Sample records for airborne electromagnetic survey

  1. Airborne electromagnetic surveys as a reconnaissance technique...

    Open Energy Info (EERE)

    geothermal exploration Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings: Airborne electromagnetic surveys as a reconnaissance technique for...

  2. Category:Airborne Electromagnetic Survey | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:EzfeedflagBiomassSustainableCSLInformationMissouri:Catalyst2-M ProbeElectromagnetic Survey

  3. A Fractal Interpretation of Controlled-Source Helicopter Electromagnetic Survey Data Seco Creek, Edwards Aquifer, TX

    E-Print Network [OSTI]

    Decker, Kathryn T.

    2010-07-14T23:59:59.000Z

    .1 Literature Review of Airborne Electromagnetic Surveys.................................................................... 36 5.2 Helicopter EM Survey Details..................................... 39 VI DATA ANALYSIS... to detect the magnetic field arising from eddy current induction in the ground. In some airborne surveys, the transmitter and receiver 21 loops are separated by a fixed distance and housed in a bird (often with other equipment for sensing elevation...

  4. Airborne Electromagnetic Survey | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlinPapersWindeySanta2004) |Agawam,Ahmeek,Wisconsin:

  5. Mitigating Geomagnetic Noise in Airborne Magnetic Surveys using GPS

    E-Print Network [OSTI]

    Calgary, University of

    Mitigating Geomagnetic Noise in Airborne Magnetic Surveys using GPS S. Skone Department and tropospheric effects on GPS. She has developed software for mitigation of atmospheric effects and is currently in this frequency band must be modeled, or measured, and mitigated. Despite reduction of many error sources for MAD

  6. TESTING GROUND BASED GEOPHYSICAL TECHNIQUES TO REFINE ELECTROMAGNETIC SURVEYS NORTH OF THE 300 AREA HANFORD WASHINGTON

    SciTech Connect (OSTI)

    PETERSEN SW

    2010-12-02T23:59:59.000Z

    Airborne electromagnetic (AEM) surveys were flown during fiscal year (FY) 2008 within the 600 Area in an attempt to characterize the underlying subsurface and to aid in the closure and remediation design study goals for the 200-PO-1 Groundwater Operable Unit (OU). The rationale for using the AEM surveys was that airborne surveys can cover large areas rapidly at relatively low costs with minimal cultural impact, and observed geo-electrical anomalies could be correlated with important subsurface geologic and hydrogeologic features. Initial interpretation of the AEM surveys indicated a tenuous correlation with the underlying geology, from which several anomalous zones likely associated with channels/erosional features incised into the Ringold units were identified near the River Corridor. Preliminary modeling resulted in a slightly improved correlation but revealed that more information was required to constrain the modeling (SGW-39674, Airborne Electromagnetic Survey Report, 200-PO-1 Groundwater Operable Unit, 600 Area, Hanford Site). Both time-and frequency domain AEM surveys were collected with the densest coverage occurring adjacent to the Columbia River Corridor. Time domain surveys targeted deeper subsurface features (e.g., top-of-basalt) and were acquired using the HeliGEOTEM{reg_sign} system along north-south flight lines with a nominal 400 m (1,312 ft) spacing. The frequency domain RESOLVE system acquired electromagnetic (EM) data along tighter spaced (100 m [328 ft] and 200 m [656 ft]) north-south profiles in the eastern fifth of the 200-PO-1 Groundwater OU (immediately adjacent to the River Corridor). The overall goal of this study is to provide further quantification of the AEM survey results, using ground based geophysical methods, and to link results to the underlying geology and/or hydrogeology. Specific goals of this project are as follows: (1) Test ground based geophysical techniques for the efficacy in delineating underlying geology; (2) Use ground measurements to refine interpretations of AEM data; and (3) Improve the calibration and correlation of AEM information. The potential benefits of this project are as follows: (1) Develop a tool to map subsurface units at the Hanford Site in a rapid and cost effective manner; (2) Map groundwater pathways within the River Corridor; and (3) Aid development of the conceptual site model. If anomalies observed in the AEM data can be correlated with subsurface geology, then the rapid scanning and non-intrusive capabilities provided by the airborne surveys can be used at the Hanford Site to screen for areas that warrant further investigation.

  7. Final report. Electro-Seise, Inc., Airborne Survey

    SciTech Connect (OSTI)

    Schulte, Ralph

    2001-06-01T23:59:59.000Z

    The Rocky Mountain Oilfield Testing Center (RMOTC) has recently completed a test of an airborne microgravity and electric field sensing technology developed by Electro-Seise, Inc. of Fort Worth, Texas. The test involved the use of a single engine airplane to gather data over the Teapot Dome oil field along a tight grid spacing and along thirty (30) survey lines. The resultant gravity structure maps, based on the field data, were found to overlay the known structure of Teapot Dome. In addition, fault maps, based on the field data, were consistent with the known fault strike at Teapot Dome. Projected hydrocarbon thickness maps corresponded to some of the known production histories at RMOTC. Exceptions to the hydrocarbon thickness maps were also found to be true.

  8. airborne electromagnetic surveys: Topics by E-print Network

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

    usage. The number of target companies included 17 big companies, 110 small & mid-size companies, and 5 foreign companies, and the number of respondents included 601 workers...

  9. airborne electromagnetic survey: Topics by E-print Network

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

    usage. The number of target companies included 17 big companies, 110 small & mid-size companies, and 5 foreign companies, and the number of respondents included 601 workers...

  10. Airborne Electromagnetic Survey At Raft River Geothermal Area (1979) | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlinPapersWindeySanta2004) |Agawam,Ahmeek,Wisconsin: EnergyAirAirShares

  11. Airborne Electromagnetic Survey At Chena Geothermal Area (Kolker, 2008) |

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1AMEE JumpAeroWindcapitalInformationChemicals IncOpen Energy

  12. Airborne electromagnetic surveys as a reconnaissance technique for

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1AMEE JumpAeroWindcapitalInformationChemicals

  13. Evaluation of airborne geophysical surveys for large-scale mapping of contaminated mine pools: draft final report

    SciTech Connect (OSTI)

    Geosciences Division, National Energy Technology Laboratory, US Department of Energy, Pittsburgh, PA; Hammack, R.W.

    2006-12-28T23:59:59.000Z

    Decades of underground coal mining has left about 5,000 square miles of abandoned mine workings that are rapidly filling with water. The water quality of mine pools is often poor; environmental regulatory agencies are concerned because water from mine pools could contaminate diminishing surface and groundwater supplies. Mine pools are also a threat to the safety of current mining operations. Conversely, mine pools are a large, untapped water resource that, with treatment, could be used for a variety of industrial purposes. Others have proposed using mine pools in conjunction with heat pumps as a source of heating and cooling for large industrial facilities. The management or use of mine pool water requires accurate maps of mine pools. West Virginia University has predicted the likely location and volume of mine pools in the Pittsburgh Coalbed using existing mine maps, structure contour maps, and measured mine pool elevations. Unfortunately, mine maps only reflect conditions at the time of mining, are not available for all mines, and do not always denote the maximum extent of mining. Since 1999, the National Energy Technology Laboratory (NETL) has been evaluating helicopter-borne, electromagnetic sensing technologies for the detection and mapping of mine pools. Frequency domain electromagnetic sensors are able to detect shallow mine pools (depth < 50 m) if there is sufficient contrast between the conductance of the mine pool and the conductance of the overburden. The mine pools (conductors) most confidently detected by this technology are overlain by thick, resistive sandstone layers. In 2003, a helicopter time domain electromagnetic sensor was applied to mined areas in southwestern Virginia in an attempt to increase the depth of mine pool detection. This study failed because the mine pool targets were thin and not very conductive. Also, large areas of the surveys were degraded or made unusable by excessive amounts of cultural electromagnetic noise that obscured the subtle mine pool anomalies. However, post-survey modeling suggested that thicker, more conductive mine pools might be detected at a more suitable location. The current study sought to identify the best time domain electromagnetic sensor for detecting mine pools and to test it in an area where the mine pools are thicker and more conductive that those in southwestern Virginia. After a careful comparison of all airborne time domain electromagnetic sensors (including both helicopter and fixed-wing systems), the SkyTEM system from Denmark was determined to be the best technology for this application. Whereas most airborne time domain electromagnetic systems were developed to find large, deep, highly conductive mineral deposits, the SkyTEM system is designed for groundwater exploration studies, an application similar to mine pool detection.

  14. Airborne coastal current survey system for difficult to access areas

    E-Print Network [OSTI]

    Pollock, Cheryl Elaine

    1994-01-01T23:59:59.000Z

    The development of an airborne current measurement system that can provide a near-synoptic view of near-bottom currents in extremely hostile wave and current environments is described. A helicopter is used as the support platform from which...

  15. airborne gamma-ray surveying: Topics by E-print Network

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

    airborne gamma-ray surveying First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Digital Logarithmic...

  16. airborne geophysical survey: Topics by E-print Network

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

    V; Vaalsta, Timo P; Li, Ju; Blair, David G 2011-01-01 12 A Virtual Excavation: Combining 3D Immersive Virtual Reality and Geophysical Surveying Computer Technologies and...

  17. airborne geophysical surveys: Topics by E-print Network

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

    V; Vaalsta, Timo P; Li, Ju; Blair, David G 2011-01-01 12 A Virtual Excavation: Combining 3D Immersive Virtual Reality and Geophysical Surveying Computer Technologies and...

  18. Category:Airborne Gravity Survey | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:EzfeedflagBiomassSustainableCSLInformationMissouri:Catalyst2-M ProbeElectromagnetic

  19. First results from a marine controlled-source electromagnetic survey to detect gas hydrates offshore Oregon

    E-Print Network [OSTI]

    Key, Kerry

    First results from a marine controlled-source electromagnetic survey to detect gas hydrates 13 December 2005; accepted 19 December 2005; published 3 February 2006. [1] Submarine gas hydrate from a marine controlled-source electromagnetic survey to detect gas hydrates offshore Oregon, Geophys

  20. Airborne gamma-ray spectrometer and magnetometer survey: Susanville quadrangle, California. Final report

    SciTech Connect (OSTI)

    Not Available

    1981-05-01T23:59:59.000Z

    An airborne high sensitivity gamma-ray spectrometer and magnetometer survey was conducted over ten (10) areas over northern California and southwestern Oregon. These include the 2/sup 0/ x 1/sup 0/ NTMS quadrangles of Roseburg, Medford, Weed, Alturas, Redding, Susanville, Ukiah, and Chico along with the 1/sup 0/ x 2/sup 0/ areas of the Coos Bay quadrangle and the Crescent City/Eureka areas combined. This report discusses the results obtained over the Susanville, California, map area. Traverse lines were flown in an east-west direction at a line spacing of six (6) miles. Tie lines were flown north-south approximately eighteen (18) miles apart. A total of 16,880.5 line miles of geophysical data were acquired, compiled, and interpreted during the survey, of which 1642.8 line miles are in this quadrangle. The purpose of this study is to acquire and compile geologic and other information with which to assess the magnitude and distribution of uranium resources and to determine areas favorable for the occurrence of uranium in the United States.

  1. Airborne gamma-ray spectrometer and magnetometer survey, Medford Quadrangle Oregon. Final report

    SciTech Connect (OSTI)

    Not Available

    1981-04-01T23:59:59.000Z

    An airborne high sensitivity gamma-ray spectrometer and magnetometer survey was conducted over ten (10) areas over northern California and southwestern Oregon. These include the 2/sup 0/ x 1/sup 0/ NTMS quadrangles of Roseburg, Medford, Weed, Alturas, Redding, Susanville, Ukiah, and Chico along with the 1/sup 0/ x 2/sup 0/ areas of the Coos Bay quadrangle and the Crescent City/Eureka areas combined. This report discusses the results obtained over the Medford, Oregon, map area. Traverse lines were flown in an east-west direction at a line spacing of three miles. Tie lines were flown north-south approximately twelve miles apart. A total of 16,880.5 line miles of geophysical data were acquired, compiled, and interpreted during the survey, of which 2925 line miles are in this quadrangle. The purpose of this study is to acquire and compile geologic and other information with which to assess the magnitude and distribution of uranium resources and to determine areas favorable for the occurrence of uranium in the United States.

  2. Airborne gamma-ray spectrometer and magnetometer survey: Chico quadrangle, California. Final report

    SciTech Connect (OSTI)

    Not Available

    1981-05-01T23:59:59.000Z

    An airborne high sensitivity gamma-ray spectrometer and magnetometer survey was conducted over ten (10) areas over northern California and southwestern Oregon. These include the 2/sup 0/ x 1/sup 0/ NTMS quadrangles of Roseburg, Medford, Weed, Alturas, Redding, Susanville, Ukiah, and Chico along with the 1/sup 0/ x 2/sup 0/ areas of the Coos Bay quadrangle and the Crescent City/Eureka areas combined. This report discusses the results obtained over the Chico, California, map area. Traverse lines were flown in an east-west direction at a line spacing of three. Tie lines were flown north-south approximately twelve miles apart. A total of 16,880.5 line miles of geophysical data were acquired, compiled, and interpreted during the survey, of which 3026.4 line miles are in the quadrangle. The purpose of this study is to acquire and compile geologic and other information with which to assess the magnitude and distribution of uranium resources with which to assess the magnitude and distribution of uranium resources and to determine areas favorable for the occurrence of uranium in the United States.

  3. Airborne gamma-ray spectrometer and magnetometer survey, Roseburg Quadrangle, Oregon. Final report

    SciTech Connect (OSTI)

    Not Available

    1981-03-01T23:59:59.000Z

    An airborne high sensitivity gamma-ray spectrometer and magnetometer survey was conducted over ten (10) areas over northern California and southwestern Oregon. These include the 2/sup 0/ x 1/sup 0/ NTMS quadrangles of Roseburg, Medford, Weed, Alturas, Redding, Susanville, Ukiah, and Chico along with the 1/sup 0/ x 2/sup 0/ areas of the Coos Bay quadrangle and the Crescent City/Eureka areas combined. This report discusses the results obtained over the Roseburg, Oregon, map area. Traverse lines were flown in an east-west direction at a line spacing of six (6) miles. Tie lines were flown north-south approximately eighteen (18) miles apart. A total of 16,880.5 line miles of geophysical data were acquired, compiled, and interpreted during the survey, of which 1596 line miles are in this quadrangle. The purpose of this study is to acquire and compile geologic and other information with which to assess the magnitude and distribution of uranium resources and to determine areas favorable for the occurrence of uranium in the United States.

  4. Airborne Electromagnetic Survey At Chena Area (Erkan, Et. Al., 2008) | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1AMEE JumpAeroWindcapitalInformationChemicals Inc

  5. Survey of ambient electromagnetic and radio-frequency interference levels in nuclear power plants

    SciTech Connect (OSTI)

    Kercel, S.W.; Moore, M.R.; Blakeman, E.D.; Ewing, P.D.; Wood, R.T.

    1996-11-01T23:59:59.000Z

    This document reports the results of a survey of ambient electromagnetic conditions in representative nuclear power plants. The U.S. Nuclear Regulatory Commission (NRC) Office of Nuclear Regulatory Research engaged the Oak Ridge National Laboratory (ORNL) to perform these measurements to characterize the electromagnetic interference (EMI) and radio-frequency interference (RFI) levels that can be expected in nuclear power plant environments. This survey is the first of its kind, being based on long-term unattended observations. The data presented in this report were measured at eight different nuclear units and required 14 months to collect. A representative sampling of power plant conditions (reactor type, operating mode, site location) monitored over extended observation periods (up to 5 weeks) were selected to more completely determine the characteristic electromagnetic environment for nuclear power plants. Radiated electric fields were measured over the frequency range of 5 MHz to 8 GHz. Radiated magnetic fields and conducted EMI events were measured over the frequency range of 305 Hz to 5 MHz. Highest strength observations of the electromagnetic ambient environment across all measurement conditions at each site provide frequency-dependent profiles for EMI/RFI levels in nuclear power plants.

  6. E-Print Network 3.0 - airborne nitrogen load Sample Search Results

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

    airborne remote sensing surveys verify vegetation and land surface... radiometry Airborne remote sensing surveys Field Experiments Spatial Modeling ET Estimation 12;Integrated......

  7. Electromagnetic pulse (EMP) survey of the FEMA Region X Federal Regional Center, Bothell, Washington

    SciTech Connect (OSTI)

    Crutcher, R.I.; Buchanan, M.E.; Jones, R.W.

    1991-11-01T23:59:59.000Z

    The purpose of this report is to develop an engineering design package to protect the Federal Emergency Management Agency (FEMA) National Radio System (FNARS) facilities against the effects of high-altitude electromagnetic pulses (HEMPS). This report refers to the FEMA Federal Regional Center (FRC) in Bothell, Washington. It is highly probably that there will be a heavy dependence upon high-frequency (hf) radio communications for long-haul communications following a nuclear attack on the continental United States, should one occur. To maintain the viability of the FEMA hf radio network during such a situation, the FNARS facilities must take measures to protect against the effects of HEMP that are likely to be created in a nuclear confrontation. The equipment under stress has already been designed and built so that little opportunity exists for equipment design changes that could raise the threshold levels at which malfunctions occur. The solution must then be to reduce HEMP-induced stresses on the system by means of tailored retrofit hardening measures using commercial protection devices when available. If is the intent of this report to define the particular hardening measures that will minimize the susceptibility of the network components to HEMP effects. To the extent economically viable, protective actions have been recommended for implementation, along with necessary changes or additions, during the period of the FNARS upgrade program. This report addresses electromagnetic pulse (EMP) effects only, and disregards any condition in which radiation effects may be a factor. This report identifies the systems in the facility considered critical for emergency option. To identify the critical systems in the facility and the EMP coupling paths into these systems, an EMP survey of the facility was conducted. Results of the survey are presented along with recommendations for tailored retrofit hardening measures to be implemented to protect the facility from EMP.

  8. Electromagnetic Pulse (EMP) survey of the Louisiana State Emergency Operating Center, Baton Rouge, Louisiana

    SciTech Connect (OSTI)

    Crutcher, R.I.; Buchanan, M.E.; Jones, R.W.

    1989-08-01T23:59:59.000Z

    The purpose of this report is to develop an engineering design package to protect the federal Emergency Management Agency (FEMA) National Radio System (FNARS) facilities from the effects of high-altitude electromagnetic pulses (HEMP). This report refers to the Louisiana State Emergency Operating Center (EOC) in Baton Rouge, Louisiana. This report addresses electromagnetic pulse (EMP) effects only, and disregards any condition in which radiation effects may be a factor. It has been established that, except for the source region of a surface burst, EMP effects of high-altitude bursts are more severe than comparable detonations in either air or surface regions. Any system hardened to withstand the more extreme EMP environment will survive the less severe conditions. The threatening environment will therefore be limited to HEMP situations. 76 figs., 2 tabs.

  9. Implementing the Pecos River Watershed Protection Plan through a Heliborne Electromagnetic (EM) Survey: Final Report

    E-Print Network [OSTI]

    Gregory, L.; Sheng, Z.; Hassan, A.; McDonald, A.; Porter, A.

    2014-01-01T23:59:59.000Z

    , completing financial status reports, hosting the program website, developing the project final report, facilitating the acceptance of bids from companies capable of collecting heliborne electromagnetic (HEM) data, awarding the HEM contract, and ultimately..., and the contract was awarded in May 2013. SkyTEM was the company that provided the bid with the best value and met data collection requirements. As a part of the Pecos River WPP Implementation Project (TSSWCB 08-08), public meetings were held in the watershed...

  10. Astro2010 Decadal Survey Whitepaper: Coordinated Science in the Gravitational and Electromagnetic Skies

    E-Print Network [OSTI]

    Joshua S. Bloom; Daniel E. Holz; Scott A. Hughes; Kristen Menou; Allan Adams; Scott F. Anderson; Andy Becker; Geoffrey C. Bower; Niel Brandt; Bethany Cobb; Kem Cook; Alessandra Corsi; Stefano Covino; Derek Fox; Andrew Fruchter; Chris Fryer; Jonathan Grindlay; Dieter Hartmann; Zoltan Haiman; Bence Kocsis; Lynne Jones; Abraham Loeb; Szabolcs Marka; Brian Metzger; Ehud Nakar; Samaya Nissanke; Daniel A. Perley; Tsvi Piran; Dovi Poznanski; Tom Prince; Jeremy Schnittman; Alicia Soderberg; Michael Strauss; Peter S. Shawhan; David H. Shoemaker; Jonathan Sievers; Christopher Stubbs; Gianpiero Tagliaferri; Pietro Ubertini; Przemyslaw Wozniak

    2009-02-10T23:59:59.000Z

    It is widely expected that the coming decade will witness the first direct detection of gravitational waves (GWs). The ground-based LIGO and Virgo GW observatories are being upgraded to advanced sensitivity, and are expected to observe a significant binary merger rate. The launch of The Laser Interferometer Space Antenna (LISA) would extend the GW window to low frequencies, opening new vistas on dynamical processes involving massive (M >~ 10^5 M_Sun) black holes. GW events are likely to be accompanied by electromagnetic (EM) counterparts and, since information carried electromagnetically is complementary to that carried gravitationally, a great deal can be learned about an event and its environment if it becomes possible to measure both forms of radiation in concert. Measurements of this kind will mark the dawn of trans-spectral astrophysics, bridging two distinct spectral bands of information. The aim of this whitepaper is to articulate future directions in both theory and observation that are likely to impact broad astrophysical inquiries of general interest. What will EM observations reflect on the nature and diversity of GW sources? Can GW sources be exploited as complementary probes of cosmology? What cross-facility coordination will expand the science returns of gravitational and electromagnetic observations?

  11. Electromagnetic pulse (EMP) survey of the Idaho State Emergency Operating Center, Boise, Idaho

    SciTech Connect (OSTI)

    Crutcher, R.I.; Buchanan, M.E.; Jones, R.W.

    1992-02-01T23:59:59.000Z

    The purpose of this report is to develop an engineering design package to protect the Federal Emergency Management Agency (FEMA) National Radio System (FNARS) facilities from the effects of high- altitude electromagnetic pulses (HEMPs). This report was developed specifically for the Idaho State Emergency Operating Center (EOC) in Boise, Idaho. It is highly probable that there will be a heavy dependence upon high-frequency (hf) radio communications for long- haul communications following a nuclear attack on the continental United States, should one occur. To maintain the viability of the FEMA hf radio network during such a situation, steps must be taken to protect the FNARS facilities against the effects of HEMP that are likely to be created in a nuclear confrontation. The solution must than be to reduce HEMP-induced stresses on the system by means of tailored retrofit hardening measures using commercial protection devices when available. It is the intent of this report to define the particular hardening measures that will minimize the susceptibility of system components to HEMP effects. To the extent economically viable, protective actions have been recommended for implementation, along with necessary changes or additions, during the period of the FNARS upgrade program. This report addresses electromagnetic pulse (EMP) effects only and disregards any condition in which radiation effects may be a factor. It has been established that, except for the source region of a surface burst, EMP effects of high-altitude bursts are more severe than comparable detonations in either air or surface regions. Any system hardened to withstand the more extreme EMP environment will survive the less severe EMP conditions. The threatening environment will therefore be limited to HEMP situations.

  12. A 3D finite-element modelling investigation into optimal survey parameters and direct imaging for marine controlled-source electromagnetic surveys

    E-Print Network [OSTI]

    Lau, Ryan

    2007-09-17T23:59:59.000Z

    frequency electromagnetic signal into the sea and downwards into the seabed. A transmitter is typically towed behind a ship to various offsets at which time an electromagnetic field is emitted from the dipole. The primary electromagnetic (EM) energy... possible direct hydrocarbon indicator for deep-sea prospects using EM energy: Oil & Gas Journal 100, 19, 30-38. MacGregor, L., and Sinha, M., 2000, Use of marine controlled-source electromagnetic sounding sub-basalt exploration: Geophysical...

  13. Clean enough for industry? An airborne geophysical case study

    SciTech Connect (OSTI)

    Nyquist, J.E.; Beard, L.P.

    1996-02-01T23:59:59.000Z

    Data from two airborne geophysical surveys of the Department of Energy`s Oak Ridge Reservation (ORR) were extremely valuable in deciding whether a 1000-acre (400 hectare) parcel of the ORR should be released to the City of Oak Ridge for industrial development. Our findings, based on electromagnetic and magnetic data, were incorporated in the federally mandated Environmental Assessment Statement (EAS), and in general supported claims that this land was never used as a hazardous waste disposal site. We estimated the amount of iron required to produce each anomaly using a simple dipole model. All anomalies with equivalent sources greater than approximately 1000 kg of iron were checked in the field, and the source of all but one identified as either a bridge, reinforced concrete debris, or a similarly benign object. Additionally, some smaller anomalies (equivalent sources of roughly 500 kg) have been checked; thus far, these also have innocuous sources. Airborne video proved invaluable in identifying logging equipment as the source of some of these anomalies. Geologic noise may account for some of the remaining anomalies. Naturally occurring accumulations of magnetic minerals in the soil on the ORR have been shown to produce anomalies which, at a sensor height of 30 m, are comparable to the anomaly produced by about 500 kg of iron. By comparison, the electronic noise of the magnetic gradiometer, 0.01--0.02 nT/m, is equivalent to only about 50--100 kg of iron at a 30 m sensor height. The electromagnetic data, combined with field mapping of karst structures, provided evidence of a northeast-southwest striking conduit spanning the parcel. The possible existence of a karst conduit led the EAS authors to conclude that this is a ``sensitive hydrologic setting.`` We conclude that aerial geophysics is an extremely cost-effective, and efficient technique for screening large tracts of land for environmental characterization.

  14. Controlled Source Frequency-Domain Electromagnetics At Neal Hot...

    Open Energy Info (EERE)

    Source Frequency-Domain Electromagnetics Activity Date 2011 - 2011 Usefulness useful DOE-funding Unknown Exploration Basis Electromagnetic surveys were conducted to gain a better...

  15. Airborne Internet : market & opportunity

    E-Print Network [OSTI]

    Bhadouria, Anand

    2007-01-01T23:59:59.000Z

    The purpose of this thesis to evaluate the opportunity for service provider entry and of the airborne internet, to analyze the disruptive impact technology used by AirCell and AeroSat has had on the development of an ...

  16. Airborne wireless communication systems, airborne communication methods, and communication methods

    DOE Patents [OSTI]

    Deaton, Juan D. (Menan, ID); Schmitt, Michael J. (Idaho Falls, ID); Jones, Warren F. (Idaho Falls, ID)

    2011-12-13T23:59:59.000Z

    An airborne wireless communication system includes circuitry configured to access information describing a configuration of a terrestrial wireless communication base station that has become disabled. The terrestrial base station is configured to implement wireless communication between wireless devices located within a geographical area and a network when the terrestrial base station is not disabled. The circuitry is further configured, based on the information, to configure the airborne station to have the configuration of the terrestrial base station. An airborne communication method includes answering a 911 call from a terrestrial cellular wireless phone using an airborne wireless communication system.

  17. airborne sunphotometer airborne: Topics by E-print Network

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

    122 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  18. Autonomous Airborne Geomagnetic Surveying and Target Identification

    E-Print Network [OSTI]

    Washington at Seattle, University of

    Positioning System (GPS) technology, and sensors (video and infrared cameras, magnetometers) coupled and identification of magnetic anomalies are evaluated. A combination of a particle filter and a neural network Airspeed w Weight on particle x State of agent with respect to target z Sensor measurement Subscript t Time

  19. Autonomous Airborne Geomagnetic Surveying and Target Identification

    E-Print Network [OSTI]

    Lum, Christopher

    in miniaturized electronics, Global Positioning System (GPS) technology, and sensors (video and infrared cameras and identification of magnetic anomalies are evaluated. A combination of a particle filter and a neural network Airspeed w Weight on particle x State of agent with respect to target z Sensor measurement Subscript t Time

  20. Airborne Gravity Survey | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1AMEE JumpAeroWindcapitalInformationChemicals IncOpen

  1. Electromagnetic fasteners

    DOE Patents [OSTI]

    Crane, Randolph W.; Marts, Donna J.

    1994-11-01T23:59:59.000Z

    An electromagnetic fastener for manipulating objects in space uses the matic attraction of various metals. An end effector is attached to a robotic manipulating system having an electromagnet such that when current is supplied to the electromagnet, the object is drawn and affixed to the end effector, and when the current is withheld, the object is released. The object to be manipulated includes a multiplicity of ferromagnetic patches at various locations to provide multiple areas for the effector on the manipulator to become affixed to the object. The ferromagnetic patches are sized relative to the object's geometry and mass.

  2. Electromagnetic fasteners

    DOE Patents [OSTI]

    Crane, Randolph W. (Idaho Falls, ID); Marts, Donna J. (Idaho Falls, ID)

    1994-01-01T23:59:59.000Z

    An electromagnetic fastener for manipulating objects in space uses the matic attraction of various metals. An end effector is attached to a robotic manipulating system having an electromagnet such that when current is supplied to the electromagnet, the object is drawn and affixed to the end effector, and when the current is withheld, the object is released. The object to be manipulated includes a multiplicity of ferromagnetic patches at various locations to provide multiple areas for the effector on the manipulator to become affixed to the object. The ferromagnetic patches are sized relative to the object's geometry and mass.

  3. Modeling for Airborne Contamination

    SciTech Connect (OSTI)

    F.R. Faillace; Y. Yuan

    2000-08-31T23:59:59.000Z

    The objective of Modeling for Airborne Contamination (referred to from now on as ''this report'') is to provide a documented methodology, along with supporting information, for estimating the release, transport, and assessment of dose to workers from airborne radioactive contaminants within the Monitored Geologic Repository (MGR) subsurface during the pre-closure period. Specifically, this report provides engineers and scientists with methodologies for estimating how concentrations of contaminants might be distributed in the air and on the drift surfaces if released from waste packages inside the repository. This report also provides dose conversion factors for inhalation, air submersion, and ground exposure pathways used to derive doses to potentially exposed subsurface workers. The scope of this report is limited to radiological contaminants (particulate, volatile and gaseous) resulting from waste package leaks (if any) and surface contamination and their transport processes. Neutron activation of air, dust in the air and the rock walls of the drift during the preclosure time is not considered within the scope of this report. Any neutrons causing such activation are not themselves considered to be ''contaminants'' released from the waste package. This report: (1) Documents mathematical models and model parameters for evaluating airborne contaminant transport within the MGR subsurface; and (2) Provides tables of dose conversion factors for inhalation, air submersion, and ground exposure pathways for important radionuclides. The dose conversion factors for air submersion and ground exposure pathways are further limited to drift diameters of 7.62 m and 5.5 m, corresponding to the main and emplacement drifts, respectively. If the final repository design significantly deviates from these drift dimensions, the results in this report may require revision. The dose conversion factors are further derived by using concrete of sufficient thickness to simulate the drift walls. The gamma-ray scattering properties of concrete are sufficiently similar to those of the host rock and proposed insert material; use of concrete will have no significant impact on the conclusions. The information in this report is presented primarily for use in performing pre-closure radiological safety evaluations of radiological contaminants, but it may also be used to develop strategies for contaminant leak detection and monitoring in the MGR. Included in this report are the methods for determining the source terms and release fractions, and mathematical models and model parameters for contaminant transport and distribution within the repository. Various particle behavior mechanisms that affect the transport of contaminant are included. These particle behavior mechanisms include diffusion, settling, resuspension, agglomeration and other deposition mechanisms.

  4. Final Report DE-EE0005380: Assessment of Offshore Wind Farm Effects on Sea Surface, Subsurface and Airborne Electronic Systems

    SciTech Connect (OSTI)

    Ling, Hao [The University of Texas at Austin] [The University of Texas at Austin; Hamilton, Mark F. [The University of Texas at Austin Applied Research Laboratories] [The University of Texas at Austin Applied Research Laboratories; Bhalla, Rajan [Science Applications International Corporation] [Science Applications International Corporation; Brown, Walter E. [The University of Texas at Austin Applied Research Laboratories] [The University of Texas at Austin Applied Research Laboratories; Hay, Todd A. [The University of Texas at Austin Applied Research Laboratories] [The University of Texas at Austin Applied Research Laboratories; Whitelonis, Nicholas J. [The University of Texas at Austin] [The University of Texas at Austin; Yang, Shang-Te [The University of Texas at Austin] [The University of Texas at Austin; Naqvi, Aale R. [The University of Texas at Austin] [The University of Texas at Austin

    2013-09-30T23:59:59.000Z

    Offshore wind energy is a valuable resource that can provide a significant boost to the US renewable energy portfolio. A current constraint to the development of offshore wind farms is the potential for interference to be caused by large wind farms on existing electronic and acoustical equipment such as radar and sonar systems for surveillance, navigation and communications. The US Department of Energy funded this study as an objective assessment of possible interference to various types of equipment operating in the marine environment where offshore wind farms could be installed. The objective of this project was to conduct a baseline evaluation of electromagnetic and acoustical challenges to sea surface, subsurface and airborne electronic systems presented by offshore wind farms. To accomplish this goal, the following tasks were carried out: (1) survey electronic systems that can potentially be impacted by large offshore wind farms, and identify impact assessment studies and research and development activities both within and outside the US, (2) engage key stakeholders to identify their possible concerns and operating requirements, (3) conduct first-principle modeling on the interactions of electromagnetic signals with, and the radiation of underwater acoustic signals from, offshore wind farms to evaluate the effect of such interactions on electronic systems, and (4) provide impact assessments, recommend mitigation methods, prioritize future research directions, and disseminate project findings. This report provides a detailed description of the methodologies used to carry out the study, key findings of the study, and a list of recommendations derived based the findings.

  5. Airborne agent concentration analysis

    DOE Patents [OSTI]

    Gelbard, Fred

    2004-02-03T23:59:59.000Z

    A method and system for inferring airborne contaminant concentrations in rooms without contaminant sensors, based on data collected by contaminant sensors in other rooms of a building, using known airflow interconnectivity data. The method solves a least squares problem that minimizes the difference between measured and predicted contaminant sensor concentrations with respect to an unknown contaminant release time. Solutions are constrained to providing non-negative initial contaminant concentrations in all rooms. The method can be used to identify a near-optimal distribution of sensors within the building, when then number of available sensors is less than the total number of rooms. This is achieved by having a system-sensor matrix that is non-singular, and by selecting that distribution which yields the lowest condition number of all the distributions considered. The method can predict one or more contaminant initial release points from the collected data.

  6. Airborne Wind Turbine

    SciTech Connect (OSTI)

    None

    2010-09-01T23:59:59.000Z

    Broad Funding Opportunity Announcement Project: Makani Power is developing an Airborne Wind Turbine (AWT) that eliminates 90% of the mass of a conventional wind turbine and accesses a stronger, more consistent wind at altitudes of near 1,000 feet. At these altitudes, 85% of the country can offer viable wind resources compared to only 15% accessible with current technology. Additionally, the Makani Power wing can be economically deployed in deep offshore waters, opening up a resource which is 4 times greater than the entire U.S. electrical generation capacity. Makani Power has demonstrated the core technology, including autonomous launch, land, and power generation with an 8 meter wingspan, 20 kW prototype. At commercial scale, Makani Power aims to develop a 600 kW, 28 meter wingspan product capable of delivering energy at an unsubsidized cost competitive with coal, the current benchmark for low-cost power.

  7. Airborne Particulate Threat Assessment

    SciTech Connect (OSTI)

    Patrick Treado; Oksana Klueva; Jeffrey Beckstead

    2008-12-31T23:59:59.000Z

    Aerosol threat detection requires the ability to discern between threat agents and ambient background particulate matter (PM) encountered in the environment. To date, Raman imaging technology has been demonstrated as an effective strategy for the assessment of threat agents in the presence of specific, complex backgrounds. Expanding our understanding of the composition of ambient particulate matter background will improve the overall performance of Raman Chemical Imaging (RCI) detection strategies for the autonomous detection of airborne chemical and biological hazards. Improving RCI detection performance is strategic due to its potential to become a widely exploited detection approach by several U.S. government agencies. To improve the understanding of the ambient PM background with subsequent improvement in Raman threat detection capability, ChemImage undertook the Airborne Particulate Threat Assessment (APTA) Project in 2005-2008 through a collaborative effort with the National Energy Technology Laboratory (NETL), under cooperative agreement number DE-FC26-05NT42594. During Phase 1 of the program, a novel PM classification based on molecular composition was developed based on a comprehensive review of the scientific literature. In addition, testing protocols were developed for ambient PM characterization. A signature database was developed based on a variety of microanalytical techniques, including scanning electron microscopy, FT-IR microspectroscopy, optical microscopy, fluorescence and Raman chemical imaging techniques. An automated particle integrated collector and detector (APICD) prototype was developed for automated collection, deposition and detection of biothreat agents in background PM. During Phase 2 of the program, ChemImage continued to refine the understanding of ambient background composition. Additionally, ChemImage enhanced the APICD to provide improved autonomy, sensitivity and specificity. Deliverables included a Final Report detailing our findings and APICD Gen II subsystems for automated collection, deposition and detection of ambient particulate matter. Key findings from the APTA Program include: Ambient biological PM taxonomy; Demonstration of key subsystems needed for autonomous bioaerosol detection; System design; Efficient electrostatic collection; Automated bioagent recognition; Raman analysis performance validating Td<9 sec; Efficient collection surface regeneration; and Development of a quantitative bioaerosol defection model. The objective of the APTA program was to advance the state of our knowledge of ambient background PM composition. Operation of an automated aerosol detection system was enhanced by a more accurate assessment of background variability, especially for sensitive and specific sensing strategies like Raman detection that are background-limited in performance. Based on this improved knowledge of background, the overall threat detection performance of Raman sensors was improved.

  8. Signal processing for airborne bistatic radar 

    E-Print Network [OSTI]

    Ong, Kian P

    The major problem encountered by an airborne bistatic radar is the suppression of bistatic clutter. Unlike clutter echoes for a sidelooking airborne monostatic radar, bistatic clutter echoes are range dependent. Using ...

  9. Electromagnetic Reciprocity.

    SciTech Connect (OSTI)

    Aldridge, David F.

    2014-11-01T23:59:59.000Z

    A reciprocity theorem is an explicit mathematical relationship between two different wavefields that can exist within the same space - time configuration. Reciprocity theorems provi de the theoretical underpinning for mod ern full waveform inversion solutions, and also suggest practical strategies for speed ing up large - scale numerical modeling of geophysical datasets . In the present work, several previously - developed electromagnetic r eciprocity theorems are generalized to accommodate a broader range of medi um, source , and receiver types. Reciprocity relations enabling the interchange of various types of point sources and point receivers within a three - dimensional electromagnetic model are derived. Two numerical modeling algorithms in current use are successfully tested for adherence to reciprocity. Finally, the reciprocity theorem forms the point of departure for a lengthy derivation of electromagnetic Frechet derivatives. These mathe matical objects quantify the sensitivity of geophysical electromagnetic data to variatio ns in medium parameters, and thus constitute indispensable tools for solution of the full waveform inverse problem. ACKNOWLEDGEMENTS Sandia National Labor atories is a multi - program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the US Department of Energy's National Nuclear Security Administration under contract DE - AC04 - 94AL85000. Signif icant portions of the work reported herein were conducted under a Cooperative Research and Development Agreement (CRADA) between Sandia National Laboratories (SNL) and CARBO Ceramics Incorporated. The author acknowledges Mr. Chad Cannan and Mr. Terry Pa lisch of CARBO Ceramics, and Ms. Amy Halloran, manager of SNL's Geophysics and Atmospheric Sciences Department, for their interest in and encouragement of this work. Special thanks are due to Dr . Lewis C. Bartel ( recently retired from Sandia National Labo ratories and now a geophysical consultant ) and Dr. Chester J. Weiss (recently rejoined with Sandia National Laboratories) for many stimulating (and reciprocal!) discussions regar ding the topic at hand.

  10. Lightning Strikes on Airborne Grounded Systems 

    E-Print Network [OSTI]

    Malinga, Gilbert Aporu

    2014-10-13T23:59:59.000Z

    , NOAA, 2014. ........................................................................................ 4 Fig. 1-2 Schematic illustrating airborne wind turbines based on the concept of a tethered buoyant blimp (Altaeros, 2014... of airborne structures of varied diameter. ............................... 73 Table 4-3 Surface electrical charge, tQ induced on cylindrical structures of varied geometry, representing an airborne wind turbine, as a function of elevation...

  11. Conventional and synthetic aperature processing for airborne ground penetrating radar

    SciTech Connect (OSTI)

    Cameron, R.M. [Airborne Environmental Surveys, Santa Maria, CA (United States); Simkins, W.L.; Brown, R.D. [MSB Technologies, Inc., Rome, NY (United States)

    1994-12-31T23:59:59.000Z

    For the past four years Airborne Environmental Surveys (AES), a Division of Era Aviation, Inc. has used unique and patented airborne Frequency-Modulated, Continuous Wave (FM-CW) radars and processes for detecting and mapping subsurface phenomena. Primary application has focused on the detection of man-made objects in landfills, hazardous waste sites (some of which contain unexploded ordinance), and subsurface plumes of refined free-floating hydrocarbons. Recently, MSB Technologies, Inc. (MSB) has developed a form of synthetic aperture radar processing (SAR), called GPSAR{trademark}, that is tailored especially for the AES radars. Used as an adjunct to more conventional airborne ground-penetrating radar data processing techniques, GPSAR takes advantage of the radars` coherent transmission and produces imagery that is better focused and more accurate in determining an object`s range and true depth. This paper describes the iterative stages of data processing and analysis used with the radars and shows the added advantages that GPSAR processing offers.

  12. airborne aura big: Topics by E-print Network

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

    Computational Acoustics, Vol. 9, No. 3 (2001) 1215-1225 c IMACS AIRBORNE ACOUSTICS October 1999 Revised 16 April 2000 A recently developed theoretical model of the airborne...

  13. airborne thermal magnetic: Topics by E-print Network

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

    Computational Acoustics, Vol. 9, No. 3 (2001) 1215-1225 c IMACS AIRBORNE ACOUSTICS October 1999 Revised 16 April 2000 A recently developed theoretical model of the airborne...

  14. MSIV leakage airborne iodine transport

    SciTech Connect (OSTI)

    Cline, J.E. (Cline Associates Inc., Rockville, MD (United States))

    1993-01-01T23:59:59.000Z

    Gaseous iodine deposits on surfaces exposed to vapors. Basic chemical and physical principles predict this behavior, and several laboratory and in-plant measurements demonstrate the characteristic. An empirical model was developed that describes the deposition, resuspension, and transformation of airborne radioiodine molecular species as a stream containing these forms moves along its pathway. The model uses a data base of measured values of deposition and resuspension rates in its application and describes the conversion of the more reactive inorganic iodine species I[sub 2] to the less reactive organic species CH[sub 3]I as the iodine deposits and resuspends along the path. It also considers radioactive decay and chemical surface bonding during residence on surfaces. For the 8-day [sup 131]I, decay during the airborne portion of the transport is negligible. Verification of the model included measurement tests of long gaseous-activity sampling lines of different diameters, operated at different flow rates and stream temperatures. The model was applied to the streams at a boiling water reactor nuclear power plant to describe the transport through leaking main steam isolation valves (MSIVs), following a loss-of-coolant accident.

  15. Investigation of electromagnetic welding

    E-Print Network [OSTI]

    Pressl, Daniel G. (Daniel Gerd)

    2009-01-01T23:59:59.000Z

    We propose several methodologies to study and optimize the electromagnetic process for Electromagnetic Forming (EMF) and Welding (EMW), thereby lowering the necessary process energy up to a factor of three and lengthening ...

  16. Detection of near-surface anisotropy in a weathered metamorphic schist using time-domain electromagnetics

    E-Print Network [OSTI]

    Collins, Jamie Lynne

    2004-11-15T23:59:59.000Z

    Controlled-source, azimuthal, time-domain, electromagnetic (TDEM) surveys were conducted over a schist formation with uniformly striking, nearly vertical foliation. Direct current electrical resistivity and seismic refraction surveys provided...

  17. Theory of electromagnetic fields

    E-Print Network [OSTI]

    Wolski, Andrzej

    2011-01-01T23:59:59.000Z

    We discuss the theory of electromagnetic fields, with an emphasis on aspects relevant to radiofrequency systems in particle accelerators. We begin by reviewing Maxwell's equations and their physical significance. We show that in free space, there are solutions to Maxwell's equations representing the propagation of electromagnetic fields as waves. We introduce electromagnetic potentials, and show how they can be used to simplify the calculation of the fields in the presence of sources. We derive Poynting's theorem, which leads to expressions for the energy density and energy flux in an electromagnetic field. We discuss the properties of electromagnetic waves in cavities, waveguides and transmission lines.

  18. Chemistry of airborne particles from metallurgical processing

    E-Print Network [OSTI]

    Jenkins, Neil Travis, 1973-

    2003-01-01T23:59:59.000Z

    Airborne particles fall into one of three size ranges. The nucleation range consists of nanoparticles created from vapor atom collisions. The decisive parameter for particle size and composition is the supercooling of the ...

  19. Principles for Sampling Airborne Radioactivity from Stacks

    SciTech Connect (OSTI)

    Glissmeyer, John A.

    2010-10-18T23:59:59.000Z

    This book chapter describes the special processes involved in sampling the airborne effluents from nuclear faciities. The title of the book is Radioactive Air Sampling Methods. The abstract for this chapter was cleared as PNNL-SA-45941.

  20. Airborne Gamma-Spectrometry in Switzerland

    SciTech Connect (OSTI)

    Butterweck, Gernot [Paul Scherrer Institut, 5232 Villigen PSI (Switzerland); Bucher, Benno [Swiss Federal Nuclear Safety Inspectorate, 5232 Villigen HSK (Switzerland); Rybach, Ladislaus [Swiss Federal Institute of Technology Zurich, Institute of Geophysics, 8093 Zurich (Switzerland)

    2008-08-07T23:59:59.000Z

    Airborne gamma-spectrometry is able to obtain fast radiological information over large areas. The airborne gamma-spectrometry unit deployed in Switzerland by the Swiss National Emergency Operations Centre (NEOC) consists of a Swiss army Super Puma helicopter equipped with four NaI-Detectors with a total volume of 17 liters, associated electronics and a real-time data evaluation and mapping unit developed by the Swiss Federal Institute of Technology (ETH) and the Paul Scherrer Institut (PSI). The operational readiness of the airborne gamma-spectrometry system is validated in annual exercises of one week duration. Data from 2005 and 2006 exercises are represented in maps of {sup 137}Cs activity concentration for two towns located in southern and western Switzerland. An indicator of man-made radioactivity (MMGC ratio) is demonstrated for an area with four different types of nuclear installations. The intercomparison between airborne gamma-spectrometry and ground measurements showed good agreement between both methods.

  1. airborne gamma survey: Topics by E-print Network

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

    ADC dynamic range, because the low-energy pulse signal has a larger gain than the high-energy pulse signal. The spectrometer can clearly distinguish the photopeaks at 239, 352,...

  2. airborne unmanned survey: Topics by E-print Network

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

    25 Next Page Last Page Topic Index 81 Intelligent Unmanned Explorer for Deep Space Exploration CERN Preprints Summary: asteroids or comets have received remarkable attention in...

  3. airborne gravity survey: Topics by E-print Network

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

    Gravity CERN Preprints Summary: Modified gravity theories may provide an alternative to dark energy to explain cosmic acceleration. We argue that the observational program...

  4. PIA - Radioactive Airborne Contamination Survey | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial602 1,39732onMakeEducation Programs Business EnclavePositive Pay and

  5. Implementation of the FAA research and development electromagnetic database

    SciTech Connect (OSTI)

    McDowall, R.L. (Computer Resource Management, Inc., Atlantic City, NJ (USA)); Grush, D.J.; Cook, D.M. (EG and G Idaho, Inc., Idaho Falls, ID (USA)); Glynn, M.S. (Federal Aviation Administration, Atlantic City, NJ (USA). Technical Center)

    1991-01-01T23:59:59.000Z

    The Idaho National Engineering Laboratory (INEL) has been assisting the Federal Aviation Administration (FAA) in developing a database of information about lightning. The FAA Research and Development Electromagnetic Database (FRED) will ultimately contain data from a variety of airborne and groundbased lightning research projects. This paper contains an outline of the data currently available in FRED. It also lists the data sources which the FAA intends to incorporate into FRED. In addition, it describes how the researcher may access and use the FRED menu system. 2 refs., 12 figs.

  6. Active airborne contamination control using electrophoresis

    SciTech Connect (OSTI)

    Veatch, B.D.

    1994-06-01T23:59:59.000Z

    In spite of our best efforts, radioactive airborne contamination continues to be a formidable problem at many of the Department of Energy (DOE) weapons complex sites. For workers that must enter areas with high levels of airborne contamination, personnel protective equipment (PPE) can become highly restrictive, greatly diminishing productivity. Rather than require even more restrictive PPE for personnel in some situations, the Rocky Flats Plant (RFP) is actively researching and developing methods to aggressively combat airborne contamination hazards using electrophoretic technology. With appropriate equipment, airborne particulates can be effectively removed and collected for disposal in one simple process. The equipment needed to implement electrophoresis is relatively inexpensive, highly reliable, and very compact. Once airborne contamination levels are reduced, less PPE is required and a significant cost savings may be realized through decreased waste and maximized productivity. Preliminary ``cold,`` or non-radioactive, testing results at the RFP have shown the technology to be effective on a reasonable scale, with several potential benefits and an abundance of applications.

  7. Tunability enhanced electromagnetic wiggler

    DOE Patents [OSTI]

    Schlueter, Ross D. (Albany, CA); Deis, Gary A. (Livermore, CA)

    1992-01-01T23:59:59.000Z

    The invention discloses a wiggler used in synchrotron radiation sources and free electron lasers, where each pole is surrounded by at least two electromagnetic coils. The electromagnetic coils are energized with different amounts of current to provide a wide tunable range of the on-axis magnetic flux density, while preventing magnetic saturation of the poles.

  8. CHARACTERIZATION OF LAND DEGRADATION PROCESSES USING AIRBORNE LASER SCANNING

    E-Print Network [OSTI]

    Marco, Shmuel "Shmulik"

    CHARACTERIZATION OF LAND DEGRADATION PROCESSES USING AIRBORNE LASER SCANNING Sagi Filin1 , Amit@tau.ac.il Commission VIII/8 KEY WORDS: Airborne laser scanning, Geomorphology, Dead Sea, Land Degradation, Sinkholes of collapse sinkholes in high resolution using airborne laser scanning technology. As a study case, we use

  9. Using Airborne Geophysics to Improve the Management of Produced Water from Coal Bed Natural Gas Extraction in the Powder River Basin

    SciTech Connect (OSTI)

    Sams, J.I.; Lipinski, B.A.; Hammack, R.W.; Veloski, G.A.; Ackman, T.E.; Harbert, W.P. (Univ. of Pittsburgh)

    2005-05-01T23:59:59.000Z

    The Powder River Basin (PRB) of Wyoming and Montana has seen a boom in drilling for coalbed natural gas (CBNG), the natural gas contained in coal seams. Large quantities of water are coproduced during the extraction process. The water is currently managed by land application (irrigation), returned to shallow groundwater aquifers via infiltration basins, directly discharged to ephemeral or perennial streams, or injected into the deep subsurface via injection wells. At present, there are over 28,000 CBNG wells permitted or drilled in the PRB and it is estimated that another 50,000 to 100,000 new wells will be drilled in the future. Produced water management is a major challenge to the oil and gas industry as well as federal and state regulators. The purpose of this study was to evaluate the use of airborne electromagnetic (AEM) methods for the large-scale mapping of vadose zone properties. The base maps derived from the AEM data show the location of conductive anomalies within the vadose zone. These conductive anomalies have been identified as conditions related to soil properties, geologic features, saturated areas, and seepage zones. In the PRB, the data can be used to identify suitable locations for constructing impoundments in areas that avoid highly conductive soils where infiltrating water may leach salts through the vadose zone and into shallow aquifers. Hydrologic changes within the vadose zone were evaluated by completing an AEM survey in 2003 and 2004 over two coincident spatial areas. The data were analyzed to determine statistical relationships between the data sets, in particular data outliers which may represent areas of significant change between each year. Some outliers plot near areas of CBNG development. Ultimately, it is hoped that the information from these surveys will identify cost effective treatment or disposal options for produced water that address both production and environmental issues.

  10. Electromagnetic rotational actuation.

    SciTech Connect (OSTI)

    Hogan, Alexander Lee

    2010-08-01T23:59:59.000Z

    There are many applications that need a meso-scale rotational actuator. These applications have been left by the wayside because of the lack of actuation at this scale. Sandia National Laboratories has many unique fabrication technologies that could be used to create an electromagnetic actuator at this scale. There are also many designs to be explored. In this internship exploration of the designs and fabrications technologies to find an inexpensive design that can be used for prototyping the electromagnetic rotational actuator.

  11. Helicopter magnetic survey conducted to locate wells

    SciTech Connect (OSTI)

    Veloski, G.A.; Hammack, R.W.; Stamp, V. (Rocky Mountain Oilfield Testing Center); Hall, R. (Rocky Mountain Oilfield Testing Center); Colina, K. (Rocky Mountain Oilfield Testing Center)

    2008-07-01T23:59:59.000Z

    A helicopter magnetic survey was conducted in August 2007 over 15.6 sq mi at the Naval Petroleum Reserve No. 3’s (NPR-3) Teapot Dome Field near Casper, Wyoming. The survey’s purpose was to accurately locate wells drilled there during more than 90 years of continuous oilfield operation. The survey was conducted at low altitude and with closely spaced flight lines to improve the detection of wells with weak magnetic response and to increase the resolution of closely spaced wells. The survey was in preparation for a planned CO2 flood for EOR, which requires a complete well inventory with accurate locations for all existing wells. The magnetic survey was intended to locate wells missing from the well database and to provide accurate locations for all wells. The ability of the helicopter magnetic survey to accurately locate wells was accomplished by comparing airborne well picks with well locations from an intense ground search of a small test area.

  12. Electromagnetic properties of baryons

    SciTech Connect (OSTI)

    Ledwig, T.; Pascalutsa, V.; Vanderhaeghen, M. [Institut fuer Kernphysik, Universitaet Mainz, D-55099 Mainz (Germany); Martin-Camalich, J. [Departamento de Fisica Teorica and IFIC, Universidad de Valencia-CSIC, Spain and Department of Physics and Astronomy, University of Sussex, BN1 9Qh, Brighton (United Kingdom)

    2011-10-21T23:59:59.000Z

    We discuss the chiral behavior of the nucleon and {Delta}(1232) electromagnetic properties within the framework of a SU(2) covariant baryon chiral perturbation theory. Our one-loop calculation is complete to the order p{sup 3} and p{sup 4}/{Delta} with {Delta} as the {Delta}(1232)-nucleon energy gap. We show that the magnetic moment of a resonance can be defined by the linear energy shift only when an additional relation between the involved masses and the applied magnetic field strength is fulfilled. Singularities and cusps in the pion mass dependence of the {Delta}(1232) electromagnetic moments reflect a non-fulfillment. We show results for the pion mass dependence of the nucleon iso-vector electromagnetic quantities and present preliminary results for finite volume effects on the iso-vector anomalous magnetic moment.

  13. Analyzing Options for Airborne Emergency Wireless Communications

    SciTech Connect (OSTI)

    Michael Schmitt; Juan Deaton; Curt Papke; Shane Cherry

    2008-03-01T23:59:59.000Z

    In the event of large-scale natural or manmade catastrophic events, access to reliable and enduring commercial communication systems is critical. Hurricane Katrina provided a recent example of the need to ensure communications during a national emergency. To ensure that communication demands are met during these critical times, Idaho National Laboratory (INL) under the guidance of United States Strategic Command has studied infrastructure issues, concerns, and vulnerabilities associated with an airborne wireless communications capability. Such a capability could provide emergency wireless communications until public/commercial nodes can be systematically restored. This report focuses on the airborne cellular restoration concept; analyzing basic infrastructure requirements; identifying related infrastructure issues, concerns, and vulnerabilities and offers recommended solutions.

  14. Air Chemistry in the Gulf of Mexico Oil Spill Area NOAA WP-3D Airborne Chemical Laboratory Flights of 8 and 10 June 2010

    E-Print Network [OSTI]

    Air Chemistry in the Gulf of Mexico Oil Spill Area NOAA WP-3D Airborne Chemical Laboratory Flights of Mexico near the spill site. At the time it was called on for this mission, the NOAA WP-3D aircraft and extensive survey of atmospheric loadings of hydrocarbon and other organic species air pollution in the Gulf

  15. Airborne Tactical Free-Electron Laser

    SciTech Connect (OSTI)

    Roy Whitney; George Neil

    2007-02-01T23:59:59.000Z

    The goal of 100 kilowatts (kW) of directed energy from an airborne tactical platform has proved challenging due to the size and weight of most of the options that have been considered. However, recent advances in Free-Electron Lasers appear to offer a solution along with significant tactical advantages: a nearly unlimited magazine, time structures for periods from milliseconds to hours, radar like functionality, and the choice of the wavelength of light that best meets mission requirements. For an Airborne Tactical Free-Electron Laser (ATFEL) on a platforms such as a Lockheed C-130J-30 and airships, the two most challenging requirements, weight and size, can be met by generating the light at a higher harmonic, aggressively managing magnet weights, managing cryogenic heat loads using recent SRF R&D results, and using FEL super compact design concepts that greatly reduce the number of components. The initial R&D roadmap for achieving an ATFEL is provided in this paper. Performing this R&D is expected to further reduce the weight, size and power requirements for the FELs the Navy is currently developing for shipboard applications, as well as providing performance enhancements for the strategic airborne MW class FELs. The 100 kW ATFEL with its tactical advantages may prove sufficiently attractive for early advancement in the queue of deployed FELs.

  16. Quantifying forested stands with the pulsed airborne laser profiler

    E-Print Network [OSTI]

    Whatley, Michael Craig

    1986-01-01T23:59:59.000Z

    ) red H. Smeins (Member) Peter T Sprinz (Member) J ~ (Head aries Lee f Departmen ) May 1986 ABSTRACT Quantifying Forested Stands with the Pulsed Airborne Laser Profiler. (May 1986) Michael Craig Whatley, B. S. , Texas A&M University...; Chairman of Advisory Committee: Dr. Robert C. Maggio The use of airborne laser technology to enumerate forested stands was explored. A ground-based simulation laser, mimicing the pulsed airborne laser profiler (PALP) was used to quantify the PALP...

  17. ccpi-airborne_r2 | netl.doe.gov

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

    2 Industrial Carbon Capture and Storage Clean Coal Power Initiative Power Plant Improvement Initiative Clean Coal Technology Demonstration Program FutureGen AIRBORNE PROCESS(tm)...

  18. airborne science program: Topics by E-print Network

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

    A&M University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE August 1982 Major Subject: Nuclear Engineering AIRBORNE RADIOACTIVE MATERIAL...

  19. airborne oceanographic lidar: Topics by E-print Network

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

    Channels Landslides Spatial Cognition The emergence of airborne lidar data cognition and perception, we also explore the notion that the ongoing use of lidar enables...

  20. airborne aura lidar: Topics by E-print Network

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

    Channels Landslides Spatial Cognition The emergence of airborne lidar data cognition and perception, we also explore the notion that the ongoing use of lidar enables...

  1. airborne particulate threat: Topics by E-print Network

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

    particulate pollution in Beijing. Overall, coal burning and the traffic exhausts, plus mineral aerosol and it could provide the basic information in controlling the air-borne...

  2. airborne fungi particulate: Topics by E-print Network

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

    particulate pollution in Beijing. Overall, coal burning and the traffic exhausts, plus mineral aerosol and it could provide the basic information in controlling the air-borne...

  3. airborne particulates european: Topics by E-print Network

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

    particulate pollution in Beijing. Overall, coal burning and the traffic exhausts, plus mineral aerosol and it could provide the basic information in controlling the air-borne...

  4. airborne aerosol prediction: Topics by E-print Network

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

    modeling, radar, remote sensing, simulator, training. Dr. George; L. Bair; Camber Corporation 44 AIRBORNE MEASUREMENTS OF OZONE AND REACTIVE NITROGEN COMPOUNDS IN TAMPA,...

  5. airborne em system: Topics by E-print Network

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

    191 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  6. airborne radioactivity levels: Topics by E-print Network

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

    Bronchial model; Radiation 1. Introduction Inhalation of airborne short-lived radon progeny in the indoor and outdoor environment yields the greatest amount of natural...

  7. airborne rhinovirus detection: Topics by E-print Network

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

    181 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  8. airborne releases estimativa: Topics by E-print Network

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

    172 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  9. airborne radioactive materials: Topics by E-print Network

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

    Bronchial model; Radiation 1. Introduction Inhalation of airborne short-lived radon progeny in the indoor and outdoor environment yields the greatest amount of natural...

  10. airborne acidity estimates: Topics by E-print Network

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

    169 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  11. airborne mycobacterium parafortuitum: Topics by E-print Network

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

    223 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  12. airborne allergens assessing: Topics by E-print Network

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

    183 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  13. airborne chemical emissions: Topics by E-print Network

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

    187 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  14. airborne sunphotometer measurements: Topics by E-print Network

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

    66 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  15. airborne pollutant concentrations: Topics by E-print Network

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

    5 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  16. airborne research canister: Topics by E-print Network

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

    159 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  17. airborne penicillium cfu: Topics by E-print Network

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

    151 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  18. airborne stachybotrys chartarum: Topics by E-print Network

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

    125 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  19. airborne separation assistance: Topics by E-print Network

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

    15 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  20. airborne particles: Topics by E-print Network

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

    153 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  1. airborne effluent control: Topics by E-print Network

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

    175 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  2. airborne gammaspectrometric systems: Topics by E-print Network

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

    166 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  3. airborne laser swath: Topics by E-print Network

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

    191 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  4. airborne radioactive contamination: Topics by E-print Network

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

    Bronchial model; Radiation 1. Introduction Inhalation of airborne short-lived radon progeny in the indoor and outdoor environment yields the greatest amount of natural...

  5. airborne aspergillus fumigatus: Topics by E-print Network

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

    176 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  6. airborne refueling demonstration: Topics by E-print Network

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

    158 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  7. airborne nanoparticle exposures: Topics by E-print Network

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

    182 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  8. airborne compositae dermatitis: Topics by E-print Network

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

    150 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  9. airborne organic acids: Topics by E-print Network

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

    192 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  10. airborne toxic metals: Topics by E-print Network

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

    187 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  11. airborne resistivity techniques: Topics by E-print Network

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

    152 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  12. airborne radiometric measurements: Topics by E-print Network

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

    105 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  13. airborne mixtures part: Topics by E-print Network

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

    P 18 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  14. airborne radionuclide monitoring: Topics by E-print Network

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

    188 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  15. airborne laser altimeter: Topics by E-print Network

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

    211 Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with Biology and Medicine Websites Summary:...

  16. Study and Simulation of Remote Sensing System: COMPACT Airborne Spectral Sensor (COMPASS)

    E-Print Network [OSTI]

    Salvaggio, Carl

    1 Study and Simulation of Remote Sensing System: COMPACT Airborne Spectral Sensor (COMPASS) Paper............................................................................................ 5 COMPACT Airborne Spectral Sensor (COMPASS............................................................................................... 9 (FOUO) COMPASS Megacollect Data

  17. airborne experimental test-bed: Topics by E-print Network

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

    Acoustics, Vol. 9, No. 3 (2001) 1215-1225 c IMACS AIRBORNE ACOUSTICS October 1999 Revised 16 April 2000 A recently developed theoretical model of the airborne acoustic...

  18. Ris-R-1462(EN) Airborne contamination in the indoor

    E-Print Network [OSTI]

    Risø-R-1462(EN) Airborne contamination in the indoor environment and its implications for dose K. Byskov, X.L. Hou, H. Prip, S.K. Olsen, T. Roed Title: Airborne contamination in the indoor environment of contaminant aerosol were examined, and since the previous measurements had indicated that elemental iodine

  19. Automatic Extraction of Cartographic Information from Airborne Interferometric SAR Data

    E-Print Network [OSTI]

    Mayer, Helmut A.

    Automatic Extraction of Cartographic Information from Airborne Interferometric SAR Data Reinhold cartographic feature extraction by the airborne AeS--1 instrument is presented. We extract regions corresponding to cartographic features for the classes built--up area, forest, water and open area. Water

  20. airborne gamma ray: Topics by E-print Network

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

    airborne gamma ray First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Digital Logarithmic Airborne Gamma...

  1. Aerial gamma ray and magnetic survey: Mississippi and Florida airborne survey, Russellville quadrangle, Arkansas

    SciTech Connect (OSTI)

    Not Available

    1980-09-01T23:59:59.000Z

    The Russellville quadrangle in north central Arkansas overlies thick Paleozoic sediments of the Arkoma Basin. These Paleozoics dominate surface exposure except where covered by Quaternary alluvial materials. Examination of available literature shows no known uranium deposits (or occurrences) within the quadrangle. Eighty-eight groups of uranium samples were defined as anomalies and are discussed briefly. None were considered significant, and most appeared to be of cultural origin. Magnetic data show character that suggest structural and/or lithologic complexity, but imply relatively deep-seated sources.

  2. Lightning Strikes on Airborne Grounded Systems

    E-Print Network [OSTI]

    Malinga, Gilbert Aporu

    2014-10-13T23:59:59.000Z

    LIST OF FIGURES Page Fig. 1-1 Histogram of the average wind speed over a 10 year period at an elevation of a) sH ? 100 m and b) sH ? 600 m, above the mean water level at Montauk, New York. Wind data accessed from the National Buoy Data Center.... The destructive power of lightning discharges to both land-based and airborne systems that cannot adequately dissipate large impulses of energy is well documented (Miyake et al., 1990; Sorensen et al., 1998; Uman and Rakov, 2003). Lightning discharges can...

  3. Banded electromagnetic stator core

    DOE Patents [OSTI]

    Fanning, A.W.; Gonzales, A.A.; Patel, M.R.; Olich, E.E.

    1994-04-05T23:59:59.000Z

    A stator core for an electromagnetic pump includes a plurality of circumferentially adjoining groups of flat laminations disposed about a common centerline axis and collectively defining a central bore and a discontinuous outer perimeter, with adjacent groups diverging radially outwardly to form V-shaped gaps. An annular band surrounds the groups and is predeterminedly tensioned to clamp together the laminations, and has a predetermined flexibility in a radial direction to form substantially straight bridge sections between the adjacent groups. 5 figures.

  4. Banded electromagnetic stator core

    DOE Patents [OSTI]

    Fanning, A.W.; Gonzales, A.A.; Patel, M.R.; Olich, E.E.

    1996-06-11T23:59:59.000Z

    A stator core for an electromagnetic pump includes a plurality of circumferentially adjoining groups of flat laminations disposed about a common centerline axis and collectively defining a central bore and a discontinuous outer perimeter, with adjacent groups diverging radially outwardly to form V-shaped gaps. An annular band surrounds the groups and is predeterminedly tensioned to clamp together the laminations, and has a predetermined flexibility in a radial direction to form substantially straight bridge sections between the adjacent groups. 5 figs.

  5. K-BAND RADIO FREQUENCY INTERFERENCE SURVEY OF SOUTHEASTERN MICHIGAN

    E-Print Network [OSTI]

    Ruf, Christopher

    K-BAND RADIO FREQUENCY INTERFERENCE SURVEY OF SOUTHEASTERN MICHIGAN Shannon Curry1 , Michael Ahlers University of Michigan 2455 Hayward St. Ann Arbor, MI 48109-2143 USA cruf@umich.edu 2 DTU Space Technical resolution. A K-Band airborne version has been built and flown across southeast Michigan. A kurtosis detector

  6. AIRBORNE, OPTICAL REMOTE SENSING OF METHANE AND ETHANE FOR NATURAL GAS PIPELINE LEAK DETECTION

    SciTech Connect (OSTI)

    Jerry Myers

    2003-05-13T23:59:59.000Z

    Ophir Corporation was awarded a contract by the U. S. Department of Energy, National Energy Technology Laboratory under the Project Title ''Airborne, Optical Remote Sensing of Methane and Ethane for Natural Gas Pipeline Leak Detection'' on October 14, 2002. This six-month technical report summarizes the progress for each of the proposed tasks, discusses project concerns, and outlines near-term goals. Ophir has completed a data survey of two major natural gas pipeline companies on the design requirements for an airborne, optical remote sensor. The results of this survey are disclosed in this report. A substantial amount of time was spent on modeling the expected optical signal at the receiver at different absorption wavelengths, and determining the impact of noise sources such as solar background, signal shot noise, and electronic noise on methane and ethane gas detection. Based upon the signal to noise modeling and industry input, Ophir finalized the design requirements for the airborne sensor, and released the critical sensor light source design requirements to qualified vendors. Responses from the vendors indicated that the light source was not commercially available, and will require a research and development effort to produce. Three vendors have responded positively with proposed design solutions. Ophir has decided to conduct short path optical laboratory experiments to verify the existence of methane and absorption at the specified wavelength, prior to proceeding with the light source selection. Techniques to eliminate common mode noise were also evaluated during the laboratory tests. Finally, Ophir has included a summary of the potential concerns for project success and has established future goals.

  7. Coherent hybrid electromagnetic field imaging

    DOE Patents [OSTI]

    Cooke, Bradly J. (Jemez Springs, NM); Guenther, David C. (Los Alamos, NM)

    2008-08-26T23:59:59.000Z

    An apparatus and corresponding method for coherent hybrid electromagnetic field imaging of a target, where an energy source is used to generate a propagating electromagnetic beam, an electromagnetic beam splitting means to split the beam into two or more coherently matched beams of about equal amplitude, and where the spatial and temporal self-coherence between each two or more coherently matched beams is preserved. Two or more differential modulation means are employed to modulate each two or more coherently matched beams with a time-varying polarization, frequency, phase, and amplitude signal. An electromagnetic beam combining means is used to coherently combine said two or more coherently matched beams into a coherent electromagnetic beam. One or more electromagnetic beam controlling means are used for collimating, guiding, or focusing the coherent electromagnetic beam. One or more apertures are used for transmitting and receiving the coherent electromagnetic beam to and from the target. A receiver is used that is capable of square-law detection of the coherent electromagnetic beam. A waveform generator is used that is capable of generation and control of time-varying polarization, frequency, phase, or amplitude modulation waveforms and sequences. A means of synchronizing time varying waveform is used between the energy source and the receiver. Finally, a means of displaying the images created by the interaction of the coherent electromagnetic beam with target is employed.

  8. Asthmatic responses to airborne acid aerosols

    SciTech Connect (OSTI)

    Ostro, B.D.; Lipsett, M.J.; Wiener, M.B.; Selner, J.C. (California Department of Health Services, Berkeley (USA))

    1991-06-01T23:59:59.000Z

    Controlled exposure studies suggest that asthmatics may be more sensitive to the respiratory effects of acidic aerosols than individuals without asthma. This study investigates whether acidic aerosols and other air pollutants are associated with respiratory symptoms in free-living asthmatics. Daily concentrations of hydrogen ion (H+), nitric acid, fine particulates, sulfates and nitrates were obtained during an intensive air monitoring effort in Denver, Colorado, in the winter of 1987-88. A panel of 207 asthmatics recorded respiratory symptoms, frequency of medication use, and related information in daily diaries. We used a multiple regression time-series model to analyze which air pollutants, if any, were associated with health outcomes reported by study participants. Airborne H+ was found to be significantly associated with several indicators of asthma status, including moderate or severe cough and shortness of breath. Cough was also associated with fine particulates, and shortness of breath with sulfates. Incorporating the participants' time spent outside and exercise intensity into the daily measure of exposure strengthened the association between these pollutants and asthmatic symptoms. Nitric acid and nitrates were not significantly associated with any respiratory symptom analyzed. In this population of asthmatics, several outdoor air pollutants, particularly airborne acidity, were associated with daily respiratory symptoms.

  9. Electromagnetic pump stator coil

    DOE Patents [OSTI]

    Fanning, A.W.; Dahl, L.R.

    1996-06-25T23:59:59.000Z

    An electrical stator coil for an electromagnetic pump includes a continuous conductor strip having first and second terminals at opposite ends thereof and an intermediate section disposed therebetween. The strip is configured in first and second coil halves, with the first coil half including a plurality of windings extending from the first terminal to the intermediate section, and the second coil half including a plurality of windings extending from the second terminal to the intermediate section. The first and second coil halves are disposed coaxially, and the first and second terminals are disposed radially inwardly therefrom with the intermediate section being disposed radially outwardly therefrom. 9 figs.

  10. Electromagnetic pump stator coil

    DOE Patents [OSTI]

    Fanning, Alan W. (San Jose, CA); Dahl, Leslie R. (Livermore, CA)

    1996-01-01T23:59:59.000Z

    An electrical stator coil for an electromagnetic pump includes a continuous conductor strip having first and second terminals at opposite ends thereof and an intermediate section disposed therebetween. The strip is configured in first and second coil halves, with the first coil half including a plurality of windings extending from the first terminal to the intermediate section, and the second coil half including a plurality of windings extending from the second terminal to the intermediate section. The first and second coil halves are disposed coaxially, and the first and second terminals are disposed radially inwardly therefrom with the intermediate section being disposed radially outwardly therefrom.

  11. Airborne chemical baseline evaluation of the 222-S laboratory complex

    SciTech Connect (OSTI)

    Bartley, P., Fluor Daniel Hanford

    1997-02-12T23:59:59.000Z

    The 222-S Laboratory complex stores and uses over 400 chemicals. Many of these chemicals are used in laboratory analysis and some are used for maintenance activities. The majority of laboratory analysis chemicals are only used inside of fume hoods or glove boxes to control both chemical and radionuclide airborne concentrations. This evaluation was designed to determine the potential for laboratory analysis chemicals at the 222-S Laboratory complex to cause elevated airborne chemical concentrations under normal conditions. This was done to identify conditions and activities that should be subject to airborne chemical monitoring in accordance with the Westinghouse Hanford Company Chemical Hygiene Plan.

  12. A real-time airborne scatterometer data processor

    E-Print Network [OSTI]

    Reisor, Gary James

    1976-01-01T23:59:59.000Z

    A REAL-TIME AIRBORNE SCATTEROMETER DATA PROCES'SOR A Thesis by Gary James Reisor Submitted to the Graduate College of Texas A)M Vniversity in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE August 1976 Major... Subject: Electrical Fngineering A REAL-TIME AIRBORNE SCATTEROMETER DATA PROCESSOR A Thesis by Gary James Reisor Approved as to style and content by: arrman o Committee Hea o Depa tment em er Mem er August 1976 ABSTRACT A Real-time Airborne...

  13. Electromagnetic reactions on light nuclei

    E-Print Network [OSTI]

    Sonia Bacca; Saori Pastore

    2014-07-13T23:59:59.000Z

    Electromagnetic reactions on light nuclei are fundamental to advance our understanding of nuclear structure and dynamics. The perturbative nature of the electromagnetic probes allows to clearly connect measured cross sections with the calculated structure properties of nuclear targets. We present an overview on recent theoretical ab-initio calculations of electron-scattering and photonuclear reactions involving light nuclei. We encompass both the conventional approach and the novel theoretical framework provided by chiral effective field theories. Because both strong and electromagnetic interactions are involved in the processes under study, comparison with available experimental data provides stringent constraints on both many-body nuclear Hamiltonians and electromagnetic currents. We discuss what we have learned from studies on electromagnetic observables of light nuclei, starting from the deuteron and reaching up to nuclear systems with mass number A=16.

  14. airborne laser scanner: Topics by E-print Network

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

    12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 A glacier inventory for South Tyrol, Italy, based on airborne laser-scanner data Geosciences Websites...

  15. Human Occupancy as a Source of Indoor Airborne Bacteria

    E-Print Network [OSTI]

    Hospodsky, Denina

    Exposure to specific airborne bacteria indoors is linked to infectious and noninfectious adverse health outcomes. However, the sources and origins of bacteria suspended in indoor air are not well understood. This study ...

  16. airborne moisture-indicating microorganisms: Topics by E-print...

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

    OF A COLD FRONT AS REVEALED BY AIRBORNE 95 GHZ RADAR Bart cold front moved through the Texas Panhandle . . The front was intercepted by an armada of mobile-defined dryline and a...

  17. Epidemiology of Airborne Virulent Rhodococcus equi at Horse Breeding Farms

    E-Print Network [OSTI]

    Kuskie, Kyle Ryan

    2012-02-14T23:59:59.000Z

    Rhodococcus equi causes severe pneumonia, resulting in disease and sometimes death of foals. Infection is thought to occur by inhalation of dust contaminated with virulent R equi. A recent study of 3 horse breeding farms in Ireland found airborne...

  18. accidental airborne releases: Topics by E-print Network

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

    Fred A. Kruse; Joseph W. Boardman; Jonathan F. Huntington 2003-01-01 347 AUGUST 1961 MONTHLY WEATHER REVIEW 285 ACCURACY OF THE AIRBORNE ECONOMICAL RADIOMETER CiteSeer Summary:...

  19. affects on the transport of airborne emissions. This information...

    National Nuclear Security Administration (NNSA)

    due to airborne material. Detailed analyses (CRWMS M&O 1995a, 1997b) of the local wind characteristics in the study area led to the choice of Site 1 as the meteorological...

  20. An airborne digital processor for radar scatterometer data

    E-Print Network [OSTI]

    Yeadon, David Steven

    1977-01-01T23:59:59.000Z

    AN AIRBORNE DIGITAL PROCESSOR FOR RADAR SCATTEROMETER DATA A Thesis by DAVID STEVEN YEADON Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1977... Major Subject: Electrical Engineering AN AIRBORNE DIGITAL PROCESSOR FOR RADAR SCATTEROMETER DATA A Thesis by DAVID STEVEN YEADON Approved as to style and content by: (Chairman o Committee) Head of epartment) ( (Member ) (Member) August 1977...

  1. Simulated performance of an airborne lidar wind shear detection system

    E-Print Network [OSTI]

    Griffith, Kenneth Scott

    1987-01-01T23:59:59.000Z

    SIMULATED PERFORMANCE OF AN AIRBORNE LIDAR WIND SHEAR DETECTION SYSTEM A Thesis by KENNETH SCOTT GRIFFITH Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE... December 1987 Major Subject: Physics SIMULATED PERFORMANCE OF AN AIRBORNE LIDAR WIND SHEAR DETECTION SYSTEM A Thesis by KENNETH SCOTT GRIFFITH Approved as to style and content by: e . atta ar (Chair an of Committee) T omas . air, III (Member) ic...

  2. Nucleon Electromagnetic Form Factors

    SciTech Connect (OSTI)

    Marc Vanderhaeghen; Charles Perdrisat; Vina Punjabi

    2007-10-01T23:59:59.000Z

    There has been much activity in the measurement of the elastic electromagnetic proton and neutron form factors in the last decade, and the quality of the data has greatly improved by performing double polarization experiments, in comparison with previous unpolarized data. Here we review the experimental data base in view of the new results for the proton, and neutron, obtained at JLab, MAMI, and MIT-Bates. The rapid evolution of phenomenological models triggered by these high-precision experiments will be discussed, including the recent progress in the determination of the valence quark generalized parton distributions of the nucleon, as well as the steady rate of improvements made in the lattice QCD calculations.

  3. Using HEM surveys to evaluate disposal of by-product water from CBNG development in the Powder River Basin, Wyoming

    SciTech Connect (OSTI)

    Lipinski, B.A.; Sams, J.I.; Smith, B.D. (USGS, Denver, CO); Harbert, W.P.

    2008-05-01T23:59:59.000Z

    Production of methane from thick, extensive coal beds in the Powder River Basin ofWyoming has created water management issues. Since development began in 1997, more than 650 billion liters of water have been produced from approximately 22,000 wells. Infiltration impoundments are used widely to dispose of by-product water from coal bed natural gas (CBNG) production, but their hydrogeologic effects are poorly understood. Helicopter electromagnetic surveys (HEM) were completed in July 2003 and July 2004 to characterize the hydrogeology of an alluvial aquifer along the Powder River. The aquifer is receiving CBNG produced water discharge from infiltration impoundments. HEM data were subjected to Occam’s inversion algorithms to determine the aquifer bulk conductivity, which was then correlated to water salinity using site-specific sampling results. The HEM data provided high-resolution images of salinity levels in the aquifer, a result not attainable using traditional sampling methods. Interpretation of these images reveals clearly the produced water influence on aquifer water quality. Potential shortfalls to this method occur where there is no significant contrast in aquifer salinity and infiltrating produced water salinity and where there might be significant changes in aquifer lithology. Despite these limitations, airborne geophysical methods can provide a broadscale (watershed-scale) tool to evaluate CBNG water disposal, especially in areas where field-based investigations are logistically prohibitive. This research has implications for design and location strategies of future CBNG water surface disposal facilities within the Powder River Basin.

  4. ARM Airborne Continuous carbon dioxide measurements

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Biraud, Sebastien

    The heart of the AOS CO2 Airborne Rack Mounted Analyzer System is the AOS Manifold. The AOS Manifold is a nickel coated aluminum analyzer and gas processor designed around two identical nickel-plated gas cells, one for reference gas and one for sample gas. The sample and reference cells are uniquely designed to provide optimal flushing efficiency. These cells are situated between a black-body radiation source and a photo-diode detection system. The AOS manifold also houses flow meters, pressure sensors and control valves. The exhaust from the analyzer flows into a buffer volume which allows for precise pressure control of the analyzer. The final piece of the analyzer is the demodulator board which is used to convert the DC signal generated by the analyzer into an AC response. The resulting output from the demodulator board is an averaged count of CO2 over a specified hertz cycle reported in volts and a corresponding temperature reading. The system computer is responsible for the input of commands and therefore works to control the unit functions such as flow rate, pressure, and valve control.The remainder of the system consists of compressors, reference gases, air drier, electrical cables, and the necessary connecting plumbing to provide a dry sample air stream and reference air streams to the AOS manifold.

  5. Electromagnetically driven peristaltic pump

    DOE Patents [OSTI]

    Marshall, Douglas W. (Blackfoot, ID)

    2000-01-01T23:59:59.000Z

    An electromagnetic peristaltic pump apparatus may comprise a main body section having an inlet end and an outlet end and a flexible membrane which divides the main body section into a first cavity and a second cavity. The first cavity is in fluid communication with the inlet and outlet ends of the main body section. The second cavity is not in fluid communication with the first cavity and contains an electrically conductive fluid. The second cavity includes a plurality of electrodes which are positioned within the second cavity generally adjacent the flexible membrane. A magnetic field generator produces a magnetic field having a plurality of flux lines at least some of which are contained within the second cavity of the main body section and which are oriented generally parallel to a flow direction in which a material flows between the inlet and outlet ends of the main body section. A control system selectively places a voltage potential across selected ones of the plurality of electrodes to deflect the flexible membrane in a wave-like manner to move material contained in the first cavity between the inlet and outlet ends of the main body section.

  6. SOLAR NANTENNA ELECTROMAGNETIC COLLECTORS

    SciTech Connect (OSTI)

    Steven D. Novack; Dale K. Kotter; Dennis Slafer; Patrick Pinhero

    2008-08-01T23:59:59.000Z

    This research explores a new efficient approach for producing electricity from the abundant energy of the sun. A nanoantenna electromagnetic collector (NEC) has been designed, prototyped, and tested. Proof of concept has been validated. The device targets mid-infrared wavelengths where conventional photovoltaic (PV) solar cells do not respond but is abundant in solar energy. The initial concept of designing NEC antennas was based on scaling of radio frequency antenna theory. This approach has proven unsuccessful by many due to not fully understanding and accounting for the optical behavior of materials in the THz region. Also until recent years the nanofabrication methods were not available to fabricate the optical antenna elements. We have addressed and overcome both technology barriers. Several factors were critical in successful implementation of NEC including: 1) frequency-dependent modeling of antenna elements, 2) selection of materials with proper THz properties and 3) novel manufacturing methods that enable economical large-scale manufacturing. The work represents an important step toward the ultimate realization of a low-cost device that will collect as well as convert this radiation into electricity, which will lead to a wide spectrum, high conversion efficiency, and low cost solution to complement conventional PVs.

  7. Development of a new airborne humidigraph system.

    SciTech Connect (OSTI)

    Pekour, Mikhail S.; Schmid, Beat; Chand, Duli; Hubbe, John M.; Kluzek, Celine D.; Nelson, Danny A.; Tomlinson, Jason M.; Cziczo, Daniel J.

    2012-12-06T23:59:59.000Z

    Modeling and measurements of aerosol properties is complicated by the hygroscopic behavior of the aerosols adding significant uncertainty to our best estimates of the direct effect aerosols exert on the radiative balance of the atmosphere. Airborne measurements of aerosol hygroscopicity are particularly challenging but critically needed. This motivated the development of a newly designed system which can measure the dependence of the aerosol light scattering coefficient (?sp) on relative humidity (RH), known as f(RH), in real-time at a rapid rate (<10 s) on an aerial platform. The new system has several advantages over existing systems. It consists of three integrating nephelometers and humidity conditioners for simultaneous measurement of the ?sp at three different RHs. The humidity is directly controlled in exchanger cells without significant temperature disturbances and without particle dilution, heating or loss of volatile compounds. The single-wavelength nephelometers are illuminated by LED-based light sources thereby minimizing heating of the sample stream. The flexible design of the RH conditioners, consisting of a number of specially designed exchanger cells (driers or humidifiers), enables us to measure f(RH) under hydration or dehydration conditions (always starting with the aerosol in a known state) with a simple system re-configuration. These exchanger cells have been characterized for losses of particles using latex spheres and laboratory generated ammonium sulfate aerosols. Residence times of 6 - 9 s in the exchangers and subsequent lines is sufficient for most aerosols to attain equilibrium with the new water vapor content. The performance of this system has been assessed aboard DOE’s G-1 research aircraft during test flights over California, Oregon, and Washington.

  8. BioSAR Airborne Biomass Sensing System

    SciTech Connect (OSTI)

    Graham, R.L.; Johnson, P.

    2007-05-24T23:59:59.000Z

    This CRADA was developed to enable ORNL to assist American Electronics, Inc. test a new technology--BioSAR. BioSAR is a an airborne, low frequency (80-120 MHz {approx} FM radio frequencies) synthetic aperture radar (SAR) technology which was designed and built for NASA by ZAI-Amelex under Patrick Johnson's direction. At these frequencies, leaves and small branches are nearly transparent and the majority of the energy reflected from the forest and returned to the radar is from the tree trunks. By measuring the magnitude of the back scatter, the volume of the tree trunk and therefore the biomass of the trunks can be inferred. The instrument was successfully tested on tropical rain forests in Panama. Patrick Johnson, with American Electronics, Inc received a Phase II SBIR grant from DOE Office of Climate Change to further test and refine the instrument. Mr Johnson sought ORNL expertise in measuring forest biomass in order for him to further validate his instrument. ORNL provided ground truth measurements of forest biomass at three locations--the Oak Ridge Reservation, Weyerhaeuser Co. commercial pine plantations in North Carolina, and American Energy and Power (AEP) Co. hardwood forests in southern Ohio, and facilitated flights over these forests. After Mr. Johnson processed the signal data from BioSAR instrument, the processed data were given to ORNL and we attempted to derive empirical relationships between the radar signals and the ground truth forest biomass measurements using standard statistical techniques. We were unsuccessful in deriving such relationships. Shortly before the CRADA ended, Mr Johnson discovered that FM signal from local radio station broadcasts had interfered with the back scatter measurements such that the bulk of the signal received by the BioSAR instrument was not backscatter from the radar but rather was local radio station signals.

  9. Real-time airborne particle analyzer

    DOE Patents [OSTI]

    Reilly, Peter T.A.

    2012-10-16T23:59:59.000Z

    An aerosol particle analyzer includes a laser ablation chamber, a gas-filled conduit, and a mass spectrometer. The laser ablation chamber can be operated at a low pressure, which can be from 0.1 mTorr to 30 mTorr. The ablated ions are transferred into a gas-filled conduit. The gas-filled conduit reduces the electrical charge and the speed of ablated ions as they collide and mix with buffer gases in the gas-filled conduit. Preferably, the gas filled-conduit includes an electromagnetic multipole structure that collimates the nascent ions into a beam, which is guided into the mass spectrometer. Because the gas-filled conduit allows storage of vast quantities of the ions from the ablated particles, the ions from a single ablated particle can be analyzed multiple times and by a variety of techniques to supply statistically meaningful analysis of composition and isotope ratios.

  10. Ground Electromagnetic Survey At Kilauea East Rift Geothermal...

    Open Energy Info (EERE)

    horizontally on the ground. Interpretation of the data was made using an inversion computer program and the primary magnetic field was estimated directly from the data rather...

  11. Ground Electromagnetic Survey At Kilauea East Rift Geothermal Area

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG ContractingGreenOrderNebraska:Gridley,Grocery 2009 TSDGroom(Kauahikaua

  12. Frequency-Domain Electromagnetic Survey | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdf Jump1946865°, -86.0529604° Show MapFredericksburgIdaho:(Redirected from

  13. Frequency-Domain Electromagnetic Survey | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdf Jump1946865°, -86.0529604° Show MapFredericksburgIdaho:(Redirected from

  14. Frequency-Domain Electromagnetics Survey At Kilauea East Rift Geothermal

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdf Jump1946865°, -86.0529604° Show MapFredericksburgIdaho:(Redirected fromArea

  15. IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY 1 Airborne Wind Energy Based on Dual Airfoils

    E-Print Network [OSTI]

    IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY 1 Airborne Wind Energy Based on Dual Airfoils Mario Zanon, S´ebastien Gros, Joel Andersson and Moritz Diehl Abstract--The Airborne Wind Energy paradigm Airborne Wind Energy enables flight in higher-altitude, stronger wind layers, the extra drag generated

  16. Control of Airborne Wind Energy Systems Based on Nonlinear Model Predictive Control & Moving Horizon Estimation

    E-Print Network [OSTI]

    Control of Airborne Wind Energy Systems Based on Nonlinear Model Predictive Control & Moving arising in the Airborne Wind Energy paradigm, an essential one is the control of the tethered airfoil], [3], the Airborne Wind Energy (AWE) paradigm shift proposes to get rid of the structural elements

  17. Airborne Infrared Target Tracking with the Nintendo Wii Remote Sensor

    E-Print Network [OSTI]

    Beckett, Andrew 1984-

    2012-11-12T23:59:59.000Z

    AIRBORNE INFRARED TARGET TRACKING WITH THE NINTENDO WII REMOTE SENSOR A Thesis by ANDREW WILSON BECKETT Submitted to the O ce of Graduate Studies of Texas A&M University in partial ful llment of the requirements for the degree of MASTER... of UAS in use today and provide invaluable capabilities to both the military and civil services. UAS are well-suited to the ISR role: large UAS can remain airborne for far longer than the limits of human endurance without needing to be large enough...

  18. Remote monitoring of soil moisture using airborne microwave radiometers

    E-Print Network [OSTI]

    Kroll, Charles Lindsey

    1973-01-01T23:59:59.000Z

    REMOTE MONITORING OF SOIL MOISTURE USING AIRBORNE MICROWAVE RADIOMETERS A Thesis by CHARLES LINDSEY J(ROLL Submitted to the Graduate College of Texas A)M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE... August 1973 Major Subject: Electrical Engineering REMOTE MONITORING OF SOIL MOISTURE USING AIRBORNE MICROWAVE RADIOMETERS A Thesis by CHARLES LINDSEY KROLL Approved as to style and content by: man o Co mrtt Hca o D artmc c Ill l c r Mem e Member...

  19. Airborne asbestos fiber evaluation: a comparison of three methods

    E-Print Network [OSTI]

    Studinka, Emil

    1979-01-01T23:59:59.000Z

    AIRBORNE ASBFSTOS FIBER EVALUATION-A CONPARISON OF TliR'E NETHODS A Thesis EYiIL STUDINKA Submitted to the Graduate Co'ilege of Texas ALN University in partial fulfillment of the requirement for the degree of HASTER OF SCIEtiCE December 1979... Najor Subject: Industrial Hygiene AIRBORNE ASBESTOS FIBER EVALUATION-A COMPARISON OF THRFE METHODS A Thesis by EMIL STUDI NKA Approved as to style and content by: ichard B. onzen air ar, of Committee) llaymon L. Johnston (Member) hlilliam P...

  20. The development of a passive dosimeter for airborne benzene vapors

    E-Print Network [OSTI]

    Hager, David William

    1978-01-01T23:59:59.000Z

    THE DEVELOPMENT OF A PASSIVE DOSIMETER FOR AIRBORNE BENZENE VAPORS A Thesis DAVID NII LIAM HAGER Submitted to the Graduate Colleqe of Texas ASM University in partial fulfillment of the requirement for the d"gree of MASTER OF SC. IENCE May IB...7B Major Subject: Indus t& ial Hyqiene THE DEVELOPMENT OF A PASSIVE DOSIMETER FOR AIRBORNE BFNZENE VAPORS A Thesis by DAVID NILLIAM HAGER Approved as to style and content by: Z Chairman of Commi t e~ ~'g C'S~ Head of Department~ Member...

  1. The development of a passive dosimeter for airborne aniline vapors

    E-Print Network [OSTI]

    Campbell, James Evan

    1977-01-01T23:59:59.000Z

    THE DEVELOPMENT OF A PASSIVE DOSIMETER FOR AIRBORNE ANILINE VAPORS A Thesis by James Evan Campbell Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE I...'iay 1977 Major Subject: Industrial Hygiene THE DEVELOPMENT OF A PASSIVE DOSIMETER FOR AIRBORNE ANILINE VAPORS A Thesis by James E van Campbe1 1 Approved as to style and content by: Chairm of Com itt ea of De rtment Member Member May 1977...

  2. Electromagnetic-gravitational cross-sections in external electromagnetic fields

    E-Print Network [OSTI]

    Long, H N; Tran, T A; Tuan, T A; Long, Hoang Ngoc; Van Soa, Dang; Tran, Tuan A; Tuan, Tran Anh

    1994-01-01T23:59:59.000Z

    The classical processes: the conversion of photons into gravitons in the static electromagnetic fields are considered by using Feynman perturbation techniques. The differential cross sections are presented for the conversion in the electric field of the flat condesor and the magnetic field of the selenoid. A numerical evaluation shows that the cross sections may have the observable value in the present technical scenario.

  3. Passive Remote Sensing of Clouds from Airborne Platforms

    E-Print Network [OSTI]

    Toohey, Darin W.

    instrument: the Solar Spectral Flux Radiometer (SSFR) · Some spectrometry/radiometry basics · How can we Airborne Measurements? · For climate studies, the high temporal and spatial variability of aerosols vertical profiles of radiative flux: where is radiative energy being deposited? · Combined with in situ

  4. airborne high energy: Topics by E-print Network

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

    airborne high energy First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Department of Geomatics...

  5. The study of cirrus clouds using airborne and satellite data

    E-Print Network [OSTI]

    Meyer, Kerry Glynne

    2004-09-30T23:59:59.000Z

    Cirrus clouds are known to play a key role in the earth's radiation budget, yet are one of the most uncertain components of the earth-atmosphere system. With the development of instruments such as the Airborne Visible/Infrared Imaging Spectrometer...

  6. airborne carbon 14c: Topics by E-print Network

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

    airborne carbon 14c First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 PERSPECTIVE PERSPECTIVE Blowin'...

  7. Quality Assurance Program Plan for radionuclide airborne emissions monitoring

    SciTech Connect (OSTI)

    Vance, L.M.

    1993-07-01T23:59:59.000Z

    This Quality Assurance Program Plan (QAPP) describes the quality assurance requirements and responsibilities for radioactive airborne emissions measurements activities from regulated stacks are controlled at the Hanford Site. Detailed monitoring requirements apply to stacks exceeding 1% of the standard of 10 mrem annual effective dose equivalent to the maximally exposed individual from operations of the Hanford Site.

  8. airborne differential absorption: Topics by E-print Network

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

    airborne differential absorption First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Department of...

  9. Electromagnetic effects on geodesic acoustic modes

    SciTech Connect (OSTI)

    Bashir, M. F., E-mail: frazbashir@yahoo.com [Salam Chair in Physics, G. C. University Lahore, Katchery Road, Lahore 54000 (Pakistan); Department of Physics, G. C. University Lahore, Katchery Road, Lahore 54000 (Pakistan); Smolyakov, A. I. [University of Saskatchewan, 116 Science Place, Saskatoon S7N 5E2 (Canada); Institute of Tokamak Physics, NRC “Kurchatov Institute,” 123182 Moscow (Russian Federation); Elfimov, A. G. [Institute of Physics, University of São Paulo, São Paulo 05508-090 (Brazil); Melnikov, A. V. [Institute of Tokamak Physics, NRC “Kurchatov Institute,” 123182 Moscow (Russian Federation); National Research Nuclear University MEPhI, 115409, Moscow (Russian Federation); Murtaza, G. [Visiting Professor, Department of Physics, Quaid-e-Azam University, Islamabad (Pakistan)

    2014-08-15T23:59:59.000Z

    By using the full electromagnetic drift kinetic equations for electrons and ions, the general dispersion relation for geodesic acoustic modes (GAMs) is derived incorporating the electromagnetic effects. It is shown that m?=?1 harmonic of the GAM mode has a finite electromagnetic component. The electromagnetic corrections appear for finite values of the radial wave numbers and modify the GAM frequency. The effects of plasma pressure ?{sub e}, the safety factor q, and the temperature ratio ? on GAM dispersion are analyzed.

  10. Electromagnetic design considerations for fast acting controllers

    SciTech Connect (OSTI)

    Woodford, D.A. [Manitoba HVDC Research Centre, Winnipeg, Manitoba (Canada)] [Manitoba HVDC Research Centre, Winnipeg, Manitoba (Canada)

    1996-07-01T23:59:59.000Z

    Electromagnetic design considerations for fast acting controllers in a power system is introduced and defined. A distinction is made in relation to the more commonly understood system control design necessary for damping electromechanical oscillations using stability programs and eigenanalysis. Electromagnetic eigenanalysis tools have limited availability and are consequently rarely used. Electromagnetic transients programs (emtp) on the other hand are widely used and a procedure for undertaking electromagnetic control design of fast acting controllers in a power system using emtp is presented.

  11. Structurally Electromagnetic Formation Flight (EMFF)

    E-Print Network [OSTI]

    de Weck, Olivier L.

    Structurally connected secondary mirror EMFF secondary mirror EMFF Design Electromagnetic Formation for a smaller, simpler system. µEMFF investigates the use of conventional conductors, capacitors, and solar propellants that often limit lifetime, the EMFF system uses solar power to energize a magnetic field

  12. Sky Surveys

    E-Print Network [OSTI]

    Djorgovski, S G; Drake, A J; Graham, M J; Donalek, C

    2012-01-01T23:59:59.000Z

    Sky surveys represent a fundamental data basis for astronomy. We use them to map in a systematic way the universe and its constituents, and to discover new types of objects or phenomena. We review the subject, with an emphasis on the wide-field imaging surveys, placing them in a broader scientific and historical context. Surveys are the largest data generators in astronomy, propelled by the advances in information and computation technology, and have transformed the ways in which astronomy is done. We describe the variety and the general properties of surveys, the ways in which they may be quantified and compared, and offer some figures of merit that can be used to compare their scientific discovery potential. Surveys enable a very wide range of science; that is perhaps their key unifying characteristic. As new domains of the observable parameter space open up thanks to the advances in technology, surveys are often the initial step in their exploration. Science can be done with the survey data alone or a comb...

  13. Laminated electromagnetic pump stator core

    DOE Patents [OSTI]

    Fanning, A.W.

    1995-08-08T23:59:59.000Z

    A stator core for an electromagnetic pump includes a plurality of circumferentially abutting tapered laminations extending radially outwardly from a centerline axis to collectively define a radially inner bore and a radially outer circumference. Each of the laminations includes radially inner and outer edges and has a thickness increasing from the inner edge toward the outer edge to provide a substantially continuous path adjacent the circumference. This pump is used in nuclear fission reactors. 19 figs.

  14. Electromagnetism Tutorial (Tutorial de Eletromagnetismo)

    E-Print Network [OSTI]

    Dantas, Christine C

    2009-01-01T23:59:59.000Z

    The present tutorial aims at covering the fundamentals of electromagnetism, in a condensed and clear manner. Some solved and proposed exercises have been included. The reader is assumed to have knowledge of basic electricity, partial derivatives and multiple integrals. ----- O presente tutorial visa cobrir os fundamentos do eletromagnetismo, de forma condensada e clara. Alguns exercicios resolvidos e propostos foram incluidos. Assume-se conhecimento de eletricidade basica, derivadas parciais e integrais multiplas.

  15. A 100-micron polarimeter for the Kuiper Airborne Observatory

    SciTech Connect (OSTI)

    Novak, G.; Gonatas, D.P.; Hildebrand, R.H.; Platt, S.R.

    1989-02-01T23:59:59.000Z

    Consideration is given to the design and performance of the 100-micron polarimeter proposed for use on the NASA Kuiper Airborne Observatory. The polarimeter specifications are listed. The polarimeter design and data reduction techniques are based on the work of Hildebrand et al. (1984) and Dragovan (1986). The polarimeter has an improved signal-to-noise ratio and systematic measurement errors below 0.2 percent. 20 refs.

  16. Electromagnetic Effects in SDF Explosions

    SciTech Connect (OSTI)

    Reichenbach, H; Neuwald, P; Kuhl, A L

    2010-02-12T23:59:59.000Z

    The notion of high ion and electron concentrations in the detonation of aluminized explosive mixtures has aroused some interest in electro-magnetic effects that the SDF charges might generate when detonated. Motivated by this interest we have started to investigate whether significant electro-magnetic effects show up in our small-scale experiments. However, the design of instrumentation for this purpose is far from straightforward, since there are a number of open questions. Thus the main aim of the feasibility tests is to find - if possible - a simple and reliable method that can be used as a diagnostic tool for electro-magnetic effects. SDF charges with a 0.5-g PETN booster and a filling of 1 g aluminum flakes have been investigated in three barometric bomb calorimeters with volumes ranging from 6.3 l to of 6.6 l. Though similar in volume, the barometric bombs differed in the length-to-diameter ratio. The tests were carried out with the bombs filled with either air or nitrogen at ambient pressure. The comparison of the test in air to those in nitrogen shows that the combustion of TNT detonation products or aluminum generates a substantial increase of the quasi-steady overpressure in the bombs. Repeated tests in the same configuration resulted in some scatter of the experimental results. The most likely reason is that the aluminum combustion in most or all cases is incomplete and that the amount of aluminum actually burned varies from test to test. The mass fraction burned apparently decreases with increasing aspect ratio L/D. Thus an L/D-ratio of about 1 is optimal for the performance of shock-dispersed-fuel combustion. However, at an L/D-ratio of about 5 the combustion still yields appreciable overpressure in excess of the detonation. For a multi-burst scenario in a tunnel environment with a number of SDF charges distributed along a tunnel section a spacing of 5 tunnel diameter and a fuel-specific volume of around 7 l/g might provide an acceptable compromise between optimizing the combustion performance and keeping the number of elementary charges low. Further tests in a barometric bomb calorimeter of 21.2 l volume were performed with four types of aluminum. The mass fraction burned in this case appeared to depend on the morphology of the aluminum particles. Flake aluminum exhibited a better performance than granulated aluminum with particle sizes ranging from below 25 {micro}m to 125 {micro}m for the coarsest material. In addition, a feasibility study on electro-magnetic effects from SDF charges detonated in a tunnel has been performed. A method was developed to measure the local, unsteady electro-conductivity in the detonation/combustion products cloud. This method proved to yield reproducible results. A variety of methods were tested with regard to probing electro-magnetic pulses from the detonation of SDF charges. The results showed little reproducibility and were small compared to the effect from pulsed high voltage discharges of comparatively small energy (around 32 J). Thus either no significant electromagnetic pulse is generated in our small-scale tests or the tested techniques have to be discarded as too insensitive or too limited in bandwidth to detect possibly very high frequency electro-magnetic disturbances.

  17. Effectiveness of bomber deployed autonomous airborne vehicles in finding rail mobile SS-24s

    SciTech Connect (OSTI)

    Abey, A.E.; Erickson, S.A.; Norquist, P.D.

    1990-08-01T23:59:59.000Z

    Computer simulation predictions of the effectiveness of autonomous airborne vehicles in finding rail mobile SS-24s are presented. Effectiveness is discussed for several autonomous airborne vehicle endurances and survivabilities for the search area southwest of Moscow. The effect of where the Soviets place the SS-24s on the rail network was also investigated. The simulation predicts significant variations in the ability of a multi-autonomous airborne vehicle system to find SS-24s with these parameters. 12 figs., 1 tab.

  18. Aerial gamma ray and magnetic survey: Mississippi and Florida airborne survey, Fort Smith quadrangle, Oklahoma, and Arkansas. Final report

    SciTech Connect (OSTI)

    Not Available

    1980-09-01T23:59:59.000Z

    The Fort Smith quadrangle in western Arkansas and eastern Oklahoma overlies thick Paleozoic sediments of the Arkoma Basin. These Paleozoics dominate surface exposure except where covered by Quaternary Alluvial materials. Examination of available literature shows no known uranium deposits (or occurrences) within the quadrangle. Seventy-five groups of uranium samples were defined as anomalies and are discussed briefly. None were considered significant, and most appeared to be of cultural origin. Magnetic data show character that suggest structural and/or lithologic complexity, but imply relatively deep-seated sources.

  19. Aerial gamma ray and magnetic survey: Mississippi and Florida airborne survey, Tupelo quadrangle, Mississippi, Alabama, and Tennessee. Final report

    SciTech Connect (OSTI)

    Not Available

    1980-09-01T23:59:59.000Z

    The Tupelo quadrangle covers a region immediately east of the Mississippi River flood plain in the northernmost Gulf Coastal Physiographic Province. Sediments of Teritary and Paleozoic basins shoal eastward. Tertiary exposures dominate the western half of the quadrangle. Cretaceous strata are exposed over most of the eastern half. A search of available literature revealed no known uranium deposits. A total of eighty-six uranium anomalies were detected and are discussed briefly. Few were considered significant, and most appear to relate to some cultural feature. Magnetic data appears, for the most part, to be in agreement with existing structural interpretations of the region.

  20. Aerial gamma ray and magnetic survey: Mississippi and Florida airborne survey, Helena quadrangle of Arkansas, Mississippi and Tennessee. Final report

    SciTech Connect (OSTI)

    Not Available

    1980-09-01T23:59:59.000Z

    The Helena quadrangle covers a region largely within the Mississippi River flood plain in the extreme northern Gulf Coastal Province. Tertiary sediments in this area are relatively thick, and overlie a Paleozoic basin gradually shoaling to the northeast. The Oachita Tectonic Zone strikes southeasterly through the center of the quadrangle. The exposed sequence is almost entirely Quaternary sediments of the flood plain area. Older Cenozoic deposits crop out in upland areas on the west side of the river valley. A search of available literature revealed no known uranium deposits. Sixty uranium anomalies were detected and are discussed briefly. None were considered significant, and all appeared to occur as the result of cultural and/or weather effects. Magnetic data appear to be in agreement with existing structural interpretations of the region.

  1. Aerial gamma ray and magnetic survey: Mississippi and Florida airborne survey, Blytheville quadrangle, Tennessee, Arkansas, Alabama, and Missouri. Final report

    SciTech Connect (OSTI)

    Not Available

    1980-09-01T23:59:59.000Z

    The Blytheville quadrangle covers a region east of the Mississippi River in the northernmost Gulf Coastal Province. The Tertiary Mississippi Embayment and the older Black Warrior - Arkoma Basins all shoal to the northeast in this area. Surficial exposures are dominantly Cretaceous or younger. Older strata are exposed in the northeast. A search of available literature revealed no known uranium deposits. Ninety uranium anomalies were detected and are discussed briefly. Few were considered significant,and almost all appear to relate to some cultural feature. Magnetic data appears, for the most part, to be in agreement with existing structural interpretations of the region.

  2. Y-12 electromagnetic separation process wins approval

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

    work immediately. Just like what we know of Groves, huh. The gaseous diffusion, reactor pile and electromagnetic separation approaches were reviewed with each group attempting to...

  3. Electromagnetic compatibility of nuclear power plants

    SciTech Connect (OSTI)

    Cabayan, H.S.

    1983-01-01T23:59:59.000Z

    Lately, there has been a mounting concern about the electromagnetic compatibility of nuclear-power-plant systems mainly because of the effects due to the nuclear electromagnetic pulse, and also because of the introduction of more-sophisticated and, therefore, more-susceptible solid-state devices into the plants. Questions have been raised about the adequacy of solid-state-device protection against plant electromagnetic-interference sources and transients due to the nuclear electromagnetic pulse. In this paper, the author briefly reviews the environment, and the coupling, susceptibility, and vulnerability assessment issues of commercial nuclear power plants.

  4. Cellular Manipulation and Control by Electromagnetism | Argonne...

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

    phenomenon for sensors; however, one may also use intense electromagnetic radiation, such as pulsed power, plasmas, or lasers, to induce changes in cellular...

  5. 6.630 Electromagnetic Theory, Fall 2002

    E-Print Network [OSTI]

    Kong, Jin Au, 1942-

    6.630 is an introductory subject on electromagnetics, emphasizing fundamental concepts and applications of Maxwell equations. Topics covered include: polarization, dipole antennas, wireless communications, forces and energy, ...

  6. Airborne gamma-ray spectrometer and magnetometer survey: Weed quadrangle, California. Final report

    SciTech Connect (OSTI)

    Not Available

    1981-05-01T23:59:59.000Z

    Twelve anamolous areas attributable to gamma radiation in the uranium spectral window, and twenty-three in the thorium channel, have been recognized and delineated on the Weed quadrangle. The majority of the uranium anomalies are located in the southwestern part of the map sheet. Most of these are correlated with the pre-Cretaceous metamorphic rock system and the Mesozoic granitic rocks intrusive into it. Of the twenty-three anomalous areas of increased gamma radiation in the thorium spectral window, most are located in the northeast and the east center in a north-south trending belt. However, this apparent alignment is probably fortuitous as the individual anomalies are correlated with several different rock formations. Three are correlated with upper Cretaceous marine sediments, six with Ordovician marine sediments, two with Mesozoic granitic intrusives, and two with Silurian marine sediments. In the northwestern part of the quadrangle, four thorium radiation anomalies are delineated over exposures of upper Jurassic marine rocks. Anomaly 6, in the southwest, warrants attention as it suggests strong radiation in the uranium channel with little or no thorium radiation. The uranium/thorium and uranium/potassium ratio anomalies are also strong, supporting the likelihood of uranium enrichment. The feature is located on line 540, fiducials 7700 to 7720. Anomaly 7, on line 540, fiducials 8390 to 8420, shows similar characteristics although a minor thorium excursion is present. Anomaly 10, on line 3010 fiducials 9820 to 9840, is also characterized by a strong uranium radiation spike, with minor thorium radiation. The uranium/thorium and uranium/potassium ratio anomalies are well defined and relatively intense.

  7. Quantum modulation against electromagnetic interference

    E-Print Network [OSTI]

    Juan Carlos Garcia-Escartin

    2014-11-26T23:59:59.000Z

    Periodic signals in electrical and electronic equipment can cause interference in nearby devices. Randomized modulation of those signals spreads their energy through the frequency spectrum and can help to mitigate electromagnetic interference problems. The inherently random nature of quantum phenomena makes them a good control signal. I present a quantum modulation method based on the random statistics of quantum light. The paper describes pulse width modulation schemes where a Poissonian light source acts as a random control that spreads the energy of the potential interfering signals. I give an example application for switching-mode power supplies and comment the further possibilities of the method.

  8. Electromagnetic properties of massive neutrinos

    SciTech Connect (OSTI)

    Dobrynina, A. A., E-mail: aleksandradobrynina@rambler.ru; Mikheev, N. V.; Narynskaya, E. N. [Demidov Yaroslavl State University (Russian Federation)] [Demidov Yaroslavl State University (Russian Federation)

    2013-10-15T23:59:59.000Z

    The vertex function for a virtual massive neutrino is calculated in the limit of soft real photons. A method based on employing the neutrino self-energy operator in a weak external electromagnetic field in the approximation linear in the field is developed in order to render this calculation of the vertex function convenient. It is shown that the electric charge and the electric dipole moment of the real neutrino are zero; only the magnetic moment is nonzero for massive neutrinos. A fourth-generation heavy neutrino of mass not less than half of the Z-boson mass is considered as a massive neutrino.

  9. 466 IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY, VOL. 51, NO. 3, AUGUST 2009 Electromagnetic Pulses Produced by

    E-Print Network [OSTI]

    Florida, University of

    discharge, lightning electromagnetic (EM) pulse, trav- eling wave, wave reflections. I. INTRODUCTION466 IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY, VOL. 51, NO. 3, AUGUST 2009 Electromagnetic Pulses Produced by Bouncing-Wave-Type Lightning Discharges Amitabh Nag, Member, IEEE, and Vladimir A

  10. Progress In Electromagnetics Research, Vol. 114, 317332, 2011 PULSED BEAM EXPANSION OF ELECTROMAGNETIC

    E-Print Network [OSTI]

    Melamed, Timor

    Progress In Electromagnetics Research, Vol. 114, 317­332, 2011 PULSED BEAM EXPANSION-based pulsed-beams expansion of planar aperture time- dependent electromagnetic fields. The propagating field-beam waveobjects over the frame spectral lattice. Explicit asymptotic expressions for the electromagnetic pulsed

  11. Electromagnetic probes of the QGP

    E-Print Network [OSTI]

    E. L. Bratkovskaya; O. Linnyk; W. Cassing

    2014-09-15T23:59:59.000Z

    We investigate the properties of the QCD matter across the deconfinement phase transition in the scope of the parton-hadron string dynamics (PHSD) transport approach. We present here in particular the results on the electromagnetic radiation, i.e. photon and dilepton production, in relativistic heavy-ion collisions. By comparing our calculations for the heavy-ion collisions to the available data, we determine the relative importance of the various production sources and address the possible origin of the observed strong elliptic flow $v_2$ of direct photons. We argue that the different centrality dependence of the hadronic and partonic sources for direct photon production in nucleus-nucleus collisions can be employed to shed some more light on the origin of the photon $v_2$ "puzzle". While the dilepton spectra at low invariant mass show in-medium effects like an enhancement from multiple baryonic resonance formation or a collisional broadening of the vector meson spectral functions, the dilepton yield at high invariant masses (above 1.1 GeV) is dominated by QGP contributions for central heavy-ion collisions at ultra-relativistic energies. This allows to have an independent view on the parton dynamics via their electromagnetic massive radiation.

  12. Electromagnetically Restrained Lithium Blanket APEX Interim Report November, 1999

    E-Print Network [OSTI]

    California at Los Angeles, University of

    to avoid corrosion or fire. Lithium's high electrical conductivity may possibly permit efficient, compactElectromagnetically Restrained Lithium Blanket APEX Interim Report November, 1999 6-1 CHAPTER 6: ELECTROMAGNETICALLY RESTRAINED LITHIUM BLANKET Contributors Robert Woolley #12;Electromagnetically Restrained Lithium

  13. A glacier inventory for South Tyrol, Italy, based on airborne laser-scanner data

    E-Print Network [OSTI]

    Kerschner, Hanns

    A glacier inventory for South Tyrol, Italy, based on airborne laser-scanner data Christoph KNOLL-mail: christoph.knoll@uibk.ac.at ABSTRACT. A new approach to glacier inventory, based on airborne laser supervision. Earlier inventories, from 1983 and 1997, are used to compare changes in area, volume

  14. Biomass and Bioenergy 31 (2007) 646655 Estimating biomass of individual pine trees using airborne lidar

    E-Print Network [OSTI]

    2007-01-01T23:59:59.000Z

    Biomass and Bioenergy 31 (2007) 646­655 Estimating biomass of individual pine trees using airborne biomass and bio-energy feedstocks. The overall goal of this study was to develop a method for assessing aboveground biomass and component biomass for individual trees using airborne lidar data in forest settings

  15. Entwicklung eines Qualittsmodells fr die Generierung von Digitalen Gelndemodellen aus Airborne Laser Scanning

    E-Print Network [OSTI]

    Giger, Christine

    Laser Scanning Dr. sc. ETH Jürg Lüthy Zürich, 2008 #12;#12;Diese Publikation ist eine editierte Version Geländemodellen aus Airborne Laser Scanning A B H A N D L U N G zur Erlangung des Titels DOKTOR DER WISSENSCHAFTEN Qualitätsmodells für die Generierung von Digitalen Geländemodellen aus Airborne Laser Scanning Copyright © 2008

  16. Evaluation of Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) and Moderate Resolution Imaging Spectrometer

    E-Print Network [OSTI]

    Evaluation of Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) and Moderate Resolution the Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) and the Moderate Resolution Imaging Spectrometer (MODIS). Key goals were to assess the nature of these relationships as they varied between sensors

  17. airborne gamma-ray spectra: Topics by E-print Network

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

    airborne gamma-ray spectra First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Digital Logarithmic Airborne...

  18. Abstract--Airborne pollution and explosive gases threaten human health and occupational safety, therefore generating high

    E-Print Network [OSTI]

    Mason, Andrew

    Abstract--Airborne pollution and explosive gases threaten human health and occupational safety and a thumb-drive sized prototype system. I. INTRODUCTION xposure to air pollution consistently ranks among to occupational safety as energy demands rise. Airborne pollutants and explosive gases vary in both time and space

  19. Prospecting by sampling and analysis of airborne particulates and gases

    DOE Patents [OSTI]

    Sehmel, G.A.

    1984-05-01T23:59:59.000Z

    A method is claimed for prospecting by sampling airborne particulates or gases at a ground position and recording wind direction values at the time of sampling. The samples are subsequently analyzed to determine the concentrations of a desired material or the ratios of the desired material to other identifiable materials in the collected samples. By comparing the measured concentrations or ratios to expected background data in the vicinity sampled, one can select recorded wind directions indicative of the upwind position of the land-based source of the desired material.

  20. Narrow field electromagnetic sensor system and method

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1996-01-01T23:59:59.000Z

    A narrow field electromagnetic sensor system and method of sensing a characteristic of an object provide the capability to realize a characteristic of an object such as density, thickness, or presence, for any desired coordinate position on the object. One application is imaging. The sensor can also be used as an obstruction detector or an electronic trip wire with a narrow field without the disadvantages of impaired performance when exposed to dirt, snow, rain, or sunlight. The sensor employs a transmitter for transmitting a sequence of electromagnetic signals in response to a transmit timing signal, a receiver for sampling only the initial direct RF path of the electromagnetic signal while excluding all other electromagnetic signals in response to a receive timing signal, and a signal processor for processing the sampled direct RF path electromagnetic signal and providing an indication of the characteristic of an object. Usually, the electromagnetic signal is a short RF burst and the obstruction must provide a substantially complete eclipse of the direct RF path. By employing time-of-flight techniques, a timing circuit controls the receiver to sample only the initial direct RF path of the electromagnetic signal while not sampling indirect path electromagnetic signals. The sensor system also incorporates circuitry for ultra-wideband spread spectrum operation that reduces interference to and from other RF services while allowing co-location of multiple electronic sensors without the need for frequency assignments.

  1. Space-time Curvature of Classical Electromagnetism

    E-Print Network [OSTI]

    R. W. M. Woodside

    2004-10-08T23:59:59.000Z

    The space-time curvature carried by electromagnetic fields is discovered and a new unification of geometry and electromagnetism is found. Curvature is invariant under charge reversal symmetry. Electromagnetic field equations are examined with De Rham co homology theory. Radiative electromagnetic fields must be exact and co exact to preclude unobserved massless topological charges. Weyl's conformal tensor, here called ``the gravitational field'', is decomposed into a divergence-free non-local piece with support everywhere and a local piece with the same support as the matter. By tuning a local gravitational field to a Maxwell field the electromagnetic field's local gravitational field is discovered. This gravitational field carries the electromagnetic field's polarization or phase information, unlike Maxwell's stress-energy tensor. The unification assumes Einstein's equations and derives Maxwell's equations from curvature assumptions. Gravity forbids magnetic monopoles! This unification is stronger than the Einstein-Maxwell equations alone, as those equations must produce the electromagnetic field's local gravitational field and not just any conformal tensor. Charged black holes are examples. Curvature of radiative null electromagnetic fields is characterized.

  2. Ultimate Energy Densities for Electromagnetic Pulses

    E-Print Network [OSTI]

    Mankei Tsang

    2008-03-06T23:59:59.000Z

    The ultimate electric and magnetic energy densities that can be attained by bandlimited electromagnetic pulses in free space are calculated using an ab initio quantized treatment, and the quantum states of electromagnetic fields that achieve the ultimate energy densities are derived. The ultimate energy densities also provide an experimentally accessible metric for the degree of localization of polychromatic photons.

  3. Narrow field electromagnetic sensor system and method

    DOE Patents [OSTI]

    McEwan, T.E.

    1996-11-19T23:59:59.000Z

    A narrow field electromagnetic sensor system and method of sensing a characteristic of an object provide the capability to realize a characteristic of an object such as density, thickness, or presence, for any desired coordinate position on the object. One application is imaging. The sensor can also be used as an obstruction detector or an electronic trip wire with a narrow field without the disadvantages of impaired performance when exposed to dirt, snow, rain, or sunlight. The sensor employs a transmitter for transmitting a sequence of electromagnetic signals in response to a transmit timing signal, a receiver for sampling only the initial direct RF path of the electromagnetic signal while excluding all other electromagnetic signals in response to a receive timing signal, and a signal processor for processing the sampled direct RF path electromagnetic signal and providing an indication of the characteristic of an object. Usually, the electromagnetic signal is a short RF burst and the obstruction must provide a substantially complete eclipse of the direct RF path. By employing time-of-flight techniques, a timing circuit controls the receiver to sample only the initial direct RF path of the electromagnetic signal while not sampling indirect path electromagnetic signals. The sensor system also incorporates circuitry for ultra-wideband spread spectrum operation that reduces interference to and from other RF services while allowing co-location of multiple electronic sensors without the need for frequency assignments. 12 figs.

  4. Optimization Material Distribution methodology: Some electromagnetic examples

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    730 1 Optimization Material Distribution methodology: Some electromagnetic examples P. Boissoles, H. Ben Ahmed, M. Pierre, B. Multon Abstract--In this paper, a new approach towards Optimization Material to be highly adaptive to various kinds of electromagnetic actuator optimization approaches. Several optimal

  5. Noninvasive valve monitor using alternating electromagnetic field

    DOE Patents [OSTI]

    Eissenberg, David M. (Oak Ridge, TN); Haynes, Howard D. (Knoxville, TN); Casada, Donald A. (Knoxville, TN)

    1993-01-01T23:59:59.000Z

    One or more electrical coils are carefully located on the outside of a valve body. An alternating current passing through the coil(s) results in an alternating electromagnetic field being transmitted into the valve body and valve internals. The electromagnetic field varies in intensity and polarity in the valve. As the position of a valve internal part is changed, the electromagnetic field throughout the valve body and its internals is altered. A passive receiver coil carefully located on the outside of the valve body detects the intensity of the electromagnetic field at that location as an induced electrical voltage in the coil. With the change in position of the valve internal part, there is a corresponding change in the induced voltage as a result of the alteration in the alternating electromagnetic field at that location. Changes in the voltage provide an indication of the position and motion of valve internals.

  6. An electromagnetic black hole made of metamaterials

    E-Print Network [OSTI]

    Cheng, Qiang

    2009-01-01T23:59:59.000Z

    Traditionally, a black hole is a region of space with huge gravitational field in the means of general relativity, which absorbs everything hitting it including the light. In general relativity, the presence of matter-energy densities results in the motion of matter propagating in a curved spacetime1, which is similar to the electromagnetic-wave propagation in a curved space and in an inhomogeneous metamaterial2. Hence one can simulate the black hole using electromagnetic fields and metamaterials. In a recent theoretical work, an optical black hole has been proposed based on metamaterials, in which the numerical simulations showed a highly efficient light absorption3. Here we report the first experimental demonstration of electromagnetic black hole in the microwave frequencies. The proposed black hole is composed of non-resonant and resonant metamaterial structures, which can absorb electromagnetic waves efficiently coming from all directions due to the local control of electromagnetic fields. Hence the elect...

  7. A Relaxation Strategy for the Optimization of Airborne Wind Energy Sebastien Gros, M. Zanon and Moritz Diehl

    E-Print Network [OSTI]

    A Relaxation Strategy for the Optimization of Airborne Wind Energy Systems S´ebastien Gros, M. Zanon and Moritz Diehl Abstract-- Optimal control is recognized by the Airborne Wind Energy (AWE problem. Keywords : airborne wind energy, optimal control, non- convex optimization, flight control I

  8. applied computational electromagnetics: Topics by E-print Network

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

    Electromagnetics Geosciences Websites Summary: Max Optics, Inc. 12;MadMax Optics 2 Stealth Electromagnetic interference Antennas on complex platformsFMM Code...

  9. The CLAS Forward Electromagnetic Calorimeter

    SciTech Connect (OSTI)

    M. Amarian; Geram Asryan; Kevin Beard; Will Brooks; Volker Burkert; Tom Carstens; Alan Coleman; Raphael Demirchyan; Yuri Efremenko; Hovanes Egiyan; Kim Egiyan; Herb Funsten; Vladimir Gavrilov; Kevin L. Giovanetti; R.M. Marshall; Berhard Mecking; R.C. Minehart; H. Mkrtchan; Mavrik Ohandjanyan; Youri Sharabian; L.C. Smith; Stepan Stepanyan; W.A. Stephens; T.Y. Tung; Carl Zorn

    2001-05-01T23:59:59.000Z

    The CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab utilizes six iron-free superconducting coils to provide an approximately toroidal magnetic field. The six sectors are instrumented individually to form six independent spectrometers. The forward region (8deg < (theta) < 45deg) of each sector is equipped with a lead-scintillator electromagnetic sampling calorimeter (EC), 16 radiation lengths thick, using a novel triangular geometry with stereo readout. With its good energy and position resolution, the EC is used to provide the primary electron trigger for CLAS. It is also used to reject pions, reconstruct pi-0 and eta decays and detect neutrons, This paper treats the design, construction and performance of the calorimeter.

  10. Counting energy packets in the electromagnetic wave

    E-Print Network [OSTI]

    Stefan Popescu; Bernhard Rothenstein

    2007-05-18T23:59:59.000Z

    We discuss the concept of energy packets in respect to the energy transported by electromagnetic waves and we demonstrate that this physical quantity can be used in physical problems involving relativistic effects. This refined concept provides results compatible to those obtained by simpler definition of energy density when relativistic effects apply to the free electromagnetic waves. We found this concept further compatible to quantum theory perceptions and we show how it could be used to conciliate between different physical approaches including the classical electromagnetic wave theory, the special relativity and the quantum theories.

  11. Electrical wire insulation and electromagnetic coil

    DOE Patents [OSTI]

    Bich, George J. (Penn Hills, PA); Gupta, Tapan K. (Monroeville, PA)

    1984-01-01T23:59:59.000Z

    An electromagnetic coil for high temperature and high radiation application in which glass is used to insulate the electrical wire. A process for applying the insulation to the wire is disclosed which results in improved insulation properties.

  12. Advances in non-planar electromagnetic prototyping

    E-Print Network [OSTI]

    Ehrenberg, Isaac M

    2013-01-01T23:59:59.000Z

    The advent of metamaterials has introduced new ways to manipulate how electromagnetic waves reflect, refract and radiate in systems where the range of available material properties now includes negative permittivity, ...

  13. Dynamic programming applied to electromagnetic satellite actuation

    E-Print Network [OSTI]

    Eslinger, Gregory John

    2013-01-01T23:59:59.000Z

    Electromagnetic formation flight (EMFF) is an enabling technology for a number of space mission architectures. While much work has been done for EMFF control for large separation distances, little work has been done for ...

  14. Nonlocal theory of electromagnetic wave decay into two electromagnetic waves in a rippled density plasma channel

    SciTech Connect (OSTI)

    Sati, Priti; Tripathi, V. K. [Indian Institute of Technology, Hauz Khas, Delhi 110054 (India)

    2012-12-15T23:59:59.000Z

    Parametric decay of a large amplitude electromagnetic wave into two electromagnetic modes in a rippled density plasma channel is investigated. The channel is taken to possess step density profile besides a density ripple of axial wave vector. The density ripple accounts for the momentum mismatch between the interacting waves and facilitates nonlinear coupling. For a given pump wave frequency, the requisite ripple wave number varies only a little w.r.t. the frequency of the low frequency decay wave. The radial localization of electromagnetic wave reduces the growth rate of the parametric instability. The growth rate decreases with the frequency of low frequency electromagnetic wave.

  15. Characterization of electromagnetic transients in power substations

    E-Print Network [OSTI]

    Goers, William Chester

    1980-01-01T23:59:59.000Z

    CHARACTERIZATION OF ELECTROMAGNETIC TRANSIENTS IN POWER SUBSTATIONS A Thesis by WILLIAM CHESTER CiOERS, JR. Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE December 1980 Major Subject: Electrical Engineering CHARACTERIZATION OF ELECTROMAGNETIC TRANSIENTS IN POWER SUBSTATIONS A Thesis by WILLIAM CHESTER GOERS, JR. Approved as to style and content by: Dr. B. Don Russell (Chairman of Committee...

  16. Method for measuring the size distribution of airborne rhinovirus

    SciTech Connect (OSTI)

    Russell, M.L.; Goth-Goldstein, R.; Apte, M.G.; Fisk, W.J.

    2002-01-01T23:59:59.000Z

    About 50% of viral-induced respiratory illnesses are caused by the human rhinovirus (HRV). Measurements of the concentrations and sizes of bioaerosols are critical for research on building characteristics, aerosol transport, and mitigation measures. We developed a quantitative reverse transcription-coupled polymerase chain reaction (RT-PCR) assay for HRV and verified that this assay detects HRV in nasal lavage samples. A quantitation standard was used to determine a detection limit of 5 fg of HRV RNA with a linear range over 1000-fold. To measure the size distribution of HRV aerosols, volunteers with a head cold spent two hours in a ventilated research chamber. Airborne particles from the chamber were collected using an Andersen Six-Stage Cascade Impactor. Each stage of the impactor was analyzed by quantitative RT-PCR for HRV. For the first two volunteers with confirmed HRV infection, but with mild symptoms, we were unable to detect HRV on any stage of the impactor.

  17. Initial assessment of an airborne Ku-band polarimetric SAR.

    SciTech Connect (OSTI)

    Raynal, Ann Marie; Doerry, Armin Walter

    2013-02-01T23:59:59.000Z

    Polarimetric synthetic aperture radar (SAR) has been used for a variety of dual-use research applications since the 1940's. By measuring the direction of the electric field vector from radar echoes, polarimetry may enhance an analyst's understanding of scattering effects for both earth monitoring and tactical surveillance missions. Polarimetry may provide insight into surface types, materials, or orientations for natural and man-made targets. Polarimetric measurements may also be used to enhance the contrast between scattering surfaces such as man-made objects and their surroundings. This report represents an initial assessment of the utility of, and applications for, polarimetric SAR at Ku-band for airborne or unmanned aerial systems.

  18. Airborne Multisensor Pod System (AMPS) data management overview

    SciTech Connect (OSTI)

    Wiberg, J.D.; Blough, D.K.; Daugherty, W.R.; Hucks, J.A.; Gerhardstein, L.H.; Meitzler, W.D.; Melton, R.B.; Shoemaker, S.V.

    1994-09-01T23:59:59.000Z

    An overview of the Data Management Plan for the Airborne Multisensor Pod System (AMPS) pro-grain is provided in this document. The Pacific Northwest Laboratory (PNL) has been assigned the responsibility of data management for the program, which includes defining procedures for data management and data quality assessment. Data management is defined as the process of planning, acquiring, organizing, qualifying and disseminating data. The AMPS program was established by the U.S. Department of Energy (DOE), Office of Arms Control and Non-Proliferation (DOE/AN) and is integrated into the overall DOE AN-10.1 technology development program. Sensors used for collecting the data were developed under the on-site inspection, effluence analysis, and standoff sensor program, the AMPS program interacts with other technology programs of DOE/NN-20. This research will be conducted by both government and private industry. AMPS is a research and development program, and it is not intended for operational deployment, although the sensors and techniques developed could be used in follow-on operational systems. For a complete description of the AMPS program, see {open_quotes}Airborne Multisensor Pod System (AMPS) Program Plan{close_quotes}. The primary purpose of the AMPS is to collect high-quality multisensor data to be used in data fusion research to reduce interpretation problems associated with data overload and to derive better information than can be derived from any single sensor. To collect the data for the program, three wing-mounted pods containing instruments with sensors for collecting data will be flight certified on a U.S. Navy RP-3A aircraft. Secondary objectives of the AMPS program are sensor development and technology demonstration. Pod system integrators and instrument developers will be interested in the performance of their deployed sensors and their supporting data acquisition equipment.

  19. Preliminary geothermal assessment surveys for the State of Hawaii

    SciTech Connect (OSTI)

    Thomas, D.M.; Cox, M.E.; Lienert, B.R.; Kauahikaua, J.P.; Mattice, M.D.

    1980-09-01T23:59:59.000Z

    The Geothermal Resource Assessment Program of the Hawaii Institute of Geophysics has conducted a series of geochemical and geophysical surveys in ten separate locations within the State of Hawaii in an effort to identify and assess potential geothermal areas throughout the state. The techniques applied include groundwater chemistry and temperatures, soil mercury surveys, ground radon emanometry, time-domain electromagnetic surveys and Schlumberger resistivity soundings. Although geochemical and geophysical anomalies were identified in nearly all the survey sites, those areas which show most promise, based on presently available data, for a geothermal resource are as follows: Puna, Kailua Kona, and Kawaihae on the island of Hawaii; Haiku-Paia and Olowalu-Ukumehame canyons on Maui; and Lualualei Valley on Oahu. Further surveys are planned for most of these areas in order to further define the nature of the thermal resource present.

  20. 2010 Employee Survey Acknowledgements

    E-Print Network [OSTI]

    Eisen, Michael

    conducted for Postdocs and Operations employees; this year's survey was a Lab-wide survey of the Lab2010 Employee Survey May 2010 #12;Acknowledgements TheBerkeleyLab Survey Team consisted Associates has conducted a number of large-scale surveys for organizations in higher education, including MIT

  1. AIRBORNE, OPTICAL REMOTE SENSNG OF METHANE AND ETHANE FOR NATURAL GAS PIPELINE LEAK DETECTION

    SciTech Connect (OSTI)

    Jerry Myers

    2005-04-15T23:59:59.000Z

    Ophir Corporation was awarded a contract by the U. S. Department of Energy, National Energy Technology Laboratory under the Project Title ''Airborne, Optical Remote Sensing of Methane and Ethane for Natural Gas Pipeline Leak Detection'' on October 14, 2002. The scope of the work involved designing and developing an airborne, optical remote sensor capable of sensing methane and, if possible, ethane for the detection of natural gas pipeline leaks. Flight testing using a custom dual wavelength, high power fiber amplifier was initiated in February 2005. Ophir successfully demonstrated the airborne system, showing that it was capable of discerning small amounts of methane from a simulated pipeline leak. Leak rates as low as 150 standard cubic feet per hour (scf/h) were detected by the airborne sensor.

  2. Design and development of an airborne microwave radiometer for atmospheric sensing

    E-Print Network [OSTI]

    Scarito, Michael P

    2011-01-01T23:59:59.000Z

    Satellite-based passive microwave remote sensing is a valuable tool for global weather monitoring and prediction. This thesis presents the design and development of a low-cost airborne weather sensing instrument to ...

  3. The metal content of airborne particles in Edinburgh: application to epidemiological research 

    E-Print Network [OSTI]

    Hibbs, L R; Beverland, Iain J; Heal, Mathew R; Agius, Raymond M; Elton, Robert A; Fowler, D; Cape, Neil

    2002-01-01T23:59:59.000Z

    Metals are putative causative agents in the association between ill health and exposure to airborne particles. We present preliminary results from an epidemiological study using exposure metrics of metal contained in ...

  4. Modeling Plot-Level Biomass and Volume Using Airborne and Terrestrial Lidar Measurements

    E-Print Network [OSTI]

    Sheridan, Ryan D.

    2012-07-16T23:59:59.000Z

    The United States Forest Service (USFS) Forest Inventory and Analysis (FIA) program provides a diverse selection of data used to assess the status of the nation’s forested areas using sample locations dispersed throughout the country. Airborne...

  5. New Chemical Aerosol Characterization Methods- Examples Using Agricultural and Urban Airborne Particulate Matter

    E-Print Network [OSTI]

    Zhou, Lijun

    2010-10-12T23:59:59.000Z

    This study explored different chemical characterization methods of agricultural and urban airborne particulate matter. Three different field campaigns are discussed. For the agricultural aerosols, measurement of the chemical composition of size...

  6. Multisensor Fusion of Ground-based and Airborne Remote Sensing Data for Crop Condition Assessment

    E-Print Network [OSTI]

    Zhang, Huihui

    2012-02-14T23:59:59.000Z

    In this study, the performances of the optical sensors and instruments carried on both ground-based and airborne platforms were evaluated for monitoring crop growing status, detecting the vegetation response to aerial applied herbicides...

  7. Design of a small fast steering mirror for airborne and aerospace applications

    E-Print Network [OSTI]

    Boulet, Michael Thomas

    2008-01-01T23:59:59.000Z

    This thesis presents the analysis and design of a small advanced fast steering mirror (sAFSM) for airborne and aerospace platforms. The sAFSM provides feedback-controlled articulation of two rotational axes for precision ...

  8. Algorithms and Software Tools for Extracting Coastal Morphological Information from Airborne LiDAR Data

    E-Print Network [OSTI]

    Gao, Yige

    2010-07-14T23:59:59.000Z

    ALGORITHMS AND SOFTWARE TOOLS FOR EXTRACTING COASTAL MORPHOLOGICAL INFORMATION FROM AIRBORNE LiDAR DATA A Thesis by YIGE GAO Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE May 2009 Major Subject: Geography ALGORITHMS AND SOFTWARE TOOLS FOR EXTRACTING COASTAL MORPHOLOGICAL INFORMATION FROM AIRBORNE LiDAR DATA A Thesis by YIGE GAO...

  9. An investigation of three problems concerning the analysis of airborne asphalt fumes

    E-Print Network [OSTI]

    Laird, Larry Teal

    1981-01-01T23:59:59.000Z

    AN INVESTIGATION OF THREE PROBLEMS CONCERNING THE ANALYSIS OF AIRBORNE ASPHALT FUMES A Thesis by LARRY TEAL LAIRD Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE May 1981 Major Subject: Industrial Hygiene AN INVESTIGATION OF THREE PROBLEMS CONCERNING THE ANALYSIS OF AIRBORNE ASPHALT FUMES A Thesis by LARRY T. LAIRD Approved as to style and content by: (Chairm of Committee) (Head of Department...

  10. Literature survey

    SciTech Connect (OSTI)

    Pillay, K.K.S. (Los Alamos National Lab., Los Alamos, NM (US))

    1988-07-01T23:59:59.000Z

    The residential amount(s) of fissionable materials remaining in process equipment after the runout of bulk materials processed is referred to as ''Process Holdup of Special Nuclear Materials.'' Locating regions of holdup and estimating the quantity of fissile materials remaining as holdup are important not only to materials accountability but also to process safety. Holdup is often referred to as a ''Hidden Inventory.'' In materials accounting terminology, hidden inventories are part of ''Materials Unaccounted For'' (MUF) or ''Inventory Difference'' (ID). MUF or ID could be construed as ''Loss'' or ''Diversion''. From a safeguards perspective, all these designations are undesirable. Another terminology that is relevant to holdup is ''In-Process Inventory.'' During process operations and temporary shutdown, the holdup within the facility is also known as the in-process inventory. Estimating this inventory is just as challenging as residuals after process runout. The role of hidden inventories, or holdup, as a safeguards problem is now recognized by almost everyone interested in establishing effective safeguards for special nuclear materials. As part of this effort to organize the first INMM-sponsored Technical Workshop on Process Holdup of Special Nuclear Materials, an attempt was made to update an earlier survey of open literature publications of relevance to holdup. An attempt was made to exclude from this list those documents recognized as internal documents, progress reports, preliminary reports, abstracts, etc.

  11. Susceptibility of digital instrumentation and control systems to disruption by electromagnetic interference

    SciTech Connect (OSTI)

    Kercel, S.W.; Korsah, K.; Wood, R.T.

    1997-10-01T23:59:59.000Z

    The potential for disruption of safety-related digital instrumentation and control (I and C) systems by electromagnetic interference/radio-frequency interface (EMI/RFI) bears directly on the safe operation of advanced reactors. It is anticipated that the use of digital I and C equipment for safety and control functions will be substantially greater for advanced reactor designs than for current-generation nuclear reactors, which primarily use analog I and C equipment. In the absence of significant operational experience, the best available indication of the potential vulnerability of advanced digital safety systems to EMI/RFI comes from environmental testing of an experimental digital safety channel (EDSC) by the Oak Ridge National Laboratory (ORNL). The EDSC is a prototypical system representative of advanced reactor safety system designs with regard to architecture, functionality and communication protocols, and board and component fabrication technologies. An understanding of the electromagnetic environment to be expected for advanced reactors can be drawn from ORNL`s survey of ambient EMI/RFI conditions in the current generation of nuclear power plants. A summary of the results from these research efforts is reported in this paper. The lessons learned from the EMI/RFI survey and the EDSC tests contribute significantly to determining the best approach to assuring electromagnetic compatibility for the safety-related I and C systems of advanced reactors.

  12. Copositive Programming – a Survey

    E-Print Network [OSTI]

    2010-11-01T23:59:59.000Z

    Copositive Programming – a Survey. Mirjam Dür ... The purpose of this survey is to introduce the ...... Methods of Operations Research 62(1990): 45–52.

  13. Massless Dirac Fermions in Electromagnetic Field

    E-Print Network [OSTI]

    Ahmed Jellal; Abderrahim El Mouhafid; Mohammed Daoud

    2012-02-12T23:59:59.000Z

    We study the relations between massless Dirac fermions in an electromagnetic field and atoms in quantum optics. After getting the solutions of the energy spectrum, we show that it is possible to reproduce the 2D Dirac Hamiltonian, with all its quantum relativistic effects, in a controllable system as a single trapped ion through the Jaynes--Cummings and anti-Jaynes--Cummings models. Also we show that under certain conditions the evolution of the Dirac Hamiltonian provides us with Rashba spin-orbit and linear Dresselhaus couplings. Considering the multimode multiphoton Jaynes-Cummings model interacting with N modes of electromagnetic field prepared in general pure quantum states, we analyze the Rabi oscillation. Evaluating time evolution of the Dirac position operator, we determine the Zitterbewegung frequency and the corresponding oscillating term as function of the electromagnetic field.

  14. Robotic Surveying

    SciTech Connect (OSTI)

    Suzy Cantor-McKinney; Michael Kruzic

    2007-03-01T23:59:59.000Z

    ZAPATA ENGINEERING challenged our engineers and scientists, which included robotics expertise from Carnegie Mellon University, to design a solution to meet our client's requirements for rapid digital geophysical and radiological data collection of a munitions test range with no down-range personnel. A prime concern of the project was to minimize exposure of personnel to unexploded ordnance and radiation. The field season was limited by extreme heat, cold and snow. Geographical Information System (GIS) tools were used throughout this project to accurately define the limits of mapped areas, build a common mapping platform from various client products, track production progress, allocate resources and relate subsurface geophysical information to geographical features for use in rapidly reacquiring targets for investigation. We were hopeful that our platform could meet the proposed 35 acres per day, towing both a geophysical package and a radiological monitoring trailer. We held our breath and crossed our fingers as the autonomous Speedrower began to crawl across the playa lakebed. We met our proposed production rate, and we averaged just less than 50 acres per 12-hour day using the autonomous platform with a path tracking error of less than +/- 4 inches. Our project team mapped over 1,800 acres in an 8-week (4 days per week) timeframe. The expertise of our partner, Carnegie Mellon University, was recently demonstrated when their two autonomous vehicle entries finished second and third at the 2005 Defense Advanced Research Projects Agency (DARPA) Grand Challenge. 'The Grand Challenge program was established to help foster the development of autonomous vehicle technology that will some day help save the lives of Americans who are protecting our country on the battlefield', said DARPA Grand Challenge Program Manager, Ron Kurjanowicz. Our autonomous remote-controlled vehicle (ARCV) was a modified New Holland 2550 Speedrower retrofitted to allow the machine-actuated functions to be controlled by an onboard computer. The computer-controlled Speedrower was developed at Carnegie Mellon University to automate agricultural harvesting. Harvesting tasks require the vehicle to cover a field using minimally overlapping rows at slow speeds in a similar manner to geophysical data acquisition. The Speedrower had demonstrated its ability to perform as it had already logged hundreds of acres of autonomous harvesting. This project is the first use of autonomous robotic technology on a large-scale for geophysical surveying.

  15. Electromagnetic continuous casting project: Final report

    SciTech Connect (OSTI)

    Battles, J.E.; Rote, D.M.; Misra, B.; Praeg, W.F.; Hull, J.R.; Turner, L.R.; Shah, V.L.; Lari, R.J.; Gopalsami, N.; Wiencek, T.

    1988-10-01T23:59:59.000Z

    This report describes the work on development of an electromagnetic casting process for steel, which was carried out at Argonne National Laboratory between January 1985 and December 1987. This effort was concerned principally with analysis and design work on magnet technology, liquid metal feed system, coolant system, and sensors and process controllers. Experimentation primarily involved (1) electromagnetic studies to determine the conditions and controlling parameters for stable levitation and (2) feed-system studies to establish important parameters that control and influence fluid flow from the liquid metal source to the caster. 73 refs., 91 figs., 11 tabs.

  16. Scanning evanescent electro-magnetic microscope

    DOE Patents [OSTI]

    Xiang, Xiao-Dong (Alameda, CA); Gao, Chen (Anhui, CN); Schultz, Peter G. (La Jolla, CA); Wei, Tao (Sunnyvale, CA)

    2003-01-01T23:59:59.000Z

    A novel scanning microscope is described that uses near-field evanescent electromagnetic waves to probe sample properties. The novel microscope is capable of high resolution imaging and quantitative measurements of the electrical properties of the sample. The inventive scanning evanescent wave electromagnetic microscope (SEMM) can map dielectric constant, tangent loss, conductivity, complex electrical impedance, and other electrical parameters of materials. The quantitative map corresponds to the imaged detail. The novel microscope can be used to measure electrical properties of both dielectric and electrically conducting materials.

  17. Scanning evanescent electro-magnetic microscope

    DOE Patents [OSTI]

    Xiang, Xiao-Dong (Alameda, CA); Gao, Chen (Alameda, CA)

    2001-01-01T23:59:59.000Z

    A novel scanning microscope is described that uses near-field evanescent electromagnetic waves to probe sample properties. The novel microscope is capable of high resolution imaging and quantitative measurements of the electrical properties of the sample. The inventive scanning evanescent wave electromagnetic microscope (SEMM) can map dielectric constant, tangent loss, conductivity, complex electrical impedance, and other electrical parameters of materials. The quantitative map corresponds to the imaged detail. The novel microscope can be used to measure electrical properties of both dielectric and electrically conducting materials.

  18. Forces in electromagnetic field and gravitational field

    E-Print Network [OSTI]

    Zihua Weng

    2011-03-31T23:59:59.000Z

    The force can be defined from the linear momentum in the gravitational field and electromagnetic field. But this definition can not cover the gradient of energy. In the paper, the force will be defined from the energy and torque in a new way, which involves the gravitational force, electromagnetic force, inertial force, gradient of energy, and some other new force terms etc. One of these new force terms can be used to explain why the solar wind varies velocity along the magnetic force line in the interplanetary space between the sun and the earth.

  19. Bioelectromagnetic effects of the electromagnetic pulse (EMP)

    SciTech Connect (OSTI)

    Patrick, E.L.; Vault, W.L.

    1990-03-01T23:59:59.000Z

    The public has expressed concern about the biological effects and hazards of non-ionizing electromagnetic fields produced by the electro-magnetic pulse (EMP) simulators that simulate the EMP emanating from a high-altitude nuclear explosion. This paper provides a summary of the bioelectromagnetic effects literature up through the present, describes current occupational standards for workers exposed to the EMP environment, and discusses the use of medical surveillance as it relates to the potential human health hazards associated with exposure to the EMP environment.

  20. Airborne radioactive effluent study at the Savannah River Plant

    SciTech Connect (OSTI)

    Blanchard, R.L.; Broadway, J.A.; Sensintaffar, E.L.; Kirk, W.P.; Kahn, B.; Garrett, A.J.

    1984-07-01T23:59:59.000Z

    Under the Clean Air Act, Sections 112 and 122 as amended in 1977, the Office of Radiation Programs (OPR) of the United States Environmental Protection Agency is currently developing standards for radionuclides emitted to the air by several source categories. In order to confirm source-term measurements and pathway calculations for radiation exposures to humans offsite, the ORP performs field studies at selected facilities that emit radionuclides. This report describes the field study conducted at the Savannah River Plant (SRP), a laboratory operated by E.I. du Pont de Nemours and Company for the US Department of Energy. This purpose of the study at ARP was to verify reported airborne releases and resulting radiation doses from the facility. Measurements of radionuclide releases for brief periods were compared with measurements performed by SRP staff on split samples and with annual average releases reported by SRP for the same facilities. The dispersion model used by SRP staff to calculate radiation doses offsite was tested by brief environmental radioactivity measurements performed simultaneously with the release measurements, and by examining radioactivity levels in environmental samples. This report describes in detail all measurements made and data collected during the field study and presents the results obtained. 34 references, 18 figures, 49 tables.

  1. Design and calibration of the PHARUS polarimetric airborne SAR

    SciTech Connect (OSTI)

    Snoeij, P. [Delft Univ. of Technology, Delft (Netherlands); Hoogeboom, P.; Koomen, P.J. [and others

    1996-11-01T23:59:59.000Z

    The PHARUS system uses a phased array antenna with solid state amplifiers. The project consisted of two phases, a definition phase and a realization phase. The definition phase consisted of the actual realization of a SAR research system called PHARS, which made its first successful testflight in November 1990. The research system is based on the concept of a wide beamwidth antenna, rigidly fixed to the aircraft. Pulse compression and a high PRF ensure sufficient sensitivity in this system, which is equipped with a 160 Watt peak pulse power solid state transmitter. The processing is done off-line. In the realization phase the polarimetric PHARUS system has been developed. The design is based on the experience gained with the PHARS system. The system uses a phased array with dual polarized patch radiators and is equipped with solid state amplifiers. This paper will give an overview of the PHARUS design and operational use. Apart from the use as an advanced polarimetric airborne SAR, there is the perspective of using PHARUS as a demonstrator for ESA`s future ASAR system. 2 refs., 2 figs., 1 tab.

  2. STEP Participant Survey Report

    Broader source: Energy.gov [DOE]

    STEP Participant Survey Report, from the Tool Kit Framework: Small Town University Energy Program (STEP).

  3. REMOTE SENSING GEOLOGICAL SURVEY

    E-Print Network [OSTI]

    -ASTER that operate in visible, near infrared and short wave infrared wavelengths of electromagnetic spectrum and Reflection Radiometer) Imagery Collection in CPRM Examples of sensors used in the CPRM geologic projects #12

  4. Passive electromagnetic damping device for motion control of building structures

    E-Print Network [OSTI]

    Palomera-Arias, Rogelio, 1972-

    2005-01-01T23:59:59.000Z

    The research presented in this thesis develops a new device for the passive control of motion in building structures: an electromagnetic damper. The electromagnetic damper is a self-excited device that provides a reaction ...

  5. Reflection and Transmission of Pulsed Electromagnetic Fields through Multilayered

    E-Print Network [OSTI]

    Oughstun, Kurt

    Reflection and Transmission of Pulsed Electromagnetic Fields through Multilayered Biological Media- cally rigorous, physically correct description of the propagation of pulsed electromagnetic fields pulses through multilayered biological media consisting of three biological tissue layers rep- resenting

  6. Electromagnetically induced transparency with broadband laser pulses D. D. Yavuz

    E-Print Network [OSTI]

    Yavuz, Deniz

    Electromagnetically induced transparency with broadband laser pulses D. D. Yavuz Department pulses inside an atomic medium using electromag- netically induced transparency. Extending the suggestion.65. k Over the last decade, counterintuitive optical effects using electromagnetically induced

  7. Mathematical Methods for Electromagnetic and Optical Waves1

    E-Print Network [OSTI]

    Lu, Ya Yan

    Mathematical Methods for Electromagnetic and Optical Waves1 Ya Yan Lu Department of Mathematics . . . . . . . . . . . . . . . . . . . . . . 5 1.6 The energy law of electromagnetic field . . . . . . . . . . . . . . . . . . . . . 7 2.5 Pulse propagation and temporal solitons . . . . . . . . . . . . . . . . . . . . . 70 2 #12;Chapter 1

  8. Waveguide-based Ultrasonic and Far-field Electromagnetic Sensors...

    Office of Environmental Management (EM)

    ultrasonic and farfield electromagnetic sensors to measure key Enhanced Geothermal Systems (EGS) reservoir parameters, including directional temperature, pressure,...

  9. Motor Packaging with Consideration of Electromagnetic and Material...

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

    Documents & Publications Motor Packaging with Consideration of Electromagnetic and Material Characteristics Alnico and Ferrite Hybrid Excitation Electric Machines Wireless Charging...

  10. Structural composites with integrated electromagnetic functionality

    E-Print Network [OSTI]

    Nemat-Nasser, Sia

    Structural composites with integrated electromagnetic functionality Syrus C. Nemat-Nasser, Alireza, such as wires, into polymer-based or ceramic-based composites. In addition to desired structural properties, these materials may be leveraged for active tasks such as filtering. The advantages of such hybrid composites

  11. Electromagnetic Composites at the Compton Scale

    E-Print Network [OSTI]

    Frederick J. Mayer; John R. Reitz

    2011-09-10T23:59:59.000Z

    A new class of electromagnetic composite particles is proposed. The composites are very small (the Compton scale), potentially long-lived, would have unique interactions with atomic and nuclear systems, and, if they exist, could explain a number of otherwise anomalous and conflicting observations in diverse research areas.

  12. Electromagnetic Wellbore Heating Ibrahim Agyemang1

    E-Print Network [OSTI]

    Bohun, C. Sean

    Chapter 5 Electromagnetic Wellbore Heating Ibrahim Agyemang1 , Matthew Bolton2 , Lloyd Bridge2 with the recovery of petroleum fluids from an oil reservoir using electrical energy. By its very nature this problem must deal with both the equations that describe the fluid flow as well as the heat flow equations

  13. Electromagnetic Radiation and Motion of Real Particle

    E-Print Network [OSTI]

    Jozef Klacka

    2001-06-21T23:59:59.000Z

    Relativistically covariant equation of motion for real dust particle under the action of electromagnetic radiation is derived. The particle is neutral in charge. Equation of motion is expressed in terms of particle's optical properties, standardly used in optics for stationary particles.

  14. Turbulent Transition in an Electromagnetically Levitated Droplet

    E-Print Network [OSTI]

    Mountziaris, T. J.

    Turbulent Transition in an Electromagnetically Levitated Droplet Christina R. Rizer, Robert W a marked transition from laminar to turbulent flow, which can be observed by following the movement, will oscillate and break apart, marking the transition to turbulence. Using videos taken of these metal samples

  15. FMM Code Libraries for Computational Electromagnetics

    E-Print Network [OSTI]

    Maryland at College Park, University of

    Max Optics, Inc. #12;MadMax Optics 2 · Stealth · Electromagnetic interference · Antennas on complex platforms ­ Closed and open surfaces, complex materials · Fast, Direct Solvers for Ill-Conditioned Problems ­ handle isotropic materials with closed surfaces ­ Open surfaces still active area of research · Geometric

  16. Optimizing Electromagnetic Hotspots in Plasmonic Bowtie Nanoantennae

    E-Print Network [OSTI]

    Xiong, Qihua

    Optimizing Electromagnetic Hotspots in Plasmonic Bowtie Nanoantennae Stephanie Dodson, Mohamed: Sensitivity is a key factor in the improvement of nanoparticle-based biosensors. Bowtie nanoantennae have resonance (LSPR)-based biosensing. In this work, optical bowtie nanoantennae with varying geometries were

  17. Decomposition of Electromagnetic Q and P Media

    E-Print Network [OSTI]

    Lindell, I V

    2015-01-01T23:59:59.000Z

    Two previously studied classes of electromagnetic media, labeled as those of Q media and P media, are decomposed according to the natural decomposition introduced by Hehl and Obukhov. Six special cases based on either non-existence or sole existence of the three Hehl-Obukhov components, are defined for both medium classes.

  18. Matched slow pulses using double electromagnetically induced transparency

    E-Print Network [OSTI]

    Lvovsky, Alexander

    Matched slow pulses using double electromagnetically induced transparency Andrew MacRae,* Geoff, 2008 We implement double electromagnetically induced transparency (DEIT) in rubidium vapor using Optical Society of America OCIS codes: 270.1670, 270.5585, 190.5530. Electromagnetically induced

  19. Cosmological electromagnetic fields due to gravitational wave perturbations Mattias Marklund*

    E-Print Network [OSTI]

    Dunsby, Peter

    show that this coupling leads to an initial pulse of electromagnetic waves whose width and amplitude to produce a pulse of gravitationally induced electromagnetic waves. In particular, because of the differentCosmological electromagnetic fields due to gravitational wave perturbations Mattias Marklund

  20. Airborne flux measurements of Biogenic Isoprene over California

    SciTech Connect (OSTI)

    Misztal, P.; Karl, Thomas G.; Weber, Robin; Jonsson, H. H.; Guenther, Alex B.; Goldstein, Allen H.

    2014-10-10T23:59:59.000Z

    Biogenic Volatile Organic Compound (BVOC) fluxes were measured onboard the CIRPAS Twin Otter aircraft as part of the California Airborne BVOC Emission Research in Natural Ecosystem Transects (CABERNET) campaign during June 2011. The airborne virtual disjunct eddy covariance (AvDEC) approach used measurements from a PTR-MS and a wind radome probe to directly determine fluxes of isoprene, MVK+MAC, methanol, monoterpenes, and MBO over ~10,000-km of flight paths focusing on areas of California predicted to have the largest emissions of isoprene. The Fast Fourier Transform (FFT) approach was used to calculate fluxes over long transects of more than 15 km, most commonly between 50 and 150 km. The Continuous Wavelet Transformation (CWT) approach was used over the same transects to also calculate "instantaneous" fluxes with localization of both frequency and time independent of non-stationarities. Vertical flux divergence of isoprene is expected due to its relatively short lifetime and was measured directly using "racetrack" profiles at multiple altitudes. It was found to be linear and in the range 5% to 30% depending on the ratio of aircraft altitude to PBL height (z/zi). Fluxes were generally measured by flying consistently 1 at 400 m ±50 m (a.g.l.) altitude, and extrapolated to the surface according to the determined flux divergence. The wavelet-derived surface fluxes of isoprene averaged to 2 km spatial resolution showed good correspondence to Basal Emission Factor (BEF) landcover datasets used to drive biogenic VOC (BVOC) emission models. The surface flux of isoprene was close to zero over Central Valley crops and desert shrublands, but was very high (up to 15 mg m-2 h-1) above oak woodlands, with clear dependence of emissions on temperature and oak density. Isoprene concentrations of up to 8 ppb were observed at aircraft height on the hottest days and over the dominant source regions. While isoprene emissions from agricultural crop regions, shrublands, and coniferous forests were extremely low, high concentrations of methanol and monoterpenes were found above some of these regions. These observations demonstrate the ability to measure fluxes from specific sources by eddy covariance from an aircraft, and suggest the utility of measurements using fast response chemical sensors to constrain emission inventories and map out source distributions for a much broader array of trace gases than was observed in this study. This paper reports the first regional direct eddy covariance fluxes of isoprene. The emissions of VOCs measured from aircraft with 2 km spatial resolution can quantify the distribution of major sources providing the observations required for testing statewide emission inventories of these important trace gases. These measurements will be used in a future study to assess BVOC emission models and their driving variable datasets.

  1. Emissions of airborne toxics from coal-fired boilers: Mercury

    SciTech Connect (OSTI)

    Huang, H.S.; Livengood, C.D.; Zaromb, S.

    1991-09-01T23:59:59.000Z

    Concerns over emissions of hazardous air Pollutants (air toxics) have emerged as a major environmental issue, and the authority of the US Environmental Protection Agency to regulate such pollutants was greatly expanded through the Clean Air Act Amendments of 1990. Mercury has been singled out for particular attention because of concerns over possible effects of emissions on human health. This report evaluates available published information on the mercury content of coals mined in the United States, on mercury emitted in coal combustion, and on the efficacy of various environmental control technologies for controlling airborne emissions. Anthracite and bituminous coals have the highest mean-mercury concentrations, with subbituminous coals having the lowest. However, all coal types show very significant variations in mercury concentrations. Mercury emissions from coal combustion are not well-characterized, particularly with regard to determination of specific mercury compounds. Variations in emission rates of more than an order of magnitude have been reported for some boiler types. Data on the capture of mercury by environmental control technologies are available primarily for systems with electrostatic precipitators, where removals of approximately 20% to over 50% have been reported. Reported removals for wet flue-gas-desulfurization systems range between 35 and 95%, while spray-dryer/fabric-filter systems have given removals of 75 to 99% on municipal incinerators. In all cases, better data are needed before any definitive judgments can be made. This report briefly reviews several areas of research that may lead to improvements in mercury control for existing flue-gas-clean-up technologies and summarizes the status of techniques for measuring mercury emissions from combustion sources.

  2. 532 IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY, VOL. 51, NO. 3, AUGUST 2009 Lightning Electromagnetic Field Coupling to

    E-Print Network [OSTI]

    Florida, University of

    of both the incident lightning electromagnetic pulse (LEMP) and the effects of coupling of this field- mental validation using: 1) reduced-scale setups with LEMP and nuclear electromagnetic pulse (NEMP532 IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY, VOL. 51, NO. 3, AUGUST 2009 Lightning

  3. Long-term determination of airborne concentrations of unattached and attached radon progeny using stacked LR 115 detector with

    E-Print Network [OSTI]

    Yu, K.N.

    Long-term determination of airborne concentrations of unattached and attached radon progeny using-term measurements Radon progeny a b s t r a c t We developed the theoretical basis for long-term determination of airborne concentrations of unattached and attached radon progeny. The work was separated into two parts

  4. Comparison of airborne and surface particulate size distributions in specific Hanford Nuclear Facilities

    SciTech Connect (OSTI)

    Ottley, D.B.

    1995-05-01T23:59:59.000Z

    Settled dust from nuclear operations may be contaminated with radionuclides and become resuspended and subsequently breathed. This is the predominate radionuclide inhalation hazard scenario in nuclear facilities that have been deactivated and no longer have liquid in their process systems that may become directly airborne in accident situations. Comparisons were made between indoor ambient airborne particulate size distribution and that of resuspended dust that could become contaminated and subsequently airborne during decommissioning operations at selected nuclear facilities on the Hanford Site. Results indicate that only 5% of the particles, by count, above the breathing zone are greater than ten (10) {mu}m in size and that the particulates that could be resuspended into the breathing zone had a mean aerodynamic equivalent diameter of four (4) {mu}m or less.

  5. HOME OF THE ILLINOIS STATE SCIENTIFIC SURVEYS Illinois Natural History Survey Illinois State Archaeological Survey Illinois State

    E-Print Network [OSTI]

    Bashir, Rashid

    Archaeological Survey · Illinois State Geological Survey · Illinois State Water Survey · Illinois Sustainable

  6. A Survey on Mining Software Survey Presentation

    E-Print Network [OSTI]

    Bae, Doo-Hwan

    ­ Effort Estimation ­ Mining Aspects · Papers at a glance · Related Workshop · Available Resources of mining software archives to support, ­ the maintenance of software systems, ­ improve software designA Survey on Mining Software Archives Survey Presentation Jin Ung, Oh ­ 2007.07.11 #12;Contents

  7. Preliminary calculations on direct heating of a containment atmosphere by airborne core debris

    SciTech Connect (OSTI)

    Pilch, M.; Tarbell, W.W.

    1986-07-01T23:59:59.000Z

    Direct heating of the containment atmosphere by airborne core debris may be a significant source of containment pressurization in those accident sequences where the primary system is still at high pressure when the RPV fails. Vigorous blowdown of the primary system may result in nearly complete relocation of core debris out of the reactor cavity and possibly into the containment atmosphere where the liberation of thermal and chemical energy can directly heat the atmosphere. Rate independent and rate dependent models are developed and exercised parametrically to quantify the possible magnitude and rate of containment pressurization from direct heating. The possible mitigative effects of airborne water and subcompartment heating are also investigated.

  8. NEPA Litigation Surveys

    Broader source: Energy.gov [DOE]

    CEQ publishes surveys on NEPA litigation on an annual basis. These surveys identify the number of cases involving a NEPA based cause of action, Federal agencies that were identified as a lead...

  9. Interpretation of electromagnetic soundings in the Raft River...

    Open Energy Info (EERE)

    (EM) controlled source survey was conducted in the Raft River Valley, near Malta, Idaho. The purpose of the survey was: to field test U.S. Geological Survey...

  10. Development of a laced electromagnetic wiggler

    SciTech Connect (OSTI)

    Christensen, T.C.; Burns, M.J.; Deis, G.A.; Parkison, C.D.; Prosnitz, D.; Halbach, K.

    1987-01-01T23:59:59.000Z

    The laced electromagnetic wiggler is a new concept being developed to attain higher magnetic fields, shorter wavelengths, and larger gaps for the induction-linear accelerator, free-electron-laser (FEL) program. In the laced wiggler design, permanent magnets are located (''laced'') between the electromagnetic coils to increase the reverse-bias flux in the iron pole beyond that possible with only pole-edge (''side'') permanent magnets. This increase in reverse-bias flux allows wiggler operation at midplane magnetic field intensities comparable to those of a hybrid permanent magnet/steel wiggler, but with field adjustability over a specified range. The maximum field intensity and tuning range are selected, within limits, for specific design requirements. We have designed and tested a one-period prototype of this concept with promising results.

  11. Electromagnetic Scattering by Spheres of Topological Insulators

    E-Print Network [OSTI]

    Ge, Lixin; Zi, Jian

    2015-01-01T23:59:59.000Z

    The electromagnetic scattering properties of topological insulator (TI) spheres are systematically studied in this paper. Unconventional backward scattering caused by the topological magneto-electric (TME) effect of TIs are found in both Rayleigh and Mie scattering regimes. This enhanced backward scattering can be achieved by introducing an impedance-matched background which can suppress the bulk scattering. For the cross-polarized scattering coefficients, interesting antiresonances are found in the Mie scattering regime, wherein the cross-polarized electromagnetic fields induced by the TME effect are trapped inside TI spheres. In the Rayleigh limit, the quantized TME effect of TIs can be determined by measuring the electric-field components of scattered waves in the far field.

  12. Fluidic electrodynamics: Approach to electromagnetic propulsion

    SciTech Connect (OSTI)

    Martins, Alexandre A.; Pinheiro, Mario J. [Institute for Plasmas and Nuclear Fusion and Instituto Superior Tecnico Lisboa, Portugal 351.1.21.841.92.43 (Portugal); Department of Physics and Institute for Plasmas and Nuclear Fusion and Instituto Superior Tecnico Lisboa, Portugal 351.1.21.841.93.22 (Portugal)

    2009-03-16T23:59:59.000Z

    We report on a new methodological approach to electrodynamics based on a fluidic viewpoint. We develop a systematic approach establishing analogies between physical magnitudes and isomorphism (structure-preserving mappings) between systems of equations. This methodological approach allows us to give a general expression for the hydromotive force, thus re-obtaining the Navier-Stokes equation departing from the appropriate electromotive force. From this ground we offer a fluidic approach to different kinds of issues with interest in propulsion, e.g., the force exerted by a charged particle on a body carrying current; the magnetic force between two parallel currents; the Magnus's force. It is shown how the intermingle between the fluid vector fields and electromagnetic fields leads to new insights on their dynamics. The new concepts introduced in this work suggest possible applications to electromagnetic (EM) propulsion devices and the mastery of the principles of producing electric fields of required configuration in plasma medium.

  13. Electromagnetic Pulse from Final Gravitational Stellar Collapse

    E-Print Network [OSTI]

    P. D. Morley; Ivan Schmidt

    2002-01-30T23:59:59.000Z

    We employ an effective gravitational stellar final collapse model which contains the relevant physics involved in this complex phenomena: spherical radical infall in the Schwarzschild metric of the homogeneous core of an advanced star, giant magnetic dipole moment, magnetohydrodynamic material response and realistic equations of state (EOS). The electromagnetic pulse is computed both for medium size cores undergoing hydrodynamic bounce and large size cores undergoing black hole formation. We clearly show that there must exist two classes of neutron stars, separated by maximum allowable masses: those that collapsed as solitary stars (dynamical mass limit) and those that collapsed in binary systems allowing mass accretion (static neutron star mass). Our results show that the electromagnetic pulse spectrum associated with black hole formation is a universal signature, independent of the nuclear EOS. Our results also predict that there must exist black holes whose masses are less than the static neutron star stability limit.

  14. Electromagnetic radiation from relativistic nuclear collisions

    E-Print Network [OSTI]

    Charles Gale; Kevin L. Haglin

    2003-06-16T23:59:59.000Z

    We review some of the results obtained in the study of the production of electromagnetic radiation in relativistic nuclear collisions. We concentrate on the emission of real photons and dileptons from the hot and dense strongly interacting phases of the reaction. We examine the contributions from the partonic sector, as well as those from the nonperturbative hadronic sector. We examine the current data, some of the predictions for future measurements, and comment on what has been learnt so far.

  15. Velocity damper for electromagnetically levitated materials

    DOE Patents [OSTI]

    Fox, Richard J. (Oak Ridge, TN)

    1994-01-01T23:59:59.000Z

    A system for damping oscillatory and spinning motions induced in an electromagnetically levitated material. Two opposed field magnets are located orthogonally to the existing levitation coils for providing a DC quadrupole field (cusp field) around the material. The material used for generating the DC quadrupole field must be nonconducting to avoid eddy-current heating and of low magnetic permeability to avoid distorting the induction fields providing the levitation.

  16. Electromagnetic or other directed energy pulse launcher

    DOE Patents [OSTI]

    Ziolkowski, Richard W. (Livermore, CA)

    1990-01-01T23:59:59.000Z

    The physical realization of new solutions of wave propagation equations, such as Maxwell's equations and the scaler wave equation, produces localized pulses of wave energy such as electromagnetic or acoustic energy which propagate over long distances without divergence. The pulses are produced by driving each element of an array of radiating sources with a particular drive function so that the resultant localized packet of energy closely approximates the exact solutions and behaves the same.

  17. Velocity damper for electromagnetically levitated materials

    DOE Patents [OSTI]

    Fox, R.J.

    1994-06-07T23:59:59.000Z

    A system for damping oscillatory and spinning motions induced in an electromagnetically levitated material is disclosed. Two opposed field magnets are located orthogonally to the existing levitation coils for providing a DC quadrupole field (cusp field) around the material. The material used for generating the DC quadrupole field must be nonconducting to avoid eddy-current heating and of low magnetic permeability to avoid distorting the induction fields providing the levitation. 1 fig.

  18. Electromagnetic Dark Energy and Gravitoelectrodynamics of Superconductors

    E-Print Network [OSTI]

    Clovis Jacinto de Matos

    2007-10-29T23:59:59.000Z

    It is shown that Beck and Mackey electromagnetic model of dark energy in superconductors can account for the non-classical inertial properties of superconductors, which have been conjectured by the author to explain the Cooper pair's mass excess reported by Cabrera and Tate. A new Einstein-Planck regime for gravitation in condensed matter is proposed as a natural scale to host the gravitoelectrodynamic properties of superconductors.

  19. DEF: The Physical Basis of Electromagnetic Propulsion

    E-Print Network [OSTI]

    Pinheiro, Mario J

    2015-01-01T23:59:59.000Z

    The very existence of the physical vacuum provides a framework to propose a general mechanism for propelling bodies through an agency of electromagnetic fields, that seat in that medium. When two sub-systems of a general closed device interact via nonlocal and retarded electromagnetic pulses, it is easily shown that they give a nonzero force, and that only tend to comply with the action-to-reaction force in the limit of instantaneous interactions. The arrangement of sub-systems provide a handy way to optimize the unbalanced EM force with the concept of impedance matching. The general properties of the differential electromagnetic force (DEF) are the following: i) it is proportional to the square of the intensity and to the angular wave frequency $\\omega$; ii) to the space between the sub-systems (although in a non-linear manner); iii) it is inversely proportional to the speed of interaction; iv) when the two sub-systems are out-of-phase, DEF is null. The approach is of interest to practical engineering princi...

  20. Electromagnetic Compatibility in Nuclear Power Plants

    SciTech Connect (OSTI)

    Ewing, P.D.; Kercel, S.W.; Korsah, K.; Wood, R.T.

    1999-08-29T23:59:59.000Z

    Electromagnetic compatibility (EMC) has long been a key element of qualification for mission critical instrumentation and control (I&C) systems used by the U.S. military. The potential for disruption of safety-related I&C systems by electromagnetic interference (EMI), radio-frequency interference (RFI), or power surges is also an issue of concern for the nuclear industry. Experimental investigations of the potential vulnerability of advanced safety systems to EMI/RFI, coupled with studies of reported events at nuclear power plants (NPPs) that are attributed to EMI/RFI, confirm the safety significance of EMC for both analog and digital technology. As a result, Oak Ridge National Laboratory has been engaged in the development of the technical basis for guidance that addresses EMC for safety-related I&C systems in NPPs. This research has involved the identification of engineering practices to minimize the potential impact of EMI/RFI and power surges and an evaluation of the ambient electromagnetic environment at NPPs to tailor those practices for use by the nuclear industry. Recommendations for EMC guidance have been derived from these research findings and are summarized in this paper.

  1. Environmental Survey preliminary report

    SciTech Connect (OSTI)

    Not Available

    1988-04-01T23:59:59.000Z

    This report presents the preliminary findings from the first phase of the Environmental Survey of the United States Department of Energy (DOE) Sandia National Laboratories conducted August 17 through September 4, 1987. The objective of the Survey is to identify environmental problems and areas of environmental risk associated with Sandia National Laboratories-Albuquerque (SNLA). The Survey covers all environmental media and all areas of environmental regulation. It is being performed in accordance with the DOE Environmental Survey Manual. This phase of the Survey involves the review of existing site environmental data, observations of the operations carried on at SNLA, and interviews with site personnel. 85 refs., 49 figs., 48 tabs.

  2. Division of the momentum of electromagnetic waves in linear media into electromagnetic and material parts

    E-Print Network [OSTI]

    Pablo L. Saldanha

    2010-02-04T23:59:59.000Z

    It is proposed a natural and consistent division of the momentum of electromagnetic waves in linear, non-dispersive and non-absorptive dielectric and magnetic media into material and electromagnetic parts. The material part is calculated using directly the Lorentz force law and the electromagnetic momentum density has the same form than in vacuum, without an explicit dependence on the properties of the media. The consistency of the treatment is verified through the obtention of a correct momentum balance equation in many examples and showing the compatibility of the division with the Einstein's theory of relativity by the use of a gedanken experiment. An experimental prediction for the radiation pressure on mirrors immersed in linear dielectric and magnetic media is also made.

  3. Division of the momentum of electromagnetic waves in linear media into electromagnetic and material parts

    E-Print Network [OSTI]

    Saldanha, Pablo L

    2009-01-01T23:59:59.000Z

    It is proposed a natural and consistent division of the momentum of electromagnetic waves in linear, non-dispersive and non-absorptive dielectric and magnetic media into material and electromagnetic parts. The material part is calculated using directly the Lorentz force law and the electromagnetic momentum density has the same form than in vacuum, without an explicit dependence on the properties of the media. The consistency of the treatment is verified through the obtention of a correct momentum balance equation in many examples and showing the compatibility of the division with the Einstein's theory of relativity by the use of a gedanken experiment. An experimental prediction for the radiation pressure on mirrors immersed in linear dielectric and magnetic media is also made.

  4. 2009 Operations Employee Climate Survey

    E-Print Network [OSTI]

    2009 Operations Employee Climate Survey March 2009 #12;Acknowledgements TheBerkeleyLab Survey Team Associates has conducted a number of large-scale surveys for organizations in higher education, including MIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Survey

  5. Infrared Surveys for AGN

    E-Print Network [OSTI]

    Harding E. Smith

    2002-03-06T23:59:59.000Z

    From the earliest extragalactic infrared studies AGN have shown themselves to be strong infrared sources and IR surveys have revealed new populations of AGN. I briefly review current motivations for AGN surveys in the infrared and results from previous IR surveys. The Luminous Infrared Galaxies, which in some cases house dust-enshrouded AGN, submillimeter surveys, and recent studies of the cosmic x-ray and infrared backgrounds suggest that there is a population of highly-obscured AGN at high redshift. ISO Surveys have begun to resolve the infrared background and may have detected this obscured AGN population. New infrared surveys, particularly the SIRTF Wide-area Infrared Extragalactic Legacy Survey (SWIRE), will detect this population and provide a platform for understanding the evolution of AGN, Starbursts and passively evolving galaxies in the context of large-scale structure and environment.

  6. Savannah River Site Ingestion Pathway Methodology Manual for Airborne Radioactive Releases

    SciTech Connect (OSTI)

    Vincent, A.W. III

    2001-01-03T23:59:59.000Z

    This manual documents a recommended methodology for determining the ingestion pathway consequences of hypothetical accidental airborne radiological releases from facilities at the Savannah River Site. Both particulate and tritiated radioactive contaminants are addressed. Other approaches should be applied for evaluation of routine releases.

  7. DETECTION OF IMPULSE-LIKE AIRBORNE SOUND FOR DAMAGE IDENTIFICATION IN ROTOR BLADES OF WIND TURBINES

    E-Print Network [OSTI]

    Boyer, Edmond

    DETECTION OF IMPULSE-LIKE AIRBORNE SOUND FOR DAMAGE IDENTIFICATION IN ROTOR BLADES OF WIND TURBINES burdens of wind turbines. To detect damage of rotor blades, several research projects focus on an acoustic, rotor blade, wind turbine INTRODUCTION There are several publications of non destructive damage

  8. Speciation of Sb in airborne particulate matter, vehicle brake linings, and brake pad wear residues

    E-Print Network [OSTI]

    Short, Daniel

    Speciation of Sb in airborne particulate matter, vehicle brake linings, and brake pad wear residues: XAS XANES EXAFS Antimony Particulate matter Brake linings a b s t r a c t Insights into the speciation of Sb in samples of brake linings, brake pad wear residues, road dust, and atmospheric particulate

  9. LAAS Ionosphere Spatial Gradient Threat Model and Impact of LGF and Airborne Monitoring

    E-Print Network [OSTI]

    Stanford University

    LAAS Ionosphere Spatial Gradient Threat Model and Impact of LGF and Airborne Monitoring Ming Luo of users for the current Category I LAAS architecture. In the ionosphere threat model used by previous-case ionosphere conditions. In this paper, the ionosphere threat model is reexamined based on WAAS and IGS data

  10. 3-D airborne ultrasound synthetic aperture imaging based on capacitive micromachined ultrasonic transducers

    E-Print Network [OSTI]

    Khuri-Yakub, Butrus T. "Pierre"

    3-D airborne ultrasound synthetic aperture imaging based on capacitive micromachined ultrasonic was implemented by mechanical scanning a co-located transmitter and receiver using the classic synthetic aperture, silicone rubber, and foam plastics, in an attempt to overcome bad mechanical impedance matching between

  11. Effect of sampling height on the concentration of airborne fungal spores

    E-Print Network [OSTI]

    Levetin, Estelle

    and possible sources of air pollution.8 In addition, it is high enough to avoid vandalism and bothering aeroallergens. Airborne fungal spores are commonly collected from the outdoor air at the rooftop level of high respiration level (1.5 m above the ground) and at roof level (12 m height). Methods: Air samples were

  12. airborne gamma-ray spectrometer: Topics by E-print Network

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

    gamma-ray spectrometer First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Digital Logarithmic Airborne...

  13. airborne gamma-ray measurements: Topics by E-print Network

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

    airborne gamma-ray measurements First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Digital Logarithmic...

  14. Elemental composition of airborne particulates in uranium mining and milling operations

    SciTech Connect (OSTI)

    Paschoa, A.S.; Wrenn, M.E.; Jones, K.W.; Cholewa, M.; Carvalho, S.M.

    1984-01-01T23:59:59.000Z

    Airborne particulates were collected through filters in occupational areas of the uranium mining and milling complex located in Pocos de Caldas, Brazil. The filters were analyzed by microPIXE (particle induced x-ray emission) combined with Rutherford Backscattering (RBS) of the incident protons. The results are discussed in the paper. 4 references, 6 figures, 1 table.

  15. Light transmittance in forest canopies determined using airborne laser altimetry and in-canopy quantum measurements

    E-Print Network [OSTI]

    Lefsky, Michael

    Light transmittance in forest canopies determined using airborne laser altimetry and in Abstract The vertical distribution of light transmittance was derived from field and laser altimeter-directed laser light than of direct solar radiation from typical elevation angles. Transects of light

  16. Measurement of airborne radioactivity from the Fukushima reactor accident in Tokushima, Japan

    E-Print Network [OSTI]

    Fushimi, K; Sakama, M; Sakaguchi, Y

    2011-01-01T23:59:59.000Z

    The airborne radioactive isotopes from the Fukushima Daiichi nuclear plant was measured in Tokushima, western Japan. The continuous monitoring has been carried out in Tokushima. From March 23, 2011 the fission product $^{131}$I was observed. The radioisotopes $^{134}$Cs and $^{137}$Cs were also observed in the beginning of April. However the densities were extremely smaller than the Japanese regulation of radioisotopes.

  17. Statistical Issues in the Study of Air Pollution Involving Airborne Particulate Matter

    E-Print Network [OSTI]

    Washington at Seattle, University of

    of the Workshop was to initiate a statistical research program relevant to setting air quality standardsStatistical Issues in the Study of Air Pollution Involving Airborne Particulate Matter Lawrence H. Cox NRCSET e c h n i c a l R e p o r t S e r i e s NRCSE-TRS No. 041 January 10, 2000 The NRCSEwas

  18. LONG-TERM DETERMINATION OF AIRBORNE RADON PROGENY CONCENTRATIONS USING LR 115 DETECTORS

    E-Print Network [OSTI]

    Yu, K.N.

    LONG-TERM DETERMINATION OF AIRBORNE RADON PROGENY CONCENTRATIONS USING LR 115 DETECTORS dose in the lung is mainly due to short-lived radon progeny, i.e. 218 Po, 214 Pb, 214 Bi and 214 Po, but not the radon (222 Rn) gas itself. Accordingly, long-term measure- ments of the concentrations of radon progeny

  19. Measurement of airborne radioactivity from the Fukushima reactor accident in Tokushima, Japan

    E-Print Network [OSTI]

    K. Fushimi; S. Nakayama; M. Sakama; Y. Sakaguchi

    2012-10-19T23:59:59.000Z

    The airborne radioactive isotopes from the Fukushima Daiichi nuclear plan t was measured in Tokushima, western Japan. The continuous monitoring has been carried out in Tokushima. From March 23, 2011 the fission product $^{131}$I was observed. The radioisotopes $^{134}$Cs and $^{137}$Cs were also observed in the beginning of April. However the densities were extremely smaller than the Japanese regulation of radioisotopes.

  20. Airborne lead and other elements derived from local fires in the Himalayas

    SciTech Connect (OSTI)

    Davidson, C.I.; Grimm, T.C.; Nasta, M.A.

    1981-12-18T23:59:59.000Z

    The combustion of wood and yak dung for heating and cooking in a populated Nepal Himalayan valley contributes significantly to the ambient airborne concentrations of lead, copper, aluminum, magnesium, and elemental and organic carbon. A comparison of the concentrations of these elements in fresh snow with corresponding values in air suggests that the pollution aerosol is confined to the valley, with pristine air aloft.

  1. Electromagnetically-Induced Frame-Dragging around Astrophysical Objects

    E-Print Network [OSTI]

    Ruiz, Andrés F Gutiérrez

    2015-01-01T23:59:59.000Z

    Frame dragging (Lense-Thirring effect) is generally associated with rotating astrophysical objects. However, it can also be generated by electromagnetic fields if electric and magnetic fields are simultaneously present. In most models of astrophysical objects, macroscopic charge neutrality is assumed and the entire electromagnetic field is characterized in terms of a magnetic dipole component. Hence, the purely electromagnetic contribution to the frame dragging vanishes. However, strange stars may posses independent electric dipole and neutron stars independent electric quadrupole moments that may lead to the presence of purely electromagnetic contributions to the frame dragging. Moreover, recent observations have shown that in stars with strong electromagnetic fields, the magnetic quadrupole may have a significant contribution to the dynamics of stellar processes. As an attempt to characterized and quantify the effect of electromagnetic frame-dragging in this kind of astrophysical objects, an analytic soluti...

  2. Helicopter Surveys for Locating Wells and Leaking Oilfield Infrastructure

    SciTech Connect (OSTI)

    Hammack, R.W.; Veloski, G.A.; Hodges, G. (Fugro Airborne Surveys)

    2006-10-01T23:59:59.000Z

    Prior to the injection of CO2 into geological formations, either for enhanced oil recovery or for CO2 sequestration, it is necessary to locate wells that perforate the target formation and are within the radius of influence for planned injection wells. Locating and plugging wells is necessary because improperly plugged well bores provide the most rapid route for CO2 escape to the surface. This paper describes the implementation and evaluation of helicopter and ground-based well detection strategies at a 100+ year old oilfield in Wyoming where a CO2 flood is planned. This project was jointly funded by the U.S. Department of Energy’s National Energy Technology Laboratory and Fugro Airborne Surveys

  3. Airborne laser induced fluorescence imaging. Innovative technology summary report

    SciTech Connect (OSTI)

    NONE

    1999-06-01T23:59:59.000Z

    Laser-Induced Fluorescence (LIF) was demonstration as part of the Fernald Environmental Management Project (FEMP) Plant 1 Large Scale Demonstration and Deployment Project (LSDDP) sponsored by the US Department of Energy (DOE) Office of Science and Technology, Deactivation and Decommissioning Focus Area located at the Federal Energy Technology Center (FETC) in Morgantown, West Virginia. The demonstration took place on November 19, 1996. In order to allow the contaminated buildings undergoing deactivation and decommissioning (D and D) to be opened to the atmosphere, radiological surveys of floors, walls and ceilings must take place. After successful completion of the radiological clearance survey, demolition of the building can continue. Currently, this process is performed by collecting and analyzing swipe samples for radiological analysis. Two methods are used to analyze the swipe samples: hand-held frisker and laboratory analysis. For the purpose of this demonstration, the least expensive method, swipe samples analyzed by hand-held frisker, is the baseline technology. The objective of the technology demonstration was to determine if the baseline technology could be replaced using LIF.

  4. A multispectral scanner survey of the Salmon Site and surrounding area, Lamar County, Mississippi

    SciTech Connect (OSTI)

    Blohm, J.D.; Brewster, S.B. Jr.; Shines, J.E.

    1994-06-01T23:59:59.000Z

    An airborne multispectral scanner survey was conducted over the Salmon Site and the surrounding area in Lamar County, Mississippi, on May 8, 1992. Twelve-channel daytime multispectral data were collected from altitudes of 2,000 feet, 4,000 feet, and 6,000 feet above ground level. Large-scale color photography was acquired simultaneously with the scanner data. Three different composite images have been prepared to demonstrate the digital image enhancement techniques that can be applied to the data. The data that were acquired offer opportunity for further standard and customized analysis based on any specific environmental characterization issues associated with this site.

  5. Time-Domain Electromagnetics At Glass Mountain Area (Cumming...

    Open Energy Info (EERE)

    GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Time-Domain Electromagnetics At Glass Mountain Area (Cumming And Mackie, 2007) Exploration Activity Details Location Glass...

  6. Electromagnetic Soundings At Dixie Valley Geothermal Area (Mallan...

    Open Energy Info (EERE)

    Mallan, Et Al., 2001) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Electromagnetic Soundings At Dixie Valley Geothermal Area (Mallan, Et Al.,...

  7. MA598: Modeling and Computation in Optics and Electromagnetics

    E-Print Network [OSTI]

    2010-08-24T23:59:59.000Z

    MA598: Modeling and Computation in Optics and Electromagnetics. Instructor: Peijun Li, office: Math 440, phone: 49-40846, e-mail: lipeijun@math.purdue.edu.

  8. Time-Domain Electromagnetics At Neal Hot Springs Geothermal Area...

    Open Energy Info (EERE)

    Activity: Time-Domain Electromagnetics At Neal Hot Springs Geothermal Area (Colorado School of Mines and Imperial College London, 2011) Exploration Activity Details Location Neal...

  9. MA692: Modeling and Computation in Optics and Electromagnetics

    E-Print Network [OSTI]

    2012-08-14T23:59:59.000Z

    MA692: Modeling and Computation in Optics and Electromagnetics. Instructor: Peijun Li, office: Math 440, phone: 49-40846, e-mail: lipeijun@math.purdue.edu.

  10. Electromagnetic Soundings At Kilauea East Rift Geothermal Area...

    Open Energy Info (EERE)

    of this study was to obtain a more complete model of the geologic structure and hydrology of Kilauea's east rift zone Notes Electromagnetic transient soundings were conducted...

  11. 6.013 Electromagnetics and Applications, Fall 2002

    E-Print Network [OSTI]

    Staelin, David H.

    Electromagnetic phenomena are explored in modern applications including wireless communications, circuits, computer interconnects and peripherals, optical fiber links and components, microwave communications and radar, ...

  12. Analysis Of Factors Affecting Natural Source Slf Electromagnetic...

    Open Energy Info (EERE)

    At Geothermal Wells Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Analysis Of Factors Affecting Natural Source Slf Electromagnetic...

  13. Electromagnetic scattering and induction models for spheroidal geometries

    E-Print Network [OSTI]

    Barrowes, Benjamin E., 1973-

    2004-01-01T23:59:59.000Z

    Electromagnetic scattering from a medium containing randomly distributed discrete dielectric spheroidal inclusions is studied. Also, the broadband magnetoquasistatic solution for the induced magnetic field from a conducting ...

  14. 6.641 Electromagnetic Fields, Forces, and Motion, Spring 2003

    E-Print Network [OSTI]

    Zahn, Markus, 1946-

    Electric and magnetic quasistatic forms of Maxwell's equations applied to dielectric, conduction, and magnetization boundary value problems. Electromagnetic forces, force densities, and stress tensors, including magnetization ...

  15. Time-Domain Electromagnetics At Kilauea Southwest Rift And South...

    Open Energy Info (EERE)

    Southwest Rift And South Flank Area (Thomas, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Time-Domain Electromagnetics At Kilauea...

  16. Novel resonance-assisted electromagnetic-transport phenomena

    E-Print Network [OSTI]

    Kurs, André B

    2011-01-01T23:59:59.000Z

    We first demonstrate theoretically and experimentally that electromagnetic resonators with high quality factors (Q) can be used to transfer power efficiently over distances substantially larger than the characteristic ...

  17. Electromagnetic Evidence For An Ancient Avalanche Caldera Rim...

    Open Energy Info (EERE)

    Merapi, Indonesia Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Electromagnetic Evidence For An Ancient Avalanche Caldera Rim On The South...

  18. Vlf Electromagnetic Investigations Of The Crater And Central...

    Open Energy Info (EERE)

    Helens, Washington Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Vlf Electromagnetic Investigations Of The Crater And Central Dome Of Mount...

  19. Computer-based synthetic data to assess the tree delineation algorithm from airborne LiDAR survey

    E-Print Network [OSTI]

    Xi, Weimin

    is driven by the efficient use of forest resources, which in turn requires detailed understanding of forest 2011 Accepted: 2 November 2011 /Published online: 29 November 2011 # Springer Science+Business Media useful forestry relevant information, this data must be interpreted using mathematical models

  20. Computer-based synthetic data to assess the tree delineation algorithm from airborne LiDAR survey

    E-Print Network [OSTI]

    is driven by the efficient use of forest resources, which in turn requires detailed understanding of forest 2011 Accepted: 2 November 2011 # Springer Science+Business Media, LLC 2011 Abstract Small Footprint Li be interpreted using mathematical models and computer algorithms that infer or estimate specific forest metrics

  1. General Polarization Matrix of Electromagnetic Radiation

    E-Print Network [OSTI]

    Muhammet Ali Can; Alexander S. Shumovsky

    2001-05-15T23:59:59.000Z

    A general form of the polarization matrix valid for any type of electromagnetic radiation (plane waves, multipole radiation etc.) is defined in terms of a certain bilinear form in the field-strength tensor. The quantum counterpart is determined as an operator matrix with normal-ordered elements with respect to the creation and annihilation operators. The zero-point oscillations (ZPO) of polarization are defined via difference between the anti-normal and normal ordered operator polarization matrices. It is shown that ZPO of the multipole field are stronger than those described by the model of plane waves and are concentrated in a certain neighborhood of a local source.

  2. Electromagnetic Radiation Hardness of Diamond Detectors

    E-Print Network [OSTI]

    T. Behnke; M. Doucet; N. Ghodbane; A. Imhof; C. Martinez; W. Zeuner

    2001-08-22T23:59:59.000Z

    The behavior of artificially grown CVD diamond films under intense electromagnetic radiation has been studied. The properties of irradiated diamond samples have been investigated using the method of thermally stimulated current and by studying their charge collection properties. Diamonds have been found to remain unaffected after doses of 6.8 MGy of 10 keV photons and 10 MGy of MeV-range photons. This observation makes diamond an attractive detector material for a calorimeter in the very forward region of the proposed TESLA detector.

  3. Artificial Retina Project: Electromagnetic and Thermal Effects

    SciTech Connect (OSTI)

    Lazzi, Gianluca

    2014-08-29T23:59:59.000Z

    This award supported the investigation on electromagnetic and thermal effects associated with the artificial retina, designed in collaboration with national laboratories, universities, and private companies. Our work over the two years of support under this award has focused mainly on 1) Design of new telemetry coils for optimal power and data transfer between the implant and the external device while achieving a significant size reduction with respect to currently used coils; 2) feasibility study of the virtual electrode configuration 3) study the effect of pulse shape and duration on the stimulation efficacy.

  4. Electromagnetic Profiling Techniques | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489 No revision| OpenElectromagnetic Profiling Techniques Jump to:

  5. Electromagnetic Sounding Techniques | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489 No revision| OpenElectromagnetic Profiling Techniques Jump

  6. ORISE: Characterization surveys

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

    extent of radiological contamination at sites scheduled for decontamination and decommissioning (D&D). A fundamental aspect of all D&D projects, characterization surveys provide...

  7. User Survey Results | EMSL

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

    have accessed computing resources during the prior year. The results of the most recent survey are posted here with management responses to concerns or issues identified by our...

  8. Aerial radiometric and magnetic survey; Brushy Basin detail survey: Price/Salina national topographic map sheets, Utah. Volume I. General narrative report. Final report

    SciTech Connect (OSTI)

    Not Available

    1981-01-01T23:59:59.000Z

    The results of the analyses of a systematic airborne gamma radiation and total magnetic survey for the area identified as Brushy Basin, located in central Utah, are presented in Volumes I-IV of this report. The airborne data gathered is reduced by ground computer facilities to yield profile plots of the equivalent uranium, thorium and potassium gamma radiation intensities, the ratios of these intensities, the total gamma radiation counting rate and the earth's residual magnetic field intensity. Profile plots of the aircraft's altitude above the earth's surface, the ambient temperature and pressure, and the magnetic field data measured by a base station magnetometer are presented also. An evaluation of the distribution of the radiometric data in terms of surface geology and its established geochemical units, which were derived via geochemical analysis methods, for the entire survey area has been prepared and is included. The determination of the geochemical units presented has been established principally from the analysis of the radiometric and magnetic contour maps and, more importantly, the multi-variate analysis map. A general description of the area, including descriptions of the various geologic and geochemical units, is inluded within the text.

  9. Electromagnetic fields: Biological and clinical aspects

    SciTech Connect (OSTI)

    Tabrah, F.L.; Batkin, S. (Department of Physiology, University of Hawaii School of Medicine, Honolulu (USA))

    1991-03-01T23:59:59.000Z

    Our entire biosphere is immersed in a sea of man-made electromagnetic fields (EMF). Occupational and public health data suggest that these fields may be a health hazard, possibly involving cancer and fetal loss. This paper reviews the history and pertinent physics of electromagnetic fields and presents evidence from the authors' work, and that of others, of biological interaction with living systems. Epidemiological data suggesting EMF hazards are reviewed including a discussion of possible risks associated with Hawaii's Lualualei transmitter site, TV and FM antennas in high-density population areas, fields surrounding electric power transmission and computer terminals, and the plan to route a major highway through the near-field of an operating Omega signal-source. In the face of current public fear and controversial research reports about long-term EMF exposure, suggestions are presented for public policy about these local sources of concern, as well as for the EMF risks common to any similarly developed areas. 30 refs.

  10. Fuzzy logic approach to supervised segmentation of forest regions infested by Southern Pine Beetle using color airborne images

    E-Print Network [OSTI]

    Ng, Kit-Tong

    1994-01-01T23:59:59.000Z

    Digital image processing technique and fuzzy logic approach are used to identify forest areas infested with Southern Pine Beetle, SPB, using normal color airborne imageries in this research. This research will be used as a front end of a larger...

  11. A fast-time study on increasing the capacity of continuous descent approaches through airborne precision spacing

    E-Print Network [OSTI]

    Weitz, Lesley Anne

    2005-11-01T23:59:59.000Z

    Research Center (LaRC) in Hampton, Virginia, two parallel research efforts have focusedon terminal area research: one is Airborne Precision Spacing (APS), and the other is the Quiet Aircraft Technologies (QAT) project. The APS objective is to increase...

  12. Method for the assessment of airborne off-target pesticide spray concentrations due to aircraft wing-tip vortex

    E-Print Network [OSTI]

    Oliva, Sergio Eduardo

    2003-01-01T23:59:59.000Z

    The purpose of this thesis is to develop a method for assessing airborne concentrations caused by off-target pesticide drift. Concentrations are bounded by the worst credible circumstances within a normal aircraft pesticide spraying. It is assumed...

  13. Airborne and ground based measurements of volatile organic compounds using proton transfer reaction mass spectrometry in Texas and Mexico City

    E-Print Network [OSTI]

    Fortner, Edward Charles

    2009-05-15T23:59:59.000Z

    Measurements of ambient volatile organic compounds (VOCs) by proton transfer reaction mass spectrometry (PTR-MS) are reported from recent airborne and surface based field campaigns. The Southeast Texas Tetroon Study (SETTS) was a project within...

  14. Progress In Electromagnetics Research B, Vol. 37, 205235, 2012 DERIVATION OF HOMOGENEOUS PERMITTIVITY OF

    E-Print Network [OSTI]

    Koledintseva, Marina Y.

    for engineering electromagnetic absorbing composite materials, for example, containing carbon fibers. The causal PERMITTIVITY OF COMPOSITE MATERIALS WITH ALIGNED CYLINDRI- CAL INCLUSIONS FOR CAUSAL ELECTROMAGNETIC Debye representation is important for incorporation of a composite material in numerical electromagnetic

  15. Guiding of an electromagnetic pulse in a plasma immersed in combined wiggler and axial magnetic fields

    E-Print Network [OSTI]

    Hur, Min Sup

    2009-01-01T23:59:59.000Z

    813 Guiding of an electromagnetic pulse in a plasma immersedGuiding of an electromagnetic pulse in a plasma immersed inof guiding an electromagnetic pulse. The scheme consists of

  16. Experimental use of airborne sensors in the measurement of Mississippi River outflow into the Gulf of Mexico

    E-Print Network [OSTI]

    Walsh, Don

    1967-01-01T23:59:59.000Z

    ~ZNENTAL USE OP AIRBORNE SENSORS IN THE MEASUREMBNZ OP MISSISSIPPI RIVER OUTPLO? INTO THE GULP OP I'IEXICO DON 'WAKEN Lieutenant Commander U ~ ST Navy Submitted to the Graduate College of the Texas ASM University in partial fulfillment... . . . . , . , 39 2 Freight-data--handling - -o- ~ . . ----. ------58 Vo. -ARQZSXS OP. RBSULTS o -~ ~ ~ o ~ o '~ o=. oo ~ ? o =-'- 63 Airborne Sensor Evaluation , . . . . . . 63 l. Xnfrared Xmagery o . . . . '. . ~ , 63 Ultraviolet Imagery ~ ~ . o ' 65 3. Aerial...

  17. An investigation of sea surface temperature patterns in the Gulf of Mexico as determined by an airborne infrared sensor

    E-Print Network [OSTI]

    Drennan, Kirby Lee

    1967-01-01T23:59:59.000Z

    AN INVESTIGATION OF SEA SURFACE TF"PERATURE PATTERNS IN THE GULF OF IKXICO AS DETERMINED BY AN AIRBORNE INFRARED SENSOR A Thesis by KIRBY IEE DRENNAN Submitted to the Graduate College of the Texas API University in partial tulfillment... of the requirements for the degree of 14IASTER OF SCIENCE August 1967 Physical Oceanography AN INVESTIGATION OF SEA SURFACE TEMPERATURE PATIERNS IN THE GULF OF MEXICO AS DETERMINED BY AN AIRBORNE INFRARED SENSOR A Thesis by KIRBY LEE DRENNAN Approved...

  18. XSEDE Cloud Survey Report

    E-Print Network [OSTI]

    Walter, M.Todd

    XSEDE Cloud Survey Report David Lifka, Cornell Center for Advanced Computing Ian Foster, ANL, ANL and The University of Chicago A National Science Foundation-sponsored cloud user survey was conducted from September 2012 to April 2013 by the XSEDE Cloud Integration Investigation Team to better

  19. Electromagnetic space-time crystals. II. Fractal computational approach

    E-Print Network [OSTI]

    G. N. Borzdov

    2014-10-20T23:59:59.000Z

    A fractal approach to numerical analysis of electromagnetic space-time crystals, created by three standing plane harmonic waves with mutually orthogonal phase planes and the same frequency, is presented. Finite models of electromagnetic crystals are introduced, which make possible to obtain various approximate solutions of the Dirac equation. A criterion for evaluating accuracy of these approximate solutions is suggested.

  20. Electromagnetic Wellbore Heating C. Sean Bohun, The Pennsylvania State University,

    E-Print Network [OSTI]

    Bohun, C. Sean

    Electromagnetic Wellbore Heating C. Sean Bohun, The Pennsylvania State University, Bruce McGee, Mc Workshop, June 2000. 1 Introduction In this paper we derive a simple model that describes the recovery of petroleum fluids from an oil reservoir by the method of electromagnetic heating. By its very nature

  1. Electromagnetic actuator to reduce vibration sources Thibaut Chailloux*

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    in an FE- Tuned Magnetic Equivalent Circuit of an Electromagnetic Relay, Sixdenier F., Raulet M.-A., MarionElectromagnetic actuator to reduce vibration sources Thibaut Chailloux* , L. Morel* , F. Sixdenier In order to improve passenger comfort, a reduction of vibration sources in vehicles is being considered

  2. Particle Acceleration by a Short-Intense Elliptically Polarized Electromagnetic

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Particle Acceleration by a Short-Intense Elliptically Polarized Electromagnetic Pulse Propagating to plasma physics and particle accelerators. The interaction physics of fields with particles has also been, Colchester CO4 3SQ, U.K. Abstract. The motion of a charged particle driven by an electromagnetic pulse

  3. Time-spatial drift of decelerating electromagnetic pulses

    E-Print Network [OSTI]

    Nerukh, Dmitry

    Time-spatial drift of decelerating electromagnetic pulses Alexander G. Nerukh1* and Dmitry A dependent electromagnetic pulse generated by a current running laterally to the direction of the pulse propagation is considered in paraxial approximation. It is shown that the pulse envelope moves in the time

  4. Building Technologies Residential Survey

    SciTech Connect (OSTI)

    Secrest, Thomas J.

    2005-11-07T23:59:59.000Z

    Introduction A telephone survey of 1,025 residential occupants was administered in late October for the Building Technologies Program (BT) to gather information on residential occupant attitudes, behaviors, knowledge, and perceptions. The next section, Survey Results, provides an overview of the responses, with major implications and caveats. Additional information is provided in three appendices as follows: - Appendix A -- Summary Response: Provides summary tabular data for the 13 questions that, with subparts, comprise a total of 25 questions. - Appendix B -- Benchmark Data: Provides a benchmark by six categories to the 2001 Residential Energy Consumption Survey administered by EIA. These were ownership, heating fuel, geographic location, race, household size and income. - Appendix C -- Background on Survey Method: Provides the reader with an understanding of the survey process and interpretation of the results.

  5. Apparatus for real-time airborne particulate radionuclide collection and analysis

    DOE Patents [OSTI]

    Smart, John E. (West Richland, WA); Perkins, Richard W. (Richland, WA)

    2001-01-01T23:59:59.000Z

    An improved apparatus for collecting and analyzing an airborne particulate radionuclide having a filter mounted in a housing, the housing having an air inlet upstream of the filter and an air outlet downstream of the filter, wherein an air stream flows therethrough. The air inlet receives the air stream, the filter collects the airborne particulate radionuclide and permits a filtered air stream to pass through the air outlet. The improvement which permits real time counting is a gamma detecting germanium diode mounted downstream of the filter in the filtered air stream. The gamma detecting germanium diode is spaced apart from a downstream side of the filter a minimum distance for a substantially maximum counting detection while permitting substantially free air flow through the filter and uniform particulate radionuclide deposition on the filter.

  6. A model for forming airborne synthetic aperture radar images of underground targets

    SciTech Connect (OSTI)

    Doerry, A.W.

    1994-01-01T23:59:59.000Z

    Synthetic Aperture Radar (SAR) from an airborne platform has been proposed for imaging targets beneath the earth`s surface. The propagation of the radar`s energy within the ground, however, is much different than in the earth`s atmosphere. The result is signal refraction, echo delay, propagation losses, dispersion, and volumetric scattering. These all combine to make SAR image formation from an airborne platform much more challenging than a surface imaging counterpart. This report treats the ground as a lossy dispersive half-space, and presents a model for the radar echo based on measurable parameters. The model is then used to explore various imaging schemes, and image properties. Dynamic range is discussed, as is the impact of loss on dynamic range. Modified window functions are proposed to mitigate effects of sidelobes of shallow targets overwhelming deeper targets.

  7. Measurement of airborne fission products in Chapel Hill, NC, USA from the Fukushima I reactor accident

    E-Print Network [OSTI]

    MacMullin, S; Green, M P; Henning, R; Holmes, R; Vorren, K; Wilkerson, J F

    2011-01-01T23:59:59.000Z

    We present measurements of airborne fission products in Chapel Hill, NC, USA, from 62 days following the March 11, 2011, accident at the Fukushima I Nuclear Power Plant. Airborne particle samples were collected daily in air filters and radio-assayed with two high-purity germanium (HPGe) detectors. The fission products I-131 and Cs-137 were measured with maximum activities of 4.2 +/- 0.6 mBq/m^2 and 0.42 +/- 0.07 mBq/m^2 respectively. Additional activity from I-131, I-132, Cs-134, Cs-136, Cs-137 and Te-132 were measured in the same air filters using a low-background HPGe detector at the Kimballton Underground Research Facility (KURF).

  8. 2013 REPORT ILLINOIS NATURAL HISTORY SURVEY

    E-Print Network [OSTI]

    Bashir, Rashid

    2013 REPORT ILLINOIS NATURAL HISTORY SURVEY ILLINOIS STATE ARCHAEOLOGICAL SURVEY ILLINOIS STATE State Geological Survey Illinois State Water Survey Illinois Sustainable Technology Center Awards GEOLOGICAL SURVEY ILLINOIS STATE WATER SURVEY ILLINOIS SUSTAINABLE TECHNOLOGY CENTER #12;#12;PRAIRIE RESEARCH

  9. Reduced Order Computational Methods for Electromagnetic Material Interrogation Using Pulsed Signals and Conductive

    E-Print Network [OSTI]

    Kepler, Grace Martinelli

    Reduced Order Computational Methods for Electromagnetic Material Interrogation Using Pulsed Signals of a pulsed planar electromagnetic wave of a dielectric slab with a supraconductive backing. Previous work

  10. Device and method for accurately measuring concentrations of airborne transuranic isotopes

    DOE Patents [OSTI]

    McIsaac, C.V.; Killian, E.W.; Grafwallner, E.G.; Kynaston, R.L.; Johnson, L.O.; Randolph, P.D.

    1996-09-03T23:59:59.000Z

    An alpha continuous air monitor (CAM) with two silicon alpha detectors and three sample collection filters is described. This alpha CAM design provides continuous sampling and also measures the cumulative transuranic (TRU), i.e., plutonium and americium, activity on the filter, and thus provides a more accurate measurement of airborne TRU concentrations than can be accomplished using a single fixed sample collection filter and a single silicon alpha detector. 7 figs.

  11. Large Dynamic Range Electromagnetic FieldLarge Dynamic Range Electromagnetic Field Sensor based on Domain Inverted Electro-Optic

    E-Print Network [OSTI]

    Texas at Austin, University of

    Large Dynamic Range Electromagnetic FieldLarge Dynamic Range Electromagnetic Field Sensor based on Domain Inverted Electro-Optic Polymer Directional CouplerPolymer Directional Coupler Alan X. Wang Ray T. Chen Omega Optics Inc Austin TXOmega Optics Inc., Austin, TX -1- #12;Application of Electric Field

  12. A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea...

    Open Energy Info (EERE)

    Volcano, HawaiiThesisDissertation Author Catherine King Skokan Organization Colorado School of Mines Published Publisher Not Provided, 1974 DOI Not Provided Check for DOI...

  13. Signal extraction from 4D transient electromagnetic surveys using the equivalent source method

    E-Print Network [OSTI]

    monitoring of a heavy oil reservoir (Hu et al., 2008), track movement in an underground gas storage site (Ho of the relationship between the three components of the observed decaying magnetic field to improve data contaminated synthetic and field three-component TEM data are used to demonstrate the viability of the technique

  14. A survey of non-U.S. nuclear electromagnetic pulse (EMP) simulators

    SciTech Connect (OSTI)

    Giles, J.C.

    1997-12-01T23:59:59.000Z

    This paper, an update of papers presented in 1984 and 1995, describes the large number and diverse variety of EMP simulators that exist outside the US. The end of the Cold War has provided the opportunity to learn of new simulators and to compare their characteristics as well as the test methods employed in them. While similarities exist with EMP simulators developed in the US and other western countries, in some cases the simulators developed by researchers of the former Soviet Union and other Warsaw Pact nations provide some very interesting differences in approach. As is the case with US EMP simulators, no one perfect EMP simulator exists. Baum has classified non-source region EMP simulators in three categories: (1) guided wave, (2) dipole, and (3) hybrid. This paper describes several examples that fall into these three categories as well as a unique source region simulator in Russia that does not. All designs have inherent limitations; thus the large variety that exists. Some analysis and extrapolation of results must always be done. The ideal of a simple zap test to prove a system hard to EMP is just that--an unachievable ideal.

  15. A Fractal Interpretation of Controlled-Source Helicopter Electromagnetic Survey Data Seco Creek, Edwards Aquifer, TX 

    E-Print Network [OSTI]

    Decker, Kathryn T.

    2010-07-14T23:59:59.000Z

    The Edwards aquifer lies in the structurally complex Balcones fault zone and supplies water to the growing city of San Antonio. To ensure that future demands for water are met, the hydrological and geophysical properties of the aquifer must be well...

  16. A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano,

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlinPapersWindey Wind6:00-06:00 U.S. NationalMammalsSmithResponseHawaii |

  17. AIRBORNE, OPTICAL REMOTE SENSING OF METHANE AND ETHANE FOR NATURAL GAS PIPELINE LEAK DETECTION

    SciTech Connect (OSTI)

    Jerry Myers

    2003-11-12T23:59:59.000Z

    Ophir Corporation was awarded a contract by the U. S. Department of Energy, National Energy Technology Laboratory under the Project Title ''Airborne, Optical Remote Sensing of Methane and Ethane for Natural Gas Pipeline Leak Detection'' on October 14, 2002. This second six-month technical report summarizes the progress made towards defining, designing, and developing the hardware and software segments of the airborne, optical remote methane and ethane sensor. The most challenging task to date has been to identify a vendor capable of designing and developing a light source with the appropriate output wavelength and power. This report will document the work that has been done to identify design requirements, and potential vendors for the light source. Significant progress has also been made in characterizing the amount of light return available from a remote target at various distances from the light source. A great deal of time has been spent conducting laboratory and long-optical path target reflectance measurements. This is important since it helps to establish the overall optical output requirements for the sensor. It also reduces the relative uncertainty and risk associated with developing a custom light source. The data gathered from the optical path testing has been translated to the airborne transceiver design in such areas as: fiber coupling, optical detector selection, gas filters, and software analysis. Ophir will next, summarize the design progress of the transceiver hardware and software development. Finally, Ophir will discuss remaining project issues that may impact the success of the project.

  18. Gamma-analysis of airborne particulates sampled in Youzhno-Sakhalinsk town at March - April 2011

    E-Print Network [OSTI]

    E. G. Tertyshnik; V. P. Martynenko; F. A. Andreev; G. B. Artemyev

    2012-03-22T23:59:59.000Z

    The experience of discovery of the radioactive products which have released into atmosphere of Sakhalin region from Fukushima Daiichi accident is presented. Sampling of airborne particulates and atmosphere fallout was carried out by means of the air ventilation set and horizontal gauze planchs, respectively. The HPGe detector was used for gamma analyses of the airborne samples. Since 23 March we confidently measured 131I in the airborne samples, after 03.04.2011 we also registered a rise of activity 137Cs and 134Cs. 132Te and 132I were discovered in ashen sample of the planch, which had exposed in Youzhno-Kurilk from 14 to 17 March. The effect of the pairs production when in the samples 208Tl presence, which emits gamma-quanta of 2615 keV, causes a rise in apparatus spectra of the peak corresponding to energy 1593 keV, which could be in error ascribed to 140La. It had been experimentally shown that the systematic reduction of 134Cs content in measuring samples due to effect of gamma - gamma coincidence did not exceed 7 % (for the detector and geometry of the measurement used).

  19. AIRBORNE, OPTICAL REMOTE SENSING OF METHANE AND ETHANE FOR NATURAL GAS PIPLINE LEAK DETECTION

    SciTech Connect (OSTI)

    Jerry Myers

    2004-05-12T23:59:59.000Z

    Ophir Corporation was awarded a contract by the U. S. Department of Energy, National Energy Technology Laboratory under the Project Title ''Airborne, Optical Remote Sensing of Methane and Ethane for Natural Gas Pipeline Leak Detection'' on October 14, 2002. The third six-month technical report contains a summary of the progress made towards finalizing the design and assembling the airborne, remote methane and ethane sensor. The vendor has been chosen and is on contract to develop the light source with the appropriate linewidth and spectral shape to best utilize the Ophir gas correlation software. Ophir has expanded upon the target reflectance testing begun in the previous performance period by replacing the experimental receiving optics with the proposed airborne large aperture telescope, which is theoretically capable of capturing many times more signal return. The data gathered from these tests has shown the importance of optimizing the fiber optic receiving fiber to the receiving optic and has helped Ophir to optimize the design of the gas cells and narrowband optical filters. Finally, Ophir will discuss remaining project issues that may impact the success of the project.

  20. Electromagnetic matrix elements for negative parity nucleons

    E-Print Network [OSTI]

    Benjamin Owen; Waseem Kamleh; Derek Leinweber; Selim Mahbub; Benjamin Menadue

    2014-12-15T23:59:59.000Z

    Here we present preliminary results for the evaluation of the electromagnetic form factors for the lowest-lying negative-parity, spin-$\\frac{1}{2}$ nucleons, namely the $S_{11}(1535)$ and $S_{11}(1650)$, through the use of the variational method. We find that the characteristics of the electric form factor, $G_{E}$, are similar between these states, however significant differences are observed between the quark-sector contributions to the magnetic form factor, $G_{M}$. Within simple constituent quark models, these states are understood to be admixtures of $s=\\frac{1}{2}$ and $s=\\frac{3}{2}$ states coupled to orbital angular momentum $\\ell = 1$. Our results reveal a qualitative difference in the manner in which the singly-represented quark sector contributes to these baryon magnetic form factors.

  1. Theory of Dipole Induced Electromagnetic Transparency

    E-Print Network [OSTI]

    Puthumpally-Joseph, Raiju; Sukharev, Maxim; Charron, Eric

    2015-01-01T23:59:59.000Z

    A detailed theory describing linear optics of vapors comprised of interacting multi-level quantum emitters is proposed. It is shown both by direct integration of Maxwell-Bloch equations and using a simple analytical model that at large densities narrow transparency windows appear in otherwise completely opaque spectra. The existence of such windows is attributed to overlapping resonances. This effect, first introduced for three-level systems in [R. Puthumpally-Joseph, M. Sukharev, O. Atabek and E. Charron, Phys. Rev. Lett. 113, 163603 (2014)], is due to strongly enhanced dipole-dipole interactions at high emitters' densities. The presented theory extends this effect to the case of multilevel systems. The theory is applied to the D1 transitions of interacting Rb-85 atoms. It is shown that at high atomic densities, Rb-85 atoms can behave as three-level emitters exhibiting all the properties of dipole induced electromagnetic transparency. Applications including slow light and laser pulse shaping are also propose...

  2. Dissipative electromagnetic solitary waves in collisional plasmas

    SciTech Connect (OSTI)

    Borhanian, Jafar [Department of Physics, Faculty of Science, University of Mohaghegh Ardabili, P.O.Box 179, Ardabil (Iran, Islamic Republic of)

    2012-08-15T23:59:59.000Z

    The propagation of linearly polarized electromagnetic (EM) waves in a collisional plasma is studied using multiple scale perturbation technique in a weakly nonlinear regime. A complex linear dispersion relation and a complex group velocity are obtained for EM waves propagating in a plasma and their dependence on system parameters is investigated. It is shown that the amplitude of EM pulse is governed by an envelope equation similar to a cubic complex Ginzburg-Landau equation. A traveling bright solitary wave solution for envelope equation is found, its existence condition in parameter space is explored and variation of its profile with system parameters is manipulated. Monitoring temporal evolution of traveling solitary wave solution provides more insight into the nature of this solution and ensures that depending on the parameters of the system, solitary wave solution may behave like a stationary soliton or may exhibit the behavior of a breathing soliton.

  3. Indexing contamination surveys

    SciTech Connect (OSTI)

    Brown, R.L.

    1998-02-06T23:59:59.000Z

    The responsibility for safely managing the Tank Farms at Hanford belongs to Lockheed Martin Hanford Corporation which is part of the six company Project Hanford Management Team led by Fluor Daniel Hanford, Inc.. These Tank Farm Facilities contain numerous outdoor contamination areas which are surveyed at a periodicity consistent with the potential radiological conditions, occupancy, and risk of changes in radiological conditions. This document describes the survey documentation and data tracking method devised to track the results of contamination surveys this process is referred to as indexing. The indexing process takes a representative data set as an indicator for the contamination status of the facility. The data are further manipulated into a single value that can be tracked and trended using standard statistical methodology. To report meaningful data, the routine contamination surveys must be performed in a manner that allows the survey method and the data collection process to be recreated. Three key criteria are necessary to accomplish this goal: Accurate maps, consistent documentation, and consistent consolidation of data meeting these criteria provides data of sufficient quality to be tracked. Tracking of survey data is accomplished by converting the individual survey results into a weighted value, corrected for the actual number of survey points. This information can be compared over time using standard statistical analysis to identify trends. At the Tank Farms, the need to track and trend the facility`s radiological status presents unique challenges. Many of these Tank Farm facilities date back to the second world war. The Tank Farm Facilities are exposed to weather extremes, plant and animal intrusion, as well as all of the normal challenges associated with handling radiological waste streams. Routine radiological surveys did not provide a radiological status adequate for continuing comparisons.

  4. SIZE DISTRIBUTION AND RATE OF PRODUCTION OF AIRBORNE PARTICULATE MATTER GENERATED DURING METAL CUTTING

    SciTech Connect (OSTI)

    M.A. Ebadian, Ph.D.; S.K. Dua, Ph.D., C.H.P.; Hillol Guha, Ph.D.

    2001-01-01T23:59:59.000Z

    During deactivation and decommissioning activities, thermal cutting tools, such as plasma torch, laser, and gasoline torch, are used to cut metals. These activities generate fumes, smoke and particulates. These airborne species of matter, called aerosols, may be inhaled if suitable respiratory protection is not used. Inhalation of the airborne metallic aerosols has been reported to cause ill health effects, such as acute respiratory syndrome and chromosome damage in lymphocytes. In the nuclear industry, metals may be contaminated with radioactive materials. Cutting these metals, as in size reduction of gloveboxes and tanks, produces high concentrations of airborne transuranic particles. Particles of the respirable size range (size < 10 {micro}m) deposit in various compartments of the respiratory tract, the fraction and the site in the respiratory tract depending on the size of the particles. The dose delivered to the respiratory tract depends on the size distribution of the airborne particulates (aerosols) and their concentration and radioactivity/toxicity. The concentration of airborne particulate matter in an environment is dependent upon the rate of their production and the ventilation rate. Thus, measuring aerosol size distribution and generation rate is important for (1) the assessment of inhalation exposures of workers, (2) the selection of respiratory protection equipment, and (3) the design of appropriate filtration systems. Size distribution of the aerosols generated during cutting of different metals by plasma torch was measured. Cutting rates of different metals, rate of generation of respirable mass, as well as the fraction of the released kerf that become respirable were determined. This report presents results of these studies. Measurements of the particles generated during cutting of metal plates with a plasma arc torch revealed the presence of particles with mass median aerodynamic diameters of particles close to 0.2 {micro}m, arising from condensation of vaporized material and subsequent rapid formation of aggregates. Particles of larger size, resulting from ejection of melted material or fragments from the cutting zone, were also observed. This study presents data regarding the metal cutting rate, particle size distribution, and their generation rate, while using different cutting tools and metals. The study shows that respirable particles constitute only a small fraction of the released kerf.

  5. Dark Energy Survey

    ScienceCinema (OSTI)

    Roodman, Aaron; Nord, Brian; Elliot, Ann

    2014-08-12T23:59:59.000Z

    Members of the Dark Energy Survey collaboration explain what they hope to learn by studying the southern sky with the world's most advanced digital camera, mounted on a telescope in Chile.

  6. NEPA COMPLIANCE SURVEY

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

    of the State?" D D Any action that has potential impacts on Waters of the State' or wetland areas will require a separate NEPA Compliance Survey. Will the project area...

  7. BASF's Energy Survey Methodology

    E-Print Network [OSTI]

    Theising, T. R.

    2005-01-01T23:59:59.000Z

    and cost breakdowns by utility types are identified to further analyze trends. Consideration is given to the review of the various energy supply contracts for alternative options that may exist. The consumption history is used to create a distribution...BASF?s Energy Survey Methodology Thomas R. Theising BASF Corporation operates several dozen manufacturing Sites within NAFTA and periodically conducts Energy Surveys at each Site. Although these manufacturing sites represent a variety...

  8. Benchmarking survey for recycling.

    SciTech Connect (OSTI)

    Marley, Margie Charlotte; Mizner, Jack Harry

    2005-06-01T23:59:59.000Z

    This report describes the methodology, analysis and conclusions of a comparison survey of recycling programs at ten Department of Energy sites including Sandia National Laboratories/New Mexico (SNL/NM). The goal of the survey was to compare SNL/NM's recycling performance with that of other federal facilities, and to identify activities and programs that could be implemented at SNL/NM to improve recycling performance.

  9. Nonlinear Landau damping of transverse electromagnetic waves in dusty plasmas

    SciTech Connect (OSTI)

    Tsintsadze, N. L. [E. Andronikashvili Institute of Physics, Tbilisi 0171 (Georgia); Department of Physics, Government College University, Lahore 54000 (Pakistan); Salam Chair in Physics, Government College University, Lahore 54000 (Pakistan); Chaudhary, Rozina [Department of Physics, Government College University, Lahore 54000 (Pakistan); Salam Chair in Physics, Government College University, Lahore 54000 (Pakistan); Shah, H. A. [Department of Physics, Government College University, Lahore 54000 (Pakistan); Murtaza, G. [Salam Chair in Physics, Government College University, Lahore 54000 (Pakistan)

    2009-04-15T23:59:59.000Z

    High-frequency transverse electromagnetic waves in a collisionless isotropic dusty plasma damp via nonlinear Landau damping. Taking into account the latter we have obtained a generalized set of Zakharov equations with local and nonlocal terms. Then from this coupled set of Zakharov equations a kinetic nonlinear Schroedinger equation with local and nonlocal nonlinearities is derived for special cases. It is shown that the modulation of the amplitude of the electromagnetic waves leads to the modulation instability through the nonlinear Landau damping term. The maximum growth rate is obtained for the special case when the group velocity of electromagnetic waves is close to the dust acoustic velocity.

  10. Electromagnetic Radiation and Motion of Really Shaped Particle

    E-Print Network [OSTI]

    Jozef Klacka

    2001-08-13T23:59:59.000Z

    Relativistically covariant form of equation of motion for real particle (neutral in charge) under the action of electromagnetic radiation is derived. Various formulations of the equation of motion in the proper frame of reference of the particle are used. Main attention is devoted to the reformulation of the equation of motion in the general frame of reference, e. g., in the frame of reference of the source of electromagnetic radiation. This is the crucial form of equation of motion in applying it to motion of particles (cosmic dust, asteroids, ...) in the Universe if electromagnetic radiation acts on the particles. General relativistic equation of motion is presented.

  11. Inferring black hole charge from backscattered electromagnetic radiation

    E-Print Network [OSTI]

    Luís C. B. Crispino; Sam R. Dolan; Atsushi Higuchi; Ednilton S. de Oliveira

    2014-09-16T23:59:59.000Z

    We compute the scattering cross section of Reissner-Nordstr\\"om black holes for the case of an incident electromagnetic wave. We describe how scattering is affected by both the conversion of electromagnetic to gravitational radiation, and the parity-dependence of phase shifts induced by the black hole charge. The latter effect creates a helicity-reversed scattering amplitude that is non-zero in the backward direction. We show that from the character of the electromagnetic wave scattered in the backward direction it is possible, in principle, to infer if a static black hole is charged.

  12. Electromagnetic energy dispersion in a 5D universe

    SciTech Connect (OSTI)

    Hartnett, John G. [School of Physics, University of Western Australia, 35 Stirling Hwy, Crawley 6009 WA Australia (Australia)

    2010-06-15T23:59:59.000Z

    Electromagnetism is analyzed in a 5D expanding universe. Compared to the usual 4D description of electrodynamics it can be viewed as adding effective charge and current densities to the universe that are static in time. These lead to effective polarization and magnetization of the vacuum, which is most significant at high redshift. Electromagnetic waves propagate but group and phase velocities are dispersive. This introduces a new energy scale to the cosmos. And as a result electromagnetic waves propagate with superluminal speeds but no energy is transmitted faster than the canonical speed of light c.

  13. TRANSPORTATION TOMORROW SURVEY DESIGN AND CONDUCT OF THE SURVEY

    E-Print Network [OSTI]

    Toronto, University of

    OF THE SURVEY Prepared for the Transportation Information Steering Committee by the Data Management Group Bernard Farrol Toronto Transit Commission Allen Reid Town of Orangeville The survey was managedTRANSPORTATION TOMORROW SURVEY 2001 DESIGN AND CONDUCT OF THE SURVEY #12;TRANSPORTATION TOMORROW

  14. SURVEY LEADERSHIP The Manager's Guide to Survey Feedback & Action Planning

    E-Print Network [OSTI]

    Squire, Larry R.

    SURVEY LEADERSHIP The Manager's Guide to Survey Feedback & Action Planning A guide designed to help is subject to change without notice. #12;Morehead Associates Page 2 of 115 Manager's Guide to Survey Feedback;Morehead Associates Page 3 of 115 Manager's Guide to Survey Feedback and Action Planning Action Planning

  15. STEP Participant Survey Executive Summary

    Broader source: Energy.gov [DOE]

    STEP Participant Survey Executive Summary, from the Tool Kit Framework: Small Town University Energy Program (STEP).

  16. Low-cost electromagnetic tagging : design and implementation

    E-Print Network [OSTI]

    Fletcher, Richard R. (Richard Ribon)

    2002-01-01T23:59:59.000Z

    Several implementations of chipless RFID (Radio Frequency Identification) tags are presented and discussed as low-cost alternatives to chip-based RFID tags and sensors. An overview of present-day near-field electromagnetic ...

  17. Symmetry aspects of fermions coupled to torsion and electromagnetic fields

    E-Print Network [OSTI]

    J. L. Boldo; C. A. G. Sasaki

    2002-09-24T23:59:59.000Z

    We study and explore the symmetry properties of fermions coupled to dynamical torsion and electromagnetic fields. The stability of the theory upon radiative corrections as well as the presence of anomalies are investigated.

  18. Electromagnetic Extraction and Annihilation of Antiprotons for Spacecraft Propulsion

    E-Print Network [OSTI]

    . Zayas, Raymond J. Sedwick May, 2008 SSL # 3-08 #12;#12;Electromagnetic Extraction and Annihilation of Antiprotons for Spacecraft Propulsion Daniel A. Zayas, Raymond J. Sedwick May, 2008 SSL # 3-08 This work

  19. Electromagnetic modeling of terahertz quantum cascade laser waveguides and resonators

    E-Print Network [OSTI]

    Kohen, Stephen Michael, 1980-

    2004-01-01T23:59:59.000Z

    Finite-element numerical modeling and analysis of electromagnetic waveguides and resonators used in terahertz (THz) quantum cascade lasers (QCLs) is presented. Simulations and analysis of two types were performed: ...

  20. Electromagnetic Interference (EMI) Shielding of Single-Walled Carbon

    E-Print Network [OSTI]

    Gao, Hongjun

    , electrically conducting polymer composites have gained popularity recently because of their light weight (SWNT)-polymer composites have been fabricated to evaluate the electromagnetic interference (EMI) of a composite material depends on many factors, including the filler's intrinsic conductivity, dielectric

  1. Design Optimization of electromagnetic actuator by genetic algorithm

    E-Print Network [OSTI]

    ELBEZ

    2008-02-26T23:59:59.000Z

    condition in the design or in the optimization of electromagnetic ... propose a new approach to optimize linear actuator. This new .... derivative of the stored magnetic energy with respect ..... H. Poorzahedy “Hybrid meta-heuristic algorithms.

  2. A scalable electro-magnetic communication system for underwater swarms

    E-Print Network [OSTI]

    Zimmer, Uwe

    A scalable electro-magnetic communication system for underwater swarms Felix Schill 1 Uwe R. Zimmer for communication is small compared to propulsion requirements. Communication of state information can there- fore

  3. Fast dynamic force computation for electrostatic and electromagnetic conductors 

    E-Print Network [OSTI]

    Koteeswaran, Prabhavathi

    2005-02-17T23:59:59.000Z

    This thesis presents an improved method for dynamic force computation applicable to both electrostatic and electromagnetic conductors with complex 3D geometries. During the transient simulation of electrostatic actuated MEMS, the positions...

  4. Horizontal electromagnetic casting of thin metal sheets

    DOE Patents [OSTI]

    Hull, John R. (Hinsdale, IL); Lari, Robert J. (Aurora, IL); Praeg, Walter F. (Palos Park, IL); Turner, Larry R. (Naperville, IL)

    1987-01-01T23:59:59.000Z

    Thin metal sheets are cast by magnetically suspending molten metal deposited within a ferromagnetic yoke and between AC conducting coils and linearly displacing the magnetically levitated liquid metal while it is being cooled to form a solid metal sheet. Magnetic flux increases as the molten metal sheet moves downward and decreases as the molten metal sheet moves upward to stabilize the sheet and maintain it in equilibrium as it is linearly displaced and solidified by cooling gases. A conducting shield is electrically coupled to the molten metal sheet by means of either metal sheet engaging rollers or brushes on the solidified metal, and by means of an electrode in the vessel containing the molten metal thereby providing a return path for the eddy currents induced in the metal sheet by the AC coil generated magnetic flux. Variation in the geometry of the conducting shield allows the magnetic flux between the metal sheet and the conducting shield to be varied and the thickness in surface quality of the metal sheet to be controlled. Side guards provide lateral containment for the molten metal sheet and stabilize and shape the magnetic field while a leader sheet having electromagnetic characteristics similar to those of the metal sheet is used to start the casting process and precedes the molten metal sheet through the magnet and forms a continuous sheet therewith. The magnet may be either U-shaped with a single racetrack coil or may be rectangular with a pair of facing bedstead coils.

  5. Horizontal electromagnetic casting of thin metal sheets

    DOE Patents [OSTI]

    Hull, John R. (Hinsdale, IL); Lari, Robert J. (Aurora, IL); Praeg, Walter F. (Palos Park, IL); Turner, Larry R. (Naperville, IL)

    1988-01-01T23:59:59.000Z

    Thin metal sheets are cast by magnetically suspending molten metal deposited within a ferromagnetic yoke and between AC conducting coils and linearly displacing the magnetically levitated liquid metal while it is being cooled to form a solid metal sheet. Magnetic flux increases as the molten metal sheet moves downward and decreases as the molten metal sheet moves upward to stabilize the sheet and maintain it in equilibrium as it is linearly displaced and solidified by cooling gases. A conducting shield is electrically coupled to the molten metal sheet by means of either metal sheet engaging rollers or brushes on the solidified metal, and by means of an electrode in the vessel containing the molten metal thereby providing a return path for the eddy currents induced in the metal sheet by the AC coil generated magnetic flux. Variation in the geometry of the conducting shield allows the magnetic flux between the metal sheet and the conducting shield to be varied and the thickness in surface quality of the metal sheet to be controlled. Side guards provide lateral containment for the molten metal sheet and stabilize and shape the magnetic field while a leader sheet having electromagnetic characteristics similar to those of the metal sheet is used to start the casting process and precedes the molten metal sheet through the magnet and forms a continuous sheet therewith. The magnet may be either U-shaped with a single racetrack coil or may be rectangular with a pair of facing bedstead coils.

  6. Electromagnetic anti-jam telemetry tool

    DOE Patents [OSTI]

    Ganesan, Harini (Sugar Land, TX); Mayzenberg, Nataliya (Missouri City, TX)

    2008-02-12T23:59:59.000Z

    A mud-pulse telemetry tool includes a tool housing, a motor disposed in the tool housing, and a magnetic coupling coupled to the motor and having an inner shaft and an outer shaft. The tool may also include a stator coupled to the tool housing, a restrictor disposed proximate the stator and coupled to the magnetic coupling, so that the restrictor and the stator adapted to generate selected pulses in a drilling fluid when the restrictor is selectively rotated. The tool may also include a first anti-jam magnet coupled to the too housing, and an second anti-jam magnet disposed proximate the first anti-jam magnet and coupled to the inner shaft and/or the outer shaft, wherein at least one of the first anti-jam magnet and the second anti-jam magnet is an electromagnet, and wherein the first anti-jam magnet and the second anti-jam magnet are positioned with adjacent like poles.

  7. Nucleon Structure Studies with Electromagnetic Probes

    SciTech Connect (OSTI)

    Vineyard, Michael F.

    2011-03-31T23:59:59.000Z

    Summarized in this report is the progress achieved during the period from March 1, 2008 to June 14, 2009 under contract number DE-FG02-03ER41252. This is the final technical report under this contract. The experimental work described here is part of the electromagnetic nuclear physics program of the CEBAF Large Acceptance Spectrometer (CLAS) Collaboration at the Thomas Jefferson National Accelerator Facility (Jefferson Lab) that published 17 journal articles during the period of this report. One of these journal articles reported on the results of precise measurements of the neutron magnetic form factor. I was a spokesperson on this experiment and the publication of these results is the culmination of years of effort by a small subset of the CLAS Collaboration. As usual, undergraduate students were involved in all aspects of this work. Three Union College students participated in this program during the window of this report and one presented a paper on his work at the 2009 National Conference on Undergraduate Research (NCUR22). In this report, I discuss recent progress on the measurements of the neutron magnetic form factor and describe my service work for the CLAS Collaboration.

  8. Binary power multiplier for electromagnetic energy

    DOE Patents [OSTI]

    Farkas, Zoltan D. (203 Leland Ave., Menlo Park, CA 94025)

    1988-01-01T23:59:59.000Z

    A technique for converting electromagnetic pulses to higher power amplitude and shorter duration, in binary multiples, splits an input pulse into two channels, and subjects the pulses in the two channels to a number of binary pulse compression operations. Each pulse compression operation entails combining the pulses in both input channels and selectively steering the combined power to one output channel during the leading half of the pulses and to the other output channel during the trailing half of the pulses, and then delaying the pulse in the first output channel by an amount equal to half the initial pulse duration. Apparatus for carrying out each of the binary multiplication operation preferably includes a four-port coupler (such as a 3 dB hybrid), which operates on power inputs at a pair of input ports by directing the combined power to either of a pair of output ports, depending on the relative phase of the inputs. Therefore, by appropriately phase coding the pulses prior to any of the pulse compression stages, the entire pulse compression (with associated binary power multiplication) can be carried out solely with passive elements.

  9. Calibrating Accelerometers Using an Electromagnetic Launcher

    SciTech Connect (OSTI)

    Erik Timpson

    2012-05-13T23:59:59.000Z

    A Pulse Forming Network (PFN), Helical Electromagnetic Launcher (HEML), Command Module (CM), and Calibration Table (CT) were built and evaluated for the combined ability to calibrate an accelerometer. The PFN has a maximum stored energy of 19.25 kJ bank and is fired by a silicon controlled rectifier (SCR), with appropriate safety precautions. The HEML is constructed out of G-10 fiberglass and is designed to accelerate 600 grams to 10 meters per second. The CM is microcontroller based running Arduino Software. The CM has a keypad input and 7 segment outputs of the bank voltage and desired voltage. After entering a desired bank voltage, the CM controls the charge of the PFN. When the two voltages are equal it allows the fire button to send a pulse to the SCR to fire the PFN and in turn, the HEML. The HEML projectile's tip hits a target that is held by the CT. The CT consists of a table to hold the PFN and HEML, a vacuum chuck, air bearing, velocity meter and catch pot. The Target is held with the vacuum chuck awaiting impact. After impact, the air bearing allows the target to fall freely for the velocity meter to get an accurate reading. A known acceleration is determined from the known change in velocity of the target. Thus, if an accelerometer was attached to the target, the measured value can be compared to the known value.

  10. Electromagnetic Studies of Mesons, Nucleons, and Nuclei

    SciTech Connect (OSTI)

    Baker, Oliver K.

    2013-08-20T23:59:59.000Z

    Professor Baker was a faculty member at Hampton University in Hampton, Virginia, and, jointly, a Staff Physicist at Jefferson Lab in nearby Newport News from September 1989 to July 2006. The Department of Energy (DOE) funded the grant DE-FG02-97ER41035 Electromagnetic Studies of Mesons, Nucleons, and Nuclei, while Baker was in this joint appointment. Baker sent a closeout report on these activities to Hampton University’s Sponsored Research Office some years ago, shortly after joining Yale University in 2006. In the period around 2001, the research grant with Baker as the Principal Investigator (PI) was put under the supervision of Professor Liguang Tang at Hampton University. Baker continued to pursue the research while in this join appointment, however the administrative responsibilities with the DOE and with Hampton University rested with Professor Tang after 2001, to my recollection. What is written in this document is from Baker’s memory of the research activities, which he has not pursued since joining the Yale University faculty.

  11. Design of high temperature high speed electromagnetic axial thrust bearing

    E-Print Network [OSTI]

    Mohiuddin, Mohammad Waqar

    2002-01-01T23:59:59.000Z

    DESIGN OF HIGH TEMPERATURE HIGH SPEED ELECTROMAGNETIC AXIAL THRUST BEARING A Thesis by MOHAMMAD WAQAR MOHIUDDIN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 2002 Major Subject: Mechanical Engineering DESIGN OF HIGH TEMPERATURE HIGH SPEED ELECTROMAGNETIC AXIAL THRUST BEARING A Thesis by MOHAMMAD WAQAR MOHIUDDIN Submitted to Texas A&M University in partial fulfillment...

  12. The universal C*-algebra of the electromagnetic field

    E-Print Network [OSTI]

    Buchholz, Detlev; Ruzzi, Giuseppe; Vasselli, Ezio

    2015-01-01T23:59:59.000Z

    A universal C*-algebra of the electromagnetic field is constructed. It is represented in any quantum field theory which incorporates electromagnetism and expresses basic features of this field such as Maxwell's equations, Poincar\\'e covariance and Einstein causality. Moreover, topological properties of the field resulting from Maxwell's equations are encoded in the algebra, leading to commutation relations with values in its center. The representation theory of the algebra is discussed with focus on vacuum representations, fixing the dynamics of the field.

  13. Rydberg Atoms Ionisation by Microwave Field and Electromagnetic Pulses

    E-Print Network [OSTI]

    B. Kaulakys; G. Vilutis

    1995-04-10T23:59:59.000Z

    A simple theory of the Rydberg atoms ionisation by electromagnetic pulses and microwave field is presented. The analysis is based on the scale transformation which reduces the number of parameters and reveals the functional dependencies of the processes. It is shown that the observed ionisation of Rydberg atoms by subpicosecond electromagnetic pulses scale classically. The threshold electric field required to ionise a Rydberg state may be simply evaluated in the photonic basis approach for the quantum dynamics or from the multiphoton ionisation theory.

  14. Fast dynamic force computation for electrostatic and electromagnetic conductors

    E-Print Network [OSTI]

    Koteeswaran, Prabhavathi

    2005-02-17T23:59:59.000Z

    FAST DYNAMIC FORCE COMPUTATION FOR ELECTROSTATIC AND ELECTROMAGNETIC CONDUCTORS AThesis by PRABHAVATHI KOTEESWARAN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 2004 Major Subject: Computer Engineering FAST DYNAMIC FORCE COMPUTATION FOR ELECTROSTATIC AND ELECTROMAGNETIC CONDUCTORS AThesis by PRABHAVATHI KOTEESWARAN Submitted to Texas A&M University in partial fulfillment...

  15. Spatiotemporal electromagnetic soliton and spatial ring formation in nonlinear metamaterials

    SciTech Connect (OSTI)

    Zhang Jinggui; Wen Shuangchun; Xiang Yuanjiang; Wang Youwen; Luo Hailu [Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Computer and Communication, Hunan University, Changsha 410082 (China)

    2010-02-15T23:59:59.000Z

    We present a systematic investigation of ultrashort electromagnetic pulse propagation in metamaterials (MMs) with simultaneous cubic electric and magnetic nonlinearity. We predict that spatiotemporal electromagnetic solitons may exist in the positive-index region of a MM with focusing nonlinearity and anomalous group velocity dispersion (GVD), as well as in the negative-index region of the MM with defocusing nonlinearity and normal GVD. The experimental circumstances for generating and manipulating spatiotemporal electromagnetic solitons can be created by elaborating appropriate MMs. In addition, we find that, in the negative-index region of a MM, a spatial ring may be formed as the electromagnetic pulse propagates for focusing nonlinearity and anomalous GVD; while the phenomenon of temporal splitting of the electromagnetic pulse may appear for the same case except for the defocusing nonlinearity. Finally, we demonstrate that the nonlinear magnetization makes the sign of effective electric nonlinear effect switchable due to the combined action of electric and magnetic nonlinearity, exerting a significant influence on the propagation of electromagnetic pulses.

  16. Nuclear electromagnetic pulse and the electric power system

    SciTech Connect (OSTI)

    Legro, J.R.; Reed, T.J.

    1985-01-01T23:59:59.000Z

    A single, high-altitude nuclear detonation over the continental United States can expose large geographic areas to transient, electromagnetic pulse (EMP). The initial electromagnetic fields produced by this event have been defined as high-altitude electromagnetic pulse (HEMP). Later-time, low frequency fields have been defined as magnetohydrodynamic-electromagnetic pulse (MHD-EMP). Nuclear detonations at, or near the surface of the earth can also produce transient EMP. These electromagnetic phenomena have been defined as source region electromagnetic pulse (SREMP). The Division of Electric Energy Systems (EES) of the United States Department of Energy (DOE) has formulated and implemented a Program Plan to assess the possible effects of the above nuclear EMP on civilian electric power systems. This unclassified research effort is under the technical leadership of the Oak Ridge National Laboratory. This paper presents a brief perspective of EMP phenomenology and important interaction issues for power systems based on research performed by Westinghouse Advanced Systems Technology as a principal subcontractor in the research effort.

  17. The Dark Energy Survey

    E-Print Network [OSTI]

    The Dark Energy Survey Collaboration

    2005-10-12T23:59:59.000Z

    We describe the Dark Energy Survey (DES), a proposed optical-near infrared survey of 5000 sq. deg of the South Galactic Cap to ~24th magnitude in SDSS griz, that would use a new 3 sq. deg CCD camera to be mounted on the Blanco 4-m telescope at Cerro Telolo Inter-American Observatory (CTIO). The survey data will allow us to measure the dark energy and dark matter densities and the dark energy equation of state through four independent methods: galaxy clusters, weak gravitational lensing tomography, galaxy angular clustering, and supernova distances. These methods are doubly complementary: they constrain different combinations of cosmological model parameters and are subject to different systematic errors. By deriving the four sets of measurements from the same data set with a common analysis framework, we will obtain important cross checks of the systematic errors and thereby make a substantial and robust advance in the precision of dark energy measurements.

  18. The particulate and vapor phase components of airborne polyaromatic hydrocarbons (PAHs) in coal gasification pilot plants 

    E-Print Network [OSTI]

    Brink, Eric Jon

    1980-01-01T23:59:59.000Z

    , the hot gases flow into a condenser where they are (1-3, 7) cooled and the liquid sulfur 1s removed. The final steps 1n the gasif1cation process are to compr ess the methanated gas from appr oximately 140 psig to pipel1ne pr essure of 1000 psig...THE PARTICULATE AND VAPOR PHASE COMPONENTS OF AIRBORNE POLYAROMATIC HYDROCARBONS(PAHs) IN COAL GASIFICATION PILOT PLANTS A Thesis by ERIC JON BRINK Submitted to the Graduate College of Texas A & M University in partial fulfillment...

  19. ARM - Field Campaign - ARM Airborne Carbon Measurements (ARM-ACME V)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy, science,SpeedingWu,IntelligenceYouQualityAirborne Carbon Measurements

  20. Innovative Electromagnetic Sensors for Pipeline Crawlers

    SciTech Connect (OSTI)

    J. Bruce Nestleroth

    2006-05-04T23:59:59.000Z

    Internal inspection of pipelines is an important tool for ensuring safe and reliable delivery of fossil energy products. Current inspection systems that are propelled through the pipeline by the product flow cannot be used to inspect all pipelines because of the various physical barriers they encounter. Recent development efforts include a new generation of powered inspection platforms that crawl slowly inside a pipeline and are able to maneuver past the physical barriers that can limit inspection. At Battelle, innovative electromagnetic sensors are being designed and tested for these new pipeline crawlers. The various sensor types can be used to assess a wide range of pipeline anomalies including corrosion, mechanical damage, and cracks. Battelle is in the final year on a projected three-year development effort. In the first year, two innovative electromagnetic inspection technologies were designed and tested. Both were based on moving high-strength permanent magnets to generate inspection energy. One system involved translating permanent magnets towards the pipe. A pulse of electric current would be induced in the pipe to oppose the magnetization according to Lenz's Law. The decay of this pulse would indicate the presence of defects in the pipe wall. This inspection method is similar to pulsed eddy current inspection methods, with the fundamental difference being the manner in which the current is generated. Details of this development effort were reported in the first semiannual report on this project. The second inspection methodology is based on rotating permanent magnets. The rotating exciter unit produces strong eddy currents in the pipe wall. At distances of a pipe diameter or more from the rotating exciter, the currents flow circumferentially. These circumferential currents are deflected by pipeline defects such as corrosion and axially aligned cracks. Simple sensors are used to detect the change in current densities in the pipe wall. The second semiannual report on this project reported on experimental and modeling results. The results showed that the rotating system was more adaptable to pipeline inspection and therefore only this system will be carried into the second year of the sensor development. In the third reporting period, the rotating system inspection was further developed. Since this is a new inspection modality without published fundamentals to build upon, basic analytical and experimental investigations were performed. A closed form equation for designing rotating exciters and positioning sensors was derived from fundamental principles. Also signal processing methods were investigated for detection and assessment of pipeline anomalies. A lock in amplifier approach was chosen as the method for detecting the signals. Finally, mechanical implementations for passing tight restrictions such as plug valves were investigated. This inspection concept is new and unique; a United States patent application has been submitted. In this reporting period, a general design of the rotating permanent magnet inspection system is presented. The rotating permanent magnet inspection system is feasible for pipes ranging in diameter from 8 to 18 inches using a two pole configuration. Experimental results and theoretical calculations provide the basis for selection of the critical design parameters. The parameters include a significant magnet to pipe separation that will facilitate the passage of pipeline features. With the basic values of critical components established, the next step is a detailed mechanical design of a pipeline ready inspection system.

  1. Electromagnetic Signatures of Massive Black Hole Binaries

    E-Print Network [OSTI]

    Tamara Bogdanovic; Britton D. Smith; Michael Eracleous; Steinn Sigurdsson

    2006-09-28T23:59:59.000Z

    We model the electromagnetic emission signatures of massive black hole binaries (MBHBs) with an associated gas component. The method comprises numerical simulations of relativistic binaries and gas coupled with calculations of the physical properties of the emitting gas. We calculate the accretion powered UV/X-ray and Halpha light curves and the Halpha emission line profiles. The simulations have been carried out with a modified version of the parallel tree SPH code Gadget. The heating, cooling, and radiative processes for the solar metallicity gas have been calculated with the photoionization code Cloudy. We investigate gravitationally bound, sub-parsec binaries which have not yet entered the gravitational radiation phase. The results from the first set of calculations, carried out for a coplanar binary and gas disk, suggest that the outbursts in the X-ray light curve are pronounced during pericentric passages and can serve as a fingerprint for this type of binaries if periodic outbursts are a long lived signature of the binary. The Halpha emission-line profiles also offer strong indications of a binary presence and may be used as a criterion for selection of MBHB candidates for further monitoring from existing archival data. The orbital period and mass ratio of a binary could be determined from the Halpha light curves and profiles of carefully monitored candidates. Although systems with the orbital periods studied here are not within the frequency band of the Laser Interferometer Space Antenna (LISA), their discovery is important for understanding of the merger rates of MBHBs and the evolution of such binaries through the last parsec and towards the detectable gravitational wave window.

  2. Electromagnetic scattering and absorption by aerosol agglomerates

    SciTech Connect (OSTI)

    Chen, Hsingyi.

    1989-01-01T23:59:59.000Z

    Calculation of scattering and absorption by smoke aerosols is required in many applications, including characterization of atmospheric aerosols, prediction of climatic impact of smoke, evaluation of smoke effectiveness in obscuration, calculation of heat transfer from flames, and evaluation of various scenarios of nuclear winter. In this dissertation two procedures were developed to accurately make these calculations utilizing realistic models of smoke agglomerates including oriented chains and fractal geometries. First the Iterative Extended Boundary Condition Method (IEBCM) was utilized to calculate the electromagnetic (EM) scattering and absorption of elongated aerosol particles. The computation efficiency and capability of IEBCM were improved by implementing the sectioning and the segmentation procedures. The sectioning procedure resulted in improving the computational efficiency and the segmentation method made it possible to make calculations for particles with aspect ratios as high as 250. The other procedure employed the Volume Integral Equation Formulation (VIEF) to compute the EM scattering and absorption by agglomerates of complex geometries. The validity of the procedure was checked first by comparing the obtained results with those obtained from the Mie solution for a spherical object and with the IEBCM for nonspherical objects. The comparison between results showed excellent agreement and hence validated the accuracy of the VIEF. The VIEF solution was then used to make calculations for five types of fractal agglomerates of smoke aerosol particles with fractal dimensions in the range from 1.7 to 1.9. The results obtained were compared with those based on the fractal theory recently published by Berry and Percival, and some differences were observed.

  3. Operations Improvement Surveys

    E-Print Network [OSTI]

    Guide, J. J.; O'Brien, W. J.

    1984-01-01T23:59:59.000Z

    Exxon Chemical Company developed unique site-wide energy optimization technology in the mid1970's. This technology was applied by means of site energy surveys which were carried out at every major Exxon facility throughout the world during the 1976...

  4. Solar Site Survey Toolkit

    Broader source: Energy.gov [DOE]

    After a couple outings, a principal technologist at Sandia National Laboratories saw a need for a travel kit that would have the necessary tools to make the task of site surveys more manageable and safer. They have had great success using the kit in the field already.

  5. Flight Testing of an Advanced Airborne Natural Gas Leak Detection System

    SciTech Connect (OSTI)

    Dawn Lenz; Raymond T. Lines; Darryl Murdock; Jeffrey Owen; Steven Stearns; Michael Stoogenke

    2005-10-01T23:59:59.000Z

    ITT Industries Space Systems Division (Space Systems) has developed an airborne natural gas leak detection system designed to detect, image, quantify, and precisely locate leaks from natural gas transmission pipelines. This system is called the Airborne Natural Gas Emission Lidar (ANGEL) system. The ANGEL system uses a highly sensitive differential absorption Lidar technology to remotely detect pipeline leaks. The ANGEL System is operated from a fixed wing aircraft and includes automatic scanning, pointing system, and pilot guidance systems. During a pipeline inspection, the ANGEL system aircraft flies at an elevation of 1000 feet above the ground at speeds of between 100 and 150 mph. Under this contract with DOE/NETL, Space Systems was funded to integrate the ANGEL sensor into a test aircraft and conduct a series of flight tests over a variety of test targets including simulated natural gas pipeline leaks. Following early tests in upstate New York in the summer of 2004, the ANGEL system was deployed to Casper, Wyoming to participate in a set of DOE-sponsored field tests at the Rocky Mountain Oilfield Testing Center (RMOTC). At RMOTC the Space Systems team completed integration of the system and flew an operational system for the first time. The ANGEL system flew 2 missions/day for the duration for the 5-day test. Over the course of the week the ANGEL System detected leaks ranging from 100 to 5,000 scfh.

  6. Health physics manual of good practices for the prompt detection of airborne plutonium in the workplace

    SciTech Connect (OSTI)

    Not Available

    1988-07-01T23:59:59.000Z

    This manual provides guidance to US Department of Energy (DOE) facilities on the prompt detection of airborne plutonium in the workplace. Information is first given to aid in detection systems that will function effectively in various workplaces. Steps in designing a system are covered: its general requirements, the plotting of workplace sources of plutonium, and methods of determining workplace airflow patterns. Guidance is provided on the proper numbers and locations of probe sites, the orientation of probes for representative sampling, and the mixture of stationary and portable probes. Recommendations for delivery in sampling systems include examination of particle loss and self-absorption problems, methods of eliminating air leakage in the system, and optimization of decontamination capabilities. System flow rate, requirements in a collection medium, burial loss and pressure drop, and prudent frequency of renewing the collection medium are among air sampling considerations covered. After a discussion of controlling airflow and of vacuum sources and system backups, the checkpoints to ensure system reliability are listed. The manual then discusses instrument specifications that provide correct airborne plutonium concentrations and reliably activate alarms. Focusing on the interrelationship of all components, essential factors in instrument reliability are addressed: the regulatory lower limit of detection and performance specifications of detectors and filters, maintenance and calibration requirements, and features of commonly used plutonium air-sampling instruments. Finally, the manual advises on establishing a documentation program to archive and evaluate the performance of a plutonium air-sampling program.

  7. Emergency Response Equipment and Related Training: Airborne Radiological Computer System (Model II)

    SciTech Connect (OSTI)

    David P. Colton

    2007-02-28T23:59:59.000Z

    The materials included in the Airborne Radiological Computer System, Model-II (ARCS-II) were assembled with several considerations in mind. First, the system was designed to measure and record the airborne gamma radiation levels and the corresponding latitude and longitude coordinates, and to provide a first overview look of the extent and severity of an accident's impact. Second, the portable system had to be light enough and durable enough that it could be mounted in an aircraft, ground vehicle, or watercraft. Third, the system must control the collection and storage of the data, as well as provide a real-time display of the data collection results to the operator. The notebook computer and color graphics printer components of the system would only be used for analyzing and plotting the data. In essence, the provided equipment is composed of an acquisition system and an analysis system. The data can be transferred from the acquisition system to the analysis system at the end of the data collection or at some other agreeable time.

  8. Non-dissipative electromagnetic media with two Lorentz null cones

    SciTech Connect (OSTI)

    Dahl, Matias F., E-mail: matias.dahl@aalto.fi

    2013-03-15T23:59:59.000Z

    We study Maxwell's equations on a 4-manifold where the electromagnetic medium is modeled by an antisymmetric (2/2 )-tensor with 21 real coefficients. In this setting the Fresnel surface is a fourth-order polynomial surface that describes the dynamical response of the medium in the geometric optics limit. For example, in an isotropic medium the Fresnel surface is a Lorentz null cone. The contribution of this paper is the pointwise description of all electromagnetic medium tensors {kappa} with real coefficients that satisfy the following three conditions: (i)medium {kappa} is invertible, (ii)medium {kappa} is skewon-free, or non-dissipative, (iii)the Fresnel surface of {kappa} is the union of two distinct Lorentz null cones. We show that there are only three classes of media with these properties and give explicit expressions in local coordinates for each class. - Highlights: Black-Right-Pointing-Pointer We find two new electromagnetic media classes for which the Fresnel surface decomposes into two light cones. Black-Right-Pointing-Pointer In a suitable setting we classify all electromagnetic media where this is the case. Black-Right-Pointing-Pointer We find an electromagnetic medium tensor with three different signal speeds in one direction. Black-Right-Pointing-Pointer The work is related to [5], which classifies all media with one light cone (in a suitable setting).

  9. Lattice p-Form Electromagnetism and Chain Field Theory

    E-Print Network [OSTI]

    Derek K. Wise

    2005-10-08T23:59:59.000Z

    Since Wilson's work on lattice gauge theory in the 1970s, discrete versions of field theories have played a vital role in fundamental physics. But there is recent interest in certain higher dimensional analogues of gauge theory, such as p-form electromagnetism, including the Kalb-Ramond field in string theory, and its nonabelian generalizations. It is desirable to discretize such `higher gauge theories' in a way analogous to lattice gauge theory, but with the fundamental geometric structures in the discretization boosted in dimension. As a step toward studying discrete versions of more general higher gauge theories, we consider the case of p-form electromagnetism. We show that discrete p-form electromagnetism admits a simple algebraic description in terms of chain complexes of abelian groups. Moreover, the model allows discrete spacetimes with quite general geometry, in contrast to the regular cubical lattices usually associated with lattice gauge theory. After constructing a suitable model of discrete spacetime for p-form electromagnetism, we quantize the theory using the Euclidean path integral formalism. The main result is a description of p-form electromagnetism as a `chain field theory' -- a theory analogous to topological quantum field theory, but with chain complexes replacing manifolds. This, in particular, gives a notion of time evolution from one `spacelike slice' of discrete spacetime to another.

  10. On the Pair Electromagnetic Pulse of a Black Hole with Electromagnetic Structure

    E-Print Network [OSTI]

    Remo Ruffini; Jay D. Salmonson; James R. Wilson; She-Sheng Xue

    1999-07-02T23:59:59.000Z

    We study the relativistically expanding electron-positron pair plasma formed by the process of vacuum polarization around an electromagnetic black hole (EMBH). Such processes can occur for EMBH's with mass all the way up to $6\\cdot 10^5M_\\odot$. Beginning with a idealized model of a Reissner-Nordstrom EMBH with charge to mass ratio $\\xi=0.1$, numerical hydrodynamic calculations are made to model the expansion of the pair-electromagnetic pulse (PEM pulse) to the point that the system is transparent to photons. Three idealized special relativistic models have been compared and contrasted with the results of the numerically integrated general relativistic hydrodynamic equations. One of the three models has been validated: a PEM pulse of constant thickness in the laboratory frame is shown to be in excellent agreement with results of the general relativistic hydrodynamic code. It is remarkable that this precise model, starting from the fundamental parameters of the EMBH, leads uniquely to the explicit evaluation of the parameters of the PEM pulse, including the energy spectrum and the astrophysically unprecedented large Lorentz factors (up to $6\\cdot 10^3$ for a $10^3 M_{\\odot}$ EMBH). The observed photon energy at the peak of the photon spectrum at the moment of photon decoupling is shown to range from 0.1 MeV to 4 MeV as a function of the EMBH mass. Correspondingly the total energy in photons is in the range of $10^{52}$ to $10^{54}$ ergs, consistent with observed gamma-ray bursts. In these computations we neglect the presence of baryonic matter which will be the subject of forthcoming publications.

  11. On the pair-electromagnetic pulse from an electromagnetic Black Hole surrounded by a Baryonic Remnant

    E-Print Network [OSTI]

    Remo Ruffini; Jay D. Salmonson; James R. Wilson; She-Sheng Xue

    2000-04-18T23:59:59.000Z

    The interaction of an expanding Pair-Electromagnetic pulse (PEM pulse) with a shell of baryonic matter surrounding a Black Hole with electromagnetic structure (EMBH) is analyzed for selected values of the baryonic mass at selected distances well outside the dyadosphere of an EMBH. The dyadosphere, the region in which a super critical field exists for the creation of electron-positron pairs, is here considered in the special case of a Reissner-Nordstrom geometry. The interaction of the PEM pulse with the baryonic matter is described using a simplified model of a slab of constant thickness in the laboratory frame (constant-thickness approximation) as well as performing the integration of the general relativistic hydrodynamical equations. The validation of the constant-thickness approximation, already presented in a previous paper Ruffini, et al.(1999) for a PEM pulse in vacuum, is here generalized to the presence of baryonic matter. It is found that for a baryonic shell of mass-energy less than 1% of the total energy of the dyadosphere, the constant-thickness approximation is in excellent agreement with full general relativistic computations. The approximation breaks down for larger values of the baryonic shell mass, however such cases are of less interest for observed Gamma Ray Bursts (GRBs). On the basis of numerical computations of the slab model for PEM pulses, we describe (i) the properties of relativistic evolution of a PEM pulse colliding with a baryonic shell; (ii) the details of the expected emission energy and observed temperature of the associated GRBs for a given value of the EMBH mass; 10^3 solar masses, and for baryonic mass-energies in the range 10^{-8} to 10^{-2} the total energy of the dyadosphere.

  12. A new well surveying tool 

    E-Print Network [OSTI]

    Haghighi, Manuchehr Mehdizabeh

    1966-01-01T23:59:59.000Z

    Bore Surveying Instrument TABLES . . . 17 1. Comparison of Measured Angles and Angles Indicated by Surveying Device for S 20 W and 13 , N 22 W and 51 . . . . . . . . . . . . . . . . . . . . 20 2. Comparison of Measured Angles and Angles Indicated... by Surveying Device for S and 19 , N and 41 . 21 3. Comparison of Measured Angles and Angles Indicated by Surveying Device for NE snd 9 , W and 45 . . . . . . . ~ 22 ABSTRNl T Ever since the advent of rotary drilling the petroleum industry has been...

  13. ARM User Survey Report

    SciTech Connect (OSTI)

    Roeder, LR

    2010-06-22T23:59:59.000Z

    The objective of this survey was to obtain user feedback to, among other things, determine how to organize the exponentially growing data within the Atmospheric Radiation Measurement (ARM) Climate Research Facility, and identify users’ preferred data analysis system. The survey findings appear to have met this objective, having received approximately 300 responses that give insight into the type of work users perform, usage of the data, percentage of data analysis users might perform on an ARM-hosted computing resource, downloading volume level where users begin having reservations, opinion about usage if given more powerful computing resources (including ability to manipulate data), types of tools that would be most beneficial to them, preferred programming language and data analysis system, level of importance for certain types of capabilities, and finally, level of interest in participating in a code-sharing community.

  14. Transverse electromagnetic horn antenna with resistively-loaded exterior surfaces

    DOE Patents [OSTI]

    Aurand, John F. (Edgewood, NM)

    1999-01-01T23:59:59.000Z

    An improved transverse electromagnetic (TEM) horn antenna comprises a resistive loading material on the exterior surfaces of the antenna plates. The resistive loading material attenuates or inhibits currents on the exterior surfaces of the TEM horn antenna. The exterior electromagnetic fields are of opposite polarity in comparison to the primary and desired interior electromagnetic field, thus inherently cause partial cancellation of the interior wave upon radiation or upon reception. Reducing the exterior fields increases the radiation efficiency of the antenna by reducing the cancellation of the primary interior field (supported by the interior surface currents). This increases the transmit gain and receive sensitivity of the TEM horn antenna, as well as improving the transient (time-domain) response.

  15. The momentum of an electromagnetic wave inside a dielectric

    SciTech Connect (OSTI)

    Testa, Massimo, E-mail: massimo.testa@roma1.infn.it

    2013-09-15T23:59:59.000Z

    The problem of assigning a momentum to an electromagnetic wave packet propagating inside an insulator has become known under the name of the Abraham–Minkowski controversy. In the present paper we re-examine this issue making the hypothesis that the forces exerted on an insulator by an electromagnetic field do not distinguish between polarization and free charges. Under this assumption we show that the Abraham expression for the radiation mechanical momentum is highly favored. -- Highlights: •We discuss an approximation to treat electrodynamics of a dielectric material. •We support the Abraham form for the electromagnetic momentum. •We deduce Snell’s law from the conservation of the Abraham momentum. •We show how to deal with the electric field discontinuity at the dielectric boundary.

  16. Surface electromagnetic wave equations in a warm magnetized quantum plasma

    SciTech Connect (OSTI)

    Li, Chunhua; Yang, Weihong [Department of Modern Physics, University of Science and Technology of China, 230026 Hefei (China); Wu, Zhengwei, E-mail: wuzw@ustc.edu.cn [Department of Modern Physics, University of Science and Technology of China, 230026 Hefei (China); Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon (Hong Kong); Center of Low Temperature Plasma Application, Yunnan Aerospace Industry Company, Kunming, 650229 Yunnan (China); Chu, Paul K. [Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon (Hong Kong)

    2014-07-15T23:59:59.000Z

    Based on the single-fluid plasma model, a theoretical investigation of surface electromagnetic waves in a warm quantum magnetized inhomogeneous plasma is presented. The surface electromagnetic waves are assumed to propagate on the plane between a vacuum and a warm quantum magnetized plasma. The quantum magnetohydrodynamic model includes quantum diffraction effect (Bohm potential), and quantum statistical pressure is used to derive the new dispersion relation of surface electromagnetic waves. And the general dispersion relation is analyzed in some special cases of interest. It is shown that surface plasma oscillations can be propagated due to quantum effects, and the propagation velocity is enhanced. Furthermore, the external magnetic field has a significant effect on surface wave's dispersion equation. Our work should be of a useful tool for investigating the physical characteristic of surface waves and physical properties of the bounded quantum plasmas.

  17. Method for imaging with low frequency electromagnetic fields

    DOE Patents [OSTI]

    Lee, Ki H. (Lafayette, CA); Xie, Gan Q. (Berkeley, CA)

    1994-01-01T23:59:59.000Z

    A method for imaging with low frequency electromagnetic fields, and for interpreting the electromagnetic data using ray tomography, in order to determine the earth conductivity with high accuracy and resolution. The imaging method includes the steps of placing one or more transmitters, at various positions in a plurality of transmitter holes, and placing a plurality of receivers in a plurality of receiver holes. The transmitters generate electromagnetic signals which diffuse through a medium, such as earth, toward the receivers. The measured diffusion field data H is then transformed into wavefield data U. The traveltimes corresponding to the wavefield data U, are then obtained, by charting the wavefield data U, using a different regularization parameter .alpha. for each transform. The desired property of the medium, such as conductivity, is then derived from the velocity, which in turn is constructed from the wavefield data U using ray tomography.

  18. Method for imaging with low frequency electromagnetic fields

    DOE Patents [OSTI]

    Lee, K.H.; Xie, G.Q.

    1994-12-13T23:59:59.000Z

    A method is described for imaging with low frequency electromagnetic fields, and for interpreting the electromagnetic data using ray tomography, in order to determine the earth conductivity with high accuracy and resolution. The imaging method includes the steps of placing one or more transmitters, at various positions in a plurality of transmitter holes, and placing a plurality of receivers in a plurality of receiver holes. The transmitters generate electromagnetic signals which diffuse through a medium, such as earth, toward the receivers. The measured diffusion field data H is then transformed into wavefield data U. The travel times corresponding to the wavefield data U, are then obtained, by charting the wavefield data U, using a different regularization parameter [alpha] for each transform. The desired property of the medium, such as conductivity, is then derived from the velocity, which in turn is constructed from the wavefield data U using ray tomography. 13 figures.

  19. Electromagnetic gauge invariance of chiral hybrid quark models

    SciTech Connect (OSTI)

    Koepf, W.; Henley, E.M. (Department of Physics, FM-15, University of Washington, Seattle, Washington 98195 (United States))

    1994-04-01T23:59:59.000Z

    In this work, we investigate the question whether the conventional analysis of the electromagnetic form factors of the nucleon, evaluated in the framework of the cloudy bag model (CBM) or other chirally invariant hybrid quark models utilizing the same philosophy, is gauge invariant In order to address that point, we first formulate the CBM in a style that resembles the technique of loop integrals. Evaluating the self-energy and the electromagnetic form factors of the nucleon in that manner, and comparing with the standard analysis where nonrelativistic perturbation theory is used, allows us to show that our approach is appropriate and to point out what approximations are made in the standard derivation of the model. From the form of those loop integrals, we then show that additional diagrams are needed to preserve electromagnetic gauge invariance and we assess the corresponding corrections.

  20. Evaluation of DART 3D model in the thermal domain using satellite/airborne imagery and ground-based measurements

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Evaluation of DART 3D model in the thermal domain using satellite/airborne imagery and ground ISSN0143-1161print/ISSN1366-5901, DOI:10.1080/01431161.2010.524672 jean to energy fluxes at the earth's surface. Its physical magnitude is defined as the effective kinetic

  1. A comparison of cloud top heights computed from airborne lidar and MAS radiance data using CO2 slicing

    E-Print Network [OSTI]

    Sheridan, Jennifer

    A comparison of cloud top heights computed from airborne lidar and MAS radiance data using CO2 in assessing the accuracy of the CO2-slicing cloud height algorithm. Infrared measurements of upwelling which included various single- layer and multilayer cloud conditions. Overall, the CO2-slicing method

  2. Estimating forest structural characteristics with airborne lidar scanning and a near-real time profiling laser systems

    E-Print Network [OSTI]

    Zhao, Kaiguang

    2009-05-15T23:59:59.000Z

    for realtime remote sensing platforms, e.g., to provide timely information for urgent applications. This study aims to develop an airborne profiling LiDAR system, featured with on-the-fly data processing, for near real- or real- time forest inventory...

  3. Use of land surface remotely sensed satellite and airborne data for environmental exposure assessment in cancer research

    E-Print Network [OSTI]

    cancer and environmental contaminants, focusing primarily on agricultural chemical exposure assessmentUse of land surface remotely sensed satellite and airborne data for environmental exposure assessment in cancer research SUSAN K. MAXWELLa , JAYMIE R. MELIKERb AND PIERRE GOOVAERTSc a U.S. Geological

  4. EVALUATION OF AIRBORNE AND SATELLITE ELECTRO-OPTICAL SENSORS PERFORMANCES BY USE OF HIGH-ALTITUDE CLOUDS OCCURRENCE

    E-Print Network [OSTI]

    EVALUATION OF AIRBORNE AND SATELLITE ELECTRO-OPTICAL SENSORS PERFORMANCES BY USE OF HIGH The impact of high-altitude clouds along an electro- optical sensor line of sight has been studied, F-91761 Palaiseau, France, email : karine.caillault@onera.fr KEYWORDS: sensor performance

  5. Ambient Airborne Solids Concentrations Including Volcanic Ash at Hanford, Washington Sampling Sites Subsequent to the Mount St. Helens Eruption

    SciTech Connect (OSTI)

    Sehmel, G.A.

    1982-12-20T23:59:59.000Z

    A major eruption of Mount St. Helens occurred on May 18, 1980. Subsequently, airborne solid concentrations were measured as a function of time at two sites within the southern edge of the fallout plume about 211 km east of Mount St. Helens. This ash was a source for investigating area-wide resuspension. Rain had a variable effect on decreasing airborne concentrations from resuspension. From 0.5 to 1.5 cm of rain were required to significantly reduce airborne solid concentrations through July. For a more aged resuspension source in September, a rain of 2.0 cm had a negligible effect. A monthly average threshold-wind speed for resuspension was defined as 3.6 m/s. For monthly-average wind speeds less than the threshold wind speed, monthly-average airborne concentrations tended to decrease with time. A decrease was recorded between September and October. For this 4-month time period, the half-life was on the order of 50 days, corresponding to a weathering rate of 5.1 year/sup -1/.

  6. Long-term determination of airborne radon progeny concentrations using LR 115 solid-state nuclear track detectors

    E-Print Network [OSTI]

    Yu, K.N.

    Long-term determination of airborne radon progeny concentrations using LR 115 solid-state nuclear. Introduction The radon-related absorbed dose in the lung is mainly due to short-lived radon progeny, i.e., 218-term measurements of the concentrations of radon progeny or the equilibrium factor F, among other information

  7. EMAG2: A 2arc min resolution Earth Magnetic Anomaly Grid compiled from satellite, airborne, and marine magnetic

    E-Print Network [OSTI]

    Müller, Dietmar

    grid for the World Digital Magnetic Anomaly Map. The resolution has been improved from 3 arc min to 2EMAG2: A 2­arc min resolution Earth Magnetic Anomaly Grid compiled from satellite, airborne, I-19020 Fezzano, Italy [1] A global Earth Magnetic Anomaly Grid (EMAG2) has been compiled from

  8. Mining Weak Lensing Surveys

    E-Print Network [OSTI]

    N. Padmanabhan; U. Seljak; U. L. Pen

    2002-10-21T23:59:59.000Z

    We present a survey of the cosmological applications of the next generation of weak lensing surveys, paying special attention to the computational challenges presented by the number of galaxies, $N_{gal} ~$ 10$^{5}$. We focus on optimal methods with no pixelization and derive a multigrid $P^3M$ algorithm that performs the relevant computations in $O(N_{gal} \\log N_{gal})$ time. We test the algorithm by studying three applications of weak lensing surveys - convergence map reconstruction, cluster detection and $E$ and $B$ power spectrum estimation using realistic 1 deg^{2} simulations derived from N-body simulations. The map reconstruction is able to reconstruct large scale features without artifacts. Detecting clusters using only weak lensing is difficult because of line of sight contamination and noise, with low completeness if one desires low contamination of the sample. A power spectrum analysis of the convergence field is more promising and we are able to reconstruct the convergence spectrum with no loss of information down to the smallest scales. The numerical methods used here can be applied to other data sets with same $O(N\\log N)$ scaling and can be generalised to a sphere.

  9. Condition assessment of GFRP-retrofitted concrete cylinders using electromagnetic waves

    E-Print Network [OSTI]

    Yu, Tzu-Yang (Tzu-Yang Young), 1973-

    2008-01-01T23:59:59.000Z

    The objective of this study is to develop an integrated nondestructive testing (NDT) capability, termed FAR NDT (Far-field Airborne Radar NDT), for the detection of defects, damages, and rebars in the near-surface region ...

  10. Beam dynamics studies for transverse electromagnetic mode type rf deflectors

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

    Ahmed, Shahid; Krafft, Geoffrey A.; Deitrick, Kirsten; De Silva, Subashini U.; Delayen, Jean R.; Spata, Mike; Tiefenback, Michael; Hofler, Alicia; Beard, Kevin

    2012-02-01T23:59:59.000Z

    We have performed three-dimensional simulations of beam dynamics for transverse electromagnetic mode (TEM) type rf deflectors: normal and superconducting. The compact size of these cavities as compared to the conventional TM110 type structures is more attractive particularly at low frequency. Highly concentrated electromagnetic fields between the parallel bars provide strong electrical stability to the beam for any mechanical disturbance. An array of six 2-cell normal conducting cavities or a single cell superconducting structure is enough to produce the required vertical displacement at the target point. Both the normal and superconducting structures show very small emittance dilution due to the vertical kick of the beam.

  11. Statistics of the electromagnetic response of a chaotic reverberation chamber

    E-Print Network [OSTI]

    J. -B. Gros; U. Kuhl; O. Legrand; F. Mortessagne; O. Picon; E. Richalot

    2014-09-20T23:59:59.000Z

    This article presents a study of the electromagnetic response of a chaotic reverberation chamber (RC) in the presence of losses. By means of simulations and of experiments, the fluctuations in the maxima of the field obtained in a conventional mode-stirred RC are compared with those in a chaotic RC in the neighborhood of the Lowest Useable Frequency (LUF). The present work illustrates that the universal spectral and spatial statistical properties of chaotic RCs allow to meet more adequately the criteria required by the Standard IEC 61000-4-21 to perform tests of electromagnetic compatibility.

  12. The NA62 Liquid Krypton Electromagnetic Calorimeter Level 0 Trigger

    E-Print Network [OSTI]

    V. Bonaiuto; A. Fucci; G. Paoluzzi; A. Salamon; G. Salina; E. Santovetti; F. Sargeni; F. M. Scarfi'

    2012-01-16T23:59:59.000Z

    The NA62 experiment at CERN SPS aims to measure the Branching Ratio of the very rare kaon decay K+ -> pi+ nu nubar collecting O(100) events with a 10% background to make a stringent test of the Standard Model. One of the main backgrounds to the proposed measurement is represented by the K+ -> pi+ pi0 decay. To suppress this background an efficient photo veto system is foreseen. In the 1-10 mrad angular region the NA48 high performance liquid krypton electromagnetic calorimeter is used. The design, implementation and current status of the Liquid Krypton Electromagnetic Calorimeter Level 0 Trigger are presented.

  13. The NA62 Liquid Krypton Electromagnetic Calorimeter Level 0 Trigger

    E-Print Network [OSTI]

    Vincenzo Bonaiuto; Adolfo Fucci; Giovanni Paoluzzi; Andrea Salamon; Gaetano Salina; Emanuele Santovetti; Fausto Sargeni; Francesco M. Scarfi'

    2012-01-18T23:59:59.000Z

    The NA62 experiment at CERN SPS aims to measure the Branching Ratio of the very rare kaon decay K+ -> pi+ nu nubar collecting O(100) events with a 10% background to make a stringent test of the Standard Model. One of the main backgrounds to the proposed measurement is represented by the K+ -> pi+ pi0 decay. To suppress this background an efficient photo veto system is foreseen. In the 1-10 mrad angular region the NA48 high performance liquid krypton electromagnetic calorimeter is used. The design, implementation and current status of the Liquid Krypton Electromagnetic Calorimeter Level 0 Trigger are presented.

  14. Evaluation of methodologies for estimating vulnerability to electromagnetic pulse effects

    SciTech Connect (OSTI)

    Not Available

    1984-01-01T23:59:59.000Z

    High-altitude electromagnetic pulse (EMP) is an electromagnetic radiation of very short rise time, large amplitude, and brief duration that follows a nuclear explosion above the atmosphere. The area over which a single EMP event is experienced can be very great if the explosion if high enough and large enough. Several such nuclear explosions might render unprotected electronic equipment and systems inoperative over an area as large as the continental United States. Damage may occur when high currents and voltages, driven by EMP, reach vital internal circuits. It is therefore essential to protect the systems and to form some idea of how well they will withstand EMP.

  15. Graded pitch electromagnetic pump for thin strip metal casting systems

    DOE Patents [OSTI]

    Kuznetsov, S.B.

    1986-04-01T23:59:59.000Z

    A metal strip casing system is provided with an electromagnetic pump which includes a pair of primary blocks having a graded pole pitch, polyphase ac winding and being arranged on opposite sides of a movable heat sink. A nozzle is provided for depositing liquid metal on the heat sink such that the resulting metal strip and heat sink combination is subjected to a longitudinal electromagnetic field which increases in wavelength in the direction of travel of the heat sink, thereby subjecting the metal and heat sink to a longitudinal force having a magnitude which increases in the direction of travel. 4 figs.

  16. Graded pitch electromagnetic pump for thin strip metal casting systems

    DOE Patents [OSTI]

    Kuznetsov, Stephen B. (Pittsburgh, PA)

    1986-01-01T23:59:59.000Z

    A metal strip casing system is provided with an electromagnetic pump which includes a pair of primary blocks having a graded pole pitch, polyphase ac winding and being arranged on opposite sides of a movable heat sink. A nozzle is provided for depositing liquid metal on the heat sink such that the resulting metal strip and heat sink combination is subjected to a longitudinal electromagnetic field which increases in wavelength in the direction of travel of the heat sink, thereby subjecting the metal and heat sink to a longitudinal force having a magnitude which increases in the direction of travel.

  17. Spectrally isomorphic Dirac systems: graphene in electromagnetic field

    E-Print Network [OSTI]

    Vit Jakubsky

    2014-12-02T23:59:59.000Z

    We construct the new one-dimensional Dirac Hamiltonians that are spectrally isomorphic (not isospectral) with the known exactly solvable models. Explicit formulas for their spectra and eigenstates are provided. The operators are utilized for description of Dirac fermions in graphene in presence of an inhomogeneous electromagnetic field. We discuss explicit, physically relevant, examples of spectrally isomorphic systems with both non-periodic and periodic electromagnetic barriers. In the latter case, spectrally isomorphic two- and three-gap systems associated with the Ablowitz-Kaup-Newell-Segur hierarchy are considered.

  18. SCHOOL OF ENGINEERING TECHNOLOGY Surveying Engineering

    E-Print Network [OSTI]

    Thomas, Andrew

    SCHOOL OF ENGINEERING TECHNOLOGY Surveying Engineering Technology practice FOCUSED WHY SURVEYING ENGINEERING TECHNOLOGY? Surveying engineering technology is a practice- focused program that provides students ENGINEERING TECHNOLOGY DEGREE? A graduate with a surveying engineering technology degree can work as a party

  19. Cryogenic heat pipe for cooling high temperature superconductors with application to Electromagnetic Formation Flight Satellites

    E-Print Network [OSTI]

    Kwon, Daniel W., 1980-

    2009-01-01T23:59:59.000Z

    An emerging method of propellant-less formation flight propulsion is the use of electromagnets coupled with reaction wheels. This technique is called Electromagnetic Formation Flight (EMFF). In order to create a large ...

  20. Rayleigh-Taylor-Induced electromagnetic fields in laser-produced plasmas

    E-Print Network [OSTI]

    Manuel, Mario John-Errol

    2013-01-01T23:59:59.000Z

    Spontaneous electromagnetic fields can be important to the dynamic evolution of a plasma by directing heat flow as well as providing additional pressures on the conducting fluids through the Lorentz force. Electromagnetic ...

  1. Electromagnetic signatures of far-field gravitational radiation in the 1+3 approach

    E-Print Network [OSTI]

    Alvin J. K. Chua; Priscilla Cañizares; Jonathan R. Gair

    2014-12-06T23:59:59.000Z

    Gravitational waves from astrophysical sources can interact with background electromagnetic fields, giving rise to distinctive and potentially detectable electromagnetic signatures. In this paper, we study such interactions for far-field gravitational radiation using the 1+3 approach to relativity. Linearised equations for the electromagnetic field on perturbed Minkowski space are derived and solved analytically. The inverse Gertsenshtein conversion of gravitational waves in a static electromagnetic field is rederived, and the resultant electromagnetic radiation is shown to be significant for highly magnetised pulsars in compact binary systems. We also obtain a variety of nonlinear interference effects for interacting gravitational and electromagnetic waves, although wave-wave resonances previously described in the literature are absent when the electric-magnetic self-interaction is taken into account. The fluctuation and amplification of electromagnetic energy flux as the gravitational wave strength increases towards the gravitational-electromagnetic frequency ratio is a possible signature of gravitational radiation from extended astrophysical sources.

  2. Recoil polarization measurements of the proton electromagnetic form factor ratio to high momentum transfer

    E-Print Network [OSTI]

    Puckett, Andrew James Ruehe

    2010-01-01T23:59:59.000Z

    The electromagnetic form factors of the nucleon characterize the effect of its internal structure on its response to an electromagnetic probe as studied in elastic electronnucleon scattering. These form factors are functions ...

  3. Airborne Multisensor Pod System, Arms control and nonproliferation technologies: Second quarter 1995

    SciTech Connect (OSTI)

    Alonzo, G.M.; Sanford, N.M. [eds.] [eds.

    1995-01-01T23:59:59.000Z

    This issue focuses on the Airborne Multisensor Pod System (AMPS) which is a collaboration of many of the DOE national laboratories to provide a scientific environment to research multiple sensors and the new information that can be derived from them. The bulk of the research has been directed at nonproliferation applications, but it has also proven useful in environmental monitoring and assessment, and land/water management. The contents of this issue are: using AMPS technology to detect proliferation and monitor resources; combining multisensor data to monitor facilities and natural resources; planning a AMPS mission; SAR pod produces images day or night, rain or shine; MSI pod combines data from multiple sensors; ESI pod will analyze emissions and effluents; and accessing AMPS information on the Internet.

  4. Quality Assurance Project Plan for radioactive airborne emissions data compilation and reporting

    SciTech Connect (OSTI)

    Burris, S.A.; Thomas, S.P.

    1994-02-01T23:59:59.000Z

    This Quality Assurance Project Plan addresses the quality assurance requirements for compiling data from radioactie aiborne emissions. These data will be reported to the US Environmental Protection Agency, the US Department of Energy, and the Washington State Department of Health. Hanford Site radioactive airborne emissions are reported to the US Environmental Protection Agency in compliance with Title 40, Protection of the Environment, Code of Federal Regulations, Part 61, ``National Emissions Standards for Hazardous Air Pollutants , ``Subpart H, ``National Emissions Standards for Emissions of Radionuclides Other Than Radon From Department of Energy Facilities`` (EPA 1989a). Reporting to US Department of Energy is performed in compliance with requirements of US Department of Energy Order 5400.1, General Environmental Protection Program (DOE 1988a).

  5. An overview of airborne radioactive emissions at Los Alamos National Laboratory

    SciTech Connect (OSTI)

    Guevara, F.A.; Dvorak, R.F.

    1987-01-01T23:59:59.000Z

    Strict control is essential over any emissions of radioactivity in the ventilation exhaust from facilities where radioactive materials may become airborne. At Los Alamos National Laboratory there are 87 stacks exhausting ventilation air to the environment from operations with a potential for radioactive emissions. These stacks cover the diverse operations at all Laboratory facilities where radioactive materials are handled and require continuous sampling/monitoring to detect levels of contamination. An overview is presented of the operations, associated ventilation exhaust cleanup systems, and analysis of the emissions. In keeping with the as-low-as-reasonably-achievable concept, emissions of radionuclides are reduced whenever practicable. A specific example describing the reduction of emissions from the linear accelerator beam stop area at the Los Alamos Meson Physics Facility during 1985 by a factor of 8 over previous emissions is presented.

  6. College of Engineering Electromagnetically Enhanced Hydrocyclone for Magnetite Separation during

    E-Print Network [OSTI]

    Demirel, Melik C.

    during Overview Magnetite is used by Consol Energy to separate coal from waste rock by increasing the magnetic field patterns · An impeller was installed to continuously mix the slurry to keep the mixture Electromagnetically Enhanced Hydrocyclone for Magnetite Separation during Coal Beneficiation Magnetite is used

  7. Electromagnetic radiation and motion of arbitrarily shaped particle

    E-Print Network [OSTI]

    Jozef Klacka

    2001-07-06T23:59:59.000Z

    Covariant form of equation of motion for arbitrarily shaped particle in the electromagnetic radiation field is presented. Equation of motion in the proper frame of the particle uses the radiation pressure cross section 3 $\\times$ 3 matrix. The obtained equation of motion is compared with known result.

  8. Behavior of Electric Current Subjected to ELF Electromagnetic Radiation

    E-Print Network [OSTI]

    Fran De Aquino

    2002-10-05T23:59:59.000Z

    Gravitational effects produced by ELF electromagnetic radiation upon the electric current in a conductor are studied. An apparatus has been constructed to test the behavior of current subjected to ELF radiation. The experimental results are in agreement with theoretical predictions and show that ELF radiation can cause transitory interruptions in electric current conduction.

  9. ECE 341: Electromagnetic Fields I EM devices and systems

    E-Print Network [OSTI]

    Schumacher, Russ

    - Power systems - Electromagnetic compatibility - Modeling of transmission lines - Communications model electric and magnetic properties of material media in relation with field equations - Understands and appreciates EM field theory as a foundation of circuit theory and electrical engineering as a whole Maxwell

  10. Propagation Analysis of Electromagnetic Waves: Application to Auroral Kilometric Radiation

    E-Print Network [OSTI]

    Santolik, Ondrej

    12 Propagation Analysis of Electromagnetic Waves: Application to Auroral Kilometric Radiation, containing waves which simultaneously propagate in different directions and/or wave modes the concept emission is found to propagate predominantly in the R-X mode with wave energy distributed in relatively

  11. Electromagnetic Waves Propagation in 3D Plasma Configurations

    E-Print Network [OSTI]

    Electromagnetic Waves Propagation in 3D Plasma Configurations Pavel Popovich, W. Anthony Cooper in a plasma strongly depends on the frequency, therefore the tools used for wave propagation studies are very that will allow for the calculation of the fields and energy deposition of a low-frequency wave propagating

  12. Hanbury BrownTwiss effect with partially coherent electromagnetic beams

    E-Print Network [OSTI]

    Visser, Taco D.

    Hanbury Brown­Twiss effect with partially coherent electromagnetic beams Gaofeng Wu1,2 and Taco D fluctuations (the Hanbury Brown­Twiss effect) at two points in the same cross section of a random electro; (260.5430) Polarization. http://dx.doi.org/10.1364/OL.39.002561 Ever since Hanbury Brown­Twiss (HBT

  13. Optical geometry analysis of the electromagnetic self-force

    E-Print Network [OSTI]

    Sebastiano Sonego; Marek A. Abramowicz

    2006-02-17T23:59:59.000Z

    We present an analysis of the behaviour of the electromagnetic self-force for charged particles in a conformally static spacetime, interpreting the results with the help of optical geometry. Some conditions for the vanishing of the local terms in the self-force are derived and discussed.

  14. Electromagnetic source localization with finite set of frequency measurements

    E-Print Network [OSTI]

    Abdul Wahab; Amer Rasheed; Rab Nawaz; Saman Anjum

    2014-09-16T23:59:59.000Z

    A phase conjugation algorithm for localizing an extended radiating electromagnetic source from boundary measurements of the electric field is presented. Measurements are taken over a finite number of frequencies. The artifacts related to the finite frequency data are tackled with $l_1-$regularization blended with the fast iterative shrinkage-thresholding algorithm with backtracking of Beck & Teboulle.

  15. Electromagnetically and Thermally Driven Flow Phenomena in Electroslag Welding

    E-Print Network [OSTI]

    Eagar, Thomas W.

    ) Electromagnetically and Thermally Driven Flow Phenomena in Electroslag Welding A. H. DILAWARI, J for the Electroslag Welding Process. In the formulation, allowance has been made {or both etee- tromagnetic and b in the use of electroslag welding (ESW), particularly for the construction of thick walled pressure vessels

  16. Electromagnetic pump stator frame having power crossover struts

    DOE Patents [OSTI]

    Fanning, Alan W. (San Jose, CA); Olich, Eugene E. (Aptos, CA)

    1995-01-01T23:59:59.000Z

    A stator frame for an electromagnetic pump includes a casing joined to a hub by a plurality of circumferentially spaced apart struts. At least one electrically insulated power crossover lead extends through the hub, through a crossover one of the struts, and through the casing for carrying electrical current therethrough.

  17. Examination of Contemporary Electromagnetic Software Capable of Modeling Problems of

    E-Print Network [OSTI]

    Yakovlev, Vadim

    Heating Vadim V. Yakovlev Department of Mathematical Sciences, Worcester Polytechnic Institute, Worcester the database of the modern electromagnetic (EM) software suitable for the modeling of microwave heating. Software Database The database of the EM software available in the market and applicable to the majority

  18. Practical Electromagnetic Template Attack on Pierre-Alain Fouque1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Practical Electromagnetic Template Attack on HMAC Pierre-Alain Fouque1 , Gaëtan Leurent1 , Denis efficient side channel attack against HMAC. Our attack assumes the presence of a side channel that reveals and can configure it, the attack recovers the secret key by monitoring a single execution of HMAC- SHA-1

  19. Design and sizing of electromagnetic linear actuators for valve applications

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Page 1/9 Design and sizing of electromagnetic linear actuators for valve applications J.C Vannier1. These structures have been studied in order to drive the valves of a car motor. According to general specifications magnet, valves. 1. Introduction, general specifications The valves which can be found in thermal engines

  20. Measurement of Electromagnetic Parameters and FDTD Modeling of Ferrite Cores

    E-Print Network [OSTI]

    Koledintseva, Marina Y.

    Measurement of Electromagnetic Parameters and FDTD Modeling of Ferrite Cores Jianfeng Xu #1 products based on magneto-dielectric (ferrite) materials with desirable frequency responses that satisfy simulation tool that could deal with frequency- dispersive materials. An example of a ferrite material

  1. Interactions of hadrons in the CALICE silicon tungsten electromagnetic calorimeter

    E-Print Network [OSTI]

    Roman Pöschl; for the CALICE Collaboration

    2012-03-07T23:59:59.000Z

    The CALICE collaboration develops prototypes for highly granular calorimeters for detectors at a future linear electron positron collider. The highly granular electromagnetic calorimeter prototype was tested in particle beams. We present the study of the interactions of hadrons in this prototype.

  2. Spacetime algebra as a powerful tool for electromagnetism

    E-Print Network [OSTI]

    Justin Dressel; Konstantin Y. Bliokh; Franco Nori

    2014-12-03T23:59:59.000Z

    We present a comprehensive introduction to spacetime algebra that emphasizes its practicality and power as a tool for the study of electromagnetism. We carefully develop this natural (Clifford) algebra of the Minkowski spacetime geometry, with a particular focus on its intrinsic (and often overlooked) complex structure. Notably, the scalar imaginary that appears throughout the electromagnetic theory properly corresponds to the unit 4-volume of spacetime itself, and thus has physical meaning. The electric and magnetic fields are combined into a single complex and frame-independent bivector field, which generalizes the Riemann-Silberstein complex vector that has recently resurfaced in studies of the single photon wavefunction. The complex structure of spacetime also underpins the emergence of electromagnetic waves, circular polarizations, the normal variables for canonical quantization, the distinction between electric and magnetic charge, complex spinor representations of Lorentz transformations, and the dual (electric-magnetic field exchange) symmetry that produces helicity conservation in vacuum fields. This latter symmetry manifests as an arbitrary global phase of the complex field, motivating the use of a complex vector potential, along with an associated transverse and gauge-invariant bivector potential, as well as complex (bivector and scalar) Hertz potentials. Our detailed treatment aims to encourage the use of spacetime algebra as a readily available and mature extension to existing vector calculus and tensor methods that can greatly simplify the analysis of fundamentally relativistic objects like the electromagnetic field.

  3. Soft Tempest: Hidden Data Transmission Using Electromagnetic Emanations

    E-Print Network [OSTI]

    Kuhn, Markus

    Soft Tempest: Hidden Data Transmission Using Electromagnetic Emanations Markus G. Kuhn and Ross J, a trusted screen driver can display sensitive information using fonts which minimise the energy the data being processed. Known as compromising emanations or Tempest radiation, a code word for a U.S. gov

  4. Classification of Electromagnetic and Gravitational Hopfions by Algebraic Type

    E-Print Network [OSTI]

    Amy Thompson; Alexander Wickes; Joe Swearngin; Dirk Bouwmeester

    2015-05-02T23:59:59.000Z

    We extend the definition of hopfions to include a class of spin-$h$ fields and use this to introduce the electromagnetic and gravitational hopfions of different algebraic types. The fields are constructed through the Penrose contour integral transform, thus the singularities of the generating functions are directly related to the geometry of the resulting physical fields. We discuss this relationship and how the topological structure of the fields is related to the Robinson congruence. Since the topology appears in the lines of force for both electromagnetism and gravity, the gravito-electromagnetic formalism is used to analyze the gravitational hopfions and describe the time evolution of their tendex and vortex lines. The correspondence between fields of different spin results in analogous configurations based on the same topological structure. The null and type N fields propagate at the speed of light, while the non-null and type D fields radiate energy outward from the center. Finally we discuss the type III gravitational hopfion, which has no direct electromagnetic analog, but find that it still exhibits some of the characteristic features common to the other hopfion fields.

  5. Remote Sensing Ayman F. Habib Electro-Magnetic Radiation

    E-Print Network [OSTI]

    Habib, Ayman

    Remote Sensing Ayman F. Habib 1 Chapter 2 Electro-Magnetic Radiation #12;Remote Sensing Ayman F. Habib 2 Elements of Remote Sensing #12;Remote Sensing Ayman F. Habib 3 Chapter 2 Radiation: nature & source #12;Remote Sensing Ayman F. Habib 4 Chapter 2 Interaction with the atmosphere #12;Remote Sensing

  6. Remote Sensing Ayman F. Habib Electro-Magnetic Radiation

    E-Print Network [OSTI]

    Habib, Ayman

    Remote Sensing Ayman F. Habib 1 Chapter 2 Electro-Magnetic Radiation Remote Sensing Ayman F. Habib 2 Elements of Remote Sensing #12;Remote Sensing Ayman F. Habib 3 Chapter 2 Radiation: nature & source Remote Sensing Ayman F. Habib 4 Chapter 2 Interaction with the atmosphere #12;Remote Sensing Ayman

  7. "Light" or the Electromagnetic spectrum www.nasa.gov

    E-Print Network [OSTI]

    Mojzsis, Stephen J.

    #12;"Light" or the Electromagnetic spectrum www.nasa.gov #12;Diffraction and Light · When passed through a prism or grating, light is separated into its component wavelengths · This looks like a rainbow in visible light · There are wavelengths we can't see with our eyes · White light contains all visible colors

  8. Space-Time Galerkin Projection of Electro-Magnetic Fields

    E-Print Network [OSTI]

    Wang, Zifu; Hofmann, Heath

    2015-01-01T23:59:59.000Z

    Spatial Galerkin projection transfers fields between different meshes. In the area of finite element analysis of electromagnetic fields, it provides great convenience for remeshing, multi-physics, domain decomposition methods, etc. In this paper, a space-time Galerkin projection is developed in order to transfer fields between different spatial and temporal discretization bases.

  9. Improved Magnetic Fusion Energy Economics Via Massive Resistive Electromagnets

    E-Print Network [OSTI]

    for cryogenic refrigeration plants needed to maintain the magnets' temperature near absolute zero, direct costsImproved Magnetic Fusion Energy Economics Via Massive Resistive Electromagnets Robert D. Woolley for magnetic fusion reactors and instead using resistive magnet designs based on cheap copper or aluminum

  10. Evolution of linearly polarized electromagnetic pulses in laser plasmas

    SciTech Connect (OSTI)

    Borhanian, J. [Department of Atomic and Molecular Physics, Faculty of Physics, University of Tabriz 51664 (Iran, Islamic Republic of); Centre for Plasma Physics, Department of Physics and Astronomy, Queen's University Belfast, BT7 1NN, Northern Ireland (United Kingdom); Sobhanian, S. [Department of Atomic and Molecular Physics, Faculty of Physics, University of Tabriz 51664 (Iran, Islamic Republic of); Kourakis, I. [Centre for Plasma Physics, Department of Physics and Astronomy, Queen's University Belfast, BT7 1NN, Northern Ireland (United Kingdom); Esfandyari-Kalejahi, A. [Department of Physics, Faculty of Science, Azarbaijan University of Tarbiat Moallem, Tabriz 51745-406 (Iran, Islamic Republic of)

    2008-09-15T23:59:59.000Z

    An analytical and numerical investigation is presented of the behavior of a linearly polarized electromagnetic pulse as it propagates through a plasma. Considering a weakly relativistic regime, the system of one-dimensional fluid-Maxwell equations is reduced to a generalized nonlinear Schroedinger type equation, which is solved numerically using a split step Fourier method. The spatio-temporal evolution of an electromagnetic pulse is investigated. The evolution of the envelope amplitude of density harmonics is also studied. An electromagnetic pulse propagating through the plasma tends to broaden due to dispersion, while the nonlinear frequency shift is observed to slow down the pulse at a speed lower than the group velocity. Such nonlinear effects are more important for higher density plasmas. The pulse broadening factor is calculated numerically, and is shown to be related to the background plasma density. In particular, the broadening effect appears to be stronger for dense plasmas. The relation to existing results on electromagnetic pulses in laser plasmas is discussed.

  11. Active absorption of electromagnetic pulses in a cavity

    E-Print Network [OSTI]

    Horsley, S A R; Tyc, T; Philbin, T G

    2014-01-01T23:59:59.000Z

    We show that a pulse of electromagnetic radiation launched into a cavity can be completely absorbed into an infinitesimal region of space, provided one has a high degree of control over the current flowing through this region. We work out explicit examples of this effect in a cubic cavity and a cylindrical one, and experimentally demonstrate the effect in the microwave regime.

  12. Asymptotic description of pulsed ultrawideband electromagnetic beam field

    E-Print Network [OSTI]

    Oughstun, Kurt

    Asymptotic description of pulsed ultrawideband electromagnetic beam field propagation in dispersive of a pulsed ultrawideband electro- magnetic beam field as it propagates through a dispersive, attenuative evolution of the pulsed-beam field through a single-contour integral that is of the same form

  13. ELECTROMAGNETIC RADIATION FROM A STRONG DC ELECTRIC FIELD

    E-Print Network [OSTI]

    Guedel, Manuel

    ELECTROMAGNETIC RADIATION FROM A STRONG DC ELECTRIC FIELD Manuel G¨udel 1 and Donat G. Wentzel 2 1 accelerated by a strong dc electric field show not only very efficient generation of beam waves but also emission of o­mode radiation. We present a set of particle simulations for which we study the behavior

  14. Electromagnetically Induced Guiding of Counter-Propagating Lasers in Plasmas

    E-Print Network [OSTI]

    - propagating laser pulses and (ii) guiding of an ultra-short tightly focused laser pulse by a counterElectromagnetically Induced Guiding of Counter-Propagating Lasers in Plasmas G. Shvets Princeton for Quantenoptik, D-85748 Garching, Germany Abstract The interaction of counter-propagating laser pulses

  15. 1D subsurface electromagnetic fields excited by energized steel casing

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    1D subsurface electromagnetic fields excited by energized steel casing Wei Yang1 , Carlos Torres the possibility of enabling steel-cased wells as galvanic sources to detect and quantify spatial variations of electrical conductivity in the subsurface. The study assumes a vertical steel-cased well that penetrates

  16. Construction, assembly and tests of the ATLAS electromagnetic barrel calorimeter

    E-Print Network [OSTI]

    Aubert, B; Colas, Jacques; Delebecque, P; Di Ciaccio, L; El-Kacimi, M; Ghez, P; Girard, C; Gouanère, M; Goujdami, D; Jérémie, A; Jézéquel, S; Lafaye, R; Massol, N; Perrodo, P; Przysiezniak, H; Sauvage, G; Thion, J; Wingerter-Seez, I; Zitoun, R; Zolnierowski, Y; Alforque, R; Chen, H; Farrell, J; Gordon, H; Grandinetti, R; Hackenburg, R W; Hoffmann, A; Kierstead, J A; Köhler, J; Lanni, F; Lissauer, D; Ma, H; Makowiecki, D S; Müller, T; Norton, S; Radeka, V; Rahm, David Charles; Rehak, M; Rajagopalan, S; Rescia, S; Sexton, K; Sondericker, J; Stumer, I; Takai, H; Belymam, A; Benchekroun, D; Driouichi, C; Hoummada, A; Hakimi, M; Knee, Michael; Stroynowski, R; Wakeland, B; Datskov, V I; Drobin, V; Aleksa, Martin; Bremer, J; Carli, T; Chalifour, M; Chevalley, J L; Djama, F; Ema, L; Fabre, C; Fassnacht, P; Gianotti, F; Gonidec, A; Hansen, J B; Hervás, L; Hott, T; Lacaste, C; Marin, C P; Pailler, P; Pleskatch, A; Sauvagey, D; Vandoni, Giovanna; Vuillemin, V; Wilkens, H; Albrand, S; Belhorma, B; Collot, J; de Saintignon, P; Dzahini, D; Ferrari, A; Fulachier, J; Gallin-Martel, M L; Hostachy, J Y; Laborie, G; Ledroit-Guillon, F; Martin, P; Muraz, J F; Ohlsson-Malek, F; Saboumazrag, S; Viret, S; Othegraven, R; Zeitnitz, C; Banfi, D; Carminati, L; Cavalli, D; Citterio, M; Costa, G; Delmastro, M; Fanti, M; Mandelli, L; Mazzanti, M; Tartarelli, F; Augé, E; Baffioni, S; Bonis, J; Bonivento, W; Bourdarios, C; de La Taille, C; Fayard, L; Fournier, D; Guilhem, G; Imbert, P; Iconomidou-Fayard, L; Le Meur, G; Mencik, M; Noppe, J M; Parrour, G; Puzo, P; Rousseau, D; Schaffer, A C; Seguin-Moreau, N; Serin, L; Unal, G; Veillet, J J; Wicek, F; Zerwas, D; Astesan, F; Bertoli, W; Canton, B; Fleuret, F; Imbault, D; Lacour, D; Laforge, B; Schwemling, P; Abouelouafa, M; Ben-Mansour, A; Cherkaoui, R; El-Mouahhidi, Y; Ghazlane, H; Idrissi, A; Bazizi, K; England, D; Glebov, V; Haelen, T; Lobkowicz, F; Slattery, P F; Belorgey, J; Besson, N; Boonekamp, M; Durand, D; Ernwein, J; Mansoulié, B; Molinie, F; Meyer, J P; Perrin, P; Schwindling, J; Taguet, J P; Zaccone, Henri; Lund-Jensen, B; Rydström, S; Tayalati, Y; Botchev, B; Finocchiaro, G; Hoffman, J; McCarthy, R L; Rijssenbeek, M; Steffens, J; Zdrazil, M; Braun, H M

    2006-01-01T23:59:59.000Z

    The construction and assembly of the two half barrels of the ATLAS central electromagnetic calorimeter and their insertion into the barrel cryostat are described. The results of the qualification tests of the calorimeter before installation in the LHC ATLAS pit are given.

  17. Moving Weakly Relativistic Electromagnetic Solitons in Laser-Plasmas

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    .O. Box 224, 18001 Nis, Serbia and Montenegro 2 Vinca Institute of Nuclear Sciences, P.O.Box 522, 11001 Belgrade, Serbia and Montenegro Abstract. A case of moving one-dimensional electromagnetic (EM) solitons pulses, up to 40% of the laser energy can be trapped by relativistic solitons, creating a significant

  18. Southern Sky Redshift Survey

    SciTech Connect (OSTI)

    Da Costa, L.N.; Pellegrini, P.S.; Sargent, W.L.W.; Tonry, J.; Davis, M.

    1988-04-01T23:59:59.000Z

    The general characteristics of the space distribution of galaxies in the SSRS sample, covering the southern Galactic cap, are examined, and maps of the space distribution are presented. The sample consists of 2028 galaxies in an area of 1.75 sr with declination south of -17.5 deg and galactic latitude below -30 deg. The survey provides useful information on large-scale structure to a depth of 120/h Mpc. The galaxy distribution exhibits prominent filaments, sheets, and voids. Some large-scale structures are highly subclustered; others are much more diffuse. 21 references.

  19. Community Leaders Survey

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting theCommercialization and Innovation TheCommunicationsLeaders Survey Community

  20. Electromagnetism-like Mechanism with Force Decay Rate Great Deluge for the Course Timetabling Problem

    E-Print Network [OSTI]

    McCollum, Barry

    Electromagnetism-like Mechanism with Force Decay Rate Great Deluge for the Course Timetabling called Electromagnetism-like mechanism with force decay rate great deluge algorithm for university course on these benchmark problems. Keywords: Electromagnetism-like mechanism, force decay rate great deluge, course

  1. Radio Science, Volume ???, Number , Pages 110, Time Reversal of Electromagnetic Waves and

    E-Print Network [OSTI]

    Paris 7 - Denis Diderot, Université

    electromagnetic pulse at a central frequency of 2.45 GHz in a high-Q cavity. Another antenna records the stronglyRadio Science, Volume ???, Number , Pages 1­10, Time Reversal of Electromagnetic Waves demonstration of time-reversal focusing with electromagnetic waves in a SISO scheme. An antenna transmits a 1 µs

  2. Temporary Acceleration of Electrons While Inside an Intense Electromagnetic Pulse Kirk T. McDonald

    E-Print Network [OSTI]

    McDonald, Kirk

    Temporary Acceleration of Electrons While Inside an Intense Electromagnetic Pulse Kirk T. Mc. In­ tense electromagnetic pulses of astrophysical origin can lead to very energetic photons via potential'' associated with the envelope of the electromagnetic pulse [3]. The resulting temporary energy

  3. Progress in Electromagnetics Research, PIER 26, 89110, 2000 PULSE PROPAGATION IN SEA WATER

    E-Print Network [OSTI]

    Margetis, Dionisios

    Progress in Electromagnetics Research, PIER 26, 89­110, 2000 PULSE PROPAGATION IN SEA WATER of different layers inside the earth [3­5]. In more recent years, electromagnetic pulses are studied: What is the form of the electromagnetic pulse that travels downward into the sea at any practical

  4. A THz transverse electromagnetic mode two-dimensional interconnect layer incorporating quasi-optics

    E-Print Network [OSTI]

    of transmitting subpicosecond pulses in the transverse electromagnetic TEM mode over arbitrarily long paths near the cutoff fre- quency. Such pulse broadening does not occur for the trans- verse electromagneticA THz transverse electromagnetic mode two-dimensional interconnect layer incorporating quasi

  5. Ion acoustic wave generation by a standing electromagnetic field in a subcritical plasma

    E-Print Network [OSTI]

    Boyer, Edmond

    by the ponderomotive force [1] associated with a standing electromagnetic pulse. Be- cause of the nonlinear response of the plasma to the electromagnetic pulse, a zero frequency electron den- sity perturbation is created with a wave number twice the electromagnetic one. Then, after the pulse, the plasma relaxes towards

  6. Temporary Acceleration of Electrons While Inside an Intense Electromagnetic Pulse Kirk T. McDonald

    E-Print Network [OSTI]

    McDonald, Kirk

    Temporary Acceleration of Electrons While Inside an Intense Electromagnetic Pulse Kirk T. Mc. In- tense electromagnetic pulses of astrophysical origin can lead to very energetic photons via of the electromagnetic pulse [3]. The resulting temporary energy transfer to the longitudinal motion of the electron can

  7. Slow electromagnetic pulse propagation through a narrow transmission band in a coaxial photonic crystal

    E-Print Network [OSTI]

    Robertson, William

    Slow electromagnetic pulse propagation through a narrow transmission band in a coaxial photonic the slow group-velocity propagation of electromagnetic pulses through a narrow transmission band describe a simple experimental configuration that leads to slow-group-velocity electromagnetic pulse

  8. An improved model of the lightning electromagnetic field interaction with the D-region ionosphere

    E-Print Network [OSTI]

    14 March 2012. [1] We present an improved time-domain model of the lightning electromagnetic pulse. Introduction [2] Lightning discharges produce both an electromagnetic pulse (EMP), due to the rapid lightningAn improved model of the lightning electromagnetic field interaction with the D-region ionosphere R

  9. Electromagnetic dissociation of relativistic {sup 28}Si by nucleon emission

    SciTech Connect (OSTI)

    Sonnadara, U.J.

    1992-12-01T23:59:59.000Z

    A detailed study of the electromagnetic dissociation of {sup 28}Si by nucleon emission at E{sub lab}/A = 14.6 (GeV/nucleon was carried out with {sup 28}Si beams interacting on {sup 208}Pb). {sup 120}Sn. {sup 64}C targets. The measurements apparatus consists of detectors in the target area which measure the energy and charged multiplicity, and a forward spectrometer which measures the position, momentum and energy of the reaction fragments. The exclusive electromagnetic dissociation cross sections for decay channels having multiple nucleons in the final state have been measured which enables the selection of events produced in pure electromagnetic interactions. The measured cross sections agree well with previous measurements obtained for the removal of a few nucleons as well as with measurements on total charge removal cross sections from other experiments. The dependence of the integrated cross sections on the target charge Z{sub T} and the target mass AT confirms that for higher Z targets the excitation is largely electromagnetic. Direct measurements of the excitation energy for the electromagnetic dissociation of {sup 28}Si {yields} p+{sup 27}Al and {sup 28}Si {yields} n+{sup 27}Si have been obtained through a calculation of the invariant mass in kinematically, reconstructed events. The excitation energy spectrum for all targets peak near the isovector giant dipole resonance in {sup 28}Si. These distributions are well reproduced by combining the photon spectrum calculated using the Weizsaecker-Williams approximation with the experimental data on the photonuclear {sup 28}Si({sub {gamma},p}){sup 27}Al and {sup 28}Si({sub {gamma},n}){sup 27}Si. The possibilities of observing double giant dipole resonance excitations in {sup 28}Si have been investigated with cross section measurements as well as with excitation energy reconstruction.

  10. Electromagnetic dissociation of relativistic [sup 28]Si by nucleon emission

    SciTech Connect (OSTI)

    Sonnadara, U.J.

    1992-12-01T23:59:59.000Z

    A detailed study of the electromagnetic dissociation of [sup 28]Si by nucleon emission at E[sub lab]/A = 14.6 (GeV/nucleon was carried out with [sup 28]Si beams interacting on [sup 208]Pb). [sup 120]Sn. [sup 64]C targets. The measurements apparatus consists of detectors in the target area which measure the energy and charged multiplicity, and a forward spectrometer which measures the position, momentum and energy of the reaction fragments. The exclusive electromagnetic dissociation cross sections for decay channels having multiple nucleons in the final state have been measured which enables the selection of events produced in pure electromagnetic interactions. The measured cross sections agree well with previous measurements obtained for the removal of a few nucleons as well as with measurements on total charge removal cross sections from other experiments. The dependence of the integrated cross sections on the target charge Z[sub T] and the target mass AT confirms that for higher Z targets the excitation is largely electromagnetic. Direct measurements of the excitation energy for the electromagnetic dissociation of [sup 28]Si [yields] p+[sup 27]Al and [sup 28]Si [yields] n+[sup 27]Si have been obtained through a calculation of the invariant mass in kinematically, reconstructed events. The excitation energy spectrum for all targets peak near the isovector giant dipole resonance in [sup 28]Si. These distributions are well reproduced by combining the photon spectrum calculated using the Weizsaecker-Williams approximation with the experimental data on the photonuclear [sup 28]Si([sub [gamma],p])[sup 27]Al and [sup 28]Si([sub [gamma],n])[sup 27]Si. The possibilities of observing double giant dipole resonance excitations in [sup 28]Si have been investigated with cross section measurements as well as with excitation energy reconstruction.

  11. Airborne protected military satellite communications : analysis of open-loop pointing and closed-loop tracking with noisy platform attitude information

    E-Print Network [OSTI]

    Deike, William D

    2010-01-01T23:59:59.000Z

    U.S. military assets' increasing need for secure global communications has led to the design and fabrication of airborne satellite communication terminals that operate under protected security protocol. Protected transmission ...

  12. A new well surveying tool

    E-Print Network [OSTI]

    Haghighi, Manuchehr Mehdizabeh

    1966-01-01T23:59:59.000Z

    A NEW WELL SURVEYING TOOL A Thesis By MANUCHEHR MEHDIZABEH HAGHIGHI Submitted to the Graduate College of the Texas ANM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Major Subject: PETROLEUM... by Surveying Device for S and 19 , N and 41 . 21 3. Comparison of Measured Angles and Angles Indicated by Surveying Device for NE snd 9 , W and 45 . . . . . . . ~ 22 ABSTRNl T Ever since the advent of rotary drilling the petroleum industry has been...

  13. A comparative study of collection efficiencies using 0.80 and 1.2 micrometer pore size filters in evaluating airborne asbestos dust

    E-Print Network [OSTI]

    Holt, Grady Lynn

    1974-01-01T23:59:59.000Z

    A COMPARATIVE STUDY OF COLLECTION EFFICIENCIES USING O. RO AND 1. 2 MICROMETER PORE SIZE FILTERS IN EVALUATING AIRBORNE ASBESTOS DUST A Thesis by GRADY LYNN HOLT Submitted to the Graduate College of' Texas A&M University in partial... fulfillment of the requirement for the degree of MASTER OF SCIENCE August 1974. Major Subject: Industrial Hygiene A COMPARATIVE . TUDY OF COLLECTION EFFICIENCIES USING O. BO AND 1. 2 MICROMETER PORE SIZE FILTERS IN EVALUATING AIRBORNE ASBESTOS DUST A...

  14. A comparative study of collection efficiencies using 0.80 and 1.2 micrometer pore size filters in evaluating airborne asbestos dust 

    E-Print Network [OSTI]

    Holt, Grady Lynn

    1974-01-01T23:59:59.000Z

    A COMPARATIVE STUDY OF COLLECTION EFFICIENCIES USING O. RO AND 1. 2 MICROMETER PORE SIZE FILTERS IN EVALUATING AIRBORNE ASBESTOS DUST A Thesis by GRADY LYNN HOLT Submitted to the Graduate College of' Texas A&M University in partial... fulfillment of the requirement for the degree of MASTER OF SCIENCE August 1974. Major Subject: Industrial Hygiene A COMPARATIVE . TUDY OF COLLECTION EFFICIENCIES USING O. BO AND 1. 2 MICROMETER PORE SIZE FILTERS IN EVALUATING AIRBORNE ASBESTOS DUST A...

  15. Assessment of Unabated Facility Emission Potentials for Evaluating Airborne Radionuclide Monitoring Requirements at Pacific Northwest National Laboratory - 1999

    SciTech Connect (OSTI)

    DL Edwards; KD Shields; MJ Sula; MY Ballinger

    1999-09-28T23:59:59.000Z

    Assessments were performed to evaluate compliance with the airborne radionuclide emission monitoring requirements in the National Emission Standards for Hazardous Air Pollutants (NESHAP--US Code of Federal Regulations, Title 40 Part 61, Subpart H). In these assessments, potential unabated offsite doses were evaluated for emission locations at facilities owned by the US Department of Energy and operated by Pacific Northwest National Laboratory (Pacific Northwest) on the Hanford Site. Two of the facilities evaluated, 325 Building Radiochemical Processing Laboratory, and 331 Building Life Sciences Laboratory met state and federal criteria for continuous sampling of airborne radionuclide emissions. One other building, the 3720 Environmental Sciences Laboratory, was recognized as being in transition with the potential for meeting the continuous sampling criteria.

  16. Measurement of airborne fission products in Chapel Hill, NC, USA from the Fukushima Dai-ichi reactor accident

    E-Print Network [OSTI]

    S. MacMullin; G. K. Giovanetti; M. P. Green; R. Henning; R. Holmes; K. Vorren; J. F. Wilkerson

    2012-10-03T23:59:59.000Z

    We present measurements of airborne fission products in Chapel Hill, NC, USA, from 62 days following the March 11, 2011, accident at the Fukushima Dai-ichi nuclear power plant. Airborne particle samples were collected daily in air filters and radio-assayed with two high-purity germanium (HPGe) detectors. The fission products I-131 and Cs-137 were measured with maximum activities of 4.2 +/- 0.6 mBq/m^3 and 0.42 +/- 0.07 mBq/m^3 respectively. Additional activity from I-131, I-132, Cs-134, Cs-136, Cs-137 and Te-132 were measured in the same air filters using a low-background HPGe detector at the Kimballton Underground Research Facility (KURF).

  17. Magnetotelluric survey of San Juan sag

    SciTech Connect (OSTI)

    Furgerson, R.B. (Phoenix Geoscience Inc., Denver, CO (USA))

    1989-09-01T23:59:59.000Z

    The San Juan Mountains of southwestern Colorado, consisting almost entirely of Tertiary volcanic rocks, are bounded on the southwest by the mature oil and gas province of the San Juan basin and on the east by the San Luis basin, continuation of the sediments from the San Juan basin eastward beneath the volcanics was suspected based on the reported presence of seeps and the evaluation of regional gravity and magnetic data. The probability greatly increased when Milestone drilled Tertiary and Cretaceous sediments beneath 3,000 ft of volcanics, 37 mi northeast of the nearest Cretaceous outcrop. The MT (magnetotellurium) program described in this presentation is part of a nonexclusive survey that included magnetotelluric soundings, time-domain electromagnetic soundings, gravity stations, and geochemical sampling. MT data were acquired at 20 sites along an east-west profile centered on the Milestone 1 AMF well, five sites along a north-south cross profile, and three more sites around the wells northeast of the Milestone well. Site spacing was of the order of 1 to 3 mi except for the cross line. The program was designed to map the thickness of the surface volcanics and the thickness and resistivity of the underlying sediments. The MT data acquired near the Milestone well indicated that the Cretaceous sedimentary rocks are characterized by an average resistivity of the order of 4-12 ohm-meters. The MT data acquired in the San Luis basin east of Del Norte also shows 4-12 ohm-meter rocks in the subsurface, correlated in this case with Tertiary volcanics, volcaniclastics, and continental sediments. The MT data show that the low-resistivity 4-12 ohm-meter section extends continuously beneath the more resistive surface volcanics from the San Luis Valley to at least 16 mi west-northwest of Del Norte.

  18. Direct Characterization of Airborne Particles Associated with Arsenic-rich Mine Tailings: Particle Size Mineralogy and Texture

    SciTech Connect (OSTI)

    M Corriveau; H Jamieson; M Parsons; J Campbell; A Lanzirotti

    2011-12-31T23:59:59.000Z

    Windblown and vehicle-raised dust from unvegetated mine tailings can be a human health risk. Airborne particles from As-rich abandoned Au mine tailings from Nova Scotia, Canada have been characterized in terms of particle size, As concentration, As oxidation state, mineral species and texture. Samples were collected in seven aerodynamically fractionated size ranges (0.5-16 {micro}m) using a cascade impactor deployed at three tailings fields. All three sites are used for recreational activities and off-road vehicles were racing on the tailings at two mines during sample collection. Total concentrations of As in the <8 {micro}m fraction varied from 65 to 1040 ng/m{sup 3} of air as measured by proton-induced X-ray emission (PIXE) analysis. The same samples were analysed by synchrotron-based microfocused X-ray absorption near-edge spectroscopy ({micro}XANES) and X-ray diffraction ({micro}XRD) and found to contain multiple As-bearing mineral species, including Fe-As weathering products. The As species present in the dust were similar to those observed in the near-surface tailings. The action of vehicles on the tailings surface may disaggregate material cemented with Fe arsenate and contribute additional fine-grained As-rich particles to airborne dust. Results from this study can be used to help assess the potential human health risks associated with exposure to airborne particles from mine tailings.

  19. Multidimensional Pattern Matching: A Survey

    E-Print Network [OSTI]

    Amir, Amihood

    Multidimensional Pattern Matching: A Survey Amihood Amir \\Lambda GIT--CC--92/29 July 1992 Abstract for this survey is the problem of searching aerial photographs. The (ambitious) practical goal of this application is to input an aerial photograph and a template of some object (a pattern). The output is all locations

  20. Radio Remnants of Compact Binary Mergers - the Electromagnetic Signal that will follow the Gravitational Waves

    E-Print Network [OSTI]

    Ehud Nakar; Tsvi Piran

    2011-02-04T23:59:59.000Z

    The question "what is the observable electromagnetic (EM) signature of a compact binary merger?" is an intriguing one with crucial consequences to the quest for gravitational waves (GW). Compact binary mergers are prime sources of GW, targeted by current and next generation detectors. Numerical simulations have demonstrated that these mergers eject energetic sub-relativistic (or even relativistic) outflows. This is certainly the case if the mergers produce short GRBs, but even if not, significant outflows are expected. The interaction of such outflows with the surround matter inevitably leads to a long lasting radio signal. We calculate the expected signal from these outflows (our calculations are also applicable to short GRB orphan afterglows) and we discuss their detectability. We show that the optimal search for such signal should, conveniently, take place around 1.4 GHz. Realistic estimates of the outflow parameters yield signals of a few hundred $\\mu$Jy, lasting a few weeks, from sources at the detection horizon of advanced GW detectors. Followup radio observations, triggered by GW detection, could reveal the radio remnant even under unfavorable conditions. Upcoming all sky surveys can detect a few dozen, and possibly even thousands, merger remnants at any give time, thereby providing robust merger rate estimates even before the advanced GW detectors become operational. In fact, the radio transient RT 19870422 fits well the overall properties predicted by our model and we suggest that its most probable origin is a compact binary merger radio remnant.