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


1

2nd conference on Intense field- Short Wavelength Atomic and...  

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

nd conference on Intense field- Short Wavelength Atomic and Molecular Processes - ISWAMP2 2nd conference on Intense field- Short Wavelength Atomic and Molecular Processes - ISWAMP2...

2

Short wavelength laser  

DOE Patents [OSTI]

A short wavelength laser is provided that is driven by conventional-laser pulses. A multiplicity of panels, mounted on substrates, are supported in two separated and alternately staggered facing and parallel arrays disposed along an approximately linear path. When the panels are illuminated by the conventional-laser pulses, single pass EUV or soft x-ray laser pulses are produced.

Hagelstein, P.L.

1984-06-25T23:59:59.000Z

3

Short wavelength laser  

DOE Patents [OSTI]

A short wavelength laser (28) is provided that is driven by conventional-laser pulses (30, 31). A multiplicity of panels (32), mounted on substrates (34), are supported in two separated and alternately staggered facing and parallel arrays disposed along an approximately linear path (42). When the panels (32) are illuminated by the conventional-laser pulses (30, 31), single pass EUV or soft x-ray laser pulses (44, 46) are produced.

Hagelstein, Peter L. (Livermore, CA)

1986-01-01T23:59:59.000Z

4

Modulation compression for short wavelength harmonic generation  

E-Print Network [OSTI]

Wavelength Harmonic Generation Ji Qiang Lawrence Berkeleyform a basis for fourth generation light source. Currently,e?ciency was proposed for generation of short wavelength

Qiang, J.

2010-01-01T23:59:59.000Z

5

Optical Detection in Ultrafast Short Wavelength Science  

SciTech Connect (OSTI)

A new approach to coherent detection of ionising radiation is briefly motivated and recounted. The approach involves optical scattering of coherent light fields by colour centres in transparent solids. It has significant potential for diffractive imaging applications that require high detection dynamic range from pulsed high brilliance short wavelength sources. It also motivates new incarnations of Bragg's X-ray microscope for pump-probe studies of ultrafast molecular structure-dynamics.

Fullagar, Wilfred K.; Hall, Chris J. [School of Physics, Monash University, Victoria 3800 (Australia); Monash Centre for Synchrotron Science, Monash University, Victoria 3800 (Australia); Centre of Excellence for Coherent X-ray Science, School of Physics, University of Melbourne, Victoria, 3010 (Australia)

2010-06-23T23:59:59.000Z

6

Electricity and short wavelength radiation generator  

DOE Patents [OSTI]

Methods and associated apparati for use of collisions of high energy atoms and ions of He, Ne, or Ar with themselves or with high energy neutrons to produce short wavelength radiation (lambda approx. = 840-1300 A) that may be utilized to produce cathode-anode currents or photovoltaic currents.

George, E.V.

1985-08-26T23:59:59.000Z

7

Deformable mirror for short wavelength applications  

DOE Patents [OSTI]

A deformable mirror compatible with short wavelength (extreme ultraviolet) radiation that can be precisely controlled to nanometer and subnanometer accuracy is described. Actuators are coupled between a reaction plate and a face plate which has a reflective coating. A control system adjusts the voltage supplied to the actuators; by coordinating the voltages supplied to the actuators, the reflective surface of the mirror can be deformed to correct for dimensional errors in the mirror or to produce a desired contour.

Chapman, Henry N. (2417 Kilkare Rd., Sunol, CA 94586); Sweeney, Donald W. (5020 Canyon Crest Dr., San Ramon, CA 94583)

1999-01-01T23:59:59.000Z

8

Source of coherent short wavelength radiation  

DOE Patents [OSTI]

An apparatus for producing coherent radiation ranging from X-rays to the far ultraviolet (i.e., 1 Kev to 10 eV) utilizing the Compton scattering effect. A photon beam from a laser is scattered on a high energy electron bunch from a pulse power linac. The short wavelength radiation produced by such scattering has sufficient intensity and spatial coherence for use in high resolution applications such as microscopy.

Villa, Francesco (Alameda, CA)

1990-01-01T23:59:59.000Z

9

Asymptotic description of radially localized short wavelength eigenmodes in a tokamak  

E-Print Network [OSTI]

Asymptotic description of radially localized short wavelength eigenmodes in a tokamak G. V-driven instabilities in a tokamak. It is shown that eigenmodes of the ballooning type are generated by toroidally

10

Excellent optical thermometry based on short-wavelength upconversion emissions in Er3  

E-Print Network [OSTI]

Excellent optical thermometry based on short-wavelength upconversion emissions in Er3 Yb3 codoped (Doc. ID 175753); published November 22, 2012 Excited by a 980 nm laser, upconversion emissions coupled levels, which can emit the shortest wavelength emissions for optical thermometry known so far

Cao, Wenwu

11

Low work function surface layers produced by laser ablation using short-wavelength photons  

DOE Patents [OSTI]

Short-wavelength photons are used to ablate material from a low work function target onto a suitable substrate. The short-wavelength photons are at or below visible wavelength. The elemental composition of the deposit is controlled by the composition of the target and the gaseous environment in which the ablation process is performed. The process is carried out in a deposition chamber to which a short-wavelength laser is mounted and which includes a substrate holder which can be rotated, tilted, heated, or cooled. The target material is mounted onto a holder that spins the target during laser ablation. In addition, the deposition chamber is provided with a vacuum pump, an external gas supply with atomizer and radical generator, a gas generator for producing a flow of molecules on the substrate, and a substrate cleaning device, such as an ion gun. The substrate can be rotated and tilted, for example, whereby only the tip of an emitter can be coated with a low work function material.

Balooch, Mehdi (Berkeley, CA); Dinh, Long N. (Concord, CA); Siekhaus, Wigbert J. (Berkeley, CA)

2000-01-01T23:59:59.000Z

12

Ultra-high accuracy optical testing: creating diffraction-limited short-wavelength optical systems  

E-Print Network [OSTI]

Schwarzschild wavelength NA Engineering Micro Exposure Test Stand ( ETS ) Tool ( MET ) 13.4 nm 108.5 cm magnification # of mirrors

2005-01-01T23:59:59.000Z

13

Effect of electron-cyclotron resonance heating conditions on the local parameters of short-wavelength plasma turbulence in the L-2M stellarator  

Science Journals Connector (OSTI)

Changes in the energy spectra of short-wavelength (k s ? 35 cm?1) plasma density fluctuations in the local region of the plasma column (r/a = 0.5–0.6) of the L-...

G. M. Batanov; V. D. Borzosekov; L. V. Kolik; D. V. Malakhov…

2014-04-01T23:59:59.000Z

14

Quantum key distribution system in standard telecommunications fiber using a short wavelength single-photon source  

E-Print Network [OSTI]

A demonstration of the principles of quantum key distribution is performed using a single-photon source in a proof of concept test-bed over a distance of 2 km in standard telecommunications optical fiber. The single-photon source was an optically-pumped quantum dot in a microcavity emitting at a wavelength of 895 nm. Characterization of the quantum key distribution parameters was performed at a range of different optical excitation powers. An investigation of the effect of varying the optical excitation power of the quantum dot microcavity on the quantum bit error rate and cryptographic key exchange rate of the system are presented.

R. J. Collins; P. J. Clarke; V. Fernandez; K. J. Gordon; M. N. Makhonin; J. A. Timpson; A. Tahraoui; M. Hopkinson; A. M. Fox; M. S. Skolnick; G. S. Buller

2010-04-27T23:59:59.000Z

15

E-Print Network 3.0 - averaged gravity fields Sample Search Results  

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

field while the short wavelength components... with wavelengths as short as 25 km. marine gravity ... Source: Sandwell, David T. - Institute of Geophysics and Planetary...

16

The Shoelace Antenna : a device to induce short-wavelength fluctuations in the edge plasma of the Alcator C-Mod Tokamak  

E-Print Network [OSTI]

The "Shoelace" antenna is a unique device built to induce short-wavelength fluctuations in the edge plasma of the Alcator C-Mod tokamak, at a wave number and in the frequency range associated with the Quasi-Coherent Mode ...

Golfinopoulos, Theodore

2014-01-01T23:59:59.000Z

17

External excitation of a short-wavelength fluctuation in the Alcator C-Mod edge plasma and its relationship to the quasi-coherent mode  

E-Print Network [OSTI]

A novel “Shoelace” antenna has been used to inductively excite a short-wavelength edge fluctuation in a tokamak boundary layer for the first time. The principal design parameters, k[subscript ?] = 1.5 ± 0.1 cm[superscript ...

Parker, R. R.

18

A 50-MeV mm-wave electron linear accelerator system for production of tunable short wavelength synchrotron radiation  

SciTech Connect (OSTI)

The Advanced Photon Source (APS) at Argonne in collaboration with the University of Illinois at Chicago and the University of Wisconsin at Madison is developing a new millimeter wavelength, 50-MeV electron linear accelerator system for production of coherent tunable wavelength synchrotron radiation. Modern micromachining techniques based on deep etch x-ray lithography, LIGA (Lithografie, Galvanoformung, Abformung), capable of producing high-aspect ratio structures are being considered for the fabrication of the accelerating components.

Nassiri, A.; Kustom, R.L.; Mills, F.E.; Kang, Y.W.; Matthews, P.J.; Grudzien, D.; Song, J.; Horan, D. [Argonne National Lab., IL (United States). Advanced Photon Source Accelerator Systems Div.; Feinerman, A.D.; Willke, T.L. [Argonne National Lab., IL (United States). Advanced Photon Source Accelerator Systems Div.]|[Univ. of Illinois, Chicago, IL (United States). Dept. of Electrical Engineering and Computer Science; Henke, H. [Argonne National Lab., IL (United States). Advanced Photon Source Accelerator Systems Div.]|[Technische Univ., Berlin (Germany). Inst. fuer Theoretische Electrotechnik

1993-12-31T23:59:59.000Z

19

Phase-field theory of brine entrapment in sea ice: Short-time frozen microstructures  

E-Print Network [OSTI]

We analyze the early phase of brine entrapment in sea ice, using a phase field model. This model for a first-order phase transition couples non-conserved order parameter kinetics to salt diffusion. The evolution equations are derived from a Landau-Ginzburg order parameter gradient dynamics together with salinity conservation. The numerical solution of model equations by an exponential time differencing scheme describes the time evolution of phase separation between liquid water with high salinity and the ice phase with low salinity. The numerical solution in one and two dimensions indicates the formation of one dominant wavelength which sets the length scale of short-time frozen structures. A stability analysis provides the phase diagram in terms of two Landau parameters. It is distinguished an uniform ice phase, a homogeneous liquid saline water solution and a phase where solidification structures can be formed. The Landau parameters are extracted from the supercooling and superheating as well as the freezin...

Thoms, Silke; Morawetz, Klaus

2014-01-01T23:59:59.000Z

20

Backscattering of gyrotron radiation and short-wavelength turbulence during electron cyclotron resonance plasma heating in the L-2M stellarator  

SciTech Connect (OSTI)

Backscattering of gyrotron radiation ({theta} = {pi}) by short-wavelength density fluctuations (k{sub Up-Tack} = 30 cm{sup -1}) in the plasma of the L-2M stellarator was studied under conditions of electron cyclotron resonance (ECR) plasma heating at the second harmonic of the electron gyrofrequency (75 GHz). The scattering of the O-wave emerging due to the splitting of the linearly polarized gyrotron radiation into the X- and O-waves was analyzed. The signal obtained after homodyne detection of scattered radiation is a result of interference of the reference signal, the quasi-steady component, and the fast oscillating component. The coefficients of reflection of the quasi-steady component, R{sub =}{sup 2}(Y), and fast oscillating component, R{sub {approx}}{sup 2}(Y), of scattered radiation are estimated. The growth of the R{sub {approx}}{sup 2}(Y) coefficient from 3.7 Multiplication-Sign 10{sup -4} to 5.2 Multiplication-Sign 10{sup -4} with increasing ECR heating power from 190 to 430 kW is found to correlate with the decrease in the energy lifetime from 1.9 to 1.46 ms. The relative density of short-wavelength fluctuations is estimated to be Left-Pointing-Angle-Bracket n{sub {approx}}{sup 2} Right-Pointing-Angle-Bracket / Left-Pointing-Angle-Bracket n{sub e}{sup 2} Right-Pointing-Angle-Bracket = 3 Multiplication-Sign 10{sup -7}. It is shown that the frequencies of short-wavelength fluctuations are in the range 10-150 kHz. The recorded short-wavelength fluctuations can be interpreted as structural turbulence, the energy of which comprises {approx}10% of the total fluctuations energy. Simulations of transport processes show that neoclassical heat fluxes are much smaller than anomalous ones. It is suggested that short-wavelength turbulence plays a decisive role in the anomalous heat transport.

Batanov, G. M.; Borzosekov, V. D., E-mail: tinborz@gmail.com; Kovrizhnykh, L. M.; Kolik, L. V.; Konchekov, E. M.; Malakhov, D. V.; Petrov, A. E.; Sarksyan, K. A.; Skvortsova, N. N.; Stepakhin, V. D.; Kharchev, N. K. [Russian Academy of Sciences, Prokhorov General Physics Institute (Russian Federation)

2013-06-15T23:59:59.000Z

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


21

A Wavelength and Spectrum Measurement of an Extremely-Short-External-Cavity Laser Diode by Precisely Controlling Slider Flying Height  

Science Journals Connector (OSTI)

In this paper we propose a measurement method that uses a laser diode (LD) attached to a flying slider and a semi-transparent rotating disk mirror for an extremely-short-external-cavity...

Hiroo Ukita; Yoshinobu Karaki

2004-05-01T23:59:59.000Z

22

Investigation of the effect of bilayer membrane structures and fluctuation amplitudes on SANS/SAXS profile for short membrane wavelength  

SciTech Connect (OSTI)

The effect of bilayer membrane structures and fluctuation amplitudes on small angle neutron scattering (SANS) and small angle X-ray scattering (SAXS) profile is investigated based on harmonic motions of the surfactant bilayers with bending as well as thickness fluctuation motions. In this study we consider the case in which the wavelength of the bilayer membrane is shorter than the thickness of the membrane. We find that the thickness of the surfactant bilayer membrane, d{sub m}, affects both q{sub dip} and q{sub peak} of I(q,0) profile, and that the fluctuation amplitude, a, of the membrane changes the peak of I(q,0). A simple formula is derived to estimate the thickness of the bilayer based on the q{sub dip} of the profile obtained from the simulation. The resulting estimates of the thickness of the bilayer with harmonic motion showed accuracy within 1%. Moreover, the bilayer thicknesses estimated from the proposed formula show an excellent agreement with the SANS and SAXS experimental results available in the literatures. We also propose a curve fit model, which describes the relationship between the fluctuation amplitude and the normalized q{sub peak} ratio. The present results show the feasibility of the simple formula to estimate the fluctuation amplitude based on the SANS and SAXS profiles.

Lee, Victor; Hawa, Takumi [School of Aerospace and Mechanical Engineering, The University of Oklahoma, Norman, Oklahoma 73019 (United States)] [School of Aerospace and Mechanical Engineering, The University of Oklahoma, Norman, Oklahoma 73019 (United States)

2013-09-28T23:59:59.000Z

23

CANDELS MULTI-WAVELENGTH CATALOGS: SOURCE DETECTION AND PHOTOMETRY IN THE GOODS-SOUTH FIELD  

SciTech Connect (OSTI)

We present a UV to mid-infrared multi-wavelength catalog in the CANDELS/GOODS-S field, combining the newly obtained CANDELS HST/WFC3 F105W, F125W, and F160W data with existing public data. The catalog is based on source detection in the WFC3 F160W band. The F160W mosaic includes the data from CANDELS deep and wide observations as well as previous ERS and HUDF09 programs. The mosaic reaches a 5{sigma} limiting depth (within an aperture of radius 0.''17) of 27.4, 28.2, and 29.7 AB for CANDELS wide, deep, and HUDF regions, respectively. The catalog contains 34,930 sources with the representative 50% completeness reaching 25.9, 26.6, and 28.1 AB in the F160W band for the three regions. In addition to WFC3 bands, the catalog also includes data from UV (U band from both CTIO/MOSAIC and VLT/VIMOS), optical (HST/ACS F435W, F606W, F775W, F814W, and F850LP), and infrared (HST/WFC3 F098M, VLT/ISAAC Ks, VLT/HAWK-I Ks, and Spitzer/IRAC 3.6, 4.5, 5.8, 8.0 {mu}m) observations. The catalog is validated via stellar colors, comparison with other published catalogs, zero-point offsets determined from the best-fit templates of the spectral energy distribution of spectroscopically observed objects, and the accuracy of photometric redshifts. The catalog is able to detect unreddened star-forming (passive) galaxies with stellar mass of 10{sup 10} M{sub Sun} at a 50% completeness level to z {approx} 3.4 (2.8), 4.6 (3.2), and 7.0 (4.2) in the three regions. As an example of application, the catalog is used to select both star-forming and passive galaxies at z {approx} 2-4 via the Balmer break. It is also used to study the color-magnitude diagram of galaxies at 0 < z < 4.

Guo Yicheng; Barro, Guillermo; Faber, Sandra M.; Koo, David C. [UCO/Lick Observatory, Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA (United States); Ferguson, Henry C.; Dahlen, Tomas; Huang, Kuang-Han; Koekemoer, Anton M. [Space Telescope Science Institute, Baltimore, MD (United States); Giavalisco, Mauro [Department of Astronomy, University of Massachusetts, Amherst, MA (United States); Willner, S. P.; Ashby, Matthew L. N. [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States); Donley, Jennifer L. [Los Alamos National Laboratory, Los Alamos, NM (United States); Fontana, Adriano; Galametz, Audrey; Grazian, Andrea [INAF-Osservatorio di Roma, I-00040 Monteporzio (Italy); Kocevski, Dale D. [Department of Physics and Astronomy, University of Kentucky, Lexington, KY (United States); McGrath, Elizabeth J. [Department of Physics and Astronomy, Colby College, Waterville, ME (United States); Peth, Michael [Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD (United States); Salvato, Mara; Wuyts, Stijn, E-mail: ycguo@ucolick.org [Max-Planck-Institut fur Extraterrestrische Physik, D-85741 Garching bei Munchen (Germany); and others

2013-08-15T23:59:59.000Z

24

Phase-field theory of brine entrapment in sea ice: Short-time frozen microstructures  

E-Print Network [OSTI]

We analyze the early phase of brine entrapment in sea ice, using a phase field model. This model for a first-order phase transition couples non-conserved order parameter kinetics to salt diffusion. The evolution equations are derived from a Landau-Ginzburg order parameter gradient dynamics together with salinity conservation. The numerical solution of model equations by an exponential time differencing scheme describes the time evolution of phase separation between liquid water with high salinity and the ice phase with low salinity. The numerical solution in one and two dimensions indicates the formation of one dominant wavelength which sets the length scale of short-time frozen structures. A stability analysis provides the phase diagram in terms of two Landau parameters. It is distinguished an uniform ice phase, a homogeneous liquid saline water solution and a phase where solidification structures can be formed. The Landau parameters are extracted from the supercooling and superheating as well as the freezing point temperature of water. With the help of realistic parameters the distribution of brine inclusions is calculated and found in agreement with the measured samples. The size of the ice domains separating regions of concentrated seawater depends on salinity and temperature and corresponds to the size of sea ice platelets obtained from a morphological stability analysis for the solidification of salt water.

Silke Thoms; Bernd Kutschan; Klaus Morawetz

2014-05-01T23:59:59.000Z

25

Magnetic Fields in Gamma-Ray Bursts: A Short Review  

E-Print Network [OSTI]

Magnetic fields play a crucial role in the physics of Gamma-Ray Bursts (GRBs). Strong observational evidence indicates that the observed afterglow and most likely the prompt emission arise from synchrotron emission. It is possible that Poynting flux plays an important or even dominant role in the relativistic outflow from the inner engine, but like in other astronomical relativistic jets this suggestion is controversial. Finally, it is likely that magnetic fields larger than $10^{15}$ G occur within GRBs' inner engines and contribute to the acceleration and collimation of the relativistic jets. I review here the GRB fireball model and discuss the role that magnetic fields play in its various components. I suggest that the early afterglow, that reflects the initial interaction of the relativistic jet with its surrounding matter is the best available tool to explore the nature of relativistic outflow in astronomical relativistic jets.

Tsvi Piran

2005-03-02T23:59:59.000Z

26

A field study evaluation of short-term refined Gaussian dispersion models  

SciTech Connect (OSTI)

A tracer study was conducted at the Duke Forest Site in Chapel Hill, North Carolina in January, 1995 to evaluate the ability of three short-term refined Gaussian dispersion models to predict the fate of volume source emissions under field study conditions. Study participants included the American Petroleum Institute (API), the US Environmental Protection Agency (EPA), the US Department of Energy (DOE), the University of North Carolina at Chapel Hill (UNC), and private consulting firms. The models evaluated were Industrial Source Complex--Short Term versions 2 and 3 (ISC2, ISC3) and the American Meteorological Society (AMS) Environmental Protection Agency (EPA) Regulatory Model Improvement Committee (AERMIC) model, AERMOD. All three models are based on the steady-state Gaussian plume dispersion equation, which predicts concentrations at downwind receptor locations when integrated over the distance between the source and receptor. Chemicals were released at known rates and measurements were taken at various points in the study field using Tedlar bag point sampling and open-path Fourier Transform infrared (OP-FTIR) monitoring. The study found that ISC and AERMOD underpredicted the measured concentrations for each dataset collected in the field study. ISC and AERMOD each underpredicted the OPFTIR dataset by a factor of approximately 1.6. ISC underpredicted the Tedlar{reg_sign} dataset by approximately 2.1, while AERMOD underpredicted by a factor of approximately 2.6. Regardless of source configuration or measurement technique used, under-prediction with respect to the measured concentration was consistently observed. This indicates that safety factors or other corrections may be necessary in predicting contaminant concentrations over the distances examined in this study, i.e., in the near field of less than 200 meters.

Piper, A.

1996-12-31T23:59:59.000Z

27

Application of short-radius horizontal boreholes in the naturally fractured Yates field  

SciTech Connect (OSTI)

This paper discusses the performance and simulation of short-radius horizontal boreholes being used in the Marathon-operated Yates field Unit in west Texas to minimize drawdown and therefore to reduce gas and water coning in a thin oil column. Yates is a very prolific field with extensive fracturing and high-quality reservoir rock. Superimposed on a high-density orthogonal fracture network are widely spaced regional joints with a strong directional tendency. Major questions are how these directional joints affect the horizontal-well performance and whether wells should be drilled parallel or perpendicular to the joints. Dual-permeability reservoir simulation studies were performed to study optimum orientation of the borehole with respect to the natural fracture network. Additionally, optimum well-completion elevation was studied. Forty-six vertical wells have been recompleted as short-radius horizontal boreholes since 1986. The large productivity increase of the horizontal boreholes compared with the previous vertical completions indicates that the wells are intersecting the regional joints.

Gilman, J.R.; Rothkopf, B.W. (Marathon Petroleum Technology Center, Littleton, CO (United States)); Bowzer, J.L. (Marathon Oil Co., Midland, TX (United States))

1995-02-01T23:59:59.000Z

28

Short-term electricity dispatch optimization of Ertan hydropower plant based on data by field tests  

Science Journals Connector (OSTI)

A short-term electricity dispatch optimization program required by the Ertan hydropower plant is developed to maximize hydropower production. Three field tests in various operating heads were carried out in the period of May 2009 to March 2010. Based on data of five test conditions three operating zones for units in various operating heads were proposed. A short-term electricity dispatch optimization model was developed with physical and operational constraints. Unit commitment strategy was put forward for model solution in which unit statuses and output statuses were classified. The strategy aimed at formulating better unit commitment plan according to forecasted load demand ancillary service requirements and initial operating status. The model and the strategy were verified by real cases. The results show that the optimal load distribution among units at every interval can be easily solved by the genetic algorithm based on a fixed unit commitment plan. Schedules are developed with higher average generation efficiency. Units can also be scheduled to operate for a less time within the rough zone and the second feasible zone. The proposed method is already operational for dispatch engineers of the Ertan hydropower plant to determine half-hourly schedules in one day.

Chao Ma; Haijun Wang; Jijian Lian

2011-01-01T23:59:59.000Z

29

Electron acceleration by an intense short pulse laser in a static magnetic field in vacuum K. P. Singh*  

E-Print Network [OSTI]

Electron acceleration by an intense short pulse laser in a static magnetic field in vacuum K. P 2003; revised manuscript received 22 December 2003; published 28 May 2004) Electron acceleration the peak of the pulse interacts with the electron and the direction of the static magnetic field is taken

Roy, Subrata

30

Magnetic Fields in Gamma-Ray Bursts: A Short Racah Institute for Physics, The Hebrew University, Jerusalem, 91904 Israel  

E-Print Network [OSTI]

Magnetic Fields in Gamma-Ray Bursts: A Short Overview Tsvi Piran Racah Institute for Physics Abstract. Magnetic fields play a crucial role in the physics of Gamma-Ray Bursts (GRBs). Strong thirty years, after the discovery of Gamma-Ray bursts (GRBs) we have now a reasonable GRB model

Jensen, Grant J.

31

Short-Term Energy Outlook Supplement: Status of Libyan Loading Ports and Oil and Natural Gas Fields  

Gasoline and Diesel Fuel Update (EIA)

Short-Term Energy Outlook Supplement: Short-Term Energy Outlook Supplement: Status of Libyan Loading Ports and Oil and Natural Gas Fields Tuesday, September 10, 2013, 10:00AM EST Overview During July and August 2013, protests at major oil loading ports in the central-eastern region of Libya forced the complete or partial shut-in of oil fields linked to the ports. As a result of protests at ports and at some oil fields, crude oil production fell to 1.0 million barrels per day (bbl/d) in July and 600,000 bbl/d in August, although the production level at the end of August was far lower. At the end of August, an armed group blocked pipelines that connect the El Sharara and El Feel (Elephant) fields to the Zawiya and Mellitah export terminals, respectively, forcing the shutdown of those fields. El Sharara had been

32

Characteristics of Short Wavelength Compressional Alfven Eigenmodes  

SciTech Connect (OSTI)

Most Alfvenic activity in the frequency range between Toroidal Alfven Eigenmodes and roughly one half of the ion cyclotron frequency on NSTX [M. Ono, et al., Nucl. Fusion 40 (2000) 557], that is, approximately 0.3 MHz up to ? 1.2 MHz, are modes propagating counter to the neutral beam ions. These have been modeled as Compressional and Global Alfven Eigenmodes (CAE and GAE) and are excited through a Doppler-shifted cyclotron resonance with the beam ions. There is also a class of co-propagating modes at higher frequency than the counter-propagating CAE and GAE. These modes have been identified as CAE, and are seen mostly in the company of a low frequency, n=1 kink-like mode. In this paper we present measurements of the spectrum of these high frequency CAE (hfCAE), and their mode structure. We compare those measurements to a simple model of CAE and present evidence of a curious non-linear coupling of the hfCAE and the low frequency kink-like mode.

Fredrickson, E D; Podesta, M; Bortolon, A; Crocker, N A; Gerhardt, S P; Bell, R E; Diallo, A; LeBlanc, B; Levinton, F M

2012-12-19T23:59:59.000Z

33

Coherence techniques at extreme ultraviolet wavelengths  

SciTech Connect (OSTI)

The renaissance of Extreme Ultraviolet (EUV) and soft x-ray (SXR) optics in recent years is mainly driven by the desire of printing and observing ever smaller features, as in lithography and microscopy. This attribute is complemented by the unique opportunity for element specific identification presented by the large number of atomic resonances, essentially for all materials in this range of photon energies. Together, these have driven the need for new short-wavelength radiation sources (e.g. third generation synchrotron radiation facilities), and novel optical components, that in turn permit new research in areas that have not yet been fully explored. This dissertation is directed towards advancing this new field by contributing to the characterization of spatial coherence properties of undulator radiation and, for the first time, introducing Fourier optical elements to this short-wavelength spectral region. The first experiment in this dissertation uses the Thompson-Wolf two-pinhole method to characterize the spatial coherence properties of the undulator radiation at Beamline 12 of the Advanced Light Source. High spatial coherence EUV radiation is demonstrated with appropriate spatial filtering. The effects of small vertical source size and beamline apertures are observed. The difference in the measured horizontal and vertical coherence profile evokes further theoretical studies on coherence propagation of an EUV undulator beamline. A numerical simulation based on the Huygens-Fresnel principle is performed.

Chang, Chang

2002-10-01T23:59:59.000Z

34

Electric field Induced Patterns in Soft Visco-elastic films: From Long Waves of Viscous Liquids to Short Waves of Elastic Solids  

E-Print Network [OSTI]

We show that the electric field driven surface instability of visco-elastic films has two distinct regimes: (1) The visco-elastic films behaving like a liquid display long wavelengths governed by applied voltage and surface tension, independent of its elastic storage and viscous loss moduli, and (2) the films behaving like a solid require a threshold voltage for the instability whose wavelength always scales as ~ 4 x film thickness, independent of its surface tension, applied voltage, loss and storage moduli. Wavelength in a narrow transition zone between these regimes depends on the storage modulus.

N. Arun; Ashutosh Sharma; Partho S. G. Pattader; Indrani Banerjee; Hemant M. Dixit; K. S. Narayan

2009-06-02T23:59:59.000Z

35

Critical wavelength for river meandering  

Science Journals Connector (OSTI)

A fully nonlinear modal analysis identifies a critical centerline wave number qc for river meandering that separates long-wavelength bends, which grow to cutoff, from short-wavelength bends, which decay. Exact, numerical, and approximate analytical results for qc rely on the Ikeda, Parker, and Sawai [J. Fluid Mech. 112, 363 (1981)] model, supplemented by dynamical equations that govern the river migration and length. Predictions also include upvalley bend migration at long times and a peak in lateral migration rates at intermediate times. Experimental tests are suggested.

Boyd F. Edwards and Duane H. Smith

2001-03-28T23:59:59.000Z

36

Manipulating Short-Lived Isotopes with Inhomogeneous RF-Fields T. Li and H. A. Schuessler  

E-Print Network [OSTI]

physics [6]. Radio frequency quadrupole accelerators (RFQ) [7] have been employed in accelerator physics buffer gas cooling of short-lived isotopes being produced on-line at nuclear facilities. In this paper we beams (about 50 keV). Once the ions are decelerated and trapped, the vacuum is in the UHV-region between

Schuessler, Hans

37

Short Reversal of the Palaeomagnetic Field about 280 000 Years Ago at Long Valley, California  

Science Journals Connector (OSTI)

A reversal of the palaeomagnetic field is recorded in exposed lake sediments at Long Valley and Mono Basin in east-central California. ... reversal is estimated to be several thousand years long and 280 000 years...

Joseph C. Liddicoat; Roy A. Bailey

1989-01-01T23:59:59.000Z

38

Stable Mean Field Solution of a Short-Range Interacting SO(3) Quantum Heisenberg Spin-Glass  

E-Print Network [OSTI]

We present a mean-field solution for a quantum, short-range interacting, disordered, SO(3) Heisenberg spin model, in which the Gaussian distribution of couplings is centered in an AF coupling $\\bar J>0$, and which, for weak disorder, can be treated as a perturbation of the pure AF Heisenberg system. The phase diagram contains, apart from a N\\'eel phase at T=0, spin-glass and paramagnetic phases whose thermodynamic stability is demonstrated by an analysis of the Hessian matrix of the free-energy. The magnetic susceptibilities exhibit the typical cusp of a spin-glass transition.

C. M. S. da Conceiçăo; E. C. Marino

2008-02-03T23:59:59.000Z

39

Laboratory Studies of the Short-term Responses of Freshwater Fish to Electromagnetic Fields  

SciTech Connect (OSTI)

Hydrokinetic energy technologies are being proposed as an environmentally preferred means of generating electricity from river and tidal currents. Among the potential issues that must be investigated in order to resolve environmental concerns are the effects on aquatic organisms of electromagnetic fields created by underwater generators and transmission cables. The behavioral responses of common freshwater fishes to static and variable electromagnetic fields (EMF) that may be emitted by hydrokinetic projects were evaluated in laboratory experiments. Various fish species were exposed to either static (DC) EMF fields created by a permanent bar magnet or variable (AC) EMF fields created by a switched electromagnet for 48 h, fish locations were recorded with a digital imaging system, and changes in activity level and distribution relative to the magnet position were quantified at 5-min intervals. Experiments with fathead minnows, redear sunfish, striped bass, lake sturgeon, and channel catfish produced mixed results. Except for fathead minnows there was no effect on activity level. Only redear sunfish and channel catfish exhibited a change in distribution relative to the position of the magnet with an apparent attraction to the EMF source. In separate experiments, rapid behavioral responses of paddlefish and lake sturgeon to onset of the AC field were recorded with high-speed video. Paddlefish did not react to a variable, 60-Hz magnetic field like that which would be emitted by an AC generator or cable, but lake sturgeon consistently responded to the variable, AC-generated magnetic field with a variety of altered swimming behaviors. These results will be useful for determining under what circumstances cables or generators need to be positioned to minimize interactions with sensitive species.

Bevelhimer, Mark S [ORNL; Cada, Glenn F [ORNL; Fortner, Allison M [ORNL; Schweizer, Peter E [ORNL; Riemer, Kristina P [ORNL

2013-01-01T23:59:59.000Z

40

The Particle Adventure | How do we detect what's happening? | Wavelength  

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

Wavelength and resolution explained Wavelength and resolution explained Wavelength and resolution explained Things with long wavelengths are analogous to the basketball in the cave story because neither can provide too much detail about what they hit. Things with short wavelengths are like the marbles in that they can provide you with fairly detailed information about what they hit. The shorter the probe's wavelength is, the more information you can get about the target. A good example of the wavelength vs. resolution issue is a swimming pool. If you have a swimming pool with waves which are 1 meter apart (a 1 meter wavelength) and push a stick into the water, the pool's waves just pass around the stick because the 1 meter wavelength means that the pool's waves won't be affected by such a tiny target.

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


41

Quantum field theory solution for a short-range interacting SO(3) quantum spin-glass  

E-Print Network [OSTI]

We study the quenched disordered magnetic system, which is obtained from the 2D SO(3) quantum Heisenberg model, on a square lattice, with nearest neighbors interaction, by taking a Gaussian random distribution of couplings centered in an antiferromagnetic coupling, $\\bar J>0$ and with a width $\\Delta J$. Using coherent spin states we can integrate over the random variables and map the system onto a field theory, which is a generalization of the SO(3) nonlinear sigma model with different flavors corresponding to the replicas, coupling parameter proportional to $\\bar J$ and having a quartic spin interaction proportional to the disorder ($\\Delta J$). After deriving the CP$^1$ version of the system, we perform a calculation of the free energy density in the limit of zero replicas, which fully includes the quantum fluctuations of the CP$^1$ fields $z_i$. We, thereby obtain the phase diagram of the system in terms of ($T, \\bar J, \\Delta J$). This presents an ordered antiferromagnetic (AF) phase, a paramagnetic (PM) phase and a spin-glass (SG) phase. A critical curve separating the PM and SG phases ends at a quantum critical point located between the AF and SG phases, at T=0. The Edwards-Anderson order parameter, as well as the magnetic susceptibilities are explicitly obtained in each of the three phases as a function of the three control parameters. The magnetic susceptibilities show a Curie-type behavior at high temperatures and exhibit a clear cusp, characteristic of the SG transition, at the transition line. The thermodynamic stability of the phases is investigated by a careful analysis of the Hessian matrix of the free energy. We show that all principal minors of the Hessian are positive in the limit of zero replicas, implying in particular that the SG phase is stable.

C. M. S. da Conceiçăo; E. C. Marino

2009-03-02T23:59:59.000Z

42

Intermediate wavelength magnetic anomalies over ocean basins  

SciTech Connect (OSTI)

We have examined three very long magnetic field profiles taken over ocean basins for the presence of intermediate wavelength magnetic anomalies. One profile was from the Atlantic Ocean in the Transatlantic Geotraverse area, one ran along latitude 35/sup 0/S in the SE Pacific, and one ran along 150/sup 0/W in the Pacific. All three profiles show the presence of intermediate wavelength (65--1500 km) magnetic anomalies generated in the crust or upper mantle. The analysis of magnetic field power spectra shows that the core field becomes unimportant at about a wavelength of 1500 km. Sea floor spreading anomalies should produce a maximum in power at about a wavelength of 65 km. Between these two wavelengths there should be a minimum in power which is not seen on observed records. Inverting the anomalous field to obtain some idea of the magnetization necessary to explain these intermediate wavelength magnetic anomalies shows that values of magnetization in excess of 1 A m/sup -1/ are needed if the magnetized layer is as thick as the ocean crust. Alternatively, rather large thicknesses of upper mantle material with lower intensities of magnetization need to be used. The reason why such magnetization variations exist is not known. It can be shown that upward continuation of the magnetic anomaly signature to an altitude of 350 km (about the perihelion altitude of MAGSAT) will produce anomalies up to 10 nT in amplitude. These should be capable of being seen by MAGSAT, and thus allow us to determine the spatial arrangement of the intermediate wavelength anomalies and hence, hopefully, a clue as to their origin.

Harrison, C.G.A.; Carle, H.M.

1981-12-10T23:59:59.000Z

43

Wavelength meter having elliptical wedge  

DOE Patents [OSTI]

A wavelength meter is disclosed which can determine the wavelength of a laser beam from a laser source within an accuracy range of two parts in 10.sup.8. The wavelength meter has wedge having an elliptically shaped face to the optical path of the laser source and includes interferometer plates which form a vacuum housing.

Hackel, Richard P. (Livermore, CA); Feldman, Mark (Livermore, CA)

1992-01-01T23:59:59.000Z

44

Wavelength meter having elliptical wedge  

DOE Patents [OSTI]

A wavelength meter is disclosed which can determine the wavelength of a laser beam from a laser source within an accuracy range of two parts in 10[sup 8]. The wavelength meter has wedge having an elliptically shaped face to the optical path of the laser source and includes interferometer plates which form a vacuum housing. 7 figs.

Hackel, R.P.; Feldman, M.

1992-12-01T23:59:59.000Z

45

Radio Wavelength Observatories within the Exploration Architecture  

E-Print Network [OSTI]

Observations at radio wavelengths address key problems in astrophysics, astrobiology, and lunar structure including the first light in the Universe (the Epoch of Reionization), the presence of magnetic fields around extrasolar planets, particle acceleration mechanisms, and the structure of the lunar ionosphere. Moreover, achieving the performance needed to address these scientific questions demands observations at wavelengths longer than those that penetrate the Earth's ionosphere, observations in extremely "radio quiet" locations such as the Moon's far side, or both. We describe a series of lunar-based radio wavelength interferometers of increasing capability. The Radio Observatory for Lunar Sortie Science (ROLSS) is an array designed to be deployed during the first lunar sorties (or even before via robotic rovers) and addressing particle acceleration and the lunar ionosphere. Future arrays would be larger, more capable, and deployed as experience is gained in working on the lunar surface.

J. Lazio; R. J. Macdowall; J. Burns; L. Demaio; D. L. Jones; K. W. Weiler

2007-01-26T23:59:59.000Z

46

Workshop on scientific applications of short wavelength coherent light sources  

SciTech Connect (OSTI)

This report contains paper on the following topics: A 2 to 4nm High Power FEL On the SLAC Linac; Atomic Physics with an X-ray Laser; High Resolution, Three Dimensional Soft X-ray Imaging; The Role of X-ray Induced Damage in Biological Micro-imaging; Prospects for X-ray Microscopy in Biology; Femtosecond Optical Pulses ; Research in Chemical Physics Surface Science, and Materials Science, with a Linear Accelerator Coherent Light Source; Application of 10 GeV Electron Driven X-ray Laser in Gamma-ray Laser Research; Non-Linear Optics, Fluorescence, Spectromicroscopy, Stimulated Desorption: We Need LCLS' Brightness and Time Scale; Application of High Intensity X-rays to Materials Synthesis and Processing; LCLS Optics: Selected Technological Issues and Scientific Opportunities; Possible Applications of an FEL for Materials Studies in the 60 eV to 200 eV Spectral Region.

Spicer, W.; Arthur, J.; Winick, H.

1993-02-01T23:59:59.000Z

47

Workshop on scientific applications of short wavelength coherent light sources  

SciTech Connect (OSTI)

This report contains paper on the following topics: A 2 to 4nm High Power FEL On the SLAC Linac; Atomic Physics with an X-ray Laser; High Resolution, Three Dimensional Soft X-ray Imaging; The Role of X-ray Induced Damage in Biological Micro-imaging; Prospects for X-ray Microscopy in Biology; Femtosecond Optical Pulses?; Research in Chemical Physics Surface Science, and Materials Science, with a Linear Accelerator Coherent Light Source; Application of 10 GeV Electron Driven X-ray Laser in Gamma-ray Laser Research; Non-Linear Optics, Fluorescence, Spectromicroscopy, Stimulated Desorption: We Need LCLS` Brightness and Time Scale; Application of High Intensity X-rays to Materials Synthesis and Processing; LCLS Optics: Selected Technological Issues and Scientific Opportunities; Possible Applications of an FEL for Materials Studies in the 60 eV to 200 eV Spectral Region.

Spicer, W.; Arthur, J.; Winick, H.

1993-02-01T23:59:59.000Z

48

Non-linear modulation of short wavelength compressional Alfven eigenmodes  

SciTech Connect (OSTI)

Most Alfvenic activity in the frequency range between toroidal Alfven eigenmodes and roughly one half of the ion cyclotron frequency on National Spherical Torus eXperiment [Ono et al., Nucl. Fusion 40, 557 (2000)], that is, approximately 0.3 MHz up to Almost-Equal-To 1.2 MHz, are modes propagating counter to the neutral beam ions. These have been modeled as Compressional and Global Alfven Eigenmodes (CAE and GAE) and are excited through a Doppler-shifted cyclotron resonance with the beam ions. There is also a class of co-propagating modes at higher frequency than the counter-propagating CAE and GAE. These modes have been identified as CAE, and are seen mostly in the company of a low frequency, n = 1 kink-like mode. In this paper, we present measurements of the spectrum of these high frequency CAE (hfCAE) and their mode structure. We compare those measurements to a simple model of CAE and present a predator-prey type model of the curious non-linear coupling of the hfCAE and the low frequency kink-like mode.

Fredrickson, E. D.; Gorelenkov, N. N.; Podesta, M.; Gerhardt, S. P.; Bell, R. E.; Diallo, A.; LeBlanc, B. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States); Bortolon, A. [University of California, Irvine, California 92697 (United States); Crocker, N. A. [University of California, Los Angeles, California 90095 (United States); Levinton, F. M.; Yuh, H. [Nova Photonics, Princeton, New Jersey 08543 (United States)

2013-04-15T23:59:59.000Z

49

High-resolution measurements of the spatial and temporal evolution of megagauss magnetic fields created in intense short-pulse laser-plasma interactions  

SciTech Connect (OSTI)

A pump-probe polarimetric technique is demonstrated, which provides a complete, temporally and spatially resolved mapping of the megagauss magnetic fields generated in intense short-pulse laser-plasma interactions. A normally incident time-delayed probe pulse reflected from its critical surface undergoes a change in its ellipticity according to the magneto-optic Cotton-Mouton effect due to the azimuthal nature of the ambient self-generated megagauss magnetic fields. The temporal resolution of the magnetic field mapping is typically of the order of the pulsewidth, limited by the laser intensity contrast, whereas a spatial resolution of a few ?m is achieved by this optical technique. High-harmonics of the probe can be employed to penetrate deeper into the plasma to even near-solid densities. The spatial and temporal evolution of the megagauss magnetic fields at the target front as well as at the target rear are presented. The ?m-scale resolution of the magnetic field mapping provides valuable information on the filamentary instabilities at the target front, whereas probing the target rear mirrors the highly complex fast electron transport in intense laser-plasma interactions.

Chatterjee, Gourab, E-mail: gourab@tifr.res.in; Singh, Prashant Kumar; Adak, Amitava; Lad, Amit D.; Kumar, G. Ravindra, E-mail: grk@tifr.res.in [Tata Institute of Fundamental Research, 1 Homi Bhabha Road, Mumbai 400 005 (India)

2014-01-15T23:59:59.000Z

50

Wave properties of light Light is energy whose wavelength is the distance traveled in order to complete one cycle.  

E-Print Network [OSTI]

Wave properties of light Light is energy whose wavelength is the distance traveled in order to complete one cycle. The frequency of light refers to the number of cycles in one second. Low-energy light has a long wavelength and a low frequency. High-energy light has a short wavelength and a high

Zworski, Maciej

51

Aluminum nitride nanophotonic circuits operating at ultraviolet wavelengths  

SciTech Connect (OSTI)

Aluminum nitride (AlN) has recently emerged as a promising material for integrated photonics due to a large bandgap and attractive optical properties. Exploiting the wideband transparency, we demonstrate waveguiding in AlN-on-Insulator circuits from near-infrared to ultraviolet wavelengths using nanophotonic components with dimensions down to 40?nm. By measuring the propagation loss over a wide spectral range, we conclude that both scattering and absorption of AlN-intrinsic defects contribute to strong attenuation at short wavelengths, thus providing guidelines for future improvements in thin-film deposition and circuit fabrication.

Stegmaier, M.; Ebert, J.; Pernice, W. H. P., E-mail: wolfram.pernice@kit.edu [Institute of Nanotechnology, Karlsruhe Institute of Technology, 76133 Karlsruhe (Germany); Meckbach, J. M.; Ilin, K.; Siegel, M. [Institute of Micro- und Nanoelectronic Systems, Karlsruhe Institute of Technology, 76187 Karlsruhe (Germany)

2014-03-03T23:59:59.000Z

52

Analysis of a spinning polygon wavelength swept laser  

E-Print Network [OSTI]

It has been known for quite some time that spinning polygon, and similar, swept lasers used in OCT favor the short to long wavelength sweep direction because of four wave mixing in the gain medium. Here we have reformulated the problem in the time domain and show experimentally and through numerical simulation that these lasers are pulsed. The emitted pulses modulate the gain medium refractive index to red shift the light. Instead of new wavelengths being built up slowly from spontaneous emission, each pulse hops to a longer wavelength by nonlinear means, tracking the tunable filter. This allows high speed, low noise tuning in the blue to red direction. Based on this model, we make the first coherence length calculations for a swept source.

Johnson, Bart; Kuznetsov, Mark; Goldberg, Brian D; Whitney, Peter; Flanders, Dale C

2015-01-01T23:59:59.000Z

53

field  

National Nuclear Security Administration (NNSA)

9%2A en Ten-Year Site Plans (TYSP) http:nnsa.energy.govaboutusouroperationsinfopsinfopstysp

field field-type-text field-field-page-name">

54

Solid colloidal optical wavelength filter  

DOE Patents [OSTI]

A solid colloidal optical wavelength filter includes a suspension of spheal particles dispersed in a coagulable medium such as a setting plastic. The filter is formed by suspending spherical particles in a coagulable medium; agitating the particles and coagulable medium to produce an emulsion of particles suspended in the coagulable medium; and allowing the coagulable medium and suspended emulsion of particles to cool.

Alvarez, Joseph L. (Boulder, CO)

1992-01-01T23:59:59.000Z

55

The dynamics of interacting nonlinearities governing long wavelength driftwave turbulence  

SciTech Connect (OSTI)

Because of the ubiquitous nature of turbulence and the vast array of different systems which have turbulent solutions, the study of turbulence is an area of active research. Much present day understanding of turbulence is rooted in the well established properties of homogeneous Navier-Stokes turbulence, which, due to its relative simplicity, allows for approximate analytic solutions. This work examines a group of turbulent systems with marked differences from Navier-Stokes turbulence, and attempts to quantify some of their properties. This group of systems represents a variety of drift wave fluctuations believed to be of fundamental importance in laboratory fusion devices. From extensive simulation of simple local fluid models of long wavelength drift wave turbulence in tokamaks, a reasonably complete picture of the basic properties of spectral transfer and saturation has emerged. These studies indicate that many conventional notions concerning directions of cascades, locality and isotropy of transfer, frequencies of fluctuations, and stationarity of saturation are not valid for moderate to long wavelengths. In particular, spectral energy transfer at long wavelengths is dominated by the E {times} B nonlinearity, which carries energy to short scale in a manner that is highly nonlocal and anisotropic. In marked contrast to the canonical self-similar cascade dynamics of Kolmogorov, energy is efficiently passed between modes separated by the entire spectrum range in a correlation time. At short wavelengths, transfer is dominated by the polarization drift nonlinearity. While the standard dual cascade applies in this subrange, it is found that finite spectrum size can produce cascades that are reverse directed and are nonconservative in enstrophy and energy similarity ranges. In regions where both nonlinearities are important, cross-coupling between the nolinearities gives rise to large no frequency shifts as well as changes in the spectral dynamics.

Newman, D.E.

1993-09-01T23:59:59.000Z

56

Wavelength-doubling optical parametric oscillator  

DOE Patents [OSTI]

A wavelength-doubling optical parametric oscillator (OPO) comprising a type II nonlinear optical medium for generating a pair of degenerate waves at twice a pump wavelength and a plurality of mirrors for rotating the polarization of one wave by 90 degrees to produce a wavelength-doubled beam with an increased output energy by coupling both of the degenerate waves out of the OPO cavity through the same output coupler following polarization rotation of one of the degenerate waves.

Armstrong, Darrell J. (Albuquerque, NM); Smith, Arlee V. (Albuquerque, NM)

2007-07-24T23:59:59.000Z

57

Terahertz imaging of sub-wavelength particles with Zenneck surface waves  

SciTech Connect (OSTI)

Impact of sub-wavelength-size dielectric particles on Zenneck surface waves on planar metallic antennas is investigated at terahertz (THz) frequencies with THz near-field probe microscopy. Perturbations of the surface waves show the particle presence, despite its sub-wavelength size. The experimental configuration, which utilizes excitation of surface waves at metallic edges, is suitable for THz imaging of dielectric sub-wavelength size objects. As a proof of concept, the effects of a small strontium titanate rectangular particle and a titanium dioxide sphere on the surface field of a bow-tie antenna are experimentally detected and verified using full-wave simulations.

Navarro-Cía, M., E-mail: m.navarro@imperial.ac.uk [Optical and Semiconductor Devices Group, Department of Electrical and Electronic Engineering, Imperial College London, London SW7 2BT (United Kingdom); Centre for Plasmonics and Metamaterials, Imperial College London, London SW7 2AZ (United Kingdom); Centre for Terahertz Science and Engineering, Imperial College London, London SW7 2AZ (United Kingdom); Department of Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE (United Kingdom); Natrella, M.; Graham, C.; Renaud, C. C.; Seeds, A. J.; Mitrofanov, O., E-mail: o.mitrofanov@ucl.ac.uk [Department of Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE (United Kingdom); Dominec, F.; Kužel, P., E-mail: kuzelp@fzu.cz [Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21 Prague 8 (Czech Republic); Delagnes, J. C.; Mounaix, P., E-mail: p.mounaix@loma.u-bordeaux1.fr [LOMA, Bordeaux 1 University, CNRS UMR 4798, 351 cours de la Libération, 33405 Talence (France)

2013-11-25T23:59:59.000Z

58

Optical wavelength modulation in free electron lasers  

SciTech Connect (OSTI)

An attribute of the free electron laser (FEL) is the continuous tunability of the optical wavelength by modulation of the electron beam energy. The variation of the wavelength and power of the optical beam is studied as a function of FEL operating parameters. These results will be applied to the Stanford SCA FEL and Boeing FEL.

Mabe, R.M.; Wong, R.K.; Colson, W.B. [Naval Postgraduate School, Monterey, CA (United States)

1995-12-31T23:59:59.000Z

59

Generation and control of ultrashort-wavelength two-dimensional surface acoustic waves at nanoscale interfaces  

Science Journals Connector (OSTI)

In this work, we generate and probe the shortest wavelength surface acoustic waves to date, at 45 nm, by diffracting coherent extreme ultraviolet beams from a suboptical phononic crystal. The short acoustic wavelengths correspond to penetration depths of approximately 10 nm. We also measure the acoustic dispersion in two-dimensional nanostructured phononic crystals down to this wavelength for the first time, showing that it is strongly influenced by the ultrashort acoustic penetration depth, and that advanced finite-element analysis is required to model the dispersion. Finally, we use pulse sequences to control surface acoustic wave generation in one-dimensional nanostructured gratings, to preferentially enhance higher-order surface waves, while suppressing lower frequency waves. This allows us to reduce the generated surface acoustic wavelength by a factor of two for a defined nanostructure period.

Qing Li; Kathleen Hoogeboom-Pot; Damiano Nardi; Margaret M. Murnane; Henry C. Kapteyn; Mark E. Siemens; Erik H. Anderson; Olav Hellwig; Elizabeth Dobisz; Bruce Gurney; Ronggui Yang; Keith A. Nelson

2012-05-15T23:59:59.000Z

60

Reflective optical imaging system for extreme ultraviolet wavelengths  

SciTech Connect (OSTI)

This invention is comprised of a projection reflection optical system having two mirrors in a coaxial, four reflection configuration to reproduce the image of an object. The mirrors have aspherical reflection surfaces to provide a very high resolution of object feature wavelengths less than 200 {mu}m, and preferably less than 100 {mu}m. An image resolution of features less than 0.05--0.1 {mu}m, is obtained over a large area field; i.e., 25.4 mm {times} 25.4 mm, with a distortion less than 0.1 of the resolution over the image field.

Viswanathan, V.K.; Newnam, B.E.

1991-12-31T23:59:59.000Z

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


61

Optical amplification at the 1. 31 wavelength  

DOE Patents [OSTI]

An optical amplifier operating at the 1.31 [mu]m wavelength for use in such applications as telecommunications, cable television, and computer systems is described. An optical fiber or other waveguide device is doped with both Tm[sup 3+] and Pr[sup 3+] ions. When pumped by a diode laser operating at a wavelength of 785 nm, energy is transferred from the Tm[sup 3+] ions to the Pr[sup 3+] ions, causing the Pr[sup 3+] ions to amplify at a wavelength of 1.31. 1 figure.

Cockroft, N.J.

1994-02-15T23:59:59.000Z

62

Background and muon counting rates in underground muon measurements with a plastic scintillator counter based on a wavelength shifting fibre and a multi-pixel avalanche photodiode readout  

Science Journals Connector (OSTI)

In this short note we present results of background measurements carried out with polystyrene based cast plastic 12.0×12.0×3.0 cm3 size scintillator counter with a wavelength shifting fibre and a multi-pixel Geig...

Vladimir I. Volchenko; Evgeniy V. Akhrameev…

2010-06-01T23:59:59.000Z

63

LED Emission through Sub-Wavelength Apertures  

Science Journals Connector (OSTI)

A gold film with a hexagonal array of sub-wavelength apertures has been fabricated onto the emitting surface of a semiconductor light emitting diode. Interaction of the light with...

Harries, Michael D; Summers, Huw D

64

Shorts due to diagnostic leads  

SciTech Connect (OSTI)

The superconducting toroidal field coils that are being tested in the Large Coil Test Facility (LCTF) are heavily instrumented. General Electric coil, a lead wire of an internal sensor became shorted across an estimated three or four turns of the pancake winding. This short occurred during the final stages of the winding fabrication and was not accessible for repair. Resistance, voltage gradient, and transient voltage decay measurements were performed to characterize the short and the magnetic damping of the large steel bobbin and outer structural ring. The 32-gage wire causing the short was estimated to be about 10 cm long, with a resistance of 55 m..cap omega... As a safety measure, we decided to burn out the shorted wire at room temperature before installing the coil in LCTF. Tests were made to determine the energy needed to vaporize a small wire. Computer calculations indicated that within the voltage limits set for the coil, it was not feasible to burn out the wire by rapidly dumping the coil from a low-current dc charge-up. We accomplished the burnout by applying 800 V at 3.25 A, and 60 Hz for about 1 s. Transient voltage decay measurements made after the burnout and compared with those made before the attempt confirmed that the short had indeed been opened.

Ellis, J.F.; Lubell, M.S.; Pillsbury, R.D.; Shen, S.S.; Thome, R.J.; Walstrom, P.L.

1985-03-01T23:59:59.000Z

65

The behavior of the pitch angle of spiral arms depending on optical wavelength  

E-Print Network [OSTI]

Based on integral field spectroscopy data from the CALIFA survey, we investigate the possible dependence of spiral arm pitch angle with optical wavelength. For three of the five studied objects, the pitch angle gradually increases at longer wavelengths. This is not the case for two objects where the pitch angle remains constant. This result is confirmed by the analysis of SDSS data. We discuss the possible physical mechanisms to explain this phenomenon, as well as the implications of the results.

Martínez-García, Eric E; Rosales-Ortega, F F; González-Lópezlira, Rosa A; Fuentes-Carrera, Isaura; Luna, A

2014-01-01T23:59:59.000Z

66

Workshop on NEUtron WAVElength Dependent Imaging  

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

NEUtron WAVElength Dependent Imaging NEUtron WAVElength Dependent Imaging (NEUWAVE-4) Workshop October 2 - 5, 2011 Spallation Neutron Source * Oak Ridge National Laboratory * Gatlinburg, TN, USA About the Workshop Workshop Agenda Contact Information Important Dates NEUWAVE-4 Program Registration Lodging Social Events Tourist Information Organizing Committee Program Committee Workshop Flyer filler About the Workshop The Oak Ridge National Laboratory's Neutron Sciences Directorate and Energy & Environmental Sciences Directorate are pleased to host the 4th Workshop on NEUtron WAVElength Dependent Imaging (NEUWAVE-4). This meeting discusses the latest development in energy selective imaging techniques, applications and existing and future instrumentation. This meeting follows the successful meeting held in Garching, Germany (April 2008,) Abingdon, UK (June 2009,) and Hokkaido University (June 2010.)

67

Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

(83/3Q) (83/3Q) Short-Term Energy Outlook iuarterly Projections August 1983 Energy Information Administration Washington, D.C. 20585 t rt jrt- .ort- iort- iort- iort- nort- lort- '.ort- ort- Tt- .-m .erm -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term Term .-Term -Term xrm Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy ^nergy -OJ.UUK Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term

68

Multi-wavelength injection seeded mid-infrared optical parametric oscillator for DIAL  

SciTech Connect (OSTI)

We have constructed and fielded a multi-wavelength injection seeded mid-IR OPO source for DIAL. This OPO system was built for ground based remote sensing measurements of species with both broad (300 cm{sup -1}) and narrow absorption bandwidths (0.07 cm{sup -1} FWHM). The OPO utilizes a single frequency tunable diode laser for the injection seeded signal wavelength in the region from 6400 to 6700 cm{sup -1} and an angle phase-matched 5 cm LiNbO3 crystal to provide large tuning excursions on a slow time scale. The pump was a diode pumped Nd:YAG MOPA (9398 cm{sup -1}) running at 180 Hz. This pump source was repeatedly injection seeded with a different wavelength on each of film sequential shots forming a set of three pulses having wavelength separations on the order of 0.4 cm{sup -1} at a three color set repetition rate of 60 Hz. This combination of OPO signal and pump source produced a set of three time staggered idler wavelengths separated by 0.4 cm{sup -1} with the center wavelength tunable from 2700 to 3000 cm{sup -1}. This OPO system was used in field test experiments to detect the release of chemicals from a standoff distance of 3.3 Km. We present key OPO design criteria, performance data, and numerical simulations that agree with our observations of pump induced spectral impurities in the OPO output.

Webb, M.S.; Stanion, K.B.; Deane, D.J. [and others

1996-01-27T23:59:59.000Z

69

The Long Wavelength Array (LWA) URSI --Ottawa  

E-Print Network [OSTI]

Inst. & State U. N. Kassim, U.S. Naval Research Laboratory G. Taylor, University of New Mexico Lee J Rickard, University of New Mexico #12;The Long Wavelength Array (LWA) An LWA Station State of New Mexico cosmic rays Supernova remnants & Galactic evolution Pulsars Solar Science & Space Weather Radio

Ellingson, Steven W.

70

Band structure engineering of superlattice-based short-, mid-, and long-wavelength infrared avalanche photodiodes  

E-Print Network [OSTI]

avalanche photodiodes for improved impact ionization rates K. Abu El-Ruba) Microphysics Laboratory on the hole- and electron-initiated impact ionization in Sb-based superlattice avalanche photodiodes. Earlier calculations have revealed that bulk alloy AlGaSb avalanche photodiodes with alloy composition near

Flatte, Michael E.

71

Reduction of radiation damage and other benefits of short wavelengths for macromolecular crystallography data collection  

Science Journals Connector (OSTI)

X-ray photons with energy higher than usual improve both the number and the quality of diffraction data from a given macromolecular crystal.

Fourme, R.

2012-06-12T23:59:59.000Z

72

Short-wavelength upconversion emissions in codoped glass ceramic and the optical  

E-Print Network [OSTI]

of electrical engineering, Yanshan University, Qinhuangdao, 066004, China 3 Laboratory of Sono- and photo-theranostic

Cao, Wenwu

73

Short-wavelength geoid, bathymetry and the convective pattern beneath the Pacific Ocean  

Science Journals Connector (OSTI)

......convective pattern beneath the Pacific Ocean L. Fleitout C. Moriceau aboratoire...geoid and bathymetry data in the Pacific Ocean are used to shed new light on...various wavebands on the Central Pacific Ocean: constraints on the origin of......

L. Fleitout; C. Moriceau

1992-07-01T23:59:59.000Z

74

Overview of the SDI (Strategic Defense Initiative) Program in short wavelength chemical lasers  

SciTech Connect (OSTI)

Advanced chemical lasers promise to be effective space-based weapons against responsive threats. In this program, we are developing both CW and pulsed concepts for achieving this goal. Certain approaches may also be appropriate as ground-based weapons and fusion drivers. 12 refs., 1 fig., 5 tabs.

Jones, C.R.

1988-01-01T23:59:59.000Z

75

All-optical Wavelength Conversion in Aluminum Gallium Arsenide at Telecommunications Wavelengths.  

E-Print Network [OSTI]

??This thesis aims at both developing highly nonlinear Aluminum Gallium Arsenide waveguides(AlGaAs) and demonstrating all-optical wavelength conversion via cross-phase modulation in AlGaAs waveguides at telecommunications… (more)

Ng, Wing-Chau

2011-01-01T23:59:59.000Z

76

WAVELENGTH CALIBRATION OF THE HAMILTON ECHELLE SPECTROGRAPH  

SciTech Connect (OSTI)

We present the wavelength calibration of the Hamilton Echelle Spectrograph at Lick Observatory. The main problem with the calibration of this spectrograph arises from the fact that thorium lines are absent in the spectrum of the presumed ThAr hollow-cathode lamp now under operation; numerous unknown strong lines, which have been identified as titanium lines, are present in the spectrum. We estimate the temperature of the lamp's gas which permits us to calculate the intensities of the lines and to select a large number of relevant Ti I and Ti II lines. The resulting titanium line list for the Lick hollow-cathode lamp is presented. The wavelength calibration using this line list was made with an accuracy of about 0.006 Ĺ.

Pakhomov, Yu. V. [Institute of Astronomy, Russian Academy of Sciences, Moscow (Russian Federation); Zhao, G., E-mail: pakhomov@inasan.ru [Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China)

2013-10-01T23:59:59.000Z

77

Driving-laser wavelength dependence of high-order harmonic generation in H{sub 2}{sup +} molecules  

SciTech Connect (OSTI)

The electron-nuclear dynamics of one-dimensional H{sub 2}{sup +} molecular high harmonic generation is investigated by numerical integration of the non-Born-Oppenheimer time-dependent Schroedinger equation. It is found that the nuclear motion and electron ionization are more significant for the longer wavelength and the stronger intensity of the driving laser pulse. When the ground-state H{sub 2}{sup +} molecule is driven by a short laser pulse (ten optical cycles in the calculations), a strong signature of nuclear motion is seen in the wavelength scaling (800-2000 nm) of harmonic yield, following a {lambda}{sup -(7-8)} scaling law at a constant laser intensity. It is attributed to the fast ground-state depletion induced by the strong nuclear motion, when using the long wavelength. Consequently, the wavelength scaling gives an insight into the nuclear dynamics.

Liu Candong; Zeng Zhinan; Wei Pengfei; Liu Peng; Li Ruxin; Xu Zhizhan [State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China)

2010-03-15T23:59:59.000Z

78

Multiple wavelength X-ray monochromators  

DOE Patents [OSTI]

An improved apparatus and method is provided for separating input x-ray radiation containing first and second x-ray wavelengths into spatially separate first and second output radiation which contain the first and second x-ray wavelengths, respectively. The apparatus includes a crystalline diffractor which includes a first set of parallel crystal planes, where each of the planes is spaced a predetermined first distance from one another. The crystalline diffractor also includes a second set of parallel crystal planes inclined at an angle with respect to the first set of crystal planes where each of the planes of the second set of parallel crystal planes is spaced a predetermined second distance from one another. In one embodiment, the crystalline diffractor is comprised of a single crystal. In a second embodiment, the crystalline diffractor is comprised of a stack of two crystals. In a third embodiment, the crystalline diffractor includes a single crystal that is bent for focusing the separate first and second output x-ray radiation wavelengths into separate focal points. 3 figs.

Steinmeyer, P.A.

1992-11-17T23:59:59.000Z

79

Wavelength meter having single mode fiber optics multiplexed inputs  

DOE Patents [OSTI]

A wavelength meter having a single mode fiber optics input is disclosed. The single mode fiber enables a plurality of laser beams to be multiplexed to form a multiplexed input to the wavelength meter. The wavelength meter can provide a determination of the wavelength of any one or all of the plurality of laser beams by suitable processing. Another aspect of the present invention is that one of the laser beams could be a known reference laser having a predetermined wavelength. Hence, the improved wavelength meter can provide an on-line calibration capability with the reference laser input as one of the plurality of laser beams.

Hackel, R.P.; Paris, R.D.; Feldman, M.

1993-02-23T23:59:59.000Z

80

Wavelength meter having single mode fiber optics multiplexed inputs  

DOE Patents [OSTI]

A wavelength meter having a single mode fiber optics input is disclosed. The single mode fiber enables a plurality of laser beams to be multiplexed to form a multiplexed input to the wavelength meter. The wavelength meter can provide a determination of the wavelength of any one or all of the plurality of laser beams by suitable processing. Another aspect of the present invention is that one of the laser beams could be a known reference laser having a predetermined wavelength. Hence, the improved wavelength meter can provide an on-line calibration capability with the reference laser input as one of the plurality of laser beams.

Hackel, Richard P. (Livermore, CA); Paris, Robert D. (San Ramon, CA); Feldman, Mark (Pleasanton, CA)

1993-01-01T23:59:59.000Z

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


81

Fast Wavelength Tuning of External Cavity Quantum Cascade Lasers  

Science Journals Connector (OSTI)

We present a fast wavelength tuning of a Littrow-type EC-QCL. This configuration allows for coarse broadband and high resolution mode-hop-free wavelength scanning at >1kHz rates....

Tsai, Tracy R; Wysocki, Gerard

82

C. Alan Short  

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

Alan Short Alan Short Professor of Architecture University of Cambridge cas64@cam.ac.uk This speaker was a visiting speaker who delivered a talk or talks on the date(s) shown at the links below. This speaker is not otherwise associated with Lawrence Berkeley National Laboratory, unless specifically identified as a Berkeley Lab staff member. C. Alan Short's practice has also won the first 'High Architecture, Low Energy Award' (Architecture Today) 1995; 'Green Building of the Year' (The Independent) 1995; H.J. Dyos Award 1996, 'Building of the Year Award' (Building Magazine) 2000, Society of College, National and University Librarians (SCONUL) 'Best Academic Library Award' 1998-2003 and also in 2008; CIBSE 'Project of the Year' 2003 & 2004; RIBA Awards 1996, 2000.

83

Woltjer-Taylor State Without Taylor's Conjecture - Plasma Relaxation at all Wavelengths  

SciTech Connect (OSTI)

In astrophysical and laboratory plasmas, it has been discovered that plasmas relax towards the well-known Woltjer-Taylor state specified by ? x B = ?B for a constant ? . To explain how such a relaxed state is reached, Taylor developed his famous relaxation theory based on the conjecture that the relaxation is dominated by short wavelength fluctuations. However, there is no conclusive experimental and numerical evidence to support Taylor's conjecture. A new theory is developed, which predicts that the system will evolve towards the Woltjer-Taylor state for an arbitrary fluctuation spectrum.

Hong Qin,Wandong Liu, Hong Li, and Jonathan Squire

2012-10-10T23:59:59.000Z

84

Fraud Awareness Short Presentation  

E-Print Network [OSTI]

Fraud Awareness Overview A Short Presentation From Your Internal Audit Department With assistance from the Office of the State Controller and the EAGLE Training Team #12;What is Fraud? #12;#12;What are some examples of fraud? #12;#12;Who commits fraud and why? #12;Management Manipulation

Howitt, Ivan

85

Novel Nanotechnology for a Fine Plasmon Wavelength Tuning  

Science Journals Connector (OSTI)

Control of silver nanoparticles characteristics using a dedicated nano-clusters source and wavelength tuning of Plasmon resonance generated by small nanoparticles using different...

Najjar, Rita; Boutami, Salim; Cayron, Cyril; Muffato, Viviane; Kean, Alistair; Saranu, Srinivas; Santbergen, Rudi; Quesnel, Etienne

86

Long-wavelength density turbulence in the TFTR tokamak  

Science Journals Connector (OSTI)

Long-wavelength (k??itokamak plasma with auxiliary heating. Density fluctuations of n?/n>0.5% exist for k?tokamaks.

R. J. Fonck; G. Cosby; R. D. Durst; S. F. Paul; N. Bretz; S. Scott; E. Synakowski; G. Taylor

1993-06-14T23:59:59.000Z

87

Active wavelength control of an external cavity quantum cascade laser  

Science Journals Connector (OSTI)

Semiconductor lasers are increasingly popular as components of high...1]. Quantum Cascade Lasers (QCLs) are particularly attractive semiconductor lasers, since their operating wavelengths in the mid...2...]. For ...

T. Tsai; G. Wysocki

2012-11-01T23:59:59.000Z

88

NIF sets records for target shots, wavelength changes | National...  

National Nuclear Security Administration (NNSA)

month. Changing the laser wavelength by a few angstroms in different cones of laser beams enables researchers to adjust the amount of energy reaching different areas of the...

89

Dark Energy: A Short Review  

E-Print Network [OSTI]

The accelerating expansion of the universe is the most surprising cosmological discovery in many decades. In this short review, we briefly summarize theories for the origin of cosmic acceleration and the observational methods being used to test these theories. We then discuss the current observational state of the field, with constraints from the cosmic microwave background (CMB), baryon acoustic oscillations (BAO), Type Ia supernovae (SN), direct measurements of the Hubble constant ($H_0$), and measurements of galaxy and matter clustering. Assuming a flat universe and dark energy with a constant equation-of-state parameter $w = P/\\rho$, the combination of Planck CMB temperature anisotropies, WMAP CMB polarization, the Union2.1 SN compilation, and a compilation of BAO measurements yields $w = -1.10^{+0.08}_{-0.07}$, consistent with a cosmological constant ($w=-1$). However, with these constraints the cosmological constant model predicts a value of $H_0$ that is lower than several of the leading recent estimat...

Mortonson, Michael J; White, Martin

2014-01-01T23:59:59.000Z

90

Highly accurate Michelson type wavelength meter that uses a rubidium stabilized 1560 nm diode laser as a wavelength reference  

SciTech Connect (OSTI)

We investigated the accuracy limitation of a wavelength meter installed in a vacuum chamber to enable us to develop a highly accurate meter based on a Michelson interferometer in 1550 nm optical communication bands. We found that an error of parts per million order could not be avoided using famous wavelength compensation equations. Chromatic dispersion of the refractive index in air can almost be disregarded when a 1560 nm wavelength produced by a rubidium (Rb) stabilized distributed feedback (DFB) diode laser is used as a reference wavelength. We describe a novel dual-wavelength self-calibration scheme that maintains high accuracy of the wavelength meter. The method uses the fundamental and second-harmonic wavelengths of an Rb-stabilized DFB diode laser. Consequently, a highly accurate Michelson type wavelength meter with an absolute accuracy of 5x10{sup -8} (10 MHz, 0.08 pm) over a wide wavelength range including optical communication bands was achieved without the need for a vacuum chamber.

Masuda, Shin; Kanoh, Eiji; Irisawa, Akiyoshi; Niki, Shoji

2009-08-01T23:59:59.000Z

91

Short introduction to MATLAB  

Science Journals Connector (OSTI)

MATLAB is a commercial software and a trademark ... and a large number of specialized toolboxes. MATLAB is getting increasingly popular in all fields...

2009-01-01T23:59:59.000Z

92

Systematic wavelength selection for improved multivariate spectral analysis  

DOE Patents [OSTI]

Methods and apparatus for determining in a biological material one or more unknown values of at least one known characteristic (e.g. the concentration of an analyte such as glucose in blood or the concentration of one or more blood gas parameters) with a model based on a set of samples with known values of the known characteristics and a multivariate algorithm using several wavelength subsets. The method includes selecting multiple wavelength subsets, from the electromagnetic spectral region appropriate for determining the known characteristic, for use by an algorithm wherein the selection of wavelength subsets improves the model's fitness of the determination for the unknown values of the known characteristic. The selection process utilizes multivariate search methods that select both predictive and synergistic wavelengths within the range of wavelengths utilized. The fitness of the wavelength subsets is determined by the fitness function F=.function.(cost, performance). The method includes the steps of: (1) using one or more applications of a genetic algorithm to produce one or more count spectra, with multiple count spectra then combined to produce a combined count spectrum; (2) smoothing the count spectrum; (3) selecting a threshold count from a count spectrum to select these wavelength subsets which optimize the fitness function; and (4) eliminating a portion of the selected wavelength subsets. The determination of the unknown values can be made: (1) noninvasively and in vivo; (2) invasively and in vivo; or (3) in vitro.

Thomas, Edward V. (2828 Georgia NE., Albuquerque, NM 87110); Robinson, Mark R. (1603 Solano NE., Albuquerque, NM 87110); Haaland, David M. (809 Richmond Dr. SE., Albuquerque, NM 87106)

1995-01-01T23:59:59.000Z

93

Polarization-independent optical wavelength filter for channel dropping applications  

DOE Patents [OSTI]

The polarization dependence of optical wavelength filters is eliminated by using waveguide directional couplers. Material birefringence is used to compensate for the waveguide (electromagnetic) birefringence which is the original cause of the polarization dependence. Material birefringence is introduced in a controllable fashion by replacing bulk waveguide layers by finely layered composites, such as multiple quantum wells using III-V semiconductor materials. The filter has use in wavelength-division-multiplexed fiber optic communication systems. This filter has broad application for wavelength-tunable receivers in fiber optic communication links, which may be used for telecommunications, optical computer interconnect links, or fiber optic sensor systems. Since multiple-wavelength systems are increasingly being used for all of these applications, the filter is useable whenever a rapidly tunable, wavelength-filtering receiver is required.

Deri, Robert J. (Pleasanton, CA); Patterson, Frank (Livermore, CA)

1996-01-01T23:59:59.000Z

94

Effect of graphene on plasmonic metasurfaces at infrared wavelengths  

SciTech Connect (OSTI)

Significant enhancement of infrared transmittance by the presence of a graphene layer on a plasmonic metasurface (PLM) has been demonstrated. PLMs with different configurations were fabricated, and their transmittance with and without graphene was compared. Selective enhancement by graphene occurred at the plasmon resonance wavelength. The degree of enhancement was found to depend on the width of the gap between the periodic metal regions in the PLM. A maximum enhancement of ?210% was achieved at a wavelength of 10 ?m. The ability to achieve such a drastic increase in transmittance at the plasmon resonant wavelength is expected to lead to improvements in the performance of energy collecting devices and optical sensors.

Ogawa, Shinpei, E-mail: Ogawa.Shimpei@eb.MitsubishiElectric.co.jp; Fujisawa, Daisuke; Ueno, Masashi [Advanced Technology R and D Center, Mitsubishi Electric Corporation, 8-1-1 Tsukaguchi-Honmachi, Amagasaki, Hyogo 661-8661 (Japan)] [Advanced Technology R and D Center, Mitsubishi Electric Corporation, 8-1-1 Tsukaguchi-Honmachi, Amagasaki, Hyogo 661-8661 (Japan)

2013-11-15T23:59:59.000Z

95

Quantum Illumination at the Microwave Wavelengths  

E-Print Network [OSTI]

Quantum illumination is a quantum-optical sensing technique in which an entangled source is exploited to improve the detection of a low-reflectivity object that is immersed in a bright thermal background. Here we describe and analyze a system for applying this technique at microwave frequencies, a more appropriate spectral region for target detection than the optical, due to the naturally-occurring bright thermal background in the microwave regime. We use an electro-optomechanical converter to entangle microwave signal and optical idler fields, with the former being sent to probe the target region and the latter being retained at the source. The microwave radiation collected from the target region is then phase conjugated and upconverted into an optical field that is combined with the retained idler in a joint-detection quantum measurement. The error probability of this microwave quantum-illumination system, or quantum radar, is shown to be superior to that of any classical microwave radar of equal transmitted energy.

Shabir Barzanjeh; Saikat Guha; Christian Weedbrook; David Vitali; Jeffrey H. Shapiro; Stefano Pirandola

2015-01-31T23:59:59.000Z

96

Wavelength-specific reflections: A decade of EUV actinic mask inspection research  

SciTech Connect (OSTI)

Mask inspection is essential for the success of any pattern-transfer lithography technology, and EUV Lithography in particular faces unique challenges. EUV masks resonant-reflective multilayer coatings have a narrow, wavelength-specific response that dramatically affects the way that defects appear, or disappear, at various illuminating wavelengths. Furthermore, the ever-shrinking size of 'critical' defects limits the potential effectiveness of DUV inspection techniques over time. Researchers pursuing numerous ways of finding and characterizing defects on EUV masks and have met with varying degrees of success. Their lessons inform the current, urgent exploration to select the most effective techniques for high-volume manufacturing. Ranging from basic research and demonstration experiments to commercial inspection tool prototypes, we survey the recent history of work in this area, including sixteen projects in Europe, Asia, and America. Solutions range from scanning beams to microscopy, dark field imaging to pattern transfer.

Goldberg, Kenneth; Mochi, Iacopo

2010-12-31T23:59:59.000Z

97

ALMA observations of alpha Centauri: First detection of main-sequence stars at 3mm wavelength  

E-Print Network [OSTI]

The precise mechanisms that provide the non-radiative energy for heating the chromosphere and the corona of the Sun and those of other stars constitute an active field of research. By studying stellar chromospheres one aims at identifying the relevant physical processes. Defining the permittable extent of the parameter space can also serve as a template for the Sun-as-a-star. Earlier observations with Herschel and APEX have revealed the temperature minimum of alpha Cen, but these were unable to spatially resolve the binary into individual components. With the data reported here, we aim at remedying this shortcoming. Furthermore, these earlier data were limited to the wavelength region between 100 and 870mu. In the present context, we intend to extend the spectral mapping to longer wavelengths, where the contrast between stellar photospheric and chromospheric emission becomes increasingly evident. ALMA is particularly suited to point sources, such as unresolved stars. ALMA provides the means to achieve our obj...

Liseau, R; Bayo, A; Bertone, E; Black, J H; del Burgo, C; Chavez, M; Danchi, W; De la Luz, V; Eiroa, C; Ertel, S; Fridlund, M C W; Justtanont, K; Krivov, A; Marshall, J P; Mora, A; Montesinos, B; Nyman, L -A; Olofsson, G; Sanz-Forcada, J; Thebault, P; White, G J

2014-01-01T23:59:59.000Z

98

Fast quantum dot single photon source triggered at telecommunications wavelength  

E-Print Network [OSTI]

We demonstrate a quantum dot single photon source at 900 nm triggered at 300 MHz by a continuous wave telecommunications wavelength laser followed by an electro-optic modulator. The quantum dot is excited by on-chip-generated second harmonic radiation, resonantly enhanced by a GaAs photonic crystal cavity surrounding the InAs quantum dot. Our result suggests a path toward the realization of telecommunications-wavelength-compatible quantum dot single photon sources with speeds exceeding 1 GHz.

Kelley Rivoire; Sonia Buckley; Arka Majumdar; Hyochul Kim; Pierre Petroff; Jelena Vuckovic

2010-12-01T23:59:59.000Z

99

Inter-network regions of the Sun at millimetre wavelengths  

E-Print Network [OSTI]

The continuum intensity at wavelengths around 1 mm provides an excellent way to probe the solar chromosphere. Future high-resolution millimetre arrays, such as the Atacama Large Millimeter Array (ALMA), will thus produce valuable input for the ongoing controversy on the thermal structure and the dynamics of this layer. Synthetic brightness temperature maps are calculated on basis of three-dimensional radiation (magneto-)hydrodynamic (MHD) simulations. While the millimetre continuum at 0.3mm originates mainly from the upper photosphere, the longer wavelengths considered here map the low and middle chromosphere. The effective formation height increases generally with wavelength and also from disk-centre towards the solar limb. The average intensity contribution functions are usually rather broad and in some cases they are even double-peaked as there are contributions from hot shock waves and cool post-shock regions in the model chromosphere. Taking into account the deviations from ionisation equilibrium for hydrogen gives a less strong variation of the electron density and with it of the optical depth. The result is a narrower formation height range. The average brightness temperature increases with wavelength and towards the limb. The relative contrast depends on wavelength in the same way as the average intensity but decreases towards the limb. The dependence of the brightness temperature distribution on wavelength and disk-position can be explained with the differences in formation height and the variation of temperature fluctuations with height in the model atmospheres.

S. Wedemeyer-Boehm; H. -G. Ludwig; M. Steffen; J. Leenaarts; B. Freytag

2007-05-16T23:59:59.000Z

100

The mitigating effect of magnetic fields on Rayleigh-Taylor unstable inertial confinement fusion plasmas  

SciTech Connect (OSTI)

Rayleigh-Taylor (RT) instabilities at interfaces of disparate mass densities have long been known to generate magnetic fields during inertial confinement fusion implosions. An externally applied magnetic field can also be efficiently amplified by RT instabilities. The focus here is on magnetic field generation and amplification at the gas-ice interface which is RT unstable during the deceleration phase of the implosion. RT instabilities lead to undesirable mix of hot and cold plasmas which enhances thermal energy loss and tends to produce a more massive warm-spot instead of a hot-spot. Two mechanisms are shown here to mitigate the thermal energy loss from the hot-spot. The first mechanism is the reduction of electron thermal conductivity with interface-aligned magnetic fields. This can occur through self-generated magnetic fields via the Biermann battery effect as well as through externally applied magnetic fields that undergo an exponential growth via the stretch-and-fold magnetohydrodynamic dynamo. Self-generated magnetic fields during RT evolution can result in a factor of 2?10 decrease in the electron thermal conductivity at the gas-ice interface, while externally applied magnetic fields that are compressed to 6–1000 T at the onset of deceleration (corresponding to pre-implosion external fields of 0.06–10 T) could result in a factor of 2–500 reduction in electron thermal conductivity at the gas-ice interface. The second mechanism to mitigate thermal energy loss from the hot-spot is to decrease the interface mixing area between the hot and cold plasmas. This is achieved through large external magnetic fields of 1000 T at the onset of deceleration which damp short-wavelength RT modes and long-wavelength Kelvin-Helmholtz modes thus significantly slowing the RT growth and reducing mix.

Srinivasan, Bhuvana; Tang, Xian-Zhu [Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)] [Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

2013-05-15T23:59:59.000Z

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


101

Nucleon - Nucleon Interactions at Short Distances  

E-Print Network [OSTI]

Despite the progress made in understanding the NN interactions at long distances based on effective field theories, the understanding of the dynamics of short range NN interactions remains as elusive as ever. One of the most fascinating properties of short range interaction is its repulsive nature which is responsible for the stability of strongly interacting matter. The relevant distances, $\\le 0.5$ fm, in this case are such that one expects the onset of quark-gluon degrees of freedom with interaction being dominated by QCD dynamics. We review the current status of the understanding of the QCD dynamics of NN interactions at short distances, highlight outstanding questions and outline the theoretical foundation of QCD description of hard NN processes. We present examples of how the study of the hard elastic NN interaction can reveal the symmetry structure of valence quark component of the nucleon wave function and how the onset of pQCD regime is correlated with the onset of color transparency phenomena in hard $pp$ scattering in the nuclear medium. The discussions show how the new experimental facilities can help to advance the knowledge about the QCD nature of nuclear forces at short distances.

Misak M Sargsian

2014-03-04T23:59:59.000Z

102

Minimize Boiler Short Cycling Losses  

Broader source: Energy.gov [DOE]

This tip sheet on minimizing boiler short cycling losses provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

103

At-wavelength characterization of the extreme ultraviolet Engineering Test Stand Set-2 optic  

SciTech Connect (OSTI)

At-wavelength interferometric characterization of a new 4x-reduction lithographic-quality extreme ultraviolet (EUV) optical system is described. This state-of-the-art projection optic was fabricated for installation in the EUV lithography Engineering Test Stand (ETS) and is referred to as the ETS Set-2 optic. EUV characterization of the Set-2 optic is performed using the EUV phase-shifting point diffraction interferometer (PS/PDI) installed on an undulator beamline at Lawrence Berkeley National Laboratory's Advanced Light Source. This is the same interferometer previously used for the at-wavelength characterization and alignment of the ETS Set-1 optic. In addition to the PS/PDI-based full-field wavefront characterization, we also present wavefront measurements performed with lateral shearing interferometry, the chromatic dependence of the wavefront error, and the system-level pupil-dependent spectral-bandpass characteristics of the optic; the latter two properties are only measurable using at-wavelength interferometry.

Naulleau, Patrick; Goldberg, Kenneth A.; Anderson, Erik H.; Batson, Phillip; Denham, Paul E.; Jackson, Keith H.; Gullikson, Eric M.; Rekawa, Senajith; Bokor, Jeffrey

2001-06-10T23:59:59.000Z

104

Dark Field Microscopy for Analytical Laboratory Courses  

Science Journals Connector (OSTI)

An innovative and inexpensive optical microscopy experiment for a quantitative analysis or an instrumental analysis chemistry course is described. The students have hands-on experience with a dark field microscope and investigate the wavelength dependence ...

Ashley E. Augspurger; Anthony S. Stender; Kyle Marchuk; Thomas J. Greenbowe; Ning Fang

2014-05-01T23:59:59.000Z

105

Fabrication and long-wavelength characterization of neat and chemically modified graphene  

SciTech Connect (OSTI)

Graphene, a single- or several layer-thick carbon, attracts significant research activity because of its exceptional material properties. Graphene is a promising material for optoelectronic applications. Neat graphene demonstrates potential as a material for long wavelength photodetectors working at elevated temperatures. Chemical modification of graphene opens up many new applications of this material in electronics, in new composite materials, and in new catalysts for different chemical processes. Chemical vapor deposition-grown large-area graphene can be successfully modified with the creation of benzyne attachments. The investigation of microwave properties is an important part of graphene research. Two variants of near-field long wavelength microscopy were found efficient with graphene. Measurements with a probe formed by an electrically open end of a 4 GHz half-lambda parallel-strip transmission line resonator allow the implementation of an electrodynamic model of graphene microwave impedance. The results of near-field scanning superconducting quantum interference device (SQUID) RF microscopy of graphite and graphene at 200 MHz shed light on mechanisms of AC graphene response: screening currents induced in graphene by an external RF magnetic field tend to localize near structural defects.

Kalugin, Nikolai G. [Departments of Materials Engineering and Chemistry, New Mexico Tech, Socorro, NM 87801 (United States)

2014-03-31T23:59:59.000Z

106

Short–term solar effects  

Science Journals Connector (OSTI)

...J. L. Culhane and J. C. R. Hunt Short-term solar effects Richard A. Harrison Space Science and Technology...OX11 0QX, UK Short-term transient events in the solar atmosphere, namely solar flares and coronal mass ejections, can have a direct...

2003-01-01T23:59:59.000Z

107

Multi-wavelength surface emitting quantum cascade laser based on equivalent phase shift  

SciTech Connect (OSTI)

A novel surface emitting distributed feedback quantum cascade laser emitting around ????4.6??m is demonstrated by employing an equivalent phase shift (EPS) of quarter-wave (?/4). The EPS is fabricated through extending one sampling period by 50% in the center of a sampled Bragg grating. Single-lobed far-field radiation pattern with a low divergence angle of about 0.6°?×?16.8° is obtained. Selective single-mode lasing with a mean side mode suppression ratio above 20?dB and wavelength coverage range of 72?nm is achieved simultaneously on a single wafer only by changing the sampling period.

Zhang, J. C., E-mail: zhangjinchuan@semi.ac.cn; Liu, F. Q., E-mail: fqliu@semi.ac.cn; Yao, D. Y.; Wang, L. J.; Yan, F. L.; Liu, J. Q.; Wang, Z. G. [Institute of Semiconductors, Key Laboratory of Semiconductor Materials Science, Chinese Academy of Sciences, Beijing, 100083, People’s Republic of China and Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Beijing 100083 (China)

2014-01-21T23:59:59.000Z

108

Electrically tunable optical filter for infrared wavelength using liquid crystals in a Fabry–Perot étalon  

Science Journals Connector (OSTI)

Using the refractive index modulation in liquid crystals by an externally applied electric field we show that common nematic liquid crystals can be used in a Fabry–Perot étalon to produce an electrically tunable optical filter for use in the infrared region. Using commercial liquid crystals we demonstrate that the wavelength can be tuned over 175 nm using less than 10 V. In our first device the free?spectral range of the étalon is about 75 nm with a passband of about 1–2 nm which is determined by the quality of the mirrors that we have used.

J. S. Patel; M. A. Saifi; D. W. Berreman; Chinlon Lin; N. Andreadakis; S. D. Lee

1990-01-01T23:59:59.000Z

109

K Series X-Ray Wavelengths in Rare Earth Elements  

Science Journals Connector (OSTI)

The K-series x-rays in ten rare earth elements have been studied with a two-meter-radius bent-quartz-crystal spectrograph. The 3.7-Mev proton beam of the A-48 accelerator (UCRL, Livermore) was used to produce the atomic excitations. The wavelengths obtained for the K?1, K?2, K?3, and K?1 lines are compared with previous wavelength measurements. Two weaker transitions, K?5 and KOIIOIII, were also observed and the energies are compared with energies obtained from tables of known atomic energy levels.

E. L. Chupp, J. W. M. Du Mond, F. J. Gordon, R. C. Jopson, and Hans Mark

1958-11-15T23:59:59.000Z

110

NCl(b) based short wavelength chemical laser. Final report, 15 October 1992-14 February 1994  

SciTech Connect (OSTI)

Based on the results of this work, the prospects of development of a visible chemical laser based on NCl(b) are promising. NCl, in the electronically excited b-state emits to the ground state at 665 nm. The NCl b-state is generated by energy-pooling of NCl(a) and excited iodine atoms I*. All of these species can be generated from chemical reactions solely. This work has shown that: (1) In the generation of NCl, the branching ratio for NCl(a) is high. 65% of the HN3 ends up in the NCl(a) state; (2) The rate constant for the energy-pooling reaction NCl(a) + I NCl(b) is quite favorably large, approximately 10-11 cu cm/sec; (3) A gain on the order of 1x10(exp 4)/cm was obtained; and (4) Variations of the cavity ring-down experiment showed that virtually no NCl(x) is formed via reaction.

Yang, T.T.; Gylys, V.T.; Hindy, R.N.

1994-02-14T23:59:59.000Z

111

IAEA-CN/TH/P2-8 Electron Transport Driven by Short Wavelength Trapped Electron Mode Turbulence  

E-Print Network [OSTI]

(ki ~1) with larger linear growth rates grow faster and saturate first. These small scale fluctuations fluctuations can survive the shearing effects. Therefore, the small scale TEM turbulence is a viable candidate Upgrade1 and JT-60U2 experiments. The key issue is whether TEM turbulence is capable of driving a large

Lin, Zhihong

112

Micropolarizing device for long wavelength infrared polarization imaging.  

SciTech Connect (OSTI)

The goal of this project is to fabricate a four-state pixelated subwavelength optical device that enables mid-wave infrared (MWIR) or long-wave infrared (LWIR) snapshot polarimetric imaging. The polarization information can help to classify imaged materials and identify objects of interest for numerous remote sensing and military applications. While traditional, sequential polarimetric imaging produces scenes with polarization information through a series of assembled images, snapshot polarimetric imaging collects the spatial distribution of all four Stokes parameters simultaneously. In this way any noise due to scene movement from one frame to the next is eliminated. We fabricated several arrays of subwavelength components for MWIR polarization imaging applications. Each pixel unit of the array consists of four elements. These elements are micropolarizers with three or four different polarizing axis orientations. The fourth element sometimes has a micro birefringent waveplate on the top of one of the micropolarizers. The linear micropolarizers were fabricated by patterning nano-scale metallic grids on a transparent substrate. A large area birefringent waveplate was fabricated by deeply etching a subwavelength structure into a dielectric substrate. The principle of making linear micropolarizers for long wavelengths is based upon strong anisotropic absorption of light in the nano-metallic grid structures. The nano-metallic grid structures are patterned with different orientations; therefore, the micropolarizers have different polarization axes. The birefringent waveplate is a deeply etched dielectric one-dimensional subwavelength grating; therefore two orthogonally polarized waves have different phase delays. Finally, in this project, we investigated the near field and diffractive effects of the subwavelength element apertures upon detection. The fabricated pixelated polarizers had a measured extinction ratios larger than 100:1 for pixel sizes in the order of 15 {micro}m by 15 {micro}m that exceed by 7 times previously reported devices. The fabricated birefringent diffractive waveplates had a total variation of phase delay rms of 9.41 degrees with an average delay of 80.6 degrees across the MWIR spectral region. We found that diffraction effects change the requirement for separation between focal plane arrays (FPA) micropolarizer arrays and birefringent waveplates arrays, originally in the order of hundreds of microns (which are the typical substrate thickness) to a few microns or less. This new requirement leads us to propose new approaches to fabricate these devices.

Wendt, Joel Robert; Carter, Tony Ray; Samora, Sally; Cruz-Cabrera, Alvaro Augusto; Vawter, Gregory Allen; Kemme, Shanalyn A.; Alford, Charles Fred; Boye, Robert R.; Smith, Jody Lynn

2006-11-01T23:59:59.000Z

113

CORONAL MAGNETIC FIELD MEASUREMENTS THROUGH GYRORESONANCE EMISSION  

E-Print Network [OSTI]

Chapter 5 CORONAL MAGNETIC FIELD MEASUREMENTS THROUGH GYRORESONANCE EMISSION Stephen M. White This article reviews the use of gyroresonance emission at radio wavelengths to measure coronal magnetic fields. Keywords: Sun, solar corona, solar magnetic fields, solar radio emission Introduction Since the realization

White, Stephen

114

Tunnel junction multiple wavelength light-emitting diodes  

DOE Patents [OSTI]

A multiple wavelength LED having a monolithic cascade cell structure comprising at least two p-n junctions, wherein each of said at least two p-n junctions have substantially different band gaps, and electrical connector means by which said at least two p-n junctions may be collectively energized; and wherein said diode comprises a tunnel junction or interconnect. 5 figs.

Olson, J.M.; Kurtz, S.R.

1992-11-24T23:59:59.000Z

115

Wavelength-dependent scattering in spectroscopic optical coherence tomography  

E-Print Network [OSTI]

Wavelength-dependent scattering in spectroscopic optical coherence tomography Chenyang Xu, P. Scott of light scattering spectroscopy (LSS) and the spatial localization of optical coherence tomography (OCT.4500) Optical coherence tomography; (290.0290) Scattering; (300.0300) Spectroscopy References and links 1. A

Bhargava, Rohit

116

Visual Wavelength Discrimination by the Loggerhead Turtle, Caretta caretta  

E-Print Network [OSTI]

Visual Wavelength Discrimination by the Loggerhead Turtle, Caretta caretta MORGAN YOUNG1 MICHAEL Marine Laboratory, Beaufort, North Carolina 28516 Abstract. Marine turtles are visual animals, yet we was to determine whether log- gerhead turtles could discriminate between objects on the basis of color. We used

Milton, Sarah

117

Short courses in Composite Materials  

E-Print Network [OSTI]

Short courses in Composite Materials Overview The ability to tailor the material properties used. Combining the adaptability of composites with clear weight savings, whilst tailoring materials properties Airbus and Glyndr University, the Advanced Composites Training and Development Centre educates current

Davies, John N.

118

Minimize Boiler Short Cycling Losses  

SciTech Connect (OSTI)

This revised ITP tip sheet on minimizing boiler short cycling losses provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

Not Available

2006-01-01T23:59:59.000Z

119

Short-Term Energy Outlook  

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

Chart Gallery for February 2015 Short-Term Energy Outlook U.S. Energy Information Administration Independent Statistics & Analysis 0 20 40 60 80 100 120 140 160 180 200 220 Jan...

120

Interaction of magnetic resonators studied by the magnetic field enhancement  

SciTech Connect (OSTI)

It is the first time that the magnetic field enhancement (MFE) is used to study the interaction of magnetic resonators (MRs), which is more sensitive than previous parameters–shift and damping of resonance frequency. To avoid the coherence of lattice and the effect of Bloch wave, the interaction is simulated between two MRs with same primary phase when the distance is changed in the range of several resonance wavelengths, which is also compared with periodic structure. The calculated MFE oscillating and decaying with distance with the period equal to resonance wavelength directly shows the retardation effect. Simulation also shows that the interaction at normal incidence is sensitive to the phase correlation which is related with retardation effect and is ultra-long-distance interaction when the two MRs are strongly localized. When the distance is very short, the amplitude of magnetic resonance is oppressed by the strong interaction and thus the MFE can be much lower than that of single MR. This study provides the design rules of metamaterials for engineering resonant properties of MRs.

Hou, Yumin, E-mail: ymhou@pku.edu.cn [State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871 (China)] [State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871 (China)

2013-12-15T23:59:59.000Z

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


121

Small Folded Shorted-Patch Antenna R. L. Li, E. Tsai, G. DeJean, M. Tentzeris, and J. Laskar  

E-Print Network [OSTI]

Small Folded Shorted-Patch Antenna R. L. Li, E. Tsai, G. DeJean, M. Tentzeris, and J. Laskar School. microstrip patch antennas, have a significant number of advantages over conventional antennas, such as low- wave (0/2, 0 is the guide wavelength in the substrate) patch. The most straightforward approach

Tentzeris, Manos

122

Effect of nonlinear optical three-wave interaction on the lasing parameters of a dual-wavelength vertical-external-cavity surface-emitting laser  

SciTech Connect (OSTI)

The influence of nonlinear optical interaction in a semiconductor dual-wavelength vertical-external-cavity surface-emitting laser on the main parameters of dual-wavelength radiation and lasing in the long-wavelength part of the mid-IR range, obtained in this laser as a result of nonlinear wave mixing, is investigated. An increase in the pump power leads to saturation of the short-wavelength lasing intensity and to a more rapid rise in the long-wavelength lasing intensity in comparison with the linear increase in lasing intensity in these regions in the absence of nonlinear interaction. Under the conditions of nonlinear interaction, the carrier concentration in the active layers is not stabilised near the lasing threshold but changes with an increase in the pump intensity and provides the corresponding gain in the laser active region, thus maintaining steadystate lasing. Some ways for modifying the laser active region in order to obtain the most efficient lasing in the mid-IR range are proposed. (nonlinear optical phenomena)

Morozov, M Yu; Morozov, Yu A [Kotel'nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Saratov Branch, Saratov (Russian Federation); Krasnikova, I V [Yu A Gagarin Saratov State Technical University, Saratov (Russian Federation)

2013-09-30T23:59:59.000Z

123

Visible light stimulating dual-wavelength emission and O vacancy involved energy transfer behavior in luminescence for coaxial nanocable arrays  

SciTech Connect (OSTI)

We report a strategy to investigate O vacancy (V{sub O}) involved energy transfer and dual-wavelength yellow emission in coaxial nanocable. By electric field deposition and subsequent sol-gel template approach, ZnO:Tb/Y{sub 2}O{sub 3}:Eu coaxial nanocable arrays are synthesized. After visible light excitation, system is promoted to O vacancy charge transfer state of V{sub O}(0/+). In the following cross relaxation, energy transfer from V{sub O} to the excitation energy level of Tb{sup 3+} in ZnO:Tb core area. While in Y{sub 2}O{sub 3}:Eu shell area, energy transfer to the excitation energy level of Eu{sup 3+}. Subsequently, dual-wavelength emission is observed. By constructing nanocable with dual-wavelength emission, yellow luminescence is obtained. Adjust doping concentration of Eu{sup 3+} or Tb{sup 3+} in the range of 0.01–0.05, chromaticity coordinates of ZnO:Tb/Y{sub 2}O{sub 3}:Eu nanocable stably stays at yellow region in color space except ZnO:Tb{sub 0.01}/Y{sub 2}O{sub 3}:Eu{sub 0.01}. As Vo states act as media in energy transfer process in nanocablers, visible light can stimulate dual-wavelength emissions. Yellow luminescent nanocable arrays will have great applications in light-emitting diode luminescence.

Yang, Lei, E-mail: nanoyang@qq.com [College of Materials Science and Engineering, Hunan University, Changsha 410082 (China); Hunan Province Key Laboratory for Spray Deposition Technology and Application, Hunan University, Changsha 410082 (China); Dong, Jiazhang; Jiang, Zhongcheng [College of Materials Science and Engineering, Hunan University, Changsha 410082 (China); Pan, Anlian; Zhuang, Xiujuan [Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, Hunan University, Changsha 410082 (China)

2014-06-14T23:59:59.000Z

124

Three dimensional imaging detector employing wavelength-shifting optical fibers  

DOE Patents [OSTI]

A novel detector element structure and method for its use is provided. In a preferred embodiment, one or more inorganic scintillating crystals are coupled through wavelength shifting optical fibers (WLSFs) to position sensitive photomultipliers (PS-PMTs). The superior detector configuration in accordance with this invention is designed for an array of applications in high spatial resolution gamma ray sensing with particular application to SPECT, PET and PVI imaging systems. The design provides better position resolution than prior art devices at a lower total cost. By employing wavelength shifting fibers (WLSFs), the sensor configuration of this invention can operate with a significant reduction in the number of photomultipliers and electronics channels, while potentially improving the resolution of the system by allowing three dimensional reconstruction of energy deposition positions.

Worstell, William A. (Framingham, MA)

1997-01-01T23:59:59.000Z

125

Three dimensional imaging detector employing wavelength-shifting optical fibers  

DOE Patents [OSTI]

A novel detector element structure and method for its use is provided. In a preferred embodiment, one or more inorganic scintillating crystals are coupled through wavelength shifting optical fibers (WLSFs) to position sensitive photomultipliers (PS-PMTs). The superior detector configuration in accordance with this invention is designed for an array of applications in high spatial resolution gamma ray sensing with particular application to SPECT, PET and PVI imaging systems. The design provides better position resolution than prior art devices at a lower total cost. By employing wavelength shifting fibers (WLSFs), the sensor configuration of this invention can operate with a significant reduction in the number of photomultipliers and electronics channels, while potentially improving the resolution of the system by allowing three dimensional reconstruction of energy deposition positions. 11 figs.

Worstell, W.A.

1997-02-04T23:59:59.000Z

126

Oscillation signature from multi-wavelength analysis on solar chromosphere  

SciTech Connect (OSTI)

In this work, we investigate how the solar chromosphere responds to the photospheric dynamics by using tomography study, implementing multiwavelength analysis observations obtained from Dutch Open Telescope. By using high resolution, high-quality, simultaneous image sequences of multi-wavelength data, we try to obtain the oscillation signature that might play important role on chromospheric dynamic by using H-alpha (H?) as primary diagnostic tool.

Mumpuni, Emanuel Sungging, E-mail: nggieng@students.itb.ac.id [Department of Astronomy, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Ganesha 10, Bandung, Indonesia 40132 and Space Science Center, National Institute of Aeronautics and Space, Junjunan 133, Bandung 40173 (Indonesia); Herdiwijaya, Dhani [Department of Astronomy, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Ganesha 10, Bandung 40132 (Indonesia); Djamal, Mitra [Department of Physics, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Ganesha 10, Bandung 40132 (Indonesia)

2014-03-24T23:59:59.000Z

127

Dual wavelength emission from a terahertz quantum cascade laser  

SciTech Connect (OSTI)

We describe a heterogeneous THz quantum cascade laser that is composed of two different active region designs. This device emits simultaneously at around 2.5 THz and 2.9 THz with a certain frequency tunability by applied current. We also investigate the spectral gain in the structure by THz time-domain spectroscopy and correlate the gain spectral bandwidth with the alignment and wavelength emission behaviour of the two stack device.

Freeman, Joshua R.; Brewer, Anthony; Marshall, Owen P.; Beere, Harvey E.; Ritchie, David A. [Semiconductor Physics, Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE (United Kingdom); Madeo, Julien; Dhillon, Sukhdeep; Jukam, Nathan; Oustinov, Dimitri; Tignon, Jerome [Laboratoire Pierre Aigrain, Ecole Normale Suprieure, UMR 8551 CNRS, UPMC Univ. Paris 6 75005 Paris (France)

2011-12-23T23:59:59.000Z

128

Environmental Effects on TPB Wavelength-Shifting Coatings  

E-Print Network [OSTI]

The scintillation detection systems of liquid argon time projection chambers (LArTPCs) require wavelength shifters to detect the 128 nm scintillation light produced in liquid argon. Tetraphenyl butadiene (TPB) is a fluorescent material that can shift this light to a wavelength of 425 nm, lending itself well to use in these detectors. We can coat the glass of photomultiplier tubes (PMTs) with TPB or place TPB-coated plates in front of the PMTs. In this paper, we investigate the degradation of a chemical TPB coating in a laboratory or factory environment to assess the viability of long-term TPB film storage prior to its initial installation in an LArTPC. We present evidence for severe degradation due to common fluorescent lights and ambient sunlight in laboratories, with potential losses at the 40% level in the first day and eventual losses at the 80% level after a month of exposure. We determine the degradation is due to wavelengths in the UV spectrum, and we demonstrate mitigating methods for retrofitting lab and factory environments.

C. S. Chiu; C. Ignarra; L. Bugel; H. Chen; J. M. Conrad; B. J. P. Jones; T. Katori; I. Moult

2012-04-25T23:59:59.000Z

129

SHORT RESEARCH NOTE Field evidence of dispersal of branchiopods, ostracods  

E-Print Network [OSTI]

:255­261 DOI 10.1007/s10750-009-9975-6 #12;Freshwater invertebrates occur in isolated habitats surrounded

Green, Andy J.

130

Short Communication The Anterior Midline Field: Coercion or decision making?  

E-Print Network [OSTI]

into an eventive meaning in order to match the semantic properties of the event-selecting verb (e.g., `the author encodes that activity meaning. Where does meaning come from when it does not come from the syntax of the coercing noun [Pylkkänen, L., & McElree, B. (2007). An MEG study of silent meaning. Journal of Cognitive

Pylkkänen, Liina

131

Ultrafast laser induced periodic sub-wavelength aluminum surface structures and nanoparticles in air and liquids  

SciTech Connect (OSTI)

In this communication, we demonstrate the generation of laser-induced periodic sub-wavelength surface structures (LIPSS) or ripples on a bulk aluminum (Al) and Al nanoparticles (NPs) by femtosecond (fs) laser direct writing technique. Laser irradiation was performed on Al surface at normal incidence in air and by immersing in ethanol (C{sub 2}H{sub 5}OH) and water (H{sub 2}O) using linearly polarized Ti:sapphire fs laser pulses of ?110 fs pulse duration and ?800?nm wavelength. Field emission scanning electron microscope is utilized for imaging surface morphology of laser written structures and it reveals that the spatial periodicity as well as the surface morphology of the LIPSS depends on the surrounding dielectric medium and also on the various laser irradiation parameters. The observed LIPSS have been classified as low spatial frequency LIPSS which are perpendicularly oriented to the laser polarization with a periodicity from 460 to 620?nm and high spatial frequency LIPSS which spectacles a periodicity less than 100?nm with the orientation parallel to the polarization of the incident laser beam. Fabricated colloidal solutions, which contain the Al NPs, were characterized by UV-Vis absorption spectroscopy and transmission electron microscopy (TEM). TEM results reveal the formation of internal cavities in Al NPs both in ethanol and water. Formation mechanism of LIPSS and cavities inside the nanoparticles are discussed in detail.

Kuladeep, Rajamudili; Dar, Mudasir H.; Rao, D. Narayana, E-mail: dnrsp@uohyd.ac.in, E-mail: dnr-laserlab@yahoo.com [School of Physics, University of Hyderabad, Hyderabad 500046 (India); Deepak, K. L. N. [Department of Physics and Center for Research in Photonics, University of Ottawa, 150 Louis Pasteur, Ottawa K1N6N5, Ontario (Canada)

2014-09-21T23:59:59.000Z

132

Maximal Wavelength of Confined Quarks and Gluons and Properties of Quantum Chromodynamics  

SciTech Connect (OSTI)

Because quarks and gluons are confined within hadrons, they have a maximum wavelength of order the confinement scale. Propagators, normally calculated for free quarks and gluons using Dyson-Schwinger equations, are modified by bound-state effects in close analogy to the calculation of the Lamb shift in atomic physics. Because of confinement, the effective quantum chromodynamic coupling stays finite in the infrared. The quark condensate which arises from spontaneous chiral symmetry breaking in the bound state Dyson-Schwinger equation is the expectation value of the operator {bar q}q evaluated in the background of the fields of the other hadronic constituents, in contrast to a true vacuum expectation value. Thus quark and gluon condensates reside within hadrons. The effects of instantons are also modified. We discuss the implications of the maximum quark and gluon wavelength for phenomena such as deep inelastic scattering and annihilation, the decay of heavy quarkonia, jets, and dimensional counting rules for exclusive reactions. We also discuss implications for the zero-temperature phase structure of a vectorial SU(N) gauge theory with a variable number N{sub f} of massless fermions.

Brodsky, Stanley J.; /SLAC /YITP, Stony Brook /Durham U.; Shrock, Robert; /YITP, Stony Brook

2008-08-01T23:59:59.000Z

133

University Policy Process Short Version  

E-Print Network [OSTI]

Rev. 5/09 University Policy Process Short Version Conduct Analysis Draft Documents Get Approvals. Identify policy owner 3. Assemble team 4. Engage Stakeholders 5. Draft policy 6. Submit proposed policy approves (or not) Do we need a policy? 11. Plan communication & training 12. UPO posts approved policy

Mohanty, Saraju P.

134

Electromagnetic neutrino: a short review  

E-Print Network [OSTI]

A short review on selected issues related to the problem of neutrino electromagnetic properties is given. After a flash look at the theoretical basis of neutrino electromagnetic form factors, constraints on neutrino magnetic moments and electric millicharge from terrestrial experiments and astrophysical observations are discussed. We also focus on some recent studies of the problem and on perspectives.

Alexander I. Studenikin

2014-11-09T23:59:59.000Z

135

SHORT REVIEW Butterfly genomics eclosing  

E-Print Network [OSTI]

SHORT REVIEW Butterfly genomics eclosing P Beldade1 , WO McMillan2 and A Papanicolaou3 1 Section to an explosion of genomic data and the emergence of new research avenues. Evolutionary and ecological functional genomics, with its focus on the genes that affect ecological success and adaptation in natural populations

Beldade, PatrĂ­cia

136

Role of laser pre-pulse wavelength and inter-pulse delay on signal enhancement in collinear double-pulse laser-induced  

E-Print Network [OSTI]

used in laser-produced plasma (LPP) for x-ray [20,21] and EUV emission enhancement [22,23]. The DP applications in the fields of microscopy, lithography and x-ray laser. Compared to single-pulse LIBS, DPLIBSRole of laser pre-pulse wavelength and inter-pulse delay on signal enhancement in collinear double

Harilal, S. S.

137

Effects of Laser Energy and Wavelength on the Analysis of LiFePO4...  

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

Laser Energy and Wavelength on the Analysis of LiFePO4 Using Laser Assisted Atom Probe Tomography. Effects of Laser Energy and Wavelength on the Analysis of LiFePO4 Using Laser...

138

Multi-Color Laser Spectroscopy with a Dual-Wavelength Quantum Cascade Laser  

Science Journals Connector (OSTI)

A new concept of multi-color spectroscopy based on a dual-wavelength QCL is presented. The latter emits at two distinct wavelengths (5.26 and 6.25 µm), featuring simultaneous...

Jágerská, Jana; Jouy, Pierre; Tuzson, Béla; Looser, Herbert; Hugi, Andreas; Mangold, Markus; Soltic, Patrik; Emmenegger, Lukas; Faist, Jérôme

139

Simultaneous dual-wavelength reflection digital holography applied to the study of the porous coal samples  

Science Journals Connector (OSTI)

We present a simultaneous dual-wavelength phase-imaging digital holographic technique demonstrated on porous coal samples. The use of two wavelengths enables us to increase the axial...

Khmaladze, Alexander; Restrepo-Martínez, Alejandro; Kim, Myung; Castańeda, Roman; Blandón, Astrid

2008-01-01T23:59:59.000Z

140

Long-Distance FBG Sensor System Using High-Speed Swept-Wavelength Light Source  

Science Journals Connector (OSTI)

A long-distance FBG sensor system using a power controlled high-speed swept-wavelength light source is proposed and demonstrated. This system can measure FBGs reflection wavelengths...

Saitoh, Takanori; Nakamura, Kenichi; Takahashi, Yoshifumi; Iida, Hiroyuki; Iki, Yoshimitsu; Miyagi, Koichiro

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


141

Spatiotemporal focusing dynamics in plasmas at X-ray wavelength  

SciTech Connect (OSTI)

Using a finite curvature beam, we investigate here the spatiotemporal focusing dynamics of a laser pulse in plasmas at X-ray wavelength. We trace the dependence of curvature parameter on the focusing of laser pulse and recognize that the self-focusing in plasma is more intense for the X-ray laser pulse with curved wavefront than with flat wavefront. The simulation results demonstrate that spatiotemporal focusing dynamics in plasmas can be controlled with the appropriate choice of beam-plasma parameters to explore the high intensity effects in X-ray regime.

Sharma, A., E-mail: a-physics2001@yahoo.com; Tibai, Z. [Institute of Physics, University of Pecs, Pecs–7624 (Hungary)] [Institute of Physics, University of Pecs, Pecs–7624 (Hungary); Hebling, J. [Institute of Physics, University of Pecs, Pecs–7624 (Hungary) [Institute of Physics, University of Pecs, Pecs–7624 (Hungary); Szentagothai Research Centre, University of Pecs, Pecs-7624 (Hungary); Mishra, S. K. [Institute for Plasma Research, Gandhinagar (India)] [Institute for Plasma Research, Gandhinagar (India)

2014-03-15T23:59:59.000Z

142

Multiplexed absorption tomography with calibration-free wavelength modulation spectroscopy  

SciTech Connect (OSTI)

We propose a multiplexed absorption tomography technique, which uses calibration-free wavelength modulation spectroscopy with tunable semiconductor lasers for the simultaneous imaging of temperature and species concentration in harsh combustion environments. Compared with the commonly used direct absorption spectroscopy (DAS) counterpart, the present variant enjoys better signal-to-noise ratios and requires no baseline fitting, a particularly desirable feature for high-pressure applications, where adjacent absorption features overlap and interfere severely. We present proof-of-concept numerical demonstrations of the technique using realistic phantom models of harsh combustion environments and prove that the proposed techniques outperform currently available tomography techniques based on DAS.

Cai, Weiwei; Kaminski, Clemens F., E-mail: cfk23@cam.ac.uk [Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB2 3RA (United Kingdom)

2014-04-14T23:59:59.000Z

143

Broadband laser diode emitting at 1. 28. mu. m wavelength  

SciTech Connect (OSTI)

This letter presents a broadband laser diode (LD) emitting at the 1.28 ..mu..m wavelength fabricated by introducing an absorption region (300 ..mu..m long) into a conventional 600-..mu..m-long InGaAsP laser diode. The LD operates by the pulsed modulation of a high peak current whose repetition rate and duty cycle are respectively 200 kHz and 5%. The typical output power and the spectral width of the LD are 3.8 mW and 58 A, and the measured coherence length is 210 ..mu..m.

Takada, K.; Noda, J.

1985-10-15T23:59:59.000Z

144

Dynamic Multi-Wavelength GPON (DMW-GPON) Protocol A. Gliwan, P. Kourtessis, J. M. Senior  

E-Print Network [OSTI]

Dynamic Multi-Wavelength GPON (DMW-GPON) Protocol A. Gliwan, P. Kourtessis, J. M. Senior Science (GPON) upstream map frame format enhancement has been developed to support dynamic multi wavelength (DMW the supported wavelengths. OPNET modelling of the performance characteristics of the DMW-GPON Fibre

Haddadi, Hamed

145

Broadband precision wavelength meter based on a stepping FabryProt interferometer  

E-Print Network [OSTI]

Broadband precision wavelength meter based on a stepping Fabry­Pérot interferometer T. J. Scholl. INTRODUCTION Wavelength meters based on Michelson or Fizeau inter- ferometers have long been the standard a more general laser wavelength meter in which the FP ring pattern was employed to compare

Rehse, Steven J.

146

XAS Short Course March 2007  

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

Location Location Application Registration Visitor Information Transportation Tourism & Dining XAS Short Course March 2007 March 13-16 The Structural Molecular Biology BioXAS group will host an X-ray Absorption Spectroscopy (XAS) Short Course at SSRL from March 13-16. The training will include two days of lectures which will cover basic theory, experimental considerations, and applications. The lectures will be followed by two days of rotating practical sessions, which will include hands-on data collection at the beam line and data analysis. Participants are encouraged to bring their own samples to test feasibility for future data collection. Space will be limited to 16 participants, so early application is encouraged and will be available soon through the SSRL website. For more information,

147

The Particle Adventure | How do we detect what's happening? | Wavelength -  

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

detect what's happening? > detect what's happening? > Wavelength - The cave Wavelength - The cave A Cave Pretend that you are unlucky enough to fall into a cave without a flashlight. A Basketball However, you are lucky enough to have a bucket of glow-in-the-dark basketballs. Suddenly, you hear a snuffling sound. Is it a blood-thirsty bear, or merely your friends playing a practical joke on you? To find out, you desperately toss the basketballs in the direction of the snuffling sound, and memorize where the basketballs hit. Thus, you rapidly figure out the following outline of the being in front of you: Yikes! Since your basketballs are so big, when they bounce off the thing in front of you, all you can learn about its shape is that it is wide and tall. A Tennis ball Fortunately, you ALSO brought a bag of glow-in-the-dark tennis balls. You toss these in the direction of the snuffling, and are rewarded with the following image:

148

Two-dimensional kinetic model of short high-current vacuum-arc discharge  

Science Journals Connector (OSTI)

A two-dimensional mathematical model of a short high-current vacuum-arc discharge is developed, according to which magnetized electrons ... a free flight regime in a two-dimensional electric field. The proposed m...

Ya. I. Londer; K. N. Ul’yanov

2010-03-01T23:59:59.000Z

149

Laser Action at High k-Space Values in Anti-Correlated Multi-Wavelength Quantum Cascade Lasers  

Science Journals Connector (OSTI)

A two-wavelength Quantum Cascade laser is reported in which one wavelength lases between subband states high in the k-space. Laser action at the two wavelengths is strongly...

Menzel, Stefan; Franz, Kale J; Wasserman, Daniel; Hoffman, Anthony J; Cockburn, John W; Gmachl, Claire F

150

Phase-shifting point-diffraction interferometry at EUV wavelengths  

SciTech Connect (OSTI)

A novel phase-shifting point-diffraction interferometer (PS/PDI) operating at the Advanced Light Source (ALS) is being used to perform wavefront-measuring metrology at 13.4-nm wavelength to characterize aberrations in a multilayer-coated 10x Schwarzschild objective designed for extreme ultraviolet (EUV) projection lithography experiments. To achieve 0.1-micron critical dimension pattern transfer with EUV projection lithography at 13.4-nm wavelength, nearly diffraction-limited all-reflective multilayer-coated optical systems with 0.1 numerical aperture are required. The EUV wavefront, determined by the mirror surfaces and the reflective multilayer coatings, is measurable only at the operational wavelength of the system. The authors goal is to measure the EUV wavefront to an accuracy of 0.01 waves rms (0.13 nm). The PS/PDI is a type of point-diffraction interferometer, modified for significantly improved throughput and phase-shifting capability. The interferometer design utilizes a grating beamsplitter and pinhole spatial filters in the object and image planes of the optical system under test. The 10x-reduction Schwarzschild objective, with image-side numerical aperture of 0.08, is illuminated by a sub-micron pinhole in the object plane. A coarse, 20-micron pitch grating placed between the illumination pinhole and the Schwarzschild system serves a dual role as a small-angle beam-splitter and a phase-shifting element. The first-order diffracted beam from the grating is spatially filtered in the image plane of the Schwarzschild with a sub-100-nm pinhole and becomes the `D reference` wave in the interferometer. The zero-order beam is the `test` wave, and it passes unobstructed through a 4.5-{mu}m window in the image plane. The test and reference beams are separated by several microns in the image plane to minimize beam overlap. The interference fringes are recorded with a CCD detector placed about 12 cm from the Schwarzschild image plane.

Goldberg, K.A.; Tejnil, E.; Sang Lee [Ernest Orlando Lawrence Berkeley National Lab., CA (United States)] [and others

1997-04-01T23:59:59.000Z

151

Ultra-short pulse generator  

DOE Patents [OSTI]

An inexpensive pulse generating circuit is disclosed that generates ultra-short, 200 picosecond, and high voltage 100 kW, pulses suitable for wideband radar and other wideband applications. The circuit implements a nonlinear transmission line with series inductors and variable capacitors coupled to ground made from reverse biased diodes to sharpen and increase the amplitude of a high-voltage power MOSFET driver input pulse until it causes non-destructive transit time breakdown in a final avalanche shock wave diode, which increases and sharpens the pulse even more. 5 figures.

McEwan, T.E.

1993-12-28T23:59:59.000Z

152

Ultra-short pulse generator  

DOE Patents [OSTI]

An inexpensive pulse generating circuit is disclosed that generates ultra-short, 200 picosecond, and high voltage 100 kW, pulses suitable for wideband radar and other wideband applications. The circuit implements a nonlinear transmission line with series inductors and variable capacitors coupled to ground made from reverse biased diodes to sharpen and increase the amplitude of a high-voltage power MOSFET driver input pulse until it causes non-destructive transit time breakdown in a final avalanche shockwave diode, which increases and sharpens the pulse even more.

McEwan, Thomas E. (Livermore, CA)

1993-01-01T23:59:59.000Z

153

Spectral narrowing effect by quasi-phase continuous tuning in high-speed wavelength-swept light source  

Science Journals Connector (OSTI)

This paper reports on a technique to improve the coherence length of a high-speed wavelength swept laser. The wavelength swept laser comprises a pigtailed semiconductor optical...

Chong, Changho; Suzuki, Takuya; Morosawa, Atsushi; Sakai, Tooru

2008-01-01T23:59:59.000Z

154

Short rotation Wood Crops Program  

SciTech Connect (OSTI)

This report synthesizes the technical progress of research projects in the Short Rotation Woody Crops Program for the year ending September 30, 1989. The primary goal of this research program, sponsored by the US Department of Energy's Biofuels and Municipal Waste Technology Division, is the development of a viable technology for producing renewable feedstocks for conversion to biofuels. One of the more significant accomplishments was the documentation that short-rotation woody crops total delivered costs could be $40/Mg or less under optimistic but attainable conditions. By taking advantage of federal subsidies such as those offered under the Conservation Reserve Program, wood energy feedstock costs could be lower. Genetic improvement studies are broadening species performance within geographic regions and under less-than-optimum site conditions. Advances in physiological research are identifying key characteristics of species productivity and response to nutrient applications. Recent developments utilizing biotechnology have achieved success in cell and tissue culture, somaclonal variation, and gene-insertion studies. Productivity gains have been realized with advanced cultural studies of spacing, coppice, and mixed-species trials. 8 figs., 20 tabs.

Wright, L.L.; Ehrenshaft, A.R.

1990-08-01T23:59:59.000Z

155

SHORT-TUBE SUBCRITICAL FLOW Enerag Division  

E-Print Network [OSTI]

#12;SHORT-TUBE SUBCRITICAL FLOW Y. C. Mei Enerag Division Oak Ridge National Laboratory Oak Ridge-tube subcritical flow. For short tubes used as refrigerant expansion devices, the orifice model is found inadequate-TUBE SUBCRITICAL FLOW INTRODUCTION Much theoretical and experimental work regarding short tube fluid flow has

Oak Ridge National Laboratory

156

Long wavelength gradient drift instability in Hall plasma devices. II. Applications  

SciTech Connect (OSTI)

Hall plasma devices with electron E × B drift are subject to a class of long wavelength instabilities driven by the electron current, gradients of plasma density, temperature, and magnetic field. In the first companion paper [Frias et al., Phys. Plasmas 19, 072112 (2012)], the theory of these modes was revisited. In this paper, we apply analytical theory to show that modern Hall thrusters exhibit azimuthal and axial oscillations in the frequency spectrum from tens KHz to few MHz, often observed in experiments. The azimuthal phase velocity of these modes is typically one order of magnitude lower than the E × B drift velocity. The growth rate of these modes scales inversely with the square root of the ion mass, ?1/?(m){sub i}. It is shown that several different thruster configurations share the same common feature: the gradient drift instabilities are localized in two separate regions, near the anode and in the plume region, and absent in the acceleration region. Our analytical results show complex interaction of plasma and magnetic field gradients and the E × B drift flow as the sources of the instability. The special role of plasma density gradient is revealed and it is shown that the previous theory is not applicable in the region where the ion flux density is not uniform. This is particularly important for near anode region due to ionization and in the plume region due to diverging ion flux.

Frias, Winston; Smolyakov, Andrei I. [Department of Physics and Engineering Physics, University of Saskatchewan, 116 Science Place, Saskatoon SK S7N 5E2 (Canada)] [Department of Physics and Engineering Physics, University of Saskatchewan, 116 Science Place, Saskatoon SK S7N 5E2 (Canada); Kaganovich, Igor D.; Raitses, Yevgeny [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)] [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)

2013-05-15T23:59:59.000Z

157

Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

3 3 1 Short-Term Energy Outlook April 2003 Overview World Oil Markets. Crude oil prices fell sharply at the onset of war in Iraq, but the initial declines probably overshot levels that we consider to be generally consistent with fundamental factors in the world oil market. Thus, while near-term price averages are likely to be below our previous projections, the baseline outlook for crude oil prices (while generally lower) is not drastically different and includes an average for spot West Texas Intermediate (WTI) that is close to $30 per barrel in 2003 (Figure 1). The mix of uncertainties related to key oil production areas has changed since last month, as Venezuelan production has accelerated beyond previous estimates while Nigerian output has been reduced due to internal conflict.

158

Rogue waves for a long wave-short wave resonance model with multiple short waves  

E-Print Network [OSTI]

1 Rogue waves for a long wave-short wave resonance model with multiple short waves Hiu Ning Chan (1 waves; Long-short resonance PACS Classification: 02.30.Jr; 05.45.Yv; 47.35.Fg #12;2 ABSTRACT A resonance between long and short waves will occur if the phase velocity of the long wave matches the group velocity

159

Programmable two-port polarization independent electro-optically tunable wavelength filter in lithium niobate  

E-Print Network [OSTI]

?) conditions????????????????.. 21 10 Simulated PCE as a function of detuning wavelength, with N=1440 periods at 1530nm wavelength????????????.. 23 11 Polarization converter sections in series.??????????????. 24 12 Electrodes structure of previous EOTFs... the power conversion efficiency (PCE) as 23 2 1 2 22 2 1 22 2 ? PCE B(L) sin[(??) L] (??) == + + (45) where L is length of the polarization conversion region. The calculated PCE as a function of detuning wavelength ?? with a total number of periods N...

Ping, Yang

2009-05-15T23:59:59.000Z

160

Development of in situ, at-wavelength metrology for soft x-ray nano-focusing  

SciTech Connect (OSTI)

At the Advanced Light Source (ALS), we are developing broadly applicable, high-accuracy, in situ, at-wavelength wavefront slope measurement techniques for Kirkpatrick-Baez (KB) mirror nano-focusing. We describe here details of the metrology beamline endstation, the at-wavelength tests, and an original alignment method that have already allowed us to precisely set a bendable KB mirror to achieve a FWHM focused spot size of ~;;120 nm, at 1-nm soft x-ray wavelength.

Yuan, Sheng Sam; Yashchuk, Valeriy V.; Goldberg, Kenneth A.; Celestre, Richard; McKinney, Wayne R.; Morrison, Gregory Y.; Warwick, Tony; Padmore, Howard A.

2010-09-19T23:59:59.000Z

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


161

Digital Frequency Domain Multiplexer for mm-Wavelength Telescopes  

SciTech Connect (OSTI)

An FPGA based digital signal processing (DSP) system for biasing and reading out multiplexed bolometric detectors for mm-wavelength telescopes is presented. This readout system is being deployed for balloon-borne and ground based cosmology experiments with the primary goal of measuring the signature of inflation with the Cosmic Microwave Background Radiation. The system consists of analog superconducting electronics running at 250 mK and 4 K, coupled to digital room temperature backend electronics described here. The digital electronics perform the real time functionality with DSP algorithms implemented in firmware. A soft embedded processor provides all of the slow housekeeping control and communications. Each board in the system synthesizes multi-frequency combs of 8 to 32 carriers in the MHz band to bias the detectors. After the carriers have been modulated with the sky-signal by the detectors, the same boards digitize the comb directly. The carriers are mixed down to base-band and low pass filtered. The signal bandwidth of 0.050Hz-100 Hz places extreme requirements on stability and requires powerful filtering techniques to recover the sky-signal from the MHz carriers.

Spieler, Helmuth G; Dobbs, Matt; Bissonnette, Eric; Spieler, Helmuth G.

2007-07-23T23:59:59.000Z

162

Some optical properties of graphite from IR to millimetric wavelengths  

Science Journals Connector (OSTI)

......powder obtained by striking an electric arc from graphitic electrodes in an...the material from the exciting electric field and more energy is scattered...graphitic material from electrical discharges in various gases, TH, BE, XY......

Robert J. Papoular; Renaud Papoular

2014-10-01T23:59:59.000Z

163

Plastic Identification Sensor with Five Wavelength Laser Diodes Used in Recycling Robot  

Science Journals Connector (OSTI)

Plastic identification is a key technology for recycling. Six different types of plastics are identified by a sensor with five wavelengths lasers. The new plastic recycling robots,...

Kawata, Satoshi; Inada, Koji; Hirao, Tadaetsu; Fujita, Toshihiro; Aubuchon, Roger

164

Calibration-free wavelength modulation spectroscopy applications from combustion to medical science  

Science Journals Connector (OSTI)

Calibration-free wavelength modulation spectroscopy was employed for measuring temperature and H2O concentration in combustion environments with a near-infrared DFB-laser,...

Qu, Zhechao; Schmidt, Florian

165

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

Science Journals Connector (OSTI)

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

Langan, P.

2004-03-17T23:59:59.000Z

166

Stabilized dual-wavelength fiber-optic interferometer for vibration measurement  

Science Journals Connector (OSTI)

A stabilized fiber-optic interferometer was developed for vibration measurement by using two laser diodes of different wavelengths and one polarization-maintaining fiber. Passive...

Wright, O B

1991-01-01T23:59:59.000Z

167

E-Print Network 3.0 - absorbing long-wavelength light Sample...  

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

be achieved in a structure with long-wavelength... and Marin Soljacic Abstract Selective solar absorbers generally ... Source: Soljai, Marin - Research Laboratory of...

168

A variable-wavelength-based approach of phase retrieval for contrast transfer function based methods  

Science Journals Connector (OSTI)

Application of a multi-wavelength approach for phase retrieval within the framework of the contrast transfer function based formalism is discussed.

Kashyap, Y.S.

2010-09-02T23:59:59.000Z

169

Stability of Interfaces with Self-Gravity, Relative Flow, and {ital B} Field  

SciTech Connect (OSTI)

Observations with the {ital Hubble} {ital Space} {ital T}{ital elescope} (Hester et al.) of spectacular {open_quotes}fingers{close_quotes} or {open_quotes}elephant trunks{close_quotes} of gas protruding from a large star-forming cloud in the Eagle Nebula stimulate renewed interest in the stability of interfaces between different media in molecular clouds. Instability and nonlinear growth of crenelations of interfaces can lead to mass concentrations that in turn lead to star formation. In an earlier study of the stability of interfaces, we took into account the important physical effects{emdash}the different densities and temperatures of the media, the relative motion (Kelvin-Helmholtz instability), the gravitational acceleration perpendicular to the interface (Rayleigh-Taylor instability), and self-gravity. A new {ital self}-{ital gravitational} {ital instability} of an interface was found that was independent of the wavelength of the perturbation. At short wavelengths, the perturbations are essentially distortional, but compression becomes important as the Jeans length is approached from below. The {ital e}-folding time for the instability is comparable with the free-fall collapse time for the denser fluid. In the present work, we generalize our earlier theory in two ways: by including ordered magnetic fields parallel to the interface, and by examining the stability of long cylindrical interfaces. We show that dynamically important magnetic fields in the media can quench instabilities if the fields are oriented in different directions (that is, crossed); however, for astronomically plausible geometries in which the fields are closer to being parallel, but of different strengths in the two media, instabilities are free to grow in directions normal to the fields. A cylindrical interface between an interior medium of density {rho}{sub 1} and an exterior medium of density {rho}{sub 2} provides a model for the long filaments of dense gas observed in some molecular clouds. We show that such an interface with {rho}{sub 1} {gt} {rho}{sub 2} is stable to {open_quotes}kink modes{close_quotes} but unstable to {open_quotes}sausage modes{close_quotes} owing to self-gravity for long axial wavelengths, {lambda}{sub {ital z}} {gt} 3.8{ital d}, where {ital d} is the diameter of the cylinder. This instability will tend to form prolate ellipsoidal density concentrations aligned with the cylinder axis. {copyright} {ital {copyright} .} {ital The American Astronomical Society}

Hunter, J.H. Jr. [Department of Astronomy, University of Florida, PO Box 112005, Gainesville, FL 32611-2055 (United States)] [Department of Astronomy, University of Florida, PO Box 112005, Gainesville, FL 32611-2055 (United States); Whitaker, R.W. [Los Alamos National Laboratory, EES-8, MS F659, Los Alamos, NM 87545 (United States)] [Los Alamos National Laboratory, EES-8, MS F659, Los Alamos, NM 87545 (United States); Lovelace, R.V. [Department of Astronomy, Cornell University, Ithaca, NY 14853-6801 (United States)] [Department of Astronomy, Cornell University, Ithaca, NY 14853-6801 (United States)

1998-12-01T23:59:59.000Z

170

The short stay surgical center: an analysis.  

E-Print Network [OSTI]

??The Short Stay Surgical Center at West Valley Hospital in Encino, California, was incorporated into the hospital's services package in an effort to provide efficient… (more)

Weber, Bruce Francis

1974-01-01T23:59:59.000Z

171

Short-Term Energy Outlook September 2013  

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

September 2013 1 September 2013 Short-Term Energy Outlook (STEO) Highlights Monthly average crude oil prices increased for the fourth consecutive month in August 2013, as...

172

Fully Integrated NxN MEMS Wavelength Selective Switch with 100% Colorless Add-Drop Ports  

E-Print Network [OSTI]

Fully Integrated NxN MEMS Wavelength Selective Switch with 100% Colorless Add-Drop Ports Shifu Yuan/drop ports. © 2007 Optical Society of America OCIS codes: (060.2330) Fiber optics communications; (060 multi-port wavelength selective switches using liquid crystal devices. Micro-Electro-Mechanical System

Bowers, John

173

Nonblocking WDM Switches Based on Arrayed Waveguide Grating and Limited Wavelength  

E-Print Network [OSTI]

, SUNY at Buffalo, Amherst, NY 14260, USA. qiao@cse.buffalo.edu Abstract--- Constructing wavelength of what wavelength it will be on. In this paper, we give novel constructions of strictly non­ blocking packet/burst switching. As far as we know, these are the first of such constructions. I. INTRODUCTION

Ngo, Hung Q.

174

Nonblocking WDM Switches Based on Arrayed Waveguide Grating and Limited Wavelength  

E-Print Network [OSTI]

, SUNY at Buffalo, Amherst, NY 14260, USA. qiao@cse.buffalo.edu Abstract-- Constructing wavelength of what wavelength it will be on. In this paper, we give novel constructions of strictly non- blocking packet/burst switching. As far as we know, these are the first of such constructions. I. INTRODUCTION

Ngo, Hung Q.

175

Extremely fine-pitch printing with a 10 Schwarzschild optic at extreme ultraviolet wavelengths  

E-Print Network [OSTI]

(NA), all reflective systems. Two-mirror, 10Ă?-demagnification Schwarzschild optical systems have beenExtremely fine-pitch printing with a 10Ă? Schwarzschild optic at extreme ultraviolet wavelengths wavelength, 10Ă?-demagnification Schwarzschild optical system to expose high- resolution test patterns

Bokor, Jeffrey

176

Dry friction between laser-patterned surfaces: Role of alignment, structural wavelength and  

E-Print Network [OSTI]

1 Dry friction between laser-patterned surfaces: Role of alignment, structural wavelength.gachot@mx.uni-saarland.de Abstract The ability to tune friction by tailoring surface topographies at micron length scales friction between laser-textured surfaces. Line-like laser patterns with varying structural wavelengths

Mueser, Martin

177

Widely Tunable 10 Gbps Separate Absorption and Modulation Mach-Zehnder Wavelength  

E-Print Network [OSTI]

of an InGaAs n-contact layer, n-InP cladding, InGaAsP waveguide and a set of seven quantum wells all grown1 Widely Tunable 10 Gbps Separate Absorption and Modulation Mach-Zehnder Wavelength Converter A A fully monolithic separate absorption and modulation region wavelength converter requiring no bias tees

Coldren, Larry A.

178

Wavelength-modulation laser hygrometer for ultrasensitive detection of water vapor in  

E-Print Network [OSTI]

- bines wavelength-modulation absorption spectros- copy WMS 12­16 that uses near-infrared InGaAsP diode is measured by use of a near-infrared diode laser and wavelength-modulation absorption spectroscopy. Humidity in the spectral regions of strongest water absorption. Sensitive single-mode cavity ring-down techniques based

179

Measurement of the Speed of Light. II. Wavelength Measurements and Conclusion  

Science Journals Connector (OSTI)

30 June 1977 research-article Measurement of the Speed of Light. II. Wavelength Measurements and Conclusion T. G...this wavelength measurement leads to a value for the speed of light in vacuum of 299 792 459.0 0.6 m/s (Blaney et...

1977-01-01T23:59:59.000Z

180

Laser warning receiver to identify the wavelength and angle of arrival of incident laser light  

DOE Patents [OSTI]

A laser warning receiver is disclosed which has up to hundreds of individual optical channels each optically oriented to receive laser light from a different angle of arrival. Each optical channel has an optical wedge to define the angle of arrival, and a lens to focus the laser light onto a multi-wavelength photodetector for that channel. Each multi-wavelength photodetector has a number of semiconductor layers which are located in a multi-dielectric stack that concentrates the laser light into one of the semiconductor layers according to wavelength. An electrical signal from the multi-wavelength photodetector can be processed to determine both the angle of arrival and the wavelength of the laser light.

Sinclair; Michael B. (Albuquerque, NM); Sweatt, William C. (Albuquerque, NM)

2010-03-23T23:59:59.000Z

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


181

Testing varying neutrino mass with short gamma ray bursts  

Science Journals Connector (OSTI)

In this paper we study the possibility of probing for the absolute neutrino mass and its variation with short gamma ray burst (GRB). We have calculated the flight time difference between a massive neutrino and a photon in two different approaches to the mass varying neutrinos. Firstly we parametrize the neutrino mass as a function of the redshift in a model independent way, then we consider two specific models where the neutrino mass varies during the evolution of the quintessence fields. Our calculations show in general the value of the time delay is changed substantially relative to a constant neutrino mass and is also expected to be larger than the duration time of the short GRB.

Hong Li; Zigao Dai; Xinmin Zhang

2005-06-07T23:59:59.000Z

182

Video Production For Short Educational Videos  

E-Print Network [OSTI]

. Do some research and visit stores where you can play with equipment. Check out the article on Desk ex- amples and prices. Introduction Short educational videos are an alternative educational tool to help you succeed in producing your own short educational video. This handbook has been developed

183

Short stay visa for the Netherlands  

E-Print Network [OSTI]

Short stay visa for the Netherlands #12;1. Why this publication? 2. Who is this publication. Application procedure 7. What should you do on arriving in the Netherlands? 8. Costs 9. Exceptional 15 Contents Immigration and Naturalisation Service | Short stay visa for the Netherlands 2 #12;This

van Suijlekom, Walter

184

Configurations for short period rf undulators  

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

Several configurations for rf undulators energized at millimeter wavelengths and designed to produce coherent nanometer radiation from sub-GeV electron beams are analyzed and compared with one another. These configurations include a traveling-wave resonant ring, a standing wave resonator, and a resonator operating close to cutoff.

Kuzikov, S. V.; Jiang, Y.; Marshall, T. C.; Sotnikov, G. V.; Hirshfield, J. L.

2013-07-01T23:59:59.000Z

185

Practice Field Practice Field  

E-Print Network [OSTI]

Courts Soccer Field Swimming pool Bandeen Hall Mountain House # 3 # 2 Golf Course Security Patterson Hall.B. Scott Arena Library Centennial Theater Mc Greer Hall Pollack Hall New Johnson Science Building Dewhurst Dining Hall Champlain Regional College # 4 Mackinnon Hall Residence # 6 Memorial House Retired Faculty

186

Gain and efficiency of a short traveling wave heat engine  

Science Journals Connector (OSTI)

Gain and efficiency equations are derived for a traveling wave heat engine which has a regenerator that is SHORT compared to an acoustic wavelength. A traveling wave heat engine is a modified Stirling engine in which acoustical waves replace the usual pistons and energy is transformed from thermal to acoustical forms and vice?versa depending on the wave direction. A previous paper examined the energy transformation process for isothermal wave propagation in an infinite regenerator having a temperature gradient [P. H. Ceperley J. Acoust. Soc. Am. 7 2 1688–1694 (1982)]. Similar to that paper the present paper assumes: small amplitude waves nonturbulent flow a constant heat exchange coefficient and no regenerator end effects. In contrast the present paper assumes that the wave impedance is NOT determined by the regenerators’s properties but is instead set by the acoustical circuit exterior to the regenerator. In this paper the normalized power gain and efficiency are calculated and graphed as functions of dimensionless variables. For acoustical impedances of freely propagating waves and a Prandtl number of 0.7 the efficiency is limited to 10% of Carnot efficiency due to viscous losses in the regenerator. Higher efficiencies are possible with higher impedances e.g. if the impedance is multiplied by 10 79% of Carnot efficiencies are possible. Methods of achieving such impedances are discussed. Traveling waveheat pumps are similarly modeled and have comparable potential efficiencies.

Peter H. Ceperley

1985-01-01T23:59:59.000Z

187

Gain and efficiency of a short traveling wave heat engine  

Science Journals Connector (OSTI)

Gain and efficiency equations are derived and evaluated for a traveling wave heat engine having a regenerator of short length compared with an acoustic wavelength. A traveling wave heat engine is a modified Stirling engine in which acoustic waves replace the usual pistons and energy is transferred between thermal and acoustic forms depending on the wave direction [P. H. Ceperley J. Acoust. Soc. Am. 66 1508–1513 (1979)]. This paper is similar to another paper on gain and efficiency [P. H. Ceperley J. Acoust. Soc. Am. 72 1688–1694 (1982)] except that the present paper assumes that the wave impedance is not determined by the regenerator's properties but instead by the acoustic circuit exterior to the regenerator. For acoustic impedance of freely propagating traveling waves in air the efficiency is limited to 11% of Carnot efficiency due to visious heating in the regenerator. This can be greatly increased by going to higher impedances; e.g. 79% is possible at ten times greater impedance.

Peter H. Ceperley

1984-01-01T23:59:59.000Z

188

Title of Dissertation: A Search for Short Duration Very High Energy Emission from Gamma-Ray Bursts  

E-Print Network [OSTI]

of GRBs. #12;A Search for Short Duration Very High Energy Emission from Gamma-Ray Bursts by David NoyesABSTRACT Title of Dissertation: A Search for Short Duration Very High Energy Emission from Gamma-Ray by gamma rays with primary energies of approximately 100 GeV and higher. The wide field of view ( 2 sr

California at Santa Cruz, University of

189

Nonlinear microwave impedance of short and long Josephson junctions Z. Zhai, Patanjali V. Parimi, and S. Sridhar  

E-Print Network [OSTI]

Nonlinear microwave impedance of short and long Josephson junctions Z. Zhai, Patanjali V. Parimi ) of the microwave ac impedance R iX of both short and long Josephson junctions is calculated under a variety and fabricated Josephson junctions in the high temperature superconductors. When a dc field (bdc) or current (idc

Sridhar, Srinivas

190

Broadband modelling of short gamma-ray bursts with energy injection from magnetar spin-down and its implications for radio detectability  

E-Print Network [OSTI]

The magnetar model has been proposed to explain the apparent energy injection in the X-ray light curves of short gamma-ray bursts (SGRBs), but its implications across the full broadband spectrum are not well explored. We investigate the broadband modelling of four SGRBs with evidence for energy injection in their X-ray light curves, applying a physically motivated model in which a newly-formed magnetar injects energy into a forward shock as it loses angular momentum along open field lines. By performing an order of magnitude search for the underlying physical parameters in the blast wave, we constrain the characteristic break frequencies of the synchrotron spectrum against their manifestations in the available multi-wavelength observations for each burst. The application of the magnetar energy injection profile restricts the succesful matches to a limited family of models that are self-consistent within the magnetic dipole spin-down framework. Because of this, we are able to produce synthetic light curves tha...

Gompertz, B P; O'Brien, P T; Wynn, G A; Wiersema, K

2014-01-01T23:59:59.000Z

191

Enhanced radiation of an invisible array of sources through a sub-wavelength metal-strip grating and applications  

Science Journals Connector (OSTI)

We experimentally demonstrate dramatically increased radiation from an “invisible” source placed next to a sub-wavelength metal strip grating. The invisible source is a novel highly reactive array of antennas excited by a common feed which weakly radiates in the far-zone. The metal grating used is sub-wavelength and non-resonant which typically attenuates the overall radiation of a nearby source especially in the transverse electric polarization. However we show that such a grating screen with proper dimensions placed next to the “invisible” source can in fact significantly enhance the radiated field strength far beyond the free space radiation of this “invisible” radiator by an order of magnitude. This radiation enhancement is facilitated through the conversion of evanescent waves of the specially designed reactive source into propagating waves and its level is inversely related to the source-grating distance. The physical phenomenon is shown in simulations and measurements at microwaves. This novel radiation enhancement effect is shown to have potential applications in various areas such as proximity sensing detection and measurement of distance.

M. Memarian

2013-01-01T23:59:59.000Z

192

A three wavelength scheme to optimize hohlraum coupling on the National Ignition Facility  

SciTech Connect (OSTI)

By using three tunable wavelengths on different cones of laser beams on the National Ignition Facility, numerical simulations show that the energy transfer between beams can be tuned to redistribute the energy within the cones of beams most prone to backscatter instabilities. These radiative hydrodynamics and laser-plasma interaction simulations have been tested against large scale hohlraum experiments with two tunable wavelengths, and reproduce the hohlraum energetics and symmetry. Using a third wavelength provides a greater level of control of the laser energy distribution and coupling in the hohlraum, and could significantly reduce stimulated Raman scattering losses and increase the hohlraum radiation drive while maintaining a good implosion symmetry.

Michel, P; Divol, L; Town, R; Rosen, M

2010-12-16T23:59:59.000Z

193

Quantum Field Theory in Graphene  

E-Print Network [OSTI]

This is a short non-technical introduction to applications of the Quantum Field Theory methods to graphene. We derive the Dirac model from the tight binding model and describe calculations of the polarization operator (conductivity). Later on, we use this quantity to describe the Quantum Hall Effect, light absorption by graphene, the Faraday effect, and the Casimir interaction.

I. V. Fialkovsky; D. V. Vassilevich

2011-11-13T23:59:59.000Z

194

Sedimentation Field Flow Fractionation: Applications  

Science Journals Connector (OSTI)

...FIELD-FLOW FRACTIONATION OF ALKALI-LIBERATED NUCLEAR POLYHEDROSIS-VIRUS FROM GYPSY-MOTH...FRACTIONATION TO RADIOACTIVE-WASTE DISPOSAL, NUCLEAR TECHNOLOGY 51 : 147 ( 1980 ). SOBER...perThe SFFF separation in Fig. 9a was ic dispersant moarbitrarily concluded shortly after...

J. J. Kirkland; W. W. Yau

1982-10-08T23:59:59.000Z

195

Observation of field-reversed configurations with spheromak magnetic field profiles  

Science Journals Connector (OSTI)

We report the first observation of field-reversed configurations with nearly force-free magnetic fields in the central region of the compact toroid. The field profiles and flux ratios suggest that some form of relaxation phenomenon is occurring in this high-? kinetic regime. The magnetic helicity of the translating plasmas arises from axial asymmetry, possibly through end-shorting Alfvén waves.

M. Tuszewski and B. L. Wright

1989-11-13T23:59:59.000Z

196

Short-Term Energy Outlook May 2014  

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

400 500 600 700 800 900 1000 October November December January February March U.S. Winter Heating Degree Days population-weighted 201112 201213 201314 201415 Source: Short-Term...

197

Short Term Energy Outlook, January 2003  

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

3 1 Short-Term Energy Outlook January 2003 Overview World Oil Markets. The oil market is vulnerable to a number of forces that could cause substantial price volatility over the...

198

Compilation techniques for short-vector instructions  

E-Print Network [OSTI]

Multimedia extensions are nearly ubiquitous in today's general-purpose processors. These extensions consist primarily of a set of short-vector instructions that apply the same opcode to a vector of operands. This design ...

Larsen, Samuel (Samuel Barton), 1975-

2006-01-01T23:59:59.000Z

199

Gravitational waves and short gamma ray bursts.  

E-Print Network [OSTI]

??Short hard gamma-ray bursts (GRB) are believed to be produced by compact binary coalescences (CBC) { either double neutron stars or neutron star{black hole binaries.… (more)

Predoi, Valeriu

2012-01-01T23:59:59.000Z

200

Graphene-based passively Q-switched dual-wavelength erbium-doped fiber laser  

Science Journals Connector (OSTI)

We demonstrate a compact Q-switched dual-wavelength erbium-doped fiber (EDF) laser based on graphene as a saturable absorber (SA). By optically driven deposition of graphene on a...

Luo, Zhengqian; Zhou, Min; Weng, Jian; Huang, Guoming; Xu, Huiying; Ye, Chenchun; Cai, Zhiping

2010-01-01T23:59:59.000Z

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


201

Calicivirus Inactivation by Nonionizing (253.7-Nanometer-Wavelength [UV]) and Ionizing (Gamma) Radiation  

Science Journals Connector (OSTI)

...7-nm-wavelength [UV]) radiation, inactivation by ionizing (gamma) radiation was studied as a process...constituents on inactivation by radiation. MATERIALS AND METHODS Viruses...Shoji Corporation, Tokyo, Japan) was propagated in MDCK...

Ana Maria de Roda Husman; Paul Bijkerk; Willemijn Lodder; Harold van den Berg; Walter Pribil; Alexander Cabaj; Peter Gehringer; Regina Sommer; Erwin Duizer

2004-09-01T23:59:59.000Z

202

Wavelength Spacing Tunable, Multiwavelength Q-switched Fiber Laser Mode-locked by Graphene Oxide  

E-Print Network [OSTI]

We demonstrate a wavelength spacing tunable, multiwavelength Q-switched mode-locked fiber laser (QML) based on a fiber taper deposited with graphene oxide. The operation of the laser can be understood in terms of the formation of bunches of QMLs which possess small temporal intervals, and multiwavelength spectra are generated due to the Fourier transformation. We find that the temporal spacing of the QMLs is highly sensitive to the pump power, and as a result, the wavelength spacing can be easily tuned by varying the pump power. Our experimental laser provides a wavelength spacing tuning range from ~0.001 nm to 0.145 nm with a pump power variation less than 10 mW. The laser could be developed into a low lost wavelength spacing tunable optical source for a wide range of applications, such as spectroscopy, microwave/terahertz signal generation, optical metrology, optical communications and sensing.

Gao, Lei

2014-01-01T23:59:59.000Z

203

WAVELENGTH DEPENDENT EFFECTIVE TRAP DENSITY IN CdTe : EVIDENCE FOR THE PRESENCE OF TWO  

E-Print Network [OSTI]

1 WAVELENGTH DEPENDENT EFFECTIVE TRAP DENSITY IN CdTe : EVIDENCE FOR THE PRESENCE OF TWO.1016/S0030-4018(96)00516-0 #12;2 Photorefractive semiconductors like CdTe are characterized by a low

204

E-Print Network 3.0 - all-optical wavelength conversion Sample...  

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

Search Powered by Explorit Topic List Advanced Search Sample search results for: all-optical wavelength conversion Page: << < 1 2 3 4 5 > >> 1 Bitwise-controlled All-Optical...

205

Mitigating of Modal Instabilities in Linearly-Polarized Fiber Amplifiers by Shifting Pump Wavelength  

E-Print Network [OSTI]

We investigated the effct of pump wavelength on the modal instabilities (MI) in high power linearly-polarized Yb-doped fiber amplifiers. We built a novel semi-analytical model to determine the frequency coupling characteristics and power threshold of MI, which indicates promising MI suppression through pumping at an appropriate wavelength. By pumping at 915nm, the threshold can be enhanced by a factor of 2.36 as compared to that pumped at 976nm. Based on a high power linearly-polarized fiber amplifier platform, we studied the influence of pump wavelength experimentally. The threshold has been increased by a factor of 2 at 915nm, which agrees with the theoretical calculation and verified our theoretical model. Furthermore, we show that MI suppression by detuning the pump wavelength is weakened for fiber with large core-to-cladding ratio.

Rumao Tao; Pengfei Ma; Xiaolin Wang; Pu Zhou; Zejin Liu

2014-12-02T23:59:59.000Z

206

Method for Estimating Loss over Wide Wavelength Region of Fiber Cables Installed in Access Networks  

Science Journals Connector (OSTI)

We propose a simple method for estimating the loss of installed cables to expand WDM access networks. Loss at arbitrary wavelengths can be very accurately predicted from the measured...

Tsujikawa, Kyozo; Takaya, Masaaki; Tomita, Shigeru

207

Submillisecond-response polymer network liquid crystal phase modulators at 1.06-lm wavelength  

E-Print Network [OSTI]

Submillisecond-response polymer network liquid crystal phase modulators at 1.06-lm wavelength Jie modulator is demonstrated at k ÂĽ 1.06 lm wavelength. A decay time of 117 ls for 2p phase modulation-response and scattering-free PNLC phase modulator at k ÂĽ 1.06 lm. The measured response time is 117 ls for a 2p phase

Wu, Shin-Tson

208

Broadly defining lasing wavelengths in single bandgap-graded semiconductor nanowires  

E-Print Network [OSTI]

optoelectronic devices. KEYWORDS: Cadmium sulfide selenide, bandgap-graded nanowire, lasing, defining wavelength, mode selectivity Semiconductor NW lasers have recently attracted a great deal of interest, since they have large numbers of potential... applications in future photonic and optoelectronic devices.1-5 To push NW lasers closer to practical applications, some important challenges, for instance, wavelength variability, must be addressed. To date, a number of binary semiconductor NW lasers...

Yang, Zongyin; Wang, Delong; Meng, Chao; Wu, Zhemin; Wang, Yong; Ma, Yaoguang; Dai, Lun; Liu, Xiaowei; Hasan, Tawfique; Liu, Xu; Yang, Qing

2014-05-05T23:59:59.000Z

209

Compact Reflection-Type Phaser Using Quarter-Wavelength Transmission Line Resonators  

E-Print Network [OSTI]

A compact reflection-type phaser composed of quarter-wavelength transmission line resonators interconnected by alternating K- and J-inverters is proposed. A design method is also presented. To validate this method, a 4th-order example is designed and fabricated. The proposed phaser is shown to exhibit the benefits of smaller size, easier fabrication and suppressed even-order harmonics compared with previously reported half-wavelength phasers.

Liao, Weiwei; Chen, Yifan; Caloz, Christophe

2014-01-01T23:59:59.000Z

210

DOE/EIA-0202(87/3Q) Energy Information Administration Short-Term  

Gasoline and Diesel Fuel Update (EIA)

3Q) 3Q) Energy Information Administration Short-Term Energy Outlook Quarterly Projections July 1987 aergy i . Energy ' Energy Energy Energy i Energy i . Energy . Energy Energy Energy . Energy . Energy Energy Energy Energy i Energy . Energy . Energy Energy Energy Energy . Energy "nergy ; Short-Term : Short-Term . Short-Term : Short-Term : Short-Term ; Short-Term : Short-Term ; Short-Term : Short-Term : Short-Term ; Short-Term ; Short-Term ; Short-Term : Short-Term : Short-Term ; Short-Term ; Short-Term ; Short-Term ; Short-Term : Short-Term : Short-Term ; Short-Term : Short-Term ; Short-Term ; Short-Term ; Short-T'- Ent. Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energv Ene1" F- Ou Out, Outlc Outloc.

211

Masked deposition techniques for achieving multilayer period variations required for short-wavelength (68-Ĺ) soft-x-ray imaging optics  

Science Journals Connector (OSTI)

Practical issues in the development of multilayer coatings for reflective imaging systems operating at ? ? 68 Ĺ are discussed. The 1% bandpass of Ru/B4C multilayers at this...

Kortright, J B; Gullikson, E M; Denham, P E

1993-01-01T23:59:59.000Z

212

DOE/EIA-0202(88/2Q) Energy Information Administration Short-Term  

Gasoline and Diesel Fuel Update (EIA)

2Q) 2Q) Energy Information Administration Short-Term Energy Outlook Quarterly Projections April 1988 aergy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy E nergy Energy Energy Energy Energy '? nergy Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook '"""look Short-Terni Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term

213

DOE/EIA-0202(88/3Q) Energy Information Administration Short-Term  

Gasoline and Diesel Fuel Update (EIA)

3Q) 3Q) Energy Information Administration Short-Term Energy Outlook Quarterly Projections July 1988 Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy . oi Lor L- . ; Short-Term : Short-Term : Short-Term : Short-Term : Short-Term : Short-Term ; Short-Term . Short-Term : Short-Term : Short-Term . Short-Term : Short-Term : Short-Term ; Short-Term : Short-Term . Short-Term : Short-Term : Short-Term : Short-Term : Short-Term . Short-Term : Short-Term : Short-Term ; Short-Term . Short-Term Ent, Energ,, Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Ene r F- Ou Out, Outlc Outloc Outloo. Outlook Outlook Outlook Outlool Outlook Outlook Outlook Outlool

214

High field gradient particle accelerator  

DOE Patents [OSTI]

A high electric field gradient electron accelerator utilizing short duration, microwave radiation, and capable of operating at high field gradients for high energy physics applications or at reduced electric field gradients for high average current intermediate energy accelerator applications is disclosed. Particles are accelerated in a smooth bore, periodic undulating waveguide, wherein the period is so selected that the particles slip an integral number of cycles of the r.f. wave every period of the structure. This phase step of the particles produces substantially continuous acceleration in a traveling wave without transverse magnetic or other guide means for the particle. 10 figs.

Nation, J.A.; Greenwald, S.

1989-05-30T23:59:59.000Z

215

High field gradient particle accelerator  

DOE Patents [OSTI]

A high electric field gradient electron accelerator utilizing short duration, microwave radiation, and capable of operating at high field gradients for high energy physics applications or at reduced electric field gradients for high average current intermediate energy accelerator applications. Particles are accelerated in a smooth bore, periodic undulating waveguide, wherein the period is so selected that the particles slip an integral number of cycles of the r.f. wave every period of the structure. This phase step of the particles produces substantially continuous acceleration in a traveling wave without transverse magnetic or other guide means for the particle.

Nation, John A. (Ithaca, NY); Greenwald, Shlomo (Haifa, IL)

1989-01-01T23:59:59.000Z

216

Balloon observations of ultra-low-frequency waves in the electric field above the South Pole  

SciTech Connect (OSTI)

The physics of ultra-low-frequency waves in the magnetosphere, near the cusp and in the polar cap, is important because this region is one where ultra-low-frequency wave energy from the magnetopause can most easily enter the magnetosphere. During the 1985-1986 South Pole balloon campaign, eight stratospheric balloon payloads were launched from Amundsen-Scott Station, South Geographic Pole, Antarctica, to record data on ultra-low-frequency waves. The payloads were instrumented with three-axis double-probe electric field detectors and X-ray scintillation counters. This paper concentrates on the third flight of this series, which was launched at 2205 universal time on 21 December 1985. Good data were received from the payload until the transmitter failed at 0342 universal time on 22 December. During most of the four hours that the balloon was afloat, an intense ultra-low-frequency wave event was in progress. The electric-field data from this period have been examined in detail and compared with magnetic field data, obtained with ground-based fluxgate and induction magnetometers to determine the characteristics of the waves. After float was reached, the electric-field data in figure 1 show large-amplitude, quasi-periodic fluctuations suggesting the presence of intense ultra-low-frequency wave activity. In conclusion, the electric-field signature observed from flight 3 appears to have been essentially an electrostatic event or possibly a short-wavelength hydromagnetic wave with a varying and interesting polarization character. The authors are continuing the analysis of the data to determine the source of the observed ultra-low-frequency waves.

Liao, B.; Benbrrook, J.R.; Bering E.A. III; Byrne, G.J.; Theall, J.R. (Univ. of Houston, TX (USA))

1988-01-01T23:59:59.000Z

217

Gyrokinetic theory of electrostatic lower-hybrid drift instabilities in a current sheet with guide field  

SciTech Connect (OSTI)

A kinetic electrostatic eigenvalue equation for the lower-hybrid drift instability (LHDI) in a thin Harris current sheet with a guide field is derived based on the gyrokinetic electron and fully kinetic ion(GeFi) description. Three-dimensional nonlocal analyses are carried out to investigate the influence of a guide field on the stabilization of the LHDI by finite parallel wavenumber, k{sub ?}. Detailed stability properties are first analyzed locally, and then as a nonlocal eigenvalue problem. Our results indicate that at large equilibrium drift velocities, the LHDI is further destabilized by finite k{sub ?} in the short-wavelength domain. This is demonstrated in a local stability analysis and confirmed by the peak in the eigenfunction amplitude. We find the most unstable modes localized at the current sheet edges, and our results agree well with simulations employing the GeFi code developed by Lin et al. [Plasma Phys. Controlled Fusion 47, 657 (2005); Plasma Phys. Controlled Fusion 53, 054013 (2011)].

Tummel, K., E-mail: tummel08@gmail.com [Department of Physics and Astronomy, University of California at Irvine, Irvine, California 92697 (United States); Chen, L. [Institute for Fusion Theory and Simulation and Department of Physics, ZheJiang University, Hang Zhou, ZheJiang 310058 (China) [Institute for Fusion Theory and Simulation and Department of Physics, ZheJiang University, Hang Zhou, ZheJiang 310058 (China); Department of Physics and Astronomy, University of California at Irvine, Irvine, California 92697 (United States); Wang, Z.; Wang, X. Y.; Lin, Y. [Department of Physics, Auburn University, Auburn, Alabama 36849 (United States)] [Department of Physics, Auburn University, Auburn, Alabama 36849 (United States)

2014-05-15T23:59:59.000Z

218

Polarization operator approach to pair creation in short laser pulses  

E-Print Network [OSTI]

Short-pulse effects are investigated for the nonlinear Breit-Wheeler process, i.e. the production of an electron-positron pair induced by a gamma photon inside an intense plane-wave laser pulse. To obtain the total pair-creation probability we verify (to leading-order) the cutting rule for the polarization operator in the realm of strong-field QED by an explicit calculation. Using a double-integral representation for the leading-order contribution to the polarization operator, compact expressions for the total pair-creation probability inside an arbitrary plane-wave background field are derived. Correspondingly, the photon wave function including leading-order radiative corrections in the laser field is obtained via the Schwinger-Dyson equation in the quasistatic approximation. Moreover, the influence of the carrier-envelope phase and of the laser pulse shape on the total pair-creation probability in a linearly polarized laser pulse is investigated, and the validity of the (local) constant-crossed field approximation analyzed. It is shown that with presently available technology pair-creation probabilities of the order of ten percent could be reached for a single gamma photon.

Sebastian Meuren; Karen Z. Hatsagortsyan; Christoph H. Keitel; Antonino Di Piazza

2015-01-28T23:59:59.000Z

219

Electricity storage for short term power system service (Smart...  

Open Energy Info (EERE)

Electricity storage for short term power system service (Smart Grid Project) Jump to: navigation, search Project Name Electricity storage for short term power system service...

220

Property:ShortName | Open Energy Information  

Open Energy Info (EERE)

ShortName ShortName Jump to: navigation, search This is a property of type String. Pages using the property "ShortName" Showing 25 pages using this property. (previous 25) (next 25) 4 4-County Electric Power Assn (Mississippi) EIA Revenue and Sales - April 2008 + 2008-04 + 4-County Electric Power Assn (Mississippi) EIA Revenue and Sales - August 2008 + 2008-08 + 4-County Electric Power Assn (Mississippi) EIA Revenue and Sales - December 2008 + 2008-12 + 4-County Electric Power Assn (Mississippi) EIA Revenue and Sales - February 2008 + 2008-02 + 4-County Electric Power Assn (Mississippi) EIA Revenue and Sales - February 2009 + 2009-02 + 4-County Electric Power Assn (Mississippi) EIA Revenue and Sales - January 2008 + 2008-01 + 4-County Electric Power Assn (Mississippi) EIA Revenue and Sales - January 2009 + 2009-01 +

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


221

Archives and History Office: Short Features  

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

Features > Short Features Features > Short Features Short Features in SLAC History 40th SLAC celebrated its 40th Anniversary in 2002 with a series of events and a photo book. 50th SLAC celebrated its 50th Anniversary in 2012 with a series of events and a special anniversary website: Celebrating 50 Years of Discovery. APS Burton Richter, Sid Drell , Martin Perl , and Herman Winick made presentations at the American Physical Society (APS) Centennial Celebration and Meeting ( March 20-26 1999). Angiogram The first synchrotron radiation coronary angiogram recorded on a human subject occurred in May 1986 at the Stanford Synchrotron Radiation Laboratory (SSRL). BaBar BaBar was dedicated on August 13, 1999. Beam Trees Beam trees are not actually beams or trees. Blue Book The Blue Book is a SLAC classic written to document for posterity the design and building of SLAC's two-mile accelerator. Available in full-text from the SLAC Library.

222

DOBEIA-0202(83/4Q) Short-Term Energy Outlook Quarterly Projections  

Gasoline and Diesel Fuel Update (EIA)

DOBEIA-0202(83/4Q) DOBEIA-0202(83/4Q) Short-Term Energy Outlook Quarterly Projections November 1983 Energy Information Administration Washington, D.C. t rt jrt .ort lort .lort lort lort lort <.ort ort Tt- .-m .erm -Term -Term Term Term Term Term Term Term Term Term Term Term Term Term Term Nrm ,iergy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy ^nergy Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Short Short Short Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short Short Short Short Short-

223

DOE/EIA-0202(85/1Q) Short-Term Energy Outlook Quarterly Projections  

Gasoline and Diesel Fuel Update (EIA)

1Q) 1Q) Short-Term Energy Outlook Quarterly Projections January 1985 Published: February 1985 Energy Information Administration Washington, D.C. t rt jrt .ort lort lort lort nort lort *.ort ort Tt .m .erm -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term uergy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy ^nergy Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short Short

224

Orientational ordering of short LC rods in an anisotropic liquid crystalline polymer glass  

E-Print Network [OSTI]

Orientational ordering of short LC rods in an anisotropic liquid crystalline polymer glass Lorin the glass transition is determined by field theory. Microscopic anisotropic interactions can align the LC the glass transition. Host anisotropic glass formers made of mesogens with side chains were studied recently

Cao, Jianshu

225

Shorting pipeline and jacket cathodic protection systems  

SciTech Connect (OSTI)

The benefits of shorting pipeline and jacket cathodic protection (CP) systems for the external protection of subsea pipelines based on data from operations in the Gulf of Mexico, Persian Gulf, North Sea, and Indonesia are discussed. Shorting, as opposed to traditional electrical isolation, is cost effective because CP surveys and future retrofits are greatly simplified. Jacket CP systems can provide protection of coated pipelines for distances much greater than normally anticipated. Some simple modeling of jacket/pipeline CP systems is used to illustrate the effect of various design parameters.

Thomason, W.H. (Conoco Inc., Ponca City, OK (United States)); Evans, S. (Conoco Inc., Houston, TX (United States)); Rippon, I.J. (Conoco Ltd., Aberdeen (United Kingdom)); Maurin, A.E. III (Conoco Inc., Lafayette, LA (United States))

1993-09-01T23:59:59.000Z

226

Quantum hacking of a continuous-variable quantum-key-distribution system using a wavelength attack  

Science Journals Connector (OSTI)

The security proofs of continuous-variable quantum key distribution are based on the assumptions that the eavesdropper can neither act on the local oscillator nor control Bob's beam splitter. These assumptions may be invalid in practice due to potential imperfections in the implementations of such protocols. In this paper, we consider the problem of transmitting the local oscillator in a public channel and propose a wavelength attack which allows the eavesdropper to control the intensity transmission of Bob's beam splitter by switching the wavelength of the input light. Specifically we target continuous-variable quantum key distribution systems that use the heterodyne detection protocol using either direct or reverse reconciliation. Our attack is proved to be feasible and renders all of the final keys shared between the legitimate parties insecure, even if they have monitored the intensity of the local oscillator. To prevent our attack on commercial systems, a simple wavelength filter should be randomly added before performing monitoring detection.

Jing-Zheng Huang; Christian Weedbrook; Zhen-Qiang Yin; Shuang Wang; Hong-Wei Li; Wei Chen; Guang-Can Guo; Zheng-Fu Han

2013-06-24T23:59:59.000Z

227

Quantum Hacking on Continuous-Variable Quantum Key Distribution System using a Wavelength Attack  

E-Print Network [OSTI]

The security proofs of continuous-variable quantum key distribution are based on the assumptions that the eavesdropper can neither act on the local oscillator nor control Bob's beam splitter. These assumptions may be invalid in practice due to potential imperfections in the implementations of such protocols. In this paper, we consider the problem of transmitting the local oscillator in a public channel and propose a wavelength attack which can allow the eavesdropper to control the intensity transmission of Bob's beam splitter by switching the wavelength of the input light. Specifically we target continuous-variable quantum key distribution systems that use the heterodyne detection protocol using either direct or reverse reconciliation. Our attack is proved to be feasible and renders all of the final key shared between the legitimate parties insecure, even if they have monitored the intensity of the local oscillator. To prevent our attack on commercial systems, a simple wavelength filter should be added before performing the monitoring detection.

Jing-Zheng Huang; Christian Weedbrook; Zhen-Qiang Yin; Shuang Wang; Hong-Wei Li; Wei Chen; Guang-Can Guo; Zheng-Fu Han

2013-02-01T23:59:59.000Z

228

Optical apparatus using liquid crystals for shaping the spatial intensity of optical beams having designated wavelengths  

DOE Patents [OSTI]

The spatial intensity profile of an optical beam of designated wavelengths, such as a laser beam, is shaped (the beam is apodized) by means of cholesteric liquid crystals of opposite chirality disposed successively along the path of the beam. The crystals have curved surfaces, which may be defined by a lens which defines the thickness of the liquid crystal fluid gap in a liquid crystal cell, so as to vary the selective reflection of the designated wavelength across the aperture of the beam. In this way, a soft aperture is provided. By using tandem cell pairs having liquid crystals of opposite chirality, but of different pitch, and with lenses of different curvature, beams of different wavelengths which are projected colinearly along the path may be individually tailored in spatial intensity profile.

Jacobs, Stephen D. (Pittsford, NY); Cerqua, Kathleen A. (Rochester, NY)

1987-01-01T23:59:59.000Z

229

High-throughput Accurate-wavelength Lens-based Visible Spectrometera  

SciTech Connect (OSTI)

A scanning visible spectrometer has been prototyped to complement fixed-wavelength transmission grating spectrometers for charge exchange recombination spectroscopy. Fast f/1.8 200 mm commercial lenses are used with a large 2160 mm-1 grating for high throughput. A stepping-motor controlled sine drive positions the grating, which is mounted on a precision rotary table. A high-resolution optical encoder on the grating stage allows the grating angle to be measured with an absolute accuracy of 0.075 arcsec, corresponding to a wavelength error ? 0.005 Ĺ. At this precision, changes in grating groove density due to thermal expansion and variations in the refractive index of air are important. An automated calibration procedure determines all relevant spectrometer parameters to high accuracy. Changes in bulk grating temperature, atmospheric temperature and pressure are monitored between the time of calibration and the time of measurement to insure a persistent wavelength calibration

Ronald E. Belll and Filippo Scotti

2010-06-04T23:59:59.000Z

230

Optical apparatus using liquid crystals for shaping the spatial intensity of optical beams having designated wavelengths  

DOE Patents [OSTI]

The spatial intensity profile of an optical beam of designated wavelengths, such as a laser beam, is shaped (the beam is apodized) by means of cholesteric liquid crystals of opposite chirality disposed successively along the path of the beam. The crystals have curved surfaces, which may be defined by a lens which defines the thickness of the liquid crystal fluid gap in a liquid crystal cell, so as to vary the selective reflection of the designated wavelength across the aperture of the beam. In this way, a soft aperture is provided. By using tandem cell pairs having liquid crystals of opposite chirality, but of different pitch, and with lenses of different curvature, beams of different wavelengths which are projected colinearly along the path may be individually tailored in spatial intensity profile. 11 figs.

Jacobs, S.D.; Cerqua, K.A.

1987-07-14T23:59:59.000Z

231

Wear 262 (2007) 220224 Short communication  

E-Print Network [OSTI]

Published by Elsevier B.V. Keywords: Solid lubricants; Nanocomposites; Friction; Wear; PTFE; Nanoparticles are compression molded in a 0043-1648/$ ­ see front matter © 2006 Published by Elsevier B.V. doi:10.1016/j.wearWear 262 (2007) 220­224 Short communication Tribological behavior of PEEK components

Sawyer, Wallace

232

SHORT-RUN MONEY DEMAND Laurence Ball  

E-Print Network [OSTI]

SHORT-RUN MONEY DEMAND Laurence Ball Johns Hopkins University August 2002 I am grateful with Goldfeld's partial adjustment model. A key innovation is the choice of the interest rate in the money on "near monies" -- close substitutes for M1 such as savings accounts and money market mutual funds

Niebur, Ernst

233

Nonperturbative short-range dynamics in TMDs  

SciTech Connect (OSTI)

This presentation covers: deep inelastic processes and transverse momentum distributions; chiral symmetry breaking, including the physical picture, the dynamical model, and parton distributions; partonic structures, including transverse momentum distributions, coordinate space correlator, and short range correlations; and measurements of semi-inclusive deep inelastic scattering, correlations, and multi-parton processes in pp interactions.

Weiss, Christian [JLAB

2013-05-01T23:59:59.000Z

234

LE JOURNAL DE PHYSIQUE Short Communication  

E-Print Network [OSTI]

2307 LE JOURNAL DE PHYSIQUE Short Communication Cold fusion in a dense electron gas R. Balian, J in metallic palladiun are required in order to bring the cold fusion rate to an observable value. 'Ibme 50 N are known to yield observable rates for "cold fusion" in ddp-molecules [1-3]. One may also notice

Boyer, Edmond

235

Cycle cover with short cycles Nicole Immorlica  

E-Print Network [OSTI]

Introduction Given a graph and a subset of marked elements (nodes, edges, or some combination thereof), a cycleCycle cover with short cycles Nicole ImmorlicaÂŁ Mohammad MahdianÂŁ Vahab S. MirrokniÂŁ Abstract Cycle for variants of cycle covering problems which bound the size and/or length of the covering cycles

Immorlica, Nicole

236

A Short Introduction Probability and Statistics  

E-Print Network [OSTI]

A Short Introduction to Probability and Statistics in Physics Grant W. Mason "Seek simplicity and the Uniform Probability Distribution Work Together . 25 2 Statistics: Pure Math Becomes Applied Math 27 2 probability and statistics, the typical undergraduate curriculum doesn't usually have room for a formal course

Hart, Gus

237

Short communication Sediment budget possibilities and improbabilities  

E-Print Network [OSTI]

Short communication Sediment budget possibilities and improbabilities Todd L. Walton Jr. a algebra Matrix algebra Sand Sediment bypassing Sediment budget Sediment management Waves Problems of constructing a sediment budget for an inlet is often a challenge due to constraints on data collection, quality

US Army Corps of Engineers

238

SHORT CONTRIBUTION J. Choi S. Y. Lee  

E-Print Network [OSTI]

(3HB/V), several addi- tional factors need to be examined during process analysis and economic and methods Process analysis and economic evaluation of P(3HB/V) production and recovery were carried outSHORT CONTRIBUTION J. Choi á S. Y. Lee Economic considerations in the production of poly(3

239

Student Groups Student Group Description Short Description  

E-Print Network [OSTI]

Student Groups Student Group Description Short Description AHR Scholar-Architecture Scholar ART Honors - Architecture Honors H04 Honors - Allied Medical Prof Honors H05 Honors - Arts & Sciences Honors H14 Honors - Envir&Natural Resources Honors H15 Honors - Food, Agr, & Envir Sci Honors H16 Honors

240

Cosmological scalar field perturbations can grow  

E-Print Network [OSTI]

It has been argued that the small perturbations in the energy density to the homogeneous and isotropic configurations of a canonical scalar field in an expanding universe do not grow. We show that this is not true in general, and clarify the root of the misunderstanding. We revisit a simple model in which the linear perturbations grow like those in the standard cold dark matter scenario, but with the Jeans length at the scale of the Compton wavelength of the scalar particle.

Alcubierre, Miguel; Diez-Tejedor, Alberto; Torres, José M

2015-01-01T23:59:59.000Z

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


241

Reliability of temperature determination from curve-fitting in multi-wavelength pyrometery  

SciTech Connect (OSTI)

Abstract This paper examines the reliability of a widely used method for temperature determination by multi-wavelength pyrometry. In recent WDM experiments with ion-beam heated metal foils, we found that the statistical quality of the fit to the measured data is not necessarily a measure of the accuracy of the inferred temperature. We found a specific example where a second-best fit leads to a more realistic temperature value. The physics issue is the wavelength-dependent emissivity of the hot surface. We discuss improvements of the multi-frequency pyrometry technique, which will give a more reliable determination of the temperature from emission data.

Ni, P.A.; More, R.M.; Bieniosek, F.M.

2013-08-04T23:59:59.000Z

242

High-order harmonic generation from plasma plume pumped by 400 nm wavelength laser  

SciTech Connect (OSTI)

The authors present their study on high-order harmonic generation pumped by 400 nm wavelength laser from plasma plumes produced on the surfaces of various solid-state targets. The maximum harmonic cutoff was observed for Be plasma (31st harmonic, {lambda}=12.9 nm). They compared these results with harmonic generation pumped by 800 nm wavelength laser. The authors demonstrated single harmonic enhancement for Cr, Sn, Sb, and Mn plasmas. They also studied the use of varying the chirp of the pump laser to control the enhancement of single harmonics within the plateau.

Ganeev, Rashid A.; Elouga Bom, Luc B.; Ozaki, Tsuneyuki [Institut National de la Recherche Scientifique, Energie, Materiaux et Telecommunications, 1650 Lionel-Boulet, Varennes, Quebec J3X 1S2 (Canada) and Scientific Association Akadempribor, Academy of Sciences of Uzbekistan, Akademgorodok, Tashkent 100125 (Uzbekistan); Institut National de la Recherche Scientifique, Energie, Materiaux et Telecommunications, 1650 Lionel-Boulet, Varennes, Quebec J3X 1S2 (Canada)

2007-09-24T23:59:59.000Z

243

Single shot extreme ultraviolet laser imaging of nanostructures with wavelength resolution  

SciTech Connect (OSTI)

We have demonstrated near-wavelength resolution microscopy in the extreme ultraviolet. Images of 50 nm diameter nanotubes were obtained with a single {approx}1 ns duration pulse from a desk-top size 46.9 nm laser. We measured the modulation transfer function of the microscope for three different numerical aperture zone plate objectives, demonstrating that 54 nm half-period structures can be resolved. The combination of near-wavelength spatial resolution and high temporal resolution opens myriad opportunities in imaging, such as the ability to directly investigate dynamics of nanoscale structures.

Jones, Juanita; Brewer, Courtney A.; Brizuela, Fernando; Wachulak, Przemyslaw; Martz, Dale H.; Chao, Weilun; Anderson, Erik H.; Attwood, David T.; Vinogradov, Alexander V.; Artyukov, Igor A.; Ponomareko, Alexander G.; Kondratenko, Valeriy V.; Marconi, Mario C.; Rocca, Jorge J.; Menoni, Carmen S.

2008-01-07T23:59:59.000Z

244

Overview of Complementarity and Synergy with Other Wavelengths in Cosmology in the SKA era  

E-Print Network [OSTI]

We give an overview of complementarity and synergy in cosmology between the Square Kilometre Array and future survey projects in other wavelengths. In the SKA era, precision cosmology will be limited by systematic errors and cosmic variance, rather than statistical errors. However, combining and/or cross-correlating multi-wavelength data, from the SKA to the cosmic microwave background, optical/infrared and X-ray, substantially reduce these limiting factors. In this chapter, we summarize future survey projects and show highlights of complementarity and synergy, which can be very powerful to probe major cosmological problems such as dark energy, modified gravity and primordial non-Gaussianity.

Takahashi, Keitaro; Burigana, Carlo; Jackson, Carole A; Jarvis, Matt; Kitching, Thomas D; Kneib, Jean-Paul; Oguri, Masamune; Prunet, Simon; Shan, Huanyuan; Starck, Jean-Luc; Yamauchi, Daisuke

2015-01-01T23:59:59.000Z

245

HETEROGENEITY IN SHORT GAMMA-RAY BURSTS  

SciTech Connect (OSTI)

We analyze the Swift/BAT sample of short gamma-ray bursts, using an objective Bayesian Block procedure to extract temporal descriptors of the bursts' initial pulse complexes (IPCs). The sample is comprised of 12 and 41 bursts with and without extended emission (EE) components, respectively. IPCs of non-EE bursts are dominated by single pulse structures, while EE bursts tend to have two or more pulse structures. The medians of characteristic timescales-durations, pulse structure widths, and peak intervals-for EE bursts are factors of {approx}2-3 longer than for non-EE bursts. A trend previously reported by Hakkila and colleagues unifying long and short bursts-the anti-correlation of pulse intensity and width-continues in the two short burst groups, with non-EE bursts extending to more intense, narrower pulses. In addition, we find that preceding and succeeding pulse intensities are anti-correlated with pulse interval. We also examine the short burst X-ray afterglows as observed by the Swift/X-Ray Telescope (XRT). The median flux of the initial XRT detections for EE bursts ({approx}6x10{sup -10} erg cm{sup -2} s{sup -1}) is {approx}>20x brighter than for non-EE bursts, and the median X-ray afterglow duration for EE bursts ({approx}60,000 s) is {approx}30x longer than for non-EE bursts. The tendency for EE bursts toward longer prompt-emission timescales and higher initial X-ray afterglow fluxes implies larger energy injections powering the afterglows. The longer-lasting X-ray afterglows of EE bursts may suggest that a significant fraction explode into denser environments than non-EE bursts, or that the sometimes-dominant EE component efficiently powers the afterglow. Combined, these results favor different progenitors for EE and non-EE short bursts.

Norris, Jay P. [Physics and Astronomy Department, University of Denver, Denver, CO 80208 (United States); Gehrels, Neil [Astroparticle Physics Laboratory, NASA/Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Scargle, Jeffrey D. [Space Science and Astrobiology Division, NASA/Ames Research Center, Moffett Field, CA 94035-1000 (United States)

2011-07-01T23:59:59.000Z

246

Transverse Effect due to Short-range Resistive Wall Wakefield  

SciTech Connect (OSTI)

For accelerator designs with ultra short electron beams, beam dynamics study has to invoke the short-range wakefields. In this paper, we first obtain the short-range dipole mode resistive wall wakefield. Analytical approach is then developed to study the single bunch transverse beam dynamics due to this short-range resistive wall wake. The results are applied to the LCLS undulator.

Juhao Wu; Alex Chao; Jean Delayen

2007-06-18T23:59:59.000Z

247

Photonic band gaps in three-dimensional network structures with short-range order  

SciTech Connect (OSTI)

We present a systematic study of photonic band gaps (PBGs) in three-dimensional (3D) photonic amorphous structures (PASs) with short-range order. From calculations of the density of optical states (DOS) for PASs with different topologies, we find that tetrahedrally connected dielectric networks produce the largest isotropic PBGs. Local uniformity and tetrahedral order are essential to the formation of PBGs in PASs, in addition to short-range geometric order. This work demonstrates that it is possible to create broad, isotropic PBGs for vector light fields in 3D PASs without long-range order.

Liew, Seng Fatt; Noh, Heeso [Department of Applied Physics, Yale University, New Haven, Connecticut 06511 (United States); Yang, Jin-Kyu [Department of Applied Physics, Yale University, New Haven, Connecticut 06511 (United States); Department of Optical Engineering, Kongju National University, Kongju 314-701 (Korea, Republic of); Schreck, Carl F. [Department of Physics, Yale University, New Haven, Connecticut 06511 (United States); Dufresne, Eric R. [Department of Physics, Yale University, New Haven, Connecticut 06511 (United States); Department of Mechanical Engineering and Materials Science, Yale University, New Haven, Connecticut 06511 (United States); Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511 (United States); Department of Cell Biology, Yale University, New Haven, Connecticut 06511 (United States); O'Hern, Corey S. [Department of Physics, Yale University, New Haven, Connecticut 06511 (United States); Department of Mechanical Engineering and Materials Science, Yale University, New Haven, Connecticut 06511 (United States); Cao, Hui [Department of Applied Physics, Yale University, New Haven, Connecticut 06511 (United States); Department of Physics, Yale University, New Haven, Connecticut 06511 (United States)

2011-12-15T23:59:59.000Z

248

Design, assembly, and testing of a high-resolution relay lens used for holography with operation at both doubled and tripled Nd:YAG laser wavelengths  

SciTech Connect (OSTI)

The design and assembly of a nine-element lens that achieves >2000 1p/mm resolution at a 355-nm wavelength (ultraviolet) has been completed. By adding a doublet to this lens system, operation at a 532-nm wavelength (green) with > 1100 1p/mm resolution is achieved. This lens is used with high-power laser light to record holograms of fast-moving ejecta particles from a shocked metal surface located inside a test package. Part of the lens and the entire test package are under vacuum with a 1-cm air gap separation. Holograms have been recorded with both doubled and tripled Nd:YAG laser light. The UV operation is very sensitive to the package window's tilt. If this window is tilted by more than 0.1 degrees, the green operation performs with better resolution than that of the UV operation. The setup and alignment are performed with green light, but the dynamic recording can be done with either UV light or green light. A resolution plate can be temporarily placed inside the test package so that a television microscope located beyond the hologram position can archive images of resolution patterns that prove that the calibration wires., interference filter, holographic plate, and relay lenses are in their correct positions. Part of this lens is under vacuum, at the point where the laser illumination passes through a focus. Alignment and tolerancing of this high-resolution lens are presented. Resolution variation across the 12-mm field of view and throughout the 5-mm depth of field is discussed for both wavelengths.

Sorenson, Danny S [Los Alamos National Laboratory; Pazuchanics, Peter D [Los Alamos National Laboratory; Malone, Robert M [NSTEC; Cox, Brian C [NSTEC; Frogget, Brent C [NSTEC; Kaufman, Morris I [NSTEC; Capelle, Gene A [NSTEC/SB; Grover, M [NSTEC/SB; Stevens, Gerald D [NSTEC/SB; Turley, William D [NSTEC/SB

2009-01-01T23:59:59.000Z

249

Wavelength tunable polarization mode converter utilizing static strain effects in lithium niobate  

E-Print Network [OSTI]

Electro-optically tunable polarization mode converters have been produced in LiNbO? substrate using all static strain optic effects. Maximum conversion efficiency of 98.3% was achieved at 66414m wavelength in TE to TM conversion, and 95...

Kwon, Ojin

2012-06-07T23:59:59.000Z

250

Wavelengths, Energy Level Classifications, and Energy Levels for the Spectrum of Neutral Mercury  

E-Print Network [OSTI]

Wavelengths, Energy Level Classifications, and Energy Levels for the Spectrum of Neutral Mercury E of neutral mercury Hg I for both the single isotope 198 Hg and for mercury in its natural isotopic abundance of neutral mercury for both 198 Hg and the natural isotopic mixture. Tabular data for 105 classified lines

Magee, Joseph W.

251

Electro-optic coefficients of lithium tantalate at near-infrared wavelengths  

E-Print Network [OSTI]

Electro-optic coefficients of lithium tantalate at near-infrared wavelengths Joanna L. Casson April 27, 2004 The unclamped linear electro-optic coefficients r13 and r33 for lithium tantalate. In the unclamped mode the effects of mechanical changes caused by piezoelectric and elasto-optic effects

Gopalan, Venkatraman

252

Photodiode-driven quantum-well modulators for C-band wavelength conversion and broadcasting  

E-Print Network [OSTI]

Photodiode-driven quantum-well modulators for C-band wavelength conversion and broadcasting Hilmi-well modulators directly driven by monolithically-integrated photodiodes for polarization-integrated, surface-normal photodiodes (PD), as shown in Fig. 1(a) along with their corresponding circuit diagram

Miller, David A. B.

253

Estimates of Impact Ionization Coefficients in Superlattice-Based Mid-Wavelength Infrared Avalanche Photodiodes  

E-Print Network [OSTI]

Photodiodes C.H. Grein1 , K. Abu El-Rub1,2 , M.E. Flatté3, and H. Ehrenreich4 1 Microphysics Laboratory ionization in type II superlattice mid- wavelength infrared avalanche photodiodes. The strategy to enhance gain, low noise avalanche photodiodes (APDs) with considerable spectral agility. The ability

Flatte, Michael E.

254

Raman fibre lasers emitting at a wavelength above 2 {mu}m  

SciTech Connect (OSTI)

Single-mode Raman fibre lasers emitting a few hundreds of millwatts at wavelengths of 2.0 and 2.2 {mu}m are built for the first time. Laser emission was amplified in a fibre with a germanium dioxide core and a silica cladding pumped by an Er/Yb-doped fibre laser. (lasers)

Dianov, Evgenii M; Bufetov, Igor' A; Mashinsky, V M; Neustruev, V B; Medvedkov, O I; Shubin, Aleksei V; Mel'kumov, Mikhail A [Fiber Optics Research Center, Russian Academy of Sciences, Moscow (Russian Federation); Gur'yanov, A N; Khopin, V F; Yashkov, M V [Institute of Chemistry of High-Purity Substances, Russian Academy of Sciences, Nizhnii Novgorod (Russian Federation)

2004-08-31T23:59:59.000Z

255

Light Trapping Textures Designed by Electromagnetic Optimization for Sub-Wavelength Thick Solar Cells  

E-Print Network [OSTI]

Light Trapping Textures Designed by Electromagnetic Optimization for Sub-Wavelength Thick Solar Sciences Division, Lawrence Berkeley National Laboratory July 23, 2013 Abstract Light trapping in solar the surface of the solar cell, where n is the material refractive index. This ray-optics absorption

California at Irvine, University of

256

FORBIDDEN AND INTERCOMBINATION LINES OF RR TELESCOPII: WAVELENGTH MEASUREMENTS AND ENERGY LEVELS  

SciTech Connect (OSTI)

Ultraviolet and visible spectra of the symbiotic nova RR Telescopii are used to derive reference wavelengths for many forbidden and intercombination transitions of ions +1 to +6 of elements C, N, O, Ne, Na, Mg, Al, Si, P, S, Cl, Ar, K, and Ca. The wavelengths are then used to determine new energy values for the levels within the ions' ground configurations or first excited configuration. The spectra were recorded by the Space Telescope Imaging Spectrograph of the Hubble Space Telescope and the Ultraviolet Echelle Spectrograph of the European Southern Observatory in 2000 and 1999, respectively, and cover 1140-6915 A. Particular care was taken to assess the accuracy of the wavelength scale between the two instruments. An investigation of the profiles of the emission lines reveals that the nebula consists of at least two plasma components at different velocities. The components have different densities, and a simple model of the lines' emissions demonstrates that most of the lines principally arise from the high density component. Only these lines were used for the wavelength study.

Young, P. R. [College of Science, George Mason University, 4400 University Drive, Fairfax, VA 22030 (United States); Feldman, U. [Artep Inc., Ellicott City, MD 21042 (United States); Lobel, A. [Royal Observatory of Belgium, Ringlaan 3, B-1180 Brussels (Belgium)

2011-10-01T23:59:59.000Z

257

The Mauna Kea Observatories Near-Infrared Filter Set. III. Isophotal Wavelengths and Absolute Calibration  

E-Print Network [OSTI]

The isophotal wavelengths, flux densities, and AB magnitudes for Vega (alpha Lyr) are presented for the Mauna Kea Observatories near-infrared filter set. We show that the near-infrared absolute calibration for Vega determined by Cohen et al. and Megessier are consistent within the uncertainties, so that either absolute calibration may be used.

A. T. Tokunaga; W. D. Vacca

2005-02-05T23:59:59.000Z

258

Metamaterial polarization spectral filter: Isolated transmission line at any prescribed wavelength  

E-Print Network [OSTI]

Metamaterial polarization spectral filter: Isolated transmission line at any prescribed wavelength.1063/1.3656286] One of the most elegant polarization spectral filters exhibiting a single isolated transmission line state of light, a high background- and ripple-free transmission line centered at the isoindex point

Zheludev, Nikolay

259

An Opto-electric Smart Material Detector with Wavelength-Dependent Bob Zheng,1  

E-Print Network [OSTI]

GP-B-19 An Opto-electric Smart Material Detector with Wavelength-Dependent Logic Bob and Computer Engineering, Rice University, Houston, Texas, U.S.A. Smart materials are artificial materials, or the coherent, collective oscillations of conduction-band electrons, are ideal sensors for smart materials due

260

Roughened Glass Slides and a Spectrophotometer for the Detection of the Wavelength-Dependent Refractive Index of Transparent Liquids  

Science Journals Connector (OSTI)

We describe a method to determine the wavelength-dependent refractive index of liquids by measurement of light transmittance with a spectrophotometer. The method is based on using...

Niskanen, Ilpo; Räty, Jukka; Myllylä, Risto; Sutinen, Veijo; Matsuda, Kiyofumi; Homma, Kazuhiro; Silfsten, Pertti; Peiponen, Kai-Erik

2012-01-01T23:59:59.000Z

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


261

The effects of wavelength, metals, and reactive oxygen species on the sunlight inactivation of microorganisms: observations and applications to the solar disinfection of drinking water  

E-Print Network [OSTI]

solar energy flux, these wavelengths may nevertheless be important for disinfection. Thus, the advantages and

Fisher, Michael Benjamin

2011-01-01T23:59:59.000Z

262

DOE/EIA-0202(84/4Q) Short-Term Energy Outlook Quarterly Projections  

Gasoline and Diesel Fuel Update (EIA)

4Q) 4Q) Short-Term Energy Outlook Quarterly Projections October 1984 Published: November 1984 Energy Information Administration Washington, D.C. t rt jrt .ort lort iort lort iort lort \ort ort Tt .erm Term Term Term Term Term Term Term Term Term Term Term Term Term -Term -Term xrm nergy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy ^nergy Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short- Short Short- Short- Short Short Short Short Short Short

263

Instrument performance study on the short and long pulse options of the second Spallation Neutron Source target station  

SciTech Connect (OSTI)

The Spallation Neutron Source (SNS) facility at the Oak Ridge National Laboratory is designed with an upgrade option for a future low repetition rate, long wavelength second target station. This second target station is intended to complement the scientific capabilities of the 1.4 MW, 60 Hz high power first target station. Two upgrade possibilities have been considered, the short and the long pulse options. In the short pulse mode, proton extraction occurs after the pulse compression in the accumulator ring. The proton pulse structure is thus the same as that for the first target station with a pulse width of ?0.7 ?s. In the long pulse mode, protons are extracted as they are produced by the linac, with no compression in the accumulator ring. The time width of the uncompressed proton pulse is ?1 ms. This difference in proton pulse structure means that neutron pulses will also be different. Neutron scattering instruments thus have to be designed and optimized very differently for these two source options which will directly impact the overall scientific capabilities of the SNS facility. In order to assess the merits of the short and long pulse target stations, we investigated a representative suit of neutron scattering instruments and evaluated their performance under each option. Our results indicate that the short pulse option will offer significantly better performance for the instruments and is the preferred choice for the SNS facility.

Zhao, J. K.; Herwig, Kenneth W.; Robertson, J. L.; Gallmeier, Franz X.; Riemer, Bernard W. [Instrument and Source Division, Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Instrument and Source Division, Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

2013-10-15T23:59:59.000Z

264

alternating magnetic fields: Topics by E-print Network  

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

attention on recent progresses. Massimo Giovannini 2006-12-14 32 Cosmological Magnetic Fields vs. CMB Astrophysics (arXiv) Summary: I present a short review of the effects of a...

265

Computed oscillator strengths and energy levels for Fe III, Fe IV, Fe V, and Fe VI with calculated wavelengths and wavelengths derived from established data  

Science Journals Connector (OSTI)

Calculated weighted oscillator strengths are tabulated for spectral lines of Fe III, Fe IV, Fe V, and Fe VI. The lines belong to transition arrays 3d6-3d54p and 3d54s-3d54p in Fe III, 3d5-3d44p and 3d44s-3d44p in Fe IV, 3d4-3d34p and 3d34s-3d34p in Fe V, and 3d3-3d24p and 3d24s-3d24p in Fe VI. For the calculations, Slater parameters are optimized on the basis of minimizing the discrepancies between observed and computed wavelengths. Configuration interaction was included among the 3dn, 3dn?14s, 3dn?24s2, 3dn?14d, and 3dn?15s even configurations and among the 3dn?14p, 3dn?24s4p, and 3dn?15p odd configurations, with 3p53dn+1 added for Fe VI. Calculated wavelengths are compared with observational data, and the compositions of energy levels are listed. This completes a series of similar computations for these complex configurations covering Fe I to Fe VI.

B.C. Fawcett

1989-01-01T23:59:59.000Z

266

Monochromatic short pulse laser produced ion beam using a compact passive magnetic device  

SciTech Connect (OSTI)

High-intensity laser accelerated protons and ions are emerging sources with complementary characteristics to those of conventional sources, namely high charge, high current, and short bunch duration, and therefore can be useful for dedicated applications. However, these beams exhibit a broadband energy spectrum when, for some experiments, monoenergetic beams are required. We present here an adaptation of conventional chicane devices in a compact form (10 cm × 20 cm) which enables selection of a specific energy interval from the broadband spectrum. This is achieved by employing magnetic fields to bend the trajectory of the laser produced proton beam through two slits in order to select the minimum and maximum beam energy. The device enables a production of a high current, short duration source with a reproducible output spectrum from short pulse laser produced charged particle beams.

Chen, S. N.; Gauthier, M.; Higginson, D. P.; Dorard, S.; Marqučs, J.-R.; Fuchs, J. [LULI, École Polytechnique, CNRS, CEA, UPMC, 91128 Palaiseau (France)] [LULI, École Polytechnique, CNRS, CEA, UPMC, 91128 Palaiseau (France); Mangia, F.; Atzeni, S. [Dipartimento SBAI, Universitŕ di Roma “La Sapienza,” Roma (Italy)] [Dipartimento SBAI, Universitŕ di Roma “La Sapienza,” Roma (Italy); Riquier, R. [LULI, École Polytechnique, CNRS, CEA, UPMC, 91128 Palaiseau (France) [LULI, École Polytechnique, CNRS, CEA, UPMC, 91128 Palaiseau (France); CEA, DAM, DIF, F-91297 Arpajon (France)

2014-04-15T23:59:59.000Z

267

zBootes : z-band Photometry in the NOAO Deep Wide-Field Survey Bootes Field  

E-Print Network [OSTI]

We present zBootes, a new z-band photometric imaging campaign of 7.62 square degrees in the NOAO Deep Wide-Field Survey (NDWFS) Bootes field. In this paper, all of the images for this survey are released as well as the associated catalogs. The final zBootes catalogs are complete (at the 50% level) to 22.7 mag over 50% of the field. With these depths, the zBootes images should be sensitive to L* galaxies to z~1 over much of the survey area. These data have several possible applications including searching for and characterizing high-redshift quasars and brown dwarfs and providing added constraints to photometric redshift determinations of galaxies and active galaxies to moderate redshift. The zBootes imaging adds photometric data at a new wavelength to the existing wealth of multi-wavelength observations of the NDWFS Bootes field.

Richard J. Cool

2006-11-16T23:59:59.000Z

268

Wavelength Invariant Bi/In Thermal Resist As A Si Anisotropic Etch Masking Layer And Direct Write Photomask Material  

E-Print Network [OSTI]

which form an etch resistant material at ~7 mJ/cm2 laser exposures with near wavelength invariance fromWavelength Invariant Bi/In Thermal Resist As A Si Anisotropic Etch Masking Layer And Direct Write Photomask Material Glenn Chapman1 , Yuqiang Tu and Jun Peng School of Engineering Science, Simon Fraser

Chapman, Glenn H.

269

Micron-Resolution Photocurrent of CdTe Solar Cells Using Multiple Wavelengths Jason F. Hiltner1  

E-Print Network [OSTI]

Micron-Resolution Photocurrent of CdTe Solar Cells Using Multiple Wavelengths Jason F. Hiltner1 variations in the quantum efficiency near the CdTe band gap, which track intermixing of Cd wavelengths with energies near and slightly below the CdTe band gap (1.5 eV) to be used. Temperature tuning

Sites, James R.

270

Ion Acceleration by Short Chirped Laser Pulses  

E-Print Network [OSTI]

Direct laser acceleration of ions by short frequency-chirped laser pulses is investigated theoretically. We demonstrate that intense beams of ions with a kinetic energy broadening of about 1 % can be generated. The chirping of the laser pulse allows the particles to gain kinetic energies of hundreds of MeVs, which is required for hadron cancer therapy, from pulses of energies of the order of 100 J. It is shown that few-cycle chirped pulses can accelerate ions more efficiently than long ones, i.e. higher ion kinetic energies are reached with the same amount of total electromagnetic pulse energy.

Li, Jian-Xing; Keitel, Christoph H; Harman, Zoltán

2015-01-01T23:59:59.000Z

271

Loop quantum gravity - a short review  

E-Print Network [OSTI]

In this article we review the foundations and the present status of loop quantum gravity. It is short and relatively non-technical, the emphasis is on the ideas, and the flavor of the techniques. In particular, we describe the kinematical quantization and the implementation of the Hamilton constraint, as well as the quantum theory of black hole horizons, semiclassical states, and matter propagation. Spin foam models and loop quantum cosmology are mentioned only in passing, as these will be covered in separate reviews to be published alongside this one.

Sahlmann, Hanno

2010-01-01T23:59:59.000Z

272

Neutron scattering and extra short range interactions  

E-Print Network [OSTI]

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

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

2007-11-14T23:59:59.000Z

273

Short rise time intense electron beam generator  

DOE Patents [OSTI]

A generator for producing an intense relativisitc electron beam having a subnanosecond current rise time includes a conventional generator of intense relativistic electrons feeding into a short electrically conductive drift tube including a cavity containing a working gas at a low enough pressure to prevent the input beam from significantly ionizing the working gas. Ionizing means such as a laser simultaneously ionize the entire volume of working gas in the cavity to generate an output beam having a rise time less than one nanosecond.

Olson, C.L.

1984-03-16T23:59:59.000Z

274

Short-Term Energy Outlook Figures  

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

Independent Statistics & Analysis" Independent Statistics & Analysis" ,"U.S. Energy Information Administration" ,"Short-Term Energy Outlook Figures, December 2013" ,"U.S. Prices" ,,"West Texas Intermediate (WTI) Crude Oil Price" ,,"U.S. Gasoline and Crude Oil Prices" ,,"U.S. Diesel Fuel and Crude Oil Prices" ,,"Henry Hub Natural Gas Price" ,,"U.S. Natural Gas Prices" ,"World Liquid Fuels" ,,"World Liquid Fuels Production and Consumption Balance" ,,"Estimated Unplanned Crude Oil Production Outages Among OPEC Producers" ,,"Estimated Unplanned Crude Oil Production Disruptions Among non-OPEC Producers" ,,"World Liquid Fuels Consumption" ,,"World Liquid Fuels Consumption Growth"

275

Integro-differential modeling of ICRH wave propagation and damping at arbitrary cyclotron harmonics and wavelengths in tokamaks  

SciTech Connect (OSTI)

Both at low and higher cyclotron harmonics, properly accounting for finite Larmor radius effects is crucial in many ion cyclotron resonance frequency heating scenarios creating high energy tails. The present paper discusses ongoing work to extend the 1D TOMCAT wave equation solver [D. Van Eester and R. Koch, Plasma Phys. Contr. Fusion 40 (1998) 1949] to arbitrary harmonics and arbitrary wavelengths. Rather than adopting the particle position, the guiding center position is used as the independent variable when writing down an expression for the dielectric response. Adopting a philosophy originally due to Kaufman [A.N. Kaufman, Phys. Fluids 15 (1972) 1063], the relevant dielectric response in the Galerkin formalism is written in a form where the electric field and the test function vector appear symmetrically, which yields a power balance equation that guarantees non-negative absorption for any wave type for Maxwellian plasmas. Moreover, this choice of independent variable yields intuitive expressions that can directly be linked to the corresponding expressions in the RF diffusion operator. It also guarantees that a positive definite power transfer from waves to particles is ensured for any of the wave modes in a plasma in which all populations have a Maxwellian distribution, as is expected from first principles. Rather than relying on a truncated Taylor series expansion of the dielectric response, an integro-differential approach that retains all finite Larmor radius effects [D. Van Eester and E. Lerche, Plasma Phys. Control. Fusion 55 (2013) 055008] is proposed.

Van Eester, D.; Lerche, E. [LPP-ERM/KMS, Association Euratom-Belgian State, TEC Partner, Brussels (Belgium)

2014-02-12T23:59:59.000Z

276

Excitation wavelength dependence of water-window line emissions from boron-nitride laser-produced plasmas  

SciTech Connect (OSTI)

We investigated the effects of laser excitation wavelength on water-window emission lines of laser-produced boron-nitride plasmas. Plasmas are produced by focusing 1064 nm and harmonically generated 532 and 266 nm radiation from a Nd:YAG laser on BN target in vacuum. Soft x-ray emission lines in the water-window region are recorded using a grazing-incidence spectrograph. Filtered photodiodes are used to obtain complementary data for water-window emission intensity and angular dependence. Spectral emission intensity changes in nitrogen Ly-{alpha} and He-{alpha} are used to show how laser wavelength affects emission. Our results show that the relative intensity of spectral lines is laser wavelength dependent, with the ratio of Ly-{alpha} to He-{alpha} emission intensity decreasing as laser wavelength is shortened. Filtered photodiode measurements of angular dependence showed that 266 and 532 nm laser wavelengths produce uniform emission.

Crank, M.; Harilal, S. S.; Hassan, S. M.; Hassanein, A. [Center for Materials Under Extreme Environment, School of Nuclear Engineering, Purdue University, West Lafayette, Indiana 47907 (United States)

2012-02-01T23:59:59.000Z

277

Study on Short Weapon in Traditional Martial Arts  

Science Journals Connector (OSTI)

Short weapons were the general name of short handheld combating and fighting weapons in ancient China, and were called by ... with a variety of longer combating and fighting weapons. In ancient China, there were ...

Xiao-dao Chen

2013-01-01T23:59:59.000Z

278

21W.755 Writing and Reading Short Stories, Fall 2006  

E-Print Network [OSTI]

This class will focus on the craft of the short story, which we will explore through reading great short stories, writers speaking about writing, writing exercises and conducting workshops on original stories.

Lewitt, Shariann

279

Long Wave/Short Wave Resonance in Equatorial Waves  

Science Journals Connector (OSTI)

It is shown that resonant coupling between ultra long equatorial Rossby waves and packets of either short Rossby or short westward-traveling gravity waves is possible. Simple analytic formulas give the discrete value of the packet wave number k, ...

John P. Boyd

1983-03-01T23:59:59.000Z

280

ARM - Field Campaigns  

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

alpacas clouds-anvil german-scene instrumentfield pye-night racoro-inst rhubc-layout snowy-site twpice-ship walter-annemarie alpacas clouds-anvil german-scene instrumentfield pye-night racoro-inst rhubc-layout snowy-site twpice-ship walter-annemarie How Do I Propose a Campaign? First, review the guidelines for submitting proposals. Next, submit a preproposal; a short summary of the proposed campaign. Wait for a response from the Infrastructure Management Board (IMB) and/or ARM Science Board. A full proposal or science plan, may be requested. Decision is made-now what is expected? ARM Climate Research Facility users regularly conduct field campaigns to augment routine data acquisitions and to test and validate new instruments. Announcements 13 Dec 2013 Now accepting proposals for use of an AMF, AAF, or augment observations at one of our fixed sites. Smaller campaigns in FY2014 and FY2015 can also be

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


281

Sensor for detecting changes in magnetic fields  

DOE Patents [OSTI]

A sensor for detecting changes in the magnetic field of the equilibrium-field coil of a Tokamak plasma device comprises a pair of bifilar wires disposed circumferentially, one inside and one outside the equilibrium-field coil. Each is shorted at one end. The difference between the voltages detected at the other ends of the bifilar wires provides a measure of changing flux in the equilibrium-field coil. This difference can be used to detect faults in the coil in time to take action to protect the coil.

Praeg, Walter F. (Palos Park, IL)

1981-01-01T23:59:59.000Z

282

Sensor for detecting changes in magnetic fields  

DOE Patents [OSTI]

A sensor is described for detecting changes in the magnetic field of the equilibrium-field coil of a Tokamak plasma device that comprises a pair of bifilar wires disposed circumferentially, one inside and one outside the equilibrium-field coil. Each is shorted at one end. The difference between the voltages detected at the other ends of the bifilar wires provides a measure of changing flux in the equilibrium-field coil. This difference can be used to detect faults in the coil in time to take action to protect the coil.

Praeg, W.F.

1980-02-26T23:59:59.000Z

283

About ÂŤEffectiveÂŽ Height of the Aerosol Atmosphere in Visible and IR Wavelength Range  

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

"Effective" Height of the Aerosol Atmosphere in "Effective" Height of the Aerosol Atmosphere in Visible and IR Wavelength Range V. N. Uzhegov, D. M. Kabanov, M. V. Panchenko, Yu. A. Pkhalagov, and S. M. Sakerin Institute of Atmospheric Optics Tomsk, Russia Introduction Aerosol component of the atmosphere is one of the important factors affecting the radiation budget of the space - atmosphere - underlying surface system in visible and infrared (IR) wavelength ranges. It is extremely important to take into account the contribution of this component into the extinction of solar radiation under cloudless sky conditions. Sometimes it is important to know not only the total value of the aerosol component of extinction, but also to have the possibility to estimate the "effective" height of

284

Ground-state cooling of a trapped ion using long-wavelength radiation  

E-Print Network [OSTI]

We demonstrate ground-state cooling of a trapped ion using long-wavelength radiation. This is a powerful tool for the implementation of quantum operations, where long-wavelength radiation instead of lasers is used for motional quantum state engineering. We measure a mean phonon number of $\\overline{n} = 0.13(4)$ after sideband cooling, corresponding to a ground-state occupation probability of 88(7)\\%. After preparing in the vibrational Fock state $\\left|n=0\\right\\rangle$, we implement sideband Rabi oscillations which last for more than 10 ms, demonstrating the long coherence time of our system. We also use the ability to ground-state cool to accurately measure the motional heating rate and report a reduction by almost two orders of magnitude compared to our previously measured result, which we attribute to carefully eliminating sources of electrical noise in the system.

Weidt, S; Webster, S C; Standing, E D; Rodriguez, A; Webb, A E; Lekitsch, B; Hensinger, W K

2015-01-01T23:59:59.000Z

285

Ground-state cooling of a trapped ion using long-wavelength radiation  

E-Print Network [OSTI]

We demonstrate ground-state cooling of a trapped ion using long-wavelength radiation. This is a powerful tool for the implementation of quantum operations, where long-wavelength radiation instead of lasers is used for motional quantum state engineering. We measure a mean phonon number of $\\overline{n} = 0.13(4)$ after sideband cooling, corresponding to a ground-state occupation probability of 88(7)\\%. After preparing in the vibrational Fock state $\\left|n=0\\right\\rangle$, we implement sideband Rabi oscillations which last for more than 10 ms, demonstrating the long coherence time of our system. We also use the ability to ground-state cool to accurately measure the motional heating rate and report a reduction by almost two orders of magnitude compared to our previously measured result, which we attribute to carefully eliminating sources of electrical noise in the system.

S. Weidt; J. Randall; S. C. Webster; E. D. Standing; A. Rodriguez; A. E. Webb; B. Lekitsch; W. K. Hensinger

2015-01-07T23:59:59.000Z

286

High-performance parallel processors based on star-coupled wavelength division multiplexing optical interconnects  

DOE Patents [OSTI]

As the performance of individual elements within parallel processing systems increases, increased communication capability between distributed processor and memory elements is required. There is great interest in using fiber optics to improve interconnect communication beyond that attainable using electronic technology. Several groups have considered WDM, star-coupled optical interconnects. The invention uses a fiber optic transceiver to provide low latency, high bandwidth channels for such interconnects using a robust multimode fiber technology. Instruction-level simulation is used to quantify the bandwidth, latency, and concurrency required for such interconnects to scale to 256 nodes, each operating at 1 GFLOPS performance. Performance scales have been shown to .apprxeq.100 GFLOPS for scientific application kernels using a small number of wavelengths (8 to 32), only one wavelength received per node, and achievable optoelectronic bandwidth and latency.

Deri, Robert J. (Pleasanton, CA); DeGroot, Anthony J. (Castro Valley, CA); Haigh, Ronald E. (Arvada, CO)

2002-01-01T23:59:59.000Z

287

Broadband, stable and highly coherent supercontinuum generation at telecommunication wavelengths in an hydrogenated amorphous silicon waveguide  

E-Print Network [OSTI]

Hydrogenated amorphous silicon (a:Si-H) has recently been recognized as a highly nonlinear CMOS compatible photonic platform. We experimentally demonstrate the generation of a supercontinuum (SC) spanning over 500 nm in a-Si:H photonic wire waveguide at telecommunication wavelengths using femtosecond input pulse with energy lower than 5 pJ. Numerical modeling of pulse propagation in the waveguide, based on the experimentally characterized dispersion profile, shows that the supercontinuum is the result of soliton fission and dispersive wave generation. It is demonstrated that the SC is highly coherent and that the waveguides do not suffer from material degradation under femtosecond pulse illumination. Finally, a direct comparison of SC generation in c-Si and a-Si:H waveguides confirms the higher performances of a-Si:H over c-Si for broadband low power SC generation at telecommunication wavelengths.

Leo, F; Kuyken, B; Roelkens, G; Gorza, S -P

2014-01-01T23:59:59.000Z

288

ACCURATE RITZ WAVELENGTHS OF PARITY-FORBIDDEN [Co II] AND [V II] LINES OF ASTROPHYSICAL INTEREST  

SciTech Connect (OSTI)

We report a comprehensive list of accurate Ritz wavelengths for parity-forbidden [Co II] and [V II] lines obtained from the analysis of energy levels measured in the laboratory with Fourier transform emission spectroscopy. Such lines, particularly those in the infrared, are in demand for the analysis of low-density astrophysical plasmas in and around objects such as planetary nebulae, star-forming regions, and active galactic nuclei. Transitions between all known metastable levels of Co II and V II are included in our analysis, producing wavelengths for 1477 [V II] lines and 782 [Co II] lines. Of these, 170 [V II] lines and 171 [Co II] lines arise from transitions with calculated transition probabilities greater than 1 Multiplication-Sign 10{sup -2} s{sup -1} and upper level excitations of less than 5 eV, and thus are likely to be observed in astrophysical spectra.

Ruffoni, M. P.; Pickering, J. C., E-mail: m.ruffoni@imperial.ac.uk [Blackett Laboratory, Department of Physics, Imperial College London, London SW7 2AZ (United Kingdom)

2013-08-15T23:59:59.000Z

289

North American Short Line and Regional Railroads Industry Report  

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

Short Line and American Short Line and Short Line and American Short Line and Regional Railroad Association Regional Railroad Association " " The Voice of America The Voice of America ' ' s Independent Railroads s Independent Railroads " " 4/27/2005 2 ASLRRA Membership ASLRRA Membership 0 100 200 300 400 500 600 700 800 Total Number of Member Companies 1943 1953 1963 1973 1983 1993 2003 Year ASLRRA Member History (1943 - 2003) Associate Railroad

290

Short-term energy outlook quarterly projections. Third quarter 1997  

SciTech Connect (OSTI)

This document presents the 1997 third quarter short term energy projections. Information is presented for fossil fuels and renewable energy.

NONE

1997-07-01T23:59:59.000Z

291

Chemical detection and laser wavelength stabilization employing spectroscopic absorption via laser compliance voltage sensing  

DOE Patents [OSTI]

Systems and methods are disclosed that provide a direct indication of the presence and concentration of an analyte within the external cavity of a laser device that employ the compliance voltage across the laser device. The systems can provide stabilization of the laser wavelength. The systems and methods can obviate the need for an external optical detector, an external gas cell, or other sensing region and reduce the complexity and size of the sensing configuration.

Taubman, Matthew S; Phillips, Mark C

2014-03-18T23:59:59.000Z

292

UV-Raman spectroscopy on nanotubes@zeolite Wavelength dependence Ab initio calculations  

E-Print Network [OSTI]

UV-Raman spectroscopy on nanotubes@zeolite June, 2005 Wavelength dependence Ab initio calculations 4 Energy (eV) 0 2 4 Energy (eV) (arb.units) (2,1) (4,1) (5,0) (3,3) (4,2)(4,0) (2,2) (3,0) 1Institut involving the peak at 650 cm-1. Nanotubes grown inside the channels of zeolite crystals are constrained

Nabben, Reinhard

293

Molecular beam epitaxy of InP-based alloys for long-wavelength vertical cavity lasers  

E-Print Network [OSTI]

InGaAs and InGaAsP, are well devel- oped, having been deployed in commercial long-wavelength edge- ventional lattice-matched alloys to InP, AlInGaAs, and In- GaAsP do not have sufficient index contrast of absorption and dis- persion minima in conventional silica fiber; their circular output mode shape, low

Coldren, Larry A.

294

Hurst exponents for short time series  

Science Journals Connector (OSTI)

A concept called balanced estimator of diffusion entropy is proposed to detect quantitatively scalings in short time series. The effectiveness is verified by detecting successfully scaling properties for a large number of artificial fractional Brownian motions. Calculations show that this method can give reliable scalings for short time series with length ?102. It is also used to detect scalings in the Shanghai Stock Index, five stock catalogs, and a total of 134 stocks collected from the Shanghai Stock Exchange Market. The scaling exponent for each catalog is significantly larger compared with that for the stocks included in the catalog. Selecting a window with size 650, the evolution of scaling for the Shanghai Stock Index is obtained by the window's sliding along the series. Global patterns in the evolutionary process are captured from the smoothed evolutionary curve. By comparing the patterns with the important event list in the history of the considered stock market, the evolution of scaling is matched with the stock index series. We can find that the important events fit very well with global transitions of the scaling behaviors.

Jingchao Qi and Huijie Yang

2011-12-19T23:59:59.000Z

295

Multi-wavelength analysis of high energy electrons in solar flares: a case study of August 20, 2002 flare  

E-Print Network [OSTI]

A multi-wavelength spatial and temporal analysis of solar high energy electrons is conducted using the August 20, 2002 flare of an unusually flat (gamma=1.8) hard X-ray spectrum. The flare is studied using RHESSI, Halpha, radio, TRACE, and MDI observations with advanced methods and techniques never previously applied in the solar flare context. A new method to account for X-ray Compton backscattering in the photosphere (photospheric albedo) has been used to deduce the primary X-ray flare spectra. The mean electron flux distribution has been analysed using both forward fitting and model independent inversion methods of spectral analysis. We show that the contribution of the photospheric albedo to the photon spectrum modifies the calculated mean electron flux distribution, mainly at energies below 100 keV. The positions of the Halpha emission and hard X-ray sources with respect to the current-free extrapolation of the MDI photospheric magnetic field and the characteristics of the radio emission provide evidence of the closed geometry of the magnetic field structure and the flare process in low altitude magnetic loops. In agreement with the predictions of some solar flare models, the hard X-ray sources are located on the external edges of the Halpha emission and show chromospheric plasma heated by the non-thermal electrons. The fast changes of Halpha intensities are located not only inside the hard X-ray sources, as expected if they are the signatures of the chromospheric response to the electron bombardment, but also away from them.

J. Kasparova; M. Karlicky; E. P. Kontar; R. A. Schwartz; B. R. Dennis

2005-08-30T23:59:59.000Z

296

Dynamical ionization ignition of clusters in intense and short laser pulses  

E-Print Network [OSTI]

The electron dynamics of rare gas clusters in laser fields is investigated quantum mechanically by means of time-dependent density functional theory. The mechanism of early inner and outer ionization is revealed. The formation of an electron wave packet inside the cluster shortly after the first removal of a small amount of electron density is observed. By collisions with the cluster boundary the wave packet oscillation is driven into resonance with the laser field, hence leading to higher absorption and ionization. Although the mechanism is sensitive to the laser frequency, any plasma resonances are found to be insignificant for the cluster sizes, the short pulse durations, and the modest charge states under consideration.

Bauer, D

2003-01-01T23:59:59.000Z

297

Short-term energy outlook quarterly projections. First quarter 1994  

SciTech Connect (OSTI)

The Energy Information Administration (EIA) prepares quarterly, short- term energy supply, demand, and price projections for publication in February, May, August, and November in the Short-Term Energy Outlook (Outlook). An annual supplement analyzes the performance of previous forecasts, compares recent cases with those of other forecasting services, and discusses current topics related to the short-term energy markets.

Not Available

1994-02-07T23:59:59.000Z

298

Short communication Satellite-derived surface water pCO2 and airsea CO2 fluxes  

E-Print Network [OSTI]

Short communication Satellite-derived surface water pCO2 and air­sea CO2 fluxes in the northern for the estimation of the partial pressure of carbon dioxide (pCO2) and air­sea CO2 fluxes in the northern South), respectively, the monthly pCO2 fields were computed. The derived pCO2 was compared with the shipboard pCO2

299

August 2012 Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

August 2012 1 August 2012 1 August 2012 Short-Term Energy Outlook Highlights ď‚· EIA projects that the Brent crude oil spot price will average about $103 per barrel during the second half of 2012, about $3.50 per barrel higher than in last month's Outlook. The forecast Brent crude oil spot price falls to an average of $100 per barrel in 2013. The projected West Texas Intermediate (WTI) crude oil spot price discount to Brent crude oil narrows from about $14 in the third quarter of 2012 to $9 by late 2013. These price forecasts assume that world oil-consumption-weighted real gross domestic product (GDP), which increased by 3.0 percent in 2011, grows by 2.8 percent in 2012 and 2.9

300

Short-Term Energy Outlook June 2013  

Gasoline and Diesel Fuel Update (EIA)

1 1 June 2013 Short-Term Energy Outlook (STEO) Highlights * After increasing to $119 per barrel in early February 2013, the Brent crude oil spot price fell to a low of $97 per barrel in mid-April and then recovered to an average of $103 per barrel in May. EIA expects that the Brent crude oil spot price will average $102 per barrel over the second half of 2013, and $100 per barrel in 2014. * EIA expects the price of regular gasoline will average $3.53 per gallon over the summer driving season (April through September). The annual average regular gasoline retail price is projected to decline from $3.63 per gallon in 2012 to $3.49 per gallon in 2013 and to $3.37 per gallon in 2014. Energy price forecasts are highly uncertain, and the current values of

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


301

Short Term Energy Outlook, February 2003  

Gasoline and Diesel Fuel Update (EIA)

3 3 1 Short-Term Energy Outlook February 2003 Overview World Oil Markets. World oil markets will likely remain tight through most of 2003, as petroleum inventories and global spare production capacity continue to dwindle amid blasts of cold weather and constrained output from Venezuela. OPEC efforts to increase output to make up for lower Venezuela output has reduced global spare production capacity to only 2 million barrels per day, leaving little room to make up for unexpected supply or demand surprises. Meanwhile, the average West Texas Intermediate (WTI) crude oil price increased by $3.50 to $33 per barrel from December to January (Figure 1). For the year 2003, WTI oil prices are expected to remain over $30 per barrel, even though Venezuelan output appears to be moving toward normal sooner than expected. Also,

302

Berkeley Lab: Nearby Short-Term Accommodations  

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

Accommodations Accommodations Visitor Information Maps and Directions to the Lab Offsite Shuttle Bus Service Bay Area Mass Transit Information Site Access Parking Permits and Gate Passes UC Berkeley Campus Map Nearby Short-Term Accommodations Guest House Berkeley Lab Guest House - The Berkeley Lab guest house is conveniently located on the Lawrence Berkeley National Laboratory campus and features 57 tastefully appointed guest rooms, many with spectacular views of the San Francisco bay, skyline, and City of Berkeley. The guest house is only a few minutes away from the University of California Berkeley Campus and the dynamic Berkeley community itself. It is available to visiting researchers and those conducting business with the University. The Faculty Club * U.C. Campus

303

Short Term Energy Outlook ,November 2002  

Gasoline and Diesel Fuel Update (EIA)

November 2002 November 2002 1 Short-Term Energy Outlook November 2002 Overview World Oil Markets: During the past 3-4 months, OPEC 10 production has risen more quickly than projected, thus reducing upward pressure on prices. More specifically, while the West Texas Intermediate (WTI) crude oil spot price averaged $28.84 in October, about $6.70 per barrel above the year-ago level (Figure 1), the WTI average price for fourth quarter 2002 is now projected to soften to $28.20, which is about $2 per barrel below our fourth-quarter projection from last month. Meanwhile, OECD inventory levels, which are now approaching 5 -year lows, should begin to rise over the next few months as additional supplies reach markets, and return to the middle of their observed range by spring.

304

Short-Term Energy Outlook July 2013  

Gasoline and Diesel Fuel Update (EIA)

1 1 July 2013 Short-Term Energy Outlook (STEO) Highlights ď‚· The U.S. Energy Information Administration (EIA) expects that the Brent crude oil spot price will average $102 per barrel over the second half of 2013, and $100 per barrel in 2014. This forecast assumes there are no disruptions to energy markets arising from the recent unrest in Egypt. After increasing to $119 per barrel in early February 2013, the Brent crude oil spot price fell to a low of $97 per barrel in mid-April and then recovered to an average of $103 per barrel in May and June, about the same as its average over the same two-month period last year. ď‚· The discount of West Texas Intermediate (WTI) crude oil to Brent crude oil, which averaged $18 per barrel in 2012 and increased to a monthly average of more than $20 per barrel in

305

Short Term Energy Outlook, March 2003  

Gasoline and Diesel Fuel Update (EIA)

3 3 1 Short-Term Energy Outlook March 2003 Overview World Oil Markets. February crude oil prices moved higher than expected pushed by fears of a war in Iraq, low inventories, slow recovery in Venezuelan exports, continued cold weather and sharply higher natural gas prices in the United States. West Texas Intermediate prices averaged close to $36 for the month (Figure 1), a level not seen since October 1990. Oil inventories continued lower through the month resulting in a cumulative reduction in total commercial stocks of 101 million barrels since September 30, 2002, the beginning of the heating season. Total OECD inventories reached an estimated 2,424 million barrels at the end of February, which would be the lowest level since

306

Short-Term Energy Outlook- May 2003  

Gasoline and Diesel Fuel Update (EIA)

3 3 1 Short-Term Energy Outlook May 2003 Overview World Oil Markets. The April 24 meeting of the Organization of Petroleum Exporting Countries (OPEC) raised official quotas for members (excluding Iraq) by 0.9 million barrels per day from the previous (suspended) quota to 25.4 million barrels per day. OPEC members also sought tighter compliance with quotas, calling for production cuts of 2 million barrels per day from April levels. We expect these measures to result in an average total OPEC (including Iraq) crude oil production rate of about 26.7 million barrels per day in the second and third quarters. This production level is not significantly different from our base case assumptions in last month's report. Individual OPEC country shares of these output levels will depend upon the speed with which

307

Short Term Energy Outlook ,October 2002  

Gasoline and Diesel Fuel Update (EIA)

October 2002 October 2002 1 Short-Term Energy Outlook October 2002 Overview World Oil Markets: Continued high oil prices are the result of declining OECD commercial oil inventories, worries over a potential clash with Iraq, and OPEC's decision to leave production quotas unchanged at its September meeting. Solid growth in world oil demand this winter (and for 2003 as a whole) is likely to tighten world oil markets and reduce commercial oil inventories. The West Texas Intermediate (WTI) crude oil spot price averaged $29.75 in September, about $3.50 per barrel above the year-ago level and about $10 per barrel above a low point seen last January. Home Heating Costs Outlook: While fuel supplies should remain sufficient under normal weather

308

Short course review and the future  

SciTech Connect (OSTI)

The presentations at the short course that were the basis of the present Proceedings covered many critical issues related to the objective of eliminating nuclear weapons as a means of ensuring global security and stability. This paper is based on the concluding talk, which briefly reviewed the course, offered a net assessment of where the project of elimination - a policy objective for nearly all the world's states - stands, and discussed some of the factors that need to be dealt with in achieving a nuclear weapon free world. These include understanding what 'proliferation' means and how it has changed over time, how the spread of nuclear weapons has proceeded over time, both 'vertical' in numbers and 'horizontal' to additional countries, what way the 'vector' of reversing proliferation is pointing, and the roles of nuclear energy and international governance.

Corden, Pierce S. [Center for Science, Technology and Security Policy, American Association for the Advancement of Science, Washington, DC 20005 (United States)

2014-05-09T23:59:59.000Z

309

Short Term Energy Outlook, December 2002  

Gasoline and Diesel Fuel Update (EIA)

December 2002 December 2002 1 Short-Term Energy Outlook December 2002 Overview World Oil Markets: Average crude oil prices fell by about $2.50 per barrel between October and November in response to continued high production levels from OPEC 10 countries (Figure 1). However, by the end of November oil prices had risen to end-October levels as concerns over the situations in Iraq and Venezuela pushed prices up. Oil inventories, which are currently in the lower portion of the previous 5-year range, are poised to rise to more comfortable levels soon if OPEC output continues at or above current levels. OPEC is considering cutbacks from current levels. Heating Fuels Update. As in October, weather was m uch colder than normal in November, boosting

310

DOE/EIA-0202(87/2Q) Energy Information Administration Short-Term  

Gasoline and Diesel Fuel Update (EIA)

2Q) 2Q) Energy Information Administration Short-Term Energy Outlook Quarterly Projections April 1987 . m erm Term t-Term rt-Term jrt-Term ort-Term iort-Term ion-Term ion-Term lort-Term lort-Term ort-Term ort-Term Tt-Term ".-Term -Term Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy ^nergy Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term

311

DOE/EIA-0202(86/4Q) Energy Information Administration Short-Ter  

Gasoline and Diesel Fuel Update (EIA)

6/4Q) 6/4Q) Energy Information Administration Short-Ter m Energy Outlook Quarterly Projections October 1986 .m erm Term t-Term rt-Term jrt-Term ort-Term ion-Term lort-Term ion-Term lort-Term lort-Term ort-Term ort-Term -rt-Term -t-Term -Term iiergy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy " Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term

312

Arun field  

SciTech Connect (OSTI)

The Arun field is a giant gas-condensate field operated by Mobil and Pertamina with over 20,000 acres of closure at the top of the Arun reservoir. A middle-shelf patch reef complex of early to middle Miocene age is the producing facies at the Arun field. About 1,100 ft of porous limestones, encased in shales, create a stratigraphic trap for overpressure hydrocarbons. Three main carbonate lithologies were encountered during the examination of over 4,300 ft of core; (1) a reef facies consisting of vuggy, coral encrusting, red-algal boundstones, (2) a near-reef facies consisting of foraminiferal, mixed-skeletal packstones with gravel-size coral fragments, and (3) an interreef lagoonal facies consisting of benthonic-foram packstones. Twenty-two species of corals have been identified from Arun reef facies; major reef-forming coals, listed in order of decreasing abundance, are Porites cf P. Lutes, Cyphastrea microphthalma, Astreopora myriophthalma, Styloconiella gunetheri, Porites solida, and Acropora ssp. The Arun reef is comprised of limestones (with minor amounts of dolomite). No shale beds occur in the sequence, and all carbonate facies are in communication. A pervasive microporosity, occurring throughout the Arun Limestone, results from meteoric alteration of original carbonate mud to form a microrhombic porosity that accounts for about three-fourths of the field's total porosity.

Jordan, C.F. Jr.; Abdullah, M.

1988-01-01T23:59:59.000Z

313

Estimating the Wavelength of Sodium Emission in Flame — The Easy Way  

Science Journals Connector (OSTI)

Simple “box spectroscopes” are not new. Different methods of building them at home using cheap diffraction gratings have been described. However their use has often been confined to looking at street lights discharge tubes and enjoying the beautiful spectra of various lamps. Construction of the box spectroscope usually involves a narrow slit made with metal plates or razor blades at one end and a transmission grating at the other end. The slit is directed toward a light source and the light spectrum is viewed through the grating. In the experiment described in this paper a simple box spectroscope is used along with a digital camera for making quantitative wavelength measurements.

M. Farooq Wahab

2009-01-01T23:59:59.000Z

314

Qubit transfer between photons at telecom and visible wavelengths in a slow-light atomic medium  

E-Print Network [OSTI]

We propose a method that enables efficient conversion of quantum information frequency between different regions of spectrum of light based on recently demonstrated strong parametric coupling between two narrow-band single-photon pulses propagating in a slow-light atomic medium [1]. We show that an input qubit at telecom wavelength is transformed into another at visible domain in a lossless and shape-conserving manner while keeping the initial quantum coherence and entanglement. These transformations can be realized with a quantum efficiency close to its maximum value.

A. Gogyan

2009-12-08T23:59:59.000Z

315

Reinterpretation of Wavelength-Modulated Absorption in SrTiO3 without Coexisting Phases  

Science Journals Connector (OSTI)

In a recently reported measurement of the wavelength-modulated absorption of SrTiO3, the results were interpreted as evidence for the coexistence of two phases over a temperature range of 60 K about the 105-K phase transition. We refute that interpretation by proposing an alternative which is necessary and sufficient to be fully consistent with the known properties of SrTiO3 and which is unconnected with the phase transition. We also propose an experimental test of the validity of this new interpretation.

David Redfield and William J. Burke

1972-02-14T23:59:59.000Z

316

Generation of Watt-Level Mid-Infrared Radiation by Wavelength-Conversion of an Eye-Safe Fiber Source  

Science Journals Connector (OSTI)

We obtained pulse average power in excess of 1W (at pulse repetition rate ~100 kHz) in the 3.8-4micron wavelength range by pumping a periodically-poled lithium niobate optical...

Di Teodoro, Fabio; Desmoulins, Sebastien

317

Time-resolved spectra in the 80–340-Ĺ wavelength region from Princeton Large Torus tokamak plasmas  

Science Journals Connector (OSTI)

High-resolution spectra from the Princeton Large Torus plasma have been recorded by a 2-m Schwob–Fraenkel soft-x-ray multichannel spectrometer. Spectra covering a wavelength range of...

Wouters, A; Davé, J H; Feldman, U; Seely, J F; Suckewer, S; Hinnov, E; Schwob, J L

1987-01-01T23:59:59.000Z

318

DOE/EIA-0202(84/1Q) Short-Term Energy Outlook Quarterly Projections  

Gasoline and Diesel Fuel Update (EIA)

1Q) 1Q) Short-Term Energy Outlook Quarterly Projections February 1984 Published: March 1984 Energy Information Administration Washington, D.C. t rt jrt- .ort- iort- iort- .iort- iort- lort- Short-Term' Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term

319

Effect of the electric field on the primary scintillation from CF4  

Science Journals Connector (OSTI)

The effect of an electric field on the primary scintillation from CF4 in the ultraviolet and visible wavelength regions (200–800 nm) is reported. The study was performed in the pressure range from 1 to 5 bar and at electric fields of up to 2 kV/cm. Photon emission spectra, fully corrected for the detection response, and the absolute photon yields in the ultraviolet and visible regions are reported. The CF4 emission spectra and the photon fluxes show no variations with the field at low pressures ( ? 1 bar ) , while at higher pressures the effect of the field on the scintillation is strong: the ultraviolet emission intensity increases and the visible intensity decreases with the field strength. Time spectra of the primary scintillation for several applied electric field strengths are also reported for the two wavelength regions of light emission.

A. Morozov; M.M.F.R. Fraga; L. Pereira; L.M.S. Margato; S.T.G. Fetal; B. Guerard; G. Manzin; F.A.F. Fraga

2011-01-01T23:59:59.000Z

320

Nevada Field Office  

National Nuclear Security Administration (NNSA)

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


321

Numerical Modelling of Geothermal Systems a Short Introduction | Open  

Open Energy Info (EERE)

Numerical Modelling of Geothermal Systems a Short Introduction Numerical Modelling of Geothermal Systems a Short Introduction Jump to: navigation, search OpenEI Reference LibraryAdd to library General: Numerical Modelling of Geothermal Systems a Short Introduction Authors Mauro Cacace, Björn Onno Kaiser and Yvonne Cherubini Published Helmholtz Association, The date "N/A" was not understood.The date "N/A" was not understood. DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Numerical Modelling of Geothermal Systems a Short Introduction Citation Mauro Cacace,Björn Onno Kaiser,Yvonne Cherubini. N/A. Numerical Modelling of Geothermal Systems a Short Introduction. N/A. Helmholtz Association. N/Ap. Retrieved from "http://en.openei.org/w/index.php?title=Numerical_Modelling_of_Geothermal_Systems_a_Short_Introduction&oldid=688986"

322

Molecules in intense laser fields: Beyond the dipole approximation  

SciTech Connect (OSTI)

The time-dependent Schroedinger equation is solved for a Born-Oppenheimer (static nuclei) three-dimensional H{sub 2}{sup +} in super intense laser fields (I=4x10{sup 18}, 10{sup 19}, and 4x10{sup 19} W/cm{sup 2}) at wavelength {lambda}{sub L}=45 nm and 25 nm to assess the influence of nondipolar (magnetic) effects on high order harmonic generation spectra in molecules. It is found that even harmonics appear due to the magnetic field component direction perpendicular to the electric field polarization with intensities about two orders of magnitude less than the odd harmonics emitted along the electric field polarization. The even harmonics exhibit plateaus with cutoffs which exceed in intensity the odd harmonic plateaus and maximum energies predicted by semiclassical electron recollision models. Although the spectra are weak, the wavelength of the recollision electron in the maximum energy regions correspond to subatomic dimensions and the corresponding emitted photons have subnanometer wavelengths.

Bandrauk, A. D.; Lu, H. Z. [Laboratoire de Chimie Theorique, Universite de Sherbrooke, Sherbrooke, Que, J1K 2R1 (Canada)

2006-01-15T23:59:59.000Z

323

X-Ray Diffraction from Calcite for Wave-Lengths 1.5 to 5 Angstroms  

Science Journals Connector (OSTI)

Theoretical expressions for the coefficient of reflection, percent reflection, and width of the line to be expected from the second crystal of a double spectrometer in the (1, -1) position, based on Darwin's theory of reflection from a perfect crystal, as modified by Prins, are evaluated for calcite for six lines in the region 1.54 to 5A. This region includes, at 3.06A, the critical absorption limit of calcium. With a specially designed double-crystal spectrometer, these properties of the rocking curve from the second crystal for ten wave-lengths, copper K? radiation and nine spectrum lines selected from the uranium M series, are experimentally measured and these results compared with the calculated values. The agreement between the observed and calculated rocking curve widths is excellent throughout the entire region and gives no evidence of mosaic structure in the crystals. The calculated values of percent reflection are consistently above those observed by some 16 percent. Good agreement is obtained for the values of the coefficient of reflection for wave-lengths shorter than 4A including those close to and on either side of the calcium absorption limit. No correction for temperature motion of the atoms has been attempted, but it seems possible that such a correction would give very satisfactory agreement between theory and experiment, showing that calcite surfaces may be obtained for which there is no evidence of mosaic structure from the diffraction of x-rays.

Lyman G. Parratt

1932-09-01T23:59:59.000Z

324

Simultaneous multi-wavelength campaign on PKS 2005-489 in a high state  

E-Print Network [OSTI]

The high-frequency peaked BL Lac object PKS 2005-489 was the target of a multi-wavelength campaign with simultaneous observations in the TeV gamma-ray (H.E.S.S.), GeV gamma-ray (Fermi/LAT), X-ray (RXTE, Swift), UV (Swift) and optical (ATOM, Swift) bands. This campaign was carried out during a high flux state in the synchrotron regime. The flux in the optical and X-ray bands reached the level of the historical maxima. The hard GeV spectrum observed with Fermi/LAT connects well to the very high energy (VHE, E>100GeV) spectrum measured with H.E.S.S. with a peak energy between ~5 and 500 GeV. Compared to observations with contemporaneous coverage in the VHE and X-ray bands in 2004, the X-ray flux was ~50 times higher during the 2009 campaign while the TeV gamma-ray flux shows marginal variation over the years. The spectral energy distribution during this multi-wavelength campaign was fit by a one zone synchrotron self-Compton model with a well determined cutoff in X-rays. The parameters of a one zone SSC model ar...

Abramowski, A; Aharonian, F; Akhperjanian, A G; Anton, G; Barnacka, A; de Almeida, U Barres; Bazer-Bachi, A R; Becherini, Y; Becker, J; Behera, B; Bernlöhr, K; Bochow, A; Boisson, C; Bolmont, J; Bordas, P; Borrel, V; Brucker, J; Brun, F; Brun, P; Bulik, T; Büsching, I; Casanova, S; Cerruti, M; Chadwick, P M; Charbonnier, A; Chaves, R C G; Cheesebrough, A; Chounet, L -M; Clapson, A C; Coignet, G; Conrad, J; Dalton, M; Daniel, M K; Davids, I D; Degrange, B; Deil, C; Dickinson, H J; Djannati-Ataď, A; Domainko, W; Drury, L O'C; Dubois, F; Dubus, G; Dyks, J; Dyrda, M; Egberts, K; Eger, P; Espigat, P; Fallon, L; Farnier, C; Fegan, S; Feinstein, F; Fernandes, M V; Fiasson, A; Fontaine, G; Förster, A; Füßling, M; Gabici, S; Gallant, Y A; Gast, H; Gérard, L; Gerbig, D; Giebels, B; Glicenstein, J F; Glück, B; Goret, P; Göring, D; Hague, J D; Hampf, D; Hauser, M; Heinz, S; Heinzelmann, G; Henri, G; Hermann, G; Hinton, J A; Hoffmann, A; Hofmann, W; Hofverberg, P; Horns, D; Jacholkowska, A; de Jager, O C; Jahn, C; Jamrozy, M; Jung, I; Kastendieck, M A; Katarzy?ski, K; Katz, U; Kaufmann, S; Keogh, D; Kerschhaggl, M; Khangulyan, D; Khélifi, B; Klochkov, D; Klu?niak, W; Kneiske, T; Komin, Nu; Kosack, K; Kossakowski, R; Laffon, H; Lamanna, G; Lenain, J -P; Lennarz, D; Lohse, T; Lopatin, A; Lu, C -C; Marandon, V; Marcowith, A; Masbou, J; Maurin, D; Maxted, N; McComb, T J L; Medina, M C; Méhault, J; Nguyen, N; Moderski, R; Moulin, E; Naumann-Godo, M; de Naurois, M; Nedbal, D; Nekrassov, D; Nicholas, B; Niemiec, J; Nolan, S J; Ohm, S; Olive, J-F; Wilhelmi, E de Ońa; Opitz, B; Ostrowski, M; Panter, M; Arribas, M Paz; Pedaletti, G; Pelletier, G; Petrucci, P -O; Pita, S; Pühlhofer, G; Punch, M; Quirrenbach, A; Raue, M; Rayner, S M; Reimer, A; Reimer, O; Renaud, M; Reyes, R de los; Rieger, F; Ripken, J; Rob, L; Rosier-Lees, S; Rowell, G; Rudak, B; Rulten, C B; Ruppel, J; Ryde, F; Sahakian, V; Santangelo, A; Schlickeiser, R; Schöck, F M; Schönwald, A; Schwanke, U; Schwarzburg, S; Schwemmer, S; Shalchi, A; Sikora, M; Skilton, J L; Sol, H; Spengler, G; Stawarz, ?; Steenkamp, R; Stegmann, C; Stinzing, F; Sushch, I; Szostek, A; Tam, P H; Tavernet, J -P; Terrier, R; Tibolla, O; Tluczykont, M; Valerius, K; van Eldik, C; Vasileiadis, G; Venter, C; Vialle, J P; Viana, A; Vincent, P; Vivier, M; Völk, H J; Volpe, F; Vorobiov, S; Vorster, M; Wagner, S J; Ward, M; Wierzcholska, A; Zajczyk, A; Zdziarski, A A; Zech, A; Zechlin, H -S; Abdo, A A; Ackermann, M; Ajello, M; Baldini, L; Ballet, J; Barbiellini, G; Bastieri, D; Bechtol, K; Bellazzini, R; Berenji, B; Blandford, R D; Bonamente, E; Borgland, A W; Bregeon, J; Brez, A; Brigida, M; Bruel, P; Buehler, R; Buson, S; Caliandro, G A; Cameron, R A; Cannon, A; Caraveo, P A; Carrigan, S; Casandjian, J M; Cavazzuti, E; Cecchi, C; Çelik, Ö; Chekhtman, A; Cheung, C C; Chiang, J; Ciprini, S; Claus, R; Cohen-Tanugi, J; Cutini, S; Dermer, C D; de Palma, F; Silva, E do Couto e; Drell, P S; Dubois, R; Dumora, D; Escande, L; Favuzzi, C; Ferrara, E C; Focke, W B; Fortin, P; Frailis, M; Fukazawa, Y; Fusco, P; Gargano, F; Gasparrini, D; Gehrels, N; Germani, S; Giglietto, N; Giommi, P; Giordano, F; Giroletti, M; Glanzman, T; Godfrey, G; Grenier, I A; Grove, J E; Guiriec, S; Hadasch, D; Hays, E; Horan, D; Hughes, R E; Jóhannesson, G; Johnson, A S; Johnson, W N; Kamae, T; Katagiri, H; Kataoka, J; Knödlseder, J; Kuss, M; Lande, J; Latronico, L; Lee, S -H; Longo, F; Loparco, F; Lott, B; Lovellette, M N; Lubrano, P; Madejski, G M; Makeev, A; Mazziotta, M N; McConville, W; McEnery, J E; Michelson, P F; Mizuno, T; Monte, C; Monzani, M E; Morselli, A; Moskalenko, I V; Murgia, S; Nakamori, T; Nishino, S; Nolan, P L; Norris, J P; Nuss, E; Ohsugi, T; Okumura, A; Omodei, N; Orlando, E; Ormes, J F; Ozaki, M; Paneque, D; Panetta, J H; Parent, D; Pelassa, V; Pepe, M; Pesce-Rollins, M; Piron, F; Porter, T A; Rainň, S; Rando, R; Razzano, M; Sadrozinski, H F -W; Sanchez, D; Sander, A; Sgrň, C; Siskind, E J; Smith, P D; Spandre, G; Spinelli, P; Strickman, M S; Suson, D J; Takahashi, H; Takahashi, T; Tanaka, T; Thayer, J B; Thayer, J G; Thompson, D J; Tibaldo, L; Torres, D F; Tosti, G; Tramacere, A; Troja, E; Uehara, T; Usher, T L; Vandenbroucke, J; Vianello, G; Vilchez, N; Vitale, V; Waite, A P; Wang, P; Winer, B L; Wood, K S; Yang, Z; Ylinen, T; Ziegler, M

2011-01-01T23:59:59.000Z

325

THE SPECTRAL ENERGY DISTRIBUTION OF THE CARINA NEBULA FROM FAR-INFRARED TO RADIO WAVELENGTHS  

SciTech Connect (OSTI)

Multi-wavelength observations are necessary for understanding the physical properties of astrophysical sources. In this paper, we use observations in the far-infrared to radio range to derive the spectral energy distribution (SED) of the Carina nebula. To do this, we carefully subtract the irregularly varying diffuse emission from the Galactic plane, which can be of the order of 10% of the nebula flux at these wavelengths. We find that the far-infrared SED can be modeled as emission from a dust population with a single temperature T{sub d} = (34.5{sup +2.0}{sub -1.8}) K and with a spectral index of emissivity {alpha} = -1.37{sup +0.09}{sub -0.08}. We also find a total infrared luminosity of the nebula of (7.4{sup +2.5}{sub -1.4}) Multiplication-Sign 10{sup 6} L{sub Sun} and, assuming a single temperature of the dust, a mass of the dust of (9500{sup +4600}{sub -3500}) M{sub Sun }.

Salatino, M.; De Bernardis, P.; Masi, S. [Physics Department, Sapienza Universita di Roma, p.le Aldo Moro 2, I-00185 Roma (Italy); Polenta, G., E-mail: maria.salatino@roma1.infn.it [ASI Science Data Center, ESRIN, via G. Galilei, I-00044, Frascati (Italy)

2012-03-20T23:59:59.000Z

326

Dynamically polarized hydrogen target as a broadband, wavelength-independent thermal neutron spin polarizer  

SciTech Connect (OSTI)

A hydrogen-rich sample with dynamically polarized hydrogen nuclei was tested as a wavelength-independent neutron transmission spin polarizer. The experiment used a modified setup of the dynamic nuclear polarization target station at the GKSS research center. The standard solvent sample at the GKSS DNP station was used. It is 2.8 mm thick and consists of 43.4 wt% water, 54.6 wt% glycerol, and 2 wt% of EHBA-Cr(v) complex. The wavelength of the incident neutrons for the transmission experiment was {lambda} = 8.1 {angstrom} with {Delta}{lambda}/{lambda} = 10%. The polarization of neutron beam after the target sample was analyzed with a supermirror analyzer. A neutron polarization of -52% was achieved at the hydrogen polarization of -69%. Further experiments will test the feasibility of other hydrogen-rich materials, such as methane, as the polarizer. A theoretical calculation shows that a polarized methane target would allow over 95% neutron polarizations with more than 30% transmission.

Zhao, Jinkui [ORNL; Garamus, VM [GKSS Research Center, Germany; Mueller, W [GKSS Research Center, Germany; Willumeit, R [GKSS Research Center, Germany

2005-01-01T23:59:59.000Z

327

Multiple-wavelength spectroscopic quantitation of light-absorbing species in scattering media  

DOE Patents [OSTI]

An oxygen concentration measurement system for blood hemoglobin comprises a multiple-wavelength low-coherence optical light source that is coupled by single mode fibers through a splitter and combiner and focused on both a target tissue sample and a reference mirror. Reflections from both the reference mirror and from the depths of the target tissue sample are carried back and mixed to produce interference fringes in the splitter and combiner. The reference mirror is set such that the distance traversed in the reference path is the same as the distance traversed into and back from the target tissue sample at some depth in the sample that will provide light attenuation information that is dependent on the oxygen in blood hemoglobin in the target tissue sample. Two wavelengths of light are used to obtain concentrations. The method can be used to measure total hemoglobin concentration [Hb.sub.deoxy +Hb.sub.oxy ] or total blood volume in tissue and in conjunction with oxygen saturation measurements from pulse oximetry can be used to absolutely quantify oxyhemoglobin [HbO.sub.2 ] in tissue. The apparatus and method provide a general means for absolute quantitation of an absorber dispersed in a highly scattering medium.

Nathel, Howard (Albany, CA); Cartland, Harry E. (Livermore, CA); Colston, Jr., Billy W. (Livermore, CA); Everett, Matthew J. (Pleasanton, CA); Roe, Jeffery N. (San Ramon, CA)

2000-01-01T23:59:59.000Z

328

Affinity capture of specific DNA fragments with short synthetic sequences  

Science Journals Connector (OSTI)

The ability of short peptide nucleic acid (PNA) oligomers and oligonucleotides containing modified residues of 5-methylcitidine, 2-aminoadenosine, and 5-propynyl-2?-deoxyuridine (strong binding oligonucleotide...

V. S. Mikhailov; V. K. Potapov; R. N. Amirkhanov…

2013-01-01T23:59:59.000Z

329

Microsoft Word - Short Form CRADA Agreement Boilerplate Approved...  

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

flexibility such agreements afford. STEVENSON-WYDLER (15 U.S.C. 3710a) SHORT FORM COOPERATIVE RESEARCH AND DEVELOPMENT AGREEMENT (hereinafter "CRADA") No. AL-C- - BETWEEN...

330

Short-term energy outlook. Quarterly projections, Third quarter 1994  

SciTech Connect (OSTI)

The Energy Information Administration (EIA) prepares quarterly, short-term energy supply, demand, and price projections for publication in February, May, August, and November in the Short-Term Energy Outlook (Outlook). An annual supplement analyzes the performance of previous forecasts, compares recent cases with those of other forecasting services, and discusses current topics related to the short-term energy markets. (See Short-Term Energy Outlook Annual Supplement, DOE/EIA-0202). The feature article for this issue is Demand, Supply and Price Outlook for Reformulated Gasoline, 1995.

Not Available

1994-08-02T23:59:59.000Z

331

DOE/EIA-0202(88/1Q) Energy Information Administration Short-Term  

Gasoline and Diesel Fuel Update (EIA)

8/1Q) 8/1Q) Energy Information Administration Short-Term Energy Outlook Quarterly Projections January 1988 .m erm Term t-Term rt-Term jrt-Term ort-Term ion-Term ion-Term tort-Term jort-Term ion-Term ort-Term ore-Term rt-Term 't-Term -Term Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy "^nergy Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook ~">Mook Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term

332

Short-term Variations in the Galactic Environment of the Sun  

E-Print Network [OSTI]

The galactic environment of the Sun varies over short timescales as the Sun and interstellar clouds travel through space. Small variations in the dynamics, ionization, density, and magnetic field strength of the interstellar medium (ISM) surrounding the Sun yield pronounced changes in the heliosphere. We discuss essential information required to understand short-term variations in the galactic environment of the Sun, including the distribution and radiative transfer properties of nearby ISM, and variations in the boundary conditions of the heliosphere as the Sun traverses clouds. The most predictable transitions are when the Sun emerged from the Local Bubble interior and entered the cluster of local interstellar clouds flowing past the Sun, within the past 140,000 years, and again when the Sun entered the local interstellar cloud now surrounding and inside of the solar system, sometime during the past 44,000 years.

Priscilla C. Frisch; Jonathan D. Slavin

2006-01-17T23:59:59.000Z

333

Supply and Demand Shifts in the Shorting Market Lauren Cohen,  

E-Print Network [OSTI]

)) or employ equilibrium prices (e.g., rebate rates) or equilibrium quantities (e.g., short in- terest).1 For example, several recent papers use the rebate rate as a direct measure of the cost of shorting.2 The rebate rate is a fee that the lender of a stock must pay to the borrower of that stock

Kearns, Michael

334

Short gamma-ray bursts near and far  

Science Journals Connector (OSTI)

...research-article Discussion Meeting Issue Gamma-ray bursts organized by Alan Wells, Ralph...Wijers and Martin Rees Short gamma-ray bursts near and far Andrew J Levan...understanding the nature of short gamma-ray bursts (GRBs) has been rapid since...

2007-01-01T23:59:59.000Z

335

Short-Circuit Modeling of a Wind Power Plant: Preprint  

SciTech Connect (OSTI)

This paper investigates the short-circuit behavior of a WPP for different types of wind turbines. The short-circuit behavior will be presented. Both the simplified models and detailed models are used in the simulations and both symmetrical faults and unsymmetrical faults are discussed.

Muljadi, E.; Gevorgian, V.

2011-03-01T23:59:59.000Z

336

Short-term energy outlook annual supplement, 1993  

SciTech Connect (OSTI)

The Short-Term Energy Outlook Annual Supplement (supplement) is published once a year as a complement to the Short-Term Energy Outlook (Outlook), Quarterly Projections. The purpose of the Supplement is to review the accuracy of the forecasts published in the Outlook, make comparisons with other independent energy forecasts, and examine current energy topics that affect the forecasts.

NONE

1993-08-06T23:59:59.000Z

337

Propagation of ultra-short solitons in stochastic Maxwell's equations  

SciTech Connect (OSTI)

We study the propagation of ultra-short short solitons in a cubic nonlinear medium modeled by nonlinear Maxwell's equations with stochastic variations of media. We consider three cases: variations of (a) the dispersion, (b) the phase velocity, (c) the nonlinear coefficient. Using a modified multi-scale expansion for stochastic systems, we derive new stochastic generalizations of the short pulse equation that approximate the solutions of stochastic nonlinear Maxwell's equations. Numerical simulations show that soliton solutions of the short pulse equation propagate stably in stochastic nonlinear Maxwell's equations and that the generalized stochastic short pulse equations approximate the solutions to the stochastic Maxwell's equations over the distances under consideration. This holds for both a pathwise comparison of the stochastic equations as well as for a comparison of the resulting probability densities.

Kurt, Levent, E-mail: LKurt@gc.cuny.edu [Department of Science, Borough of Manhattan Community College, City University of New York, New York, New York 10007 (United States)] [Department of Science, Borough of Manhattan Community College, City University of New York, New York, New York 10007 (United States); Schäfer, Tobias [Department of Mathematics, College of Staten Island, City University of New York, Staten Island, New York 10314 (United States)] [Department of Mathematics, College of Staten Island, City University of New York, Staten Island, New York 10314 (United States)

2014-01-15T23:59:59.000Z

338

Achieving selective interrogation and sub-wavelength resolution in thin plates with embedded metamaterial acoustic lenses  

Science Journals Connector (OSTI)

In this study we present an approach to ultrasonic beam-forming and high resolution identification of acoustic sources having critical implications for applications such as structural health monitoring. The proposed concept is based on the design of dynamically tailored structural elements via embedded acoustic metamaterial lenses. This approach provides a completely new alternative to conventional phased-array technology enabling the formation of steerable and collimated (or focused) ultrasonic beams by exploiting a single transducer. Numerical results show that the ultrasonic beam can be steered by simply tuning the frequency of the excitation. Also the embedded lens can be designed to achieve sub-wavelength resolution to clustered acoustic sources which is a typical scenario encountered in incipient structural damage.

2014-01-01T23:59:59.000Z

339

Wavelength- and thickness-independent optical coatings for integrated circuit metallization layers  

SciTech Connect (OSTI)

Detailed measurements have been made of the optical properties of sputtered tantalum silicide films on aluminum layers used in integrated circuit fabrication. This new multicomponent conductor (TaSi/sub x/ on aluminum), which is currently in use because of its exceptional electrical, physical, and chemical properties, was also found to have superior optical properties compared to aluminum alone. The addition of the thin silicide layers reduces both the total hemispherical and diffuse reflectance properties by up to 45% over the 265--800-nm wavelength range with almost no dependence on film thickness. Unlike other optical coatings used on metal layers in integrated circuit manufacturing, the silicide films do not need to be removed after photolithography and pattern transfer processes are completed: aluminum wire bonding from the completed circuit (with silicide coating) to the package is highly reliable and reproducible.

Draper, B.L.; Mahoney, A.R.; Bailey, G.A.

1987-12-01T23:59:59.000Z

340

Rate equations analysis of a dual-wavelength quantum cascade laser  

Science Journals Connector (OSTI)

Abstract Based on a four-level rate equations model, we carry out a detailed analysis of the two modes of a mid-infrared quantum cascade laser operating simultaneously on two laser lines having a common upper level. Analytical solutions are obtained for the steady-states and the stability analysis of these predicts that, depending on the injected current, the device lases on either one of the two modes or on both wavelengths simultaneously. We also show through numerical simulations that the injected current influences significantly the population inversions and photon numbers dynamics trajectory of a two mode laser where the higher the current the shorter the time needed to reach saturation and therefore steady state operation.

A. Hamadou; J.-L. Thobel; S. Lamari

2013-01-01T23:59:59.000Z

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


341

Initiation of CME event observed on November 3, 2010: Multi-wavelength Perspective  

E-Print Network [OSTI]

One of the major unsolved problems in Solar Physics is that of CME initiation. In this paper, we have studied the initiation of a flare associated CME which occurred on 2010 November 03 using multi-wavelength observations recorded by Atmospheric Imaging Assembly (AIA) on board Solar Dynamics Observatory (SDO) and Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI). We report an observation of an inflow structure initially in 304~{\\AA} and in 1600~{\\AA} images, a few seconds later. This inflow strucure was detected as one of the legs of the CME. We also observed a non-thermal compact source concurrent and near co-spatial with the brightening and movement of the inflow structure. The appearance of this compact non-thermal source, brightening and movement of the inflow structure and the subsequent outward movement of the CME structure in the corona led us to conclude that the CME initiation was caused by magnetic reconnection.

Mulay, Sargam; Tripathi, Durgesh; Isobe, Hiroaki; Glesener, Lindsay

2014-01-01T23:59:59.000Z

342

Optical data of meteoritic nano-diamonds from far-ultraviolet to far-infrared wavelengths  

E-Print Network [OSTI]

We have used different spectroscopic techniques to obtain a consistent quantitative absorption spectrum of a sample of meteoritic nano-diamonds in the wavelength range from the vacuum ultraviolet (0.12 $\\mu$m) to the far infrared (100 $\\mu$m). The nano-diamonds have been isolated by a chemical treatment from the Allende meteorite (Braatz et al.2000). Electron energy loss spectroscopy (EELS) extends the optical measurements to higher energies and allows the derivation of the optical constants (n & k) by Kramers-Kronig analysis. The results can be used to restrain observations and to improve current models of the environment where the nano-diamonds are expected to have formed. We also show that the amount of nano-diamond which can be present in space is higher than previously estimated by Lewis et al. (1989).

H. Mutschke; A. C. Andersen; C. Jaeger; Th. Henning; A. Braatz

2004-08-10T23:59:59.000Z

343

Simultaneous measurements of super-radiance at multiple wavelengths from helium excited states: (I) Experiment  

E-Print Network [OSTI]

In this paper, we report the results of measurements of the intensities and delays of super-radiance decays from excited helium atoms at multiple wavelengths. The experiment was performed using extreme ultraviolet radiation produced by the free electron laser at the SPring-8 Compact SASE Source test accelerator facility as an excitation source. We observed super-radiant transitions on the $1s3p \\to 1s2s$ ($\\lambda=$502 nm), $1s3d \\to 1s2p$ ($\\lambda=$668 nm), and $1s3s \\to 1s2p$ ($\\lambda=$728 nm) transitions. The pulse energy of each transition and its delay time were measured as a function of the target helium gas density. Several interesting features of the data, some of which appear to contradict with the predictions of the simple two-level super-radiance theory, are pointed out.

Nakajima, Kyo; Iwayama, Hiroshi; Kuma, Susumu; Miyamoto, Yuki; Nagasono, Mitsuru; Ohae, Chiaki; Togashi, Tadashi; Yabashi, Makina; Shigemasa, Eiji; Sasao, Noboru

2014-01-01T23:59:59.000Z

344

DOE/EIA-0202(84/2QH Short-Term Energy Outlook Quarterly Projections  

Gasoline and Diesel Fuel Update (EIA)

2QH 2QH Short-Term Energy Outlook Quarterly Projections May 1984 Published: June 1984 Energy Information Administration Washington, D.C. t rt jrt .ort lort .iort .iort- iort- iort- '.ort- ort- .m .erm Term Term Term Term Term Term Term Term Term Term Term Term i-Term rTerm -Term xrm uergy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy ^nergy Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Short-Tern Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term

345

WAVELENGTH MEASUREMENTS OF K TRANSITIONS OF OXYGEN, NEON, AND MAGNESIUM WITH X-RAY ABSORPTION LINES  

SciTech Connect (OSTI)

Accurate atomic transition data are important in many astronomical research areas, especially for studies of line spectroscopy. Whereas transition data of He-like and H-like ions (i.e., ions in high-charge states) have been accurately calculated, the corresponding data of K transitions of neutral or low-ionized metal elements are still very uncertain. Spectroscopy of absorption lines produced in the interstellar medium (ISM) has been proven to be an effective way to measure the central wavelengths of these atomic transitions. In this work, we analyze 36 Chandra High Energy Transmission Grating observations to search for and measure the ISM absorption lines along sight lines to 11 low-mass X-ray binaries. We correct the Galactic rotation velocity to the rest frame for every observation and then use two different methods to merge all the corrected spectra to a co-added spectrum. However, the co-added spectra obtained by this method exhibit biases, toward to either observations with high counts or lines with high signal-to-noise ratios. We do a Bayesian analysis of several significantly detected lines to obtain the systematic uncertainty and the bias correction for other lines. Compared to previous studies, our results improve the wavelength accuracy by a factor of two to five and significantly reduce the systematic uncertainties and biases. Several weak transitions (e.g., 1s-2p of Mg IV and Mg V; 1s-3p of Mg III and Mg V) are also detected for the first time, albeit with low significance; future observations with improved accuracy are required to confirm these detections.

Liao Jinyuan; Zhang Shuangnan [Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China); Yao Yangsen, E-mail: zhangsn@ihep.ac.cn [Eureka Scientific, 2452 Delmer Street Suite 100, Oakland, CA 94602 (United States)

2013-09-10T23:59:59.000Z

346

presentation_anl-SHORT-aug09  

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

magnetic moments of ps states of nuclei far magnetic moments of ps states of nuclei far from stability Argonne Workshop: Aug. 8-9,2009 Noémie Benczer-Koller Rutgers University I will not talk about everything, namely: Intermediate Coulomb excitation experiments at MSU with the TF technique Recoil in vacuum (RIV) at ORNL, ANL β-NMR, etc... These require more instrumentation than the experiments I would like to start with, as well as complex calibrations although they are a good option for future experiments. ************************************************************ I will mention possible Transient Field (TF) measurements with CARIBU beams. Measurements of magnetic moments of ps states with radioactive beams 2 Motivation : Microscopic structure of individual low-lying states in nuclei far from stability, with TF techniques and Coulomb

347

Resonant third-harmonic generation of a short-pulse laser from electron-hole plasmas  

SciTech Connect (OSTI)

In semiconductors, free carriers are created in pairs in inter-band transitions and consist of an electron and its corresponding hole. At very high carrier densities, carrier-carrier collisions dominate over carrier-lattice collisions and carriers begin to behave collectively to form plasma. Here, we apply a short-pulse laser to generate third-harmonic radiation from a semiconductor plasma (electron-hole plasma) in the presence of a transverse wiggler magnetic-field. The process of third-harmonic generation of an intense short-pulse laser is resonantly enhanced by the magnetic wiggler, i.e., wiggler magnetic field provides the necessary momentum to third-harmonic photons. In addition, a high-power laser radiation, propagating through a semiconductor imparts an oscillatory velocity to the electrons and exerts a ponderomotive force on electrons at the third-harmonic frequency of the laser. This oscillatory velocity produces a third-harmonic longitudinal current. And due to the beating of the longitudinal electron velocity and the wiggler magnetic field, a transverse third-harmonic current is produced that drives third-harmonic electromagnetic radiation. It is finally observed that for a specific wiggler wave number value, the phase-matching conditions for the process are satisfied, leading to resonant enhancement in the energy conversion efficiency.

Kant, Niti [Department of Physics, Lovely Professional University, Phagwara, Punjab 144 402 (India); Nandan Gupta, Devki [Department of Physics and Astrophysics, University of Delhi, Delhi 110 007 (India); Suk, Hyyong [Advanced Photonics Research Institute (APRI) and Graduate Program of Photonics and Applied Physics, Gwangju Institute of Science and Technology, Gwangju 500 712 (Korea, Republic of)

2012-01-15T23:59:59.000Z

348

Long-period fiber grating as wavelength selective element in double-clad Yb-doped fiber-ring lasers  

E-Print Network [OSTI]

Selection of operating wavelength of the Yb-doped fiber-ring lasers using longperiod fiber gratings (LPFGs) is suggested. In the proposed method, customized LPFG that sustains high powers serves as a broad-band rejection filter. It modifies the net gain profile of the laser, enabling the peak gain to occur at a designed wavelength. Spectral range of oscillation between 1050-1110 nm was experimentally demonstrated. This range can be extended to both shorter and longer wavelengths with proper design of the LPFG and length of the Yb-doped fiber. The gratings were inscribed by CO2 laser and the grating period down to 175 ?m was achieved being, to our best knowledge, the shortest reported LPFG period using this technique.

Peterka, P; Dussardier, Bernard; Slavik, R; Honzatko, P; Kubecek, V

2009-01-01T23:59:59.000Z

349

The Millisecond Magnetar Central Engine in short GRBs  

E-Print Network [OSTI]

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

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

2015-01-01T23:59:59.000Z

350

Short Range Correlations in Nuclei at Large xbj through Inclusive Quasi-Elastic Electron Scattering  

SciTech Connect (OSTI)

The experiment, E08-014, in Hall-A at Jefferson Lab aims to study the short-range correlations (SRC) which are necessary to explain the nuclear strength absent in the mean field theory. The cross sections for 2H, 3He, 4He, 12C, 40Ca and 48Ca, were measured via inclusive quasi-elastic electron scattering from these nuclei in a Q2 range between 0.8 and 2.8 (GeV/c)^2 for x>1. The cross section ratios of heavy nuclei to 2H were extracted to study two-nucleon SRC for 1

Ye, Zhihong [UVA

2013-12-01T23:59:59.000Z

351

DOE/EIA-0202(85/2Q) Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

2Q) 2Q) Short-Term Energy Outlook amm Quarterly Projections April 1985 Published: May 1985 Energy Information Administration Washington, D C t rt jrt .ort lort .iort iort iort lort '.ort ort .erm -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term -Term xrm nergy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term

352

Nanoscale Imaging with Resonant Coherent X Rays: Extension of Multiple-Wavelength Anomalous Diffraction to Nonperiodic Structures  

Science Journals Connector (OSTI)

The methodology of multiple-wavelength anomalous diffraction, widely used for macromolecular structure determination, is extended to the imaging of nonperiodic nanostructures. We demonstrate the solution of the phase problem by a combination of two resonantly recorded coherent scattering patterns at the carbon K edge (285 eV). Our approach merges iterative phase retrieval and x-ray holography approaches, yielding unique and rapid reconstructions. The element, chemical, and magnetic state specificity of our method further renders it widely applicable to a broad range of nanostructures, providing a spatial resolution that is limited, in principle, by wavelength only.

A. Scherz; D. Zhu; R. Rick; W. F. Schlotter; S. Roy; J. Lüning; J. Stöhr

2008-08-13T23:59:59.000Z

353

Energy Information Administration/Short-Term Energy Outlook - August 2005  

Gasoline and Diesel Fuel Update (EIA)

5 5 1 Short-Term Energy Outlook August 2005 Short-Term Energy Outlook - Regional Enhancements Starting with this edition of the Short-Term Energy Outlook (STEO), EIA is introducing regional projections (the scope of which will vary by fuel) of energy prices, consumption, and production. The addition of regional data and forecasts will allow us to examine regional fuel demands and prices, regional fuel inventory trends, the interaction between regional electricity demand shifts, and regional electric generating capacity. This edition of STEO includes regional projections for heating oil, propane, and gasoline prices and natural gas and electricity demand and prices. Over the next 2 months, we will include additional regional

354

INTERPLANETARY NETWORK LOCALIZATIONS OF KONUS SHORT GAMMA-RAY BURSTS  

SciTech Connect (OSTI)

Between the launch of the Global Geospace Science Wind spacecraft in 1994 November and the end of 2010, the Konus-Wind experiment detected 296 short-duration gamma-ray bursts (including 23 bursts which can be classified as short bursts with extended emission). During this period, the Interplanetary Network (IPN) consisted of up to 11 spacecraft, and using triangulation, the localizations of 271 bursts were obtained. We present the most comprehensive IPN localization data on these events. The short burst detection rate, {approx}18 yr{sup -1}, exceeds that of many individual experiments.

Pal'shin, V. D.; Svinkin, D. S.; Aptekar, R. L.; Golenetskii, S. V.; Frederiks, D. D.; Mazets, E. P.; Oleynik, P. P.; Ulanov, M. V. [Ioffe Physical Technical Institute, St. Petersburg, 194021 (Russian Federation); Hurley, K. [Space Sciences Laboratory, University of California, 7 Gauss Way, Berkeley, CA 94720-7450 (United States); Cline, T.; Trombka, J.; McClanahan, T. [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Mitrofanov, I. G.; Golovin, D. V.; Kozyrev, A. S.; Litvak, M. L.; Sanin, A. B. [Space Research Institute, 84/32, Profsoyuznaya, Moscow 117997 (Russian Federation); Boynton, W.; Fellows, C.; Harshman, K., E-mail: val@mail.ioffe.ru [Department of Planetary Sciences, University of Arizona, Tucson, AZ 85721 (United States); and others

2013-08-15T23:59:59.000Z

355

Junction Temperature Measurement of IGBTs Using Short Circuit Current  

SciTech Connect (OSTI)

In this paper, a method is proposed to measure the junction temperatures of IGBT discrete devices and modules using short circuit current. Experimental results show that the short circuit current has good sensitivity, linearity and selectivity, which is suitable to be used as temperature sensitive electrical parameters (TSEP). Test circuit and hardware design are proposed for junction temperature measurement in single phase and three phase convertes. By connecting a temperature measurement unit to the converter and giving a short circuit pulse, the IGBT junction temperature can be measured.

Wang, Fei [ORNL; Xu, Zhuxian [ORNL; Ning, Puqi [ORNL

2012-01-01T23:59:59.000Z

356

Spectral Properties of Short Gamma-Ray Bursts  

E-Print Network [OSTI]

The distribution of GRB durations is bimodal, but there is little additional evidence to support the division of GRBs into short and long classes. Based on simple hardness ratios, several studies have shown a tendency for longer GRBs to have softer energy spectra. Using a database of standard model fits to BATSE GRBs, we compare the distributions of spectral parameters for short and long bursts. Our preliminary results show that the average spectral break energy differs discontinuously between short and long burst classes, but within each class shows only a weak dependence on burst duration.

Paciesas, W S; Mallozzi, R S; Preece, R D

2003-01-01T23:59:59.000Z

357

MULTI-WAVELENGTH VIEW OF KILOPARSEC-SCALE CLUMPS IN STAR-FORMING GALAXIES AT z {approx} 2  

SciTech Connect (OSTI)

This paper studies the properties of kiloparsec-scale clumps in star-forming galaxies at z {approx} 2 through multi-wavelength broadband photometry. A sample of 40 clumps is identified from Hubble Space Telescope (HST)/Advanced Camera for Surveys (ACS) z-band images through auto-detection and visual inspection from 10 galaxies with 1.5 < z < 2.5 in the Hubble Ultra Deep Field, where deep and high-resolution HST/WFC3 and ACS images enable us to resolve structures of z {approx} 2 galaxies down to the kiloparsec scale in the rest-frame UV and optical bands and to detect clumps toward the faint end. The physical properties of clumps are measured through fitting spatially resolved seven-band (BVizYJH) spectral energy distribution to models. On average, the clumps are blue and have similar median rest-frame UV-optical color as the diffuse components of their host galaxies, but the clumps have large scatter in their colors. Although the star formation rate (SFR)-stellar mass relation of galaxies is dominated by the diffuse components, clumps emerge as regions with enhanced specific star formation rates, contributing individually {approx}10% and together {approx}50% of the SFR of the host galaxies. However, the contributions of clumps to the rest-frame UV/optical luminosity and stellar mass are smaller, typically a few percent individually and {approx}20% together. On average, clumps are younger by 0.2 dex and denser by a factor of eight than diffuse components. Clump properties have obvious radial variations in the sense that central clumps are redder, older, more extincted, denser, and less active on forming stars than outskirt clumps. Our results are broadly consistent with a widely held view that clumps are formed through gravitational instability in gas-rich turbulent disks and would eventually migrate toward galactic centers and coalesce into bulges. Roughly 40% of the galaxies in our sample contain a massive clump that could be identified as a proto-bulge, which seems qualitatively consistent with such a bulge-formation scenario.

Guo Yicheng; Giavalisco, Mauro; Cassata, Paolo [Astronomy Department, University of Massachusetts, 710 N. Pleasant St., Amherst, MA 01003 (United States); Ferguson, Henry C.; Koekemoer, Anton M., E-mail: yicheng@astro.umass.edu [Space Telescope Science Institute, 3700 San Martin Dr., Baltimore, MD 21218 (United States)

2012-10-01T23:59:59.000Z

358

Acceleration-field calculation for a structure-based laser-driven linear accelerator  

E-Print Network [OSTI]

Acceleration-field calculation for a structure-based laser-driven linear accelerator Y. C. Huanga for publication 16 April 1998 A laser-driven particle accelerator, scaled to optical wavelengths, has a feature size many orders of magnitude smaller than a radio-frequency accelerator. However, similar to a radio

Byer, Robert L.

359

Magnetic Field Safety Training  

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

Safety Training Magnetic Field Safety Strong Magnetic Fields exist around energized magnets. High magnetic fields alone are a recognized hazard only for personnel with certain...

360

DSM savings verification through short-term pre-and-post energy monitoring at 90 facilities  

SciTech Connect (OSTI)

This paper summarizes the DSM impact results obtained from short-term energy measurements performed at sites monitored as part of the Commercial, Industrial and Agricultural (CIA) Retrofit Incentives Evaluation Program sponsored by the Pacific Gas & Electric Company. The DSM measures include those typically found in these sectors; i.e., lighting, motors, irrigation pumps and HVAC modifications. The most important findings from the site measurements are the estimated annual energy and demand savings. Although there may be large differences of projected energy savings for individual sites, when viewed in the aggregate the total energy savings for the program were found to be fairly comparable to engineering estimates. This paper describes the lessons learned from attempting in-situ impact evaluations of DSM savings under both direct and custom rebate approaches. Impact parameters of interest include savings under both direct and custom rebate approaches. Impact parameters of interest include gross first-year savings and load shape impacts. The major method discussed in this paper is short-term before/after field monitoring of affected end-uses; however, the complete impact evaluation method also includes a billing analysis component and a hybrid statistical/engineering model component which relies, in part, on the short-term end-use data.

Misuriello, H.

1994-12-31T23:59:59.000Z

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


361

Breakdown of the Dipole Approximation in Strong-Field Ionization  

E-Print Network [OSTI]

We report the breakdown of the electric dipole approximation in the long-wavelength limit in strong-field ionization with linearly polarized few-cycle mid-infrared laser pulses at intensities on the order of 10$^{13}$ W/cm$^2$. Photoelectron momentum distributions were recorded by velocity map imaging and projected onto the beam propagation axis. We observe an increasing shift of the peak of this projection opposite to the beam propagation direction with increasing laser intensities. From a comparison with semi-classical simulations, we identify the combined action of the magnetic field of the laser pulse and the Coulomb potential as origin of our observations.

Ludwig, A; Mayer, B W; Phillips, C R; Gallmann, L; Keller, U

2014-01-01T23:59:59.000Z

362

Breakdown of the Dipole Approximation in Strong-Field Ionization  

E-Print Network [OSTI]

We report the breakdown of the electric dipole approximation in the long-wavelength limit in strong-field ionization with linearly polarized few-cycle mid-infrared laser pulses at intensities on the order of 10$^{13}$ W/cm$^2$. Photoelectron momentum distributions were recorded by velocity map imaging and projected onto the beam propagation axis. We observe an increasing shift of the peak of this projection opposite to the beam propagation direction with increasing laser intensities. From a comparison with semi-classical simulations, we identify the combined action of the magnetic field of the laser pulse and the Coulomb potential as origin of our observations.

A. Ludwig; J. Maurer; B. W. Mayer; C. R. Phillips; L. Gallmann; U. Keller

2014-08-11T23:59:59.000Z

363

Apparatus comprising a tunable nanomechanical near-field grating and method for controlling far-field emission  

DOE Patents [OSTI]

A tunable nanomechanical near-field grating is disclosed which is capable of varying the intensity of a diffraction mode of an optical output signal. The tunable nanomechanical near-field grating includes two sub-gratings each having line-elements with width and thickness less than the operating wavelength of light with which the grating interacts. Lateral apertures in the two sub-gratings are formed from the space between one line-element of the first sub-grating and at least one line-element of the second sub-grating. One of the sub-gratings is capable of motion such that at least one of aperture width and aperture depth changes, causing a perturbation to the near-field intensity distribution of the tunable nanomechanical near-field grating and a corresponding change to the far-field emission of thereof.

Carr, Dustin Wade (Albuquerque, NM); Bogart, Gregory Robert (Corrales, NM)

2007-02-06T23:59:59.000Z

364

INTERPLANETARY NETWORK LOCALIZATIONS OF KONUS SHORT GAMMA-RAY BURSTS  

E-Print Network [OSTI]

Between the launch of the Global Geospace Science Wind spacecraft in 1994 November and the end of 2010, the Konus-Wind experiment detected 296 short-duration gamma-ray bursts (including 23 bursts which can be classified ...

Vanderspek, Roland K.

365

U.S. gasoline price falls under $3 (short version)  

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

3, 2014 U.S. gasoline price falls under 3 (short version) The U.S. average retail price for regular gasoline fell to its lowest level since December 2010 at 2.99 a gallon on...

366

273KELLY: TREE WETA MOVEMENT PATTERNS SHORT COMMUNICATION  

E-Print Network [OSTI]

273KELLY: TREE WETA MOVEMENT PATTERNS SHORT COMMUNICATION Movement patterns and gallery use by the sexually dimorphic Wellington tree weta Clint D. Kelly Department of Biology, University of Toronto University, Canberra, ACT, Australia 0200 (E-mail: clint.kelly

Gwynne, Darryl T.

367

Short-term CO? abatement in the European power sector  

E-Print Network [OSTI]

This paper focuses on the possibilities for short term abatement in response to a CO2 price through fuel switching in the European power sector. The model E-Simulate is used to simulate the electricity generation in Europe ...

Delarue, Erik D.

2008-01-01T23:59:59.000Z

368

Chemical and physical properties of short rotation tree species  

Science Journals Connector (OSTI)

Short rotation forestry (SRF) can be defined as a form of...1999; Weih 2004). SRF has achieved greater awareness, especially in Europe...2009). The directive steers the production of raw materials in a way that c...

Janne Pesonen; Toivo Kuokkanen…

2014-11-01T23:59:59.000Z

369

Industrial Energy Auditing - A Short Course for Engineers  

E-Print Network [OSTI]

This paper describes an intensive five day short course, directed toward engineers currently working in industry, which provides the participants with the rudiments of industrial energy auditing. Experience has shown that this format of training can...

Witte, L. C.

1979-01-01T23:59:59.000Z

370

Prediction of short loops in intrinsically disordered proteins  

Science Journals Connector (OSTI)

A new possibility of predicting short disordered regions (loops) at a small window ... As demonstrated with the example of three G proteins, FoldUnfold predicted almost all existing loops at ... to determine the ...

E. I. Deryusheva; O. V. Galzitskaya; I. N. Serdyuk

2008-12-01T23:59:59.000Z

371

Abstract: Development and Deployment of a Short Rotation Woody...  

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

a Single-Pass Cut-and-Chip Harvest System for Short Rotation Woody Crops 2011 Biomass Program Platform Peer Review: Feedstock Feedstock Supply and Logistics:Biomass as a Commodity...

372

Natural Gas Summary from the Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

spring, averaging 4.89 per MMBtu in March, 4.92 in April, and 4.84 in May (Short-Term Energy Outlook, March 2004). Spot prices averaged 5.90 per MMBtu in January but fell to...

373

Graft polymerization of methyl methacrylate onto short leather fibers  

Science Journals Connector (OSTI)

In this work, the graft polymerization of methyl methacrylate (MMA) monomer onto short leather fibers (SLF) was investigated as a function of the ... grafting efficiency) were determined. Composites formulated wi...

T. J. Madera-Santana; F. Vázquez Moreno

1999-03-01T23:59:59.000Z

374

Inventories and the short-run dynamics of commodity prices  

E-Print Network [OSTI]

I examine the behavior of inventories and their role in the short-run dynamics of commodity production and price. Competitive producers of a storable commodity react to price changes by balancing costs of changing production ...

Pindyck, Robert S.

1990-01-01T23:59:59.000Z

375

Near-Field Magneto-Optical Microscope  

DOE Patents [OSTI]

A device and method for mapping magnetic fields of a sample at a resolution less than the wavelength of light without altering the magnetic field of the sample is disclosed. A device having a tapered end portion with a magneto-optically active particle positioned at the distal end thereof in communication with a fiber optic for transferring incoming linearly polarized light from a source thereof to the particle and for transferring reflected light from the particle is provided. The fiber optic has a reflective material trapping light within the fiber optic and in communication with a light detector for determining the polarization of light reflected from the particle as a function of the strength and direction of the magnetic field of the sample. Linearly polarized light from the source thereof transferred to the particle positioned proximate the sample is affected by the magnetic field of the sample sensed by the particle such that the difference in polarization of light entering and leaving the particle is due to the magnetic field of the sample. Relative movement between the particle and sample enables mapping.

Vlasko-Vlasov, Vitalii; Welp, Ulrich; and Crabtree, George W.

2005-12-06T23:59:59.000Z

376

Near Field Magneto-Optical Microscope  

DOE Patents [OSTI]

A device and method for mapping magnetic fields of a sample at a resolution less than the wavelength of light without altering the magnetic field of the sample is disclosed. A device having a tapered end portion with a magneto-optically active particle positioned at the distal end thereof in communication with a fiber optic for transferring incoming linearly polarized light from a source thereof to the particle and for transferring reflected light from the particle is provided. The fiber optic has a reflective material trapping light within the fiber optic and in communication with a light detector for determining the polarization of light reflected from the particle as a function of the strength and direction of the magnetic field of the sample. Linearly polarized light from the source thereof transferred to the particle positioned proximate the sample is affected by the magnetic field of the sample sensed by the particle such that the difference in polarization of light entering and leaving the particle is due to the magnetic field of the sample. Relative movement between the particle and sample enables mapping.

Vlasko-Vlasov, Vitalii K. (Downers Grove, IL); Welp, Ulrich (Lisle, IL); Crabtree, George W. (Chicago, IL)

2005-12-06T23:59:59.000Z

377

Water/Wastewater Treatment Plant Field Device Wiring Method Decision Analysis  

E-Print Network [OSTI]

The choice of field device wiring method for water and wastewater treatment plant design is extremely complex and contains many variables. The choice not only affects short-term startup and equipment costs, but also long-term operations...

Dicus, Scott C.

2011-12-16T23:59:59.000Z

378

Magnetic Field Safety Magnetic Field Safety  

E-Print Network [OSTI]

Magnetic Field Safety Training #12;Magnetic Field Safety Strong Magnetic Fields exist around energized magnets. High magnetic fields alone are a recognized hazard only for personnel with certain medical conditions such as pacemakers, magnetic implants, or embedded shrapnel. In addition, high magnetic

McQuade, D. Tyler

379

A model for short term electric load forecasting  

E-Print Network [OSTI]

A MODEL FOR SHORT TERM ELECTRIC LOAD FORECASTING A Thesis by JOHN ROBERT TIGUE, III Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE May 1975 Major... Subject: Electrical Engineering A MODEL FOR SHORT TERM ELECTRIC LOAD FORECASTING A Thesis by JOHN ROBERT TIGUE& III Approved as to style and content by: (Chairman of Committee) (Head Depart t) (Member) ;(Me r (Member) (Member) May 1975 ABSTRACT...

Tigue, John Robert

1975-01-01T23:59:59.000Z

380

Infrared near-field imaging and spectroscopy based on thermal or synchrotron radiation  

SciTech Connect (OSTI)

We demonstrate the coupling of a scattering near-field scanning optical microscope combined with a Fourier transform infrared spectrometer. The set-up operates using either the near-field thermal emission from the sample itself, which is proportional to the electromagnetic local density of states, or with an external infrared synchrotron source, which is broadband and highly brilliant. We perform imaging and spectroscopy measurements with sub-wavelength spatial resolution in the mid-infrared range on surfaces made of silicon carbide and gold and demonstrate the capabilities of the two configurations for super-resolved near-field mid-infrared hyperspectral imaging and that the simple use of a properly chosen bandpass filter on the detector allows one to image the spatial distribution of materials with sub-wavelength resolution by studying the contrast in the near-field images.

Peragut, Florian; De Wilde, Yannick, E-mail: yannick.dewilde@espci.fr [ESPCI ParisTech, PSL Research University, CNRS, Institut Langevin, 1 rue Jussieu, F-75005, Paris (France); Brubach, Jean-Blaise; Roy, Pascale [Société Civile Synchrotron SOLEIL, L'Orme des Merisiers, St-Aubin BP48, 91192 Gif-sur-Yvette Cedex (France)

2014-06-23T23:59:59.000Z

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


381

Very-high-energy blazars: updates from VERITAS observations and multi-wavelength campaigns  

E-Print Network [OSTI]

VERITAS is an array of four 12-m atmospheric Cherenkov telescopes, designed to observe the very-high-energy (VHE; E $\\geq$100 GeV) sky. Since 2007, it has detected more than 20 extra-galactic sources, the majority of which are active-galactic-nuclei of the blazar class. In this paper we present a selection of the most recent results from the VERITAS blazar observing program, in particular in the context of broad-band multi-wavelength campaigns. Four results are highlighted: the detection of the flat-spectrum-radio-quasar PKS 1222+216 (4C +21.35) during March 2014; the $\\gamma$-ray flare from the BL Lac object 1ES 1727+502, observed under bright-moonlight conditions during May 2013; the bright $\\gamma$-ray flare from the BL Lac object 1ES 1011+496 during February 2014; and the long-term campaign on the BL Lac object PKS 1424+240, currently the farthest (z > 0.60), persistent VHE emitter

Cerruti, Matteo

2015-01-01T23:59:59.000Z

382

Multi-Wavelength Observations of Comet C/2011 L4 (Pan-Starrs)  

E-Print Network [OSTI]

Dynamically new comet C/2011 L4 (PanSTARRS) is one of the brightest comets since the great comet C/1995 O1 (Hale-Bopp). Here, we present our multi-wavelength observations of C/2011 L4 during its in-bound passage to the inner Solar system. A strong absorption band of water ice at 2.0 $\\mu$m was detected in the near infrared spectra, taken with the 8-m Gemini-North and 3-m IRTF telescopes. The companion 1.5 $\\mu$m band of water ice, however, was not observed. Spectral modeling show that the absence of the 1.5 $\\mu$m feature can be explained by the presence of sub-micron-sized fine ice grains. No gas lines (i.e. CN, HCN or CO) were observed pre-perihelion either in the optical or in the sub-millimeter. 3-$\\sigma$ upper limits to the CN and CO production rates were derived. The comet exhibited a very strong continuum in the optical and its slope seemed to become redder as the comet approached the Sun. Our observations suggest that C/2011 L4 is an unusually dust-rich comet with a dust-to-gas mass ratio $>$ 4.

Yang, B; Meech, K; Owen, T; Wainscoat, R

2014-01-01T23:59:59.000Z

383

Elimination of ghosting artifacts from wavelength-shifting fiber neutron detectors  

SciTech Connect (OSTI)

Misassignment of neutron position (ghosting) produces artifacts which have been observed in wavelength-shifting (WLS) fiber detectors developed for time-of-flight (TOF) neutron powder diffraction. In position-sensitive detectors (PSDs) with WLS fiber encoding, thermal and cold neutrons interact with a monolithic {sup 6}LiF/ZnS:Ag scintillator screen, and scintillation photons are generated and transported through the crossed fibers to photomultipliers (PMTs). The neutron position is determined by photon counts in the PMTs within a preset time window. Ghosting occurs when neutrons hit the group boundaries of two neighboring PMTs for x-position multiplexing, which is modeled as resulting from a long travel length (about 3-5 mm) of a small number of scintillation photons. This model is supported by the change observed in aperture images when the threshold number for photon-pulses was adjusted for neutron event determination. When the threshold number of photon-pulses was set above 10 for each PMT, the ghost peaks in the aperture images and TOF spectra of powder diffraction were strongly suppressed or completely eliminated, and the intrinsic background levels of the WLS detectors were significantly reduced. Our result indicates that WLS fiber detector is a promising alternative for {sup 3}He PSDs for neutron scattering.

Wang, C. L.; Diawara, Y.; Hannan, B. W.; Hodges, J. P. [Instrument and Source Design Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Clonts, L. G. [Research Accelerator Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

2013-01-15T23:59:59.000Z

384

Uniformity measurements and new positioning algorithms for wavelength-shifting fiber neutron detectors  

SciTech Connect (OSTI)

Wavelength-shifting (WLS) fiber scintillator detectors were successfully installed at two neutron powder diffractometers at the Spallation Neutron Source (SNS). However, they have the following second-order disadvantages: i). they cannot have both high efficiency and images free of ghosting (position misassignment) concomitantly; ii). the apparent detection efficiency and spatial resolution are not uniform. These issues are related to the diffusion of scintillation photons and the fluctuation in the number of photons (quantum noise) collected by photo-multiplier tubes (PMTs). To mitigate these two issues, we developed two statistics-based positioning algorithms, i.e., a centroid algorithm (CEA) and a correlation algorithm (CA). Compared with the generally used maximum-photon algorithm (MPA), CEA eliminates the ghosting with only about a 10% loss in detection efficiency, and provides better uniformity in detection efficiency and intrinsic background. CA can effectively eliminate ghosting too, but the loss of efficiency at the group boundaries of PMTs is large. The results indicate that both algorithms can reduce the influence of quantum noise on the neutron positioning.

Wang, Cai-Lin [ORNL] [ORNL; Riedel, Richard A [ORNL] [ORNL

2014-01-01T23:59:59.000Z

385

A multi-wavelength view on the dusty Wolf-Rayet star WR 48a  

E-Print Network [OSTI]

We present results from the first attempts to derive various physical characteristics of the dusty Wolf-Rayet star WR 48a based on a multi-wavelength view of its observational properties. This is done on the basis of new optical and near-infrared spectral observations and on data from various archives in the optical, radio and X-rays. The optical spectrum of WR 48a is acceptably well represented by a sum of two spectra: of a WR star of the WC8 type and of a WR star of the WN8h type. The strength of the interstellar absorption features in the optical spectra of WR 48a and the near-by stars D2-3 and D2-7 (both members of the open cluster Danks 2) indicates that WR 48a is located at a distance of ~4 kpc from us. WR 48a is very likely a thermal radio source and for such a case and smooth (no clumps) wind its radio emission suggests a relatively high mass-loss rate of this dusty WR star (dM/dt = a few x 10^(-4) solar masses per year). Long timescale (years) variability of WR 48a is established in the optical, radi...

Zhekov, Svetozar A; Gawronski, Marcin P; Georgiev, Leonid N; Borissova, Jura; Kurtev, Radostin; Gagne, Marc; Hajduk, Marcin

2014-01-01T23:59:59.000Z

386

Spectral irradiance model for tungsten halogen lamps in 340-850 nm wavelength range  

SciTech Connect (OSTI)

We have developed a physical model for the spectral irradiance of 1 kW tungsten halogen incandescent lamps for the wavelength range 340-850 nm. The model consists of the Planck's radiation law, published values for the emissivity of tungsten, and a residual spectral correction function taking into account unknown factors of the lamp. The correction function was determined by measuring the spectra of a 1000 W, quartz-halogen, tungsten coiled filament (FEL) lamp at different temperatures. The new model was tested with lamps of types FEL and 1000 W, 120 V quartz halogen (DXW). Comparisons with measurements of two national standards laboratories indicate that the model can account for the spectral irradiance values of lamps with an agreement better than 1% throughout the spectral region studied. We further demonstrate that the spectral irradiance of a lamp can be predicted with an expanded uncertainty of 2.6% if the color temperature and illuminance values for the lamp are known with expanded uncertainties of 20 K and 2%, respectively. In addition, it is suggested that the spectral irradiance may be derived from resistance measurements of the filament with lamp on and off.

Ojanen, Maija; Kaerhae, Petri; Ikonen, Erkki

2010-02-10T23:59:59.000Z

387

At-wavelength characterization of the extreme ultraviolet Engineering Test Stand Set-2 optic  

E-Print Network [OSTI]

and alignment of numerous small-field EUV 10 -reduction Schwarzschild objectives.11 Indepen- dent verification the ETS Set-2 optic has been fabri- cated and assembled. The projection optics are four-mirror, aspheric

Bokor, Jeffrey

388

Modeling of photolysis and hydroxyl radical reactions of 1,1,1-trichloroethane using multi-wavelength UV sources  

SciTech Connect (OSTI)

A process for the photolysis of hydrogen peroxide (UV/H{sub 2}O{sub 2}) is being used for the oxidation of organic chemicals in contaminated groundwater, surface water, and wastewaters. Models of the UV/H{sub 2}O{sub 2} process are available, although restricted to a single wavelength (usually 254 nm) UV source. In practice, lamps used in many environmental applications are high output multi-wavelength lamps, often medium pressure mercury vapor lamps. In this work, a model was developed for solving simultaneous multi-wavelength photolysis and radical reactions of the UV/H{sub 2}O{sub 2} system with a single substrate (1,1,1-trichloroethane) and its by-products. Micromath Scientist, a data handling software package, was used as a platform to build the computer model. The program integrates changing photolysis rates of the major light absorbing species as their relative concentrations change into a system for solving simultaneous ordinary differential equations (ODEs). Thus, the photolysis rates were dynamically linked to the mechanism solver. Experimental data are compared to model simulations, and cost comparisons for single and multi-wavelength treatments are computed.

Loraine, G.A.; Glaze, W.H. [Univ. of North Carolina, Chapel Hill, NC (United States)

1995-12-31T23:59:59.000Z

389

Excitation wavelength dependence of water-window line emissions from boron-nitride laser-produced plasmas  

E-Print Network [OSTI]

transmission x-ray micro- scopes (STXM) have achieved high resolution ($30 nm) using zone plate condensers to their compact size, high brightness, and high conversion efficiency. The properties of EUV and SXR emission from for cellular microscopy. At these wavelengths transmission through water is relatively high compared to carbon

Harilal, S. S.

390

THE 1995-2002 LONG-TERM MONITORING OF COMET C/1995 O1 (HALE-BOPP) AT RADIO WAVELENGTHS  

E-Print Network [OSTI]

THE 1995-2002 LONG-TERM MONITORING OF COMET C/1995 O1 (HALE-BOPP) AT RADIO WAVELENGTHS Nicolas Berlin-Adlershof, Germany Abstract. The bright comet Hale-Bopp provided the #12;rst opportunity to follow at heliocentric distances larger than 3{4 AU, was last detected in August 2001, at rh = 14 AU. The gas production

Demoulin, Pascal

391

Carbon dioxide on the satellites of Saturn: Results from the Cassini VIMS investigation and revisions to the VIMS wavelength scale  

E-Print Network [OSTI]

Carbon dioxide on the satellites of Saturn: Results from the Cassini VIMS investigation and revisions to the VIMS wavelength scale Dale P. Cruikshank a,*, Allan W. Meyer b , Robert H. Brown c , Roger (2343.3 cmĂ?1 ), discovered with the Visible-Infrared Mapping Spectrometer (VIMS) on the Cassini space

392

Long-period fiber grating as wavelength selective element in double-clad Yb-doped fiber-ring lasers  

E-Print Network [OSTI]

Long-period fiber grating as wavelength selective element in double-clad Yb-doped fiber-ring lasers, 42.79.Dj, 42.81.-i 1. Introduction Cladding-pumped ytterbium-doped fiber lasers belong presently fiber laser with the cladding-pumped YDF a significant increase of the average output power can

Paris-Sud XI, Université de

393

Effects of excitation laser wavelength on Ly-a and He-a line emission from nitrogen plasmas  

E-Print Network [OSTI]

are soft x-ray lasers,6,7 laser-produced plasma (LPP) sources,8­11 and higher har- monics from laser heatedEffects of excitation laser wavelength on Ly-a and He-a line emission from nitrogen plasmas S. S November 2012; accepted 27 December 2012; published online 11 January 2013) Laser-produced nitrogen plasmas

Harilal, S. S.

394

The Long Wavelength Array (LWA): A Large HF/VHF Array for Solar Physics, Ionospheric Science, and Solar Radar  

E-Print Network [OSTI]

The Long Wavelength Array (LWA): A Large HF/VHF Array for Solar Physics, Ionospheric Science, and Solar Radar Namir E. Kassim Naval Research Laboratory, Washington, DC 20375 Stephen M. White AFRL will be a powerful tool for solar physics and space weather investigations, through its ability to characterize

Ellingson, Steven W.

395

Coexisting rogue waves within the (2+1)-component long-wave–short-wave resonance  

Science Journals Connector (OSTI)

The coexistence of two different types of fundamental rogue waves is unveiled, based on the coupled equations describing the (2+1)-component long-wave–short-wave resonance. For a wide range of asymptotic background fields, each family of three rogue wave components can be triggered by using a slight deterministic alteration to the otherwise identical background field. The ability to trigger markedly different rogue wave profiles from similar initial conditions is confirmed by numerical simulations. This remarkable feature, which is absent in the scalar nonlinear Schrödinger equation, is attributed to the specific three-wave interaction process and may be universal for a variety of multicomponent wave dynamics spanning from oceanography to nonlinear optics.

Shihua Chen; Jose M. Soto-Crespo; Philippe Grelu

2014-09-15T23:59:59.000Z

396

Proposal and experimental verification of Bragg wavelength distribution measurement within a long-length FBG by synthesis of optical coherence function  

Science Journals Connector (OSTI)

In this paper, a sensor system for measuring continuous Bragg wavelength distribution in a long-length fiber Bragg grating is newly proposed, using synthesis of optical coherence...

Hotate, Kazuo; Kajiwara, Koji

2008-01-01T23:59:59.000Z

397

Study of short duration heat treatments of an in situ copper-sheathed  

Science Journals Connector (OSTI)

The powder-in-tube technique has been used to fabricate Cu-sheathed magnesium diboride (MgB2) wires using an in situ reaction method. The effects of high heating rate, short duration heat treatments of MgB2/Cu wires were studied by means of optical and scanning electron microscopy, x-ray diffraction, resistivity, ?(T), and susceptibility, ?'(T), measurements. The transport critical currents, Ic(B), of the wires were measured using both direct current in a constant field and pulse field–pulse current methods. Usage of high heating rates allows the processes of interest to occur in conditions closer to isothermal, which permits the influences of heat treatment time and temperature to be more readily distinguished. The results show that the microstructure and properties of the MgB2/Cu wires are strongly dependent on the heat treatment temperature but quite insensitive to the reaction time: a short heat treatment for 5 min at 700?°C was sufficient for obtaining the highest critical current achieved in this work.

M Wo?niak; S C Hopkins; B A Glowacki

2010-01-01T23:59:59.000Z

398

Separation of magnetic field lines  

SciTech Connect (OSTI)

The field lines of magnetic fields that depend on three spatial coordinates are shown to have a fundamentally different behavior from those that depend on two coordinates. Unlike two-coordinate cases, a flux tube in a magnetic field that depends on all three spatial coordinates that has a circular cross section at one location along the tube characteristically has a highly distorted cross section at other locations. In an ideal evolution of a magnetic field, the current densities typically increase. Crudely stated, if the current densities increase by a factor {sigma}, the ratio of the long to the short distance across a cross section of a flux tube characteristically increases by e{sup 2{sigma}}, and the ratio of the longer distance to the initial radius increases as e{sup {sigma}}. Electron inertia prevents a plasma from isolating two magnetic field structures on a distance scale shorter than c/{omega}{sub pe}, which is about 10 cm in the solar corona, and reconnection must be triggered if {sigma} becomes sufficiently large. The radius of the sun, R{sub Circled-Dot-Operator }=7 Multiplication-Sign 10{sup 10}cm is about e{sup 23} times larger, so when {sigma} Greater-Than-Or-Equivalent-To 23, two lines separated by c/{omega}{sub pe} at one location can be separated by the full scale of any magnetic structures in the corona at another. The conditions for achieving a large exponentiation, {sigma}, are derived, and the importance of exponentiation is discussed.

Boozer, Allen H. [Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027 (United States)

2012-11-15T23:59:59.000Z

399

ARM - Propose a Field Campaign  

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

govCampaignsPropose a Campaign govCampaignsPropose a Campaign Schedule and Availability Preproposals now open for AMF and AAF Preproposals due 1 Feb Invited full proposals due 1 May AAF available Dec 2015 AMF1 available Apr 2016 AMF2 available early 2017 AMF3 available for guest instrumentation or intensive operational periods Forms Propose a Campaign Form Instrument Support Request (ISR) Form (Word, 89KB) Documentation Steps to Send Campaign Data to ARM Data Archive Field Campaign Guidelines (PDF, 1.1MB) Propose a Campaign : Preproposal Form Preproposals are short summaries of the proposed campaign and can originate with any scientist. Before you begin your preproposal, you should review the guidelines for submitting proposals. If you are preparing your preproposals locally on your computer, please

400

DOE/EIA-0202(87/4Q) Energy Information Administration Short-Term  

Gasoline and Diesel Fuel Update (EIA)

4Q) 4Q) Energy Information Administration Short-Term Energy Outlook Quarterly Projections October 1987 i- rt- jrt ort lort lort lort- iort- lort- ort- ort Tt- " t- . m erm Perm -Term -Term -Term -Term ,-Term -Term -Term -Term -Term -Term -Term -Term -Term -Term 71 e rrn TT1 "1 Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy Energy "nergy -cry Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook Outlook ""'tlook Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term Short-Term

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


401

A loss-based, magnetic field sensor implemented in a ferrofluid infiltrated microstructured polymer optical fiber  

SciTech Connect (OSTI)

We report an in-fiber magnetic field sensor based on magneto-driven optical loss effects, while being implemented in a ferrofluid infiltrated microstructured polymer optical fiber. We demonstrate that magnetic field flux changes up to 2000 gauss can be detected when the magnetic field is applied perpendicular to the fiber axis. In addition, the sensor exhibits high polarization sensitivity for the interrogated wavelengths, providing the possibility of both field flux and direction measurements. The underlying physical and guidance mechanisms of this sensing transduction are further investigated using spectrophotometric, light scattering measurements, and numerical simulations, suggesting photonic Hall effect as the dominant physical, transducing mechanism.

Candiani, A. [Foundation for Research and Technology-Hellas (FORTH), Institute of Electronic Structure and Laser (IESL), Heraklion 70013 Greece (Greece); Department of Information Engineering (DII), University of Parma, Parma 43124 (Italy); Argyros, A.; Leon-Saval, S. G.; Lwin, R. [Institute of Photonics and Optical Science (IPOS), School of Physics, The University of Sydney, Sydney (Australia); Selleri, S. [Department of Information Engineering (DII), University of Parma, Parma 43124 (Italy); Pissadakis, S., E-mail: pissas@iesl.forth.gr [Foundation for Research and Technology-Hellas (FORTH), Institute of Electronic Structure and Laser (IESL), Heraklion 70013 Greece (Greece)

2014-03-17T23:59:59.000Z

402

Monochromatic wavelength dispersive x-ray fluorescence providing sensitive and selective detection of uranium  

SciTech Connect (OSTI)

Monochromatic wavelength dispersive X-ray fluorescence (MWDXRF) is a sensitive and selective method for elemental compositional analyses. The basis for this instrumental advance is the doubly curved crystal (DCC) optic. Previous work has demonstrated the feasibility of sensitive trace element detection for yttrium as a surrogate for curium in aqueous solutions. Additional measurements have demonstrated similar sensitivity in several different matrix environments which attests to the selectivity of the DCC optic as well as the capabilities of the MWDXRF concept. The objective of this effort is to develop an improved Pu characterization method for nuclear fuel reprocessing plants. The MWDXRF prototype instrument is the second step in a multi-year effort to achieve an improved Pu assay. This work will describe a prototype MWDXRF instrument designed for uranium detection and characterization. The prototype consists of an X-ray tube with a rhodium anode and a DCC excitation optic incorporated into the source. The DCC optic passes the RhK{alpha} line at 20.214 keV for monochromatic excitation of the sample. The source is capable of 50 W power at 50 kV and 1.0 mA operation. The x-ray emission from the sample is collected by a DCC optic set at the UL{alpha} line of 13.613 keV. The collection optic transmits the UL{alpha} x-rays to the silicon drift detector. The x-ray source, sample, collection optic and detector are all mounted on motion controlled stages for the critical alignment of these components. The sensitivity and selectivity of the instrument is obtained through the monochromatic excitation and the monochromatic detection. The prototype instrument performance has a demonstrated for sensitivity for uranium detection of around 2 ppm at the current state of development. Further improvement in sensitivity is expected with more detailed alignment.

Havrilla, George J [Los Alamos National Laboratory; Collins, Michael L [Los Alamos National Laboratory; Montoya, Velma M [Los Alamos National Laboratory; Chen, Zewu [XOS; Wei, Fuzhong [XOS

2010-01-01T23:59:59.000Z

403

EUV Interferometry of a Four-Mirror Ring-Field EUV Optical System Kenneth A. Goldberg*a, Patrick Naulleaua, Phillip J. Batsona, Paul Denhama,  

E-Print Network [OSTI]

EUV Interferometry of a Four-Mirror Ring-Field EUV Optical System Kenneth A. Goldberg*a, Patrick At-wavelength, extreme ultraviolet interferometric measurements of a new, four-mirror, ring of several small-field EUV 10Ă? Schwarzschild objec- tives.5 A new branchline of the undulator source

Bokor, Jeffrey

404

Natural Gas Summary from the Short-Term Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

Summary from the Short-Term Energy Outlook Summary from the Short-Term Energy Outlook EIA Home > Natural Gas > Natural Gas Weekly Update Natural Gas Summary from the Short-Term Energy Outlook This summary is based on the most recent Short-Term Energy Outlook released May 6, 2002. EIA projects that natural gas wellhead prices will average $2.73 per MMBtu in 2002 compared with about $4.00 per MMBtu last year (Short-Term Energy Outlook, May 2002). This projection reflects the sharp increases in spot and near-term futures prices in recent weeks. Average wellhead prices have risen 38 percent from $2.14 per MMBtu in February to an estimated $2.96 in April. Spot prices at the Henry Hub have increased to an even greater extent, rising more than $1.50 per MMBtu since early February. The upward price trend reflects a number of influences, such as unusual weather patterns that have led to increased gas consumption, and tensions in the Middle East and rising crude oil prices. Other factors contributing to the recent price surge include the strengthening economy, the increased capacity and planned new capacity of gas-burning power plants, and concerns about the decline in gas-directed drilling.

405

Investigation of a Polarization Controller in Titanium Diffused Lithium Niobate Waveguide near 1530 nm Wavelength  

E-Print Network [OSTI]

the field distribution for a guided-wave in each of the three different regions of figure 1. The propagation constant ? is called the eigen value, and can be determined by applying continuity condition to the magnetic field component Ez at x = -t, 2 )tan... the following eigen value expression for TM-polarization 2 2 2 22 )tan( h pq nn n h p n n q n n ht sc g c g s g ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? . (26) The number of allowed eigen values (?) depends on ng, nc, ns, t, and ?o...

Sung, Won Ju

2013-12-10T23:59:59.000Z

406

Demonstration of wide-angle beam steering optics in wavelength-division-multiplexing indoor optical wireless LAN with dedicated CMOS imager  

Science Journals Connector (OSTI)

We are developing a new indoor optical wireless LAN system, in which dedicated CMOS imagers are utilized to offer location-aware visually-intuitive wireless communications, wavelength- or space-division-multiplexing high-speed data transfer, and compact ... Keywords: CMOS imager, beam steering, free-space optical communications, indoor optical wireless LAN, wavelength multiplexing

Keiichiro Kagawa; Jun Tanida

2008-11-01T23:59:59.000Z

407

Reduced-size Microstrip Four-Pole Bandpass Filter Using Two-layer Structure with Quarter-Wavelength Resonators and Open Stub Inverters  

E-Print Network [OSTI]

-Wavelength Resonators and Open Stub Inverters Azzeddine Djaiz and Tayeb A. Denidni and Halim Boutayeb INRS-layer structure with quarter-wavelength resonators and open stub inverters is proposed. The coupling between the layers. The open stub inverters are used in order to increase the selectivity of the filter and to avoid

Boyer, Edmond

408

Microbunching Instability in a Chicane: Two-Dimensional Mean Field Treatment  

SciTech Connect (OSTI)

We study the microbunching instability in a bunch compressor by a parallel code with some improved numerical algorithms. The two-dimensional charge/current distribution is represented by a Fourier series, with coefficients determined through Monte Carlo sampling over an ensemble of tracked points. This gives a globally smooth distribution with low noise. The field equations are solved accurately in the lab frame using retarded potentials and a novel choice of integration variables that eliminates singularities. We apply the scheme with parameters for the first bunch compressor system of FERMI{at}Elettra, with emphasis on the amplification of a perturbation at a particular wavelength. Gain curves agree with those of the linearized Vlasov model at long wavelengths, but show some deviation at the smallest wavelengths treated.

Bassi, G.; Ellison, James A.; Heinemann, Klaus; Warnock, Robert; /Liverpool U. /Cockroft Inst. /New Mexico U. /SLAC /LBL, Berkeley

2009-01-27T23:59:59.000Z

409

DSOPilot project Automatic receipt of short circuiting indicators (Smart  

Open Energy Info (EERE)

DSOPilot project Automatic receipt of short circuiting indicators (Smart DSOPilot project Automatic receipt of short circuiting indicators (Smart Grid Project) Jump to: navigation, search Project Name DSOPilot project Automatic receipt of short circuiting indicators Country Denmark Coordinates 56.26392°, 9.501785° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":56.26392,"lon":9.501785,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

410

Short-Term Energy Outlook Annual Supplement 1995  

Gasoline and Diesel Fuel Update (EIA)

5) 5) Distribution Category UC-950 Short-Term Energy Outlook Annual Supplement 1995 Energy Information Administration Office of Energy Markets and End Use U.S. Department of Energy Washington, DC 20585 This report was prepared by the Energy Information Administration, the independent statistical and analytical agency within the Department of Energy. The information contained herein should not be construed as advocating or reflecting any policy position of the Department of Energy or any other organization. Energy Information Administration/ Short-Term Energy Outlook Annual Supplement 1995 ii Contacts Contacts The Short-Term Energy Outlook Annual Supplement is prepared by the Energy Information Administration (EIA), Office of Energy Markets and End Use (EMEU). General questions concerning the content of the report may be directed to W. Calvin Kilgore (202/586-1617),

411

Short-Term Energy Outlook, Annual Supplement 1994  

Gasoline and Diesel Fuel Update (EIA)

4) 4) Distribution Category UC-950 Short-Term Energy Outlook Annual Supplement 1994 Energy Information Administration Office of Energy Markets and End Use U.S. Department of Energy Washington, DC 20585 This report was prepared by the Energy Information Administration, the independent statistical and analytical agency within the Department of Energy. The information contained herein should not be construed as advocating or reflecting any policy position of the Department of Energy or any other organization. Energy Information Administration/ Short-Term Energy Outlook Annual Supplement 1994 ii Contacts Contacts The Short-Term Energy Outlook Annual Supplement is prepared by the Energy Information Administration (EIA), Office of Energy Markets and End Use (EMEU). General questions concerning the content of the report may be directed to W. Calvin Kilgore (202/586-1617),

412

Summary Short-Term Petroleum and Natural Gas Outlook  

Gasoline and Diesel Fuel Update (EIA)

Short-Term Petroleum and Natural Gas Outlook Short-Term Petroleum and Natural Gas Outlook 1/12/01 Click here to start Table of Contents Summary Short-Term Petroleum. and Natural Gas Outlook WTI Crude Oil Price: Base Case and 95% Confidence Interval Real and Nominal Crude Oil Prices OPEC Crude Oil Production 1999-2001 Total OECD Oil Stocks* U.S. Crude Oil Inventory Outlook U.S. Distillate Inventory Outlook Distillate Stocks Are Important Part of East Coast Winter Supply Retail Heating Oil and Diesel Fuel Prices Consumer Winter Heating Costs U.S. Total Gasoline Inventory Outlook Retail Motor Gasoline Prices* U.S. Propane Total Stocks Average Weekly Propane Spot Prices Current Natural Gas Spot Prices: Well Above the Recent Price Range Natural Gas Spot Prices: Base Case and 95% Confidence Interval Working Gas in Storage (Percentage Difference fron Previous 5-Year Average)

413

General Relativistic Binary Merger Simulations and Short Gamma Ray Bursts  

E-Print Network [OSTI]

The recent localization of some short-hard gamma ray bursts (GRBs) in galaxies with low star formation rates has lent support to the suggestion that these events result from compact object binary mergers. We discuss how new simulations in general relativity are helping to identify the central engine of short-hard GRBs. Motivated by our latest relativistic black hole-neutron star merger calculations, we discuss a scenario in which these events may trigger short-hard GRBs, and compare this model to competing relativistic models involving binary neutron star mergers and the delayed collapse of hypermassive neutron stars. Distinguishing features of these models may help guide future GRB and gravitational wave observations to identify the nature of the sources.

Joshua A. Faber; Thomas W. Baumgarte; Stuart L. Shapiro; Keisuke Taniguchi

2006-03-10T23:59:59.000Z

414

Electricity storage for short term power system service (Smart Grid  

Open Energy Info (EERE)

storage for short term power system service (Smart Grid storage for short term power system service (Smart Grid Project) Jump to: navigation, search Project Name Electricity storage for short term power system service Country Denmark Coordinates 56.26392°, 9.501785° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":56.26392,"lon":9.501785,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

415

ISOTOPE SEPARATION BY IONIC EXPANSION IN A MAGNETIC FIELD  

Science Journals Connector (OSTI)

...To calculate the electric fields and potentials...than enough to bring the discharge out to the insulated...plate can have but one electric potential, and it must...ions and electrons is an electric arc of short length, 1...

Joseph Slepian

1955-01-01T23:59:59.000Z

416

Long-wavelength anomalous diffusion mode in the two-dimensional XY dipole magnet  

E-Print Network [OSTI]

omega similar to k(y)(Delta y) and i omega similar to k(x)(Delta x), where Delta(y)=47/27 and Delta(x)=47/36. The low-frequency response to the external magnetic field is found....

Abanov, Artem; Kashuba, A.; Pokrovsky, Valery L.

1997-01-01T23:59:59.000Z

417

HIGH RESOLUTION OBSERVATIONS OF MULTI-WAVELENGTH EMISSIONS DURING TWO X-CLASS  

E-Print Network [OSTI]

, Newark, NJ 07102 2. Big Bear Solar Observatory, 40386 North Shore Lane, Big Bear City, CA 92314 yx2@njit Doppler Imager (MDI) and hard X-ray (HXR) data of the Ramaty High Energy Solar Spectroscopic Imager- servations. The derived electric fields in the reconnection current sheet Ec are about 23 V cm-1 and 22 V cm

418

Multi-wavelength high-resolution observations of a small-scale emerging magnetic flux event and the chromospheric and coronal response  

E-Print Network [OSTI]

State-of-the-art solar instrumentation is revealing magnetic activity of the Sun with unprecedented resolution. Observations with the 1.6m New Solar Telescope of the Big Bear Solar Observatory are making next steps in our understanding of the solar surface structure. Granular-scale magnetic flux emergence and the response of the solar atmosphere are among the key research. As part of a joint observing program with NASA's IRIS mission, the NST observed active region NOAA 11810 in photospheric and chromospheric wavelengths. Complimentary data are provided by SDO and Hinode space-based telescopes. The region displayed a group of solar pores, in the vicinity of which we detect a small-scale buoyant horizontal magnetic flux tube causing abnormal granulation and interacting with the pre-existing ambient field in upper atmospheric layers. Following the expansion of distorted granules at the emergence site, we observed a sudden appearance of an extended surge in the HeI data. IRIS catched ejection of a hot plasma jet...

Dominguez, Santiago Vargas; Yurchyshyn, Vasyl

2014-01-01T23:59:59.000Z

419

Mitigation of Electromagnetic Pulse (EMP) Effects from Short-Pulse Lasers and Fusion Neutrons  

SciTech Connect (OSTI)

Our research focused on obtaining a fundamental understanding of the source and properties of EMP at the Titan PW(petawatt)-class laser facility. The project was motivated by data loss and damage to components due to EMP, which can limit diagnostic techniques that can be used reliably at short-pulse PW-class laser facilities. Our measurements of the electromagnetic fields, using a variety of probes, provide information on the strength, time duration, and frequency dependence of the EMP. We measure electric field strengths in the 100's of kV/m range, durations up to 100 ns, and very broad frequency response extending out to 5 GHz and possibly beyond. This information is being used to design shielding to mitigate the effects of EMP on components at various laser facilities. We showed the need for well-shielded cables and oscilloscopes to obtain high quality data. Significant work was invested in data analysis techniques to process this data. This work is now being transferred to data analysis procedures for the EMP diagnostics being fielded on the National Ignition Facility (NIF). In addition to electromagnetic field measurements, we measured the spatial and energy distribution of electrons escaping from targets. This information is used as input into the 3D electromagnetic code, EMSolve, which calculates time dependent electromagnetic fields. The simulation results compare reasonably well with data for both the strength and broad frequency bandwidth of the EMP. This modeling work required significant improvements in EMSolve to model the fields in the Titan chamber generated by electrons escaping the target. During dedicated Titan shots, we studied the effects of varying laser energy, target size, and pulse duration on EMP properties. We also studied the effect of surrounding the target with a thick conducting sphere and cube as a potential mitigation approach. System generated EMP (SGEMP) in coaxial cables does not appear to be a significant at Titan. Our results are directly relevant to planned short-pulse ARC (advanced radiographic capability) operation on NIF.

Eder, D C; Throop, A; Brown, Jr., C G; Kimbrough, J; Stowell, M L; White, D A; Song, P; Back, N; MacPhee, A; Chen, H; DeHope, W; Ping, Y; Maddox, B; Lister, J; Pratt, G; Ma, T; Tsui, Y; Perkins, M; O'Brien, D; Patel, P

2009-03-06T23:59:59.000Z

420

Broadband carbon monoxide laser system operating in the wavelength range of 2.5 - 8.3 {mu}m  

SciTech Connect (OSTI)

A two-cascade frequency conversion of CO-laser radiation is demonstrated in a single sample of a nonlinear ZnGeP{sub 2} crystal. The crystal is pumped by a repetitively pulsed cryogenic lowpressure CO laser operating on {approx}150 vibration - rotational transitions in the wavelength range 5.0 - 7.5 {mu}m, which corresponds to the frequency range of a half octave. In the first conversion cascade, generation of second harmonic and sum frequencies of various pairs of CO-laser radiation give {approx}350 emission lines in the wavelength range 2.5 - 3.7 {mu}m. In the second cascade, by mixing the radiation converted in the first cascade with the residual radiation of the CO laser we have obtained {approx}90 lines in the range 4.3 - 5.0 {mu}m and more than 80 lines in the range 7.5 - 8.3 {mu}m. Thus, using a single sample of the nonlinear ZnGeP{sub 2} crystal pumped by the radiation of a single CO laser we have produced a source of broadband (more than one and a half octaves) laser radiation, simultaneously operating at {approx}670 lines in the wavelength range 2.5 - 8.3 {mu}m. (lasers)

Andreev, Yu M; Ionin, Andrei A; Kinyaevsky, I O; Klimachev, Yu M; Kozlov, A Yu; Kotkov, A A; Lanskii, G V; Shaiduko, A V

2013-02-28T23:59:59.000Z

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


421

Design of a TOF-SANS instrument for the proposed Long Wavelength Target Station at the Spallation Neutron Source.  

SciTech Connect (OSTI)

We have designed a versatile high-throughput SANS instrument [Broad Range Intense Multipurpose SANS (BRIMS)] for the proposed Long Wavelength Target Station at the SNS by using acceptance diagrams and the Los Alamos NISP Monte Carlo simulation package. This instrument has been fully optimized to take advantage of the 10 Hz source frequency (broad wavelength bandwidth) and the cold neutron spectrum from a tall coupled solid methane moderator (12 cm x 20 cm). BRIMS has been designed to produce data in a Q range spanning from 0.001 to 0.7 {angstrom}{sup {minus}1} in a single measurement by simultaneously using neutrons with wavelengths ranging from 1 to 14.5 {angstrom} in a time of flight mode. A supermirror guide and bender assembly is employed to separate and redirect the useful portion of the neutron spectrum with {lambda} > 1 {angstrom}, by 2.3{degree} away from the direct beam containing high energy neutrons and {gamma} rays. The effects of the supermirror coating of the guide, the location of the bender assembly with respect to the source, the bend angle, and various collimation choices on the flux, resolution and Q{sub min} have been characterized using spherical particle and delta function scatterers. The overall performance of BRIMS has been compared with that of the best existing reactor-based SANS instrument D22 at ILL.

Thiyagarajan, P.; Littrell, K.; Seeger, P. A.

2000-11-28T23:59:59.000Z

422

Multi-wavelength Emission from the Fermi Bubble I. Stochastic acceleration from Background Plasma  

E-Print Network [OSTI]

We analyse processes of electron acceleration in the Fermi Bubbles in order to define parameters and restrictions of the models, which are suggested for the origin of these giant radio and gamma-ray structures. In the case of leptonic origin of the nonthermal radiation from the Bubbles, these electrons should be produced somehow in-situ because of relatively short lifetime of high energy electrons, which lose their energy by synchrotron and inverse Compton processes. It has been suggested that electrons in Bubbles may be accelerated by shocks produced by tidal disruption of star accreting onto the central black hole or a process of re-acceleration of electrons ejected by supernova remnants. These processes will be investigated in subsequent papers. In this paper we focus to study in-situ stochastic (Fermi) acceleration by a hydromagnetic/supersonic turbulence, in which electrons can be directly accelerated from the background plasma. We showed that the acceleration from the background plasma is able to explai...

Cheng, K S; Dogiel, V A; Ko, C M

2014-01-01T23:59:59.000Z

423

Golden Field Office Contacts  

Broader source: Energy.gov [DOE]

Field contacts at the U.S. Department of Energy's Golden Field Office who support the Federal Energy Management Program (FEMP)

424

Quantum Field Theory & Gravity  

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

Field Theory & Gravity Quantum Field Theory & Gravity Understanding discoveries at the Energy, Intensity, and Cosmic Frontiers Get Expertise Rajan Gupta (505) 667-7664 Email...

425

Short Cut Fusion of Recursive Programs with Computational  

E-Print Network [OSTI]

of inductive types. It also proves correct a fusion rule which generalizes the fold/ build and fold Cut Fusion for Inductive Types Inductive datatypes are fixed points of functors. Functors canChapter 21 Short Cut Fusion of Recursive Programs with Computational Effects Neil Ghani1, Patricia

Ghani, Neil

426

Short Communication Catalytic coal gasification: use of calcium versus potassium*  

E-Print Network [OSTI]

Short Communication Catalytic coal gasification: use of calcium versus potassium* Ljubisa R on the gasification in air and 3.1 kPa steam of North Dakota lignitic chars prepared under slow and rapid pyrolysis of calcium is related to its sintering via crystallite growth. (Keywords: coal; gasification; catalysis

427

Short communication Localized structures generated by subcritical instabilities  

E-Print Network [OSTI]

1829 Short communication Localized structures generated by subcritical instabilities O. Thual(1 cases the possible ori- gin of localized structures lies in the existence of a subcritical instability.1051/jphys:0198800490110182900 #12;1830 structure in the vicinity of a subcritical instabi- lity

Paris-Sud XI, Université de

428

ANALYSIS OF SHORT-TERM SOLAR RADIATION DATA Gayathri Vijayakumar  

E-Print Network [OSTI]

and short- term radiation data. 1. INTRODUCTION Analyses to predict long-term performances of solar energy commonly used in these analyses and are readily available; (e.g., hourly data for 239 US locations for 30, TN, Madison, WI, Seattle, WA, Salt Lake City, UT, and Sterling, VA. One year of ISIS data, from

Wisconsin at Madison, University of

429

Short-Term Solar Energy Forecasting Using Wireless Sensor Networks  

E-Print Network [OSTI]

Short-Term Solar Energy Forecasting Using Wireless Sensor Networks Stefan Achleitner, Tao Liu an advantage for output power prediction. Solar Energy Prediction System Our prediction model is based variability of more then 100 kW per minute. For practical usage of solar energy, predicting times of high

Cerpa, Alberto E.

430

Project Application: Lie Theory and Applications Short description  

E-Print Network [OSTI]

Project Application: Lie Theory and Applications Short description Several lines of investigation. Approximations procedures on regular Fr´echet Lie groups aiming towards solving certain non-linear partial differential equations. We want to apply a new approximation procedure to nonlinear partial differential

Michor, Peter W.

431

Page 1 of 2 Yellow Tank Operation Short version  

E-Print Network [OSTI]

Page 1 of 2 Yellow Tank Operation ­ Short version Pressure Gauge Accuracy: Note that the pressure gauge (Alcatel 74009 ACC 1009) on the yellow tank is accurate to 30% of the value read, so readings have downstairs): 1. Make sure Yellow Tank is completely sealed, fire vent closed. Main door bolts should

432

INTO Colorado State University, Academic Advisor: Short Description Position Description  

E-Print Network [OSTI]

INTO Colorado State University, Academic Advisor: Short Description Position Description INTO Colorado State University (INTO CSU) seeks one full-time, 12-month academic advisor who will advise INTO CSU students. The primary responsibility of the academic advisor is to promote and facilitate

Stephens, Graeme L.

433

ELSEVIER Bioeleetrochemistryand Bioenergetics38(1995)411-414 Short communication  

E-Print Network [OSTI]

Symposiumon Bioelectrochemistry and Bioenergetics,Sevilla,Spain,25-30 September1994. 0302-4598/95/$09.50 © 1995ElsevierELSEVIER Bioeleetrochemistryand Bioenergetics38(1995)411-414 Short communication Artificial muscles of consecutive #12;412 T.F. Otero,J.M. Sansihena/ Bioelectrochemistryand Bioenergetics38 (1995)411-414 (b)(o) (c

Otero, Toribio Fernández

434

Please Supply Short Title 1 MOLECULAR BIOTECHNOLOGY Volume 34, 2006  

E-Print Network [OSTI]

Please Supply Short Title 1 MOLECULAR BIOTECHNOLOGY Volume 34, 2006 Job: Molecular Biotechnology Biotechnology 2006 Humana Press Inc. All rights of any nature whatsoever reserved. ISSN: 1073­6085/Online ISSN and insect-resistance #12;Job: Molecular Biotechnology Operator: SV Chapter: Budak/MB06-0022 Date: 6/06 Pub

Yanikoglu, Berrin

435

Short term forecasting of solar radiation based on satellite data  

E-Print Network [OSTI]

Short term forecasting of solar radiation based on satellite data Elke Lorenz, Annette Hammer University, D-26111 Oldenburg Forecasting of solar irradiance will become a major issue in the future integration of solar energy resources into existing energy supply structures. Fluctuations of solar irradiance

Heinemann, Detlev

436

Tuning a short coherence length Josephson junction through a  

E-Print Network [OSTI]

Tuning a short coherence length Josephson junction through a metal-insulator transition J. K University, Josephson Junction talk, 2001 #12;Josephson Tunnel Junctions · A Superconductor maintaining nonhysteretic behavior. J. K. Freericks, Georgetown University, Josephson Junction talk, 2001 S N

Freericks, Jim

437

SHORT REPORT Open Access Nuclear lipid droplets identified by electron  

E-Print Network [OSTI]

SHORT REPORT Open Access Nuclear lipid droplets identified by electron microscopy of serial that nuclear lipid droplets (LDs) are organized into domains similar to those of cytoplasmic LDs with the nuclear envelope, it could be suggested however that nuclear LDs are cytoplamic LDs trapped within

Boyer, Edmond

438

Short-term production and synoptic influences on atmospheric 7  

E-Print Network [OSTI]

Short-term production and synoptic influences on atmospheric 7 Be concentrations Ilya G. Usoskin,1; published 21 March 2009. [1] Variations of the cosmogenic radionuclide 7 Be in the global atmosphere the variations in the 7 Be concentration in the atmosphere for the period from 1 January to 28 February 2005

439

Short proofs of the Quantum Substate Theorem National U. Singapore  

E-Print Network [OSTI]

Short proofs of the Quantum Substate Theorem Rahul Jain National U. Singapore Ashwin Nayak U. Waterloo December 30, 2011 Abstract The Quantum Substate Theorem due to Jain, Radhakrishnan, and Sen (2002 a substate of . We present new proofs of this theorem. The resulting statement is optimal up to a constant

Nayak, Ashwin

440

MORPHOLOGY DEPENDENT SHORT CIRCUIT CURRENT IN BULK HETEROJUNCTION SOLAR CELL  

E-Print Network [OSTI]

a relatively inexpensive option for the future solar cell technology, provided its efficiency increases beyondMORPHOLOGY DEPENDENT SHORT CIRCUIT CURRENT IN BULK HETEROJUNCTION SOLAR CELL Biswajit Ray, Pradeep, West Lafayette, Indiana, USA ABSTRACT Polymer based bulk heterostructure (BH) solar cell offers

Alam, Muhammad A.

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


441

Short Communication Three ocean state indices implemented in  

E-Print Network [OSTI]

, and currents at various resolutions. We briefly present the OFS, then describe three currently available oceanShort Communication Three ocean state indices implemented in the Mercator-Ocean operational suite L., and Soulat, F. 2008. Three ocean state indices implemented in the Mercator-Ocean operational suite. ­ ICES

Ribes, Aurélien

442

Evaluating ecosystem processes in willow short rotation coppice bioenergy plantations  

E-Print Network [OSTI]

Evaluating ecosystem processes in willow short rotation coppice bioenergy plantations R E B E C C body of research linking bioenergy cultivation to changing patterns of biodiversity, there has been remarkably little interest in how bioenergy plantations affect key ecosystem processes underpinning impor

443

A New Excitation Technique for Wideband Short Backfire Antennas  

E-Print Network [OSTI]

Papapolymerou, Joy Laskar, and Manos M. Tentzeris Georgia Electronic Design Center School of Electrical the impedance bandwidth and to lower the manufacturing cost of a short backfire antenna (SBA). The new or cable connection), the cost-effectiveness of a wireless deployment is a big issue of concern. Also

Tentzeris, Manos

444

Short Time Behavior in de Gennes' Reptation Model  

Science Journals Connector (OSTI)

To establish a standard for the distinction of reptation from other modes of polymer diffusion, we analytically and numerically study the displacement of the central bead of a chain diffusing through an ordered obstacle array for times t100). Our analytically solvable model furthermore predicts a very short transient for the fourth moment. This is verified by computer experiment.

Ute Ebert, Artur Baumgärtner, and Lothar Schäfer

1997-02-24T23:59:59.000Z

445

Solar Cells, 14 (1985) 289 -291 289 Short Communication  

E-Print Network [OSTI]

for CdS/CuInSe2 thin film solar cells by electron beam assisted chemical vapor deposition B. J. STANBERYSolar Cells, 14 (1985) 289 - 291 289 Short Communication Silicon nitride anti-reflection coatings; accepted January 2, 1985) The electron beam assisted chemical vapor deposition of silicon nitride anti

Rocca, Jorge J.

446

SHORT COMMUNICATION Bernard Fried Pieter T. J. Johnson  

E-Print Network [OSTI]

SHORT COMMUNICATION Bernard Fried Ă? Pieter T. J. Johnson In vitro excystment of the metacercariae have aroused considerable interest. (e.g., Johnson et al. 1999; Blaustein and Johnson 2003; Johnson in missing gaps on the biology of R. ondatrae (Johnson et al. 2004). One area of research interest

Johnson, Pieter

447

Heart Knowledge A short time after being diagnosed with  

E-Print Network [OSTI]

Heart Knowledge A short time after being diagnosed with cancer in December of 2005 I was having healing." "Listen with your heart," he said. He insisted I put my full faith in my oncologist, my surgeon that I needed to attend to my "inner healing and heart knowledge." What did Cliff mean by "heart

O'Laughlin, Jay

448

Short communication Origin of arrhythmias in a heart model  

E-Print Network [OSTI]

Short communication Origin of arrhythmias in a heart model Hiba Sheheitli, Richard Rand * Dept oscillators a b s t r a c t An investigation of the nonlinear dynamics of a heart model is presented. The model com- partmentalizes the heart into one part that beats autonomously (the x oscillator), repre

Rand, Richard H.

449

Management and Conservation Short-Term Impacts of Wind Energy  

E-Print Network [OSTI]

Management and Conservation Short-Term Impacts of Wind Energy Development on Greater Sage associated with wind energy development on greater sage-grouse populations. We hypothesized that greater sage-grouse nest, brood, and adult survival would decrease with increasing proximity to wind energy infrastructure

Beck, Jeffrey L.

450

Short-Term Energy Outlook: Quarterly projections. Fourth quarter 1993  

SciTech Connect (OSTI)

The Energy Information Administration (EIA) prepares quarterly, short-term energy supply, demand, and price projections for publication in February, May, August, and November in the Short-Term Energy Outlook (Outlook). An annual supplement analyzes the performance of previous forecasts, compares recent cases with those of other forecasting services, and discusses current topics related to the short-term energy markets. (See Short-Term Energy Outlook Annual Supplement, DOE/EIA-0202.) The forecast period for this issue of the Outlook extends from the fourth quarter of 1993 through the fourth quarter of 1994. Values for the third quarter of 1993, however, are preliminary EIA estimates (for example, some monthly values for petroleum supply and disposition are derived in part from weekly data reported in the Weekly Petroleum Status Report) or are calculated from model simulations using the latest exogenous information available (for example, electricity sales and generation are simulated using actual weather data). The historical energy data are EIA data published in the Monthly Energy Review, Petroleum Supply Monthly, and other EIA publications.

Not Available

1993-11-05T23:59:59.000Z

451

Short Communication Discovery of a regionally important green turtle  

E-Print Network [OSTI]

Short Communication Discovery of a regionally important green turtle Chelonia mydas rookery and other Syrian beaches was undertaken to improve and update knowledge of Syria's marine turtle nesting populations. The survey confirmed that loggerhead turtles Caretta caretta nest in Syria (eight nests recorded

Exeter, University of

452

Oryx Vol 36 No 4 October 2002 Short Communication  

E-Print Network [OSTI]

Oryx Vol 36 No 4 October 2002 Short Communication First census of the green turtle at Poila~ o to be an important nesting site for the green turtle Chelonia mydas, but until recently has contributed of nesting, and an estimated 7,400 green turtle clutches were deposited. Four nesting hawksbill turtles

Exeter, University of

453

SHORT COMMUNICATION Flow rate-modified streaming effects in heterogeneous  

E-Print Network [OSTI]

the streaming potential (Norde and Rouwendal 1990; Elgersma et al. 1992; Werner et al. 1999) or streamingSHORT COMMUNICATION Flow rate-modified streaming effects in heterogeneous microchannels Junjie Zhu relations is developed to study the streaming potential and streaming current in heterogeneous micro

Xuan, Xiangchun "Schwann"

454

Short communication Influence of molybdenum and sulfur on copper  

E-Print Network [OSTI]

Short communication Influence of molybdenum and sulfur on copper metabolism in sheep: comparison of molybdenum able to trigger the copper sulfur molybdenum interference in sheep was measured with either only) and 4 increasing molybdenum doses. The sulfur-molybdenum-copper interference was quantified

Paris-Sud XI, Université de

455

Little Green Codes: Energy-Efficient Short-Range Communication  

E-Print Network [OSTI]

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

California at Irvine, University of

456

Short fiction creative writing: storytelling with a film perspective  

E-Print Network [OSTI]

of photograph versus motion pictures to describe the difference between short fiction and the novel, and I agree, as the photograph presents a still-life examination of a situation ? an event pulled from a series of events, but having its own structure...

Francis, James

2005-08-29T23:59:59.000Z

457

Torus Formation in Neutron Star Mergers and Well-Localized Short Gamma-Ray Bursts  

E-Print Network [OSTI]

Merging neutron stars (NSs) are hot candidates for the still enigmatic sources of short gamma-ray bursts (GRBs). If the central engines of the huge energy release are accreting relic black holes (BHs) of such mergers, it is important to understand how the properties of the BH-torus systems, in particular disc masses and mass and rotation rate of the compact remnant, are linked to the characterizing parameters of the NS binaries. For this purpose we present relativistic smoothed particle hydrodynamics simulations with conformally flat approximation of the Einstein field equations and a physical, non-zero temperature equation of state. Thick disc formation is highlighted as a dynamical process caused by angular momentum transfer through tidal torques during the merging process of asymmetric systems or in the rapidly spinning triaxial post-merger object. Our simulations support the possibility that the first well-localized short and hard GRBs 050509b, 050709, 050724, 050813 have originated from NS merger events and are powered by neutrino-antineutrino annihilation around a relic BH-torus system. Using model parameters based on this assumption, we show that the measured GRB energies and durations lead to estimates for the accreted masses and BH mass accretion rates which are compatible with theoretical expectations. In particular, the low energy output and short duration of GRB 050509b set a very strict upper limit of less than 100 ms for the time interval after the merging until the merger remnant has collapsed to a BH, leaving an accretion torus with a small mass of only about 0.01 solar masses. This favors a (nearly) symmetric NS+NS binary with a typical mass as progenitor system.

R. Oechslin; H. -Th. Janka

2005-07-05T23:59:59.000Z

458

Short sequence motifs, overrepresented in mammalian conservednon-coding sequences  

SciTech Connect (OSTI)

Background: A substantial fraction of non-coding DNAsequences of multicellular eukaryotes is under selective constraint. Inparticular, ~;5 percent of the human genome consists of conservednon-coding sequences (CNSs). CNSs differ from other genomic sequences intheir nucleotide composition and must play important functional roles,which mostly remain obscure.Results: We investigated relative abundancesof short sequence motifs in all human CNSs present in the human/mousewhole-genome alignments vs. three background sets of sequences: (i)weakly conserved or unconserved non-coding sequences (non-CNSs); (ii)near-promoter sequences (located between nucleotides -500 and -1500,relative to a start of transcription); and (iii) random sequences withthe same nucleotide composition as that of CNSs. When compared tonon-CNSs and near-promoter sequences, CNSs possess an excess of AT-richmotifs, often containing runs of identical nucleotides. In contrast, whencompared to random sequences, CNSs contain an excess of GC-rich motifswhich, however, lack CpG dinucleotides. Thus, abundance of short sequencemotifs in human CNSs, taken as a whole, is mostly determined by theiroverall compositional properties and not by overrepresentation of anyspecific short motifs. These properties are: (i) high AT-content of CNSs,(ii) a tendency, probably due to context-dependent mutation, of A's andT's to clump, (iii) presence of short GC-rich regions, and (iv) avoidanceof CpG contexts, due to their hypermutability. Only a small number ofshort motifs, overrepresented in all human CNSs are similar to bindingsites of transcription factors from the FOX family.Conclusion: Human CNSsas a whole appear to be too broad a class of sequences to possess strongfootprints of any short sequence-specific functions. Such footprintsshould be studied at the level of functional subclasses of CNSs, such asthose which flank genes with a particular pattern of expression. Overallproperties of CNSs are affected by patterns in mutation, suggesting thatselection which causes their conservation is not always verystrong.

Minovitsky, Simon; Stegmaier, Philip; Kel, Alexander; Kondrashov,Alexey S.; Dubchak, Inna

2007-02-21T23:59:59.000Z

459

Magnetically Switchable Shorted Patch Antenna Sheikh Sharif Iqbal, Khaled Y. Al-Qurashi  

E-Print Network [OSTI]

Magnetically Switchable Shorted Patch Antenna Sheikh Sharif Iqbal, Khaled Y. Al-Qurashi King Fahd, shorting post, Microstrip Patch ABSTRACT: Switchable magnetic media and shorting posts are popular, a ferrite based shorted patch antenna is designed to demonstrate magnetically switchable frequency response

Iqbal, Sheikh Sharif

460

Displacement of the electron cyclotron resonance heating region and time evolution of the characteristics of short-wavelength turbulence in the 3D magnetic configuration of the L-2M stellarator  

Science Journals Connector (OSTI)

Reflection of the heating extraordinary microwave incident obliquely onto the surface of the electron cyclotron resonance (ECR) at the second harmonic ... stellarator was studied experimentally. The plasma was heated

G. M. Batanov; V. D. Borzosekov; L. V. Kolik; E. M. Konchekov…

2014-10-01T23:59:59.000Z

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


461

The long-lasting optical afterglow plateau of short burst GRB 130912A  

E-Print Network [OSTI]

The short burst GRB 130912A was detected by Swift, Fermi satellites and several ground-based optical telescopes. Its X-ray light curve decayed with time normally. The optical emission, however, displayed a long term plateau, which is the longest one in current short GRB observations. In this work we examine the physical origin of the X-ray and optical emission of this peculiar events. We find that the canonical forward shock afterglow emission model can account for the X-ray and optical data self-consistently and the energy injection model that has been widely adopted to interpret the shallowly-decaying afterglow emission is not needed. We also find that the burst was born in a very-low density interstellar medium, consistent with the compact object merger model. Significant fractions of the energy of the forward shock have been given to accelerate the non-thermal electrons and amplify the magnetic fields (i.e., $\\epsilon_{\\rm e}\\sim 0.37$ and $\\epsilon_{\\rm B}\\sim 0.16$, respectively), which are much larger ...

Zhu, Biao; Zhang, Shuai; Jin, Zhi-Ping; Wei, Da-Ming

2015-01-01T23:59:59.000Z

462

A Deterministic Scan-BIST Architecture with Application to Field Testing of High-Availability Systems  

E-Print Network [OSTI]

field testing are essential to ensure the reliable operation of computer-controlled systems. Protection to be used for field testing. The use of such short test sequences is desirable in safety-critical systems testing to be carried out with low system downtime. We synthesize the BIST logic for several ISCAS 89

Chakrabarty, Krishnendu

463

Short-Term Energy Outlook - U.S. Energy Information Administration (EIA)  

Gasoline and Diesel Fuel Update (EIA)

Special Analysis Special Analysis + EXPAND ALL Feature Articles Status of Libyan Loading Ports and Oil and Natural Gas Fields September 2013 PDF EIA Estimates of Crude Oil and Liquid Fuels Supply Disruptions September 2013 PDF 2013 Outlook for Gulf of Mexico Hurricane-Related Production Outages June 2013 PDF Summer 2013 Outlook for Residential Electric Bills June 2013 PDF Key drivers for EIA's short-term U.S. crude oil production outlook February 2013 PDF Constraints in New England likely to affect regional energy prices this winter January 2013 PDF Change in STEO Regional and U.S. Degree Day Calculations September 2012 PDF Changes to Electricity and Renewables Tables August 2012 PDF Brent Crude Oil Spot Price Forecast July 2012 PDF 2012 Outlook for Hurricane-Related Production Outages in the Gulf of Mexico June 2012 PDF

464

Magnetized hypermassive neutron star collapse: a central engine for short gamma-ray bursts  

E-Print Network [OSTI]

A hypermassive neutron star (HMNS) is a possible transient formed after the merger of a neutron star binary. In the latest magnetohydrodynamic simulations in full general relativity, we find that a magnetized HMNS undergoes `delayed' collapse to a rotating black hole (BH) as a result of angular momentum transport via magnetic braking and the magnetorotational instability. The outcome is a BH surrounded by a massive, hot torus with a collimated magnetic field. The torus accretes onto the BH at a quasi-steady accretion rate ~10 solar mass/s; the lifetime of the torus is ~10 ms. The torus has a temperature \\sim 10^{12} K, leading to copious neutrino-antineutrino thermal radiation. Therefore, the collapse of an HMNS is a promising scenario for generating short-duration gamma-ray bursts and an accompanying burst of gravitational waves and neutrinos.

Masaru Shibata; Matthew D. Duez; Yuk Tung Liu; Stuart L. Shapiro; Branson C. Stephens

2005-11-04T23:59:59.000Z

465

Heating Mechanisms in Short-Pulse Laser-Driven Cone Targets  

Science Journals Connector (OSTI)

The fast ignitor is a modern approach to laser fusion that uses a short-pulse laser to initiate thermonuclear burn. In its simplest form the laser launches relativistic electrons that carry its energy to a precompressed fusion target. Cones have been used to give the light access to the dense target core through the low-density ablative cloud surrounding it. Here the ANTHEM implicit hybrid simulation model shows that the peak ion temperatures measured in recent cone target experiments arose chiefly from return current joule heating, mildly supplemented by relativistic electron drag. Magnetic fields augment this heating only slightly, but capture hot electrons near the cone surface and force the hot electron stream into filaments.

R. J. Mason

2006-01-23T23:59:59.000Z

466

Metal multilayer mirrors for EUV wide field telescopes  

SciTech Connect (OSTI)

Metal multilayer mirrors have been designed for the ALEXIS satellite, which is to carry six wide field telescopes to perform an all-sky survey in three or four narrow wavelength bands in the EUV. Comprised of alternating layers of molybdenum and silicon, the mirrors are optimized to provide maximum reflectivity at angles from 11.5 to 17/degree/ off normal incidence and at wavelengths of 133, 171, or 186A. Simultaneously, the mirrors use a ''wavetrap'' described below to suppress reflectivity at 304A, where the extremely strong geocoronal line of He II causes severe background problems. Low reflectivity at 304A is achieved by superposing two layer pairs that provide destructive interference with an effective 2d spacing of 152A. The Mo layers in this wavetrap must be very thin, about 10A each, in order to allow the shorter wavelengths desired for peak reflectivity to penetrate without significant attenuation. Because refraction changes the effective angle of passage through the wavetrap, a joint optimization between layer thicknesses in the deep layers and the wavetrap layers must be performed for each target peak wavelength. For the 186A mirror, the optimum design from substrate upward is 40 layer pairs, each 74A Si and 31A Mo, followed by 2 layer pairs, each 55A Si and 10A Mo. Calculations predict this design will have a peak reflectivity at 186A of 35 percent and a 304A reflectivity less than 10/sup /minus/5/, if available optical constants are correct and the multilayer can be fabricated without difficulty. We will present details of the calculations and laboratory measurements of the reflectivity performance attained with prototype mirrors. 6 refs., 2 figs.

Smith, B.W.; Bloch, J.J.; Roussel-Dupre,D.

1989-01-01T23:59:59.000Z

467

Energy Information Administration/Short-Term Energy Outlook - October 2005  

Gasoline and Diesel Fuel Update (EIA)

5 5 1 October 2005 Short-Term Energy Outlook and Winter Fuels Outlook October 12, 2005 Release (Next Update: November 8, 2005) Overview Warnings from previous Outlooks about the potential adverse impacts of an active hurricane season on domestic energy supply and prices are unfortunately being reflected in the challenging realities brought about by Hurricanes Katrina and Rita. The impact of the hurricanes on oil and natural gas production, oil refining, natural gas processing, and pipeline systems have further strained already-tight natural gas and petroleum product markets on the eve of the 2005-2006 heating season (October through March). This combined Short-Term Energy and Winter Fuels Outlook provides a current view of domestic energy supply and

468

Working Group Reports A Short-Wave Radiometer Array Across  

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

9 9 Working Group Reports A Short-Wave Radiometer Array Across the Tropical Pacific Ocean as a Component of the TOGA-TAO Buoy Array R. M. Reynolds Brookhaven National Laboratory Upton, New York Introduction The purpose of this document is to bring together pertinent information concerning the NOAA TOGA-TAO buoy array so that a decision can be made for the following questions: 1. Are the scientific gains from an array of short-wave radiation sensors in the equatorial Pacific Ocean sufficiently impelling that DOE/ARM should provide financial and material support to NOAA/PMEL to install and operate this array? 2. What scientists and/or scientific studies would directly benefit from such a data set? 3. What should that array look like? That is, what sub-set of buoys should be so implemented given the per-buoy

469

Short-Term Energy and Winter Fuels Outlook October 2013  

Gasoline and Diesel Fuel Update (EIA)

and Winter Fuels Outlook October 2013 1 and Winter Fuels Outlook October 2013 1 October 2013 Short-Term Energy and Winter Fuels Outlook (STEO) Highlights ď‚· EIA projects average U.S. household expenditures for natural gas and propane will increase by 13% and 9%, respectively, this winter heating season (October 1 through March 31) compared with last winter. Projected U.S. household expenditures are 2% higher for electricity and 2% lower for heating oil this winter. Although EIA expects average expenditures for households that heat with natural gas will be significantly higher than last winter, spending for gas heat will still be lower than the previous 5-year average (see EIA Short-Term Energy and Winter Fuels Outlook slideshow). ď‚· Brent crude oil spot prices fell from a recent peak of $117 per barrel in early September to

470

Los Alamos National Laboratory's Safety Short program wins Department of  

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

Innovation Award Innovation Award Los Alamos National Laboratory's Safety Short program wins Department of Energy Innovation Award The Lab's Safety Short products address practices that promote the well-being of every Lab worker throughout each day, both at work and at home. October 7, 2010 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials.

471

Short Communication Test of parallel updating in Ising model simulation  

E-Print Network [OSTI]

509 Short Communication Test of parallel updating in Ising model simulation D.P. Landau* and D 13 janvier 1989) Résumé.2014 Le cumulant d'ordre 2 et 4 de l'aimantation est calculé pour un modèle d'Ising séquentielle. Abstract.2014 Simultaneous updating of Ising spins, following Neumann and Derrida, is tested

Boyer, Edmond

472

Hyperstars - Main Origin of Short Gamma Ray Bursts?  

E-Print Network [OSTI]

The first well-localized short-duration gamma ray bursts (GRBs), GRB 050509b, GRB 050709 and GRB 050724, could have been the narrowly beamed initial spike of a burst/hyper flare of soft gamma ray repeaters (SGRs) in host galaxies at cosmological distances. Such bursts are expected if SGRs are young hyperstars, i.e. neutron stars where a considerable fraction of their neutrons have converted to hyperons and/or strange quark matter.

Arnon Dar

2005-09-09T23:59:59.000Z

473

Subtask 4.2 - Coal Gasification Short Course  

SciTech Connect (OSTI)

Major utilities, independent power producers, and petroleum and chemical companies are intent on developing a fleet of gasification plants primarily because of high natural gas prices and the implementation of state carbon standards, with federal standards looming. Currently, many projects are being proposed to utilize gasification technologies to produce a synthesis gas or fuel gas stream for the production of hydrogen, liquid fuels, chemicals, and electricity. Financing these projects is challenging because of the complexity, diverse nature of gasification technologies, and the risk associated with certain applications of the technology. The Energy & Environmental Research Center has developed a gasification short course that is designed to provide technical personnel with a broad understanding of gasification technologies and issues, thus mitigating the real or perceived risk associated with the technology. Based on a review of research literature, tutorial presentations, and Web sites on gasification, a short course presentation was prepared. The presentation, consisting of about 500 PowerPoint slides, provides at least 7 hours of instruction tailored to an audience's interests and needs. The initial short course is scheduled to be presented September 9 and 10, 2009, in Grand Forks, North Dakota.

Kevin Galbreath

2009-06-30T23:59:59.000Z

474

Optimized Si/SiO2 high contrast grating mirror design for mid-infrared wavelength range: robustness enhancement  

E-Print Network [OSTI]

A high reflectivity and polarization selective high contrast grating mirror has been designed with the use of an automated optimization algorithm. Through a precise study of the tolerance of the different lengths of the structure, the robustness with respect to the fabrication errors has been enhanced to high tolerance values between 5 % and 210 %. This adjustment of the dimensions of the structure leads to a 250 nm large bandwidth mirror well adapted for a VCSEL application at \\lambda = 2.65 $\\mu$m and can easily be scaled for other wavelengths.

Chevallier, Christyves; Jacquet, Joel; Fressengeas, Nicolas; 10.1016/j.optlastec.2011.09.010

2011-01-01T23:59:59.000Z

475

The energy coupling efficiency of multi-wavelength laser pulses to damage initiating defects in DKDP nonlinear crystals  

SciTech Connect (OSTI)

The bulk damage performance of potassium dihydrogen phosphate crystals under simultaneous exposure to 1064-, 532-, and 355-nm nanosecond-laser pulses is investigated in order to probe the laser-induced defect reactions leading to damage initiation during frequency conversion. The results provide insight into the mechanisms governing the behavior of the damage initiating defects under exposure to high power laser light. In addition, it is suggested that the damage performance can be directly related to and predicted from the damage behavior of the crystal at each wavelength separately.

DeMange, P; Negres, R A; Rubenchik, A M; Radousky, H B; Feit, M D; Demos, S G

2007-09-25T23:59:59.000Z

476

Cooler-less and heat-sink free 980nm pump laser diode module wavelength-stabilized from -40 to 100 °C  

Science Journals Connector (OSTI)

Cooler-less 200mW kink free 980nm LD module was developed. Center wavelength was locked and unnecessary modes were suppressed from -40 to 100 deg. C. under low heat dissipation...

Irie, Yuichiro; Koseki, Takashi; Minamino, Masayuki; Miyokawa, Jun; Nishikata, Kevin; Koiso, Takeshi; Yamagata, Yuji; Ikegami, Yoshikazu

477

Wavelength-modulation-spectroscopy for real-time, in situ NO detection in combustion gases with a 5.2 ?m quantum-cascade laser  

Science Journals Connector (OSTI)

A mid-infrared absorption strategy with calibration-free wavelength-modulation-spectroscopy (WMS) has been developed and demonstrated for real-time, in situ detection of nitric oxide in particulate-laden combusti...

X. Chao; J. B. Jeffries; R. K. Hanson

2012-03-01T23:59:59.000Z

478

Production of wavelength-selective, time-resolved, x-ray images of a neon plasma in the SPEED 2 plasma focus  

Science Journals Connector (OSTI)

The dynamics of pinching of a neon plasma in the SPEED 2 facility has been investigated by recording wavelength-selective, x-ray images of the plasma with good space and time resolution. A series of images of the...

S. V. Bobashev; D. M. Simanovskii; G. Decker; W. Kies…

1997-04-01T23:59:59.000Z

479

Biobjective optimization for general oil field development  

Science Journals Connector (OSTI)

Abstract The optimization of oil field development and production planning typically requires the consideration of multiple, possibly conflicting, objectives. For example, in a waterflooding project, we might seek to maximize oil recovery and minimize water injection. It is therefore important to devise and test optimization procedures that consider two or more objectives in the determination of optimal development and production plans. In this work we present an approach for field development optimization with two objectives. A single-objective product formulation, which systematically combines the two objectives in a sequence of single-objective optimization problems, is applied. The method, called BiPSOMADS, utilizes at its core our recently developed PSO–MADS (Particle Swarm Optimization–Mesh Adaptive Direct Search) hybrid optimization algorithm. This derivative-free procedure has been shown to be effective for the solution of generalized field development and well control problems that include categorical, discrete and continuous variables along with general (nonlinear) constraints. Four biobjective field development and well control examples are solved using BiPSOMADS. These examples include problems that consider the maximization of both net present value and cumulative oil production, and the maximization of both long-term and short-term reservoir performance. An example that highlights the applicability of biobjective optimization for field development under geological uncertainty is also presented. This usage of BiPSOMADS enables us to maximize expected reservoir performance while reducing the risk associated with the worst-case scenario.

Obiajulu J. Isebor; Louis J. Durlofsky

2014-01-01T23:59:59.000Z

480

Short-range Ising spin glasses: the metastate interpretation of replica symmetry breaking  

E-Print Network [OSTI]

Parisi's formal replica-symmetry--breaking (RSB) scheme for mean-field spin glasses has long been interpreted in terms of many pure states organized ultrametrically. However, the early version of this interpretation, as applied to the short-range Edwards-Anderson model, runs into problems because as shown by Newman and Stein (NS) it does not allow for chaotic size dependence, and predicts non-self-averaging that cannot occur. NS proposed the concept of the metastate (a probability distribution over infinite-size Gibbs states in a given sample that captures the effects of chaotic size dependence) and a non-standard interpretation of the RSB results in which the metastate is non-trivial and is responsible for what was called non-self-averaging. Here we use the effective field theory of RSB, in conjunction with the rigorous definitions of pure states and the metastate in infinite-size systems, to show that the non-standard picture follows directly from the RSB mean-field theory. In addition, the metastate-averaged state possesses power-law correlations throughout the low temperature phase; the corresponding exponent $\\zeta$ takes the value $4$ according to the field theory in high dimensions $d$, and describes the effective fractal dimension of clusters of spins. Further, the logarithm of the number of pure states in the decomposition of the metastate-averaged state that can be distinguished if only correlations in a window of size $W$ can be observed is of order $W^{d-\\zeta}$. These results extend the non-standard picture quantitatively; we show that arguments against this scenario are inconclusive.

N. Read

2014-09-19T23:59:59.000Z

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


481

Toward a Diurnal Climatology of Cold-Season Turbulence Statistics in Continental Stratocumulus as Observed by the Atmospheric Radiation Millimeter- Wavelength Cloud Radars  

SciTech Connect (OSTI)

Numerous observational studies of marine stratocumulus have demonstrated a pronounced diurnal cycle. At night, longwave flux divergence at the top of the cloud drives negatively buoyant eddies that tend to keep the boundary layer well mixed. During the day, solar absorption by the cloud tends to reduce the turbulent intensity and often decouples the planetary boundary layer (PBL) into cloud- and sub-cloud circulations. The delicate balance between turbulent intensity, entrainment, and fluxes dictates cloud geometry and persistence, which can significantly impact the shortwave radiation budget. Millimeter-wavelength cloud radars (MMCRs) have been used to study the turbulent structure of boundary layer stratocumulus (e.g. Frisch et al. 1995; Kollias and Albrecht 2000). Analysis is confined to nondrizzling or lightly drizzling cloud systems for which precipitation contamination is negligible. Under such assumptions the Doppler velocity field becomes a proxy for vertical velocity. Prior research has mainly consisted of a few case studies of specific cloud systems using radar scan strategies optimized for this particular cloud type. The MMCR operating at the Southern Great Plains Atmospheric Radiation Measurement Climate Research Facility is broadly configured to be able to detect many different cloud types over a broad range of reflectivities and altitudes, so it is not specifically optimized for PBL clouds. Being in more-or-less continuous operation since the end of 1996, it does, however, have the advantage of long data coverage, which suggests that statistically significant measures of the diurnal cycle of turbulence should be attainable. This abstract summarizes the first few steps toward this goal, using 7 months of cold season MMCR data.

Mechem, D.B.; Kogan, Y.L.; Childers, M.E.; Donner, K.M.

2005-03-18T23:59:59.000Z

482

Widely tuneable scattering-type scanning near-field optical microscopy using pulsed quantum cascade lasers  

SciTech Connect (OSTI)

We demonstrate the use of a pulsed quantum cascade laser, wavelength tuneable between 6 and 10??m, with a scattering-type scanning near-field optical microscope (s-SNOM). A simple method for calculating the signal-to-noise ratio (SNR) of the s-SNOM measurement is presented. For pulsed lasers, the SNR is shown to be highly dependent on the degree of synchronization between the laser pulse and the sampling circuitry; in measurements on a gold sample, the SNR is 26 with good synchronization and less than 1 without. Simulations and experimental s-SNOM images, with a resolution of 100?nm, corresponding to ?/80, and an acquisition time of less than 90 s, are presented as proof of concept. They show the change in the field profile of plasmon-resonant broadband antennas when they are excited with wavelengths of 7.9 and 9.5??m.

Yoxall, Edward, E-mail: edward.yoxall@imperial.ac.uk; Rahmani, Mohsen; Maier, Stefan A.; Phillips, Chris C. [The Blackett Laboratory, Department of Physics, Imperial College London, London SW7 2AZ (United Kingdom)] [The Blackett Laboratory, Department of Physics, Imperial College London, London SW7 2AZ (United Kingdom); Navarro-Cía, Miguel [Optical and Semiconductor Devices Group, Department of Electrical and Electronic Engineering, Imperial College London, London SW7 2BT (United Kingdom)] [Optical and Semiconductor Devices Group, Department of Electrical and Electronic Engineering, Imperial College London, London SW7 2BT (United Kingdom)

2013-11-18T23:59:59.000Z

483

Determination of Electric-Field, Magnetic-Field, and Electric...  

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

Electric-Field, Magnetic-Field, and Electric-Current Distributions of Infrared Optical Antennas: A Near-Field Determination of Electric-Field, Magnetic-Field, and Electric-Current...

484

Golden Field Office  

Office of Energy Efficiency and Renewable Energy (EERE)

The Golden Field Office was designated a Department of Energy field office in December 1992 to provide EERE with enhanced capability to develop and commercialize renewable energy and energy...

485

Smoothness- transferred random field  

E-Print Network [OSTI]

We propose a new random field (RF) model, smoothness-transfer random field (ST-RF) model, for image modeling. In the objective function of RF models, smoothness energy is defined with compatibility function to capture the ...

Wei, Donglai

2013-01-01T23:59:59.000Z

486

Heliostat Field Performance  

Science Journals Connector (OSTI)

The heliostat is the first subsystem in a central ... report of the SSPS Central Receiver System.The heliostat field was designed and manufactured by the ... Corporation.The original field design consisted of 160...

Pierre Wattiez; Juan Ramos; Sevillana…

1986-01-01T23:59:59.000Z

487

Quantized Gravitational Field. II  

Science Journals Connector (OSTI)

A consistent formulation is given for the quantized gravitational field in interaction with integer spin fields. Lorentz transformation equivalence within a class of physically distinguished coordinate systems is verified.

Julian Schwinger

1963-11-01T23:59:59.000Z

488

Wavelengths and oscillator strengths of Xe II from the UVES spectra of four HgMn stars  

E-Print Network [OSTI]

In spite of large overabundances of Xe II observed in numerous mercury-manganese (HgMn) stars, Xe II oscillator strengths are only available for a very limited number of transitions. As a consequence, several unidentified lines in the spectra of HgMn stars could be due to Xe II. In addition, some predicted Xe II lines are redshifted by about 0.1 A from stellar unidentified lines, raising the question about the wavelength accuracy of the Xe II line data available in the literature. For these reasons we investigated the Xe II lines lying in the 3900-4521 A, 4769-7542 A, and 7660-8000 A spectral ranges of four well-studied HgMn stars. We compared the Xe II wavelengths listed in the NIST database with the position of the lines observed in the high-resolution UVES spectrum of the xenon-overabundant, slowly rotating HgMn stars HR 6000, and we modified them when needed. We derived astrophysical oscillator strengths for all the Xe II observed lines and compared them with the literature values, when available. In this...

Yüce, K; Hubrig, S

2011-01-01T23:59:59.000Z

489

Short-term energy outlook: Quarterly projections, second quarter 1997  

SciTech Connect (OSTI)

The Energy Information Administration (EIA) prepares quarterly short-term energy supply, demand, and price projections for publication in January, April, July, and October in the Outlook. The forecast period for this issue of the Outlook extends from the second quarter of 1997 through the fourth quarter of 1998. Values for the first quarter of 1997, however, are preliminary EIA estimates (for example, some monthly values for petroleum supply and disposition are derived in part from weekly data reported in EIA`s Weekly Petroleum Status Report) or are calculated from model simulations that use the latest exogenous information available (for example, electricity sales and generation are simulated by using actual weather data). The historical energy data, compiled in the second quarter 1997 version of the Short-Term Integrated Forecasting System (STIFS) database, are mostly EIA data regularly published in the Monthly Energy Review, Petroleum Supply Monthly, and other EIA publications. Minor discrepancies between the data in these publications and the historical data in this Outlook are due to independent rounding. The STIFS database is archived quarterly and is available from the National Technical Information Service. The STIFS model is driven principally by three sets of assumptions or inputs: estimates of key macroeconomic variables, world oil price assumptions, and assumptions about the severity of weather. Macroeconomic estimates are produced by DRI/McGraw-Hill but are adjusted by EIA to reflect EIA assumptions about the world price of crude oil, energy product prices, and other assumptions which may affect the macroeconomic outlook. By varying the assumptions, alternative cases are produced by using the Short-Term Integrated Forecasting System (STIFS). 34 figs., 19 tabs.

NONE

1997-04-01T23:59:59.000Z

490

Energy Information Administration/Short-Term Energy Outlook - January 2005  

Gasoline and Diesel Fuel Update (EIA)

January 2005 January 2005 1 Short-Term Energy Outlook January 2005 Winter Fuels Update (Figure 1) Consumer prices for heating fuels are relatively unchanged since the December Outlook, leaving projections for household heating fuel expenditures about the same as previously projected, despite continued warm weather in the middle of the heating season. Heating oil expenditures by typical Northeastern households are expected to average 30 percent above last winter's levels, with residential fuel oil prices averaging $1.82 per gallon for the October-to-March period. Expenditures for propane-heated households are expected to increase about 20 percent this winter.

491

Energy Information Administration/Short-Term Energy Outlook - February 2005  

Gasoline and Diesel Fuel Update (EIA)

February 2005 February 2005 1 Short-Term Energy Outlook February 2005 Winter Fuels Update (Figure 1) Despite some cold weather during the second half of January, expected average consumer prices for heating fuels this heating season are little changed since the January Outlook, leaving projections for household heating fuel expenditures about the same as previously reported. Heating oil expenditures by typical Northeastern households are expected to average 32 percent above last winter's levels, with residential fuel oil prices averaging $1.82 per gallon for the October-to-March period. Expenditures for propane-heated households are expected to increase about

492

Method and apparatus for logging short radius horizontal drainholes  

SciTech Connect (OSTI)

This patent describes an apparatus for use in logging a short radius horizontal drainhole. It comprises: a tubing string having a low portion; the lower portion of the tubing string including sensor support means therein; the lower portion of the tubing string containing openings communicating with the interior thereof in the vicinity of the sensor support means to thereby exposed the interior to the pressure and temperature conditions of the horizontal drainhole; and the lower portion of the tubing string including an end portion extending transversely of the tubing sting.

Taylor, D.E.

1991-04-30T23:59:59.000Z

493

Computing Three-Point Functions for Short Operators  

E-Print Network [OSTI]

We compute the three-point structure constants for short primary operators of N=4 super Yang-Mills theory to leading order in the inverse coupling by mapping the problem to a flat-space string theory calculation. We check the validity of our procedure by comparing to known results for three chiral primaries. We then compute the three-point functions for any combination of chiral and non-chiral primaries, with the non-chiral primaries all dual to string states at the first massive level. Along the way we find many cancellations that leave us with simple expressions, suggesting that integrability is playing an important role.

Till Bargheer; Joseph A. Minahan; Raul Pereira

2014-04-14T23:59:59.000Z

494

Laser trapping of short-lived radioactive isotopes  

Science Journals Connector (OSTI)

We describe an experiment which demonstrates the feasibility of trapping significant quantities of short-lived radioactive atoms with laser light. A thermal beam of 22.5 sec half-life Na21 atoms was produced on-line at the LBL 88’’ Cyclotron. After decelerating the beam using a Zeeman-tuned slowing technique we stored about 4×103 Na21 atoms in a magneto-optical trap. The number of trapped atoms is large enough to be used in experimental studies of the beta decay of Na21. The basic method can be adapted for other rare isotopes.

Z-T. Lu; C. Bowers; S. J. Freedman; B. K. Fujikawa; J. L. Mortara; S-Q. Shang; K. P. Coulter; L. Young

1994-06-13T23:59:59.000Z

495

Short History of Nuclear Many-Body Problem  

E-Print Network [OSTI]

This is a very short presentation regarding developments in the theory of nuclear many-body problems, as seen and experienced by the author during the past 60 years with particular emphasis on the contributions of Gerry Brown and his research-group. Much of his work was based on Brueckner's formulation of the nuclear many-body problem. It is reviewed briefly together with the Moszkowski-Scott separation method that was an important part of his early work. The core-polarisation and his work related to effective interactions in general are also addressed.

Köhler, H S

2014-01-01T23:59:59.000Z

496

Conditional Reliability Modeling of Short-term River Basin Management  

E-Print Network [OSTI]

CONDITIONAL RELIABILITY MODELING OF SHORT-TERM RIVER BASIN MANAGEMENT ASCE Texas Section Spring Meeting 2003 By: A.Andr?s Salazar, Ph.D. Freese and Nichols, Inc. and Ralph A. Wurbs, P.E., Ph.D. Texas A&M University 2 TEXAS WATER AVAILABITY MODEL...-88Year Storage (x 1000 ac-ft) Periods without shortage = 657 out of 672 (97.8%) What is the probability of satisfying demand when reservoir falls below 100,000 ac-ft? 9 CONDITIONAL RELIABILITY Statistical analysis of small sequences. Simulation 1...

Salazar, A.; Wurbs, R. A.

2003-01-01T23:59:59.000Z

497

BUFFERED WELL FIELD OUTLINES  

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

OIL & GAS FIELD OUTLINES FROM BUFFERED WELLS OIL & GAS FIELD OUTLINES FROM BUFFERED WELLS The VBA Code below builds oil & gas field boundary outlines (polygons) from buffered wells (points). Input well points layer must be a feature class (FC) with the following attributes: Field_name Buffer distance (can be unique for each well to represent reservoirs with different drainage radii) ...see figure below. Copy the code into a new module. Inputs: In ArcMap, data frame named "Task 1" Well FC as first layer (layer 0). Output: Polygon feature class in same GDB as the well points FC, with one polygon field record (may be multiple polygon rings) per field_name. Overlapping buffers for the same field name are dissolved and unioned (see figure below). Adds an attribute PCTFEDLAND which can be populated using the VBA

498

Intrinsic Magnetic Fields  

Science Journals Connector (OSTI)

Emission theory of electromagnetic fields.—(1) Intrinsic magnetic field. The intrinsic magnetic field of a point charge is defined as that portion of the field which cannot be annihilated by the Lorentz transformation. It is shown that the intrinsic field can be represented by lines of force carried by the same moving elements as carry the electric field, and a potential is given for it. (2) Frequency of emission of moving elements. A relation between the frequency of emission of moving elements and the number of lines of force to a tube is deduced on the assumption that the latter number is the same for the electric and magnetic fields and that each moving element marks the intersection of an electric and magnetic line of force.

Leigh Page

1923-08-01T23:59:59.000Z

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Impacts of Ecotourism on Short-Beaked Common Dolphins (Delphinus delphis) in Mercury Bay, New Zealand  

E-Print Network [OSTI]

Impacts of Ecotourism on Short-Beaked Common Dolphins (Delphinus delphis) in Mercury Bay, New on this species. Key Words: short-beaked common dolphins, Delphinus delphis, ecotourism, dolphin-watching, swim

500

Assessing the level of service for shipments originating or terminating on short line railroads  

E-Print Network [OSTI]

This thesis measures railroad freight trip time and trip time reliability for freight rail shipments involving short lines in 2006. It is based on an underlying MIT study commissioned by members of the short line railroading ...

Alpert, Steven M

2007-01-01T23:59:59.000Z