 1 MW. The two high voltage power supplies to feed the acceleration grids of the injectors, described in this paper, are of the transformerrectifier type, taking their primary energy from a pulsed flywheel generator, and are coupled to the acceleration grids through a switching device. This environment effectively sets the main operation limits and protection requirements of the power supplies.

J Alonso; M Liniers; L Mart??nez Laso; E Jauregi; C Luc??a; F Valcrcel

2001-01-01T23:59:59.000Z

246

Westinghouse Pays $50,000 Civil Penalty to Resolve Light Bulb Efficiency  

NLE Websites -- All DOE Office Websites (Extended Search)

Westinghouse Pays $50,000 Civil Penalty to Resolve Light Bulb Westinghouse Pays $50,000 Civil Penalty to Resolve Light Bulb Efficiency Violations Westinghouse Pays $50,000 Civil Penalty to Resolve Light Bulb Efficiency Violations December 13, 2010 - 2:12pm Addthis The Department of Energy has successfully resolved the enforcement case against Westinghouse Lighting Corporation for failure to certify its light bulbs as compliant with DOE's federal efficiency requirements and for the sale of at least 29,000 general service fluorescent and medium base compact fluorescent lamps that used more energy than permitted by law. This case reflects DOE's renewed commitment to enforce the federal efficiency requirements systematically and fairly to level the competitive playing field and to ensure that American consumers are buying products that

247

U-220: Google Android DNS Resolver Randomization Flaw Lets Remote Users  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

0: Google Android DNS Resolver Randomization Flaw Lets Remote 0: Google Android DNS Resolver Randomization Flaw Lets Remote Users Poison the DNS Cache U-220: Google Android DNS Resolver Randomization Flaw Lets Remote Users Poison the DNS Cache July 25, 2012 - 7:00am Addthis PROBLEM: Google Android DNS Resolver Randomization Flaw Lets Remote Users Poison the DNS Cache PLATFORM: Version(s): 4.0.4 and prior versions ABSTRACT: A remote user can poison the DNS cache. reference LINKS: IBM Application Security Research Group SecurityTracker Alert ID: 1027291 Bugtraq ID: 523624 CVE-2012-2808 IMPACT ASSESSMENT: Medium Discussion: A vulnerability was reported in Google Android. The res_randomid() function, which bases a return value on the process ID and the current time, is called twice in quick succession. As a result, the effective

248

U-098: ISC BIND Deleted Domain Name Resolving Vulnerability | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

098: ISC BIND Deleted Domain Name Resolving Vulnerability 098: ISC BIND Deleted Domain Name Resolving Vulnerability U-098: ISC BIND Deleted Domain Name Resolving Vulnerability February 8, 2012 - 7:00am Addthis PROBLEM: A vulnerability has been reported in ISC BIND, which can be exploited by malicious people to bypass certain security restrictions. PLATFORM: ISC BIND 9.2.x ISC BIND 9.3.x ISC BIND 9.4.x ISC BIND 9.5.x ISC BIND 9.6.x ISC BIND 9.7.x ISC BIND 9.8.x ABSTRACT: The vulnerability is caused due to an error within the cache update policy. reference LINKS: Original Advisory Secunia Advisory SA47884 CVE-2012-1033 IMPACT ASSESSMENT: High Discussion: Researchers discovered a vulnerability affecting the large majority of popular DNS implementations which allows a malicious domain name to stay resolvable long after it has been removed from the upper level servers. The

249

U-039: ISC Update: BIND 9 Resolver crashes after logging an error in  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

9: ISC Update: BIND 9 Resolver crashes after logging an error 9: ISC Update: BIND 9 Resolver crashes after logging an error in query.c U-039: ISC Update: BIND 9 Resolver crashes after logging an error in query.c November 16, 2011 - 2:30pm Addthis PROBLEM: ISC Update: BIND 9 Resolver crashes after logging an error in query.c. PLATFORM: Versions of BIND, 9.4-ESV, 9.6-ESV, 9.7.x, 9.8.x ABSTRACT: A remote server can cause the target connected client to crash. Organizations across the Internet are reporting crashes interrupting service on BIND 9 nameservers performing recursive queries. Affected servers crash after logging an error in query.c with the following message: "INSIST(! dns_rdataset_isassociated(sigrdataset))" Multiple versions are reported as being affected, including all currently supported release versions of ISC BIND 9. ISC is actively investigating the root cause and

250

Resolving Cancer Heterogeneity by Single Cell Sequencing (7th Annual SFAF Meeting, 2012)  

ScienceCinema (OSTI)

Xun Xu on "Resolving Cancer Heterogeneity by Single Cell Sequencing" at the 2012 Sequencing, Finishing, Analysis in the Future Meeting held June 5-7, 2012 in Santa Fe, New Mexico.

Xu, Xun [BGI

2013-02-11T23:59:59.000Z

251

Time-, Energy-, and Phase-Resolved Second-Harmonic Generation at Semiconductor Interfaces  

Science Journals Connector (OSTI)

Time-, Energy-, and Phase-Resolved Second-Harmonic Generation at Semiconductor Interfaces ... We report the development of a femtosecond spectral interferometry technique for second-harmonic generation with time, energy, and phase resolution. ...

C. A. Nelson; J. Luo; A. K.-Y. Jen; R. B. Laghumavarapu; D. L. Huffaker; X.-Y. Zhu

2014-11-12T23:59:59.000Z

252

Proceedings of the Fourteenth International Conference on Time-Resolved Vibrational Spectroscopy (TRVS XIV)  

E-Print Network (OSTI)

Abstracts of presentations made at the Fourteenth International Conference on Time-Resolved Vibrational Spectroscopy (TRVS XIV) held May 9-14, 2009 in Meredith, New Hampshire. TRVS is a series of biennial conferences ...

Tokmakoff, Andrei

2011-08-31T23:59:59.000Z

253

Evaluation of Long-Term Cloud-Resolving Modeling with ARM Data  

NLE Websites -- All DOE Office Websites (Extended Search)

Evaluation of Long-Term Cloud-Resolving Modeling with ARM Data Zeng, Xiping NASAGSFC Tao, Wei-Kuo NASAGoddard Space Flight Center Zhang, Minghua State University of New York at...

254

The indexing ambiguity in serial femtosecond crystallography (SFX) resolved using an expectation maximization algorithm  

Science Journals Connector (OSTI)

An expectation maximization algorithm is implemented to resolve the indexing ambiguity which arises when merging data from many crystals in protein crystallography, especially in cases where partial reflections are recorded in serial femtosecond crystallography (SFX) at XFELs.

Liu, H.

2014-09-23T23:59:59.000Z

255

Temperature and TimeResolved XRay Powder Diffraction X14A EERE sponsored PRT beamline  

E-Print Network (OSTI)

Temperature and TimeResolved XRay Powder Diffraction X14A EERE sponsored PRT beamline Objective, in ambience or with gas flow Capabilities: X14A, EERE-sponsored PRT beamline · High photon flux: typically 9x

Ohta, Shigemi

256

Time-Resolved Infrared Spectral Photography Studies of Shock-Induced Chemistry in CS2  

Science Journals Connector (OSTI)

Experiments using time-resolved infrared spectral photography (TRISP) in the 68.5 m range to study explosively driven shocks in liquid CS2 are described. In this range, the temporal resolution of the TRISP syst...

A. M. Renlund; S. A. Sheffield; W. M. Trott

1986-01-01T23:59:59.000Z

257

Intensification of precipitation extremes with warming in a cloud resolving model  

E-Print Network (OSTI)

A cloud-resolving model is used to investigate the effect of warming on high percentiles of precipitation (precipitation extremes) in the idealized setting of radiative-convective equilibrium. While this idealized setting ...

Muller, Caroline

258

Time-resolved protein nanocrystallography using an X-ray free...  

NLE Websites -- All DOE Office Websites (Extended Search)

Time-resolved protein nanocrystallography using an X-ray free-electron laser Authors: Aquila, A., Hunter, M. S., Doak, R. B., Kirian, R. A., Fromme, P., White, T. A., Andreasson,...

259

A mobile UHV-system designed for femtosecond time, energy and spin resolved photoelectron spectroscopy  

Science Journals Connector (OSTI)

We report on the design and tests of a completely mobile photoemission end station for femtosecond time, energy and spin resolved magnetodynamics experiments. The setup is designed for the use at free-electron la...

Thomas Michlmayr; Andreas Fognini; Thomas Bhler

2013-06-01T23:59:59.000Z

260

Diurnal Cycle of Precipitation in the Tropics Simulated in a Global Cloud-Resolving Model  

Science Journals Connector (OSTI)

This study analyzes the diurnal cycle of precipitation simulated in a global cloud-resolving model (GCRM) named the Nonhydrostatic Icosahedral Atmospheric Model (NICAM). A 30-day integration of NICAM successfully simulates the precipitation ...

Tomonori Sato; Hiroaki Miura; Masaki Satoh; Yukari N. Takayabu; Yuqing Wang

2009-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

E-Print Network 3.0 - aur spatially resolved Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

(e.g. 16; Aur K4 Ib) and provides spatial information on the density... to constrain the wind acceleration. Spatially resolved spectra will continue to be a fruitful line of...

262

E-Print Network 3.0 - angle-resolved two-dimensional mapping...  

NLE Websites -- All DOE Office Websites (Extended Search)

Rettig... in an energy- and angle-resolved manner. To achieve this, a field free drift tube with an acceptance angle... of 22 is combined with two-dimensional position-sensitive...

263

3D Atmospheric Radiative Transfer for Cloud System-Resolving Models: Forward Modelling and Observations  

SciTech Connect

Utilization of cloud-resolving models and multi-dimensional radiative transfer models to investigate the importance of 3D radiation effects on the numerical simulation of cloud fields and their properties.

Howard Barker; Jason Cole

2012-05-17T23:59:59.000Z

264

U-038: BIND 9 Resolver crashes after logging an error in query.c |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

8: BIND 9 Resolver crashes after logging an error in query.c 8: BIND 9 Resolver crashes after logging an error in query.c U-038: BIND 9 Resolver crashes after logging an error in query.c November 16, 2011 - 8:37am Addthis PROBLEM: BIND 9 Resolver crashes after logging an error in query.c. PLATFORM: Multiple version of BIND 9. Specific versions under investigation ABSTRACT: A remote server can cause the target connected client to crash. Organizations across the Internet are reporting crashes interrupting service on BIND 9 nameservers performing recursive queries. Affected servers crash after logging an error in query.c with the following message: "INSIST(! dns_rdataset_isassociated(sigrdataset))" Multiple versions are reported as being affected, including all currently supported release versions of ISC BIND 9. ISC is actively investigating the root cause and

265

Heterogeneous mixtures of elliptical particles: Directly resolving local and global properties and responses  

Science Journals Connector (OSTI)

In our earlier papers, Prosperetti's seminal Physalis method for fluid flows was extended to directly resolve electric fields in finite-sized particles and to investigate accurately the mutual fluid-particle, particle-particle, and particle-boundary ... Keywords: Directly resolving particles, Discontinuous interface condition, Elliptical particles, Elongated rod-like particle, Force and torque on particles, Heterogeneous functional materials, Interactions, Local charge distribution, Orientation and anisotropy, Singularity in elliptic coordinates

Qianlong Liu; Kenneth L. Reifsnider

2013-02-01T23:59:59.000Z

266

High power density test of PXIE MEBT absorber prototype  

E-Print Network (OSTI)

One of the goals of the PXIE program at Fermilab is to demonstrate the capability to form an arbitrary bunch pattern from an initially CW 162.5 MHz H- bunch train coming out of an RFQ. The bunch-by-bunch selection will take place in the 2.1 MeV Medium Energy Beam Transport (MEBT) by directing the undesired bunches onto an absorber that needs to withstand a beam power of up to 21 kW, focused onto a spot with a ~2 mm rms radius. Two prototypes of the absorber were manufactured from molybdenum alloy TZM and tested with a 28 keV DC electron beam up to the peak surface power density required for PXIE, 17W/mm2. Temperatures and flow parameters were measured and compared to analysis. This paper describes the absorber prototypes and key testing results.

Shemyakin, A

2015-01-01T23:59:59.000Z

267

Resolving to Make Earth Day Last All Year | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Resolving to Make Earth Day Last All Year Resolving to Make Earth Day Last All Year Resolving to Make Earth Day Last All Year March 21, 2011 - 1:31pm Addthis Amy Foster Parish What was your New Year's resolution this year? Maybe you resolved to get back into the gym and finally lose those last pesky pounds. Maybe, like me, you resolved to finally break down and buy that new furnace. Or maybe you liked Chris' idea, and you resolved do whatever you could to save energy and money this year. When we talk about saving energy throughout the year, it's easy to forget that we're not just energy users when we're at home. Many of us spend a large part of our days at work, and the energy we use there is significant. According to ENERGY STAR®, the energy needed to support just one office worker for a day produces twice as much greenhouse gas emissions as that

268

Resolving to Make Earth Day Last All Year | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Resolving to Make Earth Day Last All Year Resolving to Make Earth Day Last All Year Resolving to Make Earth Day Last All Year March 21, 2011 - 4:49pm Addthis Amy Foster Parish What was your New Year's resolution this year? Maybe you resolved to get back into the gym and finally lose those last pesky pounds. Maybe, like me, you resolved to finally break down and buy that new furnace. Or maybe you liked Chris' idea, and you resolved do whatever you could to save energy and money this year. When we talk about saving energy throughout the year, it's easy to forget that we're not just energy users when we're at home. Many of us spend a large part of our days at work, and the energy we use there is significant. According to ENERGY STAR, the energy needed to support just one office worker for a day produces twice as much greenhouse gas emissions as that

269

Resolving to Make Earth Day Last All Year | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Resolving to Make Earth Day Last All Year Resolving to Make Earth Day Last All Year Resolving to Make Earth Day Last All Year March 21, 2011 - 1:31pm Addthis Amy Foster Parish What was your New Year's resolution this year? Maybe you resolved to get back into the gym and finally lose those last pesky pounds. Maybe, like me, you resolved to finally break down and buy that new furnace. Or maybe you liked Chris' idea, and you resolved do whatever you could to save energy and money this year. When we talk about saving energy throughout the year, it's easy to forget that we're not just energy users when we're at home. Many of us spend a large part of our days at work, and the energy we use there is significant. According to ENERGY STAR®, the energy needed to support just one office worker for a day produces twice as much greenhouse gas emissions as that

270

Energy and angular distribution of electrons ejected from argon by 5-keV to 1.5-MeV protons  

Science Journals Connector (OSTI)

Cross sections, differential in emission energy and angle, have been measured for the ejection of electrons in collisions of H+ with argon gas targets. Incident-proton energies studied were from 5 keV to 1.5 MeV and electron emission angles ranged from 10 to 160. Integration of the double-differential cross sections over emission angle and energy yield results in good agreement with direct measurement of total ionization cross sections. The electron distributions are compared to two plane-wave Born-approximation calculations, one using Hartree-Slater wave functions and the other using Hartree-Fock wave functions in the 3p-?d channel.

T. L. Criswell; L. H. Toburen; M. E. Rudd

1977-08-01T23:59:59.000Z

271

Charge transfer of 0.5-, 1.5-, and 5-keV protons with atomic oxygen: Absolute differential and integral cross sections  

Science Journals Connector (OSTI)

We report measurements of the absolute differential cross sections for charge-transfer scattering of 0.5-, 1.5-, and 5-keV protons by atomic oxygen at scattering angles between 0.01 and 2.6 in the laboratory frame. Absolute integral cross sections are also reported and compared with previously published total cross sections. The measurements were made using a flowing gas target, which consisted of a mixture of atomic and molecular oxygen produced by passage of O2 through a microwave discharge. The cross sections for atomic oxygen were obtained by appropriate subtraction of the signal due to molecular oxygen from that due to the mixture of O and O2. 1996 The American Physical Society.

B. G. Lindsay; D. R. Sieglaff; D. A. Schafer; C. L. Hakes; K. A. Smith; R. F. Stebbings

1996-01-01T23:59:59.000Z

272

Measurement of the x-ray mass attenuation coefficients of gold in the 38?50-keV energy range  

SciTech Connect

We used synchrotron x rays to measure the x-ray mass attenuation coefficients of gold at nine energies from 38 to 50 keV with accuracies of 0.1%. Our results are much more accurate than previous measurements in this energy range. A comparison of our measurements with calculated mass attenuation coefficients shows that our measurements fall almost exactly midway between the XCOM and FFAST calculated theoretical values, which differ from one another in this energy region by about 4%, even though the range includes no absorption edge. The consistency and accuracy of these measurements open the way to investigations of the x-ray attenuation in the region of the L absorption edge of gold.

Islam, M.T.; Rae, N.A.; Glover, J.L.; Barnea, Z.; de Jonge, M.D.; Tran, C.Q.; Wang, J.; Chantler, C.T. (Melbourne)

2010-11-12T23:59:59.000Z

273

A 3.55 keV line from $\\text{DM}\\rightarrow a \\rightarrow ?$: predictions for cool-core and non-cool-core clusters  

E-Print Network (OSTI)

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.

Joseph P. Conlon; Andrew J. Powell

2014-06-20T23:59:59.000Z

274

Calibration of X-ray detectors in the 8 to 115 keV energy range and their application to diagnostics on the National Ignition Facility  

SciTech Connect

The calibration of X-ray diagnostics is of paramount importance to the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory (LLNL). National Security Technologies LLC (NSTec) fills this need by providing a wide variety of calibration and diagnostic development services in support of the ongoing research efforts at NIF. The X-ray source in the High Energy X-ray lab utilizes induced fluorescence in a variety of metal foils to produce a beam of characteristic X rays ranging from 8 to 111 keV. Presented are the methods used for calibrating a High Purity Germanium detector, which has been absolutely calibrated using radioactive check sources, compared against a silicon photodiode calibrated at Physikalisch Technische Bundesanstalt (PTB). Also included is a limited presentation of results from the recent calibration of the upgraded Filter Fluorescer X ray Spectrometer.

J. J. Lee, M. J. Haugh, G. LaCaille, and P. Torres

2012-10-01T23:59:59.000Z

275

Differential elastic electron-scattering cross sections of pyrimidine in the energy range between 20 eV and 1 keV  

Science Journals Connector (OSTI)

Differential elastic electron-scattering cross sections of pyrimidine were absolutely measured for electron energies from 20 eV to 1 keV in the angular range between 5 and 135. The present results agree with the data of other groups within the experimental uncertainties at scattering angles below 75 while considerable differences among the data were found at higher scattering angles. The experimental values were compared to theoretical values calculated using the modified independent-atom model. The theoretical values reproduce the angular dependence of the experimental differential elastic scattering cross sections qualitatively well for electron energies above 60 eV. The sum of the integral elastic scattering cross sections, obtained by the integration of the differential elastic scattering cross sections, and ionization cross sections predicted by the binary-encounter-Bethe model agree with the previously measured total electron-scattering cross sections of pyrimidine to within 8%.

W. Y. Baek; M. U. Bug; H. Rabus

2014-06-24T23:59:59.000Z

276

Cross Sections for Electron Capture into the Excited Level n=6 of Hydrogen by 5- to 70-keV Protons in Mg Vapor and in Neon  

Science Journals Connector (OSTI)

An optical technique has been used to investigate electron capture into the excited level n=6 of hydrogen by 5- to 70-keV protons passing through magnesium vapor or neon. Photons from the Balmer H? transition which are emitted downstream of the target were analyzed with a grating spectrometer and counted. From these the population of the level n=6 and the cross section for electron capture into n=6 have been obtained. Cross-section estimates for ionization of the level n=6 collisions with Mg atoms are also presented. The electron-capture cross sections are consistent with n-3 extrapolations of electric-gap measurements for capture into higher quantum levels (n?9to15) reported by Il'in and co-workers, Futch and Moses, and Riviere. The results are compared with those of various theoretical models.

Klaus H. Berkner, William S. Cooper, III, Selig N. Kaplan, and Robert V. Pyle

1969-06-05T23:59:59.000Z

277

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)

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.

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

2014-05-06T23:59:59.000Z

278

Search for 14.4-KeV Solar Axions Emitted in the M1-Transition of Fe-57 Nuclei with CAST  

SciTech Connect

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{sub ay}|-1.19g{sub aN}{sup 0}+g{sub aN}{sup 3}| < 1.36 x 10{sup -16} GeV{sup -1} for ma < 0.03 eV at the 95% confidence level.

Andriamonje, S.; Aune, S.; /DAPNIA, Saclay; Autiero, D.; /CERN /Lyon, IPN; Barth, K.; /CERN; Belov, A.; /Moscow, INR; Beltran, B.; /Zaragoza U. /Queen's U., Kingston; Brauninger, H.; /Garching, Max Planck Inst., MPE; Carmona, J.M.; Cebrian, S.; /Zaragoza U.; Collar, J.I.; /Chicago U., EFI /Chicago U., KICP; Dafni, T.; /DAPNIA, Saclay /Darmstadt, Tech. Hochsch. /Zaragoza U.; Davenport, M.; /CERN; Di Lella, L.; /CERN /Pisa, Scuola Normale Superiore; Eleftheriadis, C.; /Aristotle U., Thessaloniki; Englhauser, J.; /Garching, Max Planck Inst., MPE; Fanourakis, G.; /Democritos Nucl. Res. Ctr.; Ferrer-Ribas, E.; /DAPNIA, Saclay; Fischer, H.; Franz, J.; /Freiburg U.; Friedrich, P.; /Garching, Max Planck Inst., MPE; Geralis, T.; /Democritos Nucl. Res. Ctr. /DAPNIA, Saclay /Moscow, INR /Zaragoza U. /British Columbia U. /Freiburg U. /Darmstadt, Tech. Hochsch. /DAPNIA, Saclay /Zaragoza U. /Frankfurt U. /Boskovic Inst., Zagreb /Freiburg U. /Munich, Max Planck Inst. /Boskovic Inst., Zagreb /Democritos Nucl. Res. Ctr. /Darmstadt, Tech. Hochsch. /Garching, Max Planck Inst., MPE /Boskovic Inst., Zagreb /CERN /Aristotle U., Thessaloniki /Boskovic Inst., Zagreb /Munich, Max Planck Inst. /Zaragoza U. /Chicago U., EFI /Chicago U., KICP /Stanford U., Phys. Dept. /SLAC /Zaragoza U. /CERN /DAPNIA, Saclay /CERN /Munich, Max Planck Inst. /Darmstadt, Tech. Hochsch. /Zaragoza U. /Aristotle U., Thessaloniki /Patras U. /Brookhaven /CERN /Munich, Max Planck Inst. /CERN /Chicago U., EFI /Chicago U., KICP /Zaragoza U. /Freiburg U. /CERN /CERN /Patras U.

2011-12-02T23:59:59.000Z

279

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

E-Print Network (OSTI)

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.

Tetsutaro Higaki; Naoya Kitajima; Fuminobu Takahashi

2014-08-18T23:59:59.000Z

280

Resolving piping analysis issues to minimize impact on installation activities during refueling outage at nuclear power plants  

SciTech Connect

While it is required to maintain piping code compliance for all phases of installation activities during outages at a nuclear plant, it is equally essential to reduce challenges to the installation personnel on how plant modification work should be performed. Plant betterment activities that incorporate proposed design changes are continually implemented during the outages. Supporting analysis are performed to back these activities for operable systems. The goal is to reduce engineering and craft man-hours and minimize outage time. This paper outlines how plant modification process can be streamlined to facilitate construction teams to do their tasks that involve safety related piping. In this manner, installation can proceed by minimizing on the spot analytical effort and reduce downtime to support the proposed modifications. Examples are provided that permit performance of installation work in any sequence. Piping and hangers including the branch lines are prequalified and determined operable. The system is up front analyzed for all possible scenarios. The modification instructions in the work packages is flexible enough to permit any possible installation sequence. The benefit to this approach is large enough in the sense that valuable outage time is not extended and on site analytical work is not required.

Bhavnani, D. [Public Service Electric and Gas Co., Hancocks Bridge, NJ (United States)

1996-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Time-resolved electron thermal conduction by probing of plasma formation in transparent solids with high power subpicosecond laser pulses  

SciTech Connect

This dissertation work includes a series of experimental measurements in a search for better understanding of high temperature (10{sup 4}-10{sup 6}K) and high density plasmas (10{sup 22}-10{sup 24}cm{sup {minus}3}) produced by irradiating a transparent solid target with high intensity (10{sup 13} - 10{sup 15}W/cm{sup 2}) and subpicosecond (10{sup {minus}12}-10{sup {minus}13}s) laser pulses. Experimentally, pump and probe schemes with both frontside (vacuum-plasma side) and backside (plasma-bulk material side) probes are used to excite and interrogate or probe the plasma evolution, thereby providing useful insights into the plasma formation mechanisms. A series of different experiments has been carried out so as to characterize plasma parameters and the importance of various nonlinear processes. Experimental evidence shows that electron thermal conduction is supersonic in a time scale of the first picosecond after laser irradiation, so fast that it was often left unresolved in the past. The experimental results from frontside probing demonstrate that upon irradiation with a strong (pump) laser pulse, a thin high temperature ({approximately}40eV) super-critical density ({approximately}10{sup 23}/cm{sup 3}) plasma layer is quickly formed at the target surface which in turn becomes strongly reflective and prevents further transmission of the remainder of the laser pulse. In the bulk region behind the surface, it is also found that a large sub-critical ({approximately}10{sup 18}/cm{sup 3}) plasma is produced by inverse Bremsstrahlung absorption and collisional ionization. The bulk underdense plasma is evidenced by large absorption of the backside probe light. A simple and analytical model, modified from the avalanche model, for plasma evolution in transparent materials is proposed to explain the experimental results. Elimination of the bulk plasma is then experimentally illustrated by using targets overcoated with highly absorptive films.

Vu, B.T.V.

1994-02-01T23:59:59.000Z

282

Dynamic power systems for power generation  

SciTech Connect

The characteristics of dynamic power systems have considerable potential value, especially for the space station. The base of technology that makes these dynamic power systems practical is reviewed. The following types of power-generating systems are examined herein: organic Rankine cycle, potassium Rankine cycle, Brayton cycle, and Stirling cycle.

English, R.E.

1984-04-01T23:59:59.000Z

283

An Algorithm for the Optimization of Insertion Devices to Increase Useful Flux and to Decrease Useless Radiation Power  

SciTech Connect

A continuous spectrum of synchrotron radiation in the hard x-ray region, 5-20 keV, is necessary for the special demand of users, but the high radiation power in that continuous spectrum adversely affects the design of optical components in the beam line. A compromise between photon flux and radiation power of insertion devices should hence be considered. An algorithm and code for spectrum optimization was hence developed using program Mathematica. A wiggler-like undulator with a continuous spectrum was investigated with this code. An optimization algorithm for continuous spectra in the energy range 5-20 keV is presented, and features of the wiggler-like undulator with a continuous spectrum are discussed herein.

Chen, S. D. [Department of of Electrophysics, National Chiao Tung University, Hsinchu 300, Taiwan (China); Hwang, C. S. [NSRRC, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan (China); Liang, K. S. [Department of of Electrophysics, National Chiao Tung University, Hsinchu 300, Taiwan (China); NSRRC, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan (China)

2010-06-23T23:59:59.000Z

284

Can solar power deliver?  

Science Journals Connector (OSTI)

...technologies, such as wind power, which often peaks...generators such as nuclear power, enabling it be rapidly...exceeded those for wind, nuclear and gas...Contributions from wind, solar and conventional sources to power generation on the...

2013-01-01T23:59:59.000Z

285

Power and the People  

Science Journals Connector (OSTI)

...Air Act for the electric power industry, are dealt with in a single...find no discussion of the Bonneville Power Administration, and only limited discussion...find no discussion of the Bonneville Power Administration, and only limited discussion...

M. Granger Morgan

1998-04-24T23:59:59.000Z

286

Green Power Network: Green Power Markets Overview  

NLE Websites -- All DOE Office Websites (Extended Search)

Green Markets Green Markets Search Search Help More Search Options Search Site Map News TVA Seeks 126 MW of Renewables in 2014 December 2013 More News More News Subscribe to E-Mail Update Subscribe to e-mail update Events EPA Webinar - The Power of Aggregated Purchasing: How to Green Your Electricity Supply & Save Money January 15, 2014 1:00-2:00 p.m. ET Previous Webinars More News Features Green Power Market Status Report (2011 Data) Featured Green Power Reports Green Pricing Green Power Marketing Green Certificates Carbon Offsets State Policies Overview The essence of green power marketing is to provide market-based choices for electricity consumers to purchase power from environmentally preferred sources. The term "green power" is used to define power generated from renewable energy sources, such as wind and solar power, geothermal, hydropower and various forms of biomass. Green power marketing has the potential to expand domestic markets for renewable energy technologies by fostering greater availability of renewable electric service options in retail markets. Although renewable energy development has traditionally been limited by cost considerations, customer choice allows consumer preferences for cleaner energy sources to be reflected in market transactions. In survey after survey, customers have expressed a preference and willingness to pay more, if necessary, for cleaner energy sources. You can find more information about purchase options on our "Buying Green Power" page.

287

PowerPoint Presentation  

Office of Environmental Management (EM)

Power Generation & Distribution-Technologies that generate on-site power or manage energy markets (e.g. PV, microgrid control systems) What are We Looking for?...

288

Fusion Power Associates Awards  

NLE Websites -- All DOE Office Websites (Extended Search)

Fusion Power Associates Awards Fusion Power Associates is "a non-profit, tax-exempt research and educational foundation, providing information on the status of fusion development...

289

BONNEVILLE POWER ADMINISTRATION  

NLE Websites -- All DOE Office Websites (Extended Search)

exceptions include: traffic signals, exit signs, kitchen equipment, network power management, power strips, showerheads, clothes washers, water heaters and ag stock...

290

Bonneville Power Administration  

NLE Websites -- All DOE Office Websites (Extended Search)

agreement (Agreement) between the BC Hydro and Power uthority (BCH) and the Bonneville Power Administration (BP A), jointly the Parties, which BA for accounting purposes is...

291

Portable Power Projects  

Energy.gov (U.S. Department of Energy (DOE))

DOE's Portable Power, Auxiliary Power Units, and R&D for Off-Road Fuel Cell Applications Research Projects Awarded April 2004

292

Southwestern Power Administration  

NLE Websites -- All DOE Office Websites (Extended Search)

of four Power Marketing Administrations in the United States, Southwestern markets hydroelectric power in Arkansas, Kansas, Louisiana, Missouri, Oklahoma, and Texas from 24 U.S....

293

BPA Power Services (PBL)  

NLE Websites -- All DOE Office Websites (Extended Search)

Power Rates Previous Power Rates Resource Program Average System Cost Methodology (ASCM) Wind Integration Tiered Rate Methodology Supplemental Rate Case Tiered Rate Methodology...

294

HOUSEHOLD SOLAR POWER SYSTEM.  

E-Print Network (OSTI)

?? Photovoltaic power has become one of the most popular research area in new energy field. In this report, the case of household solar power (more)

Jiang, He

2014-01-01T23:59:59.000Z

295

Solar powered desalination system  

E-Print Network (OSTI)

As a clean energy source, solar power is inexhaustible,renewables for energy sources, including solar power. Also,Requirements Energy Source Natural Gas Nuclear Solar Wind

Mateo, Tiffany Alisa

2011-01-01T23:59:59.000Z

296

Assessment of Combined Heat and Power Premium Power Applications...  

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

Assessment of Combined Heat and Power Premium Power Applications in California, September 2008 Assessment of Combined Heat and Power Premium Power Applications in California,...

297

Georgia Power Company (GPC), Oglethorpe Power Corporation (OPC...  

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

Georgia Power Company (GPC), Oglethorpe Power Corporation (OPC), Municipal Electric Authority of Georgia (MEAG) Georgia Power Company (GPC), Oglethorpe Power Corporation (OPC),...

298

Power network analysis and optimization  

E-Print Network (OSTI)

hierarchical power distribution design with a power tree [T. Roy, Power distribution system design methodology andChen, 3D Power Distribution Network Co-design for Nanascale

Zhang, Wanping

2009-01-01T23:59:59.000Z

299

Power Purchase Agreements  

Energy.gov (U.S. Department of Energy (DOE))

Presentation covers the power purchase agreements taken from the FEMP Alternative Finance Options (AFO) webinar.

300

TVA chooses nuclear power  

Science Journals Connector (OSTI)

TVA chooses nuclear power ... In giving the nod to a nuclear (over a coal) power generating station 10 days ago, TVA probably gave nuclear power its biggest boost to date. ... The $247 million nuclear power planta dual boiling-water reactor unit with a total capacity of 2.2 million kw(e).will ...

1966-06-27T23:59:59.000Z

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Offshore Wind Power USA  

Energy.gov (U.S. Department of Energy (DOE))

The Offshore Wind Power USA conference provides the latest offshore wind market updates and forecasts.

302

Power blackouts likely  

Science Journals Connector (OSTI)

... generating stations switch off if they cannot transmit their power. As power stations and transmission substations were knocked out, power was shifted to lines further down the network, causing them ... a map of the United States containing more than 14,000 generating, transmission and distribution substations, and over 19,000 connecting power lines. ...

Philip Ball

2004-01-20T23:59:59.000Z

303

Can solar power deliver?  

Science Journals Connector (OSTI)

...Articles 1002 117 Discussion Meeting Issue Can solar power deliver? organized and edited by...S. Roberto Amendolia and Can Li Can solar power deliver? Jenny Nelson 1 2 Christopher...of 15 to a Discussion Meeting Issue Can solar power deliver? . Solar power represents...

2013-01-01T23:59:59.000Z

304

Power Series Introduction  

E-Print Network (OSTI)

Power Series 16.4 Introduction In this section we consider power series. These are examples of infinite series where each term contains a variable, x, raised to a positive integer power. We use the ratio test to obtain the radius of convergence R, of the power series and state the important result

Vickers, James

305

High-Power Negative Ion Sources for Neutral Beam Injectors in Large Helical Device  

SciTech Connect

Large-scaled hydrogen negative-ion sources, in which cesium is introduced in the source plasma, have been developed for neutral beam injectors in Large Helical Device, and their operational characteristics are reviewed. For high-efficient negative ion production, configuration of the magnetic filter field and the cusp magnetic field was optimized, resulting in a high arc efficiency for the negative ion production of 0.23A/kW. With use of a multi-slotted grounded grid, the gas pressure in the acceleration gap is lowered, leading to reduction of the heat load of the grounded grid. As a result, the voltage holding ability is much improved, and the rated energy of 180 keV is achieved in a short conditioning period of 4 days. The injection power is increased linearly to the 5/2 power of the beam energy and reached 5.7MW with an energy of 184keV, which exceeds the specified value of 180keV-5MW. Beam uniformity has been improved with an individual control of the local arc discharge by adjusting 12-divided output voltages of the arc and filament power supplies. The injection duration has been extended to 120sec with a reduced power. Spectroscopic measurement has been carried out for the source plasma. The cesium-ion line is observed in the plasma volume, and, however, the negative ion production is not influenced by the cesium ions in the plasma because the negative ions should be produced on the cesium-covered plasma grid surface.

Takeiri, Y.; Kaneko, O.; Tsumori, K.; Ikeda, K.; Nagaoka, K.; Osakabe, M.; Oka, Y.; Asano, E.; Kondo, T.; Sato, M.; Shibuya, M.; Komada, S. [National Institute for Fusion Science, Toki 509-5292 (Japan); Fantz, U. [Max-Planck-Institut fuer Plasmaphysik, Boltzmannstr. 2, Garching (Germany)

2007-08-10T23:59:59.000Z

306

Geothermal Power Generation  

SciTech Connect

The report provides an overview of the renewed market interest in using geothermal for power generation including a concise look at what's driving interest in geothermal power generation, the current status of geothermal power generation, and plans for the future. Topics covered in the report include: an overview of geothermal power generation including its history, the current market environment, and its future prospects; an analysis of the key business factors that are driving renewed interest in geothermal power generation; an analysis of the challenges that are hindering the implementation of geothermal power generation projects; a description of geothermal power generation technologies; a review of the economic drivers of geothermal power generation project success; profiles of the major geothermal power producing countries; and, profiles of the major geothermal power project developers.

NONE

2007-11-15T23:59:59.000Z

307

Silicon Valley Power and Oklahoma Municipal Power Authority Win 2014 Public Power Wind Awards  

Energy.gov (U.S. Department of Energy (DOE))

The Energy Department and the American Public Power Association named Oklahoma Municipal Power Authority and Silicon Valley Power as the winners of the 2014 Public Power Wind Awards.

308

DOE Resolves Nearly One-Third of 27 Recently Filed Civil Penalty Cases |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

One-Third of 27 Recently Filed Civil Penalty One-Third of 27 Recently Filed Civil Penalty Cases DOE Resolves Nearly One-Third of 27 Recently Filed Civil Penalty Cases September 23, 2010 - 5:14pm Addthis The Department has successfully resolved eight of the 27 enforcement cases brought just two weeks ago against companies for selling products without properly certifying their compliance with the Department's conservation standards. The swift resolution of nearly one-third of these cases reflects the central goal of the Department's enforcement effort - compliance with all aspects of the Department's regulations to ensure that consumers have the information they need to buy energy and cost saving products. Each of the eight companies responded promptly to the Department's notice, cooperated fully to resolve all issues, and committed to certifying

309

Cloud-Resolving Model Simulation and Mosaic Treatment of Subgrid Cloud-Radiation Interaction  

NLE Websites -- All DOE Office Websites (Extended Search)

Cloud-Resolving Model Simulation and Mosaic Treatment Cloud-Resolving Model Simulation and Mosaic Treatment of Subgrid Cloud-Radiation Interaction X. Wu Department of Geological and Atmospheric Sciences Iowa State University Ames, Iowa X.-Z. Liang Illinois State Water Survey University of Illinois at Urbana-Champaign Champaign, Illinois Introduction Improving the representation of cloud-radiation interaction is a major challenge for the global climate simulation. The development of cloud-resolving models (CRMs) and the extensive Atmospheric Radiation Measurements (ARMs) provide a unique opportunity for shading some lights on this problem. Current general circulation models (GCMs) predict cloud cover fractions and hydrometeor concentra- tions only in individual model layers, where clouds are assumed to be horizontally homogeneous in a

310

Air-Con Agrees to Pay Civil Penalty to Resolve Enforcement Action |  

NLE Websites -- All DOE Office Websites (Extended Search)

Air-Con Agrees to Pay Civil Penalty to Resolve Enforcement Action Air-Con Agrees to Pay Civil Penalty to Resolve Enforcement Action Air-Con Agrees to Pay Civil Penalty to Resolve Enforcement Action November 23, 2010 - 6:34pm Addthis The Department of Energy has settled the civil penalty action it initiated against Air-Con International for Air-Con's sale of air conditioners in the United States that used more energy than allowed by federal law. On September 20, 2010, based on Air-Con's responses to a DOE subpoena, DOE ordered Air-Con to stop selling noncompliant air conditioners in the United States and proposed civil penalties for the noncompliant units sold by the company. Air-Con promptly ceased U.S. sales of the noncompliant models. In the settlement announced today, DOE agreed to accept a civil penalty of $10,000, after considering factors set forth in DOE's penalty guidance,

311

Resolve to Save Energy in the New Year | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Resolve to Save Energy in the New Year Resolve to Save Energy in the New Year Resolve to Save Energy in the New Year December 30, 2008 - 4:00am Addthis Allison Casey Senior Communicator, NREL What are your New Year's Resolutions? It's that time again to make your list and decide how January 1st will be the day you start your new and improved life! [end the infomercial voiceover] In all seriousness, it seems that most New Year's Resolutions are abandoned sometime around mid-February, in spite of our best intentions. But it doesn't have to be that way. I know and you know that your resolutions are important, as shown by USA.gov's list of popular New Year's resolutions. My guess is that one of the most popular resolutions this year will be to save money. If saving money is one of your resolutions, have you considered

312

Air-Con Agrees to Pay Civil Penalty to Resolve Enforcement Action |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Air-Con Agrees to Pay Civil Penalty to Resolve Enforcement Action Air-Con Agrees to Pay Civil Penalty to Resolve Enforcement Action Air-Con Agrees to Pay Civil Penalty to Resolve Enforcement Action November 23, 2010 - 6:34pm Addthis The Department of Energy has settled the civil penalty action it initiated against Air-Con International for Air-Con's sale of air conditioners in the United States that used more energy than allowed by federal law. On September 20, 2010, based on Air-Con's responses to a DOE subpoena, DOE ordered Air-Con to stop selling noncompliant air conditioners in the United States and proposed civil penalties for the noncompliant units sold by the company. Air-Con promptly ceased U.S. sales of the noncompliant models. In the settlement announced today, DOE agreed to accept a civil penalty of $10,000, after considering factors set forth in DOE's penalty guidance,

313

Resolve to Save Energy in the New Year | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Resolve to Save Energy in the New Year Resolve to Save Energy in the New Year Resolve to Save Energy in the New Year December 30, 2008 - 4:00am Addthis Allison Casey Senior Communicator, NREL What are your New Year's Resolutions? It's that time again to make your list and decide how January 1st will be the day you start your new and improved life! [end the infomercial voiceover] In all seriousness, it seems that most New Year's Resolutions are abandoned sometime around mid-February, in spite of our best intentions. But it doesn't have to be that way. I know and you know that your resolutions are important, as shown by USA.gov's list of popular New Year's resolutions. My guess is that one of the most popular resolutions this year will be to save money. If saving money is one of your resolutions, have you considered

314

Power Reactor Progress  

Science Journals Connector (OSTI)

Argonne kicks off EBWR; Allis-Chalmers plans power reactor using both nuclear and conventional fuels ... NUCLEAR POWER took two giant steps last week. ... Just as the first nuclear power system in the U. S. designed and built solely for the generation of electric power went into full operation at Argonne, Allis-Chalmers came up with a new twist in power reactorsa controlled recirculation boiling reactor (CRBR) using both nuclear and conventional fuels (C&EN, Feb. 18, page 7). ...

1957-02-25T23:59:59.000Z

315

Monte Carlo simulation of nitrogen dissociation based on state-resolved cross sections  

SciTech Connect

State-resolved analyses of N + N{sub 2} are performed using the direct simulation Monte Carlo (DSMC) method. In describing the elastic collisions by a state-resolved method, a state-specific total cross section is proposed. The state-resolved method is constructed from the state-specific total cross section and the rovibrational state-to-state transition cross sections for bound-bound and bound-free transitions taken from a NASA database. This approach makes it possible to analyze the rotational-to-translational, vibrational-to-translational, and rotational-to-vibrational energy transfers and the chemical reactions without relying on macroscopic properties and phenomenological models. In nonequilibrium heat bath calculations, the results of present state-resolved DSMC calculations are validated with those of the master equation calculations and the existing shock-tube experimental data for bound-bound and bound-free transitions. In various equilibrium and nonequilibrium heat bath conditions and 2D cylindrical flows, the DSMC calculations by the state-resolved method are compared with those obtained with previous phenomenological DSMC models. In these previous DSMC models, the variable soft sphere, phenomenological Larsen-Borgnakke, quantum kinetic, and total collision energy models are considered. From these studies, it is concluded that the state-resolved method can accurately describe the rotational-to-translational, vibrational-to-translational, and rotational-to-vibrational transfers and quasi-steady state of rotational and vibrational energies in nonequilibrium chemical reactions by state-to-state kinetics.

Kim, Jae Gang, E-mail: jaegkim@umich.edu; Boyd, Iain D., E-mail: iainboyd@umich.edu [Department of Aerospace Engineering, University of Michigan, 1320 Beal Avenue, Ann Arbor, Michigan 48109-2140 (United States)

2014-01-15T23:59:59.000Z

316

Nuclear power economics and prospects in the USA  

Science Journals Connector (OSTI)

This paper addresses three questions concerning the economics of and prospects for nuclear power in the USA: (1) What is the long-term economic future of nuclear energy? (2) Is the inability to resolve the nuclear waste issue a factor that will limit new nuclear plant development? (3) Are the new designs for nuclear plants an advance over current designs? With respect to the first question, we find that the long-term economic future of nuclear energy is uncertain, at best. Despite recent interest in a 'nuclear renaissance', objective, rigorous studies have concluded that at present, new nuclear power plants are not economically competitive with coal or natural gas for electricity generation and will not be for the foreseeable future. With respect to the second question, we find that the inability to resolve the nuclear waste issue will likely limit new nuclear plant development. Nuclear waste disposal poses a serious, seemingly intractable problem for the future of nuclear power and the waste issue could be a showstopper for new nuclear plants. With respect to the third question, the new designs for nuclear plants are an advance over current designs, but only marginally. Thus, while some new nuclear power plants will likely be built in the USA over the next two decades, a major 'nuclear renaissance' is unlikely.

Roger H. Bezdek

2009-01-01T23:59:59.000Z

317

Photon-number-resolved heralded-photon source for improved quantum key distribution  

SciTech Connect

We have suppressed multiphoton probability of a heralded-photon source, which is vital for quantum key distribution with a higher secure key generation rate. It is accomplished by utilizing a practical photon-number-resolving detector for triggering resulting in an important step for improved practical quantum key distribution. Heralded-photon source and a practical photon-number-resolving detector capable of real-time processed multiphoton rejection are stably operable at room temperature and enable us to generate a secure key at a distance as long as an ideal single photon source is used.

Horikiri, Tomoyuki [Department of Physics, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033 (Japan); Institute of Laser Science and Department of Applied Physics and Chemistry, University of Telecommunications, Chofu-ga-oka 1-5-1, Chofu, Tokyo 182-8585 (Japan); Takeno, Yuishi [Department of Physics, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033 (Japan); Yabushita, Atsushi [Department of Electrophysics, Faculty of Science, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu, Taiwan 300 (China); Kobayashi, Takayoshi [ICORP, JST, 4-1-8 Honcho, Kawaguchi, Saitama (Japan); Institute of Laser Science and Department of Applied Physics and Chemistry, University of Telecommunications, Chofu-ga-oka 1-5-1, Chofu, Tokyo 182-8585 (Japan); Department of Electrophysics, Faculty of Science, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu, Taiwan 300 (China); Institute of Laser Engineering, Osaka University, Yamadagaoka 2-6, Suita, Osaka 565-0871 (Japan)

2007-07-15T23:59:59.000Z

318

Modelling the effect of nuclear motion on the attosecond time-resolved photoelectron spectra of ethylene  

E-Print Network (OSTI)

Using time dependent density functional theory (TDDFT) we examine the energy, angular and time-resolved photoelectron spectra (TRPES) of ethylene in a pump-probe setup. To simulate TRPES we expose ethylene to an ultraviolet (UV) femtosecond pump pulse, followed by a time delayed extreme ultraviolet (XUV) probe pulse. Studying the photoemission spectra as a function of this delay provides us direct access to the dynamic evolution of the molecule's electronic levels. Further, by including the nuclei's motion, we provide direct chemical insight into the chemical reactivity of ethylene. These results show how angular and energy resolved TRPES could be used to directly probe electron and nucleus dynamics in molecules.

Crawford-Uranga, Alison; Mowbray, Duncan John; Kurth, Stefan; Rubio, Angel

2014-01-01T23:59:59.000Z

319

A new study of the $^{22}$Ne(p,$?$)$^{23}$Na reaction deep underground: Feasibility, setup, and first observation of the 186 keV resonance  

E-Print Network (OSTI)

The $^{22}$Ne(p,$\\gamma$)$^{23}$Na reaction takes part in the neon-sodium cycle of hydrogen burning. This cycle is active in asymptotic giant branch stars as well as in novae and contributes to the nucleosythesis of neon and sodium isotopes. In order to reduce the uncertainties in the predicted nucleosynthesis yields, new experimental efforts to measure the $^{22}$Ne(p,$\\gamma$)$^{23}$Na cross section directly at the astrophysically relevant energies are needed. In the present work, a feasibility study for a $^{22}$Ne(p,$\\gamma$)$^{23}$Na experiment at the Laboratory for Underground Nuclear Astrophysics (LUNA) 400\\,kV accelerator deep underground in the Gran Sasso laboratory, Italy, is reported. The ion beam induced $\\gamma$-ray background has been studied. The feasibility study led to the first observation of the $E_{\\rm p}$ = 186\\,keV resonance in a direct experiment. An experimental lower limit of 0.12\\,$\\times$\\,10$^{-6}$\\,eV has been obtained for the resonance strength. Informed by the feasibility study, a dedicated experimental setup for the $^{22}$Ne(p,$\\gamma$)$^{23}$Na experiment has been developed. The new setup has been characterized by a study of the temperature and pressure profiles. The beam heating effect that reduces the effective neon gas density due to the heating by the incident proton beam has been studied using the resonance scan technique, and the size of this effect has been determined for a neon gas target.

F. Cavanna; R. Depalo; M. -L. Menzel; M. Aliotta; M. Anders; D. Bemmerer; C. Broggini; C. G. Bruno; A. Caciolli; P. Corvisiero; T. Davinson; A. di Leva; Z. Elekes; F. Ferraro; A. Formicola; Zs. Flp; G. Gervino; A. Guglielmetti; C. Gustavino; Gy. Gyrky; G. Imbriani; M. Junker; R. Menegazzo; P. Prati; C. Rossi Alvarez; D. A. Scott; E. Somorjai; O. Straniero; F. Strieder; T. Szcs; D. Trezzi

2014-11-25T23:59:59.000Z

320

Nonthermal Two Component Dark Matter Model for Fermi-LAT $\\gamma$-ray excess and 3.55 keV X-ray Line  

E-Print Network (OSTI)

A two component model of nonthermal dark matter is formulated to simultaneously explain the Fermi-LAT results indicating a $\\gamma$-ray excess observed from our Galactic Centre in the 1-3 GeV energy range and the detection of an X-ray line at 3.55 keV from extra galactic sources. Two additional Standard Model singlet scalar fields $S_2$ and $S_3$ are introduced. These fields couple among themselves and with the Standard Model Higgs doublet $H$. The interaction terms among the scalar fields, namely $H$, $S_2$ and $S_3$, are constrained by the application of a discrete $\\mathbb{Z}_2\\times \\mathbb{Z}^\\prime_2$ symmetry which breaks softly to a remnant $\\mathbb{Z}^{\\prime \\prime}_2$ symmetry. This residual discrete symmetry is then spontaneously broken through an MeV order vacuum expectation value $u$ of the singlet scalar field $S_3$. The resultant physical scalar spectrum has the Standard Model like Higgs as $\\chi_{{}_{{}_1}}$ with $M_{\\chi_{{}_{{}_1}}}\\sim 125$ GeV, a moderately heavy scalar $\\chi_{{}_{{}_2}}$...

Biswas, Anirban; Roy, Probir

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

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

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.

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

1995-12-31T23:59:59.000Z

322

Angular distribution of thick-target bremsstrahlung produced by electrons with initial energies ranging from 10 to 20 keV incident on Ag  

Science Journals Connector (OSTI)

Experimental results are presented comparing the intensities of the bremsstrahlung produced by electrons with initial energies ranging from 10 to 20 keV incident on a thick Ag target, measured at forward angles in the range of 0 to 55. When the data are corrected for attenuation due to photon absorption within the target, the results indicate that the detected radiation is distributed anisotropically only at photon energies k that are approximately equal to the initial energy of the incident electrons E0. The results of our experiments suggest that, as k/E0 ? 0, the detected radiation essentially becomes isotropic due primarily to the scattering of electrons within the target. A comparison to the theory of Kissel et al. [At. Data Nucl. Data Tables 28, 381 (1983)] suggests that the angular distribution of bremsstrahlung emitted by electrons incident on thick targets is similar to the angular distribution of bremsstrahlung emitted by electrons incident on free-atom targets only when k/E0 ? 1. The experimental data also are in approximate agreement with the angular distribution predictions of the Monte Carlo program penelope.

D. Gonzales; B. Cavness; S. Williams

2011-11-29T23:59:59.000Z

323

Learning to Apply Metrology Principles to the Measurement of X-ray Intensities in the 500 eV to 110 keV Energy Range  

SciTech Connect

National Security Technologies, LLC (NSTec), Livermore Operations, has two optical radiation calibration laboratories accredited by the National Voluntary Laboratories Accreditation Program (NVLAP) which is the accrediting body of the National Institute of Standards and Technology (NIST), and is now working towards accreditation for its X-ray laboratories. NSTec operates several laboratories with X-ray sources that generate X-rays in the energy range from 50 eV to 115 keV. These X-ray sources are used to characterize and calibrate diagnostics and diagnostic components used by the various national laboratories, particularly for plasma analysis on the Lawrence Livermore National Laboratory (LLNL) National Ignition Facility (NIF). Because X-ray photon flux measurement methods that can be accredited, i.e., traceable to NIST, have not been developed for sources operating in these energy ranges, NSTec, NIST, and the National Voluntary Accreditation Program (NVLAP) together have defined a path toward the development and validation of accredited metrology methods for X-ray energies. The methodology developed for the high energy X-ray (HEX) Laboratory was NSTecs starting point for X-ray metrology accreditation and will be the basis for the accredited processes in the other X-ray laboratories. This paper will serve as a teaching tool, by way of this example using the NSTec X-ray sources, for the process and methods used in developing an accredited traceable metrology.

Haugh, M. J.; Pond, T.; Silbernagel, C.; Torres, P.; Marlett, K.; Goldin, F.; Cyr, S.

2011-02-08T23:59:59.000Z

324

Determination of the absolute K through O conversion coefficients of the 80-keV M4 transition in Irm193  

Science Journals Connector (OSTI)

We produced carrier-free, nearly isotopically pure Irm193 from thermal-neutron irradiation of Os192. From studies of the conversion-electron spectrum, the photon spectrum, and the absolute counting rates, we determined the absolute K, L1, L2, L3, M1, M3, M5, N, and O+P conversion coefficients for the first time. With possibly one exception, these values agree closely with theoretical calculations. The value for the energy of the unconverted gamma ray was found to be 80.220.02 keV. The half-life for Irm193 determined by absolute electron counting in a proportional counter of 100% counting efficiency (4??) was found to be 10.530.04 d. We have determined the L1 subshell fluorescence yield, ?1, to be 0.1200.003 for iridium. Based upon our measurements of initial and final L subshell vacancies together with a best-fit literature value for ?2, we have found a plausible value for the Coster-Kronig coefficient f12 to be 0.0910.011.

M. Lindner; R. Gunnink; R. J. Nagle

1987-09-01T23:59:59.000Z

325

First observation of {alpha} decay of {sup 190}Pt to the first excited level (E{sub exc}=137.2 keV) of {sup 186}Os  

SciTech Connect

The {alpha} decays of naturally occurring platinum isotopes, which are accompanied by the emission of {gamma} quanta, have been searched for deep underground (3600 m water equivalent) at the Gran Sasso National Laboratories of the INFN (Italy). A sample of Pt with a mass of 42.5 g and a natural isotopic composition has been measured with a low background HP Ge detector (468 cm{sup 3}) during 1815 h. The {alpha} decay of {sup 190}Pt to the first excited level of {sup 186}Os (J{sup {pi}}=2{sup +}, E{sub exc}=137.2 keV) has been observed for the first time, with the half-life determined as T{sub 1/2}=2.6{sub -0.3}{sup +0.4}(stat.){+-}0.6(syst.)x10{sup 14} yr. The T{sub 1/2} limits for the {alpha} decays of other Pt isotopes have been determined at the level of T{sub 1/2}{approx_equal}10{sup 16}-10{sup 20} yr. These limits have been set for the first time or they are better than those known from earlier experiments.

Belli, P. [INFN, Sezione di Roma Tor Vergata, I-00133 Rome (Italy); Bernabei, R. [INFN, Sezione di Roma Tor Vergata, I-00133 Rome (Italy); Dipartimento di Fisica, Universita di Roma Tor Vergata, I-00133 Rome (Italy); Cappella, F. [INFN, Sezione di Roma La Sapienza, I-00185 Rome (Italy); Dipartimento di Fisica, Universita di Roma La Sapienza, I-00185 Rome (Italy); Cerulli, R.; Laubenstein, M.; Nisi, S. [INFN, Laboratori Nazionali del Gran Sasso, 67010 Assergi (AQ) (Italy); Danevich, F. A.; Nagorny, S. S.; Polischuk, O. G.; Tretyak, V. I. [Institute for Nuclear Research, MSP 03680 Kyiv (Ukraine); Incicchitti, A. [INFN, Sezione di Roma La Sapienza, I-00185 Rome (Italy)

2011-03-15T23:59:59.000Z

326

Green Power Network: Green Power Policies  

NLE Websites -- All DOE Office Websites (Extended Search)

Green Power Marketing Green Certificates Carbon Offsets State Policies govern_purch Community Choice Aggregation Disclosure Policies Green Power Policies Net Metering Policies Green Power Policies A number of state and local governments have policies in place that encourage the development of green power markets. Government green power purchasing mandates or goals have been established by the federal government, as well as state and local governments to procure renewable energy for the electricity used by government facilities or operations. Community choice aggregation allows communities to determine their electricity generation sources by aggregating the community load and purchasing electricity from an alternate electricity supplier while still receiving transmission and distribution service from their existing provider.

327

Time-Resolved Measurements of Near-Infrared Pulse Induced Ultrafast Optical Modulation of Quantum Cascade Lasers  

Science Journals Connector (OSTI)

We temporally resolve ultrafast modulation of quantum cascade lasers (QCLs) using a near-infrared pump mid-infrared probe technique. We compare interband and intersubband transition...

Cai, Hong; Liu, Sheng; Lalanne, Elaine; Guo, Dingkai; Chen, Xing; Wang, Xiaojun; Choa, Fow-Sen; Johnson, Anthony M

328

Eddy-resolving Lidar Measurements and Numerical Simulations of the Convective Internal Boundary Layer  

E-Print Network (OSTI)

in speed. The vertical gradient of wind-speed decreases offshore because of strong vertical mixing caused correlation functions and winds derived from horizontal (PPI) and vertical (RHI) scans of the VIL during Lake.4 0.5 0.6 0.7 DOWNSTREAM WIND SPEEDS FROM RHI SCANS ON 13 JANUARY 1998 SPATIALLY RESOLVED 5-m WINDS

Eloranta, Edwin W.

329

UNIVERSITY OF CALIFORNIA, Effects of Vertically-Resolved Solar Heating, Snow Aging, and Black  

E-Print Network (OSTI)

UNIVERSITY OF CALIFORNIA, IRVINE Effects of Vertically-Resolved Solar Heating, Snow Aging formats: Committee Chair University of California, Irvine 2007 ii #12;To my parents, John and Cindy. iii, albedo, snow grain size, and absorbing impurities. . 8 2.1 Solar absorption profiles prescribed by CLM

Zender, Charles

330

Scanning photoelectron microscope for nanoscale three-dimensional spatial-resolved electron spectroscopy for chemical analysis  

E-Print Network (OSTI)

spectroscopy for chemical analysis K. Horiba, Y. Nakamura, N. Nagamura, S. Toyoda, H. Kumigashira et al-level alignment at noble metal/organic interfaces Appl. Phys. Lett. 99, 183302 (2011) Note: Heated sample platform three-dimensional spatial-resolved electron spectroscopy for chemical analysis K. Horiba,1,2,3,a) Y

Miyashita, Yasushi

331

Spatially resolved non-invasive chemical stimulation for modulation of signalling in reconstructed neuronal networks  

Science Journals Connector (OSTI)

...Spatially resolved non-invasive chemical stimulation for modulation...Localized non-invasive on-chip chemical stimulation of micropatterned...and N Voelker2004A biochip platform for cell transfection assaysBiosens...and M Nishizawa2005Localized chemical stimulation of cellular micropatterns...

2006-01-01T23:59:59.000Z

332

The Chandra Survey of Outflows in AGN with Resolved Spectroscopy (SOARS)  

E-Print Network (OSTI)

The Chandra Survey of Outflows in AGN with Resolved Spectroscopy (SOARS) Dan Evans (Elon University), Matteo Guainazzi (ESAC), Martin Ward (Durham), Ric Davies (MPE), James Reeves (Keele), Kim Weaver (GSFC. 2009; Bianchi, Evans et al. 2010) NLR in a Type 2 AGN #12;10 15 20 Wavelength (?) 5x10-5 1x10-4 2x10

Evans, Dan

333

The Chandra Survey of Outflows in AGN with Resolved Spectroscopy (SOARS)  

E-Print Network (OSTI)

The Chandra Survey of Outflows in AGN with Resolved Spectroscopy (SOARS) Dan Evans (CfA and Elon (Durham), Ric Davies (MPE), James Reeves (Keele), Mike Crenshaw (GSU), Steve Kraemer (CUA), Kim Weaver, Evans et al. 2010) NLR in a Type 2 AGN Largest observable structure from soft X-rays to near

Evans, Dan

334

Compact cryogenic Kerr microscope for time-resolved studies of electron spin transport in microstructures  

E-Print Network (OSTI)

Compact cryogenic Kerr microscope for time-resolved studies of electron spin transport A compact cryogenic Kerr microscope for operation in the small volume of high-field magnets is described-temperature optical microscope, elec- tromagnet and cryogenic cell with cold finger to measure continuous-wave cw

van der Wal, Caspar H.

335

Conformational Substates of Myoglobin Intermediate Resolved by Picosecond Xray Solution Scattering  

E-Print Network (OSTI)

Conformational Substates of Myoglobin Intermediate Resolved by Picosecond Xray Solution Scattering: Conformational substates of proteins are generally considered to play important roles in regulating protein with the conformational substates using picosecond X-ray solution scattering. By applying kinetic analysis considering all

Ihee, Hyotcherl

336

Temporally resolved ion velocity distribution measurements in a radio-frequency plasma sheath  

E-Print Network (OSTI)

and within a radio-frequency (RF) biased plasma sheath is studied experimentally with a pulsed laserTemporally resolved ion velocity distribution measurements in a radio-frequency plasma sheath B; therefore, radio-frequency (RF) biases which result in zero net electrical current to the substrate

California at Los Angles, University of

337

Quantifying and Resolving Remote Memory Access Contention on Hardware DSM Multiprocessors  

E-Print Network (OSTI)

Quantifying and Resolving Remote Memory Access Contention on Hardware DSM Multiprocessors Dimitrios contributions: It pro- poses a new methodology for quantifying remote memory access contention on hardware DSM each DSM node to each page in memory. A trace of the memory accesses of the pro- gram obtained

Nikolopoulos, Dimitris

338

Source apportionment of time-and size-resolved ambient particulate matter , Philip K. Hopke b,  

E-Print Network (OSTI)

International Airport were analyzed for the elemental composition using synchrotron X-ray fluorescence Airport emission sources Size- and time-resolved particulate matter samples collected using eight-stage Davis Rotating-drum Universal- size-cut Monitoring (DRUM) impactors at the Washington-Dulles

Navasca, Carmeliza

339

Time-Resolved Magnetic Flux and AC-Current Distributions in Superconducting YBCO Thin Films and  

E-Print Network (OSTI)

Time-Resolved Magnetic Flux and AC-Current Distributions in Superconducting YBCO Thin Films and Multifilament Ran Yang College of William & Mary, Department of Applied Science, 2008 Field: Surface and Interface Science, Degree: Ph.D. Advisor: Gunter Luepke, Associate Professor of Applied Science Abstract

Shaw, Leah B.

340

Testing the Fixed Anvil Temperature Hypothesis in a Cloud-Resolving Model  

Science Journals Connector (OSTI)

Using cloud-resolving simulations of tropical radiativeconvective equilibrium, it is shown that the anvil temperature changes by less than 0.5 K with a 2-K change in SST, lending support to the fixed anvil temperature (FAT) hypothesis. The ...

Zhiming Kuang; Dennis L. Hartmann

2007-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Spatially resolved lasers using a glassy cholesteric liquid crystal film with lateral pitch gradient  

E-Print Network (OSTI)

Spatially resolved lasers using a glassy cholesteric liquid crystal film with lateral pitch crystal CLC lasers, a lateral pitch gradient was introduced by thermally activated diffusion across efficiencies, 0.2%­1.5%, are superior to those reported to date for gradient-pitch CLC lasers. © 2011 American

Chen, Shaw H.

342

Time-Resolved EPR Study of Singlet Oxygen in the Gas Phase Marco Ruzzi,  

E-Print Network (OSTI)

Time-Resolved EPR Study of Singlet Oxygen in the Gas Phase Marco Ruzzi, Elena Sartori, Alberto States ABSTRACT: X-band EPR spectra of singlet O2(1 g) and triplet O2(3 g - ) were observed in the gas, and perfluoronaphthalene in the gas phase. The EPR spectrum of O2(1 g) was also observed under microwave discharge

Turro, Nicholas J.

343

Time-resolved study of the symmetric SN2-reaction I Roland Wester,a)  

E-Print Network (OSTI)

Time-resolved study of the symmetric SN2-reaction I? ¿CH3I Roland Wester,a) Arthur E. Bragg, Alison of negative ions has been applied to study the title reaction as a model system for gas phase SN2 reactions dynamics are expected for entrance channel complex formed in the first step of a gas phase SN2 reaction

Neumark, Daniel M.

344

From concentric eyewall to annular hurricane: A numerical study with the cloud-resolved WRF model  

E-Print Network (OSTI)

(secondary eyewall) in coincidence with a local tangential wind max- imum around the pre-existing eyewallFrom concentric eyewall to annular hurricane: A numerical study with the cloud-resolved WRF model Research and Forecasting (WRF) model, the transformation from a non- AH to an AH through a concentric

Wang, Bin

345

Cloud system resolving model simulations of tropical cloud systems observed during the Tropical  

E-Print Network (OSTI)

the Weather Research and Forecasting (WRF) model. The WRF model is configured with a highest-resolving domain convection. The second regime is a monsoon break, which contains intense localized systems that are rep-based observational systems including a polarimetric weather radar, cloud radar, wind profilers, radi- ation

Jakob, Christian

346

Power beaming providing a space power infrastructure  

SciTech Connect

This study, based on two levels of technology, applies the power beaming concept to four planned satellite constellations. The analysis shows that with currently available technology, power beaming can provide mass savings to constellations in orbits ranging from low earth orbit to geosynchronous orbit. Two constellations, space surveillance and tracking system and space based radar, can be supported with current technology. The other two constellations, space-based laser array and boost surveillance and tracking system, will require power and transmission system improvements before their breakeven specific mass is achieved. A doubling of SP-100 conversion efficiency from 10 to 20/% would meet or exceed breakeven for these constellations.

Bamberger, J.A.; Coomes, E.P.

1992-08-01T23:59:59.000Z

347

Power Factor Improvement  

E-Print Network (OSTI)

Power factor control is a necessary ingredient in any successful Energy Management Program. Many companies are operating with power factors of 70% or less and are being penalized through the electrical utility bill. This paper starts by describing...

Viljoen, T. A.

1979-01-01T23:59:59.000Z

348

Savings Through Power Quality  

E-Print Network (OSTI)

. Harmonics can be cause of inefficient distribution of power, power line carrier (PLC), egg. Clocks and Energy Management Systems (EMS). Finally, harmonics can cause utility meters, KW Demand and KWH consumption, to register false readings. Electro...

Mehrdad, M.

2005-01-01T23:59:59.000Z

349

Nuclear power: an outlook  

Science Journals Connector (OSTI)

Nuclear power: an outlook ... For nuclear power to regain public acceptance and investor confidence, the nation's nuclear plants must sustain an unblemished safety record, reflecting an industrywide commitment to the highest professional standards. ...

1983-11-14T23:59:59.000Z

350

ELECTROCHEMICAL POWER FOR TRANSPORTATION  

E-Print Network (OSTI)

that is powered by an electric motor which is driven byPower module Reactor Electric motor Toyota EVlH electricdesign package including an electric motor and associated

Cairns, Elton J.

2012-01-01T23:59:59.000Z

351

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

low power situations there's a mechanism: lBurst mode deep cycles e-caps, which can overheat them, and cause wearout quicker. lAlso, at low power the converters are less...

352

Body powered thermoelectric systems  

E-Print Network (OSTI)

Great interest exists for and progress has be made in the effective utilization of the human body as a possible power supply in hopes of powering such applications as sensors and continuously monitoring medical devices ...

Settaluri, Krishna Tej

2012-01-01T23:59:59.000Z

353

Fundamentals of Power Electronics  

Science Journals Connector (OSTI)

This chapter gives a description and overview of power electronic technologies including a description of the fundamental systems that are the building blocks of power electronic systems. Technologies that are de...

Edison R. C. da Silva; Malik E. Elbuluk

2013-01-01T23:59:59.000Z

354

Data Center Power Consumption  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Center Power Consumption Center Power Consumption A new look at a growing problem Fact - Data center power density up 10x in the last 10 years 2.1 kW/rack (1992); 14 kW/rack (2007) Racks are not fully populated due to power/cooling constraints Fact - Increasing processor power Moore's law Fact - Energy cost going up 3 yr. energy cost equivalent to acquisition cost Fact - Iterative power life cycle Takes as much energy to cool computers as it takes to power them. Fact - Over-provisioning Most data centers are over-provisioned with cooling and still have hot spots November 2007 SubZero Engineering An Industry at the Crossroads Conflict between scaling IT demands and energy efficiency Server Efficiency is improving year after year Performance/Watt doubles every 2 years Power Density is Going Up

355

ELECTROCHEMICAL POWER FOR TRANSPORTATION  

E-Print Network (OSTI)

resistant material for contact with s Low-cost seals Low-cost electrolyte Specific power is low Thermal

Cairns, Elton J.

2012-01-01T23:59:59.000Z

356

wind power station  

Science Journals Connector (OSTI)

wind power station [It may consist of just one wind turbine or a network of windmills] ? Windkraftanlage

2014-08-01T23:59:59.000Z

357

Power Plant Cycling Costs  

SciTech Connect

This report provides a detailed review of the most up to date data available on power plant cycling costs. The primary objective of this report is to increase awareness of power plant cycling cost, the use of these costs in renewable integration studies and to stimulate debate between policymakers, system dispatchers, plant personnel and power utilities.

Kumar, N.; Besuner, P.; Lefton, S.; Agan, D.; Hilleman, D.

2012-07-01T23:59:59.000Z

358

TERRORISM AND NUCLEAR POWER  

Science Journals Connector (OSTI)

TERRORISM AND NUCLEAR POWER ... The attacks of Sept. 11 raise fear that U.S. nuclear power plants may be vulnerable ... THE TERRORIST ATTACKS ON THE World Trade Center and Pentagon are forcing a reexamination of the security of the nation's 103 nuclear power plants by nuclear's advocates and foes alike. ...

JEFF JOHNSON

2001-10-08T23:59:59.000Z

359

Green Power Inverter Prvningsrapport  

E-Print Network (OSTI)

Green Power Inverter Prøvningsrapport SolenergiCentret Søren Poulsen Ivan Katic Oktober 2004 #12;Green Power Inverter målerapport.doc SolenergiCentret - 04-03-2005 2 Forord Nærværende rapport indeholder Teknologisk Instituts bidrag til målinger i forbindelse med PSO projektet "Green Power Inverter

360

Single- and double-electron capture by 1-100-keV protons in collisions with magnesium and barium atoms  

Science Journals Connector (OSTI)

Absolute total cross sections for single- and double-electron capture by H+ in collisions with Mg and Ba have been measured for energies between 1 and 100 keV. The single-electron-capture cross section has also been calculated with the Gryzinski formalism of the classical binary-encounter approximation. The measured cross sections exhibit both high- and low-energy structure. The high-energy behavior is in accord with the Brinkman-Kramers results and classical predictions for the energy at which inner-shell capture becomes important. The low-energy behavior is discussed in terms of a molecular picture of the collision. The cross sections are shown to be critically dependent on curve-crossing effects which occur at avoided crossings between potential curves. At low energies the double-electron-capture cross section in Mg shows pronounced structure consistent with a description of the collision in terms of transitions via the intermediate H (1s) state. It is shown that this mechanism is not important in Ba, since curve crossings are expected to take place at internuclear separations too large for transitions to occur. A possible explanation for the decrease in single-electron-capture cross section in Ba at low energies is suggested in terms of competition from direct target-excitation collisions. For single-electron capture in Mg, recent low-energy perturbed-stationary-state calculations and high-energy classical-trajectory Monte Carlo calculations by Olson and Liu are in good agreement with experiment. The present classical binary-encounter approximation results for single-electron capture in both Mg and Ba agree with experiment to within a factor of 2 over the entire energy range. Measurements of single- and double-electron capture are also reported for Ar targets. A pronounced second maximum in the double-electron-capture cross section is found.

T. J. Morgan and F. J. Eriksen

1979-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Electronic stopping?power calculations for heavy ions in semiconductors  

Science Journals Connector (OSTI)

A model for ion stopping in semiconductors which considers separate stopping contributions from valence and core electrons and explicitly includes the effect of the gap has been used to calculate the electronic stopping power of energetic B P and As in Si Ge GaAs and CdTe for projectile energies 10 keV100 MeV. Account was taken of the partially stripped incident ions by means of the effective charge. There is good agreement at low ion velocity with Lindhard and Scharffs [J. Lindhard and M. Scharff Phys. Rev. 1 2 4 128 (1961)] values which for heavy ions do not depend on effective charge theory as well as with the semiempirical curves at energies E?0.2 MeV/nucleon where they can be compared.

S. G. Elkomoss; A. Pape; S. Unamuno

1990-01-01T23:59:59.000Z

362

Wind for Schools Project Power System Brief, Wind Powering America...  

Wind Powering America (EERE)

Wind Powering America Fact Sheet Series Energy Efficiency & Renewable Energy Wind for Schools Project Power System Brief Wind for Schools Project Power System Brief Wind for...

363

Karnataka Power Corporation Limited and National Thermal Power...  

Open Energy Info (EERE)

Limited and National Thermal Power Corporation JV Jump to: navigation, search Name: Karnataka Power Corporation Limited and National Thermal Power Corporation JV Place: India...

364

Time-and size-resolved chemical composition of submicron particles in Pittsburgh: Implications for aerosol sources and processes  

E-Print Network (OSTI)

Time- and size-resolved chemical composition of submicron particles in Pittsburgh: Implications), Time- and size-resolved chemical composition of submicron particles in Pittsburgh: Implications] Atmospheric aerosols have important adverse impacts on human health [Dockery et al., 1993; Pope et al., 2002

Jimenez, Jose-Luis

365

PUBLISHED ONLINE: 7 JUNE 2009 | DOI: 10.1038/NPHYS1303 Resolved-sideband and cryogenic cooling of an  

E-Print Network (OSTI)

LETTERS PUBLISHED ONLINE: 7 JUNE 2009 | DOI: 10.1038/NPHYS1303 Resolved-sideband and cryogenic-sideband and cryogenic cooling. Mechanical oscillations of a deformed silica microsphere are coupled to optical challenges in combining resolved-sideband cooling with cryogenic precooling for most optomechanical

Loss, Daniel

366

Time-resolved diffraction profiles and atomic dynamics in short-pulse laser-induced structural transformations: Molecular dynamics study  

E-Print Network (OSTI)

Time-resolved diffraction profiles and atomic dynamics in short-pulse laser-induced structural dynamics simulations of a 20 nm Au film irradiated with 200 fs laser pulses of different intensity in time-resolved x-ray and electron diffraction experiments. Three processes are found to be responsible

Zhigilei, Leonid V.

367

Electric Power Monthly  

Gasoline and Diesel Fuel Update (EIA)

Electric Power Monthly > Electric Power Monthly Back Issues Electric Power Monthly > Electric Power Monthly Back Issues Electric Power Monthly Back Issues Monthly Excel files zipped 2010 January February March April May June July August September October November December 2009 January February March April May June July August September October November December 2008 January February March March Supplement April May June July August September October November December 2007 January February March April May June July August September October November December 2006 January February March April May June July August September October November December 2005 January February March April May June July August September October November December

368

Multimode power processor  

DOE Patents (OSTI)

In one embodiment, a power processor which operates in three modes: an inverter mode wherein power is delivered from a battery to an AC power grid or load; a battery charger mode wherein the battery is charged by a generator; and a parallel mode wherein the generator supplies power to the AC power grid or load in parallel with the battery. In the parallel mode, the system adapts to arbitrary non-linear loads. The power processor may operate on a per-phase basis wherein the load may be synthetically transferred from one phase to another by way of a bumpless transfer which causes no interruption of power to the load when transferring energy sources. Voltage transients and frequency transients delivered to the load when switching between the generator and battery sources are minimized, thereby providing an uninterruptible power supply. The power processor may be used as part of a hybrid electrical power source system which may contain, in one embodiment, a photovoltaic array, diesel engine, and battery power sources.

O'Sullivan, George A. (Pottersville, NJ); O'Sullivan, Joseph A. (St. Louis, MO)

1999-01-01T23:59:59.000Z

369

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

6 Northern Power Systems, Inc 6 Northern Power Systems, Inc Northern Power Systems 182 Mad River Park Waitsfield, VT 05673 Ultracapacitor EnergyBridge(tm) UPS for Palmdale Water District DOE/ESS PEER Review November 3, 2006 11/03/2006 Northern Power Systems, Inc © 2006 2 Northern Power  Distributed Energy Systems Corp (NASDAQ:DESC)  Energy Solutions since 1974  Products, Systems and Services Divisions  Hundreds of Projects around the World  HQ and Manufacturing in Vermont  Regional offices in NY, TX, CA, England, and Mexico 11/03/2006 Northern Power Systems, Inc © 2006 3 Project Overview  CEC - California Energy Commission  Funding agency  Palmdale Water District  Award recipient, host site  Northern Power  Technology provider  Black & Veatch  Owner's engineer

370

Biomass plants face wood supply risks Report warns giant new biomass power plants will be hugely reliant on wood chip  

E-Print Network (OSTI)

Biomass plants face wood supply risks Report warns giant new biomass power plants will be hugely's biomass energy sector could be undermined unless businesses move to resolve the supply chain issues-scale biomass plants will leave generators largely reliant on biomass from overseas such as wood chips, elephant

371

Vehicle Technologies Office: Power Electronics  

NLE Websites -- All DOE Office Websites (Extended Search)

Power Electronics to Power Electronics to someone by E-mail Share Vehicle Technologies Office: Power Electronics on Facebook Tweet about Vehicle Technologies Office: Power Electronics on Twitter Bookmark Vehicle Technologies Office: Power Electronics on Google Bookmark Vehicle Technologies Office: Power Electronics on Delicious Rank Vehicle Technologies Office: Power Electronics on Digg Find More places to share Vehicle Technologies Office: Power Electronics on AddThis.com... Just the Basics Hybrid & Vehicle Systems Energy Storage Advanced Power Electronics & Electrical Machines Power Electronics Electrical Machines Thermal Control & System Integration Advanced Combustion Engines Fuels & Lubricants Materials Technologies Power Electronics The power electronics activity focuses on research and development (R&D)

372

Power network analysis and optimization  

E-Print Network (OSTI)

Marek-Sadowska, On-chip power supply network optimizationtechniques for full-chip power supply noise analysis IEEEFull-chip vectorless dynamic power integrity analysis and

Zhang, Wanping

2009-01-01T23:59:59.000Z

373

Principle Power | Open Energy Information  

Open Energy Info (EERE)

Principle Power Place: San Francisco, California Zip: 94120 Sector: Renewable Energy Product: Principle Power is a global independent power producer committed to delivering green,...

374

ANL Study Shows Wind Power Decreases Power Sector Emissions ...  

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

ANL Study Shows Wind Power Decreases Power Sector Emissions ANL Study Shows Wind Power Decreases Power Sector Emissions May 1, 2012 - 3:38pm Addthis This is an excerpt from the...

375

Scotrenewables Wind Power and Marine Power Ltd | Open Energy...  

Open Energy Info (EERE)

Wind Power and Marine Power Ltd Jump to: navigation, search Name: Scotrenewables Wind Power and Marine Power Ltd Place: Orkey, Scotland, United Kingdom Zip: KW16 3AW Sector:...

376

EA-1726: Kahuku Wind Power, LLC Wind Power Generation Facility...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

6: Kahuku Wind Power, LLC Wind Power Generation Facility, O'ahu, HI EA-1726: Kahuku Wind Power, LLC Wind Power Generation Facility, O'ahu, HI May 3, 2010 EA-1726: Final...

377

Northwest Power and Conservation Council Fifth Northwest Power Plan  

E-Print Network (OSTI)

.........................................................................................................................................15 E. Wind power................................................................................................................................................24 M. Fish and Wildlife

378

SPUTTERING AND MOLECULAR SYNTHESIS INDUCED BY 100 keV PROTONS IN CONDENSED CO{sub 2} AND RELEVANCE TO THE OUTER SOLAR SYSTEM  

SciTech Connect

We present results on sputtering and radiation chemistry of CO{sub 2} films induced by 100 keV H{sup +} at 25 and 50 K. Using a quartz crystal microbalance, we measure a sputtering yield (SY) between {approx}10 and 20 CO{sub 2} equivalent per ion at 25 K. The yield at 50 K is similar to that at 25 K at low fluences, but increases to {approx}2400 by mid-10{sup 14} H{sup +} cm{sup -2} and declines at higher fluence. Irradiation to 1 Multiplication-Sign 10{sup 15} H{sup +} cm{sup -2} depletes {approx}85%-90% of the initial film mass at 50 K, compared to 3% at 25 K. In both cases, mass spectrometry shows that CO is the dominant constituent in the sputtered flux, followed by O{sub 2}, O, and CO{sub 2}. Using infrared spectroscopy, we monitor the depletion of CO{sub 2} and the accumulation of CO and O{sub 2} and minor species as O{sub 3} and CO{sub 3}. We determine G(-CO{sub 2}) = 2.6 {+-} 0.3, the number of CO{sub 2} destroyed per 100 eV at 25 K. A significant fraction of the radiolyzed CO and O{sub 2} are retained in the film at 25 K; only those near the surface are removed during irradiation, contributing to a smaller SY. At 50 K, CO and O{sub 2} are unstable along the 'hot' ion track and are expelled possibly from the entire depth of the film. Our results, and the lack of detection of CO in the exospheres around Rhea and Dione, show that the CO{sub 2} does not originate from sputtering, since otherwise the exosphere would be dominated by CO, the main molecule in the sputtered flux. We suggest that the exospheric CO{sub 2} is thermally released from an endogenic source.

Raut, U.; Baragiola, R. A. [Laboratory for Atomic and Surface Physics, University of Virginia, Thornton Hall B103, Charlottesville, VA 22904 (United States)

2013-07-20T23:59:59.000Z

379

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

SciTech Connect

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.

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

2011-04-01T23:59:59.000Z

380

Development of a Fast Time-Resolved Aerosol Collector (Fast TRAC)  

NLE Websites -- All DOE Office Websites (Extended Search)

Yu Yu & James Cowin PNNL Fast Time-Resolved Aerosol Collector ......Fast TRAC...... Xiao-Ying Yu, Ali Hashim, Martin Iedema, and James Cowin Atmospheric Sciences, Chemical Sciences Pacific Northwest National Laboratory Richland, WA Research is supported by NOAA & DOE. *Patent Pending Xiao-Ying Yu & James Cowin PNNL Cloud Microstructures ≤ 1 m Want to know the aerosols at this resolution Aircraft flies at 150 m/s Need time resolution 1 m/150 m/s = 6 ms (!!!!!) Xiao-Ying Yu & James Cowin PNNL What is TRAC? - Time-Resolved Aerosol Collector * Uses an impactor * ~ 600 TEM samples * Flow rate: 1 l/min * Time resolution: ≥ 1 min* * Applications: Off-line analysis: - particle hygroscopicity, morphology, composition.. (6.5 in) 3 , 7 lb, 12 V, 8 W 0% 20% 40% 60%

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Time-Resolved NMR: Extracting the Topology of Complex Enzyme Networks  

NLE Websites -- All DOE Office Websites (Extended Search)

Resolved Resolved NMR: Extracting the Topology of Complex Enzyme Networks Yingnan Jiang, † Tyler McKinnon, † Janani Varatharajan, † John Glushka, † James H. Prestegard, † Andrew T. Sornborger, ‡§ Heinz-Bernd Schu ¨ ttler, { and Maor Bar-Peled † * † Complex Carbohydrate Research Center, ‡ Department of Mathematics, § Faculty of Engineering, and { Department of Physics and Astronomy, University of Georgia, Athens, Georgia ABSTRACT The use of nondestructive NMR spectroscopy for enzymatic studies offers unique opportunities to identify nearly all enzymatic byproducts and detect unstable short-lived products or intermediates at the molecular level; however, numerous challenges must be overcome before it can become a widely used tool. The biosynthesis of acetyl-coenzyme A (acetyl-CoA) by acetyl-CoA synthetase is used here as a case study for the development of

382

Workshop: Time Resolved X-Ray Science at High Repetition Rate | Stanford  

NLE Websites -- All DOE Office Websites (Extended Search)

Time Resolved X-Ray Science at High Repetition Rate Time Resolved X-Ray Science at High Repetition Rate Saturday, October 22, 2011 - 8:30am SSRL Conference Room 137-322 In conjunction with the 2011 LCLS/SSRL User Meeting, SSRL and the APS will jointly host a two-day workshop focused on opportunities with short-pulse, high-repetition rate X-ray Science. The workshop will feature international speakers and panel experts presenting the scientific basis, preliminary results and future potential of high rep-rate picosecond x-rays beams from storage rings. The workshop will be broadly focused on topics in materials science, chemistry, biology and catalysis. The workshop agenda will also include presentations on accelerator operational modes, precision timing issues, detector challenges and the relation of storage ring science with

383

Time-resolved fuel injector flow characterisation based on 3D laser Doppler vibrometry  

E-Print Network (OSTI)

In order to enable investigations of the fuel flow inside unmodified injectors, we have developed a new experimental approach to measure time-resolved vibration spectra of diesel nozzles using a three dimensional laser vibrometer. The technique we propose is based on the triangulation of the vibrometer and fuel pressure transducer signals, and enables the quantitative characterisation of quasi-cyclic internal flows without requiring modifications to the injector, the working fluid, or limiting the fuel injection pressure. The vibrometer, which uses the Doppler effect to measure the velocity of a vibrating object, was used to scan injector nozzle tips during the injection event. The data were processed using a discrete Fourier transform to provide time-resolved spectra for valve-closed-orifice, minisac and microsac nozzle geometries, and injection pressures ranging from 60 to 160MPa, hence offering unprecedented insight into cyclic cavitation and internal mechanical dynamic processes. A peak was consistently f...

Crua, Cyril

2015-01-01T23:59:59.000Z

384

Source apportionment of time- and size-resolved ambient particulate matter  

Science Journals Connector (OSTI)

Abstract Size- and time-resolved particulate matter samples collected using eight-stage Davis Rotating-drum Universal-size-cut Monitoring (DRUM) impactors at the Washington-Dulles International Airport were analyzed for the elemental composition using synchrotron X-ray fluorescence. A physically realistic three-way factor analysis model consisting of the outer products of matrices (profiles) times a vector of mass contributions was applied to these data. The problem was solved using a weighted alternating least squares method. Five major emission sources: soil, road salt, aircraft landings, transported secondary sulfate, and local sulfate/construction were identified. The study shows that time- and size-resolved RDI data can assist in the identification of the airport emission sources and atmospheric processes leading to the observed ambient concentrations.

Na Li; Philip K. Hopke; Pramod Kumar; Steven S. Cliff; Yongjing Zhao; Carmeliza Navasca

2013-01-01T23:59:59.000Z

385

Time and spectrum-resolving mutiphoton correlator for 300-900 nm  

E-Print Network (OSTI)

We demonstrate a single-photon sensitive spectrometer in the visible range, which allows us to perform time-resolved and multi-photon spectral correlation measurements. It is based on a monochromator composed of two gratings, collimation optics and an array of single photon avalanche diodes. The time resolution can reach $110$ ps and the spectral resolution is $2$ nm/pixel, limited by the design of the monochromator. This technique can easily be combined with commercial monochromators, and can be useful for joint spectrum measurements of two photons emitted in the process of parametric down conversion, as well as time-resolved spectrum measurements in optical coherence tomography or medical physics applications.

Johnsen, Kelsey D; Scarcella, Carmelo; Thibault, Marilyne; Tosi, Alberto; Jennewein, Thomas

2014-01-01T23:59:59.000Z

386

Time and spectrum-resolving mutiphoton correlator for 300-900 nm  

E-Print Network (OSTI)

We demonstrate a single-photon sensitive spectrometer in the visible range, which allows us to perform time-resolved and multi-photon spectral correlation measurements. It is based on a monochromator composed of two gratings, collimation optics and an array of single photon avalanche diodes. The time resolution can reach $110$ ps and the spectral resolution is $2$ nm/pixel, limited by the design of the monochromator. This technique can easily be combined with commercial monochromators, and can be useful for joint spectrum measurements of two photons emitted in the process of parametric down conversion, as well as time-resolved spectrum measurements in optical coherence tomography or medical physics applications.

Kelsey D. Johnsen; Piotr Kolenderski; Carmelo Scarcella; Marilyne Thibault; Alberto Tosi; Thomas Jennewein

2014-06-17T23:59:59.000Z

387

Tables and graphs of photon-interaction cross sections from 0. 1 keV to 100 MeV derived from the LLL evaluated-nuclear-data library  

SciTech Connect

Energy-dependent evaluated photon interaction cross sections and related parameters are presented for elements H through Cf(Z = 1 to 98). Data are given over the energy range from 0.1 keV to 100 MeV. The related parameters include form factors and average energy deposits per collision (with and without fluorescence). Fluorescence information is given for all atomic shells that can emit a photon with a kinetic energy of 0.1 keV or more. In addition, the following macroscopic properties are given: total mean free path and energy deposit per centimeter. This information is derived from the Livermore Evaluated-Nuclear-Data Library (ENDL) as of October 1978.

Plechaty, E.F.; Cullen, D.E.; Howerton, R.J.

1981-11-11T23:59:59.000Z

388

Band mapping in x-ray photoelectron spectroscopy: An experimental and theoretical study of W(110) with 1.25 keV excitation  

Science Journals Connector (OSTI)

Angle-resolved photoemission spectroscopy (ARPES) has generally been carried out at energies below ?150eV, but there is growing interest in going to higher energies so as to achieve greater bulk sensitivity. To this end, we have measured ARPES spectra from a tungsten (110) crystal in a plane containing the [100], [110], and [010] directions with a photon energy of 1253.6 eV. The experimental data are compared to free-electron final-state calculations in an extended zone scheme with no inclusion of matrix elements, as well as highly accurate one-step theory including matrix elements. Both models provide further insight into such future higher-energy ARPES measurements. Special effects occurring in a higher-energy ARPES experiment, such as photon momentum, phonon-induced zone averaging effects, and the degree of cryogenic cooling required are discussed, together with qualitative predictions via appropriate Debye-Waller factors for future experiments with a number of representative elements being presented.

C. Papp; L. Plucinski; J. Minar; J. Braun; H. Ebert; C. M. Schneider; C. S. Fadley

2011-07-18T23:59:59.000Z

389

Training: Probing Solar Photoconversion Using Flash-Photolysis Time-Resolved Microwave Conductivity (FP-TRMC)  

NLE Websites -- All DOE Office Websites (Extended Search)

Probing Probing solar photoconversion using flash---photolysis 6 me--- resolved microwave conduc6vity (FP---TRMC) Chemical & Nanosciences Group Chemical & Materials Science Center NREL is a na*onal laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. TRMC users ๏ PI: Garry Rumbles ๏ Current users - Rebecca Callahan (liquid crystal donor materials) - Ryan Crisp (semiconductor NC

390

Early stage expansion and time-resolved spectral emission of laser-induced  

NLE Websites -- All DOE Office Websites (Extended Search)

Early stage expansion and time-resolved spectral emission of laser-induced Early stage expansion and time-resolved spectral emission of laser-induced plasma from polymer Title Early stage expansion and time-resolved spectral emission of laser-induced plasma from polymer Publication Type Journal Article Year of Publication 2009 Authors Boueri, Myriam, Matthieu Baudelet, Jin Yu, Xianglei Mao, Samuel S. Mao, and Richard E. Russo Journal Applied Surface Science Volume 255 Issue 24 Pagination 9566-9571 Date Published 09/2009 Keywords Early stage plasma expansion, Laser ablation of polymer, Plasma spectral emission Abstract In the nanosecond laser ablation regime, absorption of laser energy by the plasma during its early stage expansion critically influences the properties of the plasma and thus its interaction with ambient air. These influences can significantly alter spectral emission of the plasma. For organic samples especially, recombination of the plasma with the ambient air leads to interfering emissions with respect to emissions due to native species evaporated from the sample. Distinguishing interfering emissions due to ambient air represents a critical issue for the application of laser-induced breakdown spectroscopy (LIBS) to the analysis of organic materials. In this paper, we report observations of early stage expansion and interaction with ambient air of the plasma induced on a typical organic sample (nylon) using timeresolved shadowgraph. We compare, in the nanosecond ablation regime, plasmas induced by infrared (IR) laser pulses (1064 nanometers) and ultraviolet (UV) laser pulses (266 nanometers). Nanosecond ablation is compared with femtosecond ablation where the post-ablation interaction is absent. Subsequent to the early stage expansion, we observe for each studied ablation regime, spectral emission from CN, a typical radical for organic and biological samples. Time-resolved LIBS allows identifying emissions from native molecular species and those due to recombination with ambient air through their different time evolution behaviors.

391

Use of time- and chemically resolved particulate data to characterize the  

NLE Websites -- All DOE Office Websites (Extended Search)

Use of time- and chemically resolved particulate data to characterize the Use of time- and chemically resolved particulate data to characterize the infiltration of outdoor PM2.5 into a residence in the San Joaquin Valley Title Use of time- and chemically resolved particulate data to characterize the infiltration of outdoor PM2.5 into a residence in the San Joaquin Valley Publication Type Journal Article Year of Publication 2003 Authors Lunden, Melissa M., Tracy L. Thatcher, Susanne V. Hering, and Nancy J. Brown Journal Environmental Science and Technology Volume 37 Start Page Chapter Pagination 4724-4732 Date Published October 15, 2003 Abstract Recent studies associate particulate air pollution with adverse health effects. The indoor exposure to particles of outdoor origin is not well characterized, particularly for individual chemical species. In response to this, a field study in an unoccupied, single-story residence in Clovis, California was conducted. Real-time particle monitors were used both outdoors and indoors to quantity PM2.5 nitrate, sulfate, and carbon. The aggregate of the highly time-resolved sulfate data, as well as averages of these data, was fit using a time-averaged form of the infiltration equation, resulting in reasonable values for the penetration coefficient and deposition velocity. In contrast, individual values of the indoor/outdoor ratio can vary significantly from that predicted by the model for time scales ranging from a few minutes to several hours. Measured indoor ammonium nitrate levels were typically significantly lower than expected based solely on penetration and deposition losses. The additional reduction is due to the transformation of ammonium nitrate into ammonia and nitric acid gases indoors, which are subsequently lost by deposition and sorption to indoor surfaces. This result illustrates that exposure assessments based on total outdoor particle mass can obscure the actual causal relationships for indoor exposures

392

Time-resolved far-infrared experiments at the National Synchrotron Light Source. Final report  

SciTech Connect

A facility for time-resolved infrared and far-infrared spectroscopy has been built and commissioned at the National Synchrotron Light Source. This facility permits the study of time dependent phenomena over a frequency range from 2-8000cm{sup {minus}1} (0.25 meV-1 eV). Temporal resolution is approximately 200 psec and time dependent phenomena in the time range out to 100 nsec can be investigated.

Tanner, D.B.; Reitze, D.H.; Carr, G.L.

1999-10-12T23:59:59.000Z

393

Resolved dipole strength below the E1 giant resonance in 138 R.-D. Herzberg,1,  

E-Print Network (OSTI)

Resolved dipole strength below the E1 giant resonance in 138 Ba R.-D. Herzberg,1, * C. Fransen,1 P,1 H. Tiesler,1 D. Weisshaar,1 and I. Wiedenho¨ver1, 1 Institut fu¨r Kernphysik, Universita¨t zu Ko¨ln, D-50937 Ko¨ln, Germany 2 Institut fu¨r Kernphysik, Technische Universita¨t Darmstadt, D-64289

Ponomarev, Vladimir

394

Angle-resolved photoemission studies of single-crystal YBa2Cu3O7-x  

Science Journals Connector (OSTI)

We present the first angle-resolved photoemission and low-energy electron-diffraction (LEED) results obtained from clean single-crystal YBa2Cu3O7-x (001) surfaces prepared by cleaving in a vacuum. The surfaces exhibit (11)-ordered LEED patterns, but many of the photoemission features exhibit little or no angular dependence. The most important exception is the upper spectral edge, which shows angular dispersion and a strong photon energy dependence.

N. G. Stoffel; Y. Chang; M. K. Kelly; L. Dottl; M. Onellion; P. A. Morris; W. A. Bonner; G. Margaritondo

1988-05-01T23:59:59.000Z

395

Enforcement actions: Significant actions resolved; Quarterly progress report, October--December 1993: Volume 12, No. 4  

SciTech Connect

This compilation summarizes significant enforcement actions that have been resolved during one quarterly period (October - December 1993) and includes copies of letters, Notices, and Orders sent by the Nuclear Regulatory Commission to licensees with respect to these enforcement actions. It is anticipated that the information in this publication will be widely disseminated to managers and employees engaged in activities licensed by the NRC, so that actions can be taken to improve safety by avoiding future violations similar to those described in this publication.

NONE

1994-03-01T23:59:59.000Z

396

Biomass: Potato Power  

NLE Websites -- All DOE Office Websites (Extended Search)

POTATO POWER POTATO POWER Curriculum: Biomass Power (organic chemistry, chemical/carbon cycles, plants, energy resources/transformations) Grade Level: Grades 2 to 3 Small groups (3 to 4) Time: 30 to 40 minutes Summary: Students assemble a potato battery that will power a digital clock. This shows the connection between renewable energy from biomass and its application. Provided by the Department of Energy's National Renewable Energy Laboratory and BP America Inc. BIOPOWER - POTATO POWER Purpose: Can a potato power a clock? Materials:  A potato  A paper plate  Two pennies  Two galvanized nails  Three 8 inch insulated copper wire, with 2 inches of the insulation removed from the ends  A digital clock (with places for wire attachment)

397

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Arkansas Power Electronics International, Inc. Arkansas Power Electronics International, Inc. DOE Peer Review November 2-3, 2006 Marcelo Schupbach, Ph.D. Senior Engineer APEI, Inc. 535 Research Center Blvd. Fayetteville, AR 72701 Phone: (479)-443-5759 Email: marcelo@apei.net Website: www.apei.net High Temperature and High Power Density SiC Power Electronic Converters Energy Storage Systems Program 2 Overview * APEI, Inc. Corporate Status * Broader Impact of SiC-based Power Converter * DOE Energy Storage System Program Phase I SBIR - SBIR Topic: Wide Band Gap Power Converter Application - APEI's Goals - Phase I Accomplishments * DOE Energy Storage System Program Phase II SBIR - APEI's Goals - Research Team and Partners - Project Status Energy Storage Systems Program 3 APEI, Inc. Mission Statement We are a small business dedicated to

398

DSW Power Projects  

NLE Websites -- All DOE Office Websites (Extended Search)

Power Projects Contact DSW Customers Customer Meetings Environmental Review-NEPA Operations & Maintenance Planning & Projects Power Marketing Power Projects Contact DSW Customers Customer Meetings Environmental Review-NEPA Operations & Maintenance Planning & Projects Power Marketing Rates DSW Power Projects Boulder Canyon: Straddling the Colorado River near the Arizona-Nevada border, Hoover Dam in Boulder Canyon creates Lake Mead. River waters turning turbines at Hoover Powerplant produce about 2,074 MW--enough electricity for nearly 8 million people. Western markets this power to public utilities in Arizona, California and Nevada over 53.30 circuit-miles of transmission line. Central Arizona: Authorized in 1968, the Central Arizona Project in Arizona and western New Mexico was built to improve water resources in the Colorado River Basin. Segments of the authorization allowed for Federal participation in the Navajo Generating Station. The Federal share of the powerplant's combined capacity is 547 MW.

399

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

11 North American Power Group, Ltd. 11 North American Power Group, Ltd. November 17, 2011 North American Power Group, Ltd. Two Elk Energy Park Carbon Site Characterization Study Preliminary Geologic Model-Update DOE NETL Annual Meeting November, 15-17, 2011 North American Power Group Copyright 2011 NAPG Two Elk Project Location 2 North American Power Group Copyright 2011 NAPG Work Flow and Project Integration 3 North American Power Group Copyright 2011 NAPG Modeling Approach  Model basin architecture is basically constructed from data within a 25 x 25 mile square area  Geologists reviewed data and correlated tops and surfaces  Porosity, permeability, petrophysics and other information correlated from that data to create a baseline model  Additional data has yet to be added from seismic information and from on-site penetrations

400

Peak power ratio generator  

DOE Patents (OSTI)

A peak power ratio generator is described for measuring, in combination with a conventional power meter, the peak power level of extremely narrow pulses in the gigahertz radio frequency bands. The present invention in a preferred embodiment utilizes a tunnel diode and a back diode combination in a detector circuit as the only high speed elements. The high speed tunnel diode provides a bistable signal and serves as a memory device of the input pulses for the remaining, slower components. A hybrid digital and analog loop maintains the peak power level of a reference channel at a known amount. Thus, by measuring the average power levels of the reference signal and the source signal, the peak power level of the source signal can be determined.

Moyer, Robert D. (Albuquerque, NM)

1985-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Entangling Power of Permutations  

E-Print Network (OSTI)

The notion of entangling power of unitary matrices was introduced by Zanardi, Zalka and Faoro [PRA, 62, 030301]. We study the entangling power of permutations, given in terms of a combinatorial formula. We show that the permutation matrices with zero entangling power are, up to local unitaries, the identity and the swap. We construct the permutations with the minimum nonzero entangling power for every dimension. With the use of orthogonal latin squares, we construct the permutations with the maximum entangling power for every dimension. Moreover, we show that the value obtained is maximum over all unitaries of the same dimension, with possible exception for 36. Our result enables us to construct generic examples of 4-qudits maximally entangled states for all dimensions except for 2 and 6. We numerically classify, according to their entangling power, the permutation matrices of dimension 4 and 9, and we give some estimates for higher dimensions.

Lieven Clarisse; Sibasish Ghosh; Simone Severini; Anthony Sudbery

2005-02-07T23:59:59.000Z

402

Alternative Energy Technologies Solar Power  

E-Print Network (OSTI)

#12;Alternative Energy Technologies Solar Power Photovoltaics Concentrating Solar Power (CSP) Power;Concentrating Solar Power (CSP) Reflector material is Aluminum or Silver Tube material ..... Several possible, Philippines Vanadium ........ Swaziland, Central Africa Zinc ................ Peru, Canada, Mexico Silver

Scott, Christopher

403

Southeastern Power Administration | Department of Energy  

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

Southeastern Power Administration Southeastern Power Administration Southeastern Power Administration View All Maps Addthis...

404

SaskPower Small Power Producers Program (Saskatchewan, Canada) | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SaskPower Small Power Producers Program (Saskatchewan, Canada) SaskPower Small Power Producers Program (Saskatchewan, Canada) SaskPower Small Power Producers Program (Saskatchewan, Canada) < Back Eligibility Commercial Agricultural Industrial Residential Savings Category Solar Buying & Making Electricity Program Info Funding Source SaskPower State Saskatchewan Program Type Performance-Based Incentive Provider SaskPower The Small Power Producers Program accommodates customers who wish to generate up to 100 kilowatts (kW) of electricity for the purpose of offsetting power that would otherwise be purchased from SaskPower or for selling all of the power generated to SaskPower. At the beginning of the application process, you need to choose between one of two options: Sell all of the power you produce to SaskPower, or sell the

405

Karnataka Power Corporation Limited and National Thermal Power Corporation  

Open Energy Info (EERE)

Karnataka Power Corporation Limited and National Thermal Power Corporation Karnataka Power Corporation Limited and National Thermal Power Corporation JV Jump to: navigation, search Name Karnataka Power Corporation Limited and National Thermal Power Corporation JV Place India Sector Wind energy Product India-based wind power project developer. References Karnataka Power Corporation Limited and National Thermal Power Corporation JV[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Karnataka Power Corporation Limited and National Thermal Power Corporation JV is a company located in India . References ↑ "Karnataka Power Corporation Limited and National Thermal Power Corporation JV" Retrieved from "http://en.openei.org/w/index.php?title=Karnataka_Power_Corporation_Limited_and_National_Thermal_Power_Corporation_JV&oldid=3479

406

Trumping and Power Majorization  

E-Print Network (OSTI)

Majorization is a basic concept in matrix theory that has found applications in numerous settings over the past century. Power majorization is a more specialized notion that has been studied in the theory of inequalities. On the other hand, the trumping relation has recently been considered in quantum information, specifically in entanglement theory. We explore the connections between trumping and power majorization. We prove an analogue of Rado's theorem for power majorization and consider a number of examples.

David W. Kribs; Rajesh Pereira; Sarah Plosker

2012-10-24T23:59:59.000Z

407

Nuclear power browning out  

SciTech Connect

When the sad history of nuclear power is written, April 26, 1986, will be recorded as the day the dream died. The explosion at the Chernobyl plant was a terrible human tragedy- and it delivered a stark verdict on the hope that nuclear power will one day replace fossil fuel-based energy systems. Nuclear advocates may soldier on, but a decade after Chernobyl it is clear that nuclear power is no longer a viable energy option for the twenty-first century.

Flavin, C.; Lenssen, N.

1996-05-01T23:59:59.000Z

408

Power Metering Project  

Energy.gov (U.S. Department of Energy (DOE))

There are many devices around campus that use electricity, but it helps to have an understanding of how much power each type of device uses. With this information, you are better able to focus efforts on reducing power consumption. With basic power data collection and analysis, we can begin to answer questions like: how much money does it cost the school to leave all the computers on at night?

409

Interleaved power converter  

DOE Patents (OSTI)

A power converter architecture interleaves full bridge converters to alleviate thermal management problems in high current applications, and may, for example, double the output power capability while reducing parts count and costs. For example, one phase of a three phase inverter is shared between two transformers, which provide power to a rectifier such as a current doubler rectifier to provide two full bridge DC/DC converters with three rather than four high voltage inverter legs.

Zhu, Lizhi (Canton, MI)

2007-11-13T23:59:59.000Z

410

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Plant Testing of Piperazine Plant Testing of Piperazine (PZ) with High T Regeneration Gary T. Rochelle (PI) & Eric Chen The University of Texas at Austin Katherine Dombrowski (PM), URS Andrew Sexton (TE), Trimeric Bruce Lani, DOE PM 1 Outline * Project overview * Energy Features of the PZ process - A new flash stripper * Solvent management with PZ - Solution analyses from 3 pilot plants * Future work on aerosol formation - A major challenge for volatile amine * PZ, a competitive alternative 2 Project Objectives * Primary: - Quantify robustness of PZ in an integrated system with 150 o C regeneration * Secondary: - Optimize equipment design & energy performance of advanced flash regeneration - Identify & resolve issues with process control, foaming, solids precipitation

411

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

December 2012 December 2012 2 Managed by UT-Battelle for the U.S. Department of Energy ORNL Isotope Infrastructure Science Highlight Goals VERA Snapshot 2.3 * Flexible coupling of physics components * Toolkit of components * Rigorous software processes * Scalable existing and future HPC platforms * Attention to usability * Development guided by relevant challenge problems * Broad applicability * Fundamental focus on V&V and UQ * Baseline industry capability * Common input * New pin-resolved transport * Initial advanced physics coupling Virtual Environment for Reactor Applications (VERA ) milestone release (version 2.3; Rel. 12/19/12) provides significant additional capability A suite of tools for scalable simulation of nuclear reactor core behavior

412

Power Supply Synchronization without Communication  

E-Print Network (OSTI)

as Micro-Grid based Electrical Power Systems ­ MGEPS [2]; and in Parallel Connected Uninterruptible Power

Moehlis, Jeff

413

EIA Electric Power Forms  

Gasoline and Diesel Fuel Update (EIA)

Electric Power Forms Electric Power Forms EIA Electric Power Forms Listing of Publicly Available and Confidential Data EIA's statistical surveys encompass each significant electric supply and demand activity in the United States. Most of the electric power survey forms resulting data elements are published, but respondent confidentiality is required. The chart below shows the data elements for each survey form and how each data element is treated in regard to confidentiality. Data Categories Data collection forms EIA- 411 EIA- 826 EIA- 860 EIA- 860M EIA- 861 EIA- 923 Frame Information Utility identification and iocation -- -- -- -- X -- Plant identification and iocation -- -- -- X -- X Generation and fuel Latitude and longitude -- -- X -- -- --

414

Magnets and Power Supplies  

NLE Websites -- All DOE Office Websites (Extended Search)

Bibliography Up: APS Storage Ring Parameters Previous: Longitudinal Bibliography Up: APS Storage Ring Parameters Previous: Longitudinal bunch profile and Magnets and Power Supplies Dipole Magnets and Power Supplies Value Dipole Number 80+1 No. of power supplies 1 Magnetic length 3.06 m Core length 3.00 m Bending radius 38.9611 m Power supply limit 500.0 A Field at 7 GeV 0.599 T Dipole trim coils Number 80+1 No. of power supplies 80 Magnetic length 3.06 m Core length 3.00 m Power supply limit 20.0 A Maximum field 0.04 T Horizontal Correction Dipoles Number 317 No. of power supplies 317 Magnetic length 0.160 m Core length 0.07 m Power supply limit 150.0 A Maximum field 0.16 T Max. deflection at 7 GeV 1.1 mrad Vertical Corrector Dipoles Number 317 No. of power supplies 317

415

Southwestern Power Administration  

NLE Websites -- All DOE Office Websites (Extended Search)

7 ANNUAL REPORT 7 ANNUAL REPORT Southwestern Power Administration Letter to the Secretary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 About Southwestern. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Accomplishments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Supplementary Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

416

Combined Heat and Power  

Office of Environmental Management (EM)

energy costs and 31 emissions while also providing more resilient and reliable electric power and thermal energy 1 . CHP 32 systems combine the production of heat (for both...

417

SOLAR MARKET POWERS SILICON  

Science Journals Connector (OSTI)

SOLAR MARKET POWERS SILICON ... Polysilicon shortages are boon to manufacturers, bane of solar energy industry ... Solar energy is a relatively new market for polysilicon manufacturers. ...

JEAN-FRA&CCEDIL;NOIS TREMBLAY

2006-10-02T23:59:59.000Z

418

BONNEVILLE POWER ADMINISTRATION  

NLE Websites -- All DOE Office Websites (Extended Search)

Conservation Rate Credit (CRC) - A current funding mechanism that provides a discounted power rate to participating utilities, conditioned on documented expenditures on qualifying...

419

Bonneville Power Administration  

NLE Websites -- All DOE Office Websites (Extended Search)

o Includes option to elect into Shared Rate Plan, if room under limit Bonneville Power Administration 061708 Revision (Original version issued externally April 11, 2008)...

420

Clean Coal Power Initiative  

Energy.gov (U.S. Department of Energy (DOE))

"Clean coal technology" describes a new generation of energy processes that sharply reduce air emissions and other pollutants from coal-burning power plants.

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Wind Power Forecasting  

NLE Websites -- All DOE Office Websites (Extended Search)

Retrospective Reports 2011 Smart Grid Wind Integration Wind Integration Initiatives Wind Power Forecasting Wind Projects Email List Self Supplied Balancing Reserves Dynamic...

422

Balancing of Wind Power.  

E-Print Network (OSTI)

?? In the future, renewable energy share, especially wind power share, in electricity generation is expected to increase. Due to nature of the wind, wind (more)

lker, Muhammed Akif

2011-01-01T23:59:59.000Z

423

Wind Power Forecasting  

Science Journals Connector (OSTI)

The National Center for Atmospheric Research (NCAR) has configured a Wind Power Forecasting System for Xcel Energy that integrates high resolution and ensemble...

Sue Ellen Haupt; William P. Mahoney; Keith Parks

2014-01-01T23:59:59.000Z

424

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

and Characterization (SciChar) Workshop Characterization Capabilities Battery Questions Neutron Advantages * Scattering Power unrelated to Z - Many low Z elements have high cross...

425

Municipal Electric Power (Minnesota)  

Energy.gov (U.S. Department of Energy (DOE))

This section describes energy procurement for local utilities operating in Minnesota and provides a means for Minnesota cities to construct and operate hydroelectric power plants. The statute gives...

426

Southwestern Power Administration  

NLE Websites -- All DOE Office Websites (Extended Search)

Open Access Tariff Standards of Conduct Transmission Planning Open Access Tariff Pursuant to an agreement between Southwestern and Southwest Power Pool, Inc. (SPP), which became...

427

Southwestern Power Administration  

NLE Websites -- All DOE Office Websites (Extended Search)

equipment, and services to support its mission of marketing and delivering Federal hydroelectric power: 1569138161-kV field equipment such as circuit breakers, coupling...

428

Southwestern Power Administration  

NLE Websites -- All DOE Office Websites (Extended Search)

Environment Southwestern's mission of marketing and delivering Federal hydroelectric power fully supports the U.S. Department of Energy's strategic goal of improving...

429

Power System Electrician Construction  

Energy.gov (U.S. Department of Energy (DOE))

Join the Bonneville Power Administration (BPA) for a challenging and rewarding career, while working, living, and playing in the Pacific Northwest states (Washington, Oregon, Montana, Idaho). The...

430

Combined Heat & Power  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

available today." -American Council for an Energy-Efficient Economy What is Combined Heat & Power (CHP)? Federal Utility Partnership Working Group May 7 - 8, 2014 Virginia...

431

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Awards Lab-Level Objectives distinguish PNNL Chemical Imaging of Dynamic Systems Chemical Conversions for Sustainable Energy Efficient and Secure Power Grid Disruption of Illicit...

432

Southwestern Power Administration  

NLE Websites -- All DOE Office Websites (Extended Search)

May 22, 2014 Lake Texoma Hydropower Generation to Remain Low for Near Future TULSA, OK - Southwestern Power Administration (Southwestern) announced today that in response to...

433

Power System Electrician Maintenance  

Energy.gov (U.S. Department of Energy (DOE))

Join the Bonneville Power Administration (BPA) for a challenging and rewarding career, while working, living, and playing in the Pacific Northwest in Custer, Washington. Custer is a designated...

434

Concentrated Solar Thermoelectric Power  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SOLAR POWER PROGRAM REVIEW 2013 Receiver Cavity * Receiver cavity can reduce heat loss from black surface or selective surface 18 With blackbody absorber: With 20%...

435

Northwest, the Bonneville Power  

NLE Websites -- All DOE Office Websites (Extended Search)

by a similar event. Overgrown trees came in contact with high-voltage transmission lines, causing a protective shutdown that created cascading power outages across the...

436

Wide Bandgap Power Electronics  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

- Acquiring new prototype devices. - Building new gate drivers and test set- ups for power switches with fast switching times * Total project funding - DOE 100% * FY08 - 432K *...

437

Power Purchase Agreements  

Energy.gov (U.S. Department of Energy (DOE))

A Power Purchase Agreement (PPA) is a financing structure that enables property owners or tenants, including state and local governments, to realize the benefits of renewable energy generation...

438

Power Purchase Agreement Webinars  

Energy.gov (U.S. Department of Energy (DOE))

Provides a listing of past power purchase agreement webinars and associated files. Author: U. S. Department of Energy, Energy Efficiency & Renewable Energy

439

Solar Power Purchase Agreements  

Energy.gov (U.S. Department of Energy (DOE))

Provides an overview of solar power purchase agreements including how they work, benefits and challenges and eligibility. Author: United States Environmental Protection Agency (EPA)

440

Contemporary Trends power point  

E-Print Network (OSTI)

Power point slides guiding presentation on closing the gap between political acceptability and administrative sustainability as a prerequisite for effective governance. Leadership challenges are described

Nalbandian, John

2013-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Alabama Power- UESC Activities  

Energy.gov (U.S. Department of Energy (DOE))

Presentationgiven at the Fall 2012 Federal Utility Partnership Working Group (FUPWG) meetingdiscusses Alabama Power and its utility energy service contract (UESC) projects and activities.

442

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Market Monitoring Market Monitoring Tools Bernie Lesieutre - LBNL Bob Thomas - Cornell October 18, 2006 Washington, D.C. OE Visualization and Controls Peer Review Market Monitoring Tools: Overview Approach: Use dispatch, profit, revenue/offer price, withholding sensitivities to identify opportunities for local advantage that give some participants market power potential. 2006 Technical Work: Extend prior results to large, RTO-scale systems. Initiate large-scale analysis with RTO (PJM). Evaluate reactive power effects on energy markets. Publication and presentation of results. Market Power: Substitutability Market power boils down to the issue of substitutability Locational Advantage: "Load Pockets" Physical network constraints limit supply to certain loads, so that the incremental demand

443

Power Supply Negotiations  

Energy Savers (EERE)

Southeastern Federal Power Alliance Incremental Decay in Energy March 11, 2014 2 Incremental Decay in Energy Hydropower customers observations from our review of the Buford...

444

Solar power satellites.  

E-Print Network (OSTI)

??During energy crisis at the end of the Sixties, a new idea to exploit solar energy arose: Solar Power Satellites. These satellites need a huge (more)

Palmas, Alessandro

2013-01-01T23:59:59.000Z

445

Power Systems Development Facility. Environmental Assessment  

SciTech Connect

The objective of the PSDF would be to provide a modular facility which would support the development of advanced, pilot-scale, coal-based power systems and hot gas clean-up components. These pilot-scale components would be designed to be large enough so that the results can be related and projected to commercial systems. The facility would use a modular approach to enhance the flexibility and capability for testing; consequently, overall capital and operating costs when compared with stand-alone facilities would be reduced by sharing resources common to different modules. The facility would identify and resolve technical barrier, as well as-provide a structure for long-term testing and performance assessment. It is also intended that the facility would evaluate the operational and performance characteristics of the advanced power systems with both bituminous and subbituminous coals. Five technology-based experimental modules are proposed for the PSDF: (1) an advanced gasifier module, (2) a fuel cell test module, (3) a PFBC module, (4) a combustion gas turbine module, and (5) a module comprised of five hot gas cleanup particulate control devices. The final module, the PCD, would capture coal-derived ash and particles from both the PFBC and advanced gasifier gas streams to provide for overall particulate emission control, as well as to protect the combustion turbine and the fuel cell.

Not Available

1993-06-01T23:59:59.000Z

446

Heber binary-cycle geothermal demonstration power plant: Startup and low-power testing: Special report  

SciTech Connect

In 1974 the geothermal industry recognized the need for binary cycle technology in the development of moderate temperature geothermal resources. The electric utilities further expressed a need to demonstrate the technology on a scale representative of commercial operation in order to resolve issues of performance cost and environmental acceptability, and to confirm the maturity of the technology. In response to the needs, EPRI conducted feasibility studies and a series of field experiments intended to culminate with the construction and demonstration of a nominal 50 MWe binary cycle power plant in cooperation with other interested organizations. The early work by EPRI, the Department of Energy and the San Diego Gas and Electric Company led to the formation of the present multi-sponsored project in late 1980. Construction of the demonstration plant was completed in June 1985 at the Heber geothermal field in the Imperial Valley of Southern California. The plant is rated at 46 MWe and converts the thermal energy from 360 F (182 C) geothermal fluid to electricity. Start-up of the plant was completed in December 1985 and the first extended run at low power was completed in June 1986. The results from this run and other tests associated with the plant and the geothermal production facilities during this period are contained in this report. During this period, the brine supply was lower than expected and the reinjection pressure higher than expected. The power cycle performed essentially as projected for the load levels at which the plant was tested.

Berning, J.; Bigger, J.E.; Fishbaugher, J.

1987-10-01T23:59:59.000Z

447

Green Power Network: News  

NLE Websites -- All DOE Office Websites (Extended Search)

News News TVA Seeks 126 MW of Renewables in 2014 December 2013 More News More News Subscribe to E-Mail Update Subscribe to e-mail update Events EPA Webinar - The Power of Aggregated Purchasing: How to Green Your Electricity Supply & Save Money January 15, 2014 1:00-2:00 p.m. ET Previous Webinars More News Features Green Power Market Status Report (2011 Data) Featured Green Power Reports News Archive Subscribe to Green Power News TVA Seeks 126 MW of Renewables in 2014 The Tennessee Valley Authority (TVA) is increasing the capacity of its renewable energy power purchase programs by 7 peercent over 2013, with a total capacity of 126 megawatts (MW) being offered. The increase in capacity is being spread across two of TVA's three power purchase programs - Green Power Providers, Solar Solutions Initiative, and the Renewable Standard Offer. The Green Power Providers program has 10 MW of available capacity for the development of small-scale solar, wind, biomass and hydro generation systems that are 50 kilowatts (kW) or less. Within the Green Power Providers program TVA has doubled the residential capacity from 2 MW to 4 MW and will be paying all power providers a total of 14¢ per kilowatt-hour (kWh). The Solar Solutions Initiative program, which focuses on installations between 50 kW and 1 MW, has been expanded from 10 MW of capacity to 16 MW and now pays a premium of 6¢/kWh. TVA's third power purchase program, the Renewable Standard Offer continues to have 100 MW of available capacity for projects between 1 MW and 20 MW. Prior to these program expansions TVA's renewables portfolio consisted of 128 MW of operating or committed solar, 1,500 MW of wind, and 60 MW of biomass.

448

The Extended Power Law as Intrinsic Signature For a Black Hole  

E-Print Network (OSTI)

We analyze the exact general relativistic exact integro-differential equation of radiative transfer describing the interaction of low energy photons with a Maxwellian distribution of hot electrons in gravitational field of a Schwarzschild black hole. We prove that due to Comptonization an initial arbitrary spectrum of low energy photons unavoidably results in spectra characterized by an extended power-law feature. We examine the spectral index by using both analytical and numerical methods for a variety of physical parameters as such the plasma temperature and the mass accretion rate. The presence of the event horizon as well as the behaviour of the null geodesics in its vicinity largely determine the dependence of the spectral index on the flow parameters. We come to the conclusion that the bulk motion of a converging flow is more efficient in upscattering photons than thermal Comptonization provided that the electron temperature in the flow is of order of a few keV or less. In this case, the spectrum observed at infinity consists of a soft component produced by those input photons that escape after a few scatterings without any significant energy change and of hard component (described by a power law) produced by the photons that underwent significant upscattering. The luminosity of the power-law component is relatively small compared to that of the soft component. For accretion into black hole the spectral energy index of the power-law is always higher than one for plasma temperature of order of a few keV. This result suggests that the bulk motion Comptonization might be responsible for the power-law spectra seen in the black-hole X-ray sources.

Lev Titarchuk; Thomas Zannias

1997-08-27T23:59:59.000Z

449

Nuclear Power for Italy  

Science Journals Connector (OSTI)

ITALY HAS DECIDED to use British know-how to build its first big nuclear power plant. A.G.I.P. Nucleare, a subsidiary of the Italian government-owned petroleum organization, E.N.I., and Britain's Nuclear Power Plant Co. will sign final agreement next ...

1957-12-02T23:59:59.000Z

450

Nuclear power engineering  

Science Journals Connector (OSTI)

... been easy to write 950 pages of unrelenting tedium. But both volumes of Pedersen's Nuclear Power read like computer printouts, an avalanche of factual information recited in a dogged monotone, ... even the most ingenious intricacy is embalmed lifeless on the page. Indeed both volumes of Nuclear Power read disconcertingly like each other. The first is called ...

Walt Patterson

1979-01-25T23:59:59.000Z

451

Catechism for nuclear power  

Science Journals Connector (OSTI)

... doses of radiation exposure are potentially harmful to people, and should be avoided. -"Nuclear power stations, and the nuclear industry in general, are sources of artificial radiation to which ... general, are sources of artificial radiation to which people may be exposed." Therefore nuclear power stations should not be built."Hither explain in no more than 250 words which ...

1986-07-31T23:59:59.000Z

452

Bonneville Power Administrator Compares  

E-Print Network (OSTI)

Bonneville Power Administrator Compares Missouri Basin Reservoirs with Pacific Northwest's by Pat-16 was the dinner speech of a former Nebraskan from Schuyler, James Jura. Now administrator of the Bonneville Power Administration, Portland, Ore., Jura has been with Bonneville for the past 10 ears. He spoke to the group

Nebraska-Lincoln, University of

453

NUCLEAR POWER in CALIFORNIA  

E-Print Network (OSTI)

NUCLEAR POWER in CALIFORNIA: 2007 STATUS REPORT CALIFORNIA ENERGY COMMISSION October 2007 CEC-100, California Contract No. 700-05-002 Prepared For: California Energy Commission Barbara Byron, Senior Nuclear public workshops on nuclear power. The Integrated Energy Policy Report Committee, led by Commissioners

454

Atomic Power in Japan  

Science Journals Connector (OSTI)

NUCLEAR ENERGY will provide most of the power requirements in Japan by the end of this century. So predicts Charles H. Weaver, vice president in charge of atomic power activities for Westinghouse Electric.Addressing the Conference on Peaceful Uses of ...

1957-05-27T23:59:59.000Z

455

SPOTLIGHT ON NUCLEAR POWER  

Science Journals Connector (OSTI)

SPOTLIGHT ON NUCLEAR POWER ... TOUGHER RULES are needed to improve the safety of U.S. nuclear power facilities and to better protect the public from the type of disaster that occurred this spring at Japans Fukushima Daiichi nuclear energy plant, says a preliminary report released by the Nuclear Regulatory Commission (NRC) on July 12. ...

GLENN HESS

2011-07-18T23:59:59.000Z

456

World Power Conference  

Science Journals Connector (OSTI)

... A TWO-DAY meeting of the International Executive Council of the World Power Conference has been held at Stockholm. Nineteen countries were represented : Australia, Austria, Belgium, ... of the International Executive Council and of the British National Committee of the World Power Conference, who presided ; Mr. Harold Hobson, vice-chairman of the British National Committee ...

1948-06-26T23:59:59.000Z

457

World Power Conference  

Science Journals Connector (OSTI)

... THE theme of the Canadian Sectional Meeting of the World Power Conference, to be held in Montreal during September 7-11, 1958, will be "Economic ... other application forms, can be obtained from the Secretary, British National Committee, World Power Conference, 201 Grand Buildings, Trafalgar Square, London, W.C.2. At the meeting ...

1958-05-03T23:59:59.000Z

458

Opposite power series  

Science Journals Connector (OSTI)

In order to analyze the singularities of a power series function P(t) on the boundary of its convergent disc, we introduced the space @W(P) of opposite power series in the opposite variable s=1/t, where P(t) was, mainly, the growth function (Poincare ...

Kyoji Saito

2012-10-01T23:59:59.000Z

459

Underground Power Cables  

Science Journals Connector (OSTI)

...1973 research-article Underground Power Cables J. D. Endacott Up to the present, effectively...particular, in recent years, the oil-filled cable system using cellulose paper impregnated...design of supertension underground power cable systems are considered. The limitations...

1973-01-01T23:59:59.000Z

460

BPA Power Generation (pbl/main)  

NLE Websites -- All DOE Office Websites (Extended Search)

Generation Hydro Power Wind Power Monthly GSP BPA White Book Dry Year Tools Firstgov Power Generation Hydro Power Federal Columbia River Power System (FCRPS) Hydro Projects FCRPS...

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Power, Media & Montesquieu. New forms of public power and the balance of power  

E-Print Network (OSTI)

SUMMARY Power, Media & Montesquieu. New forms of public power and the balance of power are organized it is crucial to restrain the power that the state exerts on its citizens. The state has three functions, commonly known as powers: the legislative, executive and judicial powers. This three

van den Brink, Jeroen

462

EIA - Electric Power Data  

U.S. Energy Information Administration (EIA) Indexed Site

Survey-level Detail Data Files Survey-level Detail Data Files Electric power data are collected on survey instruments. Data collection is mandated by Congress to promote sound policymaking, efficient markets, and public understanding. The most widely used data are disseminated in reports, such as the Electric Power Monthly and the Electric Power Annual. Publicly available electric power data is available down to the plant level in the Electricity Data Browser and in detailed spreadsheets by survey below. Description Data availability State-level data (consolidated across forms) Contains electricity generation; fuel consumption; emissions; retail sales, revenue, number of customers, and retail prices; generating capacity; and financial data. 1990-2012 (monthly and annual) Electric power sales and revenue data - monthly (Form EIA-826)

463

Green Power Network: Publications  

NLE Websites -- All DOE Office Websites (Extended Search)

News News TVA Seeks 126 MW of Renewables in 2014 December 2013 More News More News Subscribe to E-Mail Update Subscribe to e-mail update Events EPA Webinar - The Power of Aggregated Purchasing: How to Green Your Electricity Supply & Save Money January 15, 2014 1:00-2:00 p.m. ET Previous Webinars More News Features Green Power Market Status Report (2011 Data) Featured Green Power Reports Publications Alphabetical Listing Categorical Listing Chronological Listing Featured Reports The Green Power Network library contains articles and reports on green power, green pricing, and related topics. Whenever possible, we provide a link to publications available online. The publications are grouped by the following topics to help you in your search. If you are aware of other documents that should be added to this list, please notify our Webmaster.

464

Introduction to MEAG Power  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Introduction to MEAG Power Introduction to MEAG Power Southeastern Federal Power Alliance Meeting October 9, 2013 Municipal Electric Authority of Georgia ■ Joint Action Agency ─ Formed in 1975 ─ Owns and operates electric generation and transmission facilities ─ Provides bulk electric power to 48 cities and 1 county in the State of Georgia ■ All 49 Participants have reaffirmed 50-year power sales extensions ■ Take-or-pay contracts with participants are court validated contracts with a General Obligation pledge from each city ■ Generation ownership interest in 10 generating units and a transmission system ─ 2,069 MW generating capacity online ─ 500 MW Plant Vogtle Units 3 & 4 under development ■ Schedules the output from the SEPA contracts for the 49 members

465

Western Area Power Administration  

NLE Websites -- All DOE Office Websites (Extended Search)

Loveland Area Projects November 29-30, 2011 2 Agenda * Overview of Western Area Power Administration * Post-1989 Loveland Area Projects (LAP) Marketing Plan * Energy Planning and Management Program * Development of the 2025 PMI Proposal * 2025 PMI Proposal * 2025 PMI Comment Period & Proposal Information * Questions 3 Overview of Western Area Power Administration (Western) * One of four power marketing administrations within the Department of Energy * Mission: Market and deliver reliable, renewable, cost-based Federal hydroelectric power and related services within a 15-state region of the central and western U.S. * Vision: Provide premier power marketing and transmission services Rocky Mountain Region (RMR) is one of five regional offices 4 Rocky Mountain Region

466

Wind Powering America  

Wind Powering America (EERE)

These news items are notable additions These news items are notable additions to the Wind Powering America Web site. The Wind Powering America Web site reports recent national and state wind market changes by cataloging wind activities such as wind resource maps, small wind consumer's guides, local wind workshops, news articles, and publications in the areas of policy, public power, small wind, Native Americans, agricultural sector, economic development, public lands, and schools. en-us julie.jones@nrel.gov (Julie Jones) http://www.windpoweringamerica.gov/images/wpa_logo_sm.jpg Wind Powering America http://www.windpoweringamerica.gov/ Nominate an Electric Cooperative for Wind Power Leadership Award by January 15 http://www.windpoweringamerica.gov/filter_detail.asp?itemid=4076 http://www.windpoweringamerica.gov/filter_detail.asp?itemid=4076 Mon, 16

467

Fuel Cell Portable Power  

NLE Websites -- All DOE Office Websites (Extended Search)

Power Power Department of Energy Workshop January 17, 2002 2 Portable Markets - Table of Contents 1. Opportunity Summary for Portable Markets 2. Commercialization Path and Resource Map 3. Value Chain Issues 4. Ballard "State of the Art" 5. Fuel Options and Issues 6. Where can the D.O.E. Help 3 Opportunity Summary - Portable Markets Infrequent Frequent Typical Applications Backup - Batteries & Gensets Peaking power and seasonal use; mobile power Preferred Fuels Hydrocarbon & Hydrogen Hydrocarbon (H2?) Total Available Market Large - But Fractured into many apps Moderate Price Target Low (Pockets willing to pay high $ for certain attributes) Moderate (Lifecycle) Environmental Impact Low Moderate Timing Short term Mid term 4 Technical Challenge Low High Micro Markets H2 Backup Power HC Frequent

468

Power module assembly  

DOE Patents (OSTI)

A power module assembly of the type suitable for deployment in a vehicular power inverter, wherein the power inverter has a grounded chassis, is provided. The power module assembly comprises a conductive base layer electrically coupled to the chassis, an insulating layer disposed on the conductive base layer, a first conductive node disposed on the insulating layer, a second conductive node disposed on the insulating layer, wherein the first and second conductive nodes are electrically isolated from each other. The power module assembly also comprises a first capacitor having a first electrode electrically connected to the conductive base layer, and a second electrode electrically connected to the first conductive node, and further comprises a second capacitor having a first electrode electrically connected to the conductive base layer, and a second electrode electrically connected to the second conductive node.

Campbell, Jeremy B. (Torrance, CA); Newson, Steve (Redondo Beach, CA)

2011-11-15T23:59:59.000Z

469

Re-Examining first principles of regulation: NRG power marketing, LLC v. Maine public utilities Commission  

SciTech Connect

Maine PUC and Morgan Stanley have resolved some of the key issues facing the energy industry. The Supreme Court has plainly and directly in both cases reaffirmed the central role that private contracts play in the energy industry and set terms to balance the need to secure long-term investment with the public interest that lies at the heart of the Federal Power Act. (author)

Haskell, Mark R.

2010-03-15T23:59:59.000Z

470

NETL: Water-Energy Interface - Power Plant Water Management  

NLE Websites -- All DOE Office Websites (Extended Search)

Improved Performance of an Air Cooled Condenser (ACC) Using SPX Wind Guide Technology Improved Performance of an Air Cooled Condenser (ACC) Using SPX Wind Guide Technology SPX Cooling Technologies is developing physical enhancements for air cooled condensers (ACC) to improve fan airflow in windy conditions. By removing cross-wind effects on ACC fans, the SPX wind guides will increase ACC performance, thereby increasing the overall efficiency of the power plant. This project will add wind guides to an existing ACC cooling process at a selected coal-fired power plant in order to quantify the efficiency improvement. SPX Cooling Technologies will also employ computational fluid dynamic modeling to examine and conduct a pilot-scale test to resolve application and optimization issues and determine the effectiveness of the wind guide technology.

471

Simulated coal gas MCFC power plant system verification. Final report  

SciTech Connect

The objective of the main project is to identify the current developmental status of MCFC systems and address those technical issues that need to be resolved to move the technology from its current status to the demonstration stage in the shortest possible time. The specific objectives are separated into five major tasks as follows: Stack research; Power plant development; Test facilities development; Manufacturing facilities development; and Commercialization. This Final Report discusses the M-C power Corporation effort which is part of a general program for the development of commercial MCFC systems. This final report covers the entire subject of the Unocal 250-cell stack. Certain project activities have been funded by organizations other than DOE and are included in this report to provide a comprehensive overview of the work accomplished.

NONE

1998-07-30T23:59:59.000Z

472

Enel Green Power- Innovative Geothermal Power for Nevada | Open Energy  

Open Energy Info (EERE)

Enel Green Power- Innovative Geothermal Power for Nevada Enel Green Power- Innovative Geothermal Power for Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library Periodical: Enel Green Power- Innovative Geothermal Power for Nevada Abstract Two binary geothermal power plants inaugurated today with a total capacity of 65 MW: They will generate enough energy to meet the needs of some 40 thousand American households. Author Hank Sennott Published Press Release, 04/15/2009 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Enel Green Power- Innovative Geothermal Power for Nevada Citation Hank Sennott. 04/15/2009. Enel Green Power- Innovative Geothermal Power for Nevada. Press Release. 1-2. Retrieved from "http://en.openei.org/w/index.php?title=Enel_Green_Power-_Innovative_Geothermal_Power_for_Nevada&oldid=680547"

473

Angle-resolved photoemission spectroscopy study of HgBa[subscript 2]CuO[subscript 4+?  

E-Print Network (OSTI)

HgBa[subscript 2]CuO[subscript 4+?]. (Hg1201) has been shown to be a model cuprate for scattering, optical, and transport experiments, but angle-resolved photoemission spectroscopy (ARPES) data are still lacking owing to ...

Chan, M. K.

474

Resolved Turbulence Characteristics in Large-Eddy Simulations Nested within Mesoscale Simulations Using the Weather Research and Forecasting Model  

Science Journals Connector (OSTI)

One-way concurrent nesting within the Weather Research and Forecasting Model (WRF) is examined for conducting large-eddy simulations (LES) nested within mesoscale simulations. Wind speed, spectra, and resolved turbulent stresses and turbulence ...

Jeff Mirocha; Branko Kosovi?; Gokhan Kirkil

2014-02-01T23:59:59.000Z

475

Power Consumption Prediction and Power-Aware Packing in Consolidated  

E-Print Network (OSTI)

Power Consumption Prediction and Power-Aware Packing in Consolidated Environments Jeonghwan Choi the power consumption of groups of colocated applications. Such characterization is crucial for effective prediction and enforcement of appropriate limits on power consumption--power budgets--within the data center

Urgaonkar, Bhuvan

476

Reducing Power Load Fluctuations on Ships Using Power Redistribution Control  

E-Print Network (OSTI)

is supplied from generators driven by diesel en- gines, gas engines, and/or gas/steam turbines. In a powerReducing Power Load Fluctuations on Ships Using Power Redistribution Control Damir Radan,1 Asgeir J generated by consumers operating in marine power systems is proposed. The controller redistributes the power

Johansen, Tor Arne

477

Improved Refractories for IGCC Power Systems  

SciTech Connect

The gasification of coal, petroleum residuals, and biomass provides the opportunity to produce energy more efficiently, and with significantly less environmental impact, than more-conventional combustion-based processes. In addition, the synthesis gas that is the product of the gasification process offers the gasifier operator the option of ''polygeneration'', i.e., the production of alternative products instead of power should it be economically favorable to do so. Because of these advantages, gasification is a key element in the U.S. Department of Energy?s Vision 21 power system. However, issues with both the reliability and the economics of gasifier operation will have to be resolved before gasification will be widely adopted by the power industry. Central to both increased reliability and economics is the development of materials with longer service lives in gasifier systems that can provide extended periods of continuous gasifier operation. The focus of the Advanced Refractories for Gasification project at the Albany Research Center is to develop improved materials capable of withstanding the harsh, high-temperature environment created by the gasification reaction, and includes both the refractory lining that insulates the slagging gasifier, as well as the thermocouple assemblies that are utilized to monitor gasifier operating temperatures. Current generation refractory liners in slagging gasifiers are typically replaced every 10 to 18 months, at costs ranging up to $2,000,000. Compounding materials and installation costs are the lost-opportunity costs for the three to four weeks that the gasifier is off-line for the refractory exchange. Current generation thermocouple devices rarely survive the gasifier start-up process, leaving the operator with no real means of temperature measurement during gasifier operation. As a result, the goals of this project include the development of a refractory liner with a service life at least double that of current generation refractory materials, and the design of a thermocouple protection system that will allow accurate temperature monitoring for extended periods of time.

Dogan, Cynthia P.; Kwong, Kyei-Sing; Bennett, James P.; Chinn, Richard E.; Dahlin, Cheryl L.

2002-01-01T23:59:59.000Z

478

Aerosol nucleation in coal-fired power-plant plumes  

Science Journals Connector (OSTI)

New-particle nucleation within coal-fired power-plant plumes can have large effects on particle number concentrations particularly near source regions with implications for human health and climate. In order to resolve the formation and growth of particles in these plumes we have integrated TwO-Moment Aerosol Sectional (TOMAS) microphysics in the System for Atmospheric Modelling (SAM) a large-eddy simulation/cloud-resolving model (LES/CRM). We have evaluated this model against aircraft observations for three case studies and the model reproduces well the major features of each case. Using this model we have shown that meteorology and background aerosol concentrations can have strong effects on new-particle formation and growth in coal-fired power-plant plumes even if emissions are held constant. We subsequently used the model to evaluate the effects of SO 2 and NOx pollution controls on newparticle formation in coal-fired power-plant plumes. We found that strong reductions in NOx emissions without concurrent reductions in SO 2 emissions may increase new-particle formation due to increases in OH formation within the plume. We predicted the change in new-particle formation due to changes in emissions between 1997 and 2010 for 330 coal-fired power plants in the US and we found a median decrease of 19% in new-particle formation. However the magnitude and sign of the aerosol changes depend greatly on the relative reductions in NOx and SO 2 emissions in each plant. More extensive plume measurements for a range of emissions of SO 2 and NOx and in varying background aerosol conditions are needed however to better quantify these effects.

2013-01-01T23:59:59.000Z

479

Wind power generating system  

SciTech Connect

Normally feathered propeller blades of a wind power generating system unfeather in response to the actuation of a power cylinder that responds to actuating signals. Once operational, the propellers generate power over a large range of wind velocities. A maximum power generation design point signals a feather response of the propellers so that once the design point is reached no increase in power results, but the system still generates power. At wind speeds below this maximum point, propeller speed and power output optimize to preset values. The propellers drive a positive displacement pump that in turn drives a positive displacement motor of the swash plate type. The displacement of the motor varies depending on the load on the system, with increasing displacement resulting in increasing propeller speeds, and the converse. In the event of dangerous but not clandestine problems developing in the system, a control circuit dumps hydraulic pressure from the unfeathering cylinder resulting in a predetermined, lower operating pressure produced by the pump. In the event that a problem of potentially cladestine consequence arises, the propeller unfeathering cylinder immediately unloads. Upon startup, a bypass around the motor is blocked, applying a pressure across the motor. The motor drives the generator until the generator reaches a predetermined speed whereupon the generator is placed in circuit with a utility grid and permitted to motor up to synchronous speed.

Schachle, Ch.; Schachle, E. C.; Schachle, J. R.; Schachle, P. J.

1985-03-12T23:59:59.000Z

480

Electric power annual 1992  

SciTech Connect

The Electric Power Annual presents a summary of electric utility statistics at national, regional and State levels. The objective of the publication is to provide industry decisionmakers, government policymakers, analysts and the general public with historical data that may be used in understanding US electricity markets. The Electric Power Annual is prepared by the Survey Management Division; Office of Coal, Nuclear, Electric and Alternate Fuels; Energy Information Administration (EIA); US Department of Energy. ``The US Electric Power Industry at a Glance`` section presents a profile of the electric power industry ownership and performance, and a review of key statistics for the year. Subsequent sections present data on generating capability, including proposed capability additions; net generation; fossil-fuel statistics; retail sales; revenue; financial statistics; environmental statistics; electric power transactions; demand-side management; and nonutility power producers. In addition, the appendices provide supplemental data on major disturbances and unusual occurrences in US electricity power systems. Each section contains related text and tables and refers the reader to the appropriate publication that contains more detailed data on the subject matter. Monetary values in this publication are expressed in nominal terms.

Not Available

1994-01-06T23:59:59.000Z

Note: This page contains sample records for the topic "kev resolving power" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Size-Resolved Particle Number and Volume Emission Factors for On-Road  

NLE Websites -- All DOE Office Websites (Extended Search)

Size-Resolved Particle Number and Volume Emission Factors for On-Road Size-Resolved Particle Number and Volume Emission Factors for On-Road Gasoline and Diesel Motor Vehicles Title Size-Resolved Particle Number and Volume Emission Factors for On-Road Gasoline and Diesel Motor Vehicles Publication Type Journal Article Year of Publication 2009 Authors Ban-Weiss, George, Melissa M. Lunden, Thomas W. Kirchstetter, and Robert A. Harley Journal Journal of Aerosol Science Keywords emission, motor vehicle, particle number, size distribution, tunnel Abstract Average particle number concentrations and size distributions from ~61 000 light-duty (LD) vehicles and ~2500 medium-duty (MD) and heavy-duty (HD) trucks were measured during the summer of 2006 in a San Francisco Bay area traffic tunnel. One of the traffic bores contained only LD vehicles, and the other contained mixed traffic, allowing pollutants to be apportioned between LD vehicles and diesel trucks. Particle number emission factors (particle diameter Dp > 3 nm) were found to be (3.9 ± 1.4) x 1014 and (3.3 ± 1.3) x 1015 # kg-1 fuel burned for LD vehicles and diesel trucks, respectively. Size distribution measurements showed that diesel trucks emitted at least an order of magnitude more particles for all measured sizes (10 < Dp < 290 nm) per unit mass of fuel burned. The relative importance of LD vehicles as a source of particles increased as Dp decreased. Comparing the results from this study to previous measurements at the same site showed that particle number emission factors have decreased for both LD vehicles and diesel trucks since 1997. Integrating size distributions with a volume weighting

482

Power Economic Analysis  

NLE Websites -- All DOE Office Websites (Extended Search)

CRSP Management Center CRSP Management Center Western Area Power Administration January 2011 Power Economic Analysis of Operational Restrictions at Glen Canyon Dam In February, 1997, the operating criteria for Glen Canyon Dam were changed. Operation was restricted to a Modified Low Fluctuating Flow as described in the Operation of Glen Canyon Dam, Colorado River Storage Project, Arizona, Final Environmental Impact Statement, March, 1995. These restrictions reduced the operating flexibility of the hydroelectric power plant and therefore the economic value of the electricity it produced. The Environmental Impact Statement provided impact information to support the Record of Decision governing dam operations. The impact

483

Spatially Resolved Mapping of Disorder Type and Distribution in Random Systems using Artificial Neural Network Recognition  

SciTech Connect

The spatial variability of the polarization dynamics in thin film ferroelectric capacitors was probed by recognition analysis of spatially-resolved spectroscopic data. Switching spectroscopy piezoresponse force microscopy was used to measure local hysteresis loops and map them on a 2D random-bond, random-field Ising model. A neural-network based recognition approach was utilized to analyze the hysteresis loops and their spatial variability. Strong variability is observed in the polarization dynamics around macroscopic cracks due to the modified local elastic and electric boundary conditions, with most pronounced effect on the length scale of ~100 nm away from the crack.

Jesse, Stephen [ORNL; Kalinin, Sergei V [ORNL; Kumar, Amit [ORNL; Ovchinnikov, Oleg S [ORNL; Guo, Senli [ORNL; Griggio, Flavio [ORNL; Trolier-Mckinstry, Susan E [ORNL

2011-01-01T23:59:59.000Z

484

Determination of Interbilayer and Transbilayer Lipid Transfers by Time-Resolved Small-Angle Neutron Scattering  

SciTech Connect

We applied a time-resolved small-angle neutron scattering technique to the vesicle system of dimyristoylphosphatidylcholine for the first time to determine lipid kinetics. The observed kinetics could be explicitly represented by a simple model that includes two independent kinetic parameters, i.e., the rates of transbilayer and interbilayer exchange. This technique is perfectly suited for the determination of lipid exchange kinetics in equilibrium and applicable to evaluation of the activity of the factors relevant to lipid migration, such as translocase and lipid transfer proteins.

Nakano, Minoru; Fukuda, Masakazu; Kudo, Takayuki; Handa, Tetsurou [Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto 606-8501 (Japan); Endo, Hitoshi [Institute for Solid State Physics, The University of Tokyo, Tokai, 319-1106 (Japan)

2007-06-08T23:59:59.000Z

485

Rotationally resolved Fano effect of HI molecules: An experimental study using coherent vacuum-ultraviolet radiation  

Science Journals Connector (OSTI)

An experiment studying the influence of molecular rotation in HI on photoelectron-spin polarization is presented. The experiment is highly wavelength selective since a laser-based vacuum-ultraviolet-radiation source with a bandwidth of 0.510-4 nm is applied to produce circularly polarized light. Although in the Fano effect the kinetic energy of the photoelectrons is not analyzed, rotational structure is resolved via narrow-band excitation of autoionization resonances. The photoelectron-spin polarization is found to be strongly affected by the rotational substructure, leading to changes in both magnitude and sign for different rotational lines.

T. Huth-Fehre; A. Mank; M. Drescher; N. Bwering; U. Heinzmann

1990-01-22T23:59:59.000Z

486

Time-resolved photoelectron spectroscopy of coupled electron-nuclear motion  

SciTech Connect

We investigate pump-probe electron detachment spectroscopy in a model system which is ideally suited to study coupled electronic and nuclear wave-packet dynamics. Time-resolved photoelectron spectra are calculated within the adiabatic approximation and a discretization of the detachment continuum. These spectra are compared to those which derive from a non-Born-Oppenheimer description and a numerically exact treatment of the detachment process. In this way it is possible to identify the influence of non-adiabatic effects on the spectra in a systematic way and also to test commonly applied approximations.

Falge, Mirjam; Engel, Volker [Institut fuer Physikalische und Theoretische Chemie and Roentgen Research Center for Complex Material Systems, Universitaet Wuerzburg, Am Hubland, 97074 Wuerzburg (Germany); Graefe, Stefanie [Institute for Theoretical Physics, Vienna University of Technology, Wiedner Hauptstr. 8-10, A-1040 Vienna (Austria)

2011-05-14T23:59:59.000Z

487

Phase-Resolved Measurements of Ion Velocity in a Radio-Frequency Sheath  

SciTech Connect

The time-dependent argon-ion velocity distribution function above and within the plasma sheath of an rf-biased substrate has been measured using laser-induced fluorescence in a commercial plasma processing tool. Discharge parameters were such that the 2.2 MHz rf-bias period was on the order of the ion transit time through the sheath ({tau}{sub ion}/{tau}{sub rf}=0.3). This work embodies the first time-resolved measurement of ion velocity distribution functions within an rf-biased sheath over a large area (30 cm diameter) silicon wafer substrate.

Jacobs, Brett; Gekelman, Walter; Pribyl, Pat [Department of Physics and Astronomy, University of California--Los Angeles, Los Angeles, California 90024 (United States); Barnes, Michael [MS Barnes Engineering, San Ramon, California 94583 (United States)

2010-08-13T23:59:59.000Z

488

Time-resolved energy transfer from single chloride-terminated nanocrystals to graphene  

SciTech Connect

We examine the time-resolved resonance energy transfer of excitons from single n-butyl amine-bound, chloride-terminated nanocrystals to two-dimensional graphene through time-correlated single photon counting. The radiative biexponential lifetime kinetics and blinking statistics of the individual surface-modified nanocrystal elucidate the non-radiative decay channels. Blinking modification as well as a 4 reduction in spontaneous emission were observed with the short chloride and n-butylamine ligands, probing the energy transfer pathways for the development of graphene-nanocrystal nanophotonic devices.

Ajayi, O. A., E-mail: oaa2114@columbia.edu, E-mail: cww2104@columbia.edu; Wong, C. W., E-mail: oaa2114@columbia.edu, E-mail: cww2104@columbia.edu [Optical Nanostructures Laboratory, Center for Integrated Science and Engineering, Solid-State Science and Engineering, Columbia University, New York, New York 10027 (United States); Department of Mechanical Engineering, Columbia University, New York, New York 10027 (United States); Anderson, N. C.; Wolcott, A.; Owen, J. S. [Department of Chemistry, Columbia University, New York, New York 10027 (United States); Cotlet, M. [Brookhaven National Laboratory, Upton, New York, New York 11973 (United States); Petrone, N.; Hone, J. [Department of Mechanical Engineering, Columbia University, New York, New York 10027 (United States); Gu, T.; Gesuele, F. [Optical Nanostructures Laboratory, Center for Integrated Science and Engineering, Solid-State Science and Engineering, Columbia University, New York, New York 10027 (United States)

2014-04-28T23:59:59.000Z

489

Probing higher order correlations of the photon field with photon number resolving avalanche photodiodes  

E-Print Network (OSTI)

We demonstrate the use of two high speed avalanche photodiodes in exploring higher order photon correlations. By employing the photon number resolving capability of the photodiodes the response to higher order photon coincidences can be measured. As an example we show experimentally the sensitivity to higher order correlations for three types of photon sources with distinct photon statistics. This higher order correlation technique could be used as a low cost and compact tool for quantifying the degree of correlation of photon sources employed in quantum information science.

J. F. Dynes; Z. L. Yuan; A. W. Sharpe; O. Thomas; A. J. Shields

2011-07-15T23:59:59.000Z

490

Quantum random-number generator based on a photon-number-resolving detector  

Science Journals Connector (OSTI)

We demonstrated a high-efficiency quantum random number generator which takes inherent advantage of the photon number distribution randomness of a coherent light source. This scheme was realized by comparing the photon flux of consecutive pulses with a photon number resolving detector. The random bit generation rate could reach 2.4 MHz with a system clock of 6.0 MHz, corresponding to a random bit generation efficiency as high as 40%. The random number files passed all the stringent statistical tests.

Min Ren; E Wu; Yan Liang; Yi Jian; Guang Wu; Heping Zeng

2011-02-23T23:59:59.000Z

491

Time Resolved Collapse of a Folding Protein Observed with Small Angle X-Ray Scattering  

SciTech Connect

High-intensity, ''pink'' beam from an undulator was used in conjunction with microfabricated rapid-fluid mixing devices to monitor the early events in protein folding with time resolved small angle x-ray scattering. This Letter describes recent work on the protein bovine {beta} -lactoglobulin where collapse from an expanded to a compact set of states was directly observed on the millisecond time scale. The role of chain collapse, one of the initial stages of protein folding, is not currently understood. The characterization of transient, compact states is vital in assessing the validity of theories and models of the folding process.

Pollack, L.; Tate, M. W.; Finnefrock, A. C.; Kalidas, C.; Trotter, S.; Darnton, N. C.; Lurio, L.; Austin, R. H.; Batt, C. A.; Gruner, S. M. (and others)

2001-05-21T23:59:59.000Z

492

Time-Resolved Molecular Frame Dynamics of Fixed-in-Space CS2 Molecules  

SciTech Connect

Random orientation of molecules within a sample leads to blurred observationsof chemical reactions studied from the laboratory perspective. Methodsdeveloped for the dynamic imaging of molecular structures and processesstruggle with this, as measurements are optimally made in the molecular frame.Here we uselaser alignment to transiently fix CS2 molecules in space longenough to elucidate, in the molecular reference frame, details of ultrafast electronic vibrationaldynamics during a photochemical reaction. These three-dimensional photoelectron imaging results, combined with ongoing efforts in molecular alignment and orientation, presage a wide range of insights obtainable fromtime-resolved studies in the molecular frame.

Bisgaard, Christer; Clarkin, Owen; Wu, Guorong; Lee, Anthony; Gessner, Oliver; Hayden, Carl; Stolow, Albert

2009-04-02T23:59:59.000Z

493

A synchronized emissive probe for time-resolved plasma potential measurements of pulsed discharges  

E-Print Network (OSTI)

power so its emission nearly matched the spectrum of an Oceanpowers. The measurement was made using a spectrometer for the visible spectral range (Ocean

Sanders, Jason M.

2014-01-01T23:59:59.000Z

494

POWER CENTRALIZED SEMIGROUPS PRIMOZ MORAVEC  

E-Print Network (OSTI)

POWER CENTRALIZED SEMIGROUPS PRIMOZ MORAVEC Abstract. A semigroup is said to be power centralized if for every pair of elements x and y there exists a power of x commuting with y. The structure of power centralized groups and semigroups is investigated. In particular, we characterize 0-simple power centralized

495

Power System Operation with Large Penetrations of Wind Power  

Science Journals Connector (OSTI)

The characteristics of wind power result in unique challenges for system operators when integrating large penetrations of wind generation into power systems. This chapter discusses some of the power system ope...

Eleanor Denny

2013-01-01T23:59:59.000Z

496

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

of State Governments of State Governments Northeast High Level Radioactive Waste Transportation Task Force U.S. Department of Energy Transportation External Coordination Working Group Meeting April 21-23, 2004 Dr. Edward Wilds, Jr. Co-Chair, NE Task Force Organization: The Northeast High Level Radioactive Waste Transportation Task Force: Composed of representatives appointed by the Governor of each member state within the northeast region Establishes subcommittees as necessary to complete work projects and to analyze specific transportation issues (such as the WIPP Rail PIG working group) Representation on the TEC topic groups and attend TEC and other DOE meetings Role Meet twice a year to discuss and resolve regional issues related to DOE transportation activities

497

Solutions for Summer Electric Power Shortages: Demand Response andits Applications in Air Conditioning and Refrigerating Systems  

SciTech Connect

Demand response (DR) is an effective tool which resolves inconsistencies between electric power supply and demand. It further provides a reliable and credible resource that ensures stable and economical operation of the power grid. This paper introduces systematic definitions for DR and demand side management, along with operational differences between these two methods. A classification is provided for DR programs, and various DR strategies are provided for application in air conditioning and refrigerating systems. The reliability of DR is demonstrated through discussion of successful overseas examples. Finally, suggestions as to the implementation of demand response in China are provided.

Han, Junqiao; Piette, Mary Ann

2007-11-30T23:59:59.000Z

498

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Electrochemical Membrane for CO 2 Capture and Power Generation DE-FE0007634 Hossein Ghezel-Ayagh FuelCell Energy, Inc. 2013 NETL CO 2 Capture Technology Meeting July 10, 2013 Pittsburgh, PA FuelCell Energy, Inc. 1.4 MW plant at a municipal building 2.4 MW plant owned by an Independent power producer 600 kW plant at a food processor 11.2 MW plant - largest fuel cell park in the world Delivering ultra-clean baseload distributed generation globally Premier developer of stationary fuel cell products, with >40 years of experience Headquarters in Danbury, CT (USA), international presence in USA, Canada, Germany (Fraunhofer, IKTS) and South Korea (Posco) Delivering Direct FuelCell ® (DFC ® ) power plants for On-Site Power and Utility Grid

499

PowerPoint Presentation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

APPA and Federal Hydropower APPA and Federal Hydropower Will Coffman Senior Government Relations Representative American Public Power Association Atlanta, Georgia Oct. 20, 2013 Overview * APPA, the American Public Power Association (APPA): trade association for the more than 2,000 community-owned, not-for- profit electric utilities providing service to 47 mil Americans in 49 states. Many of our members purchase power from Corps projects - Approx. 1,200 public power systems and rural electric cooperatives in 33 states. * We, along with NRECA, advocate for federal hydro customers in Congress and with the Administration Areas of Advocacy 1. Congress - Provide background on PMA customer issues to Committees of jurisdiction * Senate: Energy and Natural Resources * House: Natural Resources

500

SOUTHWESTERN POWER ADMINISTRATION  

NLE Websites -- All DOE Office Websites (Extended Search)

01 01 SOUTHWESTERN POWER ADMINISTRATION CATEGORICAL EXCLUSION (CX) DETERMINATION BRIEF DESCRIPTION OF PROPOSED ACTION: Hydroelectric Power Rate Increase for the Integrated System of Hydropower Projects. PROPOSED BY: Southwestern Power Administration. NUMBER AND TITLE OF THE CATEGORICAL EXCLUSION BEING APPLIED: ( 10 CFR 1021, Appendix B to Subpart D, 1-1-03 Edition, Part B4.3 - Electric power marketing rate changes. REGULATORY REQUIREMENTS IN 10 CFR 1021.410(B): (1) The proposed action fits within a class of actions that is listed in Appendix, A or B to Subpart D. (2) There are no extraordinary circumstances related to the proposal that may affect the Significance of the environmental effects of the proposal; and (3) The proposal is not "connected" to other actions with potentially significant impacts, is not related to