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Sample records for mc quantum mechanics

  1. Crystal Structure of MC159 Reveals Molecular Mechanism of DISC...

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Search Results Journal Article: Crystal Structure of MC159 Reveals Molecular Mechanism of DISC Assembly and FLIP Inhibition Citation Details In-Document Search ...

  2. MC

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

    MC performance study for an early ν µ charged-current inclusive analysis with MicroBooNE MICROBOONE-NOTE-1004-PUB The MicroBooNE Collaboration November 6, 2015 Abstract This note describes an analysis performed on Monte Carlo data to evaluate the sensitivity of MicroBooNE for an early ν µ charged-current inclusive cross section measurement. Such an analysis is intended to be done using the first three months of Booster Neutrino Beam data. The event selection is entirely based on an automated

  3. QUANTUM MECHANICS WITHOUT STATISTICAL POSTULATES

    SciTech Connect (OSTI)

    G. GEIGER; ET AL

    2000-11-01

    The Bohmian formulation of quantum mechanics describes the measurement process in an intuitive way without a reduction postulate. Due to the chaotic motion of the hidden classical particle all statistical features of quantum mechanics during a sequence of repeated measurements can be derived in the framework of a deterministic single system theory.

  4. Phase space quantum mechanics - Direct

    SciTech Connect (OSTI)

    Nasiri, S.; Sobouti, Y.; Taati, F.

    2006-09-15

    Conventional approach to quantum mechanics in phase space (q,p), is to take the operator based quantum mechanics of Schroedinger, or an equivalent, and assign a c-number function in phase space to it. We propose to begin with a higher level of abstraction, in which the independence and the symmetric role of q and p is maintained throughout, and at once arrive at phase space state functions. Upon reduction to the q- or p-space the proposed formalism gives the conventional quantum mechanics, however, with a definite rule for ordering of factors of noncommuting observables. Further conceptual and practical merits of the formalism are demonstrated throughout the text.

  5. T-QUAKE Quantum Mechanical Microchip

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

    Principal application T-QUAKE Quantum Mechanical Microchip The quantum world defies intuition. One of its axioms, the Heisenberg Uncertainty Principle, states that any attempt to measure the position or momentum of a quantum object changes the object itself. Historically, this principle was viewed as a hindrance by scientists trying to examine quantum particles. But the same quantum effects that make them difficult to measure have long been of interest to the cryptography and intelligence

  6. Deformation Quantization: Quantum Mechanic Lives and Works in...

    Office of Scientific and Technical Information (OSTI)

    It has been useful in describing quantum flows in: quantum optics; nuclear physics; ... Subject: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 73 NUCLEAR PHYSICS AND ...

  7. QUANTUM MECHANICS, GENERAL PHYSICS; 74 ATOMIC AND MOLECULAR PHYSICS...

    Office of Scientific and Technical Information (OSTI)

    of model atoms in fields Milonni, P.W. 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 74 ATOMIC AND MOLECULAR PHYSICS; ATOMS; OPTICAL MODELS; QUANTUM MECHANICS;...

  8. T-QUAKE Quantum Mechanical Microchip

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

    3b) How does the product operate? T-QUAKE Quantum Mechanical Microchip Delivering quantum-encoded secret keys is known as Quantum Key Distribution, or QKD; in essence it involves transmitting a series of randomly generated, quantum-encoded bits of information between a sender and a receiver, Alice and Bob, over a distance. This string of bits, called qubits, becomes the secret key Alice and Bob use to interpret encoded messages sent over less-secure channels. In the case of T-QUAKE, which relies

  9. Supersymmetric q-deformed quantum mechanics

    SciTech Connect (OSTI)

    Traikia, M. H.; Mebarki, N.

    2012-06-27

    A supersymmetric q-deformed quantum mechanics is studied in the weak deformation approximation of the Weyl-Heisenberg algebra. The corresponding supersymmetric q-deformed hamiltonians and charges are constructed explicitly.

  10. Multichannel framework for singular quantum mechanics

    SciTech Connect (OSTI)

    Camblong, Horacio E.; Epele, Luis N.; Fanchiotti, Huner; Garca Canal, Carlos A.; Ordez, Carlos R.

    2014-01-15

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

  11. Statistical mechanics based on fractional classical and quantum mechanics

    SciTech Connect (OSTI)

    Korichi, Z.; Meftah, M. T.

    2014-03-15

    The purpose of this work is to study some problems in statistical mechanics based on the fractional classical and quantum mechanics. At first stage we have presented the thermodynamical properties of the classical ideal gas and the system of N classical oscillators. In both cases, the Hamiltonian contains fractional exponents of the phase space (position and momentum). At the second stage, in the context of the fractional quantum mechanics, we have calculated the thermodynamical properties for the black body radiation, studied the Bose-Einstein statistics with the related problem of the condensation and the Fermi-Dirac statistics.

  12. Quantum mechanical studies of carbon structures

    SciTech Connect (OSTI)

    Bartelt, Norman Charles; Ward, Donald; Zhou, Xiaowang; Foster, Michael E.; Schultz, Peter A.; Wang, Bryan M.; McCarty, Kevin F.

    2015-10-01

    Carbon nanostructures, such as nanotubes and graphene, are of considerable interest due to their unique mechanical and electrical properties. The materials exhibit extremely high strength and conductivity when defects created during synthesis are minimized. Atomistic modeling is one technique for high resolution studies of defect formation and mitigation. To enable simulations of the mechanical behavior and growth mechanisms of C nanostructures, a high-fidelity analytical bond-order potential for the C is needed. To generate inputs for developing such a potential, we performed quantum mechanical calculations of various C structures.

  13. T-QUAKE Quantum Mechanical Microchip

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

    4b) Describe how your product/service improves upon competitive products or technologies. T-QUAKE Quantum Mechanical Microchip Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000. SAND2016-4224 O The Sandia team has created the first-ever functioning CV-QKD quantum photonic

  14. Effect of Cusps in Time-Dependent Quantum Mechanics (Journal...

    Office of Scientific and Technical Information (OSTI)

    Effect of Cusps in Time-Dependent Quantum Mechanics Title: Effect of Cusps in Time-Dependent Quantum Mechanics Authors: Yang, Zeng-hui ; Maitra, Neepa T. ; Burke, Kieron ...

  15. Deformation Quantization: Quantum Mechanic Lives and Works in...

    Office of Scientific and Technical Information (OSTI)

    DENSITY MATRIX; DISTRIBUTION FUNCTIONS; FERMILAB; HILBERT SPACE; NUCLEAR PHYSICS; OPTICS; PATH INTEGRALS; PHASE SPACE; PROCESSING; QUANTIZATION; QUANTUM MECHANICS; UNCERTAINTY...

  16. Baryon Spectrum from Superconformal Quantum Mechanics and its...

    Office of Scientific and Technical Information (OSTI)

    Baryon Spectrum from Superconformal Quantum Mechanics and its Light-Front Holographic Embedding Citation Details In-Document Search Title: Baryon Spectrum from Superconformal...

  17. Baryon Spectrum from Superconformal Quantum Mechanics and its...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Baryon Spectrum from Superconformal Quantum Mechanics and its Light-Front Holographic Embedding Citation Details In-Document Search Title: Baryon Spectrum from...

  18. Quantum-Mechanical Interatomic Potentials with Electron Temperature...

    Office of Scientific and Technical Information (OSTI)

    Electron Temperature for Strong Coupling Transition Metals Citation Details In-Document Search Title: Quantum-Mechanical Interatomic Potentials with Electron Temperature for ...

  19. Tampering detection system using quantum-mechanical systems

    DOE Patents [OSTI]

    Humble, Travis S.; Bennink, Ryan S.; Grice, Warren P.

    2011-12-13

    The use of quantum-mechanically entangled photons for monitoring the integrity of a physical border or a communication link is described. The no-cloning principle of quantum information science is used as protection against an intruder's ability to spoof a sensor receiver using a `classical` intercept-resend attack. Correlated measurement outcomes from polarization-entangled photons are used to protect against quantum intercept-resend attacks, i.e., attacks using quantum teleportation.

  20. COLLOQUIUM: Quantum Mechanics and Spacetime Geometry | Princeton Plasma

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

    Physics Lab February 25, 2014, 4:00pm to 5:30pm Colloquia MBG Auditorium COLLOQUIUM: Quantum Mechanics and Spacetime Geometry Professor Juan Maldacena Institute for Advanced Study Quantum mechanics is important for determining the geometry of spacetime. We will review the role of quantum fluctuations that determine the large scale structure of the universe. In some model universes we can give an alternative description of the physics in terms of a theory of particles that lives on its

  1. Nonlinear Phenomenology from Quantum Mechanics: Soliton in a Lattice

    SciTech Connect (OSTI)

    Javanainen, Juha; Shrestha, Uttam

    2008-10-24

    We study a soliton in an optical lattice holding bosonic atoms quantum mechanically using both an exact numerical solution and quantum Monte Carlo simulations. The computation of the state is combined with an explicit account of the measurements of the numbers of the atoms at the lattice sites. In particular, importance sampling in the quantum Monte Carlo method arguably produces faithful simulations of individual experiments. Even though the quantum state is invariant under lattice translations, an experiment may show a noisy version of the localized classical soliton.

  2. On the hypothesis that quantum mechanism manifests classical mechanics: Numerical approach to the correspondence in search of quantum chaos

    SciTech Connect (OSTI)

    Lee, Sang-Bong

    1993-09-01

    Quantum manifestation of classical chaos has been one of the extensively studied subjects for more than a decade. Yet clear understanding of its nature still remains to be an open question partly due to the lack of a canonical definition of quantum chaos. The classical definition seems to be unsuitable in quantum mechanics partly because of the Heisenberg quantum uncertainty. In this regard, quantum chaos is somewhat misleading and needs to be clarified at the very fundamental level of physics. Since it is well known that quantum mechanics is more fundamental than classical mechanics, the quantum description of classically chaotic nature should be attainable in the limit of large quantum numbers. The focus of my research, therefore, lies on the correspondence principle for classically chaotic systems. The chaotic damped driven pendulum is mainly studied numerically using the split operator method that solves the time-dependent Schroedinger equation. For classically dissipative chaotic systems in which (multi)fractal strange attractors often emerge, several quantum dissipative mechanisms are also considered. For instance, Hoover`s and Kubo-Fox-Keizer`s approaches are studied with some computational analyses. But the notion of complex energy with non-Hermiticity is extensively applied. Moreover, the Wigner and Husimi distribution functions are examined with an equivalent classical distribution in phase-space, and dynamical properties of the wave packet in configuration and momentum spaces are also explored. The results indicate that quantum dynamics embraces classical dynamics although the classicalquantum correspondence fails to be observed in the classically chaotic regime. Even in the semi-classical limits, classically chaotic phenomena would eventually be suppressed by the quantum uncertainty.

  3. Unstable particles in non-relativistic quantum mechanics?

    SciTech Connect (OSTI)

    Hernandez-Coronado, H.

    2011-10-14

    The Schroedinger equation is up-to-a-phase invariant under the Galilei group. This phase leads to the Bargmann's superselection rule, which forbids the existence of the superposition of states with different mass and implies that unstable particles cannot be described consistently in non-relativistic quantum mechanics (NRQM). In this paper we claim that Bargmann's rule neglects physical effects and that a proper description of non-relativistic quantum mechanics requires to take into account this phase through the Extended Galilei group and the definition of its action on spacetime coordinates.

  4. A quantum mechanical description of particle spin rotation in channeling

    SciTech Connect (OSTI)

    Silenko, A.Ya.

    1995-04-01

    Spin rotation of spin-1/2 particles involved in planar channeling in straight and bent crystals is described in a consistent quantum mechanical manner. This is done by solving the Dirac equation in the Foldy-Wouthuysen representation, constructing an operator equation of motion for the spin, and calculating the average value of the spin precession frequency. For the case of channeling in bent crystals agreement is observed between the classical and quantum mechanical expressions, provided that the field of the planes is approximated by a harmonic potential. The effect of spin rotation in straight crystals is also examined. 17 refs.

  5. Deformation Quantization: Quantum Mechanic Lives and Works in...

    Office of Scientific and Technical Information (OSTI)

    of the density matrix. It has been useful in describing quantum flows in: quantum optics; nuclear physics; decoherence (eg, quantum computing); quantum chaos; 'Welcher Weg'...

  6. Deformation Quantization: Quantum Mechanic Lives and Works in Phase-Space

    Office of Scientific and Technical Information (OSTI)

    (Conference) | SciTech Connect Conference: Deformation Quantization: Quantum Mechanic Lives and Works in Phase-Space Citation Details In-Document Search Title: Deformation Quantization: Quantum Mechanic Lives and Works in Phase-Space Wigner's 1932 quasi-probability Distribution Function in phase-space is a special (Weyl) representation of the density matrix. It has been useful in describing quantum flows in: quantum optics; nuclear physics; decoherence (eg, quantum computing); quantum chaos;

  7. Methods of quantum mechanics applied to partially coherent light beams

    SciTech Connect (OSTI)

    Gase, R.

    1994-07-01

    Whenever the natural modes of the modal expansion of the cross-spectral density have a common waist, the wave equation in the waist plane has the form of a two-dimensional Schroedinger equation. Thus the results of quantum mechanics and quantum statistics, including the quantized Schroedinger field, can be transferred to partially coherent light. Such conceptions as temperature, entropy, and energy are used advantageously. A subclass of radiation, radiation in thermal equilibrium, is introduced, and, as examples, the Gaussian Schell-model beam and the quasi-rectangle model beam are investigated. The M{sup 2} factor is strongly related to the mean value of energy. 29 refs., 3 figs.

  8. Jarzynski equality in PT-symmetric quantum mechanics

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

    Deffner, Sebastian; Saxena, Avadh

    2015-04-13

    We show that the quantum Jarzynski equality generalizes to PT -symmetric quantum mechanics with unbroken PT -symmetry. In the regime of broken PT -symmetry the Jarzynski equality does not hold as also the CPT -norm is not preserved during the dynamics. These findings are illustrated for an experimentally relevant system – two coupled optical waveguides. It turns out that for these systems the phase transition between the regimes of unbroken and broken PT -symmetry is thermodynamically inhibited as the irreversible work diverges at the critical point.

  9. A broken symmetry ontology: Quantum mechanics as a broken symmetry

    SciTech Connect (OSTI)

    Buschmann, J.E.

    1988-01-01

    The author proposes a new broken symmetry ontology to be used to analyze the quantum domain. This ontology is motivated and grounded in a critical epistemological analysis, and an analysis of the basic role of symmetry in physics. Concurrently, he is led to consider nonheterogeneous systems, whose logical state space contains equivalence relations not associated with the causal relation. This allows him to find a generalized principle of symmetry and a generalized symmetry-conservation formalisms. In particular, he clarifies the role of Noether's theorem in field theory. He shows how a broken symmetry ontology already operates in a description of the weak interactions. Finally, by showing how a broken symmetry ontology operates in the quantum domain, he accounts for the interpretational problem and the essential incompleteness of quantum mechanics. He proposes that the broken symmetry underlying this ontological domain is broken dilation invariance.

  10. PPPL researchers combine quantum mechanics and Einstein's theory of

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

    special relativity to clear up puzzles in plasma physics | Princeton Plasma Physics Lab researchers combine quantum mechanics and Einstein's theory of special relativity to clear up puzzles in plasma physics By John Greenwald July 29, 2016 Tweet Widget Google Plus One Share on Facebook Graduate student Yuan Shi (Photo by Elle Starkman/Office of Communications) Graduate student Yuan Shi Gallery: Sketch of a pulsar, center, in binary star system (Photo credit: NASA Goddard Space Flight Center)

  11. PPPL researchers combine quantum mechanics and Einstein's theory of

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

    special relativity to clear up puzzles in plasma physics | Princeton Plasma Physics Lab researchers combine quantum mechanics and Einstein's theory of special relativity to clear up puzzles in plasma physics By John Greenwald July 29, 2016 Tweet Widget Google Plus One Share on Facebook Graduate student Yuan Shi (Photo by Elle Starkman/Office of Communications) Graduate student Yuan Shi Gallery: Sketch of a pulsar, center, in binary star system (Photo credit: NASA Goddard Space Flight Center)

  12. Twisting all the way: From classical mechanics to quantum fields

    SciTech Connect (OSTI)

    Aschieri, Paolo

    2008-01-15

    We discuss the effects that a noncommutative geometry induced by a Drinfeld twist has on physical theories. We systematically deform all products and symmetries of the theory. We discuss noncommutative classical mechanics, in particular its deformed Poisson bracket and hence time evolution and symmetries. The twisting is then extended to classical fields, and then to the main interest of this work: quantum fields. This leads to a geometric formulation of quantization on noncommutative space-time, i.e., we establish a noncommutative correspondence principle from *-Poisson brackets to * commutators. In particular commutation relations among creation and annihilation operators are deduced.

  13. Chan, H. B.; Yelton, J. 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL...

    Office of Scientific and Technical Information (OSTI)

    in microelectromechanical systems Chan, H. B.; Yelton, J. 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Our goal was to explore the strong dependence of the Casimir force...

  14. Quantum-mechanical aspects of classically chaotic driven systems

    SciTech Connect (OSTI)

    Milonni, P.W.; Ackerhalt, J.R.; Goggin, M.E.

    1987-01-01

    This paper treats atoms and molecules in laser fields as periodically driven quantum systems. The paper concludes by determining that stochastic excitation is possible in quantum systems with quasiperiodic driving. 17 refs. (JDH)

  15. Supersymmetric descendants of self-adjointly extended quantum mechanical Hamiltonians

    SciTech Connect (OSTI)

    Al-Hashimi, M.H.; Salman, M.; Shalaby, A.; Wiese, U.-J.

    2013-10-15

    We consider the descendants of self-adjointly extended Hamiltonians in supersymmetric quantum mechanics on a half-line, on an interval, and on a punctured line or interval. While there is a 4-parameter family of self-adjointly extended Hamiltonians on a punctured line, only a 3-parameter sub-family has supersymmetric descendants that are themselves self-adjoint. We also address the self-adjointness of an operator related to the supercharge, and point out that only a sub-class of its most general self-adjoint extensions is physical. Besides a general characterization of self-adjoint extensions and their supersymmetric descendants, we explicitly consider concrete examples, including a particle in a box with general boundary conditions, with and without an additional point interaction. We also discuss bulk-boundary resonances and their manifestation in the supersymmetric descendant. -- Highlights: Self-adjoint extension theory and contact interactions. Application of self-adjoint extensions to supersymmetry. Contact interactions in finite volume with Robin boundary condition.

  16. The von Neumann model of measurement in quantum mechanics

    SciTech Connect (OSTI)

    Mello, Pier A.

    2014-01-08

    We describe how to obtain information on a quantum-mechanical system by coupling it to a probe and detecting some property of the latter, using a model introduced by von Neumann, which describes the interaction of the system proper with the probe in a dynamical way. We first discuss single measurements, where the system proper is coupled to one probe with arbitrary coupling strength. The goal is to obtain information on the system detecting the probe position. We find the reduced density operator of the system, and show how Lders rule emerges as the limiting case of strong coupling. The von Neumann model is then generalized to two probes that interact successively with the system proper. Now we find information on the system by detecting the position-position and momentum-position correlations of the two probes. The so-called 'Wigner's formula' emerges in the strong-coupling limit, while 'Kirkwood's quasi-probability distribution' is found as the weak-coupling limit of the above formalism. We show that successive measurements can be used to develop a state-reconstruction scheme. Finally, we find a generalized transform of the state and the observables based on the notion of successive measurements.

  17. Frequency-domain multiscale quantum mechanics/electromagnetics simulation method

    SciTech Connect (OSTI)

    Meng, Lingyi; Yin, Zhenyu; Yam, ChiYung E-mail: ghc@everest.hku.hk; Koo, SiuKong; Chen, GuanHua E-mail: ghc@everest.hku.hk; Chen, Quan; Wong, Ngai

    2013-12-28

    A frequency-domain quantum mechanics and electromagnetics (QM/EM) method is developed. Compared with the time-domain QM/EM method [Meng et al., J. Chem. Theory Comput. 8, 11901199 (2012)], the newly developed frequency-domain QM/EM method could effectively capture the dynamic properties of electronic devices over a broader range of operating frequencies. The system is divided into QM and EM regions and solved in a self-consistent manner via updating the boundary conditions at the QM and EM interface. The calculated potential distributions and current densities at the interface are taken as the boundary conditions for the QM and EM calculations, respectively, which facilitate the information exchange between the QM and EM calculations and ensure that the potential, charge, and current distributions are continuous across the QM/EM interface. Via Fourier transformation, the dynamic admittance calculated from the time-domain and frequency-domain QM/EM methods is compared for a carbon nanotube based molecular device.

  18. Theoretical Study of the Inverting Mechanism in a Processive Cellobiohydrolase with Quantum Mechanical Calculations

    SciTech Connect (OSTI)

    Kim, S.; Payne, C. M.; Himmel, M. E.; Crowley, M. F.; Paton, R. S.; Beckham, G. T.

    2012-01-01

    The Hypocrea jecorina Family 6 cellobiohydrolase (Cel6A) is one of most efficient enzymes for cellulose deconstruction to soluble sugars and is thus of significant current interest for the growing biofuels industry. Cel6A is known to hydrolyze b(1,4)-glycosidic linkages in cellulose via an inverting mechanism, but there are still questions that remain regarding the role of water and the catalytic base. Here we study the inverting, single displacement, hydrolytic reaction mechanism in Cel6A using density functional theory (DFT) calculations. The computational model used to follow the reaction is a truncated active site model with several explicit waters based on structural studies of H. jecorina Cel6A. Proposed mechanisms are evaluated with several density functionals. From our calculations, the role of the water in nucleophilic attack on the anomeric carbon, and the roles of several residues in the active site loops are elucidated explicitly for the first time. We also apply quantum mechanical calculations to understand the proton transfer reaction which completes the catalytic cycle.

  19. Deformation quantization : quantum mechanics lives and works in phase-space.

    SciTech Connect (OSTI)

    Zachos, C.; High Energy Physics

    2002-01-30

    Wigner's quasi-probability distribution function in phase-space is a special (Weyl) representation of the density matrix. It has been useful in describing quantum transport in quantum optics; nuclear physics; decoherence (e.g. quantum computing); quantum chaos; 'Welcher Weg' discussions; semiclassical limits. It is also of importance in signal processing. Nevertheless, a remarkable aspect of its internal logic, pioneered by Moyal, has only emerged in the last quarter-century: It furnishes a third, alternative, formulation of Quantum Mechanics, independent of the conventional Hilbert Space, or Path Integral formulations. In this logically complete and self-standing formulation, one need not choose sides--coordinate or momentum space. It works in full phase-space, accommodating the uncertainty principle. This is an introductory overview of the formulation with simple illustrations.

  20. Deformation Quantization: Quantum Mechanic Lives and Works in Phase-Space

    SciTech Connect (OSTI)

    Zachos, Cosmas (Argonne National Laboratory) [Argonne National Laboratory

    2001-08-01

    Wigner's 1932 quasi-probability Distribution Function in phase-space is a special (Weyl) representation of the density matrix. It has been useful in describing quantum flows in: quantum optics; nuclear physics; decoherence (eg, quantum computing); quantum chaos; 'Welcher Weg' discussions; semiclassical limits. It is also of importance in signal processing. Nevertheless, a remarkable aspect of its internal logic, pioneered by the late Moyal, has only emerged in the last quarter-century: It furnishes a third, alternate, formulation of Quantum Mechanics, independent of the conventional Hilbert Space, or Path Integral formulations. It is logically complete and self-standing, and accommodates the uncertainty principle in an unexpected manner. Simple illustrations of this fact will be detailed.

  1. Facile synthesis and photoluminescence mechanism of graphene quantum dots

    SciTech Connect (OSTI)

    Yang, Ping; Zhou, Ligang; Zhang, Shenli; Pan, Wei Shen, Wenzhong; Wan, Neng

    2014-12-28

    We report a facile hydrothermal synthesis of intrinsic fluorescent graphene quantum dots (GQDs) with two-dimensional morphology. This synthesis uses glucose, concentrate sulfuric acid, and deionized water as reagents. Concentrated sulfuric acid is found to play a key role in controlling the transformation of as-prepared hydrothermal products from amorphous carbon nanodots to well-crystallized GQDs. These GQDs show typical absorption characteristic for graphene, and have nearly excitation-independent ultraviolet and blue intrinsic emissions. Temperature-dependent PL measurements have demonstrated strong electron-electron scattering and electron-phonon interactions, suggesting a similar temperature behavior of GQDs to inorganic semiconductor quantum dots. According to optical studies, the ultraviolet emission is found to originate from the recombination of electron-hole pairs localized in the C=C bonds, while the blue emission is from the electron transition of sp{sup 2} domains.

  2. Quantum Mechanical Corrections to Simulated Shock Hugoniot Temperatures

    SciTech Connect (OSTI)

    Goldman, N; Reed, E; Fried, L E

    2009-07-17

    The authors present a straightforward method for the inclusion of quantum nuclear vibrational effects in molecular dynamics calculations of shock Hugoniot temperatures. Using a grueneisen equation of state and a quasi-harmonic approximation to the vibrational energies, they derive a simple, post-processing method for calculation of the quantum corrected Hugoniot temperatures. They have used our novel technique on ab initio simulations of both shock compressed water and methane. Our results indicate significantly closer agreement with all available experimental temperature data for these two systems. Our formalism and technique can be easily applied to a number of different shock compressed molecular liquids or covalent solids, and has the potential to decrease the large uncertainties inherent in many experimental Hugoniot temperature measurements of these systems.

  3. Absorbing boundary conditions for relativistic quantum mechanics equations

    SciTech Connect (OSTI)

    Antoine, X.; Sater, J.; Fillion-Gourdeau, F.; Bandrauk, A.D.

    2014-11-15

    This paper is devoted to the derivation of absorbing boundary conditions for the Klein–Gordon and Dirac equations modeling quantum and relativistic particles subject to classical electromagnetic fields. Microlocal analysis is the main ingredient in the derivation of these boundary conditions, which are obtained in the form of pseudo-differential equations. Basic numerical schemes are derived and analyzed to illustrate the accuracy of the derived boundary conditions.

  4. Generalized contexts and consistent histories in quantum mechanics

    SciTech Connect (OSTI)

    Losada, Marcelo; Laura, Roberto

    2014-05-15

    We analyze a restriction of the theory of consistent histories by imposing that a valid description of a physical system must include quantum histories which satisfy the consistency conditions for all states. We prove that these conditions are equivalent to imposing the compatibility conditions of our formalism of generalized contexts. Moreover, we show that the theory of consistent histories with the consistency conditions for all states and the formalism of generalized context are equally useful representing expressions which involve properties at different times.

  5. Wigner functions for noncommutative quantum mechanics: A group representation based construction

    SciTech Connect (OSTI)

    Chowdhury, S. Hasibul Hassan; Ali, S. Twareque

    2015-12-15

    This paper is devoted to the construction and analysis of the Wigner functions for noncommutative quantum mechanics, their marginal distributions, and star-products, following a technique developed earlier, viz, using the unitary irreducible representations of the group G{sub NC}, which is the three fold central extension of the Abelian group of ℝ{sup 4}. These representations have been exhaustively studied in earlier papers. The group G{sub NC} is identified with the kinematical symmetry group of noncommutative quantum mechanics of a system with two degrees of freedom. The Wigner functions studied here reflect different levels of non-commutativity—both the operators of position and those of momentum not commuting, the position operators not commuting and finally, the case of standard quantum mechanics, obeying the canonical commutation relations only.

  6. Joshua McConaha

    Broader source: Energy.gov [DOE]

    Joshua McConaha is the Deputy Director of Public Affairs for the National Nuclear Security Administration.

  7. Treating electrostatics with Wolf summation in combined quantum mechanical and molecular mechanical simulations

    SciTech Connect (OSTI)

    Ojeda-May, Pedro; Pu, Jingzhi

    2015-11-07

    The Wolf summation approach [D. Wolf et al., J. Chem. Phys. 110, 8254 (1999)], in the damped shifted force (DSF) formalism [C. J. Fennell and J. D. Gezelter, J. Chem. Phys. 124, 234104 (2006)], is extended for treating electrostatics in combined quantum mechanical and molecular mechanical (QM/MM) molecular dynamics simulations. In this development, we split the QM/MM electrostatic potential energy function into the conventional Coulomb r{sup −1} term and a term that contains the DSF contribution. The former is handled by the standard machinery of cutoff-based QM/MM simulations whereas the latter is incorporated into the QM/MM interaction Hamiltonian as a Fock matrix correction. We tested the resulting QM/MM-DSF method for two solution-phase reactions, i.e., the association of ammonium and chloride ions and a symmetric SN{sub 2} reaction in which a methyl group is exchanged between two chloride ions. The performance of the QM/MM-DSF method was assessed by comparing the potential of mean force (PMF) profiles with those from the QM/MM-Ewald and QM/MM-isotropic periodic sum (IPS) methods, both of which include long-range electrostatics explicitly. For ion association, the QM/MM-DSF method successfully eliminates the artificial free energy drift observed in the QM/MM-Cutoff simulations, in a remarkable agreement with the two long-range-containing methods. For the SN{sub 2} reaction, the free energy of activation obtained by the QM/MM-DSF method agrees well with both the QM/MM-Ewald and QM/MM-IPS results. The latter, however, requires a greater cutoff distance than QM/MM-DSF for a proper convergence of the PMF. Avoiding time-consuming lattice summation, the QM/MM-DSF method yields a 55% reduction in computational cost compared with the QM/MM-Ewald method. These results suggest that, in addition to QM/MM-IPS, the QM/MM-DSF method may serve as another efficient and accurate alternative to QM/MM-Ewald for treating electrostatics in condensed-phase simulations of chemical

  8. Zaida McCunney

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

    Zaida McCunney Zaida McCunney Zaida.jpg Zaida McCunney Administrative Supervisor NERSC ZSMcCunney@lbl.gov Phone: (510) 486-6247 Fax: (510) 486-4316 Last edited: 2016-04-29 11:35:24

  9. Many worlds and modality in the interpretation of quantum mechanics: An algebraic approach

    SciTech Connect (OSTI)

    Domenech, G.; Freytes, H.; Ronde, C. de

    2009-07-15

    Many world interpretations (MWIs) of quantum mechanics avoid the measurement problem by considering every term in the quantum superposition as actual. A seemingly opposed solution is proposed by modal interpretations (MIs) which state that quantum mechanics does not provide an account of what 'actually is the case', but rather deals with what 'might be the case', i.e., with possibilities. In this paper we provide an algebraic framework which allows us to analyze in depth the modal aspects of MWI. Within our general formal scheme we also provide a formal comparison between MWI and MI, in particular, we provide a formal understanding of why - even though both interpretations share the same formal structure - MI fall pray of Kochen-Specker-type contradictions while MWI escape them.

  10. Chemical dynamics in the gas phase: Time-dependent quantum mechanics of chemical reactions

    SciTech Connect (OSTI)

    Gray, S.K.

    1993-12-01

    A major goal of this research is to obtain an understanding of the molecular reaction dynamics of three and four atom chemical reactions using numerically accurate quantum dynamics. This work involves: (i) the development and/or improvement of accurate quantum mechanical methods for the calculation and analysis of the properties of chemical reactions (e.g., rate constants and product distributions), and (ii) the determination of accurate dynamical results for selected chemical systems, which allow one to compare directly with experiment, determine the reliability of the underlying potential energy surfaces, and test the validity of approximate theories. This research emphasizes the use of recently developed time-dependent quantum mechanical methods, i.e. wave packet methods.

  11. A parametric approach to supersymmetric quantum mechanics in the solution of Schrdinger equation

    SciTech Connect (OSTI)

    Tezcan, Cevdet; Sever, Ramazan

    2014-03-15

    We study exact solutions of the Schrdinger equation for some potentials. We introduce a parametric approach to supersymmetric quantum mechanics to calculate energy eigenvalues and corresponding wave functions exactly. As an application we solve Schrdinger equation for the generalized Morse potential, modified Hulthen potential, deformed Rosen-Morse potential and Poschl-Teller potential. The method is simple and effective to get the results.

  12. On the nonstationary quantum-mechanical origin of nuclear reactions in solids

    SciTech Connect (OSTI)

    Chechin, V.A.; Tsarev, V.A. )

    1994-07-01

    A model for deuteron reactions in solids is suggested in which an increase in the penetrability of the Coulomb barrier is attributed to a quantum-mechanical perturbation of the wave function caused by nonstationary deuterons in a crystalline lattice. 15 refs.

  13. Philosophy of Mind and the Problem of FreeWill in the Light of Quantum Mechanics.

    SciTech Connect (OSTI)

    Stapp, Henry; Stapp, Henry P

    2008-04-01

    Arguments pertaining to the mind-brain connection and to the physical effectiveness of our conscious choices have been presented in two recent books, one by John Searle, the other by Jaegwon Kim. These arguments are examined, and it is argued that the difficulties encountered arise from a defective understanding and application of a pertinent part of contemporary science, namely quantum mechanics.

  14. Quantum mechanical method of fragment's angular and energy distribution calculation for binary and ternary fission

    SciTech Connect (OSTI)

    Kadmensky, S. G., E-mail: kadmensky@phys.vsu.ru; Titova, L. V.; Pen'kov, N. V. [Voronezh State University (Russian Federation)

    2006-08-15

    In the framework of quantum-mechanical fission theory, the method of calculation for partial fission width amplitudes and asymptotic behavior of the fissile nucleus wave function with strong channel coupling taken into account has been suggested. The method allows one to solve the calculation problem of angular and energy distribution countation for binary and ternary fission.

  15. Measurement-only topological quantum computation via anyonic...

    Office of Scientific and Technical Information (OSTI)

    Subject: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANYONS; HALL EFFECT; INTERFEROMETRY; QUANTUM COMPUTERS; QUANTUM MECHANICS; QUANTUM TELEPORTATION; TOPOLOGY; ...

  16. The Wonders of Supersymmetry: From Quantum Mechanics, Topology, and Noise, to (maybe) the LHC

    ScienceCinema (OSTI)

    Poppitz, Erich [University of Toronto, Toronto, Ontario, Canada

    2010-09-01

    Supersymmetry, relating bosons and fermions was discovered almost 40 years ago in string theory and in quantum field theory, but the seeds of its 'miraculous' properties could have been seen already in quantum mechanics - which is also where it has found some of its more important applications. This talk introduces supersymmetry via the supersymmetric anharmonic oscillator. We shall see that this seemingly trivial example is sufficiently rich, allowing us to illustrate the uses of supersymmetric concepts in a variety of fields: mathematics, elementary particle physics, critical phenomena, and stochastic dynamics.

  17. What is behind small deviations of quantum mechanics theory from experiments? Observer's mathematics point of view

    SciTech Connect (OSTI)

    Khots, Boris; Khots, Dmitriy

    2014-12-10

    Certain results that have been predicted by Quantum Mechanics (QM) theory are not always supported by experiments. This defines a deep crisis in contemporary physics and, in particular, quantum mechanics. We believe that, in fact, the mathematical apparatus employed within today's physics is a possible reason. In particular, we consider the concept of infinity that exists in today's mathematics as the root cause of this problem. We have created Observer's Mathematics that offers an alternative to contemporary mathematics. This paper is an attempt to relay how Observer's Mathematics may explain some of the contradictions in QM theory results. We consider the Hamiltonian Mechanics, Newton equation, Schrodinger equation, two slit interference, wave-particle duality for single photons, uncertainty principle, Dirac equations for free electron in a setting of arithmetic, algebra, and topology provided by Observer's Mathematics (see www.mathrelativity.com). Certain results and communications pertaining to solution of these problems are provided.

  18. Doug McCune

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

    Doug McCune Doug McCune FES Requirements Worksheet 1.1. Project Information - Title Document Prepared By Doug McCune Project Title Title Principal Investigator Doug McCune Participating Organizations Funding Agencies DOE SC DOE NSA NSF NOAA NIH Other: 2. Project Summary & Scientific Objectives for the Next 5 Years Please give a brief description of your project - highlighting its computational aspect - and outline its scientific objectives for the next 3-5 years. Please list one or two

  19. Jessica McChesney

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

    Sector 6 Orientation Publications (4-ID) Publications (6-ID) Contact Us APS Ring Status Current APS Schedule Jessica McChesney Argonne National Laboratory 9700 S. Cass Ave...

  20. Edward McGinnis

    Office of Energy Efficiency and Renewable Energy (EERE)

    Mr. McGinnis is responsible for the Department of Energy's international civilian nuclear energy activities, including international nuclear energy research, development and demonstration...

  1. The Radical Pair Mechanism and the Avian Chemical Compass: Quantum Coherence and Entanglement

    SciTech Connect (OSTI)

    Zhang, Yiteng; Kais, Sabre; Berman, Gennady Petrovich

    2015-02-02

    We review the spin radical pair mechanism which is a promising explanation of avian navigation. This mechanism is based on the dependence of product yields on 1) the hyperfine interaction involving electron spins and neighboring nuclear spins and 2) the intensity and orientation of the geomagnetic field. One surprising result is that even at ambient conditions quantum entanglement of electron spins can play an important role in avian magnetoreception. This review describes the general scheme of chemical reactions involving radical pairs generated from singlet and triplet precursors; the spin dynamics of the radical pairs; and the magnetic field dependence of product yields caused by the radical pair mechanism. The main part of the review includes a description of the chemical compass in birds. We review: the general properties of the avian compass; the basic scheme of the radical pair mechanism; the reaction kinetics in cryptochrome; quantum coherence and entanglement in the avian compass; and the effects of noise. We believe that the quantum avian compass can play an important role in avian navigation and can also provide the foundation for a new generation of sensitive and selective magnetic-sensing nano-devices.

  2. Structure/Function Studies of Proteins Using Linear Scaling Quantum Mechanical Methodologies

    SciTech Connect (OSTI)

    Merz, K. M.

    2004-07-19

    We developed a linear-scaling semiempirical quantum mechanical (QM) program (DivCon). Using DivCon we can now routinely carry out calculations at the fully QM level on systems containing up to about 15 thousand atoms. We also implemented a Poisson-Boltzmann (PM) method into DivCon in order to compute solvation free energies and electrostatic properties of macromolecules in solution. This new suite of programs has allowed us to bring the power of quantum mechanics to bear on important biological problems associated with protein folding, drug design and enzyme catalysis. Hence, we have garnered insights into biological systems that have been heretofore impossible to obtain using classical simulation techniques.

  3. Baryon spectrum from superconformal quantum mechanics and its light-front holographic embedding

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

    de Teramond, Guy F.; Dosch, Hans Gunter; Brodsky, Stanley J.

    2015-02-27

    We describe the observed light-baryon spectrum by extending superconformal quantum mechanics to the light front and its embedding in AdS space. This procedure uniquely determines the confinement potential for arbitrary half-integer spin. To this end, we show that fermionic wave equations in AdS space are dual to light-front supersymmetric quantum-mechanical bound-state equations in physical space-time. The specific breaking of conformal invariance explains hadronic properties common to light mesons and baryons, such as the observed mass pattern in the radial and orbital excitations, from the spectrum generating algebra. Lastly, the holographic embedding in AdS also explains distinctive and systematic features, suchmore » as the spin-J degeneracy for states with the same orbital angular momentum, observed in the light-baryon spectrum.« less

  4. Derivation of quantum mechanics from the Boltzmann equation for the Planch aether

    SciTech Connect (OSTI)

    Winterberg, F.

    1995-10-01

    The Planck aether hypothesis assumes that space is densely filled with an equal number of locally interacting positive and negative Planck masses obeying an exactly nonrelativistic law of motion. The Planck masses can be described by a quantum mechanical two-component nonrelativistic operator field equation having the form of a two-component nonlinear Schroedinger equation, with a spectrum of quasiparticles obeying Lorentz invariance as a dynamic symmetry for energies small compared to the Planck energy. We show that quantum mechanics itself can be derived from the Newtonian mechanics of the Planck aether as an approximate solution of Boltzmann`s equation for the locally interacting positive and negative Planck masses, and that the validity of the nonrelativistic Schroedinger equation depends on Lorentz invariance as a dynamic symmetry. We also show how the many-body Schroedinger wave function can be factorized into a product of quasiparticles of the Planck aether with separable quantum potentials. Finally, we present a possible explanation of wave function collapse as a kind of enhanced gravitational collapse in the presence of the negative Planck masses.

  5. General N=2 supersymmetric quantum mechanical model: Supervariable approach to its off-shell nilpotent symmetries

    SciTech Connect (OSTI)

    Krishna, S.; Shukla, A.; Malik, R.P.

    2014-12-15

    Using the supersymmetric (SUSY) invariant restrictions on the (anti-)chiral supervariables, we derive the off-shell nilpotent symmetries of the general one (0+1)-dimensional N=2 SUSY quantum mechanical (QM) model which is considered on a (1, 2)-dimensional supermanifold (parametrized by a bosonic variable t and a pair of Grassmannian variables θ and θ-bar with θ{sup 2}=(θ-bar){sup 2}=0,θ(θ-bar)+(θ-bar)θ=0). We provide the geometrical meanings to the two SUSY transformations of our present theory which are valid for any arbitrary type of superpotential. We express the conserved charges and Lagrangian of the theory in terms of the supervariables (that are obtained after the application of SUSY invariant restrictions) and provide the geometrical interpretation for the nilpotency property and SUSY invariance of the Lagrangian for the general N=2 SUSY quantum theory. We also comment on the mathematical interpretation of the above symmetry transformations. - Highlights: • A novel method has been proposed for the derivation of N=2 SUSY transformations. • General N=2 SUSY quantum mechanical (QM) model with a general superpotential, is considered. • The above SUSY QM model is generalized onto a (1, 2)-dimensional supermanifold. • SUSY invariant restrictions are imposed on the (anti-)chiral supervariables. • Geometrical meaning of the nilpotency property is provided.

  6. Michael McDowell

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

    Publicatons Contact Us Ring Status Current Schedule Michael W. McDowell Argonne National Laboratory 9700 S. Cass Ave 431E006 Argonne, IL 60439 Phone: 252-6422 Fax: 252-7392...

  7. McPhD

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

    is a research code designed to explore the applications of the Haskell programming language to Monte Carlo algorithms. June 29, 2013 software McPhD is a research code designed...

  8. Retrocausal Effects as a Consequence of Quantum Mechanics Refined to Accommodate the Principle of Sufficient Reason

    SciTech Connect (OSTI)

    Stapp, Henry P.

    2011-05-10

    The principle of sufficient reason asserts that anything that happens does so for a reason: no definite state of affairs can come into being unless there is a sufficient reason why that particular thing should happen. This principle is usually attributed to Leibniz, although the first recorded Western philosopher to use it was Anaximander of Miletus. The demand that nature be rational, in the sense that it be compatible with the principle of sufficient reason, conflicts with a basic feature of contemporary orthodox physical theory, namely the notion that nature's response to the probing action of an observer is determined by pure chance, and hence on the basis of absolutely no reason at all. This appeal to pure chance can be deemed to have no rational fundamental place in reason-based Western science. It is argued here, on the basis of the other basic principles of quantum physics, that in a world that conforms to the principle of sufficient reason, the usual quantum statistical rules will naturally emerge at the pragmatic level, in cases where the reason behind nature's choice of response is unknown, but that the usual statistics can become biased in an empirically manifest way when the reason for the choice is empirically identifiable. It is shown here that if the statistical laws of quantum mechanics were to be biased in this way then the basically forward-in-time unfolding of empirical reality described by orthodox quantum mechanics would generate the appearances of backward-time-effects of the kind that have been reported in the scientific literature.

  9. Scattering mechanisms in shallow undoped Si/SiGe quantum wells

    SciTech Connect (OSTI)

    Laroche, D.; Nielsen, E.; Lu, T. M.; Huang, S.-H.; Chuang, Y.; Li, J.-Y. Liu, C. W.

    2015-10-15

    We report the magneto-transport study and scattering mechanism analysis of a series of increasingly shallow Si/SiGe quantum wells with depth ranging from ∼ 100 nm to ∼ 10 nm away from the heterostructure surface. The peak mobility increases with depth, suggesting that charge centers near the oxide/semiconductor interface are the dominant scattering source. The power-law exponent of the electron mobility versus density curve, μ ∝ n{sup α}, is extracted as a function of the depth of the Si quantum well. At intermediate densities, the power-law dependence is characterized by α ∼ 2.3. At the highest achievable densities in the quantum wells buried at intermediate depth, an exponent α ∼ 5 is observed. We propose and show by simulations that this increase in the mobility dependence on the density can be explained by a non-equilibrium model where trapped electrons smooth out the potential landscape seen by the two-dimensional electron gas.

  10. Scattering mechanisms in shallow undoped Si/SiGe quantum wells

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

    Laroche, Dominique; Huang, S. -H.; Nielsen, Erik; Chuang, Y.; Li, J. -Y.; Liu, C. W.; Lu, Tzu -Ming

    2015-10-07

    We report the magneto-transport study and scattering mechanism analysis of a series of increasingly shallow Si/SiGe quantum wells with depth ranging from ~ 100 nm to ~ 10 nm away from the heterostructure surface. The peak mobility increases with depth, suggesting that charge centers near the oxide/semiconductor interface are the dominant scattering source. The power-law exponent of the electron mobility versus density curve, μ ∝ nα, is extracted as a function of the depth of the Si quantum well. At intermediate densities, the power-law dependence is characterized by α ~ 2.3. At the highest achievable densities in the quantum wellsmore » buried at intermediate depth, an exponent α ~ 5 is observed. Lastly, we propose and show by simulations that this increase in the mobility dependence on the density can be explained by a non-equilibrium model where trapped electrons smooth out the potential landscape seen by the two-dimensional electron gas.« less

  11. Scattering mechanisms in shallow undoped Si/SiGe quantum wells

    SciTech Connect (OSTI)

    Laroche, Dominique; Huang, S. -H.; Nielsen, Erik; Chuang, Y.; Li, J. -Y.; Liu, C. W.; Lu, Tzu -Ming

    2015-10-07

    We report the magneto-transport study and scattering mechanism analysis of a series of increasingly shallow Si/SiGe quantum wells with depth ranging from ~ 100 nm to ~ 10 nm away from the heterostructure surface. The peak mobility increases with depth, suggesting that charge centers near the oxide/semiconductor interface are the dominant scattering source. The power-law exponent of the electron mobility versus density curve, μ ∝ nα, is extracted as a function of the depth of the Si quantum well. At intermediate densities, the power-law dependence is characterized by α ~ 2.3. At the highest achievable densities in the quantum wells buried at intermediate depth, an exponent α ~ 5 is observed. Lastly, we propose and show by simulations that this increase in the mobility dependence on the density can be explained by a non-equilibrium model where trapped electrons smooth out the potential landscape seen by the two-dimensional electron gas.

  12. Quantum mechanical force field for hydrogen fluoride with explicit electronic polarization

    SciTech Connect (OSTI)

    Mazack, Michael J. M.; Gao, Jiali

    2014-05-28

    The explicit polarization (X-Pol) theory is a fragment-based quantum chemical method that explicitly models the internal electronic polarization and intermolecular interactions of a chemical system. X-Pol theory provides a framework to construct a quantum mechanical force field, which we have extended to liquid hydrogen fluoride (HF) in this work. The parameterization, called XPHF, is built upon the same formalism introduced for the XP3P model of liquid water, which is based on the polarized molecular orbital (PMO) semiempirical quantum chemistry method and the dipole-preserving polarization consistent point charge model. We introduce a fluorine parameter set for PMO, and find good agreement for various gas-phase results of small HF clusters compared to experiments and ab initio calculations at the M06-2X/MG3S level of theory. In addition, the XPHF model shows reasonable agreement with experiments for a variety of structural and thermodynamic properties in the liquid state, including radial distribution functions, interaction energies, diffusion coefficients, and densities at various state points.

  13. Unified theory of exactly and quasiexactly solvable ''discrete'' quantum mechanics. I. Formalism

    SciTech Connect (OSTI)

    Odake, Satoru [Department of Physics, Shinshu University, Matsumoto 390-8621 (Japan); Sasaki, Ryu [Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)

    2010-08-15

    We present a simple recipe to construct exactly and quasiexactly solvable Hamiltonians in one-dimensional ''discrete'' quantum mechanics, in which the Schroedinger equation is a difference equation. It reproduces all the known ones whose eigenfunctions consist of the Askey scheme of hypergeometric orthogonal polynomials of a continuous or a discrete variable. The recipe also predicts several new ones. An essential role is played by the sinusoidal coordinate, which generates the closure relation and the Askey-Wilson algebra together with the Hamiltonian. The relationship between the closure relation and the Askey-Wilson algebra is clarified.

  14. Nonlinear quantum-mechanical system associated with Sine-Gordon equation in (1 + 2) dimensions

    SciTech Connect (OSTI)

    Zarmi, Yair

    2014-10-15

    Despite the fact that it is not integrable, the (1 + 2)-dimensional Sine-Gordon equation has N-soliton solutions, whose velocities are lower than the speed of light (c = 1), for all N ≥ 1. Based on these solutions, a quantum-mechanical system is constructed over a Fock space of particles. The coordinate of each particle is an angle around the unit circle. U, a nonlinear functional of the particle number-operators, which obeys the Sine-Gordon equation in (1 + 2) dimensions, is constructed. Its eigenvalues on N-particle states in the Fock space are the slower-than-light, N-soliton solutions of the equation. A projection operator (a nonlinear functional of U), which vanishes on the single-particle subspace, is a mass-density generator. Its eigenvalues on multi-particle states play the role of the mass density of structures that emulate free, spatially extended, relativistic particles. The simplicity of the quantum-mechanical system allows for the incorporation of perturbations with particle interactions, which have the capacity to “annihilate” and “create” solitons – an effect that does not have an analog in perturbed classical nonlinear evolution equations.

  15. Quantum mechanical approaches to in silico enzyme characterization and drug design

    SciTech Connect (OSTI)

    Nilmeier, J P; Fattebert, J L; Jacobson, M P; Kalyanaraman, C

    2012-01-17

    The astonishing, exponentially increasing rates of genome sequencing has led to one of the most significant challenges for the biological and computational sciences in the 21st century: assigning the likely functions of the encoded proteins. Enzymes represent a particular challenge, and a critical one, because the universe of enzymes is likely to contain many novel functions that may be useful for synthetic biology, or as drug targets. Current approaches to protein annotation are largely based on bioinformatics. At the simplest level, this annotation involves transferring the annotations of characterized enzymes to related sequences. In practice, however, there is no simple, sequence based criterion for transferring annotations, and bioinformatics alone cannot propose new enzymatic functions. Structure-based computational methods have the potential to address these limitations, by identifying potential substrates of enzymes, as we and others have shown. One successful approach has used in silico 'docking' methods, more commonly applied in structure-based drug design, to identify possible metabolite substrates. A major limitation of this approach is that it only considers substrate binding, and does not directly assess the potential of the enzyme to catalyze a particular reaction using a particular substrate. That is, substrate binding affinity is necessary but not sufficient to assign function. A reaction profile is ultimately what is needed for a more complete quantitative description of function. To address this rather fundamental limitation, they propose to use quantum mechanical methods to explicitly compute transition state barriers that govern the rates of catalysis. Although quantum mechanical, and mixed quantum/classical (QM/MM), methods have been used extensively to investigate enzymatic reactions, the focus has been primarily on elucidating complex reaction mechanisms. Here, the key catalytic steps are known, and they use these methods quantify substrate

  16. Molecular Quantum Mechanics 2010: From Methylene to DNA and Beyond Conference Support

    SciTech Connect (OSTI)

    2013-05-15

    This grant was $12500 for partial support of an international conference, Molecular Quantum Mechanics 2010, which was held on the campus of the University of California, Berkeley, from 24 to 29 May 2010. The conference involved more than 250 participants. The conference schedule ran from as early as 8:00 AM to as late as 10:30 PM at night, in order to accommodate six historical lectures, 16 plenary lectures, 42 invited talks and two very strong poster sessions containing 143 contributed posters. Since 1989, the Molecular Quantum Mechanics (MQM) series of international conferences has show- cased the frontiers of research in quantum chemistry with a strong focus on basic theory and algorithms, as well as highlights of topical applications. Both were strongly in evidence at MQM 2010. At the same time as embracing the future, the MQM conferences also honour the lifetime contributions of some of the most prominent scientists in the field of theoretical and computational quantum chemistry. MQM 2010 recognised the work of Prof. Henry F. ‘Fritz’ Schaefer of the Center for Computational Chemistry at the University of Georgia, who was previously on the faculty at Berkeley The travel of invited speakers was partially covered by sponsorships from Dell Computer, Hewlett-Packard, Journal of Chemical Theory and Computation, Virginia Tech College of Science, Molecular Physics, Q-Chem Inc and the American Institute of Physics. By contrast, the conference grant from the Department of Energy was used to provide fellowships and scholarships to enable graduate students and postdoctoral fellows to attend the meeting, and thereby broaden the participation of young scientists at a meeting where in the past most of the attendees have been more senior faculty researchers. We believe that we were very successful in this regard: 118 students and postdocs attended out of the total of 256 participants. In detail, the DOE sponsorship money was partially used for dormitory scholarships that

  17. Solutions to position-dependent mass quantum mechanics for a new class of hyperbolic potentials

    SciTech Connect (OSTI)

    Christiansen, H. R.; Grupo de Fsica Terica, State University of Ceara , Av. Paranjana 1700, 60740-903 Fortaleza-CE ; Cunha, M. S.

    2013-12-15

    We analytically solve the position-dependent mass (PDM) 1D Schrdinger equation for a new class of hyperbolic potentials V{sub q}{sup p}(x)=?V{sub 0}(sinh{sup p}x/cosh{sup q}x),?p=?2,0,?q?[see C. A. Downing, J. Math. Phys. 54, 072101 (2013)] among several hyperbolic single- and double-wells. For a solitonic mass distribution, m(x)=m{sub 0}?sech{sup 2}(x), we obtain exact analytic solutions to the resulting differential equations. For several members of the class, the quantum mechanical problems map into confluent Heun differential equations. The PDM Poschl-Teller potential is considered and exactly solved as a particular case.

  18. A quantum mechanical model for the relationship between stock price and stock ownership

    SciTech Connect (OSTI)

    Cotfas, Liviu-Adrian

    2012-11-01

    The trade of a fixed stock can be regarded as the basic process that measures its momentary price. The stock price is exactly known only at the time of sale when the stock is between traders, that is, only in the case when the owner is unknown. We show that the stock price can be better described by a function indicating at any moment of time the probabilities for the possible values of price if a transaction takes place. This more general description contains partial information on the stock price, but it also contains partial information on the stock owner. By following the analogy with quantum mechanics, we assume that the time evolution of the function describing the stock price can be described by a Schroedinger type equation.

  19. Natural star-products on symplectic manifolds and related quantum mechanical operators

    SciTech Connect (OSTI)

    B?aszak, Maciej Doma?ski, Ziemowit

    2014-05-15

    In this paper is considered a problem of defining natural star-products on symplectic manifolds, admissible for quantization of classical Hamiltonian systems. First, a construction of a star-product on a cotangent bundle to an Euclidean configuration space is given with the use of a sequence of pair-wise commuting vector fields. The connection with a covariant representation of such a star-product is also presented. Then, an extension of the construction to symplectic manifolds over flat and non-flat pseudo-Riemannian configuration spaces is discussed. Finally, a coordinate free construction of related quantum mechanical operators from Hilbert space over respective configuration space is presented. -- Highlights: Invariant representations of natural star-products on symplectic manifolds are considered. Star-products induced by flat and non-flat connections are investigated. Operator representations in Hilbert space of considered star-algebras are constructed.

  20. Bound states for multiple Dirac-? wells in space-fractional quantum mechanics

    SciTech Connect (OSTI)

    Tare, Jeffrey D. Esguerra, Jose Perico H.

    2014-01-15

    Using the momentum-space approach, we obtain bound states for multiple Dirac-? wells in the framework of space-fractional quantum mechanics. Introducing first an attractive Dirac-comb potential, i.e., Dirac comb with strength ?g (g > 0), in the space-fractional Schrdinger equation we show that the problem of obtaining eigenenergies of a system with N Dirac-? wells can be reduced to a problem of obtaining the eigenvalues of an N N matrix. As an illustration we use the present matrix formulation to derive expressions satisfied by the bound-state energies of N = 1, 2, 3 delta wells. We also obtain the corresponding wave functions and express them in terms of Fox's H-function.

  1. Multiscale modeling of beryllium: quantum mechanics and laser-driven shock experiments using novel diagnostics.

    SciTech Connect (OSTI)

    Swift, D. C.; Paisley, Dennis L.; Kyrala, George A.; Hauer, Allan

    2002-01-01

    Ab initio quantum mechanics was used to construct a thermodynamically complete and rigorous equation of state for beryllium in the hexagonal and body-centred cubic structures, and to predict elastic constants as a function of compression. The equation of state agreed well with Hugoniot data and previously-published equations of state, but the temperatures were significantly different. The hexagonal/bcc phase boundary agreed reasonably well with published data, suggesting that the temperatures in our new equation of state were accurate. Shock waves were induced in single crystals and polycrystalline foils of beryllium, by direct illumination using the TRIDENT laser at Los Alamos. The velocity history at the surface of the sample was measured using a line-imaging VISAR, and transient X-ray diffraction (TXD) records were obtained with a plasma backlighter and X-ray streak cameras. The VISAR records exhibited elastic precursors, plastic waves, phase changes and spall. Dual TXD records were taken, in Bragg and Laue orientations. The Bragg lines moved in response to compression in the uniaxial direction. Because direct laser drive was used, the results had to be interpreted with the aid of radiation hydrodynamics simulations to predict the loading history for each laser pulse. In the experiments where there was evidence of polymorphism in the VISAR record, additional lines appeared in the Bragg and Laue records. The corresponding pressures were consistent with the phase boundary predicted by the quantum mechanical equation of state for beryllium. A model of the response of a single crystal of beryllium to shock loading is being developed using these new theoretical and experimental results. This model will be used in meso-scale studies of the response of the microstructure, allowing us to develop a more accurate representation of the behaviour of polycrystalline beryllium.

  2. A quantitative quantum-chemical analysis tool for the distribution of mechanical force in molecules

    SciTech Connect (OSTI)

    Stauch, Tim; Dreuw, Andreas

    2014-04-07

    The promising field of mechanochemistry suffers from a general lack of understanding of the distribution and propagation of force in a stretched molecule, which limits its applicability up to the present day. In this article, we introduce the JEDI (Judgement of Energy DIstribution) analysis, which is the first quantum chemical method that provides a quantitative understanding of the distribution of mechanical stress energy among all degrees of freedom in a molecule. The method is carried out on the basis of static or dynamic calculations under the influence of an external force and makes use of a Hessian matrix in redundant internal coordinates (bond lengths, bond angles, and dihedral angles), so that all relevant degrees of freedom of a molecule are included and mechanochemical processes can be interpreted in a chemically intuitive way. The JEDI method is characterized by its modest computational effort, with the calculation of the Hessian being the rate-determining step, and delivers, except for the harmonic approximation, exact ab initio results. We apply the JEDI analysis to several example molecules in both static quantum chemical calculations and Born-Oppenheimer Molecular Dynamics simulations in which molecules are subject to an external force, thus studying not only the distribution and the propagation of strain in mechanically deformed systems, but also gaining valuable insights into the mechanochemically induced isomerization of trans-3,4-dimethylcyclobutene to trans,trans-2,4-hexadiene. The JEDI analysis can potentially be used in the discussion of sonochemical reactions, molecular motors, mechanophores, and photoswitches as well as in the development of molecular force probes.

  3. McDonough_OLC

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

    Details the progression of nanodiamond as it is transformed into OLC. The surface is initially graphitized, followed by a disordered phase at moderate temperatures, and finally complete transformation at the highest temperatures.[5] FIRST Center Research Perspective: Onion-like carbons, their formation, properties, and performance John McDonough, Vadym Mochalin, Volker Presser, Katie Van Aken, Yury Gogotsi Drexel University Alexandra Navrotsky UC Davis Panchapakesan Ganesh, Paul Kent Oak Ridge

  4. Tom McQuiston- Biography

    Broader source: Energy.gov [DOE]

    Tom McQuiston is a doctor of public health specializing in occupational health, safety and environment issues.

  5. Charging/discharging behavior and mechanism of silicon quantum dots embedded in amorphous silicon carbide films

    SciTech Connect (OSTI)

    Wen, Xixing; Zeng, Xiangbin Zheng, Wenjun; Liao, Wugang; Feng, Feng

    2015-01-14

    The charging/discharging behavior of Si quantum dots (QDs) embedded in amorphous silicon carbide (a-SiC{sub x}) was investigated based on the Al/insulating layer/Si QDs embedded in a-SiC{sub x}/SiO{sub 2}/p-Si (metal-insulator-quantum dots-oxide-silicon) multilayer structure by capacitance-voltage (C-V) and conductance-voltage (G-V) measurements. Transmission electron microscopy and Raman scattering spectroscopy measurements reveal the microstructure and distribution of Si QDs. The occurrence and shift of conductance peaks indicate the carrier transfer and the charging/discharging behavior of Si QDs. The multilayer structure shows a large memory window of 5.2 eV at ±8 V sweeping voltage. Analysis of the C-V and G-V results allows a quantification of the Coulomb charging energy and the trapped charge density associated with the charging/discharging behavior. It is found that the memory window is related to the size effect, and Si QDs with large size or low Coulomb charging energy can trap two or more electrons by changing the charging voltage. Meanwhile, the estimated lower potential barrier height between Si QD and a-SiC{sub x}, and the lower Coulomb charging energy of Si QDs could enhance the charging and discharging effect of Si QDs and lead to an enlarged memory window. Further studies of the charging/discharging mechanism of Si QDs embedded in a-SiC{sub x} can promote the application of Si QDs in low-power consumption semiconductor memory devices.

  6. Hap McSween

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

    Asteroid Exploration by the Dawn Spacecraft Hap McSween University of Tennessee July 8, 2015 4:00 p.m. (coffee @ 3:30) The Dawn spacecraft, with its novel ion propulsion system, has completed its exploration of Vesta and is now in orbit around Ceres. Vesta (~500 km diameter) is a rocky body with a large metallic core, an ultramafic mantle, and a basaltic crust. Large impacts have excavated samples which occur as meteorites, used to calibrate Dawn instruments and improve interpretations. The

  7. Elastic tunneling charge transport mechanisms in silicon quantum dots /SiO{sub 2} thin films and superlattices

    SciTech Connect (OSTI)

    Illera, S. Prades, J. D.; Cirera, A.

    2015-05-07

    The role of different charge transport mechanisms in Si/SiO{sub 2} structures has been studied. A theoretical model based on the Transfer Hamiltonian Formalism has been developed to explain experimental current trends in terms of three different elastic tunneling processes: (1) trap assisted tunneling; (2) transport through an intermediate quantum dot; and (3) direct tunneling between leads. In general, at low fields carrier transport is dominated by the quantum dots whereas, for moderate and high fields, transport through deep traps inherent to the SiO{sub 2} is the most relevant process. Besides, current trends in Si/SiO{sub 2} superlattice structure have been properly reproduced.

  8. Employee Spotlight: Laura McClellan

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

    helping people in extreme poverty. August 23, 2016 Laura McClellan Laura McClellan Laura McClellan Laura McClellan "For people in extreme poverty, the first thing that helps is ...

  9. Hybrid Quantum Mechanics/Molecular Mechanics-Based Molecular Dynamics Simulation of Acid-Catalyzed Dehydration of Polyols in Liquid Water

    SciTech Connect (OSTI)

    Caratzoulas, Stavros; Courtney, Timothy; Vlachos, Dionisios G.

    2011-01-01

    We use the conversion of protonated glycerol to acrolein for a case study of the mechanism of acid-catalyzed dehydration of polyols in aqueous environments. We employ hybrid Quamtum Mechanics/Molecular Mechanics Molecular Dynamics (QM/MM MD) simulations with biased sampling and perform free energy calculations for the elementary steps of the reaction. We investigate the effects of solvent dynamics and in particular the role of quantum mechanical water in the dehydration mechanism. We present results supporting a mechanism that proceeds via water-mediated proton transfers and thus through an enol intermediate. We find that the first dehydration may take place by two, low-energy pathways requiring, respectively, 20.9 and 18.8 kcal/mol of activation free energy. The second dehydration requires 19.9 kcal/mol of activation free energy while for the overall reaction we compute a free energy change of -8 kcal/mol.

  10. Quantum Process Matrix Computation by Monte Carlo

    Energy Science and Technology Software Center (OSTI)

    2012-09-11

    The software package, processMC, is a python script that allows for the rapid modeling of small , noisy quantum systems and the computation of the averaged quantum evolution map.

  11. Properties of the Katugampola fractional derivative with potential application in quantum mechanics

    SciTech Connect (OSTI)

    Anderson, Douglas R.; Ulness, Darin J.

    2015-06-15

    Katugampola [e-print http://arxiv.org/abs/1410.6535 ] recently introduced a limit based fractional derivative, D{sup α} (referred to in this work as the Katugampola fractional derivative) that maintains many of the familiar properties of standard derivatives such as the product, quotient, and chain rules. Typically, fractional derivatives are handled using an integral representation and, as such, are non-local in character. The current work starts with a key property of the Katugampola fractional derivative, D{sup α}[y]=t{sup 1−α}(dy)/(dt) , and the associated differential operator, D{sup α} = t{sup 1−α}D{sup 1}. These operators, their inverses, commutators, anti-commutators, and several important differential equations are studied. The anti-commutator serves as a basis for the development of a self-adjoint operator which could potentially be useful in quantum mechanics. A Hamiltonian is constructed from this operator and applied to the particle in a box model.

  12. Edwin M. McMillan

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

    Edwin M. McMillan About the Lab Our Vision Lab Leadership History Nobelists Visit Navigate Section About the Lab Our Vision Lab Leadership History Nobelists Visit mcmillan...

  13. Exact and approximate dynamics of the quantum mechanical O(N...

    Office of Scientific and Technical Information (OSTI)

    conditions consistent with O(N) symmetry, one of them a quantum roll, the other a wave packet initially to one side of the potential minimum, whose center has all coordinates...

  14. Entropic dynamics: From entropy and information geometry to Hamiltonians and quantum mechanics

    SciTech Connect (OSTI)

    Caticha, Ariel; Bartolomeo, Daniel; Reginatto, Marcel

    2015-01-13

    Entropic Dynamics is a framework in which quantum theory is derived as an application of entropic methods of inference. There is no underlying action principle. Instead, the dynamics is driven by entropy subject to the appropriate constraints. In this paper we show how a Hamiltonian dynamics arises as a type of non-dissipative entropic dynamics. We also show that the particular form of the 'quantum potential' that leads to the Schrdinger equation follows naturally from information geometry.

  15. Quantum memristors

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

    Pfeiffer, P.; Egusquiza, I. L.; Di Ventra, M.; Sanz, M.; Solano, E.

    2016-07-06

    Technology based on memristors, resistors with memory whose resistance depends on the history of the crossing charges, has lately enhanced the classical paradigm of computation with neuromorphic architectures. However, in contrast to the known quantized models of passive circuit elements, such as inductors, capacitors or resistors, the design and realization of a quantum memristor is still missing. Here, we introduce the concept of a quantum memristor as a quantum dissipative device, whose decoherence mechanism is controlled by a continuous-measurement feedback scheme, which accounts for the memory. Indeed, we provide numerical simulations showing that memory effects actually persist in the quantummore » regime. Our quantization method, specifically designed for superconducting circuits, may be extended to other quantum platforms, allowing for memristor-type constructions in different quantum technologies. As a result, the proposed quantum memristor is then a building block for neuromorphic quantum computation and quantum simulations of non-Markovian systems.« less

  16. Short-time asymptotics of a rigorous path integral for N = 1 supersymmetric quantum mechanics on a Riemannian manifold

    SciTech Connect (OSTI)

    Fine, Dana S.; Sawin, Stephen

    2014-06-15

    Following Feynman's prescription for constructing a path integral representation of the propagator of a quantum theory, a short-time approximation to the propagator for imaginary-time, N = 1 supersymmetric quantum mechanics on a compact, even-dimensional Riemannian manifold is constructed. The path integral is interpreted as the limit of products, determined by a partition of a finite time interval, of this approximate propagator. The limit under refinements of the partition is shown to converge uniformly to the heat kernel for the Laplace-de Rham operator on forms. A version of the steepest descent approximation to the path integral is obtained, and shown to give the expected short-time behavior of the supertrace of the heat kernel.

  17. Quantum Mechanical Calculations of Charge Effects on gating the KcsA channel

    SciTech Connect (OSTI)

    Kariev, Alisher M.; Znamenskiy, Vasiliy S.; Green, Michael E.

    2007-02-06

    The research described in this product was performed in part in the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory. A series of ab initio (density functional) calculations were carried out on side chains of a set of amino acids, plus water, from the (intracellular) gating region of the KcsA K+ channel. Their atomic coordinates, except hydrogen, are known from X-ray structures [D.A. Doyle, J.M. Cabral, R.A. Pfuetzner, A. Kuo, J.M. Gulbis, S.L. Cohen, B.T. Chait, R. MacKinnon, The structure of the potassium channel: molecular basis of K+ conduction and selectivity, Science 280 (1998) 6977; R. MacKinnon, S.L. Cohen, A. Kuo, A. Lee, B.T. Chait, Structural conservation in prokaryotic and eukaryotic potassium channels, Science 280 (1998) 106109; Y. Jiang, A. Lee, J. Chen, M. Cadene, B.T. Chait, R. MacKinnon, The open pore conformation of potassium channels. Nature 417 (2001) 523526], as are the coordinates of some water oxygen atoms. The 1k4c structure is used for the starting coordinates. Quantum mechanical optimization, in spite of the starting configuration, places the atoms in positions much closer to the 1j95, more tightly closed, configuration. This state shows four water molecules forming a basket under the Q119 side chains, blocking the channel. When a hydrated K+ approaches this basket, the optimized system shows a strong set of hydrogen bonds with the K+ at defined positions, preventing further approach of the K+ to the basket. This optimized structure with hydrated K+ added shows an ice-like 12 molecule nanocrystal of water. If the water molecules exchange, unless they do it as a group, the channel will remain blocked. The basket itself appears to be very stable, although it is possible that the K+ with its hydrating water molecules may be more mobile, capable of withdrawing from

  18. John McDonald- Biography

    Broader source: Energy.gov [DOE]

    Mr. McDonald has more than 34 years of nuclear related experience with DOE contractors at the Hanford site, commercial nuclear power industry at multiple facilities, and served as an officer in the US Navy submarine program.

  19. Steven T. McMaster

    Broader source: Energy.gov [DOE]

    Mr. McMaster joined the DOE Office of Technology Transitions in March 2015. Prior to then he had been the director of Technology Deployment at the Idaho National Laboratory (INL) since 2010. At INL...

  20. Kimberly A. McLaughlin

    Broader source: Energy.gov [DOE]

    Kim McLaughlin is a Lead Small Business Specialist with Office of Small and Disadvantaged Business Utilization.Prior to joining the U.S. Department of Energy, Kim was with the U.S. Department of...

  1. Mark A. McCall

    Broader source: Energy.gov [DOE]

    [[{"type":"media","view_mode":"media_large","fid":"964941","attributes":{"alt":"Mark McCall_Headshot_August 2015.jpg","class":"media-image caption","height":"480","style":"width: 384px; height:...

  2. zeller-MC-session.ppt

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

    NuInt09, path forward session 1 Some Thoughts on MC Convergence * first, would like to define what I mean * two kinds of convergence ... - "convergence" = experiments all working towards using same MC generator (common basis for comparison) - "convergence" = experimentalists & theorists working together to converge on best theoretical description of σ ν * the two are obviously related, will focus on the latter Sam Zeller, NuInt09, path forward session 2 Current

  3. Microsoft PowerPoint - 9 Chris McKenney

    Office of Environmental Management (EM)

    Christepher Christepher McKenney McKenney McKenney McKenney, , , , Christopher Grossman, Christopher Grossman, Christopher Grossman, Christopher Grossman, George Alexander,...

  4. Quantum mechanical calculation of electric fields and vibrational Stark shifts at active site of human aldose reductase

    SciTech Connect (OSTI)

    Wang, Xianwei; Zhang, John Z. H.; He, Xiao

    2015-11-14

    Recent advance in biophysics has made it possible to directly measure site-specific electric field at internal sites of proteins using molecular probes with C = O or C≡N groups in the context of vibrational Stark effect. These measurements directly probe changes of electric field at specific protein sites due to, e.g., mutation and are very useful in protein design. Computational simulation of the Stark effect based on force fields such as AMBER and OPLS, while providing good insight, shows large errors in comparison to experimental measurement due to inherent difficulties associated with point charge based representation of force fields. In this study, quantum mechanical calculation of protein’s internal electrostatic properties and vibrational Stark shifts was carried out by using electrostatically embedded generalized molecular fractionation with conjugate caps method. Quantum calculated change of mutation-induced electric field and vibrational Stark shift is reported at the internal probing site of enzyme human aldose reductase. The quantum result is in much better agreement with experimental data than those predicted by force fields, underscoring the deficiency of traditional point charge models describing intra-protein electrostatic properties.

  5. Molecular quantum mechanical gradients within the polarizable embedding approach—Application to the internal vibrational Stark shift of acetophenone

    SciTech Connect (OSTI)

    List, Nanna Holmgaard Jensen, Hans Jørgen Aagaard; Kongsted, Jacob; Beerepoot, Maarten T. P.; Gao, Bin; Ruud, Kenneth; Olsen, Jógvan Magnus Haugaard

    2015-01-21

    We present an implementation of analytical quantum mechanical molecular gradients within the polarizable embedding (PE) model to allow for efficient geometry optimizations and vibrational analysis of molecules embedded in large, geometrically frozen environments. We consider a variational ansatz for the quantum region, covering (multiconfigurational) self-consistent-field and Kohn–Sham density functional theory. As the first application of the implementation, we consider the internal vibrational Stark effect of the C=O group of acetophenone in different solvents and derive its vibrational linear Stark tuning rate using harmonic frequencies calculated from analytical gradients and computed local electric fields. Comparisons to PE calculations employing an enlarged quantum region as well as to a non-polarizable embedding scheme show that the inclusion of mutual polarization between acetophenone and water is essential in order to capture the structural modifications and the associated frequency shifts observed in water. For more apolar solvents, a proper description of dispersion and exchange–repulsion becomes increasingly important, and the quality of the optimized structures relies to a larger extent on the quality of the Lennard-Jones parameters.

  6. Charles McConnell | Department of Energy

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

    Charles McConnell About Us Charles McConnell - Former Assistant Secretary for Fossil Energy Charles McConnell Charles McConnell is the former Assistant Secretary for Fossil Energy. Most Recent Adding "Utilization" to Carbon Capture and Storage May 1

  7. Bob McQuinn- Biography

    Broader source: Energy.gov [DOE]

    Bob McQuinn is Vice President of Performance Assurance for URS. Bob is a Chemical Engineer and has been managing the nuclear chemical separation plants in the DOE complex since 1978. He has managed facilities at Savannah River, Hanford, and most recently was Associate Director of Nuclear and High Hazard Operations at LANL.

  8. Frank McCoy- Biography

    Office of Energy Efficiency and Renewable Energy (EERE)

    Frank McCoy is Senior Vice President for Nuclear Safety with URS Professional Solutions, where he personally provides management support and independent assessment services for URS involved nuclear projects, laboratories, and operations at almost every site in the DOE complex and at international sites in the UK and Canada.

  9. Kenneth W. McLeod | Savannah River Ecology Laboratory

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

    McLeod Faculty & Scientists SREL Home Kenneth W. McLeod Savannah River Ecology Laboratory P O Drawer E, Aiken, SC 29802 (803) 725-5309 office (803) 725-3309 fax kwmcleod(at)srel.uga.edu As a plant ecophysiologist, I am interested in the unique mechanisms that allow plant species to inhabit marginal habitats and which contributes to their individual distribution patterns, from large-scale continental patterns to patterns of individual trees in a forest. The elucidation of these mechanisms has

  10. Ordering mechanism of stacked CdSe/ZnS{sub x}Se{sub 1-x} quantum dots: A combined reciprocal-space and real-space approach

    SciTech Connect (OSTI)

    Schmidt, Th.; Roventa, E.; Clausen, T.; Flege, J. I.; Alexe, G.; Rosenauer, A.; Hommel, D.; Falta, J.; Bernstorff, S.; Kuebel, C.

    2005-11-15

    The vertical and lateral ordering of stacked CdSe quantum dot layers embedded in ZnS{sub x}Se{sub 1-x} has been investigated by means of grazing incidence small angle x-ray scattering and transmission electron microscopy. Different growth parameters have been varied in order to elucidate the mechanisms leading to quantum dot correlation. From the results obtained for different numbers of quantum dot layers, we conclude on a self-organized process which leads to increasing ordering for progressive stacking. The dependence on the spacer layer thickness indicates that strain induced by lattice mismatch drives the ordering process, which starts to break down for too thick spacer layers in a thickness range from 45 to 80 A. Typical quantum dot distances in a range from about 110 to 160 A have been found. A pronounced anisotropy of the quantum dot correlation has been observed, with the strongest ordering along the [110] direction. Since an increased ordering is found with increasing growth temperature, the formation of stacking faults as an additional mechanism for quantum dot alignment can be ruled out.

  11. T-688: McAfee Security Bulletin - McAfee SaaS Endpoint Protection...

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

    Security Bulletin - McAfee SaaS Endpoint Protection update fixes multiple ActiveX issues T-688: McAfee Security Bulletin - McAfee SaaS Endpoint Protection update fixes multiple...

  12. Scaling of volume to surface ratio and doubling time in growing unicellular organisms: Do cells appear quantum-mechanical systems?

    SciTech Connect (OSTI)

    Atanasov, Atanas Todorov

    2014-10-06

    The scaling of physical and biological characteristics of the living organisms is a basic method for searching of new biophysical laws. In series of previous studies the author showed that in Poikilotherms, Mammals and Aves, the volume to surface ratio VS{sup ?1} (m) of organisms is proportional to their generation time T{sub gt}(s) via growth rate v (m s{sup ?1}): VS{sup ?1}?=?v{sub gr}T{sup r}. The power and the correlation coefficients are near to 1.0. Aim of this study is: i) to prove with experimental data the validity of the above equation for Unicellular organisms and ii) to show that perhaps, the cells are quantum-mechanical systems. The data for body mass M (kg), density ? (kg/m{sup 3}), minimum and maximum doubling time T{sub dt} (s) for 50 unicellular organisms are assembled from scientific sources, and the computer program Statistics is used for calculations. In result i) the analytical relationship from type: VS{sup ?1}?=?4.46?10{sup ?11}T{sub dt} was found, where v{sub gr}?=?4.4610{sup ?11} m/s and ii) it is shown that the products between cell mass M, cell length expressed by V/S ratio and growth rate v{sub gr} satisfied the Heisenberg uncertainty principle i.e. the inequalities V/SMv{sub gr}>h/2? and T{sub dt}Mv{sub gr}{sup 2}>h/2? are valid, where h= 6.62610{sup ?34} J?s is the Planck constant. This rise the question: do cells appear quantum-mechanical systems?.

  13. MC4523 Sealed Cap: Component & characteristics development report

    SciTech Connect (OSTI)

    Begeal, D.R.

    1997-03-01

    The MC4523 Sealed Cap is a WW42C1 Percussion Primer that is pressed into a steel cylinder. Hermaticity of the input end is then provided by welding a thin steel closure disk on the input end of the MC4523. Thus, the user is provided with a component that is prequalified in terms of ignition sensitivity and hermeticity. The first customer is the Thermal Battery Department (1522). The MC4523 will be used on the MC2736A Thermal Battery which in turn will be used on the W78 JTA. Attachment of the MC4523 to the battery is with a laser weld. Combined test results of four production lots at a commercial supplier (PPI, TMS, WR1, and WR2) show an all-fire ignition sensitivity (.999 @ 50%) of approximately 60 millijoules of mechanical energy with a 2.2 gram firing pin. The firing pin had an impact tip with a radius of 0.020 inch. This firing pin is like that to be used in the W78 JTA application. Approximately 112 millijoules of mechanical energy will be supplied in the application, thus the design margin is more than adequate.

  14. MC Appliance: Order (2014-CE-20002)

    Broader source: Energy.gov [DOE]

    DOE ordered MC Appliance Corporation to pay a $16,000 civil penalty after finding MC Appliance had failed to certify that certain models of residential clothes washers and residential clothes dryers comply with the applicable energy conservation standards.

  15. McCup | Open Energy Information

    Open Energy Info (EERE)

    search Name: McCup Place: Sofia, Bulgaria Zip: 1680 Sector: Renewable Energy, Solar, Wind energy Product: String representation "McCUP is an inv ... Energy Society." is too...

  16. Andrea McMakin | Department of Energy

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

    Andrea McMakin About Us Andrea McMakin - Communications Manager, Pacific Northwest National Laboratory Most Recent Top 10 Things You Didn't Know About Pacific Northwest National Laboratory February 2

  17. NREL: Energy Analysis - Kevin McCabe

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

    Kevin McCabe Photo of Kevin McCabe. Kevin McCabe is a member of the Technology Systems and Sustainability Analysis Group in the Strategic Energy Analysis Center. Engineer II On staff since June 2016 Phone number: 303-275-3183 E-mail: Kevin.McCabe@nrel.gov Areas of expertise Geothermal direct use (thermal applications) Reservoir modeling/simulation, well testing Data analysis and visualization Primary research interests Geothermal resource assessment New technologies for geothermal industry (EGS,

  18. Edward McGinnis | Department of Energy

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

    Edward McGinnis About Us Edward McGinnis - Deputy Assistant Secretary, International Nuclear Energy Policy and Cooperation Edward McGinnis Mr. McGinnis is responsible for the Department of Energy's international civilian nuclear energy activities, including international nuclear energy research, development and demonstration cooperation, international framework and partnership development, international nuclear energy policy, and other international civilian nuclear energy-related activities

  19. Amanda McAlpin | Department of Energy

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

    Amanda McAlpin Amanda McAlpin Amanda McAlpin Amanda McAlpin works for New West Technologies supporting the Vehicle Technologies Program at the U.S. Department of Energy. Most Recent Go for the Gold and Save Energy at Home August 15 Cool Ways to Save Energy July 19 Save a Little Energy this 4th of July July 2

  20. James D. McMillan | Bioenergy | NREL

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

    James D. McMillan James D. McMillan Separations Development and Applications Task Leader, Chief Engineer Jim.McMillan@nrel.gov | 303-384-6861 Research Interests James D. McMillan works to advance lignocellulose and algal biorefining science and technology. His primary research and development focus is on lignocellulosic biomass conversion process technology development, integration, and scale up. He has more than 25 years of research experience on biochemical and sugar platform approaches to

  1. Caroline McGregor | Department of Energy

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

    Caroline McGregor About Us Caroline McGregor - Policy Analyst, Office of International Affairs Most Recent by Caroline McGregor C3E Spotlights Women Leaders in Clean Energy Careers September 16 U.S. C3E Ambassadors Meet for Annual Retreat July 28 Nominations Now Open: Mid-Career Women in Clean Energy Awards April 15

  2. Crystal McDonald | Department of Energy

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

    Crystal McDonald About Us Crystal McDonald - Project Officer, Department of Energy. Crystal McDonald is a Project Officer at the Department of Energy. Most Recent Small Towns Achieve Big Savings with Lighting Upgrades August 28 A Former "Most Wanted" Building Gets a Reprieve March 1

  3. Chelsea McIntosh | Center for Bio-Inspired Solar Fuel Production

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

    McIntosh Graduate student

  4. Full quantum mechanical analysis of atomic three-grating Mach–Zehnder interferometry

    SciTech Connect (OSTI)

    Sanz, A.S.; Davidović, M.; Božić, M.

    2015-02-15

    Atomic three-grating Mach–Zehnder interferometry constitutes an important tool to probe fundamental aspects of the quantum theory. There is, however, a remarkable gap in the literature between the oversimplified models and robust numerical simulations considered to describe the corresponding experiments. Consequently, the former usually lead to paradoxical scenarios, such as the wave–particle dual behavior of atoms, while the latter make difficult the data analysis in simple terms. Here these issues are tackled by means of a simple grating working model consisting of evenly-spaced Gaussian slits. As is shown, this model suffices to explore and explain such experiments both analytically and numerically, giving a good account of the full atomic journey inside the interferometer, and hence contributing to make less mystic the physics involved. More specifically, it provides a clear and unambiguous picture of the wavefront splitting that takes place inside the interferometer, illustrating how the momentum along each emerging diffraction order is well defined even though the wave function itself still displays a rather complex shape. To this end, the local transverse momentum is also introduced in this context as a reliable analytical tool. The splitting, apart from being a key issue to understand atomic Mach–Zehnder interferometry, also demonstrates at a fundamental level how wave and particle aspects are always present in the experiment, without incurring in any contradiction or interpretive paradox. On the other hand, at a practical level, the generality and versatility of the model and methodology presented, makes them suitable to attack analogous problems in a simple manner after a convenient tuning. - Highlights: • A simple model is proposed to analyze experiments based on atomic Mach–Zehnder interferometry. • The model can be easily handled both analytically and computationally. • A theoretical analysis based on the combination of the position and

  5. Gina McCarthy | Department of Energy

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

    Gina McCarthy About Us Gina McCarthy - Administrator of the U.S. Environmental Protection Agency Gina McCarthy Gina McCarthy is the Administrator of the U.S. Environmental Protection Agency. Appointed by President Obama in 2009 as Assistant Administrator for EPA's Office of Air and Radiation, Gina McCarthy has been a leading advocate for common-sense strategies to protect public health and the environment. Most Recent A "Cool" Way to Combat Climate Change under the Montreal Protocol

  6. Jerri McTaggart-Creating educational opportunities

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

    Jerri McTaggart Jerri McTaggart-Creating opportunities She is a scientist at the Los Alamos office in Carlsbad and helps small-quantity transuranic waste generators identify and solve problems. March 26, 2014 Jerri McTaggart Jerri McTaggart "She advises, don't get sidetracked by life: make a college degree a priority. Creating Educational Opportunities As a single mother, Jerri McTaggart pushed through 72 hours per week at her job, studying at nights to obtain her Master's degree in

  7. Sandia Energy - Stephanie L. Teich-McGoldrick

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

    Stephanie L. Teich-McGoldrick Home Stephanie L. Teich-McGoldrick Stephanie L. Teich-McGoldrick Department: Geochemistry StephanieTeichMcGoldrickoriginal-48a0b3609e01227f98e5c8bacf...

  8. Cluster-continuum quantum mechanical models to guide the choice of anions for Li{sup +}-conducting ionomers

    SciTech Connect (OSTI)

    Shiau, Huai-Suen; Janik, Michael J.; Liu, Wenjuan; Colby, Ralph H.

    2013-11-28

    A quantum-mechanical investigation on Li poly(ethylene oxide)-based ionomers was performed in the cluster-continuum solvation model (CCM) that includes specific solvation in the first shell surrounding the cation, all surrounded by a polarizable continuum. A four-state model, including a free Li cation, Li{sup +}-anion pair, triple ion, and quadrupole was used to represent the states of Li{sup +} within the ionomer in the CCM. The relative energy of each state was calculated for Li{sup +} with various anions, with dimethyl ether representing the ether oxygen solvation. The population distribution of Li{sup +} ions among states was estimated by applying Boltzmann statistics to the CCM energies. Entropy difference estimates are needed for populations to better match the true ionomer system. The total entropy change is considered to consist of four contributions: translational, rotational, electrostatic, and solvent immobilization entropies. The population of ion states is reported as a function of Bjerrum length divided by ion-pair separation with/without entropy considered to investigate the transition between states. Predicted concentrations of Li{sup +}-conducting states (free Li{sup +} and positive triple ions) are compared among a series of anions to indicate favorable features for design of an optimal Li{sup +}-conducting ionomer; the perfluorotetraphenylborate anion maximizes the conducting positive triple ion population among the series of anions considered.

  9. MC and A instrumentation catalog

    SciTech Connect (OSTI)

    Neymotin, L.; Sviridova, V.

    1998-06-01

    In 1981 and 1985, two editions of a catalog of non-destructive nuclear measurement instrumentation, and material control and surveillance equipment, were published by Brookhaven National Laboratory (BNL). The last edition of the catalog included one hundred and twenty-five entries covering a wide range of devices developed in the US and abroad. More than ten years have elapsed since the publication of the more recent Catalog. Devices described in it have undergone significant modifications, and new devices have been developed. Therefore, in order to assist specialists in the field of Material Control and Accounting (MC and A), a new catalog has been created. Work on this instrumentation catalog started in 1997 as a cooperative effort of Brookhaven National Laboratory (BNL), operated by Brookhaven Science Associates under contract to the US Department of Energy, and the All-Russian Research Institute of Automatics (VNIIA), subordinate institute of the Atomic Energy Ministry of the Russian Federation, within the collaborative US-Russia Material Protection, Control, and Accounting (MPC and A) Program. Most of the equipment included in the Catalog are non-destructive assay (NDA) measurement devices employed for purposes of accounting, confirmation, and verification of nuclear materials. Other devices also included in the Catalog are employed in the detection and deterrence of unauthorized access to or removal of nuclear materials (material control: containment and surveillance). Equipment found in the Catalog comprises either: (1) complete devices or systems that can be used for MC and A applications; or (2) parts or components of complete systems, such as multi-channel analyzers, detectors, neutron generators, and software. All devices are categorized by their status of development--from prototype to serial production.

  10. Matthew McMillen | Department of Energy

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

    Matthew McMillen About Us Matthew McMillen - Director of Environmental Compliance, LPO final14424web.jpg Matthew McMillen serves as the Director of Environmental Compliance for the Department of Energy's Loan Programs Office and brings over 28 years of experience in environmental impact analysis and program management to the Program. In addition to this role, he serves as the National Environmental Policy Act (NEPA) Compliance Officer for the Program where he oversees the Program's NEPA review

  11. Microsoft Word - McFarlane-SA.doc

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

    Liquid Water Cloud Retrievals - A Bayesian Approach S. A. McFarlane and K. F. Evans University of Colorado Boulder, Colorado A. S. Ackerman National Aeronautics and Space ...

  12. ARM - MC3E Planning - Data Plots

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

    govField CampaignsMidlatitude Continental Convective Clouds Experiment (MC3E)Data Plots Related Links MC3E Home News News & Press MC3E Backgrounder (PDF, 1.61MB) SGP Images ARM flickr site Field Blog ARM Data Discovery Browse Data Deployment Operations Measurements Science Plan (PDF, 3.85 MB) Featured Data Plots SGP Data Plots (all) Experiment Planning Steering Committee Science Questions MC3E Proposal Abstract and Related Campaigns Meetings Cloud Life Cycle Working Group Contacts Michael

  13. PATRICK W. (PAT) McGUIRE ASSISTANT ...

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

    beginning where he held a variety of engineering and management positions related to reactor refueling operations aboard naval nuclear submarines. Mr. McGuire's professional...

  14. Sheila Grady-McBride | Bioenergy | NREL

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

    Sheila Grady-McBride Sheila Grady-McBride Business Support II, Administrative Associate Sheila.Grady-Mcbride@nrel.gov | 303-384-6220 Areas of Expertise Sheila Grady-McBride joined the National Bioenergy Center at the end of June 2012 as a research support assistant supporting the Thermochemical Group. Prior to joining the National Renewable Energy Laboratory (NREL), Grady-McBride most recently worked at The Beck Group as a project assistant. Before that she worked for 12 years at GE Access as an

  15. MC&A | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    to develop a principle-based standard for Material Control and Accountability (MC&A) Programs. The objective of SFPI was to prepare a modelstandard for developing, implementing, ...

  16. Thomas McDonald | Center for Gas SeparationsRelevant to Clean...

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

    ... The Mechanism of Carbon Dioxide Adsorption in an Alkylamine-Functionalized Metal-Organic Framework, J. Am. Chem Soc., 135, 7402-7405 (2013). 10.1021ja4004766 McDonald, Thomas ...

  17. THE MC AND A COUNCIL AT SSC RF - IPPE AS A COORDINATING BODY FOR SYSTEM SUSTAINABILITY.

    SciTech Connect (OSTI)

    FISHBONE,L.VALENTE,J.HANLEY,T.HIRSCHI,E.J.RUSS,P.SCHERER-KATZ,C.

    2004-07-18

    The State Scientific Center of the Russian Federation--Institute of Physics and Power Engineering's (SSC RF-IPPE) practice of nuclear material control and accounting (MC&A) has undergone significant changes during the period of cooperation with U.S. national laboratories from 1995 to the present. These changes corresponded with general changes of the Russian system of state control and accounting of nuclear materials resulting from the new Concept of the System for State Regulating and Control of Nuclear Materials (1996) and further regulatory documents, which were developed and implemented to take into account international experience in the MC&A [1]. During the upgrades phase of Russian-U.S. cooperation, an MC&A laboratory was specially created within the SSC RF IPPE for the purpose of guiding the creation of the upgraded MC&A system, coordinating the activities of all units involved in the creation of this system, and implementing a unified technical policy during the transition period. After five years of operation of the MC&A laboratory and the implementation of new components for the upgraded MC&A system, it was decided that a greater degree of attention must be paid to the MC&A system's operation in addition to the coordination activities carried out by the MC&A laboratory. To meet this need, an organization for operation of the nuclear material (NM) control and accounting system was created as part of the Division of NM Transportation and Storage. It was also recognized that a new mechanism was required for effective coordination of MC&A activities in IPPE, including the implementation of a unified MC&A policy in methodological, technical and practical areas. This mechanism should allow the IPPE management to gain an objective evaluation of the MC&A system status and provide leading specialists with objective recommendations on maintenance of MC&A system and on basic directions for further improvements. Preliminary discussions indicated that such a

  18. Relativistic Quantum Scars

    SciTech Connect (OSTI)

    Huang, Liang; Lai Yingcheng; Ferry, David K.; Goodnick, Stephen M.; Akis, Richard

    2009-07-31

    The concentrations of wave functions about classical periodic orbits, or quantum scars, are a fundamental phenomenon in physics. An open question is whether scarring can occur in relativistic quantum systems. To address this question, we investigate confinements made of graphene whose classical dynamics are chaotic and find unequivocal evidence of relativistic quantum scars. The scarred states can lead to strong conductance fluctuations in the corresponding open quantum dots via the mechanism of resonant transmission.

  19. MC Appliance: Order (2012-CE-1508)

    Broader source: Energy.gov [DOE]

    DOE ordered CNA International Inc. d/b/a MC Appliance Corporation to pay a $8,000 civil penalty after finding MC Appliance had failed to certify that certain models of room air conditioners comply with the applicable energy conservation standards.

  20. Quantum histories without contrary inferences

    SciTech Connect (OSTI)

    Losada, Marcelo; Laura, Roberto

    2014-12-15

    In the consistent histories formulation of quantum theory it was shown that it is possible to retrodict contrary properties. We show that this problem do not appear in our formalism of generalized contexts for quantum histories. - Highlights: We prove ordinary quantum mechanics has no contrary properties. Contrary properties in consistent histories are reviewed. We prove generalized contexts for quantum histories have no contrary properties.

  1. Quantum Foam

    SciTech Connect (OSTI)

    Lincoln, Don

    2014-10-24

    The laws of quantum mechanics and relativity are quite perplexing however it is when the two theories are merged that things get really confusing. This combined theory predicts that empty space isnt empty at all its a seething and bubbling cauldron of matter and antimatter particles springing into existence before disappearing back into nothingness. Scientists call this complicated state of affairs quantum foam. In this video, Fermilabs Dr. Don Lincoln discusses this mind-bending idea and sketches some of the experiments that have convinced scientists that this crazy prediction is actually true.

  2. G. McNeilus Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    G. McNeilus Wind Farm Jump to: navigation, search Name G. McNeilus Wind Farm Facility G. McNeilus Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status...

  3. McNeilus Wind Farm I | Open Energy Information

    Open Energy Info (EERE)

    McNeilus Wind Farm I Jump to: navigation, search Name McNeilus Wind Farm I Facility McNeilus Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  4. Viking-McBain Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    to: navigation, search Name Viking-McBain Biomass Facility Facility Viking-McBain Sector Biomass Owner Suez Renewable Energy NA Location McBain, Michigan Coordinates 44.1936227,...

  5. McNeil Biomass Power | Open Energy Information

    Open Energy Info (EERE)

    McNeil Biomass Power Jump to: navigation, search Name: McNeil Biomass Power Place: Burlington, VT Website: www.mcneilbiomasspower.com References: McNeil Biomass Power1...

  6. McGraw Hill Construction | Open Energy Information

    Open Energy Info (EERE)

    McGraw Hill Construction Jump to: navigation, search Name: McGraw Hill Construction Place: New York, NY Website: www.mcgrawhillconstruction.com References: McGraw Hill...

  7. J C McNeil Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    C McNeil Biomass Facility Jump to: navigation, search Name J C McNeil Biomass Facility Facility J C McNeil Sector Biomass Location Chittenden County, Vermont Coordinates...

  8. NREL: Photovoltaics Research - Bill McMahon, Ph.D.

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

    Bill McMahon, Ph.D. Senior Scientist 303-384-6578 Bill.McMahon@nrel.gov Dr. Bill McMahon received a bachelor's degree in engineering physics from the Colorado School of Mines in...

  9. MC Appliance: Proposed Penalty (2014-CE-20002)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that MC Appliance Corporation failed to certify residential clothes washers and residential clothes dryers as compliant with the applicable energy conservation standards.

  10. AMF Deployment, McMurdo Station, Antarctica

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

    suite of instruments will be transported from McMurdo to the West Antarctic Ice Sheet (WAIS) for an intensive operational period of 56 days between November 2015 and January 2016....

  11. ODD NUCLEI (Schunck, Stoitsov, Nazarewicz, Mc

    Office of Scientific and Technical Information (OSTI)

    ... 60. Kawai-Kerman-McVoy Statistical Theory of Nuclear Reactions, G. Arbanas, CNR-2007, Fish Camp, CA, October 22-26, 2007. 61. Local density functional theory for superfluid ...

  12. ODD NUCLEI (Schunck, Stoitsov, Nazarewicz, Mc

    Office of Scientific and Technical Information (OSTI)

    ... 60. Kawai-Kerman-McVoy Statistical Theory o f Nuclear Reactions, G. Arbanas, CNR-2007, Fish Camp, CA, October 22-26, 2007. 61. Local density functional theory fo r ...

  13. Joseph A. McBrearty- Biography

    Office of Energy Efficiency and Renewable Energy (EERE)

    Joseph McBrearty joined the Office of Science in August 2010 immediately upon retiring from a 30-year career in the U.S. Navy, where he specialized in nuclear propulsion and nuclear weapons systems, training, control and safety.

  14. MC Appliance: Proposed Penalty (2012-CE-1508)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that CNA International Inc. d/b/a MC Appliance Corporation failed to certify a variety of room air conditioners as compliant with the applicable energy conservation standards.

  15. Faces of Science: Nate McDowell

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

    August, 23 2016 - From shoring up floors to building a brand-new home in southern Africa, Laura McClellan spends much of her free time helping people in extreme poverty. Melissa ...

  16. Edwin Mattison McMillan - Patents

    Office of Scientific and Technical Information (OSTI)

    US 2,933,442 ELECTRONUCLEAR REACTOR - McMillan, E. M.; Lawrence, E. O.; Alvarez, L. W.; April 19, 1960 (to U.S. Atomic Energy Commission) An electronuclear reactor is described in ...

  17. MC&A in a Radiochemical Plant

    SciTech Connect (OSTI)

    Crawford, J.M.

    1998-10-30

    MC&A in reprocessing plant in the United States is based on solution measurements of the dissolved fuel assemblies, periodic inventories, and solution measurement of product and waste streams.

  18. McCabe Geothermal Facility | Open Energy Information

    Open Energy Info (EERE)

    General Information Name McCabe Geothermal Facility Facility McCabe Sector Geothermal energy Location Information Location The Geysers, California Coordinates 38.80548694467,...

  19. McLean County, Illinois: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Zone Subtype A. Registered Energy Companies in McLean County, Illinois State Farm Insurance Places in McLean County, Illinois Anchor, Illinois Arrowsmith, Illinois Bellflower,...

  20. Voluntary Protection Program Onsite Review, Burns & McDonnell...

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

    Burns & McDonnell - Facility Engineering Services, LLC - September 2015 Voluntary Protection Program Onsite Review, Burns & McDonnell - Facility Engineering Services, LLC - ...

  1. Quantum optics. Gravity meets quantum physics

    SciTech Connect (OSTI)

    Adams, Bernhard W.

    2015-02-27

    Albert Einstein’s general theory of relativity is a classical formulation but a quantum mechanical description of gravitational forces is needed, not only to investigate the coupling of classical and quantum systems but simply to give a more complete description of our physical surroundings. In this issue of Nature Photonics, Wen-Te Liao and Sven Ahrens reveal a link between quantum and gravitational physics. They propose that in the quantum-optical effect of superradiance, the world line of electromagnetic radiation is changed by the presence of a gravitational field.

  2. Proposed mechanism to represent the suppression of dark current density by four orders with low energy light ion (H{sup ?}) implantation in quaternary alloy-capped InAs/GaAs quantum dot infrared photodetectors

    SciTech Connect (OSTI)

    Mandal, A.; Ghadi, H.; Mathur, K.L.; Basu, A.; Subrahmanyam, N.B.V.; Singh, P.; Chakrabarti, S.

    2013-08-01

    Graphical abstract: - Abstract: Here we propose a carrier transport mechanism for low energy H{sup ?} ions implanted InAs/GaAs quantum dot infrared photodetectors supportive of the experimental results obtained. Dark current density suppression of up to four orders was observed in the implanted quantum dot infrared photodetectors, which further demonstrates that they are effectively operational. We concentrated on determining how defect-related material and structural changes attributed to implantation helped in dark current density reduction for InAs/GaAs quantum dot infrared photodetectors. This is the first study to report the electrical carrier transport mechanism of H{sup ?} ion-implanted InAs/GaAs quantum dot infrared photodetectors.

  3. Sandia National Laboratories: Quantum Systems

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

    Quantum Systems Sensors Sandia leverages quantum mechanics to enable exquisite metrology devices, such as inertial sensors and frequency standards that go beyond the capabilities of conventional methods Custom Solutions Quantum Sensing We are leveraging quantum mechanics to enable sensors that go beyond the capabilities of conventional methods. Using the quantized states of matter, it is possible to build exquisite metrology devices such as frequency standards and inertial sensors. Our efforts

  4. Fractional corresponding operator in quantum mechanics and applications: A uniform fractional Schrödinger equation in form and fractional quantization methods

    SciTech Connect (OSTI)

    Zhang, Xiao; Wei, Chaozhen; Liu, Yingming; Luo, Maokang

    2014-11-15

    In this paper we use Dirac function to construct a fractional operator called fractional corresponding operator, which is the general form of momentum corresponding operator. Then we give a judging theorem for this operator and with this judging theorem we prove that R–L, G–L, Caputo, Riesz fractional derivative operator and fractional derivative operator based on generalized functions, which are the most popular ones, coincide with the fractional corresponding operator. As a typical application, we use the fractional corresponding operator to construct a new fractional quantization scheme and then derive a uniform fractional Schrödinger equation in form. Additionally, we find that the five forms of fractional Schrödinger equation belong to the particular cases. As another main result of this paper, we use fractional corresponding operator to generalize fractional quantization scheme by using Lévy path integral and use it to derive the corresponding general form of fractional Schrödinger equation, which consequently proves that these two quantization schemes are equivalent. Meanwhile, relations between the theory in fractional quantum mechanics and that in classic quantum mechanics are also discussed. As a physical example, we consider a particle in an infinite potential well. We give its wave functions and energy spectrums in two ways and find that both results are the same.

  5. Mary A. McIntyre | Argonne National Laboratory

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

    A. McIntyre Communications and Information Lead (Interim) - EGS E-mail mmcintyre

  6. McICA_update_v2.cdr

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

    Monte Carlo Independent Column Approximation (McICA): Up and Running in North America and Europe H. W. Barker J. N. S. Cole J.-J. Morcrette R. Pincus P. Räisänen MSC UBC ECMWF NOAA-UC FMI Monte Carlo Independent Column Approximation (McICA): Up and Running in North America and Europe H. W. Barker J. N. S. Cole J.-J. Morcrette R. Pincus P. Räisänen MSC UBC ECMWF NOAA-UC FMI Funding Announcement (spring 2007): "The goal of the ARM program is ... to improve the representation of clouds and

  7. Employee Spotlight: Laura McClellan

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

    Laura McClellan August 23, 2016 Lending a helping hammer Under a soaring blue African sky, Laura McClellan of the Manager of Functions division office (MOF-DO) stood with other Habitat for Humanity volunteers in a line like a bucket brigade, passing along cement blocks to the skilled local masons raising the walls of a new house. When she could spare a moment, Laura would soak up the view of backcountry Lesotho, a nation landlocked by South Africa. Mesas and canyons stretched into the distance

  8. Emission mechanisms in Al-rich AlGaN/AlN quantum wells assessed by excitation power dependent photoluminescence spectroscopy

    SciTech Connect (OSTI)

    Iwata, Yoshiya; Banal, Ryan G.; Ichikawa, Shuhei; Funato, Mitsuru; Kawakami, Yoichi

    2015-02-21

    The optical properties of Al-rich AlGaN/AlN quantum wells are assessed by excitation-power-dependent time-integrated (TI) and time-resolved (TR) photoluminescence (PL) measurements. Two excitation sources, an optical parametric oscillator and the 4th harmonics of a Ti:sapphire laser, realize a wide range of excited carrier densities between 10{sup 12} and 10{sup 21 }cm{sup −3}. The emission mechanisms change from an exciton to an electron-hole plasma as the excitation power increases. Accordingly, the PL decay time is drastically reduced, and the integrated PL intensities increase in the following order: linearly, super-linearly, linearly again, and sub-linearly. The observed results are well accounted for by rate equations that consider the saturation effect of non-radiative recombination processes. Using both TIPL and TRPL measurements allows the density of non-radiative recombination centers, the internal quantum efficiency, and the radiative recombination coefficient to be reliably extracted.

  9. 07-NIF Dedication: Jerry McNerney

    ScienceCinema (OSTI)

    Congressman Jerry McNerney

    2010-09-01

    The National Ignition Facility, the world's largest laser system, was dedicated at a ceremony on May 29, 2009 at Lawrence Livermore National Laboratory. These are the remarks by Congressman Jerry McNerney, of California's 11th district, which adjoins Livermore.

  10. McElroy grows longwall production safely

    SciTech Connect (OSTI)

    Fiscor, S.

    2009-05-15

    One of America's leading underground coal mines has successfully transitions to a two-panel mine. A second longwall face way installed by CONSOL Energy at the McElroy mine south of Moundsville, W.Va. as part of a $200 m upgrade some five years ago. The article describes this installation and the current operations. 3 photos.

  11. James J. McConnell- Biography

    Broader source: Energy.gov [DOE]

    Mr. McConnell is the Deputy Associate Administrator for Infrastructure and Operations. He is responsible for operations, infrastructure, capital planning, environmental programs and packaging and transportation for the NNSA National Security Enterprise as well as management and oversight of NNSA's seven field offices.

  12. Quantum Institute

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

    Quantum Institute Quantum Institute A new research frontier awaits! Our door is open and we thrive on mutually beneficial partnerships, collaborations that drive innovations and new technologies. Contact Leader Malcolm Boshier (505) 665-8892 Email Two of LANL's most successful quantum technology initiatives: quantum cryptography and the race for quantum computer The area of quantum information, science, and technology is rapidly evolving, with important applications in the areas of quantum

  13. Irving Pressley McPhail | Department of Energy

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

    Irving Pressley McPhail About Us Irving Pressley McPhail, Ph.D. - President, National Action Council for Minorities in Engineering Irving Pressley McPhail Dr. Irving Pressley McPhail is the sixth president and Chief Executive Officer of the National Action Council for Minorities in Engineering, Inc. (NACME). He joined NACME in 2007 as executive vice president and Chief Operating Officer. Dr. McPhail founded and served as principal of The McPhail Group LLC. He also served 15 years as a college

  14. capture quantum correlations Qasimi, Asma Al-; James, Daniel...

    Office of Scientific and Technical Information (OSTI)

    University of Toronto, Toronto, Ontario M5S 1A7 (Canada) 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALGORITHMS; CAPTURE; ENTROPY; MIXED STATES; PURE STATES; QUANTUM...

  15. Universal Entanglement Entropy in 2D Conformal Quantum Critical...

    Office of Scientific and Technical Information (OSTI)

    Country of Publication: United States Language: English Subject: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CONFORMAL GROUPS; DIMERS; ENTROPY; WAVE FUNCTIONS; QUANTUM ...

  16. Spin filtering in a double quantum dot device: Numerical renormalizati...

    Office of Scientific and Technical Information (OSTI)

    Country of Publication: United States Language: English Subject: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; MATHEMATICAL MODELS; MATHEMATICAL SOLUTIONS; QUANTUM DOTS; ...

  17. Observation of a Macroscopically Quantum-Entangled Insulator

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

    A New Form of Macroscopic Quantum Weirdness One of the strangest consequences of quantum mechanics is the possibility of seemingly instantaneous communication between...

  18. North Carolina Nuclear Profile - McGuire

    U.S. Energy Information Administration (EIA) Indexed Site

    McGuire" "Unit","Summer capacity (mw)","Net generation (thousand mwh)","Summer capacity factor (percent)","Type","Commercial operation date","License expiration date" 1,"1,100","8,836",91.7,"PWR","application/vnd.ms-excel","application/vnd.ms-excel"

  19. QER- Comment of Annie McCollum

    Broader source: Energy.gov [DOE]

    I urge you to take seriously scientific and community concerns about fracked gas and subsidizing infrastructure that supports its distribution. It is imperative that we fully fund efforts to build infrastructure and capacity for sustainable energy, not for more fossil fuels. The proposed pipeline expansion in New York and Massachusetts is short-sighted, unnecessary, and a step in the wrong direction. There are better ways to meet our energy needs. Annie McCollum

  20. McNeilus Wind Farm II | Open Energy Information

    Open Energy Info (EERE)

    Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner G. McNeilus Developer G. McNeilus Energy Purchaser Xcel Energy Location Mower County MN...

  1. McNeilus Wind Farm IV | Open Energy Information

    Open Energy Info (EERE)

    Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner G. McNeilus Developer G. McNeilus Energy Purchaser Xcel Energy Location Mower County MN...

  2. McNeilus Wind Farm III | Open Energy Information

    Open Energy Info (EERE)

    Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner G. McNeilus Developer G. McNeilus Energy Purchaser Dairyland Power Alliant Location Mower...

  3. McHenry County, North Dakota: Energy Resources | Open Energy...

    Open Energy Info (EERE)

    McHenry, North Dakota Towner, North Dakota Upham, North Dakota Velva, North Dakota Voltaire, North Dakota Retrieved from "http:en.openei.orgwindex.php?titleMcHenryCounty,...

  4. McDuffie County, Georgia: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Number 3 Climate Zone Subtype A. Places in McDuffie County, Georgia Dearing, Georgia Thomson, Georgia Retrieved from "http:en.openei.orgwindex.php?titleMcDuffieCounty,Geor...

  5. McCulloch County, Texas: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Climate Zone Number 3 Climate Zone Subtype B. Places in McCulloch County, Texas Brady, Texas Melvin, Texas Retrieved from "http:en.openei.orgwindex.php?titleMcCulloch...

  6. McDowell Research Ltd | Open Energy Information

    Open Energy Info (EERE)

    Research Ltd Jump to: navigation, search Name: McDowell Research Ltd Place: Waco, Texas Zip: 76701 Product: Established in 1992, McDowell designs and manufactures power solutions...

  7. From: Miller, William [mailto:wmiller@McCarter.com

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

    ... This email message from the law firm of McCarter & English, LLP is for the sole use of the ... This email message from the law firm of McCarter & English, LLP is for the sole use of the ...

  8. From: Miller, William [mailto:wmiller@McCarter.com

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

    ... Bud William T. Miller | Partner McCARTER & ENGLISH, LLP 1015 15th Street, NW, 12th Floor | ... message from the law firm of McCarter & English, LLP is for the sole use of the intended ...

  9. P. W. Terry, Cavendish McKay, and Eduardo Fernandez

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

    electron density in magnetic turbulence P. W. Terry, Cavendish McKay, and Eduardo ... P. W. Terry and Cavendish McKay Department of Physics, University of Wisconsin-Madison, ...

  10. McKinsey Carbon Supply Curves | Open Energy Information

    Open Energy Info (EERE)

    Carbon Supply Curves Jump to: navigation, search Tool Summary LAUNCH TOOL Name: McKinsey Carbon Supply Curves AgencyCompany Organization: McKinsey and Company Sector: Energy,...

  11. McCaysville, Georgia: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Act Smart Grid Projects in McCaysville, Georgia Tri State Electric Membership Corporation Smart Grid Project Utility Companies in McCaysville, Georgia Tri-State Electric Member...

  12. McGrath Light & Power Co | Open Energy Information

    Open Energy Info (EERE)

    McGrath Light & Power Co Jump to: navigation, search Name: McGrath Light & Power Co Place: Alaska Phone Number: 907-524-3009 Outage Hotline: 907-524-3009 References: EIA Form...

  13. McPherson County, South Dakota: Energy Resources | Open Energy...

    Open Energy Info (EERE)

    Subtype A. Places in McPherson County, South Dakota Central McPherson, South Dakota Eureka, South Dakota Hillsview, South Dakota Leola, South Dakota Long Lake, South Dakota West...

  14. McKinley Wind Park | Open Energy Information

    Open Energy Info (EERE)

    Wind Park Jump to: navigation, search Name McKinley Wind Park Facility McKinley Wind Park Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  15. McCormick Ranch Wind Park | Open Energy Information

    Open Energy Info (EERE)

    Ranch Wind Park Jump to: navigation, search Name: McCormick Ranch Wind Park Place: Montana Sector: Wind energy Product: 2,200 acre, 120 MW planned wind project on Larry McCormick's...

  16. The many partnerships at McKinley

    SciTech Connect (OSTI)

    Whitman, G.

    1996-12-31

    The McKinley Mine embarked on a path of partnership building with a diverse group of institutions and organizations about five years ago, without realizing it at the time. The partnerships now include a formal agreement with The Gallup/McKinley County School District, and a semi-formal agreement with the Forestry Department of the Navajo Nation. It is, of course, important to identify the goal and expected benefits of these partnerships. In some cases the benefits to the Company are tangible, and in some cases they are not. An example of a tangible benefit would be the partnership with the Navajo Nation where an economic benefit is derived by purchasing a high quality product (trees) at an attractive price. In this case there are tangible, mutual benefits since the Navajo Nation Forestry has a handy laboratory (McKinley) to test its product. The partnership with the US Navy can be classified as having intangible benefits. In this case, there is no measurable economic gain for the company, but something of considerable more potential for the country. These two partnerships are discussed in detail.

  17. ARM - Midlatitude Continental Convective Clouds Experiment (MC3E)

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

    Related Links MC3E Home News News & Press MC3E Backgrounder (PDF, 1.61MB) SGP Images ARM flickr site Field Blog ARM Data Discovery Browse Data Deployment Operations Measurements Science Plan (PDF, 3.85 MB) Featured Data Plots SGP Data Plots (all) Experiment Planning Steering Committee Science Questions MC3E Proposal Abstract and Related Campaigns Meetings Cloud Life Cycle Working Group Contacts Michael Jensen, Lead Scientist Midlatitude Continental Convective Clouds Experiment (MC3E) Thanks

  18. Arthur B. McDonald and Oscillating Neutrinos

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

    Arthur B. McDonald and Oscillating Neutrinos Resources with Additional Information Arthur B. McDonald Courtesy of Queen's University 'Queen's University professor emeritus Arthur McDonald is the co-winner of the 2015 Nobel Prize in physics. ... Dr. McDonald won the award, along with Takaaki Kajita of the University of Tokyo, "for their key contributions to the experiments which demonstrated that neutrinos change identities."... The findings solved a puzzle that physicists had wrestled

  19. Women @ Energy: Lee McGetrick | Department of Energy

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

    Lee McGetrick Women @ Energy: Lee McGetrick August 27, 2015 - 4:47pm Addthis Lee McGetrick is a nuclear infrastructure program manager at Oak Ridge National Laboratory. She attended the University of Tennessee in Knoxville, earning a bachelor of science degree in industrial engineering. Lee McGetrick is a nuclear infrastructure program manager at Oak Ridge National Laboratory. She attended the University of Tennessee in Knoxville, earning a bachelor of science degree in industrial engineering.

  20. Jefferson Lab Leadership Council - Robert D. McKeown

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

    Deputy Director for Science,Robert D. McKeown Robert D. McKeown Deputy Director for Science Robert D. McKeown has been the deputy director for science at Jefferson Lab since May 2010. He also serves as a Governor's Distinguished CEBAF Professor at The College of William and Mary. McKeown's research interests include studies of weak interactions in nuclei, neutrino oscillations, parity-violating electron scattering, and the electromagnetic structure of nuclei and nucleons. He first became

  1. Karen McNulty Walsh | Department of Energy

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

    Karen McNulty Walsh About Us Karen McNulty Walsh - Brookhaven National Laboratory Karen McNulty Walsh is a Principal Media and Communications Specialist at Brookhaven National Laboratory, one of the Department of Energy's 17 National Laboratories. Most Recent Building Better Batteries for Long-Distance Driving and Faster-Charging Electronics March 2

  2. Electric Vehicle Performance at McMurdo Station (Antarctica) and Comparison with McMurdo Station Conventional Vehicles

    SciTech Connect (OSTI)

    Sears, T.; Lammert, M.; Colby, K.; Walter, R.

    2014-09-01

    This report examines the performance of two electric vehicles (EVs) at McMurdo, Antarctica (McMurdo). The study examined the performance of two e-ride Industries EVs initially delivered to McMurdo on February 16, 2011, and compared their performance and fuel use with that of conventional vehicles that have a duty cycle similar to that of the EVs used at McMurdo.

  3. Quantum Locality?

    SciTech Connect (OSTI)

    Stapp, Henry

    2011-11-10

    Robert Griffiths has recently addressed, within the framework of a consistent quantum theory (CQT) that he has developed, the issue of whether, as is often claimed, quantum mechanics entails a need for faster-than-light transfers of information over long distances. He argues, on the basis of his examination of certain arguments that claim to demonstrate the existence of such nonlocal influences, that such influences do not exist. However, his examination was restricted mainly to hidden-variable-based arguments that include in their premises some essentially classical-physics-type assumptions that are fundamentally incompatible with the precepts of quantum physics. One cannot logically prove properties of a system by attributing to the system properties alien to that system. Hence Griffiths rejection of hidden-variable-based proofs is logically warranted. Griffiths mentions the existence of a certain alternative proof that does not involve hidden variables, and that uses only macroscopically described observable properties. He notes that he had examined in his book proofs of this general kind, and concluded that they provide no evidence for nonlocal influences. But he did not examine the particular proof that he cites. An examination of that particular proof by the method specified by his consistent quantum theory shows that the cited proof is valid within that restrictive framework. This necessary existence, within the consistent framework, of long range essentially instantaneous influences refutes the claim made by Griffiths that his consistent framework is superior to the orthodox quantum theory of von Neumann because it does not entail instantaneous influences. An added section responds to Griffiths reply, which cites a litany of ambiguities that seem to restrict, devastatingly, the scope of his CQT formalism, apparently to buttress his claim that my use of that formalism to validate the nonlocality theorem is flawed. But the vagaries that he cites do

  4. Quantum random number generation

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

    Ma, Xiongfeng; Yuan, Xiao; Cao, Zhu; Zhang, Zhen; Qi, Bing

    2016-06-28

    Here, quantum physics can be exploited to generate true random numbers, which play important roles in many applications, especially in cryptography. Genuine randomness from the measurement of a quantum system reveals the inherent nature of quantumness -- coherence, an important feature that differentiates quantum mechanics from classical physics. The generation of genuine randomness is generally considered impossible with only classical means. Based on the degree of trustworthiness on devices, quantum random number generators (QRNGs) can be grouped into three categories. The first category, practical QRNG, is built on fully trusted and calibrated devices and typically can generate randomness at amore » high speed by properly modeling the devices. The second category is self-testing QRNG, where verifiable randomness can be generated without trusting the actual implementation. The third category, semi-self-testing QRNG, is an intermediate category which provides a tradeoff between the trustworthiness on the device and the random number generation speed.« less

  5. Microsoft Word - McIntosh_abstract

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

    23 at 2:00 PM Binary and Ternary Break-up of Excited Projectile-like Fragments Produced in 124 Xe + 112,124 Sn Reactions at E/A = 50MeV. Alan McIntosh Indiana University Abstract: Peripheral reactions of 124 Xe ions with 112,124 Sn target nuclei were examined by measuring charged particles in a highly segmented silicon/CsI(Tl) array at forward angles together with the measurement of coincident neutrons. Charged particles were identified for Z≤54 and isotopically resolved for Z≤14. Of

  6. Ian McNulty | Argonne National Laboratory

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

    Ian McNulty Group Leader, X-Ray Microscopy Ph.D., Stony Brook University Nanomagnetic materials and ordering at phase transitions Coherent diffractive imaging and x-ray optics News Visualizing Redox Dynamics of a Single Ag/AgCl Heterogeneous Nanocatalyst at Atomic Resolution Butterfly Effects: X-rays reveal the photonic crystals in butterfly wings that create color X-rays reveal the photonic crystals in butterfly wings that create color Telephone 630.252.2882 Fax 630.252.5739 E-mail

  7. Unusual mechanism for H{sub 3}{sup +} formation from ethane as obtained by femtosecond laser pulse ionization and quantum chemical calculations

    SciTech Connect (OSTI)

    Kraus, Peter M.; Schwarzer, Martin C.; Schirmel, Nora; Urbasch, Gunter; Frenking, Gernot; Weitzel, Karl-Michael

    2011-03-21

    The formation of H{sub 3}{sup +} from saturated hydrocarbon molecules represents a prototype of a complex chemical process, involving the breaking and the making of chemical bonds. We present a combined theoretical and experimental investigation providing for the first time an understanding of the mechanism of H{sub 3}{sup +} formation at the molecular level. The experimental approach involves femtosecond laser pulse ionization of ethane leading to H{sub 3}{sup +} ions with kinetic energies on the order of 4 to 6.5 eV. The theoretical approach involves high-level quantum chemical calculation of the complete reaction path. The calculations confirm that the process takes place on the potential energy surface of the ethane dication. A surprising result of the theoretical investigation is, that the transition state of the process can be formally regarded as a H{sub 2} molecule attached to a C{sub 2}H{sub 4}{sup 2+} entity but IRC calculations show that it belongs to the reaction channel yielding C{sub 2}H{sub 3}{sup +}+ H{sub 3}{sup +}. Experimentally measured kinetic energies of the correlated H{sub 3}{sup +} and C{sub 2}H{sub 3}{sup +} ions confirm the reaction path suggested by theory.

  8. Communication: Practical and rigorous reduction of the many-electron quantum mechanical Coulomb problem to O(N{sup 2/3}) storage

    SciTech Connect (OSTI)

    Pederson, Mark R.

    2015-04-14

    It is tacitly accepted that, for practical basis sets consisting of N functions, solution of the two-electron Coulomb problem in quantum mechanics requires storage of O(N{sup 4}) integrals in the small N limit. For localized functions, in the large N limit, or for planewaves, due to closure, the storage can be reduced to O(N{sup 2}) integrals. Here, it is shown that the storage can be further reduced to O(N{sup 2/3}) for separable basis functions. A practical algorithm, that uses standard one-dimensional Gaussian-quadrature sums, is demonstrated. The resulting algorithm allows for the simultaneous storage, or fast reconstruction, of any two-electron Coulomb integral required for a many-electron calculation on processors with limited memory and disk space. For example, for calculations involving a basis of 9171 planewaves, the memory required to effectively store all Coulomb integrals decreases from 2.8 Gbytes to less than 2.4 Mbytes.

  9. MC1442 aging and compatibility studies

    SciTech Connect (OSTI)

    Massis, T.M.; Bradley, G.H. Jr.

    1983-12-01

    An aging and compatibility study has been conducted with the MC1442 thermal battery igniter to determine the effects of a hydrogen atmosphere on the energetic materials. Igniters were aged up to one (1) year at 70/sup 0/C in a 50/50 hydrogen/helium and also a pure helium atmosphere to simulate a 25-year aging environment at the normal thermal battery storage temperature. Functional testing with the igniter, including an all-fire Langley sensitivity format, function time and photographic flame profile measured no deviations from baseline samples. Analytical testing for changes in the energetic materials during aging measured less than 5% reaction of the nitrocellulose and no detectable reaction of the LMNR/KC10/sub 3/ ignition mixture. The hydrogen atmosphere reacted with the nitrocellulose at a rate greater than two times that observed for the helium-aged igniters. Since igniter performance was not affected by aging in hydrogen or helium, it was concluded that the MC1442 would function reliably in a thermal battery environment containing hydrogen.

  10. OSTIblog Posts by Linda McBrearty | OSTI, US Dept of Energy Office of

    Office of Scientific and Technical Information (OSTI)

    Scientific and Technical Information Linda McBrearty

  11. Meet CMI Researcher Tim McIntyre | Critical Materials Institute

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

    Tim McIntyre Meet CMI researcher Tim McIntyre of Oak Ridge National Laboratory. CMI Researcher Tim McIntyre leads the design and development of a low-cost, high-throughput magnet recycling system in focus area 3, improving reuse and recycling. Tim has 25 years experience in sensors and controls research covering areas such as fiber optics, optical spectrometers, ultra-precision actuators and measurement systems, wireless sensor networks and sensor design. He currently manages a research and

  12. McCoy Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    "","icon":"","group":"","inlineLabel":"","visitedicon":"" Hide Map Location County Churchill and Lander Counties, NM Geothermal Area McCoy Geothermal Area Geothermal Region...

  13. McKinstry Essention, Inc. ESCO Qualifcation Sheet

    Broader source: Energy.gov [DOE]

    Document outlines the energy service company (ESCO) qualifications sheet for McKinstry Essention, Inc., under the Department of Energy's (DOEs) energy savings performance contract (ESPC).

  14. DOE - Office of Legacy Management -- Kerr McGee - 028

    Office of Legacy Management (LM)

    Handled: Radiological Survey(s): Site Status: The Kerr McGee plant in Guthrie Oklahoma processed unirradiated uranium scrap for the Atomic Energy Commission, recovering ...

  15. McHenry County, Illinois: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Lake, Illinois McHenry, Illinois Oakwood Hills, Illinois Pistakee Highlands, Illinois Port Barrington, Illinois Prairie Grove, Illinois Richmond, Illinois Ringwood, Illinois...

  16. McDowell County, North Carolina: Energy Resources | Open Energy...

    Open Energy Info (EERE)

    Zone Number 4 Climate Zone Subtype A. Places in McDowell County, North Carolina Marion, North Carolina Old Fort, North Carolina West Marion, North Carolina Retrieved from...

  17. Stone & McCarthy Research Associates | Open Energy Information

    Open Energy Info (EERE)

    en.openei.orgwindex.php?titleStone%26McCarthyResearchAssociates&oldid767330" Categories: Organizations Research Institutions Stubs Articles with outstanding TODO tasks...

  18. McClellan, California: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Technology Incubator Renewable Energy Institute International Sacramento Area Technology Alliance Registered Energy Companies in McClellan, California CleanStart Renewable Energy...

  19. McMinnville Water & Light- Conservation Service Loan Program

    Broader source: Energy.gov [DOE]

    McMinnville Water & Light offers financing to residential and commercial customers to make energy efficient improvements to eligible facilities and homes. Financing is available for pre...

  20. McArthur, Ohio: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Ohio's 18th congressional district.12 Registered Energy Companies in McArthur, Ohio Alternative Liquid Fuels (ALF) References US Census Bureau Incorporated place and...

  1. ARM - Midlatitude Continental Convective Clouds Experiment (MC3E...

    Office of Scientific and Technical Information (OSTI)

    Vertical Air Motion (williams-vertair) Title: ARM - Midlatitude Continental Convective Clouds Experiment (MC3E): Multi-Frequency Profilers, Vertical Air Motion (williams-vertair) ...

  2. ARM - Midlatitude Continental Convective Clouds Experiment (MC3E...

    Office of Scientific and Technical Information (OSTI)

    Parcivel Disdrometer (williams-disdro) Title: ARM - Midlatitude Continental Convective Clouds Experiment (MC3E): Multi-Frequency Profilers, Parcivel Disdrometer (williams-disdro) ...

  3. Dr. Mike McKittrick | Department of Energy

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

    About Us Dr. Mike McKittrick - Advanced Manufacturing Office lead for the Critical Materials Institute Most Recent Additive Manufacturing Meets the Critical Materials Shortage ...

  4. McClain County, Oklahoma: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Zone Subtype A. Places in McClain County, Oklahoma Blanchard, Oklahoma Byars, Oklahoma Cole, Oklahoma Dibble, Oklahoma Goldsby, Oklahoma Newcastle, Oklahoma Purcell, Oklahoma...

  5. McKinney, Texas: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Apps Datasets Community Login | Sign Up Search Page Edit with form History McKinney, Texas: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates...

  6. Numerical Modeling At Dixie Valley Geothermal Area (McKenna ...

    Open Energy Info (EERE)

    Numerical Modeling At Dixie Valley Geothermal Area (McKenna & Blackwell, 2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Numerical Modeling...

  7. ARM - Midlatitude Continental Convective Clouds Experiment (MC3E...

    Office of Scientific and Technical Information (OSTI)

    Surface Meteorology (williams-surfmet) Title: ARM - Midlatitude Continental Convective Clouds Experiment (MC3E): Multi-Frequency Profilers, Surface Meteorology (williams-surfmet) ...

  8. McKay Bay Facility Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    Biomass Facility Facility McKay Bay Facility Sector Biomass Facility Type Municipal Solid Waste Location Hillsborough County, Florida Coordinates 27.9903597, -82.3017728...

  9. McKenzie Solar Power Facility | Open Energy Information

    Open Energy Info (EERE)

    Solar Power Facility Facility McKenzie Solar Plant Sector Solar Facility Type Photovoltaic Facility Status In Service Owner Recurrent Energy Developer Recurrent Energy Energy...

  10. McFarland, California: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    it. McFarland is a city in Kern County, California. It falls under California's 20th congressional district.12 References US Census Bureau Incorporated place and...

  11. McDonald County, Missouri: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    A. Places in McDonald County, Missouri Anderson, Missouri Ginger Blue, Missouri Goodman, Missouri Lanagan, Missouri Noel, Missouri Pineville, Missouri Southwest City,...

  12. Gordon McPheeters | Argonne Leadership Computing Facility

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

    Gordon McPheeters HPC Systems Administration Specialist - File Systems Argonne National Laboratory 9700 S. Cass Avenue Building 240 - Rm. 1122 Argonne, IL 60439 630-252-6430...

  13. McNary, Arizona: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    McNary, Arizona: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 34.0736564, -109.8570472 Show Map Loading map... "minzoom":false,"mappingservi...

  14. McLennan County, Texas: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Lorena, Texas Mart, Texas McGregor, Texas Moody, Texas Riesel, Texas Robinson, Texas Ross, Texas Valley Mills, Texas Waco, Texas West, Texas Woodway, Texas Retrieved from...

  15. Supersymmetric quantum mechanics and paraquantization

    SciTech Connect (OSTI)

    Morchedi, O.; Mebarki, N.

    2012-06-27

    The paraquantum Hamiltonian of a free particle is shown to be supersymmetric. Depending on the space-time dimension, the corresponding N=1 and N=2 supercharges are constructed and the related Hamiltonians are derived.

  16. Gravitomagnetism and Spinor Quantum Mechanics

    SciTech Connect (OSTI)

    Adler, Ronald J.; Chen, Pisin; Varani, Elisa; /Unlisted

    2012-09-14

    We give a systematic treatment of a spin 1=2 particle in a combined electromagnetic field and a weak gravitational field that is produced by a slowly moving matter source. This paper continues previous work on a spin zero particle, but it is largely self-contained and may serve as an introduction to spinors in a Riemann space. The analysis is based on the Dirac equation expressed in generally covariant form and coupled minimally to the electromagnetic field. The restriction to a slowly moving matter source, such as the earth, allows us to describe the gravitational field by a gravitoelectric (Newtonian) potential and a gravitomagnetic (frame-dragging) vector potential, the existence of which has recently been experimentally verified. Our main interest is the coupling of the orbital and spin angular momenta of the particle to the gravitomagnetic field. Specifically we calculate the gravitational gyromagnetic ratio as g{sub g} = 1 ; this is to be compared with the electromagnetic gyromagnetic ratio of g{sub e} = 2 for a Dirac electron.

  17. Quantum steady computation

    SciTech Connect (OSTI)

    Castagnoli, G. )

    1991-08-10

    This paper reports that current conceptions of quantum mechanical computers inherit from conventional digital machines two apparently interacting features, machine imperfection and temporal development of the computational process. On account of machine imperfection, the process would become ideally reversible only in the limiting case of zero speed. Therefore the process is irreversible in practice and cannot be considered to be a fundamental quantum one. By giving up classical features and using a linear, reversible and non-sequential representation of the computational process - not realizable in classical machines - the process can be identified with the mathematical form of a quantum steady state. This form of steady quantum computation would seem to have an important bearing on the notion of cognition.

  18. Correlated electron dynamics with time-dependent quantum Monte...

    Office of Scientific and Technical Information (OSTI)

    atoms subjected to an external electromagnetic field with amplitude sufficient to ... QUANTUM MECHANICS, GENERAL PHYSICS; ELECTROMAGNETIC FIELDS; ELECTRON CORRELATION; ...

  19. Hybrid Rotaxanes: Interlocked Structures for Quantum Computing...

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

    Hybrid Rotaxanes: Interlocked Structures for Quantum Computing? Print Rotaxanes are mechanically interlocked molecular architectures consisting of a dumbbell-shaped molecule, the...

  20. ANALOG QUANTUM NEURON FOR FUNCTIONS APPROXIMATION (Conference...

    Office of Scientific and Technical Information (OSTI)

    of Energy (US) Country of Publication: United States Language: English Subject: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; IMPLEMENTATION; NERVE CELLS; WAVEGUIDES...

  1. M-C Power commercialization program overview

    SciTech Connect (OSTI)

    Camara, E.H.

    1996-12-31

    Competition in the electric generation market will increase, owing to unbundling and repackaging of electric energy services. One technology that will enable electric companies to expand their role in the energy services marketplace is the molten carbonate fuel cell (MCFC). Distributed power plants using MCFCs can fill the demand for localized, efficient, and environmentally friendly energy supplies at the lowest possible cost. This type of equipment will allow electric companies to supply the majority of a customer`s electric and thermal energy needs from small power plants located at the customer`s facilities. M-C Power`s mission is the development and commercialization of MCFC stacks. Advanced separator plates were designed, and cost of non-repeat hardware was reduced. In the technology development phase of the commercialization program, a 250 KW MCFC demonstration plant at the Naval Air Station Miramar in Sand Diego is the culminating event in the product development test project. Product requirements, economic analysis, and market entry are discussed. This is the 2nd year of a 5-year program.

  2. Independent dynamic acousto-mechanical and electrostatic control of individual quantum dots in a LiNbO{sub 3}-GaAs hybrid

    SciTech Connect (OSTI)

    Pustiowski, Jens; Müller, Kai; Bichler, Max; Koblmüller, Gregor; Finley, Jonathan J.; Wixforth, Achim; Krenner, Hubert J.

    2015-01-05

    We demonstrate tuning of single quantum dot emission lines by the combined action of the dynamic acoustic field of a radio frequency surface acoustic wave and a static electric field. Both tuning parameters are set all-electrically in a LiNbO{sub 3}-GaAs hybrid device. The surface acoustic wave is excited directly on the strong piezoelectric LiNbO{sub 3} onto which a GaAs-based p-i-n photodiode containing a single layer of quantum dots was epitaxially transferred. We demonstrate dynamic spectral tuning with bandwidths exceeding 3 meV of single quantum dot emission lines due to deformation potential coupling. The center energy of the dynamic spectral oscillation can be independently programmed simply by setting the bias voltage applied to the diode.

  3. Quantum Computing: Solving Complex Problems

    ScienceCinema (OSTI)

    DiVincenzo, David [IBM Watson Research Center

    2009-09-01

    One of the motivating ideas of quantum computation was that there could be a new kind of machine that would solve hard problems in quantum mechanics. There has been significant progress towards the experimental realization of these machines (which I will review), but there are still many questions about how such a machine could solve computational problems of interest in quantum physics. New categorizations of the complexity of computational problems have now been invented to describe quantum simulation. The bad news is that some of these problems are believed to be intractable even on a quantum computer, falling into a quantum analog of the NP class. The good news is that there are many other new classifications of tractability that may apply to several situations of physical interest.

  4. Super-radiance and open quantum systems

    SciTech Connect (OSTI)

    Volya, Alexander [Department of Physics, Florida State University, Tallahassee, FL 32306-4350 (United States); Zelevinsky, Vladimir [NSCL, Michigan State University, East Lansing, MI 48824-1321 (United States); Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824-1321 (United States)

    2005-07-08

    Quantum wires, loosely bound nuclei, molecules in chemical reactions and exotic narrow pentaquark states are different examples of open quantum mesoscopic systems. The coupling with and through continuum is their common feature. We discuss general properties of quantum systems in the regime of strong continuum coupling, when the mechanism of Dicke super-radiance changes intrinsic dynamics, signatures of quantum chaos, lifetime of unstable states and reaction cross sections. The examples are shown for various areas of mesoscopic physics.

  5. ONSET OF CHAOS IN A MODEL OF QUANTUM COMPUTATION G. BERMAN; ET...

    Office of Scientific and Technical Information (OSTI)

    OF CHAOS IN A MODEL OF QUANTUM COMPUTATION G. BERMAN; ET AL 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 99 GENERAL AND MISCELLANEOUSMATHEMATICS, COMPUTING, AND...

  6. MC&A System Effectiveness Tool (MSET) (Presentation 2)

    SciTech Connect (OSTI)

    Powell, Danny H; Elwood Jr, Robert H

    2011-01-01

    MSET is a self-assessment or inspection tool utilizing probabilistic risk assessment (PRA) methodology to calculate the system effectiveness of a nuclear facility's material control and accountability (MC&A) system. MSET analyzes the effectiveness of an MC&A system based on defined performance metrics for MC&A functions defined based on U.S. and international best practices and regulations. MSET analysis is based on performance of the entire MC&A system including defense-in-depth attributes and sensitivity analysis of changes in the system, both positive and negative. MSET analysis considers: accounting; containment; access control; surveillance capabilities of the system; and other interfaces with the physical protection systems that provide detection of an unauthorized action. MSET performs a system effectiveness calculation evaluation against a defined performance metric. MSET uses PRA techniques to analyze the MC&A system. MSET is a tool for evaluating the system effectiveness of MC&A systems during self-assessment or external inspection. MSET has been developed, tested, and benchmarked by the U.S. DOE. In collaboration with the U.S. DOE, Rosatom is developing a Russian version (MSET-R) planned for pilot implementation at select material balance areas in 2011. MSET has been shown to be an effective training and communication tool for MC&A.

  7. Engineering process instructions and development summary MC3642 thermal battery

    SciTech Connect (OSTI)

    Jacobs, D.

    1981-06-01

    The MC3642 is a dual channel thermal battery used on the DE1010/W85 Command Disable Controller. It utilizes the CalCaCrO{sub 4} electrochemical system. The electrical requirements of this battery are as follows: RISE TIME PEAK VOLTAGE ACTIVE LIFE LOAD Channel 1 - 1.0 Sec. Max. 34 Volts 10 Sec. Min. 40.0 Ohms to 20 Volts above 20 Volts Channel 2 - .350 Sec. Max. 42 Volts 10 MSec. Min. 6.5 Ohms to 23 Volts above 23 Volts The battery consists of 14 cells connected in series (Channel 2) and 12 cells connected in series (Channel 1). Each cell is composed of an anode fabricated from a bimetallic sheet (0.005{double_prime} thick calcium on 0.005{double_prime} thick iron substrate), a depolarizer-electrolyte-binder (DEB) pellet and a heat pellet. Activation is achieved by mechanical primer. Optimum battery performance is achieved with a 35155/10 DEB pellet weighing .80g and a heat pellet, weighing 1.30 grams, of 88/12 heat powder.

  8. Quantum Optics

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

    Energy Frontier Research Centers: Solid-State Lighting Science Center for Frontiers of ... Quantum Optics HomeEnergy ResearchEFRCsSolid-State Lighting Science EFRCQuantum Optics ...

  9. ARM - News from the McMurdo Deployment

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

    AntarcticaNews from the McMurdo Deployment McMurdo Deployment AMF Home McMurdo Home Experiment Planning Abstract and Related Campaigns Science Plan AWARE Website Deployment Operations Baseline Instruments and Data Plots at the Archive Weather & Climate Support for the AWARE Project Outreach News & Press AWARE Log of Events Backgrounder (PDF, 1.5MB) Poster (JPEG, 1.3MB) Images Contacts Karen Sonntag, AMF2 Operations Manager Hanna Goss, Media Contact Dan Lubin, Principal Investigator News

  10. Some properties of correlations of quantum lattice systems in thermal equilibrium

    SciTech Connect (OSTI)

    Frhlich, Jrg; Ueltschi, Daniel

    2015-05-15

    Simple proofs of uniqueness of the thermodynamic limit of KMS states and of the decay of equilibrium correlations are presented for a large class of quantum lattice systems at high temperatures. New quantum correlation inequalities for general Heisenberg models are described. Finally, a simplified derivation of a general result on power-law decay of correlations in 2D quantum lattice systems with continuous symmetries is given, extending results of McBryan and Spencer for the 2D classical XY model.