Precession of a Freely Rotating Rigid Body. Inelastic Relaxation in the Vicinity of Poles
Michael Efroimsky
2001-12-06
When a solid body is freely rotating at an angular velocity ${\\bf \\Omega}$, the ellipsoid of constant angular momentum, in the space $\\Omega_1, \\Omega_2, \\Omega_3$, has poles corresponding to spinning about the minimal-inertia and maximal-inertia axes. The first pole may be considered stable if we neglect the inner dissipation, but becomes unstable if the dissipation is taken into account. This happens because the bodies dissipate energy when they rotate about any axis different from principal. In the case of an oblate symmetrical body, the angular velocity describes a circular cone about the vector of (conserved) angular momentum. In the course of relaxation, the angle of this cone decreases, so that both the angular velocity and the maximal-inertia axis of the body align along the angular momentum. The generic case of an asymmetric body is far more involved. Even the symmetrical prolate body exhibits a sophisticated behaviour, because an infinitesimally small deviation of the body's shape from a rotational symmetry (i.e., a small difference between the largest and second largest moments of inertia) yields libration: the precession trajectory is not a circle but an ellipse. In this article we show that often the most effective internal dissipation takes place at twice the frequency of the body's precession. Applications to precessing asteroids, cosmic-dust alignment, and rotating satellites are discussed.
H. Schomerus; K. M. Frahm; M. Patra; C. W. J. Beenakker
1999-11-01
The quantum-limited linewidth of a laser cavity is enhanced above the Schawlow-Townes value by the Petermann factor K, due to the non-orthogonality of the cavity modes. We derive the relation between the Petermann factor and the residues of poles of the scattering matrix and investigate the statistical properties of the Petermann factor for cavities in which the radiation is scattered chaotically. For a single scattering channel we determine the complete probability distribution of K and find that the average Petermann factor $$ depends non-analytically on the area of the opening, and greatly exceeds the most probable value. For an arbitrary number N of scattering channels we calculate $$ as a function of the decay rate $\\Gamma$ of the lasing mode. We find for $N\\gg 1$ that for typical values of $\\Gamma$ the average Petermann factor $\\propto \\sqrt{N}\\gg 1$ is parametrically larger than unity.
Thorn, Craig E. (Wading River, NY); Chasman, Chellis (Setauket, NY); Baltz, Anthony J. (Coram, NY)
1984-04-24
An improved magnet which more easily provides a radially increasing magnetic field, as well as reduced fringe field and requires less power for a given field intensity. The subject invention comprises a pair of spaced, opposed magnetic poles which further comprise a pair of pole roots, each having a pole tip attached to its center. The pole tips define the gap between the magnetic poles and at least a portion of each pole tip is separated from its associated pole root. The separation begins at a predetermined distance from the center of the pole root and increases with increasing radial distance while being constant with azimuth within that portion. Magnets in accordance with the subject invention have been found to be particularly advantageous for use in large isochronous cyclotrons.
Thorn, C.E.; Chasman, C.; Baltz, A.J.
1981-11-19
An improved magnet more easily provides a radially increasing magnetic field, as well as reduced fringe field and requires less power for a given field intensity. The subject invention comprises a pair of spaced, opposed magnetic poles which further comprise a pair of pole roots, each having a pole tip attached to its center. The pole tips define the gap between the magnetic poles and at least a portion of each pole tip is separated from its associated pole root. The separation begins at a predetermined distance from the center of the pole root and increases with increasing radial distance while being constant with azimuth within that portion. Magnets in accordance with the subject invention have been found to be particularly advantageous for use in large isochronous cyclotrons.
Annihilation Poles for Form Factors in XXZ Model
S. Pakuliak
1993-07-14
The annihilation poles for the form factors in XXZ model are studied using vertex operators introduced in \\cite{DFJMN}. An annihilation pole is the property of form factors according to which the residue of the $2n$-particle form factor in such a pole can be expressed through linear combination of the $2n-2$-particle form factors. To prove this property we use the bosonization of the vertex operators in XXZ model which was invented in \\cite{JMMN}.
Meepos, Dana
2012-01-01
THE PURGATORY OF POLE DANCING Dana Meepos* I.Id. THE PURGATORY OF POLE DANCING courts. 5 5 Furthermore,J. , concurring). THE PURGATORY OF POLE DANCING tice Scalia
Pole pulling apparatus and method
McIntire, Gary L. (12 Honeybee La., Idaho Falls, ID 83402)
1989-01-01
An apparatus for removal of embedded utility-type poles which removes the poles quickly and efficiently from their embedded position without damage to the pole or surrounding structures. The apparatus includes at least 2 piston/cylinder members equally spaced about the pole, and a head member affixed to the top of each piston. Elongation of the piston induces rotation of the head into the pole to increase the gripping action and reduce slippage. Repeated actuation and retraction of the piston and head member will "jack" the pole from its embedded position.
Unknown
2006-01-01
enhancements that can be made to overcome these shortcomings. We next propose pole discovery and impedance computation methods that address these shortcomings by exploring only a certain region of interest in the s-plane. The reduced time and memory complexity...
Cluster Observations with the South Pole Telescope
Plagge, Thomas Jeffrey
2009-01-01
The South Pole Telescope during the last stages ofwater vapor at the South Pole relative to two otherSZ Survey Instrument . 3 The South Pole Telescope Observing
Single phase two pole/six pole motor
Kirschbaum, H.S.
1984-09-25
A single phase alternating current two pole/six pole motor is provided with a main stator winding having six coils disposed unequally around the periphery of the machine. These coils are divided into two groups. When these groups are connected such that their magnetomotive forces are additive, two pole motor operation results. When the polarity of one of the groups is then reversed, six pole motor operation results. An auxiliary stator winding which is similar to the main stator winding is displaced from the main stator winding by 90 electrical degrees on a two pole basis. 12 figs.
Poles of Intertwining Operators via Endoscopy; the Connection with ...
Freydoon Shahidi
1910-00-20
In this paper, we determine the residues at poles of standard intertwining operators for parabolically ...... Here {m1} is as earlier just the M ? ?-conjugacy class and does not denote the projection .... 116 (1994), 1101–1151. 11. Goldberg, D. and ...
Six pole/eight pole single-phase motor
Kirschbaum, Herbert S. (Asheville, NC)
1984-01-01
A single phase alternating current electric motor is provided with a main stator winding having two coil groups which are connected to form eight poles for eight-pole operation and to form six poles for six-pole operation. Each group contains four series connected coil elements with each element spanning approximately one-seventh of the periphery of the machine. The coil groups are spaced 180 mechanical degrees apart such that each end coil of one group overlaps one of the end coils of the other group. An auxiliary stator winding having two coil groups with the same relative angular displacement as the main stator winding coil groups is included.
Helicopter aids transmission pole replacement
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Helicopter-aids-transmission-pole-replacement Sign In About | Careers | Contact | Investors | bpa.gov Search News & Us Expand News & Us Projects & Initiatives Expand Projects...
Lightweight extendable and retractable pole
Warren, J.L.; Brandt, J.E.
1994-08-02
A lightweight extendable and retractable telescopic pole is disclosed comprising a plurality of non-metallic telescoping cylinders with sliding and sealing surfaces between the cylinders, a first plug member on the upper end of the smallest cylinder, and a second plug member on the lower end of the largest cylinder, whereby fluid pressure admitted to the largest cylinder will cause the telescoping cylinders to slide relative to one another causing the pole to extend. An elastomeric member connects the first plug member with one of the intermediate cylinders to urge the cylinders back into a collapsed position when the fluid pressure in the cylinders is vented. Annular elastomer members are provided which seal one cylinder to another when the pole is fully extended and further serve to provide a cushion to prevent damage to the cylinders when the pole is urged back into its retractable position by the elastomeric members and the venting of the pressure. A value mechanism associated with the pole is provided to admit a fluid under pressure to the interior of the telescoping cylinders of the pole while pressurizing a pressure relief port having an opening larger than the inlet port in a closed position whereby removal of the pressure on the relief port will cause the relief port to open to quickly lower the pressure in the interior of the telescoping cylinders to thereby assist in the rapid retraction of the extended pole. 18 figs.
Six pole/eight pole single-phase motor
Kirschbaum, H.S.
1984-07-31
A single phase alternating current electric motor is provided with a main stator winding having two coil groups which are connected to form eight poles for eight-pole operation and to form six poles for six-pole operation. Each group contains four series connected coil elements with each element spanning approximately one-seventh of the periphery of the machine. The coil groups are spaced 180 mechanical degrees apart such that each end coil of one group overlaps one of the end coils of the other group. An auxiliary stator winding having two coil groups with the same relative angular displacement as the main stator winding coil groups is included. 10 figs.
A. H. Hoang; M. C. Smith; T. Stelzer; S. Willenbrock
1999-04-07
The pole mass of a heavy quark is ambiguous by an amount of order $\\Lambda_{QCD}$. We show that the heavy-quark potential, $V(r)$, is similarly ambiguous, but that the total static energy, $2M_{pole}+V(r)$, is unambiguous when expressed in terms of a short-distance mass. This implies that the extraction of a short-distance mass from the quarkonium spectrum is free of an ambiguity of order $\\Lambda_{QCD}$, in contrast with the pole mass.
Driven inelastic Maxwell gases
V. V. Prasad; Sanjib Sabhapandit; Abhishek Dhar
2015-07-22
We consider the inelastic Maxwell model, which consists of a collection of particles that are characterized by only their velocities, and evolving through binary collisions and external driving. At any instant, a particle is equally likely to collide with any of the remaining particles. The system evolves in continuous time with mutual collisions and driving taken to be point processes with rates $\\tau_c^-{1}$ and $\\tau_w^{-1}$ respectively. The mutual collisions conserve momentum and are inelastic, with a coefficient of restitution $r$. The velocity change of a particle with velocity $v$, due to driving, is taken to be $\\Delta v=-(1+r_w) v+\\eta$, mimicking the collision with a vibrating wall, where $r_w$ the coefficient of restitution of the particle with the "wall" and $\\eta$ is Gaussian white noise. The Ornstein-Uhlenbeck driving mechanism given by $\\frac{dv}{dt}=-\\Gamma v+\\eta$ is found to be a special case of the driving modeled as a point process. Using both the continuum and discrete versions we show that while the equations for the one-particle and the two-particle velocity distribution functions do not close, the joint evolution equations of the variance and the two-particle velocity correlation functions close. With the exact formula for the variance we find that, for $r_w\
Single phase four pole/six pole motor
Kirschbaum, H.S.
1984-10-09
A single phase alternating current electric motor is provided with a main stator winding having two coil groups each including the series connection of three coils. These coil groups can be connected in series for six pole operation and in parallel for four pole operation. The coils are approximately equally spaced around the periphery of the machine but are not of equal numbers of turns. The two coil groups are identically wound and spaced 180 mechanical degrees apart. One coil of each group has more turns and a greater span than the other two coils. 10 figs.
Deep Inelastic Neutrino Interactions
S. Kretzer; M. H. Reno
2003-06-30
Understanding neutrino interactions is an important task in searches for neutrino oscillations; e.g. the nu_{mu} -> nu_{tau} oscillation hypothesis will be tested through nu_{tau} production of tau in long-baseline experiments as well as underground neutrino telescopes. An anomaly in the deep inelastic interaction of neutrinos has recently been observed by the NuTeV collaboration -- resulting in a measured weak mixing angle sin^2 Theta_{W} that differs by ~ 3 sigma from the standard model expectation. In this contribution to the proceedings of NUINT02, we summarize results on the NLO neutrino structure functions and cross sections in which charm quark mass and target mass effects in the collinear approximation are included.
Pole Placement Algorithms ROBERT MAHONY~ UWE
Moore, John Barratt
Pole Placement Algorithms ROBERT MAHONY~ UWE for Symmetric Realisations HELMKE$ JOHN MOORE a numerical algorithm for deter- mining optimal output feedback gains for the pole place- ment task is well defined even when an exact solution to the pole placement task does not exist. Thus, the proposed
CHOOSING POLES SO THAT THE SINGLE-INPUT POLE PLACEMENT PROBLEM IS WELL CONDITIONED
Xu, Hongguo
CHOOSING POLES SO THAT THE SINGLE-INPUT POLE PLACEMENT PROBLEM IS WELL CONDITIONED VOLKER MEHRMANN, pp. 664Â681, July 1998 004 Abstract. We discuss the single-input pole placement problem (SIPP) and analyze how the conditioning of the problem can be estimated and improved if the poles are allowed to vary
CHOOSING POLES SO THAT THE SINGLEINPUT POLE PLACEMENT PROBLEM IS WELL CONDITIONED #
Xu, Hongguo
CHOOSING POLES SO THAT THE SINGLEÂINPUT POLE PLACEMENT PROBLEM IS WELL CONDITIONED # VOLKER Mathematics Vol. 19, No. 3, pp. 664--681, July 1998 004 Abstract. We discuss the singleÂinput pole placement problem (SIPP) and analyze how the conditioning of the problem can be estimated and improved if the poles
Pole structure from energy-dependent and single-energy fits to $?N$ elastic scattering data
Alfred Švarc; Mirza Hadžimehmedovi?; Hedim Osmanovi?; Jugoslav Stahov; Ron L. Workman
2015-01-28
The pole structure of the current GW/SAID partial-wave analysis of elastic $\\pi N$ scattering and $\\eta N$ production data is studied. Pole positions and residues are extracted from both the energy-dependent and single-energy fits, using two different methods. For the energy-dependent fits, both contour integration and a Laurent+Pietarinen approach are used. In the case of single-energy fits, the Laurent+Pietarinen approach is used. Errors are estimated and the two sets of results are compared to other recent and older fits to data.
Microtubule tethers at kinetochores and spindle poles : essential mitotic components
Silk, Alain Daniel
2008-01-01
focusing mitotic spindle poles by minus end-directed motor1998). Focusing on spindle poles. J Cell Sci 111 (Pt 11),A. (1997). Mitotic spindle poles are organized by structural
Use of inelastic analysis in cask design
AMMERMAN,DOUGLAS J.; BREIVIK,NICOLE L.
2000-05-15
In this paper, the advantages and disadvantages of inelastic analysis are discussed. Example calculations and designs showing the implications and significance of factors affecting inelastic analysis are given. From the results described in this paper it can be seen that inelastic analysis provides an improved method for the design of casks. It can also be seen that additional code and standards work is needed to give designers guidance in the use of inelastic analysis. Development of these codes and standards is an area where there is a definite need for additional work. The authors hope that this paper will help to define the areas where that need is most acute.
Tree-Loop Duality Relation beyond simple poles
Isabella Bierenbaum; Sebastian Buchta; Petros Draggiotis; Ioannis Malamos; German Rodrigo
2012-11-21
We develop the Tree-Loop Duality Relation for two- and three-loop integrals with multiple identical propagators (multiple poles). This is the extension of the Duality Relation for single poles and multiloop integrals derived in previous publications. We prove a generalization of the formula for single poles to multiple poles and we develop a strategy for dealing with higher-order pole integrals by reducing them to single pole integrals using Integration By Parts.
Moretto, L.G.
2010-01-01
618MeV 0 =4O° ro I in "IT N Deep inelastic component -•s 50nwnetl npin* llE THE ROLE OF DEEP INELASTIC PROCESSES INAND THEORETICAL ASPECTS OF DEEP INELASTIC REACTIONS L. G. M
Neutron inelastic scattering in natural Pb as a background in...
Office of Scientific and Technical Information (OSTI)
Neutron inelastic scattering in natural Pb as a background in neutrinoless double-beta decay experiments Citation Details In-Document Search Title: Neutron inelastic scattering in...
Inelastic Tunneling Spectroscopy in Unconventional Superconductors
Inelastic Tunneling Spectroscopy in Unconventional Superconductors Molecular Vibration and Single Superconductors p.1/13 #12;Old Results R.C. Jaklevic and J. Lambe, Phys. Rev. Lett. 17, 1139-1140 (1966 in Unconventional Superconductors p.2/13 #12;STM observation of local inelastic mode B.C. Stipe, M.A Rezaei, and W
HIPPO (HIAPER Pole-to-Pole Observations) Data from CDIAC's HIPPO Data Archive
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
The HIPPO (HIAPER Pole-to-Pole Observations) study of the carbon cycle and greenhouse gases measured meteorology, atmospheric chemistry, and aerosol constituents along transects from approximately pole-to-pole over the Pacific Ocean. HIPPO flew hundreds of vertical profiles from the ocean/ice surface to as high as the tropopause, at five times during different seasons over a three year period from 2009-2011. HIPPO provides the first high-resolution vertically-resolved global survey of a comprehensive suite of atmospheric trace gases and aerosols pertinent to understanding the carbon cycle and challenging global climate models.
DISCOVERY OF FOG AT THE SOUTH POLE OF TITAN
Brown, M. E.; Smith, A. L.; Chen, C.; Adamkovics, M.
2009-11-20
While Saturn's moon Titan appears to support an active methane hydrological cycle, no direct evidence for surface-atmosphere exchange has yet appeared. The indirect evidence, while compelling, could be misleading. It is possible, for example, that the identified lake features could be filled with ethane, an involatile long-term residue of atmospheric photolysis; the apparent stream and channel features could be ancient remnants of a previous climate; and the tropospheric methane clouds, while frequent, could cause no rain to reach the surface. We report here the detection of fog at the south pole of Titan during late summer using observations from the VIMS instrument on board the Cassini spacecraft. While terrestrial fog can form from a variety of causes, most of these processes are inoperable on Titan. Fog on Titan can only be caused by evaporation of nearly pure liquid methane; the detection of fog provides the first direct link between surface and atmospheric methane. Based on the detections presented here, liquid methane appears widespread at the south pole of Titan in late southern summer, and the hydrological cycle on Titan is currently active.
Discovery of fog at the south pole of Titan
Brown, M E; Chen, C; Adamkovics, M
2009-01-01
While Saturn's moon Titan appears to support an active methane hydrological cycle, no direct evidence for surface-atmosphere exchange has yet appeared. It is possible that the identified lake-features could be filled with ethane, an involatile long term residue of atmospheric photolysis; the apparent stream and channel features could be ancient from a previous climate; and the tropospheric methane clouds, while frequent, could cause no rain to reach the surface. We report here the detection of fog at the south pole of Titan during late summer using observations from the VIMS instrument on board the Cassini spacecraft. While terrestrial fog can form from a variety of causes, most of these processes are inoperable on Titan. Fog on Titan can only be caused by evaporation of liquid methane; the detection of fog provides the first direct link between surface and atmospheric methane. Based on the detections presented here, liquid methane appears widespread at the south pole of Titan in late southern summer, and the...
DIRECTIONS AND FACTORIZATIONS OF ZEROS AND POLES IN MULTIVARIABLE SYSTEMS
Skogestad, Sigurd
DIRECTIONS AND FACTORIZATIONS OF ZEROS AND POLES IN MULTIVARIABLE SYSTEMS K. Havre 1 and S. INTERNAL REPORT June 96. Abstract. Directionality of zeros and poles in multivariable systems izations of RHPzeros and poles in Blaschke products, with statespace realizations dependent on the pole
DIRECTIONS AND FACTORIZATIONS OF ZEROS AND POLES IN MULTIVARIABLE SYSTEMS
Skogestad, Sigurd
DIRECTIONS AND FACTORIZATIONS OF ZEROS AND POLES IN MULTIVARIABLE SYSTEMS K. Havre1 and S. INTERNAL REPORT - June 96. Abstract. Directionality of zeros and poles in multivariable systems- izations of RHP-zeros and poles in Blaschke products, with state-space realizations dependent on the pole
Optical characterization of periodically-poled KTiOPO4
Exter, Martin van
Optical characterization of periodically-poled KTiOPO4 W. H. Peeters and M. P. van Exter Huygens-conversion(SPDC) give a direct visualization of the poling quality of a periodically-poled crystal. Identical Maker with small and slowly-varying deformations of the poling structure. Our theoretical model, based on a Fourier
Choosing Poles So That the Single-Input Pole Placement Problem Is Well Conditioned
Xu, Hongguo; Mehrmann, Volker
1998-05-01
We discuss the single-input pole placement problem (SIPP) and analyze how the conditioning of the problem can be estimated and improved if the poles are allowed to vary in specific regions in the complex plane. Under certain assumptions we give...
Light propagation in the South Pole ice
Williams, Dawn; Collaboration: IceCube Collaboration
2014-11-18
The IceCube Neutrino Observatory is located in the ice near the geographic South Pole. Particle showers from neutrino interactions in the ice produce light which is detected by IceCube modules, and the amount and pattern of deposited light are used to reconstruct the properties of the incident neutrino. Since light is scattered and absorbed by ice between the neutrino interaction vertex and the sensor, IceCube event reconstruction depends on understanding the propagation of light through the ice. This paper presents the current status of modeling light propagation in South Pole ice, including the recent observation of an azimuthal anisotropy in the scattering.
INELASTIC LIGHT SCATTERING STUDIES OF BOROCARBIDE SUPERCONDUCTORS
Yang, In-Sang
INELASTIC LIGHT SCATTERING STUDIES OF BOROCARBIDE SUPERCONDUCTORS INSANG YANG Department In recent years of studies in ``unconventional'' superconductivity, researchers have concentrated on exotic behavior of the heavy fermion and cuprate su perconductors. However, even superconductors that are thought
Muon Flux at the Geographical South Pole
X. Bai; T. K. Gaisser; A. Karle; K. Rawlins; G. M. Spiczak; Todor Stanev
2006-02-17
The muon flux at the South-Pole was measured for five zenith angles, $0^{\\circ}$, $15^{\\circ}$, $35^{\\circ}$, $82.13^{\\circ}$ and $85.15^{\\circ}$ with a scintillator muon telescope incorporating ice Cherenkov tank detectors as the absorber. We compare the measurements with other data and with calculations.
M. Talon
1992-10-02
We study integrable dynamical systems described by a Lax pair involving a spectral parameter. By solving the classical Yang-Baxter equation when the R-matrix has two poles we show that they can be interpreted as natural motions on a twisted loop algebra.
Takahashi, Yuki David
2010-01-01
South Pole Dark Sector and LC-130 . . . . . . .2.2 South Pole site . . . . . . . . . . . . . .Bicep Telescope at the South Pole by Yuki David Takahashi A
Measurements of Secodary Cosmic Microwave Background Anisotropies with the South Pole Telescope
Lueker, Martin Van
2010-01-01
6 The South Pole Telescope Atmospheric Conditionsat the South Pole Telescope and Optical Design . . . . . . .interplay of cable delays, poles, resonances and zeroes in
EECBG Success Story: North Pole's Holiday Wish for an Energy...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Pole's Holiday Wish for an Energy Efficient 2012 EECBG Success Story: North Pole's Holiday Wish for an Energy Efficient 2012 December 23, 2011 - 4:20pm Addthis The city of North...
SELECTION OF VARIABLES FOR REGULATORY CONTROL USING POLE DIRECTIONS.
Skogestad, Sigurd
SELECTION OF VARIABLES FOR REGULATORY CONTROL USING POLE DIRECTIONS. K. Havre1 and S. Skogestad 2 of a stabilizing control structure, using the in- formation given in the pole directions. It is shown how the input/output pole directions are related to the minimum input energy needed to stabilize a given unstable mode. 1
SELECTION OF VARIABLES FOR REGULATORY CONTROL USING POLE VECTORS
Skogestad, Sigurd
SELECTION OF VARIABLES FOR REGULATORY CONTROL USING POLE VECTORS Kjetil Havre 1 Sigurd Skogestad 2: This paper consider control structure design using the information given in the pole vectors. It is shown how the input and output pole vectors are related to the minimum input energy needed to stabilize a given
POLE PLACEMENT BY STATIC OUTPUT FEEDBACK FOR GENERIC LINEAR SYSTEMS
Eremenko, Alexandre
POLE PLACEMENT BY STATIC OUTPUT FEEDBACK FOR GENERIC LINEAR SYSTEMS A. EREMENKO AND A. GABRIELOV of such systems, where the real pole placement map is not surjective. It follows that for each system in U, there exists an open set of pole configurations, symmetric with respect to the real line, which cannot
MATRIX RATIONAL INTERPOLATION WITH POLES AS INTERPOLATION POINTS
Labahn, George
MATRIX RATIONAL INTERPOLATION WITH POLES AS INTERPOLATION POINTS M. VAN BAREL Department, we show the equivalence between matrix rational interpolation problems with poles as interpolation points and no-pole problems. This equivalence provides an effective method for computing matrix rational
Dimensional perturbation theory for Regge poles Timothy C. Germann
Kais, Sabre
Dimensional perturbation theory for Regge poles Timothy C. Germann Department of Chemistry perturbation theory to the calculation of Regge pole positions, providing a systematic improvement to earlier. INTRODUCTION In scattering theory, Regge poles correspond to singu- larities of the scattering matrix
Counterexamples to pole placement by static output feedback
Eremenko, Alexandre
Counterexamples to pole placement by static output feedback A. Eremenko # and A. Gabrielov + 6 these conditions, there is a nonÂempty open subset U of such systems, where the real pole placement map is not surjective. It follows that for systems in U , there exist open sets of pole configurations which cannot
Counterexamples to pole placement by static output feedback
Eremenko, Alexandre
Counterexamples to pole placement by static output feedback A. Eremenko and A. Gabrielov 6 these conditions, there is a non-empty open subset U of such systems, where the real pole placement map is not surjective. It follows that for systems in U, there exist open sets of pole configurations which cannot
Positive decomposition of transfer functions with multiple poles
Matolcsi, MÃ¡tÃ©
Positive decomposition of transfer functions with multiple poles Bâ??ela Nagy 1 , Mâ??atâ??e Matolcsi 2 poles. One of the appearing positive systems is always 1Âdimensional, while the other has dimension corresponding to the location and order of the poles of t(z). Recently, in [10], a universal approach was found
POLE PLACEMENT BY STATIC OUTPUT FEEDBACK FOR GENERIC LINEAR SYSTEMS
Eremenko, Alexandre
POLE PLACEMENT BY STATIC OUTPUT FEEDBACK FOR GENERIC LINEAR SYSTEMS A. EREMENKO # AND A. GABRIELOV of such systems, where the real pole placement map is not surjective. It follows that for each system in U , there exists an open set of pole configurations, symmetric with respect to the real line, which cannot
RESONANCES AND SCATTERING POLES ON ASYMPTOTICALLY HYPERBOLIC MANIFOLDS
Guillarmou, Colin
RESONANCES AND SCATTERING POLES ON ASYMPTOTICALLY HYPERBOLIC MANIFOLDS COLIN GUILLARMOU Abstract. On an asymptotically hyperbolic manifold (X; g), we show that the poles (called resonances) of the meromorphic extension of the resolvent (#1;g #21;(n #21;)) 1 coincide, with multiplicities, with the poles (called
PERFORMANCE EVALUATION OF FIBER-REINFORCED POLYMER POLES FOR
PERFORMANCE EVALUATION OF FIBER- REINFORCED POLYMER POLES FOR TRANSMISSION LINES BY SHERIF MOHAMED Performance Evaluation of Flber-RelDforced Polymer Pole. for Transmission Lines BY Sherif Mohamed Ibrahim demand for pole-type transmission structures has necessitated the utilization of innovative
SELECTION OF VARIABLES FOR REGULATORY CONTROL USING POLE VECTORS
Skogestad, Sigurd
SELECTION OF VARIABLES FOR REGULATORY CONTROL USING POLE VECTORS Kjetil Havre1 Sigurd Skogestad 2: This paper consider control structure design using the information given in the pole vectors. It is shown how the input and output pole vectors are related to the minimum input energy needed to stabilize a given
Bounds on Scattering Poles in One Dimension Michael Hitrik
Hitrik, Michael
1 Bounds on Scattering Poles in One Dimension Michael Hitrik Department of Mathematics, University-exponentially decaying potentials on the real line sharp upper bounds on the counting function of the poles in discs are derived and the density of the poles in strips is estimated. In the case of nonnegative potentials
Topography of the Lunar Poles from Radar Interferometry: A
Margot, Jean-Luc
Topography of the Lunar Poles from Radar Interferometry: A Survey of Cold Trap Locations J. L. Margot,1 * D. B. Campbell,1 R. F. Jurgens,2 M. A. Slade2 Detailed topographic maps of the lunar poles are 1030 and 2550 square kilometers for the north and south poles, respectively. Topographic depressions
SELECTION OF VARIABLES FOR REGULATORY CONTROL USING POLE DIRECTIONS.
Skogestad, Sigurd
SELECTION OF VARIABLES FOR REGULATORY CONTROL USING POLE DIRECTIONS. K. Havre 1 and S. Skogestad 2 of a stabilizing control structure, using the in formation given in the pole directions. It is shown how the input/output pole directions are related to the minimum input energy needed to stabilize a given unstable mode. 1
POLE PLACEMENT VIA OUTPUT FEEDBACK: A METHODOLOGY BASED ON
Orsi, Robert
POLE PLACEMENT VIA OUTPUT FEEDBACK: A METHODOLOGY BASED ON PROJECTIONS Kaiyang Yang and Robert Orsi feedback pole placement problems of the following rather general form: given n subsets of the complex plane, find a static output feedback that places in each of these subsets a pole of the closed loop system
SCATTERING POLES FOR NEGATIVE POTENTIALS Andr'as Vasy
Vasy, AndrÃ¡s
SCATTERING POLES FOR NEGATIVE POTENTIALS Andr'as Vasy Mathematics Department, MIT Cambridge, MA number of poles in P and they correspond to the bound states of the Hamiltonian \\Delta +V (\\Delta is the positive Laplacian). In [5] Zworski has shown that the number of scattering poles n(r) in a disc of radius
REGULAR POLES AND -NUMBERS IN THE THEORY OF HOLOMORPHIC SEMIGROUPS
Bracci, Filippo
REGULAR POLES AND -NUMBERS IN THE THEORY OF HOLOMORPHIC SEMIGROUPS FILIPPO BRACCI, MANUEL D. CONTRERAS, AND SANTIAGO DÂ´IAZ-MADRIGAL Abstract. We introduce the notion of regular (boundary) poles- ular poles in terms of -points (i.e. pre-images of values with positive Carleson-Makarov -numbers
Comparison of elastic and inelastic analyses
Ammerman, D. J.; Heinstein, M. W.; Wellman, G. W.
1992-01-01
The use of inelastic analysis methods instead of the traditional elastic analysis methods in the design of radioactive material (RAM) transport packagings leads to a better understanding of the response of the package to mechanical loadings. Thus, better assessment of the containment, thermal protection, and shielding integrity of the package after a structural accident event can be made. A more accurate prediction of the package response can lead to enhanced safety and also allow for a more efficient use of materials, possibly leading to a package with higher capacity or lower weight This paper will discuss the advantages and disadvantages of using inelastic analysis in the design of RAM shipping packages. When using inelastic analysis the entire nonlinear response of the material must be known, including the effects of temperature changes and strain rate. There currently is not an acceptance criteria for this type of analysis that is approved by regulatory agencies. Inelastic analysis acceptance criteria based on failure stress, failure strain, or plastic energy density could be developed. For both elastic and inelastic analyses it is also important to include other sources of stress in the analyses, such as fabrication stresses, thermal stresses, stresses from bolt preloading, and contact stresses at material interfaces.
Hsu, John S.
2010-05-18
A method and apparatus in which a stator (11) and a rotor (12) define a primary air gap (20) for receiving AC flux and at least one source (23, 40), and preferably two sources (23, 24, 40) of DC excitation are positioned for inducing DC flux at opposite ends of the rotor (12). Portions of PM material (17, 17a) are provided as boundaries separating PM rotor pole portions from each other and from reluctance poles. The PM poles (18) and the reluctance poles (19) can be formed with poles of one polarity having enlarged flux paths in relation to flux paths for pole portions of an opposite polarity, the enlarged flux paths communicating with a core of the rotor (12) so as to increase reluctance torque produced by the electric machine. Reluctance torque is increased by providing asymmetrical pole faces. The DC excitation can also use asymmetric poles and asymmetric excitation sources. Several embodiments are disclosed with additional variations.
Is There Physics in Landau Poles ?
Rolf Tarrach
1995-02-03
Triviality and Landau poles are often greeted as harbingers of new physics at 1 TeV. After briefly reviewing the ideas behind this, a model of singular quantum mechanics is introduced. Its ultraviolet structure, as well as some features of its vacuum, related to triviality, very much parallel $\\lambda\\phi^4$. The model is solvable, exactly and perturbatively, in any dimension. From its analysis we learn that Landau poles do not appear in any exactly computed observable, but only in truncated perturbation theory, when perturbation theory is performed with the wrong sign coupling. If these findings apply to the standard model no new physics at 1 TeV should be expected but only challenges for theorists.
ABJM Membrane Instanton from Pole Cancellation Mechanism
Sanefumi Moriyama; Tomoki Nosaka
2015-01-21
The coefficients of the membrane instantons in the ABJM theory are known to be quadratic polynomials of the chemical potential. We show that, after deforming the ABJM theory into more general superconformal Chern-Simons theories labelled by (q,p) where the original ABJM theory corresponds to (q,p)=(1,1), we can decompose the membrane instanton into three types of non-perturbative effects with constant coefficients independent of the chemical potential. We find that, although these constants contain poles at certain values of q and p including the ABJM case, all of the poles cancel among themselves and the finite quadratic polynomial coefficients are reproduced at these values. This is similar to what happens between the membrane instantons and the worldsheet instantons in the ABJM theory.
Nonperturbative screening of the Landau pole
Francesco Giacosa; Ralf Hofmann
2007-04-19
Based on the trace anomaly for the energy-momentum tensor, an effective theory for the thermodynamics of the deconfining phase, and by assuming the asymptotic behavior to be determined by one-loop perturbation theory we compute the nonperturbative beta function for the fundamental coupling $g$ in SU(2) and SU(3) Yang-Mills theory. With increasing temperature we observe a very rapid approach to the perturbative running. The Landau pole is nonperturbatively screened.
Neutrino Astronomy at the South Pole
P. A. Toale; for the IceCube Collaboration
2006-07-01
IceCube is currently being built deep in the glacial ice beneath the South Pole. In its second year of construction, it is already larger than its predecessor, AMANDA. AMANDA continues to collect high energy neutrino and muon data as an independent detector until it is integrated with IceCube. After introducing both detectors, recent results from AMANDA and a status report on IceCube are presented.
The Cosmology of Composite Inelastic Dark Matter
Spier Moreira Alves, Daniele; Behbahani, Siavosh R.; /SLAC /Stanford U., ITP; Schuster, Philip; Wacker, Jay G.; /SLAC
2011-08-19
Composite dark matter is a natural setting for implementing inelastic dark matter - the O(100 keV) mass splitting arises from spin-spin interactions of constituent fermions. In models where the constituents are charged under an axial U(1) gauge symmetry that also couples to the Standard Model quarks, dark matter scatters inelastically off Standard Model nuclei and can explain the DAMA/LIBRA annual modulation signal. This article describes the early Universe cosmology of a minimal implementation of a composite inelastic dark matter model where the dark matter is a meson composed of a light and a heavy quark. The synthesis of the constituent quarks into dark hadrons results in several qualitatively different configurations of the resulting dark matter composition depending on the relative mass scales in the system.
UNIVERSITY OF CALIFORNIA Inelastic Neutron Scattering Study of the
Lawrence, Jon
UNIVERSITY OF CALIFORNIA IRVINE Inelastic Neutron Scattering Study of the Intermediate Valence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2 Inelastic Neutron Scattering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2.a Neutron Scattering Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2.b
Between the poles : locating physics majors in the expert-novice continuum
Gire, Elizabeth Ellen
2007-01-01
DISSERTATION Between the Poles: Locating Physics Majors inSAN DIEGO Between the Poles: Locating Physics Majors in the
Model independent determination of the {sigma} pole
Leutwyler, H.
2008-08-31
The first part of this report reviews recent developments at the interface between lattice work on QCD with light dynamical quarks, effective field theory and low energy precision experiments. Then I discuss how dispersion theory can be used to analyze the low energy structure of the {pi}{pi} scattering amplitude in a model independent manner. This leads to an exact formula for the mass and width of the lowest few resonances, in terms of observable quantities. As an application, I consider the pole position of the {sigma}, paying particular to error propagation in the numerical analysis. The report is based on work done in collaboration with Irinel Caprini and Gilberto Colangelo.
Keeler-Pennwalt Wood Pole Removal
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AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousand Cubic Feet) Sold toKeeler-Pennwalt-Wood-Pole-Removal Sign
Randomly poled crystals as a source of photon pairs
Jan Perina Jr; Jiri Svozilik
2011-01-04
Generation of photon pairs from randomly poled nonlinear crystals is investigated using analytically soluble model and numerical calculations. Randomly poled crystals are discovered as sources of entangled ultra broad-band signal and idler fields. Their photon-pair generation rates scale linearly with the number of domains. Entanglement times as short as several fs can be reached. Comparison with chirped periodically-poled structures is given and reveals close similarity.
A New Air Cerenkov Array at the South Pole
Delaware, University of
A New AirÂ Å¸ Cerenkov Array at the South Pole J.E. Dickinson a J.R. Gill a S.P. Hart b;a G.C. Hill a a University of Leeds, Leeds LS2 9JT, United Kingdom b AmundsenÂScott South Pole Station, Antarctica c array of airÂ Å¸ Cerenkov radiation detectors estabÂ lished at the South Pole. VULCAN operates
Sharp upper bounds on the number of the scattering poles
We study the scattering poles of a compactly supported “black box” perturbations of the Laplacian in Rn, n odd. We prove a sharp upper bound of the counting ...
On the Ramanujan Conjecture and Finiteness of Poles for Certain ...
Sep 2, 2000 ... On the Ramanujan Conjecture and Finiteness of Poles for Certain $L$-. Functions. Freydoon Shahidi. The Annals of Mathematics, Second ...
The energies and residues of the nucleon resonances N(1535) and N(1650)
R. A. Arndt; A. M. Green; R. L. Workman; S. Wycech
1998-07-03
We extract pole positions for the N(1535) and N(1650) resonances using two different models. The positions are determined from fits to different subsets of the existing $\\pi N\\to\\pi N$, $\\pi N\\to\\eta N$ and $\\gamma p\\to\\eta p$ data and found to be 1515(10)--i85(15)MeV and 1660(10)--i65(10)MeV, when the data is described in terms of two poles. Sensitivity to the choice of fitted data is explored. The corresponding $\\pi \\pi$ and $\\eta \\eta$ residues of these poles are also extracted.
Inelastic mechanics of sticky biopolymer networks
Lars Wolff; Pablo Fernandez; Klaus Kroy
2010-03-02
We propose a physical model for the nonlinear inelastic mechanics of sticky biopolymer networks with potential applications to inelastic cell mechanics. It consists in a minimal extension of the glassy wormlike chain (GWLC) model, which has recently been highly successful as a quantitative mathematical description of the viscoelastic properties of biopolymer networks and cells. To extend its scope to nonequilibrium situations, where the thermodynamic state variables may evolve dynamically, the GWLC is furnished with an explicit representation of the kinetics of breaking and reforming sticky bonds. In spite of its simplicity the model exhibits many experimentally established non-trivial features such as power-law rheology, stress stiffening, fluidization, and cyclic softening effects.
Inclusive Deep-Inelastic Scattering at HERA
Zhiqing Zhang; for the H1; ZEUS Collaborations
2014-12-19
This contribution covers three recent results on deep-inelastic scattering at HERA: (i) new measurements of the proton longitudinal structure function $F_L$ from H1 and ZEUS experiments, (ii) a dedicated NC cross section measurement from ZEUS in the region of high Bjorken $x$, and (iii) preliminary combination results of all HERA inclusive data published up to now by H1 and ZEUS, taking into account the experimental correlations between measurements.
Deep Inelastic Scattering -- Theory and Phenomenology
B. R. Webber
1996-07-26
Recent developments in theory and phenomenology relevant to deep inelastic lepton scattering are reviewed, concentrating on the following topics: Predicted behaviour of non-singlet and polarized structure functions at small $x$; Theoretical studies of saturation and unitarity effects at small $x$ in quarkonium scattering; Renormalons and higher twist contributions; Next-to-leading-order calculations of jet cross sections; Forward jet production as a probe of small-$x$ dynamics.
Flow of S-matrix poles for elementary quantum potentials
B. Belchev; S. G. Neale; M. A. Walton
2011-10-21
The poles of the quantum scattering matrix (S-matrix) in the complex momentum plane have been studied extensively. Bound states give rise to S-matrix poles, and other poles correspond to non-normalizable anti-bound, resonance and anti-resonance states. They describe important physics, but their locations can be difficult to find. In pioneering work, Nussenzveig performed the analysis for a square well/wall, and plotted the flow of the poles as the potential depth/height varied. More than fifty years later, however, little has been done in the way of direct generalization of those results. We point out that today we can find such poles easily and efficiently, using numerical techniques and widely available software. We study the poles of the scattering matrix for the simplest piece-wise flat potentials, with one and two adjacent (non-zero) pieces. For the finite well/wall the flow of the poles as a function of the depth/height recovers the results of Nussenzveig. We then analyze the flow for a potential with two independent parts that can be attractive or repulsive, the two-piece potential. These examples provide some insight into the complicated behavior of the resonance, anti-resonance and anti-bound poles.
Models for an alternative pole vault Jer^ome Hoepffner
Hoepffner, Jérôme
Models for an alternative pole vault J´er^ome Hoepffner June 14, 2012 Abstract Pole vault can discern two main approaches: one based on ex- perimental measurement of energies, forces wish to develop an alternative perspec- tive: come back to a model of a simpler structure in order
Test of factorization in diffractive deep inelastic scattering...
Office of Scientific and Technical Information (OSTI)
Test of factorization in diffractive deep inelastic scattering and photoproduction at HERA Citation Details In-Document Search Title: Test of factorization in diffractive deep...
Neutron inelastic scattering in natural Pb as a background in...
Office of Scientific and Technical Information (OSTI)
SCATTERING; ISOTOPES; LEAD; LEAD 206; LEAD 207; LEVELS; NEUTRONS; SCATTERING Inelastic neutron scattering on Pb isotopes can result in gamma rays near the signature endpoint...
Effect of thermal pole tip protrusion and disk roughness on slider disk contacts
Xu, Jianfeng; Kiely, James D.; Hsia, Yiao-Tee; Talke, Frank E.
2009-01-01
A, Weng R, Li F (2004) Pole-tip protrusion effect on high1b, the protrusion of the pole tip is shown due to the J.can occur, resulting in pole tip damage and wear of the
2,000-year record of atmospheric methyl bromide from a South Pole ice core
Saltzman, Eric S; Aydin, Murat; Tatum, Cheryl; Williams, Margaret B
2008-01-01
air from firn at the South Pole, Nature, 383, 231 – 235. 5METHYL BROMIDE FROM SOUTH POLE ICE CORE Butler, J. H. , M.of methyl chloride from a South Pole ice core: Evidence for
Mathiak, Krystyna A; Klasen, Martin; Weber, René; Ackermann, Hermann; Shergill, Sukhwinder S; Mathiak, Klaus
2011-01-01
Y: The Enigmatic temporal pole: a review of findings onS, Miyashita Y: Temporal pole activity during perception ofReward system and temporal pole contributions to affective
Above-Threshold Poles in Model-Independent Form Factor Parametrizations
Grinstein, B; Lebed, RF
2015-01-01
exact position z p of the pole is then given by Eqs. (26)– (for discussions on the relation of poles and resonances. 56,Above-Threshold Poles in Model-Independent Form Factor
Precise neutron inelastic cross section measurements
Negret, Alexandru [Horia Hulubei National Institute for Physics and Nuclear Engineering, Reactorului 30, 077125 Bucharest-Magurele (Romania)
2012-11-20
The design of a new generation of nuclear reactors requires the development of a very precise neutron cross section database. Ongoing experiments performed at dedicated facilities aim to the measurement of such cross sections with an unprecedented uncertainty of the order of 5% or even smaller. We give an overview of such a facility: the Gamma Array for Inelastic Neutron Scattering (GAINS) installed at the GELINA neutron source of IRMM, Belgium. Some of the most challenging difficulties of the experimental approach are emphasized and recent results are shown.
Charge quantisation without magnetic poles: a topological approach to electromagnetism
Romero Solha
2015-09-28
The present work provides a theoretical explanation for the quantisation of electric charges, an open problem since Millikan's oil drop experiment in 1909. This explanation is based solely on Maxwell's theory, it recasts Electromagnetic theory under the language of complex line bundles; therefore, neither magnetic poles nor quantum mechanics are invoked. The existence of magnetic poles was essentially the only theoretical explanation for charge quantisation (e.g. Dirac's magnetic pole), and there is no experimental data supporting their existence ---on the contrary, they have never been observed.
Charge quantisation without magnetic poles: a topological approach to electromagnetism
Romero Solha
2015-08-08
The present work provides a theoretical explanation for the quantisation of electric charges, an open problem since Millikan's oil drop experiment in 1909. This explanation is based solely on Maxwell's theory, it recasts Electromagnetic theory under the language of complex line bundles; therefore, neither magnetic poles nor quantum mechanics are invoked. The existence of magnetic poles was essentially the only theoretical explanation for charge quantisation (e.g. Dirac's magnetic pole), and there is no experimental data supporting their existence ---on the contrary, they have never been observed.
Simulations on the electromechanical poling of ferroelectric ceramics
Yin-Zhong Wu; Yong-Mei Tao
2007-12-06
Based on the two-step-switching model, the process of electromechanical poling of a ferroelectric ceramics is simulated. A difference of the remnant polarizations between two poling protocols (mechanical stress is applied before and after the application of poling field) is found from our simulations, which is also observed in experiment. An explanation is given to illustrate why the remnant polarization for the case that mechanical stress is loaded after the application of electric field is larger than the case that mechanical stress is loaded before the application of electric field. Our simulation results supply a proof for the validity of the two-step-switching model in the electromechanical poling of polycrystalline ferroelectric ceramics.
Radio-frequency probes of Antarctic ice at South Pole
Besson, David Zeke; Kravchenko, I.
2013-05-16
consistent with measurements in East Antarctica. Combined with other radio echo sounding data, we conclude that observed birefringent asymmetries at South Pole are generated entirely in the lower half of the ice sheet. By contrast, birefringent asymmetries...
Baryon photo-decay amplitudes at the pole
R. L. Workman; L. Tiator; A. Sarantsev
2013-04-15
We derive relations for baryon photo-decay amplitudes both for the Breit-Wigner and the pole positions. With an updated SAID partial wave analysis, technically similar to the earliest Virginia Tech analysis of photoproduction data, we compare photo-decay amplitudes at both resonance positions for a few selected nucleon resonances. Comparisons are made and a qualitative similarity, seen between the pole and Breit-Wigner values extracted by the Bonn-Gatchina group, is confirmed in the present study.
Biomass from Logging Residue and Mill Residue
Biomass from Logging Residue and Mill Residue in East Texas, 2008 by Curtis L. VanderSchaaf, Forest Resource Analyst October 2009 #12;N Introduction The abundance of woody biomass from East Texas forests. This report represents the most current data on the availability of woody biomass in the form of logging
Inelastic electron-vortex-beam scattering
Ruben Van Boxem; Bart Partoens; Jo Verbeeck
2015-03-16
Recent theoretical and experimental developments in the field of electron vortex beam physics have raised questions on what exactly this novelty in the field of electron microscopy (and other fields, such as particle physics) really provides. An important part in the answer to those questions lies in scattering theory. The present investigation explores various aspects of inelastic quantum scattering theory for cylindrically symmetric beams with orbital angular momentum. The model system of Coulomb scattering on a hydrogen atom provides the setting to address various open questions: How is momentum transferred? Do vortex beams selectively excite atoms, and how can one employ vortex beams to detect magnetic transitions? The analytical approach presented here provides answers to these questions. OAM transfer is possible, but not through selective excitation; rather, by pre- and post-selection one can filter out the relevant contributions to a specific signal.
Geometrical Scaling in Inelastic Inclusive Particle Production at the LHC
Praszalowicz, Michal
2015-01-01
Analyzing recent ALICE data on inelastic pp scattering at the LHC energies we show that charged particle distributions exhibit geometrical scaling (GS). We show also that the inelastic cross-section is scaling as well and that in this case the quality of GS is better than for multiplicities. Moreover, exponent $\\lambda$ characterizing the saturation scale is for the cross-section scaling compatible with the one found in deep inelastic ep scattering at HERA. Next, by parametrizing charged particles distributions by the Tsallis-like formula, we find a somewhat unexpected solution that still exhibits GS, but differs from the "standard" one where the Tsallis temperature is proportional to the saturation scale.
Geometrical Scaling in Inelastic Inclusive Particle Production at the LHC
Michal Praszalowicz; Anna Francuz
2015-07-29
Analyzing recent ALICE data on inelastic pp scattering at the LHC energies we show that charged particle distributions exhibit geometrical scaling (GS). We show also that the inelastic cross-section is scaling as well and that in this case the quality of GS is better than for multiplicities. Moreover, exponent $\\lambda$ characterizing the saturation scale is for the cross-section scaling compatible with the one found in deep inelastic ep scattering at HERA. Next, by parametrizing charged particles distributions by the Tsallis-like formula, we find a somewhat unexpected solution that still exhibits GS, but differs from the "standard" one where the Tsallis temperature is proportional to the saturation scale.
Inelastic transport In molecular junctions from first principles
Kim, Sejoong, Ph. D. Massachusetts Institute of Technology
2012-01-01
This work is dedicated to development of a first-principle approach to study electron-vibration interactions on quantum transport properties. In the first part we discuss a general implementation for inelastic transport ...
Use of inelastic design for radioactive material transportation packages
Heinstein, M.W.; Ammerman, D.J.
1993-12-01
There is much interest within the radioactive material transportation container design community in the use of inelastic analysis. In other industries where inelastic analysis is used in design there is typically an improved knowledge of the capacity of the structure and a more efficient use of material. This report describes the results of a program in which the incentives for inelastic analysis for radioactive material transport container design were investigated to determine if there are similar benefits. Detailed are the elastic and inelastic analyses of two containers subjected to impacts onto a rigid target following a thirty-foot free fall in end-on, side-on, and center-of-gravity- over-corner orientations.
Mechanics of inelastic deformation and delamination in paperboard
Xia, Qingxi, 1973-
2002-01-01
Paperboard is one of the most widely used materials. The inelastic deformation of paperboard plays a crucial role during many manufacturing processes (e.g., the converting process whereby paperboard is converted into a ...
Ising Spectroscopy II: Particles and poles at T>Tc
Alexander Zamolodchikov
2013-10-17
I discuss particle content of the Ising field theory (the scaling limit of the Ising model in a magnetic field), in particular the evolution of its mass spectrum under the change of the scaling parameter. I consider both real and pure imaginary magnetic field. Here I address the high-temperature regime, where the spectrum of stable particles is relatively simple (there are from one to three particles, depending on the parameter). My goal is to understand analytic continuations of the masses to the domain of the parameter where they no longer exist as the stable particles. I use the natural tool -- the $2\\to 2$ elastic scattering amplitude, with its poles associated with the stable particles, virtual and resonance states in a standard manner. Concentrating attention on the "real" poles (those corresponding to stable and virtual states) I propose a scenario on how the pattern of the poles evolves from the integrable point $T=T_c,\\ H\
Eliminating spurious poles from gauge-theoretic amplitudes
Andrew Hodges
2009-05-11
This note addresses the problem of spurious poles in gauge-theoretic scattering amplitudes. New twistor coordinates for the momenta are introduced, based on the concept of dual conformal invariance. The cancellation of spurious poles for a class of NMHV amplitudes is greatly simplified in these coordinates. The poles are eliminated altogether by defining a new type of twistor integral, dual to twistor diagrams as previously studied, and considerably simpler. The geometric features indicate a supersymmetric extension of the formalism at least to all NMHV amplitudes, allowing the dihedral symmetry of the super-amplitude to be made manifest. More generally, the definition of `momentum-twistor' coordinates suggests a powerful new approach to the study of scattering amplitudes.
Pole wave-function renormalization prescription for unstable particles
Yong Zhou
2007-04-23
We base a new wave-function renormalization prescription on the pole mass renormalization prescription, in which the Wave-function Renormalization Constant (WRC) is extracted by expanding the particle's propagator around its pole, rather than its physical mass point as convention. We find the difference between the new and the conventional WRC is gauge-parameter dependent for unstable particles beyond one-loop level, which will lead to some physical results gauge dependent under the conventional wave-function renormalization prescription beyond one-loop level.
Bassetti, Federico
Introduction Central Limit Problem for inelastic Kac model Main results Beyond Kac's equation Speed;Introduction Central Limit Problem for inelastic Kac model Main results Beyond Kac's equation Summary developments #12;Introduction Central Limit Problem for inelastic Kac model Main results Beyond Kac's equation
Duality, Residues, Fundamental class
2011-05-22
May 22, 2011 ... Duality, Residues, Fundamental class. Joseph Lipman. Purdue University. Department of Mathematics lipman@math.purdue.edu. May 22 ...
A magnetic polarity stratigraphy and a corresponding paleomagnetic pole position
Olsen, Paul E.
ABSTRACT A magnetic polarity stratigraphy and a corresponding paleomagnetic pole position in mean direction and pass reversal tests.The magnetic polarity sequence consists of 11 magnetozones of outcrop sites have outlined a magnetic polarity stratigraphy (McIntosh et al., 1985; Witte and Kent, 1989
.) · Ancillary flight information, field catalogs, data quality reports, software, and documentation · Pole products and user documentation. Files are in ASCII text format. Products include: · A comprehensive merged structure data: 1) greenhouse gases and carbon cycle gases, 2) ozone and water vapor, 3) black carbon
On the gauge independence of the fermion pole mass
Ashok K. Das; R. R. Francisco; J. Frenkel
2013-08-23
We study the question of complete gauge independence of the fermion pole mass by choosing a general class of gauge fixing which interpolates between the covariant, the axial and the Coulomb gauges for different values of the gauge fixing parameters. We derive the Nielsen identity describing the gauge parameter variation of the fermion two point function in this general class of gauges. Furthermore, we relate the denominator of the fermion propagator to the two point function. This then allows us to study directly the gauge parameter dependence of the denominator of the propa- gator using the Nielsen identity for the two point function. This leads to a simple proof that, when infrared divergences and mass shell singularities are not present at the pole, the fermion pole mass is gauge independent, in the complete sense, to all orders in perturbation theory. Namely, the pole is not only independent of the gauge fixing parameters, but has also the same value in both covariant and non-covariant gauges.
Biomass from Logging Residue and Mill Residue
as a renewable energy resource or for chemical extraction. This report represents the most current data harvesting or are cut off the central stem of the tree due to a merchantability standard. Limbs refer for energy production or chemical extraction. Table 1 shows the logging residue available in East Texas
Inelastic analysis acceptance criteria for radioactive material transportation containers
Ammerman, D.J.; Ludwigsen, J.S.
1993-06-01
The design criteria currently used in the design of radioactive material (RAM) transportation containers are taken from the ASME Boiler and Pressure Vessel Code (ASME, 1992). These load-based criteria are ideally suited for pressure vessels where the loading is quasistatic and all stresses are in equilibrium with externally applied loads. For impact events, the use of load-based criteria is less supportable. Impact events tend to be energy controlled, and thus, energy-based acceptance criteria would appear to be more appropriate. Determination of an ideal design criteria depends on what behavior is desired. Currently there is not a design criteria for inelastic analysis for RAM nation packages that is accepted by the regulatory agencies. This lack of acceptance criteria is one of the major factors in limiting the use of inelastic analysis. In this paper inelastic analysis acceptance criteria based on stress and strain-energy density will be compared for two stainless steel test units subjected to impacts onto an unyielding target. Two different material models are considered for the inelastic analysis, a bilinear fit of the stress-strain curve and a power law hardening model that very closely follows the stress-strain curve. It is the purpose of this paper to stimulate discussion and research into the area of strain-energy density based inelastic analysis acceptance criteria.
deep highresolution optical log dust, ash, and stratigraphy South Pole glacial
Woschnagg, Kurt
deep highresolution optical log dust, ash, and stratigraphy South Pole glacial Bramall, Bay, Rohde, Price (2005), highresolution optical dust, stratigraphy South Pole glacial Geophys. Res. Lett
Old Y-12 utility poles put to use for recreation and training...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Old Y-12 utility poles ... Old Y-12 utility poles put to use for recreation and training Posted: May 31, 2012 - 8:25am Maintenance Support and Utilities Management personnel at the...
Shirokoff, Erik D.
2011-01-01
iii 2 The South Pole Telescope 2.1 The Telescope . . . . .modifications . . . . II The South Pole Telescope SZ Cameraand exciting as the South Pole Telescope. Fewer still do so
Inelastic neutron scattering in valence fluctuation compounds
Jon M Lawrence
2011-02-15
The valence fluctuation compounds are rare earth intermetallics where hybridization of the nearly-localized 4f electrons with the conduction electrons leads to incorporation of the 4f's into the itinerant states. This hybridization slows down the conduction electrons and hence gives them a heavy effective mass, justifying application of the term 'heavy Fermion' (HF) to these materials. During the project period, we grew large single crystals of several such compounds and measured their properties using both standard thermodynamic probes and state-of-the-art inelastic neutron scattering. We obtained three main results. For the intermediate valence compounds CePd{sub 3} and YbAl{sub 3}, we showed that the scattering of neutrons by the fluctuations of the 4f magnetic moment does not have the momentum dependence expected for the itinerant heavy mass state; rather, the scattering is more typical of a localized spin fluctuation. We believe that incoherent scattering localizes the excitation. For the heavy Fermion compound Ce(Ni{sub 0.935}Pd{sub 0.065}){sub 2}Ge{sub 2}, which sits at a T = 0 critical point for transformation into an antiferromagnetic (AF) phase, we showed that the scattering from the AF fluctuations does not exhibit any of the divergences that are expected at a phase transition. We speculate that alloy disorder profoundly suppresses the growth of the fluctuating AF regions, leading to short range clusters rather than regions of infinite size. Finally, we explored the applicability of key concepts used to describe the behavior of rare earth heavy Fermions to uranium based HF compounds where the 5f electrons are itinerant as opposed to localized. We found that scaling laws relating the spin fluctuation energy measured in neutron scattering to the low temperature specific heat and susceptibility are valid for the uranium compounds, once corrections are made for AF fluctuations; however, the degeneracy of the high temperature moment is smaller than expected for rare-earth-like Hund's rule behavior, essentially because the orbital moment is suppressed for itinerant 5f electrons. We also found that the standard local-moment-based theory of the temperature dependence of the specific heat, susceptibility and neutron scattering fails badly for URu{sub 2}Zn{sub 20} and UCo{sub 2}Zn{sub 20}, even though the theory is phenomenally successful for the closely related rare earth compound YbFe{sub 2}Zn{sub 20}. Both these results highlight the distinction between the itineracy of the 5f's and the localization of the 4f's. It is our hope that these results are sufficiently significant as to stimulate deeper investigation of these compounds.
LETTER Earth Planets Space, 55, 153157, 2003 Asymmetric behavior of magnetic dip poles
Dormy, Emmanuel
LETTER Earth Planets Space, 55, 153Â157, 2003 Asymmetric behavior of magnetic dip poles M. Mandea (Received November 8, 2002; Revised February 3, 2003; Accepted March 3, 2003) The north magnetic dip pole the dipolar field as a whole, but only the north magnetic pole. We demonstrate how this rapid displacement
Cattin, Rodolphe
poles M. Neres,1 E. Font,1 J. M. Miranda,1 P. Camps,2 P. Terrinha,3 and J. Mirão4 Received 29 November is to reconcile Iberian paleomagnetic data with paleomagnetic data of the neighboring plates and with Euler poles arises from the paucity of reliable paleomagnetic poles with satisfactory statistical criteria and age
Cu, Cr and As distribution in soils adjacent to pressure-treated decks, fences and poles
Ma, Lena
Cu, Cr and As distribution in soils adjacent to pressure-treated decks, fences and poles Tait with depth in areas close to CCA-treated poles. Abstract Chromated copper arsenate (CCA)-treated wood has), and copper (Cu), in soils surrounding CCA-treated wood structures such as decks, fences and poles; and (2
BANDPASS ADAPTIVE POLE-ZERO FILTERING John J. ShynkBernardWidrow
Widrow, Bernard
BANDPASS ADAPTIVE POLE-ZERO FILTERING John J. ShynkBernardWidrow Information Systems Laboratory Department of Electrical Engineering Stanford University Stanford, CA 94305 Abstract - An adaptive pole filterspermittheadaptivefiltertoberealizedina parallel form of first-ordersections. Simple monitoring of thefilter poles duringadaptation
Noncollinear second-harmonic generation in sub-micrometer-poled RbTiOPO4
Arie, Ady
Noncollinear second-harmonic generation in sub-micrometer-poled RbTiOPO4 S. Moscovich, A. Arie, R generated noncollinear quasi-phase-matched second harmonic wave in an RbTiOPO4 crystal that was poled using systematic nonlinear frequency conversion study of samples produced by the HV-AFM method. The short poling
DISCRETE-TIME ROBUST POLE-PLACEMENT DESIGN THROUGH GLOBAL OPTIMIZATION
Neumaier, Arnold
DISCRETE-TIME ROBUST POLE-PLACEMENT DESIGN THROUGH GLOBAL OPTIMIZATION Miguel Ayala Botto ,1 Robert-mail: r.babuska@its.tudelft.nl Abstract: A robust pole placement controller design method is presented Keywords: robust control, pole assignment, uncertainty, genetic algorithms, helicopter dynamics. 1
Nested Saturation with Guaranteed Real Poles1 Eric N. Johnson2
Johnson, Eric N.
Nested Saturation with Guaranteed Real Poles1 Eric N. Johnson2 and Suresh K. Kannan 3 School the special case of n- integrators with one input. Using this law however, the closed loop system pole of the closed loop poles on the negative real axis. 1 Introduction The problem addressed involves the global
Double-Pole Approximation in Time-Dependent Density Functional Theory
Gross, E.K.U.
Double-Pole Approximation in Time-Dependent Density Functional Theory H. Appel and E.K.U. Gross-dependent density func- tional theory (TDDFT) is given. This extends the single-pole approximation (SPA) to two strongly- coupled poles. The analysis provides both an illustration of how TDDFT works when strong exchange
Wang, Gwo-Ching
Texture evolution of vertically aligned biaxial tungsten nanorods using RHEED surface pole figure biaxial tungsten nanorods using RHEED surface pole figure technique R Krishnan1 , Y Liu2 , C Gaire2 , L (RHEED) pole figure technique. The initial polycrystalline film begins to show the inception of biaxial
Microsymposium 34, MS065, 2001 PERMANENTLY SHADOWED AREAS AT THE LUNAR POLES. V. V. Shevchenko1
Shevchenko, Vladislav
Microsymposium 34, MS065, 2001 PERMANENTLY SHADOWED AREAS AT THE LUNAR POLES. V. V. Shevchenko1 , E a maximum of 1,95Â° above the horizon at the lunar poles. Therefore topographic depressions near the lunar poles may contain water ice deposits. We have used the Morphological catalogue of the craters
BUCKLING BEHAVIOUR OF WOODEN POLES J. Savic" S.H. Rizkalla2
BUCKLING BEHAVIOUR OF WOODEN POLES by J. Savic" S.H. Rizkalla2 , D. Polyzois3 , and C. K. Wong' ABSTRACT Woodc:n poles are popular structural elements currently used by Manitoba Hydro for distribution lines and transmission towers. In recent years, a considerable number of such poles have failed duc
All-Pole Modelling of Mixed Excitation Signals Peter Kabal 1 and Bastiaan Kleijn 2
Kabal, Peter
All-Pole Modelling of Mixed Excitation Signals Peter Kabal 1 and Bastiaan Kleijn 2 1 Dept of a noise-like excitation and a periodic ex- citation. As such it is an extension of the Discrete All-Pole, the Discrete All-Pole (DAP) model introduced by El-Jaroudi and Makhoul [1] provides a frame- work for modelling
Structures of resonances and poles in isoscattering microwave networks and graphs
Structures of resonances and poles in isoscattering microwave networks and graphs M. Lawniczak1, A of resonances and poles of the determinant of the scattering matrices [3]. Using these characteristics we study the poles of the amplitude of the determinant of the theoretically evaluated scattering matrix
Barycentric rational interpolation with no poles and high rates of approximation
Hormann, Kai
Barycentric rational interpolation with no poles and high rates of approximation Michael S. Floater to control the occurrence of poles. In this paper we propose and study a family of barycentric rational inter- polants that have no real poles and arbitrarily high approximation orders on any real interval, regardless
Moore, John Barratt
IEEETJMNSACTIONSONAUTOMATICCONTROL,VOL. 34, NO. 3, MARCH 1989 367 CERTAINTY EQUIVALENCE POLE-ASSIGNMENT :; ~ :.. . .. . .. . . . . .. . . . . . . . . . . . . . . . . . . . . .. . .. . . .. .. . . . . a u 0 m w 0, WI :? y o A ..0 10 .20 30 40 50 TIME (a) CAUTIOUS POLE-ASSIGNMENT t I v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 20 30 40 50 TIME (b) CENTRAL TENOENCY POLE-ASSIGNMENT o t . m : u !. No g
Exact WKB analysis of a Schrodinger equation with a merging triplet of two simple poles and
RIMSÂ1735 Exact WKB analysis of a SchrË?odinger equation with a merging triplet of two simple poles #12; Exact WKB analysis of a SchrË?odinger equation with a merging triplet of two simple poles and one WKB analysis of an M2P1T (merging two simple poles and one simple turning point) SchrË?odinger equation
Soliton Solutions with Real Poles in the Alekseev formulation of the Inverse-Scattering method
Soliton Solutions with Real Poles in the Alekseev formulation of the Inverse-Scattering method S of Alekseev is presented which permits real-pole soliton solutions of the Ernst equations to be considered. This is achieved by adopting distinct real poles in the scattering matrix and its inverse. For the case in which
TREND a low noise terahertz receiver user instrument for AST/RO at the South Pole
Yngvesson, K. Sigfrid
TREND a low noise terahertz receiver user instrument for AST/RO at the South Pole Eyal Gerechta diameter AST/RO submillimeter wave telescope at the Amundsen/Scott South Pole Station. TREND is scheduled of special interest. The South Pole Station is the best available site for THz observations due to the very
Astronomical Coordinate Systems \\What good are Mercator's North Poles and Equators
Walter, Frederick M.
CEN 511 Astronomical Coordinate Systems \\What good are Mercator's North Poles and Equators Tropics conversions. Celestial Based on the terrestrial globe. The Celestial equator and poles are projections of the terrestrial equator and poles. Celestial coordinates are measured in Right Ascension (RA; ), along the equator
Jacobi-Davidson Methods and Preconditioning with Applications in Pole-zero Analysis
Eindhoven, Technische Universiteit
Jacobi-Davidson Methods and Preconditioning with Applications in Pole-zero Analysis J. Rommes 1 , H equation. 1 Introduction Pole-zero analysis is used in electrical engineering to analyze the stability of electric circuits [6, 9]. For example, if a circuit is designed to be an oscillator, pole-zero analysis
Vol. 103, No. 1 DUKE MATHEMATICAL JOURNAL 2000 PERTURBATION OF SCATTERING POLES FOR HYPERBOLIC
Petridis, Yiannis
Vol. 103, No. 1 DUKE MATHEMATICAL JOURNAL Â© 2000 PERTURBATION OF SCATTERING POLES FOR HYPERBOLIC spectrum, a crucial role is played by the scattering poles. They appear in the analog of Weyl's law is the fact that imbedded eigenvalues become scattering poles under perturbation (see [25]). In this work we
The Application of Preconditioned Jacobi-Davidson Methods in Pole-zero
Eindhoven, Technische Universiteit
The Application of Preconditioned Jacobi-Davidson Methods in Pole-zero Analysis J. Rommes 1 , C will be given. 1 Introduction Pole-zero analysis is used in electrical engineering to analyse the stability of electric circuits [10,11,14]. For example, if a circuit is designed to be an os- cillator, pole
Skogestad, Sigurd
Achievable performance of multivariable systems with unstable zeros and poles K. HAVRE{{ and S) zeros and poles in multivariable feedback systems. We generalize previously known controller depend on the plant G. The bounds are tight for cases with only one RHP-zero or pole. For plants with RHP
Resonance poles in the complex-frequency domain for an oscillating barrier R. Lefebvre*
Moiseyev, Nimrod
Resonance poles in the complex-frequency domain for an oscillating barrier R. Lefebvre* Laboratoire picture applied to a periodic Hamiltonian. It is possible to interpret it as due to the poles use of the data obtained for the static barrier. The existence of these poles is not limited
Fussman, Gregor
and Pole Cells at the Base of the Holometabola Jeremy A. Lynch1 *, Orhan O¨ zu¨ ak1 , Abderrahman Khila2 at the posterior pole of the oocyte. The gene oskar (osk) is both necessary and sufficient for assembling and pole cells at the base of the holometabolous insects and that losses of osk are correlated with changes
TUNA: Pole-and-Line Fishing Trials In Central and Western Pacific
TUNA: Pole-and-Line Fishing Trials In Central and Western Pacific R.N . Uchida and R .F . Sumida baiting and fishing data obtained aboard the Honolulu -based pole -and -line fishing vessel 'Anela in 1971 for the Angel Fishing Company of Honolulu. It was designed for pole -and - line fishing with live
Transient Simulation of On-Chip Transmission Lines via Exact Pole Extraction
Friedman, Eby G.
Transient Simulation of On-Chip Transmission Lines via Exact Pole Extraction Guoqing Chen and Eby G response at the far end of a transmission line is proposed in this paper. Unlike approximating the poles by truncating the transfer function or matching moments, the exact poles of an interconnect system
Permanent shadow in simple craters near the lunar poles D. Ben J. Bussey,1
Spudis, Paul D.
Permanent shadow in simple craters near the lunar poles D. Ben J. Bussey,1 Paul G. Lucey,1 Donovan, 7500 km2 and 6500 km2 , for the north and south pole respectively. These values were obtained, to investigate the size and latitudinal extent of permanently shadowed regions near the lunar poles. Craters
Fejer, Martin M.
June 15, 1996 / Vol. 21, No. 12 / OPTICS LETTERS 857 Photorefractive effects in periodically poled-state photorefractive index perturbations caused by a given optical irradiance distribution in a periodically poled are reduced compared with those in a homogeneously poled crystal by approximately the square of the product
Exact WKB analysis of a Schrodinger equation with a merging triplet of two simple poles and
RIMS-1735 Exact WKB analysis of a SchrÂ¨odinger equation with a merging triplet of two simple poles #12;Exact WKB analysis of a SchrÂ¨odinger equation with a merging triplet of two simple poles and one WKB analysis of an M2P1T (merging two simple poles and one simple turning point) SchrÂ¨odinger equation
South Pole Telescope Software Systems: Control, Monitoring, and Data Acquisition
Story, K; Ade, P; Aird, K A; Austermann, J E; Beall, J A; Becker, D; Bender, A N; Benson, B A; Bleem, L E; Britton, J; Carlstrom, J E; Chang, C L; Chiang, H C; Cho, H-M; Crawford, T M; Crites, A T; Datesman, A; de Haan, T; Dobbs, M A; Everett, W; Ewall-Wice, A; George, E M; Halverson, N W; Harrington, N; Henning, J W; Hilton, G C; Holzapfel, W L; Hoover, S; Huang, N; Hubmayr, J; Irwin, K D; Karfunkle, M; Keisler, R; Kennedy, J; Lee, A T; Li, D; Lueker, M; Marrone, D P; McMahon, J J; Mehl, J; Meyer, S S; Montgomery, J; Montroy, T E; Nagy, J; Natoli, T; Nibarger, J P; Niemack, M D; Novosad, V; Padin, S; Pryke, C; Reichardt, C L; Ruhl, J E; Saliwanchik, B R; Sayre, J T; Schaffer, K K; Shirokoff, E; Smecher, G; Stalder, B; Tucker, C; Vanderlinde, K; Vieira, J D; Wang, G; Williamson, R; Yefremenko, V; Yoon, K W; Young, E; 10.1117/12.925808
2012-01-01
We present the software system used to control and operate the South Pole Telescope. The South Pole Telescope is a 10-meter millimeter-wavelength telescope designed to measure anisotropies in the cosmic microwave background (CMB) at arcminute angular resolution. In the austral summer of 2011/12, the SPT was equipped with a new polarization-sensitive camera, which consists of 1536 transition-edge sensor bolometers. The bolometers are read out using 36 independent digital frequency multiplexing (\\dfmux) readout boards, each with its own embedded processors. These autonomous boards control and read out data from the focal plane with on-board software and firmware. An overall control software system running on a separate control computer controls the \\dfmux boards, the cryostat and all other aspects of telescope operation. This control software collects and monitors data in real-time, and stores the data to disk for transfer to the United States for analysis.
HADES - Hydrophone for Acoustic Detection at South Pole
Benjamin Semburg; for the IceCube Collaboration
2008-11-07
The South Pole Acoustic Test Setup (SPATS) is located in the upper part of the optical neutrino observatory IceCube, currently under construction. SPATS consists of four strings at depths between 80 m and 500 m below the surface of the ice with seven stages per string. Each stage is equipped with an acoustic sensor and a transmitter. Three strings (string A-C) were deployed in the austral summer 2006/07. SPATS was extended by a fourth string (string D) with second generation sensors and transmitters in 2007/08. One second generation sensor type HADES (Hydrophone for Acoustic Detection at South Pole) consists of a ring-shaped piezo-electric element coated with polyurethane. The development of the sensor, optimization of acoustic transmission by acoustic impedance matching and first in-situ results will be discussed.
Office of Environmental Management (EM)
Hanford Tank Waste Residuals DOE HLW Corporate Board November 6, 2008 Chris Kemp, DOE ORP Bill Hewitt, YAHSGS LLC Hanford Tanks & Tank Waste * Single-Shell Tanks (SSTs) - 27...
Automatic Pole and Q-Value Extraction for RF Structures
C. Potratz, H.-W. Glock, U. van Rienen, F. Marhauser
2011-09-01
The experimental characterization of RF structures like accelerating cavities often demands for measuring resonant frequencies of Eigenmodes and corresponding (loaded) Q-values over a wide spectral range. A common procedure to determine the Q-values is the -3dB method, which works well for isolated poles, but may not be applicable directly in case of multiple poles residing in close proximity (e.g. for adjacent transverse modes differing by polarization). Although alternative methods may be used in such cases, this often comes at the expense of inherent systematic errors. We have developed an automation algorithm, which not only speeds up the measurement time significantly, but is also able to extract Eigenfrequencies and Q-values both for well isolated and overlapping poles. At the same time the measurement accuracy may be improved as a major benefit. To utilize this procedure merely complex scattering parameters have to be recorded for the spectral range of interest. In this paper we present the proposed algorithm applied to experimental data recorded for superconducting higher-order-mode damped multi-cell cavities as an application of high importance.
Pole-phase modulated toroidal winding for an induction machine
Miller, John Michael (Saline, MI); Ostovic, Vlado (Weinheim, DE)
1999-11-02
A stator (10) for an induction machine for a vehicle has a cylindrical core (12) with inner and outer slots (26, 28) extending longitudinally along the inner and outer peripheries between the end faces (22, 24). Each outer slot is associated with several adjacent inner slots. A plurality of toroidal coils (14) are wound about the core and laid in the inner and outer slots. Each coil occupies a single inner slot and is laid in the associated outer slot thereby minimizing the distance the coil extends from the end faces and minimizing the length of the induction machine. The toroidal coils are configured for an arbitrary pole phase modulation wherein the coils are configured with variable numbers of phases and poles for providing maximum torque for cranking and switchable to a another phase and pole configuration for alternator operation. An adaptor ring (36) circumferentially positioned about the stator improves mechanical strength, and provides a coolant channel manifold (34) for removing heat produced in stator windings during operation.
INELASTIC NEUTRON SCATTERING SELECTION RULES OF 03B1 HgI2 M. SIESKIND
Boyer, Edmond
899 INELASTIC NEUTRON SCATTERING SELECTION RULES OF 03B1 HgI2 M. SIESKIND Laboratoire de The inelastic neutron scattering selection rules of 03B1 HgI2 in the directions 0394, 03A3 and 039B are derived Abstracts 63.20D Introduction. - Inelastic neutron scattering is a powerful technique for the determination
Residual stress relief due to fatigue in tetragonal lead zirconate titanate ceramics
Hall, D. A.; Mori, T. [School of Materials, University of Manchester, Grosvenor St., Manchester M1 7HS (United Kingdom); Comyn, T. P. [Institute for Materials Research, Woodhouse Lane, University of Leeds, LS2 9JT (United Kingdom); Ringgaard, E. [Meggitt Sensing Systems, Hejreskovvej 18A, 3490 Kvistgaard (Denmark); Wright, J. P. [ESRF, 6 Rue Jules Horowitz, BP-220, 38043 Grenoble Cedex (France)
2013-07-14
High energy synchrotron XRD was employed to determine the lattice strain {epsilon}{l_brace}111{r_brace}and diffraction peak intensity ratio R{l_brace}200{r_brace}in tetragonal PZT ceramics, both in the virgin poled state and after a bipolar fatigue experiment. It was shown that the occurrence of microstructural damage during fatigue was accompanied by a reduction in the gradient of the {epsilon}{l_brace}111{r_brace}-cos{sup 2} {psi} plot, indicating a reduction in the level of residual stress due to poling. In contrast, the fraction of oriented 90 Degree-Sign ferroelectric domains, quantified in terms of R{l_brace}200{r_brace}, was not affected significantly by fatigue. The change in residual stress due to fatigue is interpreted in terms of a change in the average elastic stiffness of the polycrystalline matrix due to the presence of inter-granular microcracks.
Production of Charged Hadrons in Muon Deep Inelastic Scattering
Mohammed Sultan Al-Buriahi; Mohammed Tarek Hussein; Mohammed Tawfik Ghoneim
2015-08-06
The production of charged hadrons, in muon Deep inelastic scattering (DIS), at light and heavy target is presented. The particles produced by the interaction with Xenon (Xe) is compared with that produced by the interaction with Deuteron (D), to obtain information on cascading process, forward-backward productions, and the rapidity distribution in different bins of the invariant mass of the interacting system W.
Leading proton production in deep inelastic scattering at HERA
Leading proton production in deep inelastic 1 scattering at HERA 2 ZEUS Collaboration 3 Draft, with a #28;nal-state proton carrying a large fraction of the incoming proton energy, x L > 0 photon virtualities Q 2 > 3 GeV 2 and mass of the photon-proton sys- tem 45
The Physics of Deep-Inelastic Scattering at HERA
Cristinel Diaconu
2007-11-12
In this paper an introduction to the physics of deep-inelastic scattering is given together with an account of some of the most recent results on the proton structure obtained in electron-- and positron--proton collisions at the HERA collider.
Role of the nuclear vector potential in deep inelastic scattering
W. Detmold; G. A. Miller; J. R. Smith
2005-09-15
We study the influence of the strong nuclear vector potential, treated using the mean-field approximation, in deep inelastic scattering. A consistent treatment of the electromagnetic current operator, combined with the use of the operator product expansion is presented and discussed.
SNAP sky background at the north ecliptic pole
Aldering, Greg
2002-07-01
I summarize the extant direct and indirect data on the sky background SNAP will see at the North Ecliptic Pole over the wavelength range 0.4 < {lambda} < 1.7 {micro}m. At the spatial resolution of SNAP the sky background due to stars and galaxies is resolved, so the only source considered is zodiacal light. Several models are explored to provide interpolation in wavelength between the broadband data from HST and COBE observations. I believe the input data are now established well enough that the accuracy of the sky background presented here is sufficient for SNAP simulations, and that it will stand up to scrutiny by reviewers.
Pole placement design for linear multivariable control systems
Keel, Leehyun
1982-01-01
. 8893 32. 6274 -48. 5512 -108. 257 6. 93611 36. 2073 -43. 4464. -45. 3662 -13. 3483 -60. 2753 27. 2660 -0. 75720 ? ZO. 6834 -Z5. 3096 5. 45564 -3. 32199 14. . 0371 Condition No. of X = 9249. 36803 Closed Loop System Poles -3. 50001-3. 49998jy -3.... 50001+3. 49998j -2. 00005-1. 99998j& -2. 00005+1. 99998j -2 49994-2. 49995js -2 49994+ 2 49995j -4 . 99940-0, 99980j, -4 . 99940+0 . 99980j -4. 50091 -4. 00025 B the new al orithm tt com anion form 0, -1146600 ? 2341990 -2286968 -1288684 -576460...
Edge Detection, Cosmic Strings and the South Pole Telescope
Andrew Stewart; Robert Brandenberger
2009-01-07
We develop a method of constraining the cosmic string tension $G\\mu$ which uses the Canny edge detection algorithm as a means of searching CMB temperature maps for the signature of the Kaiser-Stebbins effect. We test the potential of this method using high resolution, simulated CMB temperature maps. By modeling the future output from the South Pole Telescope project (including anticipated instrumental noise), we find that cosmic strings with $G\\mu > 5.5\\times10^{-8}$ could be detected.
Kinematic dynamo wave in the vicinity of the solar poles
Victor Galitski; D. D. Sokoloff
2001-04-27
We consider a dynamo wave in the solar convective shell for the kinematic $\\alpha\\omega$-dynamo model. The spectrum and eigenfunctions of the corresponding equations are derived analytically with the aid of the WKB method. Our main aim here is to investigate the dynamo wave behavior in the vicinity of the solar poles. Explicit expressions for the incident and reflected waves are obtained. The reflected wave is shown to be relatively weak in comparison to the incident wave. The phase shifts and the ratio of amplitudes of the two waves are found.
North Pole, Alaska: Energy Resources | Open Energy Information
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland:NPI VenturesNew Hampshire:source History ViewLittlePerry, Ohio:NorthPole,
Pole placement design for quantum systems via coherent observers
Zibo Miao; Matthew R. James; Valery A. Ugrinovskii
2015-09-17
We previously extended Luenberger's approach for observer design to the quantum case, and developed a class of coherent observers which tracks linear quantum stochastic systems in the sense of mean values. In light of the fact that the Luenberger observer is commonly and successfully applied in classical control, it is interesting to investigate the role of coherent observers in quantum feedback. As the first step in exploring observer-based coherent control, in this paper we study pole-placement techniques for quantum systems using coherent observers, and in such a fashion, poles of a closed-loop quantum system can be relocated at any desired locations. In comparison to classical feedback control design incorporating the Luenberger observer, here direct coupling between a quantum plant and the observer-based controller are allowed to enable a greater degree of freedom for the design of controller parameters. A separation principle is presented, and we show how to design the observer and feedback independently to be consistent with the laws of quantum mechanics. The proposed scheme is applicable to coherent feedback control of quantum systems, especially when the transient dynamic response is of interest, and this issue is illustrated in an example.
Liquid Argon Cryogenic Detector Calibration by Inelastic Scattering of Neutrons
Sergey Polosatkin; Evgeny Grishnyaev; Alexander Dolgov
2014-07-10
A method for calibration of cryogenic liquid argon detector response to recoils with certain energy -8.2 keV - is proposed. The method utilizes a process of inelastic scattering of monoenergetic neutrons produced by fusion DD neutron generator. Features of kinematics of inelastic scattering cause sufficient (forty times) increase in count rate of useful events relative to traditional scheme exploited elastic scattering with the same recoil energy and compatible energy resolution. The benefits of the proposed scheme of calibration most well implemented with the use of tagged neutron generator as a neutron source that allows to eliminate background originated from casual coincidence of signals on cryogenic detector and additional detector of scattered neutrons.
Discovering Inelastic Thermal-Relic Dark Matter at Colliders
Izaguirre, Eder; Shuve, Brian
2015-01-01
Dark Matter particles with inelastic interactions are ubiquitous in extensions of the Standard Model, yet remain challenging to fully probe with existing strategies. We propose a series of powerful searches at hadron and lepton colliders that are sensitive to inelastic dark matter dynamics. In representative models, we find that the LHC and BaBar could offer strong sensitivity to the thermal-relic dark matter parameter space for dark matter masses between ~100 MeV-100 GeV and fractional mass-splittings above the percent level; future searches at Belle II with a dedicated monophoton trigger could also offer sensitivity to thermal-relic scenarios with masses below a few GeV. Thermal scenarios with either larger masses or splittings are largely ruled out; lower masses remain viable yet may be accessible with other search strategies.
Universal Relation for the Inelastic Two-Body Loss Rate
Eric Braaten; H. -W. Hammer
2014-01-08
Strongly-interacting systems consisting of particles that interact through a large scattering length satisfy universal relations that relate many of their central properties to the contact, which measures the number of pairs with small separations. We use the operator product expansion of quantum field theory to derive the universal relation for the inelastic 2-body loss rate. A simple universal relation between the loss rate and the contact is obtained by truncating the expansion after the lowest dimension operator. We verify the universal relation explicitly by direct calculations in the low-density limit at nonzero temperature. This universal relation can be tested experimentally using ultracold quantum gases of atoms in hyperfine states that have an inelastic spin-relaxation channel.
Power Corrections and Renormalons in Deep Inelastic Structure Functions
M. Dasgupta; B. R. Webber
1996-04-23
We study the power corrections (infrared renormalon contributions) to the coefficient functions for non-singlet deep inelastic structure functions due to gluon vacuum polarization insertions in one-loop graphs. Remarkably, for all the structure functions $F_1$, $F_2$, $F_3$ and $g_1$, there are only two such contributions, corresponding to $1/Q^2$ and $1/Q^4$ power corrections. We compute their dependence on Bjorken $x$. The results could be used to model the dominant higher-twist contributions.
Deep inelastic events containing two forward jets at HERA
J. Kwiecinski; C. A. M. Lewis; A. D. Martin
1997-07-17
We use the BFKL equation to calculate the rate of deep inelastic scattering events containing two forward jets (adjacent to the proton remnants) at HERA. We compare the production of two forward jets with that of only one forward jet (the "Mueller" process). We obtain a stable prediction for this two to one jet ratio, which may serve as a measure of the BFKL vertex function.
Phase transitions in the distribution of inelastically colliding inertial particles
Sergey Belan; Alexander Chernykh; Gregory Falkovich
2015-05-14
It was recently suggested that the sign of particle drift in inhomogeneous temperature or turbulence depends on the particle inertia: weakly inertial particles localize near minima of temperature or turbulence intensity (effects known as thermophoresis and turbophoresis), while strongly inertial particles fly away from minima in an unbounded space. The problem of a particle near minima of turbulence intensity is related to that of two particles in a random flow, so that the localization-delocalization transition in the former corresponds to the path-coalescence transition in the latter. The transition is signaled by the sign change of the Lyapunov exponent that characterizes the mean rate of particle approach to the minimum (which could be wall or another particle). Here we solve analytically this problem for inelastic collisions and derive the phase diagram for the transition in the inertia-inelasticity plane. An important feature of the phase diagram is the region of inelastic collapse: if the restitution coefficient of particle velocity is smaller than some critical value, then the particle is localized for any inertia. We present direct numerical simulations which support the theory and in addition reveal the dependence of the transition of the flow correlation time, characterized by the Stokes number.
Inelastic pion scattering by /sup 13/C at low energies
Mitchell, J.H.
1987-03-01
Angular distributions for inelastically scattered pions were obtained for several states in /sup 13/C at an incident energy of 65 MeV. The data include results from both ..pi../sup +/ and ..pi../sup -/ measurements. In addition, ..pi../sup -/ measurements were made at T/sub ..pi../ = 50 MeV at one angle to give a two point fixed-q excitation function. The data are compared to theory and the data of others. As might be expected, medium corrections are shown to be considerably more important at low energies than at resonance. This is true for inelastic transitions of multipolarity 0,2 and 3. Parameters derived from an analysis of elastic pion scattering and SCX data also provide an adequate description of the inelastic transitions. The charge asymmetry in the cross sections for the 9/2/sup +/ state that was seen at resonance persists at these energies. This result is consistent with an impulse approximation treatment of the spin-flip amplitude. This is true even though the incoming energy of the pions is far below the range where the validity of an impulse treatment is expected. 65 refs., 45 figs.
O.A.R. 734-055 - Pole Lines, Buried Cables, Pipe lines, Signs...
and Operations (1981). Retrieved from "http:en.openei.orgwindex.php?titleO.A.R.734-055-PoleLines,BuriedCables,Pipelines,Signs,Misc.FacilitiesandOperations...
Tewari, Krishna C. (Whitehall, PA); Foster, Edward P. (Macungie, PA)
1985-01-01
Coal solids (SRC) and distillate oils are combined to afford single-phase blends of residual oils which have utility as fuel oils substitutes. The components are combined on the basis of their respective polarities, that is, on the basis of their heteroatom content, to assure complete solubilization of SRC. The resulting composition is a fuel oil blend which retains its stability and homogeneity over the long term.
Tewari, K.C.; Foster, E.P.
1985-10-15
Coal solids (SRC) and distillate oils are combined to afford single-phase blends of residual oils which have utility as fuel oils substitutes. The components are combined on the basis of their respective polarities, that is, on the basis of their heteroatom content, to assure complete solubilization of SRC. The resulting composition is a fuel oil blend which retains its stability and homogeneity over the long term.
Ricardo Brito; Rodrigo Soto
2010-12-21
It has been recently reported that a granular mixture in which grains differ in their restitution coefficients presents segregation: the more inelastic particles sink to the bottom. When other segregation mechanisms as buoyancy and the Brazil nut effect are present, the inelasticity induced segregation can compete with them. First, a detailed analysis, based on numerical simulations of two dimensional systems, of the competition between buoyancy and the inelasticity induced segregation is presented, finding that there is a transition line in the parameter space that determines which mechanism is dominant. In the case of neutrally buoyant particles having different sizes the inelasticity induced segregation can compete with the Brazil nut effect (BNE). Reverse Brazil nut effect (RBNE) could be obtained at large inelasticities of the intruder. At intermediate values, BNE and RBNE coexist and large inelastic particles are found both near the bottom and at the top of the system.
Luger, Annemarie
2006-01-01
of generalized poles of generalized Nevanlinna functions Annemarie Luger1 1 Institut fÂ¨ur Analysis und Scientific, generalized poles, pole cancellation functions MSC (2000) 30D50, 30E99, 47B50 Generalized poles. In this paper those generalized poles that are not of positive type and their degrees of non
Power Corrections to Event Shapes in Deep Inelastic Scattering
M. Dasgupta; B. R. Webber
1997-04-11
We investigate the power-suppressed corrections to the mean values of various quantities that characterise the shapes of final states in deep inelastic lepton scattering. Our method is based on an analysis of one-loop Feynman graphs containing a massive gluon, which is equivalent to the evaluation of leading infrared renormalon contributions. As in $\\ee$ annihilation, we find that the leading corrections are proportional to $1/Q$. We give quantitative estimates based on the hypothesis of a universal low-energy effective coupling.
Graphene nanoribbon molecular sensor based on inelastic transport
Ritter, C. [School of Physics, Trinity College Dublin, Dublin 2 (Ireland); Muniz, R. B.; Latgé, A. [Instituto de Física, Universidade Federal Fluminense SN, 24210-360 Niterói-RJ (Brazil)
2014-04-07
Results of phonon-assisted inelastic quantum transport calculations are presented for graphene nanoribbons. We consider a single molecule attached to a carbon atom and describe the electronic structure by a tight-binding model, taking into account a local phonon mode associated with the attached molecule characteristic vibration. The calculated transmission spectra reveal a striking sensitivity for molecules attached to the edges of asymmetric zigzag graphene nanoribbons. Our results show that the differential conductance may be used to identify the presence as well as the characteristic vibration frequency of a target molecule at finite temperatures.
Resonant Inelastic Scattering Spectra of Free Molecules with Vibrational Resolution
Hennies, Franz; Pietzsch, Annette; Berglund, Martin; Foehlisch, Alexander; Schmitt, Thorsten; Strocov, Vladimir; Karlsson, Hans O.; Andersson, Joakim; Rubensson, Jan-Erik
2010-05-14
Inelastic x-ray scattering spectra excited at the 1s{sup -1{pi}}* resonance of gas phase O{sub 2} have been recorded with an overall energy resolution that allows for well-resolved vibrational progressions. The nuclear wave packet dynamics in the intermediate state is reflected in vibrational excitations of the electronic ground state, and by fine-tuning the excitation energy the dissociation dynamics in the predissociative B{sup '} {sup 3{Pi}}{sub g} final state is controlled.
Nuclear medium effects in $?(\\bar?)$-nucleus deep inelastic scattering
H. Haider; I. Ruiz Simo; M. Sajjad Athar; M. J. Vicente Vacas
2011-08-16
We study the nuclear medium effects in the weak structure functions $F_2(x,Q^2)$ and $F_3(x,Q^2)$ in the deep inelastic neutrino/antineutrino reactions in nuclei. We use a theoretical model for the nuclear spectral functions which incorporates the conventional nuclear effects, such as Fermi motion, binding and nucleon correlations. We also consider the pion and rho meson cloud contributions calculated from a microscopic model for meson-nucleus self-energies. The calculations have been performed using relativistic nuclear spectral functions which include nucleon correlations. Our results are compared with the experimental data of NuTeV and CDHSW.
A deep high-resolution optical log of dust, ash, and stratigraphy in South Pole glacial ice
Woschnagg, Kurt
A deep high-resolution optical log of dust, ash, and stratigraphy in South Pole glacial ice N. E (2005), A deep high-resolution optical log of dust, ash, and stratigraphy in South Pole glacial ice
Thermal Effects on NeutrinoNucleus Inelastic Scattering in Stellar Environments
Ponomarev, Vladimir
NUCLEI Theory Thermal Effects on NeutrinoNucleus Inelastic Scattering in Stellar Environments A. A, 2010 Abstract--Thermal effects for inelastic neutrinonucleus scattering off eveneven nuclei temperatures during the supernova core collapse. The thermal population of the excited states significantly
A New Polyethylene Scattering Law Determined Using Inelastic Neutron Scattering
Lavelle, Christopher M [ORNL; Liu, C [Oak Ridge National Laboratory (ORNL); Stone, Matthew B [ORNL
2013-01-01
Monte Carlo neutron transport codes such as MCNP rely on accurate data for nuclear physics cross-sections to produce accurate results. At low energy, this takes the form of scattering laws based on the dynamic structure factor, S (Q, E). High density polyethylene (HDPE) is frequently employed as a neutron moderator at both high and low temperatures, however the only cross-sections available are for T =300 K, and the evaluation has not been updated in quite some time. In this paper we describe inelastic neutron scattering measurements on HDPE at 5 and 300 K which are used to improve the scattering law for HDPE. We describe the experimental methods, review some of the past HDPE scattering laws, and compare computations using these models to the measured S (Q, E). The total cross-section is compared to available data, and the treatment of the carbon secondary scatterer as a free gas is assessed. We also discuss the use of the measurement itself as a scattering law via the 1 phonon approximation. We show that a scattering law computed using a more detailed model for the Generalized Density of States (GDOS) compares more favorably to this experiment, suggesting that inelastic neutron scattering can play an important role in both the development and validation of new scattering laws for Monte Carlo work.
Capture of Inelastic Dark Matter in the Sun
Shmuel Nussinov; Lian-Tao Wang; Itay Yavin
2009-09-02
We consider the capture of dark matter in the Sun by inelastic scattering against nuclei as in the inelastic dark matter scenario. We show that, assuming a WIMP-nucleon cross-section of \\sigma_n = 10^{-40}\\cm^2 the resulting capture rate and density are sufficiently high so that current bounds on the muon neutrino flux from the Sun rule out any appreciable annihilation branching ratio of WIMPs into W^+W^-, Z^0Z^0, \\tau^+\\tau^-, t\\bar{t} and neutrinos. Slightly weaker bounds are also available for annihilations into b\\bar{b} and c\\bar{c}. Annihilations into lighter particles that may produce neutrinos, such as \\mu^+\\mu^-, pions and kaons are unconstrained since those stop in the Sun before decaying. Interestingly enough, this is consistent with some recent proposals motivated by the PAMELA results for the annihilation of WIMPs into light bosons which subsequently decay predominantly into light leptons and pions.
Materials recovery from shredder residues
Daniels, E. J.; Jody, B. J.; Pomykala, J., Jr.
2000-07-24
Each year, about five (5) million ton of shredder residues are landfilled in the US. Similar quantities are landfilled in Europe and the Pacific Rim. Landfilling of these residues results in a cost to the existing recycling industry and also represents a loss of material resources that are otherwise recyclable. In this paper, the authors outline the resources recoverable from typical shredder residues and describe technology that they have developed to recover these resources.
Ashman, John Gavin; Baum, G; Beaufays, J; Bee, C P; Benchouk, C; Bird, I G; Brown, S C; Caputo, M C; Cheung, H W K; Chima, J S; Cibarowski, J; Clifft, R W; Coignet, G; Combley, F; Court, G R; D'Agostini, Giulio; Drees, J; Düren, M; Dyce, N; Edwards, A W; Edwards, M; Ernst, T; Ferrero, M I; Francis, D; Gabathuler, Erwin; Gamet, R; Gibson, V; Gillies, James D; Grafström, P; Hamacher, K; Von Harrach, D; Hayman, P J; Holt, J R; Hughes, V W; Jacholkowska, A; Jones, T; Kabuss, E M; Korzen, B; Krüner, U; Kullander, Sven; Landgraf, U; Lanske, D; Lattenstrom, F; Lindqvist, T; Loken, J G; Matthews, N; Mizuno, Y; Mönig, K; Montanet, François; Nagy, E; Nassalski, J P; Niinikoski, T O; Norton, P R; Oakham, F G; Oppenheim, R F; Osborne, A M; Papavassiliou, V; Pavel, N; Peroni, C; Peschel, H; Piegaia, R; Pietrzyk, B; Pietrzyk, U; Povh, B; Renton, P B; Rieubland, Jean Michel; Rijllart, A; Rith, K; Rondio, Ewa; Ropelewski, Leszek; Salmon, D P; Sandacz, A; Schröder, T B; Schüler, K P; Schultze, K; Shibata, T A; Sloan, Terence; Staiano, A; Stier, H E; Stock, J T; Taylor, G N; Thompson, J C; Walcher, T; Tóth, J; Urbàn, L; Wallucks, W; Wheeler, S; Williams, D A; Williams, W S C; Wimpenny, S J; Windmolders, R; Womersley, W J; Ziemons, K
1989-01-01
An investigation of the spin structure of the proton in deep inelastic scattering of polarised muons on polarised protons
Residuals, Sludge, and Composting (Maine)
Broader source: Energy.gov [DOE]
The Maine Department of Environmental Protection's Residuals, Sludge, and Composting program regulates the land application and post-processing of organic wastes, including sewage sludge, septage,...
Electron-beam-induced domain poling in LiNbO3 for two-dimensional nonlinear frequency conversion
Arie, Ady
Electron-beam-induced domain poling in LiNbO3 for two-dimensional nonlinear frequency conversion to achieve noncollinear second-harmonic generation. The sample was fabricated using an electron-beam indirect electron-beam poling,1 electric-field poling,2 and high-voltage atomic force microscop AFM .3
Dobkins, Karen R.
Integration of one- and two-dimensional motion signals in infants: Evidence from the barber-pole into a coherent global motion percept by studying the ``barber-pole illusion''; when a one-dimensional moving study, we used barber-pole stimuli to investigate the develop- ment of motion mechanisms that integrate
Least Squares Pole Assignment by Memory-less Output Feedback* Dan-chi Jiang & J. B. Moore
Moore, John Barratt
Least Squares Pole Assignment by Memory-less Output Feedback* Dan-chi Jiang & J. B. Moore In this paper, a pole assignmentproblem of lineartime invariantcontrol system by memory- less output feedback is posed as a least squares poles assignmentproblem and analysed. The coat functions are appropriately
The Spindle Pole Body Assembly Component Mps3p/Nep98p Functions in Sister Chromatid Cohesion*
Fields, Stan
The Spindle Pole Body Assembly Component Mps3p/Nep98p Functions in Sister Chromatid Cohesion- sis, several processes must occur early in the cell cycle, including spindle pole duplication, DNA replication, and the establishment of cohesion between nascent sis- ter chromatids. Spindle pole body
Lynch, Jerome P.
by Transfer Function Pole Migration J. P. Lynch University of Michigan, Department of Civil and Environmental function characteristic equation roots (poles) upon the complex plane. Using structural response time-history data collected from an instrumented structure, transfer function poles can be estimated using
Tuscia, Università Degli Studi Della
Revealed by Inelastic Neutron Scattering A. Orecchini, A. Paciaroni, A. R. Bizzarri, and S. Cannistraro -lactoglobulin has been investigated by inelastic neutron scattering, on both dry and D2O-hydrated samples. Both typically accessible energy and momentum transfers, inelastic thermal neutron scattering is probably
Hadzimehmedovic, M.; Osmanovic, H.; Stahov, J.; Ceci, S.; Svarc, A.
2011-09-15
Each and every energy-dependent partial-wave analysis is parametrizing the pole positions in a procedure defined by the way the continuous energy dependence is implemented. These pole positions are, henceforth, inherently model dependent. To reduce this model dependence, we use only one, coupled-channel, unitary, fully analytic method based on the isobar approximation to extract the pole positions from each available member of the worldwide collection of partial-wave amplitudes, which are understood as nothing more but a good energy-dependent representation of genuine experimental numbers assembled in a form of partial-wave data. In that way, the model dependence related to the different assumptions on the analytic form of the partial-wave amplitudes is avoided, and the true confidence limit for the existence of a particular resonant state, at least in one model, is established. The way the method works and first results are demonstrated for the S{sub 11} partial wave.
AUTOMATIC RECOGNITION OF ENVIRONMENTAL SOUND EVENTS USING ALL-POLE GROUP DELAY FEATURES
Virtanen, Tuomas
Diment, Emre Cakir, Toni Heittola, Tuomas Virtanen Department of Signal Processing, Tampere University of Technology, Tampere, Finland ABSTRACT A feature based on the group delay function from all-pole mod- els
Stabilizing a Vehicle near Rollover: An Analogy to Cart-Pole
Peters, Steven Conrad
An analogy between the dynamics of a cart-pole system and vehicle rollover dynamics is used to derive a controller for tipping up and stabilizing a planar model of a passenger vehicle near rollover by controlling lateral ...
Deep Inelastic Scattering from Holographic Spin-One Hadrons
Ezequiel Koile; Sebastian Macaluso; Martin Schvellinger
2011-12-30
We study deep inelastic scattering structure functions from hadrons using different holographic dual models which describe the strongly coupled regime of gauge theories in the large $N$ limit. Particularly, we consider scalar and vector mesons obtained from holographic descriptions with fundamental degrees of freedom, corresponding to ${\\cal {N}}=2$ supersymmetric and non-supersymmetric Yang-Mills theories. We explicitly obtain analytic expressions for the full set of eight structure functions, i.e., $F_1$, $F_2$, $g_1$, $g_2$, $b_1$, $b_2$, $b_3$, $b_4$, arising from the standard decomposition of the hadronic tensor of spin-one hadrons. We obtain the relations $2 F_1 = F_2$ and $2 b_1 = b_2$. In addition, we find $b_1 \\sim {\\cal {O}}(F_1)$ as suggested by Hoodbhoy, Jaffe and Manohar for vector mesons. Also, we find new relations among some of these structure functions.
Third and fourth degree collisional moments for inelastic Maxwell models
V. Garzo; A. Santos
2007-11-29
The third and fourth degree collisional moments for $d$-dimensional inelastic Maxwell models are exactly evaluated in terms of the velocity moments, with explicit expressions for the associated eigenvalues and cross coefficients as functions of the coefficient of normal restitution. The results are applied to the analysis of the time evolution of the moments (scaled with the thermal speed) in the free cooling problem. It is observed that the characteristic relaxation time toward the homogeneous cooling state decreases as the anisotropy of the corresponding moment increases. In particular, in contrast to what happens in the one-dimensional case, all the anisotropic moments of degree equal to or less than four vanish in the homogeneous cooling state for $d\\geq 2$.
Hydrodynamics of an inelastic gas with implications for sonochemistry
James F. Lutsko
2005-10-09
The hydrodynamics for a gas of hard-spheres which sometimes experience inelastic collisions resulting in the loss of a fixed, velocity-independent, amount of energy $\\Delta $ is investigated with the goal of understanding the coupling between hydrodynamics and endothermic chemistry. The homogeneous cooling state of a uniform system and the modified Navier-Stokes equations are discussed and explicit expressions given for the pressure, cooling rates and all transport coefficients for D-dimensions. The Navier-Stokes equations are solved numerically for the case of a two-dimensional gas subject to a circular piston so as to illustrate the effects of the enegy loss on the structure of shocks found in cavitating bubbles. It is found that the maximal temperature achieved is a sensitive function of $\\Delta $ with a minimum occuring near the physically important value of $\\Delta \\sim 12,000K \\sim 1eV$
Saturation in diffractive deep inelastic eA scattering
M. S. Kugeratski; V. P. Goncalves; F. S. Navarra
2006-02-24
In this paper we investigate the saturation physics in diffractive deep inelastic electron-ion scattering. We estimate the energy and nuclear dependence of the ratio $\\sigma^{diff}/\\sigma^{tot}$ and predict the $x_{\\pom}$ and $\\beta$ behavior of the nuclear diffractive structure function $F_{2,A}^{D(3)}(Q^2, \\beta, x_{IP})$. Moreover, we analyze the ratio $R^{diff}_{A1,A2}(Q^2, \\beta, x_{IP}) = F_{2,A1} ^{D(3)}/F_{2,A2} ^{D(3)}$, which probes the nuclear dependence of the structure of the Pomeron. We show that saturation physics predicts that approximately 37 % of the events observed at eRHIC should be diffractive.
Nuclear spin response studies in inelastic polarized proton scattering
Jones, K.W.
1988-01-01
Spin-flip probabilities S/sub nn/ have been measured for inelastic proton scattering at incident proton energies around 300 MeV from a number of nuclei. At low excitation energies S/sub nn/ is below the free value. For excitation energies above about 30 MeV for momentum transfers between about 0.35 fm/sup /minus/1/ and 0.65 fm/sup / minus/1/ S/sub nn/ exceeds free values significantly. These results suggest that the relative ..delta..S = 1(..delta..S = 0 + ..delta..S = 1) nuclear spin response approaches about 90% in the region of the enhancement. Comparison of the data with slab response calculations are presented. Decomposition of the measured cross sections into sigma(..delta..S = 0) and sigma(..delta..S = 1) permit extraction of nonspin-flip and spin-flip dipole and quadrupole strengths. 29 refs., 11 figs.
Inelastic magnetic neutron scattering in CePd{sub 3}.
Lawrence, J. M.; Fanelli, V. R.; Goremychkin, E. A.; Osborn, R.; Bauer, E. D.; McClellan, K. J.; Christianson, A. D.; Univ. of California at Irvine; LANL; ORNL
2008-01-01
We have performed time-of-flight neutron scattering measurements on a single crystal of the intermediate valence compound CePd{sub 3}. At 10 K, a Kondo-esque inelastic magnetic scattering peak occurs near {Delta}E = 60 meV with maximum intensity for momentum transfer Q near the (1/2, 1/2, 0) zone boundary. Spectral weight is transferred to lower energy as Q varies until at zone center the intensity at 60 meV is considerably weaker. These results are in qualitative accord with predictions of the Anderson lattice. The Q-dependence may resolve an older controversy concerning the low-temperature scattering. We discuss the relationship of these results to our recent results in YbAl{sub 3}.
Besson, D Z; Ratzlaff, K; Young, R
2014-01-01
We describe the design, construction and operation of the Askaryan Radio Array (ARA) Autonomous Renewable Power Stations, initially installed at the South Pole in December, 2010 with the goal of providing an independently operating 100 W power source capable of year-round operation in extreme environments. In addition to particle astrophysics applications at the South Pole, such a station can easily be, and has since been, extended to operation elsewhere, as described herein.
Krishnan, Mahadevan [Alameda Applied Sciences Corporation (AASC), San Leandro, CA 94577, USA; Valderrama, E. [Alameda Applied Sciences Corporation (AASC), San Leandro, CA 94577, USA; Bures, B. [Alameda Applied Sciences Corporation (AASC), San Leandro, CA 94577, USA; Wilson-Elliott, K. [Alameda Applied Sciences Corporation (AASC), San Leandro, CA 94577, USA; Zhao, Xin [JLAB; Phillips, H. Larry [JLAB; Valente, Anne-Marie [JLAB; Spradlin, Joshua K. [JLAB; Reece, Charles E. [JLAB; Seo, Kang [Norfolk State U.
2011-11-01
We report residual resistivity ratio (RRR) values (up to RRR-541) measured in thin film Nb grown on MgO crystal substrates, using a vacuum arc discharge, whose 60?160 eV Nb ions drive heteroepitaxial crystal growth. The RRR depends strongly upon substrate annealing and deposition temperatures. X-ray diffraction spectra and pole figures reveal that, as the crystal structure of the Nb film becomes more ordered, RRR increases, consistent with fewer defects or impurities in the lattice and hence longer electron mean free path. A transition from Nb(110) to purely Nb(100) crystal orientation on the MgO(100) lattice occurs at higher temperature.
Garba, M.T.; Gonzales-Velez, H.; Roach, D.L.
2010-11-26
This paper examines the initial parallel implementation of SCATTER, a computationally intensive inelastic neutron scattering routine with polycrystalline averaging capability, for the General Utility Lattice Program (GULP). Of particular importance...
Measurement of parity-violating asymmetry in electron-deuteron inelastic scattering
Wang, D.
The parity-violating asymmetries between a longitudinally polarized electron beam and an unpolarized deuterium target have been measured recently. The measurement covered two kinematic points in the deep-inelastic scattering ...
Seidler, Gerald T.
Background proportional enhancement of the extended fine structure in nonresonant inelastic x is proportional to the strong q-dependent evolution in shape and magnitude of the atomic background. This en
A minimal model for the inelastic mechanics of biopolymer networks and cells
Lars Wolff; Klaus Kroy
2012-05-27
Live cells have ambiguous mechanical properties. They were often described as either elastic solids or viscoelastic fluids and have recently been classified as soft glassy materials characterized by weak power-law rheology. Nonlinear rheological measurements have moreover revealed a pronounced inelastic response indicative of a competition between stiffening and softening. It is an intriguing question whether these observations can be explained from the material properties of much simpler in-vitro reconstituted networks of biopolymers that serve as reduced model systems for the cytoskeleton. Here, we explore the mechanism behind the inelastic response of cells and biopolymer networks, theoretically. Our analysis is based on the model of the inelastic glassy wormlike chain that accounts for the nonlinear polymer dynamics and transient crosslinking in biopolymer networks. It explains how inelastic and kinematic-hardening type behavior naturally emerges from the antagonistic mechanisms of viscoelastic stress-stiffening due to the polymers and inelastic fluidization due to bond breaking. It also suggests a simple set of schematic constitutive equations which faithfully reproduce the rich inelastic phenomenology of biopolymer networks and cells.
Hsu, John S [Oak Ridge, TN
2005-12-06
A method and apparatus in which a rotor (11) and a stator (17) define a radial air gap (20) for receiving AC flux and at least one, and preferably two, DC excitation assemblies (23, 24) are positioned at opposite ends of the rotor (20) to define secondary air gaps (21, 22). Portions of PM material (14a, 14b) are provided as boundaries separating the rotor pole portions (12a, 12b) of opposite polarity from other portions of the rotor (11) and from each other to define PM poles (12a, 12b) for conveying the DC flux to or from the primary air gap (20) and for inhibiting flux from leaking from the pole portions prior to reaching the primary air gap (20). The portions of PM material (14a, 14b) are spaced from each other so as to include reluctance poles (15) of ferromagnetic material between the PM poles (12a, 12b) to interact with the AC flux in the primary-air gap (20).
Instrument for analysis of electric motors based on slip-poles component
Haynes, H.D.; Ayers, C.W.; Casada, D.A.
1996-11-26
A new instrument is described for monitoring the condition and speed of an operating electric motor from a remote location. The slip-poles component is derived from a motor current signal. The magnitude of the slip-poles component provides the basis for a motor condition monitor, while the frequency of the slip-poles component provides the basis for a motor speed monitor. The result is a simple-to-understand motor health monitor in an easy-to-use package. Straightforward indications of motor speed, motor running current, motor condition (e.g., rotor bar condition) and synthesized motor sound (audible indication of motor condition) are provided. With the device, a relatively untrained worker can diagnose electric motors in the field without requiring the presence of a trained engineer or technician. 4 figs.
Instrument for analysis of electric motors based on slip-poles component
Haynes, Howard D. (Knoxville, TN); Ayers, Curtis W. (Clinton, TN); Casada, Donald A. (Knoxville, TN)
1996-01-01
A new instrument for monitoring the condition and speed of an operating electric motor from a remote location. The slip-poles component is derived from a motor current signal. The magnitude of the slip-poles component provides the basis for a motor condition monitor, while the frequency of the slip-poles component provides the basis for a motor speed monitor. The result is a simple-to-understand motor health monitor in an easy-to-use package. Straightforward indications of motor speed, motor running current, motor condition (e.g., rotor bar condition) and synthesized motor sound (audible indication of motor condition) are provided. With the device, a relatively untrained worker can diagnose electric motors in the field without requiring the presence of a trained engineer or technician.
The orbital poles of Milky Way satellite galaxies: a rotationally supported disc-of-satellites
Manuel Metz; Pavel Kroupa; Noam I. Libeskind
2008-02-26
Available proper motion measurements of Milky Way (MW) satellite galaxies are used to calculate their orbital poles and projected uncertainties. These are compared to a set of recent cold dark-matter (CDM) simulations, tailored specifically to solve the MW satellite problem. We show that the CDM satellite orbital poles are fully consistent with being drawn from a random distribution, while the MW satellite orbital poles indicate that the disc-of-satellites of the Milky Way is rotationally supported. Furthermore, the bootstrapping analysis of the spatial distribution of theoretical CDM satellites also shows that they are consistent with being randomly drawn. The theoretical CDM satellite population thus shows a significantly different orbital and spatial distribution than the MW satellites, most probably indicating that the majority of the latter are of tidal origin rather than being DM dominated sub-structures. A statistic is presented that can be used to test a possible correlation of satellite galaxy orbits with their spatial distribution.
The examination of residual plots
Tsai, Chih-Ling; Cai, Zongwu; Wu, Xizhi
1998-01-01
, then equations (14) and (18) indicate that the plot of eˆ(i) (or eˆi) versus yˆi might not reveal a nonlinear pattern even though the true mean function includes the nonlinear component, g(Z). Cook’s Example 7.1 (1994) illustrates this point. In practice...), Examples 7.1 and 7.2) has shown that this type of plot may provide misleading information when fitted values are used, we therefore suggest using the linear residual plot (residuals versus explanatory variables case) for the detection of nonlinearity...
Modeling a Complex Pole-Zero System in Terms of its Low-Frequency/High-Frequency Cutoffs
King, Roger
Modeling a Complex Pole-Zero System in Terms of its Low-Frequency/High-Frequency Cutoffs Introduction Even a simple amplifier circuit will tend to have multiple poles and zeros in its high-frequency will alter a signal can be gotten from its high-frequency and low-frequency cutoffs. High-Frequency Response
POLE EXPANSION FOR SOLVING A TYPE OF PARAMETRIZED LINEAR SYSTEMS IN ELECTRONIC STRUCTURE
Ying, Lexing
POLE EXPANSION FOR SOLVING A TYPE OF PARAMETRIZED LINEAR SYSTEMS IN ELECTRONIC STRUCTURE, parametrized linear systems, electronic structure calculation AMS subject classifications. 65F30,65D30,65Z05 1 linear systems. Under certain assumptions on the parametrization, solutions to the linear systems for all
Active vibration control of a fluid/plate system using a pole placement controller
Paris-Sud XI, Université de
Active vibration control of a fluid/plate system using a pole placement controller Bogdan Robu reduction of the structural vibrations induced by the sloshing of large masses of fuel inside a partly full, published in "International Journal of Control 85, 6 (2012) 684-694" #12;Keywords Flexible system, fluid
Boyer, Edmond
Generation of polarization-entangled photons using type-II doubly periodically poled lithium the issue of the generation of non-degenerate cross-polarization-entangled photon pairs using type-conversion processes, namely ordinary pump photon down- conversion to either extraordinary signal and ordinary idler
Thursday, March 15, 2007 POSTER SESSION II: MOON: SOILS, POLES, AND VOLATILES
Rathbun, Julie A.
Thursday, March 15, 2007 POSTER SESSION II: MOON: SOILS, POLES, AND VOLATILES 6:30 p.m. Fitness Center Schultz R. A. Siddharthan R. Strength of Lunar Soil Using the Cam Cap Approach [#1127] We use a standard Cam Cap approach to model the strength of returned Apollo 12 lunar soil. Cohesion, friction
The Efficiency of Mollies, Poecilia mexicana, as Live Bait for Pole-and-Line
a modem well equipped west coast live- bait vessel, J-Ann (Vergne et aI., 1978). In Hawaii, other concerning cultured baitfish spe- cies called for further field tests and for evaluation of species suitability for pole-and-line tuna fishing. This study tested the desirability of the cultured mollie
Interaction between Poly(ADP-ribose) and NuMA Contributes to Mitotic Spindle Pole Assembly
Coughlin, M.
Poly(ADP-ribose) (pADPr), made by PARP-5a/tankyrase-1, localizes to the poles of mitotic spindles and is required for bipolar spindle assembly, but its molecular function in the spindle is poorly understood. To investigate ...
Pyo, Jeonghyun; Jeong, Woong-Seob [Korea Astronomy and Space Science Institute (KASI), Daejeon 305-348 (Korea, Republic of); Matsumoto, Toshio [Department of Physics and Astronomy, Seoul National University, Seoul 151-742 (Korea, Republic of); Matsuura, Shuji, E-mail: jhpyo@kasi.re.kr [Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Kanagawa 252-5210 (Japan)
2012-12-01
We present the smoothness of the mid-infrared sky from observations by the Japanese infrared astronomical satellite AKARI. AKARI monitored the north ecliptic pole (NEP) during its cold phase with nine wave bands covering from 2.4 to 24 {mu}m, out of which six mid-infrared bands were used in this study. We applied power-spectrum analysis to the images in order to search for the fluctuation of the sky brightness. Observed fluctuation is explained by fluctuation of photon noise, shot noise of faint sources, and Galactic cirrus. The fluctuations at a few arcminutes scales at short mid-infrared wavelengths (7, 9, and 11 {mu}m) are largely caused by the diffuse Galactic light of the interstellar dust cirrus. At long mid-infrared wavelengths (15, 18, and 24 {mu}m), photon noise is the dominant source of fluctuation over the scale from arcseconds to a few arcminutes. The residual fluctuation amplitude at 200'' after removing these contributions is at most 1.04 {+-} 0.23 nW m{sup -2} sr{sup -1} or 0.05% of the brightness at 24 {mu}m and at least 0.47 {+-} 0.14 nW m{sup -2} sr{sup -1} or 0.02% at 18 {mu}m. We conclude that the upper limit of the fluctuation in the zodiacal light toward the NEP is 0.03% of the sky brightness, taking 2{sigma} error into account.
Inelastic scattering of electrons by metastable hydrogen atoms in a laser field
Buica, Gabriela
2015-01-01
The inelastic scattering of fast electrons by metastable hydrogen atoms in the presence of a linearly polarized laser field is theoretically studied in the domain of moderate field intensities. The interaction of the hydrogen atom with the laser field is described by first-order time-dependent perturbation theory, while the projectile electrons interacting with the laser field are described by the Gordon-Volkov wave functions. An analytic expression is obtained for the differential scattering cross section in the first-order Born approximation for laser-assisted inelastic e-H(2s) scattering for the 2s-nl excitation. Detailed analytical and numerical results are presented for inelastic scattering accompanied by one-photon absorption, and the angular dependence and resonance structure of the differential cross sections is discussed for the 2s -4l excitation of metastable hydrogen.
Evaluation of residue drum storage safety risks
Conner, W.V.
1994-06-17
A study was conducted to determine if any potential safety problems exist in the residue drum backlog at the Rocky Flats Plant. Plutonium residues stored in 55-gallon drums were packaged for short-term storage until the residues could be processed for plutonium recovery. These residues have now been determined by the Department of Energy to be waste materials, and the residues will remain in storage until plans for disposal of the material can be developed. The packaging configurations which were safe for short-term storage may not be safe for long-term storage. Interviews with Rocky Flats personnel involved with packaging the residues reveal that more than one packaging configuration was used for some of the residues. A tabulation of packaging configurations was developed based on the information obtained from the interviews. A number of potential safety problems were identified during this study, including hydrogen generation from some residues and residue packaging materials, contamination containment loss, metal residue packaging container corrosion, and pyrophoric plutonium compound formation. Risk factors were developed for evaluating the risk potential of the various residue categories, and the residues in storage at Rocky Flats were ranked by risk potential. Preliminary drum head space gas sampling studies have demonstrated the potential for formation of flammable hydrogen-oxygen mixtures in some residue drums.
Incentives for use of inelastic analysis in RAM transport container design
Ammerman, D.J.; Heinstein, M.W.
1992-12-31
The use of inelastic analysis methods instead of the traditional elastic analysis methods in the design of radioactive material (RAM) transport packagings leads to a better understanding of the response ofthe package to mechanical loadings. Thus, better assessment of the containment, thermal protection, and shielding integrity of the package after a structural accident event can be made. A more accurate prediction of the package response can lead to enhanced safety and also allow for a more efficient use of materials, possibly leading to a package with higher capacity and/or lower weight. This paper discusses the incentives for using inelastic analysis in the design of RAM shipping packages. Inelastic analysis provides an improved knowledge of the package behavior. It must be demonstrated that the use of inelastic analysis provides a better design to overcome the difficulties associated with this type of analysis. In this paper, comparisons between elastic and inelastic analyses are made to illustrate the differences in the two analysis techniques for two different types of packages. One is a package to transport a large quantity of RAM by rail with lead gamma shielding,and the other is a package to transport RAM by truck with depleteduranium gamma shielding. Analyses of the center-of-gravity-over-corner impacts will be compared for each package. The comparisons indicate thata package designed to just meet the elastic design criteria will actually undergo some yielding in the locations of highest stress. This results in two consequences in the predicted behavior of the cask. First,the overprediction of the stiffness of these yielded regions by theelastic analysis technique results in an underestimation of the stresses in other portions of the structure. Secondly, in an inelastic analysis, the yielding of a portion of a structure causes the force in thatregion to rise less rapidly than forces in adjacent regions.
Incentives for use of inelastic analysis in RAM transport container design
Ammerman, D.J.; Heinstein, M.W.
1992-01-01
The use of inelastic analysis methods instead of the traditional elastic analysis methods in the design of radioactive material (RAM) transport packagings leads to a better understanding of the response ofthe package to mechanical loadings. Thus, better assessment of the containment, thermal protection, and shielding integrity of the package after a structural accident event can be made. A more accurate prediction of the package response can lead to enhanced safety and also allow for a more efficient use of materials, possibly leading to a package with higher capacity and/or lower weight. This paper discusses the incentives for using inelastic analysis in the design of RAM shipping packages. Inelastic analysis provides an improved knowledge of the package behavior. It must be demonstrated that the use of inelastic analysis provides a better design to overcome the difficulties associated with this type of analysis. In this paper, comparisons between elastic and inelastic analyses are made to illustrate the differences in the two analysis techniques for two different types of packages. One is a package to transport a large quantity of RAM by rail with lead gamma shielding,and the other is a package to transport RAM by truck with depleteduranium gamma shielding. Analyses of the center-of-gravity-over-corner impacts will be compared for each package. The comparisons indicate thata package designed to just meet the elastic design criteria will actually undergo some yielding in the locations of highest stress. This results in two consequences in the predicted behavior of the cask. First,the overprediction of the stiffness of these yielded regions by theelastic analysis technique results in an underestimation of the stresses in other portions of the structure. Secondly, in an inelastic analysis, the yielding of a portion of a structure causes the force in thatregion to rise less rapidly than forces in adjacent regions.
Transforms for prediction residuals in video coding
Kam??l?, Fatih
2010-01-01
Typically the same transform, the 2-D Discrete Cosine Transform (DCT), is used to compress both image intensities in image coding and prediction residuals in video coding. Major prediction residuals include the motion ...
Turro, Nicholas J.
2012-01-01
PHYSICAL REVIEW B 85, 205440 (2012) Inelastic neutron scattering investigations of the quantum transfer arising from the neutron scattering event has also been investigated. The -dependence spectra investigations using infrared (IR),3,1315 inelastic neutron scattering (INS),3,16,17 and nuclear magnetic
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Zarkadoula, Eva; Xue, Haizhou; Zhang, Yanwen; Weber, William J.
2015-06-16
A combination of an inelastic thermal spike model suitable for insulators and molecular dynamics simulations is used to study the effects of temperature and electronic energy loss on ion track formation, size and morphology in SrTiO3 systems with pre-existing disorder. We find temperature dependence of the ion track size. In addition, we find a threshold in the electronic energy loss for a given pre-existing defect concentration, which indicates a threshold in the synergy between the inelastic and elastic energy loss.
Conversion method of powder inelastic scattering data for one-dimensional systems
Tomiyasu, Dr. Keisuke; Fujita, Prof. Masaki; Kolesnikov, Alexander I; Bewley, Robert I.; Bull, Dr. Martyn J.; Bennington, Dr. Stephen M.
2009-01-01
Extracting dispersive magnetic excitations from inelastic neutron scattering data usually requires large single crystals. We present a simple yet powerful method for extracting such information from polycrystalline or powder data for one-dimensional systems. We demonstrate the effectiveness of this data treatment by extracting dispersion curves from powder inelastic neutron scattering data on the one-dimensional spin-half systems: CuGeO3 and Rb2Cu2Mo3O12. For many such materials it is not possible to grow sufficiently large crystals and this method offers a quick and efficient way to study their magnetic excitations.
Use of inelastic analysis to determine the response of packages to puncture accidents
Ammerman, D.J.; Ludwigsen, J.S.
1996-08-01
The accurate analytical determination of the response of radioactive material transportation packages to the hypothetical puncture accident requires inelastic analysis techniques. Use of this improved analysis method recudes the reliance on empirical and approximate methods to determine the safety for puncture accidents. This paper will discuss how inelastic analysis techniques can be used to determine the stresses, strains and deformations resulting from puncture accidents for thin skin materials with different backing materials. A method will be discussed to assure safety for all of these types of packages.
Photoluminescence due to inelastic exciton-exciton scattering in ZnMgO-alloy thin film
Chia, C. H.; Chen, J. N.; Hu, Y. M. [Department of Applied Physics, National University of Kaohsiung, Kaohsiung 81148, Taiwan (China)
2011-09-26
We studied the photoluminescence of ZnMgO thin film, grown by the radiofrequency sputtering method, as a function of excitation intensity and temperature. As the excitation intensity increases, a nonlinear emission band caused by the radiative recombination of the inelastic exciton-exciton scattering was detected at low temperature. We found that the inelastic exciton-exciton scattering process can only persist up to T {approx} 260 K. The nonlinear emission band observed at room temperature is due to the radiative recombination of the electron-hole plasma.
Residue management at Rocky Flats
Olencz, J.
1995-12-31
Past plutonium production and manufacturing operations conducted at the Rocky Flats Environmental Technology Site (RFETS) produced a variety of plutonium-contaminated by-product materials. Residues are a category of these materials and were categorized as {open_quotes}materials in-process{close_quotes} to be recovered due to their inherent plutonium concentrations. In 1989 all RFETS plutonium production and manufacturing operations were curtailed. This report describes the management of plutonium bearing liquid and solid wastes.
Vitrification of NAC process residue
Merrill, R.A.; Whittington, K.F.; Peters, R.D. [Pacific Northwest Lab., Richland, WA (United States)
1995-12-31
Vitrification tests have been performed with simulated waste compositions formulated to represent the residue which would be obtained from the treatment of low-level, nitrate wastes from Hanford and Oak Ridge by the nitrate to ammonia and ceramic (NAC) process. The tests were designed to demonstrate the feasibility of vitrifying NAC residue and to quantify the impact of the NAC process on the volume of vitrified waste. The residue from NAC treatment of low-level nitrate wastes consists primarily of oxides of aluminum and sodium. High alumina glasses were formulated to maximize the waste loading of the NAC product. Transparent glasses with up to 35 wt% alumina, and even higher contents in opaque glasses, were obtained at melting temperatures of 1,200 C to 1,400 C. A modified TCLP leach test showed the high alumina glasses to have good chemical durability, leaching significantly less than either the ARM-1 or the DWPF-EA high-level waste reference glasses. A significant increase in the final waste volume would be a major result of the NAC process on LLW vitrification. For Hanford wastes, NAC-treatment of nitrate wastes followed by vitrification of the residue will increase the final volume of vitrified waste by 50% to 90%; for Melton Valley waste from Oak Ridge, the increase in final glass volume will be 260% to 280%. The increase in volume is relative to direct vitrification of the waste in a 20 wt% Na{sub 2}O glass formulation. The increase in waste volume directly affects not only disposal costs, but also operating and/or capital costs. Larger plant size, longer operating time, and additional energy and additive costs are direct results of increases in waste volume. Such increases may be balanced by beneficial impacts on the vitrification process; however, those effects are outside the scope of this report.
Vitrification of NAC process residue
Merrill, R.A.; Whittington, K.F.; Peters, R.D.
1995-09-01
Vitrification tests have been performed with simulated waste compositions formulated to represent the residue which would be obtained from the treatment of low-level, nitrate wastes from Hanford and Oak Ridge by the nitrate to ammonia and ceramic (NAC) process. The tests were designed to demonstrate the feasibility of vitrifying NAC residue and to quantify the impact of the NAC process on the volume of vitrified waste. The residue from NAC treatment of low-level nitrate wastes consists primarily of oxides of aluminum and sodium. High alumina glasses were formulated to maximize the waste loading of the NAC product. Transparent glasses with up to 35 wt% alumina, and even higher contents in opaque glasses, were obtained at melting temperatures of 1200{degrees}C to 1400{degrees}C. A modified TCLP leach test showed the high alumina glasses to have good chemical durability, leaching significantly less than either the ARM-1 or the DWPF-EA high-level waste reference glasses. A significant increase in the final waste volume would be a major result of the NAC process on LLW vitrification. For Hanford wastes, NAC-treatment of nitrate wastes followed by vitrification of the residue will increase the final volume of vitrified waste by 50% to 90%; for Melton Valley waste from Oak Ridge, the increase in final glass volume will be 260% to 280%. The increase in volume is relative to direct vitrification of the waste in a 20 wt% Na{sub 2}O glass formulation. The increase in waste volume directly affects not only disposal costs, but also operating and/or capital costs. Larger plant size, longer operating time, and additional energy and additive costs are direct results of increases in waste volume. Such increases may be balanced by beneficial impacts on the vitrification process; however, those effects are outside the scope of this report.
Turro, Nicholas J.
Inelastic neutron scattering spectrum of H2@C60 and its temperature dependence decoded using://jcp.aip.org/about/rights_and_permissions #12;THE JOURNAL OF CHEMICAL PHYSICS 139, 064309 (2013) Inelastic neutron scattering spectrum of H2@C60 quantum cal- culations of the inelastic neutron scattering (INS) spectra of this prototypical endohedral
Rey, Patrice F.
Biological control of Cl/Br and low sulfate concentration in a 3.5-Gyr-old seawater from North Pole hydrothermal alteration of the 3.49 Ga Dresser Formation, North Pole Dome, Western Australia. Texturally to be the cause of Cl/Br fractionation between hydrothermal fluids and the bNorth Pole seawaterQ end-member. We
Bornemann, Jens
Decomposition for Pole-Free Solutions of Homogeneous Matrix Equations as Applied to Numerical Modeling Methods to poles and steep gradients in the determinant function are eliminated. The proposed technique example of a conductor-backed slotline MMIC structure illustrates the advautage of the pole
Spudis, Paul D.
conditions at the lunar south pole D. Ben J. Bussey ESA/ESTEC, Noordwijk, The Netherlands Paul D. Spudis shadowedregions at the lunar poles. Clementine, by providing the first con- tiguouscoverageof the Moon, hasenabledthe productionof an illumination map of the south pole. This map showsthe extent of the areas
Hu, Yongyun
simulations with IABP/POLES observations Jiping Liu,1 Zhanhai Zhang,2 Yongyun Hu,3 Liqi Chen,4 Yongjiu Dai,5 Surface (IABP/POLES) observations for the period 1979 1999. The reanalyses, including the National Forecast 40-year Reanalysis (ERA40), show encouraging agreement with the IABP/POLES observations, although
Millimeter Wavelength Brightness Fluctuations of the Atmosphere Above the South Pole
Bussmann, R S; Kuo, C L
2004-01-01
We report measurements of the millimeter wavelength brightness fluctuations produced by the atmosphere above the South Pole made with the Arcminute Cosmology Bolometer Array Receiver (ACBAR). The data span the 2002 Austral winter during which ACBAR was mounted on the Viper telescope at the South Pole. We recover the atmospheric signal in the presence of instrument noise by calculating the correlation between signals from distinct elements of the ACBAR bolometer array. With this method, it is possible to measure atmospheric brightness fluctuations with high SNR even under the most stable atmospheric conditions. The observed atmospheric signal is characterized by the parameters of the Komolgorov-Taylor (KT) model, which are the amplitude and power law exponent describing the atmospheric power spectrum, and the two components of the wind angular velocity at the time of the observation. The KT model is typically a good description of the observed fluctuations, and fits to the data produce values of the Komolgorov...
Pattern formation of microtubules and motors: Inelastic interaction of polar rods Igor S. Aranson1
Tsimring, Lev S.
Pattern formation of microtubules and motors: Inelastic interaction of polar rods Igor S. Aranson1 and Lev S. Tsimring2 1 Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois, 60439, USA leads to the formation of vortices and for large density and/or kernel anisotropy asters seen in recent
The structure of the nucleon Elastic and deep inelastic scattering from nucleons, 19561973
Murayama, Hitoshi
, scattering of electrons by protons and neutrons is open to direct interpretation. For the scattering8 The structure of the nucleon Elastic and deep inelastic scattering from nucleons, 19561973 Hadronic scattering experiments produced extensive and rich data revealing reso- nances and regularities
Pan, Kai, S.M. Massachusetts Institute of Technology
2013-01-01
An experiment that measured the parity violating (PV) asymmetry Ad in e- 2H deep inelastic scattering (DIS) at Q2 ~ 1.10 and 1.90 (GeV/c) 2 and XB ~ 0.3 was completed in experimental Hall A at the Thomas Jefferson National ...
Vibration-induced inelastic effects in the electron transport through multisite molecular bridges
Natalya A. Zimbovskaya; Maija M. Kuklja
2009-04-29
We theoretically analyzed inelastic effects in the electron transport through molecular junctions originating from electron-vibron interactions. The molecular bridge was simulated by a periodic chain of identical interacting hydrogen-like atoms providing a set of energy states for the electron tunneling. To avoid difficulties inevitably arising when advanced computational techniques are employed to study inelastic electron transport through multilevel bridges, we propose and develop a semiphenomenological approach. The latter is based on the Buttiker's dephasing model within the scattering matrix formalism. The advantage of the proposed approach is that it allows to analytically study various inelastic effects on the conduction through molecular junctions including multilevel bridges. Here, we apply this approach to describe features associated with electron energy transfer to vibrational phonons which appear in the inelastic tunneling spectra of electrons. In the particular case of a single level bridge our results agree with those obtained by self-consitent calculations carried out within the nonequilibrium Green's functions method validating the usefulness of the suggested approach.
LETTER doi:10.1038/nature09866 Controlling inelastic light scattering quantum
Wang, Feng
with transition energies close to the laser photon energy. Here we achieve this goal by combining highly efficient transport, optical transmis- sion and inelastic light scattering are measured on the same graphene devices- mediate electronic states, which then generate crystal elementary excitations and radiate energy
Right Renal Vein Aplasia Associated With Diverted Renal Venous Drainage Through Lower Pole
Bozlar, Ugur, E-mail: ubozlar@yahoo.co [Gulhane Military Medical School, Assistant Professor, Department of Radiology (Turkey); Ugurel, Mehmet Sahin [Gulhane Military Medical School, Associate Professor, Department of Radiology (Turkey); Bedir, Selahattin [Gulhane Military Medical School, Assistant Professor, Department of Urology (Turkey); Ors, Fatih [Gulhane Military Medical School, Assistant Professor, Department of Radiology (Turkey); Coskun, Unsal [Gulhane Military Medical Academy, Turkish Armed Forces Rehabilitation Center, Division of Radiology (Turkey); Aydur, Emin [Gulhane Military Medical School, Assistant Professor, Department of Urology (Turkey)
2008-07-15
We report a unique anomalous renal venous drainage on a 25-year-old man who had congenital absence of the right renal vein and an aberrant venous drainage through the lower pole of the kidney into the inferior vena cava. To our knowledge, this anomaly has not been previously reported in the peer-reviewed literature. State-of-the-art imaging findings are presented.
Measurement of sound speed vs. depth in South Pole ice: pressure waves and shear waves
IceCube Collaboration; Klein, Spencer
2009-06-04
We have measured the speed of both pressure waves and shear waves as a function of depth between 80 and 500 m depth in South Pole ice with better than 1% precision. The measurements were made using the South Pole Acoustic Test Setup (SPATS), an array of transmitters and sensors deployed in the ice at the South Pole in order to measure the acoustic properties relevant to acoustic detection of astrophysical neutrinos. The transmitters and sensors use piezoceramics operating at {approx}5-25 kHz. Between 200 m and 500 m depth, the measured profile is consistent with zero variation of the sound speed with depth, resulting in zero refraction, for both pressure and shear waves. We also performed a complementary study featuring an explosive signal propagating vertically from 50 to 2250 m depth, from which we determined a value for the pressure wave speed consistent with that determined for shallower depths, higher frequencies, and horizontal propagation with the SPATS sensors. The sound speed profile presented here can be used to achieve good acoustic source position and emission time reconstruction in general, and neutrino direction and energy reconstruction in particular. The reconstructed quantities could also help separate neutrino signals from background.
Process to recycle shredder residue
Jody, Bassam J. (Chicago, IL); Daniels, Edward J. (Oak Lawn, IL); Bonsignore, Patrick V. (Channahon, IL)
2001-01-01
A system and process for recycling shredder residue, in which separating any polyurethane foam materials are first separated. Then separate a fines fraction of less than about 1/4 inch leaving a plastics-rich fraction. Thereafter, the plastics rich fraction is sequentially contacted with a series of solvents beginning with one or more of hexane or an alcohol to remove automotive fluids; acetone to remove ABS; one or more of EDC, THF or a ketone having a boiling point of not greater than about 125.degree. C. to remove PVC; and one or more of xylene or toluene to remove polypropylene and polyethylene. The solvents are recovered and recycled.
RESIDUAL STRESSES IN 3013 CONTAINERS
Mickalonis, J.; Dunn, K.
2009-11-10
The DOE Complex is packaging plutonium-bearing materials for storage and eventual disposition or disposal. The materials are handled according to the DOE-STD-3013 which outlines general requirements for stabilization, packaging and long-term storage. The storage vessels for the plutonium-bearing materials are termed 3013 containers. Stress corrosion cracking has been identified as a potential container degradation mode and this work determined that the residual stresses in the containers are sufficient to support such cracking. Sections of the 3013 outer, inner, and convenience containers, in both the as-fabricated condition and the closure welded condition, were evaluated per ASTM standard G-36. The standard requires exposure to a boiling magnesium chloride solution, which is an aggressive testing solution. Tests in a less aggressive 40% calcium chloride solution were also conducted. These tests were used to reveal the relative stress corrosion cracking susceptibility of the as fabricated 3013 containers. Significant cracking was observed in all containers in areas near welds and transitions in the container diameter. Stress corrosion cracks developed in both the lid and the body of gas tungsten arc welded and laser closure welded containers. The development of stress corrosion cracks in the as-fabricated and in the closure welded container samples demonstrates that the residual stresses in the 3013 containers are sufficient to support stress corrosion cracking if the environmental conditions inside the containers do not preclude the cracking process.
High-resolution local gravity model of the south pole of the Moon from GRAIL extended mission data
Goossens, Sander
We estimated a high-resolution local gravity field model over the south pole of the Moon using data from the Gravity Recovery and Interior Laboratory's extended mission. Our solution consists of adjustments with respect ...
Ken-ichiroh Yoshino; Takao Aoki; Akira Furusawa
2006-09-15
Continuous-wave light beams with broadband Einstein-Podolsky-Rosen correlation (Einstein-Podolsky-Rosen beams) are created with two independent squeezed vacua generated by two periodically-poled lithium niobate waveguides and a half beam splitter.
Macomber, Bryan A
2012-01-01
The goal of this thesis is to explore potential designs for a table that attaches to poles and street signs outside food trucks. A convenient placement of tables could greatly facilitate and improve the eating experience ...
Chung-Chieh Fang
2012-11-19
Nonlinear systems, such as switching DC-DC boost or buck converters, have rich dynamics. A simple one-dimensional discrete-time model is used to analyze the boost or buck converter in discontinuous conduction mode. Seven different control schemes (open-loop power stage, voltage mode control, current mode control, constant power load, constant current load, constant-on-time control, and boundary conduction mode) are analyzed systematically. The linearized dynamics is obtained simply by taking partial derivatives with respect to dynamic variables. In the discrete-time model, there is only a single pole and no zero. The single closed-loop pole is a linear combination of three terms: the open-loop pole, a term due to the control scheme, and a term due to the non-resistive load. Even with a single pole, the phase response of the discrete-time model can go beyond -90 degrees as in the two-pole average models. In the boost converter with a resistive load under current mode control, adding the compensating ramp has no effect on the pole location. Increasing the ramp slope decreases the DC gain of control-to-output transfer function and increases the audio-susceptibility. Similar analysis is applied to the buck converter with a non-resistive load or variable switching frequency. The derived dynamics agrees closely with the exact switching model and the past research results.
Particulate residue separators for harvesting devices
Hoskinson, Reed L.; Kenney, Kevin L.; Wright, Christopher T.; Hess, John R.
2010-06-29
A particulate residue separator and a method for separating a particulate residue stream may include a plenum borne by a harvesting device, and have a first, intake end and a second, exhaust end; first and second particulate residue air streams which are formed by the harvesting device and which travel, at least in part, along the plenum and in a direction of the second, exhaust end; and a baffle assembly which is located in partially occluding relation relative to the plenum, and which substantially separates the first and second particulate residue air streams.
Methods of separating particulate residue streams
Hoskinson, Reed L. (Rigby, ID); Kenney, Kevin L. (Idaho Falls, ID); Wright, Christopher T. (Idaho Falls, ID); Hess, J. Richard (Idaho Falls, ID)
2011-04-05
A particulate residue separator and a method for separating a particulate residue stream may include an air plenum borne by a harvesting device, and have a first, intake end and a second, exhaust end; first and second particulate residue air streams that are formed by the harvesting device and that travel, at least in part, along the air plenum and in a direction of the second, exhaust end; and a baffle assembly that is located in partially occluding relation relative to the air plenum and that substantially separates the first and second particulate residue air streams.
Huang, Jin, Ph. D. Massachusetts Institute of Technology
2012-01-01
In this thesis I discuss the first measurement of the beam-target double-spin asymmetry ALT for charged pion electroproduction in deep inelastic electron scattering on a transversely polarized 3He target. These data were ...
Characterization Report on Sand, Slag, and Crucible Residues and on Fluoride Residues
Murray, A.M.
1999-02-10
This paper reports on the chemical characterization of the sand, slag, and crucible (SS and C) residues and the fluoride residues that may be shipped from the Rocky Flats Environmental Technology Site (RFETS) to Savannah River Site (SRS).
A Benchmark Study on Casting Residual Stress
Johnson, Eric M. [John Deere -- Moline Tech Center; Watkins, Thomas R [ORNL; Schmidlin, Joshua E [ORNL; Dutler, S. A. [MAGMA Foundry Technologies, Inc.
2012-01-01
Stringent regulatory requirements, such as Tier IV norms, have pushed the cast iron for automotive applications to its limit. The castings need to be designed with closer tolerances by incorporating hitherto unknowns, such as residual stresses arising due to thermal gradients, phase and microstructural changes during solidification phenomenon. Residual stresses were earlier neglected in the casting designs by incorporating large factors of safety. Experimental measurement of residual stress in a casting through neutron or X-ray diffraction, sectioning or hole drilling, magnetic, electric or photoelastic measurements is very difficult and time consuming exercise. A detailed multi-physics model, incorporating thermo-mechanical and phase transformation phenomenon, provides an attractive alternative to assess the residual stresses generated during casting. However, before relying on the simulation methodology, it is important to rigorously validate the prediction capability by comparing it to experimental measurements. In the present work, a benchmark study was undertaken for casting residual stress measurements through neutron diffraction, which was subsequently used to validate the accuracy of simulation prediction. The stress lattice specimen geometry was designed such that subsequent castings would generate adequate residual stresses during solidification and cooling, without any cracks. The residual stresses in the cast specimen were measured using neutron diffraction. Considering the difficulty in accessing the neutron diffraction facility, these measurements can be considered as benchmark for casting simulation validations. Simulations were performed using the identical specimen geometry and casting conditions for predictions of residual stresses. The simulation predictions were found to agree well with the experimentally measured residual stresses. The experimentally validated model can be subsequently used to predict residual stresses in different cast components. This enables incorporation of the residual stresses at the design phase along with external loads for accurate predictions of fatigue and fracture performance of the cast components.
Millimeter Wavelength Brightness Fluctuations of the Atmosphere Above the South Pole
R. S. Bussmann; W. L. Holzapfel; C. L. Kuo
2004-12-02
We report measurements of the millimeter wavelength brightness fluctuations produced by the atmosphere above the South Pole made with the Arcminute Cosmology Bolometer Array Receiver (ACBAR). The data span the 2002 Austral winter during which ACBAR was mounted on the Viper telescope at the South Pole. We recover the atmospheric signal in the presence of instrument noise by calculating the correlation between signals from distinct elements of the ACBAR bolometer array. With this method, it is possible to measure atmospheric brightness fluctuations with high SNR even under the most stable atmospheric conditions. The observed atmospheric signal is characterized by the parameters of the Komolgorov-Taylor (KT) model, which are the amplitude and power law exponent describing the atmospheric power spectrum, and the two components of the wind angular velocity at the time of the observation. The KT model is typically a good description of the observed fluctuations, and fits to the data produce values of the Komolgorov exponent that are consistent with theoretical expectations. By combining the wind angular velocity results with measurements of the wind linear velocity, we find that the altitude of the observed atmospheric fluctuations is consistent with the distribution of water vapor determined from radiosonde data. For data corresponding to frequency passbands centered on 150, 219, and 274 GHz, we obtain median fluctuation power amplitudes of [10, 38, 74] mK^{2} rad^{-5/3} in Rayleigh-Jeans temperature units. Comparing with previous work, we find that these median amplitudes are approximately an order of magnitude smaller than those found at the South Pole during the Austral summer and at least 30 times lower than found at the ALMA site in the Atacama desert.
Thermal effects on neutrino-nucleus inelastic scattering in stellar environments
Alan A. Dzhioev; A. I. Vdovin; V. Yu. Ponomarev; J. Wambach
2010-12-12
Thermal effects for inelastic neutrino-nucleus scattering off even-even nuclei in the iron region are studied. Allowed and first-forbidden contributions to the cross sections are calculated within the quasiparticle random phase approximation, extended to finite temperatures within the Thermo-Field-Dynamics formalism. The GT$_0$ strength distribution at finite temperatures is calculated for the sample nucleus $^{54}$Fe. The neutral-current neutrino-nucleus inelastic cross section is calculated for relevant temperatures during the supernova core collapse. The thermal population of the excited states significantly enhances the cross section at low neutrino energies. In agreement with studies using a large scale shell-model approach the enhancement is mainly due to neutrino up-scattering at finite temperatures.
Fusion of light exotic nuclei at near-barrier energies : effect of inelastic excitation
P. Banerjee; K. Krishan; S. Bhattacharya; C. Bhattacharya
2002-02-08
The effect of inelastic excitation of exotic light projectiles (proton- as well as neutron-rich) $^{17}$F and $^{11}$Be on fusion with heavy target has been studied at near-barrier energies. The calculations have been performed in the coupled channels approach where, in addition to the normal coupling of the ground state of the projectile to the continuum, inelastic excitation of the projectile to the bound excited state and its coupling to the continuum have also been taken into consideration. The inclusion of these additional couplings has been found to have significant effect on the fusion excitation function of neutron-rich $^{11}$Be on $^{208}$Pb whereas the effect has been observed to be nominal for the case of proton-rich $^{17}$F on the same target. The pronounced effect of the channel coupling on the fusion process in case of $^{11}$Be is attributed to its well-developed halo structure.
Polarized Deep Inelastic Scattering Off the "Neutron" From Gauge/String Duality
Jian-Hua Gao; Zong-Gang Mou
2010-05-25
We investigate deep inelastic scattering off the polarized "neutron" using gauge/string duality. The "neutron" corresponds to a supergravity mode of the neutral dilatino. Through introducing the Pauli interaction term into the action in $\\textrm{AdS}_{5}$ space, we calculate the polarized deep inelastic structure functions of the "neutron" in supergravity approximation at large t' Hooft coupling $\\lambda$ and finite $x$ with $\\lambda^{-1/2}\\ll xneutron" are power suppressed at the same order as the ones of the "proton." Especially, we find the Burkhardt-Cottingham-like sum rule, which is satisfied in the work by Gao and Xiao, is broken due to the Pauli interaction term. We also illustrate how such a Pauli interaction term can arise naturally from higher dimensional fermion-graviton coupling through the usual Kaluza-Klein reduction.
Measurement of Leading Neutron Production in Deep-Inelastic Scattering at HERA
H1 Collaboration
2010-01-04
The production of leading neutrons, where the neutron carries a large fraction x_L of the incoming proton's longitudinal momentum, is studied in deep-inelastic positron-proton scattering at HERA. The data were taken with the H1 detector in the years 2006 and 2007 and correspond to an integrated luminosity of 122 pb^{-1}. The semi-inclusive cross section is measured in the phase space defined by the photon virtuality 6 neutron transverse momentum p_T neutron structure function, F_2^{LN(3)}(Q^2,x,x_L), and the fraction of deep-inelastic scattering events containing a leading neutron are studied as a function of Q^2, x and x_L. Assuming that the pion exchange mechanism dominates leading neutron production, the data provide constraints on the shape of the pion structure function.
Measurement of parity-violating asymmetry in electron-deuteron inelastic scattering
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Wang, D.; Pan, K.; Subedi, R.; Ahmed, Z.; Allada, K.; Aniol, K. A.; Armstrong, D. S.; Arrington, J.; Bellini, V.; Beminiwattha, R.; et al
2015-04-01
The parity-violating asymmetries between a longitudinally-polarized electron beam and an unpolarized deuterium target have been measured recently. The measurement covered two kinematic points in the deep inelastic scattering region and five in the nucleon resonance region. We provide here details of the experimental setup, data analysis, and results on all asymmetry measurements including parity-violating electron asymmetries and those of inclusive pion production and beam-normal asymmetries. The parity-violating deep-inelastic asymmetries were used to extract the electron-quark weak effective couplings, and the resonance asymmetries provided the first evidence for quark-hadron duality in electroweak observables. These electron asymmetries and their interpretation were publishedmore »earlier, but are presented here in more detail.« less
Measurement of Parity-Violating Asymmetry in Electron-Deuteron Inelastic Scattering
D. Wang; K. Pan; R. Subedi; Z. Ahmed; K. Allada; K. A. Aniol; D. S. Armstrong; J. Arrington; V. Bellini; R. Beminiwattha; J. Benesch; F. Benmokhtar; W. Bertozzi; A. Camsonne; M. Canan; G. D. Cates; J. -P. Chen; E. Chudakov; E. Cisbani; M. M. Dalton; C. W. de Jager; R. De Leo; W. Deconinck; X. Deng; A. Deur; C. Dutta; L. El Fassi; J. Erler; D. Flay; G. B. Franklin; M. Friend; S. Frullani; F. Garibaldi; S. Gilad; A. Giusa; A. Glamazdin; S. Golge; K. Grimm; K. Hafidi; J. -O. Hansen; D. W. Higinbotham; R. Holmes; T. Holmstrom; R. J. Holt; J. Huang; C. E. Hyde; C. M. Jen; D. Jones; Hoyoung Kang; P. M. King; S. Kowalski; K. S. Kumar; J. H. Lee; J. J. LeRose; N. Liyanage; E. Long; D. McNulty; D. J. Margaziotis; F. Meddi; D. G. Meekins; L. Mercado; Z. -E. Meziani; R. Michaels; M. Mihovilovic; N. Muangma; K. E. Mesick; S. Nanda; A. Narayan; V. Nelyubin; A. Nuruzzaman; Y. Oh; D. Parno; K. D. Paschke; S. K. Phillips; X. Qian; Y. Qiang; B. Quinn; A. Rakhman; P. E. Reimer; K. Rider; S. Riordan; J. Roche; J. Rubin; G. Russo; K. Saenboonruang; A. Saha; B. Sawatzky; A. Shahinyan; R. Silwal; S. Širca; P. A. Souder; R. Suleiman; V. Sulkosky; C. M. Sutera; W. A. Tobias; G. M. Urciuoli; B. Waidyawansa; B. Wojtsekhowski; L. Ye; B. Zhao; X. Zheng
2014-11-12
The parity-violating asymmetries between a longitudinally-polarized electron beam and an unpolarized deuterium target have been measured recently. The measurement covered two kinematic points in the deep inelastic scattering region and five in the nucleon resonance region. We provide here details of the experimental setup, data analysis, and results on all asymmetry measurements including parity-violating electron asymmetries and those of inclusive pion production and beam-normal asymmetries. The parity-violating deep-inelastic asymmetries were used to extract the electron-quark weak effective couplings, and the resonance asymmetries provided the first evidence for quark-hadron duality in electroweak observables. These electron asymmetries and their interpretation were published earlier, but are presented here in more detail.
Transmission of a quantum state in a periodically poled nonlinear crystal
Ranjit Singh
2010-05-03
Theoretical calculations on transmission of quantum states such as Schr\\"{o}dinger cat (SC) states are considered in a periodically poled nonlinear crystal (PPNC). Combinations of various initial states (SC, coherent (C),and vacuum (V)) of light waves at frequencies $\\omega_{e}$ and $3\\omega_{e}$ at the input of a PPNC are studied. It is shown that the transmission and interference between superposition of macroscopically distinguishable states can be achieved by using a PPNC. Visualization and analyzes of transmission and interference processes are demonstrated with the help of reduced Wigner quasi-probability distribution functions of considered light waves.
Regge trajectory of the f0(500) resonance from a dispersive connection to its pole
Nebreda, J.; Londergan, J. Timothy; Pelaez, Jose R.; Szczepaniak, Adam P.
2014-11-01
We report here our results on how to obtain the Regge trajectory of a resonance from its pole in a scattering process by imposing analytic constraints in the complex angular momentum plane. The method, suited for resonances that dominate an elastic scattering amplitude, has been applied to the ? (770) and the f0(500) resonances. Whereas for the former we obtain a linear Regge trajectory, characteristic of ordinary quark-antiquark states, for the latter we find a non-linear trajectory with a much smaller slope at the resonance mass. This provides a strong indication of the non-ordinary nature of the sigma meson.
Far-ultraviolet Observations of the North Ecliptic Pole with SPEAR
Eric J. Korpela; Jerry Edelstein; Julia Kregenow; Kaori Nishikida; Kyoung-Wook Min; Dae-Hee Lee; Kwangsun Ryu; Wonyong Han; Uk-Won Nam; Jang-Hyun Park
2006-01-26
We present SPEAR/FIMS far-ultraviolet observations near the North Ecliptic Pole. This area, at b~30 degrees and with intermediate HI column, seems to be a fairly typical line of sight that is representative of general processes in the diffuse ISM. We detect a surprising number of emission lines of many elements at various ionization states representing gas phases from the warm neutral medium (WNM) to the hot ionized medium (HIM). We also detect fluorescence bands of H2, which may be due to the ubiquitous diffuse H2 previously observed in absorption.
Pole structure and biharmonic fields in conformal QFT in four dimensions
N. M. Nikolov; K. -H. Rehren; I. Todorov
2007-11-05
Imposing Huygens' Principle in a 4D Wightman QFT puts strong constraints on its algebraic and analytic structure. These are best understood in terms of ``biharmonic fields'', whose properties reflect the presence of infinitely many conserved tensor currents. In particular, a universal third-order partial differential equation is derived for the most singular parts of connected scalar correlation functions. This PDE gives rise to novel restrictions on the pole structure of higher correlation functions. An example of a six-point function is presented that cannot arise from free fields. This example is exploited to study the locality properties of biharmonic fields.
SPEAR far UV spectral imaging of highly ionized emission from the North Galactic Pole Region
B. Y. Welsh; J. Edelstein; E. Korpela
2007-06-06
We present far ultraviolet (FUV: 912 - 1750AA) spectral imaging observations recorded with the SPEAR satellite of the interstellar OVI (1032AA), CIV (1550AA), SiIV (1394AA), SiII* (1533AA) and AlII (1671AA) emission lines originating in a 60 x 30 degree rectangular region lying close to the North Galactic Pole. These data represent the first large area, moderate spatial resolution maps of the distribution of UV spectral-line emission originating the both the highly ionized medium (HIM) and the warm ionized medium (WIM) recorded at high galactic latitudes.
North Pole's Holiday Wish for An Energy Efficient 2012 | Department of
Broader source: Energy.gov (indexed) [DOE]
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAand DOEDepartmentNew JerseyEnergy The city of North Pole, Alaska, is
Two-loop enhancement factor for 1/Q corrections to event shapes in deep inelastic scattering
Mrinal Dasgupta; Bryan R. Webber
2000-10-22
We compute the two-loop enhancement factors for our earlier one-loop calculations of leading (1/Q) power corrections to the mean values of some event shape variables in deep inelastic lepton scattering. The enhancement is found to be equal to the universal ``Milan factor'' for those shape variables considered, provided the one-loop calculation is performed in a particular way. As a result, the phenomenology of power corrections to DIS event shapes remains largely unaffected.
The AdS Graviton/Pomeron Description of Deep Inelastic Scattering at Small x
Richard C. Brower; Marko Djuric; Ina Sarcevic; Chung-I Tan
2011-06-28
In the holographic or AdS/CFT dual to QCD, the Pomeron is identified with a Reggeized Graviton in $AdS_5$. We emphasize the importance of confinement, which in this context corresponds to a deformation of $AdS_5$ geometry in the IR. The holographic Pomeron provides a very good fit to the combined data from HERA for Deep Inelastic Scattering at small $x$, lending new confidence to this AdS dual approach to high energy diffractive scattering.
Structure and dynamics of cadmium telluride studied by x-ray and inelastic neutron scattering
Niedziela, J. L., E-mail: niedzielajl@ornl.gov [Instrument and Source Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Stone, M. B., E-mail: stonemb@ornl.gov [Quantum Condensed Matter Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
2014-09-08
We present a combined study of density functional theory, x-ray diffraction, and inelastic neutron scattering examining the temperature dependent structure and lattice dynamics of commercially available cadmium telluride. A subtle change in the structure is evinced near 80?K, which manifests also in the measured phonon density of states. There is no change to the long-range ordered structure. The implications of the change in relation to structural defects are discussed.
Structure and dynamics of cadmium telluride studied by x-ray and inelastic neutron scattering
Niedziela, Jennifer L [ORNL; Stone, Matthew B [ORNL
2014-01-01
We present a combined study of density functional theory, x-ray diffraction, and inelastic neutron scattering examining the temperature dependent structure and lattice dynamics of commercially available cadmium telluride. A subtle change in the structure is evinced near 80~K, which manifests also in the measured phonon density of states. There is no change to the long-range ordered structure. The implications of the change in relation to structural defects are discussed.
Measurements of transverse momentum in semi-inclusive deep-inelastic scattering at CLAS
K.A. Griffioen
2012-12-01
With mounting experimental evidence that only a small fraction of the proton's spin comes from the spins of its quarks and gluons, the quest for orbital angular momentum has begun. The parton distributions relevant to this depend on transverse quark momenta. Recent CLAS semi-inclusive deep-inelastic scattering measurements probe these new transverse-momentum-dependent parton distributions using longitudinally polarized beams and targets and detecting {pi}{sup +},{pi}{sup -} and {pi}{sup 0} in the final state.
Residual Toxicities of Insecticides to Cotton Insects.
Hightower, B. G.; Gaines, J. C.
1960-01-01
-ITHION. The residual toxicity of para- rliioti to the tumid spider mite was not affected by ~i1nul;ttetl rain when the spray was applied at a dosage c.cluiv;~lcnt to 0.3 pound of toxicant per acre. Kill5 or the cotton aphid on spray residues of 1),11;1thion were...
Tank 12H residuals sample analysis report
Oji, L. N.; Shine, E. P.; Diprete, D. P.; Coleman, C. J.; Hay, M. S.
2015-06-11
The Savannah River National Laboratory (SRNL) was requested by Savannah River Remediation (SRR) to provide sample preparation and analysis of the Tank 12H final characterization samples to determine the residual tank inventory prior to grouting. Eleven Tank 12H floor and mound residual material samples and three cooling coil scrape samples were collected and delivered to SRNL between May and August of 2014.
The Fourier state of a dilute granular gas described by the inelastic Boltzmann equation
J. Javier Brey; N. Khalil; M. J. Ruiz-Montero
2009-06-03
The existence of two stationary solutions of the nonlinear Boltzmann equation for inelastic hard spheres or disks is investigated. They are restricted neither to weak dissipation nor to small gradients. The one-particle distribution functions are assumed to have an scaling property, namely that all the position dependence occurs through the density and the temperature. At the macroscopic level, the state corresponding to both is characterized by uniform pressure, no mass flow, and a linear temperature profile. Moreover, the state exhibits two peculiar features. First, there is a relationship between the inelasticity of collisions, the pressure, and the temperature gradient. Second, the heat flux can be expressed as being linear in the temperature gradient, i.e. a Fourier-like law is obeyed. One of the solutions is singular in the elastic limit. The theoretical predictions following from the other one are compared with molecular dynamics simulation results and a good agreement is obtained in the parameter region in which the Fourier state can be actually observed in the simulations, namely not too strong inelasticity.
Nuclear Effects in Deep Inelastic Scattering of Charged-Current Neutrino off Nuclear
Duan ChunGui; Li GuangLie; Shen PengNian
2006-04-18
Nuclear effect in the neutrino-nucleus charged-Current inelastic scattering process is studied by analyzing the CCFR and NuTeV data. Structure functions $F_2(x,Q^2)$ and $xF_3(x,Q^2)$ as well as differential cross sections are calculated by using CTEQ parton distribution functions and EKRS and HKN nuclear parton distribution functions, and compared with the CCFR and NuTeV data. It is found that the corrections of nuclear effect to the differential cross section for the charged-current anti-neutrino scattering on nucleus are negligible, the EMC effect exists in the neutrino structure function $F_2(x,Q^2)$ in the large $x$ region, the shadowing and anti-shadowing effect occurs in the distribution functions of valence quarks in the small and medium $x$ region,respectively. It is also found that shadowing effects on $F_2(x,Q^2)$ in the small $x$ region in the neutrino-nucleus and the charged-lepton-nucleus deep inelastic scattering processes are different. It is clear that the neutrino-nucleus deep inelastic scattering data should further be employed in restricting nuclear parton distributions.
Interplay of threshold resummation and hadron mass corrections in deep inelastic processes
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Accardi, Alberto; Anderle, Daniele P.; Ringer, Felix
2015-02-01
We discuss hadron mass corrections and threshold resummation for deep-inelastic scattering lN-->l'X and semi-inclusive annihilation e+e- ? hX processes, and provide a prescription how to consistently combine these two corrections respecting all kinematic thresholds. We find an interesting interplay between threshold resummation and target mass corrections for deep-inelastic scattering at large values of Bjorken xB. In semi-inclusive annihilation, on the contrary, the two considered corrections are relevant in different kinematic regions and do not affect each other. A detailed analysis is nonetheless of interest in the light of recent high precision data from BaBar and Belle on pion and kaonmore »production, with which we compare our calculations. For both deep inelastic scattering and single inclusive annihilation, the size of the combined corrections compared to the precision of world data is shown to be large. Therefore, we conclude that these theoretical corrections are relevant for global QCD fits in order to extract precise parton distributions at large Bjorken xB, and fragmentation functions over the whole kinematic range.« less
Catalyst deactivation in residue hydrocracking
Oballa, M.C.; Wong, C.; Krzywicki, A. [Novacor Research and Technology Corp., Calgary, Alberta (Canada)
1994-12-31
The existence of a computer-controlled bench scale hydrocracking units at the authors site has made cheaper the non-stop running of experiments for long periods of time. It was, therefore possible to show, at minimal costs, when three hydrocracking catalysts in service reach their maximum lifetime. Different parameters which are helpful for catalyst life and activity predictions were calculated, e.g., relative catalyst age and the effectiveness factor. Experimental results compared well with model, giving them the minimum and maximum catalyst lifetime, as well as the deactivation profile with regard to sulfur and metals removal. Reaction rate constants for demetallization and desulfurization were also determined. Six commercial catalysts were evaluated at short term runs and the three most active were used for long term runs. Out of three catalysts tested for deactivation at long term runs, it was possible to choose one whose useful life was higher than the others. All runs were carried out in a Robinson-Mahoney continuous flow stirred tank reactor, using 50/50 volumetric mixture of Cold Lake/Lloydminster atmospheric residue and NiMo/Al{sub 2}O{sub 3} catalyst.
Deep Extragalactic Surveys around the Ecliptic Poles with AKARI (ASTRO-F)
Hideo Matsuhara; Takehiko Wada; Shuji Matsuura; Takao Nakagawa; Mitsunobu Kawada; Youichi Oyama; Chris P. Pearson; Shinki Oyabu; Toshinobu Takagi; Stephen Serjeant; Glenn J. White; Hitoshi Hanami; Hidenori Watarai; Tsutomu T. Takeuchi; Tadayuki Kodama; Nobuo Arimoto; Sadanori Okamura; Hyung Mok Lee; Soojong Pak; Myung Shin Im; Myung Gyoon Lee; Woojung Kim; Woong Seob Jeong; Koji Imai; Naofumi Fujishiro; Mai Shirahata; Toyoaki Suzuki; Chiaki Ihara; Itsuki Sakon
2006-05-23
AKARI (formerly ASTRO-F) is an infrared space telescope designed for an all-sky survey at 10-180 (mu)m, and deep pointed surveys of selected areas at 2-180 (mu)m. The deep pointed surveys with AKARI will significantly advance our understanding of galaxy evolution, the structure formation of the Universe, the nature of the buried AGNs, and the cosmic infrared background. Here we describe the important characteristics of the AKARI mission: the orbit, and the attitude control system, and investigate the optimum survey area based on the updated pre-flight sensitivities of AKARI, taking into account the cirrus confusion noise as well as the surface density of bright stars. The North Ecliptic Pole (NEP) is concluded to be the best area for 2-26 (mu)m deep surveys, while the low-cirrus noise regions around the South Ecliptic Pole (SEP) are worth considering for 50-180 (mu)m pointed surveys to high sensitivities limited by the galaxy confusion noise. Current observational plans of these pointed surveys are described in detail. Comparing these surveys with the deep surveys with the Spitzer Space Telescope, the AKARI deep surveys are particularly unique in respect of their continuous wavelength coverage over the 2-26 (mu)m range in broad-band deep imaging, and their slitless spectroscopy mode over the same wavelength range.
Refined rotational period, pole solution, and shape model for (3200) Phaethon
Ansdell, Megan; Meech, Karen J.; Kaluna, Heather; Hainaut, Olivier; Buie, Marc W.; Bauer, James; Dundon, Luke
2014-09-20
(3200) Phaethon exhibits both comet- and asteroid-like properties, suggesting it could be a rare transitional object such as a dormant comet or previously volatile-rich asteroid. This justifies detailed study of (3200) Phaethon's physical properties as a better understanding of asteroid-comet transition objects can provide insight into minor body evolution. We therefore acquired time series photometry of (3200) Phaethon over 15 nights from 1994 to 2013, primarily using the Tektronix 2048 × 2048 pixel CCD on the University of Hawaii 2.2 m telescope. We utilized light curve inversion to (1) refine (3200) Phaethon's rotational period to P = 3.6032 ± 0.0008 hr; (2) estimate a rotational pole orientation of ? = +85° ± 13° and ? = –20° ± 10°; and (3) derive a shape model. We also used our extensive light curve data set to estimate the slope parameter of (3200) Phaethon's phase curve as G ? 0.06, consistent with C-type asteroids. We discuss how this highly oblique pole orientation with a negative ecliptic latitude supports previous evidence for (3200) Phaethon's origin in the inner main asteroid belt as well as the potential for deeply buried volatiles fueling impulsive yet rare cometary outbursts.
OPTICAL IMAGES AND SOURCE CATALOG OF AKARI NORTH ECLIPTIC POLE WIDE SURVEY FIELD
Jeon, Yiseul; Im, Myungshin; Lee, Induk [Center for the Exploration of the Origin of the Universe (CEOU), Astronomy Program, Department of Physics and Astronomy, Seoul National University, Shillim-Dong, Kwanak-Gu, Seoul 151-742 (Korea, Republic of); Ibrahimov, Mansur [Ulugh Beg Astronomical Institute, 33 Astronomicheskaya str., Tashkent, 100052 (Uzbekistan); Lee, Hyung Mok; Lee, Myung Gyoon, E-mail: ysjeon@astro.snu.ac.k, E-mail: mim@astro.snu.ac.k [Astronomy Program, FPRD, Department of Physics and Astronomy, Seoul National University, Shillim-Dong, Kwanak-Gu, Seoul 151-742 (Korea, Republic of)
2010-09-15
We present the source catalog and the properties of the B-, R-, and I-band images obtained to support the AKARI North Ecliptic Pole Wide (NEP-Wide) survey. The NEP-Wide is an AKARI infrared imaging survey of the north ecliptic pole covering a 5.8 deg{sup 2} area over 2.5-6 {mu}m wavelengths. The optical imaging data were obtained at the Maidanak Observatory in Uzbekistan using the Seoul National University 4k x 4k Camera on the 1.5 m telescope. These images cover 4.9 deg{sup 2} where no deep optical imaging data are available. Our B-, R-, and I-band data reach the depths of {approx}23.4, {approx}23.1, and {approx}22.3 mag (AB) at 5{sigma}, respectively. The source catalog contains 96,460 objects in the R band, and the astrometric accuracy is about 0.''15 at 1{sigma} in each R.A. and decl. direction. These photometric data will be useful for many studies including identification of optical counterparts of the infrared sources detected by AKARI, analysis of their spectral energy distributions from optical through infrared, and the selection of interesting objects to understand the obscured galaxy evolution.
Gamow-Jordan Vectors and Non-Reducible Density Operators from Higher Order S-Matrix Poles
A. Bohm; M. Loewe; S. Maxson; P. Patuleanu; C. Puntmann; M. Gadella
1997-05-07
In analogy to Gamow vectors that are obtained from first order resonance poles of the S-matrix, one can also define higher order Gamow vectors which are derived from higher order poles of the S-matrix. An S-matrix pole of r-th order at z_R=E_R-i\\Gamma/2 leads to r generalized eigenvectors of order k= 0, 1, ... , r-1, which are also Jordan vectors of degree (k+1) with generalized eigenvalue (E_R-i\\Gamma/2). The Gamow-Jordan vectors are elements of a generalized complex eigenvector expansion, whose form suggests the definition of a state operator (density matrix) for the microphysical decaying state of this higher order pole. This microphysical state is a mixture of non-reducible components. In spite of the fact that the k-th order Gamow-Jordan vectors has the polynomial time-dependence which one always associates with higher order poles, the microphysical state obeys a purely exponential decay law.
M. Kawasaki; T. Maehara; M. Yonezawa
2008-10-30
Searching for infrastructure of the quantum mechanical system, we study trajectories of the s-wave poles of the S-matrix element with respect to a real phase $\\alpha$ in the complex momentum plane for a complex extension of real potentials by a phase factor $e^{i\\alpha}$. This complex extension relates the pole spectrum of the physical system with a potential to the spectrum of another system with the potential of the same shape but of opposite sign. There appear trajectories with the periodicity of $2\\pi$, $4\\pi$, and $\\infty$. The appearance of non-recurrent behavior of the trajectory for the change of phase $\\Delta \\alpha=2\\pi$ is clearly related with the existence of resonance poles for real repulsive potentials. Dynamical changes of trajectory structure are examined.
Liu, Jian
2008-01-01
Theory of Thermal Neutron Scattering. (Dover Publications,S. W. Lovesey, Theory of Neutron Scattering from Condensedwith the inelastic neutron scattering experiment results.
Goodman, Wayne
Neutron Scattering Study Chinta Sivadinarayana, Tushar V. Choudhary, Luke L. Daemen, Juergen Eckert of obvious interest for understanding this process. Vibrational spectroscopy by inelastic neutron scattering
Arabian crude-oil residues evaluated
Ali, M.F.; Bukhari, A.; Hasan, M.; Saleem, M.
1985-08-12
This article evaluates detailed physical and chemical characteristics for four important Saudi Arabian resids. Petroleum residues are composed of a mixture of large and complex hydrocarbon molecules along with one or more heteroatoms such as sulfur, oxygen, nitrogen, vanadium, and nickel. The amount of residue and its physical and chemical composition depend on the source of the crude oil and methods of processing. Residues from four Saudi Arabian crude oils produced by the Arabian American Oil Co. (Aramco) were evaluated. The crude oils are 38.5 degrees API Arabian Extra Light, 33.8 degrees API Arabian Light, 30.4 degrees Api Arabian Medium, and 28.03 degrees API Arabian Heavy. Results are presented and residue preparation, and physical and chemical characteristics are analyzed.
Residual stress in nanocrystalline nickel tungsten electrodeposits
Ziebell, Tiffany D. (Tiffany Dawn)
2011-01-01
Characterizing the residual stress of thick nanocrystalline electrodeposits poses several unique challenges due to their fine grain structure, thickness distribution, and matte surface. We employ a three-dimensional ...
Harvesting Residuals-Economic Energy Link
Owens, E. T.; Curtis, D. B.
1986-01-01
A description of systems used in integrated harvesting of quality and unmerchantable trees is outlined for three areas in New Brunswick, Canada. The silvicultural benefits and the use of residues as an alternative to ...
FINAL REPORT LGP Discrimination and Residual Risk Analysis on Standardized
Fernandez, Thomas
FINAL REPORT LGP Discrimination and Residual Risk Analysis on Standardized Test Sites Camp Sibert............................................................................................................... 10 2.1.6 Residual Risk Analysis
Gerhard Ritschel; Alexander Eisfeld
2014-08-19
We present a scheme to express a bath correlation function (BCF) corresponding to a given spectral density (SD) as a sum of damped harmonic oscillations. Such a representation is needed, for example, in many open quantum system approaches. To this end we introduce a class of fit functions that enables us to model ohmic as well as superohmic behavior. We show that these functions allow for an analytic calculation of the BCF using pole expansions of the temperature dependent hyperbolic cotangent. We demonstrate how to use these functions to fit spectral densities exemplarily for cases encountered in the description of photosynthetic light harvesting complexes. Finally, we compare absorption spectra obtained for different fits with exact spectra and show that it is crucial to take properly into account the behavior at small frequencies when fitting a given SD.
Acoustic noise in deep ice and environmental conditions at the South Pole
Timo Karg; for the IceCube Collaboration
2008-11-07
To study the acoustic properties of the Antarctic ice the South Pole Acoustic Test Setup (SPATS) was installed in the upper part of drill holes for the IceCube neutrino observatory. An important parameter for the design of a future acoustic neutrino telescope is the acoustic background noise in the ice and its spatial and temporal variations. We study the absolute noise level depth profile from SPATS data and discuss systematic uncertainties. The measured noise is very stable over one year of data taking, and we estimate the absolute noise level to be < 10 mPa in the frequency range from 10 kHz to 50 kHz at depths below 200 m. This noise level is of the same order of magnitude as observed by ocean based acoustic neutrino detection projects in good weather conditions.
V. Barone; M. Boglione; J. O. Gonzalez Hernandez; S. Melis
2015-04-03
We present a phenomenological analysis of the cos-phi and cos-2phi asymmetries in unpolarized semi-inclusive deep inelastic scattering, based on the recent multidimensional data released by the COMPASS and HERMES Collaborations. In the TMD framework, valid at relatively low transverse momenta, these asymmetries arise from intrinsic transverse momentum and transverse spin effects, and from their correlations. The role of the Cahn and Boer-Mulders effects in both azimuthal moments is explored up to order 1/Q. As the kinematics of the present experiments is dominated by the low-Q^2 region, higher-twist contributions turn out to be important, affecting the results of our fits.
Barone, V; Hernandez, J O Gonzalez; Melis, S
2015-01-01
We present a phenomenological analysis of the cos-phi and cos-2phi asymmetries in unpolarized semi-inclusive deep inelastic scattering, based on the recent multidimensional data released by the COMPASS and HERMES Collaborations. In the TMD framework, valid at relatively low transverse momenta, these asymmetries arise from intrinsic transverse momentum and transverse spin effects, and from their correlations. The role of the Cahn and Boer-Mulders effects in both azimuthal moments is explored up to order 1/Q. As the kinematics of the present experiments is dominated by the low-Q^2 region, higher-twist contributions turn out to be important, affecting the results of our fits.
Partonic Transverse Motion in Unpolarized Semi-Inclusive Deep Inelastic Scattering Processes
M. Boglione, S. Melis, A. Prokudin
2011-08-01
We analyse the role of partonic transverse motion in unpolarized Semi-Inclusive Deep Inelastic Scattering (SIDIS) processes. Imposing appropriate kinematical conditions, we find some constraints which fix an upper limit to the range of allowed k_perp values. We show that, applying these additional requirements on the partonic kinematics, we obtain different results with respect to the usual phenomenological approach based on the Gaussian smearing with analytical integration over an unlimited range of k_perp values. These variations are particularly interesting for some observables, like the < cos phi_h > azimuthal modulation of the unpolarized SIDIS cross section or the average transverse momentum of the final, detected hadron.
Deep inelastic scattering cross sections from the gauge/string duality
Ezequiel Koile; Nicolas Kovensky; Martin Schvellinger
2015-07-28
Differential cross sections of deep inelastic scattering of charged leptons from hadrons are investigated by using the gauge/string duality. We consider vector mesons derived from different holographic dual models obtaining a general expression. We focus on the strongly coupled regime of dual gauge theories for different values of the Bjorken parameter. We find new predictions which are particularly interesting for differential scattering cross sections of polarized leptons scattered off polarized vector mesons. We also carry out a detailed comparison of the moments of the structure functions with lattice QCD results.
Beauty Production in Deep Inelastic Scattering at HERA using Decays into Electrons
R. Shehzadi
2011-09-22
The results from a recent analysis on beauty production in deep inelastic scattering at HERA using decays into electrons from the ZEUS collaboration are presented. The fractions of events containing b quarks were extracted from a likelihood fit using variables sensitive to electron identification as well as to semileptonic decays. Total and differential cross sections were measured and compared with next-to-leading-order QCD calculations. The beauty contribution to the proton structure function F_2 was extracted from the double-differential cross sections.
Bent crystal analyzer without grooves for inelastic scattering -- first experimental results
Kushnir, V.I.; Macrander, A.T.
1996-11-01
A new design of a bent crystal analyzer for high energy resolution inelastic X-ray scattering has been recently proposed. It has been theoretically predicted that an analyzer with reflecting planes at a certain angle with respect to a crystal surface, bent with two different radii of curvature, will have the same energy resolution as a perfect crystal. The first experimental measurement obtained at the Advanced Photon Source of a bandwidth of such an analyzer is presented. The overall energy resolution of the analyzer and monochromator observed with a narrow beam is equal to 16.4 meV (FWHM) at 13.84 KeV.
PDF Nuclear Corrections for Charged Lepton and Neutrino Deep Inelastic Scattering Processes
I. Schienbein; J. Y. Yu; K. Kovarik; C. Keppel; J. G. Morfin; F. Olness; J. F. Owens
2010-02-11
We perform a \\chi^2-analysis of Nuclear Parton Distribution Functions (NPDFs) using neutral current charged-lepton Deeply Inelastic Scattering (DIS) and Drell-Yan data for several nuclear targets. The nuclear A dependence of the NPDFs is extracted in a next-to-leading order fit. We compare the nuclear corrections factors F2(Fe)/F2(D) for this charged-lepton data with other results from the literature. In particular, we compare and contrast fits based upon the charged-lepton DIS data with those using neutrino-nucleon DIS data.
Structure of ²??Pb populated in ²??Pb + ²??Pb deep-inelastic collisions*
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Shand, C. M.; Wilson, E.; Podolyák, Zs.; Grawe, H.; Brown, B. A.; Fornal, B.; Janssens, R. V. F.; Bowry, M.; Bunce, M.; Carpenter, M. P.; et al
2015-01-01
The yrast structure of 207Pb above the 13/2+ isomeric state has been investigated in deep-inelastic collisions of 208Pb and 208Pb at ATLAS, Argonne National Laboratory. New and previously observed transitions were measured using the Gammasphere detector array. The level scheme of 207Pb is presented up to ~ 6 MeV, built using coincidence and ?-ray intensity analyses. In addition, the spin and parity assignments of states were made, based on angular distributions and comparisons to shell model calculations.
Structure of ²??Pb populated in ²??Pb + ²??Pb deep-inelastic collisions*
Shand, C. M. [Univ. of Surrey, Guildford (United Kingdom); Wilson, E. [Univ. of Surrey, Guildford (United Kingdom); Podolyák, Zs. [Univ. of Surrey, Guildford (United Kingdom); Grawe, H. [GSI Helmholtzzentrum fur Schwerionenforschung GmbH, Darmstadt (Germany); Brown, B. A. [Michigan State Univ., East Lansing, MI (United States); Fornal, B. [The Henryk Niewodniczanski Institute of Nuclear Physics, Krakow (Poland); Janssens, R. V. F. [Argonne National Lab. (ANL), Argonne, IL (United States); Bowry, M. [Univ. of Surrey, Guildford (United Kingdom); Bunce, M. [Univ. of Surrey, Guildford (United Kingdom); Carpenter, M. P. [Argonne National Lab. (ANL), Argonne, IL (United States); Carroll, R. J. [Univ. of Surrey, Guildford (United Kingdom); Chiara, C. J. [Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Maryland, College Park, MD (United States); Cieplicka-Ory?czak, N. [The Henryk Niewodniczanski Institute of Nuclear Physics, Krakow (Poland); Deo, A. Y. [Univ. of Massachusetts, Lowell, MA (United States); Dracoulis, G. D. [Australian National Univ., Canberra, ACT (Australia); Hoffman, C. R. [Argonne National Lab. (ANL), Argonne, IL (United States); Kempley, R. S. [Univ. of Surrey, Guildford (United Kingdom); Kondev, F. G. [Argonne National Lab. (ANL), Argonne, IL (United States); Lane, G. J. [Australian National Univ., Canberra, ACT (Australia); Lauritsen, T. [Argonne National Lab. (ANL), Argonne, IL (United States); Lotay, G. [Univ. of Surrey, Guildford (United Kingdom); National Physics Lab., Teddington (United Kingdom); Reed, M. W. [Univ. of Surrey, Guildford (United Kingdom); Regan, P. H. [Univ. of Surrey, Guildford (United Kingdom); National Physics Lab., Teddington (United Kingdom); Rodriguez-Triguero, C. [Univ. of Brighton, Brighton (United Kingdom); Seweryniak, D. [Argonne National Lab. (ANL), Argonne, IL (United States); Szpak, B. [The Henryk Niewodniczanski Institute of Nuclear Physics, Krakow (Poland); Walker, P. M. [Univ. of Surrey, Guildford (United Kingdom); Zhu, S. [Argonne National Lab. (ANL), Argonne, IL (United States)
2015-01-01
The yrast structure of ^{207}Pb above the 13/2^{+} isomeric state has been investigated in deep-inelastic collisions of ^{208}Pb and ^{208}Pb at ATLAS, Argonne National Laboratory. New and previously observed transitions were measured using the Gammasphere detector array. The level scheme of ^{207}Pb is presented up to ~ 6 MeV, built using coincidence and ?-ray intensity analyses. In addition, the spin and parity assignments of states were made, based on angular distributions and comparisons to shell model calculations.
A. Deltuva
2011-08-22
We use exact four-boson scattering equations in the momentum-space framework to study the universal properties of shallow Efimov tetramers and their dependence on the two-boson scattering length. We demonstrate that, in contrast to previous predictions, the shallow tetramer in a particular experimentally unexplored regime is not an unstable bound state but an inelastic virtual state. This leads to a resonant behaviour of the atom-trimer scattering length and thereby to a resonant enhancement of the trimer relaxation in ultracold atom-trimer mixtures.
Deltuva, A
2011-01-01
We use exact four-boson scattering equations in the momentum-space framework to study the universal properties of shallow Efimov tetramers and their dependence on the two-boson scattering length. We demonstrate that, in contrast to previous predictions, the shallow tetramer in a certain experimentally unexplored regime is not an unstable bound state but inelastic virtual state. This leads to a resonant behaviour of the atom-trimer scattering length and thereby to a resonant enhancement of the trimer relaxation in ultracold atom-trimer mixtures.
Measurement of Dijet Production in Diffractive Deep-Inelastic Scattering at HERA
Schmitt, Stefan
2015-01-01
The production of dijets is measured in diffractive deep-inelastic scattering at HERA. The data were recorded with the H1 detector at DESY in the years 2003-2007. Diffractive events are selected by requiring a gap in the rapidity distribution of the hadronic systen, where no particles are produced. Two jets are selected with transverse momenta in the hadronic-centre-of-mass system larger than 4 and 5.5GeV, respectively. Cross sections are measured single- and doubledifferentially in various kinematic quantities. The data are found to be in good agreement with NLO QCD calculations based on diffractive parton densities determined frominclusive diffractive cross section measurements.
Nuclear shadowing in deep inelastic scattering on nuclei at low and medium Q^2
Bugaev, Edgar V
2015-01-01
Nuclear shadowing corrections to the structure functions of deep inelastic scattering of intermediate-mass nuclei are calculated at very low values of Bjorken x and small values of Q^2 (Q^2<5 GeV^2). The two-component approach (generalized VMD plus hard pomeron) is used for a description of the underlying virtual photon - nucleon interaction. The hard component of the nucleon structure function is calculated in a framework of the colour dipole model with dipole cross section having Regge-type energy dependence. Numerical results for nuclear shadowing corrections are compared with available data of E665 and NMC collaborations.
Mi, Chunting "Chris"
refineries, steel mills, and power plants [1][6]. Large solid pole motors are a special category of large virtual windings. Therefore, the two-axis theory can be used for the solid pole synchronous motor. We, starting performance, transformation coefficient, two-axis theory, virtual windings. I. INTRODUCTION LARGE
Electra-optic phenomena in gelatin-based poled polymer Z. Z. Ho, Ray T. Chen, and Robert Shih
Chen, Ray
Electra-optic phenomena in gelatin-based poled polymer Z. Z. Ho, Ray T. Chen, and Robert Shih lime gel has been constructed and demonstrated. The transmission spectrum of nitrophenol/gelatin shows-linked nature of the gelatin. This result indicates that both passive and active integrated optical devices can
Fang, Yao-Lung L
2015-01-01
We study photon correlations generated by scattering from three-level systems (3LS) in one dimension. The two systems studied are a 3LS in a semi-infinite waveguide (3LS plus a mirror) and two 3LS in an infinite waveguide (double 3LS). Our scattering approach naturally connects photon correlation effects with inelastically scattered photons; it corresponds to input-output theory in the weak-probe limit. At the resonance where electromagnetically induced transparency (EIT) occurs, we find that no photons are scattered inelastically and hence there are no induced correlations. Slightly away from EIT, the total inelastically scattered flux is large, being substantially enhanced due to the additional interference paths. This enhancement carries over to the two-photon correlation function, which exhibits non-classical behavior such as strong bunching with a very long time-scale. The long time scale originates from the slow-light effect associated with EIT.
Immobilization of Rocky Flats graphite fines residues
Rudisill, T.S.; Marra, J.C.; Peeler, D.K.
1999-07-01
The Savannah River Technology Center (SRTC) is developing an immobilization process for graphite fines residues generated during nuclear materials production activities at the Rocky Flats Environmental Technology Site (Rocky Flats). The continued storage of this material has been identified as an item of concern. The residue was generated during the cleaning of graphite casting molds and potentially contains reactive plutonium metal. The average residue composition is 73 wt% graphite, 15 wt% calcium fluoride (CaF{sub 2}), and 12 wt% plutonium oxide (PuO{sub 2}). Approximately 950 kg of this material are currently stored at Rocky Flats. The strategy of the immobilization process is to microencapsulate the residue by mixing with a sodium borosilicate (NBS) glass frit and heating at nominally 700 C. The resulting waste form would be sent to the Waste Isolation Pilot Plant (WIPP) for disposal. Since the PuO{sub 2} concentration in the residue averages 12 wt%, the immobilization process was required to meet the intent of safeguards termination criteria by limiting plutonium recoverability based on a test developed by Rocky Flats. The test required a plutonium recovery of less than 4 g/kg of waste form when a sample was leached using a nitric acid/CaF{sub 2} dissolution flowsheet. Immobilization experiments were performed using simulated graphite fines with cerium oxide (CeO{sub 2}) as a surrogate for PuO{sub 2} and with actual graphite fines residues. Small-scale surrogate experiments demonstrated that a 4:1 frit to residue ratio was adequate to prevent recovery of greater than 4 g/kg of cerium from simulated waste forms. Additional experiments investigated the impact of varying concentrations of CaF{sub 2} and the temperature/heating time cycle on the cerium recovery. Optimal processing conditions developed during these experiments were subsequently demonstrated at full-scale with surrogate materials and on a smaller scale using actual graphite fines.
Inelastic neutron scattering study of hydrogen in d8-THF/D2O ice clathrate Kimberly T. Tait,a
Downs, Robert T.
materials is of considerable interest from the per- spective of hydrogen storage for a future hydrogen fuelInelastic neutron scattering study of hydrogen in d8-THF/D2O ice clathrate Kimberly T. Tait,a Frans October 2007 In situ neutron inelastic scattering experiments on hydrogen adsorbed into a fully deutrated
Hall, Christopher
Large volume high-pressure cell for inelastic neutron scattering W. Wang, D. A. Sokolov, A. D for inelastic neutron scattering measurements of quantum fluids and solids Rev. Sci. Instrum. 84, 015101 (2013) TOF-SEMSANS--Time-of-flight spin-echo modulated small-angle neutron scattering J. Appl. Phys. 112
Energy production rates in fluid mixtures of inelastic rough hard spheres
Andrés Santos; Gilberto M. Kremer; Vicente Garzó
2010-07-16
The aim of this work is to explore the combined effect of polydispersity and roughness on the partial energy production rates and on the total cooling rate of a granular fluid mixture. We consider a mixture of inelastic rough hard spheres of different number densities, masses, diameters, moments of inertia, and mutual coefficients of normal and tangential restitution. Starting from the first equation of the BBGKY hierarchy, the collisional energy production rates associated with the translational and rotational temperatures ($T_i^\\text{tr}$ and $T_i^\\text{rot}$) are expressed in terms of two-body average values. Next, those average values are estimated by assuming a velocity distribution function based on maximum-entropy arguments, allowing us to express the energy production rates and the total cooling rate in terms of the partial temperatures and the parameters of the mixture. Finally, the results are applied to the homogeneous cooling state of a binary mixture and the influence of inelasticity and roughness on the temperature ratios $T_1^\\text{tr}/T_1^\\text{rot}$, $T_2^\\text{tr}/T_1^\\text{tr}$, and $T_2^\\text{rot}/T_1^\\text{rot}$ is analyzed.
Steady state in a gas of inelastic rough spheres heated by a uniform stochastic force
Francisco Vega Reyes; Andrés Santos
2015-11-04
We study here the steady state attained in a granular gas of inelastic rough spheres that is subject to a spatially uniform random volume force. The stochastic force has the form of the so-called white noise and acts by adding impulse to the particle translational velocities. We work out an analytical solution of the corresponding velocity distribution function from a Sonine polynomial expansion that displays energy non-equipartition between the translational and rotational modes, translational and rotational kurtoses, and translational-rotational velocity correlations. By comparison with a numerical solution of the Boltzmann kinetic equation (by means of the Direct Simulation Monte Carlo method) we show that our analytical solution provides a good description that is quantitatively very accurate in certain ranges of inelasticity and roughness. We also find three important features that make the forced granular gas steady state very different from the homogeneous cooling state (attained by an unforced granular gas). First, the marginal velocity distributions are always close to a Maxwellian. Second, there is a continuous transition to the purely smooth limit (where the effects of particle rotations are ignored). And third, the angular translational-rotational velocity correlations show a preference for a quasiperpendicular mutual orientation (which is called "lifted-tennis-ball" behavior).
Final-state interactions in semi-inclusive deep inelastic scattering off the Deuteron
Wim Cosyn, Misak Sargsian
2011-07-01
Semi-inclusive deep inelastic scattering off the Deuteron with production of a slow nucleon in recoil kinematics is studied in the virtual nucleon approximation, in which the final state interaction (FSI) is calculated within general eikonal approximation. The cross section is derived in a factorized approach, with a factor describing the virtual photon interaction with the off-shell nucleon and a distorted spectral function accounting for the final-state interactions. One of the main goals of the study is to understand how much the general features of the diffractive high energy soft rescattering accounts for the observed features of FSI in deep inelastic scattering (DIS). Comparison with the Jefferson Lab data shows good agreement in the covered range of kinematics. Most importantly, our calculation correctly reproduces the rise of the FSI in the forward direction of the slow nucleon production angle. By fitting our calculation to the data we extracted the W and Q{sup 2} dependences of the total cross section and slope factor of the interaction of DIS products, X, off the spectator nucleon. This analysis shows the XN scattering cross section rising with W and decreasing with an increase of Q{sup 2}. Finally, our analysis points at a largely suppressed off-shell part of the rescattering amplitude.
Disposal of Rocky Flats residues as waste
Dustin, D.F.; Sendelweck, V.S. . Rocky Flats Plant); Rivera, M.A. )
1993-01-01
Work is underway at the Rocky Flats Plant to evaluate alternatives for the removal of a large inventory of plutonium-contaminated residues from the plant. One alternative under consideration is to package the residues as transuranic wastes for ultimate shipment to the Waste Isolation Pilot Plant. Current waste acceptance criteria and transportation regulations require that approximately 1000 cubic yards of residues be repackaged to produce over 20,000 cubic yards of WIPP certified waste. The major regulatory drivers leading to this increase in waste volume are the fissile gram equivalent, surface radiation dose rate, and thermal power limits. In the interest of waste minimization, analyses have been conducted to determine, for each residue type, the controlling criterion leading to the volume increase, the impact of relaxing that criterion on subsequent waste volume, and the means by which rules changes may be implemented. The results of this study have identified the most appropriate changes to be proposed in regulatory requirements in order to minimize the costs of disposing of Rocky Flats residues as transuranic wastes.
Disposal of Rocky Flats residues as waste
Dustin, D.F.; Sendelweck, V.S.; Rivera, M.A.
1993-03-01
Work is underway at the Rocky Flats Plant to evaluate alternatives for the removal of a large inventory of plutonium-contaminated residues from the plant. One alternative under consideration is to package the residues as transuranic wastes for ultimate shipment to the Waste Isolation Pilot Plant. Current waste acceptance criteria and transportation regulations require that approximately 1000 cubic yards of residues be repackaged to produce over 20,000 cubic yards of WIPP certified waste. The major regulatory drivers leading to this increase in waste volume are the fissile gram equivalent, surface radiation dose rate, and thermal power limits. In the interest of waste minimization, analyses have been conducted to determine, for each residue type, the controlling criterion leading to the volume increase, the impact of relaxing that criterion on subsequent waste volume, and the means by which rules changes may be implemented. The results of this study have identified the most appropriate changes to be proposed in regulatory requirements in order to minimize the costs of disposing of Rocky Flats residues as transuranic wastes.
System and method for measuring residual stress
Prime, Michael B. (Los Alamos, NM)
2002-01-01
The present invention is a method and system for determining the residual stress within an elastic object. In the method, an elastic object is cut along a path having a known configuration. The cut creates a portion of the object having a new free surface. The free surface then deforms to a contour which is different from the path. Next, the contour is measured to determine how much deformation has occurred across the new free surface. Points defining the contour are collected in an empirical data set. The portion of the object is then modeled in a computer simulator. The points in the empirical data set are entered into the computer simulator. The computer simulator then calculates the residual stress along the path which caused the points within the object to move to the positions measured in the empirical data set. The calculated residual stress is then presented in a useful format to an analyst.
Turro, Nicholas J.
Inelastic neutron scattering of a quantum translator-rotator encapsulated in a closed fullerene, New York 10027, USA Received 1 July 2010; published 20 August 2010 We report an inelastic neutron-scattering inelastic neutron scattering INS ,6 and specific heat7 inves- tigations have recently been reported
Lin, Lin; Chen, Mohan; Yang, Chao; He, Lixin
2012-02-10
We describe how to apply the recently developed pole expansion plus selected inversion (PEpSI) technique to Kohn-Sham density function theory (DFT) electronic structure calculations that are based on atomic orbital discretization. We give analytic expressions for evaluating charge density, total energy, Helmholtz free energy and atomic forces without using the eigenvalues and eigenvectors of the Kohn-Sham Hamiltonian. We also show how to update the chemical potential without using Kohn-Sham eigenvalues. The advantage of using PEpSI is that it has a much lower computational complexity than that associated with the matrix diagonalization procedure. We demonstrate the performance gain by comparing the timing of PEpSI with that of diagonalization on insulating and metallic nanotubes. For these quasi-1D systems, the complexity of PEpSI is linear with respect to the number of atoms. This linear scaling can be observed in our computational experiments when the number of atoms in a nanotube is larger than a few hundreds. Both the wall clock time and the memory requirement of PEpSI is modest. This makes it even possible to perform Kohn-Sham DFT calculations for 10,000-atom nanotubes on a single processor. We also show that the use of PEpSI does not lead to loss of accuracy required in a practical DFT calculation.
The space density of cataclysmic variables: constraints from the ROSAT North Ecliptic Pole Survey
M. L. Pretorius; C. Knigge; D. O'Donoghue; J. P. Henry; I. M. Gioia; C. R. Mullis
2007-09-12
We use the ROSAT North Ecliptic Pole (NEP) survey to construct a small, but purely X-ray flux-limited sample of cataclysmic variable stars (CVs). The sample includes only 4 systems, 2 of which (RX J1715.6+6856 and RX J1831.7+6511) are new discoveries. We present time-resolved spectroscopy of the new CVs and measure orbital periods of 1.64 \\pm 0.02 h and 4.01\\pm 0.03 h for RX 1715.6+6856 and RX J1831.7+6511, respectively. We also estimate distances for all the CVs in our sample, based mainly on their apparent brightness in the infrared. The space density of the CV population represented by our small sample is (1.1 +2.3/-0.7) 10^-5 pc^-3. We can also place upper limits on the space density of any sub-population of CVs too faint to be included in the NEP survey. In particular, we show that if the overall space density of CVs is as high as 2 10^-4 pc^-3 (as has been predicted theoretically), the vast majority of CVs must be fainter than L_X \\simeq 2 10^29 erg/s.
Miller, William H.
-IVR is approximate. Some of the correlation functions involve only linear operators, and others involve nonlinearTest of the consistency of various linearized semiclassical initial value time correlation functions in application to inelastic neutron scattering from liquid para-hydrogen Jian Liua and William H
Ricardo J. Alonso
2008-04-10
The Cauchy problem for the inelastic Boltzmann equation is studied for small data. Existence and uniqueness of mild and weak solutions is obtained for sufficiently small data that lies in the space of functions bounded by Maxwellians. The technique used to derive the result is the well known iteration process of Kaniel and Shinbrot.
Schirmacher, Walter
Inelastic neutron and low-frequency Raman scattering in a niobium-phosphate glass for Raman gain: Raman scattering; Neutron scattering; Raman gain; Boson peak We present measurements of the vibrational, extracted from specific-heat or neutron scattering measurements [7,8]. Only very recently two of the present
Prokudin, Alexey; Anselmino, Mauro; Boglione, Mariaelena; Melis, Stefano; Gonzalez, J. O.
2014-10-01
The unpolarised transverse momentum dependent distribution and fragmentation functions (TMDs) are extracted from HERMES and COMPASS experimental measurements of semi- inclusive deep inelastic scattering multiplicities for charged hadron production. A simple factorised functional form of the TMDs is adopted, with a Gaussian dependence on the intrinsic transverse momentum, which turns out to be quite adequate in shape.
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Zhang, Y.; Qian, X.; Allada, K.; Dutta, C.
2014-11-01
An experiment to measure single-spin asymmetries in semi-inclusive production of charged pions in deep-inelastic scattering on a transversely polarized ³He target was performed at Jefferson Lab in the kinematic region of 0.16 ± on He3 and on neutron pretzelosity asymmetries are consistent with zero within experimental uncertainties.
Mukamel, Shaul
Versity of California, IrVine, California 92697, and Department of Physics, UniVersity of California, IrVine, California 92697, and Department of Chemistry, UniVersity of California, Santa Barbara, California 93106 Recei adsorbed on an insulating layer open up inelastic scattering channels for charge transport via
Residual Stresses in Weldments by Neutron Diffraction
Bandara, Arosha
Residual Stresses in Weldments by Neutron Diffraction Shanmukha Rao M, Jon James, Shirley Northover :- The neutron diffraction is determined from Bragg's law. When neutron propagate through crystal sample, Coherent, Incoherent and Absorption Scattering phenomena take place Weld MaterialsPlate materials Stress
The Significance of Disordered Residues in
Poonen, Bjorn
RFs are significant in causing drug resistance in bacteria. 2. Protein interactions with a. common b. MoRF c. NonThe Significance of Disordered Residues in: 1) Bacterial Drug Resistance and 2) SNP Interactions #12;Outline 1. Introduction 2. Bacteria Methods 3. Bacteria Results 4. Disease Association Methods 5
Residual Energy Spectrum of Solar Wind Turbulence
Chen, C H K; Salem, C S; Maruca, B A
2013-01-01
It has long been known that the energy in velocity and magnetic field fluctuations in the solar wind is not in equipartition. In this paper, we present an analysis of 5 years of Wind data at 1 AU to investigate the reason for this. The residual energy (difference between energy in velocity and magnetic field fluctuations) was calculated using both the standard magnetohydrodynamic (MHD) normalization for the magnetic field and a kinetic version, which includes temperature anisotropies and drifts between particle species. It was found that with the kinetic normalization, the fluctuations are closer to equipartition, with a mean normalized residual energy of sigma_r = -0.19 and mean Alfven ratio of r_A = 0.71. The spectrum of residual energy, in the kinetic normalization, was found to be steeper than both the velocity and magnetic field spectra, consistent with some recent MHD turbulence predictions and numerical simulations, having a spectral index close to -1.9. The local properties of residual energy and cros...
Chemical Stabilization of Hanford Tank Residual Waste
Cantrell, Kirk J.; Um, Wooyong; Williams, Benjamin D.; Bowden, Mark E.; Gartman, Brandy N.; Lukens, Wayne W.; Buck, Edgar C.; Mausolf, Edward J.
2014-03-01
Three different chemical treatment methods were tested for their ability to stabilize residual waste from Hanford tank C-202 for reducing contaminant release (Tc, Cr, and U in particular). The three treatment methods tested were lime addition [Ca(OH)2], an in-situ Ceramicrete waste form based on chemically bonded phosphate ceramics, and a ferrous iron/goethite treatment. These approaches rely on formation of insoluble forms of the contaminants of concern (lime addition and ceramicrete) and chemical reduction followed by co-precipitation (ferrous iron/goethite incorporation treatment). The results have demonstrated that release of the three most significant mobile contaminants of concern from tank residual wastes can be dramatically reduced after treatment compared to contact with simulated grout porewater without treatment. For uranium, all three treatments methods reduced the leachable uranium concentrations by well over three orders of magnitude. In the case of uranium and technetium, released concentrations were well below their respective MCLs for the wastes tested. For tank C-202 residual waste, chromium release concentrations were above the MCL but were considerably reduced relative to untreated tank waste. This innovative approach has the potential to revolutionize Hanford’s tank retrieval process, by allowing larger volumes of residual waste to be left in tanks while providing an acceptably low level of risk with respect to contaminant release that is protective of the environment and human health. Such an approach could enable DOE to realize significant cost savings through streamlined retrieval and closure operations.
Data Conversion in Residue Number System
Zilic, Zeljko
;2 Abstract This thesis tackles the problem of data conversion in the Residue Number System (RNS). The RNS has the use of RNS at the applications. In this thesis, we aim at developing efficient schemes for the conversion from the conventional representation to the RNS representation and vice versa. The conventional
Immobilization of Rocky Flats Graphite Fines Residues
Rudisill, T. S.
1998-11-06
The Savannah River Technology Center (SRTC) is developing an immobilization process for graphite fines residues generated during nuclear materials production activities at the Rocky Flats Environmental Technology Site (Rocky Flats). The continued storage of this material has been identified as an item of concern. The residue was generated during the cleaning of graphite casting molds and potentially contains reactive plutonium metal. The average residue composition is 73 wt percent graphite, 15 wt percent calcium fluoride (CaF2), and 12 wt percent plutonium oxide (PuO2). Approximately 950 kilograms of this material are currently stored at Rocky Flats. The strategy of the immobilization process is to microencapsulate the residue by mixing with a sodium borosilicate (NBS) glass frit and heating at nominally 700 degrees C. The resulting waste form would be sent to the Waste Isolation Pilot Plant (WIPP) for disposal. Since the PuO2 concentration in the residue averages 12 wt percent, the immobilization process was required to meet the intent of safeguards termination criteria by limiting plutonium recoverability based on a test developed by Rocky Flats. The test required a plutonium recovery of less than 4 g/kg of waste form when a sample was leached using a nitric acid/CaF2 dissolution flowsheet. Immobilization experiments were performed using simulated graphite fines with cerium oxide (CeO2) as a surrogate for PuO2 and with actual graphite fines residues. Small-scale surrogate experiments demonstrated that a 4:1 frit to residue ratio was adequate to prevent recovery of greater than 4 g/kg of cerium from simulated waste forms. Additional experiments investigated the impact of varying concentrations of CaF2 and the temperature/heating time cycle on the cerium recovery. Optimal processing conditions developed during these experiments were subsequently demonstrated at full-scale with surrogate materials and on a smaller scale using actual graphite fines.In general, the recovery of cerium from the full-scale waste forms was higher than for smaller scale experiments. The presence of CaF2 also caused a dramatic increase in cerium recovery not seen in the small-scale experiments. However, the results from experiments with actual graphite fines were encouraging. A 4:1 frit to residue ratio, a temperature of 700 degrees C, and a 2 hr heating time produced waste forms with plutonium recoveries of 4 plus/minus 1 g/kg. With an increase in the frit to residue ratio, waste forms fabricated at this scale should meet the Rocky Flats product specification. The scale-up of the waste form fabrication process to nominally 3 kg is expected to require a 5:1 to 6:1 frit to residue ratio and maintaining the waste form centerline temperature at 700 degrees C for 2 hr.
Starko-Bowes, Ryan; Newman, Ward; Hu, Huan; Kallos, Themos; Palikaras, George; Fedosejevs, Robert; Pramanik, Sandipan; Jacob, Zubin
2015-01-01
We report on the optical and physical characterization of metallic nanowire (NW) metamaterials fabricated by electrodeposition of ~30 nm diameter gold nanowires in nano-porous anodic aluminum oxide. We observe a uniaxial anisotropic dielectric response for the NW metamaterials that displays both epsilon-near-zero (ENZ) and epsilon-near-pole (ENP) resonances. We show that a fundamental difference in the behavior of NW-metamaterials from metal-dielectric multilayer (ML) metamaterials is the differing directions of the epsilon-near-zero (ENZ) and epsilon-near-pole (ENP) dielectric responses relative to the optical axis of the effective dielectric tensor. In contrast to multilayer metamaterials, nanowire metamaterials exhibit an omnidirectional ENP and an angularly dependent ENZ. Also in contrast to ML metamaterials, the NW metamaterials exhibit ENP and ENZ resonances that are highly absorptive and can be effectively excited from free space. Our fabrication allows a large tunability of the epsilon-near-zero reson...
Determination of the pole and (MS)-bar masses of the top quark from the tt-bar cross section
Baringer, Philip S.; Bean, Alice; Carrasco-Lizarraga, M. A.; Chen, G.; Clutter, Justace Randall; McGivern, Carrie Lynne; Sekaric, Jadranka; Wilson, Graham Wallace; D0 Collaboration; Abazov, V. M.; Abbott, B.; Acharya, B.S.; Adams, M.; Adams, T.
2011-09-20
Physics Letters B 703 (2011) 422–427 D s D V A O S A R G A M E D S M S S T. D G S Y Z M J. D G Z D P. I. D T. W V H R C A 03 doContents lists available at ScienceDirect Physics Letters B www.elsevier.com/locate/physletb etermination of the pole and MS... of integrated luminosity collected by the D0 experiment at the Fermilab Tevatron Collider. The extracted top quark pole mass and MS mass are compared to the current Tevatron average top quark mass obtained from direct measurements. © 2011 Elsevier B.V. The mass...
Deep-inelastic scattering and the operator product expansion in lattice QCD
William Detmold; C. -J. David Lin
2005-12-13
We discuss the determination of deep-inelastic hadron structure in lattice QCD. By using a fictitious heavy quark, direct calculations of the Compton scattering tensor can be performed in Euclidean space that allow the extraction of the moments of structure functions. This overcomes issues of operator mixing and renormalisation that have so far prohibited lattice computations of higher moments. This approach is especially suitable for the study of the twist-two contributions to isovector quark distributions, which is practical with current computing resources. While we focus on the isovector unpolarised distribution, our method is equally applicable to other quark distributions and to generalised parton distributions. By looking at matrix elements such as $$ (where $V^\\mu$ and $A^\
Final-state interactions in inclusive deep-inelastic scattering from the deuteron
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Cosyn, Wim; Melnitchouk, Wally; Sargsian, Misak M.
2014-01-01
We explore the role of final-state interactions (FSI) in inclusive deep-inelastic scattering from the deuteron. Relating the inclusive cross section to the deuteron forward virtual Compton scattering amplitude, a general formula for the FSI contribution is derived in the generalized eikonal approximation, utilizing the diffractive nature of the effective hadron-nucleon interaction. The calculation uses a factorized model with a basis of three resonances with mass W~ 0.6 andmore »Q2 2 increasing in magnitude for lower Q2, but vanishing in the high-Q2 limit due to phase space constraints. The off-shell rescattering contributes at x ~> 0.8 and is taken as an uncertainty on the on-shell result.« less
Precision Measurements of $A_1^n$ in the Deep Inelastic Regime
D. S. Parno; D. Flay; M. Posik; K. Allada; W. Armstrong; T. Averett; F. Benmokhtar; W. Bertozzi; A. Camsonne; M. Canan; G. D. Cates; C. Chen; J. -P. Chen; S. Choi; E. Chudakov; F. Cusanno; M. M. Dalton; W. Deconinck; C. W. de Jager; X. Deng; A. Deur; C. Dutta; L. El Fassi; G. B. Franklin; M. Friend; H. Gao; F. Garibaldi; S. Gilad; R. Gilman; O. Glamazdin; S. Golge; J. Gomez; L. Guo; O. Hansen; D. W. Higinbotham; T. Holmstrom; J. Huang; C. Hyde; H. F. Ibrahim; X. Jiang; G. Jin; J. Katich; A. Kelleher; A. Kolarkar; W. Korsch; G. Kumbartzki; J. J. LeRose; R. Lindgren; N. Liyanage; E. Long; A. Lukhanin; V. Mamyan; D. McNulty; Z. -E. Meziani; R. Michaels; M. Mihovilovi?; B. Moffit; N. Muangma; S. Nanda; A. Narayan; V. Nelyubin; B. Norum; Nuruzzaman; Y. Oh; J. C. Peng; X. Qian; Y. Qiang; A. Rakhman; S. Riordan; A. Saha; B. Sawatzky; M. H. Shabestari; A. Shahinyan; S. Širca; P. Solvignon; R. Subedi; V. Sulkosky; W. A. Tobias; W. Troth; D. Wang; Y. Wang; B. Wojtsekhowski; X. Yan; H. Yao; Y. Ye; Z. Ye; L. Yuan; X. Zhan; Y. Zhang; Y. -W. Zhang; B. Zhao; X. Zheng
2014-12-14
We have performed precision measurements of the double-spin virtual-photon asymmetry $A_1$ on the neutron in the deep inelastic scattering regime, using an open-geometry, large-acceptance spectrometer. Our data cover a wide kinematic range $0.277 \\leq x \\leq 0.548$ at an average $Q^2$ value of 3.078~(GeV/c)$^2$, doubling the available high-precision neutron data in this $x$ range. We have combined our results with world data on proton targets to extract the ratio of polarized-to-unpolarized parton distribution functions for up quarks and for down quarks in the same kinematic range. Our data are consistent with a previous observation of an $A_1^n$ zero crossing near $x=0.5$. We find no evidence of a transition to a positive slope in $(\\Delta d + \\Delta \\bar{d})/(d + \\bar{d})$ up to $x=0.548$.
Cooling process for inelastic Boltzmann equations for hard spheres, Part I: The Cauchy problem
Stéphane Mischler; Clément Mouhot; Mariano Rodriguez Ricard
2006-07-21
We develop the Cauchy theory of the spatially homogeneous inelastic Boltzmann equation for hard spheres, for a general form of collision rate which includes in particular variable restitution coefficients depending on the kinetic energy and the relative velocity as well as the sticky particles model. We prove (local in time) non-concentration estimates in Orlicz spaces, from which we deduce weak stability and existence theorem. Strong stability together with uniqueness and instantaneous appearance of exponential moments are proved under additional smoothness assumption on the initial datum, for a restricted class of collision rates. Concerning the long-time behaviour, we give conditions for the cooling process to occur or not in finite time.
Power Corrections to Fragmentation Functions in Non-Singlet Deep Inelastic Scattering
M. Dasgupta; G. E. Smye; B. R. Webber
1998-03-18
We investigate the power-suppressed corrections to the fragmentation functions of the current jet in non-singlet deep inelastic lepton-hadron scattering. The current jet is defined by selecting final-state particles in the current hemisphere in the Breit frame of reference. Our method is based on an analysis of one-loop Feynman graphs containing a massive gluon, which is equivalent to the evaluation of leading infrared renormalon contributions. We find that the leading corrections are proportional to $1/Q^2$, as in $e^+e^-$ annihilation, but their functional forms are different. We give quantitative estimates based on the hypothesis of universal low-energy behaviour of the strong coupling.
Ryo Kawahara; Hiizu Nakanishi
2003-10-29
The free cooling process in the inelastic hard sphere system is studied by analysing the data from large scale molecular dynamics simulations on a three dimensional system. The initial energy decay, the velocity distribution function, and the velocity correlation functions are calculated to be compared with theoretical predictions. The energy decay rate in the homogeneous cooling state is slightly but distinctively smaller than that expected from the independent collision assumption. The form of the one particle velocity distribution is found not to be stationary. These contradict to the predictions of the kinetic theory based on the Enskog-Boltzmann equation and suggest that the velocity correlation is already important in the early stage of homogeneous cooling state. The energy decay rate is analysed in terms of the velocity correlation.
Longitudinal polarization of hyperon and anti-hyperon in semi-inclusive deep-inelastic scattering
Shan-shan Zhou; Ye Chen; Zuo-tang Liang; Qing-hua Xu
2009-02-11
We make a detailed study of the longitudinal polarization of hyperons and anti-hyperons in semi-inclusive deep-inelastic lepton-nucleon scattering. We present the numerical results for spin transfer in quark fragmentation processes, analyze the possible origins for a difference between the polarization for hyperon and that for the corresponding anti-hyperon. We present the results obtained in the case that there is no asymmetry between sea and anti-sea distribution in nucleon as well as those obtained when such an asymmetry is taken into account. We compare the results with the available data such as those from COMPASS and make predictions for future experiments including those at even higher energies such as at eRHIC.
Longitudinal polarization of hyperon and anti-hyperon in semi-inclusive deep-inelastic scattering
Zhou, Shan-shan; Liang, Zuo-tang; Xu, Qing-hua
2009-01-01
We make a detailed study of the longitudinal polarization of hyperons and anti-hyperons in semi-inclusive deep-inelastic lepton-nucleon scattering. We present the numerical results for spin transfer in quark fragmentation processes, analyze the possible origins for a difference between the polarization for hyperon and that for the corresponding anti-hyperon. We present the results obtained in the case that there is no asymmetry between sea and anti-sea distribution in nucleon as well as those obtained when such an asymmetry is taken into account. We compare the results with the available data such as those from COMPASS and make predictions for future experiments including those at even higher energies such as at eRHIC.
Resummation for Polarized Semi-Inclusive Deep-Inelastic Scattering at Small Transverse Momentum
Koike, Y; Vogelsang, W; Koike, Yuji; Nagashima, Junji; Vogelsang, Werner
2006-01-01
We study the transverse-momentum distribution of hadrons produced in semi-inclusive deep-inelastic scattering (SIDIS). We consider cross sections for various combinations of polarizations of the initial lepton and nucleon or the produced hadron, for which we perform the resummation of large double-logarithmic perturbative corrections arising at small transverse momentum. We present phenomenological results for the processes $lp\\to l\\pi X$ with longitudinally polarized leptons and protons. We discuss the impact of the perturbative resummation and of estimated non-perturbative contributions on the corresponding cross sections and their spin asymmetry. Our results should be relevant for ongoing studies in the COMPASS experiment at CERN, and for future experiments at the proposed eRHIC collider at BNL.
Resummation for Polarized Semi-Inclusive Deep-Inelastic Scattering at Small Transverse Momentum
Yuji Koike; Junji Nagashima; Werner Vogelsang
2006-05-17
We study the transverse-momentum distribution of hadrons produced in semi-inclusive deep-inelastic scattering (SIDIS). We consider cross sections for various combinations of polarizations of the initial lepton and nucleon or the produced hadron, for which we perform the resummation of large double-logarithmic perturbative corrections arising at small transverse momentum. We present phenomenological results for the processes $lp\\to l\\pi X$ with longitudinally polarized leptons and protons. We discuss the impact of the perturbative resummation and of estimated non-perturbative contributions on the corresponding cross sections and their spin asymmetry. Our results should be relevant for ongoing studies in the COMPASS experiment at CERN, and for future experiments at the proposed eRHIC collider at BNL.
Leading neutron energy and pT distributions in deep inelastic scattering and photoproduction at HERA
ZEUS Collaboration; S. Chekanov
2007-03-09
The production of energetic neutrons in $ep$ collisions has been studied with the ZEUS detector at HERA. The neutron energy and $p_T^2$ distributions were measured with a forward neutron calorimeter and tracker in a $40 \\pb^{-1}$ sample of inclusive deep inelastic scattering (DIS) data and a $6 \\pb^{-1}$ sample of photoproduction data. The neutron yield in photoproduction is suppressed relative to DIS for the lower neutron energies and the neutrons have a steeper $p_T^2$ distribution, consistent with the expectation from absorption models. The distributions are compared to HERA measurements of leading protons. The neutron energy and transverse-momentum distributions in DIS are compared to Monte Carlo simulations and to the predictions of particle exchange models. Models of pion exchange incorporating absorption and additional secondary meson exchanges give a good description of the data.
6 GeV Parity Violating Deep Inelastic Scattering at Jefferson Laboratory
Subedi, Ramesh R.; Deng Xiaoyan; Wang Diancheng; Zheng Xiaochao; Michaels, Robert; Pan Kai; Reimer, Paul E.
2011-10-24
The 6 GeV Parity Violating Deep Inelastic Scattering (PVDIS) experiment has measured a 10{sup -4} level asymmetry through polarized electron scattering off a liquid deuterium target with a beam energy of 6 GeV. This experiment has a goal of measuring a combination of the product of the weak neutral couplings of the electron and the quark with a factor of six improvement in precision over world data. Precise data for the couplings are essential to search for physics beyond the Standard Model. The experiment took place in Hall A at Thomas Jefferson National Accelerator Facility (Jefferson Laboratory) and data collection was completed in the end of 2009. A highly specialized counting data acquisition system with an inherent particle identification was developed and utilized. We have taken data at two Q{sup 2} points in order to possibly address the hadronic correction due to higher twist effects. An overview of the experiment will be presented.
Ooi, Kelvin J A; Hsieh, Chang Yu; Tan, Dawn T H; Ang, Lay Kee
2015-01-01
Inelastic electron tunneling provides a low-energy pathway for the excitation of surface plasmons and light emission. We theoretically investigate tunnel junctions based on metals and graphene. We show that graphene is potentially a highly efficient material for tunneling excitation of plasmons because of its narrow plasmon linewidths, strong emission, and large tunability in the midinfrared wavelength regime. Compared to gold and silver, the enhancement can be up to 10 times for similar wavelengths and up to 5 orders at their respective plasmon operating wavelengths. Tunneling excitation of graphene plasmons promises an efficient technology for on-chip electrical generation and manipulation of plasmons for graphene-based optoelectronics and nanophotonic integrated circuits.
The new method of interference contributions accounting for inelastic scattering diagrams
Sharph, I V; Deliyergiyev, M A; Merkotan, K K; Chudak, N O; Ptashynskyy, D A; Sokhrannyi, G O; Tykhonov, A V; Volkotrub, Yu V; Shabatura, U V; Rusov, V D
2015-01-01
A new method of interference contributions accounting is proposed. This method makes it possible to solve the problem of accounting the particles identity in the final state of the scattering process. This problem requires the calculation of a huge number of multidimensional integrals that express the scattering cross-section through the square modulus of the scattering amplitude. Our method is based on the physical features of the scattering amplitude. We show that the set of all interference contributions may be divided into subsets with the similar contributions. Therefore one does not need to calculate each of them separately. Within this approach it is possible to describe inelastic scattering processes with large number of secondary particles. The method was also verified within the $\\phi^3$ model using the Laplace method for the calculation of multidimensional integrals in order to compute the inclusive rapidity cross-sections. A qualitative description of experimental data was obtained. An important r...
SPEC application for achieving inelastic X-ray scattering experiment in the SSRF
Lan, Xuying; Liang, Dongxu; Yan, Shuai; Mao, Chengwen; Li, Aiguo; Wang, Jie
2015-01-01
In order to carry out inelastic X-ray scattering (IXS) experiment at BL15U1 beamline of Shanghai Synchrotron Radiation Facility (SSRF), the data acquisition and control system based on SPEC software has been developed. The IXS experimental method needs linkage control of monochromator, silicon drift detector (SDD) and ionization chamber on continuous segment-scan mode with variable step size, and gains the data of energy, spectrum and light intensity synchronously. A method is presented for achieving this function which was not realized only by using SSCAN of Experimental Physics and Industrial Control System (EPICS). This paper shows work details including control system description, SPEC configurations for EPICS devices, macro definitions and applications in the BL15U1. An IXS experiment was executed by using the SPEC control system, its results prove that the method is feasible to perform the experiment.
New primordial $^4\\text{He}$ constraints on inelastic macro dark matter
Jacobs, David M; Mafune, Mpho; Manikumar, Samyukta; Weltman, Amanda
2015-01-01
At present, the best model for the evolution of the cosmos requires that dark matter makes up approximately 25% of the energy content of the Universe. Most approaches to explain the microscopic nature of dark matter, to date, have assumed its composition to be of intrinsically weakly-interacting particles; however, this need not be the case to have consistency with all extant observations. Given decades of no conclusive evidence to support any dark matter candidate so far, there is strong motivation to consider alternatives to the standard particle scenario. One such example is macro dark matter, a class of candidates that could interact quite strongly with the particles of the Standard Model, have large masses and physical sizes, yet behave as dark matter. Here we reconsider the effect of inelastically interacting macro dark matter on the abundance of primordially produced $^4\\text{He}$, revising older constraints by both revisiting the phenomenology and taking into account recent improved measurements of th...
Devaux, Fabrice
2015-01-01
We report an application of the tri-dimensional pseudo-spectral time domain algorithm, that solves with accuracy the nonlinear Maxwell's equations, to predict second harmonic generation in lithium niobate ridge-type waveguides with high index contrast. Characteristics of the nonlinear process such as conversion efficiency as well as impact of the multimode character of the waveguide are investigated as a function of the waveguide geometry in uniformly and periodically poled medium.
7 dB quadrature squeezing at 860 nm with periodically-poled KTiOPO4
Shigenari Suzuki; Hidehiro Yonezawa; Fumihiko Kannari; Masahide Sasaki; Akira Furusawa
2006-08-15
We observed -7.2 dB quadrature squeezing at 860 nm by using a sub-threshold continuous-wave pumped optical parametric oscillator with a periodically-poled KTiOPO4 crystal as a nonlinear optical medium. The squeezing level was measured with the phase of homodyne detection locked at the quadrature. The blue light induced infrared absorption was not observed in the experiment.
Testing regression models with residuals as data by Xia Hua.
Hua, Xia, Ph. D. Massachusetts Institute of Technology
2010-01-01
Abstract In polynomial regression ... . In this thesis, I developed a residual based test, the turning point test for residuals, which tests the hypothesis that the kth order polynomial regression holds with ... while the ...
Computer aided analysis for residual stress measurement using ultrasonic techniques
Kypa, Jagan Mohan
1999-01-01
Critically refracted longitudinal (Lcr) waves have been investigated with a computerized data acquisition and analysis technique to evaluate residual stresses present in a residual stress reference standard. This measurement ...
In-situ method for treating residual sodium
Sherman, Steven R. (Idaho Falls, ID); Henslee, S. Paul (Idaho Falls, ID)
2005-07-19
A unique process for deactivating residual sodium in Liquid Metal Fast Breeder Reactor (LMFBR) systems which uses humidified (but not saturated) carbon dioxide at ambient temperature and pressure to convert residual sodium into solid sodium bicarbonate.
FIXED PRICE RESIDUAL FUNDS POLICY Policy dated March 29, 1999
Weston, Ken
FIXED PRICE RESIDUAL FUNDS POLICY Policy dated March 29, 1999 After completion of all deliverables in this process. May 1, 1999 Amendment to Policy · The first $75,000 of the residual balance will be transferred
1-D Transforms for the Motion Compensation Residual
Kamisli, Fatih
Transforms used in image coding are also commonly used to compress prediction residuals in video coding. Prediction residuals have different spatial characteristics from images, and it is useful to develop transforms that ...
In-Situ Method for Treating Residual Sodium
Sherman, Steven R.; Henslee, S. Paul
2005-07-19
A unique process for deactivating residual sodium in Liquid Metal Fast Breeder Reactor (LMFBR) systems which uses humidified (but not saturated) carbon dioxide at ambient temperature and pressure to convert residual sodium into solid sodium bicarbonate.
Thin layer chromatography residue applicator sampler
Nunes, Peter J. (Danville, CA); Kelly, Fredrick R. (Modesto, CA); Haas, Jeffrey S. (San Ramon, CA); Andresen, Brian D. (Livermore, CA)
2007-07-24
A thin layer chromatograph residue applicator sampler. The residue applicator sampler provides for rapid analysis of samples containing high explosives, chemical warfare, and other analyses of interest under field conditions. This satisfied the need for a field-deployable, small, hand-held, all-in-one device for efficient sampling, sample dissolution, and sample application to an analytical technique. The residue applicator sampler includes a sampling sponge that is resistant to most chemicals and is fastened via a plastic handle in a hermetically sealed tube containing a known amount of solvent. Upon use, the wetted sponge is removed from the sealed tube and used as a swiping device across an environmental sample. The sponge is then replaced in the hermetically sealed tube where the sample remains contained and dissolved in the solvent. A small pipette tip is removably contained in the hermetically sealed tube. The sponge is removed and placed into the pipette tip where a squeezing-out of the dissolved sample from the sponge into the pipette tip results in a droplet captured in a vial for later instrumental analysis, or applied directly to a thin layer chromatography plate for immediate analysis.
Principle of Least Squares Regression Equations Residuals Correlation and Regression
Watkins, Joseph C.
Principle of Least Squares Regression Equations Residuals Topic 3 Correlation and Regression Linear Regression I 1 / 15 #12;Principle of Least Squares Regression Equations Residuals Outline Principle of Least Squares Regression Equations Residuals 2 / 15 #12;Principle of Least Squares Regression Equations
RESIDUAL STRESS EFFECTS IN FRACTURE OF COMPOSITES AND ADHESIVES
Nairn, John A.
RESIDUAL STRESS EFFECTS IN FRACTURE OF COMPOSITES AND ADHESIVES JOHN A. NAIRN ABSTRACT Because by including residual stresses in fracture mechanics models of failure. This chapter gives general results examples of including residual stresses in fracture mechanics interpretation of experimental results
Chen, Krishichayan X.; Lui, Y. -W; Button, J.; Youngblood, David H.
2010-01-01
Elastic and inelastic scattering of 240-MeV (6)Li particles from (40)Ca and (48)Ca were measured with the multipole-dipole-multipole spectrometer from 4 degrees <= theta(c.m.) <= 40 degrees. Optical potential parameters ...
Zhao, Y. X.
We report the first measurement of target single spin asymmetries of charged kaons produced in semi-inclusive deep inelastic scattering of electrons off a transversely polarized [superscript 3]He target. Both the Collins ...
Zhang, Y.; Qian, X.; Allada, K.; Dutta, C.
2014-11-01
An experiment to measure single-spin asymmetries in semi-inclusive production of charged pions in deep-inelastic scattering on a transversely polarized ³He target was performed at Jefferson Lab in the kinematic region of 0.16 < x < 0.35 and 1.4 < Q² < 2.7 GeV². Our results show that both ?^{±} on He^{3} and on neutron pretzelosity asymmetries are consistent with zero within experimental uncertainties.
Boes, Andreas, E-mail: s3363819@student.rmit.edu.au; Steigerwald, Hendrik; Sivan, Vijay; Mitchell, Arnan [School of Electrical and Computer Engineering, RMIT University, Melbourne, Victoria 3001 (Australia); ARC Center for Ultra-high Bandwidth Devices for Optical Systems (CUDOS), RMIT University, Melbourne, Victoria 3001 (Australia); Yudistira, Didit [School of Electrical and Computer Engineering, RMIT University, Melbourne, Victoria 3001 (Australia); Wade, Scott [Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122 (Australia); Mailis, Sakellaris [Optoelectronics Research Centre, University of Southampton, Highfield, Southampton SO17 1BJ (United Kingdom); Soergel, Elisabeth [Institute of Physics, University of Bonn, Wegelerstr. 8, 53115 Bonn (Germany)
2014-09-01
We report the realization of high-resolution bulk domains achieved using a shallow, structured, domain inverted surface template obtained by UV laser-induced poling inhibition in MgO-doped lithium niobate. The quality of the obtained bulk domains is compared to those of the template and their application for second harmonic generation is demonstrated. The present method enables domain structures with a period length as small as 3??m to be achieved. Furthermore, we propose a potential physical mechanism that leads to the transformation of the surface template into bulk domains.
Thierry Daudé; Francois Nicoleau
2015-06-12
We study inverse scattering problems at a fixed energy for radial Schr\\"{o}dinger operators on $\\R^n$, $n \\geq 2$. First, we consider the class $\\mathcal{A}$ of potentials $q(r)$ which can be extended analytically in $\\Re z \\geq 0$ such that $\\mid q(z)\\mid \\leq C \\ (1+ \\mid z \\mid )^{-\\rho}$, $\\rho \\textgreater{} \\frac{3}{2}$. If $q$ and $\\tilde{q}$ are two such potentials and if the corresponding phase shifts $\\delta\\_l$ and $\\tilde{\\delta}\\_l$ are super-exponentially close, then $q=\\tilde{q}$. Secondly, we study the class of potentials $q(r)$ which can be split into $q(r)=q\\_1(r) + q\\_2(r)$ such that $q\\_1(r)$ has compact support and $q\\_2 (r) \\in \\mathcal{A}$. If $q$ and $\\tilde{q}$ are two such potentials, we show that for any fixed $a\\textgreater{}0$, ${\\ds{\\delta\\_l - \\tilde{\\delta}\\_l \\ = \\ o \\left( \\frac{1}{l^{n-3}} \\ \\left( {\\frac{ae}{2l}}\\right)^{2l}\\right)}}$ when $l \\rightarrow +\\infty$ if and only if $q(r)=\\tilde{q}(r)$ for almost all $r \\geq a$. The proofs are close in spirit with the celebrated Borg-Marchenko uniqueness theorem, and rely heavily on the localization of the Regge poles that could be defined as the resonances in the complexified angular momentum plane. We show that for a non-zero super-exponentially decreasing potential, the number of Regge poles is always infinite and moreover, the Regge poles are not contained in any vertical strip in the right-half plane. For potentials with compact support, we are able to give explicitly their asymptotics. At last, for potentials which can be extended analytically in $\\Re z \\geq 0$ with $\\mid q(z)\\mid \\leq C \\ (1+ \\mid z \\mid )^{-\\rho}$, $\\rho \\textgreater{}1$ , we show that the Regge poles are confined in a vertical strip in the complex plane.
Genta Masada; Tsuyoshi Suzudo; Yasuhiro Satoh; Hideki Ishizuki; Takunori Taira; Akira Furusawa
2009-12-21
We report on effective generation of continuous-wave squeezed light and second harmonics with a periodically poled MgO:LiNbO$_{\\mathrm{3}}$ (PPMgLN) crystal which enables us to utilize the large nonlinear optical coefficient $d_{\\mathrm{33}}$. We achieved the squeezing level of $-7.60 \\pm 0.15$dB at 860 nm by utilizing a subthreshol optical parametric oscillator with a PPMgLN crystal. We also generated 400 mW of second harmonics at 430 nm from 570 mW of fundamental waves with 70% of conversion efficiency by using a PPMgLN crystal inside an external cavity.
Generation of a squeezed vacuum resonant on Rubidium D_1 line with periodically-poled KTiOPO_4
Takahito Tanimura; Daisuke Akamatsu; Yoshihiko Yokoi; Akira Furusawa; Mikio Kozuma
2006-03-23
We report generation of a continuous-wave squeezed vacuum resonant on the Rb D_1 line (795 nm) using periodically poled KTiOPO_4 (PPKTP) crystals. With a frequency doubler and an optical parametric oscillator based on PPKTP crystals, we observed a squeezing level of -2.75 +- 0.14 dB and an anti-squeezing level of +7.00 +- 0.13 dB. This system could be utilized for demonstrating storage and retrieval of the squeezed vacuum, which is important for the ultra-precise measurement of atomic spins as well as quantum information processing.
Evaluation of agricultural residues for paper manufacture
Alcaide, L.J.; Baldovin, F.L.; Herranz, J.L.F. (Univ. of Cordoba (Spain))
1993-03-01
Five agricultural residues-olive tree fellings, wheat straw, sunflower stalks, vine shoots, and cotton stalks-were evaluated for use as raw materials for paper manufacture. The untreated raw materials and their pulps were tested for hot-water solubles, 1%-NaOH solubles, alcohol-benzene extractables, ash, holocellulose, lignin, [alpha]-cellulose, and pentosans. Handsheets were tested for breaking length, stretch, burst index, and tear index. The results showed wheat straw to be the most promising material. Vine shoots showed the least promise.
Precision Measurements of $A_1^n$ in the Deep Inelastic Regime
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Parno, Diana; Flay, David; Posik, Matthew; Allada, Kalyan; Armstrong, Whitney; Averett, Todd; Benmokhtar, Fatiha; Bertozzi, William; Camsonne, Alexandre; Canan, Mustafa; et al
2015-05-01
We have performed precision measurements of the double-spin virtual photon-neutron asymmetry An1 in the deep inelastic scattering regime, using an open-geometry, large-acceptance spectrometer. Our data cover a wide kinematic range 0.277?x?0.548 at an average Q2 value of 3.078~(GeV/c)2, doubling the available high-precision neutron data in this x range. We have combined our results with world data on proton targets to extract the ratio of polarized-to-unpolarized parton distribution functions for up quarks and for down quarks in the same kinematic range. Our data corroborate a previous observation of an An1 zero crossing near x=0.5. We find no evidence of a transitionmore »to a positive slope in (?d+?d¯)/(d+d¯) up to x=0.548; our extraction of (?d+?d¯)/(d+d¯) disfavors leading-order perturbative quantum chromodynamics without orbital angular momentum.« less
Discrimination of gamma rays due to inelastic neutron scattering in AGATA
A. Ataç; A. Ka?ka?; S. Akkoyun; M. ?enyi?it; T. Hüyük; S. O. Kara; J. Nyberg
2009-06-10
Possibilities of discriminating neutrons and gamma rays in the AGATA gamma-ray tracking spectrometer have been investigated with the aim of reducing the background due to inelastic scattering of neutrons in the high-purity germanium crystals. This background may become a serious problem especially in experiments with neutron-rich radioactive ion beams. Simulations using the Geant4 toolkit and a tracking program based on the forward tracking algorithm were carried out by emitting neutrons and gamma rays from the center of AGATA. Three different methods were developed and tested in order to find 'fingerprints' of the neutron interaction points in the detectors. In a simulation with simultaneous emission of six neutrons with energies in the range 1-5 MeV and ten gamma rays with energies between 150 and 1450 keV, the peak-to-background ratio at a gamma-ray energy of 1.0 MeV was improved by a factor of 2.4 after neutron rejection with a reduction of the photopeak efficiency at 1.0 MeV of only a factor of 1.25.
Elastic and inelastic neutron scattering cross sections for fission reactor applications
Hicks, S. F.; Combs, B.; Downes, L.; Girgis, J.; Kersting, L. J.; Lueck, C. J.; McDonough, P. J.; Schniederjan, J.; Sidwell, L.; Sigillito, A. J. [Department of Physics, University of Dallas, Irving TX 75019 (United States); Chakraborty, A.; Crider, B. P.; Kumar, A.; McEllistrem, M. T.; Peters, E. E.; Prados-Estevz, F. M. [Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506 (United States); Vanhoy, J. R.; Watts, D. [Department of Physics, United States Naval Academy, Annapolis MD 21402 (United States); Yates, S. W. [Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506 (United States) and Department of Chemistry, University of Kentucky, Lexington, KY 40506 (United States)
2013-04-19
Nuclear data important for the design and development of the next generation of light-water reactors and future fast reactors include neutron elastic and inelastic scattering cross sections on important structural materials, such as Fe, and on coolant materials, such as Na. These reaction probabilities are needed since neutron reactions impact fuel performance during irradiations and the overall efficiency of reactors. While neutron scattering cross sections from these materials are available for certain incident neutron energies, the fast neutron region, particularly above 2 MeV, has large gaps for which no measurements exist, or the existing uncertainties are large. Measurements have been made at the University of Kentucky Accelerator Laboratory to measure neutron scattering cross sections on both Fe and Na in the region where these gaps occur and to reduce the uncertainties on scattering from the ground state and first excited state of these nuclei. Results from measurements on Fe at incident neutron energies between 2 and 4 MeV will be presented and comparisons will be made to model calculations available from data evaluators.
Diffractive deep inelastic scattering in an AdS/CFT inspired model: A phenomenological study
M. A. Betemps; V. P. Goncalves; J. T. de Santana Amaral
2010-04-29
The analytical treatment of the nonperturbative QCD dynamics is one of main open questions of the strong interactions. Currently, it is only possible to get some qualitative information about this regime considering other QCD-like theories, as for example the N=4 super Yang-Mills (SYM), where one can perform calculations in the nonperturbative limit of large 't Hooft coupling using the Anti-de Sitter space/Conformal field theory (AdS/CFT). Recently, the high energy scattering amplitude was calculated in the AdS/CFT approach, applied to deep inelastic scattering (DIS) and confronted with the $F_2$ HERA data. In this work we extend the nonperturbative AdS/CFT inspired model for diffractive processes and compare its predictions with a perturbative approach based on the Balitsky - Kovchegov (BK) equation. We demonstrate that the AdS/CFT inspired model is not able to describe the current $F_2^{D(3)}$ HERA data and predicts a similar behavior to that from BK equation in the range $10^{-7} \\lesssim x_{IP} \\lesssim 10^{-4}$. At smaller values of $x_{IP}$ the diffractive structure function is predicted to be energy independent.
The new method of interference contributions accounting for inelastic scattering diagrams
I. V. Sharph; O. S. Potiienko; M. A. Deliyergiyev; K. K. Merkotan; N. O. Chudak; D. A. Ptashynskyy; G. O. Sokhrannyi; A. V. Tykhonov; Yu. V. Volkotrub; U. V. Shabatura; V. D. Rusov
2015-09-14
A new method of interference contributions accounting is proposed. This method makes it possible to solve the problem of accounting the particles identity in the final state of the scattering process. This problem requires the calculation of a huge number of multidimensional integrals that express the scattering cross-section through the square modulus of the scattering amplitude. Our method is based on the physical features of the scattering amplitude. We show that the set of all interference contributions may be divided into subsets with the similar contributions. Therefore one does not need to calculate each of them separately. Within this approach it is possible to describe inelastic scattering processes with large number of secondary particles. The method was also verified within the $\\phi^3$ model using the Laplace method for the calculation of multidimensional integrals in order to compute the inclusive rapidity cross-sections. A qualitative description of experimental data was obtained. An important result of this work is the explanation of peaks behavior in the inclusive rapidity distributions and their possible interference origin.
Structure of water in mesoporous organosilica by calorimetry and inelastic neutron scattering
Levy, Esthy [Institute of Nanotechnology Bar-Ilan University, Ramat-Gan, Israel; Kolesnikov, Alexander I [ORNL; Li, Jichen [University of Manchester, UK; Mastai, Yitzhak [Institute of Nanotechnology Bar-Ilan University, Ramat-Gan, Israel
2009-01-01
In this paper, we describe the preparation of mesoporous organosilica samples with hydrophilic or hydrophobic organic functionality inside the silica channel. We synthesized mesoporous organosilica of identical pore sizes based on two different organic surface functionality namely hydrophobic (based on octyltriethoxysilane OTES) and hydrophilic (3-aminopropyltriethoxysilane ATES) and MCM-41 was used as a reference system. The structure of water/ice in those porous silica samples have been investigated over a range temperatures by differential scanning calorimetry (DSC) and inelastic neutron scattering (INS). INS study revealed that water confined in hydrophobic mesoporous organosilica shows vibrational behavior strongly different than bulk water. It consists of two states: water with strong and weak hydrogen bonds (with ratio 1:2.65, respectively), compared to ice-Ih. The corresponding O-O distances in these water states are 2.67 and 2.87 ?, which strongly differ compared to ice-Ih (2.76 ?). INS spectra for water in hydrophilic mesoporous organosilica ATES show behavior similar to bulk water, but with greater degree of disorder.
CT14QED PDFs from Isolated Photon Production in Deep Inelastic Scattering
Schmidt, Carl; Stump, Daniel; Yuan, C -P
2015-01-01
We describe the implementation of Quantum Electrodynamic (QED) evolution at Leading Order (LO) along with Quantum Chromodynamic (QCD) evolution at Next-to-Leading Order (NLO) in the CTEQ-TEA Global analysis package. The photon Parton Distribution Function (PDF) is described by a two-parameter ansatz, coming from radiation off the valence quarks, and based on the CT14 NLO PDFs. Setting the two parameters equal, allows us to completely specify the photon PDF in terms of the momentum fraction carried by the photon, $p_0^\\gamma$, at the initial scale $Q_0=1.295$ GeV. We obtain constraints on the photon PDF by comparing with ZEUS data~\\cite{Chekanov:2009dq} on the production of isolated photons in deep inelastic scattering, $ep\\rightarrow e\\gamma+X$. For this comparison we present a new perturbative calculation of the process that consistently combines the photon-initiated contribution with the quark-initiated contribution. Comparison with the data allows us to put a constraint at the 90% confidence level of $p_0^...
CT14QED PDFs from Isolated Photon Production in Deep Inelastic Scattering
Carl Schmidt; Jon Pumplin; Daniel Stump; C. -P. Yuan
2015-09-09
We describe the implementation of Quantum Electrodynamic (QED) evolution at Leading Order (LO) along with Quantum Chromodynamic (QCD) evolution at Next-to-Leading Order (NLO) in the CTEQ-TEA Global analysis package. The photon Parton Distribution Function (PDF) is described by a two-parameter ansatz, coming from radiation off the valence quarks, and based on the CT14 NLO PDFs. Setting the two parameters equal, allows us to completely specify the photon PDF in terms of the momentum fraction carried by the photon, $p_0^\\gamma$, at the initial scale $Q_0=1.295$ GeV. We obtain constraints on the photon PDF by comparing with ZEUS data~\\cite{Chekanov:2009dq} on the production of isolated photons in deep inelastic scattering, $ep\\rightarrow e\\gamma+X$. For this comparison we present a new perturbative calculation of the process that consistently combines the photon-initiated contribution with the quark-initiated contribution. Comparison with the data allows us to put a constraint at the 90% confidence level of $p_0^\\gamma\\lesssim0.14\\%$ for the photon PDF at the initial scale of $Q_0=1.295$ GeV in the one-parameter radiative ansatz. The resulting CT14QED PDFs will be made available to the public.
Quantum Residual Correlation: Interpreting through State Merging
Indranil Chakrabarty; Abhishek Deshpande; Sourav Chatterjee
2015-03-03
In this brief report we revisit the concept of "quantum dissension", which was introduced as a natural extension of quantum discord for three qubit system. Here we bring in new expression for quantum dissensions and more interestingly we name one such expression as \\textit{residual correlation}. The basic objective behind the introduction of such a quantity is to capture the extra amount of correlation generated by doing measurement in a correlated system from a situation where we do not bring in a correlated system in the measurement process. Apart from this we also present an operational interpretation of this correlation in context of state merging. Remarkably, we find that for three qubit system if one discards relevant prior information, the change in the cost of state merging ( merging the quantum information of two parties into one) is captured by the \\textit{residual correlation}. In addition to that we found that this quantity can be negative for mixed states. This indeed opens up a new dimension in the tripartite scenario where we can observe situations where there is a decrease in the cost of state merging on discarding relevant prior information. We claim that this result establishes a re conceptualization of information processing tasks in tripartite situations where we can use suitable measurement and states to bring down the cost of the protocol.
Morphing of Geometric Composites via Residual Swelling
Matteo Pezzulla; Steven A. Shillig; Paola Nardinocchi; Douglas P. Holmes
2015-05-30
Understanding and controlling the shape of thin, soft objects has been the focus of significant research efforts among physicists, biologists, and engineers in the last decade. These studies aim to utilize advanced materials in novel, adaptive ways such as fabricating smart actuators or mimicking living tissues. Here, we present the controlled growth--like morphing of 2D sheets into 3D shapes by preparing geometric composite structures that deform by residual swelling. The morphing of these geometric composites is dictated by both swelling and geometry, with diffusion controlling the swelling-induced actuation, and geometric confinement dictating the structure's deformed shape. Building on a simple mechanical analog, we present an analytical model that quantitatively describes how the Gaussian and mean curvatures of a thin disk are affected by the interplay among geometry, mechanics, and swelling. This model is in excellent agreement with our experiments and numerics. We show that the dynamics of residual swelling is dictated by a competition between two characteristic diffusive length scales governed by geometry. Our results provide the first 2D analog of Timoshenko's classical formula for the thermal bending of bimetallic beams - our generalization explains how the Gaussian curvature of a 2D geometric composite is affected by geometry and elasticity. The understanding conferred by these results suggests that the controlled shaping of geometric composites may provide a simple complement to traditional manufacturing techniques.
S. Böser; C. Bohm; F. Descamps; J. Fischer; A. Hallgren; R. Heller; S. Hundertmark; K. Krieger; R. Nahnhauer; M. Pohl; P. B. Price; K. -H. Sulanke; D. Tosi; J. Vandenbroucke
2007-08-15
Astrophysical neutrinos in the EeV range (particularly those generated by the interaction of cosmic rays with the cosmic microwave background) promise to be a valuable tool to study astrophysics and particle physics at the highest energies. Much could be learned from temporal, spectral, and angular distributions of ~100 events, which could be collected by a detector with ~100 km^3 effective volume in a few years. Scaling the optical Cherenkov technique to this scale is prohibitive. However, using the thick ice sheet available at the South Pole, the radio and acoustic techniques promise to provide sufficient sensitivity with sparse instrumentation. The best strategy may be a hybrid approach combining all three techniques. A new array of acoustic transmitters and sensors, the South Pole Acoustic Test Setup, was installed in three IceCube holes in January 2007. The purpose of SPATS is to measure the attenuation length, background noise, and sound speed for 10-100 kHz acoustic waves. Favorable results would pave the way for a large hybrid array. SPATS is the first array to study the possibility of acoustic neutrino detection in ice, the medium expected to be best for the purpose. First results from SPATS are presented.
Memory effect in 001 poled 0.92Pb,,Zn1/3Nb2/3...O30.08PbTiO3 single crystals
Cao, Wenwu
Memory effect in 001 poled 0.92Pb,,Zn1/3Nb2/3...O3Â0.08PbTiO3 single crystals Mingrong Shen and pyroelectric measurements in 001 poled rhombohedral phase 0.92Pb Zn1/3Nb2/3 O3Â0.08PbTiO3 single crystals from room temperature to 250 Â°C. An interesting poling history dependence has been revealed from
Cao, Wenwu
Â0.07PbTiO3 single crystal poled along 011 Rui Zhang Department of Physics, Harbin Institute of Technology, and piezoelectric coefficients of rhomboheral phase 0.93Pb Zn1/3Nb2/3 O3Â0.07PbTiO3 single crystal poled along 011 boundary MPB exhibit superior electromechani- cal properties at room temperature when being poled along
Bioassays of weathered residues of several organic phosphorus insecticides
Hightower, Billie Gene
1959-01-01
at high temperatures on the residual toxicities of Gut hi on, Sevin, and toxaphene to the boll weevil, Anthonomus grandis Boh........................ . . . . ........ 3^ 3? The effects of simulated wind on the residual toxicities of Guthion, dieldrin..., and toxaphene dusts to the boll weevil, Anthonomus grandis Boh. 36 The effects of high temperatures on the residual toxicities of methyl parathion, malathion, and toxaphene to the boll weevil, Anthonomus grandis Boh...................... 3$ 5. The effects...
Wet Gasification of Ethanol Residue: A Preliminary Assessment
Brown, Michael D.; Elliott, Douglas C.
2008-09-22
A preliminary technoeconomic assessment has been made of several options for the application of catalytic hydrothermal gasification (wet gasification) to ethanol processing residues.
ABSTRACT: Bioenergy Harvesting Technologies to Supply Crop Residues...
objectives for the integration of advanced logistical systems and focused bioenergy harvesting technologies that supply crop residues and energy crops in a large bale format....
Water dynamics clue to key residues in protein folding
Gao, Meng [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China)] [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China); Zhu, Huaiqiu, E-mail: hqzhu@pku.edu.cn [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China)] [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China); Yao, Xin-Qiu [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China) [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China); Department of Biophysics, Kyoto University, Sakyo Kyoto 606-8502 (Japan); She, Zhen-Su, E-mail: she@pku.edu.cn [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China)] [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China)
2010-01-29
A computational method independent of experimental protein structure information is proposed to recognize key residues in protein folding, from the study of hydration water dynamics. Based on all-atom molecular dynamics simulation, two key residues are recognized with distinct water dynamical behavior in a folding process of the Trp-cage protein. The identified key residues are shown to play an essential role in both 3D structure and hydrophobic-induced collapse. With observations on hydration water dynamics around key residues, a dynamical pathway of folding can be interpreted.
Comparison of residual stresses in Inconel 718 simple parts made...
Office of Scientific and Technical Information (OSTI)
melting and direct laser metal sintering Residual stress profiles were mapped using neutron diffraction in two simple prism builds of Inconel 718: one fabricated with electron...
Potential of biomass residue availability; The case of Thailand
Bhattacharya, S.C.; Shrestha, R.M.; Ngamkajornvivat, S. (Energy Technology Div., Asian Institute of Technology, Bangkok 10501 (TH))
1989-01-01
An acute shortage of fuel wood and charcoal prevails in many developing countries. A logical approach to the problem places emphasis on the development of alternative energy sources, including use of biomass residues. An assessment of the potential of biomass residues for energy and other uses calls for an estimation of their annual production. Also, because the residues are normally bulky they should be utilized near their place of origin whenever possible to avoid high transportation costs. Thus knowledge of the total national generation of residues per year does not provide enough information for planning residue utilization. This article illustrates a method of residue estimation that takes the case of Thailand as an example. It presents the annual generation of nine agricultural resides (paddy husk, paddy straw, bagasse, cotton stalk, corn cob, groundnut shell, cassava stalk and coconut husk and shell) and one forestry residue (sawdust) in different agroeconomic zones and regions of Thailand. The methodology used for the investigation of crop-to-residue ratios is outlined. The annual generation figures for the different residues along with observations about their traditional uses are presented.
Residual orientation in micro-injection molded parts
Healy, John; Edward, Graham H.; Knott, Robert B. (Monash); (ANSTO)
2008-06-30
The residual orientation following micro-injection molding of small rectangular plates with linear polyethylene has been examined using small-angle neutron scattering, and small- and wide-angle X-ray scattering. The effect of changing the molding conditions has been examined, and the residual chain orientation has been compared to the residual orientation of the crystallites as a function of position in the sample. This study has found that, for micromoldings, the orientation of the crystallites decreases with increasing injection speed and increasing mold thickness. The combined data suggest that the majority of the orientation present comes from oriented crystal growth rather than residual chain orientation.
Residual Stresses for Structural Analysis and Fatigue Life Prediction...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
in Vehicle Components: Success stories from the High Temperature Materials Laboratory (HTML) User Program Residual Stresses for Structural Analysis and Fatigue Life Prediction in...
Residual Stress Measurements in Side Bonded Resistance Welds
PAUL, KORINKO
2005-04-18
Resistance upset welding is used to attach small diameter machined tubes to small gas vessels. Recently there has been interest in determining the level of residual stresses caused by this attachment method and its influence on environmental interactions. A test program was initiated to determine the residual stresses present due to welding using the nominal weld parameters and varying the interference between the foot and the counter bore. In this paper, the residual stress measurement technique is described, the welding conditions are provided, and the residual stress due to welding at the nominal conditions are presented.
Catalyst deactivation model for residual oil hydrodesulfurization
Takatsuka, T.; Higasino, S.; Hirohama, S. [Chiyoda Corporation, Yokohama (Japan)] [and others
1995-12-31
Hydrodesulfurization process plays a dominant role in the modern refineries to upgrade residual oil either by removing heterogeneous atoms or by hydrocracking the bottom to distillates products. The practical model is proposed to predict a catalyst life which is the most concern in the process. The catalyst is deactivated in the early stage of the operation by coke deposition on the catalyst active site. The ultimate catalyst life is determined by pore mouth plugging depending on its metal capacity. The phenomena are mathematically described by losses of catalyst surface area and effective diffusivity of feedstock molecules in catalyst pore. The model parameters were collected through the pilot plant tests with different types of catalysts and feedstocks.
Method For Characterizing Residual Stress In Metals
Jacobson, Loren A. (Santa Fe, NM); Michel, David J. (Alexandria, VA); Wyatt, Jeffrey R. (Burke, VA)
2002-12-03
A method is provided for measuring the residual stress in metals. The method includes the steps of drilling one or more holes in a metal workpiece to a preselected depth and mounting one or more acoustic sensors on the metal workpiece and connecting the sensors to an electronic detecting and recording device. A liquid metal capable of penetrating into the metal workpiece placed at the bottom of the hole or holes. A recording is made over a period of time (typically within about two hours) of the magnitude and number of noise events which occur as the liquid metal penetrates into the metal workpiece. The magnitude and number of noise events are then correlated to the internal stress in the region of the workpiece at the bottom of the hole.
Arzumanov, S. S.; Bondarenko, L. N.; Geltenbort, P.; Morozov, V. I.; Panin, Yu. N.; Chernyavsky, S. M.
2008-11-15
The results obtained by measuring the cross sections for the inelastic scattering of very cold neutrons for a number of metals and polymers by the method of a neutron-irradiation analysis are presented. The method is based on simultaneously measuring events of inelastic scattering and neutron capture in the sample under investigation via recording gamma radiation with a semiconductor germanium detector. Neutron capture by a nucleus of the sample is accompanied by the prompt radiation of gamma rays having a known spectrum. Upon inelastic scattering, a neutron acquires thermal energy. Upon leaving the sample, this neutron is absorbed in a special converter that contains the isotope {sup 10}B. The capture of the neutron by a {sup 10}B nucleus is followed by the emission of a 477-keV gamma ray. The probabilities of capture and inelastic scattering are proportional to the respective neutron-interaction cross sections, and the ratio of the recorded detector counts corresponding to events of the two types does not depend on the spectrum of the incident flux of very cold neutrons or on the trajectory of neutron motion in the sample. The sought inelastic-scattering cross section at a fixed sample temperature is calculated by using this ratio and the known cross section for neutron capture by the sample isotope having a known gamma-radiation spectrum.
Coulomb-Excitation of the Giant-Dipole Resonance in Light-Ion Inelastic-Scattering from Pb-208
Izumoto, T.; Lui, YW; Youngblood, David H.; Udagawa, T.; Tamura, T.
1981-01-01
VOLUME 24, NUMBER 5 NOVEMBER 1981 Coulomb excitation of the giant dipole resonance in light-ion inelastic scattering from Pb T. Izumoto, Y. -%. Lui, and D. H. Youngblood Cyclotron Institute, Texas A&M University, College Station, Texas 77843 T... the contribution from Coulomb excitation of 24 2179 , 1981 The American Physical Society 2180 IZUMOTO, LUI, YOUNGSLOOD, UDAGAW'A, AND TAMUWk 24 the GDR in the region of the GMR in Pb in (a,a') scattering with incident energies between 96 and 218 MeV. There is a...
Kang, Zhong-Bo
2008-01-01
We study the single-transverse spin asymmetry for open charm production in the semi-inclusive lepton-hadron deep inelastic scattering. We calculate the asymmetry in terms of the QCD collinear factorization approach for $D$ mesons at high enough $P_{h\\perp}$, and find that the asymmetry is proportional to the twist-three tri-gluon correlation function in the proton. With a simple model for the tri-gluon correlation function, we estimate the asymmetry for both COMPASS and eRHIC kinematics, and discuss the possibilities of extracting the tri-gluon correlation function in these experiments.
Zhong-Bo Kang; Jian-Wei Qiu
2008-06-12
We study the single-transverse spin asymmetry for open charm production in the semi-inclusive lepton-hadron deep inelastic scattering. We calculate the asymmetry in terms of the QCD collinear factorization approach for $D$ mesons at high enough $P_{h\\perp}$, and find that the asymmetry is proportional to the twist-three tri-gluon correlation function in the proton. With a simple model for the tri-gluon correlation function, we estimate the asymmetry for both COMPASS and eRHIC kinematics, and discuss the possibilities of extracting the tri-gluon correlation function in these experiments.
Yan-Xiao Gong; Zhen-Da Xie; Ping Xu; Xiao-Qiang Yu; Peng Xue; Shi-Ning Zhu
2011-12-20
We propose a scheme for the generation of counterpropagating polarization-entangled photon pairs from a dual-periodically poled crystal. Compared with the usual forward-wave type source, this source, in the backward-wave way, has a much narrower bandwidth. With a 2-cm-long bulk crystal, the bandwidths of the example sources are estimated to be 3.6 GHz, and the spectral brightnesses are more than 100 pairs/(s GHz mW). Two concurrent quasi-phase-matched spontaneous parametric down-conversion processes in a single crystal enable our source to be compact and stable. This scheme does not rely on any state projection and applies to both degenerate and non-degenerate cases, facilitating applications of the entangled photons.
Yan. V. Fyodorov; H. -J. Sommers
1997-01-07
Assuming the validity of random matrices for describing the statistics of a closed chaotic quantum system, we study analytically some statistical properties of the S-matrix characterizing scattering in its open counterpart. In the first part of the paper we attempt to expose systematically ideas underlying the so-called stochastic (Heidelberg) approach to chaotic quantum scattering. Then we concentrate on systems with broken time-reversal invariance coupled to continua via M open channels. By using the supersymmetry method we derive: (i) an explicit expression for the density of S-matrix poles (resonances) in the complex energy plane (ii) an explicit expression for the parametric correlation function of densities of eigenphases of the S-matrix. We use it to find the distribution of derivatives of these eigenphases with respect to the energy ("partial delay times" ) as well as with respect to an arbitrary external parameter.
H. -J. Sommers; Yan V. Fyodorov; M. Titov
1998-07-09
We study complex eigenvalues of large $N\\times N$ symmetric random matrices of the form ${\\cal H}=\\hat{H}-i\\hat{\\Gamma}$, where both $\\hat{H}$ and $\\hat{\\Gamma}$ are real symmetric, $\\hat{H}$ is random Gaussian and $\\hat{\\Gamma}$ is such that $NTr \\hat{\\Gamma}^2_2\\sim Tr \\hat{H}_1^2$ when $N\\to \\infty$. When $\\hat{\\Gamma}\\ge 0$ the model can be used to describe the universal statistics of S-matrix poles (resonances) in the complex energy plane. We derive the ensuing distribution of the resonance widths which generalizes the well-known $\\chi^2$ distribution to the case of overlapping resonances. We also consider a different class of "almost real" matrices when $\\hat{\\Gamma}$ is random and uncorrelated with $\\hat{H}$.
Original article Residues in wax and honey after Apilife VAR®
Paris-Sud XI, Université de
Original article Residues in wax and honey after Apilife VAR® treatment Stefan Bogdanov Anton and foundation were exposed to the air during storage. © Inra/DIB/AGIB/Elsevier, Paris honey / wax / residue to accumulation of these substances in beeswax and less so in honey [1, 17]. The accumulation in wax depends
Minimization of welding residual stress and distortion in large structures
Michaleris, Panagiotis
1 Minimization of welding residual stress and distortion in large structures P. Michaleris at Champaign Urbana, Urbana, IL Abstract Welding distortion in large structures is usually caused by buckling due to the residual stress. In cases where the design is fixed and minimum weld size requirements
Thermoacoustic method for relaxation of residual stresses in welded joints
Koshovyi, V.V.; Pakhn`o, M.I.; Tsykhan, O.I.
1995-01-01
We propose a thermoacoustic method for the relaxation of residual stresses in welded joints, present a block diagram of a generator of local thermoacoustic pulses designed for implementation of this method, and describe our experiment aimed at relaxation of residual tensile stresses.
Residual Energy-Aware Cooperative Transmission (REACT) in Wireless Networks
Leung, Kin K.
Residual Energy-Aware Cooperative Transmission (REACT) in Wireless Networks Erwu Liu, Qinqing Zhang in the network can cooper- ate their transmissions of information to gain energy savings in a distributed network the lifetime of the network and we call the selection method a residual energy-aware cooperative transmission
Parallel FPGA Implementation of RSA with Residue Number Systems
International Association for Cryptologic Research (IACR)
Multiplication based on Residue Num- ber Systems. Thanks to RNS, we develop a design able to perform an RSA propose a new DPA countermeasure in the framework of RNS. It is only (slightly) memory consuming (1]. That is the reason why Residue Number Systems (RNS for short) can be very useful. RNS have the main advantage of fast
Modular Arithmetic Implementation with the Residue Number System (RNS)
Sousa, Leonel
Modular Arithmetic Implementation with the Residue Number System (RNS) Samuel Antão and Leonel are the addition/subtraction, multiplication and reduction as well as the conversion of Residue Number System (RNS discussed in the following. 1 RNS Forward/Reverse Conversions Forward conversion corresponds
Parallel FPGA Implementation of RSA with Residue Number Systems
International Association for Cryptologic Research (IACR)
Multiplication based on Residue Num ber Systems. Thanks to RNS, we develop a design able to perform an RSA propose a new DPA countermeasure in the framework of RNS. It is only (slightly) memory consuming (1]. That is the reason why Residue Number Systems (RNS for short) can be very useful. RNS have the main advantage of fast
Identification of family-determining residues in PHD fingers
Geman, Donald
-evolution in their sequences. We measure the degree to which fixing the amino acid type at one position modifies the frequencies of amino acids at other positions. We then detect those position/amino acid combinations classify PHD fingers into different groups based on the analysis of residue residue co
Conversion of direct process high-boiling residue to monosilanes
Brinson, Jonathan Ashley (Vale of Glamorgan, GB); Crum, Bruce Robert (Madison, IN); Jarvis, Jr., Robert Frank (Midland, MI)
2000-01-01
A process for the production of monosilanes from the high-boiling residue resulting from the reaction of hydrogen chloride with silicon metalloid in a process typically referred to as the "direct process." The process comprises contacting a high-boiling residue resulting from the reaction of hydrogen chloride and silicon metalloid, with hydrogen gas in the presence of a catalytic amount of aluminum trichloride effective in promoting conversion of the high-boiling residue to monosilanes. The present process results in conversion of the high-boiling residue to monosilanes. At least a portion of the aluminum trichloride catalyst required for conduct of the process may be formed in situ during conduct of the direct process and isolation of the high-boiling residue.
A Residue Approach to the Finite Field Arithmetics 1/23 A Residue Approach to the Finite Field
as integers. Residue Number System RNS base: a set of coprime numbers (m1, ..., mk ) RNS representation: (a1 of order (f (m)) then in RNS the complexities become (f (log m)). #12;A Residue Approach to the Finite ), we obtain a similar representation as RNS. Operations are made independently on each A(ei ) (like
HE 1.3-1 THE PROTON-AIR INELASTIC CROSS SECTION AT E - 0.3 EeV G.L. Cassiday, R. Cooper, S their observation of the showers produced by protons interacting with air molecules, are able to shed light on the proton-air inelastic cross section ( Ã³( p-air )), a quantity that can be related, through calculations
Hu, Jiangping
Inelastic Neutron-Scattering Measurements of a Three-Dimensional Spin Resonance in the Fe, Purdue University, West Lafayette, Indiana 47907, USA 5 Neutron Scattering Science Division, Oak Ridge 2009) We use inelastic neutron scattering to study magnetic excitations of the Fe
Subedi, Ramesh R.; Wang, Diancheng; Pan, Kai; Deng, Xiaoyan; Michaels, Robert W.; Shahinyan, Albert; Wojtsekhowski, Bogdan B.; Zheng, Xiaochao
2013-10-01
An experiment that measured the parity violating asymmetries in deep inelastic scattering was completed at the Thomas Jefferson National Accelerator Facility in experimental Hall A. From these asymmetries, a combination of the quark weak axial charge could be extracted with a factor of five improvement in precision over world data. To achieve this, asymmetries at the 10^-4 level needed to be measured at event rates up to 500 kHz and the high pion background typical to deep inelastic scattering experiments needed to be rejected efficiently. A specialized data acquisition (DAQ) system with intrinsic particle identification (PID) was successfully developed and used: The pion contamination in the electron samples was controlled at the order of 2 × 10^-4 or below with an electron efficiency of higher than 91% throughout the production period of the experiment, the systematic uncertainty in the measured asymmetry due to DAQ deadtime was below 0.2%, and the statistical quality of the asymmetry measurement agreed with the Gaussian distribution to over five orders of magnitudes. The DAQ system is presented here with an emphasis on its design scheme, the achieved PID performance, deadtime effect and the capability of measuring small asymmetries.
C. Gustavsson; C. Hellesen; S. Pomp; A. Öhrn; J. Blomgren; U. Tippawan
2013-03-27
This work is part of an effort to provide more experimental data for the (n,n'x) reaction. The experiments were carried out at The Svedberg Laboratory in Uppsala, Sweden, at the quasi-mono-energetic neutron beam of 96 MeV, before the facility was upgraded in 2004. Using an extended data analysis of data primarily intended for measuring elastic neutron scattering only, it was found to be possible to extract information on the inelastic scattering from several nuclei. In the preliminary data analysis, an iterative forward-folding technique was applied, in which a physically reasonable trial spectrum was folded with the response function of the detector system and the output was compared to the experimental data. As a result, double-differential cross sections and angular distributions of inelastic neutron scattering from 12-C, 56-Fe, 89-Y and 208-Pb could be obtained. In this paper, a status update on the efforts to improve the description of the detector response function is given.
Furusawa, Shun; Nagakura, Hiroki; Yamada, Shoichi [Advanced Research Institute for Science and Engineering, Waseda University, 3-4-1, Okubo, Shinjuku, Tokyo 169-8555 (Japan); Sumiyoshi, Kohsuke, E-mail: furusawa@heap.phys.waseda.ac.jp [Numazu College of Technology, Ooka 3600, Numazu, Shizuoka 410-8501 (Japan)
2013-09-01
We perform numerical experiments to investigate the influence of inelastic neutrino reactions with light nuclei on the standing accretion shock instability (SASI). The time evolution of shock waves is calculated with a simple light-bulb approximation for the neutrino transport and a multi-nuclei equation of state. The neutrino absorptions and inelastic interactions with deuterons, tritons, helions, and alpha particles are taken into account in the hydrodynamical simulations. In addition, the effects of ordinary charged-current interactions with nucleons is addressed in the simulations. Axial symmetry is assumed but no equatorial symmetry is imposed. We show that the heating rates of deuterons reach as high as {approx}10% of those of nucleons around the bottom of the gain region. On the other hand, alpha particles are heated near the shock wave, which is important when the shock wave expands and the density and temperature of matter become low. It is also found that the models with heating by light nuclei evolve differently in the non-linear phase of SASI than do models that lack heating by light nuclei. This result is because matter in the gain region has a varying density and temperature and therefore sub-regions appear that are locally rich in deuterons and alpha particles. Although the light nuclei are never dominant heating sources and they work favorably for shock revival in some cases and unfavorably in other cases, they are non-negligible and warrant further investigation.
Shevchenko, Vladislav
AN ORIGIN FOR THE SOUTH POLE-AITKEN BASIN THORIUM. V.I. Chikmachev, S.G.Pugacheva, Sternberg State, that within the limits of the possible Al-Khwarizmi/King basin [3]. The SPA basin thorium map: The using data Lunar Prospector [4] the thorium distribution map demonstrated a hemisphere of the Moon which contains
Pure low-frequency flexural mode of [011]c poled relaxor-PbTiO3 single crystals excited by k32 mode
Cao, Wenwu
promising for applications in low fre- quency piezoelectric devices. Another low-frequency mode crystals poled along [011]c exhibits superior lateral extensional piezoelectric response, which enables of the pseudo-cubic direction. Recently, it was found that the shear piezoelectric coefficients d36 could excess
MINIMIZING WASTE AND COST IN DISPOSITION OF LEGACY RESIDUES
J. BALKEY; M. ROBINSON
2001-05-01
Research is being conducted at the Los Alamos National Laboratory (LANL) which is directed toward development of a quantitative basis for disposition of actinide-bearing process residues (both legacy residues and residues generated from ongoing programmatic operations). This research is focused in two directions: (1) identifying minimum negative consequence (waste, dose, cost) dispositions working within regulatory safeguards termination criteria, and (2) evaluating logistics/consequences of across-the-board residue discards such as authorized at Rocky Flats under a safeguards termination variance. The first approach emphasizes Laboratory commitments to environmental stewardship, worker safety, and fiscal responsibility. This approach has been described as the Plutonium Disposition Methodology (PDM) in deference to direction provided by DOE Albuquerque. The second approach is born of the need to expedite removal of residues from storage for programmatic and reasons and residue storage safety concerns. Any disposition path selected must preserve the legal distinction between residues as Special Nuclear Material (SNM) and discardable materials as waste in order to insure the continuing viability of Laboratory plutonium processing facilities for national security operations.
Rettura, A.; Stern, D.; Martinez-Manso, J.; Gettings, D.; Gonzalez, A. H.; Mei, S.; Ashby, M. L. N.; Brodwin, M.; Stanford, S. A.; Bartlett, J. G.
2014-12-20
We present 279 galaxy cluster candidates at z > 1.3 selected from the 94 deg{sup 2} Spitzer South Pole Telescope Deep Field (SSDF) survey. We use a simple algorithm to select candidate high-redshift clusters of galaxies based on Spitzer/IRAC mid-infrared data combined with shallow all-sky optical data. We identify distant cluster candidates adopting an overdensity threshold that results in a high purity (80%) cluster sample based on tests in the Spitzer Deep, Wide-Field Survey of the Boötes field. Our simple algorithm detects all three 1.4 < z ? 1.75 X-ray detected clusters in the Boötes field. The uniqueness of the SSDF survey resides not just in its area, one of the largest contiguous extragalactic fields observed with Spitzer, but also in its deep, multi-wavelength coverage by the South Pole Telescope (SPT), Herschel/SPIRE, and XMM-Newton. This rich data set will allow direct or stacked measurements of Sunyaev-Zel'dovich effect decrements or X-ray masses for many of the SSDF clusters presented here, and enable a systematic study of the most distant clusters on an unprecedented scale. We measure the angular correlation function of our sample and find that these candidates show strong clustering. Employing the COSMOS/UltraVista photometric catalog in order to infer the redshift distribution of our cluster selection, we find that these clusters have a comoving number density n{sub c}=(0.7{sub ?0.6}{sup +6.3})×10{sup ?7} h{sup 3} Mpc{sup ?3} and a spatial clustering correlation scale length r {sub 0} = (32 ± 7) h {sup –1} Mpc. Assuming our sample is comprised of dark matter halos above a characteristic minimum mass, M {sub min}, we derive that at z = 1.5 these clusters reside in halos larger than M{sub min}=1.5{sub ?0.7}{sup +0.9}×10{sup 14} h{sup ?1} M{sub ?}. We find that the mean mass of our cluster sample is equal to M{sub mean}=1.9{sub ?0.8}{sup +1.0}×10{sup 14} h{sup ?1} M{sub ?}; thus, our sample contains the progenitors of present-day massive galaxy clusters.
Chen, X.; Lui, Y. -W; Clark, H. L.; Tokimoto, Y.; Youngblood, David H.
2007-01-01
with and without density dependence. DWBA calculations with the fitted parameters were used to calculate cross sections for inelastic scattering to low-lying 2(+)and 3(-) states. B(E2) and B(E3) values were extracted and compared with electromagnetic values...
Suo, Zhigang
Inelastic hosts as electrodes for high-capacity lithium-ion batteries Kejie Zhao, Matt Pharr, Joost for high-capacity lithium-ion batteries. Upon absorbing lithium, silicon swells several times its volume strength. © 2011 American Institute of Physics. doi:10.1063/1.3525990 Lithium-ion batteries
Lee, Hu-Jong
,7 II. SAMPLE PREPARATION AND MEASUREMENTS A monolayer graphene sheet used in this study was meInelastic scattering in a monolayer graphene sheet: A weak-localization study Dong-Keun Ki in a graphene sheet, a single layer of graphite, exhibit distinct characteristics from those in other two
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Zhang, Y; Qian, X; Allada, K; Dutta, C; Huang, J; Katich, J; Wang, Y; Aniol, K; Annand, J R.; Averett, T; et al
2014-11-01
An experiment to measure single-spin asymmetries in semi-inclusive production of charged pions in deep-inelastic scattering on a transversely polarized 3He target was performed at Jefferson Lab in the kinematic region of 0.16
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Zhang, Y.; Qian, X.; Allada, K.; Dutta, C.; Huang, J.; Katich, J.; Wang, Y.; Aniol, K.; Annand, J. R. M.; Averett, T.; et al
2014-11-24
An experiment to measure single-spin asymmetries in semi-inclusive production of charged pions in deep-inelastic scattering on a transversely polarized ³He target was performed at Jefferson Lab in the kinematic region of 0.16 ± on 3He and on neutron pretzelosity asymmetries are consistent with zero within experimental uncertainties.
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Zhao, Y X; Wang, Y; Allada, K; Aniol, K; Annand, J R; Averett, T; Benmokhtar, F; Bertozzi, W; Bradshaw, P C; Bosted, P; et al
2014-11-01
We report the first measurement of target single spin asymmetries of charged kaons produced in semi-inclusive deep inelastic scattering of electrons off a transversely polarized 3He target. Both the Collins and Sivers moments, which are related to the nucleon transversity and Sivers distributions, respectively, are extracted over the kinematic range of 0.1
Measurement of the inelastic pp cross-section at a centre-of-mass energy of ?s = 7 TeV
Counts, Ian Thomas Hunt
The cross-section for inelastic proton-proton collisions, with at least one prompt long-lived charged particle of transverse momentum p [subscript T] > 0.2GeV/c in the pseudorapidity range 2.0 < ? < 4.5, is measured by the ...
in commercial lithium-ion batteries for both cathodes e.g., LiCoO2 and anodes e.g., graphite . By contrastInelastic hosts as electrodes for high-capacity lithium-ion batteries Kejie Zhao, Matt Pharr, Joost for high-capacity lithium-ion batteries. Upon absorbing lithium, silicon swells several times its volume
Inelastic carrier lifetime in graphene E. H. Hwang,1 Ben Yu-Kuang Hu,2,1 and S. Das Sarma1
Hu, Ben Yu-Kuang
and K points degeneracies, respectively. Thus, graphene is a gapless semiconductor. In intrinsic graphene, the Fermi level lies at the Dirac points, but as with other semiconductors it is possibleInelastic carrier lifetime in graphene E. H. Hwang,1 Ben Yu-Kuang Hu,2,1 and S. Das Sarma1 1
Kushner, Mark
Evidence for inelastic processes for N3 and N4 from ion energy distributions in He/N2 radio May 1995; accepted for publication 19 September 1995 The ion energy distributions IEDs striking. The importance of the distributions of ion energies and angles striking the wafer in obtaining straight walled
Zhao, Y X; Wang, Y; Allada, K; Aniol, K; Annand, J R; Averett, T; Benmokhtar, F; Bertozzi, W; Bradshaw, P C; Bosted, P; Camsonne, A; Canan, M; Cates, G D; Chen, C; Chen, J -P; Chen, W; Chirapatpimol, K; Chudakov, E; Cisbani, E; Cornejo, J C; Cusanno, F; Dalton, M M; Deconinck, W; de Jager, C W; De Leo, R; Deng, X; Deur, A; Ding, H; Dolph, P A; Dutta, C; Dutta, D; El Fassi, L; Frullani, S; Gao, H; Garibaldi, F; Gaskell, D; Gilad, S; Gilman, R; Glamazdin, O; Golge, S; Guo, L; Hamilton, D; Hansen, O; Higinbotham, D W; Holmstrom, T; Huang, J; Huang, M; Ibrahim, H F; Iodice, M; Jiang, X; Jin, G; Jones, M K; Katich, J; Kelleher, A; Kim, W; Kolarkar, A; Korsch, W; LeRose, J J; Li, X; Li, Y; Lindgren, R; Liyanage, N; Long, E; Lu, H -J; Margaziotis, D J; Markowitz, P; Marrone, S; McNulty, D; Meziani, Z -E; Michaels, R; Moffit, B; Munoz Camacho, C; Nanda, S; Narayan, A; Nelyubin, V; Norum, B; Oh, Y; Osipenko, M; Parno, D; Peng, J -C; Phillips, S K; Posik, M; Puckett, A J; Qian, X; Qiang, Y; Rakhman, A; Ransome, R; Riordan, S; Saha, A; Sawatzky, B; Schulte, E; Shahinyan, A; Shabestari, M H; Sirca, S; Stepanyan, S; Subedi, R; Sulkosky, V; Tang, L -G; Tobias, A; Urciuoli, G M; Vilardi, I; Wang, K; Wojtsekhowski, B; Yan, X; Yao, H; Ye, Y; Ye, Z; Yuan, L; Zhan, X; Zhang, Y; Zhang, Y -W; Zhao, B; Zheng, X; Zhu, L; Zhu, X; Zong, X
2014-11-01
We report the first measurement of target single spin asymmetries of charged kaons produced in semi-inclusive deep inelastic scattering of electrons off a transversely polarized 3He target. Both the Collins and Sivers moments, which are related to the nucleon transversity and Sivers distributions, respectively, are extracted over the kinematic range of 0.1
An urban infill : a residual site in Boston
Savvides, Andreas L. (Andreas Loucas)
1996-01-01
This thesis is concerned with the treatment of residual sites in the context of the urban environment and in particular with the wounds inflicted by the passage of the Massachusetts Turnpike through the city of Boston. The ...
Residual zonal flows in tokamaks and stellarators at arbitrary wavelengths
Monreal, P; Sánchez, E; Parra, F I; Bustos, A; Könies, A; Kleiber, R; Görler, T
2015-01-01
In the linear collisionless limit, a zonal potential perturbation in a toroidal plasma relaxes, in general, to a non-zero residual value. Expressions for the residual value in tokamak and stellarator geometries, and for arbitrary wavelengths, are derived. These expressions involve averages over the lowest order particle trajectories, that typically cannot be evaluated analytically. In this work, an efficient numerical method for the evaluation of such expressions is reported. It is shown that this method is faster than direct gyrokinetic simulations. Calculations of the residual value in stellarators are provided for much shorter wavelengths than previously available in the literature. Electrons must be treated kinetically in stellarators because, unlike in tokamaks, kinetic electrons modify the residual value even at long wavelengths. This effect, that had already been predicted theoretically, is confirmed by gyrokinetic simulations.
Asphalt landscape after all : residual suburban surface as public infrastructure
O'Connor, Joseph Michael, M. Arch. Massachusetts Institute of Technology
2011-01-01
The thesis proposes a hybridized commercial retail strip inserted into a residual suburban condition as a manner of investigating the latent potential of suburban logic, both its constituent elements and its formal rules ...
RetroFILL : residual spaces as urban infill
Kobel, Marika
2010-01-01
In any city there are small slivers and chunks of awkward spaces - in between buildings, occupying edge conditions, not large enough to warrant many forms of traditional use - which can be termed residual. These areas of ...
Residual stress in electrodeposited nanocrystalline nickel-tungsten coatings
Ziebell, Tiffany D.
Characterizing the residual stress of thick nanocrystalline electrodeposits poses several unique challenges due to their fine grain structure, thickness distribution, and matte surface. We use a three-dimensional ...
Modeling, Optimization and Economic Evaluation of Residual Biomass Gasification
Georgeson, Adam
2012-02-14
and product options are available for gasification along with combinations thereof. The objective of this work is to create a systematic method for optimizing the design of a residual biomass gasification unit. In detail, this work involves development...
The determination of thru-thickness residual bending stresses
Rinehart, Adam James
2000-01-01
In order to understand the fatigue behavior of dents in pressurized pipelines it is necessary to understand the residual stresses that result from cyclic plastic bending. Three approaches are taken here in studying a beam cross section: a discrete...
Residue disposal from waste-to-energy facilities
Walsh, P.; O'Leary, P.; Cross, F.
1987-05-01
When considering a waste-to-energy project, some local officials believe that waste-to-energy is a complete alternative to landfilling. While these projects can reduce waste volume substantially, the process will still produce residues that must be properly handled in order to protect the environment. All systems produce fly ash and bottom ash, and some systems also produce wastewater. This article discusses alternative methods for addressing these residue control problems.
Method for residual stress relief and retained austenite destabilization
Ludtka, Gerard M.
2004-08-10
A method using of a magnetic field to affect residual stress relief or phase transformations in a metallic material is disclosed. In a first aspect of the method, residual stress relief of a material is achieved at ambient temperatures by placing the material in a magnetic field. In a second aspect of the method, retained austenite stabilization is reversed in a ferrous alloy by applying a magnetic field to the alloy at ambient temperatures.
An investigation of residual stress in welded joints
Moffat, William Hugh
1951-01-01
. flummery and Conclusions VII. '-. &uggested Procedure for I"uture Investigation 18 o i' VIII. ? . Ppendix IX. Bibliography LIST OP EIGURES Ro. Title Page 1. 'welded Plates snd Gptical Gage Used by Soulton and Martin ~ ~ 6 2. Dr. Rao~s Method... AN INVESTIGATION OF RESIDUAL STRESS IN WELDED JOINTS INTRODUCTION The object of the research reported in this paper was to investigate the magnitude of transverse and longi- tudial residual stress in a welded Joint. These are the stresses in a direction...
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Baxter, E. J.; Keisler, R.; Dodelson, S.; Aird, K. A.; Allen, S. W.; Ashby, M. L.N.; Bautz, M.; Bayliss, M.; Benson, B. A.; Bleem, L. E.; et al
2015-06-22
Clusters of galaxies are expected to gravitationally lens the cosmic microwave background (CMB) and thereby generate a distinct signal in the CMB on arcminute scales. Measurements of this effect can be used to constrain the masses of galaxy clusters with CMB data alone. Here we present a measurement of lensing of the CMB by galaxy clusters using data from the South Pole Telescope (SPT). We also develop a maximum likelihood approach to extract the CMB cluster lensing signal and validate the method on mock data. We quantify the effects on our analysis of several potential sources of systematic error andmore »find that they generally act to reduce the best-fit cluster mass. It is estimated that this bias to lower cluster mass is roughly 0.85? in units of the statistical error bar, although this estimate should be viewed as an upper limit. Furthermore, we apply our maximum likelihood technique to 513 clusters selected via their Sunyaev–Zeldovich (SZ) signatures in SPT data, and rule out the null hypothesis of no lensing at 3.1?. The lensing-derived mass estimate for the full cluster sample is consistent with that inferred from the SZ flux: (68% C.L., statistical error only).« less
J- and Ks-band Galaxy Counts and Color Distributions in the AKARI North Ecliptic Pole Field
Koji Imai; Hideo Matsuhara; Shinki Oyabu; Takehiko Wada; Toshinobu Takagi; Naofumi Fujishiro; Hitoshi Hanami; Chris P. Pearson
2007-02-09
We present the J- and Ks-band galaxy counts and galaxy colors covering 750 square arcminutes in the deep AKARI North Ecliptic Pole (NEP) field, using the FLoridA Multi-object Imaging Near-ir Grism Observational Spectrometer (FLAMINGOS) on the Kitt Peak National Observatory (KPNO) 2.1m telescope. The limiting magnitudes with a signal-to-noise ratio of three in the deepest regions are 21.85 and 20.15 in the J- and Ks-bands respectively in the Vega magnitude system. The J- and Ks-band galaxy counts in the AKARI NEP field are broadly in good agreement with those of other results in the literature, however we find some indication of a change in the galaxy number count slope at J~19.5 and over the magnitude range 18.0 < Ks < 19.5. We interpret this feature as a change in the dominant population at these magnitudes because we also find an associated change in the B - Ks color distribution at these magnitudes where the number of blue samples in the magnitude range 18.5 < Ks < 19.5 is significantly larger than that of Ks < 17.5.
ZEUS Collaboration
2009-03-24
Measurements of the cross sections for charged current deep inelastic scattering in e-p collisions with longitudinally polarised electron beams are presented. The measurements are based on a data sample with an integrated luminosity of 175 pb-1 collected with the ZEUS detector at HERA at a centre-of-mass energy of 318 GeV. The total cross section is given for positively and negatively polarised electron beams. The differential cross-sections dsigma/dQ2, dsigma/dx and dsigma/dy are presented for Q2>200 GeV2. The double-differential cross-section d2sigma/dxdQ2 is presented in the kinematic range 280
Inelastic proton-air cross section at 0.2 TeV-10 PeV
N. Nesterova
2015-06-13
Experimental data from the Tien Shan complex array on different components of extensive air showers at 0.5-10 PeV primary cosmic rays are compared with results of various calculated models of cosmic rays interactions at the atmosphere. Conclusion is made about the growth with energy of the inelastic proton-air cross section {\\sigma}p-air from 0.2 TeV (accelerator experiments with fixed targets) to 10 PeV (cosmic rays). The analysis showed that the rise conforms to (7-9)% per one order of energy. That corresponds to {\\sigma}p-air (1 PeV) = 350 mb. These data correspond better to the new QGSJET-II-04 version of the interaction model based on the recent LHC results. This model predicts better the slower rise of the cross section than previous versions of QGSJET-II and some other models.
Stéphane Mischler; Clément Mouhot
2006-07-21
We consider the spatially homogeneous Boltzmann equation for inelastic hard spheres, in the framework of so-called constant normal restitution coefficients. We prove the existence of self-similar solutions, and we give pointwise estimates on their tail. We also give general estimates on the tail and the regularity of generic solutions. In particular we prove Haff 's law on the rate of decay of temperature, as well as the algebraic decay of singularities. The proofs are based on the regularity study of a rescaled problem, with the help of the regularity properties of the gain part of the Boltzmann collision integral, well-known in the elastic case, and which are extended here in the context of granular gases.
Huang, Xian-Rong
2011-01-01
The development of medium-energy inelastic X-ray scattering (IXS) optics with meV and sub-meV resolution has attracted considerable efforts in recent years. Meanwhile, there are also concerns or debates about the fundamental and feasibility of the involved schemes. Here the central optical component, the back-reflection angular-dispersion monochromator or analyzer, is analyzed. The results show that the multiple-beam diffraction effect together with transmission-induced absorption can noticeably reduce the diffraction efficiency, although it may not be a fatal threat. In order to improve the efficiency, a simple four-bounce analyzer is proposed that completely avoids these two adverse effects. The new scheme is illustrated to be a feasible alternative approach for developing meV- to sub-meV-resolution IXS spectroscopy.
Probing single magnon excitations in Sr?IrO? using O K-edge resonant inelastic x-ray scattering
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Liu, X.; Dean, M. P. M.; Liu, J.; Chiuzbaian, S. G.; Jaouen, N.; Nicolaou, A.; Yin, W. G.; Rayan Serrao, C.; Ramesh, R.; Ding, H.; et al
2015-04-28
Resonant inelastic X-ray scattering (RIXS) at the L-edge of transition metal elements is now commonly used to probe single magnon excitations. Here we show that single magnon excitations can also be measured with RIXS at the K-edge of the surrounding ligand atoms when the center heavy metal elements have strong spin-orbit coupling. This is demonstrated with oxygen K-edge RIXS experiments on the perovskite Sr?IrO?, where low energy peaks from single magnon excitations were observed. This new application of RIXS has excellent potential to be applied to a wide range of magnetic systems based on heavy elements, for which the L-edgemore »RIXS energy resolutions in the hard X-ray region is usually poor.« less
Probing single magnon excitations in Sr?IrO? using O K-edge resonant inelastic x-ray scattering
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Liu, X. [Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS); Brookhaven National Lab. (BNL), Upton, NY (United States); Collaborative Innovation Center of Quantum Matter, Beijing (China); Dean, M. P. M. [Brookhaven National Lab. (BNL), Upton, NY (United States); Liu, J. [Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Chiuzbaian, S. G. [Sorbonne Univ., Paris (France); Synchrotron SOLEIL, Saint-Aubin (France); Jaouen, N. [Synchrotron SOLEIL, Saint-Aubin (France); Nicolaou, A. [Synchrotron SOLEIL, Saint-Aubin (France); Yin, W. G. [Brookhaven National Lab. (BNL), Upton, NY (United States); Rayan Serrao, C. [Univ. of California, Berkeley, CA (United States); Ramesh, R. [Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Ding, H. [Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS); Collaborative Innovation Center of Quantum Matter, Beijing (China); Hill, J. P. [Brookhaven National Lab. (BNL), Upton, NY (United States)
2015-05-27
Resonant inelastic X-ray scattering (RIXS) at the L-edge of transition metal elements is now commonly used to probe single magnon excitations. Here we show that single magnon excitations can also be measured with RIXS at the K-edge of the surrounding ligand atoms when the center heavy metal elements have strong spin-orbit coupling. This is demonstrated with oxygen K-edge RIXS experiments on the perovskite Sr?IrO?, where low energy peaks from single magnon excitations were observed. This new application of RIXS has excellent potential to be applied to a wide range of magnetic systems based on heavy elements, for which the L-edge RIXS energy resolutions in the hard X-ray region is usually poor.
O. Waldmann
2003-04-21
For powder samples of polynuclear metal complexes the dependence of the inelastic neutron scattering intensity on the momentum transfer Q is known to be described by a combination of so called interference terms. They reflect the interplay between the geometrical structure of the compound and the spatial properties of the wave functions involved in the transition. In this work, it is shown that the Q-dependence is strongly interrelated with the molecular symmetry of molecular nanomagnets, and, if the molecular symmetry is high enough, is actually completely determined by it. A general formalism connecting spatial symmetry and interference terms is developed. The arguments are detailed for cyclic spin clusters, as experimentally realized by e.g. the octanuclear molecular wheel Cr8, and the star like tetranuclear cluster Fe4.
M. Batista; R. J. M. Covolan
1998-11-20
The Regge-Mueller formalism is used to describe the inclusive spectrum of the proton in $p p$ collisions. From such a description the energy dependences of both average inelasticity and leading proton multiplicity are calculated. These quantities are then used to establish the connection between the average charged particle multiplicities measured in {\\bf $e^+e^-$} and {\\bf $pp/{\\bar p}p$} processes. The description obtained for the leading proton cross section implies that Feynman scaling is strongly violated only at the extreme values of $x_F$, that is at the central region ($x_F \\approx 0$) and at the diffraction region ($x_F \\approx 1$), while it is approximately observed in the intermediate region of the spectrum.
Ruggles, M.B. [Oak Ridge National Lab., TN (United States); Ogata, T. [Central Research Inst. of Electric Power Industry, Tokyo (Japan). Komae Research Lab.
1994-02-01
The ever increasing demand for safety requires that stringent and conservative methodology be developed for design and analysis of reactor components. At present modified 9Cr-1Mo steel is a candidate material for construction of steam generators in fast breeder reactors. Therefore high-temperature material properties and extensive insight into deformation behavior and creep-fatigue life are required to develop design guidelines for use of modified 9Cr-1Mo steel in actual plant components. However, existing information on creep-fatigue and deformation response of modified 9Cr-1Mo steel is insufficient, and further experimental and modeling efforts are needed. A joint effort between the Electric Power Research Institute (EPRI) in the United States and the Central Research Institute of Electric Power Industry (CRIEPI) in Japan was started in 1991 to investigate the inelastic behavior of and to develop creep-fatigue criteria for modified 9Cr-1Mo steel at elevated temperatures. The current program focuses on uniaxial and biaxial fatigue, creep, and creep-fatigue tests. Results of this effort are presented in this report. Section 2 introduces the test material and experimental arrangement. Uniaxial exploratory deformation tests and unified constitutive equations for inelastic analysis of modified 9Cr-1Mo steel are presented in Sections 3 and 4, respectively. Axial fatigue and creep-fatigue test results are discussed in Section 5. Section 6 is devoted to constant stress creep tests. Biaxial fatigue and creep-fatigue tests are described in Section 7. Progress in creep-fatigue life evaluation is reported in Section 8.
Measurement of the Parity-Violating Asymmetry in Deep Inelastic Scattering at JLab 6 GeV
Wang, Diancheng
2013-12-01
The parity-violating asymmetry in deep inelastic scattering (PVDIS) offers us a useful tool to study the weak neutral couplings and the hadronic structure of the nucleon, and provides high precision tests on the Standard Model. During the 6 GeV PVDIS experiment at the Thomas Jefferson National Accelerator Facility, the parity-violating asymmetries A{sub PV} of a polarized electron beam scattering off an unpolarized deuteron target in the deep inelastic scattering region were precisely measured at two Q{sup 2} values of 1.1 and 1.9 (GeV/c){sup 2}. The asymmetry at Q{sup 2}=1.9 (GeV/c){sup 2} can be used to extract the weak coupling combination 2C{sub 2u} - C{sub 2d}, assuming the higher twist effect is small. The extracted result from this measurement is in good agreement with the Standard Model prediction, and improves the precision by a factor of five over previous data. In addition, combining the asymmetries at both Q{sup 2} values provides us extra knowledge on the higher twist effects. The parity violation asymmetries in the resonance region were also measured during this experiment. These results are the first A{sub PV} data in the resonance region beyond the {Delta}#1;(1232). They provide evidence that the quark hadron duality works for A{sub PV} at the (10-15)% level, and set constraints on nucleon resonance models that are commonly used for background calculations to other parity-violating electron scattering measurements.
Kaptari, Leonya P. [University of Perugia (Italy); INFN-Perugia (Italy); Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Joint Inst. for Nuclear Research, Dubna (Russia); Del Dotto, Alessio [University of Rome, Rome (Italy); INFN-Roma (Italy); Pace, Emanuele [University of Rome (Italy); INFN-Tor Vergata (Italy); Salme, Giovanni [INFN-Roma (Italy); Scopetta, Sergio [University of Perugia (Italy); INFN-Perugia (Italy)
2014-03-01
The spin dependent spectral function, relevant to describe polarized electron scattering off polarized {sup 3}He, is studied, within the Plane Wave Impulse Approximation and taking into account final state interaction effects (FSI). In particular, the case of semi-inclusive deep inelastic scattering (SiDIS) is considered, evaluating the FSI of the hadronizing quark with the nuclear remnants. It is shown that particular kinematical regions can be selected to minimize the latter effects, so that parton distributions in the neutron can be accessed. On the other side, in the regions where FSI dominates, the considered reactions can elucidate the mechanism of hadronization of quarks during the propagation in the nuclear medium. It is shown that the obtained spin dependent spectral function can be directly applied to investigate the SiDIS reaction e-vector + {sup 3}He-vector to h+X, where the hadron h originates from the current fragmentation. Experiments of this type are being performed at JLab to extract neutron transverse momentum dependent parton distributions. As a case study, a different SiDIS process, with detection of slow (A-1) systems in the final state, is considered in more details, in order to establish when nuclear structure effects and FSI can be distinguished from elementary reactions on quasi-free nucleons. It is argued that, by a proper choice of kinematics, the origin of nuclear effects in polarized DIS phenomena and the details of the interaction between the hadronizing quark and the nuclear medium can be investigated at a level which is not reachable in inclusive deep inelastic scattering.
Jacobson, R. A.
2014-11-01
French et al. determined the orbits of the Uranian rings, the orientation of the pole of Uranus, and the gravity harmonics of Uranus from Earth-based and Voyager ring occultations. Jacobson et al. determined the orbits of the Uranian satellites and the masses of Uranus and its satellites from Earth-based astrometry and observations acquired with the Voyager 2 spacecraft; they used the gravity harmonics and pole from French et al. Jacobson and Rush reconstructed the Voyager 2 trajectory and redetermined the Uranian system gravity parameters, satellite orbits, and ring orbits in a combined analysis of the data used previously augmented with additional Earth-based astrometry. Here we report on an extension of that work that incorporates additional astrometry and ring occultations together with improved data processing techniques.
Daruo Xie; Matthew Pysher; Jietai Jing; Olivier Pfister
2007-06-06
An intrinsically stable type-I optical parametric oscillator was built with a periodically poled KTiOPO4 (PPKTP) crystal to generate a stable bright, continuous-wave, broadband phase-squeezed beam. A 3.2 dB sensitivity enhancement of optical interferometry was demonstrated on weak electrooptic modulation signals within a 20 MHz squeezing bandwidth. This also realized a channel capacity increase beyond that of coherent optical communication.
Absorbing Aerosol Index (AAI) The residue method for the detection of aerosols
Graaf, Martin de
and calculation Main sensitivities of residue Problems with the residue Conclusions and outlook #12;#12;o = 380 scattering and absorption #12;#12;#12;Nadir View Solar zenith angle = 45o Residue = 3.5 Rayleigh atmosphere View Solar zenith angle = 45o Residue = -1.0 Rayleigh atmosphere, As = 0.16 Scattering aerosol layer
Fault-Tolerant Linear Convolution Using Residue Number M.G.Parker,M.Benaissa
Parker, Matthew Geoffrey
This paper proposes a Fault-Tolerant Linear Convolution architecture using Residue Number Systems (RNS) and Polynomial Residue Number Systems (PRNS). The RNS and PRNS are both given error-detection capability Residue Number Systems (RNS) [4]. A RNS performs computation over a number of independent residue channels
Measuring depth profiles of residual stress with Raman spectroscopy
Enloe, W.S.; Sparks, R.G.; Paesler, M.A.
1988-12-01
Knowledge of the variation of residual stress is a very important factor in understanding the properties of machined surfaces. The nature of the residual stress can determine a part`s susceptibility to wear deformation, and cracking. Raman spectroscopy is known to be a very useful technique for measuring residual stress in many materials. These measurements are routinely made with a lateral resolution of 1{mu}m and an accuracy of 0.1 kbar. The variation of stress with depth; however, has not received much attention in the past. A novel technique has been developed that allows quantitative measurement of the variation of the residual stress with depth with an accuracy of 10nm in the z direction. Qualitative techniques for determining whether the stress is varying with depth are presented. It is also demonstrated that when the stress is changing over the volume sampled, errors can be introduced if the variation of the stress with depth is ignored. Computer aided data analysis is used to determine the depth dependence of the residual stress.
Characterization of Residual Medium Peptides from Yersinia pestis Cultures
Clowers, Brian H.; Wunschel, David S.; Kreuzer, Helen W.; Engelmann, Heather E.; Valentine, Nancy B.; Wahl, Karen L.
2013-04-03
Using a range of common microbial medium formulations (TSB, BHI, LB, and G-media), two attenuated strains of Y. pestis (KIM D27 (pgm-) and KIMD1 lcr-) were cultivated in triplicate. These cellular suspensions were used to develop a method of extracting residual medium peptides from the final microbial preparation to assess their relative abundance and identity. Across the conditions examined, which included additional cellular washing and different forms of microbial inactivation, residual medium peptides were detected. Despite the range of growth medium sources used and the associated manufacturing processes used in their production, a high degree of peptide similarity was observed for a given medium recipe. These results demonstrate that residual medium peptides are retained using traditional microbial cultivation techniques and may be used to inform forensic investigations with respect to production deduction.
Residual strain mapping of Roman styli from Iulia Concordia, Italy
Salvemini, Filomena, E-mail: floriana.salvemini@fi.isc.cnr.it [Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, Sesto Fiorentino, FI (Italy); Università degli Studi di Firenze, Dipartimento di Scienze della Terra (Italy); Grazzi, Francesco [Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, Sesto Fiorentino, FI (Italy); Angelini, Ivana [Università degli Studi di Padova, Dipartimento di Geoscienze (Italy); Davydov, Vadim; Vontobel, Peter [Paul Scherrer Institut, SINQ Spallation Neutron Source, Villigen (Switzerland); Vigoni, Alberto [Dedalo s.n.c., Vicolo dei Conti 6, I-35122 Padua (Italy); Artioli, Gilberto [Università degli Studi di Padova, Dipartimento di Geoscienze (Italy); Zoppi, Marco [Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, Sesto Fiorentino, FI (Italy)
2014-05-01
Iulia Concordia is an important Roman settlement known for the production of iron objects and weapons during the Roman Empire. A huge number of well-preserved styli were found in the past century in the bed of an old channel. In order to shed light about the production processes used by Roman for stylus manufacturing, a neutron diffraction residual strain analysis was performed on the POLDI materials science diffractometer at the Paul Scherrer Institut in Switzerland. Here, we present results from our investigation conducted on 11 samples, allowing to define, in a non-invasive way, the residual strain map related to the ancient Roman working techniques. - Highlights: • We examined 11 Roman styli from the settlement of Iulia Concordia, Italy. • We performed a neutron diffraction residual strain analysis on POLDI at PSI (CH). • We identified the production processes used by Roman for stylus manufacturing. • We clarified the way and direction of working applied for different classes of styli.
A fast minimal residual solver for overlap fermions
Artan Borici; Alban Allkoci
2006-02-09
Computing quark propagators with overlap fermions requires the solution of a shifted unitary linear system. Jagels and Reichel have shown that for such systems it is possible to construct a minimal residual algorithm by short recurrences. The J\\"ulich-Wuppertal group have found this algorithm to be the fastest among overlap solvers. In this paper we present a three-term recurrence for the Arnoldi unitary process. Using the new recurrence we construct a minimal residual solver which is the fastest among all Krylov subspace algorithms considered so far for the overlap inversion.
Wood residuals find big uses in small pieces
Glenn, J.
1996-12-01
With a history of finding economic uses for leftovers, the wood industry explores sustainable options for creating higher value products. Years ago, companies saw the use - any use - of residues as a sound, economic business practice. Today, many companies are looking to go beyond low value products such as mulch, animal bedding and fuel, and market to higher value end users. Additionally, with so much material from the primary industries already accounted for, consumers of wood residue are in need of additional supply from sources such as secondary mills (furniture manufacturers, etc.), as wells as the C&D and MSW streams. This paper discusses these products and markets.
J. Katich; X. Qian; Y. X. Zhao; K. Allada; K. Aniol; J. R. M. Annand; T. Averett; F. Benmokhtar; W. Bertozzi; P. C. Bradshaw; P. Bosted; A. Camsonne; M. Canan; G. D. Cates; C. Chen; J. -P. Chen; W. Chen; K. Chirapatpimol; E. Chudakov; E. Cisbani; J. C. Cornejo; F. Cusanno; M. M. Dalton; W. Deconinck; C. W. de Jager; R. De Leo; X. Deng; A. Deur; H. Ding; P. A. M. Dolph; C. Dutta; D. Dutta; L. El Fassi; S. Frullani; H. Gao; F. Garibaldi; D. Gaskell; S. Gilad; R. Gilman; O. Glamazdin; S. Golge; L. Guo; D. Hamilton; O. Hansen; D. W. Higinbotham; T. Holmstrom; J. Huang; M. Huang; H. F. Ibrahim; M. Iodice; X. Jiang; G. Jin; M. K. Jones; A. Kelleher; W. Kim; A. Kolarkar; W. Korsch; J. J. LeRose; X. Li; Y. Li; R. Lindgren; N. Liyanage; E. Long; H. -J. Lu; D. J. Margaziotis; P. Markowitz; S. Marrone; D. McNulty; Z. -E. Meziani; R. Michaels; B. Moffit; C. Mu?oz Camacho; S. Nanda; A. Narayan; V. Nelyubin; B. Norum; Y. Oh; M. Osipenko; D. Parno; J. C. Peng; S. K. Phillips; M. Posik; A. J. R. Puckett; Y. Qiang; A. Rakhman; R. D. Ransome; S. Riordan; A. Saha; B. Sawatzky; E. Schulte; A. Shahinyan; M. H. Shabestari; S. Širca; S. Stepanyan; R. Subedi; V. Sulkosky; L. -G. Tang; A. Tobias; G. M. Urciuoli; I. Vilardi; K. Wang; Y. Wang; B. Wojtsekhowski; X. Yan; H. Yao; Y. Ye; Z. Ye; L. Yuan; X. Zhan; Y. Zhang; Y. -W. Zhang; B. Zhao; X. Zheng; L. Zhu; X. Zhu; X. Zong
2014-08-04
We report the first measurement of the target-normal single-spin asymmetry in deep-inelastic scattering from the inclusive reaction $^3$He$^{\\uparrow}\\left(e,e' \\right)X$ on a polarized $^3$He gas target. Assuming time-reversal invariance, this asymmetry is strictly zero in the Born approximation but can be non-zero if two-photon-exchange contributions are included. The experiment, conducted at Jefferson Lab using a 5.89 GeV electron beam, covers a range of $1.7 2$ GeV, which is non-zero at the $2.89\\sigma$ level. Our measured asymmetry agrees both in sign and magnitude with a two-photon-exchange model prediction that uses input from the Sivers transverse momentum distribution obtained from semi-inclusive deep-inelastic scattering.
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Stavretis, Shelby E.; Atanasov, Mihail; Podlesnyak, Andrey A.; Hunter, Seth C.; Neese, Frank; Xue, Zi-Ling
2015-10-02
Zero-field splitting (ZFS) parameters of nondeuterated metalloporphyrins [Fe(TPP)X] (X = F, Br, I; H2TPP = tetraphenylporphyrin) are determined by inelastic neutron scattering (INS). The ZFS values are D = 4.49(9) cm–1 for tetragonal polycrystalline [Fe(TPP)F], and D = 8.8(2) cm–1, E = 0.1(2) cm–1 and D = 13.4(6) cm–1, E = 0.3(6) cm–1 for monoclinic polycrystalline [Fe(TPP)Br] and [Fe(TPP)I], respectively. Along with our recent report of the ZFS value of D = 6.33(8) cm–1 for tetragonal polycrystalline [Fe(TPP)Cl], these data provide a rare, complete determination of ZFS parameters in a metalloporphyrin halide series. The electronic structure of [Fe(TPP)X] (X =more »F, Cl, Br, I) has been studied by multireference ab initio methods: the complete active space self-consistent field (CASSCF) and the N-electron valence perturbation theory (NEVPT2) with the aim of exploring the origin of the large and positive zero-field splitting D of the 6A1 ground state. D was calculated from wave functions of the electronic multiplets spanned by the d5 configuration of Fe(III) along with spin–orbit coupling accounted for by quasi degenerate perturbation theory. Results reproduce trends of D from inelastic neutron scattering data increasing in the order from F, Cl, Br, to I. A mapping of energy eigenvalues and eigenfunctions of the S = 3/2 excited states on ligand field theory was used to characterize the ?- and ?-antibonding effects decreasing from F to I. This is in agreement with similar results deduced from ab initio calculations on CrX63- complexes and also with the spectrochemical series showing a decrease of the ligand field in the same directions. A correlation is found between the increase of D and decrease of the ?- and ?-antibonding energies e?X (? = ?, ?) in the series from X = F to I. Analysis of this correlation using second-order perturbation theory expressions in terms of angular overlap parameters rationalizes the experimentally deduced trend. Furthermore, D parameters from CASSCF and NEVPT2 results have been calibrated against those from the INS data, yielding a predictive power of these approaches. Methods to improve the quantitative agreement between ab initio calculated and experimental D and spectroscopic transitions for high-spin Fe(III) complexes are proposed.« less
Benjamin Langhorst; Thomas M Lillo; Henry S Chu
2014-05-01
A statistics based ballistic test method is presented for use when comparing multiple groups of test articles of unknown relative ballistic perforation resistance. The method is intended to be more efficient than many traditional methods for research and development testing. To establish the validity of the method, it is employed in this study to compare test groups of known relative ballistic performance. Multiple groups of test articles were perforated using consistent projectiles and impact conditions. Test groups were made of rolled homogeneous armor (RHA) plates and differed in thickness. After perforation, each residual projectile was captured behind the target and its mass was measured. The residual masses measured for each test group were analyzed to provide ballistic performance rankings with associated confidence levels. When compared to traditional V50 methods, the residual mass (RM) method was found to require fewer test events and be more tolerant of variations in impact conditions.
On the Jeffrey-Kirwan residue of BCD-instantons
Satoshi Nakamura
2015-02-14
We apply the Jeffrey-Kirwan method to compute the multiple integrals for the $BCD$ type Nekrasov partition functions of four dimensional $\\mathcal{N}=2$ supersymmetric gauge theories. We construct a graphical distinction rule to determine which poles are surrounded by their integration cycles. We compute the instanton correction of the "$Sp(0)$" pure super-Yang-Mills theory and find that $Z^{Sp(0)}_{k}=(-1)^{k}(2^{k}k!\\varepsilon_{1}^{k}\\varepsilon_{2}^{k})^{-1}$ for $k\\le 8$, which resembles the formula $Z^{U(1)}_{k}=(k!\\varepsilon_{1}^{k}\\varepsilon_{2}^{k})^{-1}$ for the pure super-Yang-Mills theory with gauge group $U(1)$.
Leptonic Dirac CP Violation Predictions from Residual Discrete Symmetries
Girardi, I; Stuart, Alexander J; Titov, A V
2015-01-01
Assuming that the observed pattern of 3-neutrino mixing is related to the existence of a (lepton) flavour symmetry, corresponding to a non-Abelian discrete symmetry group $G_f$, and that $G_f$ is broken to specific residual symmetries $G_e$ and $G_\
Leptonic Dirac CP Violation Predictions from Residual Discrete Symmetries
I. Girardi; S. T. Petcov; Alexander J. Stuart; A. V. Titov
2015-09-08
Assuming that the observed pattern of 3-neutrino mixing is related to the existence of a (lepton) flavour symmetry, corresponding to a non-Abelian discrete symmetry group $G_f$, and that $G_f$ is broken to specific residual symmetries $G_e$ and $G_\
Modeling EU electricity market competition using the residual supply index
Swinand, Gregory; Scully, Derek; Ffoulkes, Stuart; Kessler, Brian
2010-11-15
An econometric approach to related hourly Residual Supply Index to price-cost margins in the major EU electricity generation markets suggests that market structure, as measured by the RSI, is a significant explanatory factor for markups, even when scarcity and other explanatory variables are included. (author)
Technology for treatment of salt residue stored at NPPs
Kobelev, A.P.; Savkin, A.E.; Sinjakin, O.G.; Kachalova, E.A.; Sorokoletova, A.N.; Nechaev, V.R. [SUE Moscow SIA Radon (Russian Federation)
2007-07-01
At Moscow SIA 'Radon', three (3) options for NPP salt residue treatment were developed and tested. Option 1 consists of dissolving the salt residue and subsequent treatment by ozonization, separation of the deposits formed from ozonization and selective cleaning by ferrocyanide sorbents. Option 2 consists of fusion of the salt residue, addition of glass-forming additives and melting of borosilicate glass in a melter such as a 'cold crucible'. Option 3 consists of dissolving the salt residue, oxidation of the solution obtained, removal of radionuclides by collectors and the separate handling of formed deposits and the solution. The deposits containing more than 99 % of the activity are directed to vitrification and the solution is directed either to a concentrates dryer or to cementation. The vitrified waste product is placed in repository for solid radioactive waste storage and the solidified product from the solution goes to an industrial waste disposal site or a repository specially developed at NPP sites for 'exempt waste' products by IAEA classification. (authors)
PRTAD: A DATABASE FOR PROTEIN RESIDUE TORSION ANGLE DISTRIBUTIONS
PRTAD: A DATABASE FOR PROTEIN RESIDUE TORSION ANGLE DISTRIBUTIONS By Xiaoyong Sun Di Wu RobertÂ0436 Phone: 612-624-6066 Fax: 612-626-7370 URL: http://www.ima.umn.edu #12;PRTAD: A Database for Protein@iastate.edu Abstract PRTAD is a dedicated database and structural bioinformatics system for protein analysis
COMMUNICATION Are Residues in a Protein Folding Nucleus
Dai, Yang
COMMUNICATION Are Residues in a Protein Folding Nucleus Evolutionarily Conserved? Yan Yuan Tseng is the hallmark of life. It is important to understand how protein folding and evolution influence each other in protein folding nucleus as measured by experi- mental f-value and selection pressure as measured by v
Effective Reverse Conversion in Residue Number System Processors
propose effective Residue Number System (RNS) to Weighted Number System conversion techniques with k being the num- ber of moduli. First, we introduce an RNS to MRC technique, which ad- dresses in an RNS to MRC with an asymptotic complexity, in terms of arithmetic operations, in the order of O
A PROBABILISTIC FINITE ELEMENT ANALYSIS OF RESIDUAL STRESS FORMATION
Grujicic, Mica
A PROBABILISTIC FINITE ELEMENT ANALYSIS OF RESIDUAL STRESS FORMATION IN SHRINK-FIT CERAMIC shrink fitting of the jacket over the lining is studied using a probabilistic finite element analysis structural analysis approach, known as the Advanced Mean Value (AMV) method, is used which enables
ROBUST RESIDUAL VIBRATION SUPPRESSION USING IIR DIGITAL FILTERS
Mavroidis, Constantinos
ROBUST RESIDUAL VIBRATION SUPPRESSION USING IIR DIGITAL FILTERS D. Economou a , C. Mavroidis b and I. Antoniadis a a National Technical University of Athens Department of Mechanical Engineering, 9 Rutgers University, The State University of New Jersey, Department of Mechanical and Aerospace Engineering
Residual Reconstruction for Block-Based Compressed Sensing of Video
Fowler, James E.
-sensing reconstruction for still images is adapted to video. Incorporating reconstruction from a residual arising from thresholding within the framework introduced in [2]. The term block-based CS (BCS) sampling with smooth] revealed that BCS-SPL reconstruction usually offers at least the same quality of recovery as does other
Removal of residual particulate matter from filter media
Almlie, Jay C; Miller, Stanley J
2014-11-11
A method for removing residual filter cakes that remain adhered to a filter after typical particulate removal methodologies have been employed, such as pulse-jet filter element cleaning, for all cleanable filters used for air pollution control, dust control, or powder control.
PeriodicitiesinSequenceResidueHydropathyandtheImplicationsonProteinFolds Nancy Zhang
Brutlag, Doug
1 PeriodicitiesinSequenceResidueHydropathyandtheImplicationsonProteinFolds Nancy Zhang March, 2000 algorithms is that there are hidden variables effecting the protein folding mechanism and explain why it is crucial to a protein's fold. In section III, I will explain how the Fourier transform
Braicovich, L. Minola, M.; Dellea, G.; Ghiringhelli, G.; Le Tacon, M.; Moretti Sala, M.; Morawe, C.; Peffen, J.-Ch.; Yakhou, F.; Brookes, N. B.; Supruangnet, R.
2014-11-15
Resonant Inelastic X-ray Scattering (RIXS) in the soft x-ray range is an element-specific energy-loss spectroscopy used to probe the electronic and magnetic excitations in strongly correlated solids. In the recent years, RIXS has been progressing very quickly in terms of energy resolution and understanding of the experimental results, but the interpretation of spectra could further improve, sometimes decisively, from a full knowledge of the polarization of incident and scattered photons. Here we present the first implementation, in a high resolution soft-RIXS spectrometer used to analyze the scattered radiation, of a device allowing the measurement of the degree of linear polarization. The system, based on a graded W/B{sub 4}C multilayer mirror installed in proximity of the CCD detector, has been installed on the AXES spectrometer at the ESRF (European Synchrotron Radiation Facility); it has been fully characterized and it has been used for a demonstration experiment at the Cu L{sub 3} edge on a high-T{sub c} superconducting cuprate. The loss in efficiency suffered by the spectrometer equipped with this test facility was a factor 17.5. We propose also a more advanced version, suitable for a routine use on the next generation of RIXS spectrometers and with an overall efficiency up to 10%.
Galbiati, Marta; Tatay, Sergio; Delprat, Sophie; Khanh, Hung Le; Deranlot, Cyrile; Collin, Sophie; Seneor, Pierre Mattana, Richard Petroff, Frédéric
2015-02-23
Molecular and organic spintronics is an emerging research field which combines the versatility of chemistry with the non-volatility of spintronics. Organic materials have already proved their potential as tunnel barriers (TBs) or spacers in spintronics devices showing sizable spin valve like magnetoresistance effects. In the last years, a large effort has been focused on the optimization of these organic spintronics devices. Insertion of a thin inorganic tunnel barrier (Al{sub 2}O{sub 3} or MgO) at the bottom ferromagnetic metal (FM)/organic interface seems to improve the spin transport efficiency. However, during the top FM electrode deposition, metal atoms are prone to diffuse through the organic layer and potentially short-circuit it. This may lead to the formation of a working but undesired FM/TB/FM magnetic tunnel junction where the organic plays no role. Indeed, establishing a protocol to demonstrate the effective spin dependent transport through the organic layer remains a key issue. Here, we focus on Co/Al{sub 2}O{sub 3}/Alq{sub 3}/Co junctions and show that combining magnetoresistance and inelastic electron tunnelling spectroscopy measurements one can sort out working “organic” and short-circuited junctions fabricated on the same wafer.
Lan, Tian [California Institute of Technology, Pasadena] [California Institute of Technology, Pasadena; Li, Chen [ORNL] [ORNL; Niedziela, Jennifer L [ORNL] [ORNL; Smith, Hillary [California Institute of Technology, Pasadena] [California Institute of Technology, Pasadena; Abernathy, Douglas L [ORNL] [ORNL; Rossman, George [California Institute of Technology, Pasadena] [California Institute of Technology, Pasadena; Fultz, B. [California Institute of Technology, Pasadena] [California Institute of Technology, Pasadena
2014-01-01
Inelastic neutron scattering measurements on silver oxide (Ag2O) with the cuprite structure were performed at temperatures from 40 to 400 K, and Fourier transform far-infrared spectra were measured from 100 to 300 K. The measured phonon densities of states and the infrared spectra showed unusually large energy shifts with temperature, and large linewidth broadenings. First principles molecular dynamics (MD) calculations were performed at various temperatures, successfully accounting for the negative thermal expansion (NTE) and local dynamics. Using the Fourier-transformed velocity autocorrelation method, the MD calculations reproduced the large anharmonic effects of Ag2O, and were in excellent agreement with the neutron scattering data. The quasiharmonic approximation (QHA) was less successful in accounting for much of the phonon behavior. The QHA could account for some of the NTE below 250 K, although not at higher temperatures. Strong anharmonic effects were found for both phonons and for the NTE. The lifetime broadenings of Ag2O were explained by anharmonic perturbation theory, which showed rich interactions between the Ag-dominated modes and the O-dominated modes in both up- and down-conversion processes.
V. E. Guiseppe; M. Devlin; S. R. Elliott; N. Fotiades; A. Hime; D. -M. Mei; R. O. Nelson; D. V. Perepelitsa
2009-09-24
Inelastic neutron scattering and reactions on Pb isotopes can result in gamma rays near the signature endpoint energy in a number of double-beta decay isotopes. In particular, there are gamma-ray transitions in Pb-206,207,208 that might produce energy deposits at the 76-Ge Q value in Ge detectors used for double-beta decay searches. The levels that produce these gamma rays can be excited by (n,n'gamma) or (n,xngamma) reactions, but the cross sections are small and previously unmeasured. This work uses the pulsed neutron beam at the Los Alamos Neutron Science Center to directly measure reactions of interest to double-beta decay experiments. The cross section on natural Pb to produce the 2041-keV gamma ray from Pb-206 is measured to be 3.6 +/- 0.7 (stat.) +/- 0.3 (syst.) mb at ~9.6 MeV. The cross section on natural Pb to produce the 3062-keV gamma ray from Pb-207 and Pb-208 is measured to be 3.9 +/- 0.8 (stat.) +/- 0.4 (syst.) mb at the same energy. We report cross sections or place upper limits on the cross sections for exciting some other levels in Pb that have transition energies corresponding to Q value in other double-beta decay isotopes.
Tolga Altinoluk; Néstor Armesto; Guillaume Beuf; Amir H. Rezaeian
2015-11-23
We study diffractive dijet production in deep inelastic scattering and real (and virtual) photon-hadron ($\\gamma^{(*)}$-h) collisions in the Color Glass Condensate formalism at leading order. We show that the diffractive dijet cross section is sensitive to the color-dipole orientation in the transverse plane, and is a good probe of possible correlations between the $q\\bar{q}$-dipole transverse separation vector $\\vec r$ and the dipole impact parameter $\\vec b$. We also investigate the diffractive dijet azimuthal angle correlations and $t$-distributions in $\\gamma^{(*)}$-h collisions and show that they are sensitive to gluon saturation effects in the small-$x$ region. In particular, we show that the $t$-distribution of diffractive dijet photo-production off a proton target exhibits a dip-type structure in the saturation region. This effect is similar to diffractive vector meson production. Besides, at variance with the inclusive case, the effect of saturation leads to stronger azimuthal correlations between the jets.
Altinoluk, Tolga; Beuf, Guillaume; Rezaeian, Amir H
2015-01-01
We study diffractive dijet production in deep inelastic scattering and real (and virtual) photon-hadron ($\\gamma^{(*)}$-h) collisions in the Color Glass Condensate formalism at leading order. We show that the diffractive dijet cross section is sensitive to the color-dipole orientation in the transverse plane, and is a good probe of possible correlations between the $q\\bar{q}$-dipole transverse separation vector $\\vec r$ and the dipole impact parameter $\\vec b$. We also investigate the diffractive dijet azimuthal angle correlations and $t$-distributions in $\\gamma^{(*)}$-h collisions and show that they are sensitive to gluon saturation effects in the small-$x$ region. In particular, we show that the $t$-distribution of diffractive dijet photo-production off a proton target exhibits a dip-type structure in the saturation region. This effect is similar to diffractive vector meson production. Besides, at variance with the inclusive case, the effect of saturation leads to stronger azimuthal correlations between th...
Snell, M.P.
1989-05-01
Differential cross sections were measured for Pi(+) and Pi(-) elastic scattering of Calcium 40 and Silicon 28 at incident pion energies ranging from 100 to 260 MeV at a scattering angle of 175 degs. Differential cross sections were also measured for Pi(+) and Pi(-) inelastic scattering to the 2(+), 1.78 MeV, 4(+), 4.62 MeV, and 3(-) 6.88 MeV states of 28Si at incident pion energies of 130, 180, and 226 MeV and scattering angles between 115 and 175{degrees} in 6{degrees} increments. The data are compared to previously obtained forward angle data through 120{degrees} and agree quite well. The data show a generally flat angular dependence for angles greater than 100{degrees}. Several theoretical codes are reviewed for their ability to predict large angle scattering. Coordinate-space and momentum-space models generally thought to be sufficient for predicting forward angle scattering have proved to be inappropriate for use at large angles. A new phenomenological delta-hole model, currently under modification, shows a greatly enhanced ability to predict scattering at back angles.
Residual Stresses in 21-6-9 Stainless Steel Warm Forgings
Everhart, Wesley A.; Lee, Jordan D.; Broecker, Daniel J.; Bartow, John P.; McQueen, Jamie M.; Switzner, Nathan T.; Neidt, Tod M.; Sisneros, Thomas A.; Brown, Donald W.
2012-11-14
Forging residual stresses are detrimental to the production and performance of derived machined parts due to machining distortions, corrosion drivers and fatigue crack drivers. Residual strains in a 21-6-9 stainless steel warm High Energy Rate Forging (HERF) were measured via neutron diffraction. The finite element analysis (FEA) method was used to predict the residual stresses that occur during forging and water quenching. The experimentally measured residual strains were used to calibrate simulations of the three-dimensional residual stress state of the forging. ABAQUS simulation tools predicted residual strains that tend to match with experimental results when varying yield strength is considered.
Heonoh Kim; Hee Jung Lee; Sang Min Lee; Han Seb Moon
2015-06-14
We present a highly efficient source for discrete frequency-entangled photon pairs based on spontaneous parametric down-conversion using 3rd order type-0 quasi-phase matching in a periodically poled MgO-doped stoichiometric LiTaO3 crystal pumped by a 355.66 nm laser. Correlated two-photon states were generated with automatic conservation of energy and momentum in two given spatial modes. These states have a wide spectral range, even under small variations in crystal temperature, which consequently results in higher discreteness. Frequency entanglement was confirmed by measuring two-photon quantum interference fringes without any spectral filtering.
Kim, Heonoh; Lee, Sang Min; Moon, Han Seb
2015-01-01
We present a highly efficient source for discrete frequency-entangled photon pairs based on spontaneous parametric down-conversion using 3rd order type-0 quasi-phase matching in a periodically poled MgO-doped stoichiometric LiTaO3 crystal pumped by a 355.66 nm laser. Correlated two-photon states were generated with automatic conservation of energy and momentum in two given spatial modes. These states have a wide spectral range, even under small variations in crystal temperature, which consequently results in higher discreteness. Frequency entanglement was confirmed by measuring two-photon quantum interference fringes without any spectral filtering.
Baring-Gould, E. I.; Robichaud, R.; McLain, K.
2005-05-01
This poster summarizes the analysis of the inclusion of wind-driven power generation technology into the existing diesel power plants at two U.S. Antarctic research stations, McMurdo and Amundsen-Scott South Pole Station. Staff at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) conducted the analysis. Available data were obtained on the wind resources, power plant conditions, load, and component cost. We then used NREL's Hybrid2 power system modeling software to analyze the potential and cost of using wind turbine generators at the two aforementioned facilities.
NONE
1995-03-01
The remedial action at the Northwest Transformer Mission/Pole site in Whatcom County, Washington, is nearly complete. The purpose of this document is to inform the public that the final two piles of excavated soil containing 53 and 70 parts per million Polychlorinated Biphenyls (PCBs), respectively, will be disposed of at a hazardous waste landfill rather than by incineration. This document also discusses the results of the Environmental Protection Agency (EPA) reassessment of the selected remedy for groundwater (which was and remains no further action) in light of sampling results and the apparent removal of the source of groundwater contamination during remediation.
DR. DEVIN MACKENZIE
2011-12-13
Progress over Phase II of DE-FG02-07ER86293 'Materials Degradation Analysis and Development to Enable Ultra Low Cost, Web-Processed White P-OLED for SSL' was initially rapid in terms of device performance improvements. We exceeded our device luminance lifetime goals for printed flexible white OLEDs as laid out in our project proposal. Our Phase II performance target was to demonstrate >1500 hours luminance lifetime at 100 Cd/m2 from a printed flexible device. We now have R&D devices well in excess of 8000 hrs lifetime at 100 Cd/m2, tested in air. We also were able to produce devices which met the voltage target of >1500 hours below 15V operation. After completing the initial performance milestones, we went on to focus on color-related degradation issues which were cited as important to commercialization of the technology by our manufacturing partners. We also put additional focus on cathode work as the active material development that occurred over the STTR time period required an adaptation of the cathode from the original cathode formulations which were developed based on previous generation active layer materials. We were able to improve compatibility of the cathode with some of the newer generation active layer materials and improve device yield and voltage behavior. An additional objective of the initial Phase II was to further develop the underlying manufacturing technology and real-life product specifications. This is a key requirement that must be met to ensure eventual commercialization of this DOE-funded technology. The link between commercial investment for full commercialization and R&D efforts in OLED solid State Lighting is often a large one. Add-Vision's lower cost, printed OLED manufacturing approach is an attraction, but close engagement with manufacturing partners and addressing customer specifications is a very important link. Manufacturing technology encompasses development of moisture reduction encapsulation technology, improved cost performance, and reductions in operating voltage through thinner and higher uniformity active device layers. We have now installed a pilot encapsulation system at AVI for controlled, high throughput lamination encapsulation of flexible OLEDs in a novel process. Along with this, we have developed, with our materials supply partners, adhesives, barrier films and other encapsulation materials and we are showing total air product lifetimes in the 2-4 years range from a process consistent with our throughput goals of {approx}1M device per month ({approx}30,000 sq. ft. of processed OLEDs). Within the last year of the project, we have been working to introduce the manufacturing improvements made in our LEP deposition and annealing process to our commercial partners. Based on the success of this, a pilot scale-up program was begun. During this process, Add-Vision was acquired by a strategic partner, in no small part, because of the promise of future success of the technology as evidenced by our commercial partners pilot scale-up plans. Overall, the performance, manufacturing and product work in this project has been successful. Additional analysis and device work at LBL has also shown a unique adhesion change with device bias stressing which may result from active layer polymer cross-linking during bias stressing of device. It was shown that even small bias stresses, as a fraction of a full device lifetime stress period, result in measurable chemical change in the device. Further work needs to be conducted to fully understand the chemical nature of this interaction. Elucidation of this effect would enable doped OLED formulation to be engineered to suppress this effect and further extend lifetimes and reduce voltage climb.
,"U.S. Total Sales of Residual Fuel Oil by End Use"
U.S. Energy Information Administration (EIA) Indexed Site
to Oil Company Consumers (Thousand Gallons)","U.S. Residual Fuel Oil SalesDeliveries to Electric Utility Consumers (Thousand Gallons)","U.S. Residual Fuel Oil SalesDeliveries to...
Ma,BonzongoandGao/UniversityofFlorida Characterization and Leachability of Coal Combustion Residues
Ma, Lena
Ma,BonzongoandGao/UniversityofFlorida Characterization and Leachability of Coal Combustion Residues an important solid waste in Florida, i.e., coal combustion residues (CCR) detailed in #2-4 of the current
Pfluger, Ron Atlan
1995-01-01
Critically refracted longitudinal (LCR) waves have been investigated as a possible technique for the evaluation of the residual stress gradients present in ductile iron castings. Residual stresses are likely to develop in ductile cast iron during...
Techniques for identifying long-range residue correlations in the fifth binding module of LDLR
Lin, Jennifer W
2006-01-01
The study of correlations between residues in distal regions of a protein structure may provide insights into the mechanism of protein folding. Such long-range correlations may exist between distant residues that are ...
Hall, Sharon J.
Making Photosynthetic Biofuel Renewable: Recovering Phosphorus from Residual Biomass J. M. Gifford to global warming. Biofuel from phototrophic microbes like algae and bacteria provides a viable substitute improves biofuel sustainability by refining phosphorus recycling. Biomass Production Residual Biomass
Hubble Residuals of Nearby SN Ia Are Correlated with Host Galaxy...
Office of Scientific and Technical Information (OSTI)
Journal Article: Hubble Residuals of Nearby SN Ia Are Correlated with Host Galaxy Masses Citation Details In-Document Search Title: Hubble Residuals of Nearby SN Ia Are Correlated...
Viscosity stabilization of SRC residual oil. Final technical report
Tewari, K.C.
1984-05-01
The use of SRC residual oils for No. 6 Fuel Oil substitutes has been proposed. The oils exhibit viscosity characteristics at elevated temperatures that allow this substitution with only minor modifications to the existing fuel oil infrastructure. However, loss of low-boiling materials causes an increase in the viscosity of the residual oils that is greater than expected from concentration changes. A process has been developed that minimizes the loss of volatiles and thus maintains the viscosity of these materials. The use of an additive (water, phenol, or an SRC light oil cut rich in low-boiling phenols in amounts up to 2.0 wt %) accomplishes this and hence stabilizes the pumping and atomizing characteristics for an extended period. During the course of the work, the components of the volatiles lost were identified and the viscosity change due to this loss was quantified. 3 references, 6 figures, 9 tables.
Residuals in steel products -- Impacts on properties and measures to minimize them
Emi, Toshihiko [Tohoku Univ., Sendai (Japan). Inst. for Advanced Materials Processing; Wijk, O. [Royal Inst. of Tech., Stockholm (Sweden). Dept. of Process Metallurgy
1996-12-31
The effect of major residual elements on the properties of steel products is summarized. Measures to minimize these elements are discussed including the pretreatment of raw materials, innovative refining processes and environmental issues. This paper addresses (1) scrap situation, (2) upper limit of residual concentrations acceptable for processing and product quality, (3) possible means to reduce the residuals, and (4) consideration on the practicable measures to solve the residuals problem in a systematic way. 52 refs.