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1

Optical Design of VLS-PGM Soft X-Ray Beamline on Indus-2  

SciTech Connect

The optical design of a soft x-ray beamline on the bending magnet of Indus-2 synchrotron source is presented. A Varied Line Spacing Plane Grating Monochromator (VLS-PGM) was adopted with Hettrick type optics. The VLS-PGM consists of a spherical mirror and three interchangeable gratings of line densities 1200 l/mm, 400 l/mm and 150 l/mm to efficiently cover the energy region 50-1500 eV. The VLS groove parameters were obtained by minimizing defocus aberration, coma and spherical aberration. The overall performance of the beamline was estimated by detailed raytracing calculations. The beamline design, results of the raytracing calculations and the expected performances are presented.

Prasad, T. T.; Modi, M. H.; Lodha, G. S. [X-ray Optics Section, Indus Synchrotrons Ultilization Division, Raja Ramanna Centre for Advanced Technology, Indore (India)

2010-06-23T23:59:59.000Z

2

URANIUM MILL TAILINGS RADON FLUX CALCULATIONS  

E-Print Network (OSTI)

at the Piñon Ridge Property in western Montrose County, Colorado. The Piñon Ridge Mill includesURANIUM MILL TAILINGS RADON FLUX CALCULATIONS PI?ON RIDGE PROJECT MONTROSE COUNTY, COLORADO Submitted To: Energy Fuels Resources Corporation 44 Union Boulevard, Suite 600 Lakewood, Colorado 80228

3

AHR 3/16/06 Equilibrium Flux Surface Calculations  

E-Print Network (OSTI)

preserved, with no flattening in edge stochastic region. · Assume zero net current (00 = 0). #12;#12;2 AHR 31 AHR 3/16/06 Equilibrium Flux Surface Calculations for W7AS and NCSX A. Reiman1, M. Zarnstorff1, D resonant magnetic field near plasma edge. Coil calculated to have little effect on rotational transform

Hudson, Stuart

4

Calculation of low-energy atmospheric muon flux  

Science Journals Connector (OSTI)

We report the results of a three-dimensional Monte Carlo calculation of the low-energy atmospheric muon flux. They agree with the experiments by Allkofer et al. at sea level, but the agreement with the experiments by Conversi at a high altitude is not good, particularly at a very high altitude.

Haeshim Lee and Sidney A. Bludman

1988-11-01T23:59:59.000Z

5

Measurements and model calculations of radiative fluxes for the...  

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of radiative fluxes for the Cabauw Experimental Site for Atmospheric Research, the Netherlands Knap, Wouter Royal Netherlands Meteorological Institute KNMI Los, Alexander KNMI...

6

Calculations of Electronic Structure of Candidates for Magnetic Flux Pinning Centers in Oxide Superconductors  

Science Journals Connector (OSTI)

Cluster calculations using the molecular orbital method were performed ... for magnetic flux in copper oxide superconductors. Electronic structures were first investigated for interstitial helium ... (He cluster)...

Kimichika Fukushima

1995-01-01T23:59:59.000Z

7

A semi Monte Carlo calculation of the flux of high-energy muons in air showers  

Science Journals Connector (OSTI)

A semi Monte Carlo method has been used to calculate the flux of muons of energy ?180 GeV associated with air showers at ... of nucleon and pion interactions at ultra-high energies. Various aspects of these muons

Siddheshwar Lal

1967-03-21T23:59:59.000Z

8

Water and element fluxes calculated in a sandy forest soil taking spatial variability into account  

Science Journals Connector (OSTI)

Water and element fluxes in the unsaturated zone of soils are most often calculated on the basis of average water fluxes and average soil solution concentrations. However, if the input of water and elements exhibit a strong systematic variability, this will most likely be reflected in the flow of water and elements in the soil. In such cases the average based calculations will be subjected to significant errors. In order to overcome this problem, the present paper describes a method to calculate the water and element fluxes in the soil of a Norway spruce plantation taking into account the known stem-distance related variability in both water and element fluxes. The calculations are based on studies and previous findings of spatial variability in a Norway spruce plantation in Denmark. The suggested method leads to an improved Cl-balance when calculated for 6 years. The possible factors responsible for the errors in water and element fluxes are discussed and preferential flow paths, sampling under big trees, errors in modelling evapotranspiration and incorrect weighing between subareas are concluded to be most important.

Claus Beier

1998-01-01T23:59:59.000Z

9

Beamline 12.0.2  

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2 Print 2 Print Coherent science Scientific disciplines: Applied science, magnetism, materials science Endstations: 12.0.2.1: Coherent optics 12.0.2.2: Coherent x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics Third harmonic of 8-cm-period undulator (U8) Energy range 300-1500 eV Monochromator VLS-PGM, with two gratings (600 and 1200 lines/mm) Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 500 eV Resolving power (E/DE) 1,000 Beam size Focused: 70 x 10 µm Unfocused: 200 x 200 µm Endstations 12.0.2.1: Coherent optics 12.0.2.2: Coherent scattering Detectors DetectorsCCD, photodiode, scintillator Scientific applications Branchlines designed for spatially coherent soft x-ray experiments

10

Beamline 12.0.2  

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2 Print 2 Print Coherent science Scientific disciplines: Applied science, magnetism, materials science Endstations: 12.0.2.1: Coherent optics 12.0.2.2: Coherent x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics Third harmonic of 8-cm-period undulator (U8) Energy range 300-1500 eV Monochromator VLS-PGM, with two gratings (600 and 1200 lines/mm) Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 500 eV Resolving power (E/DE) 1,000 Beam size Focused: 70 x 10 µm Unfocused: 200 x 200 µm Endstations 12.0.2.1: Coherent optics 12.0.2.2: Coherent scattering Detectors DetectorsCCD, photodiode, scintillator Scientific applications Branchlines designed for spatially coherent soft x-ray experiments

11

Beamline 11.0.1  

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1 Print 1 Print PEEM3, Soft X-Ray Scattering Scientific disciplines: Magnetism, materials, surface science, polymers Endstations: 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics 5.0-cm period elliptical polarization undulator (EPU5) Energy range 150-2000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 800 eV Resolving power (E/ΔE) 4,000 at 800 eV Endstations 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering Special notes Polarization is user selectable; linear polarization continuously variable from horizontal to vertical; left and right elliptical (or circular) polarization

12

Beamline 12.0.2  

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0.2 Print 0.2 Print Coherent science Scientific disciplines: Applied science, magnetism, materials science Endstations: 12.0.2.1: Coherent optics 12.0.2.2: Coherent x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics Third harmonic of 8-cm-period undulator (U8) Energy range 300-1500 eV Monochromator VLS-PGM, with two gratings (600 and 1200 lines/mm) Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 500 eV Resolving power (E/DE) 1,000 Beam size Focused: 70 x 10 µm Unfocused: 200 x 200 µm Endstations 12.0.2.1: Coherent optics 12.0.2.2: Coherent scattering Detectors DetectorsCCD, photodiode, scintillator Scientific applications Branchlines designed for spatially coherent soft x-ray experiments

13

Beamline 12.0.2  

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2 Print 2 Print Coherent science Scientific disciplines: Applied science, magnetism, materials science Endstations: 12.0.2.1: Coherent optics 12.0.2.2: Coherent x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics Third harmonic of 8-cm-period undulator (U8) Energy range 300-1500 eV Monochromator VLS-PGM, with two gratings (600 and 1200 lines/mm) Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 500 eV Resolving power (E/DE) 1,000 Beam size Focused: 70 x 10 µm Unfocused: 200 x 200 µm Endstations 12.0.2.1: Coherent optics 12.0.2.2: Coherent scattering Detectors DetectorsCCD, photodiode, scintillator Scientific applications Branchlines designed for spatially coherent soft x-ray experiments

14

Beamline 11.0.1  

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1 Print 1 Print PEEM3, Soft X-Ray Scattering Scientific disciplines: Magnetism, materials, surface science, polymers Endstations: 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics 5.0-cm period elliptical polarization undulator (EPU5) Energy range 150-2000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 800 eV Resolving power (E/ΔE) 4,000 at 800 eV Endstations 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering Special notes Polarization is user selectable; linear polarization continuously variable from horizontal to vertical; left and right elliptical (or circular) polarization

15

Beamline 11.0.1  

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1 Print 1 Print PEEM3, Soft X-Ray Scattering Scientific disciplines: Magnetism, materials, surface science, polymers Endstations: 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics 5.0-cm period elliptical polarization undulator (EPU5) Energy range 150-2000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 800 eV Resolving power (E/ΔE) 4,000 at 800 eV Endstations 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering Special notes Polarization is user selectable; linear polarization continuously variable from horizontal to vertical; left and right elliptical (or circular) polarization

16

Beamline 11.0.1  

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1 Print 1 Print PEEM3, Soft X-Ray Scattering Scientific disciplines: Magnetism, materials, surface science, polymers Endstations: 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics 5.0-cm period elliptical polarization undulator (EPU5) Energy range 150-2000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 800 eV Resolving power (E/ΔE) 4,000 at 800 eV Endstations 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering Special notes Polarization is user selectable; linear polarization continuously variable from horizontal to vertical; left and right elliptical (or circular) polarization

17

Beamline 12.0.2  

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2 Print 2 Print Coherent science Scientific disciplines: Applied science, magnetism, materials science Endstations: 12.0.2.1: Coherent optics 12.0.2.2: Coherent x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics Third harmonic of 8-cm-period undulator (U8) Energy range 300-1500 eV Monochromator VLS-PGM, with two gratings (600 and 1200 lines/mm) Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 500 eV Resolving power (E/DE) 1,000 Beam size Focused: 70 x 10 µm Unfocused: 200 x 200 µm Endstations 12.0.2.1: Coherent optics 12.0.2.2: Coherent scattering Detectors DetectorsCCD, photodiode, scintillator Scientific applications Branchlines designed for spatially coherent soft x-ray experiments

18

Beamline 11.0.1  

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1 Print 1 Print PEEM3, Soft X-Ray Scattering Scientific disciplines: Magnetism, materials, surface science, polymers Endstations: 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics 5.0-cm period elliptical polarization undulator (EPU5) Energy range 150-2000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 800 eV Resolving power (E/ΔE) 4,000 at 800 eV Endstations 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering Special notes Polarization is user selectable; linear polarization continuously variable from horizontal to vertical; left and right elliptical (or circular) polarization

19

Beamline 11.0.1  

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1 Print 1 Print PEEM3, Soft X-Ray Scattering Scientific disciplines: Magnetism, materials, surface science, polymers Endstations: 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics 5.0-cm period elliptical polarization undulator (EPU5) Energy range 150-2000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 800 eV Resolving power (E/ΔE) 4,000 at 800 eV Endstations 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering Special notes Polarization is user selectable; linear polarization continuously variable from horizontal to vertical; left and right elliptical (or circular) polarization

20

Beamline 11.0.1  

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1 Print 1 Print PEEM3, Soft X-Ray Scattering Scientific disciplines: Magnetism, materials, surface science, polymers Endstations: 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics 5.0-cm period elliptical polarization undulator (EPU5) Energy range 150-2000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 800 eV Resolving power (E/ΔE) 4,000 at 800 eV Endstations 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering Special notes Polarization is user selectable; linear polarization continuously variable from horizontal to vertical; left and right elliptical (or circular) polarization

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

Beamline 11.0.1  

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

1 Print 1 Print PEEM3, Soft X-Ray Scattering Scientific disciplines: Magnetism, materials, surface science, polymers Endstations: 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics 5.0-cm period elliptical polarization undulator (EPU5) Energy range 150-2000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 800 eV Resolving power (E/ΔE) 4,000 at 800 eV Endstations 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering Special notes Polarization is user selectable; linear polarization continuously variable from horizontal to vertical; left and right elliptical (or circular) polarization

22

Beamline 11.0.1  

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0.1 Print 0.1 Print PEEM3, Soft X-Ray Scattering Scientific disciplines: Magnetism, materials, surface science, polymers Endstations: 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics 5.0-cm period elliptical polarization undulator (EPU5) Energy range 150-2000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 800 eV Resolving power (E/ΔE) 4,000 at 800 eV Endstations 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering Special notes Polarization is user selectable; linear polarization continuously variable from horizontal to vertical; left and right elliptical (or circular) polarization

23

Beamline 11.0.1  

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1 Print 1 Print PEEM3, Soft X-Ray Scattering Scientific disciplines: Magnetism, materials, surface science, polymers Endstations: 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics 5.0-cm period elliptical polarization undulator (EPU5) Energy range 150-2000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 800 eV Resolving power (E/ΔE) 4,000 at 800 eV Endstations 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering Special notes Polarization is user selectable; linear polarization continuously variable from horizontal to vertical; left and right elliptical (or circular) polarization

24

Beamline 12.0.2  

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2 Print 2 Print Coherent science Scientific disciplines: Applied science, magnetism, materials science Endstations: 12.0.2.1: Coherent optics 12.0.2.2: Coherent x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics Third harmonic of 8-cm-period undulator (U8) Energy range 300-1500 eV Monochromator VLS-PGM, with two gratings (600 and 1200 lines/mm) Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 500 eV Resolving power (E/DE) 1,000 Beam size Focused: 70 x 10 µm Unfocused: 200 x 200 µm Endstations 12.0.2.1: Coherent optics 12.0.2.2: Coherent scattering Detectors DetectorsCCD, photodiode, scintillator Scientific applications Branchlines designed for spatially coherent soft x-ray experiments

25

Beamline 12.0.2  

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2 Print 2 Print Coherent science Scientific disciplines: Applied science, magnetism, materials science Endstations: 12.0.2.1: Coherent optics 12.0.2.2: Coherent x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics Third harmonic of 8-cm-period undulator (U8) Energy range 300-1500 eV Monochromator VLS-PGM, with two gratings (600 and 1200 lines/mm) Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 500 eV Resolving power (E/DE) 1,000 Beam size Focused: 70 x 10 µm Unfocused: 200 x 200 µm Endstations 12.0.2.1: Coherent optics 12.0.2.2: Coherent scattering Detectors DetectorsCCD, photodiode, scintillator Scientific applications Branchlines designed for spatially coherent soft x-ray experiments

26

Beamline 11.0.1  

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1 Print 1 Print PEEM3, Soft X-Ray Scattering Scientific disciplines: Magnetism, materials, surface science, polymers Endstations: 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics 5.0-cm period elliptical polarization undulator (EPU5) Energy range 150-2000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 800 eV Resolving power (E/ΔE) 4,000 at 800 eV Endstations 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering Special notes Polarization is user selectable; linear polarization continuously variable from horizontal to vertical; left and right elliptical (or circular) polarization

27

Beamline 12.0.2  

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2.0.2 Print 2.0.2 Print Coherent science Scientific disciplines: Applied science, magnetism, materials science Endstations: 12.0.2.1: Coherent optics 12.0.2.2: Coherent x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics Third harmonic of 8-cm-period undulator (U8) Energy range 300-1500 eV Monochromator VLS-PGM, with two gratings (600 and 1200 lines/mm) Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 500 eV Resolving power (E/DE) 1,000 Beam size Focused: 70 x 10 µm Unfocused: 200 x 200 µm Endstations 12.0.2.1: Coherent optics 12.0.2.2: Coherent scattering Detectors DetectorsCCD, photodiode, scintillator Scientific applications Branchlines designed for spatially coherent soft x-ray experiments

28

The method of convergence to calculate particles fluxes in X rays spectrometry techniques. Application in nuclear compounds  

SciTech Connect

A method to calculate particle fluxes applicable in most of the spectroscopy techniques is described. Flux intensities of backscattered or absorbed electrons and emitted photons are calculated using a method of convergence to solve the invariant embedding equations that are used to describe the particle trajectories inside a solid sample. Our results are found to be helpful to carry out a procedure for quantitative characterization using instruments such as electron probe microanalyser or other probes. Examples of application to calculate the composition of ternary alloys are given and are compared with the same calculations using another procedure.

Figueroa, C.; Nieva, N.; Brizuela, H.; Heluani, S. P. [Laboratorio de Fisica del Solido, Dpto. de Fisica, Facultad de Ciencias Exactas y Tecnologia, Universidad Nacional de Tucuman (Argentina)

2012-12-01T23:59:59.000Z

29

Three-dimensional calculations of neutron streaming in the beam tubes of the ORNL HFIR (High Flux Isotope Reactor) Reactor  

SciTech Connect

The streaming of neutrons through the beam tubes in High Flux Isotope Reactor at Oak Ridge National Laboratory has resulted in a reduction of the fracture toughness of the reactor vessel. As a result, an evaluation of vessel integrity was undertaken in order to determine if the reactor can be operated again. As a part of this evaluation, three-dimensional neutron transport calculations were performed to obtain fluxes at points of interest in the wall of the vessel. By comparing the calculated and measured activation of dosimetry specimens from the vessel surveillance program, it was determined that the calculated flux shape was satisfactory to transpose the surveillance data to the locations in the vessel. A bias factor was applied to correct for the average C/E ratio of 0.69. 8 refs., 7 figs., 3 tabs.

Childs, R.L.; Rhoades, W.A.; Williams, L.R.

1988-01-01T23:59:59.000Z

30

Meson cascade in the atmosphere, uncertainties in calculating the fluxes of high-energy muons, and data of direct measurements  

Science Journals Connector (OSTI)

A new calculation of the atmospheric fluxes of cosmic-ray hadrons and muons in the energy range 10104...GeV is performed on the basis of the method for solving nuclear-cascade equations with allowance for a nons...

A. A. Kochanov; T. S. Sinegovskaya; S. I. Sinegovsky

2007-11-01T23:59:59.000Z

31

Flux  

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5000 5000 6000 7000 8000 Wavelength (Angstroms) Flux (in arbitrary units) SN 1990N SN 1989B SN 1993O SN 1981B SN 1994D SN 1997ap Iron Peak Blends Ca II Si II & Co II Fe II & III Day -7 Day -5 Day -4 Day -2 ± 2 Day 0 Day +2 * -50 0 50 100 150 Observed days from peak Observed I magnitude 27 26 25 24 23 Observed R magnitude 27 26 25 24 Observed I magnitude 27 26 25 24 23 R band Ground-based I band HST I band (b) (c) (a) Pre-SN observation 3.5 4.0 4.5 5.0 5.5 log(cz) 14 16 18 20 22 24 26 effective m B 0.02 0.05 0.1 0.2 0.5 1.0 redshift z Hamuy et al (A.J. 1996) Supernova Cosmology Project 6 8 % 9 0 % 0.5 1.0 1.5 2.0 2.5 3.0 ! M Age < 9.6 Gyr (H = 50 km s -1 Mpc -1 ) No Big Bang 0.0 0.5 1.0 1.5 2.0 2.5 3.0 -3 -2 -1 0 1 2 3 -3 -2 -1 0 1 2 3 ! " z ~ 0 . 4 z = 0 . 8 3 6 8 % 9 0 % 0.5 1.0 1.5 2.0 2.5 3.0 ! M Age < 9.6 Gyr (H=50 km/s/Mpc)

32

Development of Aerosol Models for Radiative Flux Calculations at ARM Sites: Utility of Trajectory Clustering for Characterizing Aerosol Climatology  

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

Development of Aerosol Models for Radiative Flux Development of Aerosol Models for Radiative Flux Calculations at ARM Sites: Utility of Trajectory Clustering for Characterizing Aerosol Climatology E. Andrews Cooperative Institute for Research in the Environment University of Colorado Boulder, Colorado E. Andrews, J. A. Ogren, P. J. Sheridan, and J. M. Harris Climate Monitoring and Diagnostics Laboratory National Oceanic and Atmospheric Administration Boulder, Colorado P. K. Quinn Pacific Marine Environmental Laboratory National Oceanic and Atmospheric Administration Seattle, Washington Abstract The uncertainties associated with assumptions of generic aerosol properties in radiative transfer codes are unknown, which means that these uncertainties are frequently invoked when models and

33

On the direct calculation of thermal rate constants. II. The flux-flux autocorrelation function with absorbing potentials, with application to the O+HCl?OH+Cl reaction  

E-Print Network (OSTI)

of the trace in Eq. ~1.1b! is itself of low rank, but it is not possible to exploit this as was done in Part I for Cfs(t), because here we need Cf f(t) for a range of t while in Part I we needed Cfs(t) only for one ~large! value of t .! For this purpose... step of the calculation is therefore to find the eigenfunctions of the Boltzmannized flux operator, F (b) of Eq. ~2.1b!, that have the largest ~in absolute value! eigenval- ues, and the Lanczos algorithm26 is ideal for this purpose. Starting...

Thompson, Ward H.; Miller, William H.

1997-01-01T23:59:59.000Z

34

Generalized matrix method for calculation of internal light energy flux in mixed coherent and incoherent multilayers  

Science Journals Connector (OSTI)

A generalized matrix method to treat multilayer systems with mixed coherent and incoherent optical behavior is presented. The method is based on the calculation of the light energy...

Centurioni, Emanuele

2005-01-01T23:59:59.000Z

35

On the deficit of calculated muon flux at sea level for energies $>100$ GeV  

E-Print Network (OSTI)

In this paper we discuss the problem, why the use of the direct data on primary nuclei spectra together with the modern hadronic interaction models leads to significant deficit of computed vertical muon flux at sea level for energies $>100$ GeV. We suggest, that to find out the source of this inconsistency it is necessary to perform an analysis of sensitivity of emulsion chamber data to variations of hadron-nucleus interaction characteristics. Such analysis will give more ground for discussion of adequacy of the up-to-date interaction models and of mutual compatibility of primary nuclei spectra, obtained in direct and EAS experiments.

A. A. Lagutin; A. G. Tyumentsev; A. V. Yushkov

2005-03-04T23:59:59.000Z

36

Three-dimensional discrete ordinates radiation transport calculations of neutron fluxes for beginning-of-cycle at several pressure vessel surveillance positions in the high flux isotope reactor  

SciTech Connect

The objective of this research was to determine improved thermal, epithermal, and fast fluxes and several responses at mechanical test surveillance location keys 2, 4, 5, and 7 of the pressure vessel of the Oak Ridge National Laboratory High Flux Isotope Reactor (HFIR) for the beginning of the fuel cycle. The purpose of the research was to provide essential flux data in support of radiation embrittlement studies of the pressure vessel shell and beam tubes at some of the important locations.

Pace, J.V. III; Slater, C.O.; Smith, M.S.

1993-11-01T23:59:59.000Z

37

Beamline 11.3.2  

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

1.3.2 Print 1.3.2 Print Inspection of EUV lithography masks GENERAL BEAMLINE INFORMATION Operational Yes, but not open to users Source characteristics Bend magnet Energy range 50-1000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1011 photons/s/0.01%BW at 100 eV Resolving power (E/ΔE) 7000 Endstations The SEMATECH Berkeley Actinic Inspection Tool Detector 2048 x 2048 EUV CCD Characteristics 900-1000x zoneplate microscope Spot size at sample 1-5 microns Spatial resolution 60 nm Sample format EUV Photolithography masks: 6" glass plate, multilayer coated for normal incidence reflectivity at 13.4 nm Sample preparation Cleanroom handling Sample environment 2.0 x 10-7 Torr base pressure Scientific applications EUV lithography Local contacts/ Spokespersons This e-mail address is being protected from spambots. You need JavaScript enabled to view it

38

Beamline 12.0.2  

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

0.2 0.2 Beamline 12.0.2 Print Tuesday, 20 October 2009 09:30 Coherent science Scientific disciplines: Applied science, magnetism, materials science Endstations: 12.0.2.1: Coherent optics 12.0.2.2: Coherent x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics Third harmonic of 8-cm-period undulator (U8) Energy range 300-1500 eV Monochromator VLS-PGM, with two gratings (600 and 1200 lines/mm) Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 500 eV Resolving power (E/DE) 1,000 Beam size Focused: 70 x 10 µm Unfocused: 200 x 200 µm Endstations 12.0.2.1: Coherent optics 12.0.2.2: Coherent scattering Detectors DetectorsCCD, photodiode, scintillator Scientific applications Branchlines designed for spatially coherent soft x-ray experiments

39

Beamline 11.3.2  

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

1.3.2 Print 1.3.2 Print Inspection of EUV lithography masks GENERAL BEAMLINE INFORMATION Operational Yes, but not open to users Source characteristics Bend magnet Energy range 50-1000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1011 photons/s/0.01%BW at 100 eV Resolving power (E/ΔE) 7000 Endstations The SEMATECH Berkeley Actinic Inspection Tool Detector 2048 x 2048 EUV CCD Characteristics 900-1000x zoneplate microscope Spot size at sample 1-5 microns Spatial resolution 60 nm Sample format EUV Photolithography masks: 6" glass plate, multilayer coated for normal incidence reflectivity at 13.4 nm Sample preparation Cleanroom handling Sample environment 2.0 x 10-7 Torr base pressure Scientific applications EUV lithography Local contacts/ Spokespersons This e-mail address is being protected from spambots. You need JavaScript enabled to view it

40

Beamline 11.3.2  

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

1.3.2 Print 1.3.2 Print Inspection of EUV lithography masks GENERAL BEAMLINE INFORMATION Operational Yes, but not open to users Source characteristics Bend magnet Energy range 50-1000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1011 photons/s/0.01%BW at 100 eV Resolving power (E/ΔE) 7000 Endstations The SEMATECH Berkeley Actinic Inspection Tool Detector 2048 x 2048 EUV CCD Characteristics 900-1000x zoneplate microscope Spot size at sample 1-5 microns Spatial resolution 60 nm Sample format EUV Photolithography masks: 6" glass plate, multilayer coated for normal incidence reflectivity at 13.4 nm Sample preparation Cleanroom handling Sample environment 2.0 x 10-7 Torr base pressure Scientific applications EUV lithography Local contacts/ Spokespersons This e-mail address is being protected from spambots. You need JavaScript enabled to view it

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

Beamline 11.3.2  

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

1.3.2 Print 1.3.2 Print Inspection of EUV lithography masks GENERAL BEAMLINE INFORMATION Operational Yes, but not open to users Source characteristics Bend magnet Energy range 50-1000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1011 photons/s/0.01%BW at 100 eV Resolving power (E/ΔE) 7000 Endstations The SEMATECH Berkeley Actinic Inspection Tool Detector 2048 x 2048 EUV CCD Characteristics 900-1000x zoneplate microscope Spot size at sample 1-5 microns Spatial resolution 60 nm Sample format EUV Photolithography masks: 6" glass plate, multilayer coated for normal incidence reflectivity at 13.4 nm Sample preparation Cleanroom handling Sample environment 2.0 x 10-7 Torr base pressure Scientific applications EUV lithography Local contacts/ Spokespersons This e-mail address is being protected from spambots. You need JavaScript enabled to view it

42

Beamline 11.3.2  

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

1.3.2 Print 1.3.2 Print Inspection of EUV lithography masks GENERAL BEAMLINE INFORMATION Operational Yes, but not open to users Source characteristics Bend magnet Energy range 50-1000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1011 photons/s/0.01%BW at 100 eV Resolving power (E/ΔE) 7000 Endstations The SEMATECH Berkeley Actinic Inspection Tool Detector 2048 x 2048 EUV CCD Characteristics 900-1000x zoneplate microscope Spot size at sample 1-5 microns Spatial resolution 60 nm Sample format EUV Photolithography masks: 6" glass plate, multilayer coated for normal incidence reflectivity at 13.4 nm Sample preparation Cleanroom handling Sample environment 2.0 x 10-7 Torr base pressure Scientific applications EUV lithography Local contacts/ Spokespersons This e-mail address is being protected from spambots. You need JavaScript enabled to view it

43

Beamline 11.3.2  

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

1.3.2 Print 1.3.2 Print Inspection of EUV lithography masks GENERAL BEAMLINE INFORMATION Operational Yes, but not open to users Source characteristics Bend magnet Energy range 50-1000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1011 photons/s/0.01%BW at 100 eV Resolving power (E/ΔE) 7000 Endstations The SEMATECH Berkeley Actinic Inspection Tool Detector 2048 x 2048 EUV CCD Characteristics 900-1000x zoneplate microscope Spot size at sample 1-5 microns Spatial resolution 60 nm Sample format EUV Photolithography masks: 6" glass plate, multilayer coated for normal incidence reflectivity at 13.4 nm Sample preparation Cleanroom handling Sample environment 2.0 x 10-7 Torr base pressure Scientific applications EUV lithography Local contacts/ Spokespersons This e-mail address is being protected from spambots. You need JavaScript enabled to view it

44

Beamline 11.3.2  

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

1.3.2 Print 1.3.2 Print Inspection of EUV lithography masks GENERAL BEAMLINE INFORMATION Operational Yes, but not open to users Source characteristics Bend magnet Energy range 50-1000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1011 photons/s/0.01%BW at 100 eV Resolving power (E/ΔE) 7000 Endstations The SEMATECH Berkeley Actinic Inspection Tool Detector 2048 x 2048 EUV CCD Characteristics 900-1000x zoneplate microscope Spot size at sample 1-5 microns Spatial resolution 60 nm Sample format EUV Photolithography masks: 6" glass plate, multilayer coated for normal incidence reflectivity at 13.4 nm Sample preparation Cleanroom handling Sample environment 2.0 x 10-7 Torr base pressure Scientific applications EUV lithography Local contacts/ Spokespersons This e-mail address is being protected from spambots. You need JavaScript enabled to view it

45

Beamline 11.3.2  

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

1.3.2 Print 1.3.2 Print Inspection of EUV lithography masks GENERAL BEAMLINE INFORMATION Operational Yes, but not open to users Source characteristics Bend magnet Energy range 50-1000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1011 photons/s/0.01%BW at 100 eV Resolving power (E/ΔE) 7000 Endstations The SEMATECH Berkeley Actinic Inspection Tool Detector 2048 x 2048 EUV CCD Characteristics 900-1000x zoneplate microscope Spot size at sample 1-5 microns Spatial resolution 60 nm Sample format EUV Photolithography masks: 6" glass plate, multilayer coated for normal incidence reflectivity at 13.4 nm Sample preparation Cleanroom handling Sample environment 2.0 x 10-7 Torr base pressure Scientific applications EUV lithography Local contacts/ Spokespersons This e-mail address is being protected from spambots. You need JavaScript enabled to view it

46

Beamline 11.0.1  

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

1 1 Beamline 11.0.1 Print Tuesday, 20 October 2009 09:16 PEEM3, Soft X-Ray Scattering Scientific disciplines: Magnetism, materials, surface science, polymers Endstations: 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering GENERAL BEAMLINE INFORMATION Operational Yes Proposal cycle Proposals for General Sciences Beamlines (6-month cycle) Source characteristics 5.0-cm period elliptical polarization undulator (EPU5) Energy range 150-2000 eV Monochromator VLS-PGM Calculated flux (1.9 GeV, 400 mA) 1013 photons/s/0.1%BW at 800 eV Resolving power (E/ΔE) 4,000 at 800 eV Endstations 11.0.1.1: Photoemission electron microscope (PEEM3) 11.0.1.2: Soft x-ray scattering Special notes Polarization is user selectable; linear polarization continuously variable from horizontal to vertical; left and right elliptical (or circular) polarization

47

Calculated and measured gas formation in beryllium samples irradiated in the high flux materials testing reactor BR2  

SciTech Connect

Beryllium samples have been irradiated in BR2, the materials testing reactor of the Nuclear Research Centre SCK/CEN at Mol, Belgium, up to fission fluence values of 5.2 10{sup 22} n/cm{sup 2} at low temperature. The gas formation (helium, tritium), as measured by SCK/CEN, as well as the induced swelling of the beryllium samples and the enhancement of the swelling due to annealing have been presented at the 17th SOFT Conference (Rome, 14--18 Sept., 1992). Since this conference, helium measurements on the same samples have been carried out at RI and calculations of the gas production have been performed, taking into account the various formation schemes. The experimental results from SCK/CEN and from RI are compared with the calculated gas formations.

De Raedt, C.M.; Sannen, L.F.; Vanmechelen, P.J. [SCK/CEN, Mol (Belgium); Oliver, B.M. [Rockwell International Corp., Canoga Park, CA (United States). Rocketdyne Div.

1994-12-31T23:59:59.000Z

48

Heat Flux Calculation and Problem of Flaking of Boron Carbide Coatings on the Faraday Screen of the ICRH Antennas During Tore Supra High Power, Long Pulse Operation  

SciTech Connect

Reliable and repetitive high power and long pulse tokamak operation is strongly dependant of the ability to secure the Plasma Facing Components (PFCs). In Tore Supra, a network of 7 infrared (IR) video cameras is routinely used to prevent PFCs overheating and damage in selected regions. Real time feedback control and offline analysis are essential for basic protection and understanding of abnormal thermal events. One important limitation detected by the IR real time feed-back loop during high power RF operation (injected power of 9.5 MW over 26 s and 12 MW over 10 s have been achieved respectively in 2006 and 2008) is due to the interaction between fast ions which increase the power flux density and flaking of the boron carbide coatings on the Faraday screen box of the ICRH antennas. An IR-based experimental procedure is proposed in order to detect new flakes during plasma operation. The thermal response of the B4C coating is studied with and without flaking during plasma operation. The experimental heat flux deposited by fast ion losses on the Faraday screen is calculated for high (3.8 T) and low magnetic field (2 T) during high RF power operation (with fundamental hydrogen minority and second harmonic ICRH heating schemes respectively). The paper addresses both thermal science issues applied to machine protection and limitation due to fast ions issues during high RF power, long pulse operation. Safety margin to critical heat flux and number of fatigue cycles under heat load are presented in the paper.

Corre, Y. [French Atomic Energy Commission (CEA), Cadarache, St. Paul lez Durance] [French Atomic Energy Commission (CEA), Cadarache, St. Paul lez Durance; Lipa, M. [CEA IRFM, St. Paul-lez-Durance, France] [CEA IRFM, St. Paul-lez-Durance, France; Agarici, G. [Fusion for Energy (F4E), Barcelona, Spain] [Fusion for Energy (F4E), Barcelona, Spain; Basiuk, V. [CEA IRFM, St. Paul-lez-Durance, France] [CEA IRFM, St. Paul-lez-Durance, France; Colas, L. [French Atomic Energy Commission (CEA)] [French Atomic Energy Commission (CEA); Courtois, X. [CEA, St. Paul Les Durance, France] [CEA, St. Paul Les Durance, France; Dumont, R. J. [French Atomic Energy Commission (CEA), Cadarache, St. Paul lez Durance] [French Atomic Energy Commission (CEA), Cadarache, St. Paul lez Durance; Ekedahl, A. [French Atomic Energy Commission (CEA), Institute for Magnetic Fusion Research (IRFM)] [French Atomic Energy Commission (CEA), Institute for Magnetic Fusion Research (IRFM); Gardarein, J. L. [University of Aix, Marseille, France] [University of Aix, Marseille, France; Klepper, C Christopher [ORNL] [ORNL; Martin, V. [French Atomic Energy Commission (CEA), Institute for Magnetic Fusion Research (IRFM)] [French Atomic Energy Commission (CEA), Institute for Magnetic Fusion Research (IRFM); Moncada, V. [CEA, St. Paul Les Durance, France] [CEA, St. Paul Les Durance, France; Portafaix, C. [CEA, St. Paul Les Durance, France] [CEA, St. Paul Les Durance, France; Rigollet, F. [University of Aix, Marseille, France] [University of Aix, Marseille, France; Tawizgant, R. [CEA, St. Paul Les Durance, France] [CEA, St. Paul Les Durance, France; Travere, J. M. [CEA, St. Paul Les Durance, France] [CEA, St. Paul Les Durance, France; Valliez, K. [CEA, St. Paul Les Durance, France] [CEA, St. Paul Les Durance, France

2011-01-01T23:59:59.000Z

49

Atmospheric Neutrino Fluxes  

E-Print Network (OSTI)

Starting with an historical review, I summarize the status of calculations of the flux of atmospheric neutrinos and how they compare to measurements.

Thomas K. Gaisser

2005-02-18T23:59:59.000Z

50

Thermal neutron flux contours from criticality event  

SciTech Connect

The generation of thermal neutron flux contours from a criticality event is demonstrated for an idealized building with a criticality event in one of the rooms. The MCNP Monte Carlo computer code is used to calculate the thermal neutron flux.

Carter, L.L., Westinghouse Hanford

1996-08-01T23:59:59.000Z

51

Today's Material Gauss' Law and Flux  

E-Print Network (OSTI)

by the contents of the box, the box must contain zero net electric charge. Slide 27-31 #12;Gauss' Law and Flux: · The Concept of Flux · Calculating Electric Flux · Symmetry · Gauss's Law · Using Gauss's Law · Conductors that the box must contain net positive electric charge. Slide 27-29 #12;© 2013 Pearson Education, Inc

Ashlock, Dan

52

Easier way to calculate E fields Equivalent to Coulomb's law  

E-Print Network (OSTI)

lines enter as leave closed surface the net is zero = ·= dAE AdE cos rr #12;Flux Calculate fluxGauss' Law Easier way to calculate E fields ­ Gauss' Law Equivalent to Coulomb's law Use ·= AE rr Let A become small so flux becomes integral over Gaussian surface Flux is proportional to net

Bertulani, Carlos A. - Department of Physics and Astronomy, Texas A&M University

53

Fast flux locked loop  

DOE Patents (OSTI)

A flux locked loop for providing an electrical feedback signal, the flux locked loop employing radio-frequency components and technology to extend the flux modulation frequency and tracking loop bandwidth. The flux locked loop of the present invention has particularly useful application in read-out electronics for DC SQUID magnetic measurement systems, in which case the electrical signal output by the flux locked loop represents an unknown magnetic flux applied to the DC SQUID.

Ganther, Jr., Kenneth R. (Olathe, KS); Snapp, Lowell D. (Independence, MO)

2002-09-10T23:59:59.000Z

54

Horizontal internal-tide fluxes supportelevated phytoplankton productivity overthe inner continental shelf  

E-Print Network (OSTI)

2005. Estimating internal wave energy fluxes in the ocean.fluxes of internal-wave energy (Kunze et al. 2002; Nash etvariability to internal-wave energy-flux calculations). [21

Lucas, Andrew

2014-01-01T23:59:59.000Z

55

Pulse flux measuring device  

DOE Patents (OSTI)

A device for measuring particle flux comprises first and second photodiode detectors for receiving flux from a source and first and second outputs for producing first and second signals representing the flux incident to the detectors. The device is capable of reducing the first output signal by a portion of the second output signal, thereby enhancing the accuracy of the device. Devices in accordance with the invention may measure distinct components of flux from a single source or fluxes from several sources.

Riggan, William C. (Albuquerque, NM)

1985-01-01T23:59:59.000Z

56

Spherical Target Temperature by Extended CFAST Calculation  

SciTech Connect

The purpose of this calculation is to evaluate the temperature at the surface of a spherical target made of polyethylene during a room fire. The current calculation is separated into 2 steps: (1) CFAST code calculation--Calculate the air temperature; radiation flux to the target from the fire, surrounding air, and walls; convection flux; and target temperature. (2) Extended model calculation--Calculate the temperature of the target sphere taking into account the density, heat capacity, heat conductivity, and the spherical geometry of the target by solving the coupled finite difference equations. The second step calculation utilizes the air temperature and radiation flux determined by the CFAST code calculation in the first step.

Ma, C W

2009-05-05T23:59:59.000Z

57

Nonlocal fluxes at a plasma sheath  

SciTech Connect

The particle and energy fluxes of electrons at the boundary of a plasma in contact with a perfectly absorbing plate are considered. In general, the fluxes are shown not to be determined by the plasma temperature and density at the plate but rather by a convolution of the plasma profiles in the vicinity of the plate. A simple empirical expression is proposed for the nonlocal fluxes, which approximately reproduces the results of a full kinetic calculation. The implications of this, to divertor plasmas near the neutralizer plate, are discussed.

Marchand, R.; Abou-Assaleh, Z.; Matte, J.P. (INRS-Energie, C. P. 1020, Varennes, Quebec, J3X 1S2, Canada (CA))

1990-06-01T23:59:59.000Z

58

Solar Glare and Flux Mapping  

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

SGFMT Home SGFMT Home Register Glare Analysis Solar Glare Hazard Analysis SGHAT 1.0 (old) Empirical Glare Analysis Analytical Glare Analysis PHLUX Mapping Reflectivity Calculator References Contact Us Solar Glare and Flux Mapping Tools Measurement of reflected solar irradiance is receiving significant attention by industry, military, and government agencies to assess potential impacts of glint and glare from growing numbers of solar power installations around the world. In addition, characterization of the incident solar flux distribution on central receivers for concentrating solar power applications is important to monitor and maintain system performance. This website contains tools to evaluate solar glare and receiver irradiance. Register to access the tools Solar Glare Hazard Analysis Tool

59

Sediment-water fluxes of mercury in Lavaca Bay, Texas  

SciTech Connect

The aqueous flux of inorganic Hg and monomethyl Hg from sediments to the water column was determined at several sites in Lavaca Bay, an estuary along the Texas Coast, historically impacted by Hg discharges. Diffusive fluxes were calculated at 15 sites using interstitial pore water gradients and compared to direct flux measurements obtained at two sites using benthic flux chambers. The diffusive flux of monomethyl mercury (MMHg), when modeled as a chloride species, varied over 3 orders /of magnitude from 0.2 to 1500 ng m{sup {minus}2} day{sup {minus}1}. Diffusive fluxes determined at a single site revealed that MMHg fluxes varied seasonally; maximal fluxes occurred in late winter to early spring. Flux chamber deployments at an impacted site revealed t hat MMHg was the Hg species entering the water column from sediments and the flux was not in steady-state; there was a strong diurnal signal with most of the MMHg flux occurring during dark periods. The flux of inorganic Hg was smaller and not as easily discernible by this method. The MMHg flux during the dark period was about 6 times greater than the estimated diffusional flux for MMHgCl, suggesting that biological and/or chemical processes near the sediment-water interface were strongly mediating the sediment-water exchange of MMHg.

Gill, G.A. [Texas A and M Univ., Galveston, TX (United States)] [Texas A and M Univ., Galveston, TX (United States); Bloom, N.S. [Frontier Geosciences Inc., Seattle, WA (United States)] [Frontier Geosciences Inc., Seattle, WA (United States); Cappellino, S. [Parametrix, Inc., Houston, TX (United States)] [Parametrix, Inc., Houston, TX (United States); Driscoll, C.T. [Syracuse Univ., NY (United States). Dept. of Civil and Environmental Engineering] [Syracuse Univ., NY (United States). Dept. of Civil and Environmental Engineering; Dobbs, C.; McShea, L. [Aluminum Co. of America, Point Comfort, TX (United States)] [Aluminum Co. of America, Point Comfort, TX (United States); Mason, R. [Univ. of Maryland, Solomons, MD (United States). Chesapeake Biological Lab.] [Univ. of Maryland, Solomons, MD (United States). Chesapeake Biological Lab.; Rudd, J.W.M. [Dept. of Fisheries and Oceans, Winnipeg, Manitoba (Canada). Freshwater Inst.] [Dept. of Fisheries and Oceans, Winnipeg, Manitoba (Canada). Freshwater Inst.

1999-03-01T23:59:59.000Z

60

Muon Fluxes From Dark Matter Annihilation  

E-Print Network (OSTI)

We calculate the muon flux from annihilation of the dark matter in the core of the Sun, in the core of the Earth and from cosmic diffuse neutrinos produced in dark matter annihilation in the halos. We consider model-independent direct neutrino production and secondary neutrino production from the decay of taus produced in the annihilation of dark matter. We illustrate how muon energy distribution from dark matter annihilation has a very different shape than muon flux from atmospheric neutrinos. We consider both the upward muon flux, when muons are created in the rock below the detector, and the contained flux when muons are created in the (ice) detector. We contrast our results to the ones previously obtained in the literature, illustrating the importance of properly treating muon propagation and energy loss. We comment on neutrino flavor dependence and their detection.

Arif Emre Erkoca; Mary Hall Reno; Ina Sarcevic

2009-06-23T23:59:59.000Z

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

Muon Flux at the Geographical South Pole  

E-Print Network (OSTI)

The muon flux at the South-Pole was measured for five zenith angles, $0^{\\circ}$, $15^{\\circ}$, $35^{\\circ}$, $82.13^{\\circ}$ and $85.15^{\\circ}$ with a scintillator muon telescope incorporating ice Cherenkov tank detectors as the absorber. We compare the measurements with other data and with calculations.

X. Bai; T. K. Gaisser; A. Karle; K. Rawlins; G. M. Spiczak; Todor Stanev

2006-02-17T23:59:59.000Z

62

Solar Magnetic Flux Ropes  

E-Print Network (OSTI)

The most probable initial magnetic configuration of a CME is a flux rope consisting of twisted field lines which fill the whole volume of a dark coronal cavity. The flux ropes can be in stable equilibrium in the coronal magnetic field for weeks and even months, but suddenly they loose their stability and erupt with high speed. Their transition to the unstable phase depends on the parameters of the flux rope (i.e., total electric current, twist, mass loading etc.), as well as on the properties of the ambient coronal magnetic field. One of the major governing factors is the vertical gradient of the coronal magnetic field which is estimated as decay index (n). Cold dense prominence material can be collected in the lower parts of the helical flux tubes. Filaments are therefore good tracers of the flux ropes in the corona, which become visible long before the beginning of the eruption. The perspectives of the filament eruptions and following CMEs can be estimated by the comparison of observed filament heights with...

Filippov, Boris; Srivastava, Abhishek K; Uddin, Wahab

2015-01-01T23:59:59.000Z

63

Optical heat flux gauge  

DOE Patents (OSTI)

A heat flux gauge comprising first and second thermographic phosphor layers separated by a layer of a thermal insulator. The gauge may be mounted on a surface with the first thermographic phosphor in contact with the surface. A light source is directed at the gauge, causing the phosphors to luminesce. The luminescence produced by the phosphors is collected and its spectra analyzed in order to determine the heat flux on the surface. First and second phosphor layers must be different materials to assure that the spectral lines collected will be distinguishable.

Noel, Bruce W. (Espanola, NM); Borella, Henry M. (Santa Barbara, CA); Cates, Michael R. (Oak Ridge, TN); Turley, W. Dale (Santa Barbara, CA); MaCarthur, Charles D. (Clayton, OH); Cala, Gregory C. (Dayton, OH)

1991-01-01T23:59:59.000Z

64

Optical heat flux gauge  

DOE Patents (OSTI)

A heat flux gauge comprising first and second thermographic phosphor layers separated by a layer of a thermal insulator wherein each thermographic layer comprises a plurality of respective thermographic phosphors. The gauge may be mounted on a surface with the first thermographic phosphor in contact with the surface. A light source is directed at the gauge, causing the phosphors to luminesce. The luminescence produced by the phosphors is collected and its spectra analyzed in order to determine the heat flux on the surface. First and second phosphor layers must be different materials to assure that the spectral lines collected will be distinguishable.

Noel, Bruce W. (Espanola, NM); Borella, Henry M. (Santa Barbara, CA); Cates, Michael R. (Oak Ridge, TN); Turley, W. Dale (Santa Barbara, CA); MacArthur, Charles D. (Clayton, OH); Cala, Gregory C. (Dayton, OH)

1991-01-01T23:59:59.000Z

65

Optical heat flux gauge  

DOE Patents (OSTI)

A heat flux gauge comprising first and second thermographic phosphor layers separated by a layer of a thermal insulator, wherein each thermographic layer comprises a plurality of respective thermographic sensors in a juxtaposed relationship with respect to each other. The gauge may be mounted on a surface with the first thermographic phosphor in contact with the surface. A light source is directed at the gauge, causing the phosphors to luminesce. The luminescence produced by the phosphors is collected and its spectra analyzed in order to determine the heat flux on the surface. First and second phosphor layers must be different materials to assure that the spectral lines collected will be distinguishable.

Noel, Bruce W. (Espanola, NM); Borella, Henry M. (Santa Barbara, CA); Cates, Michael R. (Oak Ridge, TN); Turley, W. Dale (Santa Barbara, CA); MacArthur, Charles D. (Clayton, OH); Cala, Gregory C. (Dayton, OH)

1991-01-01T23:59:59.000Z

66

Atmospheric State, Cloud Microphysics and Radiative Flux  

DOE Data Explorer (OSTI)

Atmospheric thermodynamics, cloud properties, radiative fluxes and radiative heating rates for the ARM Southern Great Plains (SGP) site. The data represent a characterization of the physical state of the atmospheric column compiled on a five-minute temporal and 90m vertical grid. Sources for this information include raw measurements, cloud property and radiative retrievals, retrievals and derived variables from other third-party sources, and radiative calculations using the derived quantities.

Mace, Gerald

67

ARM Energy Balance Bowen Ratio (EBBR) station: surf. heat flux and related data, 30-min  

DOE Data Explorer (OSTI)

The Energy Balance Bowen Ratio (EBBR) system produces 30-min estimates of the vertical fluxes of sensible and latent heat at the local surface. Flux estimates are calculated from observations of net radiation, soil surface heat flux, and the vertical gradients of temperature and relative humidity. Meteorological data collected by the EBBR are used to calculate bulk aerodynamic fluxes, which are used in the Bulk Aerodynamic Technique (BA) EBBR value-added product (VAP) to replace sunrise and sunset spikes in the flux data. A unique aspect of the system is the automatic exchange mechanism (AEM), which helps to reduce errors from instrument offset drift.

Cook, David

68

Design of a flux buffer based on the flux shuttle  

SciTech Connect

This paper discusses the design considerations for a flux buffer based on the flux-shuttle concept. Particular attention is given to the issues of flux popping, stability of operation and saturation levels for a large input. Modulation techniques used in order to minimize 1/f noise, in addition to offsets are also analyzed. Advantages over conventional approaches using a SQUID for a flux buffer are discussed. Results of computer simulations are presented.

Gershenson, M. (Naval Coastal Systems Lab., Panama City, FL (United States))

1991-03-01T23:59:59.000Z

69

Analytic flux formulas and tables of shielding functions  

SciTech Connect

Hand calculations of radiation flux and dose rates are often useful in evaluating radiation shielding and in determining the scope of a problem. The flux formulas appropriate to such calculations are almost always based on the point kernel and allow for at most the consideration of laminar slab shields. These formulas often require access to tables of values of integral functions for effective use. Flux formulas and function tables appropriate to calculations involving homogeneous source regions with the shapes of lines, disks, slabs, truncated cones, cylinders, and spheres are presented. Slab shields may be included in most of these calculations, and the effect of a cylindrical shield surrounding a cylindrical source may be estimated. Detector points may be located axially, laterally, or interior to a cylindrical source. Line sources may be tilted with respect to a slab shield. All function tables are given for a wide range of arguments.

Wallace, O.J.

1981-06-01T23:59:59.000Z

70

High flux compact neutron generators  

E-Print Network (OSTI)

High Flux Compact Neutron Generators J. Reijonen ,1 , T-Compact high flux neutron generators are developed at thevoltage feed through of the generator is shown in Fig. 4.

Reijonen, J.; Lou, T.-P.; Tolmachoff, B.; Leung, K.-N.; Verbeke, J.; Vujic, J.

2001-01-01T23:59:59.000Z

71

Flux, Volume 1, Issue 1  

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

&24; Table of Contents flux a publication of the national high magnetic field laboratory PG. 3 ... What is Flux? An introduction to our new publication. PG. 4 ... How Magnet...

72

MA 16020 -- CALCULATOR POLICY  

E-Print Network (OSTI)

MA 16020 -- CALCULATOR POLICY. A ONE-LINE scientific calculator is REQUIRED. No other calculator is allowed. RECOMMENDED: TI-30Xa calculator

OwenDavis

2014-08-20T23:59:59.000Z

73

Calculation of sensitivity coefficients for a neutron well logging tool  

E-Print Network (OSTI)

(Lsmsrsh, 1966; Bartine et al. , 1974; Duderstadt et al. , 1976). The straightforward (direct) calculation requires knowledge of the forward neutron flux, neutron cross section data, and detector responses (such as reaction rates) for each situation, i.... e. , the detector's responses are repeatedly com- puted for each change in the formation's composition. The perturbation (indirect) method requires knowledge of the forward neutron flux, detector response, and sd- joint neutron flux for a base...

Chen, Chien-Hsiang

2012-06-07T23:59:59.000Z

74

Improvements in EBR-2 core depletion calculations  

SciTech Connect

The need for accurate core depletion calculations in Experimental Breeder Reactor No. 2 (EBR-2) is discussed. Because of the unique physics characteristics of EBR-2, it is difficult to obtain accurate and computationally efficient multigroup flux predictions. This paper describes the effect of various conventional and higher order schemes for group constant generation and for flux computations; results indicate that higher-order methods are required, particularly in the outer regions (i.e. the radial blanket). A methodology based on Nodal Equivalence Theory (N.E.T.) is developed which allows retention of the accuracy of a higher order solution with the computational efficiency of a few group nodal diffusion solution. The application of this methodology to three-dimensional EBR-2 flux predictions is demonstrated; this improved methodology allows accurate core depletion calculations at reasonable cost. 13 refs., 4 figs., 3 tabs.

Finck, P.J.; Hill, R.N.; Sakamoto, S.

1991-01-01T23:59:59.000Z

75

Physics of String Flux Compactifications  

E-Print Network (OSTI)

We provide a qualitative review of flux compactifications of string theory, focusing on broad physical implications and statistical methods of analysis.

Frederik Denef; Michael R. Douglas; Shamit Kachru

2007-01-06T23:59:59.000Z

76

JOURNALDE PHYSIQUE Colloque C6, supplkment au no 8, Tome 39, aolit 1978,page C6-619 FLUX-FLOW VOLTAGE PULSES I N SUPERCONDUCTORS  

E-Print Network (OSTI)

tension pnoduite par le mou- vement d'un vortex ou tube de flux. Abstract.- A new theoretical method for the calculation of the measured voltage pulse produced by a moving flux vortex or flux tube is described the superconductor, the lo- + cal flux density contribution bi from vortex i is large only within about XB

Boyer, Edmond

77

Carbon Dioxide Flux Measurement Systems (CO2Flux) Handbook  

SciTech Connect

The Southern Great Plains (SGP) carbon dioxide flux (CO2 flux) measurement systems provide half-hour average fluxes of CO2, H2O (latent heat), and sensible heat. The fluxes are obtained by the eddy covariance technique, which computes the flux as the mean product of the vertical wind component with CO2 and H2O densities, or estimated virtual temperature. A three-dimensional sonic anemometer is used to obtain the orthogonal wind components and the virtual (sonic) temperature. An infrared gas analyzer is used to obtain the CO2 and H2O densities. A separate sub-system also collects half-hour average measures of meteorological and soil variables from separate 4-m towers.

Fischer, M

2005-01-01T23:59:59.000Z

78

The Solar Wind Energy Flux  

Science Journals Connector (OSTI)

The solar-wind energy flux measured near the Ecliptic is known...Helios, Ulysses, and Wind...covering a large range of latitudes and time, we show that the solar-wind energy flux is independent of the solar-wind....

G. Le Chat; K. Issautier; N. Meyer-Vernet

2012-07-01T23:59:59.000Z

79

Flux noise in high-temperature superconductors  

Science Journals Connector (OSTI)

Spontaneously created vortex-antivortex pairs are the predominant source of flux noise in high-temperature superconductors. In principle, flux noise measurements allow to check theoretical predictions for both the distribution of vortex-pair sizes and for the vortex diffusivity. In this paper the flux-noise power spectrum is calculated for the highly anisotropic high-temperature superconductor Bi2Sr2CaCu2O8+?, both for bulk crystals and for ultrathin films. The spectrum is basically given by the Fourier transform of the temporal magnetic-field correlation function. We start from a Berezinskii-Kosterlitz-Thouless-type theory and incorporate vortex diffusion, intrapair vortex interaction, and annihilation of pairs by means of a Fokker-Planck equation to determine the noise spectrum below and above the superconducting transition temperature. We find white noise at low frequencies ? and a spectrum proportional to 1/?3/2 at high frequencies. The crossover frequency between these regimes strongly depends on temperature. The results are compared with earlier results of computer simulations.

Carsten Timm

1997-02-01T23:59:59.000Z

80

Solar Model Parameters and Direct Measurements of Solar Neutrino Fluxes  

E-Print Network (OSTI)

We explore a novel possibility of determining the solar model parameters, which serve as input in the calculations of the solar neutrino fluxes, by exploiting the data from direct measurements of the fluxes. More specifically, we use the rather precise value of the $^8B$ neutrino flux, $\\phi_B$ obtained from the global analysis of the solar neutrino and KamLAND data, to derive constraints on each of the solar model parameters on which $\\phi_B$ depends. We also use more precise values of $^7Be$ and $pp$ fluxes as can be obtained from future prospective data and discuss whether such measurements can help in reducing the uncertainties of one or more input parameters of the Standard Solar Model.

Abhijit Bandyopadhyay; Sandhya Choubey; Srubabati Goswami; S. T. Petcov

2006-08-30T23:59:59.000Z

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

ARM - Measurement - Sensible heat flux  

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

govMeasurementsSensible heat flux govMeasurementsSensible heat flux ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Sensible heat flux The time rate of flow for the energy transferred from a warm or hot surface to whatever is touching it, typically air. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System EBBR : Energy Balance Bowen Ratio Station

82

ARM - Measurement - Latent heat flux  

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

govMeasurementsLatent heat flux govMeasurementsLatent heat flux ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Latent heat flux The time rate of flow for the specific enthalpy difference between two phases of a substance at the same temperature, typically water. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System EBBR : Energy Balance Bowen Ratio Station

83

What do we (not) know theoretically about solar neutrino fluxes?  

E-Print Network (OSTI)

Solar model predictions of 8B and p-p neutrinos agree with the experimentally-determined fluxes (including oscillations): phi(pp)_{measured} = (1.02 +- 0.02 +- 0.01)phi(pp)_{theory}, and phi(8B)_{measured} =(0.88 +- .04 +- 0.23)phi(8B)_{theory}, 1 sigma experimental and theoretical uncertainties, respectively. We use improved input data for nuclear fusion reactions, the equation of state, and the chemical composition of the Sun. The solar composition is the dominant uncertainty in calculating the 8B and CNO neutrino fluxes; the cross section for the 3He(4He, gamma)7Be reaction is the largest uncertainty for the calculated 7Be neutrino flux.

John N. Bahcall; M. H. Pinsonneault

2004-02-04T23:59:59.000Z

84

How Do Calculators Calculate? Helmut Knaust  

E-Print Network (OSTI)

not convert numbers to base 2. They use a binary-coded decimal (BCD) system instead. Calculators can only

Knaust, Helmut

85

Saturation levels of heat-flux- and fast-electron-driven ion-acoustic-wave turbulence  

Science Journals Connector (OSTI)

Saturation levels of ion-acoustic-wave turbulence driven by a heat-flux and a suprathermal electron current have been calculated on the basis of perturbed-orbit theory. The levels are found to be lower than those commonly estimated from simple trapping arguments and too low to explain the thermal-flux inhibition observed in many laser-plasma experiments.

H. C. Barr and T. J. M. Boyd

1981-10-01T23:59:59.000Z

86

ARM - Measurement - Soil moisture flux  

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

moisture flux moisture flux ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Soil moisture flux A quantity measured according to the formula B = {lambda}(dq/dz), where {lambda} is the conductivity of the soil that the moisture is moving through. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems External Instruments ECMWFDIAG : European Centre for Medium Range Weather Forecasts

87

ARM - Measurement - Soil heat flux  

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

heat flux heat flux ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Soil heat flux A quantity measured according to the formula B = {lambda}(dT/dz), where {lambda} is the conductivity of the soil that the heat is moving through. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems EBBR : Energy Balance Bowen Ratio Station SEBS : Surface Energy Balance System External Instruments

88

Flux, Vol. 1, Issue 2  

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

&24; flux a publication of the national high magnetic field laboratory Introduction &24; In a weak economy, U.S. research funding tends to become more heavily weighted toward applied...

89

Plasmoids as magnetic flux ropes  

SciTech Connect

Observational constraints on the magnetic topology and orientation of plasmoids is examined using a magnetic field model. The authors develop a magnetic flux rope model to examine whether principal axis analysis (PAA) of magnetometer signatures from a single satellite pass is sufficient to determine the magnetic topology of plasmoids and if plasmoid observations are best explained by the flux rope, closed loop, or large-amplitude wave picture. Satellite data are simulated by extracting the magnetic field along a path through the model of a magnetic flux rope. They then examine the results using PAA. They find that the principal axis directions (and therefore the interpretation of structure orientation) is highly dependent on several parameters including the satellite trajectory through the structure. Because of this they conclude that PAA of magnetometer data from a single satellite pass is insufficient to differentiate between magnetic closed loop and flux rope models. They also compare the model results to ISEE 3 magnetometer data of plasmoid events in various coordinate frames including principal axis and geocentric solar magnetospheric. They find that previously identified plasmoid events that have been explained as closed loop structures can also be modeled as flux ropes. They also searched the literature for previously reported flux rope and closed loop plasmoid events to examine if these structures had any similarities and/or differences. The results of the modeling efforts and examination of both flux rope and plasmoid events lead them to favor the flux rope model of plasmoid formation, as it is better able to unify the observations of various magnetic structures observed by ISEE 3.

Moldwin, M.B.; Hughes, W.J. (Boston Univ., MA (United States))

1991-08-01T23:59:59.000Z

90

Temperature effect of the integral flux of cosmic-ray muons at high energies  

Science Journals Connector (OSTI)

The temperature coefficients of the integral fluxes of cosmic-ray muons arriving at sea level vertically and horizontally with energies of 102, 104, and 3 106...GeV are calculated. Decays of pions, kaons, and c...

L. V. Volkova

2013-11-01T23:59:59.000Z

91

Advanced Online Flux Mapping of CANDU PHWR by Least-Squares Method  

SciTech Connect

A least-squares method that solves both the core neutronics design equations and the in-core detector response equations on the least-squares principle is presented as a new advanced online flux-mapping method for CANada Deuterium Uranium (CANDU) pressurized heavy water reactors (PHWRs). The effectiveness of the new flux-mapping method is examined in terms of online flux-mapping calculations with numerically simulated true flux distribution and detector signals and those with the actual core-follow data for the Wolsong CANDU PHWRs in Korea. The effects of core neutronics models as well as the detector failures and uncertainties of measured detector signals on the effectiveness of the least-squares flux-mapping calculations are also examined.The following results are obtained. The least-squares method predicts the flux distribution in better agreement with the simulated true flux distribution than the standard core neutronics calculations by the finite difference method (FDM) computer code without using the detector signals. The adoption of the nonlinear nodal method based on the unified nodal method formulation instead of the FDM results in a significant improvement in prediction accuracy of the flux-mapping calculations. The detector signals estimated from the least-squares flux-mapping calculations are much closer to the measured detector signals than those from the flux synthesis method (FSM), the current online flux-mapping method for CANDU reactors. The effect of detector failures is relatively small so that the plant can tolerate up to 25% of detector failures without seriously affecting the plant operation. The detector signal uncertainties aggravate accuracy of the flux-mapping calculations, yet the effects of signal uncertainties of the order of 1% standard deviation can be tolerable without seriously degrading the prediction accuracy of the least-squares method. The least-squares method is disadvantageous because it requires longer CPU time than the existing FSM. Considering ever-increasing computer speed and the improved operational safety margin of CANDU reactors gained by accurate flux-mapping calculations, however, it is concluded that the least-squares method presents an effective alternative to the existing flux-mapping method for CANDU reactors.

Hong, In Seob [Seoul National University (Korea, Republic of); Kim, Chang Hyo [Seoul National University (Korea, Republic of); Suk, Ho Chun [Korea Atomic Energy Research Institute (Korea, Republic of)

2005-07-15T23:59:59.000Z

92

Design of a differential radiometer for atmospheric radiative flux measurements  

SciTech Connect

The Hemispherical Optimized NEt Radiometer (HONER) is an instrument under development at the Los Alamos National Laboratory for deployment on an unmanned aerospace vehicle as part of the Atmospheric Radiation Measurements (ARM/UAV) program. HONER is a differential radiometer which will measure the difference between the total upwelling and downwelling fluxes and is intended to provide a means of measuring the atmospheric radiative flux divergence. Unlike existing instruments which measure the upwelling and downwelling fluxes separately, HONER will achieve an optical difference by chopping the two fluxes alternately onto a common pyroelectric detector. HONER will provide data resolved into two spectral bands; one covering the solar dominated region from less than 0.4 micrometer to approximately 4.5 micrometers and the other covering the region from approximately 4.5 micrometers to greater than 50 micrometers, dominated by thermal radiation. The means of separating the spectral regions guarantees seamless summation to calculate the total flux. The fields-of-view are near-hemispherical, upward and downward. The instrument can be converted, in flight, from the differential mode to absolute mode, measuring the upwelling and downwelling fluxes separately and simultaneously. The instrument also features continuous calibration from on-board sources. We will describe the design and operation of the sensor head and the on-board reference sources as well as the means of deployment.

LaDelfe, P.C.; Weber, P.G.; Rodriguez, C.W.

1994-11-01T23:59:59.000Z

93

Field dynamics and tunneling in a flux landscape  

E-Print Network (OSTI)

We investigate field dynamics and tunneling between metastable minima in a landscape of Type IIB flux compactifications, utilizing monodromies of the complex structure moduli space to continuously connect flux vacua. After describing the generic features of a flux-induced potential for the complex structure and Type IIB axio-dilaton, we specialize to the Mirror Quintic Calabi--Yau to obtain an example landscape. Studying the cosmological dynamics of the complex structure moduli, we find that the potential generically does not support slow-roll inflation and that in general the landscape separates neatly into basins of attraction of the various minima. We then discuss tunneling, with the inclusion of gravitational effects, in many-dimensional field spaces. A set of constraints on the form of the Euclidean paths through field space are presented, and then applied to construct approximate instantons mediating the transition between de Sitter vacua in the flux landscape. We find that these instantons are generically thick-wall and that the tunneling rate is suppressed in the large-volume limit. We also consider examples where supersymmetry is not broken by fluxes, in which case near-BPS thin-wall bubbles can be constructed. We calculate the bubble wall tension, finding that it scales like a D- or NS-brane bubble, and comment on the implications of this correspondence. Finally, we present a brief discussion of eternal inflation in the flux-landscape.

Matthew C Johnson; Magdalena Larfors

2008-11-06T23:59:59.000Z

94

Gas Flux Sampling | Open Energy Information  

Open Energy Info (EERE)

Gas Flux Sampling Gas Flux Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Gas Flux Sampling Details Activities (26) Areas (20) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: Field Sampling Parent Exploration Technique: Gas Sampling Information Provided by Technique Lithology: Stratigraphic/Structural: High flux can be indicative of conduits for fluid flow. Hydrological: Thermal: Anomalous flux is associated with active hydrothermal activity. Dictionary.png Gas Flux Sampling: Gas flux sampling measures the flow of volatile gas emissions from a specific location and compares it to average background emissions. Anomalously high gas flux can be an indication of hydrothermal activity.

95

Improved approximate formulas for flux from cylindrical and rectangular sources  

SciTech Connect

This report provides two new approximate formulas for the flux at detector points outside the radial and axial extensions of a homogeneous cylindrical source and improved approximate formulas for the flux at points opposite rectangular surface sources. These formulas extend the range of geometries for which analytic approximations may be used by shield design engineers to make rapid scoping studies and check more extensive calculations for reasonableness. These formulas can be used to support skeptical, independent evaluations and are also valuable teaching tools for introducing shield designers to complex shield analyses.

Wallace, O.J.; Bokharee, S.A.

1993-03-01T23:59:59.000Z

96

PROTOSTELLAR ACCRETION FLOWS DESTABILIZED BY MAGNETIC FLUX REDISTRIBUTION  

SciTech Connect

Magnetic flux redistribution lies at the heart of the problem of star formation in dense cores of molecular clouds that are magnetized to a realistic level. If all of the magnetic flux of a typical core were to be dragged into the central star, the stellar field strength would be orders of magnitude higher than the observed values. This well-known magnetic flux problem can in principle be resolved through non-ideal MHD effects. Two-dimensional (axisymmetric) calculations have shown that ambipolar diffusion, in particular, can transport magnetic flux outward relative to matter, allowing material to enter the central object without dragging the field lines along. We show through simulations that such axisymmetric protostellar accretion flows are unstable in three dimensions to magnetic interchange instability in the azimuthal direction. The instability is driven by the magnetic flux redistributed from the matter that enters the central object. It typically starts to develop during the transition from the prestellar phase of star formation to the protostellar mass accretion phase. In the latter phase, the magnetic flux is transported outward mainly through advection by strongly magnetized low-density regions that expand against the collapsing inflow. The tussle between the gravity-driven infall and magnetically driven expansion leads to a highly filamentary inner accretion flow that is more disordered than previously envisioned. The efficient outward transport of magnetic flux by advection lowers the field strength at small radii, making the magnetic braking less efficient and the formation of rotationally supported disks easier in principle. However, we find no evidence for such disks in any of our rotating collapse simulations. We conclude that the inner protostellar accretion flow is shaped to a large extent by the flux redistribution-driven magnetic interchange instability. How disks form in such an environment is unclear.

Krasnopolsky, Ruben; Shang, Hsien [Academia Sinica, Institute of Astronomy and Astrophysics, Taipei, Taiwan (China); Li Zhiyun; Zhao Bo [University of Virginia, Astronomy Department, Charlottesville (United States)

2012-09-20T23:59:59.000Z

97

Original Impact Calculations  

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

Original Impact Calculations, from the Tool Kit Framework: Small Town University Energy Program (STEP).

98

Thermality of the Hawking flux  

E-Print Network (OSTI)

Is the Hawking flux "thermal"? Unfortunately, the answer to this seemingly innocent question depends on a number of often unstated, but quite crucial, technical assumptions built into modern (mis-)interpretations of the word "thermal". The original 1850's notions of thermality --- based on classical thermodynamic reasoning applied to idealized "black bodies" or "lamp black surfaces" --- when supplemented by specific basic quantum ideas from the early 1900's, immediately led to the notion of the black-body spectrum, (the Planck-shaped spectrum), but "without" any specific assumptions or conclusions regarding correlations between the quanta. Many (not all) modern authors (often implicitly and unintentionally) add an extra, and quite unnecessary, assumption that there are no correlations in the black-body radiation; but such usage is profoundly ahistorical and dangerously misleading. Specifically, the Hawking flux from an evaporating black hole, (just like the radiation flux from a leaky furnace or a burning lump of coal), is only "approximately" Planck-shaped over a bounded frequency range. Standard physics (phase space and adiabaticity effects) explicitly bound the frequency range over which the Hawking flux is "approximately" Planck-shaped from both above and below --- the Hawking flux is certainly not exactly Planckian, and there is no compelling physics reason to assume the Hawking photons are uncorrelated.

Matt Visser

2014-09-27T23:59:59.000Z

99

ARM - PI Product - Atmospheric State, Cloud Microphysics & Radiative Flux  

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

ProductsAtmospheric State, Cloud Microphysics & ProductsAtmospheric State, Cloud Microphysics & Radiative Flux Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : Atmospheric State, Cloud Microphysics & Radiative Flux 1997.01.01 - 2010.12.31 Site(s) NSA SGP TWP General Description This data product contains atmospheric thermodynamics, cloud properties, radiative fluxes and radiative heating rates. The data represent a characterization of the physical state of the atmospheric column compiled on a five-minute temporal and 90m vertical grid. Sources for this information include raw measurements, cloud property and radiative retrievals, retrievals and derived variables from other third-party sources, and radiative calculations using the derived quantities.

100

Fate of False Vacuum in Superconducting Flux Qubits  

E-Print Network (OSTI)

We propose a similarity between the scenario of fate of false vacuum in cosmology at early universe and the situation in where the quantum state decays in superconducting Flux qubit. This is due to the fact that both cases have two homogeneous stable equilibrium states in scalar field, which in quantum theory, could penetrate through the barrier in different possibilities and hence considered unstable decaying in time. In quantum computation, decay rate is among the most important factors in characteristics of the system like coherency, reliability, measurement fidelity, etc. In this considered potential, the decay rate from the penetrating (False vacuum) state to the stable (absolute minimum) state is achieved to leading order in Planck constant by the approach of Instanton model. In case of the superconducting flux qubit having thin barrier potential, the decay rate is calculated and its relations with actual set of parameters in flux qubit design are introduced.

Rad, Ali Izadi; Fardmanesh, Mehdi

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

Fate of False Vacuum in Superconducting Flux Qubits  

E-Print Network (OSTI)

We propose a similarity between the scenario of fate of false vacuum in cosmology at early universe and the situation in where the quantum state decays in superconducting Flux qubit. This is due to the fact that both cases have two homogeneous stable equilibrium states in scalar field, which in quantum theory, could penetrate through the barrier in different possibilities and hence considered unstable decaying in time. In quantum computation, decay rate is among the most important factors in characteristics of the system like coherency, reliability, measurement fidelity, etc. In this considered potential, the decay rate from the penetrating (False vacuum) state to the stable (absolute minimum) state is achieved to leading order in Planck constant by the approach of Instanton model. In case of the superconducting flux qubit having thin barrier potential, the decay rate is calculated and its relations with actual set of parameters in flux qubit design are introduced.

Ali Izadi Rad; Hesam Zandi; Mehdi Fardmanesh

2014-11-26T23:59:59.000Z

102

High flux solar energy transformation  

DOE Patents (OSTI)

Disclosed are multi-stage systems for high flux transformation of solar energy allowing for uniform solar intensification by a factor of 60,000 suns or more. Preferred systems employ a focusing mirror as a primary concentrative device and a non-imaging concentrator as a secondary concentrative device with concentrative capacities of primary and secondary stages selected to provide for net solar flux intensification of greater than 2000 over 95 percent of the concentration area. Systems of the invention are readily applied as energy sources for laser pumping and in other photothermal energy utilization processes.

Winston, Roland (Chicago, IL); Gleckman, Philip L. (Chicago, IL); O'Gallagher, Joseph J. (Flossmoor, IL)

1991-04-09T23:59:59.000Z

103

Beta ray flux measuring device  

DOE Patents (OSTI)

A beta ray flux measuring device in an activated member in-core instrumentation system for pressurized water reactors. The device includes collector rings positioned about an axis in the reactor's pressure boundary. Activated members such as hydroballs are positioned within respective ones of the collector rings. A response characteristic such as the current from or charge on a collector ring indicates the beta ray flux from the corresponding hydroball and is therefore a measure of the relative nuclear power level in the region of the reactor core corresponding to the specific exposed hydroball within the collector ring.

Impink, Jr., Albert J. (Murrysville, PA); Goldstein, Norman P. (Murrysville, PA)

1990-01-01T23:59:59.000Z

104

R-value Calculator  

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

Advanced Wall Systems Advanced Wall Systems ORNL Home ASTM Testing BEP Home Related Sites Work With Us Advanced Wall Systems Home Interactive Calculators New Whole Wall R-value Calculators As A Part Of The ORNL Material Database For Whole Building Energy Simulations These calculators are replacing the old Whole Wall Thermal Performance calculator. These new versions of the calculator contain many new features and are part of the newly developed Interactive Envelope Materials Database for Whole-Building Energy Simulation Programs. The simple version of the Whole Wall R-value calculator is now available for use. This calculator is similar to the previous Whole Wall Thermal Performance calculator and does not require any downloads from the user. However, it was updated to allow calculations for fourteen wall details

105

Techniques and Review of Absolute Flux Calibration from the Ultraviolet to the Mid-Infrared  

E-Print Network (OSTI)

The measurement of precise absolute fluxes for stellar sources has been pursued with increased vigor since the discovery of the dark energy and the realization that its detailed understanding requires accurate spectral energy distributions (SEDs) of redshifted Ia supernovae in the rest frame. The flux distributions of spectrophotometric standard stars were initially derived from the comparison of stars to laboratory sources of known flux but are now mostly based on calculated model atmospheres. For example, pure hydrogen white dwarf (WD) models provide the basis for the HST CALSPEC archive of flux standards. The basic equations for quantitative spectrophotometry and photometry are explained in detail. Several historical lab based flux calibrations are reviewed; and the SEDs of stars in the major on-line astronomical databases are compared to the CALSPEC reference standard spectrophotometry. There is good evidence that relative fluxes from the visible to the near-IR wavelength of ~2.5 micron are currently accu...

Bohlin, Ralph C; Tremblay, P -E

2014-01-01T23:59:59.000Z

106

2, 10671085, 2005 Flux measurements  

E-Print Network (OSTI)

0.50 m. The study site consisted of grass (10% of area), bean5 (15%), corn (15%) and rice (60 in the components of the surface energy balance and in CO2 flux. Results show that the pattern of energy parti- tion suddenly increased after thunderstorm events. We examined the energy budget closure and found

Paris-Sud XI, Université de

107

Superconducting flux flow digital circuits  

DOE Patents (OSTI)

A NOR/inverter logic gate circuit and a flip flop circuit implemented with superconducting flux flow transistors (SFFTs) are disclosed. Both circuits comprise two SFFTs with feedback lines. They have extremely low power dissipation, very high switching speeds, and the ability to interface between Josephson junction superconductor circuits and conventional microelectronics. 8 figs.

Hietala, V.M.; Martens, J.S.; Zipperian, T.E.

1995-02-14T23:59:59.000Z

108

Superconducting flux flow digital circuits  

DOE Patents (OSTI)

A NOR/inverter logic gate circuit and a flip flop circuit implemented with superconducting flux flow transistors (SFFTs). Both circuits comprise two SFFTs with feedback lines. They have extremely low power dissipation, very high switching speeds, and the ability to interface between Josephson junction superconductor circuits and conventional microelectronics.

Hietala, Vincent M. (Placitas, NM); Martens, Jon S. (Sunnyvale, CA); Zipperian, Thomas E. (Albuquerque, NM)

1995-01-01T23:59:59.000Z

109

Scaling and profiles of heat flux during partial detachment in DIII-D  

SciTech Connect

The authors examine the scaling of the peak divertor heat flux and total divertor plate power in partially detached divertor (PDD) discharges in DIII-D, as a function of input power and radiated power. The peak divertor heat flux in the attached plasma increases linearly with input power, but saturates in the detached cases. The total divertor plate power remains linear with input power in both the attached and detached plasmas. This is consistent with the fact that the heat flux peak is reduced from the attached case but other areas receive increased radiant heating from the detached plasma. The divertor plate radiant heating is linear with input power because the total radiated power from the entire plasma is a linear function of input power in both attached and detached plasma. In the private flux region, radiated heat flux absorbed on the target plate calculated from bolometer data is enough to account for the measured plate heating. Approximately half of the overall plate heating power in detached plasma is due to absorbed radiation. By mapping the divertor heat flux before and during the PDD to flux coordinates, and comparing with a flux mapping of inserted bolometer and tangential TV data, they have verified that the radiated power is emitted from the same flux surfaces on which heat flux is reduced.

Lasnier, C.J.; Hill, D.N.; Allen, S.L.; Fenstermacher, M.E.; Porter, G.D. [Lawrence Livermore National Lab., CA (United States); Leonard, A.W.; Petrie, T.W. [General Atomics, San Diego, CA (United States); Watkins, J.G. [Sandia National Labs., Albuquerque, NM (United States)

1998-08-01T23:59:59.000Z

110

QUANTIFICATION OF HEAT FLUX FROM A REACTING THERMITE SPRAY  

SciTech Connect

Characterizing the combustion behaviors of energetic materials requires diagnostic tools that are often not readily or commercially available. For example, a jet of thermite spray provides a high temperature and pressure reaction that can also be highly corrosive and promote undesirable conditions for the survivability of any sensor. Developing a diagnostic to quantify heat flux from a thermite spray is the objective of this study. Quick response sensors such as thin film heat flux sensors can not survive the harsh conditions of the spray, but more rugged sensors lack the response time for the resolution desired. A sensor that will allow for adequate response time while surviving the entire test duration was constructed. The sensor outputs interior temperatures of the probes at known locations and utilizes an inverse heat conduction code to calculate heat flux values. The details of this device are discussed and illustrated. Temperature and heat flux measurements of various thermite spray conditions are reported. Results indicate that this newly developed energetic material heat flux sensor provides quantitative data with good repeatability.

Eric Nixon; Michelle Pantoya

2009-07-01T23:59:59.000Z

111

Quantum Fusion of Domain Walls with Fluxes  

E-Print Network (OSTI)

We study how fluxes on the domain wall world volume modify quantum fusion of two distant parallel domain walls into a composite wall. The elementary wall fluxes can be separated into parallel and antiparallel components. The parallel component affects neither the binding energy nor the process of quantum merger. The antiparallel fluxes, instead, increase the binding energy and, against naive expectations, suppress quantum fusion. In the small flux limit we explicitly find the bounce solution and the fusion rate as a function of the flux. We argue that at large (antiparallel) fluxes there exists a critical value of the flux (versus the difference in the wall tensions), which switches off quantum fusion altogether. This phenomenon of flux-related wall stabilization is rather peculiar: it is unrelated to any conserved quantity. Our consideration of the flux-related all stabilization is based on substantiated arguments that fall short of complete proof.

S. Bolognesi; M. Shifman; M. B. Voloshin

2009-07-20T23:59:59.000Z

112

RADIATION DOSE CALCULATION FOR FUEL HANDLING FACILITY CLOSURE CELL EQUIPMENT  

SciTech Connect

This calculation evaluates the energy deposition rates in silicon, gamma and neutron flux spectra at various locations of interest throughout FHF closure cell. The physical configuration features a complex geometry, with particle flux attenuation of many orders of magnitude that cannot be modeled by computer codes that use deterministic methods. Therefore, in this calculation the Monte Carlo method was used to solve the photon and neutron transport. In contrast with the deterministic methods, Monte Carlo does not solve an explicit transport equation, but rather obtain answers by simulating individual particles, recording the aspects of interest of their average behavior, and estimates the statistical precision of the results.

D. Musat

2005-03-07T23:59:59.000Z

113

High-flux solar photon processes  

SciTech Connect

This study was commissioned by the National Renewable Energy Laboratory (NREL) for the purpose of identifying high-flux photoprocesses that would lead to beneficial national and commercial applications. The specific focus on high-flux photoprocesses is based on the recent development by NREL of solar concentrator technology capable of delivering record flux levels. We examined photolytic and photocatalytic chemical processes as well as photothermal processes in the search for processes where concentrated solar flux would offer a unique advantage. 37 refs.

Lorents, D C; Narang, S; Huestis, D C; Mooney, J L; Mill, T; Song, H K; Ventura, S [SRI International, Menlo Park, CA (United States)

1992-06-01T23:59:59.000Z

114

ARM - Heat Index Calculations  

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

FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox Lesson Plans Heat Index Calculations Heat Index is an index that combines air temperature and relative...

115

ARM - Wind Chill Calculations  

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

FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox Lesson Plans Wind Chill Calculations Wind Chill is the apparent temperature felt on the exposed human...

116

Reactor Neutrino Flux Uncertainty Suppression on Multiple Detector Experiments  

E-Print Network (OSTI)

This publication provides a coherent treatment for the reactor neutrino flux uncertainties suppression, specially focussed on the latest $\\theta_{13}$ measurement. The treatment starts with single detector in single reactor site, most relevant for all reactor experiments beyond $\\theta_{13}$. We demonstrate there is no trivial error cancellation, thus the flux systematic error can remain dominant even after the adoption of multi-detector configurations. However, three mechanisms for flux error suppression have been identified and calculated in the context of Double Chooz, Daya Bay and RENO sites. Our analysis computes the error {\\it suppression fraction} using simplified scenarios to maximise relative comparison among experiments. We have validated the only mechanism exploited so far by experiments to improve the precision of the published $\\theta_{13}$. The other two newly identified mechanisms could lead to total error flux cancellation under specific conditions and are expected to have major implications on the global $\\theta_{13}$ knowledge today. First, Double Chooz, in its final configuration, is the only experiment benefiting from a negligible reactor flux error due to a $\\sim$90\\% geometrical suppression. Second, Daya Bay and RENO could benefit from their partial geometrical cancellation, yielding a potential $\\sim$50\\% error suppression, thus significantly improving the global $\\theta_{13}$ precision today. And third, we illustrate the rationale behind further error suppression upon the exploitation of the inter-reactor error correlations, so far neglected. So, our publication is a key step forward in the context of high precision neutrino reactor experiments providing insight on the suppression of their intrinsic flux error uncertainty, thus affecting past and current experimental results, as well as the design of future experiments.

Andi Cucoanes; Pau Novella; Anatael Cabrera; Muriel Fallot; Anthony Onillon; Michel Obolensky; Frederic Yermia

2015-01-02T23:59:59.000Z

117

Relaxation of spheromak configurations with open flux  

Science Journals Connector (OSTI)

The relaxation of several kink unstable equilibria with open flux representative of spheromaks sustained by dc helicity injection is studied by means of three-dimensional resistivemagnetohydrodynamic simulations. No external driving is applied but the initial conditions are chosen to reproduce the current profiles existing in a gun driven spheromak which has a high current density in the open flux region and a low current density in the closed flux region. The growth and nonlinear saturation of various unstable modes the dynamo action which converts toroidal flux into poloidal flux and the evolution of the ? profile ( ? = ? 0 J ? B / B 2 ) are studied. An initial condition is found which results in a dynamo that produces enough poloidal flux to compensate the resistive losses occurred during a characteristic time of the instability. The flux amplification factor around which this case oscillates is consistent with existing experimental data. During the relaxation the central open flux tube develops a helical distortion and the closed flux surfaces are destroyed. After the relaxation event close flux surfaces form again but the final profiles are not fully relaxed and the central open flux tube remains distorted. The effect of the Lundquist number on the evolution and its impact on the required level of fluctuations are evaluated. Finally the dynamics of the system for different current levels in the open flux region is studied.

Pablo Luis Garca-Martnez; Ricardo Farengo

2009-01-01T23:59:59.000Z

118

High Heat Flux Thermoelectric Module Using Standard Bulk Material...  

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

Heat Flux Thermoelectric Module Using Standard Bulk Material High Heat Flux Thermoelectric Module Using Standard Bulk Material Presents high heat flux thermoelectric module design...

119

Improved Calculation of Core Loss With Nonsinusoidal Waveforms  

E-Print Network (OSTI)

. Comparison with experimental measure- ments in MnZn ferrite shows improved accuracy. The result may be op machines, transformers, inductors, and other static reactors, loss in the magnetic material is often pre of the flux density. It can be directly calculated from geometry and bulk resistivity in ferrites, and

120

Performance and safety parameters for the high flux isotope reactor  

SciTech Connect

A Monte Carlo depletion model for the High Flux Isotope Reactor (HFIR) Cycle 400 and its use in calculating parameters of relevance to the reactor performance and safety during the reactor cycle are presented in this paper. This depletion model was developed to serve as a reference for the design of a low-enriched uranium (LEU) fuel for an ongoing study to convert HFIR from high-enriched uranium (HEU) to LEU fuel; both HEU and LEU depletion models use the same methodology and ENDF/B-VII nuclear data as discussed in this paper. The calculated HFIR Cycle 400 parameters, which are compared with measurement data from critical experiments performed at HFIR, data included in the HFIR Safety Analysis Report (SAR), or data reported by previous calculations, provide a basis for verification or updating of the corresponding SAR data. (authors)

Ilas, G. [Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, TN 37831-6172 (United States); Primm III, T. [Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, TN 37831-6172 (United States); Primm Consulting, LLC, 945 Laurel Hill Road, Knoxville, TN 37923 (United States)

2012-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

An evaluation of multigroup flux predictions in the EBR-II core  

SciTech Connect

The unique physics characteristics of EBR-II which are difficult to model with conventional neutronic methodologies are identified; the high neutron leakage fraction and importance of neutron reflection cause errors when conventional calculational approximations are utilized. In this paper, various conventional and higher-order group constant evaluations and flux computation methods are compared for a simplified R-Z model of the EBR-II system. Although conventional methods do provide adequate predictions of the flux in the core region, significant mispredictions are observed in the reflector and radial blanket regions. Calculational comparisons indicate that a fine energy group structure is required for accurate predictions of the eigenvalue and flux distribution; greater detail is needed in the iron resonance scattering treatment. Calculational comparisons also indicate that transport theory with detailed anisotropic scattering treatment is required.

Hill, R.N.; Fanning, T.H.; Finck, P.J.

1991-12-31T23:59:59.000Z

122

An evaluation of multigroup flux predictions in the EBR-II core  

SciTech Connect

The unique physics characteristics of EBR-II which are difficult to model with conventional neutronic methodologies are identified; the high neutron leakage fraction and importance of neutron reflection cause errors when conventional calculational approximations are utilized. In this paper, various conventional and higher-order group constant evaluations and flux computation methods are compared for a simplified R-Z model of the EBR-II system. Although conventional methods do provide adequate predictions of the flux in the core region, significant mispredictions are observed in the reflector and radial blanket regions. Calculational comparisons indicate that a fine energy group structure is required for accurate predictions of the eigenvalue and flux distribution; greater detail is needed in the iron resonance scattering treatment. Calculational comparisons also indicate that transport theory with detailed anisotropic scattering treatment is required.

Hill, R.N.; Fanning, T.H.; Finck, P.J.

1991-01-01T23:59:59.000Z

123

Vehicle Cost Calculator  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Annual GHG Emissions (lbs of CO2) Vehicle Cost Calculator See Assumptions and Methodology Back Next U.S. Department of Energy Energy Efficiency and Renewable Energy Get Widget Code...

124

Calculating polynomial runtime properties  

Science Journals Connector (OSTI)

Affine size-change analysis has been used for termination analysis of eager functional programming languages. The same style of analysis is also capable of compactly recording and calculating other properties of programs, including their runtime, maximum ...

Hugh Anderson; Siau-Cheng Khoo; Stefan Andrei; Beatrice Luca

2005-11-01T23:59:59.000Z

125

Method of fission heat flux determination from experimental data  

DOE Patents (OSTI)

A method is provided for determining the fission heat flux of a prime specimen inserted into a specimen of a test reactor. A pair of thermocouple test specimens are positioned at the same level in the holder and a determination is made of various experimental data including the temperature of the thermocouple test specimens, the temperature of bulk water channels located in the test holder, the gamma scan count ratios for the thermocouple test specimens and the prime specimen, and the thicknesses of the outer clads, the fuel fillers, and the backclad of the thermocouple test specimen. Using this experimental data, the absolute value of the fission heat flux for the thermocouple test specimens and prime specimen can be calculated.

Paxton, Frank A. (Schenectady, NY)

1999-01-01T23:59:59.000Z

126

Cooper-pair current in the presence of flux noise  

Science Journals Connector (OSTI)

We study the effect of flux noise on the Cooper pair current of a superconducting charge pump. We generalize the definition of the current in order to take into account the contribution induced by the environment. It turns out that this dissipative current vanishes for charge noise but it is finite in general for noise operators that do not commute with the charge operator. We discuss in a generic framework the effect of flux noise and present a way to engineer it by coupling the system to an additional external circuit. We calculate numerically the pumped charge through the device by solving the master equation for the reduced density matrix of the system and show how it depends on the coupling to the artificial environment.

P. Solinas; M. Mttnen; J. Salmilehto; J. P. Pekola

2012-01-20T23:59:59.000Z

127

Category:Gas Flux Sampling | Open Energy Information  

Open Energy Info (EERE)

Gas Flux Sampling page? For detailed information on Gas Flux Sampling as exploration techniques, click here. Category:Gas Flux Sampling Add.png Add a new Gas Flux Sampling...

128

Spreadsheet Based Scaling Calculations and Membrane Performance  

SciTech Connect

Many membrane element manufacturers provide a computer program to aid buyers in the use of their elements. However, to date there are few examples of fully integrated public domain software available for calculating reverse osmosis and nanofiltration system performance. The Total Flux and Scaling Program (TFSP), written for Excel 97 and above, provides designers and operators new tools to predict membrane system performance, including scaling and fouling parameters, for a wide variety of membrane system configurations and feedwaters. The TFSP development was funded under EPA contract 9C-R193-NTSX. It is freely downloadable at www.reverseosmosis.com/download/TFSP.zip. TFSP includes detailed calculations of reverse osmosis and nanofiltration system performance. Of special significance, the program provides scaling calculations for mineral species not normally addressed in commercial programs, including aluminum, iron, and phosphate species. In addition, ASTM calculations for common species such as calcium sulfate (CaSO{sub 4}{times}2H{sub 2}O), BaSO{sub 4}, SrSO{sub 4}, SiO{sub 2}, and LSI are also provided. Scaling calculations in commercial membrane design programs are normally limited to the common minerals and typically follow basic ASTM methods, which are for the most part graphical approaches adapted to curves. In TFSP, the scaling calculations for the less common minerals use subsets of the USGS PHREEQE and WATEQ4F databases and use the same general calculational approach as PHREEQE and WATEQ4F. The activities of ion complexes are calculated iteratively. Complexes that are unlikely to form in significant concentration were eliminated to simplify the calculations. The calculation provides the distribution of ions and ion complexes that is used to calculate an effective ion product ''Q.'' The effective ion product is then compared to temperature adjusted solubility products (Ksp's) of solids in order to calculate a Saturation Index (SI) for each solid of interest. The SI is expressed as a log value (log(Q) - log(Ksp)) where positive values indicate potential scaling conditions. As this is an unprotected spreadsheet, the methodology is plainly visible to and readily modified by the user.

Wolfe, T D; Bourcier, W L; Speth, T F

2000-12-28T23:59:59.000Z

129

Metamaterial anisotropic flux concentrators and magnetic arrays  

E-Print Network (OSTI)

A metamaterial magnetic flux concentrator is investigated in detail in combination with a Halbach cylinder of infinite length. A general analytical solution to the field is determined and the magnetic figure of merit is determined for a Halbach cylinder with a flux concentrator. It is shown that an ideal flux concentrator will not change the figure of merit of a given magnet design, while the non-ideal will always lower it. The geometric parameters producing maximum figure of merit, i.e. the most efficient devices, are determined. The force and torque between two concentric Halbach cylinders with flux concentrators is determined and the maximum torque is found. Finally, the effect of non-ideal flux concentrators and the practical use of flux concentrators, as well as demagnetization issues, is discussed.

Bjrk, R; Bahl, C R H

2014-01-01T23:59:59.000Z

130

TVDG LET Calculator  

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

To The B N L Tandem Van de Graaff Accelerator To The B N L Tandem Van de Graaff Accelerator TVDG LET Calculator This program calculates the Peak LET, Corresponding Energy and Range as well as the LET and Range at the Specified Energy for the Specified Ion in the Specified Target. Select the Target Material from the dropdown list. Select the Ion Specie from the dropdown list. Enter the Total Ion Energy in the text box. This is equal to the Atomic Mass times the Energy/Nucleon. Click the 'Calculate' button or press the 'Enter' key. The Peak LET, Corresponding Energy and Range as well as the LET and Range at the Specified Energy for the Specified Ion in the Specified Target will be returned. Select your Target from the list Air Aluminum Oxide Carbon Copper Gallium Arsenide Gold Polyester Polyethylene Silicon Silicon Dioxide Skin Soda Lime Glass Sodium Iodide Water Select your Ion from the list

131

Solar Reflectance Index Calculator  

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

Reflectance Index Calculator Reflectance Index Calculator ASTM Designation: E 1980-01 Enter A State: Select a state Alabama Alaska Arkansas Arizona California Colorado Connecticut Delaware Florida Georgia Hawaii Iowa Idaho Illinois Indiana Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana North Carolina North Dakota Nebraska Nevada New Hampshire New Jersey New Mexico New York Ohio Oklahoma Oregon Pennsylvania Pacific Islands Puerto Rico Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington Wisconsin West Virginia Wyoming Canadian Cities Enter A City: Select a city Wind Speed (mph) Wind Speed (m/s) Please input both the SR and the TE and the convection coeficient and surface temperature will be calculated

132

Geothermal Life Cycle Calculator  

SciTech Connect

This calculator is a handy tool for interested parties to estimate two key life cycle metrics, fossil energy consumption (Etot) and greenhouse gas emission (ghgtot) ratios, for geothermal electric power production. It is based solely on data developed by Argonne National Laboratory for DOEs Geothermal Technologies office. The calculator permits the user to explore the impact of a range of key geothermal power production parameters, including plant capacity, lifetime, capacity factor, geothermal technology, well numbers and depths, field exploration, and others on the two metrics just mentioned. Estimates of variations in the results are also available to the user.

Sullivan, John

2014-03-11T23:59:59.000Z

133

Fast neutron fluxes in pressure vessels using Monte Carlo methods  

SciTech Connect

The objective of this project is to determine the feasibility of calculating the fast neutron flux in the pressure vessel of a pressurized water reactor by Monte Carlo methods. Neutron reactions reduce the ductility of the steel and thus limit the useful life of this important reactor component. This work was performed for Virginia Power (VEPCO). VIM is a continuous-energy Monte Carlo code which provides a versatile geometrical capability and a neutron physics data base closely representing the EDNF/B-IV data from which it was derived.

Edlund, M.C.; Thomas, J.R.

1986-01-01T23:59:59.000Z

134

Comparison of the high temperature heat flux sensor to traditional heat flux gages under high heat flux conditions.  

SciTech Connect

Four types of heat flux gages (Gardon, Schmidt-Boelter, Directional Flame Temperature, and High Temperature Heat Flux Sensor) were assessed and compared under flux conditions ranging between 100-1000 kW/m2, such as those seen in hydrocarbon fire or propellant fire conditions. Short duration step and pulse boundary conditions were imposed using a six-panel cylindrical array of high-temperature tungsten lamps. Overall, agreement between all gages was acceptable for the pulse tests and also for the step tests. However, repeated tests with the HTHFS with relatively long durations at temperatures approaching 1000%C2%B0C showed a substantial decrease (10-25%) in heat flux subsequent to the initial test, likely due to the mounting technique. New HTHFS gages have been ordered to allow additional tests to determine the cause of the flux reduction.

Blanchat, Thomas K.; Hanks, Charles R.

2013-04-01T23:59:59.000Z

135

Carbon Footprint Calculator  

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

This calculator estimates the amount of carbon emissions you and members of your household are responsible for. It does not include emissions associated with your work or getting to work if you commute by public transportation. It was developed by IEEE Spectrum magazine.

136

Plutonium 239 Equivalency Calculations  

SciTech Connect

This document provides the basis for converting actual weapons grade plutonium mass to a plutonium equivalency (PuE) mass of Plutonium 239. The conversion can be accomplished by performing calculations utilizing either: (1) Isotopic conversions factors (CF{sub isotope}), or (2) 30-year-old weapons grade conversion factor (CF{sub 30 yr}) Both of these methods are provided in this document. Material mass and isotopic data are needed to calculate PuE using the isotopic conversion factors, which will provide the actual PuE value at the time of calculation. PuE is the summation of the isotopic masses times their associated isotopic conversion factors for plutonium 239. Isotopic conversion factors are calculated by a normalized equation, relative to Plutonium 239, of specific activity (SA) and cumulated dose inhalation affects based on 50-yr committed effective dose equivalent (CEDE). The isotopic conversion factors for converting weapons grade plutonium to PuE are provided in Table-1. The unit for specific activity (SA) is curies per gram (Ci/g) and the isotopic SA values come from reference [1]. The cumulated dose inhalation effect values in units of rem/Ci are based on 50-yr committed effective dose equivalent (CEDE). A person irradiated by gamma radiation outside the body will receive a dose only during the period of irradiation. However, following an intake by inhalation, some radionuclides persist in the body and irradiate the various tissues for many years. There are three groups CEDE data representing lengths of time of 0.5 (D), 50 (W) and 500 (Y) days, which are in reference [2]. The CEDE values in the (W) group demonstrates the highest dose equivalent value; therefore they are used for the calculation.

Wen, J

2011-05-31T23:59:59.000Z

137

The Solar Wind Power from Magnetic Flux  

Science Journals Connector (OSTI)

Observations of the fast, high-latitude solar wind throughout Ulysses' three orbits show that solar wind power correlates remarkably well with the Sun's total open magnetic flux. These observations support a recent model of the solar wind energy and particle sources, where magnetic flux emergence naturally leads to an energy flux proportional to the strength of the large-scale magnetic field. This model has also been shown to be consistent with X-ray observations of the Sun and a variety of other stars over 12 decades of magnetic flux. The observations reported here show that the Sun delivers ~600 kW Wb?1 to power the solar wind, and that this power to magnetic flux relation has been extremely stable over the last 15 years. Thus, the same law that governs energy released in the corona and from other stars also applies to the total energy in the solar wind.

N. A. Schwadron; D. J. McComas

2008-01-01T23:59:59.000Z

138

CO2 Flux Estimated from Air-Sea Difference in CO2 Partial Pressure  

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

CO2 Flux Estimated from Air-Sea Difference in CO2 Partial Pressure (Revised October 2009) CO2 Flux Estimated from Air-Sea Difference in CO2 Partial Pressure (Revised October 2009) The files in this site contain a revised (October 2009) version of the climatological mean values in 4° Latitude X 5° Longitude box areas and the distribution maps. These were originally published in: Takahashi, et al. (2009), DSR II, 56, 554-577. The data file containing annual flux data for each 4° X 5° box is located here. The data file from which this map was created, including all 12 months of data is here. This data file, in ASCII form, also contains the flux data and the intermediate values used to calculate that flux for each month. In December 2010 our colleague, R. Wanninkhof pointed out a problem with the flux data for the month of December. The file of ice coverage for December was corrupted and showed zero ice for the entire month, worldwide. This has been corrected with the estimated percent of ice and the flux recalculated. Version "c" of the data files contain this correction.

139

Hydrogen Threshold Cost Calculation  

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

Program Record (Offices of Fuel Cell Technologies) Program Record (Offices of Fuel Cell Technologies) Record #: 11007 Date: March 25, 2011 Title: Hydrogen Threshold Cost Calculation Originator: Mark Ruth & Fred Joseck Approved by: Sunita Satyapal Date: March 24, 2011 Description: The hydrogen threshold cost is defined as the hydrogen cost in the range of $2.00-$4.00/gge (2007$) which represents the cost at which hydrogen fuel cell electric vehicles (FCEVs) are projected to become competitive on a cost per mile basis with the competing vehicles [gasoline in hybrid-electric vehicles (HEVs)] in 2020. This record documents the methodology and assumptions used to calculate that threshold cost. Principles: The cost threshold analysis is a "top-down" analysis of the cost at which hydrogen would be

140

Steep Slope Calculator  

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

Steep Slope Calculator Steep Slope Calculator Estimates Cooling and Heating Savings for Residential Roofs with Non-Black Surfaces Enter A State: Select a state Alabama Alaska Arkansas Arizona California Colorado Connecticut Delaware Florida Georgia Hawaii Iowa Idaho Illinois Indiana Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana North Carolina North Dakota Nebraska Nevada New Hampshire New Jersey New Mexico New York Ohio Oklahoma Oregon Pennsylvania Pacific Islands Puerto Rico Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington Wisconsin West Virginia Wyoming Canadian Cities Enter A City: Select a city Click to see Data for All 243 Locations Roof Inputs: R-value(Btu-in/(hr ft2 oF):

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

Achieving high flux amplification in a gun-driven, flux-core spheromak  

Science Journals Connector (OSTI)

A new means of operating flux-core spheromaks with possibly increased stability, confinement and pulse length is analysed by a resistive magnetohydrodynamic (MHD) model. High amplification of the bias poloidal flux, required to minimize ohmic losses, is achieved by reducing the bias rapidly in a plasma formed at a lower amplification. The plasma separatrix is predicted to expand and incorporate the removed bias flux maintaining the total poloidal flux within the spheromak's flux-conserving wall. MHD energy on open magnetic field lines is reduced, reducing magnetic fluctuation levels. A means of experimental verification is suggested that may point the way to fusion-relevant spheromaks.

E.B. Hooper; D.N. Hill; H.S. McLean; C.A. Romero-Talams; R.D. Wood

2007-01-01T23:59:59.000Z

142

Calculating Energy Flux in Internal Solitary Waves with an Application to Reflectance  

Science Journals Connector (OSTI)

The energetics of internal solitary waves (ISWs) in continuous, quasi-two-layer stratifications are explored using fully nonlinear, nonhydrostatic numerical simulations. The kinetic energy of an internal solitary wave is always greater than the ...

Kevin G. Lamb; Van T. Nguyen

2009-03-01T23:59:59.000Z

143

Measuring the Magnetic Flux Density in the CMS Steel Yoke  

E-Print Network (OSTI)

The Compact Muon Solenoid (CMS) is a general purpose detector, designed to run at the highest luminosity at the CERN Large Hadron Collider (LHC). Its distinctive features include a 4 T superconducting solenoid with 6-m-diameter by 12.5-m-length free bore, enclosed inside a 10000-ton return yoke made of construction steel. The return yoke consists of five dodecagonal three-layered barrel wheels and four end-cap disks at each end comprised of steel blocks up to 620 mm thick, which serve as the absorber plates of the muon detection system. Accurate characterization of the magnetic field everywhere in the CMS detector is required. To measure the field in and around the steel, a system of 22 flux-loops and 82 3-D Hall sensors is installed on the return yoke blocks. Fast discharges of the solenoid (190 s time-constant) made during the CMS magnet surface commissioning test at the solenoid central fields of 2.64, 3.16, 3.68 and 4.01 T were used to induce voltages in the flux-loops. The voltages are measured on-line and integrated off-line to obtain the magnetic flux in the steel yoke close to the muon chambers at full excitations of the solenoid. The 3-D Hall sensors installed on the steel-air interfaces give supplementary information on the components of magnetic field and permit to estimate the remanent field in steel to be added to the magnetic flux density obtained by the voltages integration. A TOSCA 3-D model of the CMS magnet is developed to describe the magnetic field everywhere outside the tracking volume measured with the field-mapping machine. The results of the measurements and calculations are presented, compared and discussed.

V. I. Klyukhin; N. Amapane; A. Ball; B. Cur; A. Gaddi; H. Gerwig; A. Herv; M. Mulders; R. Loveless

2012-12-06T23:59:59.000Z

144

Be7(p,gamma)B8 and the high-energy solar neutrino flux  

E-Print Network (OSTI)

The importance of the Be7(p,gamma)B8 reaction in predicting the high-energy solar neutrino flux is discussed. I present a microscopic eight-body model and a potential model for the calculation of the Be7(p,gamma)B8 cross section.

Attila Csoto

1997-04-23T23:59:59.000Z

145

Sputter roughening instability on the Ge(001) surface: Energy and flux dependence  

SciTech Connect

We have measured surface roughening kinetics during low energy Xe ion sputtering of Ge (001) surfaces. Results are interpreted in terms of an instability theory developed by Bradley and Harper. Although the calculated magnitude of the roughening rate does not agree with the measured value, the variation of the rate with ion flux and energy is on agreement with the theory.

Chason, E.; Mayer, T.M.; Kellerman, B.K.

1995-12-31T23:59:59.000Z

146

Genome Informatics 13: 363364 (2002) 363 Exploring Flux Distribution Profiles for Switching  

E-Print Network (OSTI)

, negative for substrate uptake and zero for intermediate li,ui = lower and upper bounds for the net is then calculated by optimizing a particular objective. Herein, various objective functions can be used to identify of metabolite i in reaction j bi = net transport flux of metabolite i; positive value for product secretion

147

The Total Meridional Heat Flux and Its Oceanic and Atmospheric Partition CARL WUNSCH  

E-Print Network (OSTI)

model residual is done to permit calculation of a preliminary uncertainty estimate for the atmospheric the oceanic flux drops rapidly, but does not actually vanish until the oceanic surface area goes to zero The partitioning and fluctuations in the net poleward transport of heat (energy, actually enthalpy; see War- ren

Wunsch, Carl

148

Intensity of Upward Muon Flux Due to Cosmic-Ray Neutrinos Produced in the Atmosphere  

DOE R&D Accomplishments (OSTI)

Calculations were performed to determine the upward going muon flux leaving the earth's surface after production by cosmic-ray neutrinos in the crust. Only neutrinos produced in the earth's atmosphere are considered. Rates of the order of one per 100 sq m/day might be expected if an intermediate boson exists and has a mass less than 2 Bev. (auth)

Lee, T. D.; Robinson, H.; Schwartz, M.; Cool, R.

1963-06-00T23:59:59.000Z

149

Jobs Calculator | Department of Energy  

Energy Savers (EERE)

Jobs Calculator Jobs Calculator owipjobscalculatorv11-0.xls More Documents & Publications bbanxxxxxxxpmcprogressreport2y12qx.xlsx Job Counting Guidelines Title...

150

Horizontal well IPR calculations  

SciTech Connect

This paper presents the calculation of near-wellbore skin and non-Darcy flow coefficient for horizontal wells based on whether the well is drilled in an underbalanced or overbalanced condition, whether the well is completed openhole, with a slotted liner, or cased, and on the number of shots per foot and phasing for cased wells. The inclusion of mechanical skin and the non-Darcy flow coefficient in previously published horizontal well equations is presented and a comparison between these equations is given. In addition, both analytical and numerical solutions for horizontal wells with skin and non-Darcy flow are presented for comparison.

Thomas, L.K.; Todd, B.J.; Evans, C.E.; Pierson, R.G.

1996-12-31T23:59:59.000Z

151

Countercurrent flow limited (CCFL) heat flux in the high flux isotope reactor (HFIR) fuel element  

SciTech Connect

The countercurrent flow (CCF) performance in the fuel element region of the HFIR is examined experimentally and theoretically. The fuel element consists of two concentric annuli filled with aluminum clad fuel plates of 1.27 mm thickness separated by 1.27 mm flow channels. The plates are curved as they go radially outward to accomplish constant flow channel width and constant metal-to-coolant ratio. A full-scale HFIR fuel element mock-up is studied in an adiabatic air-water CCF experiment. A review of CCF models for narrow channels is presented along with the treatment of CCFs in system of parallel channels. The experimental results are related to the existing models and a mechanistic model for the annular'' CCF in a narrow channel is developed that captures the data trends well. The results of the experiment are used to calculate the CCFL heat flux of the HFIR fuel assembly. It was determined that the HFIR fuel assembly can reject 0.62 Mw of thermal power in the CCFL situation. 31 refs., 17 figs.

Ruggles, A.E.

1990-10-12T23:59:59.000Z

152

Use of sensitivity and uncertainty analysis in reactor design verification Part II: Flux measurement analysis  

Science Journals Connector (OSTI)

Abstract As for any new reactor design, the ACR-1000 design has to go through a comprehensive design verification process. One of the activities for supporting the ACR physics design calculations using the ACR physics code toolset, namely WIMS-AECL/DRAGON/RFSP, is to compare the flux distributions resulting from the calculation using this toolset at various power calibration monitor (PCM) detector locations against the flux measurement data from the Japanese Advanced Thermal Reactor (ATR) FUGEN. The discussion of this particular design verification exercise will be presented in a two-part paper. The usage of data from the FUGEN reactor qualifies this exercise as design verification by alternate analysis. In order to have meaningful results at the end of the design verification process, the similarity between the ACR-1000 and FUGEN reactors has to be demonstrated. It is accomplished through the sensitivity and uncertainty analysis using the TSUNAMI (Tools for Sensitivity and Uncertainty Analysis Methodology Implementation) methodology. The results from the similarity comparison have been presented in Part I of the paper. In Part II, results from flux distribution comparison will be presented. Favourable results from this design verification exercise give a high level of confidence that using the same physics toolset in calculating the flux distribution for ACR-1000 reactor will produce results with acceptable fidelity. In addition, the results will also give an indication of expected margins in the design calculations, not only at the locations of the PCM detectors but also at the derived bundle and channel powers obtained through the flux mapping calculation.

Doddy Kastanya; Mohamed Dahmani

2013-01-01T23:59:59.000Z

153

RAPID DETAILED BALANCE CALCULATIONS FOR MULTIPLE ENERGY GAP SOLAR CELLS S. P. Bremner, M. Y. Levy, C. B. Honsberg  

E-Print Network (OSTI)

of a particular solar cell design providing a framework for assessing novel device designs [5,6] and a guide. This method uses Incomplete Riemann Zeta Integrals as a replacement for the Bose-Einstein integral when as blackbodies with the fluxes given by the so called Bose-Einstein integral. The calculation of these fluxes

Honsberg, Christiana

154

Exergy of boson and fermion fluxes  

Science Journals Connector (OSTI)

Particles with zero and non-zero rest mass are considered in both the classical and ultra-relativistic limits. Relationships that may be used for both fermions and bosons are derived. The exergy flux of free particles involves an efficiency-like factor affecting the energy flux. This factor contains the ambient temperature and the effective particle flux temperature and it is generally different from both the usual Carnot factor and the Petela factor appearing in the exergy of blackbody radiation fluxes, respectively. Some particular cases considered here show that free Fermi particles carry less available work than Bose particles and that the classical approximation yields higher values of the efficiency-like factors than the ultra-relativistic assumption.

Viorel Badescu

2009-01-01T23:59:59.000Z

155

Dynamical Collective Calculation of Supernova Neutrino Signals  

SciTech Connect

We present the first calculations with three flavors of collective and shock wave effects for neutrino propagation in core-collapse supernovae using hydrodynamical density profiles and the S matrix formalism. We explore the interplay between the neutrino-neutrino interaction and the effects of multiple resonances upon the time signal of positrons in supernova observatories. A specific signature is found for the inverted hierarchy and a large third neutrino mixing angle and we predict, in this case, a dearth of lower energy positrons in Cherenkov detectors midway through the neutrino signal and the simultaneous revelation of valuable information about the original fluxes. We show that this feature is also observable with current generation neutrino detectors at the level of several sigmas.

Gava, Jerome; Kneller, James; Volpe, Cristina; McLaughlin, G. C. [Institut de Physique Nucleaire, F-91406 Orsay cedex, CNRS/IN2P3 and University of Paris-XI (France); Department of Physics, North Carolina State University, Raleigh, North Carolina 27695-8202 (United States)

2009-08-14T23:59:59.000Z

156

Angular Size-Redshift: Experiment and Calculation  

E-Print Network (OSTI)

In this paper the next attempt is made to clarify the nature of the Euclidean behavior of the boundary in the angular size-redshift cosmological test. It is shown experimentally that this can be explained by the selection determined by anisotropic morphology and anisotropic radiation of extended radio sources. A catalogue of extended radio sources with minimal flux densities of about 0.01 Jy at 1.4 GHz was compiled for conducting the test. Without the assumption of their size evolution, the agreement between the experiment and calculation was obtained both in the Lambda CDM model (Omega_m=0.27 , Omega_v=0.73.) and the Friedman model (Omega = 0.1 ).

Amirkhanyan, V R

2015-01-01T23:59:59.000Z

157

A Calculable Toy Model of the Landscape  

E-Print Network (OSTI)

Motivated by recent discussions of the string-theory landscape, we propose field-theoretic realizations of models with large numbers of vacua. These models contain multiple U(1) gauge groups, and can be interpreted as deconstructed versions of higher-dimensional gauge theory models with fluxes in the compact space. We find that the vacuum structure of these models is very rich, defined by parameter-space regions with different classes of stable vacua separated by boundaries. This allows us to explicitly calculate physical quantities such as the supersymmetry-breaking scale, the presence or absence of R-symmetries, and probabilities of stable versus unstable vacua. Furthermore, we find that this landscape picture evolves with energy, allowing vacua to undergo phase transitions as they cross the boundaries between different regions in the landscape. We also demonstrate that supergravity effects are crucial in order to stabilize most of these vacua, and in order to allow the possibility of cancelling the cosmological constant.

Keith R. Dienes; Emilian Dudas; Tony Gherghetta

2005-04-22T23:59:59.000Z

158

Micromorphic Balances and Source-flux Duality  

SciTech Connect

This is a further note on the (Gauss-Maxwell) force-flux construct proposed previously (Goddard, J. D., A note on Eringen's moment balances, Int. J. Eng. Sci., in the press, 2011). Motivated in part by its promise as a homogenization technique for constructing micromorphic continua, the present work is focused rather on some additional representations and on novel applications, such as the derivation of dissipative thermodynamic potentials from force-flux relations.

Goddard, J. D. [Department of Mechanical and Aerospace Engineering, University of California, San Diego 9500 Gilman Drive, La Jolla, CA 92093-0411 (United States)

2011-11-29T23:59:59.000Z

159

Soft pion emission from fat flux tubes  

SciTech Connect

The emission of pions from multiquark flux tubes is examined as an explanation of the soft pion puzzle. Although the soft pion spectra from the decay of fat flux tubes can account for some low {ital p}{sub {perpendicular}} enhancement, the dependence on the number of involved quarks is too weak to provide a plausible explanation of the observed enhancement in the pion spectrum at low transverse momenta.

Kusnezov, D.; Danielewicz, P. (National Superconducting Cyclotron Laboratory and Department of Physics Astronomy, Michigan State University, East Lansing, Michigan (USA))

1991-08-01T23:59:59.000Z

160

NUMERICAL EXPERIMENTS ON THE TWO-STEP EMERGENCE OF TWISTED MAGNETIC FLUX TUBES IN THE SUN  

SciTech Connect

We present the new results of the two-dimensional numerical experiments on the cross-sectional evolution of a twisted magnetic flux tube rising from the deeper solar convection zone (-20,000 km) to the corona through the surface. The initial depth is 10 times deeper than most of the previous calculations focusing on the flux emergence from the uppermost convection zone. We find that the evolution is illustrated by the following two-step process. The initial tube rises due to its buoyancy, subject to aerodynamic drag due to the external flow. Because of the azimuthal component of the magnetic field, the tube maintains its coherency and does not deform to become a vortex roll pair. When the flux tube approaches the photosphere and expands sufficiently, the plasma on the rising tube accumulates to suppress the tube's emergence. Therefore, the flux decelerates and extends horizontally beneath the surface. This new finding owes to our large-scale simulation, which simultaneously calculates the dynamics within the interior as well as above the surface. As the magnetic pressure gradient increases around the surface, magnetic buoyancy instability is triggered locally and, as a result, the flux rises further into the solar corona. We also find that the deceleration occurs at a higher altitude than assumed in our previous experiment using magnetic flux sheets. By conducting parametric studies, we investigate the conditions for the two-step emergence of the rising flux tube: field strength {approx}> 1.5 x 10{sup 4} G and the twist {approx}> 5.0 x 10{sup -4} km{sup -1} at -20,000 km depth.

Toriumi, S.; Yokoyama, T., E-mail: toriumi@eps.s.u-tokyo.ac.jp [Department of Earth and Planetary Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)

2011-07-10T23:59:59.000Z

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

Magnetic flux noise in q-bits and SQUIDS from primordial density fluctuations  

E-Print Network (OSTI)

The understanding of the origin of $1/f$ magnetic flux noise commonly observed in superconducting devices such as SQUIDS and q-bits is still a major unsolved puzzle. Here we show that a significant part of the flux noise in superconducting Josephson devices may have a cosmological origin: As the Earth moves through a surrounding axionic dark matter condensate that has conserved the primordial power spectrum of density fluctuations, spatial fluctuations of the axion misalignment angle generate mirror temporal fluctuations of the superconducting phase difference in the junction. Our theory predicts the existence of flux noise with a power spectrum given by an $1/f^{2-n_s}$ spectrum, where $n_s=0.96$ is the spectral index of the near-scale invariant primordial density fluctuations. For the typical amplitude of this cosmologically generated universal flux noise we theoretically calculate the average value $\\delta \\Phi /\\Phi_0 =3.37 \\cdot 10^{-6}$ at 1Hz. These theoretical predictions are in excellent agreement with recent low-frequency flux noise measurements of various experimental groups. Magnetic flux noise, so far mainly considered as a nuisance for electronic devices, may thus contain valuable information about fluctuation spectra in the very early universe.

Christian Beck

2014-09-16T23:59:59.000Z

162

CRAD, Fire Protection - Oak Ridge National Laboratory High Flux...  

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

Fire Protection - Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Fire Protection - Oak Ridge National Laboratory High Flux Isotope Reactor February 2006 A section of...

163

CRAD, Engineering - Oak Ridge National Laboratory High Flux Isotope...  

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

Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Engineering - Oak Ridge National Laboratory High Flux Isotope Reactor February 2007 A section of Appendix C to DOE G...

164

CRAD, Maintenance - Oak Ridge National Laboratory High Flux Isotope...  

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

Maintenance - Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Maintenance - Oak Ridge National Laboratory High Flux Isotope Reactor February 2007 A section of...

165

CRAD, Nuclear Safety - Oak Ridge National Laboratory High Flux...  

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

Nuclear Safety - Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Nuclear Safety - Oak Ridge National Laboratory High Flux Isotope Reactor February 2007 A section of...

166

CRAD, Safety Basis - Oak Ridge National Laboratory High Flux...  

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

Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR CRAD, Safety Basis - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR February 2007 A...

167

CRAD, Engineering - Oak Ridge National Laboratory High Flux Isotope...  

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

Engineering - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR CRAD, Engineering - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR...

168

CRAD, Maintenance - Oak Ridge National Laboratory High Flux Isotope...  

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

Maintenance - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR CRAD, Maintenance - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR...

169

CRAD, Management- Oak Ridge National Laboratory High Flux Isotope...  

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

Management- Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Management- Oak Ridge National Laboratory High Flux Isotope Reactor February 2007 A section of Appendix C...

170

John Hsu, Oak Ridge National Laboratory, Flux Coupling Machines...  

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

& Publications Integration of Novel Flux Coupling Motor and Current Source Inverter Integration of Novel Flux Coupling Motor and Current Source Inverter Electric Machine R&D...

171

Novel Flux Coupling Machine without Permanent Magnets - U Machine...  

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

Novel Flux Coupling Machine without Permanent Magnets - U Machine Novel Flux Coupling Machine without Permanent Magnets - U Machine 2009 DOE Hydrogen Program and Vehicle...

172

Measurement of advective soil gas flux: Results of field and...  

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

Measurement of advective soil gas flux: Results of field and laboratory experiments with CO2. Measurement of advective soil gas flux: Results of field and laboratory experiments...

173

Calculation of Accurate Hexagonal Discontinuity Factors for PARCS  

SciTech Connect

In this study we derive a methodology for calculating discontinuity factors consistent with the Triangle-based Polynomial Expansion Nodal (TPEN) method implemented in PARCS for hexagonal reactor geometries. The accuracy of coarse-mesh nodal methods is greatly enhanced by permitting flux discontinuities at node boundaries, but the practice of calculating discontinuity factors from infinite-medium (zero-current) single bundle calculations may not be sufficiently accurate for more challenging problems in which there is a large amount of internodal neutron streaming. The authors therefore derive a TPEN-based method for calculating discontinuity factors that are exact with respect to generalized equivalence theory. The method is validated by reproducing the reference solution for a small hexagonal core.

Pounders. J., Bandini, B. R. , Xu, Y, and Downar, T. J.

2007-11-01T23:59:59.000Z

174

A computer program for HVDC converter station RF noise calculations  

SciTech Connect

HVDC converter station operations generate radio frequency (RF) electromagnetic (EM) noise which could interfere with adjacent communication and computer equipment, and carrier system operations. A generic Radio Frequency Computer Analysis Program (RAFCAP) for calculating the EM noise generated by valve ignition of a converter station has been developed as part of a larger project. The program calculates RF voltages, currents, complex power, ground level electric field strength and magnetic flux density in and around an HVDC converter station. The program requires the converter station network to be represented by frequency dependent impedance functions. Comparisons of calculated and measured values are given for an actual HVDC station to illustrate the validity of the program. RAFCAP is designed to be used by engineers for the purpose of calculating the RF noise produced by the igniting of HVDC converter valves.

Kasten, D.G.; Caldecott, R.; Sebo, S.A. (Ohio State Univ., Columbus, OH (United States). Dept. of Electrical Engineering); Liu, Y. (Virginia Polytechnic Inst. State Univ., Blacksburg, VA (United States). Bradley Dept. of Electrical Engineering)

1994-04-01T23:59:59.000Z

175

BTRIC - Tools & Calculators - ORNL  

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

Calculators Calculators Attic Radiant Barrier Calculator Low-Slope Roof Calculator for Commercial Buildings (6/05) - estimates annual energy cost savings Moisture Control for Low-Slope Roofing (5/04) - determine if a roof design needs a vapor retarder or if the roofing system can be modified to enhance its tolerance for small leaks Modified Zone Method Roof Savings Calculator (12/12) - for commerical and residential buildings using whole-building energy simulations Solar Reflectance Index (SRI) Calculator (6/06) Steep-Slope Roof Calculator on Residential Buildings (6/05) - estimate annual energy cost savings Whole-Wall R-Value Calculator 2.0 (10/06) ZIP-Code R-Value Recommendation Calculator (1/08) Roofs/Attics Attic Radiant Barrier Fact Sheet (Jan 2011) Cool Roofs Will Revolutionize the Building Industry Fact Sheet

176

{sup 36}Cl measurements of the unsaturated zone flux at Yucca Mountain  

SciTech Connect

Determining the unsaturated zone percolation rate, or flux, is an extremely important site characterization issue for the proposed Yucca Mountain nuclear waste repository. A new technique that measures the {sup 36}Cl content of tuff from the Exploratory Shaft will be used to calculate flux through the unsaturated zone over longer times than could be measured by the more conventional {sup 14}C method. Measurements of the {sup 36}Cl "bomb pulse" in soil samples from Yucca Mountain have been used to confirm that infiltration is not an important recharge mechanism. 5 refs., 3 figs.

Norris, A.E.; Wolfsberg, K.; Gifford, S.K.

1985-12-31T23:59:59.000Z

177

A Pin Power Reconstruction Method for CANDU Reactor Cores Based on Coarse-Mesh Finite Difference Calculations  

SciTech Connect

A reconstruction method has been developed for recovering pin powers from Canada deuterium uranium (CANDU) reactor core calculations performed with a coarse-mesh finite difference diffusion approximation and single-assembly lattice calculations. The homogeneous intranodal distributions of group fluxes are efficiently computed using polynomial shapes constrained to satisfy the nodal information approximated from the node-average fluxes. The group fluxes of individual fuel pins in a heterogeneous fuel bundle are determined using these homogeneous intranodal flux distributions and the form functions obtained from the single-assembly lattice calculations. The pin powers are obtained using these pin fluxes and the pin power cross sections generated by the single-assembly lattice calculation. The accuracy of the reconstruction schemes has been estimated by performing benchmark calculations for partial core representation of a natural uranium CANDU reactor. The results indicate that the reconstruction schemes are quite accurate, yielding maximum pin power errors of less than {approx}3%. The main contribution to the reconstruction error is made by the errors in the node-average fluxes obtained from the coarse-mesh finite difference diffusion calculation; the errors due to the reconstruction schemes are <1%.

Lee, Hyung-Seok [Chosun University (Korea, Republic of); Yang, Won Sik [Chosun University (Korea, Republic of); Na, Man Gyun [Chosun University (Korea, Republic of); Choi, Hangbok [Korea Atomic Energy Research Institute (Korea, Republic of)

2000-04-15T23:59:59.000Z

178

Formation of a flux core spheromak  

Science Journals Connector (OSTI)

An alternate design for compact tori specifically of the spheromak type is studied. In this design the flux core spheromak [Nucl. Fusion 29 219 (1989)] the externally imposed bias field links the confinement region of closed flux surfaces. The advantages of this configuration are: (i) it enjoys greater stability to magnetohydrodynamic (MHD) modes particularly the tilt and shift; (ii) it has a poloidal divertor and an amount of poloidal flux separating the closed flux surface region from the walls; and (iii) it might be sustained by helicity injection. Results are presented showing the dependence of the geometry on the distribution of bias flux on the conducting walls and showing the optimization of the 2?D formation scheme to minimize the contact of the plasma with coils electrodes and walls. This last topic involves taking advantage of current sheet formation and subsequent tearing as in formation of the MS spheromak [Phys. Fluids 28 3154 (1985)]. The parameters which can be varied to produce this favorable formation scheme via tearing rather than a formation that proceeds off the reversal coils are explored. In addition it is found that there is strong viscous heating of the ions in this early reconnection phase.

John M. Finn; Parvez N. Guzdar

1991-01-01T23:59:59.000Z

179

ENRAF gauge reference level calculations  

SciTech Connect

This document describes the method for calculating reference levels for Enraf Series 854 Level Detectors as installed in the tank farms. The reference level calculation for each installed level gauge is contained herein.

Huber, J.H., Fluor Daniel Hanford

1997-02-06T23:59:59.000Z

180

Naming chemical compounds: Calculator drill  

Science Journals Connector (OSTI)

36. Bits and pieces, 13. A calculator can be programmed to drill students on chemical compound naming rules.

David Holdsworth; Evelyn Lacanienta

1983-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

Color Magnetic Flux Tubes in Dense QCD  

E-Print Network (OSTI)

QCD is expected to be in the color-flavor locking phase in high baryon density, which exhibits color superconductivity. The most fundamental topological objects in the color superconductor are non-Abelian vortices which are topologically stable color magnetic flux tubes. We present numerical solutions of the color magnetic flux tube for diverse choices of the coupling constants. We also analytically study its asymptotic profiles and find that they are different from the case of usual superconductors. We propose the width of color magnetic fluxes and find that it is larger than naive expectation of the Compton wave length of the massive gluon when the gluon mass is larger than the scalar mass.

Minoru Eto; Muneto Nitta

2009-07-07T23:59:59.000Z

182

Color magnetic flux tubes in dense QCD  

SciTech Connect

QCD is expected to be in the color-flavor locking phase in high baryon density, which exhibits color superconductivity. The most fundamental topological objects in the color superconductor are non-Abelian vortices which are topologically stable color magnetic flux tubes. We present numerical solutions of the color magnetic flux tube for diverse choices of the coupling constants based on the Ginzburg-Landau Lagrangian. We also analytically study its asymptotic profiles and find that they are different from the case of usual superconductors. We propose the width of color magnetic fluxes and find that it is larger than naive expectation of the Compton wavelength of the massive gluon when the gluon mass is larger than the scalar mass.

Eto, Minoru [Theoretical Physics Laboratory, RIKEN, Saitama 351-0198 (Japan); Nitta, Muneto [Department of Physics, and Research and Education Center for Natural Sciences, Keio University, 4-1-1 Hiyoshi, Yokohama, Kanagawa 223-8521 (Japan)

2009-12-15T23:59:59.000Z

183

Plasma momentum meter for momentum flux measurements  

DOE Patents (OSTI)

Invention comprises an instrument in which momentum flux onto a biasable target plate is transferred via a suspended quartz tube onto a sensitive force transducer--a capacitance-type pressure gauge. The transducer is protected from thermal damage, arcing and sputtering, and materials used in the target and pendulum are electrically insulating, rigid even at elevated temperatures, and have low thermal conductivity. The instrument enables measurement of small forces (10.sup.-5 to 10.sup.3 N) accompanied by high heat fluxes which are transmitted by energetic particles with 10's of eV of kinetic energy in a intense magnetic field and pulsed plasma environment.

Zonca, Fulvio (Rome, IT); Cohen, Samuel A. (Hopewell, NJ); Bennett, Timothy (Princeton, NJ); Timberlake, John R. (Allentown, NJ)

1993-01-01T23:59:59.000Z

184

2050 Calculator | Open Energy Information  

Open Energy Info (EERE)

0 Calculator 0 Calculator Jump to: navigation, search Tool Summary LAUNCH TOOL Name: 2050 Calculator Agency/Company /Organization: United Kingdom Department of Energy and Climate Change (DECC) Sector: Climate, Energy Focus Area: Renewable Energy, Non-renewable Energy, Biomass, Buildings - Commercial, Buildings - Residential, Economic Development, Geothermal, Greenhouse Gas, Multi-model Integration, Multi-sector Impact Evaluation, Solar, Wind Phase: Evaluate Options, Develop Goals, Prepare a Plan Topics: Analysis Tools, Pathways analysis Resource Type: Online calculator User Interface: Spreadsheet, Website Complexity/Ease of Use: Not Available Website: www.gov.uk/2050-pathways-analysis Country: United Kingdom Web Application Link: 2050-calculator-tool.decc.gov.uk/pathways/1111111111111111111111111111

185

A Look Inside the Cash Flow Opportunity Calculator: Calculations and  

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

A Look Inside the Cash Flow Opportunity Calculator: Calculations A Look Inside the Cash Flow Opportunity Calculator: Calculations and Methodology Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources

186

2, 181212, 2002 The flux of carbonyl  

E-Print Network (OSTI)

, coal combustion, sulfur recovery, etc.), and is removed by terrestrial vegetation, soils, pho-25/181/ c European Geophysical Society 2002 Atmospheric Chemistry and Physics Discussions The flux, 60054 Frankfurt am Main, Germany * now at Max Planck Institute for Chemistry, Mainz, Germany Received: 9

Paris-Sud XI, Université de

187

6, 52515268, 2006 Turbulent fluxes over  

E-Print Network (OSTI)

´exico, 04510 Mexico City, Mexico Received: 24 March 2006 ­ Accepted: 10 May 2006 ­ Published: 26 June 2006 wind speed conditions (up to 25 ms -1 ). The estimates of total momentum flux and turbulent kinetic energy can be represented very5 accurately (r2 =0.99, when data are binned every 1 ms-1 ) by empirical

Boyer, Edmond

188

Impulsive Flux Transfer Events and Solar Flares  

Science Journals Connector (OSTI)

......s-'. (v) Restoration of magneticfield...flux) into the system. To quotefrom...waves across the system. The impulsive...leadingto the restoration of the normal...state or in the power required to maintain...on the global system size), the...A., 1964. Handbook o f mathematicalfunctions......

A. Bratenahl; P. J. Baum

1976-08-01T23:59:59.000Z

189

Flux Power Incorporated | Open Energy Information  

Open Energy Info (EERE)

Flux Power Incorporated Flux Power Incorporated Jump to: navigation, search Name Flux Power Incorporated Place Vista, California Zip 92081 Product California-based FLux Ppower was created in late-2009 to provide monitoring, diagnostics and charging technology aimed at extending the life of lithium-ion batteries. The company signed a supply deal with Wheego in January 2010. Coordinates 37.989712°, -93.665689° 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":37.989712,"lon":-93.665689,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

190

Energy and Energy Flux in Planetary Waves  

Science Journals Connector (OSTI)

...research-article Energy and Energy Flux in Planetary Waves V. T. Buchwald The propagation...a thorough study of the energy of these waves in the plane approximation...case of divergent planetary waves, the total energy density being E = T + U...

1972-01-01T23:59:59.000Z

191

Global nuclear-structure calculations  

SciTech Connect

The revival of interest in nuclear ground-state octupole deformations that occurred in the 1980's was stimulated by observations in 1980 of particularly large deviations between calculated and experimental masses in the Ra region, in a global calculation of nuclear ground-state masses. By minimizing the total potential energy with respect to octupole shape degrees of freedom in addition to {epsilon}{sub 2} and {epsilon}{sub 4} used originally, a vastly improved agreement between calculated and experimental masses was obtained. To study the global behavior and interrelationships between other nuclear properties, we calculate nuclear ground-state masses, spins, pairing gaps and {Beta}-decay and half-lives and compare the results to experimental qualities. The calculations are based on the macroscopic-microscopic approach, with the microscopic contributions calculated in a folded-Yukawa single-particle potential.

Moeller, P.; Nix, J.R.

1990-04-20T23:59:59.000Z

192

Wavelets in electronic structure calculations  

Science Journals Connector (OSTI)

A three-dimensional wavelet analysis is employed to develop a new formalism for electronic structure calculations. The wavelet formalism provides a systematically improvable and tractable description of electronic wave functions and overcomes limitations of conventional basis expansions. The potential power of the wavelet formalism for ab initio electronic structure calculations is demonstrated by a calculation of 1s states for all the naturally occurring nuclei on the periodic table and the interaction energies of the hydrogen molecule ion.

K. Cho, T. A. Arias, J. D. Joannopoulos, and Pui K. Lam

1993-09-20T23:59:59.000Z

193

Energy Flux We discuss various ways of describing energy flux and related quantities.  

E-Print Network (OSTI)

.0.4 Radiance Radiance is the energy flux density per solid angle.[W/(m2 ? steradian)] 6.0.5 Radiant Intensity Radiant intensity is the energy flux per solid angle [W/steradian] (radiometry) 6.0.6 Intensity Intensity)· ^Ndt (6.4) Intensity is again measured in [W/m2 ] 6.0.7 Fluence Fluence is radiant energy per area

Palffy-Muhoray, Peter

194

Flow instabilities of magnetic flux tubes IV. Flux storage in the solar overshoot region  

E-Print Network (OSTI)

We consider the effects of material flows on the dynamics of toroidal magnetic flux tubes located close to the base of the solar convection zone, initially within the overshoot region. The problem is to find the physical conditions in which magnetic flux can be stored for periods comparable to the dynamo amplification time, which is of the order of a few years. We carry out nonlinear numerical simulations to investigate the stability and dynamics of thin flux tubes subject to perpendicular and longitudinal flows. We compare the simulations with the results of simplified analytical approximations. We determine ranges of the flow parameters for which a linearly Parker-stable magnetic flux tube is stored in the middle of the overshoot region for a period comparable to the dynamo amplification time. The residence time for magnetic flux tubes with fluxes of 2x10^{21} Mx in the convective overshoot layer is comparable to the dynamo amplification time, provided that the average speed and the duration of the downflow...

Isik, Emre

2009-01-01T23:59:59.000Z

195

Identifying the top of the tropical tropopause layer from vertical mass flux analysis and CALIPSO lidar cloud observations  

E-Print Network (OSTI)

defined as the level of zero net radiative heating, which occurs near 14.5­15 km [e.g., Folkins et al layer (TTL) by analyzing the vertical mass flux profile based on radiative transfer calculations will rise into the stratosphere. Thus convection has to transport air at least to the zero radiative heating

Hochberg, Michael

196

Preventing xenon oscillations in Monte Carlo burnup calculations by enforcing equilibrium xenon distribution  

Science Journals Connector (OSTI)

Abstract Existing Monte Carlo burnup codes suffer from instabilities caused by spatial xenon oscillations. These oscillations can be prevented by forcing equilibrium between the neutron flux and saturated xenon distribution. The equilibrium calculation can be integrated to Monte Carlo neutronics, which provides a simple and lightweight solution that can be used with any of the existing burnup calculation algorithms. The stabilizing effect of this approach, as well as its limitations are demonstrated using the reactor physics code Serpent.

A.E. Isotalo; J. Leppnen; J. Dufek

2013-01-01T23:59:59.000Z

197

High Flux Isotope Reactor power upgrade status  

SciTech Connect

A return to 100-MW operation is being planned for the High Flux Isotope Reactor (HFIR). Recent improvements in fuel element manufacturing procedures and inspection equipment will be exploited to reduce hot spot and hot streak factors sufficiently to permit the power upgrade without an increase in primary coolant pressure. Fresh fuel elements already fabricated for future use are being evaluated individually for power upgrade potential based on their measured coolant channel dimensions.

Rothrock, R.B.; Hale, R.E. [Oak Ridge National Lab., TN (United States); Cheverton, R.D. [Delta-21 Resources Inc., Oak Ridge, TN (United States)

1997-03-01T23:59:59.000Z

198

Heat flux dynamics in dissipative cascaded systems  

E-Print Network (OSTI)

We study the dynamics of heat flux in the thermalization process of a pair of identical quantum system that interact dissipatively with a reservoir in a {\\it cascaded} fashion. Despite the open dynamics of the bipartite system S is globally Lindbladian, one of the subsystems "sees" the reservoir in a state modified by the interaction with the other subsystem and hence it undergoes a non-Markovian dynamics. As a consequence, the heat flow exhibits a non-exponential time behaviour which can greatly deviate from the case where each party is independently coupled to the reservoir. We investigate both thermal and correlated initial states of $S$ and show that the presence of correlations at the beginning can considerably affect the heat flux rate. We carry out our study in two paradigmatic cases -- a pair of harmonic oscillators with a reservoir of bosonic modes and two qubits with a reservoir of fermionic modes -- and compare the corresponding behaviours. In the case of qubits and for initial thermal states, we find that the trace distance discord is at any time interpretable as the correlated contribution to the total heat flux.

Salvatore Lorenzo; Alessandro Farace; Francesco Ciccarello; G. Massimo Palma; Vittorio Giovannetti

2014-12-19T23:59:59.000Z

199

Calculation  

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

complimentary copy. Redistribution subject to AIP license or copyright, see http:php.aip.orgphpcopyright.jsp are sizable. The same approach can be used in other appli-...

200

CRAD, Safety Basis - Oak Ridge National Laboratory High Flux...  

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

Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Safety Basis - Oak Ridge National Laboratory High Flux Isotope Reactor February 2007 A section of Appendix C to DOE G...

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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.
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201

Surface heat fluxes in the Western Equatorial Pacific Ocean  

Science Journals Connector (OSTI)

Estimates of the components of the surface heat flux in the Western Equatorial Pacific Ocean are presented for a 22-day period, ... found that the net heat flux into the ocean over the 22-day period is not...

N. C. Wells

1995-10-01T23:59:59.000Z

202

Energy Flux and Wavelet Diagnostics of Secondary Mountain Waves  

Science Journals Connector (OSTI)

In recent years, aircraft data from mountain waves have been primarily analyzed using velocity and temperature power spectrum and momentum flux estimation. Herein it is argued that energy flux wavelets (i.e., pressurevelocity wavelet cross-...

Bryan K. Woods; Ronald B. Smith

2010-11-01T23:59:59.000Z

203

Gas Flux Sampling At Long Valley Caldera Geothermal Area (Lewicki...  

Open Energy Info (EERE)

Flux Sampling Activity Date - 2008 Usefulness useful DOE-funding Unknown Notes "CO2 and heat fluxes were measured over a six-week period (09082006 to 10242006) by the eddy...

204

High Flux Isotope Reactor (HFIR) | Nuclear Science | ORNL  

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

High Flux Isotope Reactor High Flux Isotope Reactor May 30, 2013 The High Flux Isotope Reactor (HFIR) first achieved criticality on August 25, 1965, and achieved full power in August 1966. It is a versatile 85-MW isotope production, research, and test reactor with the capability and facilities for performing a wide variety of irradiation experiments and a world-class neutron scattering science program. HFIR is a beryllium-reflected, light water-cooled and moderated flux-trap type swimming pool reactor that uses highly enriched uranium-235 as fuel. HFIR typically operates seven 23-to-27 day cycles per year. Irradiation facility capabilities include Flux trap positions: Peak thermal flux of 2.5X1015 n/cm2/s with similar epithermal and fast fluxes (Highest thermal flux available in the

205

Estimating Internal Wave Energy Fluxes in the Ocean  

Science Journals Connector (OSTI)

Energy flux is a fundamental quantity for understanding internal wave generation, propagation, and dissipation. In this paper, the estimation of internal wave energy fluxes ?u?p?? from ocean observations that may be sparse in either time or depth ...

Jonathan D. Nash; Matthew H. Alford; Eric Kunze

2005-10-01T23:59:59.000Z

206

Boosted Fast Flux Loop Final Report  

SciTech Connect

The Boosted Fast Flux Loop (BFFL) project was initiated to determine basic feasibility of designing, constructing, and installing in a host irradiation facility, an experimental vehicle that can replicate with reasonable fidelity the fast-flux test environment needed for fuels and materials irradiation testing for advanced reactor concepts. Originally called the Gas Test Loop (GTL) project, the activity included (1) determination of requirements that must be met for the GTL to be responsive to potential users, (2) a survey of nuclear facilities that may successfully host the GTL, (3) conceptualizing designs for hardware that can support the needed environments for neutron flux intensity and energy spectrum, atmosphere, flow, etc. needed by the experimenters, and (4) examining other aspects of such a system, such as waste generation and disposal, environmental concerns, needs for additional infrastructure, and requirements for interfacing with the host facility. A revised project plan included requesting an interim decision, termed CD-1A, that had objectives of' establishing the site for the project at the Advanced Test Reactor (ATR) at the Idaho National Laboratory (INL), deferring the CD 1 application, and authorizing a research program that would resolve the most pressing technical questions regarding GTL feasibility, including issues relating to the use of booster fuel in the ATR. Major research tasks were (1) hydraulic testing to establish flow conditions through the booster fuel, (2) mini-plate irradiation tests and post-irradiation examination to alleviate concerns over corrosion at the high heat fluxes planned, (3) development and demonstration of booster fuel fabrication techniques, and (4) a review of the impact of the GTL on the ATR safety basis. A revised cooling concept for the apparatus was conceptualized, which resulted in renaming the project to the BFFL. Before the subsequent CD-1 approval request could be made, a decision was made in April 2006 that further funding for the project would be suspended. Remaining funds have been used to prepare and irradiate mini-plates of the proposed booster fuel. The current baseline design is for a set of three test positions inside an in-pile tube with a thermal neutron absorber and heat sink made of aluminum mixed with hafnium. Operating the ATR at power levels needed to achieve the required fast flux will result in an estimated increase in ATR fuel consumption between 15 and 20% above present rates and a reduction in the time between fuel replacements. Preliminary safety analyses conducted have indicted safe operation of the ATR with the GTL under normal, abnormal, and postulated accident conditions. More comprehensive analyses are needed.

Boosted Fast Flux Loop Project Staff

2009-09-01T23:59:59.000Z

207

THE ROLE OF A FLUX ROPE EJECTION IN A THREE-DIMENSIONAL MAGNETOHYDRODYNAMIC SIMULATION OF A SOLAR FLARE  

SciTech Connect

We investigated the dynamic evolution of a three-dimensional (3D) flux rope eruption and magnetic reconnection process in a solar flare by simply extending the two-dimensional (2D) resistive magnetohydrodynamic simulation model of solar flares with low ? plasma to a 3D model. We succeeded in reproducing a current sheet and bi-directional reconnection outflows just below the flux rope during the eruption in our 3D simulations. We calculated four cases of a strongly twisted flux rope and a weakly twisted flux rope in 2D and 3D simulations. The time evolution of a weakly twisted flux rope in the 3D simulation shows behaviors similar to those of the 2D simulation, while a strongly twisted flux rope in the 3D simulation clearly shows a different time evolution from the 2D simulation except for the initial phase evolution. The ejection speeds of both strongly and weakly twisted flux ropes in 3D simulations are larger than in the 2D simulations, and the reconnection rates in 3D cases are also larger than in the 2D cases. This indicates positive feedback between the ejection speed of a flux rope and the reconnection rate even in the 3D simulation, and we conclude that the plasmoid-induced reconnection model can be applied to 3D. We also found that small-scale plasmoids are formed inside a current sheet and make it turbulent. These small-scale plasmoid ejections have a role in locally increasing the reconnection rate intermittently as observed in solar flares, coupled with a global eruption of a flux rope.

Nishida, Keisuke; Shibata, Kazunari [Kwasan and Hida Observatories, Kyoto University, Yamashina, Kyoto 607-8471 (Japan)] [Kwasan and Hida Observatories, Kyoto University, Yamashina, Kyoto 607-8471 (Japan); Nishizuka, Naoto, E-mail: nishida@kwasan.kyoto-u.ac.jp [Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210 (Japan)] [Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210 (Japan)

2013-10-01T23:59:59.000Z

208

Large scale electronic structure calculations  

Science Journals Connector (OSTI)

We formulate the Kohn-Sham density functional theory in terms of nonorthogonal, localized orbitals. Within this formulation we introduce a simple and effective method to localize the orbitals. Our approach leads to a plane-wave-based algorithm for total energy calculations whose computational complexity is of O(N), where N is the number of electrons. This opens the way to calculations of unprecedented scale. Our method appears to be of general character and applicable in other contexts such as quantum chemical or projected quantum Monte Carlo calculations.

Giulia Galli and Michele Parrinello

1992-12-14T23:59:59.000Z

209

Gas Flux Sampling (Klein, 2007) | Open Energy Information  

Open Energy Info (EERE)

2007) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Flux Sampling (Klein, 2007) Exploration Activity Details Location Unspecified...

210

Gas Flux Sampling (Lewicki & Oldenburg, 2004) | Open Energy Informatio...  

Open Energy Info (EERE)

2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Flux Sampling (Lewicki & Oldenburg, 2004) Exploration Activity Details Location...

211

Energy flux of timeharmonic waves in anisotropic dissipative media  

E-Print Network (OSTI)

Energy flux of time­harmonic waves in anisotropic dissipative media Vlastislav Ÿ Cerven 2, Czech Republic. E­mail vcerveny@seis.karlov.m#.cuni.cz Summary The energy flux of time to consider the average energy flux, which is real­valued and time­independent. An extension

Cerveny, Vlastislav

212

SEDIMENT FLUX THROUGH THE RIO GRANDE RIVER: A MONSOONAL EFFECT  

E-Print Network (OSTI)

SEDIMENT FLUX THROUGH THE RIO GRANDE RIVER: A MONSOONAL EFFECT Troy C.Hiatt A thesis submitted University August 2010 Copyright © 2010 Troy C. Hiatt All Rights Reserved #12;ABSTRACT Sediment Flux through Climate has historically been recognized as an influence on sediment flux and deposition. The North

Seamons, Kent E.

213

Extracting the Green's function from measurements of the energy flux  

E-Print Network (OSTI)

Extracting the Green's function from measurements of the energy flux Roel Sniedera) Center for Wave in acoustics from measurements of the energy flux through an arbitrary closed surface surrounding both sources locations, rA and rB. In these experiments one first measures the total energy flux through a closed surface

Snieder, Roel

214

Spheromak reactor with poloidal flux-amplifying transformer  

DOE Patents (OSTI)

An inductive transformer in the form of a solenoidal coils aligned along the major axis of a flux core induces poloidal flux along the flux core's axis. The current in the solenoidal coil is then reversed resulting in a poloidal flux swing and the conversion of a portion of the poloidal flux to a toroidal flux in generating a spheromak plasma wherein equilibrium approaches a force-free, minimum Taylor state during plasma formation, independent of the initial conditions or details of the formation. The spheromak plasma is sustained with the Taylor state maintained by oscillating the currents in the poloidal and toroidal field coils within the plasma-forming flux core. The poloidal flux transformer may be used either as an amplifier stage in a moving plasma reactor scenario for initial production of a spheromak plasma or as a method for sustaining a stationary plasma and further heating it. The solenoidal coil embodiment of the poloidal flux transformer can alternately be used in combination with a center conductive cylinder aligned along the length and outside of the solenoidal coil. This poloidal flux-amplifying inductive transformer approach allows for a relaxation of demanding current carrying requirements on the spheromak reactor's flux core, reduces plasma contamination arising from high voltage electrode discharge, and improves the efficiency of poloidal flux injection.

Furth, Harold P. (Princeton, NJ); Janos, Alan C. (East Windsor, NJ); Uyama, Tadao (Osaka, JP); Yamada, Masaaki (Lawrenceville, NJ)

1987-01-01T23:59:59.000Z

215

Model of Trace Gas Flux in Boundary Layer  

E-Print Network (OSTI)

Mathematical model of the turbulent flux in the three-layer boundary system is presented. Turbulence is described as a presence of the nonzero vorticity. Generalized advection-diffusion-reaction equation is derived for arbitrary number components in the flux. The fluxes in the layers are objects for matching requirements on the boundaries between the layers.

I. I. Vasenev; I. S. Nurgaliev

2013-03-04T23:59:59.000Z

216

Shear fragmentation of unstable flux flow Milind N. Kunchur,1,  

E-Print Network (OSTI)

in resistivity. At high-flux densities B, the relatively incompressible vortex matter fragments into domains vortices containing an elementary quantum of flux o hc/2e. A transport cur- rent density j exerts a Lorentz film in a perpendicular applied flux density B along z^, with j and the electric field E vB/c along y

Kunchur, Milind N.

217

Hydrogen Threshold Cost Calculation | Department of Energy  

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

Hydrogen Threshold Cost Calculation Hydrogen Threshold Cost Calculation DOE Hydrogen Program Record number11007, Hydrogen Threshold Cost Calculation, documents the methodology and...

218

SB EE Calculator | Argonne National Laboratory  

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

Calculator Energy Efficiency Decision Support Calculator Argonne's Energy Efficiency Decision Support Calculator is a simple tool that small business owners can use to quickly...

219

Zero-flux planes, flux reversals and diffusion paths in ternary and quaternary diffusion  

SciTech Connect

During isothermal multicomponent diffusion, interdiffusion fluxes of individual components can go to zero at zero-flux planes (ZFP) and exhibit flux reversals from one side to the other of such planes. Interdiffusion fluxes as well as the locations and compositions of ZFPs for components are determined directly from the concentration profiles of diffusion couples without the need for prior knowledge of interdiffusion coefficients. The development and identification of ZFPs is reviewed with the aid of single phase and two-phase diffusion couples investigated in the Cu-Ni-Zn system at 775/sup 0/C. ZFP locations in the diffusion zone nearly correspond to sections where the activity of a component is the same as its activity in either of the terminal alloys of a couple. Path slopes at ZFPs are uniquely dictated by the atomic mobility and thermodynamic data for the components. Discontinuous flux reversals for the components can also occur at interfaces in multiphase couples. Identification of ZFPs is also presented for diffusion in the Cu-Ni-Zn-Mn quaternary system. Analytical representation of diffusion paths for both ternary and quaternary diffusion couples is presented with the aid of characteristic path parameters.

Dayananda, M.A.

1986-05-23T23:59:59.000Z

220

Gas Flux Sampling (Lewicki & Oldenburg) | Open Energy Information  

Open Energy Info (EERE)

Gas Flux Sampling (Lewicki & Oldenburg) Gas Flux Sampling (Lewicki & Oldenburg) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Flux Sampling (Lewicki & Oldenburg) Exploration Activity Details Location Unspecified Exploration Technique Gas Flux Sampling Activity Date Usefulness useful DOE-funding Unknown References Jennifer L. Lewicki, Curtis M. Oldenburg (Unknown) Near-Surface Co2 Monitoring And Analysis To Detect Hidden Geothermal Systems Retrieved from "http://en.openei.org/w/index.php?title=Gas_Flux_Sampling_(Lewicki_%26_Oldenburg)&oldid=508144" Categories: Exploration Activities DOE Funded Activities What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load)

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

Parametric amplification by coupled flux qubits  

SciTech Connect

We report parametric amplification of a microwave signal in a Kerr medium formed from superconducting qubits. Two mutually coupled flux qubits, embedded in the current antinode of a superconducting coplanar waveguide resonator, are used as a nonlinear element. Shared Josephson junctions provide the qubit-resonator coupling, resulting in a device with a tunable Kerr constant (up to 3??10{sup ?3}) and a measured gain of about 20?dB. This arrangement represents a unit cell which can be straightforwardly extended to a quasi one-dimensional quantum metamaterial with large tunable Kerr nonlinearity, providing a basis for implementation of wide-band travelling wave parametric amplifiers.

Rehk, M.; Neilinger, P.; Grajcar, M. [Department of Experimental Physics, Comenius University, SK-84248 Bratislava (Slovakia); Institute of Physics, Slovak Academy of Science, 845 11 Bratislava (Slovakia); Oelsner, G.; Hbner, U.; Meyer, H.-G. [Leibniz Institute of Photonic Technology, P.O. Box 100239, D-07702 Jena (Germany); Il'ichev, E. [Leibniz Institute of Photonic Technology, P.O. Box 100239, D-07702 Jena (Germany); Novosibirsk State Technical University, 20 K. Marx Ave., 630092 Novosibirsk (Russian Federation)

2014-04-21T23:59:59.000Z

222

Semiconducting glasses with flux pinning inclusions  

DOE Patents (OSTI)

A series of amorphous superconducting glassy alloys containing 1% to 10% by volume of flux pinning crystalline inclusions have been found to have potentially useful properties as high field superconducting magnet materials. The alloys are prepared by splat cooling by the piston and anvil technique. The alloys have the composition (TM).sub.90-70 (M).sub.10-30 where TM is a transition metal selected from at least one metal of Groups IVB, VB, VIB, VIIB or VIIIB of the Periodic Table such as Nb, Mo, Ru, Zr, Ta, W or Re and M is at least one metalloid such as B, P, C, N, Si, Ge or Al.

Johnson, William L. (Pasadena, CA); Poon, Siu-Joe (Palo Alto, CA); Duwez, Pol E. (Pasadena, CA)

1981-01-01T23:59:59.000Z

223

Design of a High Flux Vacuum-Ultraviolet Beamline for Circular Dichroism Experiments  

SciTech Connect

A vacuum-ultraviolet bending-magnet beamline for circular dichroism (CD) experiments has been designed. To maximize the photon flux and minimize the focused beam size, a cylindrical mirror and a cylindrical grating with independent optical functions are utilized. The beamline can collect a 30 mrad horizontal by 7 mrad vertical solid angle of synchrotron radiation. By using a 600 grooves/mm grating, the calculated photon flux is greater than 1x10{sup 13} photons/sec and the focused beam size is 0.4 mmx0.65 mm for the spectral range from 130 nm to 330 nm with the energy resolving power set at 1000. The linear polarization degree is better than 75% and can be increased to 90% by reducing the vertical acceptance angle down to 2 mrad. In addition to the high flux mode described above, this beamline can also be operated in a high resolution mode. By using a 1200 grooves/mm grating, a resolving power greater than 10,000 can be achieved for the spectral range from 180 to 330 nm. This beamline can provide photon flux as high as the best synchrotron CD beamlines in the world while offers simultaneously a smaller focused beam size.

Fu, H. W.; Fung, H. S.; Chung, S. C.; Huang, L. J.; Chen, C. T. [National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan (China)

2010-06-23T23:59:59.000Z

224

The Role and Detectability of the Charm Contribution to Ultra High Energy Neutrino Fluxes  

E-Print Network (OSTI)

It is widely believed that charm meson production and decay may play an important role in high energy astrophysical sources of neutrinos, especially those that are baryon-rich, providing an environment conducive to pp interactions. Using slow-jet supernovae (SJS) as an example of such a source, we study the detectability of high-energy neutrinos, paying particular attention to those produced from charmed-mesons. We highlight important distinguishing features in the ultra-high energy neutrino flux which would act as markers for the role of charm in the source. In particular, charm leads to significant event rates at higher energies, after the conventional (pi, K) neutrino fluxes fall off. We calculate event rates both for a nearby single source and for diffuse SJS fluxes for an IceCube-like detector. By comparing muon event rates for the conventional and prompt fluxes in different energy bins, we demonstrate the striking energy dependence in the rates induced by the presence of charm. We also show that it lead...

Gandhi, Raj; Watanabe, Atsushi

2009-01-01T23:59:59.000Z

225

Optimisation of a transverse flux linear PM generator using 3D Finite Element Analysis.  

E-Print Network (OSTI)

??ENGLISH ABSTRACT: Several transverse flux and longitudinal flux linear generator topologies exist for freepiston Stirling engine applications. In this thesis the transverse flux permanent magnet (more)

Schutte, Jacques

2011-01-01T23:59:59.000Z

226

Neutron/gamma coupled library generation and gamma transport calculation with KARMA 1.2  

SciTech Connect

KAERI has developed a lattice transport calculation code KARMA and its multi-group cross section library generation system. Recently, the multi-group cross section library generation system has included a gamma cross section generation capability and KARMA also has been improved to include a gamma transport calculation module. This paper addresses the multi-group gamma cross section generation capability for the KARMA 1.2 code and the preliminary test results of the KARMA 1.2 gamma transport calculations. The gamma transport calculation with KARMA 1.2 gives the gamma flux, gamma smeared power, and gamma energy deposition distributions. The results of the KARMA gamma calculations were compared with those of HELIOS and they showed that KARMA 1.2 gives reasonable gamma transport calculation results. (authors)

Hong, S. G. [Dept. of Nuclear Engineering, Kyung Hee Univ., 446-701 Deogyeong-daero, GiHeung-gu, Yongin, Gyeonggi-do (Korea, Republic of); Kim, K. S.; Cho, J. Y.; Lee, K. H. [Korea Atomic Energy Research Inst., 305-353 Duckjin-dong, Yuseong-gu, Daejon (Korea, Republic of)

2012-07-01T23:59:59.000Z

227

The High Flux Isotope Reactor at Oak Ridge National Laboratory  

NLE Websites -- All DOE Office Websites

The High Flux Isotope Reactor at ORNL The High Flux Isotope Reactor at ORNL Aerial of the High Flux Isotope Reactor Site The High Flux Isotope Reactor site is located on the south side of the ORNL campus and is about a three-minute drive from her sister neutron facility, the Spallation Neutron Source. Operating at 85 MW, HFIR is the highest flux reactor-based source of neutrons for research in the United States, and it provides one of the highest steady-state neutron fluxes of any research reactor in the world. The thermal and cold neutrons produced by HFIR are used to study physics, chemistry, materials science, engineering, and biology. The intense neutron flux, constant power density, and constant-length fuel cycles are used by more than 500 researchers each year for neutron scattering research into

228

CO2 CH4 flux Air temperature Soil temperature and Soil moisture, Barrow, Alaska 2013 ver. 1  

DOE Data Explorer (OSTI)

This dataset consists of field measurements of CO2 and CH4 flux, as well as soil properties made during 2013 in Areas A-D of Intensive Site 1 at the Next-Generation Ecosystem Experiments (NGEE) Arctic site near Barrow, Alaska. Included are i) measurements of CO2 and CH4 flux made from June to September (ii) Calculation of corresponding Gross Primary Productivity (GPP) and CH4 exchange (transparent minus opaque) between atmosphere and the ecosystem (ii) Measurements of Los Gatos Research (LGR) chamber air temperature made from June to September (ii) measurements of surface layer depth, type of surface layer, soil temperature and soil moisture from June to September.

Margaret Torn

229

Air-sea CO[sub 2] fluxes in the equatorial Pacific in January-March 1991  

SciTech Connect

The partial pressure of CO[sub 2] in surface seawater and in air were continuously measured during the cruise ALIZE II (January 1991-March 1991) in the equatorial Pacific from Panama to Noumea via Tahiti. It provides a large set of data for estimating the air-sea CO[sub 2] flux in the equatorial Pacific. An average flux is calculated between 2.5 N and 2.5S. This estimation ranges from 5 to 8.5 mmol m[sup [minus]2]d[sup [minus]1] according to the CO[sub 2] exchange coefficient used. 4 refs., 18 figs., 3 tabs.

Lefevre, N.; Dandonneau, Y. (Universite Pierre et Marie Curie, Paris (France))

1992-11-20T23:59:59.000Z

230

MFTF-B performance calculations  

SciTech Connect

In this report we document the operating scenario models and calculations as they exist and comment on those aspects of the models where performance is sensitive to the assumptions that are made. We also focus on areas where improvements need to be made in the mathematical descriptions of phenomena, work which is in progress. To illustrate the process of calculating performance, and to be very specific in our documentation, part 2 of this report contains the complete equations and sequence of calculations used to determine parameters for the MARS mode of operation in MFTF-B. Values for all variables for a particular set of input parameters are also given there. The point design so described is typical, but should be viewed as a snapshot in time of our ongoing estimations and predictions of performance.

Thomassen, K.I.; Jong, R.A.

1982-12-06T23:59:59.000Z

231

What is a flux tube? On the magnetic field topology of buoyant flux structures  

E-Print Network (OSTI)

study the topology of field lines threading buoyant magnetic flux struc- tures. The magnetic structures on the parameters, the system exhibits varying degrees of symmetry. By integrating along magnetic field lines of the evolution, and therefore the degree of symmetry, the resulting magnetic structures can have field lines

232

Transient critical heat flux and blowdown heat-transfer studies  

SciTech Connect

Objective of this study is to give a best-estimate prediction of transient critical heat flux (CHF) during reactor transients and hypothetical accidents. To accomplish this task, a predictional method has been developed. Basically it involves the thermal-hydraulic calculation of the heated core with boundary conditions supplied from experimental measurements. CHF predictions were based on the instantaneous ''local-conditions'' hypothesis, and eight correlations (consisting of round-tube, rod-bundle, and transient correlations) were tested against most recent blowdown heat-transfer test data obtained in major US facilities. The prediction results are summarized in a table in which both CISE and Biasi correlations are found to be capable of predicting the early CHF of approx. 1 s. The Griffith-Zuber correlation is credited for its prediction of the delay CHF that occurs in a more tranquil state with slowly decaying mass velocity. In many instances, the early CHF can be well correlated by the x = 1.0 criterion; this is certainly indicative of an annular-flow dryout-type crisis. The delay CHF occurred at near or above 80% void fraction, and the success of the modified Zuber pool-boiling correlation suggests that this CHF is caused by flooding and pool-boiling type hydrodynamic crisis.

Leung, J.C.

1980-05-01T23:59:59.000Z

233

Inverse natural convection problem of estimating wall heat flux using a moving sensor  

SciTech Connect

Inverse heat transfer problems have many applications in various branch of science and engineering. Here, the inverse problem of determining heat flux at the bottom wall of a two-dimensional cavity from temperature measurement in the domain is considered. The Boussinesq equation is used to model the natural convection induced by the wall heat flux. The inverse natural convection problem is posed as a minimization problem of the performance function, which is the sum of square residuals between calculated and observed temperature, by means of a conjugate gradient method. Instead of employing several fixed sensors, a single sensor is used which is moving at a given frequency over the bottom wall. The present method solves the inverse natural convection problem accurately without a priori information about the unknown function to be estimated.

Park, H.M.; Chung, O.Y.

1999-11-01T23:59:59.000Z

234

Polarimetric Properties of Flux-Ropes and Sheared Arcades in Coronal Prominence Cavities  

E-Print Network (OSTI)

The coronal magnetic field is the primary driver of solar dynamic events. Linear and circular polarization signals of certain infrared coronal emission lines contain information about the magnetic field, and to access this information, either a forward or an inversion method must be used. We study three coronal magnetic configurations that are applicable to polar-crown filament cavities by doing forward calculations to produce synthetic polarization data. We analyze these forward data to determine the distinguishing characteristics of each model. We conclude that it is possible to distinguish between cylindrical flux ropes, spheromak flux ropes, and sheared arcades using coronal polarization measurements. If one of these models is found to be consistent with observational measurements, it will mean positive identification of the magnetic morphology that surrounds certain quiescent filaments, which will lead to a greater understanding of how they form and why they erupt.

Rachmeler, L A; Dove, J B; DeVore, C R; Fan, Y

2013-01-01T23:59:59.000Z

235

AmeriFlux Measurement Network: Science Team Research  

SciTech Connect

Research involves analysis and field direction of AmeriFlux operations, and the PI provides scientific leadership of the AmeriFlux network. Activities include the coordination and quality assurance of measurements across AmeriFlux network sites, synthesis of results across the network, organizing and supporting the annual Science Team Meeting, and communicating AmeriFlux results to the scientific community and other users. Objectives of measurement research include (i) coordination of flux and biometric measurement protocols (ii) timely data delivery to the Carbon Dioxide Information and Analysis Center (CDIAC); and (iii) assurance of data quality of flux and ecosystem measurements contributed by AmeriFlux sites. Objectives of integration and synthesis activities include (i) integration of site data into network-wide synthesis products; and (ii) participation in the analysis, modeling and interpretation of network data products. Communications objectives include (i) organizing an annual meeting of AmeriFlux investigators for reporting annual flux measurements and exchanging scientific information on ecosystem carbon budgets; (ii) developing focused topics for analysis and publication; and (iii) developing data reporting protocols in support of AmeriFlux network goals.

Law, B E

2012-12-12T23:59:59.000Z

236

SEED BANKS FOR MAGNETIC FLUX COMPRESSION GENERATORS  

SciTech Connect

In recent years the Lawrence Livermore National Laboratory (LLNL) has been conducting experiments that require pulsed high currents to be delivered into inductive loads. The loads fall into two categories (1) pulsed high field magnets and (2) the input stage of Magnetic Flux Compression Generators (MFCG). Three capacitor banks of increasing energy storage and controls sophistication have been designed and constructed to drive these loads. One bank was developed for the magnet driving application (20kV {approx} 30kJ maximum stored energy.) Two banks where constructed as MFCG seed banks (12kV {approx} 43kJ and 26kV {approx} 450kJ). This paper will describe the design of each bank including switching, controls, circuit protection and safety.

Fulkerson, E S

2008-05-14T23:59:59.000Z

237

Time dependences of atmospheric Carbon dioxide fluxes  

E-Print Network (OSTI)

Understanding the lifetime of CO2 in the atmosphere is critical for predictions regarding future climate changes. A simple mass conservation analysis presented here generates tight estimations for the atmosphere's retention time constant. The analysis uses a leaky integrator model that combines the observed deficit (only less than 40% of CO2 produced from combustion of fossil fuels is actually retained in the atmosphere, while more than 60% is continuously shed) with the exponential growth of fossil fuel burning. It reveals a maximum characteristic time of less than 23 year for the transfer of atmospheric CO2 to a segregation sink. This time constant is further constrained by the rapid disappearance of 14C after the ban of atmospheric atomic bomb tests, which provides a lower limit of 18 years for this transfer. The study also generates evaluations of other CO2 fluxes, exchange time constants and volumes exchanged. Analysis of large harmonic oscillations of atmospheric CO2 concentration, often neglected in th...

DeSalvo, Riccardo

2014-01-01T23:59:59.000Z

238

Anomalous diffusion modifies solar neutrino fluxes  

E-Print Network (OSTI)

Density and temperature conditions in the solar core suggest that the microscopic diffusion of electrons and ions could be nonstandard: diffusion and friction coefficients are energy dependent, collisions are not two-body processes and retain memory beyond the single scattering event. A direct consequence of nonstandard diffusion is that the equilibrium energy distribution of particles departs from the Maxwellian one (tails goes to zero more slowly or faster than exponentially) modifying the reaction rates. This effect is qualitatively different from temperature and/or composition modification: small changes in the number of particles in the distribution tails can strongly modify the rates without affecting bulk properties, such as the sound speed or hydrostatic equilibrium, which depend on the mean values from the distribution. This mechanism can considerably increase the range of predictions for the neutrino fluxes allowed by the current experimental values (cross sections and solar properties) and can be u...

Kaniadakis, G; Lissia, M; Quarati, P

1998-01-01T23:59:59.000Z

239

Plasma momentum meter for momentum flux measurements  

DOE Patents (OSTI)

An apparatus is described for measuring momentum flux from an intense plasma stream, comprising: refractory target means oriented normal to the flow of said plasma stream for bombardment by said plasma stream where said bombardment by said plasma stream applies a pressure to said target means, pendulum means for communicating a translational displacement of said target to a force transducer where said translational displacement of said target is transferred to said force transducer by an elongated member coupled to said target, where said member is suspended by a pendulum configuration means and where said force transducer is responsive to said translational displacement of said member, and force transducer means for outputting a signal representing pressure data corresponding to said displacement.

Zonca, F.; Cohen, S.A.; Bennett, T.; Timberlake, J.R.

1993-08-24T23:59:59.000Z

240

CRAD, Management- Oak Ridge National Laboratory High Flux Isotope Reactor |  

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

Management- Oak Ridge National Laboratory High Flux Isotope Management- Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Management- Oak Ridge National Laboratory High Flux Isotope Reactor February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Management in preparation for restart of the Oak Ridge National Laboratory High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Management- Oak Ridge National Laboratory High Flux Isotope Reactor More Documents & Publications CRAD, Nuclear Safety - Oak Ridge National Laboratory High Flux Isotope

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

CRAD, Engineering - Oak Ridge National Laboratory High Flux Isotope Reactor  

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

Engineering - Oak Ridge National Laboratory High Flux Isotope Engineering - Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Engineering - Oak Ridge National Laboratory High Flux Isotope Reactor February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Engineering Program in preparation for restart of the Oak Ridge National Laboratory High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Engineering - Oak Ridge National Laboratory High Flux Isotope Reactor More Documents & Publications CRAD, Engineering - Oak Ridge National Laboratory High Flux Isotope Reactor

242

CRAD, Nuclear Safety - Oak Ridge National Laboratory High Flux Isotope  

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

CRAD, Nuclear Safety - Oak Ridge National Laboratory High Flux CRAD, Nuclear Safety - Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Nuclear Safety - Oak Ridge National Laboratory High Flux Isotope Reactor February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Nuclear Safety Program in preparation for restart of the Oak Ridge National Laboratory High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Nuclear Safety - Oak Ridge National Laboratory High Flux Isotope Reactor More Documents & Publications CRAD, Engineering - Oak Ridge National Laboratory High Flux Isotope Reactor

243

Tracking heat flux sensors for concentrating solar applications  

DOE Patents (OSTI)

Innovative tracking heat flux sensors located at or near the solar collector's focus for centering the concentrated image on a receiver assembly. With flux sensors mounted near a receiver's aperture, the flux gradient near the focus of a dish or trough collector can be used to precisely position the focused solar flux on the receiver. The heat flux sensors comprise two closely-coupled thermocouple junctions with opposing electrical polarity that are separated by a thermal resistor. This arrangement creates an electrical signal proportional to heat flux intensity, and largely independent of temperature. The sensors are thermally grounded to allow a temperature difference to develop across the thermal resistor, and are cooled by a heat sink to maintain an acceptable operating temperature.

Andraka, Charles E; Diver, Jr., Richard B

2013-06-11T23:59:59.000Z

244

Gas Flux Sampling (Evans, Et Al., 2001) | Open Energy Information  

Open Energy Info (EERE)

Gas Flux Sampling (Evans, Et Al., 2001) Gas Flux Sampling (Evans, Et Al., 2001) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Flux Sampling (Evans, Et Al., 2001) Exploration Activity Details Location Unspecified Exploration Technique Gas Flux Sampling Activity Date Usefulness useful DOE-funding Unknown Notes Laboratory experiments aimed at evaluating gas flux sampling methods The value of using the noble gas suite in transport studies is made obvious by the eight-fold enrichment in 4Her132Xe observed in the 80% CO sample (Table 2 1), relative to abundancies in air. Our results at least show that gas samples collected by either sudden pre-evacuated container or gradual gas pump. Removal of tens of cm3 of gas through an access pipe appear to reflect steady-state values. On-site measurements other than CO2 flux could

245

Particle Export and Resuspension Fluxes in The Western North Atlantic  

Science Journals Connector (OSTI)

Sediment traps were deployed at several locations throughout the Western North Atlantic to measure export and resuspension fluxes. Unpublished nephelometer profiles were examined prior ... bottom boundary layer. ...

Wilford D. Gardner; Mary Jo Richardson

1992-01-01T23:59:59.000Z

246

Posters Monte Carlo Simulation of Longwave Fluxes Through Broken...  

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

5 Posters Monte Carlo Simulation of Longwave Fluxes Through Broken Scattering Cloud Fields E. E. Takara and R. G. Ellingson University of Maryland College Park, Maryland To...

247

Integration of Novel Flux Coupling Motor and Current Source Inverter...  

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

Current Source Inverters for HEVs and FCVs Vehicle Technologies Office Merit Review 2014: Wireless Charging Integration of Novel Flux Coupling Motor and Current Source Inverter...

248

High Heat Flux Thermoelectric Module Using Standard Bulk Material  

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

Presents high heat flux thermoelectric module design for cooling using a novel V-shaped shunt configuration with bulk TE elements achieving high area packing fractions

249

Gas Flux Sampling At Dixie Valley Geothermal Area (Iovenitti...  

Open Energy Info (EERE)

of the geothermal area. Ultimately for potential development of EGS. Notes A CO2 soil gas flux survey was conducted in areas recognized as geothermal upflow zones...

250

Boundary mixing and nutrient fluxes in Mono Lake, California  

Science Journals Connector (OSTI)

we inferred that most heat flux occurred due to boundary mixing at the base of the pycnocline ..... squares fit of the power spectral densities of the temperature-.

1999-05-20T23:59:59.000Z

251

Gas Flux Sampling At Desert Peak Area (Lechler And Coolbaugh...  

Open Energy Info (EERE)

2007) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Flux Sampling At Desert Peak Area (Lechler And Coolbaugh, 2007) Exploration Activity...

252

Gas Flux Sampling At Kilauea East Rift Geothermal Area (Thomas...  

Open Energy Info (EERE)

1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Flux Sampling At Kilauea East Rift Geothermal Area (Thomas, 1986) Exploration Activity...

253

Shedding light on processes that control particle export and flux ...  

Science Journals Connector (OSTI)

selected upper-ocean studies of particulate organic carbon (POC) flux and relate these ... The ecosystem model first predicts ...... First, we note that as a power.

2009-04-24T23:59:59.000Z

254

Calculation Theory of Uniform Distribution in Cleanroom  

Science Journals Connector (OSTI)

Calculation of the dust concentration is the core of the design calculation for cleanroom. The theoretical calculation in this chapter is ... the assumption that particles are uniformly distributed in cleanroom.

Zhonglin Xu

2014-01-01T23:59:59.000Z

255

NONLINEAR APPROXIMATIONS FOR ELECTRONIC STRUCTURE CALCULATIONS  

E-Print Network (OSTI)

NONLINEAR APPROXIMATIONS FOR ELECTRONIC STRUCTURE CALCULATIONS G. BEYLKIN AND T. S. HAUT Abstract. We present a new method for electronic structure calculations based on novel algorithms for nonlinear numerical calculus suitable for electronic structure calculations. For any spatial orbital

Beylkin, Gregory

256

Multilevel domain decomposition for electronic structure calculations  

E-Print Network (OSTI)

Multilevel domain decomposition for electronic structure calculations M. Barrault a,b,*, E. Cance method (MDD) for electronic structure calculations within semi- empirical and density functional theory electronic structure calculations A molecular system is composed of N electrons, modelled quantum

Hager, William

257

Electronic Structure Calculations on Helical Conducting Polymers  

Science Journals Connector (OSTI)

Electronic Structure Calculations on Helical Conducting Polymers ... Therefore, we select the B3LYP/6-31G* methodology to calculate the oligomers. ... Table 3 shows several calculated parameters. ...

Juan D. Ripoll; Andrei Serna; Doris Guerra; Albeiro Restrepo

2010-09-28T23:59:59.000Z

258

Benchmark calculations for a heavy water research reactor using the WIMS-D4M code and a ENDF/B-V based library  

SciTech Connect

The results of unit-cell and global diffusion and transport calculations performed for the Georgia Tech heavy water research reactor using the WIMS-D4m code and a new ENDF/B-V based library are presented in this paper. Key cross sections, eigenvalues, neutron fluxes and peak power densities obtained from global diffusion calculations are compared.

Mo, S.C.

1993-12-31T23:59:59.000Z

259

Cost Recovery Charge (CRC) Calculation Tables  

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

Cost Recovery Charge (CRC) Calculation Table Updated: October 6, 2014 FY 2016 September 2014 CRC Calculation Table (pdf) Final FY 2015 CRC Letter & Table (pdf) Note: The Cost...

260

Anomalous diffusion modifies solar neutrino fluxes  

E-Print Network (OSTI)

Density and temperature conditions in the solar core suggest that the microscopic diffusion of electrons and ions could be nonstandard: Diffusion and friction coefficients are energy dependent, collisions are not two-body processes and retain memory beyond the single scattering event. A direct consequence of nonstandard diffusion is that the equilibrium energy distribution of particles departs from the Maxwellian one (tails goes to zero more slowly or faster than exponentially) modifying the reaction rates. This effect is qualitatively different from temperature and/or composition modification: Small changes in the number of particles in the distribution tails can strongly modify the rates without affecting bulk properties, such as the sound speed or hydrostatic equilibrium, which depend on the mean values from the distribution. This mechanism can considerably increase the range of predictions for the neutrino fluxes allowed by the current experimental values (cross sections and solar properties) and can be used to reduce the discrepancy between these predictions and the solar neutrino experiments.

G. Kaniadakis; A. Lavagno; M. Lissia; P. Quarati

1997-10-16T23:59:59.000Z

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

Measurements and Calculations on Heliostat Field  

Science Journals Connector (OSTI)

The HERMES (Heliostat and Receiver Measuring System) has proved to ... for measurements of high solar fluxes from complete heliostat fields. The relevant measured data were heliostat field efficiency, beam qualit...

W. Schiel; G. Lemperle

1986-01-01T23:59:59.000Z

262

Equations shorten pipe collapse calculations  

SciTech Connect

The API suggests collapse pressure equations for long, perfectly round, steel oil field casing, tubing, drill pipe, and line pipe. Operating and service company engineers can substitute two pipe collapse pressure equations for the 12 API equations now in general use. The shorthand results are almost the same as those from the API equations. The shorthand method has the additional advantage of allowing units from any measurement system. The API equations restrict calculations to US units only. The equation box lists the API (Equations 1--12) and the shorthand (Equations 13--14) equations. The API equations are based on work started shortly after the turn of the century.

Avakov, V.A. [Halliburton Energy Services, Duncan, OK (United States)

1995-04-10T23:59:59.000Z

263

Comparison of plasma focus calculations  

Science Journals Connector (OSTI)

A simple model for the current history of plasma focus experiments is presented. The presence of a leak current which does not pass through the plasma sheath is allowed. Results are found to compare quite well with those of much more sophisticated two?dimensional magnetohydrodynamic calculations. For the Frascati experiment which has detailed current measurements computed results do not agree with experimentally derived values. A reasonable match for the total current in the Frascati experiment can be found by lowering the leak current. Both total and leak current can be matched if a mass loss from the run?down region is allowed.

Peter G. Eltgroth

1982-01-01T23:59:59.000Z

264

Magnetic flux dynamics in a hexagonal network of superconducting islands  

E-Print Network (OSTI)

critical states, of inter- and intra-granular screening currents. The rate of flux penetration-based tapes. The magneto-optical observation showed a flux penetration/reversal process consisting of two Bean penetration into the grains. The grain magnetization was non- uniform and asymmetrical. Although grains stood

Johansen, Tom Henning

265

Magnetic flux emergence and associated dynamic phenomena in the Sun  

Science Journals Connector (OSTI)

...follow the same flux distribution: a power law with...resulting in a scale-free distribution. Moreover, Thornton...found that the flux distribution of newly emerged features...fields to the quiet-Sun photosphere and in...region with a steep temperature gradient and a stably...

2012-01-01T23:59:59.000Z

266

Wave momentum flux parameter: a descriptor for nearshore waves  

E-Print Network (OSTI)

Wave momentum flux parameter: a descriptor for nearshore waves Steven A. Hughes* US Army Engineer Available online 7 October 2004 Abstract A new parameter representing the maximum depth-integrated wave momentum flux occurring over a wave length is proposed for characterizing the wave contribution

US Army Corps of Engineers

267

Thermal neutron flux perturbation due to indium foils in water  

E-Print Network (OSTI)

press) 13. Axford, R. A. , and Day, G. M. , personnel communication. 14. Ritchie, R. H. , Thermal Neutron Flux De ression, Health Physics Division Annual Prog. Rep. July, 1958, ORNL-2806, p. 133. 27 i 5, Walker, J. V. , "The Measurement of Absolute... Fluxes in Water and Graphite, " 'ORNL- 2842, 204 (f959). ...

Stinson, Ronald Calvin

1961-01-01T23:59:59.000Z

268

Energy Calculator- Common Units and Conversions  

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

Energy Calculator - Common Units and Conversions Energy Calculator - Common Units and Conversions Calculators for Energy Used in the United States: Coal Electricity Natural Gas Crude Oil Gasoline Diesel & Heating Oil Coal Conversion Calculator Short Tons Btu Megajoules Metric Tons Clear Calculate 1 Short Ton = 20,169,000 Btu (based on U.S. consumption, 2007) Electricity Conversion Calculator KilowattHours Btu Megajoules million Calories Clear Calculate 1 KilowattHour = 3,412 Btu Natural Gas Conversion Calculator Cubic Feet Btu Megajoules Cubic Meters Clear Calculate 1 Cubic Foot = 1,028 Btu (based on U.S. consumption, 2007); 1 therm = 100,000 Btu; 1 terajoule = 1,000,000 megajoules Crude Oil Conversion Calculator Barrels Btu Megajoules Metric Tons* Clear Calculate 1 Barrel = 42 U.S. gallons = 5,800,000 Btu (based on U.S. consumption,

269

Observed Southern Ocean Cloud Properties and Shortwave Reflection. Part I: Calculation of SW Flux from Observed Cloud Properties  

Science Journals Connector (OSTI)

The sensitivity of the reflection of shortwave radiation over the Southern Ocean to the cloud properties there is estimated using observations from a suite of passive and active satellite instruments in combination with radiative transfer ...

Daniel T. McCoy; Dennis L. Hartmann; Daniel P. Grosvenor

270

Forest understory soil temperatures and heat flux calculated using a Fourier model and scaled using a digital camera  

E-Print Network (OSTI)

with an infrared thermometer along an 11 m transect, a sun?Multiscale sensing Infrared thermometer Remote sensing Imagefacing infrared thermometer (Model 4000.3ZL, Ever- est

Graham, Eric; Lam, Yeung; Yuen, Eric

2010-01-01T23:59:59.000Z

271

Design Calculations For NIF Convergent Ablator Experiments  

SciTech Connect

The NIF convergent ablation tuning effort is underway. In the early experiments, we have discovered that the design code simulations over-predict the capsule implosion velocity and shock flash rhor, but under-predict the hohlraum x-ray flux measurements. The apparent inconsistency between the x-ray flux and radiography data implies that there are important unexplained aspects of the hohlraum and/or capsule behavior.

Olson, R E; Hicks, D G; Meezan, N B; Callahan, D A; Landen, O L; Jones, O S; Langer, S H; Kline, J L; Wilson, D C; Rinderknecht, H; Zylstra, A; Petrasso, R D

2011-10-25T23:59:59.000Z

272

Critical heat flux predictions based on the BODYFIT-2PE computer code and Columbia University CHF correlation. [PWR; BWR  

SciTech Connect

The BODYFIT-2PE (Boundary-Fitted Coordinate, 2-Phase Flow with Partially Elliptic) computer code has been developed and was employed to simulate the critical heat flux experiment in a General Electric 3 x 3 rod bundle by using a CHF correlation recently developed at Columbia University under EPRI sponsorship. CHF predictions are important in analyzing rod bundle performance in nuclear reactor operation. The results of the BODYFIT calculations compared favorably with the experimental measurements.

Chen, B.C.J.; Chien, T.H.; Sha, W.T.; Kim, J.H.

1983-01-01T23:59:59.000Z

273

One-point fitting of the flux density produced by a heliostat  

SciTech Connect

Accurate and simple models for the flux density reflected by an isolated heliostat should be one of the basic tools for the design and optimization of solar power tower systems. In this work, the ability and the accuracy of the Universidad de Zaragoza (UNIZAR) and the DLR (HFCAL) flux density models to fit actual energetic spots are checked against heliostat energetic images measured at Plataforma Solar de Almeria (PSA). Both the fully analytic models are able to acceptably fit the spot with only one-point fitting, i.e., the measured maximum flux. As a practical validation of this one-point fitting, the intercept percentage of the measured images, i.e., the percentage of the energetic spot sent by the heliostat that gets the receiver surface, is compared with the intercept calculated through the UNIZAR and HFCAL models. As main conclusions, the UNIZAR and the HFCAL models could be quite appropriate tools for the design and optimization, provided the energetic images from the heliostats to be used in the collector field were previously analyzed. Also note that the HFCAL model is much simpler and slightly more accurate than the UNIZAR model. (author)

Collado, Francisco J. [Univ. Zaragoza, CPS-B, Dpto de Ingenieria Mecanica, Maria de Luna 3, 50018 Zaragoza (Spain)

2010-04-15T23:59:59.000Z

274

CRAD, Engineering - Oak Ridge National Laboratory High Flux Isotope Reactor  

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

Oak Ridge National Laboratory High Flux Isotope Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR CRAD, Engineering - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Engineering Program portion of an Operational Readiness Review of the Oak Ridge National Laboratory, High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Engineering - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR More Documents & Publications

275

CRAD, Emergency Management - Oak Ridge National Laboratory High Flux  

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

Oak Ridge National Laboratory High Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Emergency Management - Oak Ridge National Laboratory High Flux Isotope Reactor February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Emergency Management Program in preparation for restart of the Oak Ridge National Laboratory High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Emergency Management - Oak Ridge National Laboratory High Flux Isotope Reactor More Documents & Publications CRAD, Emergency Management - Oak Ridge National Laboratory High Flux

276

NACP Site-Model and Aggregated Flux Data Published  

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

Site-Model and Aggregated Flux Data Published Site-Model and Aggregated Flux Data Published The ORNL DAAC is pleased to announce the release of a data set from the North American Carbon Program (NACP): NACP Site: Terrestrial Biosphere Model and Aggregated Flux Data in Standard Format . Data set prepared by D.M. Ricciuto, K. Schaefer, P.E. Thornton, K. Davis, R.B. Cook, Shishi Liu, R. Anderson, M.A. Arain, I. Baker, J.M. Chen, M. Dietze, R. Grant, C. Izaurralde, A.K. Jain, A.W. King, C. Kucharik, Shuguang Liu, E. Lokupitiya, Y. Luo, C. Peng, B. Poulter, D. Price, W. Riley, A. Sahoo, H. Tian, C. Tonitto, and H. Verbeeck. This data set provides standardized output variables for gross primary productivity (GPP), net ecosystem exchange (NEE), leaf area index (LAI), ecosystem respiration (Re), latent heat flux (LE), and sensible heat flux (H) from 24

277

CRAD, Radiological Controls - Oak Ridge National Laboratory High Flux  

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

High High Flux Isotope Reactor CRAD, Radiological Controls - Oak Ridge National Laboratory High Flux Isotope Reactor February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Radiation Protection Program in preparation for restart of the Oak Ridge National Laboratory High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Radiological Controls - Oak Ridge National Laboratory High Flux Isotope Reactor More Documents & Publications CRAD, Engineering - Oak Ridge National Laboratory High Flux Isotope Reactor

278

CRAD, Management - Oak Ridge National Laboratory High Flux Isotope Reactor  

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

Oak Ridge National Laboratory High Flux Isotope Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR CRAD, Management - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Management portion of an Operational Readiness Review of the Oak Ridge National Laboratory High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Management - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR More Documents & Publications

279

CRAD, Training - Oak Ridge National Laboratory High Flux Isotope Reactor |  

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

Reactor Reactor CRAD, Training - Oak Ridge National Laboratory High Flux Isotope Reactor February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Training Program in preparation for restart of the Oak Ridge National Laboratory High Flux Isotope Reactor. RADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Training - Oak Ridge National Laboratory High Flux Isotope Reactor More Documents & Publications CRAD, Nuclear Safety - Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Training - Oak Ridge National Laboratory High Flux Isotope Reactor

280

CRAD, Maintenance - Oak Ridge National Laboratory High Flux Isotope Reactor  

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

Reactor Reactor CRAD, Maintenance - Oak Ridge National Laboratory High Flux Isotope Reactor February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Maintenance Program in preparation for restart of the Oak Ridge National Laboratory High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Maintenance - Oak Ridge National Laboratory High Flux Isotope Reactor More Documents & Publications CRAD, Safety Basis - Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Maintenance - Oak Ridge National Laboratory High Flux Isotope Reactor

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

CRAD, DOE Oversight - Oak Ridge National Laboratory High Flux Isotope  

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

Oak Ridge National Laboratory High Flux Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, DOE Oversight - Oak Ridge National Laboratory High Flux Isotope Reactor A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a DOE independent oversight assessment of the Oak Ridge National Laboratory programs for oversight of its contractors. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, DOE Oversight - Oak Ridge National Laboratory High Flux Isotope Reactor More Documents & Publications CRAD, Nuclear Safety - Oak Ridge National Laboratory High Flux Isotope Reactor

282

A Jordan GNS Construction for the Holonomy-Flux *-algebra  

E-Print Network (OSTI)

The holonomy-flux *-algebra was recently proposed as an algebra of basic kinematical observables for loop quantum gravity. We show the conventional GNS construction breaks down when the the holonomy-flux *-algebra is allowed to be a Jordan algebra of observables. To remedy this, we give a Jordan GNS construction for the holonomy-flux *-algebra that is based on trace. This is accomplished by assuming the holonomy-flux *-algebra is an algebra of observables that is also a Banach algebra, hence a JB algebra. We show the Jordan GNS construction produces a state that is invariant under all inner derivations of the holonomy-flux *-algebra. Implications for the corresponding Jordan-Schrodinger equation are also discussed.

Michael Rios

2005-05-09T23:59:59.000Z

283

Flux-linkage characteristics of switched reluctance motor  

SciTech Connect

An important requirement in modeling of switched reluctance motor (SRM) is the knowledge of its flux-linkage characteristics. Idealization of the flux-linkage characteristics will result in a model which cannot predict the performance of the machine with sufficient accuracy. It is necessary therefore to determine flux-linkage characteristics as closely as possible. In this paper, the method of finding the flux-linkage characteristics is explained. The same is demonstrated on a commercially available 4 KW, 8/6 pole OULTON SRM. The validity of the test result is checked by computing the static torque characteristics based on the measured flux-linkage characteristics and comparing it with the experimentally measured static torque characteristics. The sources of measurement error are discussed.

Ramanarayanan, V.; Venkatesha, L.; Panda, D. [Indian Inst. of Science, Bangalore (India). Dept. of Electrical Engineering

1995-12-31T23:59:59.000Z

284

Acoustic emission from magnetic flux tubes in the solar network  

E-Print Network (OSTI)

We present the results of three-dimensional numerical simulations to investigate the excitation of waves in the magnetic network of the Sun due to footpoint motions of a magnetic flux tube. We consider motions that typically mimic granular buffeting and vortex flows and implement them as driving motions at the base of the flux tube. The driving motions generates various MHD modes within the flux tube and acoustic waves in the ambient medium. The response of the upper atmosphere to the underlying photospheric motion and the role of the flux tube in channeling the waves is investigated. We compute the acoustic energy flux in the various wave modes across different boundary layers defined by the plasma and magnetic field parameters and examine the observational implications for chromospheric and coronal heating.

Vigeesh, G

2013-01-01T23:59:59.000Z

285

Radiation flux and spectral analysis of the multi-temperature Z dynamic hohlraum  

SciTech Connect

Experiments performed at the Sandia National Laboratories (SNL) Z-machine, located in Albuquerque, New Mexico produce hot ({approx}220 eV) plasmas. X-ray emission from the plasma is used to drive radiation flow experiments. Our standard plasma diagnostic suite consists of x-ray diodes (XRDs), silicon photodiodes, and nickel thin film bolometers. Small diagnostic holes allow us to view the hot plasma from the side, top axial anode side, and bottom axial cathode side. Computer software has been written to process the raw data to calculate data quality, fold in detector spectral response and experiment geometry for emitted flux, calculate a multidetector spectral unfold, and yield an equivalent time-dependent Planckian temperature profile. Spectral unfolds of our XRD data generally yield a Planckian-like spectrum. In our presentation we will compare our diagnostic techniques, analysis, and results to more accurately characterize spectral unfolds in order to establish better drive conditions for our experiments.

Lockard, T. E.; Idzorek, G. C.; Tierney, T. E. IV; Watt, R. G. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

2008-10-15T23:59:59.000Z

286

Calculation of density profiles in tandem mirrors fueled by pellets  

SciTech Connect

We have modified the LLNL radial transport code TMT to model reactor regime plasmas, fueled by pellets. The source profiles arising from pellet fueling are obtained from existing pellet ablation models. Because inward radial diffusion due to inverted profiles must compete with trapping of central cell ions in the transition region for tandem mirrors, pellets must penetrate fairly far into the plasma. In fact, based on our radial calculations, a pellet with a velocity of 10 km/sec cannot sustain the central flux tubes; a velocity more like 100 km/sec will be necessary. We also find that the central cell radial diffusion must exceed classical by about a factor of 100.

Campbell, R.B.; Gilmore, J.M.

1983-12-02T23:59:59.000Z

287

CALCULATING OPTICAL CONSTANTS OF GLAZING MATERIALS  

E-Print Network (OSTI)

Solar Energy CALCULATING OPTICAL CONSTANTS OF GLAZING MATERIALS Michael Rub August 1981 TWO-WEEK LOAN

Rubin, Michael

2013-01-01T23:59:59.000Z

288

A FLUX ROPE ERUPTION TRIGGERED BY JETS  

SciTech Connect

We present an observation of a filament eruption caused by recurrent chromospheric plasma injections (surges/jets) on 2006 July 6. The filament eruption was associated with an M2.5 two-ribbon flare and a coronal mass ejection (CME). There was a light bridge in the umbra of the main sunspot of NOAA 10898; one end of the filament was terminated at the region close to the light bridge, and recurrent surges were observed to be ejected from the light bridge. The surges occurred intermittently for about 8 hr before the filament eruption, and finally a clear jet was found at the light bridge to trigger the filament eruption. We analyzed the evolutions of the relative darkness of the filament and the loaded mass by the continuous surges quantitatively. It was found that as the occurrence of the surges, the relative darkness of the filament body continued growing for about 3-4 hr, reached its maximum, and kept stable for more than 2 hr until it erupted. If suppose 50% of the ejected mass by the surges could be trapped by the filament channel, then the total loaded mass into the filament channelwill be about 0.57x10{sup 16} g with a momentum of 0.57x10{sup 22} g cm s{sup -1} by 08:08 UT, which is a non-negligible effect on the stability of the filament. Based on the observations, we present a model showing the important role that recurrent chromospheric mass injection play in the evolution and eruption of a flux rope. Our study confirms that the surge activities can efficiently supply the necessary material for some filament formation. Furthermore, our study indicates that the continuous mass with momentum loaded by the surge activities to the filament channel could make the filament unstable and cause it to erupt.

Guo Juan; Zhang Hongqi; Deng Yuanyong; Lin Jiaben; Su Jiangtao [Key Laboratory of Solar Activity, National Astronomical Observatories, Beijing 100012 (China); Liu Yu, E-mail: guojuan@bao.ac.c [Yunnan Astronomical Observatory, National Astronomical Observatories, Kunming 650011 (China)

2010-03-10T23:59:59.000Z

289

Interruption Cost Estimate Calculator | Open Energy Information  

Open Energy Info (EERE)

Interruption Cost Estimate Calculator Interruption Cost Estimate Calculator Jump to: navigation, search Tool Summary Name: Interruption Cost Estimate (ICE) Calculator Agency/Company /Organization: Freeman, Sullivan & Co. Sector: Energy Focus Area: Grid Assessment and Integration, Energy Efficiency Resource Type: Online calculator, Software/modeling tools User Interface: Website Website: icecalculator.com/ Country: United States Cost: Free Northern America References: [1] Logo: Interruption Cost Estimate (ICE) Calculator This calculator is a tool designed for electric reliability planners at utilities, government organizations or other entities that are interested in estimating interruption costs and/or the benefits associated with reliability improvements. About The Interruption Cost Estimate (ICE) Calculator is an electric reliability

290

Alternative Fuels Data Center: Vehicle Cost Calculator  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Vehicle Cost Vehicle Cost Calculator to someone by E-mail Share Alternative Fuels Data Center: Vehicle Cost Calculator on Facebook Tweet about Alternative Fuels Data Center: Vehicle Cost Calculator on Twitter Bookmark Alternative Fuels Data Center: Vehicle Cost Calculator on Google Bookmark Alternative Fuels Data Center: Vehicle Cost Calculator on Delicious Rank Alternative Fuels Data Center: Vehicle Cost Calculator on Digg Find More places to share Alternative Fuels Data Center: Vehicle Cost Calculator on AddThis.com... Vehicle Cost Calculator Vehicle Cost Calculator This tool uses basic information about your driving habits to calculate total cost of ownership and emissions for makes and models of most vehicles, including alternative fuel and advanced technology vehicles. Also

291

Energy Input Output Calculator | Open Energy Information  

Open Energy Info (EERE)

Input Output Calculator Input Output Calculator Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Energy Input-Output Calculator Agency/Company /Organization: Department of Energy Sector: Energy Focus Area: Energy Efficiency Resource Type: Online calculator User Interface: Website Website: www2.eere.energy.gov/analysis/iocalc/Default.aspx Web Application Link: www2.eere.energy.gov/analysis/iocalc/Default.aspx OpenEI Keyword(s): Energy Efficiency and Renewable Energy (EERE) Tools Language: English References: EERE Energy Input-Output Calculator[1] The Energy Input-Output Calculator (IO Calculator) allows users to estimate the economic development impacts from investments in alternate electricity generating technologies. About the Calculator The Energy Input-Output Calculator (IO Calculator) allows users to estimate

292

Approach for Calculating OE Benefits  

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

Reliability Reliability U.S. Department of Energy - 1000 Independence Ave., SW Washington, DC 20585 2007 Electricity Delivery and Energy Reliability Joe Paladino October 29, 2007 Approach for Calculating OE Benefits Challenges * Established benefits methodologies (e.g., NEMS and MARKAL) do not address some of the major benefits that OE's program will provide (e.g. reliability). * Much of OE's program is about transforming the way the T&D infrastructure operates rather than replacing components: - Some technologies need a high penetration or must be deployed as an entire system to yield benefits (e.g. PMUs or Distribution Automation). - Some programs within OE are not developing "widgets" that can be easily counted. - OE is developing tools/methodologies or funding demonstrations that

293

Power Line Calculator for DOS  

SciTech Connect

The Power Line Calculator (PLC) for DOS, version 1.0, is a program that describes the electrical characteristics of a transmission or distribution system given user-defined input. This input may consist of a combination of operating currents and phases, symmetric components, power factor, and real or reactive power. The program also allows the user to designate whether currents are present on the system neutral or in the ground. The PLC assumes that any value entered by the user remains fixed (e.g., phase current, power factor), and for underdetermined systems, basic default assumptions are incorporated: the power factor is held at or near 1.0, the net phase current is kept at or near zero, and the phase conductor currents are kept balanced. The program operates under PC/MS-DOS version 3.3 or later, and the output is available in both tabular and graphic formats.

Silva, J.M. (Enertech Consultants, Campbell, CA (United States))

1992-11-01T23:59:59.000Z

294

Divertor Heat Flux Mitigation in the National Spherical Torus Experiment  

SciTech Connect

Steady-state handling of divertor heat flux is a critical issue for both ITER and spherical torus-based devices with compact high power density divertors. Significant reduction of heat flux to the divertor plate has been achieved simultaneously with favorable core and pedestal confinement and stability properties in a highly-shaped lower single null configuration in the National Spherical Torus Experiment (NSTX) [M. Ono et al., Nucl. Fusion 40, 557 2000] using high magnetic flux expansion at the divertor strike point and the radiative divertor technique. A partial detachment of the outer strike point was achieved with divertor deuterium injection leading to peak flux reduction from 4-6 MW m{sup -2} to 0.5-2 MW m{sup -2} in small-ELM 0.8-1.0 MA, 4-6 MW neutral beam injection-heated H-mode discharges. A self-consistent picture of outer strike point partial detachment was evident from divertor heat flux profiles and recombination, particle flux and neutral pressure measurements. Analytic scrape-off layer parallel transport models were used for interpretation of NSTX detachment experiments. The modeling showed that the observed peak heat flux reduction and detachment are possible with high radiated power and momentum loss fractions, achievable with divertor gas injection, and nearly impossible to achieve with main electron density, divertor neutral density or recombination increases alone.

Soukhanovskii, V A; Maingi, R; Gates, D A; Menard, J E; Paul, S F; Raman, R; Roquemore, A L; Bell, M G; Bell, R E; Boedo, J A; Bush, C E; Kaita, R; Kugel, H W; LeBlanc, B P; Mueller, D

2008-08-04T23:59:59.000Z

295

RELAP5 model of the high flux isotope reactor with low enriched fuel thermal flux profiles  

SciTech Connect

The High Flux Isotope Reactor (HFIR) currently uses highly enriched uranium (HEU) fabricated into involute-shaped fuel plates. It is desired that HFIR be able to use low enriched uranium (LEU) fuel while preserving the current performance capability for its diverse missions in material irradiation studies, isotope production, and the use of neutron beam lines for basic research. Preliminary neutronics and depletion simulations of HFIR with LEU fuel have arrived to feasible fuel loadings that maintain the neutronics performance of the reactor. This article illustrates preliminary models developed for the analysis of the thermal-hydraulic characteristics of the LEU core to ensure safe operation of the reactor. The beginning of life (BOL) LEU thermal flux profile has been modeled in RELAP5 to facilitate steady state simulation of the core cooling, and of anticipated and unanticipated transients. Steady state results are presented to validate the new thermal power profile inputs. A power ramp, slow depressurization at the outlet, and flow coast down transients are also evaluated. (authors)

Banfield, J.; Mervin, B.; Hart, S.; Ritchie, J.; Walker, S.; Ruggles, A.; Maldonado, G. I. [Dept. of Nuclear Engineering, Univ. of Tennessee Knoxville, Knoxville, TN 37996-2300 (United States)

2012-07-01T23:59:59.000Z

296

Materials Compatibility and Aging for Flux and Cleaner Combinations.  

SciTech Connect

A materials study of high reliability electronics cleaning is presented here. In Phase 1, mixed type substrates underwent a condensed contaminants application to view a worst- case scenario for unremoved flux with cleaning agent residue for parts in a silicone oil filled environment. In Phase 2, fluxes applied to copper coupons and to printed wiring boards underwent gentle cleaning then accelerated aging in air at 65% humidity and 30 O C. Both sets were aged for 4 weeks. Contaminants were no-clean (ORL0), water soluble (ORH1 liquid and ORH0 paste), and rosin (RMA; ROL0) fluxes. Defluxing agents were water, solvents, and engineered aqueous defluxers. In the first phase, coupons had flux applied and heated, then were placed in vials of oil with a small amount of cleaning agent and additional coupons. In the second phase, pairs of copper coupons and PWB were hand soldered by application of each flux, using tin-lead solder in a strip across the coupon or a set of test components on the PWB. One of each pair was cleaned in each cleaning agent, the first with a typical clean, and the second with a brief clean. Ionic contamination residue was measured before accelerated aging. After aging, substrates were removed and a visual record of coupon damage made, from which a subjective rank was applied for comparison between the various flux and defluxer combinations; more corrosion equated to higher rank. The ORH1 water soluble flux resulted in the highest ranking in both phases, the RMA flux the least. For the first phase, in which flux and defluxer remained on coupons, the aqueous defluxers led to worse corrosion. The vapor phase cleaning agents resulted in the highest ranking in the second phase, in which there was no physical cleaning. Further study of cleaning and rinsing parameters will be required.

Archuleta, Kim; Piatt, Rochelle

2015-01-01T23:59:59.000Z

297

High Flux Beam Reactor | Environmental Restoration Projects | BNL  

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

Environmental Protection Division Environmental Protection Division Home Reactor Projects Celebrating DOE's Cleanup Accomplishments (PDF) Brookhaven Graphite Research Reactor(BGRR) BGRR Overview BGRR Complex Description Decommissioning Decision BGRR Complex Cleanup Actions BGRR Documents BGRR Science & Accomplishments High Flux Beam Reactor (HFBR) HFBR Overview HFBR Complex Description Decommissioning Decision HFBR Complex Cleanup Actions HFBR Documents HFBR Science & Accomplishments Groundwater Protection Group Environmental Protection Division Contact > See also: HFBR Science & Accomplishments High Flux Beam Reactor Under the U.S. Department of Energy (DOE), the High Flux Beam Reactor (HFBR) at Brookhaven National Laboratory (BNL) underwent stabilization and partial decommissioning to prepare the HFBR confinement for long-term safe

298

Direct control of air gap flux in permanent magnet machines  

DOE Patents (OSTI)

A method and apparatus for field weakening in PM machines uses field weakening coils (35, 44, 45, 71, 72) to produce flux in one or more stators (34, 49, 63, 64), including a flux which counters flux normally produced in air gaps between the stator(s) (34, 49, 63, 64) and the rotor (20, 21, 41, 61) which carries the PM poles. Several modes of operation are introduced depending on the magnitude and polarity of current in the field weakening coils (35, 44, 45, 71, 72). The invention is particularly useful for, but not limited to, the electric vehicle drives and PM generators.

Hsu, John S. (Oak Ridge, TN)

2000-01-01T23:59:59.000Z

299

Energy flux fluctuations in a finite volume of turbulent flow  

E-Print Network (OSTI)

The flux of turbulent kinetic energy from large to small spatial scales is measured in a small domain B of varying size R. The probability distribution function of the flux is obtained using a time-local version of Kolmogorov's four-fifths law. The measurements, made at a moderate Reynolds number, show frequent events where the flux is backscattered from small to large scales, their frequency increasing as R is decreased. The observations are corroborated by a numerical simulation based on the motion of many particles and on an explicit form of the eddy damping.

Mahesh Bandi; Walter Goldburg; John Cressman Jr.; Alain Pumir

2006-07-19T23:59:59.000Z

300

The Next Generation of Canadian Solar Flux Monitoring  

Science Journals Connector (OSTI)

The 10.7 cm solar radio flux (F10.7), provided by the National Research Council of Canada since 1947, is widely used as an index of solar activity and as a proxy for other solar quantities that are harder to measure. Over recent years needs have arisen that are difficult to meet with solar flux measurements at a single wavelength. F10.7 comprises contributions from multiple emission mechanisms. To separate these, multi-wavelength measurements are needed. A new instrument is under construction that will measure fluxes precisely in six bands at 2.8, 3.6, 6.0, 10.7, 18 and 21 cm.

Kenneth F Tapping; Donald C Morton

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

RTU Comparison Calculator Enhancement Plan  

SciTech Connect

Over the past two years, Department of Energys Building Technologies Office (BTO) has been investigating ways to increase the operating efficiency of the packaged rooftop units (RTUs) in the field. First, by issuing a challenge to the RTU manufactures to increase the integrated energy efficiency ratio (IEER) by 60% over the existing ASHRAE 90.1-2010 standard. Second, by evaluating the performance of an advanced RTU controller that reduces the energy consumption by over 40%. BTO has previously also funded development of a RTU comparison calculator (RTUCC). RTUCC is a web-based tool that provides the user a way to compare energy and cost savings for two units with different efficiencies. However, the RTUCC currently cannot compare savings associated with either the RTU Challenge unit or the advanced RTU controls retrofit. Therefore, BTO has asked PNNL to enhance the tool so building owners can compare energy and savings associated with this new class of products. This document provides the details of the enhancements that are required to support estimating energy savings from use of RTU challenge units or advanced controls on existing RTUs.

Miller, James D.; Wang, Weimin; Katipamula, Srinivas

2014-03-31T23:59:59.000Z

302

A dual mass flux framework for boundary layer convection  

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

A dual mass flux framework for boundary layer convection A dual mass flux framework for boundary layer convection Neggers, Roel European Centre for Medium-range Weather Forecasts (ECMWF) Category: Modeling A new convective boundary layer scheme is presented that is currently being developed for the Integrated Forecasting System (IFS) of the European Centre for Medium-range Weather Forecasts (ECMWF). Part of the total turbulent flux is modeled through advective mass flux by multiple updrafts, initialized at the surface. Two groups of updrafts are explicitly represented; i) updrafts that never reach their lifting condensation level, and ii) updrafts that condensate and become cloudy. Key new ingredient is the flexibility of the associated updraft area fractions, as a function of model state. As a result, an extra degree of freedom is introduced in the

303

CRAD, Environmental Protection - Oak Ridge National Laboratory High Flux  

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

Environmental Protection - Oak Ridge National Laboratory High Environmental Protection - Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Environmental Protection - Oak Ridge National Laboratory High Flux Isotope Reactor February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Environmental Compliance Program in preparation for restart of the Oak Ridge National Laboratory High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Environmental Protection - Oak Ridge National Laboratory High Flux Isotope Reactor More Documents & Publications

304

CRAD, Configuration Management - Oak Ridge National Laboratory High Flux  

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

Oak Ridge National Laboratory High Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR CRAD, Configuration Management - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR February 2007, A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Configuration Managment Program portion of an Operational Readiness Review of the Oak Ridge National Laboratory, High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Configuration Management - Oak Ridge National Laboratory High Flux

305

CRAD, Fire Protection - Oak Ridge National Laboratory High Flux Isotope  

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

Fire Protection - Oak Ridge National Laboratory High Flux Fire Protection - Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Fire Protection - Oak Ridge National Laboratory High Flux Isotope Reactor February 2006 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2006 Commencement of Operations assessment of the Fire Protection program at the Idaho National Laboratory, Idaho Accelerated Retrieval Project Phase II. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Fire Protection - Oak Ridge National Laboratory High Flux Isotope Reactor More Documents & Publications

306

Technical Sessions Measurements of Surface Heat Flux Over Contrasting Surfaces  

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

Measurements of Surface Heat Flux Measurements of Surface Heat Flux Over Contrasting Surfaces R. L. Coulter J. D. Shannon T. J. Martin Argonne National Laboratory Argonne, IL 60439 In a multilaboratory field study held near Boardman in northeastern Oregon in June 1991 and described in greater detail elsewhere (Doran et al. 1991), various properties of the surface and lower atmospheric boundary layer over heavily irrigated cropland and adjacent desert steppe were investigated. The locale was selected because its disparate characteristics over various spatial scales stress the ability of general circulation models (GCMs) to describe lower boundary conditions, particularly across the discontinuity between desert (in which turbulent flux of heat must be primarily as sensible heat) and large irrigated tracts (in which turbulent flux of latent heat should be the larger term).

307

CRAD, Safety Basis - Oak Ridge National Laboratory High Flux Isotope  

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

Reactor Contractor ORR Reactor Contractor ORR CRAD, Safety Basis - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Safety Basis portion of an Operational Readiness Review of the Oak Ridge National Laboratory High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Safety Basis - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR More Documents & Publications CRAD, Engineering - Oak Ridge National Laboratory High Flux Isotope Reactor

308

CRAD, Maintenance - Oak Ridge National Laboratory High Flux Isotope Reactor  

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

Reactor Contractor ORR Reactor Contractor ORR CRAD, Maintenance - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Maintenance Program portion of an Operational Readiness Review of the Oak Ridge National Laboratory High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Maintenance - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR More Documents & Publications CRAD, Engineering - Oak Ridge National Laboratory High Flux Isotope Reactor

309

CRAD, Training - Oak Ridge National Laboratory High Flux Isotope Reactor  

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

Reactor Contractor ORR Reactor Contractor ORR CRAD, Training - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Training Program portion of an Operational Readiness Review of the Oak Ridge National Laboratory High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Training - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR More Documents & Publications CRAD, Conduct of Operations - Oak Ridge National Laboratory High Flux

310

CRAD, Configuration Management - Oak Ridge National Laboratory High Flux  

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

Configuration Management - Oak Ridge National Laboratory High Configuration Management - Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Configuration Management - Oak Ridge National Laboratory High Flux Isotope Reactor February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Configuration Management Program in preparation for restart of the Oak Ridge National Laboratory, High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Configuration Management - Oak Ridge National Laboratory High Flux Isotope Reactor More Documents & Publications

311

CRAD, Conduct of Operations - Oak Ridge National Laboratory High Flux  

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

Reactor Reactor CRAD, Conduct of Operations - Oak Ridge National Laboratory High Flux Isotope Reactor February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February, 2007 assessment of the Conduct of Operations Program in preparation for restart of the Oak Ridge National Laboratory, High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Conduct of Operations - Oak Ridge National Laboratory High Flux Isotope Reactor More Documents & Publications CRAD, Fire Protection - Oak Ridge National Laboratory High Flux Isotope

312

Energy Flux to a Cyclonic Eddy off Cabo Frio, Brazil  

Science Journals Connector (OSTI)

To evaluate the energy flux from the mean flow of South Atlantic western boundary currents toward typical Cabo Frio eddies (at Brazilian southeast coast), the southwestern Atlantic circulation was simulated with the Princeton Ocean Model. ...

Manlio F. Mano; Afonso M. Paiva; Audalio R. Torres Jr.; Alvaro L. G. A. Coutinho

2009-11-01T23:59:59.000Z

313

Temperature variations in the flux of high-energy muons  

Science Journals Connector (OSTI)

The flux of high-energy muons (threshold energy, 220 GeV) as a function of ... the correlation coefficient between the counting rate of muons and the temperature of the atmosphere at...

M. G. Kostyuk; V. B. Petkov

2011-06-01T23:59:59.000Z

314

Fast Flux Test Facility project plan. Revision 2  

SciTech Connect

The Fast Flux Test Facility (FFTF) Transition Project Plan, Revision 2, provides changes to the major elements and project baseline for the deactivation activities necessary to transition the FFTF to a radiologically and industrially safe shutdown condition.

Hulvey, R.K.

1995-11-01T23:59:59.000Z

315

Predicting solar radiation fluxes for solar energy system applications  

Science Journals Connector (OSTI)

The mean daily global solar radiation flux is influenced by astronomical, climatological, geographical, geometrical, meteorological, and physical parameters. This paper deals with the study of the effects of i...

M. H. Saffaripour; M. A. Mehrabian

2013-07-01T23:59:59.000Z

316

The Effects of Magnetizer Velocity on Magnetic Flux Leakage Signals  

Science Journals Connector (OSTI)

In many magnetic flux leakage applications, the nondestructive inspection constraints suggest the use of high inspection velocities. However, high inspection velocities can compromise the ability to detect and ch...

J. Bruce Nestleroth; Richard J. Davis

1993-01-01T23:59:59.000Z

317

Posters Mean Fluxes of Visible Solar Radiation in Broken Clouds  

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

7 Posters Mean Fluxes of Visible Solar Radiation in Broken Clouds V. E. Zuev, G. A. Titov, T. B. Zhuravleva, and S. Y. Popov Institute of Atmospheric Optics, Siberian Branch...

318

Gamma-Ray Burst Measurements at Low Fluxes  

Science Journals Connector (OSTI)

30 June 1981 research-article Gamma-Ray Burst Measurements at Low Fluxes K. Beurle A. Bewick J. S. Mills J. J. Quenby The Royal Society is collaborating with JSTOR to...

1981-01-01T23:59:59.000Z

319

OBSERVATION OF FLUX-TUBE CROSSINGS IN THE SOLAR WIND  

SciTech Connect

Current sheets are ubiquitous in the solar wind. They are a major source of the solar wind MHD turbulence intermittency. They may result from nonlinear interactions of the solar wind MHD turbulence or are the boundaries of flux tubes that originate from the solar surface. Some current sheets appear in pairs and are the boundaries of transient structures such as magnetic holes and reconnection exhausts or the edges of pulsed Alfven waves. For an individual current sheet, discerning whether it is a flux-tube boundary or due to nonlinear interactions or the boundary of a transient structure is difficult. In this work, using data from the Wind spacecraft, we identify two three-current-sheet events. Detailed examination of these two events suggests that they are best explained by the flux-tube-crossing scenario. Our study provides convincing evidence supporting the scenario that the solar wind consists of flux tubes where distinct plasmas reside.

Arnold, L.; Li, G.; Li, X. [Department of Physics and CSPAR, University of Alabama in Huntsville, Huntsville, AL 35899 (United States)] [Department of Physics and CSPAR, University of Alabama in Huntsville, Huntsville, AL 35899 (United States); Yan, Y., E-mail: gang.li@uah.edu [Key Laboratory of Solar Activity, National Astronomical Observatories of Chinese Academy of Sciences, Beijing 100012 (China)

2013-03-20T23:59:59.000Z

320

Contribution of prompt muon production to total muon fluxes  

Science Journals Connector (OSTI)

The flux of prompt cosmic-ray muons coming from charmed particles which are produced ... compare the observed results on angular distributions of muon intensities at a given depth with the ... . There is no clear...

H. Inazawa; K. Kobayakawa; T. Kitamura

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


321

Effect of tensile strain on grain connectivity and flux pinning...  

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

tensile strain on grain connectivity and flux pinning in Bi 2 Sr 2 Ca 2 Cu 3 O x tapes D. C. van der Laan and J. W. Ekin National Institute of Standards and Technology, Boulder,...

322

Entropy satisfying flux vector splittings and kinetic BGK models  

Science Journals Connector (OSTI)

We establish forward and backward relations between entropy satisfying BGK relaxation models such as those introduced previously by the author and the first order flux vector splitting numerical methods for general systems of conservation laws. Classically, ...

F. Bouchut

2003-06-01T23:59:59.000Z

323

The Momentum flux in two-phase flow  

E-Print Network (OSTI)

The average momentum flux at a section of a pipe with twophase upflow has been measured by the impulse technique. Steamwater and air-water mixtures were tested in one-inch and onehalf inch nominal pipes. Homogeneous ...

Andeen, Gerry B.

1965-01-01T23:59:59.000Z

324

An Energy-Constrained Parameterization of Eddy Buoyancy Flux  

Science Journals Connector (OSTI)

A parameterization for eddy buoyancy fluxes for use in coarse-grid models is developed and tested against eddy-resolving simulations. The development is based on the assumption that the eddies are adiabatic (except near the surface) and the ...

Paola Cessi

2008-08-01T23:59:59.000Z

325

CRAD, Emergency Management - Oak Ridge National Laboratory High Flux  

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

Oak Ridge National Laboratory High Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR CRAD, Emergency Management - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Emergency Management Program portion of an Operational Readiness Review of the Oak Ridge National Laboratory High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Emergency Management - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR

326

E-Print Network 3.0 - achieve high flux Sample Search Results  

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

(SAA) and in the polar regions. The flux of energetic protons is known to be highly anisotropic... the flux is highly anisotropic. Rough comparisons of the fluxes from some...

327

Horizontal internal-tide fluxes supportelevated phytoplankton productivity overthe inner continental shelf  

E-Print Network (OSTI)

The semidiurnal internal-tide energy flux was onshore over1 Cross-shelf internal-tide energy (J e ), heat (J q ),coherent with the internal-tide energy flux and heat flux (

Lucas, Andrew

2014-01-01T23:59:59.000Z

328

Global sea-to-air flux climatology for bromoform, dibromomethane and methyl iodide  

E-Print Network (OSTI)

Global sea-to-air flux climatology Ko, M. K. W. , Poulet,Global sea-to-air flux climatology Vogt, R. , Sander, R. ,sea-to-air flux climatology for bromoform, dibromomethane

2013-01-01T23:59:59.000Z

329

Atomic oxygen flux determined by mixed-phase Ag/Ag2O deposition...  

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

oxygen flux determined by mixed-phase AgAg2O deposition. Atomic oxygen flux determined by mixed-phase AgAg2O deposition. Abstract: The flux of atomic oxygen generated in a...

330

Super-Eddington Fluxes During Thermonuclear X-ray Bursts  

Science Journals Connector (OSTI)

It has been known for nearly three decades that the energy spectra of thermonuclear X-ray bursts are often well fit by Planck functions with temperatures so high that they imply a super-Eddington radiative flux at the emitting surface, even during portions of bursts when there is no evidence of photospheric radius expansion. This apparent inconsistency is usually set aside by assuming that the flux is actually sub-Eddington and that the fitted temperature is so high because the spectrum has been distorted by the energy-dependent opacity of the atmosphere. Here we show that the spectra predicted by currently available conventional atmosphere models appear incompatible with the highest precision measurements of burst spectra made using the Rossi X-ray Timing Explorer, such as during the 4U 182030 superburst and a long burst from GX 17+2. In contrast, these measurements are well fit by Bose-Einstein spectra with high temperatures and modest chemical potentials. Such spectra are very similar to Planck spectra. They imply surface radiative fluxes more than a factor of 3 larger than the Eddington flux. We find that segments of many other bursts from many sources are well fit by similar Bose-Einstein spectra, suggesting that the radiative flux at the emitting surface also exceeds the Eddington flux during these segments. We suggest that burst spectra can closely approximate Bose-Einstein spectra and have fluxes that exceed the Eddington flux because they are formed by Comptonization in an extended, low-density radiating gas supported by the outward radiation force and confined by a tangled magnetic field.

Stratos Boutloukos; M. Coleman Miller; Frederick K. Lamb

2010-01-01T23:59:59.000Z

331

Calculator Tips for TI-30XA  

E-Print Network (OSTI)

TI-30XA Calculator Tips. Calculator Memory. - To use the memory function, hit the STO key to store a number in either memory 1, 2, or 3. o To store the product of...

Owen Davis

2013-01-04T23:59:59.000Z

332

Building Energy Software Tools Directory: Duct Calculator  

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

Duct Calculator Duct Calculator Duct Calculator logo. Provides access to duct calculation and sizing capabilities either as a standalone Windows program or from within the Autodesk Building Mechanical, the new HVAC-oriented version of AutoCAD. Based on the engineering data and procedures outlined in the ASHRAE Fundamentals Handbook Calculation Methods, Duct Calculator features an advanced and fully interactive user interface. Slide controls for air flow, velocity, friction and duct size provide real-time, interactive feedback; as you spin one, the others dynamically respond in real time. When used with Autodesk Building Mechanical, Duct Calculator streamlines the design process by automatically re-sizing whole branches of ductwork. Screen Shots Keywords duct-sizing, design, engineering, calculation

333

Vehicle Cost Calculator | Open Energy Information  

Open Energy Info (EERE)

Vehicle Cost Calculator Vehicle Cost Calculator Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Vehicle Cost Calculator Agency/Company /Organization: National Renewable Energy Laboratory Sector: Energy Focus Area: Transportation Phase: Evaluate Options Resource Type: Online calculator User Interface: Website Website: www.afdc.energy.gov/calc/ Web Application Link: www.afdc.energy.gov/calc/ OpenEI Keyword(s): Energy Efficiency and Renewable Energy (EERE) Tools Language: English References: Vehicle Cost Calculator[1] Logo: Vehicle Cost Calculator Calculate the total cost of ownership and emissions for makes and models of most vehicles, including alternative fuel and advanced technology vehicles. Overview This tool uses basic information about your driving habits to calculate

334

On the Chaotic Flux Dynamics in a Long Josephson Junction  

E-Print Network (OSTI)

Flux dynamics in an annular long Josephson junction is studied. Three main topics are covered. The first is chaotic flux dynamics and its prediction via Melnikov integrals. It turns out that DC current bias cannot induce chaotic flux dynamics, while AC current bias can. The existence of a common root to the Melnikov integrals is a necessary condition for the existence of chaotic flux dynamics. The second topic is on the components of the global attractor and the bifurcation in the perturbation parameter measuring the strength of loss, bias and irregularity of the junction. The global attractor can contain co-existing local attractors e.g. a local chaotic attractor and a local regular attractor. In the infinite dimensional phase space setting, the bifurcation is very complicated. Chaotic attractors can appear and disappear in a random fashion. Three types of attractors (chaos, breather, spatially uniform and temporally periodic attractor) are identified. The third topic is ratchet effect. Ratchet effect can be achieved by a current bias field which corresponds to an asymmetric potential, in which case the flux dynamics is ever lasting chaotic. When the current bias field corresponds to a symmetric potential, the flux dynamics is often transiently chaotic, in which case the ratchet effect disappears after sufficiently long time.

Z. C. Feng; Y. Charles Li

2009-07-16T23:59:59.000Z

335

Audio taped explanations of freshman experimental calculations  

Science Journals Connector (OSTI)

The authors have found audio tapes to be effective replacements for live, in-lab explanations of experimental calculations.

Aline M. Harrison

1971-01-01T23:59:59.000Z

336

Calculations of Hf -electron affinity and  

E-Print Network (OSTI)

Calculations of Hf - electron affinity and photodetachment partial cross sections Lin Pan. PHYS. B 2009 #12;Calculations of Hf - electron affinity and photodetachment partial cross sections 2 1 the replacements, the subshells that are not occupied in #12;Calculations of Hf - electron affinity

Beck, Donald R.

337

E-Print Network 3.0 - atp synthetic flux Sample Search Results  

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

flux Search Powered by Explorit Topic List Advanced Search Sample search results for: atp synthetic flux Page: << < 1 2 3 4 5 > >> 1 A genetically encoded fluorescent reporter...

338

Flux expulsion and penetration in superconducting YBa2Cu3O7-?  

Science Journals Connector (OSTI)

A large difference in the rate of flux flow in YBa2Cu3O7-? superconductors is observed between flux expulsion (field cooling then removing the field) and flux penetration (zero-field cooling then switching on a field). The mean activation energy and the width of its distribution for flux expulsion are 14 and 28 meV and for flux penetration are 34 and 67 meV. The smaller activation barrier for flux expulsion relative to flux penetration can be explained quantitatively in terms of flux pinning at the surface image potential and is also consistent with a model of randomly coupled superconducting grains.

M. Foldeaki; M. E. McHenry; R. C. O'Handley

1989-02-01T23:59:59.000Z

339

E-Print Network 3.0 - anchored flux tubes Sample Search Results  

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

this is indicated... VAbgm and -VAbgm, respectively. (b) The equivalent velocity space diagram for an open flux tube anchored... . The motion of open flux ... Source: Ecole...

340

Etalon-induced Baseline Drift And Correction In Atom Flux Sensors...  

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

Etalon-induced Baseline Drift And Correction In Atom Flux Sensors Based On Atomic Absorption Spectroscopy. Etalon-induced Baseline Drift And Correction In Atom Flux Sensors Based...

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

ESTIMATION OF THE NEUTRINO FLUX AND RESULTING CONSTRAINTS ON HADRONIC EMISSION MODELS FOR Cyg X-3 USING AGILE DATA  

SciTech Connect

In this work, we give an estimate of the neutrino flux that can be expected from the microquasar Cyg X-3. We calculate the muon neutrino flux expected here on Earth as well as the corresponding number of neutrino events in the IceCube telescope based on the so-called hypersoft X-ray state of Cyg X-3. If the average emission from Cyg X-3 over a period of 5 yr were as high as during the used X-ray state, a total of 0.8 events should be observed by the full IceCube telescope. We also show that this conclusion holds by a factor of a few when we consider the other measured X-ray states. Using the correlation of AGILE data on the flaring episodes in 2009 June and July to the hypersoft X-ray state, we calculate that the upper limits on the neutrino flux given by IceCube are starting to constrain the hadronic models, which have been introduced to interpret the high-energy emission detected by AGILE.

Baerwald, P. [Institut fuer Theoretische Physik und Astrophysik, Universitaet Wuerzburg, Am Hubland, D-97074 Wuerzburg (Germany); Guetta, D. [Osservatorio Astronomico di Roma, v. Frascati 33, I-00040 Monte Porzio Catone (Italy)

2013-08-20T23:59:59.000Z

342

A Local Incident Flux Response Expansion Transport Method for Coupling to the Diffusion Method in Cylindrical Geometry  

SciTech Connect

A local incident flux response expansion transport method is developed to generate transport solutions for coupling to diffusion theory codes regardless of their solution method (e.g., fine mesh, nodal, response based, finite element, etc.) for reactor core calculations in both two-dimensional (2-D) and three-dimensional (3-D) cylindrical geometries. In this approach, a Monte Carlo method is first used to precompute the local transport solution (i.e., response function library) for each unique transport coarse node, in which diffusion theory is not valid due to strong transport effects. The response function library is then used to iteratively determine the albedo coefficients on the diffusion-transport interfaces, which are then used as the coupling parameters within the diffusion code. This interface coupling technique allows a seamless integration of the transport and diffusion methods. The new method retains the detailed heterogeneity of the transport nodes and naturally constructs any local solution within them by a simple superposition of local responses to all incoming fluxes from the contiguous coarse nodes. A new technique is also developed for coupling to fine-mesh diffusion methods/codes. The local transport method/module is tested in 2-D and 3-D pebble-bed reactor benchmark problems consisting of an inner reflector, an annular fuel region, and a controlled outer reflector. It is found that the results predicted by the transport module agree very well with the reference fluxes calculated directly by MCNP in both benchmark problems.

Dingkang Zhang; Farzad Rahnema; Abderrafi M. Ougouag

2013-09-01T23:59:59.000Z

343

Comparison Of Hybrid Methods For Global Variance Reduction In Shielding Calculations  

SciTech Connect

For Monte Carlo shielding problems that calculate a mesh tally over the entire problem, the relative uncertainties computed for each voxel can vary widely. This can lead to unacceptably long run times in order to reduce the uncertainties in all areas of the problem to a reasonably low level. Hybrid methods using estimates from deterministic calculations to create importance maps for variance reduction in Monte Carlo calculations have been successfully used to optimize the calculation of specific tallies. For the global problem, several methods have been proposed that create importance maps that distribute Monte Carlo particles in such a way as to achieve a more uniform distribution of relative uncertainty across the problem. The goal is to compute a mesh tally with nearly the same relative uncertainties in the low flux/dose areas as in the high flux/dose areas. Methods based on only forward deterministic estimates and methods using both forward and adjoint deterministic methods have been implemented the SCALE/MAVRIC package and have been compared against each other by computing global mesh tallies on several representative shielding problems. Methods using both forward and adjoint estimates provide better performance for computing more uniform relative uncertainties across a global mesh tally.

Peplow, Douglas E. [ORNL

2013-01-01T23:59:59.000Z

344

Distributed Energy Calculator | Open Energy Information  

Open Energy Info (EERE)

Distributed Energy Calculator Distributed Energy Calculator Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Distributed Energy Calculator Agency/Company /Organization: Apps for Energy Challenge Participant Sector: Energy Resource Type: Application prototype User Interface: Website Website: distributedenergycalculator.com/ OpenEI Keyword(s): Challenge Generated, Green Button Apps Language: English References: Apps for Energy[1] The Distributed Energy Calculator allows you to explore the potential energy savings for your community using Solar, Small Wind or Microturbines. The Distributed Energy Calculator allows you to explore the potential energy savings for your community using Solar, Small Wind or Microturbines. You can upload Green Button Data to compare your utility energy costs to

345

Definition: Interchange Distribution Calculator | Open Energy Information  

Open Energy Info (EERE)

Distribution Calculator Distribution Calculator Jump to: navigation, search Dictionary.png Interchange Distribution Calculator The mechanism used by Reliability Coordinators in the Eastern Interconnection to calculate the distribution of Interchange Transactions over specific Flowgates. It includes a database of all Interchange Transactions and a matrix of the Distribution Factors for the Eastern Interconnection.[1] Related Terms Reliability Coordinator, Interchange Transaction References ↑ Glossary of Terms Used in Reliability Standards An i LikeLike UnlikeLike You like this.Sign Up to see what your friends like. nline Glossary Definition Retrieved from "http://en.openei.org/w/index.php?title=Definition:Interchange_Distribution_Calculator&oldid=480261" Categories: Definitions

346

Chalmers Climate Calculator | Open Energy Information  

Open Energy Info (EERE)

Chalmers Climate Calculator Chalmers Climate Calculator Jump to: navigation, search Tool Summary Name: Chalmers Climate Calculator Agency/Company /Organization: Chalmers University of Technology Sector: Energy, Land Topics: Baseline projection, Co-benefits assessment, GHG inventory, Pathways analysis Resource Type: Software/modeling tools User Interface: Website Website: dhcp2-pc011134.fy.chalmers.se Cost: Free Chalmers Climate Calculator Screenshot References: Chalmers Climate Calculator[1] Logo: Chalmers Climate Calculator " In the Chalmers Climate Calculator the user can decide on when and how fast emissions of CO2 are reduced and what this emissions scenario implies in terms of CO2 concentration and global average surface temperature change. The climate sensitivity and the net aerosol forcing in year 2005

347

Harmonic Analysis Errors in Calculating Dipole,  

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

Harmonic Analysis Errors in Calculating Dipole, Harmonic Analysis Errors in Calculating Dipole, Quadrupole, and Sextupole Magnets using POISSON Ro be rt J. La ri<::::R~ i. September 10, 1985 Introduction LS-32 The computer program POISSON was used to calculate the dipole, quadru- pole, and sextupole magnets of the 6 GeV electron storage ring. A trinagular mesh must first be generated by LATTICE. The triangle size is varied over the "universe" at the discretion of the user. This note describes a series of test calculations that were made to help the user decide on the size of the mesh to reduce the harmonic field calculation errors. A conformal transfor- mation of a multipole magnet into a dipole reduces these errors. Dipole Magnet Calculations A triangular mesh used to calculate a "perfect" dipole magnet is shown in

348

Rhodium self-powered neutron detector as a suitable on-line thermal neutron flux monitor in BNCT treatments  

SciTech Connect

Purpose: A rhodium self-powered neutron detector (Rh SPND) has been specifically developed by the Comision Nacional de Energia Atomica (CNEA) of Argentina to measure locally and in real time thermal neutron fluxes in patients treated with boron neutron capture therapy (BNCT). In this work, the thermal and epithermal neutron response of the Rh SPND was evaluated by studying the detector response to two different reactor spectra. In addition, during clinical trials of the BNCT Project of the CNEA, on-line neutron flux measurements using the specially designed detector were assessed. Methods: The first calibration of the detector was done with the well-thermalized neutron spectrum of the CNEA RA-3 reactor thermal column. For this purpose, the reactor spectrum was approximated by a Maxwell-Boltzmann distribution in the thermal energy range. The second calibration was done at different positions along the central axis of a water-filled cylindrical phantom, placed in the mixed thermal-epithermal neutron beam of CNEA RA-6 reactor. In this latter case, the RA-6 neutron spectrum had been well characterized by both calculation and measurement, and it presented some marked differences with the ideal spectrum considered for SPND calibrations at RA-3. In addition, the RA-6 neutron spectrum varied with depth in the water phantom and thus the percentage of the epithermal contribution to the total neutron flux changed at each measurement location. Local (one point-position) and global (several points-positions) and thermal and mixed-field thermal neutron sensitivities were determined from these measurements. Thermal neutron flux was also measured during BNCT clinical trials within the irradiation fields incident on the patients. In order to achieve this, the detector was placed on patient's skin at dosimetric reference points for each one of the fields. System stability was adequate for this kind of measurement. Results: Local mixed-field thermal neutron sensitivities and global thermal and mixed-field thermal neutron sensitivities derived from measurements performed at the RA-6 were compared and no significant differences were found. Global RA-6-based thermal neutron sensitivity showed agreement with pure thermal neutron sensitivity measurements performed in the RA-3 spectrum. Additionally, the detector response proved nearly unchanged by differences in neutron spectra from real (RA-6 BNCT beam) and ideal (considered for calibration calculations at RA-3) neutron source descriptions. The results confirm that the special design of the Rh SPND can be considered as having a pure thermal response for neutron spectra with epithermal-to-thermal flux ratios up to 12%. In addition, the linear response of the detector to thermal flux allows the use of a mixed-field thermal neutron sensitivity of 1.95 {+-} 0.05 x 10{sup -21} A n{sup -1}{center_dot}cm{sup 2}{center_dot}s. This sensitivity can be used in spectra with up to 21% epithermal-to-thermal flux ratio without significant error due to epithermal neutron and gamma induced effects. The values of the measured fluxes in clinical applications had discrepancies with calculated results that were in the range of -25% to +30%, which shows the importance of a local on-line independent measurement as part of a treatment planning quality control system. Conclusions: The usefulness of the CNEA Rh SPND for the on-line local measurement of thermal neutron flux on BNCT patients has been demonstrated based on an appropriate neutron spectra calibration and clinical applications.

Miller, Marcelo E.; Sztejnberg, Manuel L.; Gonzalez, Sara J.; Thorp, Silvia I.; Longhino, Juan M.; Estryk, Guillermo [Comision Nacional de Energia Atomica, Av. del Libertador 8250, Ciudad de Buenos Aires 1429 (Argentina); Comision Nacional de Energia Atomica, Av. del Libertador 8250, Ciudad de Buenos Aires 1429, Argentina and CONICET, Av. Rivadavia 1917, Ciudad de Buenos Aires 1033 (Argentina); Comision Nacional de Energia Atomica, Av. del Libertador 8250, Ciudad de Buenos Aires 1429 (Argentina)

2011-12-15T23:59:59.000Z

349

A limit on the ultra-high-energy neutrino flux from lunar observations with the Parkes radio telescope  

E-Print Network (OSTI)

We report a limit on the ultra-high-energy neutrino flux based on a non-detection of radio pulses from neutrino-initiated particle cascades in the Moon, in observations with the Parkes radio telescope undertaken as part of the LUNASKA project. Due to the improved sensitivity of these observations, which had an effective duration of 127 hours and a frequency range of 1.2-1.5 GHz, this limit extends to lower neutrino energies than those from previous lunar radio experiments, with a detection threshold below 10^20 eV. The calculation of our limit allows for the possibility of lunar-origin pulses being misidentified as local radio interference, and includes the effect of small-scale lunar surface roughness. The targeting strategy of the observations also allows us to place a directional limit on the neutrino flux from the nearby radio galaxy Centaurus A.

Bray, J D; Roberts, P; Reynolds, J E; James, C W; Phillips, C J; Protheroe, R J; McFadden, R A; Aartsen, M G

2015-01-01T23:59:59.000Z

350

Reactor physics input to the safety analysis report for the High Flux Isotope Reactor  

SciTech Connect

HFIR specific, few group neutron and coupled neutron-gamma libraries have been prepared. These are based on data from ENDF/B-V and beginning-of-life (BOL) conditions. The neutron library includes actinide data for curium target rods. Six critical experiments, collectively designated HFIR critical experiment 4, were analyzed. Calculated k-effective was 2% high at BOL-typical conditions but was 1.0 at end-of-life-typical conditions. The local power density distributions were calculated for each of the critical experiments. The axially averaged values at a given radius were frequently within experimental error. However at individual points, the calculated local power densities were significantly different from the experimentally derived values (several times greater than experimental uncertainty). A reassessment of the foil activation data with transport theory techniques seems desirable. Using the results of the critical experiments study, a model of current HFIR configuration was prepared. As with the critical experiments, BOL k-effective was high (3%). However, end-of-life k-effective was high (2%). The end-of-life concentrations of fission products were compared to those generated using the ORIGEN code. Agreement was generally good through differences in the inventories of some important nuclides, Xe and I, need to be understood. End-of-cycle curium target isotopics based on measured, discharged target rods were compared to calculated values and agreement was good. Axial flux plots at various irradiation positions were generated. Time-dependent power distributions based on two-dimensional calculations were provided.

Primm, R.T. III.

1992-03-01T23:59:59.000Z

351

Downstream Heat Flux Profile vs. Midplane T Profile in Tokamaks  

SciTech Connect

The relationship between the midplane scrape-off-layer electron temperature profile and the parallel heat flux profile at the divertor in tokamaks is investigated. A model is applied which takes into account anisotropic thermal diffusion, in a rectilinear geometry with constant density. Eigenmode analysis is applied to the simplified problem with constant thermal diffusivities. A self-similar nonlinear solution is found for the more realistic problem with anisotropically temperature-dependent thermal diffusivities. Numerical solutions are developed for both cases, with spatially dependent heat flux emerging from the plasma. For both constant and temperature-dependent thermal diffusivities it is found that, below about one-half of its peak, the heat flux profile shape at the divertor, compared with the midplane temperature profile shape, is robustly described by the simplest two-point model. However the physical processes are not those assumed in the simplest two-point model, nor is the numerical coefficient relating q||div to Tmp ?||mp/L|| as predicted. For realistic parameters the peak in the heat flux, moreover, can be reduced by a factor of two or more from the two-point model scaling which fits the remaining profile. For temperature profiles in the SOL region above the x-point set by marginal stability, the heat flux profile to the divertor can be largely decoupled from the prediction of the two-point model. These results suggest caveats for data interpretation, and possibly favorable outcomes for divertor configurations with extended field lines.

Robert J. Goldston

2009-08-20T23:59:59.000Z

352

The Dynamics of Flux Tubes in a High Beta Plasma  

E-Print Network (OSTI)

We suggest a new model for the structure of a magnetic field embedded high $\\beta$ turbulent plasma, based on the popular notion that the magnetic field will tend to separate into individual flux tubes. We point out that interactions between the flux tubes will be dominated by coherent effects stemming from the turbulent wakes created as the fluid streams by the flux tubes. Balancing the attraction caused by shielding effects with turbulent diffusion we find that flux tubes have typical radii comparable to the local Mach number squared times the large scale eddy length, are arranged in a one dimensional fractal pattern, have a radius of curvature comparable to the largest scale eddies in the turbulence, and have an internal magnetic pressure comparable to the ambient pressure. When the average magnetic energy density is much less than the turbulent energy density the radius, internal magnetic field and curvature scale of the flux tubes will be smaller than these estimates. Realistic resistivity does not alter the macroscopic properties of the fluid or the large scale magnetic field. In either case we show that the Sweet-Parker reconnection rate is much faster than an eddy turnover time. Realistic stellar plasmas are expected to either be in the ideal limit (e.g. the solar photosphere) or the resistive limit (most of the solar convection zone). All current numerical simulations of three dimensional MHD turbulence are in the viscous regime and are inapplicable to stars or accretion disks.

E. T. Vishniac

1994-07-21T23:59:59.000Z

353

Neutrino fluxes from nonuniversal Higgs mass LSP annihilations in the Sun  

SciTech Connect

We extend our previous studies of the neutrino fluxes expected from neutralino LSP annihilations inside the Sun to include variants of the minimal supersymmetric extension of the Standard Model (MSSM) with squark, slepton and gaugino masses constrained to be universal at the GUT scale, but allowing one or two nonuniversal supersymmetry breaking parameters contributing to the Higgs masses (NUHM1,2). As in the constrained MSSM (CMSSM) with universal Higgs masses, there are large regions of the NUHM parameter space where the LSP density inside the Sun is not in equilibrium, so that the annihilation rate may be far below the capture rate, and there are also large regions where the capture rate is not dominated by spin-dependent LSP-proton scattering. The spectra possible in the NUHM are qualitatively similar to those in the CMSSM. We calculate neutrino-induced muon fluxes above a threshold energy of 10 GeV, appropriate for the IceCube/DeepCore detector, for points where the NUHM yields the correct cosmological relic density for representative choices of the NUHM parameters. We find that the IceCube/DeepCore detector can probe regions of the NUHM parameter space in addition to analogues of the focus point strip and the tip of the coannihilation strip familiar from the CMSSM. These include regions with enhanced Higgsino-gaugino mixing in the LSP composition, that occurs where neutralino mass eigenstates cross over. On the other hand, rapid-annihilation funnel regions in general yield neutrino fluxes that are unobservably small.

Ellis, John [TH Division, Physics Department, CERN, 1211 Geneva 23, Switzerland and Theoretical Physics and Cosmology Group, Department of Physics, King's College London, London WC2R 2LS (United Kingdom); Olive, Keith A. [William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455 (United States) and Department of Physics and SLAC, Stanford University, Palo Alto, California 94305 (United States); Savage, Christopher [Oskar Klein Centre for Cosmoparticle Physics, Department of Physics, Stockholm University, AlbaNova, SE-10691 Stockholm (Sweden); Spanos, Vassilis C. [Institute of Nuclear Physics, NCSR 'Demokritos', GR-15310 Athens (Greece)

2011-04-15T23:59:59.000Z

354

Neutrino fluxes from constrained minimal supersymmetric standard model lightest supersymmetric particle annihilations in the Sun  

SciTech Connect

We evaluate the neutrino fluxes to be expected from neutralino lightest supersymmetric particle (LSP) annihilations inside the Sun, within the minimal supersymmetric extension of the standard model with supersymmetry-breaking scalar and gaugino masses constrained to be universal at the grand unified theory scale [the constrained minimal supersymmetric standard model (CMSSM)]. We find that there are large regions of typical CMSSM (m{sub 1/2},m{sub 0}) planes where the LSP density inside the Sun is not in equilibrium, so that the annihilation rate may be far below the capture rate. We show that neutrino fluxes are dependent on the solar model at the 20% level, and adopt the AGSS09 model of Serenelli et al. for our detailed studies. We find that there are large regions of the CMSSM (m{sub 1/2},m{sub 0}) planes where the capture rate is not dominated by spin-dependent LSP-proton scattering, e.g., at large m{sub 1/2} along the CMSSM coannihilation strip. We calculate neutrino fluxes above various threshold energies for points along the coannihilation/rapid-annihilation and focus-point strips where the CMSSM yields the correct cosmological relic density for tan{beta}=10 and 55 for {mu}>0, exploring their sensitivities to uncertainties in the spin-dependent and -independent scattering matrix elements. We also present detailed neutrino spectra for four benchmark models that illustrate generic possibilities within the CMSSM. Scanning the cosmologically favored parts of the parameter space of the CMSSM, we find that the IceCube/DeepCore detector can probe at best only parts of this parameter space, notably the focus-point region and possibly also at the low-mass tip of the coannihilation strip.

Ellis, John [TH Division, Physics Department, CERN, 1211 Geneva 23 (Switzerland); Olive, Keith A. [William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455 (United States); Savage, Christopher [Oskar Klein Centre for Cosmoparticle Physics, Department of Physics, Stockholm University, AlbaNova, SE-10691 Stockholm (Sweden); Spanos, Vassilis C. [Department of Physics, University of Patras, GR-26500 Patras (Greece)

2010-04-15T23:59:59.000Z

355

Measurements of Plasma Jets and Collimated Flux Tubes that are the Precursors of Spheromak Self-organization  

Science Journals Connector (OSTI)

A magnetized planar coaxial plasma gun is used to study the physics of spheromak formation. Eight magnetic flux tubes spanning from...the pile-up of this flux in the flux tube causes the flux tube to become colli...

P. M. Bellan; S. You; G. S. Yun

2007-06-01T23:59:59.000Z

356

GLOBAL AND LOCAL CUTOFF FREQUENCIES FOR TRANSVERSE WAVES PROPAGATING ALONG SOLAR MAGNETIC FLUX TUBES  

SciTech Connect

It is a well-established result that the propagation of linear transverse waves along a thin but isothermal magnetic flux tube is affected by the existence of the global cutoff frequency, which separates the propagating and non-propagating waves. In this paper, the wave propagation along a thin and non-isothermal flux tube is considered and a local cutoff frequency is derived. The effects of different temperature profiles on this local cutoff frequency are studied by considering different power-law temperature distributions, as well as the semi-empirical VAL C model of the solar atmosphere. The obtained results show that the conditions for wave propagation strongly depend on the temperature gradients. Moreover, the local cutoff frequency calculated for the VAL C model gives constraints on the range of wave frequencies that are propagating in different parts of the solar atmosphere. These theoretically predicted constraints are compared to observational data and are used to discuss the role played by transverse tube waves in the atmospheric heating and dynamics, and in the excitation of solar atmospheric oscillations.

Routh, S. [Department of Physics, R. V. College of Engineering, Bangalore (India)] [Department of Physics, R. V. College of Engineering, Bangalore (India); Musielak, Z. E. [Department of Physics, University of Texas at Arlington, Arlington, TX 76019 (United States)] [Department of Physics, University of Texas at Arlington, Arlington, TX 76019 (United States); Hammer, R., E-mail: routhswati@rvce.edu.in, E-mail: zmusielak@uta.edu, E-mail: hammer@kis.uni-freiburg.de [Kiepenheuer-Institut fuer Sonnenphysik, Schoeneckstr. 6, Freiburg, D-79104 Germany (Germany)

2013-01-20T23:59:59.000Z

357

Constraints on the flux of Ultra-High Energy neutrinos from WSRT observations  

SciTech Connect

Context. Ultra-high energy (UHE) neutrinos and cosmic rays initiate particle cascades underneath theMoon?s surface. These cascades have a negative charge excess and radiate Cherenkov radio emission in a process known as the Askaryan effect. The optimal frequencywindow for observation of these pulses with radio telescopes on the Earth is around 150 MHz. Aims. By observing the Moon with the Westerbork Synthesis Radio Telescope array we are able to set a new limit on the UHEneutrino flux. Methods. The PuMa II backend is used to monitor the Moon in 4 frequency bands between 113 and 175 MHz with a samplingfrequency of 40 MHz. The narrowband radio interference is digitally filtered out and the dispersive effect of the Earth?s ionosphere is compensated for. A trigger system is implemented to search for short pulses. By inserting simulated pulses in the raw data, thedetection efficiency for pulses of various strength is calculated. Results. With 47.6 hours of observation time, we are able to set a limit onthe UHE neutrino flux. This new limit is an order of magnitude lower than existing limits. In the near future, the digital radio array LOFAR will be used to achieve an even lower limit.

Scholten, O.; Bacelar, J.; Braun, R.; de Bruyn, A.G.; Falcke, H.; Singh, K.; Stappers, B.; Strom, R.G.; al Yahyaoui, R.

2010-04-02T23:59:59.000Z

358

Gas Flux Sampling (Laney, 2005) | Open Energy Information  

Open Energy Info (EERE)

Gas Flux Sampling (Laney, 2005) Gas Flux Sampling (Laney, 2005) Exploration Activity Details Location Unspecified Exploration Technique Gas Flux Sampling Activity Date Usefulness not indicated DOE-funding Unknown Notes Design of Sampling Strategies to Detect CO2 Emissions From Hidden Geothermal Systems, Lewicki, Oldenburg and Kennedy. The objective of this project is to investigate geothermal CO2 monitoring in the near surface as a tool to discover hidden geothermal reservoirs. A primary goal of this project is to develop an approach that places emphasis on cost and time-efficient near-surface exploration methods and yields results to guide and focus more cost-intensive geophysical measurements, installation of deep wells, and geochemical analyses of deep fluids. To this end, we present (1) the physical properties of CO2 key to its transport in the

359

High Flux Beam Reactor | Environmental Restoration Projects | BNL  

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

Why is the High Flux Beam Reactor Being Decommissioned? Why is the High Flux Beam Reactor Being Decommissioned? HFBR The High Flux Beam Reactor (HFBR) at Brookhaven National Laboratory (BNL) is being decommissioned because the Department of Energy (DOE) decided in 1999 that it would be permanently closed. The reactor was shut down in 1997 after tritium from a leak in the spent-fuel pool was found in the groundwater. The HFBR, which had operated from 1965 to 1996, was used solely for scientific research, providing neutrons for materials science, chemistry, biology, and physics experiments. The reactor was shut down for routine maintenance in November of 1996. In January 1997, tritium, a radioactive form of hydrogen and a by-product of reactor operations, was found in groundwater monitoring wells immediately south of the HFBR. The tritium

360

The Sensitivity of Radiative Fluxes to Parameterized Cloud Microphysics  

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

Sensitivity of Radiative Fluxes to Sensitivity of Radiative Fluxes to Parameterized Cloud Microphysics S. F. Iacobellis and R. C. J. Somerville Scripps Institution of Oceanography University of California San Diego, California G. M. McFarquhar University of Illinois at Urbana-Champaign Urbana, Illinois D. L. Mitchell Desert Research Institute Las Vegas, Nevada Introduction We have used a single-column model (SCM) to examine the sensitivity of fundamental quantities such as atmospheric radiative heating rates and surface and top of atmosphere (TOA) radiative fluxes to various parameterizations of clouds and cloud microphysics. When an SCM, which consists of one isolated column of a global atmospheric model, is forced with observational estimates of horizontal advection terms, the parameterizations within the SCM produce time-dependent fields which can be

Note: This page contains sample records for the topic "vls-pgm calculated flux" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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361

Sensitivity of Radiative Fluxes and Heating Rates to Cloud Microphysics  

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

Sensitivity of Radiative Fluxes and Heating Sensitivity of Radiative Fluxes and Heating Rates to Cloud Microphysics S. F. Iacobellis and R. C. J. Somerville Scripps Institution of Oceanography University of California, San Diego La Jolla, California G. M. McFarquhar University of Illinois at Urbana-Champaign Urbana, Illinois D. L. Mitchell Desert Research Institute Reno, Nevada Introduction A single-column model (SCM) is used to examine the sensitivity of basic quantities such as atmospheric radiative heating rates and surface and top of atmosphere (TOA) radiative fluxes to various parameter- izations of clouds and cloud microphysics. The SCM was run at the Atmospheric Radiation Measurement (ARM) Program's Southern Great Plains (SGP), Tropical Western Pacific (TWP), and North Slope of Alaska (NSA) sites using forcing data derived from forecast products. The forecast

362

Advancements in the ADAPT Photospheric Flux Transport Model  

E-Print Network (OSTI)

Maps of the solar photospheric magnetic flux are fundamental drivers for simulations of the corona and solar wind which makes photospheric simulations important predictors of solar events on Earth. However, observations of the solar photosphere are only made intermittently over small regions of the solar surface. The Air Force Data Assimilative Photospheric Flux Transport (ADAPT) model uses localized ensemble Kalman filtering techniques to adjust a set of photospheric simulations to agree with the available observations. At the same time this information is propagated to areas of the simulation that have not been observed. ADAPT implements a local ensemble transform Kalman filter (LETKF) to accomplish data assimilation, allowing the covariance structure of the flux transport model to influence assimilation of photosphere observations while eliminating spurious correlations between ensemble members arising from a limited ensemble size. We give a detailed account of the ADAPT model and the implementation of the LETKF. Advantages of the LETKF scheme over previously implemented assimilation methods are highlighted.

Kyle S. Hickmann; Humberto C. Godinez; Carl J. Henney; C. Nick Arge

2014-10-22T23:59:59.000Z

363

Simulating AIA observations of a flux rope ejection  

E-Print Network (OSTI)

Extreme ultraviolet (EUV) images from the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamic Observatory (SDO) are providing new insights into the early phase of CME evolution. Observations now show the ejection of magnetic flux ropes from the solar corona and how they evolve into CMEs. These observations are difficult to interpret in terms of basic physical mechanisms and quantities. To fully understand CMEs we need to compare equivalent quantities derived from both observations and theoretical models. To this end we aim to produce synthesised AIA observations from simluations of a flux rope ejection. To carry this out we include the role of thermal conduction and radiative losses, both of which are important for determining the temperature distribution of the solar corona during a CME. We perform a simulation where a flux rope is ejected from the solar corona. From the density and temperature of the plasma in the simulation we synthesise AIA observations. The emission is then integrated along the...

Pagano, Paolo; Poedts, Stefaan

2014-01-01T23:59:59.000Z

364

Strip casting with fluxing agent applied to casting roll  

DOE Patents (OSTI)

A strip caster (10) for producing a continuous strip (24) includes a tundish (12) for containing a melt (14), a pair of horizontally disposed water cooled casting rolls (22) and devices (29) for electrostatically coating the outer peripheral chill surfaces (44) of the casting rolls with a powder flux material (56). The casting rolls are juxtaposed relative to one another for forming a pouting basin (18) for receiving the melt through a teeming tube (16) thereby establishing a meniscus (20) between the rolls for forming the strip. The melt is protected from the outside air by a non-oxidizing gas passed through a supply line (28) to a sealing chamber (26). A preferred flux is boron oxide having a melting point of about 550.degree. C. The flux coating enhances wetting of the steel melt to the casting roll and dissolves any metal oxide formed on the roll.

Williams, Robert S. (Fairfield, OH); O'Malley, Ronald J. (Miamisburg, OH); Sussman, Richard C. (West Chester, OH)

1997-01-01T23:59:59.000Z

365

Remote high-temperature insulatorless heat-flux gauge  

DOE Patents (OSTI)

A remote optical heat-flux gauge for use in extremely high temperature environments is described. This application is possible because of the use of thermographic phosphors as the sensing media, and the omission of the need for an intervening layer of insulator between phosphor layers. The gauge has no electrical leads, but is interrogated with ultraviolet or laser light. The luminescence emitted by the two phosphor layers, which is indicative of the temperature of the layers, is collected and analyzed in order to determine the heat flux incident on the surface being investigated. The two layers of thermographic phosphor must be of different materials to assure that the spectral lines collected will be distinguishable. Spatial heat-flux measurements can be made by scanning the light across the surface of the gauge. 3 figures.

Noel, B.W.

1993-12-28T23:59:59.000Z

366

Remote high-temperature insulatorless heat-flux gauge  

DOE Patents (OSTI)

A remote optical heat-flux gauge for use in extremely high temperature environments is described. This application is possible because of the use of thermographic phosphors as the sensing media, and the omission of the need for an intervening layer of insulator between phosphor layers. The gauge has no electrical leads, but is interrogated with ultraviolet or laser light. The luminescence emitted by the two phosphor layers, which is indicative of the temperature of the layers, is collected and analyzed in order to determine the heat flux incident on the surface being investigated. The two layers of thermographic phosphor must be of different materials to assure that the spectral lines collected will be distinguishable. Spatial heat-flux measurements can be made by scanning the light across the surface of the gauge.

Noel, Bruce W. (Espanola, NM)

1993-01-01T23:59:59.000Z

367

Molecular isotopic effects on coupled electronic and nuclear fluxes  

SciTech Connect

A full quantum treatment shows that coupled electronic and nuclear fluxes exhibit a strong sensitivity to a small mass change in a vibrating molecule. This has been exemplified with the existing isotopes of H{sub 2}{sup +} as well as few fictitious ones. We find that the fluxes undergo a significant change as one goes from one isotope of reduced mass {mu} to another. Other well-defined observables are likewise affected. It turns out that as a general rule, the heavier the isotope, the larger the flux, the smaller the dispersion, and the longer the revival period. While we were able to confirm analytically that the time at the first turning point scales as {radical}({mu}) and that the revival period changes linearly with {mu}, the mechanism of other observables remains subtle as the result of quantum interference highlighted by the pronounced difference observed on the dispersion pattern.

Kenfack, A.; Paulus, B. [Physikalische und Theoretische Chemie, Institut fuer Chemie und Biochemie, Freie Universitaet Berlin, D-14195 Berlin (Germany); Barth, I. [Physikalische und Theoretische Chemie, Institut fuer Chemie und Biochemie, Freie Universitaet Berlin, D-14195 Berlin (Germany); Max-Born-Institut, Max-Born-Strasse 2A, D-12489 Berlin (Germany); Marquardt, F. [Visualisierung und Datenanalyse, Zuse Institut Berlin, D-14195 Berlin (Germany); Fachbereich Mathematik, Freie Universitaet Berlin, D-14195 Berlin (Germany)

2010-12-15T23:59:59.000Z

368

CRAD, Conduct of Operations - Oak Ridge National Laboratory High Flux  

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

Reactor Contractor ORR Reactor Contractor ORR CRAD, Conduct of Operations - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February, 2007 assessment of the Conduct of Operations Program portion of an Operational Readiness Review of the Oak Ridge National Laboratory, High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Conduct of Operations - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR More Documents & Publications

369

Some Calculations for Cold Fusion Superheavy Elements  

E-Print Network (OSTI)

The Q value and optimal exciting energy of the hypothetical superheavy nuclei in cold fusion reaction are calculated with relativistic mean field model and semiemperical shell model mass equation(SSME) and the validity of the two models is tested. The fusion barriers are also calculated with two different models and reasonable results are obtained. The calculations can give useful references for the experiments in the superheavy nuclei synthesized in cold fusion reactions.

Zhong, X H; Ning, P Z

2004-01-01T23:59:59.000Z

370

Some Calculations for Cold Fusion Superheavy Elements  

E-Print Network (OSTI)

The Q value and optimal exciting energy of the hypothetical superheavy nuclei in cold fusion reaction are calculated with relativistic mean field model and semiemperical shell model mass equation(SSME) and the validity of the two models is tested. The fusion barriers are also calculated with two different models and reasonable results are obtained. The calculations can give useful references for the experiments in the superheavy nuclei synthesized in cold fusion reactions.

X. H. Zhong; L. Li; P. Z. Ning

2004-10-18T23:59:59.000Z

371

USAID Carbon Calculator | Open Energy Information  

Open Energy Info (EERE)

Logo: USAID Carbon Calculator This tool allows users to systematically estimate the CO2 benefits and consequent climate impacts of agriculture, forestry and other land use...

372

Evaluation Of Chemical Geothermometers For Calculating Reservoir...  

Open Energy Info (EERE)

Geothermometers For Calculating Reservoir Temperatures At Nevada Geothermal Power Plants Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper:...

373

Hybrid Car Calculator | Open Energy Information  

Open Energy Info (EERE)

compare hybrid electric (HEV) and conventional vehicles. The calculator includes purchase price, fuel costs, repair and maintenance costs, resale value, and applicable tax...

374

Development of a passive soil gas flux sampler  

E-Print Network (OSTI)

DEVELOPMENT OF A PASSIVE SOIL GAS FLUX SAMPLER A Thesis by BRIAN C. McQUOWN Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December 1991... Major Subject: Civil Engineering DEVELOPMENT OF A PASSIVE SOIL GAS FLUX SAMPLER A Thesis by BRIAN C. McQUOWN Approved as to style and content by: Stuart A. a terman (Co-chair of Committee) Andrew . cFa land (Member) Bill Batchelor (Co...

McQuown, Brian C

2012-06-07T23:59:59.000Z

375

Dipole trapped spheromak in a prolate flux conserver  

Science Journals Connector (OSTI)

This paper reports the observation and characterization of a spheromak formed in the Swarthmore Spheromak Experiment (SSX [M. R. Brown Phys. Plasmas6 1717 (1999)]) and trapped in a simple dipole magnetic field. The spheromak is studied in a prolate (tilt unstable) 0.4 m diameter 0.6 m length copper flux conserver in SSX. This plasma does not tilt despite the prolate flux conserver. The spheromak is characterized by a suite of magnetic probe arrays for magnetic structure B ( r t ) ion Doppler spectroscopy for T i and flow and interferometry for n e . Three-dimensional magnetohydrodynamics simulations of this configuration verify its gross sta-bility.

M. R. Brown; C. D. Cothran; J. Fung; M. Chang; J. Horwitz; M. J. Schaffer; J. Leuer; E. V. Belova

2006-01-01T23:59:59.000Z

376

Artificial neural network based torque calculation of switched reluctance motor without locking the rotor  

Science Journals Connector (OSTI)

Feedback of motor torque is required in most of switched reluctance (SR) motor applications in order to control torque and its ripple. An SR motor shows highly nonlinear property which does not allow calculating torque analytically. Torque can be directly measured by torque sensor but it inevitably increases the cost and has to be properly mounted on the motor shaft. Instead of torque sensor finite element analysis(FEA) may be employed for torque calculation. However motor modeling and calculation takes relatively long time. The results of FEA may also differ from the actual results. The most convenient way seems to calculate torque from the measured values of rotor position current and flux linkage while locking the rotor at definite positions. However this method needs an extra assembly to lock the rotor. In this study a novel torque calculation based on artificial neural networks (ANNs) is presented. Magnetizing data are collected while a 6/4 SR motor is running. They need to be interpolated for torque calculation. ANN is very strong tool for data interpolation. ANN based torque estimation is verified on the 6/4 SR motor and is compared by FEA based torque estimation to show its validity.

Fuat Kucuk; Hiroki Goto; Hai-Jiao Guo; Osamu Ichinokura

2009-01-01T23:59:59.000Z

377

Current amplifier and flux-buffer designs using an exponential flux shuttle with a Josephson junction synthetic inductor  

SciTech Connect

A current amplifier design based on the principle of fluxon propagation in a multi-junction Exponential Flux Shuttle has been investigated. In this design, the critical current of the junction is increased exponentially and the SQUID inductance is a JJ (Josephson Junction) equivalent inductance. Current gain can be achieved by generating fluxons at the low end and dissipating them at the high end where the load is located. Advantages over other types of linear devices are discussed. Two parallel Exponential Flux Shuttles can be used to duplicate flux from a high inductance input coil t a low inductance output. Device performance of the two circuits are evaluated by computer simulation, noise performance is discussed.

Gershenson, M.

1989-03-01T23:59:59.000Z

378

A FLUX ROPE NETWORK AND PARTICLE ACCELERATION IN THREE-DIMENSIONAL RELATIVISTIC MAGNETIC RECONNECTION  

SciTech Connect

We investigate magnetic reconnection and particle acceleration in relativistic pair plasmas with three-dimensional particle-in-cell simulations of a kinetic-scale current sheet in a periodic geometry. We include a guide field that introduces an inclination between the reconnecting field lines and explore outside-of-the-current sheet magnetizations that are significantly below those considered by other authors carrying out similar calculations. Thus, our simulations probe the transitional regime in which the magnetic and plasma pressures are of the same order of magnitude. The tearing instability is the dominant mode in the current sheet for all guide field strengths, while the linear kink mode is less important even without the guide field, except in the lower magnetization case. Oblique modes seem to be suppressed entirely. In its nonlinear evolution, the reconnection layer develops a network of interconnected and interacting magnetic flux ropes. As smaller flux ropes merge into larger ones, the reconnection layer evolves toward a three-dimensional, disordered state in which the resulting flux rope segments contain magnetic substructure on plasma skin depth scales. Embedded in the flux ropes, we detect spatially and temporally intermittent sites of dissipation reflected in peaks in the parallel electric field. Magnetic dissipation and particle acceleration persist until the end of the simulations, with simulations with higher magnetization and lower guide field strength exhibiting greater and faster energy conversion and particle energization. At the end of our largest simulation, the particle energy spectrum attains a tail extending to high Lorentz factors that is best modeled with a combination of two additional thermal components. We confirm that the primary energization mechanism is acceleration by the electric field in the X-line region. The highest-energy positrons (electrons) are moderately beamed with median angles {approx}30 Degree-Sign -40 Degree-Sign relative to (the opposite of) the direction of the initial current density, but we speculate that reconnection in more highly magnetized plasmas would give rise to stronger beaming. Finally, we discuss the implications of our results for macroscopic reconnection sites, and which of our results may be expected to hold in systems with higher magnetizations.

Kagan, Daniel; Milosavljevic, Milos [Department of Astronomy, University of Texas at Austin, Austin, TX 78712 (United States); Spitkovsky, Anatoly [Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States)

2013-09-01T23:59:59.000Z

379

Density of Gadolinium Nitrate Solutions for the High Flux Isotope Reactor  

SciTech Connect

In late 1992, the High Flux Isotope Reactor (HFIR) was planning to switch the solution contained in the poison injection tank from cadmium nitrate to gadolinium nitrate. The poison injection system is an emergency system used to shut down the reactor by adding a neutron poison to the cooling water. This system must be able to supply a minimum of 69 pounds of gadolinium to the reactor coolant system in order to guarantee that the reactor would become subcritical. A graph of the density of gadolinium nitrate solutions over a concentration range of 5 to 30 wt% and a temperature range of 15 to 40{sup o}C was prepared. Routine density measurements of the solution in the poison injection tank are made by HFIR personnel, and an adaptation of the original graph is used to determine the gadolinium nitrate concentration. In late 2008, HFIR personnel decided that the heat tracing that was present on the piping for the poison injection system could be removed without any danger of freezing the solution; however, the gadolinium nitrate solution might get as cold as 5{sup o}C. This was outside the range of the current density-concentration correlation, so the range needed to be expanded. This report supplies a new density-concentration correlation that covers the extended temperature range. The correlation is given in new units, which greatly simplifies the calculation that is required to determine the pounds of gadolinium in the tank solution. The procedure for calculating the amount of gadolinium in the HFIR poison injection system is as follows: (1) Calculate the usable volume in the system; (2) Measure the density of the solution; (3) Calculate the gadolinium concentration using the following equation: Gd(lb/ft{sup 3}) = measured density (g/mL) x 34.681 - 34.785; (4) Calculate the amount of gadolinium in the system using the following equation: Amount of Gd(lb) = Gd concentration (lb/ft{sup 3}) x usable volume (ft{sup 3}). The equation in step 3 is exact for a temperature of 5{sup o}C, and overestimates the gadolinium concentration at all higher temperatures. This guarantees that the calculation is conservative, in that the actual concentration will be at least as high as that calculated. If an additional safety factor is desired, it is recommended that an administrative control limit be set that is higher than the required minimum amount of gadolinium.

Taylor, Paul Allen [ORNL; Lee, Denise L [ORNL

2009-05-01T23:59:59.000Z

380

Nonlinear acceleration of a continuous finite element discretization of the self-adjoint angular flux form of the transport equation  

SciTech Connect

Nonlinear acceleration of a continuous finite element (CFE) discretization of the transport equation requires a modification of the transport solution in order to achieve local conservation, a condition used in nonlinear acceleration to define the stopping criterion. In this work we implement a coarse-mesh finite difference acceleration for a CFE discretization of the second-order self adjoint angular flux (SAAF) form of the transport equation and use a post processing to enforce local conservation. Numerical results are given for one-group source calculations of one-dimensional slabs. We also give a formal derivation of the boundary conditions for the SAAF. (authors)

Sanchez, R. [Commissariat a l'Energie Atomique et Aux Energies Alternatives, Service des Etudes des Reacteurs et de Mathematiques Appliquees, CEA DEN/DM2S/SERMA, 91191 Gif-sur-Yvettes Cedex (France); Rabiti, C.; Wang, Y. [Idaho National Laboratory, 2525 Fremont Avenue, Idaho Falls, ID 83415 (United States)

2012-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

China 2050 Pathways Calculator | Open Energy Information  

Open Energy Info (EERE)

China 2050 Pathways Calculator China 2050 Pathways Calculator Jump to: navigation, search Tool Summary LAUNCH TOOL Name: China 2050 Pathways Calculator Agency/Company /Organization: China's Energy Research Institute (ERI), UK Department of Energy and Climate Change (DECC), UK Foreign and Commonwealth Office (FCO) Focus Area: Non-renewable Energy, Renewable Energy Phase: Evaluate Options, Prepare a Plan Topics: Low-carbon plans/TNAs/NAMAs, Resource assessment, Pathways analysis Resource Type: Guide/manual, Training materials, Lessons learned/best practices, Online calculator User Interface: Website Website: china-en.2050calculator.net/pathways/111011011011101101011010111101101 Country: China OpenEI Keyword(s): International Eastern Asia Language: English References: Global Energy Governance Reform, 3 October 2012[1]

382

CUFR Tree Carbon Calculator | Open Energy Information  

Open Energy Info (EERE)

CUFR Tree Carbon Calculator CUFR Tree Carbon Calculator Jump to: navigation, search Tool Summary LAUNCH TOOL Name: CUFR Tree Carbon Calculator Agency/Company /Organization: United States Forest Service Sector: Climate, Land Focus Area: Forestry Phase: Determine Baseline, Evaluate Options Topics: GHG inventory, Resource assessment Resource Type: Software/modeling tools User Interface: Desktop Application Website: www.fs.fed.us/ccrc/topics/urban-forests/ctcc/ Cost: Free Language: English References: CUFR Tree Carbon Calculator[1] Overview "The CUFR Tree Carbon Calculator is the only tool approved by the Climate Action Reserve's Urban Forest Project Protocol for quantifying carbon dioxide sequestration from GHG tree planting projects. The CTCC is programmed in an Excel spreadsheet and provides carbon-related information

383

Campus Carbon Calculator | Open Energy Information  

Open Energy Info (EERE)

Campus Carbon Calculator Campus Carbon Calculator Jump to: navigation, search Tool Summary Name: Campus Carbon Calculator Agency/Company /Organization: Clean Air-Cool Planet Phase: Create a Vision, Determine Baseline, Develop Goals User Interface: Spreadsheet Website: www.cleanair-coolplanet.org/toolkit/inv-calculator.php The Campus Carbon Calculator(tm), Version 6.4, is now available for download. Version 6.4 includes new features, updates and corrections - including greatly expanded projection and solutions modules, designed to aid schools that have completed greenhouse gas inventories in developing long term, comprehensive climate action plans based on those inventories. The new modules facilitate analysis of carbon reduction options, determining project payback times, net present value, cost per ton reduced,

384

Unimolecular decomposition of methyltrichlorosilane: RRKM calculations  

SciTech Connect

Based on reaction thermochemistry and estimates of Arrhenius A-factors, it is expected that Si-C bond cleavage, C-H bond cleavage, and HCl elimination will be the primary channels for the unimolecular decomposition of methyltrichlorosilane. Using RRKM theory, we calculated rate constants for these three reactions. The calculations support the conclusion that these three reactions are the major decomposition pathways. Rate constants for each reaction were calculated in the high-pressure limit (800--1500 K) and in the falloff regime (1300--1500 K) for bath gases of both helium and hydrogen. These calculations thus provide branching fractions as well as decomposition rates. We also calculated bimolecular rate constants for the overall decomposition in the low-pressure limit. Interesting and surprising kinetic behavior of this system and the individual reactions is discussed. The reactivity of this chlorinated organosilane is compared to that of other organosilanes.

Osterheld, T.H.; Allendorf, M.D.; Melius, C.F.

1993-06-01T23:59:59.000Z

385

CRAD, Engineering- Oak Ridge National Laboratory High Flux Isotope Reactor  

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

A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Engineering Program in preparation for restart of the Oak Ridge National Laboratory High Flux Isotope Reactor.

386

Quantifying global marine isoprene fluxes using MODIS chlorophyll observations  

E-Print Network (OSTI)

, with considerable spatial and temporal variability, resulting in a global annual total of 0.1 Tg C/yr. Air vegetation [Guenther et al., 1995], with the tropics responsible for most of the global annual total ($500 TgQuantifying global marine isoprene fluxes using MODIS chlorophyll observations Paul I. Palmer

Palmer, Paul

387

Evaporation Minus Precipitation and Density Fluxes for the North Atlantic  

Science Journals Connector (OSTI)

Estimates of evaporation (E) over the North Atlantic Ocean by Bunker have been combined with estimates of precipitation (P) by Dorman and Bourke to produce new annual and seasonal maps of EP and surface density flux. Although uncertainties about ...

Raymond W. Schmitt; Philip S. Bogden; Clive E. Dorman

1989-09-01T23:59:59.000Z

388

High flux heat transfer in a target environment  

E-Print Network (OSTI)

High flux heat transfer in a target environment T. Davenne High Power Targets Group Rutherford Valid for: Consider turbulent heat transfer in a 1.5mm diameter pipe ­ Dittus Boelter correlation Achenbach correlation for heat transfer in a packed bed of spheres Max power density for a sphere

McDonald, Kirk

389

AirWater Momentum Flux Observations over Shoaling waves  

Science Journals Connector (OSTI)

This paper drab, with simultaneous momentum flux observations from four towers placed at different depths along a shore-normal line at the west end of Lake Ontario, Canada. The towers were at nominal depths of 12, 8, 4, and 2 m, in order to study ...

F. Anctil; M. A. Donelan

1996-07-01T23:59:59.000Z

390

Numerical Simulations of Solar Chromospheric Jets Associated with Emerging Flux  

Science Journals Connector (OSTI)

......present a schematic diagram summarizing the acceleration...and compressible MHD equations in Cartesian...emerging flux using a 2D MHD simulation. It is...present a schematic diagram summarizing the acceleration...Fig. 17 Schematic diagrams of the generation...region. This is an MHD effect that cannot......

Shinsuke Takasao; Hiroaki Isobe; Kazunari Shibata

2013-06-25T23:59:59.000Z

391

Fluctuations of energy flux in wave turbulence Eric Falcon,1  

E-Print Network (OSTI)

Fluctuations of energy flux in wave turbulence ´Eric Falcon,1 S´ebastien Auma^itre,2 Claudio Falc gravity and capillary wave turbulence in a statistically stationary regime displays fluctuations much interactions transfer kinetic energy toward small scales where viscous dissipation takes place

Falcon, Eric

392

Flux: Enhancing Photo Organization through Interaction and Automation  

E-Print Network (OSTI)

Flux: Enhancing Photo Organization through Interaction and Automation Dominikus Baur, Otmar for digital photo collections, we pro- vide methods for organizing and sharing photos in a convenient manner of scalabil- ity, which is especially relevant for a real-world sized photo collection is tackled

393

Self-field and magnetic-flux quantum mechanics  

E-Print Network (OSTI)

Self-field and quantized magnetic-flux are employed to generate the quantum numbers n, m, and l of atomic physics. Wave-particle duality is shown to be a natural outcome of having a particle and its self-field.

Paul Harris

2005-04-06T23:59:59.000Z

394

4, 28772914, 2007 Air-sea O2 flux  

E-Print Network (OSTI)

Variability in air-sea O2 and CO2 fluxes and its impact on atmospheric potential oxygen (APO 2 1 National Center for Atmospheric Research, Boulder, Colorado, USA 2 Dept. of Marine Chemistry-friendly Version Interactive Discussion EGU Abstract A three dimensional, time-evolving field of atmospheric

Paris-Sud XI, Université de

395

Solar Neutrino Fluxes Using The Exponential S-Factor  

SciTech Connect

Recently we propose an exponential form for the astrophysical S-factor. This form produces about 20% more solar 3He production through the 3He-3He reaction. In this note, we investigate the effects on the 7Be and 8B neutrino productions since the neutrino fluxes depend on the 3He abundance.

Kassim, Hasan Abu; Jalil, Ithnin Abdul; Yusof, Norhasliza [Department of Physics, University of Malaya, 50603 Kuala Lumpur (Malaysia)

2006-07-12T23:59:59.000Z

396

Photosymbiotic giant clams are transformers of solar flux  

Science Journals Connector (OSTI)

...spatially efficient system for solar energy. The highly evolved three-dimensional...materials and more spatially efficient solar production of algal biofuels...silicon wafer-based photovoltaic panels do not change with solar flux, so there is a less direct...

2014-01-01T23:59:59.000Z

397

Sediment permeability, distribution, and influence on fluxes in oceanic basement  

E-Print Network (OSTI)

6 Sediment permeability, distribution, and influence on fluxes in oceanic basement Glenn A. Spinelli, Emily R. Giambalvo, and Andrew T. Fisher 6.1 Introduction Sediments blanketing oceanic igneous basement rocks control the communication between fluid within the crust and the oceans. Seafloor sediments

Fisher, Andrew

398

Analytical model for flux saturation in sediment transport  

E-Print Network (OSTI)

The transport of sediment by a fluid along the surface is responsible for dune formation, dust entrainment and for a rich diversity of patterns on the bottom of oceans, rivers, and planetary surfaces. Most previous models of sediment transport have focused on the equilibrium (or saturated) particle flux. However, the morphodynamics of sediment landscapes emerging due to surface transport of sediment is controlled by situations out-of-equilibrium. In particular, it is controlled by the saturation length characterizing the distance it takes for the particle flux to reach a new equilibrium after a change in flow conditions. The saturation of mass density of particles entrained into transport and the relaxation of particle and fluid velocities constitute the main relevant relaxation mechanisms leading to saturation of the sediment flux. Here we present a theoretical model for sediment transport which, for the first time, accounts for both these relaxation mechanisms and for the different types of sediment entrainment prevailing under different environmental conditions. Our analytical treatment allows us to derive a closed expression for the saturation length of sediment flux, which is general and can thus be applied under different physical conditions.

T. Phtz; E. J. R. Parteli; J. F. Kok; H. J. Herrmann

2014-05-30T23:59:59.000Z

399

ENTROPY PRODUCTION AND RADIATION ENTROPY FLUX OF THE EARTH SYSTEM  

E-Print Network (OSTI)

the assumption of an isotropic gray-body Earth and isotropic reflecting TOA shortwave (SW) radiation. It is shown entropy flux can be improved by relaxing the commonly used Lambertian assumption. __________ NOTICE- 98CH10886 with the U.S. Department of Energy. The publisher by accepting the manuscript

400

CRAD, Management- Oak Ridge National Laboratory High Flux Isotope Reactor  

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

A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Management in preparation for restart of the Oak Ridge National Laboratory High Flux Isotope Reactor.

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

CRAD, Training- Oak Ridge National Laboratory High Flux Isotope Reactor  

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

A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February 2007 assessment of the Training Program in preparation for restart of the Oak Ridge National Laboratory High Flux Isotope Reactor.

402

Heat Conduction with Flux Condition on a Free Patch  

SciTech Connect

A new free boundary or free patch problem for the heat equation is presented. In the problem a nonlinear heat flux condition is prescribed on a free portion of the boundary, the patch, the position of which depends on the solution. The existence of a weak solution is established using the theory of set-valued pseudo monotone operators.

Kuttler, Kenneth L. [Department of Mathematics, Brigham Young University, Provo, UT 84602 (United States)], E-mail: klkuttler@math.byu.edu; Shillor, Meir [Department of Mathematics and Statistics, Oakland University, Rochester, MI 48309 (United States)], E-mail: shillor@oakland.edu

2004-08-15T23:59:59.000Z

403

Aircraft Measurements of the Concentration and Flux of Agrochemicals  

Science Journals Connector (OSTI)

Aircraft Measurements of the Concentration and Flux of Agrochemicals ... The use of agrochemicals, such as insecticides and herbicides, is of great environmental concern. ... To quantify and model the volatilization and deposition of these agrochemicals, measurements of the exchange rates between the atmosphere and different surfaces are required. ...

T. Zhu; R. L. Desjardins; J. I. MacPherson; E. Pattey; G. St. Amour

1998-03-07T23:59:59.000Z

404

Estimating terrestrial uranium and thorium by antineutrino flux measurements  

E-Print Network (OSTI)

of uranium and thorium concentrations in geological reservoirs relies largely on geochemi- cal modelEstimating terrestrial uranium and thorium by antineutrino flux measurements Stephen T. Dye, and approved November 16, 2007 (received for review July 11, 2007) Uranium and thorium within the Earth produce

Mcdonough, William F.

405

The role of trace gas flux networks in biogeosciences  

SciTech Connect

Vast networks of meteorological sensors ring the globe, providing continuous measurements of an array of atmospheric state variables such as temperature, humidity, rainfall, and the concentration of carbon dioxide [New etal., 1999; Tans etal., 1996]. These measurements provide input to weather and climate models and are key to detecting trends in climate, greenhouse gases, and air pollution. Yet to understand how and why these atmospheric state variables vary in time and space, biogeoscientists need to know where, when, and at what rates important gases are flowing between the land and the atmosphere. Tracking trace gas fluxes provides information on plant or microbial metabolism and climate-ecosystem interactions. The existence of trace gas flux networks is a relatively new phenomenon, dating back to research in 1984. The first gas flux measurement networks were regional in scope and were designed to track pollutant gases such as sulfur dioxide, ozone, nitric acid, and nitrogen dioxide. Atmospheric observations and model simulations were used to infer the depositional rates of these hazardous chemicals [Fowler etal., 2009; Meyers etal., 1991]. In the late 1990s, two additional trace gas flux measurement networks emerged. One, the United States Trace Gas Network (TRAGNET), was a short-lived effort that measured trace gas emissions from the soil and plants with chambers distributed throughout the country [Ojima etal., 2000]. The other, FLUXNET, was an international endeavor that brought many regional networks together to measure the fluxes of carbon dioxide, water vapor, and sensible heat exchange with the eddy covariance technique [Baldocchi etal., 2001]. FLUXNET, which remains active today, currently includes more than 400 tower sites, dispersed across most of the world's climatic zones and biomes, with sites in North and South America, Europe, Asia, Africa, and Australia. More recently, several specialized networks have emerged, including networks dedicated to urban areas (Urban Fluxnet), nitrogen compounds in Europe (NitroEurope), and methane (MethaneNet). Technical Aspects of Flux Networks Eddy covariance flux measurements are the preferred method by which biogeoscientists measure trace gas exchange between ecosystems and the atmosphere [Baldocchi, 2003].

Baldocch, Dennis [Department of Environmental Science, Policy and Management, University of California, Berkeley,; Reichstein, Markus [Max Planck Institute for Biogeochemistry; Papale, D. [University of Tuscia; KOTEEN, LAURIE [University of California, Berkeley; VARGAS, RODRIGO [Ensenada Center for Scientific Research and Higher Education (CICESE); Agarwal, D.A [Lawrence Berkeley National Laboratory (LBNL); Cook, Robert B [ORNL

2012-01-01T23:59:59.000Z

406

SHOCKS AND THERMAL CONDUCTION FRONTS IN RETRACTING RECONNECTED FLUX TUBES  

SciTech Connect

We present a model for plasma heating produced by time-dependent, spatially localized reconnection within a flare current sheet separating skewed magnetic fields. The reconnection creates flux tubes of new connectivity which subsequently retract at Alfvenic speeds from the reconnection site. Heating occurs in gas-dynamic shocks (GDSs) which develop inside these tubes. Here we present generalized thin flux tube equations for the dynamics of reconnected flux tubes, including pressure-driven parallel dynamics as well as temperature-dependent, anisotropic viscosity and thermal conductivity. The evolution of tubes embedded in a uniform, skewed magnetic field, following reconnection in a patch, is studied through numerical solutions of these equations, for solar coronal conditions. Even though viscosity and thermal conductivity are negligible in the quiet solar corona, the strong GDSs generated by compressing plasma inside reconnected flux tubes generate large velocity and temperature gradients along the tube, rendering the diffusive processes dominant. They determine the thickness of the shock that evolves up to a steady state value, although this condition may not be reached in the short times involved in a flare. For realistic solar coronal parameters, this steady state shock thickness might be as long as the entire flux tube. For strong shocks at low Prandtl numbers, typical of the solar corona, the GDS consists of an isothermal sub-shock where all the compression and cooling occur, preceded by a thermal front where the temperature increases and most of the heating occurs. We estimate the length of each of these sub-regions and the speed of their propagation.

Guidoni, S. E.; Longcope, D. W., E-mail: guidoni@physics.montana.ed [Department of Physics, Montana State University, Bozeman, MT 59717-3840 (United States)

2010-08-01T23:59:59.000Z

407

Calculations of neutron spectra after neutronneutron scattering  

Science Journals Connector (OSTI)

A direct neutronneutron scattering length, ann, measurement with the goal of 3% accuracy (0.5 fm) is under preparation at the aperiodic pulsed reactor YAGUAR. A direct measurement of ann will not only help resolve conflicting results of ann by indirect means, but also in comparison to the protonproton scattering length, app, shed light on the charge-symmetry of the nuclear force. We discuss in detail the analysis of the nn-scattering data in terms of a simple analytical expression. We also discuss calibration measurements using the time-of-flight spectra of neutrons scattered on He and Ar gases and the neutron activation technique. In particular, we calculate the neutron velocity and time-of-flight spectra after scattering neutrons on neutrons and after scattering neutrons on He and Ar atoms for the proposed experimental geometry, using a realistic neutron flux spectrumMaxwellian plus epithermal tail. The shape of the neutron spectrum after scattering is appreciably different from the initial spectrum, due to collisions between thermalthermal and thermalepithermal neutrons. At the same time, the integral over the Maxwellian part of the realistic scattering spectrum differs by only about 6 per cent from that of a pure Maxwellian nn-scattering spectrum.

B E Crawford; S L Stephenson; C R Howell; G E Mitchell; W Tornow; W I Furman; E V Lychagin; A Yu Muzichka; G V Nekhaev; A V Strelkov; E I Sharapov; V N Shvetsov

2004-01-01T23:59:59.000Z

408

Foodborne Illness Cost Calculator | Data.gov  

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

Foodborne Illness Cost Calculator Foodborne Illness Cost Calculator Agriculture Community Menu DATA APPS EVENTS DEVELOPER STATISTICS COLLABORATE ABOUT Agriculture You are here Data.gov » Communities » Agriculture » Data Foodborne Illness Cost Calculator Dataset Summary Description The calculator provides information on the assumptions behind foodborne illness cost estimates and gives you a chance to make your own assumptions and calculate your own cost estimates. This interactive web-based tool allows users to estimate the cost of illness due to specific foodborne pathogens. The updated ERS cost estimate for Shiga-toxin producing E. coli O157 (STEC O157) was added to the Calculator in spring, 2008. Calculator users can now review and change the assumptions behind the ERS cost estimates for either STEC O157 or Salmonella. The assumptions that can be modified include the annual number of cases, the distribution of cases by severity, the use or costs of medical care, the amount or value of time lost from work, the costs of premature death, and the disutility costs for nonfatal cases. Users can also update the cost estimate for inflation for any year from 1997 to 2007.

409

Long-Term Carbon Dioxide Fluxes from a Very Tall Tower in a Northern Forest: Flux Measurement Methodology  

Science Journals Connector (OSTI)

Methodology for determining fluxes of CO2 and H2O vapor with the eddy-covariance method using data from instruments on a 447-m tower in the forest of northern Wisconsin is addressed. The primary goal of this study is the validation of the methods ...

Bradford W. Berger; Kenneth J. Davis; Chuixiang Yi; Peter S. Bakwin; Cong Long Zhao

2001-04-01T23:59:59.000Z

410

IAEA sodium void reactivity benchmark calculations  

SciTech Connect

In this paper, the IAEA-1 992 ``Benchmark Calculation of Sodium Void Reactivity Effect in Fast Reactor Core`` problem is evaluated. The proposed design is a large axially heterogeneous oxide-fueled fast reactor as described in Section 2; the core utilizes a sodium plenum above the core to enhance leakage effects. The calculation methods used in this benchmark evaluation are described in Section 3. In Section 4, the calculated core performance results for the benchmark reactor model are presented; and in Section 5, the influence of steel and interstitial sodium heterogeneity effects is estimated.

Hill, R.N.; Finck, P.J.

1992-12-01T23:59:59.000Z

411

IAEA sodium void reactivity benchmark calculations  

SciTech Connect

In this paper, the IAEA-1 992 Benchmark Calculation of Sodium Void Reactivity Effect in Fast Reactor Core'' problem is evaluated. The proposed design is a large axially heterogeneous oxide-fueled fast reactor as described in Section 2; the core utilizes a sodium plenum above the core to enhance leakage effects. The calculation methods used in this benchmark evaluation are described in Section 3. In Section 4, the calculated core performance results for the benchmark reactor model are presented; and in Section 5, the influence of steel and interstitial sodium heterogeneity effects is estimated.

Hill, R.N.; Finck, P.J.

1992-01-01T23:59:59.000Z

412

Line-driven winds, ionizing fluxes and UV-spectra of hot stars at extremely low metallicity. I. Very massive O-stars  

E-Print Network (OSTI)

Wind models of very massive stars with metallicities in a range from 1E-4 to 1.0 solar are calculated using a new treatment of radiation driven winds with depth dependent radiative force multipliers and a comprehensive list of more than two million spectral lines in NLTE. The models are tested by a comparison with observed stellar wind properties of O stars in the Galaxy and the SMC. Satisfying agreement is found. The calculations yield mass-loss rates, wind velocities, wind momenta and wind energies as a function of metallicity and can be used to discuss the influence of stellar winds on the evolution of very massive stars in the early universe and on the interstellar medium in the early phases of galaxy formation. The normal scaling laws, which predict stellar mass-loss rates and wind momenta to decrease as a power law with metal abundance break down at a certain threshold. Analytical fit formulae for mass-loss rates are provided as a function of stellar parameters and metallicity. The new wind models are applied to calculate ionizing fluxes and observable spectra of very massive stars as a function of metallicity using the new hydrodynamic, non-LTE line-blanketed flux constant model atmosphere code developed by Pauldrach et al. Numbers of ionizing photons for the crucial ionization stages are given. For a fixed effective temperature the He II ionizing emergent flux depends very strongly on metallicity but also on stellar luminosity. A strong dependence on metallicity is also found for the C III, Ne II and O II ionizing photons, whereas the H I and He I ionizing flux is almost independent of metallicity. We also calculate UV spectra for all the models and discuss the behaviour of significant line features as a function of metallicity.

Rolf P. Kudritzki

2002-05-14T23:59:59.000Z

413

INDIRECT COST CALCULATION [IN REVERSE] YOU WANT TO CALCULATE THE DIRECT COSTS  

E-Print Network (OSTI)

INDIRECT COST CALCULATION [IN REVERSE] YOU WANT TO CALCULATE THE DIRECT COSTS YOU KNOW WHAT THE TUITION, STIPEND AND EQUIPMENT COSTS ARE YOU KNOW WHAT THE TOTAL COST IS CALCULATION IS USING THE 2010 FED F&A RATE FOR WSU OF 52% (.52) [ DIRECT COST ­ TUITION ­ STIPEND ­ EQUIPMENT] (.52 ) + DIRECT

Finley Jr., Russell L.

414

Auxiliary basis expansions for large-scale electronic structure calculations  

E-Print Network (OSTI)

large-scale electronic structure calculations. Yousung Jungcost of electronic structure calculations is to employIntroduction. Electronic structure calculations are normally

Jung, Yousung; Sodt, Alexander; Gill, Peter W.M.; Head-Gordon, Martin

2005-01-01T23:59:59.000Z

415

Urban Transportation Emission Calculator | Open Energy Information  

Open Energy Info (EERE)

Urban Transportation Emission Calculator Urban Transportation Emission Calculator Jump to: navigation, search Tool Summary Name: Urban Transportation Emission Calculator Agency/Company /Organization: Transport Canada Sector: Energy Focus Area: Transportation Topics: GHG inventory Resource Type: Software/modeling tools User Interface: Website Website: wwwapps.tc.gc.ca/Prog/2/UTEC-CETU/Menu.aspx?lang=eng Cost: Free References: http://wwwapps.tc.gc.ca/Prog/2/UTEC-CETU/Menu.aspx?lang=eng The Urban Transportation Emissions Calculator (UTEC) is a user-friendly tool for estimating annual emissions from personal, commercial, and public transit vehicles. It estimates greenhouse gas (GHG) and criteria air contaminant (CAC) emissions from the operation of vehicles. It also estimates upstream GHG emissions from the production, refining and

416

Extensions To Standard Hold Time Calculations  

Science Journals Connector (OSTI)

The paper extends existing methods of calculating the hold time for a fire extinguishing gas in an enclosure to cover mechanical HVAC systems and wide descending interfaces, and compares ... the sharp descending ...

J. Dewsbury; R. A. Whiteley

2000-11-01T23:59:59.000Z

417

Essential Value, Pmax, and Omax Automated Calculator  

E-Print Network (OSTI)

Behavioral economic measures of demand are often calculated in sophisticated spreadsheet programs. Unfortunately, no closed form models for exact pmax (point of unit elasticity) and omax (response output at pmax) can be applied to initial regression...

Kaplan, Brent A.; Reed, Derek D.

2014-08-21T23:59:59.000Z

418

Energy-level calculation through perturbation theory  

Science Journals Connector (OSTI)

A method for analytical calculation of energy levels using perturbation theory is developed. Convergence of the perturbation theory directly follows from the method itself. An example of this method is given for the anharmonic oscillator.

Biswanath Rath

1990-09-01T23:59:59.000Z

419

Medical physics calculations with MCNP: a primer  

E-Print Network (OSTI)

of Medical Internal Radiation Dose (MIRD) specific absorbed fraction (SAF) values using the ORNL MIRD phantom, x-ray phototherapy effectiveness, prostate brachytherapy lifetime dose calculations, and a radiograph of the head using the Zubal head phantom. Also...

Lazarine, Alexis D

2006-10-30T23:59:59.000Z

420

Modern methods of electronic structure calculations  

Science Journals Connector (OSTI)

In this Chapter we shall consider methods that are currently widely used for calculating the electronic structure of solids. Essentially, there are two groups of methods. The methods of the first group are bui...

Lev Kantorovich

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

What is the GREET Fleet Footprint Calculator  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

GREET Fleet Calculator can estimate petroleum and carbon GREET Fleet Calculator can estimate petroleum and carbon footprints of both on-road vehicles and off-road equipment. What is the GREET Fleet Footprint Calculator? As early adopters of new vehicle technologies, fleets are vital to the success of alternative fuels and advanced vehicles (AFVs). The Greenhouse gases, Regulated Emis- sions, and Energy use in Transportation (GREET) Fleet Foot- print Calculator can help fleets decide on the AFVs that will best help them meet a variety of organizational goals and legal requirements, including reducing their petroleum use and greenhouse gas (GHG) emissions. Currently, the United States imports nearly half of its oil. 1 Because the United States uses about 70% of its oil for transportation, decreasing petroleum consumption in vehicles can substantially

422

Solving three-body-breakup problems with outgoing-flux asymptotic conditions  

SciTech Connect

An analytically solvable three-body collision system (s wave) model is used to test two different theoretical methods. The first one is a configuration interaction expansion of the scattering wave function using a basis set of Generalized Sturmian Functions (GSF) with purely outgoing flux (CISF), introduced recently in A. L. Frapicinni, J. M. Randazzo, G. Gasaneo, and F. D. Colavecchia [J. Phys. B: At. Mol. Opt. Phys. 43, 101001 (2010)]. The second one is a finite element method (FEM) calculation performed with a commercial code. Both methods are employed to analyze different ways of modeling the asymptotic behavior of the wave function in finite computational domains. The asymptotes can be simulated very accurately by choosing hyperspherical or rectangular contours with the FEM software. In contrast, the CISF method can be defined both in an infinite domain or within a confined region in space. We found that the hyperspherical (rectangular) FEM calculation and the infinite domain (confined) CISF evaluation are equivalent. Finally, we apply these models to the Temkin-Poet approach of hydrogen ionization.

Randazzo, J. M.; Frapiccini, A. L.; Colavecchia, F. D. [Division Colisiones Atomicas, Centro Atomico Bariloche and CONICET, 8400 San Carlos de Bariloche, Rio Negro (Argentina); Buezas, F.; Gasaneo, G. [Departamento de Fisica, Universidad Nacional del Sur and CONICET, 8000 Bahia Blanca, Buenos Aires (Argentina)

2011-11-15T23:59:59.000Z

423

Design Study for a Low-Enriched Uranium Core for the High Flux Isotope Reactor, Annual Report for FY 2008  

SciTech Connect

This report documents progress made during FY 2008 in studies of converting the High Flux Isotope Reactor (HFIR) from highly enriched uranium (HEU) fuel to low-enriched uranium (LEU) fuel. Conversion from HEU to LEU will require a change in fuel form from uranium oxide to a uranium-molybdenum alloy. With axial and radial grading of the fuel foil and an increase in reactor power to 100 MW, calculations indicate that the HFIR can be operated with LEU fuel with no degradation in reactor performance from the current level. Results of selected benchmark studies imply that calculations of LEU performance are accurate. Scoping experiments with various manufacturing methods for forming the LEU alloy profile are presented.

Primm, Trent [ORNL; Chandler, David [ORNL; Ilas, Germina [ORNL; Miller, James Henry [ORNL; Sease, John D [ORNL; Jolly, Brian C [ORNL

2009-03-01T23:59:59.000Z

424

Hartree-Fock calculations of nuclear masses  

E-Print Network (OSTI)

Hartree-Fock calculations pertaining to the determination of nuclear binding energies throughout the whole chart of nuclides are reviewed. Such an approach is compared with other methods. Main techniques in use are shortly presented. Advantages and drawbacks of these calculations are also discussed with a special emphasis on the extrapolation towards nuclei far from the stability valley. Finally, a discussion of some selected results from light to superheavy nuclei, is given.

Quentin, P

1976-01-01T23:59:59.000Z

425

Use of computers for multicomponent distillation calculations  

E-Print Network (OSTI)

LIBRARY 4 A I4 COLLEGE QF TEXAS USE OF COMPUTERS FOB MULTICOMPONENT DISTILLATION CALCULATIONS A Thesis By Samuel Lane Sullivan Jr, Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE January 1959 Major Subject: Chemical Engineering USE OF COMPUTERS FOR NULTICOMPONENT DISTILLATION CALCULATIONS A Thesis By Samuel Lane Sullivan Jr. Approved as to style and content by: Chairman...

Sullivan, Samuel Lane

2012-06-07T23:59:59.000Z

426

Universal basis sets for electronic structure calculations  

Science Journals Connector (OSTI)

The concept of a universal basis set for electronic structure calculations is explored by presenting energy results obtained when basis sets are transferred from one atom to another. The calculations are performed using the diagrammatic techniques of many?body perturbation theory. A single universal basis set is shown to give uniformly accurate descriptions of the matrix HartreeFock and correlation energies of the He Be and Ne atoms.

David M. Silver; Stephen Wilson

1978-01-01T23:59:59.000Z

427

Calculator programs for pipe stress engineering  

SciTech Connect

This book contains a collection of programs for solving a wide variety of stress problems using both the TI-59 and HP-41CV calculators. Each program is prefaced with a description of the problem to be solved, nomenclature, code restrictions and program limitations. Solutions are explained analytically and then followed by the complete program listing, documentation and checklists. Topics include calculations for pipewall thickness, pressure vessel analysis, reinforcement pads, allowable span, vibration, stress, and two-anchor piping systems.

Morgan, K.S.

1985-01-01T23:59:59.000Z

428

Calculator program speeds rod pump design  

SciTech Connect

Matching sucker rod pump characteristics to a specific application is greatly simplified with this program, intended for use with an HP-41CV hand-held computer. The user inputs application data and the program calculates all necessary design criteria, including Mill's acceleration factor, peak and minimum polish rod loads and horsepower required. Sample calculations are provided, together with a thorough discussion of special design considerations involved in huff-and-puff applications.

Engineer, R.; Davis, C.L.

1984-02-01T23:59:59.000Z

429

Calculating the Habitable Zones of Multiple Star Systems with a New Interactive Web Site  

Science Journals Connector (OSTI)

We have developed a comprehensive methodology and an interactive Web site for calculating the habitable zone (HZ) of multiple star systems. Using the concept of spectral weight factor, as introduced in our previous studies of the calculations of HZ in and around binary star systems, we calculate the contribution of each star (based on its spectral energy distribution) to the total flux received at the top of the atmosphere of an Earth-like planet, and use the models of the HZ of the Sun to determine the boundaries of the HZ in multiple star systems. Our interactive Web site for carrying out these calculations is publicly available at http://astro.twam.info/hz. We discuss the details of our methodology and present its application to some of the multiple star systems detected by the Kepler space telescope. We also present the instructions for using our interactive Web site, and demonstrate its capabilities by calculating the HZ for two interesting analytical solutions of the three-body problem.

Tobias W. A. Mller; Nader Haghighipour

2014-01-01T23:59:59.000Z

430

Multigroup neutron dose calculations for proton therapy  

SciTech Connect

We have developed tools for the preparation of coupled multigroup proton/neutron cross section libraries. Our method is to use NJOY to process evaluated nuclear data files for incident particles below 150 MeV and MCNPX to produce data for higher energies. We modified the XSEX3 program of the MCNPX code system to produce Legendre expansions of scattering matrices generated by sampling the physics models that are comparable to the output of the GROUPR routine of NJOY. Our code combines the low and high energy scattering data with user input stopping powers and energy deposition cross sections that we also calculated using MCNPX. Our code also calculates momentum transfer coefficients for the library and optionally applies an energy straggling model to the scattering cross sections and stopping powers. The motivation was initially for deterministic solution of space radiation shielding calculations using Attila, but noting that proton therapy treatment planning may neglect secondary neutron dose assessments because of difficulty and expense, we have also investigated the feasibility of multi group methods for this application. We have shown that multigroup MCNPX solutions for secondary neutron dose compare well with continuous energy solutions and are obtainable with less than half computational cost. This efficiency comparison neglects the cost of preparing the library data, but this becomes negligible when distributed over many multi group calculations. Our deterministic calculations illustrate recognized obstacles that may have to be overcome before discrete ordinates methods can be efficient alternatives for proton therapy neutron dose calculations.

Kelsey Iv, Charles T [Los Alamos National Laboratory; Prinja, Anil K [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

431

A demonstration of variance and covariance calculations using MAVARIC (Materials Accounting VARIance Calculator) and PROFF (PROcessing and Fuel Facilities calculator)  

SciTech Connect

Good decision-making in materials accounting requires a valid calculation of control limits and detection sensitivity for facilities handling special nuclear materials (SNM). A difficult aspect of this calculation is determining the appropriate variance and covariance values for the terms in the materials balance (MB) equation. Computer software such as MAVARIC (Materials Accounting VARIance Calculator) and PROFF (PROcessing and Fuel Facilities calculator) can efficiently select and combine variance terms. These programs determine the variance and covariance of an MB equation by first obtaining relations for the variance and covariance of each term in the MB equation through propagating instrument errors and then substituting the measured quantities and their uncertainties into these relations. MAVARIC is a custom spreadsheet used with the second release of LOTUS 1-2-3.** PROFF is a stand-alone menu-driven program requiring no commercial software. Programs such as MAVARIC and PROFF facilitate the complex calculations required to determine the detection sensitivity of an SNM facility. These programs can also be used to analyze materials accounting systems.

Barlich, G.L.; Nasseri, S.S.

1990-01-01T23:59:59.000Z

432

Investigation of edge neutral flux on the ISX-B tokamak using a low-energy charge-exchange analyzer  

SciTech Connect

To study the emission of D/sup 0/ from the periphery of a tokamak plasma, a low-energy neutral particle spectrometer optimized for (16 < E < 500 eV) has been built and employed on the Impurity Study Experiment (ISX-B) tokamak. The diagnostic utilizes a cesium vapor cell to form negative ions from the incident D/sup 0/ neutrals and a four-channel electrostatic analyzer to energy analyze the negative ions. The spectrometer was absolutely calibrated using D/sup 0/ beams formed by electron capture by positive ions in a gas cell and by photo-detachment of negative ions by a yttrium-aluminum-garnet laser. For the observation region chosen on ISX-B (120/sup 0/ toroidally away from the limiter, near the gas puff), the neutral particle flux has a two-component nature. These data are well fit by two separate exponential distributions of equivalent temperatures 6 to 8 eV for particle energies below about 80 eV and 70 to 80 eV for particle energies above 80 eV. For ohmically heated discharges, the measured particle flux in the energy range 25 to 700 eV is approx. 2.5 x 10/sup 15/ cm/sup -2/.s/sup -1/; the mean particle energy is approx. 70 eV, and the calculated flux at the wall is approx. 30 mW/cm/sup 2/. The major effect of neutral beam heating is to increase the particle flux in the 25- to 700-eV range by a factor of 3.

Thomas, D. M.

1983-08-01T23:59:59.000Z

433

Posters Surface Flux Intercomparison Between the MM5 Model  

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

Posters Surface Flux Intercomparison Between the MM5 Model and Observations During the Storm-Scale Observations Regional Measurement Program-Fronts Experiment Systems Test 1992 J. Dudhia and S. P. Oncley Mesoscale and Microscale Meteorology Division Atmospheric Technology Division National Center for Atmospheric Research Boulder, Colorado Introduction Mesoscale model 5 (MM5) is being used as a data assimilation tool for the Atmospheric Radiation Measurement (ARM) Program. There is a need to verify that the model physics is consistent with observations under a range of conditions. Surface fluxes of heat, moisture, and momentum are a particular area of uncertainty in the model owing to their dependence on surface properties, some of which are time-dependent. The National Center for Atmospheric Research (NCAR)

434

FLUXCAP: A flux-coupled ac/dc magnetizing device  

E-Print Network (OSTI)

We report on an instrument for applying ac and dc magnetic fields by capturing the flux from a rotating permanent magnet and projecting it between two adjustable pole pieces. This can be an alternative to standard electromagnets for experiments with small samples or in probe stations in which an applied magnetic field is needed locally, with advantages that include a compact form-factor, very low power requirements and dissipation as well as fast field sweep rates. This flux capture instrument (FLUXCAP) can produce fields from -400 to +400 mT, with field resolution less than 1 mT. It generates static magnetic fields as well as ramped fields, with ramping rates as high as 10 T/s. We demonstrate the use of this apparatus for studying the magnetotransport properties of spin-valve nanopillars, a nanoscale device that exhibits giant magnetoresistance.

Gopman, Daniel B; Kent, Andrew D

2012-01-01T23:59:59.000Z

435

Dynamical constraints from field line topology in magnetic flux tubes  

E-Print Network (OSTI)

A topological constraint on the dynamics of a magnetic field in a flux tube arises from the fixed point indices of its field line mapping. This can explain unexpected behaviour in recent resistive-magnetohydrodynamic simulations of magnetic relaxation. Here we present the theory for a general periodic flux tube, representing, for example, a toroidal confinement device or a solar coronal loop. We show how an ideal dynamics on the side boundary of the tube implies that the sum of indices over all interior fixed points is invariant. This constraint applies to any continuous evolution inside the tube, which may be turbulent and/or dissipative. We also consider the analogous invariants obtained from periodic points (fixed points of the iterated mapping). Although there is a countably infinite family of invariants, we show that they lead to at most two independent dynamical constraints. The second constraint applies only in certain magnetic configurations. Several examples illustrate the theory.

A. R. Yeates; G. Hornig

2011-03-11T23:59:59.000Z

436

Nonlinear diffusion theory model for xenon-induced flux oscillations  

SciTech Connect

A nonlinear model is developed for the xenon induced flux oscillation problem that occurs in nuclear power plants. The model is based on Galerkins's method of weighted residuals applied to multigroup diffusion theory. A similar linear model is developed by the same methods in order to consider the effects of the nonlinearities of the system. The effects of multi- and single-energy group considerations are also examined. Finally the effects of various number of basis functions used to approximate the flux, iodine, and xenon concentrations is determined. A partial listing of the computer program XORA, developed from the nonlinear and linear models, is given along with representative input and output from this program.

Teachman, J.D.

1981-01-01T23:59:59.000Z

437

Vorticity Preserving Flux Corrected Transport Scheme for the Acoustic Equations  

SciTech Connect

Long term research goals are to develop an improved cell-centered Lagrangian Hydro algorithm with the following qualities: 1. Utilizes Flux Corrected Transport (FCT) to achieve second order accuracy with multidimensional physics; 2. Does not rely on the one-dimensional Riemann problem; and 3. Implements a form of vorticity control. Short term research goals are to devise and implement a 2D vorticity preserving FCT solver for the acoustic equations on an Eulerian mesh: 1. Develop a flux limiting mechanism for systems of governing equations with symmetric wave speeds; 2. Verify the vorticity preserving properties of the scheme; and 3. Compare the performance of the scheme to traditional MUSCL-Hancock and other algorithms.

Lung, Tyler B. [Los Alamos National Laboratory; Roe, Phil [University of Michigan; Morgan, Nathaniel R. [Los Alamos National Laboratory

2012-08-15T23:59:59.000Z

438

FLUX ROPE FORMATION PRECEDING CORONAL MASS EJECTION ONSET  

SciTech Connect

We analyze the evolution of a sigmoidal (S-shaped) active region toward eruption, which includes a coronal mass ejection (CME) but leaves part of the filament in place. The X-ray sigmoid is found to trace out three different magnetic topologies in succession: a highly sheared arcade of coronal loops in its long-lived phase, a bald-patch separatrix surface (BPSS) in the hours before the CME, and the first flare loops in its major transient intensity enhancement. The coronal evolution is driven by photospheric changes which involve the convergence and cancellation of flux elements under the sigmoid and filament. The data yield unambiguous evidence for the existence of a BPSS, and hence a flux rope, in the corona prior to the onset of the CME.

Green, L. M.; Kliem, B. [University College London, Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, Surrey RH5 6NT (United Kingdom)], E-mail: lmg@mssl.ucl.ac.uk, E-mail: bhk@mssl.ucl.ac.uk

2009-08-01T23:59:59.000Z

439

THE PHOTOSPHERIC ENERGY AND HELICITY BUDGETS OF THE FLUX-INJECTION HYPOTHESIS  

SciTech Connect

The flux-injection hypothesis for driving coronal mass ejections (CMEs) requires the transport of substantial magnetic energy and helicity flux through the photosphere concomitant with the eruption. Under the magnetohydrodynamics approximation, these fluxes are produced by twisting magnetic field and/or flux emergence in the photosphere. A CME trajectory, observed 2000 September 12 and fitted with a flux-rope model, constrains energy and helicity budgets for testing the flux-injection hypothesis. Optimal velocity profiles for several driving scenarios are estimated by minimizing the photospheric plasma velocities for a cylindrically symmetric flux-rope magnetic field subject to the flux budgets required by the flux-rope model. Ideal flux injection, involving only flux emergence, requires hypersonic upflows in excess of the solar escape velocity 617 km s{sup -1} over an area of 6 x 10{sup 8} km{sup 2} to satisfy the energy and helicity budgets of the flux-rope model. These estimates are compared with magnetic field and Doppler measurements from Solar and Heliospheric Observatory/Michelson Doppler Imager on 2000 September 12 at the footpoints of the CME. The observed Doppler signatures are insufficient to account for the required energy and helicity budgets of the flux-injection hypothesis.

Schuck, P. W., E-mail: peter.schuck@nasa.go [NASA Goddard Space Flight Center, Room 250, Building 21 Space Weather Laboratory, Code 674, Heliophysics Science Division, 8801 Greenbelt Rd., Greenbelt, MD 20771 (United States)

2010-05-01T23:59:59.000Z

440

Annual grassland resource pools and fluxes: sensitivity to precipitation  

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

Annual grassland resource pools and fluxes: sensitivity to precipitation Annual grassland resource pools and fluxes: sensitivity to precipitation and dry periods on two contrasting soils Title Annual grassland resource pools and fluxes: sensitivity to precipitation and dry periods on two contrasting soils Publication Type Journal Article Year of Publication 2012 Authors Sudderth, Erika A., Samuel B. St. Clair, Sarah A. Placella, Stéphanie M. Swarbreck, Cristina Castanha, Donald J. Herman, Marc L. Fischer, Markus Kleber, Erik B. Sudderth, Margaret S. Torn, Mary K. Firestone, Gary L. Andersen, and David D. Ackerly Journal Ecosphere Volume 3 Issue 8 Keywords Avena barbata, Bayesian ANOVA, carbon, climate change, dry periods, Grassland, nitrogen, phenology, precipitation, soil type, water Abstract In ecosystems throughout the world climate models project increased variability in precipitation patterns that may strongly affect the above- and below-ground processes that control carbon, water, and nutrient cycles. Uncertainty about how plant and soil processes respond to wet and dry periods at different times in the growing season is a barrier to understanding how changing rainfall patterns will affect ecosystem function in annual grasslands. We used mesocosm systems to test the sensitivity to mid- and late-season dry periods of twenty response variables related to nitrogen, carbon, and water cycling in Avena barbata monocultures. We compared the responses of individual variables and of grassland systems under low and high cumulative rain treatments and between two contrasting soil types.

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

Operation of the ORNL High Particle Flux Helicon Plasma Source  

SciTech Connect

A high power, high particle flux rf-based helicon plasma source has been constructed at ORNL and operated at power levels up to 30 kW. High-density hydrogen and helium plasmas have been produced. The source has been designed as the basis for a linear plasma materials interaction (PMI) test facility that will generate particle fluxes {Gamma}{sub p}10{sup 23} m{sup -3} s{sup -1}, and utilize additional ion and electron cyclotron heating to produce high parallel (to the magnetic field) heat fluxes of {approx}10 MW/m{sup 2}. An rf-based source for PMI research is of interest because high plasma densities are generated with no internal electrodes, allowing true steady state operation with minimal impurity generation. The ORNL helicon source has a diameter of 15 cm and to-date has operated at a frequency f = 13.56 MHz, with magnetic field strength |B| in the antenna region up to {approx}0.15 T. Maximum densities of 3x10{sup 19} m{sup -3} in He and 2.5x10{sup 19} m{sup -3} in H have been achieved. Radial density profiles have been seen to be dependent on the axial |B| profile.

Goulding, R. H.; Biewer, T. M.; Caughman, J. B. O.; Chen, G. C.; Owen, L. W.; Sparks, D. O. [Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6169 (United States)

2011-12-23T23:59:59.000Z

442

Operation of the ORNL High Particle Flux Helicon Plasma Source  

SciTech Connect

A high power, high particle flux rf-based helicon plasma source has been constructed at ORNL and operated at power levels up to 30 kW. High-density hydrogen and helium plasmas have been produced. The source has been designed as the basis for a linear plasma materials interaction (PMI) test facility that will generate particle fluxes Gamma(p) > 10(23) M-3 s(-1), and utilize additional ion and electron cyclotron heating to produce high parallel (to the magnetic field) heat fluxes of similar to 10 MW/m(2). An rf-based source for PMI research is of interest because high plasma densities are generated with no internal electrodes, allowing true steady state operation with minimal impurity generation. The ORNL helicon source has a diameter of 15 cm and to-date has operated at a frequency f = 13.56 MHz, with magnetic field strength vertical bar B vertical bar in the antenna region up to similar to 0.15 T. Maximum densities of 3 x 10(19) M-3 in He and 2.5 x 10(19) m(-3) in H have been achieved. Radial density profiles have been seen to be dependent on the axial vertical bar B vertical bar profile.

Goulding, Richard Howell [ORNL; Biewer, Theodore M [ORNL; Caughman, John B [ORNL; Chen, Guangye [ORNL; Owen, Larry W [ORNL; Sparks, Dennis O [ORNL

2011-01-01T23:59:59.000Z

443

THREE-DIMENSIONAL RECONNECTION INVOLVING MAGNETIC FLUX ROPES  

SciTech Connect

Two and three magnetic flux ropes are created and studied in a well-diagnosed laboratory experiment. The twisted helical bundles of field lines rotate and collide with each other over time. In the two rope case, reverse current layers indicative of reconnection are observed. Using a high spatial and temporal resolution three-dimensional volume data set in both cases, quasi-separatrix layers (QSLs) are identified in the magnetic field. Originally developed in the context of solar magnetic reconnection, QSLs are thought to be preferred sites for reconnection. This is verified in these studies. In the case of three flux ropes there are multiple QSLs, which come and go in time. The divergence of the field lines within the QSLs and the field line motion is presented. In all cases, it is observed that the reconnection is patchy in space and bursty in time. Although it occurs at localized positions it is the result of the nonlocal behavior of the flux ropes.

Gekelman, W.; Van Compernolle, B. [Department of Physics and Astronomy, University of California, Los Angeles, CA 90095 (United States); Lawrence, E. [Princeton Plasma Physics Laboratory, Princeton, NJ (United States)

2012-07-10T23:59:59.000Z

444

Antiproton Flux in Cosmic Ray Propagation Models with Anisotropic Diffusion  

E-Print Network (OSTI)

Recently a cosmic ray propagation model has been introduced, where anisotropic diffusion is used as a mechanism to allow for $\\mathcal{O}(100)$ km/s galactic winds. This model predicts a reduced antiproton background flux, suggesting an excess is being observed. We implement this model in GALPROP v50.1 and perform a $\\chi^2$ analysis for B/C, $^{10}$Be/$^{9}$Be, and the recent PAMELA $\\bar{p}/p$ datasets. By introducing a power-index parameter $\\alpha$ that dictates the dependence of the diffusion coefficient $D_{xx}$ on height $|z|$ away from the galactic plane, we confirm that isotropic diffusion models with $\\alpha=0$ cannot accommodate high velocity convective winds suggested by ROSAT, while models with $\\alpha=1$ ($D_{xx}\\propto |z|$) can give a very good fit. A fit to B/C and $^{10}$Be/$^{9}$Be data predicts a lower $\\bar{p}/p$ flux ratio than the PAMELA measurement at energies between approximately 2 GeV to 20 GeV. A combined fit including in addition the $\\bar{p}/p$ data is marginal, suggesting only a partial contribution to the measured antiproton flux.

Phillip Grajek; Kaoru Hagiwara

2010-12-02T23:59:59.000Z

445

Imaging of Diesel Particulate Filters using a High-Flux Neutron...  

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

Imaging of Diesel Particulate Filters using a High-Flux Neutron Source Imaging of Diesel Particulate Filters using a High-Flux Neutron Source Detailed images of deposits identified...

446

Disorder-Driven Roughening Transition of Flux Lines in a Periodic Potential  

Science Journals Connector (OSTI)

In flux line systems, the competition between pinning by point disorder and attraction to a periodic potential is studied using exact ground state computations. For sufficiently small point disorder the flux l...

T. Knetter; G. Schrder; H. Rieger

2001-01-01T23:59:59.000Z

447

E-Print Network 3.0 - average solar-cosmic-ray fluxes Sample...  

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

solar-cosmic-ray fluxes Search Powered by Explorit Topic List Advanced Search Sample search results for: average solar-cosmic-ray fluxes Page: << < 1 2 3 4 5 > >> 1 Annales...

448

E-Print Network 3.0 - argonne high flux reactor Sample Search...  

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

for: argonne high flux reactor Page: << < 1 2 3 4 5 > >> 1 Thirteenth National School on Neutron and X-ray Scattering Summary: Neutron Source and High Flux Isotope Reactor...

449

Measurement of Surface Energy Fluxes from Two Rangeland Sites and Comparison with a Multilayer Canopy Model  

Science Journals Connector (OSTI)

Rangelands are often characterized by a patchy mosaic of vegetation types, making measurement and modeling of surface energy fluxes particularly challenging. The purpose of this study was to evaluate surface energy fluxes measured using three eddy ...

Gerald N. Flerchinger; Michele L. Reba; Danny Marks

2012-06-01T23:59:59.000Z

450

Estimation of turbulent surface heat fluxes using sequences of remotely sensed land surface temperature  

E-Print Network (OSTI)

Fluxes of heat and moisture at the land-surface play a significant role in the climate system. These fluxes interact with the overlying atmosphere and influence the characteristics of the planetary boundary layer (e.g. ...

Bateni, Sayed Mohyeddin

2011-01-01T23:59:59.000Z

451

Gas flux and carbonate occurrence at a shallow seep of thermogenic natural gas  

E-Print Network (OSTI)

010-0184-0 ORIGINAL Gas flux and carbonate occurrence atof thermogenic natural gas Franklin S. Kinnaman & Justine B.comprehensive survey of gas flux at Brian Seep yielded a

2010-01-01T23:59:59.000Z

452

Lidar Scanning of Momentum Flux in and above the Atmospheric Surface Layer  

Science Journals Connector (OSTI)

Methods to measure the vertical flux of horizontal momentum using both continuous wave and pulsed Doppler lidar profilers are evaluated. The lidar measurements are compared to momentum flux observations performed with sonic anemometers over flat ...

J. Mann; A. Pea; F. Bingl; R. Wagner; M. S. Courtney

2010-06-01T23:59:59.000Z

453

A Calculation on the Self-field of a Point Charge and the Unruh Effect  

E-Print Network (OSTI)

Within the context of quantum field theory in curved spacetimes, Hacyan and Sarmiento defined the vacuum stress-energy tensor with respect to the accelerated observer. They calculated it for uniform acceleration and circular motion, and derived that the rotating observer perceives a flux. Mane related the flux to synchrotron radiation. In order to investigate the relation between the vacuum stress and bremsstrahlung, we estimate the stress-energy tensor of the electromagnetic field generated by a point charge, at the position of the charge. We use the retarded field as a self-field of the point charge. Therefore the tensor diverges if we evaluate it as it is. Hence we remove the divergent contributions by using the expansion of the tensor in powers of the distance from the point charge. Finally, we take an average for the angular dependence of the expansion. We calculate it for the case of uniform acceleration and circular motion, and it is found that the order of the vacuum stress multiplied by $\\pi\\alpha$ ($\\alpha=e^2/\\hbar c$ is the fine structure constant) is equal to that of the self-stress. In the Appendix, we give another trial approach with a similar result.

T. Hirayama; T. Hara

2000-07-24T23:59:59.000Z

454

The estimation of neutrino flux produced by $\\mathbf{pep}$ reactions in the Sun  

E-Print Network (OSTI)

The experimental result of the solar neutrino flux at one AU produced by the $p+p+e \\rightarrow d+\

B. F. Irgaziev; V. B. Belyaev; Jameel-Un Nabi

2014-08-20T23:59:59.000Z

455

Building Technologies Office: 179D DOE Calculator  

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

179D DOE Calculator 179D DOE Calculator EERE » Building Technologies Office » 179D DOE Calculator Printable Version Bookmark and Share What is the 179D federal tax deduction? Section 179D of the Federal Tax Code provides a tax deduction for energy efficiency improvements to commercial buildings. A building may qualify for a tax deduction under Section 179D not to exceed $1.80/ft² for whole building performance or $0.60/ft² for a partially qualifying property for envelope, heating, ventilating, and air conditioning (HVAC), or lighting improvements. In addition, a building may qualify with a reduced installed lighting power under the interim lighting rule. Energy simulations are required to show compliance with the energy and power cost savings requirements. View more detailed information.

456

Eddy-Current-Induced Multipole Field Calculations  

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

Eddy-Current-Induced Multipole Field Calculations Eddy-Current-Induced Multipole Field Calculations September 29, 2003 1 Eddy-Current-Induced Multipole Field Calculations Nicholas S. Sereno, Suk H. Kim 1.0 Abstract Time-varying magnetic fields of magnets in booster accelerators induce substantial eddy currents in the vacuum chambers. The eddy currents in turn act to produce various multi- pole fields that act on the beam. These fields must be taken into account when doing a lat- tice design. In the APS booster, the relatively long dipole magnets (3 meters) are linearly ramped to accelerate the injected 325 MeV beam to 7 GeV. Substantial dipole and sextu- pole fields are generated in the elliptical vacuum chamber from the induced eddy currents. In this note, formulas for the induced dipole and sextupole fields are derived for elliptical and rectangular vacuum chambers for a time-varying dipole field. A discussion is given

457

Refinement of synchroton spectral tip calculations  

Science Journals Connector (OSTI)

Refinements in the computing techniques were performed in the calculation of transition rates to the ground and first excited states in magnetic bremsstrahlung via the use of exact matrix elements. The above calculations were carried out to double precision on a UNIVAC 1108 computer as was the calculation of transition rates to the second excited state. Empirical formulas are given for the transition rates from arbitrary upper states to the ground state, first excited state, and the second excited state for arbitrary magnetic field strengths. In addition the relative probabilities of transitions from level three to the remaining three lower levels is investigated in detail in the vicinity of the quantum-mechanical critical field, and the spectral tip structure for an electron in state n?1 is viewed in this high-field regime.

D. White

1978-09-15T23:59:59.000Z

458

Healthcare Energy Impact Calculator | Open Energy Information  

Open Energy Info (EERE)

Healthcare Energy Impact Calculator Healthcare Energy Impact Calculator Jump to: navigation, search Tool Summary Name: Healthcare Energy Impact Calculator Agency/Company /Organization: Practice Greenhealth Sector: Climate User Interface: Website Complexity/Ease of Use: Simple Website: www.eichealth.org/ Cost: Free Related Tools UNEP-Bioenergy Decision Support Tool Global Relationship Assessment to Protect the Environment (GRAPE) World Induced Technical Change Hybrid (WITCH) ... further results Find Another Tool FIND DEVELOPMENT IMPACTS ASSESSMENT TOOLS An online tool based on U.S. Environmental Protection Agency (EPA) analysis of health impacts of power plant emissions of sulfur dioxide, nitrogen oxides, and mercury, this tool estimates premature deaths, chronic bronchitis, asthma attacks, emergency room visits, and more, by kWh/year.

459

Effect of flow topology on the calculation of two-phase frictional multipliers in uniformly heated flow of R-134a in a rectangular duct  

SciTech Connect

The two-phase frictional multipliers for SUVA R-134a flowing in a rectangular duct (with D{sub H} = 4.8 mm) have been measured for three nominal system pressures (0.88, 1.34 and 2.34 MPa) and four nominal mass fluxes (510, 1020 and 1740, 2040 kg/m{sup 2}/s) under uniform heat flux conditions. The data is compared with adiabatic data previously taken at similar flow conditions, as well as with several classical multiplier correlations. The comparisons reveal a strong effect of pressure and mass flux on the flow topology and, by extension, a large effect on the calculation of acceleration and frictional pressure drop components. For this fluid and this geometry, entrainment and fluid separation is enhanced at higher pressures and mass flux such that most of the liquid exists in the test section edges and as dispersed droplets in the core. For these cases, the classical simplified approach to calculate acceleration pressure drop fails to adequately predict the acceleration component and leads to erroneous calculations of frictional pressure drop from the measured total pressure drop. Best estimates of the true acceleration component are given, based on void profiles measured with a gamma densitometer system, comparisons to the adiabatic data, and recasting the data in terms of the total pressure drop multiplier as a function of the Martinelli parameter, X{sub tt}. (author)

Vassallo, Peter; Kevin Cope, W.; Smith, Walter C. [Bechtel Marine Propulsion Corporation, Niskayuna, NY 12309 (United States)

2010-11-15T23:59:59.000Z

460

A Review of Proposed Upgrades to the High Flux Isotope Reactor and Potential Impacts to Reactor Vessel Integrity  

SciTech Connect

The High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory (ORNL) was scheduled in October 2000 to implement design upgrades that include the enlargement of the HB-2 and HB-4 beam tubes. Higher dose rates and higher radiation embrittlement rates were predicted for the two beam-tube nozzles and surrounding vessel areas. ORNL had performed calculations for the upgraded design to show that vessel integrity would be maintained at acceptable levels. Pacific Northwest National Laboratory (PNNL) was requested by the U.S. Department of Energy Headquarters (DOE/HQ) to perform an independent peer review of the ORNL evaluations. PNNL concluded that the calculated probabilities of failure for the HFIR vessel during hydrostatic tests and for operational conditions as estimated by ORNL are an acceptable basis for selecting pressures and test intervals for hydrostatic tests and for justifying continued operation of the vessel. While there were some uncertainties in the embrittlement predictions, the ongoing efforts at ORNL to measure fluence levels at critical locations of the vessel wall and to test materials from surveillance capsules should be effective in dealing with embrittlement uncertainties. It was recommended that ORNL continue to update their fracture mechanics calculations to reflect methods and data from ongoing research for commercial nuclear power plants. Such programs should provide improved data for vessel fracture mechanics calculations.

Simonen, Fredric A.

2001-05-31T23:59:59.000Z

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

Sequential Covariance Calculation for Exoplanet Image Processing  

E-Print Network (OSTI)

Direct imaging of exoplanets involves the extraction of very faint signals from highly noisy data sets, with noise that often exhibits significant spatial, spectral and temporal correlations. As a results, a large number of post-processing algorithms have been developed in order to optimally decorrelate the signal from the noise. In this paper, we explore four such closely related algorithms, all of which depend heavily on the calculation of covariances between large data sets of imaging data. We discuss the similarities and differences between these methods, and demonstrate how the use sequential calculation techniques can significantly improve their computational efficiencies.

Savransky, Dmitry

2015-01-01T23:59:59.000Z

462

Fully Automated Calculations in the complex MSSM  

E-Print Network (OSTI)

We review recent progress towards automated higher-order calculations in the MSSM with complex parameters (cMSSM). The consistent renormalization of all relevant sectors of the cMSSM and the inclusion into the FeynArts/FormCalc framework has recently been completed. Some example calculations applying this framework are briefly discussed. These include two-loop corrections to cMSSM Higgs boson masses as well as partial decay widths of electroweak supersymmetric particles decaying into a Higgs boson and another supersymmetric particle.

Hahn, T; von der Pahlen, F; Rzehak, H; Schappacher, C

2014-01-01T23:59:59.000Z

463

Fully Automated Calculations in the complex MSSM  

E-Print Network (OSTI)

We review recent progress towards automated higher-order calculations in the MSSM with complex parameters (cMSSM). The consistent renormalization of all relevant sectors of the cMSSM and the inclusion into the FeynArts/FormCalc framework has recently been completed. Some example calculations applying this framework are briefly discussed. These include two-loop corrections to cMSSM Higgs boson masses as well as partial decay widths of electroweak supersymmetric particles decaying into a Higgs boson and another supersymmetric particle.

T. Hahn; S. Heinemeyer; F. von der Pahlen; H. Rzehak; C. Schappacher

2014-07-01T23:59:59.000Z

464

Automated calculations for multi-leg processes  

E-Print Network (OSTI)

The search for signals of new physics at the forthcoming LHC experiments involves the analysis of final states characterised by a high number of hadronic jets or identified particles. Precise theoretical predictions for these processes require the computation of scattering amplitudes with a large number of external particles and beyond leading order in perturbation theory. The complexity of a calculation grows with the number of internal loops as well as with the number of external legs. Automatisation of at least next-to-leading order calculations for LHC processes is therefore a timely task. I will discuss various approaches.

Stefan Weinzierl

2007-07-23T23:59:59.000Z

465

A Comparative Study of Modular Axial Flux Podded Generators for Marine Current Turbines  

E-Print Network (OSTI)

for MCTs. For that purpose, a comparative study is proposed, to assess modular axial flux permanent magnet current turbine, axial flux permanent magnet generator, design, optimization. Nomenclature MCT = Marine Current Turbine; AFPM = Axial Flux Permanent Magnet. I. Introduction Marine energy has become an issue

Brest, Université de

466

Ohmic Flux Consumption During Initial Operation of the NSTX Spherical Torus  

E-Print Network (OSTI)

Ohmic Flux Consumption During Initial Operation of the NSTX Spherical Torus J. Menard 1 , B. Le­2.2, triangularity #=0.4, internal inductance l i =0.6, and Ejima coe#cient CE=0.35. Flux consumption e of the equations used for parameterizing flux consumption, Section 3. describes the experimental results including

467

Sensitivity of Cenozoic Antarctic ice sheet variations to geothermal heat flux  

E-Print Network (OSTI)

Sensitivity of Cenozoic Antarctic ice sheet variations to geothermal heat flux David Pollard a sheet to geothermal heat flux is investigated, using a coupled climate­ice sheet model with various prescribed values and patterns of geothermal heat flux. The sudden growth of major ice across the Eocene

468

Dynamics of Airfoil Separation Control Using Zero-Net Mass-Flux Forcing  

E-Print Network (OSTI)

Dynamics of Airfoil Separation Control Using Zero-Net Mass-Flux Forcing Reni Raju and Rajat Mittal, Gainesville, Florida 32611 DOI: 10.2514/1.37147 Zero-net mass-flux jet based control of flow separation over using zero-net mass-flux actuation can either control/delay boundary layer separation or lead to global

Mittal, Rajat

469

Simple Models of Zero-Net Mass-Flux Jets for Flow Control Simulations  

E-Print Network (OSTI)

Simple Models of Zero-Net Mass-Flux Jets for Flow Control Simulations Reni Raju Dynaflow Inc for modeling the dynamics of zero- net mass-flux (ZNMF) actuators, the computational costs associated-flow model. 1. INTRODUCTION Zero-net mass-flux (ZNMF) actuators or "synthetic jets" have potential

Mittal, Rajat

470

Residual Magnetic Flux Leakage: A Possible Tool for Studying Pipeline Defects  

E-Print Network (OSTI)

Residual Magnetic Flux Leakage: A Possible Tool for Studying Pipeline Defects Vijay Babbar1 weaker flux signals. KEY WORDS: Magnetic flux leakage; residual magnetization; pipeline defects; pipeline pipelines, which may develop defects such as corrosion pits as they age in service.(1) Under the ef- fect

Clapham, Lynann

471

Mean and Variability of Air-Sea Heat Fluxes in the Indian Ocean  

E-Print Network (OSTI)

-sea heat Fluxes) Project: blended product planned activity: daily, 1º-grid, mid 1950's ­ present currently available: daily, 1º-grid, 1988-2003 #12;OAFlux (Objectively Analyzed Air-sea Heat Fluxes) For the GlobalMean and Variability of Air-Sea Heat Fluxes in the Indian Ocean Lisan Yu Woods Hole Oceanographic

Yu, Lisan

472

Biophysical regulations of carbon fluxes of a steppe and a cultivated cropland in semiarid Inner Mongolia  

E-Print Network (OSTI)

Biophysical regulations of carbon fluxes of a steppe and a cultivated cropland in semiarid Inner, such as energy and material fluxes, associated with the land conversions. The carbon fluxes, including net land-use settings ­ a typical steppe and a crop field in Inner Mongolia ­ were measured in the growing

Chen, Jiquan

473

Validation of a Monte Carlo based depletion methodology via High Flux Isotope Reactor HEU post-irradiation examination measurements  

SciTech Connect

The purpose of this study is to validate a Monte Carlo based depletion methodology by comparing calculated post-irradiation uranium isotopic compositions in the fuel elements of the High Flux Isotope Reactor (HFIR) core to values measured using uranium mass-spectrographic analysis. Three fuel plates were analyzed: two from the outer fuel element (OFE) and one from the inner fuel element (IFE). Fuel plates O-111-8, O-350-1, and I-417-24 from outer fuel elements 5-O and 21-O and inner fuel element 49-I, respectively, were selected for examination. Fuel elements 5-O, 21-O, and 49-1 were loaded into HFIR during cycles 4, 16, and 35, respectively (mid to late 1960s). Approximately one year after each of these elements were irradiated, they were transferred to the High Radiation Level Examination Laboratory (HRLEL) where samples from these fuel plates were sectioned and examined via uranium mass-spectrographic analysis. The isotopic composition of each of the samples was used to determine the atomic percent of the uranium isotopes. A Monte Carlo based depletion computer program, ALEPH, which couples the MCNP and ORIGEN codes, was utilized to calculate the nuclide inventory at the end-of-cycle (EOC). A current ALEPH/MCNP input for HFIR fuel cycle 400 was modified to replicate cycles 4, 16, and 35. The control element withdrawal curves and flux trap loadings were revised, as well as the radial zone boundaries and nuclide concentrations in the MCNP model. The calculated EOC uranium isotopic compositions for the analyzed plates were found to be in good agreement with measurements, which reveals that ALEPH/MCNP can accurately calculate burn-up dependent uranium isotopic concentrations for the HFIR core. The spatial power distribution in HFIR changes significantly as irradiation time increases due to control element movement. Accurate calculation of the end-of-life uranium isotopic inventory is a good indicator that the power distribution variation as a function of space and time is accurately calculated, i.e. an integral check. Hence, the time dependent heat generation source terms needed for reactor core thermal hydraulic analysis, if derived from this methodology, have been shown to be accurate for highly enriched uranium (HEU) fuel.

Chandler, David [ORNL; Maldonado, G Ivan [ORNL; Primm, Trent [ORNL

2010-01-01T23:59:59.000Z

474

Brueckner calculations in harmonic oscillator basis  

Science Journals Connector (OSTI)

The binding energy (b.e.), r.m.s. radius and charge form factor of the4He nucleus are calculated for the Hamada-Johnston potential using the method developed in part I of this study. The single-particle spectrum ...

J. Blank

1979-01-01T23:59:59.000Z

475

CALCULATION OF ION ENERGY-DEPOSITION SPECTRA  

E-Print Network (OSTI)

CALCULATION OF ION ENERGY-DEPOSITION SPECTRA IN SILICON, LITHIUM-FLUORIDE, BORON, AND BORON CARBIDE by J.K. Shultis and D.S. McGregor Department of Mechanical and Nuclear Engineering Kansas State University Manhattan, Kansas 55606 published as Report 299 ENGINEERING EXPERIMENT STATION College

Shultis, J. Kenneth

476

Calculator program aids well cost management  

SciTech Connect

A TI-59 calculator program designed to track well costs on daily and weekly bases can dramatically facilitate the task of monitoring well expenses. The program computes the day total, cumulative total, cumulative item-row totals, and day-week total. For carrying these costs throughout the drilling project, magnetic cards can store the individual and total cumulative well expenses.

Doyle, C.J.

1982-01-18T23:59:59.000Z

477

Program performs vapor-liquid equilibrium calculations  

SciTech Connect

A program designed for the Hewlett-Packard HP-41CV or 41C calculators solves basic vapor-liquid equilibrium problems, including figuring the dewpoint, bubblepoint, and equilibrium flash. The algorithm uses W.C. Edmister's method for predicting ideal-solution K values.

Rice, V.L.

1982-06-28T23:59:59.000Z

478

Cool Roof Calculator | Open Energy Information  

Open Energy Info (EERE)

Cool Roof Calculator Cool Roof Calculator Jump to: navigation, search Tool Summary Name: Cool Roof Calculator Agency/Company /Organization: Oak Ridge National Laboratory Sector: Energy Focus Area: Buildings, Energy Efficiency Resource Type: Online calculator, Software/modeling tools User Interface: Website Website: www.ornl.gov/sci/roofs+walls/facts/CoolCalcEnergy.htm Country: United States Cost: Free Northern America Coordinates: 37.09024°, -95.712891° 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":37.09024,"lon":-95.712891,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

479

Calculations of Induced Activity in the ATLAS Experiment for Nuclear Waste Zoning.  

E-Print Network (OSTI)

Extensive calculations were performed with the general activation formula using the fluxes of high-energy hadrons and low-energy neutrons previously obtained from simulations with the GCALOR code of the ATLAS detector. Three sets of proton cross-sections were used for hadrons energy above 20 MeV: (a) one set calculated with the YIELDX code (i.e., the Silberberg-Tsao formula of partial proton spallation cross-sections), (b) one set calculated with the Rudstam formula, and (c) the ??best-estimate' dataset which was a compilation of the available experimental and calculated data. In the energy region below 20 MeV, neutron activation cross-sections were taken from evaluated nuclear data files. The activity of each nuclide for a predefined operation scenario (i.e., number and duration of irradiation and shutdown cycles) was normalized to reference values taken from the European or Swiss legislations, to obtain an aggregate estimate of the radiological hazard comparable with a nuclear waste zoning definition cr...

Morev, M N

2007-01-01T23:59:59.000Z

480

Calculation of Kinetics Parameters for the NBSR  

SciTech Connect

The delayed neutron fraction and prompt neutron lifetime have been calculated at different times in the fuel cycle for the NBSR when fueled with both high-enriched uranium (HEU) and low-enriched uranium (LEU) fuel. The best-estimate values for both the delayed neutron fraction and the prompt neutron lifetime are the result of calculations using MCNP5-1.60 with the most recent ENDFB-VII evaluations. The best-estimate values for the total delayed neutron fraction from fission products are 0.00665 and 0.00661 for the HEU fueled core at startup and end-of-cycle, respectively. For the LEU fuel the best estimate values are 0.00650 and 0.00648 at startup and end-of-cycle, respectively. The present recommendations for the delayed neutron fractions from fission products are smaller than the value reported previously of 0.00726 for the HEU fuel. The best-estimate values for the contribution from photoneutrons will remain as 0.000316, independent of the fuel or time in the cycle.The values of the prompt neutron lifetime as calculated with MCNP5-1.60 are compared to values calculated with two other independent methods and the results are in reasonable agreement with each other. The recommended, conservative values of the neutron lifetime for the HEU fuel are 650 {micro}s and 750 {micro}s for the startup and end-of-cycle conditions, respectively. For LEU fuel the recommended, conservative values are 600 {micro}s and 700 {micro}s for the startup and end-of-cycle conditions, respectively. In all three calculations, the prompt neutron lifetime was determined to be longer for the end-of-cycle equilibrium condition when compared to the startup condition. The results of the three analyses were in agreement that the LEU fuel will exhibit a shorter prompt neutron lifetime when compared to the HEU fuel.

Hanson A. L.; Diamond D.

2012-03-06T23:59:59.000Z

Note: This page contains sample records for the topic "vls-pgm calculated flux" 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

Closed flux tubes and their string description in D=2+1 SU(N) gauge theories  

E-Print Network (OSTI)

We carry out lattice calculations of the spectrum of confining flux tubes that wind around a spatial torus of variable length l, in 2+1 dimensions. We compare the energies of the lowest c.30 states to the free string Nambu-Goto model and to recent results on the universal properties of effective string actions. Our most useful calculations are in SU(6) at a small lattice spacing, which we check is very close to the large-N continuum limit. We find that the energies, En(l), are remarkably close to the predictions of the free string Nambu-Goto model, even well below the critical length at which the expansion of the Nambu-Goto energy in powers of 1/l diverges and the series needs to be resummed. Our analysis of the ground state supports the universality of the O(1/l) and the O(1/l^3) corrections to l.sigma, and we find that the deviations from Nambu-Goto at small l prefer a leading correction that is O(1/l^7), consistent with theoretical expectations. We find that the low-lying states that contain a single phonon excitation are also consistent with the leading O(1/l^7) correction dominating down to the smallest values of l. By contrast our analysis of the other light excited states clearly shows that for these states the corrections at smaller l resum to a much smaller effective power. Finally, and in contrast to our recent calculations in D=3+1, we find no evidence for the presence of any non-stringy states that could indicate the excitation of massive flux tube modes.

Andreas Athenodorou; Barak Bringoltz; Michael Teper

2011-03-30T23:59:59.000Z

482

Study of stellar wind energy flux: from the Sun to Beltegeuse  

Science Journals Connector (OSTI)

This study examines the solar wind energy flux from 17 years of Ulysses measurements at different heliolatitudes completed by multi?instrument observations. The solar wind energy flux is almost constant nearly independant on wind speed and solar activity. We then compare the energy flux of the Sun to the stellar wind fluxes in addition to the luminosity fluxes from young stars to supergiants. A share processus of origin and acceleration of the main?sequence stars and cool giants winds is suggested. T?Tauri starswinds show a possible result of an accretion powered wind.

G. Le Chat; N. Meyer?Vernet; K. Issautier

2009-01-01T23:59:59.000Z

483

High-flux solar photon processes: Opportunities for applications  

SciTech Connect

The overall goal of this study was to identify new high-flux solar photon (HFSP) processes that show promise of being feasible and in the national interest. Electric power generation and hazardous waste destruction were excluded from this study at sponsor request. Our overall conclusion is that there is promise for new applications of concentrated solar photons, especially in certain aspects of materials processing and premium materials synthesis. Evaluation of the full potential of these and other possible applications, including opportunities for commercialization, requires further research and testing. 100 refs.

Steinfeld, J.I.; Coy, S.L.; Herzog, H.; Shorter, J.A.; Schlamp, M.; Tester, J.W.; Peters, W.A. (Massachusetts Inst. of Tech., Cambridge, MA (United States))

1992-06-01T23:59:59.000Z

484

Molten Metal Treatment by Salt Fluxing with Low Environmental Emissions  

SciTech Connect

Abstract: Chlorine gas is traditionally used for fluxing of aluminum melt for removal of alkali and alkaline earth elements. However this results in undesirable emissions of particulate matter and gases such as HCl and chlorine, which are often at unacceptable levels. Additionally, chlorine gas is highly toxic and its handling, storage, and use pose risks to employees and the local community. Holding of even minimal amounts of chlorine necessitates extensive training for all plant employees. Fugitive emissions from chlorine usage within the plant cause accelerated corrosion of plant equipment. The Secondary Aluminum Maximum Achievable Control Technology (MACT) under the Clean Air Act, finalized in March 2000 has set very tough new limits on particulate matter (PM) and total hydrogen chloride emissions from aluminum melting and holding furnaces. These limits are 0.4 and 0.1 lbs per ton of aluminum for hydrogen chloride and particulate emissions, respectively. Assuming new technologies for meeting these limits can be found, additional requirements under the Clean Air Act (Prevention of Significant Deterioration and New Source Review) trigger Best Available Control Technology (BACT) for new sources with annual emissions (net emissions not expressed per ton of production) over specified amounts. BACT currently is lime coated bag-houses for control of particulate and HCl emissions. These controls are expensive, difficult to operate and maintain, and result in reduced American competitiveness in the global economy. Solid salt fluxing is emerging as a viable option for the replacement of chlorine gas fluxing, provided emissions can be consistently maintained below the required levels. This project was a cooperative effort between the Ohio State University and Alcoa to investigate and optimize the effects of solid chloride flux addition in molten metal for alkali impurity and non-metallic inclusion removal minimizing dust and toxic emissions and maximizing energy conservation. In this program, the salt metal interactions were studies and the emissions at laboratory scale at OSU were monitored. The goal of the project was to obtain a fundamental understanding, based on first principles, of the pollutant formation that occurs when the salts are used in furnaces. This information will be used to control process parameters so that emissions are consistently below the required levels. The information obtained in these experiments will be used in industrial furnaces at aluminum plants and which will help in optimizing the process.

Yogeshwar Sahai

2007-07-31T23:59:59.000Z

485

Cosmic Ray Sun Shadow in Soudan 2 Underground Muon Flux  

E-Print Network (OSTI)

The absorption of cosmic rays by the sun produces a shadow at the earth. The angular offset and broadening of the shadow are determined by the magnitude and structure of the interplanetary magnetic field (IPMF) in the inner solar system. We report the first measurement of the solar cosmic ray shadow by detection of deep underground muon flux in observations made during the entire ten-year interval 1989 to 1998. The sun shadow varies significantly during this time, with a $3.3\\sigma$ shadow observed during the years 1995 to 1998.

Soudan 2 Collaboration

1999-05-24T23:59:59.000Z

486

Fast Flux Test Facility final safety analysis report. Amendment 73  

SciTech Connect

This report provides Final Safety Analysis Report (FSAR) Amendment 73 for incorporation into the Fast Flux Test Facility (FFTR) FSAR set. This page change incorporates Engineering Change Notices (ECNs) issued subsequent to Amendment 72 and approved for incorparoration before May 6, 1993. These changes include: Chapter 3, design criteria structures, equipment, and systems; chapter 5B, reactor coolant system; chapter 7, instrumentation and control systems; chapter 9, auxiliary systems; chapter 11, reactor refueling system; chapter 12, radiation protection and waste management; chapter 13, conduct of operations; chapter 17, technical specifications; chapter 20, FFTF criticality specifications; appendix C, local fuel failure events; and appendix Fl, operation at 680{degrees}F inlet temperature.

Gantt, D.A.

1993-08-01T23:59:59.000Z

487

Capacitively coupled RF voltage probe having optimized flux linkage  

DOE Patents (OSTI)

An RF sensor having a novel current sensing probe and a voltage sensing probe to measure voltage and current. The current sensor is disposed in a transmission line to link all of the flux generated by the flowing current in order to obtain an accurate measurement. The voltage sensor is a flat plate which operates as a capacitive plate to sense voltage on a center conductor of the transmission line, in which the measured voltage is obtained across a resistance leg of a R-C differentiator circuit formed by the characteristic impedance of a connecting transmission line and a capacitance of the plate, which is positioned proximal to the center conductor.

Moore, James A. (Powell, TN); Sparks, Dennis O. (Maryville, TN)

1999-02-02T23:59:59.000Z

488

Design Study for a Low-enriched Uranium Core for the High Flux Isotope Reactor, Annual Report for FY 2007  

SciTech Connect

This report documents progress made during fiscal year 2007 in studies of converting the High Flux Isotope Reactor (HFIR) from highly enriched uranium (HEU) fuel to low enriched uranium fuel (LEU). Conversion from HEU to LEU will require a change in fuel form from uranium oxide to a uranium-molybdenum alloy. A high volume fraction U/Mo-in-Al fuel could attain the same neutron flux performance as with the current, HEU fuel but materials considerations appear to preclude production and irradiation of such a fuel. A diffusion barrier would be required if Al is to be retained as the interstitial medium and the additional volume required for this barrier would degrade performance. Attaining the high volume fraction (55 wt. %) of U/Mo assumed in the computational study while maintaining the current fuel plate acceptance level at the fuel manufacturer is unlikely, i.e. no increase in the percentage of plates rejected for non-compliance with the fuel specification. Substitution of a zirconium alloy for Al would significantly increase the weight of the fuel element, the cost of the fuel element, and introduce an as-yet untried manufacturing process. A monolithic U-10Mo foil is the choice of LEU fuel for HFIR. Preliminary calculations indicate that with a modest increase in reactor power, the flux performance of the reactor can be maintained at the current level. A linearly-graded, radial fuel thickness profile is preferred to the arched profile currently used in HEU fuel because the LEU fuel media is a metal alloy foil rather than a powder. Developments in analysis capability and nuclear data processing techniques are underway with the goal of verifying the preliminary calculations of LEU flux performance. A conceptual study of the operational cost of an LEU fuel fabrication facility yielded the conclusion that the annual fuel cost to the HFIR would increase significantly from the current, HEU fuel cycle. Though manufacturing can be accomplished with existing technology, several engineering proof-of-principle tests would be required. The RERTR program is currently conducting a series of generic fuel qualification tests at the Advanced Test Reactor. A review of these tests and a review of the safety basis for the current, HEU fuel cycle led to the identification of a set of HFIR-specific fuel qualification tests. Much additional study is required to formulate a HFIR-specific fuel qualification plan from this set. However, one such test - creating a graded fuel profile across a flat foil - has been initiated with promising results.

Primm, Trent [ORNL; Ellis, Ronald James [ORNL; Gehin, Jess C [ORNL; Ilas, Germina [ORNL; Miller, James Henry [ORNL; Sease, John D [ORNL

2007-11-01T23:59:59.000Z

489

The determination of neutron flux in the Texas A & M triga reactor during pulse and steady-state operations  

E-Print Network (OSTI)

-state operation. Neutron flux measurement during a pulse presents an additional problem in that the flux levels vary during the rapid rise and fall in reactor power. The power level transient of the reactor was followed, using the current output of a boron-10... as a flux monitor only at low power. levels or neutron fluxes. The antimony flux monitor in the steady-state flux measurement showed the same type of increase in flux magni- tude as that of the pulse measurement. The high flux values at steady...

O'Donnell, John Joseph

2012-06-07T23:59:59.000Z

490

Six-Week Time Series Of Eddy Covariance Co2 Flux At Mammoth Mountain,  

Open Energy Info (EERE)

Six-Week Time Series Of Eddy Covariance Co2 Flux At Mammoth Mountain, Six-Week Time Series Of Eddy Covariance Co2 Flux At Mammoth Mountain, California- Performance Evaluation And Role Of Meteorological Forcing Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Six-Week Time Series Of Eddy Covariance Co2 Flux At Mammoth Mountain, California- Performance Evaluation And Role Of Meteorological Forcing Details Activities (1) Areas (1) Regions (0) Abstract: CO2 and heat fluxes were measured over a six-week period (09/08/2006 to 10/24/2006) by the eddy covariance (EC) technique at the Horseshoe Lake tree kill (HLTK), Mammoth Mountain, CA, a site with complex terrain and high, spatially heterogeneous CO2 emission rates. EC CO2 fluxes ranged from 218 to 3500 g m- 2 d- 1 (mean = 1346 g m- 2 d- 1). Using footprint modeling, EC CO2 fluxes were compared to CO2 fluxes measured by

491

Simulation Study of Solar Plasma Eruptions Caused by Interactions between Emerging Flux and Coronal Arcade Fields  

E-Print Network (OSTI)

We investigate the triggering mechanisms of plasma eruptions in the solar atmosphere due to interactions between emerging flux and coronal arcade fields by using two-dimensional MHD simulations. We perform parameter surveys with respect to arcade field height, magnetic field strength, and emerging flux location. Our results show that two possible mechanisms exist, and which mechanism is dominant depends mostly on emerging flux location. One mechanism appears when the location of emerging flux is close to the polarity inversion line (PIL) of an arcade field. This mechanism requires reconnection between the emerging flux and the arcade field, as pointed out by previous studies. The other mechanism appears when the location of emerging flux is around the edge of an arcade field. This mechanism does not require reconnection between the emerging flux and the arcade field but does demand reconnection in the arcade field above the PIL. Furthermore, we found that the eruptive condition for this mechanism can be repre...

Kaneko, T

2014-01-01T23:59:59.000Z

492

CANISTER HANDLING FACILITY CRITICALITY SAFETY CALCULATIONS  

SciTech Connect

This design calculation revises and updates the previous criticality evaluation for the canister handling, transfer and staging operations to be performed in the Canister Handling Facility (CHF) documented in BSC [Bechtel SAIC Company] 2004 [DIRS 167614]. The purpose of the calculation is to demonstrate that the handling operations of canisters performed in the CHF meet the nuclear criticality safety design criteria specified in the ''Project Design Criteria (PDC) Document'' (BSC 2004 [DIRS 171599], Section 4.9.2.2), the nuclear facility safety requirement in ''Project Requirements Document'' (Canori and Leitner 2003 [DIRS 166275], p. 4-206), the functional/operational nuclear safety requirement in the ''Project Functional and Operational Requirements'' document (Curry 2004 [DIRS 170557], p. 75), and the functional nuclear criticality safety requirements described in the ''Canister Handling Facility Description Document'' (BSC 2004 [DIRS 168992], Sections 3.1.1.3.4.13 and 3.2.3). Specific scope of work contained in this activity consists of updating the Category 1 and 2 event sequence evaluations as identified in the ''Categorization of Event Sequences for License Application'' (BSC 2004 [DIRS 167268], Section 7). The CHF is limited in throughput capacity to handling sealed U.S. Department of Energy (DOE) spent nuclear fuel (SNF) and high-level radioactive waste (HLW) canisters, defense high-level radioactive waste (DHLW), naval canisters, multicanister overpacks (MCOs), vertical dual-purpose canisters (DPCs), and multipurpose canisters (MPCs) (if and when they become available) (BSC 2004 [DIRS 168992], p. 1-1). It should be noted that the design and safety analyses of the naval canisters are the responsibility of the U.S. Department of the Navy (Naval Nuclear Propulsion Program) and will not be included in this document. In addition, this calculation is valid for the current design of the CHF and may not reflect the ongoing design evolution of the facility. However, it is anticipated that design changes to the facility layout will have little or no impact on the criticality results and/or conclusions presented in this document. This calculation is subject to the ''Quality Assurance Requirements and Description'' (DOE 2004 [DIRS 171539]) because the CHF is included in the Q-List (BSC 2005 [DIRS 171190], p. A-3) as an item important to safety. This calculation is prepared in accordance with AP-3.12Q, ''Design Calculations and Analyses'' [DIRS 168413].

C.E. Sanders

2005-04-07T23:59:59.000Z

493

Real-time computation and control of solar flux density on a central receiver (Solar Two) (protection against excess flux density)  

SciTech Connect

The molten salt external central receiver at Solar Two (Daggett, CA) is designed to operate at a very high flux density, near the material limits of the multi-pass receiver. As a result, the system design must address conflicting requirements of high uniform flux density, a limiting flux density which should never be exceeded, low spillage, a rapid reduction in flux density near the high temperature outlet and cost effective use of the heliostat field. This aggressive design also needs to be dealt with during the operation of the receiver, as the solar insolation or the operating conditions may well diverge significantly from the design conditions, resulting in areas on the receiver where the flux density is higher than the allowable flux density, i.e., in local hot spots. Such local hot spots have been addressed by adding two significant improvements to the original system: interactive heliostat-aiming computation; and real-time control of the solar flux densities on the receiver. In this article, the authors describe in detail the processors which operate to prevent flux density from exceeding the defined allowable value.

Vant-Hull, L.L.; Izygon, M.E. [Univ. of Houston, TX (United States). Physics Dept.; Pitman, C.L. [NASA Johnson Space Center, Houston, TX (United States)

1996-11-01T23:59:59.000Z

494

Measuring the Magnetic Flux Density in the CMS Steel Yoke  

E-Print Network (OSTI)

The Compact Muon Solenoid (CMS) is a general purpose detector, designed to run at the highest luminosity at the CERN Large Hadron Collider (LHC). Its distinctive features include a 4 T superconducting solenoid with 6-m-diameter by 12.5-m-length free bore, enclosed inside a 10000-ton return yoke made of construction steel. The return yoke consists of five dodecagonal three-layered barrel wheels and four end-cap disks at each end comprised of steel blocks up to 620 mm thick, which serve as the absorber plates of the muon detection system. Accurate characterization of the magnetic field everywhere in the CMS detector is required. To measure the field in and around the steel, a system of 22 flux-loops and 82 3-D Hall sensors is installed on the return yoke blocks. Fast discharges of the solenoid (190 s time-constant) made during the CMS magnet surface commissioning test at the solenoid central fields of 2.64, 3.16, 3.68 and 4.01 T were used to induce voltages in the flux-loops. The voltages are measured on-line a...

Klyukhin, V I; Ball, A; Cur, B; Gaddi, A; Gerwig, H; Herv, A; Mulders, M; Loveless, R

2012-01-01T23:59:59.000Z

495

A high-flux BEC source for mobile atom interferometers  

E-Print Network (OSTI)

Quantum sensors based on coherent matter-waves are precise measurement devices whose ultimate accuracy is achieved with Bose-Einstein condensates (BEC) in extended free fall. This is ideally realized in microgravity environments such as drop towers, ballistic rockets and space platforms. However, the transition from lab-based BEC machines to robust and mobile sources with comparable performance is a technological challenge. Here we report on the realization of a miniaturized setup, generating a flux of $4 \\times 10^5$ quantum degenerate $^{87}$Rb atoms every 1.6 s. Ensembles of $1 \\times 10^5$ atoms can be produced at a 1 Hz rate. This is achieved by loading a cold atomic beam directly into a multi-layer atom chip that is designed for efficient transfer from laser-cooled to magnetically trapped clouds. The attained flux of degenerate atoms is on par with current lab-based experiments while offering significantly higher repetition rates. The compact and robust design allows for mobile operation in a variety of...

Rudolph, Jan; Grzeschik, Christoph; Sternke, Tammo; Grote, Alexander; Popp, Manuel; Becker, Dennis; Mntinga, Hauke; Ahlers, Holger; Peters, Achim; Lmmerzahl, Claus; Sengstock, Klaus; Gaaloul, Naceur; Ertmer, Wolfgang; Rasel, Ernst M

2015-01-01T23:59:59.000Z

496

A high-flux BEC source for mobile atom interferometers  

E-Print Network (OSTI)

Quantum sensors based on coherent matter-waves are precise measurement devices whose ultimate accuracy is achieved with Bose-Einstein condensates (BEC) in extended free fall. This is ideally realized in microgravity environments such as drop towers, ballistic rockets and space platforms. However, the transition from lab-based BEC machines to robust and mobile sources with comparable performance is a technological challenge. Here we report on the realization of a miniaturized setup, generating a flux of $4 \\times 10^5$ quantum degenerate $^{87}$Rb atoms every 1.6 s. Ensembles of $1 \\times 10^5$ atoms can be produced at a 1 Hz rate. This is achieved by loading a cold atomic beam directly into a multi-layer atom chip that is designed for efficient transfer from laser-cooled to magnetically trapped clouds. The attained flux of degenerate atoms is on par with current lab-based experiments while offering significantly higher repetition rates. The compact and robust design allows for mobile operation in a variety of demanding environments and paves the way for portable high-precision quantum sensors.

Jan Rudolph; Waldemar Herr; Christoph Grzeschik; Tammo Sternke; Alexander Grote; Manuel Popp; Dennis Becker; Hauke Mntinga; Holger Ahlers; Achim Peters; Claus Lmmerzahl; Klaus Sengstock; Naceur Gaaloul; Wolfgang Ertmer; Ernst M. Rasel

2015-01-02T23:59:59.000Z

497

Magnetic reconnection during flux conversion in a driven spheromak  

Science Journals Connector (OSTI)

During buildup of a spheromak by helicity injection magnetic reconnection converts toroidal flux into poloidal flux. This physics is explored in the resistive magnetohydrodynamic code NIMROD [C. R. Sovinec A. H. Glasser T. A. Gianakon D. C. Barnes R. A. Nebel S. E. Kruger D. D. Schnack S. J. Plimpton A. Tarditi and M. S. Chu J. Comp. Phys.195 355 (2004)] which reveals negative current sheets with ? = ? 0 j ? B ? B 2 reversed relative to th