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1

Glossary Term - Electron Capture  

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

Electron Electron Previous Term (Electron) Glossary Main Index Next Term (Electron Volt (eV)) Electron Volt (eV) Electron Capture After electron capture, an atom contains one less proton and one more neutron. Electron capture is one process that unstable atoms can use to become more stable. During electron capture, an electron in an atom's inner shell is drawn into the nucleus where it combines with a proton, forming a neutron and a neutrino. The neutrino is ejected from the atom's nucleus. Since an atom loses a proton during electron capture, it changes from one element to another. For example, after undergoing electron capture, an atom of carbon (with 6 protons) becomes an atom of boron (with 5 protons). Although the numbers of protons and neutrons in an atom's nucleus change

2

Environment assisted electron capture  

E-Print Network (OSTI)

Electron capture by {\\it isolated} atoms and ions proceeds by photorecombination. In this process a species captures a free electron by emitting a photon which carries away the excess energy. It is shown here that in the presence of an {\\it environment} a competing non-radiative electron capture process can take place due to long range electron correlation. In this interatomic (intermolecular) process the excess energy is transferred to neighboring species. The asymptotic expression for the cross section of this process is derived. We demonstrate by explicit examples that under realizable conditions the cross section of this interatomic process can clearly dominate that of photorecombination.

Kirill Gokhberg; Lorenz S. Cederbaum

2009-11-09T23:59:59.000Z

3

Electrons from Muon Capture  

Science Journals Connector (OSTI)

We have searched for the process ?-+p?p+e- or ?-+n?n+e- for ? mesons stopped in a Cu target. Scintillation counters were employed to detect the electrons from the process. No counts attributable to the electrons were obtained and we place an upper limit of ?5×10-4 for the relative rate of this process to that for the usual nuclear capture reaction.

J. Steinberger and Harry B. Wolfe

1955-12-01T23:59:59.000Z

4

Nanopores, megatonnes, and milliseconds : exploring engineered peptides as antimicrobial, carbon-capture,and biocatalytic agents  

E-Print Network (OSTI)

This work investigates the roles that peptides play in the fields of antimicrobials, surface functionalization, carbon capture, and biocatalysis. The results demonstrate that peptides, sometimes dismissed for their lack ...

Barbero, Roberto Juan

2012-01-01T23:59:59.000Z

5

Hyperfine Effects in Ionic Orbital Electron Capture  

E-Print Network (OSTI)

The K-orbital electron capture in ions with one or two electrons is analized for a general allowed nuclear transition. For ionic hyperfine states the angular neutrino distribution and the electron capture rate are given in terms of nuclear matrix elements. A possible application towards the determination of neutrino parameters is outlined.

M. A. Goñi

2010-03-02T23:59:59.000Z

6

Oscillations in the GSI electron capture experiment  

E-Print Network (OSTI)

In a recent paper, oscillations observed in the electron capture probability were attributed to the mixing of neutrino mass eigenstates. This paper is shown to be in error in two respects.

H. Burkhardt; J. Lowe; G. J. Stephenson Jr.; T. Goldman; and Bruce H. J. McKellar

2008-04-07T23:59:59.000Z

7

EVOLUTION OF PROGENITORS FOR ELECTRON CAPTURE SUPERNOVAE  

SciTech Connect

We provide progenitor models for electron capture supernovae (ECSNe) with detailed evolutionary calculation. We include minor electron capture nuclei using a large nuclear reaction network with updated reaction rates. For electron capture, the Coulomb correction of rates is treated and the contribution from neutron-rich isotopes is taken into account in each nuclear statistical equilibrium (NSE) composition. We calculate the evolution of the most massive super asymptotic giant branch stars and show that these stars undergo off-center carbon burning and form ONe cores at the center. These cores become heavier up to the critical mass of 1.367 M{sub Sun} and keep contracting even after the initiation of O+Ne deflagration. Inclusion of minor electron capture nuclei causes convective URCA cooling during the contraction phase, but the effect on the progenitor evolution is small. On the other hand, electron capture by neutron-rich isotopes in the NSE region has a more significant effect. We discuss the uniqueness of the critical core mass for ECSNe and the effect of wind mass loss on the plausibility of our models for ECSN progenitors.

Takahashi, Koh; Umeda, Hideyuki [Department of Astronomy, University of Tokyo, Tokyo 113-0033 (Japan); Yoshida, Takashi, E-mail: ktakahashi@astron.s.u-tokyo.ac.jp, E-mail: umeda@astron.s.u-tokyo.ac.jp, E-mail: yoshida@yukawa.kyoto-u.ac.jp [Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)

2013-07-01T23:59:59.000Z

8

Electron Capture in a Fully Ionized Plasma  

E-Print Network (OSTI)

Properties of fully ionized water plasmas are discussed including plasma charge density oscillations and the screening of the Coulomb law especially in the dilute classical Debye regime. A kinetic model with two charged particle scattering events determines the transition rate per unit time for electron capture by a nucleus with the resulting nuclear transmutations. Two corrections to the recent Maiani et al. calculations are made: (i) The Debye screening length is only employed within its proper domain of validity. (ii) The WKB approximation employed by Maiani in the long De Broglie wave length limit is evidently invalid. We replace this incorrect approximation with mathematically rigorous Calogero inequalities in order to discuss the scattering wave functions. Having made these corrections, we find a verification for our previous results based on condensed matter electro-weak quantum field theory for nuclear transmutations in chemical batteries.

A. Widom; J. Swain; Y. N. Srivastava

2014-09-17T23:59:59.000Z

9

Sudden, "Step" Electron Capture by Conjugated Polymers  

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

Sudden, "Step" Electron Capture by Conjugated Polymers Sudden, "Step" Electron Capture by Conjugated Polymers Andrew R. Cook, Paiboon Sreearunothai, Sadayuki Asaoka and John R. Miller J. Phys. Chem. A 115, 11615-11623 (2011). [Find paper at ACS Publications] Abstract: Data showing significant time-resolution-limited "step" capture of electrons following radiolysis by 7 - 10 ps electron pulses in a series of different length and different concentration conjugated polyfluorene polymers in tetrahydrofuran (THF) are presented. At the highest concentration, ~48 mM in repeat units for lengths from 20 to 133 fluorenes, ~30% of the electrons formed during pulse radiolysis were captured in the step, with a constant efficiency per repeat unit. Step capture per repeat unit (q = 6.9 M-1) is 60% of the presolvated electron capture efficiency

10

Transmutation of Elements through Capture of Electrons by Nuclei  

E-Print Network (OSTI)

A proton can capture an electron and turn into a neutron provided the electron has a kinetic energy of 0.782 MeV or more.An element of the Periodic Table can change into another on being exposed to such high energy electrons.

A. Mukherji

2011-05-11T23:59:59.000Z

11

Physics Reach of Electron-Capture Neutrino Beams  

E-Print Network (OSTI)

To complete the picture of neutrino oscillations two fundamental parameters need to be measured, theta13 and delta. The next generation of long baseline neutrino oscillation experiments -superbeams, betabeams and neutrino factories- indeed take aim at measuring them. Here we explore the physics reach of a new candidate: an electron-capture neutrino beam. Emphasis is made on its feasibility thanks to the recent discovery of nuclei that decay fast through electron capture, and on the interplay with a betabeam (its closest relative).

J. Bernabeu; J. Burguet-Castell; C. Espinoza; M. Lindroos

2005-10-21T23:59:59.000Z

12

Isolated electron spins in silicon carbide with millisecond-coherence times  

E-Print Network (OSTI)

The elimination of defects from SiC has facilitated its move to the forefront of the optoelectronics and power-electronics industries. Nonetheless, because the electronic states of SiC defects can have sharp optical and spin transitions, they are increasingly recognized as a valuable resource for quantum-information and nanoscale-sensing applications. Here, we show that individual electron spin states in highly purified monocrystalline 4H-SiC can be isolated and coherently controlled. Bound to neutral divacancy defects, these states exhibit exceptionally long ensemble Hahn-echo spin coherence, exceeding 1 ms. Coherent control of single spins in a material amenable to advanced growth and microfabrication techniques is an exciting route to wafer-scale quantum technologies.

David J. Christle; Abram L. Falk; Paolo Andrich; Paul V. Klimov; Jawad ul Hassan; Nguyen T. Son; Erik Janzén; Takeshi Ohshima; David D. Awschalom

2014-06-27T23:59:59.000Z

13

Electron Capture Reactions and Beta Decays in Steller Environments  

SciTech Connect

Electron capture reactions on Ni and Co isotopes are investigated by shell model calculations in steller environments. The capture rates depend sensitively on the distribution of the Gamow-Teller (GT) strength. The capture rates obtained by using GXPF1J Hamiltonian for fp-shell are found to be consistent with the rates obtained from experimental GT strength in {sup 58}Ni and {sup 60}Ni. Capture rates in Co isotopes, where there were large discrepancies among previous calculations, are also investigated. Beta decays of the N = 126 isotones are studied by shell model calculations taking into account both the GT and first-forbidden (FF) transitions. The FF transitions are found to be important to reduce the half-lives by twice to several times of those by the GT contributions only. Implications of the short half-lives of the waiting point nuclei on the r-process nucleosynthesis are discussed for various astrophysical conditions.

Suzuki, T. [Department of Physics and Graduate School of Integrated Basic Sciences, College of Humanities and Sciences, Nihon University, Sakurajosui 3-25-40, Setagaya-ku, Tokyo 156-8550, Japan and Center for Nuclear Study, University of Tokyo, Hirosawa, Wako-shi, Saitama, 351-0198 (Japan); Mao, H. [Graduate School of Integrated Basic Sciences, Nihon University, Sakurajosui-3-25-40, Setagaya-ku, Tokyo 156-8550, Japan and ENSPS, Pole API-Parc d'Innovation, Boulevard Sebastien Brant, BP 10413, 67412 ILLKIRCH CEDEXL (France); Honma, M. [Center for Mathematical Sciences, University of Aizu, Aizu-Wakamatsu, Fukushima 965-8580 (Japan); Yoshida, T. [Department of Astronomy, Graduate School of Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); Kajino, T. [Department of Astronomy, Graduate School of Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan) and National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588 (Japan); Otsuka, T. [Department of Physics and Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan) and RIKEN, Hirosawa, Wako-shi, Saitama 351-0198 (Japan)

2011-10-28T23:59:59.000Z

14

Decay Oscillations in Electron Capture and the Neutrino Mass Difference  

E-Print Network (OSTI)

Quantum mechanical theory disallows the model that has been used to infer the neutrino mass difference from the reported "GSI oscillations" in the rates of decay of hydrogen-like ions by electron capture. It has not been proved that the existence of mass-difference-dependent oscillations conflicts with quantum mechanics but no consistent quantum mechanical model has been shown to predict them.

Murray Peshkin

2014-03-17T23:59:59.000Z

15

The Use of the Electron Capture Detector With Trimethylsilyl Carbohydrates  

Science Journals Connector (OSTI)

......MARCH 1969 JOURNAL OF CHROMATOGRAPHIC SCIENCE VOL. 7 10 10-1 10-9 10- 10-7 10-6 Concentratian Grams * 150,usec A o 5,usec 1 0 Figure 7. 0 Electron capture detector response to hexa- TMS rnyo-inositol; A L, to hexa-TMS scyllo-inositol......

William R. Sherman; Sally L. Goodwin

1969-03-01T23:59:59.000Z

16

A combined beta-beam and electron capture neutrino experiment  

E-Print Network (OSTI)

The next generation of long baseline neutrino experiments will aim at determining the value of the unknown mixing angle, theta_{13}, the type of neutrino mass hierarchy and the presence of CP-violation in the lepton sector. Beta-beams and electron capture experiments have been studied as viable candidates for long baseline experiments. They use a very clean electron neutrino beam from the beta-decays or electron capture decays of boosted ions. In the present article we consider an hybrid setup which combines a beta-beam with an electron capture beam by using boosted Ytterbium ions. We study the sensitivity to the CP-violating phase delta and the theta_{13} angle, the CP-discovery potential and the reach to determine the type of neutrino mass hierarchy for this type of long baseline experiment. The analysis is performed for different neutrino beam energies and baselines. Finally, we also discuss how the results would change if a better knowledge of some of the assumed parameters was achieved by the time this experiment could take place.

J. Bernabeu; C. Espinoza; C. Orme; S. Palomares-Ruiz; S. Pascoli

2009-02-27T23:59:59.000Z

17

Screening Corrections to the Electron Capture Rates in Dense Stars by the Relativistically Degenerate Electron Liquid  

E-Print Network (OSTI)

We calculate the screening corrections to the electron capture rates in dense stars by the relativistically degenerate electron liquid. In order to calculate the screening corrections we adopt the linear response theory which is widely used in the field of solid state physics and liquid metal physics. In particular, we use the longitudinal dielectric function for the relativistically degenerate electron liquid derived by Jancovici. We calculate the screening potential at the position of the nucleus. By using this screening potential one can calculate the screening corrections to the electron capture rates. We will present accurate analytic fitting formulae which summarize our numerical results. These fitting formulae will facilitate the application of the present results. The screening corrections to the electron capture rates are typically a few percent.

Naoki Itoh; Nami Tomizawa; Masaya Tamamura; Shinya Wanajo; Satoshi Nozawa

2007-08-02T23:59:59.000Z

18

Electron capture by trapped Neq+ ions at very low energies  

Science Journals Connector (OSTI)

An electrostatic ion trap is used to trap Neq+ (1?q?10) ions created by a fast xenon beam passing through neon gas. Decay of a given charge state during the trapping time is due to electron-capture collisions with the ambient gas. Measurement of the decay constant versus density yields a rate constant, from which an effective cross section is derived. Neq+ + Ne (q=3-10) and Neq++Xe (q=6-10) collisions have been studied at mean collision energies in the range 1.0-70.0 eV. Marked oscillation of the effective capture cross sections with charge at fixed mean collision energies is observed. A strong velocity dependence of the effective cross section (rising as the velocity decreases) is observed for several collision pairs.

M. H. Prior; Richard Marrus; C. R. Vane

1983-07-01T23:59:59.000Z

19

Electron Capture and Scaling Anomaly in Polar Molecules  

E-Print Network (OSTI)

We present a new analysis of the electron capture mechanism in polar molecules, based on von Neumann's theory of self-adjoint extensions. Our analysis suggests that it is theoretically possible for polar molecules to form bound states with electrons, even with dipole moments smaller than the critical value D_0 given by 1.63\\times10^{-18} esu cm. This prediction is consistent with the observed anomalous electron scattering in H_2S and HCl, whose dipole moments are smaller than the critical value D_0. We also show that for a polar molecule with dipole moment less than D_0, typically there is only a single bound state, which is in qualitative agreement with observations. We argue that the quantum mechanical scaling anomaly is responsible for the formation of these bound states.

Pulak Ranjan Giri; Kumar S. Gupta; S. Meljanac; A. Samsarov

2007-03-13T23:59:59.000Z

20

Calculation of nuclear matrix elements in neutrinoless double electron capture  

E-Print Network (OSTI)

We compute nuclear matrix elements for neutrinoless double electron capture on $^{152}$Gd, $^{164}$Er and $^{180}$W nuclei. Recent precise mass measurements for these nuclei have shown a large resonance enhancement factor that makes them the most promising candidates for observing this decay mode. We use an advanced energy density functional method which includes beyond mean-field effects such as symmetry restoration and shape mixing. Our calculations reproduce experimental charge radii and $B(E2)$ values predicting a large deformation for all these nuclei. This fact reduces significantly the values of the NMEs leading to half-lives larger than $10^{29}$ years for the three candidates.

Tomas R. Rodriguez; Gabriel Martinez-Pinedo

2012-03-05T23:59:59.000Z

Note: This page contains sample records for the topic "milliseconds electron capture" 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

Electron-exchange effects on the charge capture process in degenerate quantum plasmas  

SciTech Connect

The electron-exchange effects on the charge capture process are investigated in degenerate quantum plasmas. The Bohr-Lindhard formalism with the effective interaction potential is employed to obtain the charge capture radius, capture probability, and capture cross section as functions of the impact parameter, projectile energy, electron-exchange parameter, Fermi energy, and plasmon energy. The result shows that the electron-exchange effect enhances the charge capture radius and the charge capture cross section in semiconductor quantum plasmas. It is also found that the charge capture radius and charge capture cross section increases with an increase of the Fermi energy and, however, decreases with increasing plasmon energy. Additionally, it is found that the peak position of the charge capture cross section is receded from the collision center with an increase of the electron-exchange parameter.

Jung, Young-Dae, E-mail: ydjung@hanyang.ac.kr [Department of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180-3590 (United States) [Department of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180-3590 (United States); Department of Applied Physics and Department of Bionanotechnology, Hanyang University, Ansan, Kyunggi-Do 426-791 (Korea, Republic of); Akbari-Moghanjoughi, M. [Azarbaijan Shahid Madani University, Faculty of Sciences, Department of Physics, 51745-406 Tabriz (Iran, Islamic Republic of) [Azarbaijan Shahid Madani University, Faculty of Sciences, Department of Physics, 51745-406 Tabriz (Iran, Islamic Republic of); International Centre for Advanced Studies in Physical Sciences and Institute for Theoretical Physics, Ruhr University Bochum, D-44780 Bochum (Germany)

2014-03-15T23:59:59.000Z

22

CP-violation reach of an electron capture neutrino beam  

E-Print Network (OSTI)

This article extends the work of Bernabeu and Espinoza by examining the CP-violation reach of a $^{150}$Dy electron capture beam through the variation of the two Lorentz boosts, the number of useful electron capture decays, the relative run time of each boost and the number of atmospheric backgrounds. The neutrinos are assumed to be sourced at CERN with an upgraded SPS and are directed towards a 440 kton Water Cerenkov detector located at the Canfranc laboratory. Two large `CP-coverage' choices for the boost pairings are found; a $\\delta$-symmetrical coverage for $(\\gamma_{1}, \\gamma_{2})$ = (280, 160) and an $\\delta$-asymmetric coverage for $(\\gamma_{1}, \\gamma_{2})$ = (440,150). With a nominal useful decay rate of $N_{\\rm ions} = 10^{18}$ ions per year, the $\\delta$-symmetric setup can rule out CP-conservation down to $\\sin^{2}2\\theta_{13} = 3\\cdot 10^{-4}$. To reach $\\sin^{2}2\\theta_{13} = 1\\cdot 10^{-3}$ for both $\\delta 0$ requires a useful decay rate of $N_{\\rm ions} = 6\\cdot 10^{17}$ ions per year.

Christopher Orme

2010-07-12T23:59:59.000Z

23

Radiative double-electron capture by bare nucleus with emission of one photon  

SciTech Connect

Calculation of the cross-section for the process of double-electron capture by a bare nucleus with emission of a single photon is presented. The double-electron capture is evaluated within the framework of quantum electrodynamics. The line-profile approach is employed. Since the radiative double-electron capture is governed by the electron correlation, corrections to the interelectron interaction were calculated with high accuracy, partly to all orders of the perturbation theory.

Chernovskaya, E. A.; Andreev, O. Yu. [Faculty of Physics, St. Petersburg State University, Ulyanovskaya 1, 198504, Petergof, St. Petersburg (Russian Federation); Labzowsky, L. N. [Faculty of Physics, St. Petersburg State University, Ulyanovskaya 1, 198504, Petergof, St. Petersburg (Russian Federation); Petersburg Nuclear Physics Institute, 188300, Gatchina, St. Petersburg (Russian Federation)

2011-12-15T23:59:59.000Z

24

ELECTRON-CAPTURE SUPERNOVAE AS ORIGIN OF {sup 48}Ca  

SciTech Connect

We report that electron-capture supernovae (ECSNe), arising from collapsing oxygen-neon-magnesium cores, are a possible source of {sup 48}Ca, whose origin has remained a longstanding puzzle. Our two-dimensional, self-consistent explosion model of an ECSN predicts ejection of neutron-rich matter with electron fractions Y{sub e} Almost-Equal-To 0.40-0.42 and relatively low entropies, s Almost-Equal-To 13-15 k{sub B} per nucleon (k{sub B} is the Boltzmann constant). Post-processing nucleosynthesis calculations result in appreciable production of {sup 48}Ca in such neutron-rich and low-entropy matter during the quasi-nuclear equilibrium and subsequent freezeout phases. The amount of ejected {sup 48}Ca can account for that in the solar inventory when we consider possible uncertainties in the entropies. ECSNe could thus be a site of {sup 48}Ca production in addition to a hypothetical, rare class of high-density Type Ia supernovae.

Wanajo, Shinya [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Janka, Hans-Thomas; Mueller, Bernhard, E-mail: shinya.wanajo@nao.ac.jp [Max-Planck-Institut fuer Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching (Germany)

2013-04-20T23:59:59.000Z

25

Laser Irradiated Enhancement of the Atomic Electron Capture Rate in search of New Physics  

E-Print Network (OSTI)

Electron capture processes are important in the search for new physics. In this context, a high capture rate is desired. We investigate the possibility of enhancing the electron capture rate by irradiating laser beam to ''atom''. The possibility of such enhancement can be understood as a consequence of an enhancement of the electron wave function at the origin, $\\Psi (0)$, through an increased effective mass of the electron. We find that an order of magnitude enhancement can be realized by using a laser with intensity on the order of $10^{10}$ W/mm$^2$ and a photon energy on the order of $10^{-3}$ eV.

Takaaki Nomura; Joe Sato; Takashi Shimomura

2007-06-16T23:59:59.000Z

26

The role of electron-electron interaction in the process of charge-carrier capture in deep quantum wells  

SciTech Connect

The role of electron-electron interaction in the process of electron capture to a deep quantum well is investigated. Using two-level and three-level quantum wells as examples, the basic electron-capture mechanisms, i.e., the interaction with optical phonons and the Coulomb electron-electron interaction, are considered, and the corresponding capture probabilities and electron lifetimes are calculated. The effect of Auger recombination on the charge-carrier distribution in a quantum well is also taken into account. With this taken into consideration, a set of rate equations is solved for a nonsteady-state mode, and the time dependences of the electron concentration at the ground energy level in the quantum well are found. The contributions of each of the recombination processes under consideration are shown.

Danilov, L. V., E-mail: danleon84@mail.ru; Zegrya, G. G. [Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation)] [Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation)

2013-10-15T23:59:59.000Z

27

Pulsed-Discharge Electron-Capture Detector: Kinetic Model, Response Factors, and Temperature Dependence  

Science Journals Connector (OSTI)

......competing with the electron capture processes for some compounds and dictated...the detector were made in the process of commercialization. The studies using methane...thermalized. A potential competing process is the ionization of the sample......

W.E. Wentworth; Y. Wang; Wayne Odegard; E.C.M. Chen; Stanley D. Stearns

1996-08-01T23:59:59.000Z

28

Electron transfer and capture dynamics in ZnSe quantum wells grown on GaAs  

SciTech Connect

We investigate the transfer and capture dynamics of electrons in phase coherent photorefractive ZnSe quantum wells grown on GaAs using degenerate three-beam four-wave-mixing. The measurements reveal electron capture times by the quantum well in the order of several tens of picoseconds and a transit time of approximately 5 picoseconds from the GaAs substrate through the ZnMgSe barrier.

Dongol, A.; Wagner, H. P. [Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221 (United States)

2013-12-04T23:59:59.000Z

29

Enhanced orbital electron-capture nuclear decay rate in compact medium  

E-Print Network (OSTI)

The eigenstate energies of an atom increase under spatial confinement and this effect should also increase the electron density of the orbital electrons at the nucleus thus increasing the decay rate of an electron-capturing radioactive nucleus. We have observed that the orbital electron capture rates of 109In and 110Sn increased by (1.00+-0.17)% and (0.48+-0.25)% respectively when implanted in the small Au lattice versus large Pb lattice. These results have been understood because of the higher compression experienced by the large radioactive atoms due to the spatial confinement in the smaller Au lattice.

A. Ray; P. Das; S. K. Saha; A. Goswami; A. De

2009-04-02T23:59:59.000Z

30

Cross sections for electron capture by neutral and charged particles in collisions with He  

Science Journals Connector (OSTI)

Experimental and theoretical cross sections for electron capture by neutral and charged particles in collisions with He atoms are tabulated and displayed in graphical form as a function of the energy of the incident projectile and according to the projectile charge state and, to the extent possible, the final electronic state. Literature from 1955 to March 1986 has been covered.

W.K. Wu; B.A. Huber; K. Wiesemann

1988-01-01T23:59:59.000Z

31

2013 R&D 100 Award: Movie-mode electron microscope captures nanoscale  

ScienceCinema (OSTI)

A new instrument developed by LLNL scientists and engineers, the Movie Mode Dynamic Transmission Electron Microscope (MM-DTEM), captures billionth-of-a-meter-scale images with frame rates more than 100,000 times faster than those of conventional techniques. The work was done in collaboration with a Pleasanton-based company, Integrated Dynamic Electron Solutions (IDES) Inc. Using this revolutionary imaging technique, a range of fundamental and technologically important material and biological processes can be captured in action, in complete billionth-of-a-meter detail, for the first time. The primary application of MM-DTEM is the direct observation of fast processes, including microstructural changes, phase transformations and chemical reactions, that shape real-world performance of nanostructured materials and potentially biological entities. The instrument could prove especially valuable in the direct observation of macromolecular interactions, such as protein-protein binding and host-pathogen interactions. While an earlier version of the technology, Single Shot-DTEM, could capture a single snapshot of a rapid process, MM-DTEM captures a multiframe movie that reveals complex sequences of events in detail. It is the only existing technology that can capture multiple electron microscopy images in the span of a single microsecond.

Lagrange, Thomas; Reed, Bryan

2014-07-21T23:59:59.000Z

32

2013 R&D 100 Award: Movie-mode electron microscope captures nanoscale  

SciTech Connect

A new instrument developed by LLNL scientists and engineers, the Movie Mode Dynamic Transmission Electron Microscope (MM-DTEM), captures billionth-of-a-meter-scale images with frame rates more than 100,000 times faster than those of conventional techniques. The work was done in collaboration with a Pleasanton-based company, Integrated Dynamic Electron Solutions (IDES) Inc. Using this revolutionary imaging technique, a range of fundamental and technologically important material and biological processes can be captured in action, in complete billionth-of-a-meter detail, for the first time. The primary application of MM-DTEM is the direct observation of fast processes, including microstructural changes, phase transformations and chemical reactions, that shape real-world performance of nanostructured materials and potentially biological entities. The instrument could prove especially valuable in the direct observation of macromolecular interactions, such as protein-protein binding and host-pathogen interactions. While an earlier version of the technology, Single Shot-DTEM, could capture a single snapshot of a rapid process, MM-DTEM captures a multiframe movie that reveals complex sequences of events in detail. It is the only existing technology that can capture multiple electron microscopy images in the span of a single microsecond.

Lagrange, Thomas; Reed, Bryan

2014-04-03T23:59:59.000Z

33

Electron capture and electron transport by fast ions penetrating solids: An open quantum system approach with sources and sinks  

Science Journals Connector (OSTI)

We present a joint theoretical and experimental study of the time evolution of electronic states of highly charged hydrogenic ions formed by capture during transmission through solids as they undergo multiple collisions and radiative decay. For this transport problem we have developed an inhomogeneous nonunitary Lindblad master equation that allows for a description of open quantum systems with both sinks (electron loss) and source (capture) present. We apply this theoretical framework to study transient coherences created in electron capture by 13.6MeV?amu Ar18+ ions transmitted through amorphous carbon foils and decoherence during subsequent interaction with the foil. In the limit of thin targets we can directly probe electron capture cross sections under single collision conditions, while for thicker targets we follow the partially coherent dynamics of the open quantum system in interaction with the solid as a function of interaction time. The calculated results are in close agreement with experimental data obtained at the LISE facility in GANIL. Photon intensities from excited argon ions were determined through high resolution x-ray spectroscopy in which individual fine structure components were resolved. Measurements were performed for a wide range of carbon foil thickness to study the time development of the excited state populations.

Marek Seliger; Carlos O. Reinhold; Tatsuya Minami; David R. Schultz; Michael S. Pindzola; Shuhei Yoshida; Joachim Burgdörfer; Emily Lamour; Jean-Pierre Rozet; Dominique Vernhet

2007-03-19T23:59:59.000Z

34

Prospects of detection of relic antineutrinos by resonant absorption in electron capturing nuclei  

E-Print Network (OSTI)

We consider the possibility of detecting relic anti-neutrinos by their resonant absorption in a nucleus, which can undergo electron capture. This possibility appears quite realistic in view of recent developments in Penning Trap Mass Spectrometry and cryogenic micro-calorimetry.

J. D. Vergados; Yu. N. Novikov

2014-09-26T23:59:59.000Z

35

Transition Operators Entering Neutrinoles Double Electron Capture to Excited Nuclear States  

E-Print Network (OSTI)

We construct the effective transition operators relevant for neutrinoless double electron capture leading to final nuclear states different than $0^{+}$. From the structure of these operators we see that, if such a process is observed experimentally, it will be very helpful in singling out the very important light neutrino mass contribution from the other lepton violating mechanisms

J. D. Vergados

2011-08-02T23:59:59.000Z

36

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

37

237. S.A. Eliseev, .. Yu.N. Novikov et Resonant Enhancement of Neutrinoless Double-Electron Capture  

E-Print Network (OSTI)

.. 237. S.A. Eliseev, .. Yu.N. Novikov et al.. Resonant Enhancement of Neutrinoless Double al. Q values for neutrinoless double-electron capture in 96Ru, 162Er, and 168Yb. Phys. Rev. C 83 in neutrinoless double-electron capture." Phys. Rev. C 84 (2011) 012501. 240. S. Eliseev, Yu. Novikov et al

Titov, Anatoly

38

Electron and Positron Capture Rates on $\\bf{^{55}}$Co in Stellar Matter  

E-Print Network (OSTI)

Cobalt-55 is not only present in abundance in presupernova phase but is also advocated to play a decisive role in the core collapse of massive stars. The spectroscopy of electron capture and emitted neutrinos yields useful information on the physical conditions and stellar core composition. B(GT) values to low-lying states are calculated microscopically using the pn-QRPA theory. Our rates are enhanced compared to the shell model rates. The enhancement is attributed partly to the liberty of selecting a huge model space, allowing consideration of many more parent excited states in our rate calculation. Unlike previous calculations, the so-called Brink's hypothesis is not assumed leading to a more realistic estimate of the rates. The electron and positron capture rates are calculated over a wide temperature and density grid.

Nabi, Jameel-Un; Sajjad, Muhammad

2014-01-01T23:59:59.000Z

39

Electron and Positron Capture Rates on $\\bf{^{55}}$Co in Stellar Matter  

E-Print Network (OSTI)

Cobalt-55 is not only present in abundance in presupernova phase but is also advocated to play a decisive role in the core collapse of massive stars. The spectroscopy of electron capture and emitted neutrinos yields useful information on the physical conditions and stellar core composition. B(GT) values to low-lying states are calculated microscopically using the pn-QRPA theory. Our rates are enhanced compared to the shell model rates. The enhancement is attributed partly to the liberty of selecting a huge model space, allowing consideration of many more parent excited states in our rate calculation. Unlike previous calculations, the so-called Brink's hypothesis is not assumed leading to a more realistic estimate of the rates. The electron and positron capture rates are calculated over a wide temperature and density grid.

Jameel-Un Nabi; Muneeb-Ur Rahman; Muhammad Sajjad

2014-08-15T23:59:59.000Z

40

Stellar electron-capture rates calculated with the finite-temperature relativistic random-phase approximation  

E-Print Network (OSTI)

We introduce a self-consistent microscopic theoretical framework for modelling the process of electron capture on nuclei in stellar environment, based on relativistic energy density functionals. The finite-temperature relativistic mean-field model is used to calculate the single-nucleon basis and the occupation factors in a target nucleus, and $J^{\\pi} = 0^{\\pm}$, $1^{\\pm}$, $2^{\\pm}$ charge-exchange transitions are described by the self-consistent finite-temperature relativistic random-phase approximation. Cross sections and rates are calculated for electron capture on 54,56Fe and 76,78Ge in stellar environment, and results compared with predictions of similar and complementary model calculations.

YiFei Niu; Nils Paar; Dario Vretenar; Jie Meng

2011-04-09T23:59:59.000Z

Note: This page contains sample records for the topic "milliseconds electron capture" from the National Library of EnergyBeta (NLEBeta).
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to obtain the most current and comprehensive results.


41

Can neutrino mass be measured in low-energy electron capture decay?  

E-Print Network (OSTI)

The standard kinematic method for determining neutrino mass from the beta decay of tritium or other isotope is to measure the shape of the electron spectrum near the endpoint. It has been known for 30 years that a similar distortion of the "visible energy" remaining after electron capture is caused by neutrino mass. There has been a resurgence of interest in using this method with 163-Ho. Recent theoretical analyses offer reassurance that there are no significant theoretical uncertainties. We show that the situation is, however, more complicated, and that the spectrum shape is presently not well enough understood to permit a sensitive determination of the neutrino mass in this way.

Robertson, R G H

2014-01-01T23:59:59.000Z

42

Evaluation of electron capture reaction rates in Ni isotopes in stellar environments  

SciTech Connect

Electron capture rates in Ni isotopes are studied in stellar environments, that is, at high densities and high temperatures during the core-collapse and postbounce explosive nucleosynthesis in supernovae. Reaction rates in {sup 58}Ni and {sup 60}Ni, as well as in {sup 56}Ni, {sup 62}Ni, and {sup 64}Ni, are evaluated by shell-model calculations with the use of a new shell-model Hamiltonian in the fp shell, GXPF1J. While the previous shell-model calculations failed to reproduce the measured peaks of Gamow-Teller strength in {sup 58}Ni and {sup 60}Ni, the present new Hamiltonian is found to reproduce them very well, as well as the capture rates obtained from the observed strengths. Strengths and energies of the Gamow-Teller transitions in {sup 56}Ni, {sup 62}Ni, and {sup 64}Ni are also found to be consistent with the observations.

Suzuki, Toshio [Department of Physics and Graduate School of Integrated Basic Sciences, College of Humanities and Sciences, Nihon University Sakurajosui 3-25-40, Setagaya-ku, Tokyo 156-8550 (Japan); Center for Nuclear Study, University of Tokyo, Hirosawa, Wako-shi, Saitama 351-0198 (Japan); National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588 (Japan); Honma, Michio [Center for Mathematical Sciences, University of Aizu, Aizu-Wakamatsu, Fukushima 965-8580 (Japan); Mao, Helene [ENSPS, Pole API-Parc d'Innovation, Boulevard Sebastien Brant, BP 10413, F-67412 Illkirch Cedex (France); Otsuka, Takaharu [Department of Physics and Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 (United States); Kajino, Toshitaka [National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588 (Japan); Deaprtment of Astronomy, Graduate School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113-0033 (Japan)

2011-04-15T23:59:59.000Z

43

Fine-grid calculations for stellar electron and positron capture rates on Fe isotopes  

SciTech Connect

The acquisition of precise and reliable nuclear data is a prerequisite to success for stellar evolution and nucleosynthesis studies. Core-collapse simulators find it challenging to generate an explosion from the collapse of the core of massive stars. It is believed that a better understanding of the microphysics of core-collapse can lead to successful results. The weak interaction processes are able to trigger the collapse and control the lepton-to-baryon ratio (Y{sub e}) of the corematerial. It is suggested that the temporal variation of Y{sub e} within the core of a massive star has a pivotal role to play in the stellar evolution and a fine-tuning of this parameter at various stages of presupernova evolution is the key to generate an explosion. During the presupernova evolution of massive stars, isotopes of iron, mainly {sup 54-56}Fe, are considered to be key players in controlling Y{sub e} ratio via electron capture on these nuclides. Recently an improved microscopic calculation of weak-interaction-mediated rates for iron isotopes was introduced using the proton-neutron quasiparticle random-phase-approximation (pn-QRPA) theory. The pn-QRPA theory allows a microscopic state-by-state calculation of stellar capture rates which greatly increases the reliability of calculated rates. The results were suggestive of some fine-tuning of the Y{sub e} ratio during various phases of stellar evolution. Here we present for the first time the fine-grid calculation of the electron and positron capture rates on {sup 54-56}Fe. The sensitivity of the pn-QRPA calculated capture rates to the deformation parameter is also studied in this work. Core-collapse simulators may find this calculation suitable for interpolation purposes and for necessary incorporation in the stellar evolution codes.

Nabi, Jameel-Un, E-mail: jameel@giki.edu.pk [Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Faculty of Engineering Sciences (Pakistan)] [Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Faculty of Engineering Sciences (Pakistan); Tawfik, Abdel Nasser, E-mail: a.tawfik@eng.mti.edu.eg [MTI University, Egyptian Center for Theoretical Physics (ECTP) (Egypt)

2013-03-15T23:59:59.000Z

44

Nuclear matrix elements for neutrinoless double-beta decay and double-electron capture  

E-Print Network (OSTI)

A new generation of neutrinoless double beta decay experiments with improved sensitivity is currently under design and construction. They will probe inverted hierarchy region of the neutrino mass pattern. There is also a revived interest to the resonant neutrinoless double-electron capture, which has also a potential to probe lepton number conservation and to investigate the neutrino nature and mass scale. The primary concern are the nuclear matrix elements. Clearly, the accuracy of the determination of the effective Majorana neutrino mass from the measured 0\

Amand Faessler; Vadim Rodin; Fedor Simkovic

2012-06-03T23:59:59.000Z

45

Levels in Pu237 populated by Am237 (electron capture) and Cm241(?) decays  

Science Journals Connector (OSTI)

The electron capture decay scheme of Am237 (73 min) has been investigated by measuring the ?-ray and conversion-electron spectra of mass-separated Am237 samples. The ?-ray spectra were measured with a Ge(Li) spectrometer and the conversion-electron spectra were measured with a cooled Si(Li) detector and a magnetic ?-ray spectrometer. Thirty-five ? rays were identified and the multipolarities of most of the transitions were deduced. The half-life of Am237 was determined by following the decay of the 280.2 keV photopeak and was found to be 73.0 ± 1.0 min. The ?-particle energy and ? branching were measured to be 6.042 ± 0.005 MeV and [(2.5 ± 0.3) × 10-2]%, respectively. On the basis of the present investigation the following single-particle states have been identified in Pu237: 72-[743], 0 ½+[631], 145.5; 52+[622], 280.2; 32+[631], 370.4; 52+[633], 407.8; 72+[624], 473.5; 52-[752], 655.3; and 72+[613], 908.8 keV. The ground state of Am237 has been deduced to be the 52-[523] Nilsson orbital. The logft values for electron capture transitions to the observed states were derived. The ?-particle spectrum of a mass-separated Cm241 sample was measured with the Argonne double focusing magnetic spectrometer. Eleven ? groups identified in this spectrum populate the members of the ground state, ½+[631], and 32+[631] bands. The ?-decay hindrance factors are consistent with the Nilsson-state assignments deduced from Am237 electron capture decay.RADIOACTIVITY Am237 [from Np237(?, 4n) and Np237(He3, 3n))]; measured T12, E?, E?, I?, Ece, Ice, ??- coin, ? branching, Cm241 [from Pu239(?, 2n)]; measured E?, I?; deduced hindrance factors. Pu237 deduced levels logft, (EC) ? multipolarity, I, ?, eight single-particle states. Mass-separated Am237 and Cm241. Toroidal ? spectrometer at 0.15% FWHM.

I. Ahmad; F. T. Porter; M. S. Freedman; R. K. Sjoblom; J. Lerner; R. F. Barnes; J. Milsted; P. R. Fields

1975-08-01T23:59:59.000Z

46

Fine-Grid Calculations for Stellar Electron and Positron Capture Rates on Fe-Isotopes  

E-Print Network (OSTI)

The acquisition of precise and reliable nuclear data is a prerequisite to success for stellar evolution and nucleosynthesis studies. Core-collapse simulators find it challenging to generate an explosion from the collapse of the core of massive stars. It is believed that a better understanding of the microphysics of core-collapse can lead to successful results. The weak interaction processes are able to trigger the collapse and control the lepton-to-baryon ratio ($Y_{e}$) of the core material. It is suggested that the temporal variation of $Y_{e}$ within the core of a massive star has a pivotal role to play in the stellar evolution and a fine-tuning of this parameter at various stages of presupernova evolution is the key to generate an explosion. During the presupernova evolution of massive stars, isotopes of iron, mainly $^{54,55,56}$Fe, are considered to be key players in controlling $Y_{e}$ ratio via electron capture on these nuclide. Recently an improved microscopic calculation of weak interaction mediated rates for iron isotopes was introduced using the proton-neutron quasiparticle random phase approximation (pn-QRPA) theory. The pn-QRPA theory allows a microscopic \\textit{state-by-state} calculation of stellar capture rates which greatly increases the reliability of calculated rates. The results were suggestive of some fine-tuning of the $Y_{e}$ ratio during various phases of stellar evolution. Here we present for the first time the fine-grid calculation of the electron and positron capture rates on $^{54,55,56}$Fe. Core-collapse simulators may find this calculation suitable for interpolation purposes and for necessary incorporation in the stellar evolution codes.

Jameel-Un Nabi; Abdel Nasser Tawfik

2011-08-23T23:59:59.000Z

47

Measuring the axial form factor of {sup 3}He using weak capture of polarized electrons  

SciTech Connect

A low energy, high intensity polarized electron beam could enable the extraction of the A=3 weak axial form factors F{sub A} using the reaction ?e+{sup 3}He?{sup 3}H+?. These form factors have never been measured before. We discuss the feasibility of such an experiment using a small toroidal magnet and a radial low energy recoil detector to tag the recoil tritons. A moderately high intensity polarized electron beam (>500 ?A) with beam energies between 50 - 150 MeV is necessary for the cross section measurement and to provides a free clean measurement of the background. Moreover, in addition to the cross section, by measuring the electron spin and recoil triton correlation coefficient it may be possible to search for second class currents and to extract the ratio of the axial to the vector form factor of the nucleon. Such novel electron scattering based measurements would have a completely different set of systematic uncertainties compared to polarized neutron beta decay, neutrino scattering and muon capture experiments which are typically used to extract the weak form-factors.

Dutta, D. [Mississippi State University, Mississippi State, MS 39762 (United States)

2013-11-07T23:59:59.000Z

48

Shell-model picture of virtual detour transitions in Ca41 radiative electron-capture decay  

Science Journals Connector (OSTI)

For the first forbidden unique (1u) radiative electron-capture ? decay of Ca41, a contribution of the ?/? detour transitions via virtual nuclear states to the bremsstrahlung spectrum has been considered in terms of the shell model. Calculations of the matrix elements for the virtual E1 ? and allowed Gamow-Teller ? transitions have been performed with the use of the Warburton, Becker, Millener, and Brown interactions. For the effective charge, which describes the contribution of the detour transitions, an interval 0.96

J. L. ?ylicz; M. Pfützner; S. G. Rohozi?ski; B. A. Brown

1996-04-01T23:59:59.000Z

49

Calculated partial cross sections for the single-electron-capture process in the N5++He collision  

Science Journals Connector (OSTI)

Partial cross sections of single-electron capture on the n=3 levels in the N5++He collision have been calculated by means of a semiclassical method using ab initio potential-energy curves and radial and rotational coupling matrix elements.

Marie-Christine Bacchus-Montabonel

1989-11-15T23:59:59.000Z

50

Strong neutrino cooling by cycles of electron capture and decay in neutron star crusts  

SciTech Connect

The temperature in the crust of an accreting neutron star, which comprises its outermost kilometre, is set by heating from nuclear reactions at large densities, neutrino cooling and heat transport from the interior. The heated crust has been thought to affect observable phenomena at shallower depths, such as thermonuclear bursts in the accreted envelope. Here we report that cycles of electron capture and its inverse, decay, involving neutron-rich nuclei at a typical depth of about 150 metres, cool the outer neutron star crust by emitting neutrinos while also thermally decoupling the surface layers from the deeper crust. This Urca mechanism has been studied in the context of white dwarfs13 and type Ia supernovae, but hitherto was not considered in neutron stars, because previous models1, 2 computed the crust reactions using a zero-temperature approximation and assumed that only a single nuclear species was present at any given depth. The thermal decoupling means that X-ray bursts and other surface phenomena are largely independent of the strength of deep crustal heating. The unexpectedly short recurrence times, of the order of years, observed for very energetic thermonuclear superbursts are therefore not an indicator of a hot crust, but may point instead to an unknown local heating mechanism near the neutron star surface.

Schatz, Hendrik [Michigan State University, East Lansing] [Michigan State University, East Lansing; Gupta, Sanjib [Indian Institute of Technology, Kanpur] [Indian Institute of Technology, Kanpur; Moeller, Peter [Los Alamos National Laboratory (LANL)] [Los Alamos National Laboratory (LANL); Beard, Mary [University of Notre Dame, IN] [University of Notre Dame, IN; Brown, Edward [Michigan State University, East Lansing] [Michigan State University, East Lansing; Deibel, A. T. [Michigan State University, East Lansing] [Michigan State University, East Lansing; Gasques, Leandro [University of Sao Paulo, BRAZIL] [University of Sao Paulo, BRAZIL; Hix, William Raphael [ORNL] [ORNL; Keek, Laurens [Georgia Institute of Technology, Atlanta] [Georgia Institute of Technology, Atlanta; Lau, Rita [National Superconducting Cyclotron Laboratory (NSCL)] [National Superconducting Cyclotron Laboratory (NSCL); Steiner, Andrew M [University of Washington, Seattle] [University of Washington, Seattle; Wiescher, Michael [University of Notre Dame, IN] [University of Notre Dame, IN

2013-01-01T23:59:59.000Z

51

Laser Irradiated Enhancement of the Atomic Electron Capture Rate in Search of New Physics  

Science Journals Connector (OSTI)

......Introduction Capture processes have a potential power to search for new physics. For example, instead of neutrinoless double beta decay, the process (Z, A) + e- (Z - 2, A) + e+ , (1.1) where (Z, A) denotes a nucleus of atomic......

Takaaki Nomura; Joe Sato; Takashi Shimomura

2007-03-01T23:59:59.000Z

52

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

53

State-selective electron capture in {sup 3}He{sup 2+} + He collisions at intermediate impact energies  

SciTech Connect

In this work we have measured single-electron capture in collisions of {sup 3}He{sup 2+} projectiles incident on a helium target for energies of 13.3-100 keV/amu with the cold-target recoil-ion momentum spectroscopy setup implemented at the Centro Atomico Bariloche. State-selective single-capture cross sections were measured as a function of the impact energy. They were found to agree with previous existing data from the Frankfurt group, starting at the impact energy of 60 keV/amu; as well as with recent data, at 7.5 keV/amu, from the Lanzhou group. The present experimental results are also contrasted to the classical trajectory Monte Carlo method with dynamical screening.

Alessi, M. [Instituto Balseiro, Av. E. Bustillo 9500, 8400 San Carlos de Bariloche (Argentina); Centro Atomico Bariloche, Av. E. Bustillo 9500, 8400 San Carlos de Bariloche (Argentina); Otranto, S. [CONICET and Departamento de Fisica Universidad Nacional del Sur, Av. Alem 1253, 8000 Bahia Blanca (Argentina); Focke, P. [Centro Atomico Bariloche, Av. E. Bustillo 9500, 8400 San Carlos de Bariloche (Argentina)

2011-01-15T23:59:59.000Z

54

Nuclear-atomic state degeneracy in neutrinoless double-electron capture: A unique test for a Majorana-neutrino  

E-Print Network (OSTI)

There is a general consensus that detection of a double-beta decay without any neutrino involved would mark physics beyond the Standard Model. This is because in such decay modes lepton number conservation would be violated and the neutrino would reveal itself as being its own antiparticle, thereby of Majorana type. So far, the experimental focus has mostly been on the double beta minus decay variant, where one attempts to measure the spectrum of the two emitted electrons. A discrete line at the endpoint energy marks the unique signature for a Majorana neutrino. Little attention has been given to alternative decay modes in double-beta decay. In this note we show that there is at least one case in the periodic table, where the parent in the neutrinoless double-electron capture process is nearly degenerate with an excited state in the daughter, leading to a possible enhancement of the decay rate by several orders of magnitude. It is the nucleus 74-Se, which has this unique property. Furthermore, there is an easy to detect 2 gamma-ray decay cascade in 74-Ge, which follows the zero-neutrino double electron capture, and which by its mere detection provides unique signature of the Majorana neutrino.

D. Frekers

2005-06-01T23:59:59.000Z

55

Multiwire-Proportional-Counter Measurement of the ML Orbital-Electron-Capture Ratio in Ge71 Decay  

Science Journals Connector (OSTI)

The ML orbital-electron-capture ratio in Ge71 decay has been measured in a wall-less multiwire proportional counter containing the gaseous radioactive compound Ge71H4. The counter was filled to 6 atm with argon containing 15 cm Hg propane. Recent advances in proportional-counter spectrometry below 500 eV have extended the sensitivity for precision measurement to the detection of single- and few-electron events down to essentially zero energy, even in the presence of high intensities of more energetic radiation. These improvements are the result not only of the sophistication of the low-noise electronic system, but also of the present investigation of the degradation spectrum (low-energy tails and afterpulses) from spectral peaks, and of the resolution from each other of single- and few-electron spectra by using computer analysis. A fully transistorized electronic system was developed which includes a special dc-coupled logic unit with zero-time recovery (updating) to perform the following operations: (i) to ensure proper anticoincidence functioning of the ring counter; (ii) to provide paralysis pulses necessary to block possible afterpulses following an ionizing event in either the ring or central counter; and (iii) to eliminate the phenomenon of front- and backedge clipping of large pulses into small ones by the action of the anticoincidence gate. Measurements were made of the K, L, and M peaks, having mean energies of 10.37 keV, 1298, and 158 eV, respectively, and the resulting orbital-electron-capture ratios were determined to be PLPK=0.117±0.001 and PMPL=0.162±0.003. These ratios are compared with theoretical results. Whereas the present LK capture ratio is in closer agreement with theory corrected for exchange according to Bahcall, the theoretical prediction of the ML ratio by Bahcall with correction for exchange lies approximately 7% above the present value, which agrees well with a recent theoretical calculation by Vatai. The half-life of Ge71 was found by least-squares fitting to be 11.15 ± 0.15 days, by following the decay of K x rays from a solid source with a Ge(Li) x-ray detector.

H. Genz; J. P. Renier; J. G. Pengra; R. W. Fink

1971-01-01T23:59:59.000Z

56

Detailed microscopic calculation of stellar electron and positron capture rates on $^{24}$Mg for O+Ne+Mg core simulations  

E-Print Network (OSTI)

Few white dwarfs, located in binary systems, may acquire sufficiently high mass accretion rates resulting in the burning of carbon and oxygen under nondegenerate conditions forming a O+Ne+Mg core. These O+Ne+Mg cores are gravitationally less bound than more massive progenitor stars and can release more energy due to the nuclear burning. They are also amongst the probable candidates for low entropy r-process sites. Recent observations of subluminous Type II-P supernovae (e.g., 2005cs, 2003gd, 1999br, 1997D) were able to rekindle the interest in 8 -- 10 M$_{\\odot}$ which develop O+Ne+Mg cores. Microscopic calculations of capture rates on $^{24}$Mg, which may contribute significantly to the collapse of O+Ne+Mg cores, using shell model and proton-neutron quasiparticle random phase approximation (pn-QRPA) theory, were performed earlier and comparisons made. Simulators, however, may require these capture rates on a fine scale. For the first time a detailed microscopic calculation of the electron and positron captur...

Nabi, Jameel-Un

2014-01-01T23:59:59.000Z

57

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?9 to 15) 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

58

Detailed microscopic calculation of stellar electron and positron capture rates on $^{24}$Mg for O+Ne+Mg core simulations  

E-Print Network (OSTI)

Few white dwarfs, located in binary systems, may acquire sufficiently high mass accretion rates resulting in the burning of carbon and oxygen under nondegenerate conditions forming a O+Ne+Mg core. These O+Ne+Mg cores are gravitationally less bound than more massive progenitor stars and can release more energy due to the nuclear burning. They are also amongst the probable candidates for low entropy r-process sites. Recent observations of subluminous Type II-P supernovae (e.g., 2005cs, 2003gd, 1999br, 1997D) were able to rekindle the interest in 8 -- 10 M$_{\\odot}$ which develop O+Ne+Mg cores. Microscopic calculations of capture rates on $^{24}$Mg, which may contribute significantly to the collapse of O+Ne+Mg cores, using shell model and proton-neutron quasiparticle random phase approximation (pn-QRPA) theory, were performed earlier and comparisons made. Simulators, however, may require these capture rates on a fine scale. For the first time a detailed microscopic calculation of the electron and positron capture rates on $^{24}$Mg on an extensive temperature-density scale is presented here. This type of scale is more appropriate for interpolation purposes and of greater utility for simulation codes. The calculations are done using the pn-QRPA theory using a separable interaction. The deformation parameter, believed to be a key parameter in QRPA calculations, is adopted from experimental data to further increase the reliability of the QRPA results. The resulting calculated rates are up to a factor of 14 or more enhanced as compared to shell model rates and may lead to some interesting scenario for core collapse simulators.

Jameel-Un Nabi

2014-08-15T23:59:59.000Z

59

Electron Capture $?$-Decay of $^7$Be Encapsulated in C$_{60}$: Origin of Increased Electron Density at the $^7$Be Nucleus  

E-Print Network (OSTI)

We offer a new theoretical interpretation for the effect of enhanced electron density at $^7$Be nucleus encapsulated in fullerene C$_{60}$. Our {\\it{ab initio}} Hartree-Fock calculations show that electron density at the $^7$Be nucleus in $^7$Be@C$_{60}$ increase due to {\\it{}attractive} effective potential well generated by the fullerene. The 2$s$ state in the isolated Be atom turns into 3$s$ state in the joint potential. This new state has higher energy, and slightly larger amplitude at the Be nucleus than the previous 2$s$ state. Moreover the 3$s$ wave function has additional {\\it{}node} appeared at the distance $r \\simeq 5a_B$ from the center. The node imitates repulsion between the Be electron and the fullerene wall, because the electron has zero probability to occupy this region. Such imitation of the repulsion by means of the node in attractive potential has direct physical analogy in the theory of $\\alpha$-$\\alpha$ and $N$-$N$ nuclear interactions.

E. V. Tkalya; A. V. Bibikov; I. V. Bodrenko

2010-01-12T23:59:59.000Z

60

Nucleophilic displacement (SN2) reactions in binary van der waals clusters induced by resonant electron capture  

Science Journals Connector (OSTI)

The nucleophilic displacement reactions F? + CH3Y ? CH3F + Y? (Y = Cl, Br, I) and Cl? + \\{OCH3Br\\} ? \\{CH3Cl\\} + Br? are studied in a crossed beam experiment where binary clusters produced by supersonic beam expansion interact with a monochromatized electron beam. The nucleophile (F?, Cl?) is generated by resonant dissociative electron attachment (DA) from one component of the cluster and then undergoes an SN2 reaction with the second component (the “substrate” molecule CH3Y). Y? ions carrying the DA resonance profile of the nucleophile are then identified as products of the corresponding SN2 reaction. Although isolated \\{CH3Cl\\} has an unmeasurably low DA (Cl?) cross section (SN2 reactions. In addition, the product ion Y? solvated by CH3Y molecules and also ion-molecule complexes (FCH3Y)? involved in the reaction are observed within the DA resonance of the nucleophile. The relative intensity of the naked product ion with respect to the ion-molecule complexes is a mirror of the exothermicity of the corresponding SN2 reaction. Because in DA the nuclephile can be created with a defined amount of translational energy, the potential use of the present method to derive information on the energy dependence of the reaction efficiency is discussed.

Lars Lehmann; Eugen Illenberger

1999-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "milliseconds electron capture" 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

1." Resonant Enhancement of Neutrinoless Double-Electron Capture in 152Gd. " S.A. Eliseev, .. Yu.N. Novikov et al., Phys. Rev. Letters 106 (2011) 052504.  

E-Print Network (OSTI)

2011 . : 1." Resonant Enhancement of Neutrinoless Double-Electron Capture in 152Gd. " S.A. Eliseev, .. Yu.N. Novikov et al., Phys. Rev. Letters 106 (2011) 052504. 2. "Q values for neutrinoless., Phys. Rev. C 83 (2011) 038501. 3. "Multiple-resonance phenomenon in neutrinoless double

Titov, Anatoly

62

Electron capture from H{sub 2} to highly charged Th and Xe ions trapped at center-of-mass energies near 6 eV  

SciTech Connect

Ions with charge states as high as 80+, produced in the Lawrence Livermore National Laboratory electron beam ion trap were extracted and transferred to a Penning ion trap (RETRAP). RETRAP was operated at cryogenic temperature in the field of a superconducting magnet. The stored low-energy ions collided occasionally with H{sub 2} molecules in the ultrahigh-vacuum environment of the trap, capturing one or two electrons and reducing the charge state of the ions. The number of ions was monitored nondestructively by ramping the axial oscillation frequencies of the ions through resonance with a tuned circuit composed in part of trap capacitance and an external inductor. This produced resonance signals whose square is proportional to the number of ions in each charge state. These signals were recorded vs storage time to determine the electron-capture rates. From these rates the relative electron-capture cross sections were obtained using estimates of the mean ion energies based on modeling the ion storage, and with the aid of a density calibration measurement using Ar{sup 11+}. The measured total electron-capture cross sections are consistent with a linear increase with charge state q. The cross-section data for the highest charge states lie above the predictions of the absorbing sphere model, but agree within uncertainties in both experiment and theory. The true double-capture cross-section fraction for q{gt}35 is near 25{percent}. The results are discussed with relation to measurements on lower charge states, and with theory. {copyright} {ital 1998} {ital The American Physical Society}

Weinberg, G.; Church, D.A. [Physics Department, Texas AM University, College Station, Texas 77843-4242 (United States)] [Physics Department, Texas AM University, College Station, Texas 77843-4242 (United States); Steiger, J.; McDonald, J.; Schneider, D. [Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550 (United States)] [Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550 (United States)

1998-06-01T23:59:59.000Z

63

E-Print Network 3.0 - accretion-powered millisecond x-ray Sample...  

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

accretion- powered millisecond pulsars and oscillations from thermonuclear X-ray... bursts. 2.1 Accretion-powered millisecond pulsars Although as early as 1996 the discovery of...

64

A Non-radial Oscillation Mode in an Accreting Millisecond Pulsar?  

Science Journals Connector (OSTI)

We present results of targeted searches for signatures of non-radial oscillation modes (such as r- and g-modes) in neutron stars using RXTE data from several accreting millisecond X-ray pulsars (AMXPs). We search for potentially coherent signals in the neutron star rest frame by first removing the phase delays associated with the star's binary motion and computing fast Fourier transform power spectra of continuous light curves with up to 230 time bins. We search a range of frequencies in which both r- and g-modes are theoretically expected to reside. Using data from the discovery outburst of the 435 Hz pulsar XTE J1751–305 we find a single candidate, coherent oscillation with a frequency of 0.5727597 ? ?spin = 249.332609 Hz, and a fractional Fourier amplitude of 7.46 ? 10–4. We estimate the significance of this feature at the 1.6 ? 10–3 level, slightly better than a 3? detection. Based on the observed frequency we argue that possible mode identifications include rotationally modified g-modes associated with either a helium-rich surface layer or a density discontinuity due to electron captures on hydrogen in the accreted ocean. In the latter case the presence of sufficient hydrogen in this ultracompact system with a likely helium-rich donor would present an interesting puzzle. Alternatively, the frequency could be identified with that of an inertial mode or a core r-mode modified by the presence of a solid crust; however, the r-mode amplitude required to account for the observed modulation amplitude would induce a large spin-down rate inconsistent with the observed pulse timing measurements. For the AMXPs XTE J1814–338 and NGC 6440 X–2 we do not find any candidate oscillation signals, and we place upper limits on the fractional Fourier amplitude of any coherent oscillations in our frequency search range of 7.8 ? 10–4 and 5.6 ? 10–3, respectively. We briefly discuss the prospects and sensitivity for similar searches with future, larger X-ray collecting area missions.

Tod Strohmayer; Simin Mahmoodifar

2014-01-01T23:59:59.000Z

65

Improved Description of One- and Two-Hole States after Electron Capture in 163 Holmium and the Determination of the Neutrino Mass  

E-Print Network (OSTI)

The atomic pair 163 Holmium and 163 Dysprosium$ seems due to the small Q value of about 2.3 to 2.8 keV the best case to determine the neutrino mass by electron capture. The bolometer spectrum measures the full deexcitation energy of Dysprosium by X rays, by Auger electrons and by the recoil of Holmium. The spectrum has an upper energy limit given by the Q value minus the neutrino mass. Till now this spectrum has been calculated allowing in Dysprosium excitations with 3s1/2, 3p1/2, 4s1/2, 4p1/2, 5s1/2, 5p1/2 holes only. Robertson calculated recently also the spectrum with two electron hole excitations in Dy. He took the probability for the excitation for the second electron hole from work of Carlson and Nestor for Z=54 Xenon. He claims, that the bolometer spectrum with two holes is "not well enough understood to permit a sensitive determination of the neutrino mass in this way." The purpose of the present work is to determine the theoretical bolometer spectrum with two hole excitations more reliably. In additi...

Faessler, Amand

2015-01-01T23:59:59.000Z

66

A 9 A single particle reconstruction from CCD captured images on a 200 kV electron cryomicroscope  

E-Print Network (OSTI)

-nanometer resolution. Ã? 2004 Elsevier Inc. All rights reserved. Keywords: CCD; Electron cryomicroscopy; Cryo-EM, Houston, TX 77030, USA b National Center for Macromolecular Imaging, Verna and Marrs McLean Department of Biochemistry and Molecular biology, Baylor College of Medicine, Houston, TX 77030, USA c Department

Jiang, Wen

67

Combining dark matter detectors and electron-capture sources to hunt for new physics in the neutrino sector  

E-Print Network (OSTI)

In this letter we point out the possibility to study new physics in the neutrino sector using dark matter detectors based on liquid xenon. These are characterized by very good spatial resolution and extremely low thresholds for electron recoil energies. When combined with a radioactive $\

Coloma, Pilar; Link, Jonathan M

2014-01-01T23:59:59.000Z

68

Measurement of electron capture and loss cross section for 41.67 MeV ??Br ions in H?  

E-Print Network (OSTI)

generated with averages of the estimates derived from the various methods of ana- lysis. Br+ was the incoming charge state. . . . . . . . . . . . 66 18 Comparison of the experimental data (denoted by the dots) with the pk curves generated from the cross... curves generated from the cross section values obtained after making alterations in the cross section estimates. Loss of three or more electrons was assumed negligible. Br+ was the in- coming charge state. 68 20 Comparison of the experimental data...

Burns, James Martin

1967-01-01T23:59:59.000Z

69

Electron Capture Strength for {60,62}Ni and {58,60,62,64}Ni(p,n){58,60,62,64}Cu reactions at 134.3 MeV  

E-Print Network (OSTI)

Background: The strength of electron capture for medium mass nuclei has a significant effect on the evolution of supernovae. There is insufficient knowledge of these strengths and very little data for important radioactive nuclei. Purpose: Determine whether it is feasible to obtain EC strength from studies of T_o+1 excitations in (p,n) reactions, and whether this might yield information for radioactive nuclei. Methods: Cross sections for the {58,60,62,64}Ni(p,n){58,60,62,64}Cu reactions were measured over the angular range of 0.3 deg to 11.6 deg at 134.3 MeV using the IUCF neutron time-of-flight facility. esults: The T_o+1 excitations in {60,62}Ni were identified by comparison with inelastic proton scattering spectra, their B(GT) were extracted, and the corresponding electron capture rates in supernovae were calculated. Data from the TRIUMF (n,p) experiments at 198 MeV were reanalyzed; the electron capture rates for the reanalyzed data are in moderately good agreement with the higher resolution (p,n) results, but differ in detail. The possibility of future measurements with radioactive nuclei was considered. Conclusions: It is possible to determine electron capturestrength from (p,n) experiments. This approach may make it possible to obtain electron capture strength for radioactive nuclei by studying (p,n) reactions in inverse kinematics.

N. Anantaraman; Sam M. Austin; B. A. Brown; G. M. Crawley; A. Galonsky; R. G. T. Zegers; B. D. Anderson; A. R. Baldwin; B. S. Flanders; R. Madey; J. W. Watson; C. C. Foster

2008-05-15T23:59:59.000Z

70

Electron capture and positron decay of Fr206 and Fr208 and the energy levels of Rn206 and Rn208  

Science Journals Connector (OSTI)

The isotopes Fr206 and Fr208 were produced by the reactions Ir(Ne20,xn)Fr206,208 and mass separated on-line. The electron-capture and positron decays to Rn206 and Rn208 were studied by collecting ? ray and internal conversion electron singles spectra as a function of decay time as well as ?-?, ?-e-, and ?-x ray coincidence spectra. The energies and many of the spins were determined for 18 excited, even parity states in Rn208 and for 10 excited, even parity states in Rn206. These nuclei appear to be excellent candidates for interpretation in terms of a weak coupling shell model. The energy levels were also compared to the predictions of the interacting boson approximation model.RADIOACTIVITY Fr206,208 from mass separated products of Irnat(Ne20,xn)Fr206,208. Measured E?, ICC, ?-?-t, e-?-t. Deduced levels E, J, ? in Rn206,208.

B. G. Ritchie; F. T. Avignone; III; H. K. Carter; R. L. Mlekodaj; E. H. Spejewski

1981-04-01T23:59:59.000Z

71

Electronic, structural, phonon dynamical, and CO{sub 2} capture properties of LiMZrO{sub 3} (M=Na, K) by ab initio thermodynamic investigation  

SciTech Connect

The electronic, structural and phonon properties of LiMZrO{sub 3} (M=Na, K) were investigated by the density functional theory and lattice phonon dynamics. Their thermodynamic properties for CO{sub 2} absorption/desorption were analyzed in comparison with the corresponding M{sub 2}ZrO{sub 3}. Two substituted configurations of LiMZrO{sub 3} were created from Li{sub 2}ZrO{sub 3}. Both types of LiNaZrO3 have direct band gaps with values of 3.84 eV and 3.49 eV respectively. While in the case of LiKZrO{sub 3}, one type has an indirect band gap of 3.79 eV between ? and M high symmetric points while another has a direct band gap of 3.12 eV. The phonon dispersions and phonon density of states of LiMZrO{sub 3} were calculated with the direct method. From the calculated thermodynamic properties of LiMZrO{sub 3} reacting with CO{sub 2}, our results showed that by doping Na into Li{sub 2}ZrO{sub 3}, the obtained new solid LiNaZrO{sub 3} has better performance as a CO{sub 2} sorbent applying to post-combustion capture technology. For K doping into Li{sub 2}ZrO{sub 3}, our calculated thermodynamic results showed that the new solid LiKZrO{sub 3} does not gain improvement on its CO{sub 2} capture performance because its regeneration temperature is much higher than Li{sub 2}ZrO{sub 3}.

Duan, Yuhua

2014-01-01T23:59:59.000Z

72

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

73

High-resolution measurement of the time-modulated orbital electron capture and of the $?^+$ decay of hydrogen-like $^{142}$Pm$^{60+}$ ions  

E-Print Network (OSTI)

The periodic time modulations, found recently in the two-body orbital electron-capture (EC) decay of both, hydrogen-like $^{140}$Pr$^{58+}$ and $^{142}$Pm$^{60+}$ ions, with periods near to 7s and amplitudes of about 20%, were re-investigated for the case of $^{142}$Pm$^{60+}$ by using a 245 MHz resonator cavity with a much improved sensitivity and time resolution. We observed that the exponential EC decay is modulated with a period $T = 7.11(11)$s, in accordance with a modulation period $T = 7.12(11)$ s as obtained from simultaneous observations with a capacitive pick-up, employed also in the previous experiments. The modulation amplitudes amount to $a_R = 0.107(24)$ and $a_P = 0.134(27)$ for the 245 MHz resonator and the capacitive pick-up, respectively. These new results corroborate for both detectors {\\it exactly} our previous findings of modulation periods near to 7s, though with {\\it distinctly smaller} amplitudes. Also the three-body $\\beta^+$ decays have been analyzed. For a supposed modulation period near to 7s we found an amplitude $a = 0.027(27)$, compatible with $a = 0$ and in agreement with the preliminary result $a = 0.030(30)$ of our previous experiment. These observations could point at weak interaction as origin of the observed 7s-modulation of the EC decay. Furthermore, the data suggest that interference terms occur in the two-body EC decay, although the neutrinos are not directly observed.

The Two-Body-Weak-Decays Collaboration; :; P. Kienle; F. Bosch; P. Bühler; T. Faestermann; Yu. A. Litvinov; M. S. Sanjari; D. B. Shubina; N. Winckler; D. Atanasov; H. Geissel; V. Ivanova; X. L. Yan; D. Boutin; C. Brandau; I. Dillmann; Ch. Dimopoulou; R. Hess; P. -M. Hillebrand; T. Izumikawa; R. Knöbel; J. Kurcewicz; N. Kuzminchuk; M. Lestinsky; S. A. Litvinov; X. W. Ma; L. Maier; M. Mazzocco; I. Mukha; C. Nociforo; F. Nolden; Ch. Scheidenberger; U. Spillmann; M. Steck; Th. Stöhlker; B. H. Sun; F. Suzaki; T. Suzuki; S. Yu. Torilov; M. Trassinelli; X. L. Tu; M. Wang; H. Weick; D. F. A. Winters; N. Winters; P. J. Woods; T. Yamaguchi; G. L. Zhang

2013-09-27T23:59:59.000Z

74

Gravitational-wave spin-down and stalling lower limits on the electrical resistivity of the accreted mountain in a millisecond pulsar  

E-Print Network (OSTI)

The electrical resistivity of the accreted mountain in a millisecond pulsar is limited by the observed spin-down rate of binary radio millisecond pulsars (BRMSPs) and the spins and X-ray fluxes of accreting millisecond pulsars (AMSPs). We find $\\eta \\ge 10^{-28}\\,\\mathrm{s}\\, (\\tau_\\mathrm{SD}/1\\,\\mathrm{Gyr})^{-0.8}$ (where $\\tau_\\mathrm{SD}$ is the spin-down age) for BRMSPs and $\\eta \\ge 10^{-25}\\,\\mathrm{s}\\,(\\dot{M}_\\mathrm{a}/\\dot{M}_\\mathrm{E})^{0.6}$ (where $\\dot{M}_\\mathrm{a}$ and $\\dot{M}_\\mathrm{E}$ are the actual and Eddington accretion rates) for AMSPs. These limits are inferred assuming that the mountain attains a steady state, where matter diffuses resistively across magnetic flux surfaces but is replenished at an equal rate by infalling material. The mountain then relaxes further resistively after accretion ceases. The BRMSP spin-down limit approaches the theoretical electron-impurity resistivity at temperatures $\\ga 10^5$ K for an impurity concentration of $\\sim 0.1$, while the AMSP stalling limit falls two orders of magnitude below the theoretical electron-phonon resistivity for temperatures above $10^8$ K. Hence BRMSP observations are already challenging theoretical resistivity calculations in a useful way. Next-generation gravitational-wave interferometers will constrain $\\eta$ at a level that will be competitive with electromagnetic observations.

Matthias Vigelius; Andrew Melatos

2010-05-13T23:59:59.000Z

75

J. Phys. B: At. Mol. Phys. 16 (1983) 1595-1603. Printed in Great Britain Atomic orbital expansion study of electron capture in  

E-Print Network (OSTI)

J. Phys. B: At. Mol. Phys. 16 (1983) 1595-1603. Printed in Great Britain Atomic orbital expansion of H+ and Hez+ ions with Li atoms. The calculated total and partial transfer cross sections constitute.1-2.0keVamu-' for HeZ++Li collisions. Total capture cross sections are found to agree well

Lin, Chii-Dong

76

Capturing carbon | EMSL  

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

Capturing carbon Capturing carbon New technology enables molecular-level insight into carbon sequestration Carbon sequestration is a potential solution for reducing greenhouse...

77

E-Print Network 3.0 - accreting millisecond x-ray Sample Search...  

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

of Technology (MIT) Collection: Physics 16 SEARCHING FOR MILLISECOND PULSARS IN GAMMA-RAY DATA USING THE FERMI LAT Summary: production is less limited (Lyne and Graham-Smith...

78

The Millisecond Magnetar Central Engine in short GRBs  

E-Print Network (OSTI)

One favored progenitor model for short duration gamma-ray bursts (SGRBs) is the coalescence of two neutron stars (NS-NS). One possible outcome of such a merger would be a rapidly spinning, strongly magnetized neutron star (known as a millisecond magnetar). These magnetars may be "supra-massive", implying they would collapse to black holes after losing centrifugal support due to magnetic dipole spindown. By systematically analyzing the BAT-XRT light curves of all short GRBs detected by {\\em swift}, we test how well the data are consistent with this central engine model of short GRBs. We find that the so-called "extended emission" observed with BAT in some short GRBs are fundamentally the same component as the "internal X-ray plateau" as observed in many short GRBs, which is defined as a plateau in the lightcurve followed by a very rapid drop. Based on how likely a short GRB hosts a magnetar, we characterize the entire {\\em Swift} short GRB sample into three categories: the "internal plateau" sample, the "exter...

Lü, Hou-Jun; Lei, Wei-Hua; Li, Ye; Lasky, Paul D

2015-01-01T23:59:59.000Z

79

Electron capture from H-2 to highly charged Th and Xe ions trapped at center-of-mass energies near 6 eV  

E-Print Network (OSTI)

Ions with charge states as high as 80+, produced in the Lawrence Livermore National Laboratory electron beam ion trap were extracted and transferred to a Penning ion trap (RETRAP). RETRAP was operated at cryogenic temperature in the field of a...

Weinberg, G.; Beck, B. R.; Steiger, J.; Church, David A.; McDonald, J.; Schneider, D.

1998-01-01T23:59:59.000Z

80

Carbon Capture and Storage  

Science Journals Connector (OSTI)

The main object of the carbon capture and storage (CCS) technologies is the...2...emissions produced in the combustion of fossil fuels such as coal, oil, or natural gas. CCS involves first the capture of the emit...

Ricardo Guerrero-Lemus; José Manuel Martínez-Duart

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "milliseconds electron capture" 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

PALM - Laser Capture Microdissection | EMSL  

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

PALM - Laser Capture Microdissection PALM - Laser Capture Microdissection This Laser Capture Microdissection system is equipped with 100 x objective lens for enriching distinct...

82

NETL: Carbon Capture FAQs  

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

How is CO2 captured? How is CO2 captured? Chilled Ammonia CO2 Capture Process Facility at American Electric Power's (AEP) Mountaineer Plant Chilled Ammonia CO2 Capture Process Facility at American Electric Power's (AEP) Mountaineer Plant Carbon dioxide (CO2) capture involves separating CO2 from other gases generated by industrial processes or burning fossil fuels. CO2 capture can remove as much as 95% of the CO2 from these processes. There are two major types of anthropogenic CO2 sources: mobile and stationary. Mobile sources include things like cars, trucks, trains, boats, and aircrafts that burn fossil fuels and generate CO2. Capturing CO2 from mobile sources is currently impractical. Stationary sources include power plants and industrial facilities that burn fossil fuels, as

83

Cryogenic Carbon Capture  

SciTech Connect

IMPACCT Project: SES is developing a process to capture CO2 from the exhaust gas of coal-fired power plants by desublimation - the conversion of a gas to a solid. Capturing CO2 as a solid and delivering it as a liquid avoids the large energy cost of CO2 gas compression. SES’ capture technology facilitates the prudent use of available energy resources. Coal is our most abundant energy resource and is an excellent fuel for baseline power production. SES capture technology can capture 99% of the CO2 emissions in addition to a wide range of other pollutants more efficiently and at lower costs than existing capture technologies. SES’ capture technology can be readily added to our existing energy infrastructure.

None

2010-07-15T23:59:59.000Z

84

Millisecond switching in solid state electrochromic polymer devices fabricated from ionic self-assembled multilayers  

E-Print Network (OSTI)

Millisecond switching in solid state electrochromic polymer devices fabricated from ionic self The electrochromic switching times of solid state conducting polymer devices fabricated by the ionic self shown to decrease with the active area of the electrochromic device suggesting that even faster

Heflin, Randy

85

Muon Capture on the Proton  

E-Print Network (OSTI)

The MuCap experiment measures the singlet rate Lambda_S of muon capture on the proton. A negative muon beam is stopped in a time projection chamber filled with ultra-pure hydrogen gas at 10 bar and room temperature. In combination with the surrounding decay electron detectors, the lifetime of muons in hydrogen can be measured to determine LS to a final precision of 1%. The capture rate is then used to derive the nucleon's pseudoscalar form factor gP. Our first-stage result, gP= 7.3\\pm1., will soon be updated with the final analysis of the full statistics reducing the error by a factor of ~2.

P. Winter

2011-10-23T23:59:59.000Z

86

The Motion Capture Pipeline.  

E-Print Network (OSTI)

?? Motion Capture is an essential part of a world full of digital effects in movies and games. Understanding the pipelines between software is a… (more)

Holmboe, Dennis

2008-01-01T23:59:59.000Z

87

Capturing Energy Upgrades  

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

Provides an overview of how to capture the value of energy efficiency upgrades in the real estate market, from CNT Energy.

88

Reversible Acid Gas Capture  

SciTech Connect

Pacific Northwest National Laboratory scientist David Heldebrant demonstrates how a new process called reversible acid gas capture works to pull carbon dioxide out of power plant emissions.

Dave Heldebrant

2009-08-01T23:59:59.000Z

89

Reversible Acid Gas Capture  

ScienceCinema (OSTI)

Pacific Northwest National Laboratory scientist David Heldebrant demonstrates how a new process called reversible acid gas capture works to pull carbon dioxide out of power plant emissions.

Dave Heldebrant

2012-12-31T23:59:59.000Z

90

How Carbon Capture Works  

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

Carbon capture, utilization and storage is a process that captures carbon dioxide emissions from sources like coal-fired power plants and either reuses or stores it so it will not enter the atmosphere. We'll break down the process step by step so you can learn how this technology can help us lower our carbon pollution.

91

Neutron Capture Therapy  

Science Journals Connector (OSTI)

... . Only those elements which have a high thermal-neutron capture cross-section, such as boron-10, lithium-6, and uranium-235, are useful. This suggestion was first put forward ... was first put forward in 1936 by Locher. The utilization of thermal neutron capture by boron-10 for the treatment of human-brain tumours, chiefly glioblastoma multiforme, has been under investigation ...

1961-09-23T23:59:59.000Z

92

High-power electron beam tests of a liquid-lithium target and characterization study of 7Li(p,n) near-threshold neutrons for accelerator-based boron neutron capture therapy  

Science Journals Connector (OSTI)

Abstract A compact Liquid-Lithium Target (LiLiT) was built and tested with a high-power electron gun at Soreq Nuclear Research Center (SNRC). The target is intended to demonstrate liquid-lithium target capabilities to constitute an accelerator-based intense neutron source for Boron Neutron Capture Therapy (BNCT) in hospitals. The lithium target will produce neutrons through the 7Li(p,n)7Be reaction and it will overcome the major problem of removing the thermal power >5 kW generated by high-intensity proton beams, necessary for sufficient therapeutic neutron flux. In preliminary experiments liquid lithium was flown through the target loop and generated a stable jet on the concave supporting wall. Electron beam irradiation demonstrated that the liquid-lithium target can dissipate electron power densities of more than 4 kW/cm2 and volumetric power density around 2 MW/cm3 at a lithium flow of ~4 m/s, while maintaining stable temperature and vacuum conditions. These power densities correspond to a narrow (?=~2 mm) 1.91 MeV, 3 mA proton beam. A high-intensity proton beam irradiation (1.91–2.5 MeV, 2 mA) is being commissioned at the SARAF (Soreq Applied Research Accelerator Facility) superconducting linear accelerator. In order to determine the conditions of LiLiT proton irradiation for BNCT and to tailor the neutron energy spectrum, a characterization of near threshold (~1.91 MeV) 7Li(p,n) neutrons is in progress based on Monte-Carlo (MCNP and Geant4) simulation and on low-intensity experiments with solid LiF targets. In-phantom dosimetry measurements are performed using special designed dosimeters based on CR-39 track detectors.

S. Halfon; M. Paul; A. Arenshtam; D. Berkovits; D. Cohen; I. Eliyahu; D. Kijel; I. Mardor; I. Silverman

2014-01-01T23:59:59.000Z

93

Electron  

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

to measure the electron density gradient and its fluctuations. Two separate laser beams with slight spatial offset and frequency difference are coupled into a single mixer...

94

Muon Capture in Gaseous Deuterium  

Science Journals Connector (OSTI)

We report the results of an experiment performed to measure the muon nuclear capture rate by free deuterons. The muons were slowed down in ultrapure gaseous hydrogen at 7.6 atm and 293 °K, containing 5% of deuterium. A special target was used, in which a system of gas proportional counters, working with the (H2 + D2) gaseous mixture itself, was operating. Neutrons from the capture reactions were detected using liquid scintillation counters, and the ?-ray background was eliminated by pulse-shape discrimination. The experimental result is ?exp=(445±60) sec-1, which is consistent with muon-electron universality and with the assumption that the nuclear capture proceeds from the doublet spin state of the ?d muonic atoms. Combining the present experimental value with a previous result obtained with a liquid-hydrogen deuterated target, one obtains a ratio between the axial-vector and vector coupling constants given by gA,?gV,?=-1.35±0.1.

A. Bertin; A. Vitale; A. Placci; E. Zavattini

1973-12-01T23:59:59.000Z

95

IMPACCT: Carbon Capture Technology  

SciTech Connect

IMPACCT Project: IMPACCT’s 15 projects seek to develop technologies for existing coal-fired power plants that will lower the cost of carbon capture. Short for “Innovative Materials and Processes for Advanced Carbon Capture Technologies,” the IMPACCT Project is geared toward minimizing the cost of removing carbon dioxide (CO2) from coal-fired power plant exhaust by developing materials and processes that have never before been considered for this application. Retrofitting coal-fired power plants to capture the CO2 they produce would enable greenhouse gas reductions without forcing these plants to close, shifting away from the inexpensive and abundant U.S. coal supply.

None

2012-01-01T23:59:59.000Z

96

Chaos and Tidal Capture  

E-Print Network (OSTI)

We review the tidal capture mechanism for binary formation, an important process in globular cluster cores and perhaps open cluster cores. Tidal capture binaries may be the precursors for some of the low-mass X-ray binaries observed in abundance in globular clusters. They may also play an important role in globular cluster dynamics. We summarize the chaos model for tidal interaction (Mardling 1995, ApJ, 450, 722, 732), and discuss how this affects our understanding of the circularization process which follows capture.

Rosemary A. Mardling

1995-12-07T23:59:59.000Z

97

Copper CMP Modeling: Millisecond Scale Adsorption Kinetics of BTA in Glycine-Containing Solutions at pH 4  

E-Print Network (OSTI)

Society H1153 Copper CMP Modeling: Millisecond Scaleon the surface of a micro-copper electrode in pH 4 aqueousa Cu?I?BTA monolayer on the copper surface. Based on these

Choi, Seungchoun; Tripathi, Shantanu; Dornfeld, David; Doyle, F M

2010-01-01T23:59:59.000Z

98

The Parkes multibeam pulsar survey: VII. Timing of four millisecond pulsars and the underlying spin period distribution of the Galactic millisecond pulsar population  

E-Print Network (OSTI)

We present timing observations of four millisecond pulsars discovered in the Parkes 20-cm multibeam pulsar survey of the Galactic plane. PSRs J1552-4937 and J1843-1448 are isolated objects with spin periods of 6.28 and 5.47 ms respectively. PSR J1727-2946 is in a 40-day binary orbit and has a spin period of 27 ms. The 4.43-ms pulsar J1813-2621 is in a circular 8.16-day binary orbit around a low-mass companion star with a minimum companion mass of 0.2 solar masses. Combining these results with detections from five other Parkes multibeam surveys, gives a well-defined sample of 56 pulsars with spin periods below 20 ms. We develop a likelihood analysis to constrain the functional form which best describes the underlying distribution of spin periods for millisecond pulsars. The best results were obtained with a log-normal distribution. A gamma distribution is less favoured, but still compatible with the observations. Uniform, power-law and Gaussian distributions are found to be inconsistent with the data. Galactic...

Lorimer, D R; Manchester, R N; Possenti, A; Lyne, A G; McLaughlin, M A; Kramer, M; Hobbs, G; Stairs, I H; Burgay, M; Eatough, R P; Keith, M J; Faulkner, A J; D'Amico, N; Camilo, F; Corongiu, A; Crawford, F

2015-01-01T23:59:59.000Z

99

Capture.PDF  

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

Barriers for Carbon Capture, Storage and Sequestration Barriers for Carbon Capture, Storage and Sequestration Sarah M. Forbes, National Energy Technology Laboratory November, 2002 The success of carbon capture, storage and sequestration as a greenhouse gas mitigation strategy will be, in part, dependent on the regulatory framework used to govern its implementation. Creating a science-based regulatory framework that is designed with enough flexibility to encourage greenhouse gas offset activity, effective means of measuring the costs of taking action to reduce greenhouse gas emissions, and ample protection for human and ecosystem health may prove challenging. For the purposes of this paper we will assume that there is an existing incentive to capture, store and sequester carbon and focus on how to regulate the process. Accounting practices and

100

Introduction to Carbon Capture  

Science Journals Connector (OSTI)

Chapters 7–9 examine nontraditional separation technologies that in the most ideal sense may be considered carbon-neutral. The topics covered in these chapters include the role that algae plays in CO2 capture, CO

Prof. Jennifer Wilcox

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "milliseconds electron capture" 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

ATK - Supersonic Carbon Capture  

SciTech Connect

ATK and ACEnt Laboratories, with the help of ARPA-E funding, have taken an aerospace problem, supersonic condensation, and turned it into a viable clean energy solution for carbon capture.

Castrogiovanni, Anthony (ACEnT Laboratories, President and CEO) [ACEnT Laboratories, President and CEO; Calayag, Bon (ATK, Program Manager) [ATK, Program Manager

2014-03-05T23:59:59.000Z

102

Striving To Capture Carbon  

Science Journals Connector (OSTI)

Striving To Capture Carbon ... Energy ministers from around the world met in Washington, D.C., for three days earlier this month to wrestle with how to reenergize efforts to cut carbon emissions from coal-fired power plants. ... Their solution, not surprisingly, is a rapid acceleration of R&D for technologies that capture and sequester underground carbon dioxide emitted by power plants, refineries, and industrial manufacturers that burn fossil fuels. ...

JEFF JOHNSON

2013-11-25T23:59:59.000Z

103

Radiative muon capture  

Science Journals Connector (OSTI)

It is shown by relating the transition amplitude of radiative muon capture to that of radiative pion capture, that the transition amplitude of radiative muon capture proposed recently by Hwang and Primakoff differs from the others mainly by Low's counter terms. Despite the fact that the "original" transition amplitude does not violate seriously the conservation of the hadronic electromagnetic current, Low's counter terms, as introduced via Low's prescription to secure the presence of small conservation-of-hadronic-electromagnetic-current-breaking terms, are confirmed to be of numerical importance. Further, it is found in the "elementary-particle" treatment of radiative muon capture that the uncertainty arising from the nuclear structure can be reduced to become negligible. Therefore, an exclusive radiative muon capture experiment can in principle differentiate the Hwang-Primakoff theory from the others and yet provide a comprehensive test of partial conservation of axial-vector current.RADIOACTIVITY Theories of radiative muon capture, linearity hypothesis versus Low's prescription; nuclear structure and PCAC.

W -Y. P. Hwang

1980-07-01T23:59:59.000Z

104

Electron  

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

Electron thermal transport within magnetic islands in the reversed-field pinch a... H. D. Stephens, 1,b D. J. Den Hartog, 1,3 C. C. Hegna, 1,2 and J. A. Reusch 1 1 Department of...

105

Carbon Capture Research and Development  

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

Center Lawrence Berkeley National Laboratory Research Institute of Innovative Energy Carbon Capture Research and Development Carbon capture and storage from fossil-based power...

106

Booster Subharmonic RF Capture Design  

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

Booster Subharmonic RF Capture Design 1 Booster Subharmonic RF Capture Design Nicholas S. Sereno, 7102002 1.0 Motivation and Requirements Successful operation of the APS storage...

107

Electron  

Science Journals Connector (OSTI)

Absolute grand total cross sections (TCSs) for electron-disilane (Si2H6) scattering have been measured over the energy range from 1 to 370 eV in a linear transmission experiment. The low-energy TCS is dominated by a broad resonant-like enhancement. In the region of the maximum the present grand TCS values appeared to be distinctly lower than previously reported integral elastic cross section data. A comparison of total electron scattering cross sections for the two simplest silicon hydrides and relevant hydrocarbons is given.

Czeslaw Szmytkowski; Pawel Mozejko; Grzegorz Kasperski

2001-01-01T23:59:59.000Z

108

CAPTURE DOCUMENT ORAUTEAM  

Office of Legacy Management (LM)

DATA DATA CAPTURE DOCUMENT ORAUTEAM ---- Dose Reconstruction ~v~:7 DISCOVERY AND REVIEW dA'~ Project for NIOSH The attached document may contain Privacy Act data. This information is protected by the Privacy Act, 5 U.S.C. §552a; disclosure to any third party without written consent of the individual to whom the information pertains is strictly prohibited. Data Capture Team or Other ORAU Team Member Capturing Data: Complete all information that applies to the data/document being submitted lor uploading to the Site Research Database (SRDB), attach this lonm to the lront olthe document, and send to: ORAU Team, Attention: SRDB Uploading, 4850 Smith Rd., Suite 200, Cincinnati, Ohio 45212. I ~ -!-R"e"guestor and Reviewer 1. Data Requestor: RSET Group 2. Reviewer Name (if different from Requestor): Don Morris 3. Target Data: Document Specified by Requestor Any relevant

109

Motion Capture Technologies Jessica Hodgins  

E-Print Network (OSTI)

a few dof) #12;Production Pipeline #12;What is captured? · Dynamic motions? House of Moves #12;What is captured? · Scale? Motion Analysis #12;What is captured? · Non-rigid objects? House of Moves #12;What is captured? · Props often cause problems ­ Ball in pingpong ­ Fly fishing ­ Sword · Passive behaviors

Treuille, Adrien

110

Adiabatic capture and debunching  

SciTech Connect

In the study of beam preparation for the g-2 experiment, adiabatic debunching and adiabatic capture are revisited. The voltage programs for these adiabbatic processes are derived and their properties discussed. Comparison is made with some other form of adiabatic capture program. The muon g-2 experiment at Fermilab calls for intense proton bunches for the creation of muons. A booster batch of 84 bunches is injected into the Recycler Ring, where it is debunched and captured into 4 intense bunches with the 2.5-MHz rf. The experiment requires short bunches with total width less than 100 ns. The transport line from the Recycler to the muon-production target has a low momentum aperture of {approx} {+-}22 MeV. Thus each of the 4 intense proton bunches required to have an emittance less than {approx} 3.46 eVs. The incoming booster bunches have total emittance {approx} 8.4 eVs, or each one with an emittance {approx} 0.1 eVs. However, there is always emittance increase when the 84 booster bunches are debunched. There will be even larger emittance increase during adiabatic capture into the buckets of the 2.5-MHz rf. In addition, the incoming booster bunches may have emittances larger than 0.1 eVs. In this article, we will concentrate on the analysis of the adiabatic capture process with the intention of preserving the beam emittance as much as possible. At this moment, beam preparation experiment is being performed at the Main Injector. Since the Main Injector and the Recycler Ring have roughly the same lattice properties, we are referring to adiabatic capture in the Main Injector instead in our discussions.

Ng, K.Y.; /Fermilab

2012-03-01T23:59:59.000Z

111

Muon Capture by Deuterons  

Science Journals Connector (OSTI)

Rates of muon capture from the separate ?d hyperfine states are computed. The dependence of the measurement of effective coupling constants on the neutron energy is explicitly demonstrated. The calculation of the neutron energy spectra includes mainly the following refinements: (1) use of two-nucleon wave functions with hard core, (2) corrections for the target-proton momentum, and (3) inclusion of certain induced pseudoscalar terms. The capture rates obtained are 334 and 15 sec-1 for the ?d doublet and quartet states, respectively.

I-T. Wang

1965-09-20T23:59:59.000Z

112

Carbon Smackdown: Carbon Capture  

SciTech Connect

In this July 9, 2010 Berkeley Lab summer lecture, Lab scientists Jeff Long of the Materials Sciences and Nancy Brown of the Environmental Energy Technologies Division discuss their efforts to fight climate change by capturing carbon from the flue gas of power plants, as well as directly from the air

Jeffrey Long

2010-07-12T23:59:59.000Z

113

Muon capture in hydrogen  

E-Print Network (OSTI)

Theoretical difficulties in reconciling the measured rates for ordinary and radiative muon capture are discussed, based on heavy-baryon chiral perturbation theory. We also examine ambiguity in our analysis due to the formation of p$\\mu$p molecules in the liquid hydrogen target.

S. Ando; F. Myhrer; K. Kubodera

2001-10-30T23:59:59.000Z

114

Neutron capture therapies  

DOE Patents (OSTI)

In one embodiment there is provided an application of the .sup.10 B(n,.alpha.).sup.7 Li nuclear reaction or other neutron capture reactions for the treatment of rheumatoid arthritis. This application, called Boron Neutron Capture Synovectomy (BNCS), requires substantially altered demands on neutron beam design than for instance treatment of deep seated tumors. Considerations for neutron beam design for the treatment of arthritic joints via BNCS are provided for, and comparisons with the design requirements for Boron Neutron Capture Therapy (BNCT) of tumors are made. In addition, exemplary moderator/reflector assemblies are provided which produce intense, high-quality neutron beams based on (p,n) accelerator-based reactions. In another embodiment there is provided the use of deuteron-based charged particle reactions to be used as sources for epithermal or thermal neutron beams for neutron capture therapies. Many d,n reactions (e.g. using deuterium, tritium or beryllium targets) are very prolific at relatively low deuteron energies.

Yanch, Jacquelyn C. (Cambridge, MA); Shefer, Ruth E. (Newton, MA); Klinkowstein, Robert E. (Winchester, MA)

1999-01-01T23:59:59.000Z

115

Supercomputers Capture Turbulence in the Solar Wind  

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

Supercomputers Capture Supercomputers Capture Turbulence in the Solar Wind News & Publications ESnet in the News ESnet News Media & Press Publications and Presentations Galleries ESnet Awards and Honors Contact Us Technical Assistance: 1 800-33-ESnet (Inside the US) 1 800-333-7638 (Inside the US) 1 510-486-7600 (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net Supercomputers Capture Turbulence in the Solar Wind Berkeley Lab visualizations could help scientists forecast destructive space weather December 16, 2013 | Tags: ESnet News, National Energy Research Scientific Computing Linda Vu, +1 510 495 2402, lvu@lbl.gov eddies1.jpg This visualization zooms in on current sheets revealing the "cascade of turbulence" in the solar wind occurring down to electron scales. This is

116

Electronic  

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

contribution contribution to friction on GaAs: An atomic force microscope study Yabing Qi, 1,2 J. Y. Park, 2 B. L. M. Hendriksen, 2 D. F. Ogletree, 2 and M. Salmeron 2,3 1 Applied Science and Technology Graduate Group, University of California, Berkeley, California 94720, USA 2 Materials Sciences Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720, USA 3 Department of Materials Sciences and Engineering, University of California, Berkeley, California 94720, USA ͑Received 23 January 2008; revised manuscript received 11 April 2008; published 7 May 2008͒ The electronic contribution to friction at semiconductor surfaces was investigated by using a Pt-coated tip with 50 nm radius in an atomic force microscope sliding against an n-type GaAs͑100͒ substrate. The GaAs surface was covered by an approximately 1 nm thick oxide layer. Charge accumulation

117

Radiative Muon Capture  

Science Journals Connector (OSTI)

The theory of radiative muon capture is developed. The discussion includes both parity conserving and nonconserving effects. The Gell-Mann weak magnetic term and the induced pseudoscalar are included, along with comparable relativistic effects in the nucleons. The theory is applied to light nuclei and especially to the radiative Godfrey reaction ?-+C126??+?+B125. An experiment to detect the induced pseudoscalar directly is proposed.

Jeremy Bernstein

1959-08-01T23:59:59.000Z

118

A PARALLAX DISTANCE AND MASS ESTIMATE FOR THE TRANSITIONAL MILLISECOND PULSAR SYSTEM J1023+0038  

SciTech Connect

The recently discovered transitional millisecond pulsar system J1023+0038 exposes a crucial evolutionary phase of recycled neutron stars for multiwavelength study. The system, comprising the neutron star itself, its stellar companion, and the surrounding medium, is visible across the electromagnetic spectrum from the radio to X-ray/gamma-ray regimes and offers insight into the recycling phase of millisecond pulsar evolution. Here, we report on multiple-epoch astrometric observations with the Very Long Baseline Array (VLBA) which give a system parallax of 0.731 {+-} 0.022 milliarcseconds (mas) and a proper motion of 17.98 {+-} 0.05 mas yr{sup -1}. By combining our results with previous optical observations, we are able to use the parallax distance of 1368{sup +42}{sub -{sub 39}} pc to estimate the mass of the pulsar to be 1.71 {+-} 0.16 M{sub Sun }, and we are also able to measure the three-dimensional space velocity of the system to be 126 {+-} 5 km s{sup -1}. Despite the precise nature of the VLBA measurements, the remaining {approx}3% distance uncertainty dominates the 0.16 M{sub Sun} error on our mass estimate.

Deller, A. T. [Netherlands Institute for Radio Astronomy (ASTRON), 7990-AA Dwingeloo (Netherlands); Archibald, A. M.; Kaspi, V. M. [Department of Physics, McGill University, 3600 University Street, Montreal, QC H3A 2T8 (Canada); Brisken, W. F. [National Radio Astronomy Observatory, Socorro, NM 87801 (United States); Chatterjee, S. [Astronomy Department, Cornell University, Ithaca, NY 14853 (United States); Janssen, G. H.; Lyne, A. G.; Stappers, B. [Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Manchester M13 9PL (United Kingdom); Lorimer, D.; McLaughlin, M. A. [Department of Physics, West Virginia University, Morgantown, WV 26506 (United States); Ransom, S. [National Radio Astronomy Observatory, Charlottesville, VA 22903 (United States); Stairs, I. H. [Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1 (Canada)

2012-09-10T23:59:59.000Z

119

Muon Capture and Nuclear Structure  

Science Journals Connector (OSTI)

We have studied the fundamental muon-nucleon interaction from the muon capture in gaseous and molecular hydrogen and ... problem upon the knowledge of the former from muon captures in C12 and O16.

M. Morita; H. Ohtsubo; A. Fujii

1970-01-01T23:59:59.000Z

120

Capturing the Daylight Dividend  

SciTech Connect

Capturing the Daylight Dividend conducted activities to build market demand for daylight as a means of improving indoor environmental quality, overcoming technological barriers to effective daylighting, and informing and assisting state and regional market transformation and resource acquisition program implementation efforts. The program clarified the benefits of daylight by examining whole building systems energy interactions between windows, lighting, heating, and air conditioning in daylit buildings, and daylighting's effect on the human circadian system and productivity. The project undertook work to advance photosensors, dimming systems, and ballasts, and provided technical training in specifying and operating daylighting controls in buildings. Future daylighting work is recommended in metric development, technology development, testing, training, education, and outreach.

Peter Boyce; Claudia Hunter; Owen Howlett

2006-04-30T23:59:59.000Z

Note: This page contains sample records for the topic "milliseconds electron capture" 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

How Carbon Capture Works | Department of Energy  

Energy Savers (EERE)

past two decades. Carbon capture, utilization and storage (CCUS) -- also referred to as carbon capture, utilization and sequestration -- is a process that captures carbon dioxide...

122

The birth of radio millisecond pulsars and their high-energy signature  

E-Print Network (OSTI)

Millisecond pulsars (MSPs) are thought to born in low-mass X-ray binaries when the neutron star has gained enough angular momentum from the accreting materials of its companion star. It is generally believed that a radio MSP is born when the neutron star stops accreting and enters a rotation-powered state. Exactly what happens during the transition time was poorly understood until a year ago. In the past year, observations have revealed a few objects that not only switched from one state to the other (as predicted in the above picture), but also have swung between the two states within weeks to years. In this work, we present observations of two of these transition objects (PSR J1023+0038 and XSS J12270-4859) and a theoretical framework that tries to explain their high-energy radiation.

Tam, P H T; Kong, A K H; Takata, J; Leung, G C K; Cheng, K S; Hui, C Y

2014-01-01T23:59:59.000Z

123

Motion capture och skräck; Motion capture and horror.  

E-Print Network (OSTI)

?? Det här arbetet syftade till att undersöka om de skakningar och ryck som uppstår vid en dålig motion capture-inspelning, kan användas till fördel i… (more)

Åsén, Kristina Helene

2014-01-01T23:59:59.000Z

124

Application note : using open source schematic capture tools with Xyce.  

SciTech Connect

The development of the XyceTM Parallel Electronic Simulator has focused entirely on the creation of a fast, scalable simulation tool, and has not included any schematic capture or data visualization tools. This application note will describe how to use the open source schematic capture tool gschem and its associated netlist creation tool gnetlist to create basic circuit designs for Xyce, and how to access advanced features of Xyce that are not directly supported by either gschem or gnetlist.

Russo, Thomas V.

2013-08-01T23:59:59.000Z

125

Fragment capture device  

DOE Patents (OSTI)

A fragment capture device for use in explosive containment. The device comprises an assembly of at least two rows of bars positioned to eliminate line-of-sight trajectories between the generation point of fragments and a surrounding containment vessel or asset. The device comprises an array of at least two rows of bars, wherein each row is staggered with respect to the adjacent row, and wherein a lateral dimension of each bar and a relative position of each bar in combination provides blockage of a straight-line passage of a solid fragment through the adjacent rows of bars, wherein a generation point of the solid fragment is located within a cavity at least partially enclosed by the array of bars.

Payne, Lloyd R. (Los Lunas, NM); Cole, David L. (Albuquerque, NM)

2010-03-30T23:59:59.000Z

126

The capture into parametric autoresonance  

E-Print Network (OSTI)

In this work we show that the capture into parametric resonance may be explained as the pitchfork bifurcation in the primary parametric resonance equation. We prove that the solution close to the moment of the capture is described by the Painleve-2 equation. We obtain the connection formulas for the asymptotic solution of the primary parametric resonance equation before and after the capture using the matching of the asymptotic expansions.

O M Kiselev; S G Glebov

2005-11-04T23:59:59.000Z

127

Muon Capture by the Triton  

Science Journals Connector (OSTI)

Muon capture by the triton is investigated. "Exact" ground-state wave functions extracted from realistic nucleon-nucleon interactions are incorporated in the calculations. The treatment involves non-energy-weighted sum rules and explicit introduction of the three-neutron final state. Beside results on muon capture by He3, a lower limit is established for the muon-capture rate in H3.

J. Torre; Cl. Gignoux; G. Goulard

1978-02-20T23:59:59.000Z

128

Supercomputers Capture Turbulence in the Solar Wind  

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

Supercomputers Supercomputers Capture Turbulence in the Solar Wind Supercomputers Capture Turbulence in the Solar Wind Berkeley Lab visualizations could help scientists forecast destructive space weather December 16, 2013 Linda Vu, +1 510 495 2402, lvu@lbl.gov eddies1.jpg This visualization zooms in on current sheets revealing the "cascade of turbulence" in the solar wind occurring down to electron scales. This is a phenomenon common in fluid dynamics-turbulent energy injected at large eddies is transported to successively smaller scales until it is dissipated as heat. (Image by Burlen Loring, Berkeley Lab) As inhabitants of Earth, our lives are dominated by weather. Not just in the form of rain and snow from atmospheric clouds, but also a sea of charged particles and magnetic fields generated by a star sitting 93

129

Industrial Carbon Capture Project Selections  

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

Industrial Carbon Capture Project SelectionsSeptember 2, 2010These projects have been selected for negotiation of awards; final award amounts may vary.

130

Resource capture by single leaves  

SciTech Connect

Leaves show a variety of strategies for maximizing CO{sub 2} and light capture. These are more meaningfully explained if they are considered in the context of maximizing capture relative to the utilization of water, nutrients and carbohydrates reserves. There is considerable variation between crops in their efficiency of CO{sub 2} and light capture at the leaf level. Understanding of these mechanisms indicate some ways in which efficiency of resource capture could be level cannot be meaningfully considered without simultaneous understanding of implications at the canopy level. 36 refs., 5 figs., 1 tab.

Long, S.P.

1992-05-01T23:59:59.000Z

131

Air Capture Introduction and Overview  

E-Print Network (OSTI)

first." It is much cheaper to capture CO2 from the flue gas of a coal power plant than from ambient air largely eliminated centralized sources of CO2 emissions, especially at coal and natural gas power plants of a facility that captures CO2 from the flue gas of a coal power plant, keeping all possible assumptions

132

Capturing Carbon Dioxide From Air  

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

Capturing Carbon Dioxide From Air Capturing Carbon Dioxide From Air Klaus S. Lackner (kl2010@columbia.edu; 212-854-0304) Columbia University 500 West 120th Street New York, NY 10027 Patrick Grimes (pgrimes@worldnet.att.net; 908-232-1134) Grimes Associates Scotch Plains, NJ 07076 Hans-J. Ziock (ziock@lanl.gov; 505-667-7265) Los Alamos National Laboratory P.O.Box 1663 Los Alamos, NM 87544 Abstract The goal of carbon sequestration is to take CO 2 that would otherwise accumulate in the atmosphere and put it in safe and permanent storage. Most proposed methods would capture CO 2 from concentrated sources like power plants. Indeed, on-site capture is the most sensible approach for large sources and initially offers the most cost-effective avenue to sequestration. For distributed, mobile sources like cars, on-board capture at affordable cost would not be

133

NETL: Industrial Capture & Storage  

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

Industrial Capture & Storage Industrial Capture & Storage Technologies Industrial Capture & Storage The United States Department of Energy, National Energy Technology Laboratory (DOE/NETL, or DOE) is currently implementing a program titled "Carbon Capture and Sequestration from Industrial Sources and Innovative Concepts for Beneficial CO2 Use." This CO2 Capture and Sequestration (CCS) and CO2 use program is a cost-shared collaboration between the Government and industry whose purpose is to increase investment in clean industrial technologies and sequestration projects. In accordance with the American Recovery and Reinvestment Act of 2009, and Section 703 of Public Law 110-140, DOE's two specific objectives are to demonstrate: (1) Large-Scale Industrial CCS projects from industrial sources, and (2) Innovative Concepts for beneficial CO2 use.

134

RADIO DETECTION OF THE FERMI-LAT BLIND SEARCH MILLISECOND PULSAR J1311-3430  

SciTech Connect

We report the detection of radio emission from PSR J1311-3430, the first millisecond pulsar (MSP) discovered in a blind search of Fermi Large Area Telescope (LAT) gamma-ray data. We detected radio pulsations at 2 GHz, visible for <10% of {approx}4.5 hr of observations using the Green Bank Telescope (GBT). Observations at 5 GHz with the GBT and at several lower frequencies with Parkes, Nancay, and the Giant Metrewave Radio Telescope resulted in non-detections. We also report the faint detection of a steep spectrum continuum radio source (0.1 mJy at 5 GHz) in interferometric imaging observations with the Jansky Very Large Array. These detections demonstrate that PSR J1311-3430 is not radio quiet and provide additional evidence that radio-quiet MSPs are rare. The radio dispersion measure of 37.8 pc cm{sup -3} provides a distance estimate of 1.4 kpc for the system, yielding a gamma-ray efficiency of 30%, typical of LAT-detected MSPs. We see apparent excess delay in the radio pulses as the pulsar appears from eclipse and we speculate on possible mechanisms for the non-detections of the pulse at other orbital phases and observing frequencies.

Ray, P. S.; Wood, K. S. [Space Science Division, Naval Research Laboratory, Washington, DC 20375-5352 (United States); Ransom, S. M. [National Radio Astronomy Observatory (NRAO), Charlottesville, VA 22903 (United States); Cheung, C. C. [National Academy of Sciences, Washington, DC 20001 (United States); Giroletti, M. [INAF Istituto di Radioastronomia, I-40129 Bologna (Italy); Cognard, I. [Laboratoire de Physique et Chimie de l'Environnement, LPCE UMR 6115 CNRS, F-45071 Orleans Cedex 02 (France); Camilo, F. [Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027 (United States); Bhattacharyya, B. [Inter-University Centre for Astronomy and Astrophysics, Pune 411 007 (India); Roy, J. [National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Pune 411 007 (India); Romani, R. W.; Kerr, M. [W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305 (United States); Ferrara, E. C. [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Guillemot, L.; Kramer, M. [Max-Planck-Institut fuer Radioastronomie, Auf dem Huegel 69, D-53121 Bonn (Germany); Johnston, S.; Keith, M. [CSIRO Astronomy and Space Science, Australia Telescope National Facility, Epping NSW 1710 (Australia); Pletsch, H. J. [Max-Planck-Institut fuer Gravitationsphysik, Albert-Einstein-Institut, D-30167 Hannover (Germany); Saz Parkinson, P. M., E-mail: Paul.Ray@nrl.navy.mil [Santa Cruz Institute for Particle Physics, Department of Physics and Department of Astronomy and Astrophysics, University of California at Santa Cruz, Santa Cruz, CA 95064 (United States)

2013-01-20T23:59:59.000Z

135

TWO MILLISECOND PULSARS DISCOVERED BY THE PALFA SURVEY AND A SHAPIRO DELAY MEASUREMENT  

SciTech Connect

We present two millisecond pulsar discoveries from the PALFA survey of the Galactic plane with the Arecibo telescope. PSR J1955+2527 is an isolated pulsar with a period of 4.87 ms, and PSR J1949+3106 has a period of 13.14 ms and is in a 1.9 day binary system with a massive companion. Their timing solutions, based on 4 years of timing measurements with the Arecibo, Green Bank, Nancay, and Jodrell Bank telescopes, allow precise determination of spin and astrometric parameters, including precise determinations of their proper motions. For PSR J1949+3106, we can clearly detect the Shapiro delay. From this we measure the pulsar mass to be 1.47{sup +0.43}{sub -0.31} M{sub Sun }, the companion mass to be 0.85{sup +0.14}{sub -0.11} M{sub Sun }, and the orbital inclination to be i = 79.9{sup -1.9}{sub +1.6} deg, where uncertainties correspond to {+-}1{sigma} confidence levels. With continued timing, we expect to also be able to detect the advance of periastron for the J1949+3106 system. This effect, combined with the Shapiro delay, will eventually provide very precise mass measurements for this system and a test of general relativity.

Deneva, J. S.; Camilo, F. [Arecibo Observatory, HC3 Box 53995, Arecibo, PR 00612 (United States); Freire, P. C. C.; Champion, D. J.; Desvignes, G. [Max-Planck-Institut fuer Radioastronomie, D-53121 Bonn (Germany); Cordes, J. M.; Brazier, A.; Chatterjee, S. [Astronomy Department, Cornell University, Ithaca, NY 14853 (United States); Lyne, A. G. [Jodrell Bank Centre for Astrophysics, University of Manchester, Manchester M13 9PL (United Kingdom); Ransom, S. M. [National Radio Astronomy Observatory, Charlottesville, VA 22903 (United States); Cognard, I. [Laboratoire de Physique et Chimie de l'Environnement et de l'Espace, LPC2E, CNRS et Universite d'Orleans, and Station de radioastronomie de Nancay, Observatoire de Paris (France); Nice, D. J. [Department of Physics, Lafayette College, Easton, PA 18042 (United States); Stairs, I. H. [Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1 (Canada); Allen, B. [Albert-Einstein-Institut, Max-Planck-Institut fuer Gravitationsphysik, D-30167 Hannover (Germany); Bhat, N. D. R. [Center for Astrophysics and Supercomputing, Swinburne University, Hawthorn, Victoria 3122 (Australia); Bogdanov, S. [Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027 (United States); Crawford, F. [Department of Physics and Astronomy, Franklin and Marshall College, P.O. Box 3003, Lancaster, PA 17604 (United States); Hessels, J. W. T. [ASTRON, Netherlands Institute for Radio Astronomy, Postbus 2, 7990 AA Dwingeloo (Netherlands); Jenet, F. A. [Center for Gravitational Wave Astronomy, University of Texas at Brownsville, Brownsville, TX 78520 (United States); Kaspi, V. M. [Department of Physics, McGill University, 3600 rue Universite, Montreal, QC H3A 2T8 (Canada); and others

2012-09-20T23:59:59.000Z

136

Magnetic burial and the harmonic content of millisecond oscillations in thermonuclear X-ray bursts  

E-Print Network (OSTI)

Matter accreting onto the magnetic poles of a neutron star spreads under gravity towards the magnetic equator, burying the polar magnetic field and compressing it into a narrow equatorial belt. Steady-state, Grad-Shafranov calculations with a self-consistent mass-flux distribution (and a semi-quantitative treatment of Ohmic diffusion) show that, for $\\Ma \\gtrsim 10^{-5}\\Msun$, the maximum field strength and latitudinal half-width of the equatorial magnetic belt are $B_{\\rm max} = 5.6\\times 10^{15} (\\Ma/10^{-4}\\Msun)^{0.32}$ G and $\\Delta\\theta = \\max[3^{\\circ} (\\Ma/10^{-4}\\Msun)^{-1.5},3^{\\circ} (\\Ma/10^{-4}\\Msun)^{0.5}(\\dot{M}_{\\rm a}/10^{-8}\\Msun {\\rm yr}^{-1})^{-0.5}]$ respectively, where $\\Ma$ is the total accreted mass and $\\dot{M}_{\\rm a}$ is the accretion rate. It is shown that the belt prevents north-south heat transport by conduction, convection, radiation, and ageostrophic shear. This may explain why millisecond oscillations observed in the tails of thermonuclear (type I) X-ray bursts in low-mass X-ray binaries are highly sinusoidal: the thermonuclear flame is sequestered in the magnetic hemisphere which ignites first. The model is also consistent with the occasional occurrence of closely spaced pairs of bursts. Time-dependent, ideal-magnetohydrodynamic simulations confirm that the equatorial belt is not disrupted by Parker and interchange instabilities.

D. J. B. Payne; A. Melatos

2006-07-11T23:59:59.000Z

137

March 2005 Number 238 CARBON CAPTURE AND  

E-Print Network (OSTI)

March 2005 Number 238 CARBON CAPTURE AND STORAGE (CCS) As part of the government's global strategy. This POSTnote discusses the potential of carbon capture and storage (CCS), a method of carbon sequestration2 stages: CO2 capture, transport and storage. CO2 capture Carbon capture is best applied to large

Mather, Tamsin A.

138

Carbon Capture and Storage  

SciTech Connect

Carbon capture and sequestration (CCS) is the long-term isolation of carbon dioxide from the atmosphere through physical, chemical, biological, or engineered processes. This includes a range of approaches including soil carbon sequestration (e.g., through no-till farming), terrestrial biomass sequestration (e.g., through planting forests), direct ocean injection of CO{sub 2} either onto the deep seafloor or into the intermediate depths, injection into deep geological formations, or even direct conversion of CO{sub 2} to carbonate minerals. Some of these approaches are considered geoengineering (see the appropriate chapter herein). All are considered in the 2005 special report by the Intergovernmental Panel on Climate Change (IPCC 2005). Of the range of options available, geological carbon sequestration (GCS) appears to be the most actionable and economic option for major greenhouse gas reduction in the next 10-30 years. The basis for this interest includes several factors: (1) The potential capacities are large based on initial estimates. Formal estimates for global storage potential vary substantially, but are likely to be between 800 and 3300 Gt of C (3000 and 10,000 Gt of CO{sub 2}), with significant capacity located reasonably near large point sources of the CO{sub 2}. (2) GCS can begin operations with demonstrated technology. Carbon dioxide has been separated from large point sources for nearly 100 years, and has been injected underground for over 30 years (below). (3) Testing of GCS at intermediate scale is feasible. In the US, Canada, and many industrial countries, large CO{sub 2} sources like power plants and refineries lie near prospective storage sites. These plants could be retrofit today and injection begun (while bearing in mind scientific uncertainties and unknowns). Indeed, some have, and three projects described here provide a great deal of information on the operational needs and field implementation of CCS. Part of this interest comes from several key documents written in the last three years that provide information on the status, economics, technology, and impact of CCS. These are cited throughout this text and identified as key references at the end of this manuscript. When coupled with improvements in energy efficiency, renewable energy supplies, and nuclear power, CCS help dramatically reduce current and future emissions (US CCTP 2005, MIT 2007). If CCS is not available as a carbon management option, it will be much more difficult and much more expensive to stabilize atmospheric CO{sub 2} emissions. Recent estimates put the cost of carbon abatement without CCS to be 30-80% higher that if CCS were to be available (Edmonds et al. 2004).

Friedmann, S

2007-10-03T23:59:59.000Z

139

Muon Capture in Heavy Nuclei  

Science Journals Connector (OSTI)

The systematics of muon capture rates in complex nuclei is discussed in the closure approximation. It is shown that for calculations in infinite nuclear matter, the nuclear ground state can be reasonably approximated by an infinite Fermi gas. The closure approximation and Fermi-gas model for the nuclear ground state are then used in an analysis of the experimental capture rates in a large number of nuclei. We find that this procedure does allow one to satisfactorily interpret quantitatively the muon-capture rates in the heavier nuclei and that it is possible to interpret the analysis in a manner which is not inconsistent with a universal Fermi interaction. The possibility of using muon capture rates to determine a neutron-proton nuclear-radius difference is also explored but with negative results.

R. Klein

1966-06-17T23:59:59.000Z

140

Carbon dioxide capture and geological storage  

Science Journals Connector (OSTI)

...Blundell and Fraser Armstrong Carbon dioxide capture and geological storage Sam...Nottingham NG12 5GG, UK Carbon dioxide capture and geological storage is a...80-90%. It involves the capture of carbon dioxide at a large industrial...

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "milliseconds electron capture" 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

Recoilless Resonant Capture of Antineutrinos  

E-Print Network (OSTI)

Resonant capture of antineutrinos can be accomplished by exploiting the monoenergetic antineutrinos emitted in bound state beta-decay. Extending this idea, I explore conditions for recoilless resonant capture in the system 3H - 3He. Observation of such transitions can set the stage for placing stringent limits on the neutrino parameter theta-13 on an ultra-short baseline of ~9 m and for observing the gravitational red shift of neutrinos

R. S. Raghavan

2005-11-15T23:59:59.000Z

142

Speeding Up Zeolite Evaluation for Carbon Capture  

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

Speeding Up Zeolite Evaluation for Carbon Capture Speeding Up Zeolite Evaluation for Carbon Capture Zeolite.png Schematic of an important class of porous materials known as...

143

Supercomputers Capture Turbulence in the Solar Wind  

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

Capture Turbulence in the Solar Wind Supercomputers Capture Turbulence in the Solar Wind Berkeley Lab visualizations could help scientists forecast destructive space weather...

144

Capture and Access of Multiple Screen Presentations.  

E-Print Network (OSTI)

??Knowledge transferred during meetings is often ephemeral in nature and thus must be captured if it is to be retained. Ideally, a capture solution should… (more)

Cutler, Kelv H.

2010-01-01T23:59:59.000Z

145

Virtual Test Environment for Motion Capture Shoots.  

E-Print Network (OSTI)

?? This master thesis presents the design of an implementation of a working prototype for an augmented motion capture acting environment. Motion capture (MoCap), the… (more)

Redavid, Claudio

2012-01-01T23:59:59.000Z

146

PSR J1723–2837: AN ECLIPSING BINARY RADIO MILLISECOND PULSAR  

SciTech Connect

We present a study of PSR J1723–2837, an eclipsing, 1.86 ms millisecond binary radio pulsar discovered in the Parkes Multibeam survey. Radio timing indicates that the pulsar has a circular orbit with a 15 hr orbital period, a low-mass companion, and a measurable orbital period derivative. The eclipse fraction of ?15% during the pulsar's orbit is twice the Roche lobe size inferred for the companion. The timing behavior is significantly affected by unmodeled systematics of astrophysical origin, and higher-order orbital period derivatives are needed in the timing solution to account for these variations. We have identified the pulsar's (non-degenerate) companion using archival ultraviolet, optical, and infrared survey data and new optical photometry. Doppler shifts from optical spectroscopy confirm the star's association with the pulsar and indicate a pulsar-to-companion mass ratio of 3.3 ± 0.5, corresponding to a companion mass range of 0.4 to 0.7 M{sub ?} and an orbital inclination angle range of between 30° and 41°, assuming a pulsar mass range of 1.4-2.0 M{sub ?}. Spectroscopy indicates a spectral type of G for the companion and an inferred Roche-lobe-filling distance that is consistent with the distance estimated from radio dispersion. The features of PSR J1723–2837 indicate that it is likely a 'redback' system. Unlike the five other Galactic redbacks discovered to date, PSR J1723–2837 has not been detected as a ?-ray source with Fermi. This may be due to an intrinsic spin-down luminosity that is much smaller than the measured value if the unmeasured contribution from proper motion is large.

Crawford, Fronefield [Department of Physics and Astronomy, Franklin and Marshall College, P.O. Box 3003, Lancaster, PA 17604 (United States); Lyne, Andrew G. [Jodrell Bank Centre for Astrophysics, University of Manchester, Manchester M13 9PL (United Kingdom); Stairs, Ingrid H. [Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1 (Canada); Kaplan, David L. [Physics Department, University of Wisconsin - Milwaukee, Milwaukee, WI 53211 (United States); McLaughlin, Maura A.; Lorimer, Duncan R. [Department of Physics, West Virginia University, Morgantown, WV 26506 (United States); Freire, Paulo C. C.; Kramer, Michael [Max-Planck-Institut für Radioastronomie, auf dem Huegel 69, D-53121 Bonn (Germany); Burgay, Marta; D'Amico, Nichi; Possenti, Andrea [INAF - Osservatorio Astronomico di Cagliari, Poggio dei Pini, I-09012 Capoterra (Italy); Camilo, Fernando [Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027 (United States); Faulkner, Andrew [Cavendish Laboratory, University of Cambridge, J. J. Thompson Avenue, Cambridge, CB3 0HE (United Kingdom); Manchester, Richard N. [CSIRO Astronomy and Space Science, Australia Telescope National Facility, P.O. Box 76, Epping, NSW 1710 (Australia); Steeghs, Danny, E-mail: fcrawfor@fandm.edu [Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom)

2013-10-10T23:59:59.000Z

147

Capturing carbon and saving coal  

SciTech Connect

Electric utilities face a tangle of choices when figuring how to pull CO{sub 2} from coal-fired plants. The article explains the three basic approaches to capturing CO{sub 2} - post-combustion, oxyfuel combustion and pre-combustion. Researchers at US DOE labs and utilities are investigating new solvents that capture CO{sub 2} more efficiently than amines and take less energy. Ammonium carbonate has been identified by EPRI as one suitable solvent. Field research projects on this are underway in the USA. Oxyfuel combustion trials are also being planned. Pre-combustion, or gasification is a completely different way of pulling energy from coal and, for electricity generation, this means IGCC systems. AEP, Southern Cinergy and Xcel are considering IGCC plants but none will capture CO{sub 2}. Rio Tinto and BP are planning a 500 MW facility to gasify coke waste from petroleum refining and collect and sequester CO{sub 2}. However, TECO recently dropped a project to build a 789 MW IGCC coal fired plant even though it was to receive a tax credit to encourage advanced coal technologies. The plant would not have captured CO{sub 2}. The company said that 'with uncertainty of carbon capture and sequestration regulations being discussed at the federal and state levels, the timing was not right'. 4 figs.

Johnson, J.

2007-10-15T23:59:59.000Z

148

Neutron Capture Measurements and Resonance Analysis of Dysprosium Y.R. Kang,1  

E-Print Network (OSTI)

Neutron Capture Measurements and Resonance Analysis of Dysprosium Y.R. Kang,1 M.W. Lee,1 T.I. Ro,2 The electron linear accelerator facility at the Rensselaer Polytechnic Institute was used to measure neutron capture yields of dysprosium with the time-of-flight method in the neutron energy region from 10 eV to 1

Danon, Yaron

149

NETL: Industrial Capture & Storage  

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

1 1 Technologies Industrial Capture & Storage Area 1 Large-Scale Industrial CCS Program The United States Department of Energy, National Energy Technology Laboratory (DOE/NETL, or DOE) is currently implementing a program titled "Carbon Capture and Sequestration from Industrial Sources and Innovative Concepts for Beneficial CO2 Use." This CO2 Capture and Sequestration (CCS) and CO2 use program is a cost-shared collaboration between the Government and industry whose purpose is to increase investment in clean industrial technologies and sequestration projects. In accordance with the American Recovery and Reinvestment Act of 2009, and Section 703 of Public Law 110-140, DOE's two specific objectives are to demonstrate: (1) Large-Scale Industrial CCS projects from industrial sources, and (2) Innovative Concepts for beneficial CO2 use.

150

Carbon Capture & Sequestration Technologies  

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

Laboratory Laboratory Battelle Memorial Institute CARBON CAPTURE & SEQUESTRATION TECHNOLOGIES J. Edmonds, J.J. Dooley, and S.H. Kim Battelle Pacific Northwest National Laboratory Battelle Memorial Institute Pacific Northwest National Laboratory Battelle Memorial Institute THE ROADMAP * Greenhouse gas emissions may not control themselves. * Climate policy may happen.--There are smart and dumb ways to proceed. The smart ways involve getting both the policy and the technology right--the GTSP. * There are no silver bullets--Expanding the set of options to include carbon capture and sequestration can help limit the cost of any ceiling on CO 2 concentrations. * Managing greenhouse emissions means managing carbon. * Carbon can be captured, transported, and sequestered in many ways.

151

DNA strand breaks measured within 100 milliseconds of irradiation of Escherichia coli by 4 MeV electrons  

Science Journals Connector (OSTI)

...Oslo, Blindern, Oslo, Norway; t Department of Biophysics, Norsk Hydros Institute for Cancer Research, Montebello, Oslo 3...data analysis. Technical assistance from the Linac crew at the Norsk Hydro's Institute for Cancer Research is gratefully acknowledged...

I Johansen; T Brustad; W D Rupp

1975-01-01T23:59:59.000Z

152

Feasibility of Air Capture Manya Ranjan  

E-Print Network (OSTI)

benefits of air capture, reported in literature, are that it allows us to reduce the atmospheric carbon process to capture CO2 and biomass coupled with carbon capture and sequestration, which utilizes coupled with carbon capture and sequestration looks more promising from a cost perspective. This work puts

153

Muon Capture in Oxygen-16  

Science Journals Connector (OSTI)

The muon capture rate in oxygen is used as a means for measuring the induced pseudoscalar coupling constant (CP) of weak interactions. The capture rate between the JP=0+ ground state of O16 and the 0-, 1-, 2-, and 3- states of N16 are calculated as a function of CP with different nuclear models. Using the experimental values of the transition rates, we then determine CP. We find that the transition rate, and therefore CP, depends strongly on the nuclear model. We conclude that 5

Vincent Gillet and David A. Jenkins

1965-10-11T23:59:59.000Z

154

Radiative Muon Capture in Calcium  

Science Journals Connector (OSTI)

The branching ratio relative to ordinary muon capture and the photon asymmetry relative to the muon-spin direction were measured for radiative muon capture in Ca40. For ~ 1200 photon events, the partial branching ratio is Rk>57 MeV=(21.1±1.4)×10-6, and the asymmetry for k>63.5 MeV is +0.90±0.50. A fit of the photon spectrum to the theory of Rood, Yano, and Yano gives the value gP?=(6.5±1.6)gA for the pseudoscalar-coupling constant. These results are in disagreement with earlier experiments.

R. D. Hart; C. R. Cox; G. W. Dodson; M. Eckhause; J. R. Kane; M. S. Pandey; A. M. Rushton; R. T. Siegel; R. E. Welsh

1977-08-15T23:59:59.000Z

155

It's Elemental - Isotopes of the Element Radon  

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

Astatine Astatine Previous Element (Astatine) The Periodic Table of Elements Next Element (Francium) Francium Isotopes of the Element Radon [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Radon has no naturally occurring isotopes. Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 193 1.15 milliseconds Alpha Decay 100.00% 194 0.78 milliseconds Alpha Decay 100.00% 195 6 milliseconds Alpha Decay 100.00% 195m 5 milliseconds Alpha Decay 100.00% 196 4.4 milliseconds Alpha Decay 99.90% Electron Capture ~ 0.10% 197 53 milliseconds Alpha Decay 100.00% 197m 25 milliseconds Alpha Decay 100.00% 198 65 milliseconds Alpha Decay No Data Available

156

CHANDRA X-RAY OBSERVATIONS OF 12 MILLISECOND PULSARS IN THE GLOBULAR CLUSTER M28  

SciTech Connect

We present a Chandra X-ray Observatory investigation of the millisecond pulsars in the globular cluster M28 (NGC 6626). In what is one of the deepest X-ray observations of a globular cluster, we firmly detect seven and possibly detect two of the 12 known M28 pulsars. With the exception of PSRs B1821-24 and J1824-2452H, the detected pulsars have relatively soft spectra, with X-ray luminosities 10{sup 30}-10{sup 31} erg s{sup -1} (0.3-8 keV), similar to most 'recycled' pulsars in 47 Tucanae and the field of the Galaxy, implying thermal emission from the pulsar magnetic polar caps. We present the most detailed X-ray spectrum to date of the energetic PSR B1821-24. It is well described by a purely non-thermal spectrum with spectral photon index {Gamma} = 1.23 and luminosity 1.4 x 10{sup 33}{Theta}(D/5.5 kpc){sup 2} erg s{sup -1} (0.3-8 keV), where {Theta} is the fraction of the sky covered by the X-ray emission beam(s). We find no evidence for the previously reported line emission feature around 3.3 keV, most likely as a consequence of improvements in instrument calibration. The X-ray spectrum and pulse profile of PSR B1821-24 suggest that the bulk of unpulsed emission from this pulsar is not of thermal origin, and is likely due to low-level non-thermal magnetospheric radiation, an unresolved pulsar wind nebula, and/or small-angle scattering of the pulsed X-rays by interstellar dust grains. The peculiar binary PSR J1824-2452H shows a relatively hard X-ray spectrum and possible variability at the binary period, indicative of an intrabinary shock formed by interaction between the relativistic pulsar wind and matter from its non-degenerate companion star.

Bogdanov, Slavko [Department of Physics, McGill University, 3600 University Street, Montreal, QC H3A 2T8 (Canada); Van den Berg, Maureen; Servillat, Mathieu; Grindlay, Jonathan E. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Heinke, Craig O. [Department of Physics, University of Alberta, 11322 89 Avenue, Edmonton, AB T6G 2G7 (Canada); Stairs, Ingrid H.; Begin, Steve [Department of Physics, University of British Columbia, 6224 Agricultural Road Vancouver, BC V6T 1Z1 (Canada); Ransom, Scott M. [National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22901 (United States); Freire, Paulo C. C. [Max-Planck-Institut fuer Radio Astronomie, Auf dem Huegel 69, D-53121 Bonn (Germany); Becker, Werner, E-mail: bogdanov@physics.mcgill.ca [Max-Planck-Institut fuer Extraterrestrische Physik, D-85740 Garching bei Muenchen (Germany)

2011-04-01T23:59:59.000Z

157

Muon Capture in Gaseous Hydrogen  

Science Journals Connector (OSTI)

An experiment to measure the muon nuclear capture rate in ultrapure gaseous hydrogen (8 atm, 293°K) has been performed using a special target in which a system of gas proportional counters, working with the pure hydrogen of the target itself, were operating. Neutrons from the capture reactions were detected using a scintillation-counter technique, and the ?-ray background was eliminated by pulse-shape discrimination. The working conditions ensured that the captures were taking place in ?p atomic systems in a singlet total-spin state. The experimental result is ?expt=651±57 sec-1, which has to be compared with the theoretical rate ?s, theor=626±26 sec-1. From the experimental capture rate, and within the framework of the currently accepted theory, we have obtained for the induced pseudoscalar coupling constant gp=(-7.3±3.7)gV. The results of the present experiment are analyzed, together with results obtained from stopping negative muons in liquid hydrogen.

A. Alberigi Quaranta; A. Bertin; G. Matone; F. Palmonari; G. Torelli; P. Dalpiaz; A. Placci; E. Zavattini

1969-01-25T23:59:59.000Z

158

Image capture system colors transforms  

Science Journals Connector (OSTI)

The goal of this paper is to simulate the colors transforms of the reflected light from an illuminated object that passes trough an image capture system. We are interested to see the colors differences at the output of each component from which the light ... Keywords: CIE standards, human eye response, lenses and filters transmittance, spectral images

Toadere Florin

2010-02-01T23:59:59.000Z

159

Financing Capture Ready Coal-Fired Power Plants in China by Issuing Capture Options  

E-Print Network (OSTI)

more economically with carbon dioxide capture and storage (CCS) technologies, however financing. Keywords: Capture Option, Capture Ready, Carbon Capture and Storage, Climate Change, Coal-fired Electricity;List of Abbreviations CAPM (Capital Asset Pricing Model) CCS (Carbon Capture and Storage) CEC (China

Aickelin, Uwe

160

SPIN EVOLUTION OF MILLISECOND MAGNETARS WITH HYPERACCRETING FALLBACK DISKS: IMPLICATIONS FOR EARLY AFTERGLOWS OF GAMMA-RAY BURSTS  

SciTech Connect

The shallow decay phase or plateau phase of early afterglows of gamma-ray bursts (GRBs), discovered by Swift, is currently understood as being due to energy injection to a relativistic blast wave. One natural scenario for energy injection invokes a millisecond magnetar as the central engine of GRBs because the conventional model of a pulsar predicts a nearly constant magnetic-dipole-radiation luminosity within the spin-down timescale. However, we note that significant brightening occurs in some early afterglows, which apparently conflicts with the above scenario. Here we propose a new model to explain this significant brightening phenomena by considering a hyperaccreting fallback disk around a newborn millisecond magnetar. We show that for typical values of the model parameters, sufficient angular momentum of the accreted matter is transferred to the magnetar and spins it up. It is this spin-up that leads to a dramatic increase of the magnetic-dipole-radiation luminosity with time and thus significant brightening of an early afterglow. Based on this model, we carry out numerical calculations and fit well early afterglows of 12 GRBs assuming sufficiently strong fallback accretion. If the accretion is very weak, our model turns out to be the conventional energy-injection scenario of a pulsar. Therefore, our model can provide a unified explanation for the shallow decay phase, plateaus, and significant brightening of early afterglows.

Dai, Z. G.; Liu Ruoyu, E-mail: dzg@nju.edu.cn, E-mail: ryliu@nju.edu.cn [School of Astronomy and Space Science, Nanjing University, Nanjing 210093 (China)

2012-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "milliseconds electron capture" 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

Financing Capture Ready Coal-Fired Power Plants in China by Issuing Capture Options  

E-Print Network (OSTI)

Capture Ready’ is a design concept enabling fossil fuel plants to be retrofitted more economically with carbon dioxide capture and storage (CCS) technologies, however financing the cost of capture ready can be problematic, especially...

Liang, Xi; Reiner, David; Gibbons, Jon; Li, Jia

162

COMBUSTION-ASSISTED CO2 CAPTURE USING MECC MEMBRANES  

SciTech Connect

Mixed Electron and Carbonate ion Conductor (MECC) membranes have been proposed as a means to separate CO{sub 2} from power plant flue gas. Here a modified MECC CO{sub 2} capture process is analyzed that supplements retentate pressurization and permeate evacuation as a means to create a CO{sub 2} driving force with a process assisted by the catalytic combustion of syngas on the permeate side of the membrane. The combustion reactions consume transported oxygen, making it unavailable for the backwards transport reaction. With this change, the MECC capture system becomes exothermic, and steam for electricity production may be generated from the waste heat. Greater than 90% of the CO{sub 2} in the flue gas may be captured, and a compressed CO{sub 2} product stream is produced. A fossil-fueled power plant using this process would consume 14% more fuel per unit electricity produced than a power plant with no CO{sub 2} capture system, and has the potential to meet U.S. DOE's goal that deployment of a CO{sub 2} capture system at a fossil-fueled power plant should not increase the cost of electricity from the combined facility by more than 30%.

Brinkman, K.; Gray, J.

2012-03-30T23:59:59.000Z

163

Combustion-Assisted CO2 Capture Using MECC Membranes  

SciTech Connect

Mixed Electron and Carbonate ion Conductor (MECC) membranes have been proposed as a means to separate CO2 from power plant flue gas. Here a modified MECC CO2 capture process is analyzed that supplements retentate pressurization and permeate evacuation as a means to create a CO2 driving force with a process assisted by the catalytic combustion of syngas on the permeate side of the membrane. The combustion reactions consume transported oxygen, making it unavailable for the backwards transport reaction. With this change, the MECC capture system becomes exothermic, and steam for electricity production may be generated from the waste heat. Greater than 90% of the CO2 in the flue gas may be captured, and a compressed CO2 product stream is produced. A fossil-fueled power plant using this process would consume 14% more fuel per unit electricity produced than a power plant with no CO2 capture system, and has the potential to meet U.S. DOE s goal that deployment of a CO2 capture system at a fossil-fueled power plant should not increase the cost of electricity from the combined facility by more than 30%.

Sherman, Steven R [ORNL; Gray, Dr. Joshua R. [Savannah River National Laboratory (SRNL), Aiken, S.C.; Brinkman, Dr. Kyle S. [Savannah River National Laboratory (SRNL), Aiken, S.C.; Huang, Dr. Kevin [University of South Carolina, Columbia

2012-01-01T23:59:59.000Z

164

MODELING PHASE-ALIGNED GAMMA-RAY AND RADIO MILLISECOND PULSAR LIGHT CURVES  

SciTech Connect

Since the discovery of the first eight gamma-ray millisecond pulsars (MSPs) by the Fermi Large Area Telescope, this population has been steadily expanding. Four of the more recent detections, PSR J0034-0534, PSR J1939+2134 (B1937+21; the first MSP ever discovered), PSR J1959+2048 (B1957+20; the first discovery of a black widow system), and PSR J2214+3000, exhibit a phenomenon not present in the original discoveries: nearly phase-aligned radio and gamma-ray light curves (LCs). To account for the phase alignment, we explore models where both the radio and gamma-ray emission originate either in the outer magnetosphere near the light cylinder or near the polar caps. Using a Markov Chain Monte Carlo technique to search for best-fit model parameters, we obtain reasonable LC fits for the first three of these MSPs in the context of 'altitude-limited' outer gap (alOG) and two-pole caustic (alTPC) geometries (for both gamma-ray and radio emission). These models differ from the standard outer gap (OG)/two-pole caustic (TPC) models in two respects: the radio emission originates in caustics at relatively high altitudes compared to the usual conal radio beams, and we allow both the minimum and maximum altitudes of the gamma-ray and radio emission regions to vary within a limited range (excluding the minimum gamma-ray altitude of the alTPC model, which is kept constant at the stellar radius, and that of the alOG model, which is set to the position-dependent null charge surface altitude). Alternatively, phase-aligned solutions also exist for emission originating near the stellar surface in a slot gap scenario ('low-altitude slot gap' (laSG) models). We find that the alTPC models provide slightly better LC fits than the alOG models, and both of these give better fits than the laSG models (for the limited range of parameters considered in the case of the laSG models). Thus, our fits imply that the phase-aligned LCs are likely of caustic origin, produced in the outer magnetosphere, and that the radio emission for these pulsars may come from close to the light cylinder. In addition, we were able to constrain the minimum and maximum emission altitudes with typical uncertainties of {approx}30% of the light cylinder radius. Our results therefore describe a third gamma-ray MSP subclass, in addition to the two previously found by Venter et al.: those with LCs fit by standard OG/TPC models and those with LCs fit by pair-starved polar cap models.

Venter, C. [Centre for Space Research, North-West University, Potchefstroom Campus, Potchefstroom 2520 (South Africa); Johnson, T. J.; Harding, A. K. [Astrophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)

2012-01-01T23:59:59.000Z

165

NETL-Developed Carbon Capture  

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

2, Issue 26 2, Issue 26 NETL-Developed Carbon Capture Technology Wins 2012 R&D 100 Award page 2 NETL Scientists Awarded Prestigious Phase Equilibria Research Prize by the American Ceramic Society page 4 Collaborative Stent Research Helps Create Hundreds of High Paying Jobs page 5 the ENERGY lab NATIONAL ENERGY TECHNOLOGY LABORATORY 2 NETL-Developed Carbon Capture Technology Wins 2012 R&D 100 Award _____________________________2 Field-proven Meter Rapidly Determines Carbon Dioxide Levels in Groundwater ____________________________3 NETL Scientists Awarded Prestigious Phase Equilibria Research Prize by the American Ceramic Society _______4 Collaborative Stent Research Helps Create Hundreds of High Paying Jobs ______________________________5 NETL Issued Patent for Novel Catalyst Technology ______6

166

HAWC Observatory captures first image  

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

April » April » HAWC Observatory captures first image HAWC Observatory captures first image The facility is designed to detect cosmic rays and the highest energy gamma rays ever observed from astrophysical sources. April 30, 2013 The High-Altitude Water Cherenkov (HAWC) Observatory is under construction. The High-Altitude Water Cherenkov (HAWC) Observatory is under construction. HAWC is under construction inside the Parque Nacional Pico de Orizaba, a Mexican national park. An international team of researchers, including scientists from Los Alamos, has taken the first image of the High-Altitude Water Cherenkov Observatory, or HAWC. The facility is designed to detect cosmic rays and the highest energy gamma rays ever observed from astrophysical sources. HAWC is under

167

Natural materials for carbon capture.  

SciTech Connect

Naturally occurring clay minerals provide a distinctive material for carbon capture and carbon dioxide sequestration. Swelling clay minerals, such as the smectite variety, possess an aluminosilicate structure that is controlled by low-charge layers that readily expand to accommodate water molecules and, potentially, carbon dioxide. Recent experimental studies have demonstrated the efficacy of intercalating carbon dioxide in the interlayer of layered clays but little is known about the molecular mechanisms of the process and the extent of carbon capture as a function of clay charge and structure. A series of molecular dynamics simulations and vibrational analyses have been completed to assess the molecular interactions associated with incorporation of CO2 in the interlayer of montmorillonite clay and to help validate the models with experimental observation.

Myshakin, Evgeniy M. (National Energy Technology Laboratory, Pittsburgh, PA); Romanov, Vyacheslav N. (National Energy Technology Laboratory, Pittsburgh, PA); Cygan, Randall Timothy

2010-11-01T23:59:59.000Z

168

How to capture active particles  

E-Print Network (OSTI)

For many applications, it is important to catch collections of autonomously navigating microbes and man-made microswimmers in a controlled way. Here we propose an efficient trap to collectively capture self-propelled colloidal rods. By means of computer simulation in two dimensions, we show that a static chevron-shaped wall represents an optimal boundary for a trapping device. Its catching efficiency can be tuned by varying the opening angle of the trap. For increasing angles, there is a sequence of three emergent states corresponding to partial, complete, and no trapping. A trapping `phase diagram' maps out the trap conditions under which the capture of self-propelled particles at a given density is rendered optimal.

A. Kaiser; H. H. Wensink; H. Löwen

2012-02-01T23:59:59.000Z

169

Radiative muon capture in hydrogen  

Science Journals Connector (OSTI)

We analyze the radiative capture of the negative muon in hydrogen using amplitudes derived within the chiral Lagrangian approach. Besides the leading and next to leading order terms, given by the well-known Rood-Tolhoek Hamiltonian, we extract from these amplitudes the corrections of the next order in 1/M (M is the nucleon mass). In addition, we estimate within the same formalism also the ?(1232) isobar excitation effects and processes described by an anomalous Lagrangian. The model we consider allows us to put the ? isobar off-shell. Our calculations show sensitivity of capture rates and photon spectra to Z, one of the off-shell parameters, related to the ?N? vertex. We have found that the model can provide the photon spectra, which are in the interval 60?MeV<~k<~kmax (k is the photon momentum) close to the experimental one.

E. Truhlík and F. C. Khanna

2002-04-01T23:59:59.000Z

170

Muon Capture in Helium-3  

Science Journals Connector (OSTI)

The partial capture rate ?-+He3?H3+? is calculated, including terms through O(1M2) and a phenomenological treatment of the exchange effects. The wave function of the three-nucleon system is largely determined by recent analyses of the electromagnetic form factors. The exchange effects are found to be very important: If they are neglected, two sets of values of FP consistent with experiment are 0±3 and 35±3. Including the exchange effects, 6?FPFA?33.

Earl A. Peterson

1968-03-20T23:59:59.000Z

171

Capture of carbon dioxide from ambient air  

Science Journals Connector (OSTI)

Carbon dioxide capture from ambient air could compensate for all carbon dioxide emissions to the atmosphere. Such capture would, for example, make it possible to use liquid, carbon-based fuels in cars or airplane...

K.S. Lackner

2009-09-01T23:59:59.000Z

172

Modeling the Costs of Carbon Capture  

Science Journals Connector (OSTI)

This paper explores the fundamental concepts required to model intertemporal carbon capture costs. A technical overview of post-combustion, pre-combustion, and alternative combustion carbon capture technologies i...

Erin Baker; Gregory Nemet; Peter Rasmussen

2012-01-01T23:59:59.000Z

173

Carbon Capture and Storage | Department of Energy  

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

Storage Carbon Capture and Storage Through Office of Fossil Energy R&D the United States has become a world leader in carbon capture and storage science and technology. Fossil...

174

Prospects for Improved Carbon Capture Technology  

E-Print Network (OSTI)

Prospects for Improved Carbon Capture Technology Report to the Congressional Research Service Kitchin July 2010 #12;(this page intentionally left blank) #12;Prospects for Improved Carbon Capture Technology i Table of Contents CHAPTER 1. EXECUTIVE SUMMARY

175

Los Alamos National Laboratory technologies capture prestigious...  

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

LANL technologies capture R&D 100 awards Los Alamos National Laboratory technologies capture prestigious R&D 100 awards Winning Laboratory projects are the 3-D Tracking Microscope...

176

Revitalizing the Knowledge Capture & Transfer Program (KCTP)...  

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

Revitalizing the Knowledge Capture & Transfer Program (KCTP) Revitalizing the Knowledge Capture & Transfer Program (KCTP) March 4, 2014 - 12:15pm Addthis HC-20 is in the process of...

177

Practical Color-Based Motion Capture  

E-Print Network (OSTI)

Motion capture systems have been widely used for high quality content creation and virtual reality but are rarely used in consumer applications due to their price and setup cost. In this paper, we propose a motion capture ...

Wang, Robert

2010-09-10T23:59:59.000Z

178

Superparamagnetic Nanoparticle Capture of Prions for Amplification  

Science Journals Connector (OSTI)

...ANTIVIRAL AGENTS Superparamagnetic Nanoparticle Capture of Prions for Amplification...findings suggest that coupling magnetic nanoparticle capture with PMCA could accelerate...not detected by immunoblot, we used nanoparticle-treated supernatants to seed PMCA...

Michael B. Miller; Surachai Supattapone

2011-01-12T23:59:59.000Z

179

Technologies for Carbon Capture and Storage  

E-Print Network (OSTI)

FutureGen Technologies for Carbon Capture and Storage and Hydrogen and Electricity Production to optimize hydrogen production or carbon capture The prototype plant would be the world's 1st #12;24-Jun-03Gen? · The world's first plant [prototype] to: - Capture and permanently sequester carbon dioxide - Emit virtually

180

Is Carbon Capture and Storage Really Needed?  

Science Journals Connector (OSTI)

Is Carbon Capture and Storage Really Needed?1 ... In addition to the costs associated with capturing CO2, equipment must also be in place to transport the captured stream. ... Due to their low price, wide availability, and stability of the resulting carbonates, Mg-rich minerals are promising materials for carbonating CO2. ...

Costas Tsouris; Douglas S. Aaron; Kent A. Williams

2010-05-12T23:59:59.000Z

Note: This page contains sample records for the topic "milliseconds electron capture" 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

Chandra X-ray and Gemini near-infrared observations of the eclipsing millisecond pulsar SWIFT J1749.4-2807 in quiescence  

E-Print Network (OSTI)

We report on Chandra X-ray and Gemini-North near-infrared K-band observations of the eclipsing accretion-powered millisecond X-ray pulsar SWIFT J1749.4?2807 in quiescence. Using the Chandra observation we derive a source ...

Chakrabarty, Deepto

182

Realistic costs of carbon capture  

SciTech Connect

There is a growing interest in carbon capture and storage (CCS) as a means of reducing carbon dioxide (CO2) emissions. However there are substantial uncertainties about the costs of CCS. Costs for pre-combustion capture with compression (i.e. excluding costs of transport and storage and any revenue from EOR associated with storage) are examined in this discussion paper for First-of-a-Kind (FOAK) plant and for more mature technologies, or Nth-of-a-Kind plant (NOAK). For FOAK plant using solid fuels the levelised cost of electricity on a 2008 basis is approximately 10 cents/kWh higher with capture than for conventional plants (with a range of 8-12 cents/kWh). Costs of abatement are found typically to be approximately US$150/tCO2 avoided (with a range of US$120-180/tCO2 avoided). For NOAK plants the additional cost of electricity with capture is approximately 2-5 cents/kWh, with costs of the range of US$35-70/tCO2 avoided. Costs of abatement with carbon capture for other fuels and technologies are also estimated for NOAK plants. The costs of abatement are calculated with reference to conventional SCPC plant for both emissions and costs of electricity. Estimates for both FOAK and NOAK are mainly based on cost data from 2008, which was at the end of a period of sustained escalation in the costs of power generation plant and other large capital projects. There are now indications of costs falling from these levels. This may reduce the costs of abatement and costs presented here may be 'peak of the market' estimates. If general cost levels return, for example, to those prevailing in 2005 to 2006 (by which time significant cost escalation had already occurred from previous levels), then costs of capture and compression for FOAK plants are expected to be US$110/tCO2 avoided (with a range of US$90-135/tCO2 avoided). For NOAK plants costs are expected to be US$25-50/tCO2. Based on these considerations a likely representative range of costs of abatement from CCS excluding transport and storage costs appears to be US$100-150/tCO2 for first-of-a-kind plants and perhaps US$30-50/tCO2 for nth-of-a-kind plants.The estimates for FOAK and NOAK costs appear to be broadly consistent in the light of estimates of the potential for cost reductions with increased experience. Cost reductions are expected from increasing scale, learning on individual components, and technological innovation including improved plant integration. Innovation and integration can both lower costs and increase net output with a given cost base. These factors are expected to reduce abatement costs by approximately 65% by 2030. The range of estimated costs for NOAK plants is within the range of plausible future carbon prices, implying that mature technology would be competitive with conventional fossil fuel plants at prevailing carbon prices.

Al Juaied, Mohammed (Harvard Univ., Cambridge, MA (US). Belfer Center for Science and International Affiaris); Whitmore, Adam (Hydrogen Energy International Ltd., Weybridge (GB))

2009-07-01T23:59:59.000Z

183

Study of Porous Adsorbents for Carbon Capture via Molecular Simulation  

E-Print Network (OSTI)

4 Ab initio carbon capture Background . . . . . .K. ; Haranczyk, M. ; Carbon Capture Materials Database;silico screening of carbon capture mate- rials” C Additional

Swisher, Joseph Andrew

2012-01-01T23:59:59.000Z

184

Perspectives on Carbon Capture and Sequestration in the United States  

E-Print Network (OSTI)

Community acceptance of carbon capture and sequestrationand realities of carbon capture and storage; www.eenews.net/Howard. What Future for Carbon Capture and Sequestration?

Wong-Parodi, Gabrielle

2011-01-01T23:59:59.000Z

185

Water Challenges for Geologic Carbon Capture and Sequestration  

E-Print Network (OSTI)

and HB 90:Carbon capture and sequestration, http://legisweb.6th annual conference on carbon capture and sequestration,7th annual conference on carbon capture & seques- tration,

Newmark, Robin L.; Friedmann, Samuel J.; Carroll, Susan A.

2010-01-01T23:59:59.000Z

186

Strategies for demonstration and early deployment of carbon capture and storage : a technical and economic assessment of capture percentage .  

E-Print Network (OSTI)

??Carbon capture and storage (CCS) is a critical technology for reducing greenhouse gas emissions from electricity production by coal-fired power plants. However, full capture (capture… (more)

Hildebrand, Ashleigh Nicole

2009-01-01T23:59:59.000Z

187

The Effect of Front Size on Electron Capture Detector Sensitivity  

Science Journals Connector (OSTI)

......Co.) was ad- justed for a pulse height of 50 volts, pulse width of 10 //sec. and an in- terval between pulses of 100 ,usec. A 3 foot, 0.4 cm i.d. glass column packed with 0.3% XE-60 on 100- 120 mesh Gas Chromo Q was used. Column temperature......

John P. Rapp; Kristen B. Eik-Nes

1966-10-01T23:59:59.000Z

188

The Electron Capture Detector-Controversies, Comments, and Chromatograms  

Science Journals Connector (OSTI)

......Picograms injected Figure 4. Calibration curves of five chiorinated hydrocarbon insecticides. Detector conditions: Pufse width 8 ,usec, pulse period 300 sec, temperature 300 , N2 flow from column 6-7 mi/min. JOURNAL OF CHROMATOGRAPHIC SCIENCE VOL. 11 MAY......

Walter A. Aue; Shubhender Kapila

1973-05-01T23:59:59.000Z

189

Workshop on neutron capture therapy  

SciTech Connect

Potentially optimal conditions for Neutron Capture Therapy (NCT) may soon be in hand due to the anticipated development of band-pass filtered beams relatively free of fast neutron contaminations, and of broadly applicable biomolecules for boron transport such as porphyrins and monoclonal antibodies. Consequently, a number of groups in the US are now devoting their efforts to exploring NCT for clinical application. The purpose of this Workshop was to bring these groups together to exchange views on significant problems of mutual interest, and to assure a unified and effective approach to the solutions. Several areas of preclinical investigation were deemed to be necessary before it would be possible to initiate clinical studies. As neither the monomer nor the dimer of sulfhydryl boron hydride is unequivocally preferable at this time, studies on both compounds should be continued until one is proven superior.

Fairchild, R.G.; Bond, V.P. (eds.)

1986-01-01T23:59:59.000Z

190

Subsurface capture of carbon dioxide  

DOE Patents (OSTI)

A process and apparatus of separating CO.sub.2 gas from industrial off-gas source in which the CO.sub.2 containing off-gas is introduced deep within an injection well. The CO.sub.2 gases are dissolved in the, liquid within the injection well while non-CO.sub.2 gases, typically being insoluble in water or brine, are returned to the surface. Once the CO.sub.2 saturated liquid is present within the injection well, the injection well may be used for long-term geologic storage of CO.sub.2 or the CO.sub.2 saturated liquid can be returned to the surface for capturing a purified CO.sub.2 gas.

Blount, Gerald; Siddal, Alvin A.; Falta, Ronald W.

2014-07-22T23:59:59.000Z

191

FE Carbon Capture and Storage News  

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

carbon-capture-storage-news Office of Fossil Energy carbon-capture-storage-news Office of Fossil Energy Forrestal Building 1000 Independence Avenue, SW Washington, DC 20585202-586-6503 en Energy Department Invests to Drive Down Costs of Carbon Capture, Support Reductions in Greenhouse Gas Pollution http://energy.gov/articles/energy-department-invests-drive-down-costs-carbon-capture-support-reductions-greenhouse-gas capture-support-reductions-greenhouse-gas" class="title-link">Energy Department Invests to Drive Down Costs of Carbon Capture, Support Reductions in Greenhouse Gas Pollution

192

The Capture of Centaurs as Trojans  

E-Print Network (OSTI)

Large scale simulations of Centaurs have yielded vast amounts of data, the analysis of which allows interesting but uncommon scenarios to be studied. One such rare phenomenon is the temporary capture of Centaurs as Trojans of the giant planets. Such captures are generally short (10 kyr to 100 kyr), but occur with sufficient frequency (about 40 objects larger than 1 km in diameter every Myr) that they may well contribute to the present-day populations. Uranus and Neptune seem to have great difficulty capturing Centaurs into the 1:1 resonance, while Jupiter captures some, and Saturn the most (80 %). We conjecture that such temporary capture from the Centaur population may be the dominant delivery route into the Saturnian Trojans. Photometric studies of the Jovian Trojans may reveal outliers with Centaur-like as opposed to asteroidal characteristics, and these would be prime candidates for captured Centaurs.

J. Horner; N. Wyn Evans

2005-11-29T23:59:59.000Z

193

Earth--Mars Transfers with Ballistic Capture  

E-Print Network (OSTI)

We construct a new type of transfer from the Earth to Mars, which ends in ballistic capture. This results in a substantial savings in capture $\\Delta v$ from that of a classical Hohmann transfer under certain conditions. This is accomplished by first becoming captured at Mars, very distant from the planet, and then from there, following a ballistic capture transfer to a desired altitude within a ballistic capture set. This is achieved by manipulating the stable sets, or sets of initial conditions whose orbits satisfy a simple definition of stability. This transfer type may be of interest for Mars missions because of lower capture $\\Delta v$, moderate flight time, and flexibility of launch period from the Earth.

Topputo, Francesco

2014-01-01T23:59:59.000Z

194

Neutron Capture Measurements and Resonance Analysis of Dysprosium  

Science Journals Connector (OSTI)

Abstract The electron linear accelerator facility at the Rensselaer Polytechnic Institute was used to measure neutron capture yields of dysprosium with the time-of-flight method in the neutron energy region from 10 eV to 1 keV. The neutron capture experiments were made at a flight path length of 25.5 m with a 16-section NaI multiplicity detector. High purity isotopic samples of 161Dy, 162Dy, 163Dy, 164Dy as well as one natural dysprosium sample with thickness of 0.508 mm were used in this measurement. Resonance parameters were extracted from the data using simultaneous fit with the multilevel R-matrix Bayesian code SAMMY 8.0. New resonances are proposed, and other resonances previously identified in the literature have been revised. The present results are compared with other evaluated values of ENDF/B-VII.1 and JENDL 4.0.

Y.R. Kang; M.W. Lee; T.I. Ro; G.N. Kim; Y. Danon; D. Williams

2014-01-01T23:59:59.000Z

195

Carbon Capture | netl.doe.gov  

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

Capture Search Publications Analytical Tools and Data Baseline Studies Quality Guidelines (QGESS) About Energy Analysis Post-combustion Pre-combustion Oxycombustion...

196

Implementation of motion capture support in smartphones.  

E-Print Network (OSTI)

??This thesis investigates the feasibility of developing cross-platform smart phone applications that utilize the Qualisys motion capture system. An Application Programming Interface that implements an… (more)

Martinsson, Johannes

2010-01-01T23:59:59.000Z

197

Electroweak Radiative Corrections to Muon Capture  

E-Print Network (OSTI)

Electroweak radiative corrections to muon capture on nuclei are computed and found to be sizable. They enhance the capture rates for hydrogen and helium by 2.8% and 3.0% respectively. As a result, the value of the induced pseudoscalar coupling, g_P^exp, extracted from a recent hydrogen 1S singlet capture experiment is increased by about 21% to g_P^exp = 7.3 +/- 1.2 and brought into good agreement with the prediction of chiral perturbation theory, g_P^theory=8.2 +/- 0.2. Implications for helium capture rate predictions are also discussed.

A. Czarnecki; W. J. Marciano; A. Sirlin

2007-04-30T23:59:59.000Z

198

Nonradiative coherent carrier captures and defect reaction at deep-level defects via phonon-kick mechanism  

SciTech Connect

We simulated the time evolution of electron-lattice coupling mode, and a series of nonradiative carrier captures by a deep-level defect in a semiconductor. For lattice relaxation energy of the order of the band gap, a series of coherent (athermal) electron and hole captures by a defect is possible for high carrier densities, which results in an inflation in the induced lattice vibration, which in turn enhances a defect reaction.

Wakita, Masaki; Suzuki, Kei; Shinozuka, Yuzo [Faculty of Systems Engineering, Wakayama University, 930 Sakaedani, Wakayama 640-8510 (Japan)

2014-02-21T23:59:59.000Z

199

Boron Neutron Capture Therapy of Intracerebral Melanoma Using Boronophenylalanine as a Capture Agent  

Science Journals Connector (OSTI)

...research-article Experimental Therapeutics Boron Neutron Capture Therapy of Intracerebral Melanoma...the Fourth International Symposium on Neutron Capture Therapy, Sydney, Australia...at the Fifth International Symposium on Neutron Therapy, Columbus, OH, September 13-17...

Khalid Z. Matalka; Michael Q. Bailey; Rolf F. Barth; Alfred E. Staubus; Albert H. Soloway; Melvin L. Moeschberger; Jeffrey A. Coderre; Einar K. Rofstad

1993-07-15T23:59:59.000Z

200

Boron Neutron Capture Therapy of Intracerebral Melanoma Using Boronophenylalanine as a Capture Agent  

Science Journals Connector (OSTI)

...Kobayashi. T., and Kanda. K. Analytical calculation of boron-10 dosage in cell nucleus for neutron capture therapy. Radial...of fourteen cases of malignant brain tumors treated by boron-10 slow neutron capture radiation. J. Neuropalhol. & Exp...

Khalid Z. Matalka; Michael Q. Bailey; Rolf F. Barth; Alfred E. Staubus; Albert H. Soloway; Melvin L. Moeschberger; Jeffrey A. Coderre; Einar K. Rofstad

1993-07-15T23:59:59.000Z

Note: This page contains sample records for the topic "milliseconds electron capture" 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

Carbon Dioxide Capture from Coal-Fired  

E-Print Network (OSTI)

Carbon Dioxide Capture from Coal-Fired Power Plants: A Real Options Analysis May 2005 MIT LFEE 2005 are valued using the "real options" valuation methodology in an uncertain carbon dioxide (CO2) price (baseline IGCC), and IGCC with pre-investments that make future retrofit for CO2 capture less expensive (pre

202

Phase Errors and the Capture Effect  

SciTech Connect

This slide-show presents analysis of spectrograms and the phase error of filtered noise in a signal. When the filtered noise is smaller than the signal amplitude, the phase error can never exceed 90{deg}, so the average phase error over many cycles is zero: this is called the capture effect because the largest signal captures the phase and frequency determination.

Blair, J., and Machorro, E.

2011-11-01T23:59:59.000Z

203

Mosaicing of Camera-captured Document Images  

E-Print Network (OSTI)

Mosaicing of Camera-captured Document Images Jian Liang a , Daniel DeMenthon b , David Doermann b 1 In this paper we present a method for composing document mosaics from camera-6 captured images. We decompose flows on the document surface. First, perspective distortion and rotation are10 removed from images

DeMenthon, Daniel

204

Microfluidic Platforms for Capturing Circulating Tumor Cells  

E-Print Network (OSTI)

Microfluidic Platforms for Capturing Circulating Tumor Cells Sweta Gupta, Allison C. Baker-cost microfluidic device that can be used to isolate and capture circulating tumor cells (CTCs) from whole blood. The device was made from polydimethylsiloxane (PDMS) consisting of a microfluidic channel with microposts

Tang, William C

205

PULSED GAMMA RAYS FROM THE ORIGINAL MILLISECOND AND BLACK WIDOW PULSARS: A CASE FOR CAUSTIC RADIO EMISSION?  

SciTech Connect

We report the detection of pulsed gamma-ray emission from the fast millisecond pulsars (MSPs) B1937+21 (also known as J1939+2134) and B1957+20 (J1959+2048) using 18 months of survey data recorded by the Fermi Large Area Telescope and timing solutions based on radio observations conducted at the Westerbork and Nancay radio telescopes. In addition, we analyzed archival Rossi X-ray Timing Explorer and XMM-Newton X-ray data for the two MSPs, confirming the X-ray emission properties of PSR B1937+21 and finding evidence ({approx}4{sigma}) for pulsed emission from PSR B1957+20 for the first time. In both cases the gamma-ray emission profile is characterized by two peaks separated by half a rotation and are in close alignment with components observed in radio and X-rays. These two pulsars join PSRs J0034-0534 and J2214+3000 to form an emerging class of gamma-ray MSPs with phase-aligned peaks in different energy bands. The modeling of the radio and gamma-ray emission profiles suggests co-located emission regions in the outer magnetosphere.

Guillemot, L.; Kramer, M.; Freire, P. C. C.; Noutsos, A. [Max-Planck-Institut fuer Radioastronomie, 53121 Bonn (Germany); Johnson, T. J.; Harding, A. K. [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Venter, C. [Centre for Space Research, North-West University, Potchefstroom Campus, 2520 Potchefstroom (South Africa); Kerr, M.; Michelson, P. F. [W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305 (United States); Pancrazi, B. [CNRS, IRAP, F-31028 Toulouse Cedex 4 (France); Livingstone, M. [Department of Physics, McGill University, Montreal, PQ H3A 2T8 (Canada); Janssen, G. H.; Jaroenjittichai, P.; Stappers, B. W.; Espinoza, C. M. [Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, M13 9PL (United Kingdom); Cognard, I. [Laboratoire de Physique et Chimie de l'Environnement, LPCE UMR 6115 CNRS, F-45071 Orleans Cedex 02 (France); Camilo, F. [Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027 (United States); Gargano, F. [Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70126 Bari (Italy); Grove, J. E. [Space Science Division, Naval Research Laboratory, Washington, DC 20375-5352 (United States); Johnston, S., E-mail: guillemo@mpifr-bonn.mpg.de, E-mail: tyrel.j.johnson@gmail.com, E-mail: Christo.Venter@nwu.ac.za, E-mail: kerrm@stanford.edu [CSIRO Astronomy and Space Science, Australia Telescope National Facility, Epping NSW 1710 (Australia); and others

2012-01-01T23:59:59.000Z

206

FIVE NEW MILLISECOND PULSARS FROM A RADIO SURVEY OF 14 UNIDENTIFIED FERMI-LAT GAMMA-RAY SOURCES  

SciTech Connect

We have discovered five millisecond pulsars (MSPs) in a survey of 14 unidentified Fermi Large Area Telescope sources in the southern sky using the Parkes radio telescope. PSRs J0101-6422, J1514-4946, and J1902-5105 reside in binaries, while PSRs J1658-5324 and J1747-4036 are isolated. Using an ephemeris derived from timing observations of PSR J0101-6422 (P = 2.57 ms, DM = 12 pc cm{sup -3}), we have detected {gamma}-ray pulsations and measured its proper motion. Its {gamma}-ray spectrum (a power law of {Gamma} = 0.9 with a cutoff at 1.6 GeV) and efficiency are typical of other MSPs, but its radio and {gamma}-ray light curves challenge simple geometric models of emission. The high success rate of this survey-enabled by selecting {gamma}-ray sources based on their detailed spectral characteristics-and other similarly successful searches indicate that a substantial fraction of the local population of MSPs may soon be known.

Kerr, M. [W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305 (United States); Camilo, F. [Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027 (United States); Johnson, T. J. [National Academy of Sciences, Washington, DC 20001 (United States); Ferrara, E. C.; Harding, A. K. [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Guillemot, L.; Kramer, M. [Max-Planck-Institut fuer Radioastronomie, Auf dem Huegel 69, 53121 Bonn (Germany); Hessels, J. [Netherlands Institute for Radio Astronomy (ASTRON), Postbus 2, 7990 AA Dwingeloo (Netherlands); Johnston, S.; Keith, M.; Reynolds, J. E. [CSIRO Astronomy and Space Science, Australia Telescope National Facility, Epping, NSW 1710 (Australia); Ransom, S. M. [National Radio Astronomy Observatory (NRAO), Charlottesville, VA 22903 (United States); Ray, P. S.; Wood, K. S. [Space Science Division, Naval Research Laboratory, Washington, DC 20375-5352 (United States); Sarkissian, J., E-mail: kerrm@stanford.edu, E-mail: fernando@astro.columbia.edu, E-mail: tyrel.j.johnson@gmail.com [CSIRO Parkes Observatory, Parkes, NSW 2870 (Australia)

2012-03-20T23:59:59.000Z

207

DISCOVERY OF ECLIPSES FROM THE ACCRETING MILLISECOND X-RAY PULSAR SWIFT J1749.4-2807  

SciTech Connect

We report the discovery of X-ray eclipses in the recently discovered accreting millisecond X-ray pulsar SWIFT J1749.4-2807. This is the first detection of X-ray eclipses in a system of this type and should enable a precise neutron star mass measurement once the companion star is identified and studied. We present a combined pulse and eclipse timing solution that enables tight constraints on the orbital parameters and inclination and shows that the companion mass is in the range 0.6-0.8 M{sub sun} for a likely range of neutron star masses, and that it is larger than a main-sequence star of the same mass. We observed two individual eclipse egresses and a single ingress. Our timing model shows that the eclipse features are symmetric about the time of 90{sup 0} longitude from the ascending node, as expected. Our eclipse timing solution gives an eclipse duration (from the mid-points of ingress to egress) of 2172 {+-} 13 s. This represents 6.85% of the 8.82 hr orbital period. This system also presents a potential measurement of 'Shapiro' delay due to general relativity; through this technique alone, we set an upper limit to the companion mass of 2.2 M{sub sun}.

Markwardt, C. B. [Department of Astronomy, University of Maryland, College Park, MD 20742 (United States); Strohmayer, T. E., E-mail: Craig.Markwardt@nasa.go [X-ray Astrophysics Laboratory, Mail Code 662, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)

2010-07-10T23:59:59.000Z

208

Carbon Capture Technology | Open Energy Information  

Open Energy Info (EERE)

Technology Technology Jump to: navigation, search This information is taken from DOE's information on Carbon Capture Carbon Capture Research Before carbon dioxide (CO2) gas can be sequestered from power plants and other point sources, it must be captured as a relatively pure gas. On a mass basis, CO2 is the 19th largest commodity chemical in the United States, and CO2 is routinely separated and captured as a by-product from industrial processes such as synthetic ammonia production, H2 production, and limestone calcination. Existing capture technologies, however, are not cost-effective when considered in the context of sequestering CO2 from power plants. Most power plants and other large point sources use air-fired combustors, a process that exhausts CO2 diluted with nitrogen. Flue gas from coal-fired power

209

Reducing the Probability of Capture into Resonance  

E-Print Network (OSTI)

A migrating planet can capture planetesimals into mean motion resonances. However, resonant trapping can be prevented when the drift or migration rate is sufficiently high. Using a simple Hamiltonian system for first and second order resonances, we explore how the capture probability depends on the order of the resonance, drift rate and initial particle eccentricity. We present scaling factors as a function of the planet mass and resonance strength to estimate the planetary migration rate above which the capture probability drops to less than 1/2. Applying our framework to multiple extra solar planetary systems that have two planets locked in resonance, we estimate lower limits for the outer planet's migration rate allowing resonance capture of the inner planet. Mean motion resonances are comprised of multiple resonant subterms. We find that the corotation subterm can reduce the probability of capture when the planet eccentricity is above a critical value. We present factors that can be used to estimate this critical planet eccentricity. Applying our framework to the migration of Neptune, we find that Neptune's eccentricity is near the critical value that would make its 2:1 resonance fail to capture twotinos. The capture probability is affected by the separation between resonant subterms and so is also a function of the precession rates of the longitudes of periapse of both planet and particle near resonance.

Alice C. Quillen

2005-11-03T23:59:59.000Z

210

UK CARBON CAPTURE AND STORAGE, WHERE IS IT ? Stuart Haszeldine  

E-Print Network (OSTI)

437 UK CARBON CAPTURE AND STORAGE, WHERE IS IT ? Stuart Haszeldine Professor of Carbon Capture.haszeldine@ed.ac.uk SUMMARY Carbon capture and storage, to capture CO2 from power plants and big industry, remains much strategy ­ either co-firing with biomass, or direct capture form the air ­ both need to bury CO2. How

Haszeldine, Stuart

211

Carbon Dioxide Capture DOI: 10.1002/anie.201000431  

E-Print Network (OSTI)

Carbon Dioxide Capture DOI: 10.1002/anie.201000431 Carbon Dioxide Capture: Prospects for New] Carbon capture and storage (CCS) schemes embody a group of technologies for the capture of CO2 from power to the atmosphere could be reduced by 80­90% for a modern conventional power plant equipped with carbon capture

212

Binary Capture Rates for Massive Protostars  

E-Print Network (OSTI)

The high multiplicity of massive stars in dense, young clusters is established early in their evolution. The mechanism behind this remains unresolved. Recent results suggest that massive protostars may capture companions through disk interactions with much higher efficiency than their solar mass counterparts. However, this conclusion is based on analytic determinations of capture rates and estimates of the robustness of the resulting binaries. We present the results of coupled n-body and SPH simulations of star-disk encounters to further test the idea that disk-captured binaries contribute to the observed multiplicity of massive stars.

Nickolas Moeckel; John Bally

2007-04-09T23:59:59.000Z

213

A SHAPIRO DELAY DETECTION IN THE BINARY SYSTEM HOSTING THE MILLISECOND PULSAR PSR J1910-5959A  

SciTech Connect

PSR J1910-5959A is a binary pulsar with a helium white dwarf (HeWD) companion located about 6 arcmin from the center of the globular cluster NGC 6752. Based on 12 years of observations at the Parkes radio telescope, the relativistic Shapiro delay has been detected in this system. We obtain a companion mass M{sub C} = 0.180 {+-} 0.018 M {sub Sun} (1{sigma}) implying that the pulsar mass lies in the range 1.1 M {sub Sun} {<=} M{sub P} {<=} 1.5 M {sub Sun }. We compare our results with previous optical determinations of the companion mass and examine prospects for using this new measurement for calibrating the mass-radius relation for HeWDs and for investigating their evolution in a pulsar binary system. Finally, we examine the set of binary systems hosting a millisecond pulsar and a low-mass HeWD for which the mass of both stars has been measured. We confirm that the correlation between the companion mass and the orbital period predicted by Tauris and Savonije reproduces the observed values but find that the predicted M{sub P} -P{sub B} correlation overestimates the neutron star mass by about 0.5 M {sub Sun} in the orbital period range covered by the observations. Moreover, a few systems do not obey the observed M{sub P} -P{sub B} correlation. We discuss these results in the framework of the mechanisms that inhibit the accretion of matter by a neutron star during its evolution in a low-mass X-ray binary.

Corongiu, A.; Burgay, M.; Possenti, A.; D'Amico, N. [INAF-Osservatorio Astronomico di Cagliari, Loc. Poggio dei Pini, Strada 54, I-09012 Capoterra (Italy); Camilo, F. [Columbia Astrophysics Laboratory, Columbia University, 550 West, 120th Street, New York, NY 10027 (United States); Lyne, A. G.; Kramer, M. [Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Manchester M13 9PL (United Kingdom); Manchester, R. N.; Johnston, S. [CSIRO Astronomy and Space Science, Australia Telescope National Facility, P.O. Box 76, Epping, NSW 1710 (Australia); Sarkissian, J. M. [Australia Telescope National Facility, CSIRO, Parkes Observatory, P.O. Box 276, Parkes, NSW 2870 (Australia); Bailes, M.; Van Straten, W. [Centre for Astrophysics and Supercomputing, Swinburne University of Technology, P.O. Box 218 Hawthorn, VIC 3122 (Australia)

2012-12-01T23:59:59.000Z

214

Carbon Capture and Utilization in Germany  

Science Journals Connector (OSTI)

Based on the EU CO2 Storage Directive of April 2009 [1...], much emphasis on governmental level has been put on carbon capture and storage (CCS) as a supplementing...2 emissions, in particular from fossil fuel fi...

A. Bazzanella

2013-01-01T23:59:59.000Z

215

Nanobiocatalysts for Carbon Capture, Sequestration and Valorisation  

Science Journals Connector (OSTI)

The approaches being pursued for carbon management includes: (i) increased efficiency of ... energy conversion, (ii) usage of low-carbon or carbon-free energy sources, and (iii) capturing and sequestering anthrop...

Sadhana Rayalu; Renu Yadav; Snehal Wanjari; Chandan Prabhu…

2012-11-01T23:59:59.000Z

216

Biomass Combustion: Carbon Capture and Storage  

Science Journals Connector (OSTI)

This chapter deals with the capture and storage of carbon dioxide produced by the combustion of biomass. Since biomass combustion is potentially carbon neutral, this technique could provide a method of reducing t...

Jenny M. Jones; Amanda R. Lea-Langton…

2014-01-01T23:59:59.000Z

217

Optimal Carbon Capture and Storage Policies  

Science Journals Connector (OSTI)

The IPCC recommends the use of carbon capture and sequestration (CCS) technologies in order ... may be a long-term solution to curb carbon emissions. We also show that over time ... planner will choose to decreas...

Alain Ayong Le Kama; Mouez Fodha; Gilles Lafforgue

2013-08-01T23:59:59.000Z

218

An update of muon capture on hydrogen  

E-Print Network (OSTI)

The successful precision measurement of the rate of muon capture on a proton by the MuCap Collaboration allows for a stringent test of the current theoretical understanding of this process. Chiral perturbation theory, which is a low-energy effective field theory that preserves the symmetries and the pattern of symmetry breaking in the underlying theory of QCD, offers a systematic framework for describing $\\mu p$ capture and provides a basic test of QCD at the hadronic level. We describe how this effective theory with no free parameters reproduces the measured capture rate. A recent study has addressed new sources of uncertainties that were not considered in the previous works, and we review to what extent these uncertainties are now under control. Finally, the rationale for studying muon capture on the deuteron and some recent theoretical developments regarding this process are discussed.

S. Pastore; F. Myhrer; K. Kubodera

2014-05-06T23:59:59.000Z

219

Resonance Neutron Capture in Nb93  

Science Journals Connector (OSTI)

Spectra from radiative capture in S- and P-wave resonances in Nb93 have been compared. Differences in these spectra are interpreted to indicate the presence of sizable two-particle—one-hole components in the capturing states. S-wave intensities show no correlation with (d,p) intensities to the same final states, but P-wave intensities exhibit a significant correlation. Lack of a correlation with the initial-state reduced widths rules out an appreciable channel-capture effect in this experiment. The differences in S- and P-wave total radiation widths are discussed. Seven neutron-resonance spin assignments are made, based on the capture ?-ray spectra, and 11 new final states in Nb94 are observed and tabulated.

R. E. Chrien; K. Rimawi; J. B. Garg

1971-05-01T23:59:59.000Z

220

Electrochemically mediated separation for carbon capture  

E-Print Network (OSTI)

Carbon capture technology has been proposed as an effective approach for the mitigation of anthropogenic CO[subscript 2] emissions. Thermal-swing separation technologies based on wet chemical scrubbing show potential for ...

Simeon, Fritz

Note: This page contains sample records for the topic "milliseconds electron capture" 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

Computer simulation of neutron capture therapy.  

E-Print Network (OSTI)

Analytical methods are developed to simulate on a large digital computer the production and use of reactor neutron beams f or boron capture therapy of brain tumors. The simulation accounts for radiation dose distributions ...

Olson, Arne Peter

1967-01-01T23:59:59.000Z

222

Computer simulation of neutron capture therapy  

E-Print Network (OSTI)

Analytical methods are developed to simulate on a large digital computer the production and use of reactor neutron beams f or boron capture therapy of brain tumors. The simulation accounts for radiation dose distributions ...

Olson, Arne Peter

1967-01-01T23:59:59.000Z

223

Capturing Chemistry in XML/CML  

E-Print Network (OSTI)

Chemical Markup Language (CML) is an XML-conformant Schema that describes molecules, spectra, reactions, and computational chemistry. It is capable of capturing the chemistry in a variety of current publications and is becoming adopted by many...

Townsend, Joseph A; Adams, Sam; Goodman, Jonathan M; Murray-Rust, Peter; Waudby, Chris A

224

NETL: Evaluation of Dry Sorbent Technology for Pre-Combustion CO2 Capture  

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

Evaluation of Dry Sorbent Technology for Pre-Combustion CO2 Capture Evaluation of Dry Sorbent Technology for Pre-Combustion CO2 Capture Project No.: DE-FE0000465 Scanning Electron Microsopy (SEM) and Transmission Electron Miscroscopy (TEM) images of a multi-functional sorbent synthesized by a novel method. Scanning Electron Microsopy (SEM) and Transmission Electron Miscroscopy (TEM) images of a multi-functional sorbent synthesized by a novel method. URS and the University of Illinois at Urbana-Champaign are investigating a dry sorbent process configured to combine the water-gas-shift (WGS) reaction with carbon dioxide (CO2) removal for coal gasification systems. A combination of process simulation modeling and sorbent molecular and thermodynamic analyses will be performed to predict optimal sorbent properties and identify optimal operating temperature and pressure ranges

225

The focusing properties of the positron-capture solenoidal lens  

SciTech Connect

This note concerns the focusing properties of the positron-capture solenoid. Such a solenoid will be placed before the entrance of the 450 MeV positron linear-accelerator injector in the APS. The 1.25 A, 40 ns electron beam is accelerated in the 200 MeV electron linac. This beam is then focused onto a 3 mm diameter spot at the 7 mm thick tungsten target. By the process of multiple nuclear-scattering the target generates the positron particles. These positrons, in general, can have a large diverging angle. In order to capture these rapidly diverging positrons, a relatively strong focusing lens is placed close to the converter. In this case a magnetic solenoidal lens has an advantage over the usual quadrupole lens because of its larger phase-space acceptance. In particular, the solenoidal lens is noted for its capability of controlling the spin direction of polarized ions. The authors first wrote down the expression for the magnetic field distribution on the axis for the solenoidal lens. From this expression they derive the expressions for the first- and second-order field distributions at any point in the region. They then calculate and compare the focal powers at various distances off the axis. Further, they calculate and include the third- and fourth-order components of the fields and compare them with the previous results. Finally, they briefly consider the particle trajectories through these fields and present the result in terms of the particle motion in phase space.

Yoon, M.; Mavrogenes, G.

1988-06-01T23:59:59.000Z

226

NETL: 2013 Conference Proceedings - 2013 NETL CO2 Capture Technology  

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

2013 NETL CO2 Capture Technology Meeting 2013 NETL CO2 Capture Technology Meeting July 8-11, 2013 Previous Proceedings 2012: NETL CO2 Capture Technology Meeting 2011: NETL CO2 Capture Technology Meeting 2010: NETL CO2 Capture Technology Meeting 2009: Annual NETL CO2 Capture Technology for Existing Plants R&D Meeting Proceedings of the 2013 NETL CO2 Capture Technology Meeting Table of Contents Presentations Monday, July 8 Opening/Overview Post-Combustion Sorbent-Based Capture Tuesday, July 9 Post-Combustion Solvent-Based Capture CO2 Compression Wednesday, July 10 Post-Combustion Membrane-Based Capture Pre-Combustion Capture Projects Thursday, July 11 ARPA-E Capture Projects System Studies and Modeling Oxy-Combustion and Chemical Looping Posters PRESENTATIONS Monday, July 8, 2013 Opening/Overview Introduction [PDF-MB]

227

Carbon Capture and Storage (CCS) Studies | Department of Energy  

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

Carbon Capture and Storage (CCS) Studies Carbon Capture and Storage (CCS) Studies Fossil Energy Studies for the next 6 months,December 2008-June 2009, Carbon Capture and Storage...

228

Deployment Models for Commercialized Carbon Capture and Storage  

Science Journals Connector (OSTI)

Deployment Models for Commercialized Carbon Capture and Storage† ... Several proposed integrated gasification-combined cycle and postcombustion coal CO2 capture projects are teaming with oil companies for use of the captured CO2 in EOR. ...

Richard A. Esposito; Larry S. Monroe; Julio S. Friedman

2010-08-19T23:59:59.000Z

229

The atmospheric signature of carbon capture and storage  

Science Journals Connector (OSTI)

...Liss The atmospheric signature of carbon capture and storage Ralph F. Keeling...with other industrial processes, carbon capture and storage (CCS) will have...CCS to the order of-Pgyr1. carbon capture and storage|geosequestration...

2011-01-01T23:59:59.000Z

230

Novel Solvent System for CO2 Capture  

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

Solvent System for CO Solvent System for CO 2 Capture Background The mission of the U.S. Department of Energy/National Energy Technology Laboratory (DOE/NETL) Existing Plants, Emissions & Capture (EPEC) Research & Development (R&D) Program is to develop innovative environmental control technologies to enable full use of the nation's vast coal reserves, while at the same time allowing the current fleet of coal-fired power plants to comply with existing and emerging environmental

231

CAPTURE OF TROJANS BY JUMPING JUPITER  

SciTech Connect

Jupiter Trojans are thought to be survivors of a much larger population of planetesimals that existed in the planetary region when planets formed. They can provide important constraints on the mass and properties of the planetesimal disk, and its dispersal during planet migration. Here, we tested a possibility that the Trojans were captured during the early dynamical instability among the outer planets (aka the Nice model), when the semimajor axis of Jupiter was changing as a result of scattering encounters with an ice giant. The capture occurs in this model when Jupiter's orbit and its Lagrange points become radially displaced in a scattering event and fall into a region populated by planetesimals (that previously evolved from their natal transplanetary disk to {approx}5 AU during the instability). Our numerical simulations of the new capture model, hereafter jump capture, satisfactorily reproduce the orbital distribution of the Trojans and their total mass. The jump capture is potentially capable of explaining the observed asymmetry in the number of leading and trailing Trojans. We find that the capture probability is (6-8) Multiplication-Sign 10{sup -7} for each particle in the original transplanetary disk, implying that the disk contained (3-4) Multiplication-Sign 10{sup 7} planetesimals with absolute magnitude H < 9 (corresponding to diameter D = 80 km for a 7% albedo). The disk mass inferred from this work, M{sub disk} {approx} 14-28 M{sub Earth}, is consistent with the mass deduced from recent dynamical simulations of the planetary instability.

Nesvorny, David [Department of Space Studies, Southwest Research Institute, 1050 Walnut St., Suite 300, Boulder, CO 80302 (United States); Vokrouhlicky, David [Institute of Astronomy, Charles University, V Holesovickach 2, 180 00 Prague 8 (Czech Republic); Morbidelli, Alessandro [Departement Cassiopee, University of Nice, CNRS, Observatoire de la Cote d'Azur, Nice, F-06304 (France)

2013-05-01T23:59:59.000Z

232

Grangemouth Advanced CO2 Capture Project GRACE | Open Energy...  

Open Energy Info (EERE)

GRACE is a project consortium that aims to develop cost improving technologies for carbon capture and separation. References: Grangemouth Advanced CO2 Capture Project...

233

New Computer Model Pinpoints Prime Materials for Carbon Capture  

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

Model Pinpoints Prime Materials for Carbon Capture New Computer Model Pinpoints Prime Materials for Carbon Capture July 17, 2012 | Tags: Dirac, Energy Technologies, Materials...

234

World's Largest Post-Combustion Carbon Capture Project Begins...  

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

World's Largest Post-Combustion Carbon Capture Project Begins Construction World's Largest Post-Combustion Carbon Capture Project Begins Construction July 15, 2014 - 9:55am Addthis...

235

solvent-carbon-capture-scientific | netl.doe.gov  

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

Pressurized Stripping Process-Based Technology for CO2 Capture Project No.: DE-FE0007567 Carbon Capture Scientific is developing and testing a novel, proprietary, Gas Pressurized...

236

First-of-its-Kind Carbon Capture and Conversion Demonstration...  

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

First-of-its-Kind Carbon Capture and Conversion Demonstration Technology Opening in Texas First-of-its-Kind Carbon Capture and Conversion Demonstration Technology Opening in Texas...

237

carbon capture rd index | netl.doe.gov  

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

Awards Partnering With Us About Us Contacts Fact Sheet Research Team Members Key Contacts Carbon Capture Research & Development Carbon capture and storage from fossil-based power...

238

2011 Department of Energy Investments in Carbon Capture Technologies...  

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

Department of Energy Investments in Carbon Capture Technologies 2011 Department of Energy Investments in Carbon Capture Technologies 2011 Department of Energy Investments in Carbon...

239

CO2 Capture and Storage Project, Education and Training Center...  

Energy Savers (EERE)

Industrial Carbon Capture and Storage (ICCS) Project is one of the nation's largest carbon capture and storage endeavors. Part of the project includes the National...

240

Knowledge Capture and Transfer Program | Department of Energy  

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

Knowledge Capture and Transfer Program Knowledge Capture and Transfer Program The Office of Learning and Workforce Development is working with Heads of Departmental Elements, DOE...

Note: This page contains sample records for the topic "milliseconds electron capture" 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

Knowledge Capture and Transfer Program (KCTP) "Newly Created...  

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

Knowledge Capture and Transfer Program (KCTP) "Newly Created" Powerpedia Page Knowledge Capture and Transfer Program (KCTP) "Newly Created" Powerpedia Page June 3, 2014 - 1:36pm...

242

carbon capture rd index | netl.doe.gov  

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

Carbon Capture Publications Patents Awards Partnering With Us About Us Contacts Staff Search Fact Sheet Research Team Members Key Contacts Carbon Capture Research & Development...

243

Scientists capture 'redox moments' in living cells | EMSL  

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

Scientists capture 'redox moments' in living cells Scientists capture 'redox moments' in living cells Better understanding of hardy bacteria enhances tool for biofuel creation...

244

Los Alamos devices capture 'Oscars of Invention' awards  

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

Los Alamos devices capture 'Oscars of Invention' awards Los Alamos devices capture 'Oscars of Invention' awards Safire oil-well measurement and AWS laser-based spectrometer for...

245

Carbon Capture, Transport and Storage Regulatory Test Exercise...  

Open Energy Info (EERE)

Capture, Transport and Storage Regulatory Test Exercise: Output Report Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Carbon Capture, Transport and Storage Regulatory...

246

NETL emphasizes CO{sub 2} capture from existing plants  

SciTech Connect

This paper gives brief description of several carbon dioxide capture projects that were directed toward a broader range of capture technologies.

NONE

2008-04-01T23:59:59.000Z

247

Report to the President on Capturing Domestic Competitive Advantage...  

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

Capturing Domestic Competitive Advantage in Advanced Manufacturing Report to the President on Capturing Domestic Competitive Advantage in Advanced Manufacturing pcastjuly2012.pdf...

248

Capturing inhomogeneous broadening of the -CN stretch vibration...  

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

Capturing inhomogeneous broadening of the -CN stretch vibration in a Langmuir monolayer with high-resolution spectra and Capturing inhomogeneous broadening of the -CN stretch...

249

Strategies for demonstration and early deployment of carbon capture and storage : a technical and economic assessment of capture percentage  

E-Print Network (OSTI)

Carbon capture and storage (CCS) is a critical technology for reducing greenhouse gas emissions from electricity production by coal-fired power plants. However, full capture (capture of nominally 90% of emissions) has ...

Hildebrand, Ashleigh Nicole

2009-01-01T23:59:59.000Z

250

Viability of Using Markerless Motion Capture; Lönsamheten av att använda Markerless Motion Capture.  

E-Print Network (OSTI)

?? This thesis presents a study on how to create a production pipeline using a markerless motion capture system for the creation of animations in… (more)

Mattsson, Viktor

2014-01-01T23:59:59.000Z

251

NETL: 2011 Conference Proceedings - 2011 NETL CO2 Capture Technology  

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

2011 NETL CO2 Capture Technology Meeting 2011 NETL CO2 Capture Technology Meeting August 22 - 26, 2011 Previous Proceedings 2009: Annual NETL CO2 Capture Technology for Existing Plants R&D Meeting 2010: 2010 NETL CO2 Capture Technology Meeting Proceedings of the 2011 NETL CO2 Capture Technology Meeting Table of Contents Presentations Monday, August 22 Opening/Overview Post-combustion Sorbent-Based Capture Post-combustion Membrane-Based Capture Tuesday, August 23 Post-combustion Solvent-Based Capture ARPA-E Capture Projects Wednesday, August 24 Oxy-Combustion and Oxygen Production Chemical Looping Process CO2 Compression Thursday, August 25 FutureGen 2.0, CCPI and ICCS Demonstration Projects System Studies and Modeling Pre-Combustion Capture Projects Friday, August 26 Pre-combustion Capture Projects Posters

252

NETL: Industrial Capture & Storage Area 2  

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

2 2 Technologies Industrial Capture & Storage Area 2 Innovative Concepts for Beneficial CO2 Use The United States Department of Energy, National Energy Technology Laboratory (DOE/NETL, or DOE) is currently implementing a program titled "Carbon Capture and Sequestration from Industrial Sources and Innovative Concepts for Beneficial CO2 Use." This CO2 Capture and Sequestration (CCS) and CO2 use program is a cost-shared collaboration between the Government and industry whose purpose is to increase investment in clean industrial technologies and sequestration projects. In accordance with the American Recovery and Reinvestment Act of 2009, and Section 703 of Public Law 110-140, DOE's two specific objectives are to demonstrate: (1) Large-Scale Industrial CCS projects from industrial sources, and (2) Innovative Concepts for beneficial CO2 use.

253

Speeding Up Zeolite Evaluation for Carbon Capture  

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

Speeding Up Speeding Up Zeolite Evaluation for Carbon Capture Speeding Up Zeolite Evaluation for Carbon Capture Zeolite.png Schematic of an important class of porous materials known as zeolites. The large red structure in the center of this periodic structure is a cavity that might be a good candidate for adsorption of a gas such as carbon dioxide. The seven small red areas at the corners (plus the one hidden by the yellow ball) are not suitable and need to be eliminated from studies that attempt to predict guest-related properties using molecular simulation techniques. A new method developed at NERSC uses software to differentiate between suitable and unsuitable pockets, thereby speeding up discovery of new materials. Why it Matters: Capturing and sequestering waste carbon dioxide (CO2) is a

254

Carbon Capture Corporation | Open Energy Information  

Open Energy Info (EERE)

Carbon Capture Corporation Carbon Capture Corporation Jump to: navigation, search Name Carbon Capture Corporation Address 7825 Fay Avenue Place La Jolla, California Zip 92037 Sector Carbon Product Developing ways to use algae to absorb CO2 emitted from gas- and coal-fired power plants Website http://www.carbcc.com/ Coordinates 32.845391°, -117.275033° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.845391,"lon":-117.275033,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

255

Planetesimal Capture in the Disk Instability Model  

E-Print Network (OSTI)

We follow the contraction and evolution of a typical Jupiter-mass clump created by the disk instability mechanism, and compute the rate of planetesimal capture during this evolution. We show that such a clump has a slow contraction phase lasting ~3x10^5 years. By following the trajectories of planetesimals as they pass through the envelope of the protoplanet, we compute the cross-section for planetesimal capture at all stages of the protoplanet's evolution. We show that the protoplanet can capture a large fraction of the solid material in its feeding zone, which will lead to an enrichment of the protoplanet in heavy elements. The exact amount of this enrichment depends upon, but is not very sensitive to the size and random speed of the planetesimals.

Ravit Helled; Morris Podolak; Attay Kovetz

2006-06-29T23:59:59.000Z

256

Muon capture rates within the projected QRPA  

E-Print Network (OSTI)

The conservation of the number of particles within the QRPA plays an important role in the evaluation muon capture rates in all light nuclei with A \\precsim 30 . The violation of the CVC by the Coulomb field in this mass region is of minor importance, but this effect could be quite relevant for medium and heavy nuclei studied previously. The extreme sensitivity of the muon capture rates on the 'pp' coupling strength in nuclei with large neutron excess when described within the QRPA is pointed out. We reckon that the comparison between theory and data for the inclusive muon capture is not a fully satisfactory test on the nuclear model that is used. The exclusive muon transitions are much more robust for such a purpose.

Danilo Sande Santos; Arturo R. Samana; Francisco Krmpoti?; Alejandro J. Dimarco

2012-03-03T23:59:59.000Z

257

Thermal Neutron Capture y's (CapGam)  

DOE Data Explorer (OSTI)

The National Nuclear Data Center (NNDC) presents two tables showing energy and photon intensity with uncertainties of gamma rays as seen in thermal-neutron capture.  One table is organized in ascending order of gamma energy, and the second is organized by Z, A of the target. In the energy-ordered table the three strongest transitions are indicated in each case. The nuclide given is the target nucleus in the capture reaction. The gamma energies given are in keV. The gamma intensities given are relative to 100 for the strongest transition. %I? (per 100 n-captures) for the strongest transition is given, where known. All data are taken from the Evaluated Nuclear Structure Data File (ENSDF), a computer file of evaluated nuclear structure data and from the eXperimental Unevaluated Nuclear Data List (XUNDL). (Specialized Interface)

258

Flawed analysis of the possibility of air capture  

E-Print Network (OSTI)

(2009) Capture of carbon dioxide from ambient air. Eur Phys J Spec Top 176: 93­106. Author contributionsLETTER Flawed analysis of the possibility of air capture In the article entitled "Economic capture and other gas separation processes. It concludes that (i) "unless air capture significantly

259

Carbon Dioxide Capture DOI: 10.1002/anie.200902836  

E-Print Network (OSTI)

Carbon Dioxide Capture DOI: 10.1002/anie.200902836 Highly Selective CO2 Capture in Flexible 3D Coordination Polymer Networks** Hye-Sun Choi and Myunghyun Paik Suh* Carbon dioxide capture has been warming, and the development of efficient methods for capturing CO2 from industrial flue gas has become

Paik Suh, Myunghyun

260

Incorporating Carbon Capture and Storage Technologies in Integrated Assessment Models  

E-Print Network (OSTI)

Incorporating Carbon Capture and Storage Technologies in Integrated Assessment Models J. R. Mc climate policy analysis. This paper examines the representation of carbon capture and storage (CCS carbon capture and storage, 2) a natural gas combined cycle technology with carbon capture and storage 1

Note: This page contains sample records for the topic "milliseconds electron capture" 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

Sulfur capture in combination bark boilers  

SciTech Connect

A review of sulfur dioxide emission data for eight combination bark boilers in conjunction with the sulfur contents of the fuels reveals significant sulfur capture ranging from 10% to over 80% within the solid ash phase. Wood ash characteristics similar to activated carbon as well as the significant wood ash alkali oxide and carbonate fractions are believed responsible for the sulfur capture. Sulfur emissions from combination bark-fossil fuel firing are correlated to the sulfur input per ton of bark or wood residue fired.

Someshwar, A.V.; Jain, A.K. (National Council of the Paper Industry for Air and Stream Improvement, Gainesville, FL (United States))

1993-07-01T23:59:59.000Z

262

Carbon Dioxide Capture and Gas Separation on B80 Fullerene  

Science Journals Connector (OSTI)

Carbon Dioxide Capture and Gas Separation on B80 Fullerene ... All other clusters show the optimized chemisorbed configurations of CO2 captured on B80. ... Although air capture will cost more than capture at power generating facilities when both are operated under the same economic conditions, air capture allows one to apply industrial economies of scale to small and mobile emission sources and enables a partial decoupling of C capture from the energy infrastructure; advantages which may compensate for the intrinsic difficulty of capturing C from air. ...

Qiao Sun; Meng Wang; Zhen Li; Aijun Du; Debra J. Searles

2014-01-09T23:59:59.000Z

263

BRIGHT 'MERGER-NOVA' FROM THE REMNANT OF A NEUTRON STAR BINARY MERGER: A SIGNATURE OF A NEWLY BORN, MASSIVE, MILLISECOND MAGNETAR  

SciTech Connect

A massive millisecond magnetar may survive the merger of a neutron star (NS) binary, which would continuously power the merger ejecta. We develop a generic dynamic model for the merger ejecta with energy injection from the central magnetar. The ejecta emission (the {sup m}erger-nova{sup )} powered by the magnetar peaks in the UV band and the peak of the light curve, progressively shifts to an earlier epoch with increasing frequency. A magnetar-powered merger-nova could have an optical peak brightness comparable to a supernova, which is a few tens or hundreds times brighter than the radioactive-powered merger-novae (the so-called macro-nova or kilo-nova). On the other hand, such a merger-nova would peak earlier and have a significantly shorter duration than that of a supernova. An early collapse of the magnetar could suppress the brightness of the optical emission and shorten its duration. Such millisecond-magnetar-powered merger-novae may be detected from NS-NS merger events without an observed short gamma-ray burst, and could be a bright electromagnetic counterpart for gravitational wave bursts due to NS-NS mergers. If detected, it suggests that the merger leaves behind a massive NS, which has important implications for the equation-of-state of nuclear matter.

Yu, Yun-Wei [Institute of Astrophysics, Central China Normal University, Wuhan 430079 (China)] [Institute of Astrophysics, Central China Normal University, Wuhan 430079 (China); Zhang, Bing; Gao, He, E-mail: yuyw@mail.ccnu.edu.cn, E-mail: zhang@physics.unlv.edu [Department of Physics and Astronomy, University of Nevada, Las Vegas, NV 89154 (United States)] [Department of Physics and Astronomy, University of Nevada, Las Vegas, NV 89154 (United States)

2013-10-20T23:59:59.000Z

264

NETL: 2010 Conference Proceedings - 2010 NETL CO2 Capture Technology  

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

2010 NETL CO2 Capture Technology Meeting 2010 NETL CO2 Capture Technology Meeting September 13-17, 2010 Table of Contents Presentations Monday, September 13 Opening/Overview Post-combustion Sorbent Based Capture Post-combustion Solvent Based Capture Tuesday, September 14 Post-combustion Membrane Based Capture Pulverized Coal Oxy-combustion ARPA-E Projects Wednesday, September 15 National Carbon Capture Center Chemical Looping Processes Systems Studies and Modeling Efforts CO2 Compression New CO2 Capture Projects Thursday, September 16 New CO2 Capture Projects - Cont'd CCPI and ICCS Demonstration Projects Pre-combustion Capture Projects Friday, September 17 Pre-combustion Capture Projects - Cont'd Posters Advanced Research Projects Agency - Energy (ARPA-E) NETL Office of Research and Development Research Projects

265

Biominetic Membrane for Co2 Capture from Flue Gas  

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

Biomimetic Membrane for CO Biomimetic Membrane for CO 2 Capture from Flue Gas Background Carbon Capture and Sequestration (CCS) is a three-step process including capture, pipeline transport, and geologic storage of which the capture of carbon dioxide (CO 2 ) is the most costly and technically challenging. Current available methods impose significant energy burdens that severely impact their overall effectiveness as a significant deployment option. Of the available capture technologies for post

266

Dynamic imaging with electron microscopy  

ScienceCinema (OSTI)

Livermore researchers have perfected an electron microscope to study fast-evolving material processes and chemical reactions. By applying engineering, microscopy, and laser expertise to the decades-old technology of electron microscopy, the dynamic transmission electron microscope (DTEM) team has developed a technique that can capture images of phenomena that are both very small and very fast. DTEM uses a precisely timed laser pulse to achieve a short but intense electron beam for imaging. When synchronized with a dynamic event in the microscope's field of view, DTEM allows scientists to record and measure material changes in action. A new movie-mode capability, which earned a 2013 R&D 100 Award from R&D Magazine, uses up to nine laser pulses to sequentially capture fast, irreversible, even one-of-a-kind material changes at the nanometer scale. DTEM projects are advancing basic and applied materials research, including such areas as nanostructure growth, phase transformations, and chemical reactions.

Campbell, Geoffrey; McKeown, Joe; Santala, Melissa

2014-05-30T23:59:59.000Z

267

Dynamic imaging with electron microscopy  

SciTech Connect

Livermore researchers have perfected an electron microscope to study fast-evolving material processes and chemical reactions. By applying engineering, microscopy, and laser expertise to the decades-old technology of electron microscopy, the dynamic transmission electron microscope (DTEM) team has developed a technique that can capture images of phenomena that are both very small and very fast. DTEM uses a precisely timed laser pulse to achieve a short but intense electron beam for imaging. When synchronized with a dynamic event in the microscope's field of view, DTEM allows scientists to record and measure material changes in action. A new movie-mode capability, which earned a 2013 R&D 100 Award from R&D Magazine, uses up to nine laser pulses to sequentially capture fast, irreversible, even one-of-a-kind material changes at the nanometer scale. DTEM projects are advancing basic and applied materials research, including such areas as nanostructure growth, phase transformations, and chemical reactions.

Campbell, Geoffrey; McKeown, Joe; Santala, Melissa

2014-02-20T23:59:59.000Z

268

Nuclear-resonant electron scattering  

Science Journals Connector (OSTI)

We investigate nuclear-resonant electron scattering as occurring in the two-step process of nuclear excitation by electron capture (NEEC) followed by internal conversion. The nuclear excitation and decay are treated by a phenomenological collective model in which nuclear states and transition probabilities are described by experimental parameters. We present capture rates and resonant strengths for a number of heavy-ion collision systems considering various scenarios for the resonant electron-scattering process. The results show that for certain cases resonant electron scattering can have significantly larger resonance strengths than NEEC followed by the radiative decay of the nucleus. We discuss the impact of our findings on the possible experimental observation of NEEC.

Adriana Pálffy and Zoltán Harman

2008-04-04T23:59:59.000Z

269

Capture and Utilisation of Landfill Gas  

E-Print Network (OSTI)

about 955 landfills that recovered biogas. The largest number of such landfills were in the USA landfills in Denmark that in total captured 5,800Nm3 of biogas per hour, equivalent to 276.4MW of contained #12;Biomass US DATA ON GENERATION OF BIOGAS AT LANDFILLS Eileen Berenyi, a Research Associate of EEC

Columbia University

270

Synthesis of optimal adsorptive carbon capture processes.  

SciTech Connect

Solid sorbent carbon capture systems have the potential to require significantly lower regeneration energy compared to aqueous monoethanol amine (MEA) systems. To date, the majority of work on solid sorbents has focused on developing the sorbent materials themselves. In order to advance these technologies, it is necessary to design systems that can exploit the full potential and unique characteristics of these materials. The Department of Energy (DOE) recently initiated the Carbon Capture Simulation Initiative (CCSI) to develop computational tools to accelerate the commercialization of carbon capture technology. Solid sorbents is the first Industry Challenge Problem considered under this initiative. An early goal of the initiative is to demonstrate a superstructure-based framework to synthesize an optimal solid sorbent carbon capture process. For a given solid sorbent, there are a number of potential reactors and reactor configurations consisting of various fluidized bed reactors, moving bed reactors, and fixed bed reactors. Detailed process models for these reactors have been modeled using Aspen Custom Modeler; however, such models are computationally intractable for large optimization-based process synthesis. Thus, in order to facilitate the use of these models for process synthesis, we have developed an approach for generating simple algebraic surrogate models that can be used in an optimization formulation. This presentation will describe the superstructure formulation which uses these surrogate models to choose among various process alternatives and will describe the resulting optimal process configuration.

chang, Y.; Cozad, A.; Kim, H.; Lee, A.; Vouzis, P.; Konda, M.; Simon, A.; Sahinidis, N.; Miller, D.

2011-01-01T23:59:59.000Z

271

Annual Report: Carbon Capture (30 September 2012)  

SciTech Connect

Capture of carbon dioxide (CO{sub 2}) is a critical component in reducing greenhouse gas emissions from fossil fuel-based processes. The Carbon Capture research to be performed is aimed at accelerating the development of efficient, cost-effective technologies which meet the post-combustion programmatic goal of capture of 90% of the CO{sub 2} produced from an existing coal-fired power plant with less than a 35% increase in the cost of electricity (COE), and the pre-combustion goal of 90% CO{sub 2} capture with less than a 10% increase in COE. The specific objective of this work is to develop innovative materials and approaches for the economic and efficient capture of CO{sub 2} from coal-based processes, and ultimately assess the performance of promising technologies at conditions representative of field application (i.e., slip stream evaluation). The Carbon Capture research includes seven core technical research areas: post-combustion solvents, sorbents, and membranes; pre-combustion solvents, sorbents, and membranes; and oxygen (O{sub 2}) production. The goal of each of these tasks is to develop advanced materials and processes that are able to reduce the energy penalty and cost of CO{sub 2} (or O{sub 2}) separation over conventional technologies. In the first year of development, materials will be examined by molecular modeling, and then synthesized and experimentally characterized at lab scale. In the second year, they will be tested further under ideal conditions. In the third year, they will be tested under realistic conditions. The most promising materials will be tested at the National Carbon Capture Center (NCCC) using actual flue or fuel gas. Systems analyses will be used to determine whether or not materials developed are likely to meet the Department of Energy (DOE) COE targets. Materials which perform well and appear likely to improve in performance will be licensed for further development outside of the National Energy Technology Laboratory (NETL), Office of Research and Development (ORD).

Luebke, David; Morreale, Bryan; Richards, George; Syamlal, Madhava

2014-04-16T23:59:59.000Z

272

A New Solar Carbon Capture Process: Solar Thermal Electrochemical Photo (STEP) Carbon Capture  

Science Journals Connector (OSTI)

A New Solar Carbon Capture Process: Solar Thermal Electrochemical Photo (STEP) Carbon Capture ... CO2 can be captured from 34% to over 50% solar energy efficiency (depending on the level of solar heat inclusion), as solid carbon and stored, or used as carbon monoxide to be available for a feedstock to synthesize (with STEP generated hydrogen) solar diesel fuel, synthetic jet fuel, or chemical production. ... STEP Iron, a Chemistry of Iron Formation without CO2 Emission: Molten Carbonate Solubility and Electrochemistry of Iron Ore Impurities ...

Stuart Licht; Baohui Wang; Susanta Ghosh; Hina Ayub; Dianlu Jiang; Jason Ganley

2010-07-14T23:59:59.000Z

273

Carbon Capture R&D | Department of Energy  

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

Capture R&D Capture R&D Carbon Capture R&D DOE's Carbon Capture Program, administered by the Office of Fossil Energy and the National Energy Technology Laboratory, is conducting research and development activities on Second Generation and Transformational carbon capture technologies that have the potential to provide step-change reductions in both cost and energy penalty as compared to currently available First Generation technologies. The Carbon Capture Program consists of two core research Technology Areas: (1) Post-Combustion Capture; and (2) Pre-Combustion Capture. Post-combustion capture is primarily applicable to fossil fuel based systems such as conventional pulverized coal (PC)-fired power plants, where the fuel is burned with air in a boiler to produce steam that drives

274

Carbon capture and sequestration versus carbon capture utilisation and storage for enhanced oil recovery  

Science Journals Connector (OSTI)

There are 74 integrated carbon capture projects worldwide currently listed by the Global ... oil recovery and those for permanent storage of carbon dioxide in saline aquifers or in depleted ... challenges related...

Bob Harrison; Gioia Falcone

2014-02-01T23:59:59.000Z

275

Carbon Dioxide Capture Process with Regenerable Sorbents  

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

Dioxide Capture Process with Regenerable Sorbents Dioxide Capture Process with Regenerable Sorbents sorbent material. Additionally, the design of the system incorporates a cross- flow moving-bed reactor where the gas flows horizontally through a "panel" of solid sorbent that is slowly moving down-wards under gravity flow. With the expanded use of fossil fuels expected throughout the world, the increase in CO 2 emissions may prove to contribute even more significantly to global climate change. To address this problem, carbon sequestration scientists and engineers have proposed a number of methods to remove CO 2 from gas streams, such as chemical absorption with a solvent, membrane separation, and cryogenic fractionation. However, all of these methods are expensive and possibly cost-prohibitive for a specific application.

276

Thermal neutron capture gamma-rays  

SciTech Connect

The energy and intensity of gamma rays as seen in thermal neutron capture are presented. Only those (n,..cap alpha..), E = thermal, reactions for which the residual nucleus mass number is greater than or equal to 45 are included. These correspond to evaluations published in Nuclear Data Sheets. The publication source data are contained in the Evaluated Nuclear Structure Data File (ENSDF). The data presented here do not involve any additional evaluation. Appendix I lists all the residual nuclides for which the data are included here. Appendix II gives a cumulated index to A-chain evaluations including the year of publication. The capture gamma ray data are given in two tables - the Table 1 is the list of all gamma rays seen in (n,..gamma..) reaction given in the order of increasing energy; the Table II lists the gamma rays according to the nuclide.

Tuli, J.K.

1983-01-01T23:59:59.000Z

277

Ordinary Muon Capture in Hydrogen Reexamined  

E-Print Network (OSTI)

The rate of muon capture in a muonic hydrogen atom is calculated in heavy-nucleon chiral perturbation theory up to next-to-next-to leading order. To this order, we present the systematic evaluation of all the corrections due to the QED and electroweak radiative corrections and the proton-size effect. Since the low-energy constants involved can be determined from other independent sources of information, the theory has predictive power. For the hyperfine-singlet $\\mu p$ capture rate $\\Gamma_0$, our calculation gives $\\Gamma_0=710 \\,\\pm 5\\,s^{-1}$, which is in excellent agreement with the experimental value obtained in a recent high-precision measurement by the MuCap Collaboration.

U. Raha; F. Myhrer; K. Kubodera

2013-06-03T23:59:59.000Z

278

Layered solid sorbents for carbon dioxide capture  

DOE Patents (OSTI)

A solid sorbent for the capture and the transport of carbon dioxide gas is provided having at least one first layer of a positively charged material that is polyethylenimine or poly(allylamine hydrochloride), that captures at least a portion of the gas, and at least one second layer of a negatively charged material that is polystyrenesulfonate or poly(acryclic acid), that transports the gas, wherein the second layer of material is in juxtaposition to, attached to, or crosslinked with the first layer for forming at least one bilayer, and a solid substrate support having a porous surface, wherein one or more of the bilayers is/are deposited on the surface of and/or within the solid substrate. A method of preparing and using the solid sorbent is provided.

Li, Bingyun; Jiang, Bingbing; Gray, McMahan L; Fauth, Daniel J; Pennline, Henry W; Richards, George A

2014-11-18T23:59:59.000Z

279

Muon Capture on the Proton and Deuteron  

E-Print Network (OSTI)

By measuring the lifetime of the negative muon in pure protium (hydrogen-1), the MuCap experiment determines the rate of muon capture on the proton, from which the proton's pseudoscalar coupling g_p may be inferred. A precision of 15% for g_p has been published; this is a step along the way to a goal of 7%. This coupling can be calculated precisely from heavy baryon chiral perturbation theory and therefore permits a test of QCD's chiral symmetry. Meanwhile, the MuSun experiment is in its final design stage; it will measure the rate of muon capture on the deuteron using a similar technique. This process can be related through pionless effective field theory and chiral perturbation theory to other two-nucleon reactions of astrophysical interest, including proton-proton fusion and deuteron breakup.

Frederick Gray

2008-08-11T23:59:59.000Z

280

Data Capture Technique for High Speed Signaling  

DOE Patents (OSTI)

A data capture technique for high speed signaling to allow for optimal sampling of an asynchronous data stream. This technique allows for extremely high data rates and does not require that a clock be sent with the data as is done in source synchronous systems. The present invention also provides a hardware mechanism for automatically adjusting transmission delays for optimal two-bit simultaneous bi-directional (SiBiDi) signaling.

Barrett, Wayne Melvin (Rochester, MN); Chen, Dong (Croton On Hudson, NY); Coteus, Paul William (Yorktwon Heights, NY); Gara, Alan Gene (Mount Kisco, NY); Jackson, Rory (Eastchester, NY); Kopcsay, Gerard Vincent (Yorktown Hieghts, NY); Nathanson, Ben Jesse (Teaneck, NY); Vranas, Paylos Michael (Bedford Hills, NY); Takken, Todd E. (Brewster, NY)

2008-08-26T23:59:59.000Z

Note: This page contains sample records for the topic "milliseconds electron capture" 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

Capturing Energy Savings with Steam Traps  

E-Print Network (OSTI)

Capturing Energy Savings with Steam Traps Richard C; Bockwinkel General Manager Armstrong Service? A Division of Armstrong International, Inc. Orlando, Florida ABSTRACT This paper will discuss the energy savings potential of steam... Engineer Steam Traps Armstrong International, Inc. Three Rivers, Michigan basis. Finally, it's important to recognize that a steam trap program will reduce steam waste> which will reduce the amount of fuel burned> which will reduce pollutants...

Bockwinkel, R. G.; French, S. A.

282

Chapter 14 - Carbon Capture and Storage  

Science Journals Connector (OSTI)

Abstract The vast majority of the energy in the world comes from hydrocarbons, which generate carbon dioxide when they are burned. As a consequence, the carbon dioxide levels in the atmosphere have risen dramatically, and the prevailing opinion is that increased atmospheric carbon dioxide is leading to global warming. The Kyoto accords were an international agreement designed to reduce carbon dioxide levels. These accords called for power generators to reduce carbon dioxide levels. The principal way to do this is to capture the carbon dioxide before it gets into the atmosphere and then sequester it underground. Carbon capture and sequestration technologies are reviewed here. There is no doubt that the world can generate all of its electricity without pumping any carbon dioxide into the atmosphere. This could be achieved in a 10-year time frame if the political will was there. But, if we want to seriously reduce the carbon dioxide emanating from automobiles, we have to make a major switch to electric vehicles. Even if the electricity is generated from hydrocarbon fuels, it will be done at a point source where the carbon dioxide can be captured and sequestered.

Brian F. Towler

2014-01-01T23:59:59.000Z

283

Mercury capture in bench-scale absorbers  

SciTech Connect

This paper gives,a brief overview of research being conducted at Argonne National Laboratory on the capture of mercury by both dry sorbents and wet scrubbers. The emphasis in the research is on development of a better understanding of the key factors that control the capture of mercury. Future work is expected to utilize that information for the development of new or modified process concepts featuring enhanced mercury capture capabilities. The results and conclusions to date from the Argonne -research on dry sorbents can be summarized as follows: lime hydrates, either regular or high-surface-area, are `not effective in removing mercury; mercury removals are enhanced by the addition of activated carbon; mercury removals with activated carbon decrease with increasing temperature, larger particle size, and decreasing mercury concentration in the gas; and chemical pretreatment (e.g., with sulfur or (CaCl{sub 2}) can greatly increase the removal capacity of activated carbon. Preliminary results from the wet scrubbing research include: no removal of elemental mercury is obtained under normal scrubber operating conditions; mercury removal is improved by the addition of packing or production of smaller gas bubbles to increase the gas-liquid contact area; polysulfide solutions do not appear promising for enhancing mercury removal in typical FGC systems; stainless steel packing appears to have beneficial properties for mercury removal and should be investigated further; and other chemical additives may offer greatly enhanced removals.

Livengood, C.D.; Huang, H.S.; Mendelsohn, M.H.; Wu, J.M.

1994-08-01T23:59:59.000Z

284

Post-combustion Carbon Capture with a Gas Separation Membrane: Parametric Study, Capture Cost, and Exergy Analysis  

Science Journals Connector (OSTI)

Post-combustion Carbon Capture with a Gas Separation Membrane: Parametric Study, Capture Cost, and Exergy Analysis ... (5) In a post-combustion CO2 capture process, the purity of the captured CO2 in the permeate stream mainly depends upon the selectivity of CO2 over the other gas species, such as N2 and O2. ... Capturing CO2 from flue gases in a power plant is not like traditional gas processing or purification, there are no strict requirements on the decarbonized sweet gas, which means no strict requirement on the CO2 concentration in the sweet gas or CO2 capture ratio. ...

Xiangping Zhang; Xuezhong He; Truls Gundersen

2013-03-04T23:59:59.000Z

285

Interatomic Coulombic Decay as a New Source of Low Energy Electrons in slow Ion-Dimer Collisions  

E-Print Network (OSTI)

We provide the experimental evidence that the single electron capture process in slow collisions between O$^{3+}$ ions and neon dimer targets leads to an unexpected production of low-energy electrons. This production results from the interatomic Coulombic decay process, subsequent to inner shell single electron capture from one site of the neon dimer. Although pure one-electron capture from inner shell is expected to be negligible in the low collision energy regime investigated here, the electron production due to this process overtakes by one order of magnitude the emission of Auger electrons by the scattered projectiles after double-electron capture. This feature is specific to low charge states of the projectile: similar studies with Xe$^{20+}$ and Ar$^{9+}$ projectiles show no evidence of inner shell single-electron capture. The dependence of the process on the projectile charge state is interpreted using simple calculations based on the classical over the barrier model.

Iskandar, W; Leredde, A; Flechard, X; Gervais, B; Guillous, S; Hennecart, D; Mery, A; Rangama, J; Zhou, C L; Shiromaru, H; Cassimi, A

2014-01-01T23:59:59.000Z

286

CO2 Capture by Absorption with Potassium Carbonate  

E-Print Network (OSTI)

CO2 Capture by Absorption with Potassium Carbonate Fourth Quarterly Report 2005 Quarterly Progress. #12;3 Abstract The objective of this work is to improve the process for CO2 capture by alkanolamine

Rochelle, Gary T.

287

CO2 Capture by Absorption with Potassium Carbonate  

E-Print Network (OSTI)

CO2 Capture by Absorption with Potassium Carbonate Third Quarterly Report 2005 Quarterly Progress. #12;3 Abstract The objective of this work is to improve the process for CO2 capture by alkanolamine

Rochelle, Gary T.

288

CO2 Capture by Absorption with Potassium Carbonate  

E-Print Network (OSTI)

CO2 Capture by Absorption with Potassium Carbonate First Quarterly Report 2006 Quarterly Progress the process for CO2 capture by alkanolamine absorption/stripping by developing an alternative solvent, aqueous

Rochelle, Gary T.

289

Study of Porous Adsorbents for Carbon Capture via Molecular Simulation  

E-Print Network (OSTI)

1.5 Porous adsorbents . . . . . . . 2 Evaluating mixtureStudy of Porous Adsorbents for Carbon Capture via MolecularFall 2012 Study of Porous Adsorbents for Carbon Capture via

Swisher, Joseph Andrew

2012-01-01T23:59:59.000Z

290

Boron Neutron Capture Therapy for Murine Malignant Gliomas  

Science Journals Connector (OSTI)

...September 1992 research-article Boron Neutron Capture Therapy for Murine Malignant Gliomas...Washington Street, Boston, MA 02111. Boron neutron capture therapy (BNCT) involves administration of a boron compound followed by neutron irradiation of the target organ. The...

Stephen C. Saris; Guido R. Solares; David E. Wazer; Guillermo Cano; Sarah E. Kerley; Melita A. Joyce; Lester S. Adelman; Otto K. Harling; Hywel Madoc-Jones; Robert G. Zamenhof

1992-09-01T23:59:59.000Z

291

Study of Porous Adsorbents for Carbon Capture via Molecular Simulation  

E-Print Network (OSTI)

Research Institute; Palo Alto, CA; 2009. [11] DOE/NETL;DOE/NETL Carbon Dioxide Capture and Storage RDD Roadmap;131, 18198–18199. [77] NETL; Carbon Dioxide Capture from

Swisher, Joseph Andrew

2012-01-01T23:59:59.000Z

292

Boron Neutron Capture Therapy of a Murine Melanoma  

Science Journals Connector (OSTI)

...glioblastoma multiforme treated by neutron capture therapy using boron-10. Cancer (Phila.), S: 601-615, 1955. 11. Asbury...of fourteen cases of malignant brain tumor treated by boron-10 slow neutron capture radiation. J. Neuropathol. Exp...

Jeffrey A. Coderre; John A. Kalef-Ezra; Ralph G. Fairchild; Peggy L. Micca; Lawrence E. Reinstein; John D. Glass

1988-11-15T23:59:59.000Z

293

Capturing the Sun, Creating a Clean Energy Future (Brochure)...  

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

Capturing the Sun, Creating a Clean Energy Future (Brochure), SunShot, Solar Energy Technologies Program (SETP), U.S. Department of Energy (DOE) Capturing the Sun, Creating a Clean...

294

New Funding Boosts Carbon Capture, Solar Energy and High Gas...  

Office of Environmental Management (EM)

Boosts Carbon Capture, Solar Energy and High Gas Mileage Cars and Trucks New Funding Boosts Carbon Capture, Solar Energy and High Gas Mileage Cars and Trucks June 11, 2009 -...

295

Capturing Waste Gas: Saves Energy, Lower Costs - Case Study,...  

Office of Environmental Management (EM)

Capturing Waste Gas: Saves Energy, Lower Costs - Case Study, 2013 Capturing Waste Gas: Saves Energy, Lower Costs - Case Study, 2013 ArcelorMittal USA, Inc.'s Indiana Harbor steel...

296

FACT SHEET: CARBON CAPTURE USE AND STORAGE ACTION GROUP  

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

CARBON CAPTURE USE AND STORAGE ACTION GROUP CARBON CAPTURE USE AND STORAGE ACTION GROUP At the Clean Energy Ministerial in Washington, D.C. on July 19 th and 20 th , ministers pledged to establish a Carbon Capture Use and Storage Action Group to be led by the United Kingdom and Australia to facilitate political and business leadership and develop a Global Strategic Implementation Plan to examine how to overcome key barriers to the deployment of Carbon Capture Use and Storage (CCUS).

297

Carbon Nanotube-Silver Composite for Mercury Capture and Analysis  

Science Journals Connector (OSTI)

The mechanisms of capturing mercury on a sorbent vary from amalgamation, chemical adsorption to simple physical adsorption. ... Untreated carbon-based sorbents and mineral-based sorbents capture mercury mainly via physical adsorption that allows release of captured mercury at slightly higher temperatures. ... This paper outlines the results of a systematic study on the capture of trace mercury vapor from simulated flue gases, using activated carbons. ...

Guangqian Luo; Hong Yao; Minghou Xu; Xinwei Cui; Weixing Chen; Rajender Gupta; Zhenghe Xu

2009-12-17T23:59:59.000Z

298

Value Capture in the Global Wind Energy Industry  

E-Print Network (OSTI)

K. 2007. Clipper Windpower: an overview of manufacturing.capture for 2.5MW Clipper Windpower Liberty turbine, 2008

Dedrick, Jason; Kraemer, Kenneth L.

2011-01-01T23:59:59.000Z

299

Biomass energy with carbon capture and storage (BECCS): a review  

E-Print Network (OSTI)

Biomass energy with carbon capture and storage (BECCS): a review Claire Gough, Paul Upham December are alternative terms for the coupling of bioenergy with carbon capture and storage (CCS). The paper follows from a workshop held in December 2009, hosted by the Scottish Centre for Carbon Capture and Storage

Matthews, Adrian

300

Carbon Dioxide Capture by Chemical Absorption: A Solvent Comparison Study  

E-Print Network (OSTI)

1 Carbon Dioxide Capture by Chemical Absorption: A Solvent Comparison Study by Anusha Kothandaraman Students #12;2 #12;3 Carbon Dioxide Capture by Chemical Absorption: A Solvent Comparison Study by Anusha with electricity generation accounting for 40% of the total1 . Carbon capture and sequestration (CCS) is one

Note: This page contains sample records for the topic "milliseconds electron capture" 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

Carbon Capture by Fossil Fuel Power Plants: An Economic Analysis  

E-Print Network (OSTI)

Carbon Capture by Fossil Fuel Power Plants: An Economic Analysis ¨Ozge I¸slegen Graduate School excellent research assistance. #12;Carbon Capture by Fossil Fuel Power Plants: An Economic Analysis Abstract: For fossil fuel power plants to be built in the future, carbon capture and storage (CCS) technologies offer

Silver, Whendee

302

Pilot Plant Study of Carbon Dioxide Capture by Aqueous Monoethanolamine  

E-Print Network (OSTI)

i Pilot Plant Study of Carbon Dioxide Capture by Aqueous Monoethanolamine Topical Report Prepared Pilot Plant Study of Carbon Dioxide Capture by Aqueous Monoethanolamine Ross Edward Dugas, M capture using monoethanolamine (MEA). MEA is an appropriate choice for a baseline study since

Rochelle, Gary T.

303

Peer Reviewed: What Future for Carbon Capture and Sequestration?  

Science Journals Connector (OSTI)

Peer Reviewed: What Future for Carbon Capture and Sequestration? ... A New Porous Material to Enhance the Kinetics of Clathrate Process: Application to Precombustion Carbon Dioxide Capture ... A New Porous Material to Enhance the Kinetics of Clathrate Process: Application to Precombustion Carbon Dioxide Capture ...

Howard J. Herzog

2001-04-01T23:59:59.000Z

304

The Social Dynamics of Carbon Capture and Storage  

E-Print Network (OSTI)

The Social Dynamics of Carbon Capture and Storage Understanding CCS Representations, Governance studies. He works as a Research Associate at the Scottish Carbon Capture and Storage research centre at the Scottish Carbon Capture and Storage research centre at the University of Edinburgh. His research focuses

305

THE COST OF CARBON CAPTURE Jeremy David and Howard Herzog  

E-Print Network (OSTI)

THE COST OF CARBON CAPTURE Jeremy David and Howard Herzog Massachusetts Institute of Technology's technology for CO2 separation and capture at three types of power plants: integrated coal gasification (NGCC). The analysis was based on studies from the literature that analyzed the economics of capturing

306

Designed amyloid fibers as materials for selective carbon dioxide capture  

E-Print Network (OSTI)

Designed amyloid fibers as materials for selective carbon dioxide capture Dan Lia,b,c,1 , Hiroyasu demonstrate that amyloids, self-assembling protein fibers, are effective for selective carbon dioxide capture formation rate is fast enough to capture carbon dioxide by dynamic separation, undiminished by the presence

307

DEVELOPING CARBON CAPTURE AND STORAGE Howard J Herzog  

E-Print Network (OSTI)

DEVELOPING CARBON CAPTURE AND STORAGE 1 Howard J Herzog MIT Energy Initiative Massachusetts, it is unreasonable to expect carbon capture and storage (CCS) to be deployed on a large-scale without strong climate://www.management-thinking.org/content/developing-carbon-capture-and-storage #12;

308

Electrochemically Mediated Separation for Carbon Capture Michael C. Sterna  

E-Print Network (OSTI)

1 Electrochemically Mediated Separation for Carbon Capture Michael C. Sterna , Fritz Simeona. ___________________________________________________________________________________ Abstract Carbon capture technology has been proposed as an effective approach for the mitigation potential for facilitating CO2 capture at industrial-scale carbon emitters; however, the total operational

309

Economic Modeling of Carbon Capture and Sequestration Technologies  

E-Print Network (OSTI)

Economic Modeling of Carbon Capture and Sequestration Technologies Jim McFarland (jrm1@mit.edu; +1 explores the economics of carbon capture and sequestration technologies as applied to electric generating of the world economy, is used to model two of the most promising carbon capture and sequestration (CCS

310

Free-electron induced chemistry Theoretical Chemistry Section, BARC, Mumbai  

E-Print Network (OSTI)

initiated after the resonant capture low energy free-electrons into considerable interest for various fields reactions is the electronic potential energy surface of the electron compound. In the first half of the talk, I shall present the quantum chemical methodologies for computing the potential energy surfaces

Shyamasundar, R.K.

311

Strategies for Demonstration and Early Deployment of Carbon Capture and Storage: A Technical and Economic Assessment of Capture Percentage  

E-Print Network (OSTI)

Strategies for Demonstration and Early Deployment of Carbon Capture and Storage: A Technical;2 #12;Strategies for Demonstration and Early Deployment of Carbon Capture and Storage: A Technical and Policy at the Massachusetts Institute of Technology ABSTRACT Carbon capture and storage (CCS

312

Building an electronic drafting table for sketch recognition  

E-Print Network (OSTI)

Sketch recognition as developed by the CSAIL Design Rationale Group allows a designer to sketch out and test design ideas without the need for complicated CAD programs. An electronic drafting table is required to capture ...

Bruening, Oskar Ernst, 1979-

2004-01-01T23:59:59.000Z

313

Recent advances in neutron capture therapy (NCT)  

SciTech Connect

The application of the /sup 10/B(n,..cap alpha..)/sup 7/Li reaction to cancer radiotherapy (Neutron Capture therapy, or NCT) has intrigued investigators since the discovery of the neutron. This paper briefly summarizes data describing recently developed boronated compounds with evident tumor specificity and extended biological half-lives. The implication of these compounds to NCT is evaluated in terms of Therapeutic Gain (TG). The optimization of NCT using band-pass filtered beams is described, again in terms of TG, and irradiation times with these less intense beams are estimated. 24 refs., 3 figs., 3 tabs.

Fairchild, R.G.

1985-01-01T23:59:59.000Z

314

Wyoming Carbon Capture and Storage Institute  

SciTech Connect

This report outlines the accomplishments of the Wyoming Carbon Capture and Storage (CCS) Technology Institute (WCTI), including creating a website and online course catalog, sponsoring technology transfer workshops, reaching out to interested parties via news briefs and engaging in marketing activities, i.e., advertising and participating in tradeshows. We conclude that the success of WCTI was hampered by the lack of a market. Because there were no supporting financial incentives to store carbon, the private sector had no reason to incur the extra expense of training their staff to implement carbon storage. ii

Nealon, Teresa

2014-06-30T23:59:59.000Z

315

Capture of carbon dioxide by hybrid sorption  

DOE Patents (OSTI)

A composition, process and system for capturing carbon dioxide from a combustion gas stream. The composition has a particulate porous support medium that has a high volume of pores, an alkaline component distributed within the pores and on the surface of the support medium, and water adsorbed on the alkaline component, wherein the proportion of water in the composition is between about 5% and about 35% by weight of the composition. The process and system contemplates contacting the sorbent and the flowing gas stream together at a temperature and for a time such that some water remains adsorbed in the alkaline component when the contact of the sorbent with the flowing gas ceases.

Srinivasachar, Srivats

2014-09-23T23:59:59.000Z

316

Neutron Captures in the r-Process  

E-Print Network (OSTI)

The r-process involves neutron-rich nuclei far off stability for which no experimental cross sections are known. Therefore, one has to rely on theory. The difficulties in the predictions are briefly addressed. To investigate the impact of altered rates, a comparison of r-process production in hot bubble models with largely varied rates is shown. Due to the (n,gamma)-(gamma,n) equilibrium established at the onset of the r-process, only late-time neutron captures are important which mainly modify the abundances around the third r-process peak.

T. Rauscher

2004-04-12T23:59:59.000Z

317

Average resonance capture study of Te124  

Science Journals Connector (OSTI)

An average resonance capture study of Te124 was carried out by bombarding samples of Te123 with 2- and 24-keV neutron beams. The complete set of 0+, 1+, 2+ states disclosed by the experiment is consistent with the data of Robinson, Hamilton, and Snelling, demonstrating that there are no undetected states of these spins (especially 0+ states) below about 2500 keV. In particular, proposed 0+ levels at 1156 and 1290 keV are ruled out. This impacts various attempted interpretations in terms of intruder states, U(5), and O(6) symmetries.

R. F. Casten; J.-Y. Zhang; B.-C. Liao

1991-07-01T23:59:59.000Z

318

Chaotic string-capture by black hole  

Science Journals Connector (OSTI)

We consider a macroscopic charge-current carrying (cosmic) string in the background of a Schwarzschild black hole. The string is taken to be circular and is allowed to oscillate and to propagate in the direction perpendicular to its plane (that is parallel to the equatorial plane of the black hole). Numerical investigations indicate that the system is non-integrable, but the interaction with the gravitational field of the black hole still gives rise to various qualitatively simple processes like `adiabatic capture' and `string transmutation'.

A L Larsen

1994-01-01T23:59:59.000Z

319

Calcifying Cyanobacteria - The potential of biomineralization for Carbon Capture and Storage  

E-Print Network (OSTI)

Herzog H, Golomb D: Carbon Capture and Storage from Fossil for point-source carbon capture and sequestration. Althoughof renewable biofuels, and carbon capture and storage (CCS).

Jansson, Christer G

2010-01-01T23:59:59.000Z

320

Spatially-explicit impacts of carbon capture and sequestration on water supply and demand  

E-Print Network (OSTI)

Annual Conference on Carbon Capture and Sequestration, MayEleventh Annual Carbon Capture, Utilization & Sequestrationplants with and without carbon capture. Presentation at 2009

Sathre, Roger

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "milliseconds electron capture" 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

A Framework for Environmental Assessment of CO2 Capture and Storage Systems  

E-Print Network (OSTI)

Aaron DS, Williams KA. Is carbon capture and storage reallyal. Comparison of carbon capture and storage with renewablefuel power plants with carbon capture and storage. Energy

Sathre, Roger

2013-01-01T23:59:59.000Z

322

Disagreement between capture probabilities extracted from capture and quasi-elastic backscattering excitation functions  

E-Print Network (OSTI)

Experimental quasi-elastic backscattering and capture (fusion) excitation functions are usually used to extract the s-wave capture probabilities for the heavy-ion reactions. We investigated the $^{16}$O+$^{120}$Sn,$^{144}$Sm,$^{208}$Pb systems at energies near and below the corresponding Coulomb barriers and concluded that the probabilities extracted from quasi-elastic data are much larger than the ones extracted from fusion excitation functions at sub and deep-sub barrier energies. This seems to be a reasonable explanation for the known disagreement observed in literature for the nuclear potential diffuseness derived from both methods.

V. V. Sargsyan; G. G. Adamian; N. V. Antonenko; R. P. S. Gomes

2014-06-05T23:59:59.000Z

323

Energy Department Investments in Innovative Carbon Capture Projects |  

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

Energy Department Investments in Innovative Carbon Capture Projects Energy Department Investments in Innovative Carbon Capture Projects Energy Department Investments in Innovative Carbon Capture Projects Post-Combustion CO2 Capture Technologies COMPANY CITY & STATE PROJECT TITLE DOE INVESTMENT PROJECT DESCRIPTION SRI International Menlo Park, CA CO2 Capture Using Advanced Carbon Sorbents at a Slipstream Scale Approx. $10.5 million The project team will test a CO2 sorbent capture process and conduct pilot-scale testing of the sorbent under realistic conditions to validate affordability and opportunities for CO2 use in commercial applications such as enhanced oil recovery or chemical operations. SRI International Menlo Park, CA Development of Mixed-Salt Technology for CO2 Capture from Coal Power Plants Approx. $1.7 million Researchers will develop and test a low-cost, solvent-based technology to extract CO2 from existing or new pulverized coal power plants by combining the benefits of two different solvents.

324

Enhanced carbon capture biosorption through process manipulation  

Science Journals Connector (OSTI)

Abstract The feasibility of manipulating operating parameters, i.e. Food-to-microorganisms (F/M) ratio, SRT, and residual DO, to enhance biosorption performance was investigated. It was observed that lower F/M and longer SRT resulted in sludges which captured carbon mainly through carbon storage. Surface sorption, however, was the dominant mechanism for sludges grown under the higher DO condition. Generally, biosorption was optimal at pH 7. Sorption kinetic studies revealed that sludge cultivated under the low F/M ratio of 0.15 (Sludge S1) showed the best overall biosorption performance. Determination of calorific value revealed that Sludge S1 was able to capture energy as much as 0.9 kJ/g SS within 15 min contact time. About 66.3% of the overall biosorption capacity was attributed to carbon storage. Sludge S1 was able to accumulate organic substrate and stored this as polyhydroxyalkanoates (PHA). Culture-independent microbial community analysis through DGGE revealed the presence of strains capable of PHA-accumulation, e.g. Rhodobacter sp., and Thauera sp. While different dominating mechanisms resulted from different cultivation conditions, the best biosorption performance was significantly contributed by carbon storage activity.

Choon-Ping Lim; Sheng Zhang; Yan Zhou; Wun Jern Ng

2015-01-01T23:59:59.000Z

325

Neutron capture in laser-fusion pellets  

Science Journals Connector (OSTI)

Investigating the feasibility of obtaining slow neutron fluencies sufficient for multiple-capture nucleosynthesis, we have applied a Monte Carlo technique to determine the moderation of neutrons in a superdense laser-energized fusion pellet. We studied pellets of varying chemical composition and structure ranging in size from ?R?1 to 50 g/cm2 and found our results to be rather insensitive to the parametrization of the hydrodynamic motion. That is, the neutron spectra were largely unaffected by reasonable variations of peak density, time of disassembly, and shape of the density profile. A useful method of improving the ratio of moderated to unmoderated neutrons was to dilute the thermonuclear fuel with hydrogen and/or the addition of a beryllium reflector. We also calculated the ratio of fission, neutron capture, and (n, p) reactions in pellets seeded with traces of U238 target material.NUCLEAR REACTIONS Calculated neutron fluxes and neutron-nucleus reactions for parametrized thermonuclear explosions of H2H3 and H2H2 laser-fusion pellets with moderators and target material.

John Henley and Heiner W. Meldner

1975-08-01T23:59:59.000Z

326

It's Elemental - Isotopes of the Element Magnesium  

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

Sodium Sodium Previous Element (Sodium) The Periodic Table of Elements Next Element (Aluminum) Aluminum Isotopes of the Element Magnesium [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Mass Number Natural Abundance Half-life 24 78.99% STABLE 25 10.00% STABLE 26 11.01% STABLE Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 19 4.0 picoseconds Double Proton Emission 100.00% 20 90.8 milliseconds Electron Capture 100.00% Electron Capture with delayed Proton Emission ~ 27.00% 21 122 milliseconds Electron Capture 100.00% Electron Capture with delayed Proton Emission 32.60% Electron Capture with delayed Alpha Decay < 0.50%

327

It's Elemental - Isotopes of the Element Phosphorus  

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

Silicon Silicon Previous Element (Silicon) The Periodic Table of Elements Next Element (Sulfur) Sulfur Isotopes of the Element Phosphorus [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Mass Number Natural Abundance Half-life 31 100% STABLE Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 24 No Data Available Electron Capture (suspected) No Data Available Proton Emission (suspected) No Data Available 25 < 30 nanoseconds Proton Emission 100.00% 26 43.7 milliseconds Electron Capture 100.00% Electron Capture with delayed Proton Emission No Data Available 27 260 milliseconds Electron Capture 100.00% Electron Capture with

328

Calculation of Doublet Capture Rate for Muon Capture in Deuterium within Chiral Effective Field Theory  

E-Print Network (OSTI)

The doublet capture rate of the negative muon capture in deuterium is calculated employing the nuclear wave functions generated from accurate nucleon-nucleon potentials constructed at next-to-next-to-next-to-leading order of heavy-baryon chiral perturbation theory and the weak meson exchange current operator derived within the same formalism. All but one of the low-energy constants that enter the calculation were fixed from pion-nucleon and nucleon-nucleon scattering data. The low-energy constant d^R (c_D), which cannot be determined from the purely two-nucleon data, was extracted recently from the triton beta-decay and the binding energies of the three-nucleon systems. The calculated values of the doublet capture rates show a rather large spread for the used values of the d^R. Precise measurement of the doublet capture rate in the future will not only help to constrain the value of d^R, but also provide a highly nontrivial test of the nuclear chiral EFT framework. Besides, the precise knowledge of the constant d^R will allow for consistent calculations of other two-nucleon weak processes, such as proton-proton fusion and solar neutrino scattering on deuterons, which are important for astrophysics.

J. Adam, Jr.; M. Tater; E. Truhlik; E. Epelbaum; R. Machleidt; P. Ricci

2012-01-31T23:59:59.000Z

329

Diversity of abundance patterns of neutron-capture elements in very metal-poor stars  

SciTech Connect

Observations of Very Metal-Poor stars indicate that there are at least two sites to r-process; “weak r-process” and “main r-process”. A question is whether these two are well separated or there exists a variation in the r-process. We present the results of abundance analysis of neutron-capture elements in the two Very Metal-Poor stars HD107752 and HD110184 in the Milky Way halo observed with the Subaru Telescope HDS. The abundance patterns show overabundace at light n-capture elements (e.g. Sr, Y), inferring the element yielding of weak r-process, while heavy neutron-capture elements (e.g. Ba, Eu) are deficient; however, the overabundance of light ones is not as significant as that previously found in stars representing the weak r-process (e.g. HD122563; Honda et al. 2006). Our study show diversity in the abundance patterns from light to heavy neutron-capture elements in VMP stars, suggesting a variation in r-process, which may depend on electron fraction of environment.

Aoki, Misa; Ishimaru, Yuhri [International Christian University 10-2, Osawa, Mitaka, Tokyo 181-0015 (Japan); Aoki, Wako; Wanajo, Shinya [National Astronomical Observatory of Japan (NAOJ) 2-21-1, Osawa, Mitaka, Tokyo 181-8588 (Japan)

2014-05-02T23:59:59.000Z

330

Carbon Capture Pilots (Kentucky) | Open Energy Information  

Open Energy Info (EERE)

Pilots (Kentucky) Pilots (Kentucky) No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Last modified on February 12, 2013. EZFeed Policy Place Kentucky Name Carbon Capture Pilots (Kentucky) Policy Category Other Policy Policy Type Industry Recruitment/Support Affected Technologies Coal with CCS Active Policy Yes Implementing Sector State/Province Primary Website http://energy.ky.gov/carbon/Pages/default.aspx Summary Support for the Carbon Management Research Group (CMRG), a public/private partnership consisting of most of the Commonwealth's utilities, the Electric Power Research Institute, the Center for Applied Energy Research (CAER), and the Department for Energy Development and Independence (DEDI),

331

DOE Signs Cooperative Agreement for Carbon Capture Project | Department of  

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

Signs Cooperative Agreement for Carbon Capture Project Signs Cooperative Agreement for Carbon Capture Project DOE Signs Cooperative Agreement for Carbon Capture Project June 18, 2010 - 1:00pm Addthis Washington, DC - The U.S. Department of Energy has signed a cooperative agreement with NRG Energy Inc. (NRG) for the Parish Post-Combustion CO2 Capture and Sequestration Project to design, construct, and operate a system that will capture and store approximately 400,000 tons of carbon dioxide (CO2) per year. The project, which will be managed by the Office of Fossil Energy's National Energy Technology Laboratory, was selected under DOE's Clean Coal Power Initiative, a collaboration between the federal government and private industry working toward low-emission, coal-based power generation technology. The project team aims to demonstrate that post-combustion carbon capture

332

Worldwide Carbon Capture and Storage Projects on the Increase | Department  

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

Worldwide Carbon Capture and Storage Projects on the Increase Worldwide Carbon Capture and Storage Projects on the Increase Worldwide Carbon Capture and Storage Projects on the Increase November 13, 2009 - 12:00pm Addthis Washington, D.C. -- Worldwide efforts to fund and establish carbon capture and storage (CCS) projects have accelerated, according to a new Department of Energy (DOE) online database, indicating ongoing positive momentum toward achieving the G-8 goal for launching 20 CCS demonstrations by 2010. The database, a project of the Office of Fossil Energy's (FE) National Energy Technology Laboratory (NETL), reveals 192 proposed and active CCS projects worldwide. The projects are located in 20 countries across five continents. The 192 projects globally include 38 capture, 46 storage, and 108 for capture and storage. While most of the projects are still in the

333

Secretary Moniz Tours Kemper Carbon Capture and Storage Facility |  

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

Secretary Moniz Tours Kemper Carbon Capture and Storage Facility Secretary Moniz Tours Kemper Carbon Capture and Storage Facility Secretary Moniz Tours Kemper Carbon Capture and Storage Facility Addthis 1 of 5 A group including U.S. Secretary of Energy Ernest J. Moniz and Mississippi Gov. Phil Bryant tours the Kemper carbon capture and storage facility in Liberty, Mississippi, on Friday, Nov. 8. Kemper is the largest carbon capture and storage facility in the United States. | Photo Copyright 2013 Southern Company. 2 of 5 Southern Company CEO Tom Fanning, far right, and Mississippi Power CEO Ed Holland, second from right, greet U.S. Secretary of Energy Ernest J. Moniz, left, as he arrives to tour the Kemper carbon capture and storage facility in Liberty, Mississippi. | Photo Copyright 2013 Southern Company. 3 of 5 Southern Company CEO Tom Fanning, left, and U.S. Secretary of Energy Ernest

334

NETL: Carbon Storage - NETL Carbon Capture and Storage Database  

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

CCS Database CCS Database Carbon Storage NETL's Carbon Capture, Utilization, and Storage Database - Version 4 Welcome to NETL's Carbon Capture, Utilization, and Storage (CCUS) Database. The database includes active, proposed, canceled, and terminated CCUS projects worldwide. Information in the database regarding technologies being developed for capture, evaluation of sites for carbon dioxide (CO2) storage, estimation of project costs, and anticipated dates of completion is sourced from publically available information. The CCUS Database provides the public with information regarding efforts by various industries, public groups, and governments towards development and eventual deployment of CCUS technology. As of November 2012, the database contained 268 CCUS projects worldwide. The 268 projects include 68 capture, 61 storage, and 139 for capture and storage in more than 30 countries across 6 continents. While most of the projects are still in the planning and development stage, or have recently been proposed, 37 are actively capturing and injecting CO2

335

Department of Energy Announces $41 Million Investment for Carbon Capture  

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

$41 Million Investment for Carbon $41 Million Investment for Carbon Capture Development Department of Energy Announces $41 Million Investment for Carbon Capture Development August 25, 2011 - 1:00pm Addthis Washington, DC - The U.S. Department of Energy announced today the selection of 16 projects aimed at developing advanced post-combustion technologies for capturing carbon dioxide (CO2) from coal-fired power plants. The projects, valued at $41 million over three years, are focused on reducing the energy and cost penalties associated with applying currently available carbon capture technologies to existing and new power plants. The selections announced today will focus on developing carbon capture technologies that can achieve at least 90 percent CO2 removal and reduce the added costs at power plants with carbon capture systems to no more than

336

National Carbon Capture Center Launches Post-Combustion Test Center |  

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

National Carbon Capture Center Launches Post-Combustion Test Center National Carbon Capture Center Launches Post-Combustion Test Center National Carbon Capture Center Launches Post-Combustion Test Center June 7, 2011 - 1:00pm Addthis Washington, D.C. - The recent successful commissioning of an Alabama-based test facility is another step forward in research that will speed deployment of innovative post-combustion carbon dioxide (CO2) capture technologies for coal-based power plants, according to the U.S. Department of Energy (DOE). Technologies tested at the Post-Combustion Carbon Capture Center (or PC4) are an important component of Carbon Capture and Storage, whose commercial deployment is considered by many experts as essential for helping to reduce human-generated CO2 emissions that contribute to potential climate change.

337

DOE Signs Cooperative Agreement for Carbon Capture Project | Department of  

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

Signs Cooperative Agreement for Carbon Capture Project Signs Cooperative Agreement for Carbon Capture Project DOE Signs Cooperative Agreement for Carbon Capture Project June 18, 2010 - 1:00pm Addthis Washington, DC - The U.S. Department of Energy has signed a cooperative agreement with NRG Energy Inc. (NRG) for the Parish Post-Combustion CO2 Capture and Sequestration Project to design, construct, and operate a system that will capture and store approximately 400,000 tons of carbon dioxide (CO2) per year. The project, which will be managed by the Office of Fossil Energy's National Energy Technology Laboratory, was selected under DOE's Clean Coal Power Initiative, a collaboration between the federal government and private industry working toward low-emission, coal-based power generation technology. The project team aims to demonstrate that post-combustion carbon capture

338

Department of Energy Announces $41 Million Investment for Carbon Capture  

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

1 Million Investment for Carbon 1 Million Investment for Carbon Capture Development Department of Energy Announces $41 Million Investment for Carbon Capture Development August 25, 2011 - 1:36pm Addthis Washington, D.C. - The U.S. Department of Energy announced today the selection of 16 projects aimed at developing advanced post-combustion technologies for capturing carbon dioxide (CO2) from coal-fired power plants. The projects, valued at $41 million over three years, are focused on reducing the energy and cost penalties associated with applying currently available carbon capture technologies to existing and new power plants. The selections announced today will focus on developing carbon capture technologies that can achieve at least 90 percent CO2 removal and reduce the added costs at power plants with carbon capture systems to no more than

339

AVESTAR® - Oxy-Coal Carbon Capture (OCCC) Dynamic Simulator  

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

Oxy-Coal Carbon Capture (OCCC) Dynamic Simulator Oxy-Coal Carbon Capture (OCCC) Dynamic Simulator FutureGen 2.0 is a first-of-its-kind, near-zero emissions coal-fueled power plant using oxy-combustion technology to capture the plant's carbon emissions. To help meet the Nation's ever growing demand for clean energy, the FutureGen Industrial Alliance (Alliance) was formed to test and commercialize advanced coal-based systems fully integrated with carbon capture and geologic storage technologies. In cooperation with the U.S. Department of Energy (DOE), the Alliance and its project partners AirLiquide and Babcock & Wilcox, will upgrade an existing power plant in Meredosia, Illinois with oxy-coal carbon capture (OCCC) technology to capture and permanantly store approximately 1.0 million tonnes of CO2 each year.

340

Carbon Dioxide Capture by Absorption with Potassium Carbonate  

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

Carbon Dioxide Capture by Absorption Carbon Dioxide Capture by Absorption with Potassium Carbonate Background Although alkanolamine solvents, such as monoethanolamine (MEA), and solvent blends have been developed as commercially-viable options for the absorption of carbon dioxide (CO 2 ) from waste gases, natural gas, and hydrogen streams, further process improvements are required to cost-effectively capture CO 2 from power plant flue gas. The promotion of potassium carbonate (K

Note: This page contains sample records for the topic "milliseconds electron capture" 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
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341

A vareity of Hg capture solutions are available  

SciTech Connect

While vacating the Clean Air Mercury Rule (CAMR) has postponed implementation of capturing mercury emitted by coal-fired power plants improvements in ways to capture and monitor mercury have continued. One method of enhancing Hg capture from FGD and SCR is to treat the coal by adding a halogen, such as calcium bromide in Alstom's KNX process prior to combustion. Power plants without FGD usually use sorbent injection, mostly an activated carbon, upstream of a particulate control device. 1 fig.

Blankinship, S.

2009-06-15T23:59:59.000Z

342

Derivation of capture cross section from quasielastic excitation function  

E-Print Network (OSTI)

The relationship between the quasielastic excitation function and the capture cross section is derived. The quasielastic data is shown to be a useful tool to extract the capture cross sections and the angular momenta of the captured systems for the reactions $^{16}$O+$^{144,154}$Sm,$^{208}$Pb, $^{20}$Ne+$^{208}$Pb, and $^{32}$S+$^{90,96}$Zr at near and above the Coulomb barrier energies.

V. V. Sargsyan; G. G. Adamian; N. V. Antonenko; P. R. S. Gomes

2013-04-18T23:59:59.000Z

343

Longitudinal capture in the radio-frequency-quadrupole structure  

SciTech Connect

The radio-frequency-quadrupole (RFQ) linac structure not only can attain easily transverse focusing in the low-beta region, but also can obtain very high capture efficiency because of its low beta-lambda and low-particle rigidity. An optimization study of the zero space-charge longitudinal capture in an RFQ linac that yields configurations with large capture efficiency is described.

Inagaki, S.

1980-03-01T23:59:59.000Z

344

The muon capture in {sup 16}O: the angular and polarization correlations  

SciTech Connect

Longitudinal polarization of the daughter nuclei {sup 16}N which arises in Micro-Sign {sup -} capture on {sup 16}O as a function of the recoil angle, together with the angular distribution and the alignment of the recoil nucleus are calculated. The neutrinos born escape mainly along the muon spin. The polarization is found to vary from zero (recoil momentum counter to the muon spin direction) up to 50% (along the muon spin direction). The results can be applied to the experimental tests of T conservation, to the analysis of the projects of constructing the powerful mono-energetic neutrino sources, to the experimental study of the pseudo-scalar form factor and the K-electron capture, and to other spin-polarization correlation experiments.

Karpeshin, F. F., E-mail: fkarpeshin@yandex.ru [University of Buenos Aires (Argentina); Isakov, V. I., E-mail: visakov@thd.pnpi.spb.ru [Petersburg Nuclear Physics Institute (Russian Federation)

2012-02-15T23:59:59.000Z

345

Carbon Capture, Utilization & Storage | Department of Energy  

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

Carbon Capture, Utilization & Storage Carbon Capture, Utilization & Storage Carbon Capture, Utilization & Storage Lawrence Livermore National Laboratory demonstrated coal gasification in large-scale field experiments at the Rocky Mountain Test Facility (above) near Hanna, Wyoming. Coal gasification and sequestration of the carbon dioxide produced are among the technologies being used in a Texas Clean Energy Project. Lawrence Livermore National Laboratory demonstrated coal gasification in large-scale field experiments at the Rocky Mountain Test Facility (above) near Hanna, Wyoming. Coal gasification and sequestration of the carbon dioxide produced are among the technologies being used in a Texas Clean Energy Project. Carbon capture, utilization and storage (CCUS), also referred to as carbon

346

Evaluating different classes of porous materials for carbon capture...  

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

Evaluating different classes of porous materials for carbon capture Previous Next List Johanna Maria Huck, Li-Chiang Lin, Adam Berger, Mahdi Niknam Shahrak, Richard Luis Martin,...

347

Strategic Analysis of the Global Status of Carbon Capture and...  

Open Energy Info (EERE)

Strategic Analysis of the Global Status of Carbon Capture and Storage (CCS): Country Studies, United Arab Emirates Jump to: navigation, search Tool Summary LAUNCH TOOL Name:...

348

Carbon Dioxide Capture and Storage Demonstration in Developing...  

Open Energy Info (EERE)

Key Policy Issues and Barriers Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Carbon Dioxide Capture and Storage Demonstration in Developing Countries: Analysis of Key...

349

Synthesis, Structure, and Carbon Dioxide Capture Properties of...  

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

Synthesis, Structure, and Carbon Dioxide Capture Properties of Zeolitic Imidazolate Frameworks Previous Next List Anh Phan, Christian J. Doonan, Fernando J. Uribe-Romo, Carolyn B....

350

Neutron capture cross sections for neutron-rich isotopes  

Science Journals Connector (OSTI)

Average continuum (Hauser-Feshbach) and resonance (Breit-Wigner) neutron capture rates for neutron-rich isotopes, determined on the basis of...

B. Leist; W. Ziegert; M. Wiescher…

1985-01-01T23:59:59.000Z

351

Rechargeable Heat Battery's Secret Revealed: Solar Energy Capture...  

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

Rechargeable Heat Battery Rechargeable Heat Battery's Secret Revealed Solar energy capture in chemical form makes it storable and transportable January 11, 2011 | Tags: Chemistry,...

352

A generic capture assay for immunogenicity, using Biacore.  

E-Print Network (OSTI)

?? The purpose of this investigation was to create and optimise a capture assay for the detectionof anti-drug antibodies (ADA) in human plasma, using Biacore.… (more)

Engqvist, Martin

2013-01-01T23:59:59.000Z

353

Motion Capture of Character Interactions with a Rope.  

E-Print Network (OSTI)

??We present a solution to animating interactions between characters and thin, non-rigid bodies using a passive optical motion capture system. Prior work in human body… (more)

Porter, Bryce Zachary

2012-01-01T23:59:59.000Z

354

The Economic Impacts of Technical Change in Carbon Capture.  

E-Print Network (OSTI)

??There is a general consensus in the literature that carbon capture and storage (CCS), a technology that controls CO2 emissions from fossil fuel power plants,… (more)

Rasmussen, Peter G.

2012-01-01T23:59:59.000Z

355

Impacts of capture and handling on wild birds.  

E-Print Network (OSTI)

??Bird ringing is a key ecological research technique that involves the capture and handling of birds. It is used extensively to obtain information on population… (more)

Duarte, Leila

2013-01-01T23:59:59.000Z

356

Local Fermi gas in inclusive muon capture from nuclei  

E-Print Network (OSTI)

We compare local Fermi gas and shell model in muon capture in nuclei in order to estimate the effect of finite nuclear size in low energy weak reactions.

J. E. Amaro; J. Nieves; M. Valverde; C. Maieron

2006-05-20T23:59:59.000Z

357

Ammonia Capture in Porous Organic Polymers Densely Functionalized...  

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

Ammonia Capture in Porous Organic Polymers Densely Functionalized with Brnsted Acid Groups Previous Next List Jeffrey F. Van Humbeck, Thomas M. McDonald, Xiaofei Jing, Brian M....

358

A Motion Capture System Based on Natural Interaction Devices.  

E-Print Network (OSTI)

??This thesis investigated the feasibility of building a simple and affordable motion capturing system. A pre-study was made to understand the potential uses and benefits… (more)

Fahim, George

2012-01-01T23:59:59.000Z

359

Integrating Autodesk Mayas muscle simulation with Kinect motion capture.  

E-Print Network (OSTI)

?? Abstract In most of the animation pipelines today, motion capture and different simulations e.g. Autodesk Maya Muscle is used to get a more realistic… (more)

Axelsson, Jessica

2014-01-01T23:59:59.000Z

360

Lab captures five Society for Technical Communication awards  

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

awards Lab captures five Society for Technical Communication awards Reducing Global Threats through Innovative Science and Technology rendered as a deck of playing cards, earned...

Note: This page contains sample records for the topic "milliseconds electron capture" 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

A Critical Assessment of Boron Neutron Capture Therapy: An Overview  

Science Journals Connector (OSTI)

Boron neutron capture therapy (BNCT) is based on the nuclear reaction that occurs when boron-10 is irradiated with neutrons of the appropriate...

Rolf F. Barth

2003-03-01T23:59:59.000Z

362

Pre-Clinical Studies on Boron Neutron Capture Therapy  

Science Journals Connector (OSTI)

Boron neutron capture therapy (BNCT) is based on the nuclear reaction that occurs when boron-10 is irradiated with thermal neutrons to yield...1

Rolf F. Barth; Albert H. Soloway…

1989-01-01T23:59:59.000Z

363

Carbon Capture and Storage Poster | Department of Energy  

Office of Environmental Management (EM)

Carbon Capture and Storage - In Depth (poster) More Documents & Publications Geologic Carbon Dioxide Storage Field Projects Supported by DOE's Sequestration Program Training...

364

Water Challenges for Geologic Carbon Capture and Sequestration  

E-Print Network (OSTI)

represents natural gas combined cycle, PC Sub and PC Superintegrated gasi?cation combined cycle (IGCC) plants withand natural gas combined cycle (NGCC) with amine capture (

Newmark, Robin L.; Friedmann, Samuel J.; Carroll, Susan A.

2010-01-01T23:59:59.000Z

365

Nanoclay-Based Solid Sorbents for CO2 Capture  

Science Journals Connector (OSTI)

Nanoclay-Based Solid Sorbents for CO2 Capture ... As seen from the figure, the untreated nanoclay shows very little CO2 capture, while amine-treated nanoclays show considerably higher CO2 capture capacities, demonstrating the effectiveness of the amine treatment. ... The CO2 sorption capacity increases as the temperature is increased from 50 to 85 °C, and it reaches as high as 7.5% at 85 °C for the nanoclay treated with both APTMS and PEI, although the nanoclays treated with either APTMS or PEI show about 6% CO2 capture capacity. ...

Elliot A. Roth; Sushant Agarwal; Rakesh K. Gupta

2013-03-19T23:59:59.000Z

366

Low-energy proton capture reactions  

SciTech Connect

An overview of experimental problems in measuring the cross sections for (p,?) and (p,n) reactions at low energies is given with a specific emphasis on electron screening in metallic targets. Thick target ?-ray and neutron yields are compared for Ni and NiO targets, V and VO{sub 2} targets and Mn and MnO targets. The {sup 1}H({sup 7}Li,?){sup 4}He reaction was studied in inverse kinematics with hydrogen loaded into Pd and PdAg alloy foils from gas phase. Based on these results, a new approach to electron screening in nuclear reactions is suggested.

Lipoglavsek, M.; Cvetinovic, A.; Gajevic, J.; Likar, A.; Vavpetic, P. [Jozef Stefan Institute, Jamova ulica 39, Ljubljana (Slovenia); Petrovic, T. [Jozef Stefan Institute, Jamova ulica 39, Ljubljana, Slovenia and Cosylab d.d., Teslova ulica 30, Ljubljana (Slovenia)

2014-05-09T23:59:59.000Z

367

Most people are familiar with the effect of a camera, of capturing an instant in time  

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

Ultrashort Flashes of X-rays and Electrons at SLAC Ultrashort Flashes of X-rays and Electrons at SLAC Fig. 1. (top) Time-resolved diffracted in- tensity for both (111) (top) and (220) (bottom) reflections. Red curves are Gaussian fits to the data, corresponding to 10-90 % fall times of 430 fs and 280 fs respectively. (inset) Fluence dependence of (111) time constant. Since the development of the laser researchers have been using it as a stroboscopic tool to observe how the world works. Research and development efforts leading towards the Linac Coherent Light Source (LCLS) free-electron laser have facilitated the construction of a new accelerator-based femtosecond x-ray source, the Sub- Picosecond Pulse Source (SPPS) which extends our ability to capture transient phenomena at atomic-scale resolution. In order to produce femtosecond x-ray

368

A novel antibody based capture matrix utilizing human serum albumin and streptococcal Protein G to increase capture efficiency of bacteria.  

E-Print Network (OSTI)

??A novel capture matrix utilizing human serum albumin (HSA) and streptococcal Protein G (PG), which possesses an albumin binding domain (ABD), was used to immobilize… (more)

McCabe, Christie Renee

2009-01-01T23:59:59.000Z

369

THEMIS Observations of the Magnetopause Electron Diffusion Region: Large Amplitude Waves and Heated Electrons  

E-Print Network (OSTI)

We present the first observations of large amplitude waves in a well-defined electron diffusion region at the sub-solar magnetopause using data from one THEMIS satellite. These waves identified as whistler mode waves, electrostatic solitary waves, lower hybrid waves and electrostatic electron cyclotron waves, are observed in the same 12-sec waveform capture and in association with signatures of active magnetic reconnection. The large amplitude waves in the electron diffusion region are coincident with abrupt increases in electron parallel temperature suggesting strong wave heating. The whistler mode waves which are at the electron scale and enable us to probe electron dynamics in the diffusion region were analyzed in detail. The energetic electrons (~30 keV) within the electron diffusion region have anisotropic distributions with T_{e\\perp}/T_{e\\parallel}>1 that may provide the free energy for the whistler mode waves. The energetic anisotropic electrons may be produced during the reconnection process. The whi...

Tang, Xiangwei; Dombeck, John; Dai, Lei; Wilson, Lynn B; Breneman, Aaron; Hupach, Adam

2013-01-01T23:59:59.000Z

370

Boron thermal/epithermal neutron capture therapy  

SciTech Connect

The development of various particle beams for radiotherapy represents an attempt to improve dose distribution, and to provide high LET radiations which are less sensitive to ambient physical and radiobiological factors such as oxygen tension, cell cycle, and dose rate. In general, a compromise is necessary as effective RBE is reduced in order to spread the dose distribution over the anticipated tumor volume. The approach of delivering stable non-toxic isotopes to tumor, and then activating these atoms subsequently via an external radiation beam has mator advantages; problems associated with high uptake of these isotopes in competing cell pools are obviated, and the general tumor volume can be included in the treatment field of the activating beam. As long as the normal tissues supporting tumor show a low uptake of the isotope to be activated, and as long as the range of the reaction products is short, dose will be restricted to tumor, with a consequent high therapeutic ratio. Neutron Capture Therapy (NCT) is generally carried out by activating boron-10 with low energy neutrons. The range of the high LET, low OER particles from the /sup 10/B(n, ..cap alpha..)/sup 7/Li reaction is approx. 10..mu.., or one cell diameter, a situation that is optimal for cell killing. Significant advantages may be gained by using the NCT procedure in conjunction with improved tissue penetration provided with epithermal or filtered beams, and new compounds showing physiological binding to tumor.

Fairchild, R.G.

1982-01-01T23:59:59.000Z

371

Oxygen supply for oxyfuel CO2 capture  

Science Journals Connector (OSTI)

This paper presents the results of a study to develop Air Products’ air separation unit (ASU) offerings for oxyfuel coal CO2 capture projects. A scalable “reference plant” concept is described to match particular sizes of power generation equipment, taking into account factors such as safety, reliability, operating flexibility, efficiency, and low capital cost. We describe the selection of a process cycle to exploit the low purity requirements, as well as the options for compression machinery and drivers as the scale of the plant increases and the sizes of referenced equipment limit the possibilities. We also explore integration with other elements of the system, such as preheating condensate or heating and expanding pressurised nitrogen. In addition, we consider how the ASU affects the flexibility of the oxyfuel system and discuss how its power consumption can be reduced during periods of high power demand. Finally, the advantages and disadvantages of different execution strategies for air separation unit projects are discussed, as well as alternative commercial models for the supply of oxygen.

Paul Higginbotham; Vince White; Kevin Fogash; Galip Guvelioglu

2011-01-01T23:59:59.000Z

372

Resonance capture cross section of 207Pb  

E-Print Network (OSTI)

The radiative neutron capture cross section of 207Pb has been measured at the CERN neutron time of flight installation n_TOF using the pulse height weighting technique in the resolved energy region. The measurement has been performed with an optimized setup of two C6D6 scintillation detectors, which allowed us to reduce scattered neutron backgrounds down to a negligible level. Resonance parameters and radiative kernels have been determined for 16 resonances by means of an R-matrix analysis in the neutron energy range from 3 keV to 320 keV. Good agreement with previous measurements was found at low neutron energies, whereas substantial discrepancies appear beyond 45 keV. With the present results, we obtain an s-process contribution of 77(8)% to the solar abundance of 207Pb. This corresponds to an r-process component of 23(8)%, which is important for deriving the U/Th ages of metal poor halo stars.

C. Domingo-Pardo

2006-10-26T23:59:59.000Z

373

Articulated Body Motion Capture by Annealed Particle Filtering Jonathan Deutscher  

E-Print Network (OSTI)

with today's powerful off-the-shelf PC's, cost-effective and real- time markerless human motion capture has articulated body motion efficiently. 1. Introduction Marker-based human motion capture has been used commer be used on footage taken especially for that purpose. A markerless system of human motion cap- ture could

Oxford, University of

374

CO2 Capture by Absorption with Potassium Carbonate  

E-Print Network (OSTI)

CO2 Capture by Absorption with Potassium Carbonate Fourth Quarterly Report 2006 Quarterly Progress of this work is to improve the process for CO2 capture by alkanolamine absorption/stripping by developing% in the order: thiosulfatecarbonate is ineffective in the absence of oxygen

Rochelle, Gary T.

375

CO2 Capture by Absorption with Potassium Carbonate  

E-Print Network (OSTI)

CO2 Capture by Absorption with Potassium Carbonate Second Quarterly Report 2006 Quarterly Progress of this work is to improve the process for CO2 capture by alkanolamine absorption/stripping by developing for simultaneous removal of CO2 and SO2. Corrosion of carbon steel in uninhibited MEA solution is increased

Rochelle, Gary T.

376

CO2 Capture by Absorption with Potassium Carbonate  

E-Print Network (OSTI)

CO2 Capture by Absorption with Potassium Carbonate First Quarterly Report 2007 Quarterly Progress of this work is to improve the process for CO2 capture by alkanolamine absorption/stripping by developing% to 160% in the order: thiosulfatecarbonate is ineffective

Rochelle, Gary T.

377

CO2 Capture by Absorption with Potassium Carbonate  

E-Print Network (OSTI)

CO2 Capture by Absorption with Potassium Carbonate Third Quarterly Report 2006 Quarterly Progress of this work is to improve the process for CO2 capture by alkanolamine absorption/stripping by developing by Jou and Mather. Corrosion of carbon steel without inhibitors increases from 19 to 181 mpy in lean

Rochelle, Gary T.

378

Optimization of Power-Intensive Energy Systems with Carbon Capture  

Science Journals Connector (OSTI)

Optimization of Power-Intensive Energy Systems with Carbon Capture ... Three concepts for capturing CO2 from natural gas-fired combined gas/steam turbine power plants are evaluated and compared in this paper: (A) sepn. of CO2 from exhaust gas coming from a std. ...

Xuesong Zheng; Jin-Kuk Kim

2011-09-07T23:59:59.000Z

379

22 carbon capture journal -March -April 2008 Transport and Storage  

E-Print Network (OSTI)

22 carbon capture journal - March - April 2008 Transport and Storage Transport and storage research. In the proposed plant, 85 per cent of the carbon dioxide from the coal gasification process will be captured Ohio - $1m carbon sequestration study www.reviewonline.com $1m of US Federal government funds are be

380

Nuclear excitation energy in muon capture: A reply  

Science Journals Connector (OSTI)

The parametrization of total muon capture rates in terms of a mean nuclear excitation energy E¯?, recently proposed by Christillin, Dellafiore, and Rosa-Clot, is reexamined in view of recent criticisms. The previously obtained results are reconfirmed.NUCLEAR REACTIONS ?-+A(N, Z)??+A(N+1, Z-1); muon capture; closure approximation; mean nuclear excitation energies.

P. Christillin, A. Dellafiore, and M. Rosa-Clot

1975-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "milliseconds electron capture" 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

Mountaineer Commerical Scale Carbon Capture and Storage (CCS) Project  

SciTech Connect

The Final Technical documents all work performed during the award period on the Mountaineer Commercial Scale Carbon Capture & Storage project. This report presents the findings and conclusions produced as a consequence of this work. As identified in the Cooperative Agreement DE-FE0002673, AEP's objective of the Mountaineer Commercial Scale Carbon Capture and Storage (MT CCS II) project is to design, build and operate a commercial scale carbon capture and storage (CCS) system capable of treating a nominal 235 MWe slip stream of flue gas from the outlet duct of the Flue Gas Desulfurization (FGD) system at AEP's Mountaineer Power Plant (Mountaineer Plant), a 1300 MWe coal-fired generating station in New Haven, WV. The CCS system is designed to capture 90% of the CO{sub 2} from the incoming flue gas using the Alstom Chilled Ammonia Process (CAP) and compress, transport, inject and store 1.5 million tonnes per year of the captured CO{sub 2} in deep saline reservoirs. Specific Project Objectives include: (1) Achieve a minimum of 90% carbon capture efficiency during steady-state operations; (2) Demonstrate progress toward capture and storage at less than a 35% increase in cost of electricity (COE); (3) Store CO{sub 2} at a rate of 1.5 million tonnes per year in deep saline reservoirs; and (4) Demonstrate commercial technology readiness of the integrated CO{sub 2} capture and storage system.

Deanna Gilliland; Matthew Usher

2011-12-31T23:59:59.000Z

382

Boron Neutron Capture Therapy of a Murine Melanoma  

Science Journals Connector (OSTI)

...research-article Basic Sciences Boron Neutron Capture Therapy of a Murine Melanoma 1...for reprints should be addressed. Boron neutron capture therapy has been carried out on...Irradiations with a predominantly thermal neutron beam were performed at the Brookhaven...

Jeffrey A. Coderre; John A. Kalef-Ezra; Ralph G. Fairchild; Peggy L. Micca; Lawrence E. Reinstein; John D. Glass

1988-11-15T23:59:59.000Z

383

Neutron capture cross sections: from theory to experiments and back  

E-Print Network (OSTI)

The method for an experimental determination of the stellar enhancement factor for the cross section of the $^{151}$Sm$(n,\\gamma)$ reaction process is proposed. This study offered the pretext for an excursus on the interconnections between capture and dissociation reactions and the interplay between theory and experiments in the determination of neutron capture cross sections.

Alberto Mengoni

2005-01-31T23:59:59.000Z

384

Mobility and cooperation to thwart node capture attacks in MANETs  

Science Journals Connector (OSTI)

The nature of mobile ad hoc networks (MANETs), often unattended, makes this type of networks subject to some unique security issues. In particular, one of the most vexing problem for MANETs security is the node capture attack: an adversary can capture ...

Mauro Conti; Roberto Di Pietro; Luigi V. Mancini; Alessandro Mei

2009-02-01T23:59:59.000Z

385

OVERVIEW OF A MUON CAPTURE SECTION FOR MUON ACCELARATORS*  

E-Print Network (OSTI)

OVERVIEW OF A MUON CAPTURE SECTION FOR MUON ACCELARATORS* Diktys Stratakis# , J. Scott Berg, H Snopok, Illinois Institute of Technology, Chicago, IL, USA Abstract We describe a muon capture section to manipulate the longitudinal and transverse phase-space to collect efficiently a muon beam produced from

McDonald, Kirk

386

Chronicle: Capture, Exploration, and Playback of Document Workflow Histories  

E-Print Network (OSTI)

Chronicle: Capture, Exploration, and Playback of Document Workflow Histories Tovi Grossman, Justin ABSTRACT We describe Chronicle, a new system that allows users to explore document workflow histories. Chronicle captures the entire video history of a graphical document, and provides links between the content

Toronto, University of

387

Natural Gas Combined Cycle Power Plant Integrated to Capture Plant  

Science Journals Connector (OSTI)

Natural Gas Combined Cycle Power Plant Integrated to Capture Plant ... A natural gas combined cycle (NGCC) power plant with capacity of about 430 MW integrated to a chemical solvent absorber/stripping capture plant is investigated. ... The natural gas combined cycle (NGCC) is an advanced power generation technology that improves the fuel efficiency of natural gas. ...

Mehdi Karimi; Magne Hillestad; Hallvard F. Svendsen

2012-01-19T23:59:59.000Z

388

Dynamic rich-data capture and analysis of debugging processes  

E-Print Network (OSTI)

Dynamic rich-data capture and analysis of debugging processes Pablo Romero, Benedict du Boulay and debugging through the capture and analysis of rich process data. A software debugging environment that comprises comprehension of the program, troubleshooting ability and knowledge of the computerised working

Romero, Pablo

389

Department of Energy Announces $67 Million Investment for Carbon Capture  

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

Department of Energy Announces $67 Million Investment for Carbon Department of Energy Announces $67 Million Investment for Carbon Capture Development Department of Energy Announces $67 Million Investment for Carbon Capture Development July 7, 2010 - 12:00am Addthis WASHINGTON, D.C. - The US Department of Energy announced today the selection of ten projects aimed at developing advanced technologies for capturing carbon dioxide (CO2) from coal combustion. The projects, valued at up to $67 million over three years, focus on reducing the energy and efficiency penalties associated with applying currently available carbon capture and storage (CCS) technologies to existing and new power plants. The selections announced today will focus on improving efficiency and reducing the added costs to electricity at power plants with carbon capture

390

Biomimetric Membrane for CO2 Capture from Flue Gas  

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

Biomimetic memBrane for co Biomimetic memBrane for co 2 capture from flue Gas Background Carbon Capture and Sequestration (CCS) is a three-step process including capture, pipeline transport and geologic storage of which the capture of carbon dioxide (CO 2 ) is the most costly and technically challenging. Current available methods impose significant energy burdens that severely impact their overall effectiveness as a significant deployment option. Of the available capture technologies for post combustion applications - absorption, adsorption, reaction and membranes chemically facilitated absorption promises to be the most cost-effective membrane solution for post combustion application. The Carbozyme technology extracts CO 2 from low concentration, low pressure sources by means of chemical facilitation of a polymer membrane. The chemical

391

Secretary Chu Announces Carbon Capture and Storage Simulation Initiative |  

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

Carbon Capture and Storage Simulation Carbon Capture and Storage Simulation Initiative Secretary Chu Announces Carbon Capture and Storage Simulation Initiative September 8, 2010 - 12:00am Addthis Washington, DC -U.S. Secretary of Energy Steven Chu announced today the creation of the Carbon Capture and Storage Simulation Initiative with an investment of up to $40 million from the American Recovery and Reinvestment Act. The partnership announced today will bring together national laboratories and regional university alliances to collaborate on advancing the science and research related to carbon capture and storage (CCS). The information gained through the partnership will further the Department's effort to develop lower cost, efficient industrial CCS processes. The collaboration also builds upon the Administration's goal to overcome the

392

Secretary Chu Announces Carbon Capture and Storage Simulation Initiative |  

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

Carbon Capture and Storage Simulation Carbon Capture and Storage Simulation Initiative Secretary Chu Announces Carbon Capture and Storage Simulation Initiative September 8, 2010 - 1:00pm Addthis Washington, DC - U.S. Secretary of Energy Steven Chu announced today the creation of the Carbon Capture and Storage Simulation Initiative with an investment of up to $40 million from the American Recovery and Reinvestment Act. The partnership announced today will bring together national laboratories and regional university alliances to collaborate on advancing the science and research related to carbon capture and storage (CCS). The information gained through this partnership will further the Department's effort to develop lower cost, efficient industrial CCS processes. The partnership also builds upon the Administration's goal to overcome the

393

Discussion on Carbon Capture and Sequestration Legislation | Department of  

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

Discussion on Carbon Capture and Sequestration Legislation Discussion on Carbon Capture and Sequestration Legislation Discussion on Carbon Capture and Sequestration Legislation April 20, 2010 - 3:45pm Addthis Statement of Dr. James Markowsky, Assistant Secretary for Fossil Energy before the Senate Committee on Energy and Natural Resources on Carbon Capture and Sequestration Legislation, S. 1856, S. 1134, and other Draft Legislative Text. Thank you Mr. Chairman and members of the Committee. I appreciate this opportunity to meet with you this morning to discuss carbon capture and storage (CCS) legislation before the Committee. While this hearing is focused specifically on S. 1856, a bill to amend the Energy Policy Act of 2005 to clarify policies regarding ownership of pore space, introduced by Sen. John Barrasso (R-WY); S.1134, the Responsible Use

394

Knowledge Capture and Transfer Program | Department of Energy  

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

Performance-Based Culture » Performance-Based Culture » Knowledge Capture and Transfer Program Knowledge Capture and Transfer Program The Office of Learning and Workforce Development is working with Heads of Departmental Elements, DOE senior leaders and subject-matter-experts to capture and transfer the knowledge and experiences of its current employees, through the Knowledge Capture and Transfer Program. This program is initiating immediate action to stem the potential loss of critical knowledge and skills possessed by older, retirement eligible employees. Recognizing adverse economic conditions and dwindling budgets, the DOE will utilize cost-effective methods, including leveraging the highly technical and diverse expertise within the Department, to help address its knowledge capture and transfer challenges.

395

National Carbon Capture Center Launches Post-Combustion Test Center |  

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

Carbon Capture Center Launches Post-Combustion Test Center Carbon Capture Center Launches Post-Combustion Test Center National Carbon Capture Center Launches Post-Combustion Test Center June 6, 2011 - 2:32pm Addthis Jenny Hakun What does this mean for me? Commercial deployment of the processes tested here could cut carbon pollution. Innovation is important to finding ways to make energy cleaner. And testing the ideas and processes that researchers come up with is critical to moving ideas from the lab to the marketplace. That's why the Department of Energy recently commissioned an Alabama testing facility that will help move research forward and speed up deployment of innovative post-combustion carbon dioxide (CO2) capture technologies for coal-based power plants. The Post-Combustion Carbon Capture Center (or PC4) facility tests new

396

Carbon Capture, Transport and Storage Regulatory Test Exercise: Output  

Open Energy Info (EERE)

Carbon Capture, Transport and Storage Regulatory Test Exercise: Output Carbon Capture, Transport and Storage Regulatory Test Exercise: Output Report Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Carbon Capture, Transport and Storage Regulatory Test Exercise: Output Report Focus Area: Clean Fossil Energy Topics: Market Analysis Website: cdn.globalccsinstitute.com/sites/default/files/publications/7326/carbo Equivalent URI: cleanenergysolutions.org/content/carbon-capture-transport-and-storage- Policies: Regulations Regulations: Emissions Mitigation Scheme The Scottish Government published this report to identify regulatory gaps or overlaps in the nation's framework for regulating carbon capture and storage (CCS). The report aims to streamline and better manage CCS regulation. It focuses on evaluating the risks, barriers, information gaps,

397

Pre-Combustion Carbon Capture Research | Department of Energy  

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

Pre-Combustion Carbon Capture Research Pre-Combustion Carbon Capture Research Pre-Combustion Carbon Capture Research Pre-combustion capture refers to removing CO2 from fossil fuels before combustion is completed. For example, in gasification processes a feedstock (such as coal) is partially oxidized in steam and oxygen/air under high temperature and pressure to form synthesis gas. This synthesis gas, or syngas, is a mixture of hydrogen, carbon monoxide, CO2, and smaller amounts of other gaseous components, such as methane. The syngas can then undergo the water-gas shift reaction to convert CO and water (H2O) to H2 and CO2, producing a H2 and CO2-rich gas mixture. The concentration of CO2 in this mixture can range from 15-50%. The CO2 can then be captured and separated, transported, and ultimately sequestered, and the H2-rich fuel combusted.

398

Large-Scale Industrial Carbon Capture, Storage Plant Begins Construction |  

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

Large-Scale Industrial Carbon Capture, Storage Plant Begins Large-Scale Industrial Carbon Capture, Storage Plant Begins Construction Large-Scale Industrial Carbon Capture, Storage Plant Begins Construction August 24, 2011 - 1:00pm Addthis Washington, DC - Construction activities have begun at an Illinois ethanol plant that will demonstrate carbon capture and storage. The project, sponsored by the U.S. Department of Energy's Office of Fossil Energy, is the first large-scale integrated carbon capture and storage (CCS) demonstration project funded by the American Recovery and Reinvestment Act (ARRA) to move into the construction phase. Led by the Archer Daniels Midland Company (ADM), a member of DOE's Midwest Geological Sequestration Consortium, the Illinois-ICCS project is designed to sequester approximately 2,500 metric tons of carbon dioxide

399

NETL: 2009 Conference Proceedings - Carbon Capture 2020 Workshop  

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

Carbon Capture 2020 Workshop Carbon Capture 2020 Workshop October 5-6, 2009 Table of Contents Disclaimer Presentations PRESENTATIONS Workshop Summary [PDF-1.2MB] Opening Comments and Overview Presentations on Ongoing FE and BES Carbon Capture Research Dr. James J. Markowsky - Assistant Secretary, Office Fossil Energy, U.S. Department of Energy Dr. William F. Brinkman - Director, Office of Science, U.S. Department of Energy FE Program for Carbon Capture [PDF-1.3MB] Jared Ciferno - National Energy Technology Laboratory, U.S. Department of Energy NETL Research Activities [PDF-1.6MB] Geo Richards - National Energy Technology Laboratory, U.S. Department of Energy BES Research on Carbon Capture [PDF-570KB] Mary Galvin - Office of Basic Energy Sciences, U.S. Department of Energy Overview of EFRC [PDF-1.5MB]

400

FE Carbon Capture and Storage News | Department of Energy  

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

Carbon Capture and Storage News Carbon Capture and Storage News FE Carbon Capture and Storage News RSS November 7, 2013 Energy Department Invests to Drive Down Costs of Carbon Capture, Support Reductions in Greenhouse Gas Pollution 18 Innovative Carbon Capture Projects Will Help Make Fossil Energy Use Cleaner, Safer and More Sustainable as Part of the Obama Administration's Climate Action Plan August 15, 2013 Historically Black Colleges and Universities Receive Funds for Fossil Energy Research Five fossil energy-related projects that will help maintain the nation's energy portfolio while also providing educational and research training opportunities for tomorrow's scientists and engineers have been selected for funding by the U.S. Department of Energy (DOE). August 14, 2013 DOE Selects Ten Projects to Conduct Advanced Turbine Technology Research

Note: This page contains sample records for the topic "milliseconds electron capture" 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

NETL: Gasification - National Carbon Capture Center at the Power Systems  

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

Gasification Gasification National Carbon Capture Center at the Power Systems Development Facility National Carbon Capture Center Participants The Power Systems Development Facility (PSDF) is a state-of-the-art test center sponsored by the U.S. Department of Energy (DOE) and dedicated to the advancement of clean coal technology. The PSDF now houses the National Carbon Capture Center (NCCC) to address the nation's need for cost-effective, commercially viable CO2 capture options for flue gas from pulverized coal power plants and syngas from coal gasification power plants. The NCCC focuses national efforts on reducing greenhouse gas emissions through technological innovation, and serve as a neutral test center for emerging carbon capture technologies. PSDF-NCCC Background

402

Capturing Process Knowledge for Facility Deactivation and Decommissioning |  

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

Capturing Process Knowledge for Facility Deactivation and Capturing Process Knowledge for Facility Deactivation and Decommissioning Capturing Process Knowledge for Facility Deactivation and Decommissioning The Office of Environmental Management (EM) is responsible for the disposition of a vast number of facilities at numerous sites around the country which have been declared excess to current mission needs. Capturing Process Knowledge for Facility Deactivation and Decommissioning More Documents & Publications Capturing Process Knowledge for Facility Deactivation and Decommissioning Deactivation & Decommissioning Knowledge Management Information Tool (D&D KM-IT) Above on the left is K-25, at Oak Ridge before and after the 844,000 sq-ft demolition. In addition, on the right: K Cooling Tower at Savannah River Site demolition.

403

Breakthrough Large-Scale Industrial Project Begins Carbon Capture and  

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

Breakthrough Large-Scale Industrial Project Begins Carbon Capture Breakthrough Large-Scale Industrial Project Begins Carbon Capture and Utilization Breakthrough Large-Scale Industrial Project Begins Carbon Capture and Utilization January 25, 2013 - 12:00pm Addthis Washington, DC - A breakthrough carbon capture, utilization, and storage (CCUS) project in Texas has begun capturing carbon dioxide (CO2) and piping it to an oilfield for use in enhanced oil recovery (EOR). Read the project factsheet The project at Air Products and Chemicals hydrogen production facility in Port Arthur, Texas, is significant for demonstrating both the effectiveness and commercial viability of CCUS technology as an option in helping mitigate atmospheric CO2 emissions. Funded in part through the American Recovery and Reinvestment Act (ARRA), the project is managed by the U.S.

404

Large-Scale Industrial Carbon Capture, Storage Plant Begins Construction |  

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

Large-Scale Industrial Carbon Capture, Storage Plant Begins Large-Scale Industrial Carbon Capture, Storage Plant Begins Construction Large-Scale Industrial Carbon Capture, Storage Plant Begins Construction August 24, 2011 - 1:00pm Addthis Washington, DC - Construction activities have begun at an Illinois ethanol plant that will demonstrate carbon capture and storage. The project, sponsored by the U.S. Department of Energy's Office of Fossil Energy, is the first large-scale integrated carbon capture and storage (CCS) demonstration project funded by the American Recovery and Reinvestment Act (ARRA) to move into the construction phase. Led by the Archer Daniels Midland Company (ADM), a member of DOE's Midwest Geological Sequestration Consortium, the Illinois-ICCS project is designed to sequester approximately 2,500 metric tons of carbon dioxide

405

Breakthrough Large-Scale Industrial Project Begins Carbon Capture and  

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

Breakthrough Large-Scale Industrial Project Begins Carbon Capture Breakthrough Large-Scale Industrial Project Begins Carbon Capture and Utilization Breakthrough Large-Scale Industrial Project Begins Carbon Capture and Utilization January 25, 2013 - 12:00pm Addthis Washington, DC - A breakthrough carbon capture, utilization, and storage (CCUS) project in Texas has begun capturing carbon dioxide (CO2) and piping it to an oilfield for use in enhanced oil recovery (EOR). Read the project factsheet The project at Air Products and Chemicals hydrogen production facility in Port Arthur, Texas, is significant for demonstrating both the effectiveness and commercial viability of CCUS technology as an option in helping mitigate atmospheric CO2 emissions. Funded in part through the American Recovery and Reinvestment Act (ARRA), the project is managed by the U.S.

406

Membrane-based carbon capture from flue gas: A review  

Science Journals Connector (OSTI)

Abstract There has been an increasing interest in the application of membranes to flue gas separation, primarily driven by the need of carbon capture for significantly reducing greenhouse gas emissions. Historically, there has not been general consensus about the advantage of membranes against other methods such as liquid solvents for carbon capture. However, recent research indicates that advances in materials and process designs could significantly improve the separation performance of membrane capture systems, which make membrane technology competitive with other technologies for carbon capture. This paper mainly reviews membrane separation for the application to post-combustion CO2 capture with a focus on the developments and breakthroughs in membrane material design, process engineering, and engineering economics.

Rajab Khalilpour; Kathryn Mumford; Haibo Zhai; Ali Abbas; Geoff Stevens; Edward S. Rubin

2014-01-01T23:59:59.000Z

407

Sub-barrier capture with quantum diffusion approach  

E-Print Network (OSTI)

With the quantum diffusion approach the behavior of capture cross sections and mean-square angular momenta of captured systems are revealed in the reactions with deformed and spherical nuclei at sub-barrier energies. With decreasing bombarding energy under the barrier the external turning point of the nucleus-nucleus potential leaves the region of short-range nuclear interaction and action of friction. Because of this change of the regime of interaction, an unexpected enhancement of the capture cross section is found at bombarding energies far below the Coulomb barrier. This effect is shown its worth in the dependence of mean-square angular momentum on the bombarding energy. From the comparison of calculated capture cross sections and experimental capture or fusion cross sections the importance of quasifission near the entrance channel is demonstrated for the actinidebased reactions and reactions with medium-heavy nuclei at extreme sub-barrier energies.

V. V. Sargsyan; R. A. Kuzyakin; G. G. Adamian; N. V. Antonenko; W. Scheid; H. Q. Zhang

2011-08-05T23:59:59.000Z

408

Light radioactive nuclei capture reactions with phenomenological potential models  

E-Print Network (OSTI)

Light radioactive nuclei play an important role in many astrophysical environments. Due to very low cross sections of some neutron and proton capture reactions by these radioactive nuclei at energies of astrophysical interest, direct laboratory measurements are very difficult. For radioactive nuclei such as 8Li and 8B, the direct measurement of neutron capture reactions is impossible. Indirect methods have been applied to overcome these difficulties. In this work we will report on the results and discussion of phenomenological potential models used to determine some proton and neutron capture reactions. As a test we show the results for the 16O(p,g)17F_gs(5/2+) and 16O(p,g)17F_ex(1/2+) capture reactions.We also computed the nucleosynthesis cross sections for the 7Li(n,g)8Li, 8Li(n,g)9Li and 8B(p,g)9C capture reactions.

V. Guimaraes; C. A. Bertulani

2009-12-01T23:59:59.000Z

409

Neutron capture of 26Mg at thermonuclear energies  

E-Print Network (OSTI)

The neutron capture cross section of 26Mg was measured relative to the known gold cross section at thermonuclear energies using the fast cyclic activation technique. The experiment was performed at the 3.75 MV Van-de-Graaff accelerator, Forschungszentrum Karlsruhe. The experimental capture cross section is the sum of resonant and direct contributions. For the resonance at E(n,lab) = 220 keV our new results are in disagreement with the data from Weigmann et al. An improved Maxwellian averaged capture cross section is derived from the new experimental data taking into account s- and p-wave capture and resonant contributions. The properties of so-called potential resonances which influence the p-wave neutron capture of 26}Mg are discussed in detail.

P. Mohr; H. Beer; H. Oberhummer; G. Staudt

1998-05-20T23:59:59.000Z

410

FE Carbon Capture and Storage News | Department of Energy  

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

Carbon Capture and Storage News Carbon Capture and Storage News FE Carbon Capture and Storage News RSS June 9, 2010 Award-Winning DOE Technology Scores Success in Carbon Storage Project The ability to detect and track the movement of carbon dioxide in underground geologic storage reservoirs -- an important component of carbon capture and storage technology -- has been successfully demonstrated at a U.S. Department of Energy New Mexico test site. April 20, 2010 Research Experience in Carbon Sequestration 2010 Now Accepting Applications Students and early career professionals can gain hands-on experience in areas related to carbon capture and storage by participating in the Research Experience in Carbon Sequestration program. March 15, 2010 Illinois CO2 Injection Project Moves Another Step Forward

411

Department of Energy Announces $67 Million Investment for Carbon Capture  

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

Announces $67 Million Investment for Carbon Announces $67 Million Investment for Carbon Capture Development Department of Energy Announces $67 Million Investment for Carbon Capture Development July 7, 2010 - 12:00am Addthis WASHINGTON, D.C. - The US Department of Energy announced today the selection of ten projects aimed at developing advanced technologies for capturing carbon dioxide (CO2) from coal combustion. The projects, valued at up to $67 million over three years, focus on reducing the energy and efficiency penalties associated with applying currently available carbon capture and storage (CCS) technologies to existing and new power plants. The selections announced today will focus on improving efficiency and reducing the added costs to electricity at power plants with carbon capture systems to less than 30 percent for a new pulverized coal plant and 10

412

Discussion on Carbon Capture and Sequestration Legislation | Department of  

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

Discussion on Carbon Capture and Sequestration Legislation Discussion on Carbon Capture and Sequestration Legislation Discussion on Carbon Capture and Sequestration Legislation April 20, 2010 - 3:45pm Addthis Statement of Dr. James Markowsky, Assistant Secretary for Fossil Energy before the Senate Committee on Energy and Natural Resources on Carbon Capture and Sequestration Legislation, S. 1856, S. 1134, and other Draft Legislative Text. Thank you Mr. Chairman and members of the Committee. I appreciate this opportunity to meet with you this morning to discuss carbon capture and storage (CCS) legislation before the Committee. While this hearing is focused specifically on S. 1856, a bill to amend the Energy Policy Act of 2005 to clarify policies regarding ownership of pore space, introduced by Sen. John Barrasso (R-WY); S.1134, the Responsible Use

413

Carbon Dioxide Capture and Storage Demonstration in Developing Countries:  

Open Energy Info (EERE)

Carbon Dioxide Capture and Storage Demonstration in Developing Countries: Carbon Dioxide Capture and Storage Demonstration in Developing Countries: Analysis of Key Policy Issues and Barriers Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Carbon Dioxide Capture and Storage Demonstration in Developing Countries: Analysis of Key Policy Issues and Barriers Focus Area: Clean Fossil Energy Topics: Potentials & Scenarios Website: cdn.globalccsinstitute.com/sites/default/files/publications/15536/carb Equivalent URI: cleanenergysolutions.org/content/carbon-dioxide-capture-and-storage-de Policies: "Deployment Programs,Financial Incentives" is not in the list of possible values (Deployment Programs, Financial Incentives, Regulations) for this property. DeploymentPrograms: Technical Assistance This report discusses the value of carbon capture and storage (CCS)

414

INFRARED OBSERVATIONS OF THE MILLISECOND PULSAR BINARY J1023+0038: EVIDENCE FOR THE SHORT-TERM NATURE OF ITS INTERACTING PHASE IN 2000-2001  

SciTech Connect

We report our multi-band infrared (IR) imaging of the transitional millisecond pulsar system J1023+0038, a rare pulsar binary known to have an accretion disk in 2000-2001. The observations were carried out with ground-based and space telescopes from near-IR to far-IR wavelengths. We detected the source in near-IR JH bands and Spitzer 3.6 and 4.5 {mu}m mid-IR channels. Combined with the previously reported optical spectrum of the source, the IR emission is found to arise from the companion star, with no excess emission detected in the wavelength range. Because our near-IR fluxes are nearly equal to those obtained by the 2MASS all-sky survey in 2000 February, the result indicates that the binary did not contain the accretion disk at the time, whose existence would have raised the near-IR fluxes to twice larger values. Our observations have thus established the short-term nature of the interacting phase seen in 2000-2001: the accretion disk existed for at most 2.5 yr. The binary was not detected by the WISE all-sky survey carried out in 2010 at its 12 and 22 {mu}m bands and our Herschel far-IR imaging at 70 and 160 {mu}m. Depending on the assumed properties of the dust, the resulting flux upper limits provide a constraint of <3 Multiplication-Sign 10{sup 22}-3 Multiplication-Sign 10{sup 25} g on the mass of the dust grains that possibly exist as the remnants of the previously seen accretion disk.

Wang, Xuebing; Wang, Zhongxiang [Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030 (China)] [Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030 (China); Morrell, Nidia [Las Campanas Observatory, Observatories of the Carnegie Institution of Washington, La Serena (Chile)] [Las Campanas Observatory, Observatories of the Carnegie Institution of Washington, La Serena (Chile)

2013-02-20T23:59:59.000Z

415

Face-based multiple instance analysis for smart electronics billboard  

Science Journals Connector (OSTI)

This paper introduces a visual-based system, which can count the number of viewers and recognize their gender in front of an electronic billboard in real-time video streams. The viewers actually watching an advertisement are captured via frontal face ... Keywords: Electronic billboard, Gender recognition, Viewer counting

Duan-Yu Chen; Kuan-Yi Lin

2012-07-01T23:59:59.000Z

416

CAPTURE OF PLANETESIMALS BY GAS DRAG FROM CIRCUMPLANETARY DISKS  

SciTech Connect

Growing giant planets have circumplanetary disks around them in the late stage of their formation if their mass is sufficiently large. We examine capture of relatively large planetesimals that are decoupled from the gas inflow, due to gas drag from a circumplanetary disk of a growing giant planet. Assuming that the structure of the circumplanetary disk is axisymmetric, and solving the three-body problem including gas drag, we perform analytic and numerical calculations for capture of planetesimals. When planetesimal random velocity is small, planetesimals approaching in the retrograde direction are more easily captured, owing to their larger velocity relative to the gas. Planetesimals with large orbital inclinations interact with the disk for a short period of time and show lower capture rates. The effect of ablation on capture rates seems insignificant, although mass loss due to ablation would be significant in the case of high random velocity. We also examine the effect of non-uniform radial distribution of planetesimals in the protoplanetary disk due to gap opening by the planet. When the random velocity of planetesimals is small, the planetesimal capture rate decreases rapidly as the half width of the gap in the planetesimal disk increases from two planetary Hill radii to three planetary Hill radii; planetesimals with low random velocities cannot approach the planet in the case of a sufficiently wide gap. Our results show that the radial distribution and random velocity of planetesimals in the protoplanetary disk are essentially important for the understanding of capture of planetesimals by circumplanetary disks.

Fujita, Tetsuya; Ohtsuki, Keiji; Suetsugu, Ryo [Department of Earth and Planetary Sciences, Kobe University, Kobe 657-8501 (Japan); Tanigawa, Takayuki [Institute of Low Temperature Science, Hokkaido University, Sapporo 060-0819 (Japan)

2013-12-01T23:59:59.000Z

417

Neutron Capture Gamma-Ray Libraries for Nuclear Applications  

SciTech Connect

The neutron capture reaction is useful in identifying and analyzing the gamma-ray spectrum from an unknown assembly as it gives unambiguous information on its composition. this can be done passively or actively where an external neutron source is used to probe an unknown assembly. There are known capture gamma-ray data gaps in the ENDF libraries used by transport codes for various nuclear applications. The Evaluated Gamma-ray Activation file (EGAF) is a new thermal neutron capture database of discrete line spectra and cross sections for over 260 isotopes that was developed as part of an IAEA Coordinated Research project. EGAF is being used to improve the capture gamma production in ENDF libraries. For medium to heavy nuclei the quasi continuum contribution to the gamma cascades is not experimentally resolved. The continuum contains up to 90% of all the decay energy and is modeled here with the statistical nuclear structure code DICEBOX. This code also provides a consistency check of the level scheme nuclear structure evaluation. The calculated continuum is of sufficient accuracy to include in the ENDF libraries. This analysis also determines new total thermal capture cross sections and provides an improved RIPL database. For higher energy neutron capture there is less experimental data available making benchmarking of the modeling codes more difficult. They are investigating the capture spectra from higher energy neutrons experimentally using surrogate reactions and modeling this with Hauser-Feshbach codes. This can then be used to benchmark CASINO, a version of DICEBOX modified for neutron capture at higher energy. This can be used to simulate spectra from neutron capture at incident neutron energies up to 20 MeV to improve the gamma-ray spectrum in neutron data libraries used for transport modeling of unknown assemblies.

Sleaford, B W; Firestone, R B; Summers, N; Escher, J; Hurst, A; Krticka, M; Basunia, S; Molnar, G; Belgya, T; Revay, Z; Choi, H D

2010-11-04T23:59:59.000Z

418

Greening Coal: Breakthroughs and Challenges in Carbon Capture and Storage  

Science Journals Connector (OSTI)

(1) This plan requires that globally, billions of tonnes of carbon dioxide (GtCO2) each year must be captured, concentrated, and stored to keep it out of the atmosphere for hundreds to thousands of years. ... Ciferno, J. P.; Fout, T. E.; Jones, A. P.; Murphy, J. T.Capturing carbon from existing coal-fired power plants Chem. ... Nelson, T.; Coleman, L.; Anderson, M.; Herr, J.; Pavani, M.The dry carbonate process: Carbon dioxide recovery from power plant flue gas, In CO2 Capture Technology for Existing Plants, NETL R&D Meeting, Pittsburgh, PA, 2009. ...

Philip H. Stauffer; Gordon N. Keating; Richard S. Middleton; Hari S. Viswanathan; Kathryn A. Berchtold; Rajinder P. Singh; Rajesh J. Pawar; Anthony Mancino

2011-09-09T23:59:59.000Z

419

Stochastic analysis of well capture zones in heterogeneous porous media  

SciTech Connect

In this study we present a moment-equation-based approach to derive the time-dependent mean capture zones and their associated uncertainties. The flow statistics are obtained by solving the first two moments of flow, and the mean capture zones are determined by reversely tracking the non-reactive particles released at a small circle around each pumping well. The uncertainty associated with the mean capture zones is calculated based on the particle displacement covariance for nonstationary flow fields. For comparison purpose, we also conducted Monte Carlo simulations. It has been found that our model results are in good agreement with Monte Carlo results.

Zhang, D. (Dongxiao); Lu, Z. (Zhiming)

2002-01-01T23:59:59.000Z

420

It's Elemental - Isotopes of the Element Copper  

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

Nickel Nickel Previous Element (Nickel) The Periodic Table of Elements Next Element (Zinc) Zinc Isotopes of the Element Copper [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Mass Number Natural Abundance Half-life 63 69.15% STABLE 65 30.85% STABLE Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 52 No Data Available Proton Emission No Data Available 53 < 300 nanoseconds Electron Capture No Data Available Proton Emission No Data Available 54 < 75 nanoseconds Proton Emission No Data Available 55 27 milliseconds Electron Capture 100.00% Electron Capture with delayed Proton Emission 15.0% 56 93 milliseconds Electron Capture 100.00%

Note: This page contains sample records for the topic "milliseconds electron capture" 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

Electron Microscopy Center  

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

CM30T TEM CM30T TEM Instrument capabilities: Instrument specifications: Accelerating voltages: 100-300 kV LaB6 emitter Resolution (at 300 kV): ~ 0.25 nm point; ~ 0.14 nm line Minimum probe size: ~ 9 nm Operating modes: CTEM, CBED, SAED, light element XEDS CCD camera: 1 Mp, 14 bits, AVI capture possible at 15 fps Specimen holders: Double Tilt (+/- 60 degrees alpha, +/- 30 degrees beta): with Be cup for XEDS liquid nitrogen cooled (96 K) with Be cup heating (1270 K) Tilt/rotate (+/- 60 degrees alpha, rotation 360 degrees) Single Tilt (+/- 60 degrees alpha) Typical experiments (examples): Quantitative XEDS Morphological and diffraction contrast studies of defects In situ heating & cooling studies Electron crystallography Weak beam studies of defects This page can be downloaded here as an Adobe PDF file.

422

DOE Approves Field Test for Promising Carbon Capture Technology |  

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

Approves Field Test for Promising Carbon Capture Technology Approves Field Test for Promising Carbon Capture Technology DOE Approves Field Test for Promising Carbon Capture Technology November 20, 2012 - 12:00pm Addthis Washington, DC - A promising post combustion membrane technology that can separate and capture 90 percent of the carbon dioxide (CO2) from a pulverized coal plant has been successfully demonstrated and received Department of Energy (DOE) approval to advance to a larger-scale field test. In an $18.75 million project funded by the American Recovery and Reinvestment Act of 2009, Membrane Technology and Research Inc. (MTR) and its partners tested the Polaris™ membrane system, which uses a CO2-selective polymeric membrane (micro-porous films which act as semi-permeable barriers to separate two different mediums) material and

423

BERAC Subcommittee Report on Boron Neutron Capture Therapy (BNCT) Clinical  

Office of Science (SC) Website

BERAC Subcommittee Report on Boron Neutron Capture BERAC Subcommittee Report on Boron Neutron Capture Therapy (BNCT) Clinical Trials. Biological and Environmental Research Advisory Committee (BERAC) BERAC Home Meetings Members Charges/Reports Current BERAC Charges Archive of BERAC Reports Charter .pdf file (40KB) BER Committees of Visitors BER Home Charges/Reports BERAC Subcommittee Report on Boron Neutron Capture Therapy (BNCT) Clinical Trials. Print Text Size: A A A RSS Feeds FeedbackShare Page BERAC Subcommittee Report on Boron Neutron Capture Therapy (BNCT) Clinical Trials. In response to the charge letter from Dr. Martha Krebs, Office of Science, dated November 5, 1998. Committee members: Bijay Mukherji, M.D., Chair, University of Connecticut Health Sciences Center, Walter Curran, M.D., Thomas Jefferson University;

424

NETL: Gasification - National Carbon Capture Center at the Power Systems  

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

Gasifier Optimization Main Area Gasifier Optimization Main Area National Carbon Capture Center at the Power Systems Development Facility Southern Company Services, Inc. Project Number: FE0000749 Project Description The objective of this project is to develop technologies under realistic conditions that will reduce the cost of advanced coal-fueled power plants with CO2 capture. This technology development will include the design, procurement, construction, installation, and operation of a flexible facility for the testing of processes for pre-combustion CO2 capture, post-combustion CO2 capture and oxy-combustion. Components and systems that are appropriate for inclusion in the detailed test plan will be identified in collaboration with NETL. In addition to evaluating DOE sponsored projects; projects from industry, universities, and Electric Power Research Institute (EPRI) will be evaluated to assist in accomplishing the project objectives.

425

Energy Department Advances Carbon Capture and Storage Research on Two  

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

Carbon Capture and Storage Research on Carbon Capture and Storage Research on Two Fronts Energy Department Advances Carbon Capture and Storage Research on Two Fronts September 16, 2009 - 1:00pm Addthis Washington, DC - Forty-three research projects that will advance carbon capture and storage (CCS) technologies while providing graduate and undergraduate student training opportunities at universities across the country will be supported by $12.7 million in U.S. Department of Energy funding announced today. View Project Details Spread over three years, the regional sequestration training projects and funding will be managed by the Office of Fossil Energy's National Energy Technology Laboratory. The projects are funded through the 2009 American Reinvestment and Recovery Act and are aimed at the broad objectives of

426

National Energy Technology Laboratory Captures Three Sustainability Awards  

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

National Energy Technology Laboratory Captures Three Sustainability National Energy Technology Laboratory Captures Three Sustainability Awards National Energy Technology Laboratory Captures Three Sustainability Awards September 27, 2012 - 1:00pm Addthis Washington, DC - When the U.S. Department of Energy (DOE) called on employees to meet sustainability goals by initiating environmental, energy, and economic improvements, the Office of Fossil Energy's National Energy Technology Laboratory (NETL) answered the call--and captured three Departmental Sustainability Awards for its efforts. The DOE Sustainability Awards program, now in its second year, "recognizes the achievements of DOE employees whose leadership and cost-reducing initiatives have saved taxpayer money by reducing the Department's use of energy, water, and paper while improving the energy efficiency of Federal

427

Regenerable Immobilized Aminosilane Sorbents for Carbon Dioxide Capture  

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

Immobilized Aminosilane Sorbents Immobilized Aminosilane Sorbents for Carbon Dioxide Capture Opportunity Research is currently active on the patent-pending technology titled "Regenerable Immobilized Aminosilane Sorbents for Carbon Dioxide Capture." The technology is available for licensing and/or further collaborative research from the U.S. Department of Energy's National Energy Technology Laboratory. Overview Carbon sequestration entails a multi-step process in which CO 2 is first separated / captured from gas streams followed by permanent storage. Carbon capture represents a critical step in the process and accounts for a considerable portion of the overall cost. Newly developed, high capacity amine-based sorbents offer many advantages over existing technology including increased CO

428

NETL: Low-Pressure Membrane Contactors for CO2 Capture  

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

Low-Pressure Membrane Contactors for CO2 Capture Low-Pressure Membrane Contactors for CO2 Capture Project No.: DE-FE0007553 Membrane Technology and Research, Inc. (MTR) is developing a new type of membrane contactor (or mega-module) to separate carbon dioxide (CO2) from power plant flue gas. This module's membrane area is 500 square meters, 20 to 25 times larger than that of current modules used for CO2 capture. A 500-MWe coal power plant requires 0.5 to 1 million square meters of membrane to achieve 90 percent CO2 capture. The new mega-modules can drastically reduce the cost, complexity, and footprint of commercial-scale membrane module integration. Energy savings due to low-pressure drops for gases circulated through the modules, as well as improved countercurrent flow, are additional benefits. The feasibility of using mega-modules in several different hybrid process designs is being evaluated for future development potential.

429

New Recovery Act Funding Boosts Industrial Carbon Capture and Storage  

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

Recovery Act Funding Boosts Industrial Carbon Capture and Recovery Act Funding Boosts Industrial Carbon Capture and Storage Research and Development New Recovery Act Funding Boosts Industrial Carbon Capture and Storage Research and Development September 7, 2010 - 1:00pm Addthis Washington, DC - U.S. Energy Secretary Steven Chu today announced the selection of 22 projects that will accelerate carbon capture and storage research and development for industrial sources. Funded with more than $575 million from the American Recovery and Reinvestment Act, these R&D projects complement the industrial demonstration projects already being funded through the Recovery Act. Together, these projects represent an unprecedented investment in the development of clean coal technologies. This program supports the President's goal to overcome the barriers to

430

DOE Science Showcase - Carbon Capture research in DOE Databases | OSTI,  

Office of Scientific and Technical Information (OSTI)

DOE Science Showcase - Carbon Capture research in DOE Databases DOE Science Showcase - Carbon Capture research in DOE Databases Information Bridge : Natural materials for carbon capture. ... Realistic costs of carbon capture ... Technology and international climate policy Energy Citations Database : What Can China Do? China's Best Alternative Outcome for Energy Efficiency and CO2 Emissions ... Effects of warming on the structure and function of a boreal black spruce forest ... ScienceCinema : Carbon Smackdown ... Extrapolate the Past or Invent the Future ... Two Billion Cars: What it means for Climate and Energy Policy ... DOE Data Explorer : Big Sky Carbon Atlas... NATCARB Interactive Maps ... Videos of experiments from ORNL's Gas Hydrate Research DOE Green Energy : Thinking Like a Whole Building: A Whole Foods Market New Construction Case

431

New Recovery Act Funding Boosts Industrial Carbon Capture and Storage  

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

Recovery Act Funding Boosts Industrial Carbon Capture and Recovery Act Funding Boosts Industrial Carbon Capture and Storage Research and Development New Recovery Act Funding Boosts Industrial Carbon Capture and Storage Research and Development September 7, 2010 - 12:00am Addthis Washington, D.C. - U.S. Energy Secretary Steven Chu today announced the selection of 22 projects that will accelerate carbon capture and storage research and development for industrial sources. Funded with more than $575 million from the American Recovery and Reinvestment Act, these R&D projects complement the industrial demonstration projects already being funded through the Recovery Act. Together, these projects represent an unprecedented investment in the development of clean coal technologies. This program supports the President's goal of overcoming the barriers to

432

Carbon Capture and Storage from Industrial Sources | Department of Energy  

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

Carbon Carbon Capture and Storage from Industrial Sources Carbon Capture and Storage from Industrial Sources In 2009, the industrial sector accounted for slightly more than one-quarter of total U.S. carbon dioxide (CO2) emissions of 5,405 million metric tons from energy consumption, according to data from DOE's Energy Information Administration. In a major step forward in the fight to reduce CO2 emissions from industrial plants, DOE has allocated Recovery Act funds to more than 25 projects that capture and sequester CO2 emissions from industrial sources - such as cement plants, chemical plants, refineries, paper mills, and manufacturing facilities - into underground formations. Large-Scale Projects Three projects are aimed at testing large-scale industrial carbon capture

433

Secretary Chu Announces $3 Billion Investment for Carbon Capture and  

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

3 Billion Investment for Carbon Capture 3 Billion Investment for Carbon Capture and Sequestration Secretary Chu Announces $3 Billion Investment for Carbon Capture and Sequestration December 4, 2009 - 12:00am Addthis Washington, DC - US Energy Secretary Steven Chu announced today the selection of three new projects with a value of $3.18 billion to accelerate the development of advanced coal technologies with carbon capture and storage at commercial-scale. Secretary Chu made today's announcement on a conference call with Governor Joe Manchin, Senator Jay Rockefeller, and President of American Electric Power Company, Inc., Mike Morris. These projects will help to enable commercial deployment to ensure the United States has clean, reliable, and affordable electricity and power. An investment of up to $979 million, including funds from the American

434

DOE-Supported Project Advances Clean Coal, Carbon Capture Technology |  

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

DOE-Supported Project Advances Clean Coal, Carbon Capture DOE-Supported Project Advances Clean Coal, Carbon Capture Technology DOE-Supported Project Advances Clean Coal, Carbon Capture Technology January 29, 2013 - 12:00pm Addthis Washington, DC - Researchers at The Ohio State University (OSU) have successfully completed more than 200 hours of continuous operation of their patented Coal-Direct Chemical Looping (CDCL) technology - a one-step process to produce both electric power and high-purity carbon dioxide (CO2). The test, led by OSU Professor Liang-Shih Fan, represents the longest integrated operation of chemical looping technology anywhere in the world to date. The test was conducted at OSU's 25 kilowatt thermal (kWt) CDCL combustion sub-pilot unit under the auspices of DOE's Carbon Capture Program, which is developing innovative environmental control technologies to foster the

435

Secretary Chu Announces $3 Billion Investment for Carbon Capture and  

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

3 Billion Investment for Carbon Capture 3 Billion Investment for Carbon Capture and Sequestration Secretary Chu Announces $3 Billion Investment for Carbon Capture and Sequestration December 4, 2009 - 12:00pm Addthis Washington, DC - U.S. Energy Secretary Steven Chu announced today the selection of three new projects with a value of $3.18 billion to accelerate the development of advanced coal technologies with carbon capture and storage at commercial-scale. Secretary Chu made today's announcement on a conference call with West Virginia Governor Joe Manchin, Senator Jay Rockefeller, and President of American Electric Power Company, Inc., Mike Morris. These projects will help to enable commercial deployment to ensure the United States has clean, reliable, and affordable electricity and power. An investment of up to $979 million, including funds from the

436

DOE-Supported Project Advances Clean Coal, Carbon Capture Technology |  

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

DOE-Supported Project Advances Clean Coal, Carbon Capture DOE-Supported Project Advances Clean Coal, Carbon Capture Technology DOE-Supported Project Advances Clean Coal, Carbon Capture Technology January 29, 2013 - 12:00pm Addthis Washington, DC - Researchers at The Ohio State University (OSU) have successfully completed more than 200 hours of continuous operation of their patented Coal-Direct Chemical Looping (CDCL) technology - a one-step process to produce both electric power and high-purity carbon dioxide (CO2). The test, led by OSU Professor Liang-Shih Fan, represents the longest integrated operation of chemical looping technology anywhere in the world to date. The test was conducted at OSU's 25 kilowatt thermal (kWt) CDCL combustion sub-pilot unit under the auspices of DOE's Carbon Capture Program, which is developing innovative environmental control technologies to foster the

437

Fossil Energy Research Efforts in Carbon Capture and Storage | Department  

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

Fossil Energy Research Efforts in Carbon Capture and Storage Fossil Energy Research Efforts in Carbon Capture and Storage Fossil Energy Research Efforts in Carbon Capture and Storage May 14, 2009 - 1:54pm Addthis Statement of Dr. Victor K. Der, Acting Assistant Secretary, Office of Fossil Energy before the Energy and Natural Resources Committee, United States Senate. Thank you, Mr. Chairman and members of the Committee. I appreciate this opportunity to provide testimony on the United States Department of Energy's (DOE's) research efforts in carbon capture and storage. The Department of Energy has not had an opportunity to fully analyze S. 1013, and therefore, cannot take a position on the bill at this time. Introduction Fossil fuel resources represent a tremendous national asset. An abundance of fossil fuels in North America has contributed to our Nation's economic

438

Energy Department Advances Carbon Capture and Storage Research on Two  

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

Energy Department Advances Carbon Capture and Storage Research on Energy Department Advances Carbon Capture and Storage Research on Two Fronts Energy Department Advances Carbon Capture and Storage Research on Two Fronts September 16, 2009 - 1:00pm Addthis Washington, DC - Forty-three research projects that will advance carbon capture and storage (CCS) technologies while providing graduate and undergraduate student training opportunities at universities across the country will be supported by $12.7 million in U.S. Department of Energy funding announced today. View Project Details Spread over three years, the regional sequestration training projects and funding will be managed by the Office of Fossil Energy's National Energy Technology Laboratory. The projects are funded through the 2009 American Reinvestment and Recovery Act and are aimed at the broad objectives of

439

Breakthrough Industrial Carbon Capture, Utilization and Storage Project  

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

Breakthrough Industrial Carbon Capture, Utilization and Storage Breakthrough Industrial Carbon Capture, Utilization and Storage Project Begins Full-Scale Operations Breakthrough Industrial Carbon Capture, Utilization and Storage Project Begins Full-Scale Operations May 10, 2013 - 11:36am Addthis NEWS MEDIA CONTACT (202) 586-4940 WASHINGTON - The Energy Department's Acting Assistant Secretary for Fossil Energy Christopher Smith today attended a dedication ceremony at the Air Products and Chemicals hydrogen production facilities in Port Arthur, Texas. Supported by a $284 million Energy Department investment, the company has successfully begun capturing carbon dioxide from industrial operations and is now using that carbon for enhanced oil recovery (EOR) and securely storing it underground. This first-of-a-kind, breakthrough project

440

Carbon Dioxide Capture in Metal-Organic Frameworks | Center for...  

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

Carbon Dioxide Capture in Metal-Organic Frameworks Previous Next List Kenji Sumida , David L. Rogow , Jarad A. Mason , Thomas M. McDonald , Eric D. Bloch , Zoey R. Herm , Tae-Hyun...

Note: This page contains sample records for the topic "milliseconds electron capture" 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

A versatile metal-organic framework for carbon dioxide capture...  

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

versatile metal-organic framework for carbon dioxide capture and cooperative catalysis Previous Next List Jinhee Park, Jian-Rong Li, Ying-Pin Chen, Jiamei Yu, Andrey A. Yakovenko,...

442

A hybrid absorption-adsorption method to efficiently capture...  

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

hybrid absorption-adsorption method to efficiently capture carbon Previous Next List Huang Liu, Bei Liu, Li-Chiang Lin, Guangjin Chen, Yuqing Wu, Jin Wang, Xueteng Gao, Yining Lv,...

443

Carbon dioxide capture under ambient conditions using 2-chloroethylamine  

Science Journals Connector (OSTI)

This is the first case applying 2-haloethylamine to CO2 capture. The prospect of global warming and the urgent need to reduce atmospheric concentration of carbon dioxide has prompted actions at many levels. The c...

Junhua Wang; Xiqin Zhang; Yun Zhou

2011-12-01T23:59:59.000Z

444

In silico screening of carbon-capture materials | Center for...  

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

In silico screening of carbon-capture materials Previous Next List L.-C. Lin, A. H. Berger, R. L. Martin, J. Kim, J. A. Swisher, K. Jariwala, C. H. Rycroft, A. S. Bhown, M. W....

445

Carbon Capture and a Commercial Market for CO2  

Science Journals Connector (OSTI)

With increasing evidence that the earth is warming at a faster rate than previously expected, there is pressure to reduce carbon dioxide (CO2) emissions on a large scale. Because carbon capture helps to internali...

Thomas R. Sadler

2013-05-01T23:59:59.000Z

446

Carbon capture and storage deployment rates: needs and feasibility  

Science Journals Connector (OSTI)

Carbon capture and storage (CCS) may become a ... , an important question is the scale of carbon dioxide abatement we require from CCS to ... to ‘fill the gap’ between scenarios’ carbon dioxide emissions levels a...

Asbjørn Torvanger; Marianne T. Lund…

2013-02-01T23:59:59.000Z

447

Sustainability in Carbon Capture and Utilization. Biodiesel from Microalgae  

Science Journals Connector (OSTI)

Biodiesel from microalgae is one of the most promising options of carbon capture and utilization (CCU) because of the...-2 day-1, lipid content at 40–45 %, water and nutrient recycle, favourable climate condition...

E. N. D’Addario

2013-01-01T23:59:59.000Z

448

Carbon Capture and Storage Experiences Limited Growth in 2011  

Science Journals Connector (OSTI)

Funding for large-scale carbon capture and storage (CCS) projects remained relatively...1 (See Figure 1.) Overall, the number of active and planned largescale CCS projects declined in 2011, although the total ope...

Matt Lucky

2013-01-01T23:59:59.000Z

449

Carbon dioxide capture-related gas adsorption and separation...  

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

Carbon dioxide capture-related gas adsorption and separation in metal-organic frameworks Previous Next List Jian-Rong Li, Yuguang Ma, M. Colin McCarthy, Julian Sculley, Jiamei Yu,...

450

Optimal strategy for carbon capture and storage infrastructure: A review  

Science Journals Connector (OSTI)

To effectively reduce CO2, CO2...mitigation technologies should be employed tactically. This paper focuses on carbon capture and storage (CCS) as the most...2 reduction technology and investigates how to establis...

Jee-Hoon Han; Yu-Chan Ahn; Jae-Uk Lee…

2012-08-01T23:59:59.000Z

451

Carbon Dioxide Capture: Prospects for New Materials | Center...  

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

Carbon Dioxide Capture: Prospects for New Materials Previous Next List D. M. D'Alessandro, B. Smit, and J. R. Long, Angew. Chem.-Int. Edit. 49 (35), 6058 (2010) DOI: 10.1002...

452

Halogenated sulfidohydroboranes for nuclear medicine and boron neutron capture therapy  

DOE Patents (OSTI)

A method for performing boron neutron capture therapy for the treatment of tumors is disclosed. The method includes administering to a patient an iodinated sulfidohydroborane, a boron-10-containing compound. The site of the tumor is localized by visualizing the increased concentration of the iodine labelled compound at the tumor. The targeted tumor is then irradiated with a beam of neutrons having an energy distribution effective for neutron capture. Destruction of the tumor occurs due to high LET particle irradiation of the tissue secondary to the incident neutrons being captured by the boron-10 nuclei. Iodinated sulfidohydroboranes are disclosed which are especially suitable for the method of the invention. In a preferred embodiment, a compound having the formula Na.sub.4 B.sub.12 I.sub.11 SSB.sub.12 I.sub.11, or another pharmaceutically acceptable salt of the compound, may be administered to a cancer patient for boron neutron capture therapy.

Miura, Michiko (Hampton Bays, NY); Slatkin, Daniel N. (Southold, NY)

1997-03-18T23:59:59.000Z

453

Halogenated sulfidohydroboranes for nuclear medicine and boron neutron capture therapy  

DOE Patents (OSTI)

A method for performing boron neutron capture therapy for the treatment of tumors is disclosed. The method includes administering to a patient an iodinated sulfidohydroborane, a boron-10-containing compound. The site of the tumor is localized by visualizing the increased concentration of the iodine labelled compound at the tumor. The targeted tumor is then irradiated with a beam of neutrons having an energy distribution effective for neutron capture. Destruction of the tumor occurs due to high LET particle irradiation of the tissue secondary to the incident neutrons being captured by the boron-10 nuclei. Iodinated sulfidohydroboranes are disclosed which are especially suitable for the method of the invention. In a preferred embodiment, a compound having the formula Na{sub 4}B{sub 12}I{sub 11}SSB{sub 12}I{sub 11}, or another pharmaceutically acceptable salt of the compound, may be administered to a cancer patient for boron neutron capture therapy. 1 fig.

Miura, M.; Slatkin, D.N.

1997-03-18T23:59:59.000Z

454

Halogenated sulfidohydroboranes for nuclear medicine and boron neutron capture therapy  

DOE Patents (OSTI)

A method for performing boron neutron capture therapy for the treatment of tumors is disclosed. The method includes administering to a patient an iodinated sulfidohydroborane, a boron-10-containing compound. The site of the tumor is localized by visualizing the increased concentration of the iodine labelled compound at the tumor. The targeted tumor is then irradiated with a beam of neutrons having an energy distribution effective for neutron capture. Destruction of the tumor occurs due to high LET particle irradiation of the tissue secondary to the incident neutrons being captured by the boron-10 nuclei. Iodinated sulfidohydroboranes are disclosed which are especially suitable for the method of the invention. In a preferred embodiment, a compound having the formula Na.sub.4 B.sub.12 I.sub.11 SSB.sub.12 I.sub.11, or another pharmaceutically acceptable salt of the compound, may be administered to a cancer patient for boron neutron capture therapy.

Miura, Michiko (Hampton Bays, NY); Slatkin, Daniel N. (Southold, NY)

1995-10-03T23:59:59.000Z

455

Halogenated sulfidohydroboranes for nuclear medicine and boron neutron capture therapy  

DOE Patents (OSTI)

A method for performing boron neutron capture therapy for the treatment of tumors is disclosed. The method includes administering to a patient an iodinated sulfidohydroborane, a boron-10-containing compound. The site of the tumor is localized by visualizing the increased concentration of the iodine labelled compound at the tumor. The targeted tumor is then irradiated with a beam of neutrons having an energy distribution effective for neutron capture. Destruction of the tumor occurs due to high LET particle irradiation of the tissue secondary to the incident neutrons being captured by the boron-10 nuclei. Iodinated sulfidohydroboranes are disclosed which are especially suitable for the method of the invention. In a preferred embodiment, a compound having the formula Na{sub 4}B{sub 12}I{sub 11}SSB{sub 12}I{sub 11}, or another pharmaceutically acceptable salt of the compound, may be administered to a cancer patient for boron neutron capture therapy. 1 fig.

Miura, M.; Slatkin, D.N.

1997-08-05T23:59:59.000Z

456

Halogenated sulfidohydroboranes for nuclear medicine and boron neutron capture therapy  

DOE Patents (OSTI)

A method for performing boron neutron capture therapy for the treatment of tumors is disclosed. The method includes administering to a patient an iodinated sulfidohydroborane, a boron-10-containing compound. The site of the tumor is localized. by visualizing the increased concentration of the iodine labelled compound at the tumor. The targeted tumor is then irradiated with a beam of neutrons having an energy distribution effective for neutron capture. Destruction of the tumor occurs due to high LET particle irradiation of the tissue secondary to the incident neutrons being captured by the boron-10 nuclei. Iodinated sulfidohydroboranes are disclosed which are especially suitable for the method of the invention. In a preferred embodiment, a compound having the formula Na.sub.4 B.sub.12 I.sub.11 SSB.sub.12 I.sub.11, or another pharmaceutically acceptable salt of the compound, may be administered to a cancer patient for boron neutron capture therapy.

Miura, Michiko (Hampton Bays, NY); Slatkin, Daniel N. (Southold, NY)

1997-08-05T23:59:59.000Z

457

Fluid mechanics of bubble capture by the diving bell spider  

E-Print Network (OSTI)

The water spider, a unique member of its species, is used as inspiration for a bubble capture mechanism. Bubble mechanics are studied in the pursuit of a biomimetic solution for transporting air bubbles underwater. Careful ...

Brooks, Alice (Alice P.)

2010-01-01T23:59:59.000Z

458

Sensitivity studies for the weak r process: neutron capture rates  

SciTech Connect

Rapid neutron capture nucleosynthesis involves thousands of nuclear species far from stability, whose nuclear properties need to be understood in order to accurately predict nucleosynthetic outcomes. Recently sensitivity studies have provided a deeper understanding of how the r process proceeds and have identified pieces of nuclear data of interest for further experimental or theoretical study. A key result of these studies has been to point out the importance of individual neutron capture rates in setting the final r-process abundance pattern for a ‘main’ (A ? 130 peak and above) r process. Here we examine neutron capture in the context of a ‘weak’ r process that forms primarily the A ? 80 r-process abundance peak. We identify the astrophysical conditions required to produce this peak region through weak r-processing and point out the neutron capture rates that most strongly influence the final abundance pattern.

Surman, R., E-mail: surmanr@union.edu [Department of Physics and Astronomy, Union College, Schenectady, NY 12308 (United States); Mumpower, M. [Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States)] [Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States); Sinclair, R.; Jones, K. L. [Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996 (United States)] [Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996 (United States); Hix, W. R. [Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996 (United States) [Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996 (United States); Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States); McLaughlin, G. C. [Department of Physics, North Carolina State University, Raleigh, NC 27695 (United States)] [Department of Physics, North Carolina State University, Raleigh, NC 27695 (United States)

2014-04-15T23:59:59.000Z

459

Enhancing Amine-Supported Materials for Ambient Air Capture ...  

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

Enhancing Amine-Supported Materials for Ambient Air Capture Previous Next List Julian P. Sculley, Hong-Cai Zhou, Angew. Chem. Int. Ed., 51, 12660-12661 (2012) DOI: 10.1002...

460

Functional Mesoporous Metal-Organic Frameworks for the Capture...  

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

Functional Mesoporous Metal-Organic Frameworks for the Capture of Heavy Metal Ions and Size-Selective Catalysis Previous Next List Qian-Rong Fang, Da-Qian Yuan, Julian Sculley,...

Note: This page contains sample records for the topic "milliseconds electron capture" 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

Radiobiology of normal rat lung in Boron Neutron Capture Therapy  

E-Print Network (OSTI)

Boron Neutron Capture Therapy (BNCT) is a binary cancer radiation therapy that utilizes biochemical tumor cell targeting and provides a mixed field of high and low Linear Energy Transfer (LET) radiation with differing ...

Kiger, Jingli Liu

2006-01-01T23:59:59.000Z

462

Ownership of Carbon Dioxide Captured by Clean Coal Project (Texas)  

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

This legislation stipulates that the Railroad Commission of Texas automatically acquires the title to any carbon dioxide captured by a clean coal project in the state. The Bureau of Economic...

463

Low-energy capture of asteroids onto KAM tori  

E-Print Network (OSTI)

We present a new method for engineering the artificial capture of asteroids. Based on theories of the chaos-assisted capture of natural satellites of the giant planets, we show how an unbound asteroid that passes close to a regular region of phase space can be easily moved onto the nearby KAM tori and essentially permanently captured with the Earth's Hill sphere without closing the zero velocity curves. The method has the advantages of a relatively low delta-v requirement and no need for control strategies. An illustration of the method is given for an example asteroid trajectory, demonstrating that it is a viable strategy for the final capture stage of asteroids in the Earth's neighbourhood.

Verrier, Patricia E

2015-01-01T23:59:59.000Z

464

CO? compression for capture-enabled power systems  

E-Print Network (OSTI)

The objective of this thesis is to evaluate a new carbon dioxide compression technology - shock compression - applied specifically to capture-enabled power plants. Global warming has increased public interest in carbon ...

Suri, Rajat

2009-01-01T23:59:59.000Z

465

Capturing Energy Efficiency Upgrades in the Real Estate Transaction  

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

"Capturing Energy Efficiency Upgrades in the Real Estate Transaction," by Residential Energy Efficiency Solutions, July 10, 2012. Describes the concept of a residential MPG number as a simple way of describing a home’s energy consumption.

466

Boron neutron capture therapy of primary and metastatic brain tumors  

Science Journals Connector (OSTI)

Boron neutron capture therapy (BNCT) is based on the nuclear reaction that occurs when a stable isotope, boron-10, is irradiated with low energy (0....n th) to yield alpha (4He) particles and,7Li ...

Rolf F. Barth; Albert H. Soloway

467

Hypoxia-selective compounds for boron neutron capture therapy  

E-Print Network (OSTI)

Boron neutron capture therapy (BNCT) is a biochemically targeted form of radiotherapy for cancer. In BNCT, a compound labeled with the stable isotope boron-10 is systemically administered, and tumor cells selectively uptake ...

Shah, Jungal (Jugal Kaushik)

2008-01-01T23:59:59.000Z

468

Perspectives on Carbon Capture and Sequestration in the United States  

E-Print Network (OSTI)

CA Coal oxy saline AL FL TX Coal Coal NG post post oxy EORvented EOR TBD Taylorville Antelope V TBD on hold Pilot CCScarbon capture steam-methane EOR saline EOR saline EOR IL LA

Wong-Parodi, Gabrielle

2011-01-01T23:59:59.000Z

469

Capturing the Sun, Creating a Clean Energy Future (Brochure)...  

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

energy solutions, visit www.energy.gov sunshot and www.solar.energy.gov. Capturing the Sun, Creating a Clean Energy Future Front photo by Dennis Schroeder, NRELPIX 19125; inside...

470

Capturing and Applying Lessons Learned During Engineering Equipment Installation  

Science Journals Connector (OSTI)

This paper describes the implementation of a knowledge management tool to capture and reuse the lessons learned from the installation of engineering equipment. It has been developed as an adjunct to an existin...

Ian Watson

2004-01-01T23:59:59.000Z

471

Capturing and Applying Lessons Learned During Engineering Equipment Installation  

Science Journals Connector (OSTI)

This paper describes the implementation of a knowledge management tool to capture and reuse the lessons learned from the installation of engineering equipment. It has been developed as an adjunct to an exist-i...

Ian Watson

2004-01-01T23:59:59.000Z

472

Computational aspects of treatment planning for neutron capture therapy  

E-Print Network (OSTI)

Boron Neutron Capture Therapy (BNCT) is a biochemically targeted form of binary radiation therapy that has the potential to deliver radiation to cancers with cellular dose selectivity. Accurate and efficient treatment ...

Albritton, James Raymond, 1977-

2010-01-01T23:59:59.000Z

473

Knowledge Capture and Transfer Program (KCTP) “Newly Created” Powerpedia Page  

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

The Knowledge Capture and Transfer Program (KCTP) has a new logo and a newly created Powerpedia page.  The page layout and program descriptions allow for quicker searches and easier access to...

474

Post-Combustion Carbon Capture Research | Department of Energy  

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

Post-Combustion Carbon Capture Research Post-Combustion Carbon Capture Research Post-Combustion Carbon Capture Research Fossil fuel fired electric generating plants are the cornerstone of America's central power system. Currently, the existing fossil fuel fleet accounts for about two-thirds of all electricity generated domestically, over 40% from coal alone. Electricity demand is expected to increase dramatically over the next 30 years, and adding new generating capacity typically requires long lead time. In the meantime, the United States will continue to rely on existing plants to provide a substantial amount of affordable electric power for years to come. Retrofitting the Existing Fleet of Power Plants There is vast potential for retrofitting carbon capture technologies to the existing fossil fuel fleet. In 2011, coal-fired power plants produced

475

High-Performance Sorbents for Carbon Dioxide Capture from Air  

SciTech Connect

This project has focused on capture of CO{sub 2} from ambient air (“air capture”). If this process is technically and economically feasible, it could potentially contribute to net reduction of CO{sub 2} emissions in ways that are complementary to better developed techniques for CO{sub 2} from concentrated point sources. We focused on cyclic adsorption processes for CO{sub 2} capture from air in which the entire cycle is performed at moderate temperatures. The project involved both experimental studies of sorbent materials and process level modeling of cyclic air capture processes. In our experimental work, a series of amine-functionalized silica adsorbents were prepared and characterized to determine the impact of molecular architecture on CO{sub 2} capture. Some key findings were: • Amine functionalized silicas can be prepared with high enough CO{sub 2} capacities under ambient conditions to merit consideration for use in air capture processes. • Primary amines are better candidates for CO{sub 2} capture than secondary or tertiary amines, both in terms of amine efficiency for CO{sub 2} adsorption and enhanced water affinity. • Mechanistic understanding of degradation of these materials can enable control of molecular architecture to significantly improve material stability. Our process modeling work provided the first publically available cost and energy estimates for cyclic adsorption processes for air capture of CO{sub 2}. Some key findings were: • Cycles based on diurnal ambient heating and cooling cannot yield useful purities or amounts of captured CO{sub 2}. • Cycles based on steam desorption at 110 oC can yield CO{sub 2} purities of ~88%. • The energy requirements for cycles using steam desorption are dominated by needs for thermal input, which results in lower costs than energy input in the form of electricity. Cyclic processes with operational costs of less than $100 tCO{sub 2}-net were described, and these results point to process and material improvements that could substantially reduce these costs. The most critical conclusions from our work are that (i) CO{sub 2} capture from ambient air using moderate temperature cyclic adsorption processes is technically feasible and (ii) the operational costs of realistic versions of these processes are moderate enough to encourage future development of this technology. Because of the very modest net investment that has been made in R&D associated with this approach from all sources worldwide (relative to the massive public and private investment that has been made in technologies for CO{sub 2} from concentrated point sources), our results strongly suggest that continued development of air capture is justified.

Sholl, David; Jones, Christopher

2013-03-13T23:59:59.000Z

476

Conceptual Design of Optimized Fossil Energy Systems with Capture and Sequestration of Carbon Dioxide  

E-Print Network (OSTI)

of Fossil Hydrogen Energy Systems with Carbon Capture andThe Implications Of New Carbon Capture And SequestrationW H SAMMIS WILLOW ISLAND TOTAL Carbon capture In the plant

Ogden, Joan

2004-01-01T23:59:59.000Z

477

Findings and Recommendations by the California Carbon Capture and Storage Review Panel  

E-Print Network (OSTI)

Findings and Recommendations by the California Carbon Capture and Storage Review Panel December............................................................................1 Creation of the Carbon Capture and Storage Review Panel...................................................................................................................................................6 The Role of Carbon Capture and Storage (CCS) in Meeting California's Climate Reduction Goals

478

CO2 Capture Membrane Process for Power Plant Flue Gas  

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

CO CO 2 Capture Membrane Process for Power Plant Flue Gas Background The U.S. Department of Energy's (DOE) Existing Plants, Emissions & Capture (EPEC) Program is performing research to develop advanced technologies focusing on carbon dioxide (CO 2 ) emissions control for existing pulverized coal-fired plants. This new focus on post-combustion and oxy-combustion CO 2 emissions control technology, CO 2 compression, and beneficial reuse is in response to the priority for advanced

479

Metal Monolithic Amine-Grafted Zeolites for CO2 Capture  

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

Metal Monolithic Amine-Grafted Metal Monolithic Amine-Grafted Zeolites for CO 2 Capture Background The mission of the U.S. Department of Energy's (DOE) Existing Plants, Emissions & Capture (EPEC) Research and Development (R&D) Program is to develop innovative environmental control technologies to enable full use of the nation's vast coal reserves, while allowing the current fleet of coal-fired power plants to comply with existing and emerging environmental regulations. The EPEC R&D Program portfolio

480

Radiative Neutron Capture on Carbon-14 in Effective Field Theory  

E-Print Network (OSTI)

The cross section for radiative capture of neutron on carbon-14 is calculated using the model-independent formalism of halo effective field theory. The dominant contribution from E1 transition is considered, and the cross section is expressed in terms of elastic scattering parameters of the effective range expansion. Contributions from both resonant and non-resonant interaction are calculated. Significant interference between these leads to a capture contribution that deviates from simple Breit-Wigner resonance form.

Gautam Rupak; Lakma Fernando; Akshay Vaghani

2012-04-19T23:59:59.000Z

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481

Radiative Neutron Capture on Carbon-14 in Effective Field Theory  

E-Print Network (OSTI)

The cross section for radiative capture of neutron on carbon-14 is calculated using the model-independent formalism of halo effective field theory. The dominant contribution from E1 transition is considered, and the cross section is expressed in terms of elastic scattering parameters of the effective range expansion. Contributions from both resonant and non-resonant interaction are calculated. Significant interference between these leads to a capture contribution that deviates from simple Breit-Wigner resonance form.

Rupak, Gautam; Vaghani, Akshay

2012-01-01T23:59:59.000Z

482

Using Detonation Nanodiamond for the Specific Capture of Glycoproteins  

Science Journals Connector (OSTI)

Using Detonation Nanodiamond for the Specific Capture of Glycoproteins ... We demonstrate here the functionalization of detonation nanodiamond (ND) with aminophenylboronic acid (APBA) for the purpose of targeting the selective capture of glycoproteins from unfractionated protein mixtures. ... (1-4) In addition, a gene expression study carried out has confirmed the innate biocompatibility of ND.(5) These results are exciting because ND can now be produced in ton quantities by a breakthrough in detonation synthesis, allowing the enabling of many engineering applications. ...

Weng Siang Yeap; Yee Ying Tan; Kian Ping Loh

2008-05-14T23:59:59.000Z

483

Recoilless Resonant Capture of Antineutrinos from Tritium Decay  

E-Print Network (OSTI)

Monoenergetic antineutrinos emitted in the bound state beta-decay of H can be resonantly captured in 3He. Favorable conditions are offered by tritide technology for ultra sharp recoilless resonant capture of the 18.6 keV nubare with sigma~5x10-32 cm2, 11 orders of magnitude larger than sigma(nubare +p). The gravitational red shift of neutrinos and the mixing angle theta13 may be measurable in bench scale baselines.

R. S. Raghavan

2006-09-13T23:59:59.000Z

484

Inexpensive passive samplers capture POPs data in developing countries  

Science Journals Connector (OSTI)

Passive air samplers are particularly suitable for capturing POPs data in developing countries because they can operate without electricity and are much less expensive than the high-volume samplers conventionally used to capture POPs data. ... The GAPS data in the ES&T paper are the first to present a “coherent ‘big picture’ of the atmospheric occurrence and distribution of POPs on a global scale,” says Knut Breivik with the Norwegian Institute for Air Research. ...

Kellyn Betts

2008-12-10T23:59:59.000Z

485

Better Enzymes for Carbon Capture: Low-Cost Biological Catalyst to Enable Efficient Carbon Dioxide Capture  

SciTech Connect

IMPACCT Project: Codexis is developing new and efficient forms of enzymes known as carbonic anhydrases to absorb CO2 more rapidly and under challenging conditions found in the gas exhaust of coal-fired power plants. Carbonic anhydrases are common and are among the fastest enzymes, but they are not robust enough to withstand the harsh environment found in the power plant exhaust steams. In this project, Codexis will be using proprietary technology to improve the enzymes’ ability to withstand high temperatures and large swings in chemical composition. The project aims to develop a carbon-capture process that uses less energy and less equipment than existing approaches. This would reduce the cost of retrofitting today’s coal-fired power plants.

None

2010-07-01T23:59:59.000Z

486

A Novel Framework for Carbon Capture, Utilization, and Sequestration, CCUS  

Science Journals Connector (OSTI)

Abstract Recent global warming and climate change are often attributed to anthropogenic CO2 emissions from burning and consumption of fossil fuels. CO2 capture, utilization and sequestration (CCUS) is an enabling technology toward reducing such emissions from stationary sources. However, significant challenges remain to be addressed before CCUS can be deployed at the industrial scale. A major challenge is to reduce the overall cost of CCUS. To this end, we apply a multi-scale approach and provide a comprehensive framework to elucidate materials-centric, process-centric and network-centric understanding toward reducing the overall CCUS cost. At the materials level, a hierarchical in silico screening method is developed to select the candidate adsorbent materials and optimize process conditions in tandem for adsorption-based postcombustion CO2 capture. At the process level, detailed cost-based modeling and optimization of different capture processes are performed, which enable us to develop explicit expressions for the investment and operating costs of capture technologies, and to determine the most cost-effective materials and processes to be used for CO2 capture and compression when addressing diverse emission scenarios. At the network level, we design an optimal nationwide CCUS structure that uses the most appropriate source plants, capture technologies and materials, transportation network, and CO2 utilization and storage sites. We also discuss the factors that affect the CCUS network costs.

M.M. Faruque Hasan; Eric L. First; Fani Boukouvala; Christodoulos A. Floudas

2014-01-01T23:59:59.000Z

487

On the efficiency of field star capture by star clusters  

E-Print Network (OSTI)

An exciting recent finding regarding scaling relations among globular clusters is the so-called 'blue tilt': clusters of the blue sub-population follow a trend of redder colour with increasing luminosity. In this paper we evaluate to which extent field star capture over a Hubble time may explain the 'blue tilt'. We perform collisional N-body simulations to quantify the amount of field star capture occuring over a Hubble time to star clusters with 10^3 to 10^6 stars. In the simulations we follow the orbits of field stars passing through a star cluster and calculate the energy change that the field stars experience due to gravitational interaction with cluster stars during one passage through the cluster. The capture condition is that their total energy after the passage is smaller than the gravitational potential at the cluster's tidal radius. By folding this with the fly-by rates of field stars with an assumed space density as in the solar neighbourhood and a range of velocity dispersions, we derive estimates on the mass fraction of captured field stars as a function of environment. We find that integrated over a Hubble time, the ratio between captured field stars and total number of clusters stars is very low (capture is not a probable mechanism for creating the colour-magnitude trend of metal-poor globular clusters.

Steffen Mieske; Holger Baumgardt

2007-09-10T23:59:59.000Z

488

Capture Formed Binaries via Encounters with Massive Protostars  

E-Print Network (OSTI)

Most massive stars are found in the center of dense clusters, and have a companion fraction much higher than their lower mass siblings; the massive stars of the Trapezium core in Orion have ~ 1.5 companions each. This high multiplicity could be a consequence of formation via a capture scenario, or it could be due to fragmentation of the cores that form the massive stars. During stellar formation circumstellar disks appear to be nearly ubiquitous. Their large radii compared to stellar sizes increase the interaction radius significantly, suggesting that disk interactions with neighboring stars could assist in capturing binary companions. This mechanism has been studied for stars of approximately solar mass and found to be inefficient. In this paper we present simulations of interactions between a 22 Msun star-disk system and less massive impactors, to study the disk-assisted capture formation of binaries in a regime suited to massive stars. The formation of binaries by capture is found to be much more efficient for massive capturers. We discuss the effects of a mass dependent velocity dispersion and mass segregation on the capture rates, and consider the long term survival of the resultant binaries in a dense cluster.

Nickolas Moeckel; John Bally

2006-10-20T23:59:59.000Z

489

Conceptual Design of a Fossil Hydrogen Infrastructure with Capture and Sequestration of Carbon Dioxide: Case Study in Ohio  

E-Print Network (OSTI)

ANNUAL CONFERENCE ON CARBON CAPTURE AND SEQUESTRATION DOE/energy systems with carbon capture and sequestration. Insources. Fossil H 2 with carbon capture and sequestration (

2005-01-01T23:59:59.000Z

490

Optimal Design of a Fossil Fuel-Based Hydrogen Infrastructure with Carbon Capture and Sequestration: Case Study in Ohio  

E-Print Network (OSTI)

Infrastructure with Carbon Capture and Sequestration: CaseINFRASTRUCTURE WITH CARBON CAPTURE AND SEQUESTRATION: CASEhydrogen production with carbon capture and sequestration,

Johnson, Nils; Yang, Christopher; Ni, Jason; Johnson, Joshua; Lin, Zhenhong; Ogden, Joan M

2005-01-01T23:59:59.000Z

491

Worker safety in a mature carbon capture and storage industry in the United States based upon analog industry experience  

E-Print Network (OSTI)

attributable to carbon capture and storage in 2050.safety in a mature carbon capture and storage industry insafety in a mature carbon capture and storage (CCS) industry

Jordan, P.D.

2014-01-01T23:59:59.000Z

492

Comparative Assessment of Status and Opportunities for CO2 Capture and Storage and Radioactive Waste Disposal in North America  

E-Print Network (OSTI)

and liability for carbon capture and sequestration, Environ.Wilson and Gerard, editors, Carbon Capture and SequestrationSpecial Report on carbon dioxide capture and storage, ISBN

Oldenburg, C.

2010-01-01T23:59:59.000Z

493

Newly appreciated roles for electrons in ion-atom collisions  

SciTech Connect

Since the previous Debrecen workshop on High-Energy Ion-Atom Collisions there have been numerous experiments and substantial theoretical developments in the fields of fast ion-atom and ion- solid collisions concerned with explicating the previously largely underappreciated role of electrons as ionizing and exciting agents in such collisions. Examples to be discussed include the double electron ionization problem in He; transfer ionization by protons in He; double excitation in He; backward scattering of electrons in He; the role of electron-electron interaction in determining beta parameters for ELC; projectile K ionization by target electrons; electron spin exchange in transfer excitation; electron impact ionization in crystal channels; resonant coherent excitation in crystal channels; excitation and dielectronic recombination in crystal channels; resonant transfer and excitation; the similarity of recoil ion spectra observed in coincidence with electron capture vs. electron loss; and new research on ion-atom collisions at relativistic energies.

Sellin, I.A. (Tennessee Univ., Knoxville, TN (USA). Dept. of Physics and Astronomy Oak Ridge National Lab., TN (USA))

1990-01-01T23:59:59.000Z

494

Rotary bed reactor for chemical-looping combustion with carbon capture ; Rotary bed reactor for CLC with carbon capture .  

E-Print Network (OSTI)

??Chemical-looping combustion (CLC) is a novel and promising technology for power generation with inherent CO2 capture. Currently almost all the research has been focused on… (more)

Zhao, Zhenlong

2012-01-01T23:59:59.000Z

495

E-Print Network 3.0 - attributes influencing capture Sample Search...  

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

influencing capture Search Powered by Explorit Topic List Advanced Search Sample search results for: attributes influencing capture Page: << < 1 2 3 4 5 > >> 1 An Incremental...

496

Novel Carbon Capture Solvent Begins Pilot-Scale Testing for Emissions...  

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

Novel Carbon Capture Solvent Begins Pilot-Scale Testing for Emissions Control Novel Carbon Capture Solvent Begins Pilot-Scale Testing for Emissions Control January 13, 2015 -...

497

Cosmic recycling of millisecond pulsars  

E-Print Network (OSTI)

We compare the rotation rate of neutron stars in low-mass X-ray binaries (LMXBs) with the orbital period of the binaries. We find that, while short orbital period LMXBs span a range of neutron star rotation rates, all the long period LMXBs have fast rotators. We also find that the rotation rates are highest for the systems with the highest mean mass accretion rates, as can be expected if the accretion rate correlates with the orbital period. We show that these properties can be understood by a balance between spin-up due to accretion and spin-down due to gravitational radiation. Our scenario indicates that the gravitational radiation emitted by these systems may be detectable by future ground-based gravitational wave detectors.

Wynn C. G. Ho; Thomas J. Maccarone; Nils Andersson

2011-02-21T23:59:59.000Z

498

Business model and strategy analysis for radiologists to use electronic health records (EHR)  

E-Print Network (OSTI)

Radiology is a medical specialty that employs imaging to diagnose and treat disease. It has long been an advance user of technology to capture, store, share, and use images electronically. In 2009, President Obama signed ...

Perumal, Palani

2012-01-01T23:59:59.000Z

499

Membrane-based systems for carbon capture and hydrogen purification  

SciTech Connect

This presentation describes the activities being conducted at Los Alamos National Laboratory to develop carbon capture technologies for power systems. This work is aimed at continued development and demonstration of a membrane based pre- and post-combustion carbon capture technology and separation schemes. Our primary work entails the development and demonstration of an innovative membrane technology for pre-combustion capture of carbon dioxide that operates over a broad range of conditions relevant to the power industry while meeting the US DOE's Carbon Sequestration Program goals of 90% CO{sub 2} capture at less than a 10% increase in the cost of energy services. Separating and capturing carbon dioxide from mixed gas streams is a first and critical step in carbon sequestration. To be technically and economically viable, a successful separation method must be applicable to industrially relevant gas streams at realistic temperatures and pressures as well as be compatible with large gas volumes. Our project team is developing polymer membranes based on polybenzimidazole (PBI) chemistries that can purify hydrogen and capture CO{sub 2} at industrially relevant temperatures. Our primary objectives are to develop and demonstrate polymer-based membrane chemistries, structures, deployment platforms, and sealing technologies that achieve the critical combination of high selectivity, high permeability, chemical stability, and mechanical stability all at elevated temperatures (> 150 C) and packaged in a scalable, economically viable, high area density system amenable to incorporation into an advanced Integrated Gasification Combined-Cycle (IGCC) plant for pre-combustion CO{sub 2} capture. Stability requirements are focused on tolerance to the primary synthesis gas components and impurities at various locations in the IGCC process. Since the process stream compositions and conditions (temperature and pressure) vary throughout the IGCC process, the project is focused on the optimization of a technology that could be positioned upstream or downstream of one or more of the water-gas-shift reactors (WGSRs) or integrated with a WGSR.

Berchtold, Kathryn A [Los Alamos National Laboratory

2010-11-24T23:59:59.000Z

500

Electron Transfer  

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

3 3 Pierre Kennepohl1,2 and Edward Solomon1* 1Department of Chemistry, Stanford University, Stanford, CA 94305 Electron transfer, or the act of moving an electron from one place to another, is amongst the simplest of chemical processes, yet certainly one of the most critical. The process of efficiently and controllably moving electrons around is one of the primary regulation mechanisms in biology. Without stringent control of electrons in living organisms, life could simply not exist. For example, photosynthesis and nitrogen fixation (to name but two of the most well-known biochemical activities) are driven by electron transfer processes. It is unsurprising, therefore, that much effort has been placed on understanding the fundamental principles that control and define the simple act of adding and/or removing electrons from chemical species.