Sample records for grated analy sis

  1. SIS

    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:Energy: Grid Integration Redefining What's PossibleRadiation Protection245C Unlimited Release PrintedDEVIATIONSReduce5,Science,SIMWyPES®SIS

  2. Alea 1, 181203 (2006) Genetic Genealogical Models in Rare Event Analy-

    E-Print Network [OSTI]

    Boyer, Edmond

    2006-01-01T23:59:59.000Z

    Alea 1, 181­203 (2006) Genetic Genealogical Models in Rare Event Analy- sis Fr´ed´eric C and a genealogical model for estimating a class of rare events arising in physics and network analysis. We represent particle systems, rare events, Feynman-Kac models, ge- netic algorithms, genealogical trees. Second version

  3. Invited Viewer Invited Viewer iSIS Portal Access

    E-Print Network [OSTI]

    Dennett, Daniel

    1 Invited Viewer Invited Viewer iSIS Portal Access Tufts "Invited Viewers" such as parents and spouses can be granted view-only access to a student's iSIS secure personal information. Students previously registered by another student or you do not have a Tufts Username and active iSIS access (most

  4. Future perspectives at SIS-100 with HADES-at-FAIR

    E-Print Network [OSTI]

    The HADES Collaboration; I. Froehlich; G. Agakishiev; A. Balanda; G. Bellia; D. Belver; A. Belyaev; A. Blanco; M. Boehmer; J. L. Boyard; P. Braun-Munzinger; P. Cabanelas; E. Castro; S. Chernenko; T. Christ; M. Destefanis; J. Diaz; F. Dohrmann; A. Dybczak; L. Fabbietti; O. Fateev; P. Finocchiaro; P. Fonte; J. Friese; T. Galatyuk; J. A. Garzon; R. Gernhaeuser; A. Gil; C. Gilardi; M. Golubeva; D. Gonzalez-Diaz; E. Grosse; F. Guber; M. Heilmann; T. Hennino; R. Holzmann; A. Ierusalimov; I. Iori; A. Ivashkin; M. Jurkovic; B. Kaempfer; K. Kanaki; T. Karavicheva; D. Kirschner; I. Koenig; W. Koenig; B. W. Kolb; R. Kotte; A. Kozuch; A. Krasa; F. Krizek; R. Kruecken; W. Kuehn; A. Kugler; A. Kurepin; J. Lamas-Valverde; S. Lang; J. S. Lange; K. Lapidus; T. Liu; L. Lopes; M. Lorenz; L. Maier; A. Mangiarotti; J. Marin; J. Markert; V. Metag; B. Michalska; J. Michel; D. Mishra; E. Moriniere; J. Mousa; C. Muentz; L. Naumann; R. Novotny; J. Otwinowski; Y. C. Pachmayer; M. Palka; Y. Parpottas; V. Pechenov; O. Pechenova; T. Perez Cavalcanti; J. Pietraszko; W. Przygoda; B. Ramstein; A. Reshetin; A. Rustamov; A. Sadovsky; P. Salabura; A. Schmah; R. Simon; Yu. G. Sobolev; S. Spataro; B. Spruck; H. Stroebele; J. Stroth; C. Sturm; M. Sudol; A. Tarantola; K. Teilab; P. Tlusty; M. Traxler; R. Trebacz; H. Tsertos; I. Veretenkin; V. Wagner; M. Weber; M. Wisniowski; J. Wuestenfeld; S. Yurevich; Y. Zanevsky; P. Zhou; P. Zumbruch

    2009-06-15T23:59:59.000Z

    Currently, the HADES spectrometer undergoes un upgrade program to be prepared for measurements at the upcoming SIS-100 synchrotron at FAIR. We describe the current status of the HADES di-electron measurements at the SIS-18 and our future plans for SIS-100.

  5. Jay Grate | EMSL

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

    Overview: Dr. Grate has a distinguished career in chemical microsensors and microfluidics integrating aspects of chemical, material and measurement sciences into new...

  6. Final Outcome for the Critical SIS Stochastic Epidemic

    E-Print Network [OSTI]

    Dolgoarshinnykh, Regina

    probabilities Px t Zt+h = x + 1 = xh + o(xh), Px t Zt+h = x - 1 = xh + o(xh). · The death rate x is the same, St + It N = population size. · It = state of the chain at time t; [N] = {0, 1, . . . , N} = state as for the SIS epidemic, but the the birth rate x domi- nates the birth rate x(1 - x/N) of the SIS process

  7. Applying Human Factors during the SIS Life Cycle

    SciTech Connect (OSTI)

    Avery, K.

    2010-05-05T23:59:59.000Z

    Safety Instrumented Systems (SIS) are widely used in U.S. Department of Energy's (DOE) nonreactor nuclear facilities for safety-critical applications. Although use of the SIS technology and computer-based digital controls, can improve performance and safety, it potentially introduces additional complexities, such as failure modes that are not readily detectable. Either automated actions or manual (operator) actions may be required to complete the safety instrumented function to place the process in a safe state or mitigate a hazard in response to an alarm or indication. DOE will issue a new standard, Application of Safety Instrumented Systems Used at DOE Nonreactor Nuclear Facilities, to provide guidance for the design, procurement, installation, testing, maintenance, operation, and quality assurance of SIS used in safety significant functions at DOE nonreactor nuclear facilities. The DOE standard focuses on utilizing the process industry consensus standard, American National Standards Institute/ International Society of Automation (ANSI/ISA) 84.00.01, Functional Safety: Safety Instrumented Systems for the Process Industry Sector, to support reliable SIS design throughout the DOE complex. SIS design must take into account human-machine interfaces and their limitations and follow good human factors engineering (HFE) practices. HFE encompasses many diverse areas (e.g., information display, user-system interaction, alarm management, operator response, control room design, and system maintainability), which affect all aspects of system development and modification. This paper presents how the HFE processes and principles apply throughout the SIS life cycle to support the design and use of SIS at DOE nonreactor nuclear facilities.

  8. Charged particle accelerator grating

    DOE Patents [OSTI]

    Palmer, Robert B. (Shoreham, NY)

    1986-01-01T23:59:59.000Z

    A readily disposable and replaceable accelerator grating for a relativistic particle accelerator. The grating is formed for a plurality of liquid droplets that are directed in precisely positioned jet streams to periodically dispose rows of droplets along the borders of a predetermined particle beam path. A plurality of lasers are used to direct laser beams into the droplets, at predetermined angles, thereby to excite the droplets to support electromagnetic accelerating resonances on their surfaces. Those resonances operate to accelerate and focus particles moving along the beam path. As the droplets are distorted or destroyed by the incoming radiation, they are replaced at a predetermined frequency by other droplets supplied through the jet streams.

  9. REGISTRATION IN iSIS Additional information about fall 2013 course registration, per the ASE Registrar

    E-Print Network [OSTI]

    Tufts University

    #04022013 REGISTRATION IN iSIS Additional information about fall 2013 course registration, per the ASE Registrar This year, fall 2013 registration will happen in iSIS, Tufts' new Integrated Student Information System, located at http://go.tufts.edu/isis. Accessing iSIS Log into iSIS with your Tufts Username

  10. Electronics Division Technical Note No. 189 File: \\\\EAGLE\\cv-cdl-sis\\Docs\\Rack\\SIS Mixer Bias Supply\\Simulation\\Report2.doc Page 1 of 5

    E-Print Network [OSTI]

    Groppi, Christopher

    1 to protect the mixer junction from static discharge1 . The mixers are powered by bias suppliesElectronics Division Technical Note No. 189 File: \\\\EAGLE\\cv-cdl-sis\\Docs\\Rack\\SIS Mixer Bias Supply\\Simulation\\Report2.doc Page 1 of 5 Stability Analysis of SIS Mixer Bias Supply with 1K Ohm

  11. Bragg grating rogue wave

    E-Print Network [OSTI]

    Degasperis, Antonio; Aceves, Alejandro B

    2015-01-01T23:59:59.000Z

    We derive the rogue wave solution of the classical massive Thirring model, that describes nonlinear optical pulse propagation in Bragg gratings. Combining electromagnetically induced transparency with Bragg scattering four-wave mixing, may lead to extreme waves at extremely low powers.

  12. Electrically-programmable diffraction grating

    DOE Patents [OSTI]

    Ricco, A.J.; Butler, M.A.; Sinclair, M.B.; Senturia, S.D.

    1998-05-26T23:59:59.000Z

    An electrically-programmable diffraction grating is disclosed. The programmable grating includes a substrate having a plurality of electrodes formed thereon and a moveable grating element above each of the electrodes. The grating elements are electrostatically programmable to form a diffraction grating for diffracting an incident beam of light as it is reflected from the upper surfaces of the grating elements. The programmable diffraction grating, formed by a micromachining process, has applications for optical information processing (e.g. optical correlators and computers), for multiplexing and demultiplexing a plurality of light beams of different wavelengths (e.g. for optical fiber communications), and for forming spectrometers (e.g. correlation and scanning spectrometers). 14 figs.

  13. Charged particle accelerator grating

    DOE Patents [OSTI]

    Palmer, R.B.

    1985-09-09T23:59:59.000Z

    A readily disposable and replaceable accelerator grating for a relativistic particle accelerator is described. The grating is formed for a plurality of liquid droplets that are directed in precisely positioned jet streams to periodically dispose rows of droplets along the borders of a predetermined particle beam path. A plurality of lasers are used to direct laser beams onto the droplets, at predetermined angles, thereby to excite the droplets to support electromagnetic accelerating resonances on their surfaces. Those resonances operate to accelerate and focus particles moving along the beam path. As the droplets are distorted or destroyed by the incoming radiation, they are replaced at a predetermined frequency by other droplets supplied through the jet streams.

  14. 2.4 Grating formula

    E-Print Network [OSTI]

    2010-09-14T23:59:59.000Z

    2.4. GRATING FORMULA. 27 to x1 for every x2. In fact, if the grating problem attains a unique solution then we want to show that v(x1,x2) = u(x1,x2)e. ?i?x1.

  15. Fiber Grating Environmental Sensing System

    DOE Patents [OSTI]

    Schulz, Whitten L. (Fairview, OR); Udd, Eric (Fairview, OR)

    2003-07-29T23:59:59.000Z

    Fiber grating environmental measurement systems are comprised of sensors that are configured to respond to changes in moisture or chemical content of the surrounding medium through the action of coatings and plates inducing strain that is measured. These sensors can also be used to monitor the interior of bonds for degradation due to aging, cracking, or chemical attack. Means to multiplex these sensors at high speed and with high sensitivity can be accomplished by using spectral filters placed to correspond to each fiber grating environmental sensor. By forming networks of spectral elements and using wavelength division multiplexing arrays of fiber grating sensors may be processed in a single fiber line allowing distributed high sensitivity, high bandwidth fiber optic grating environmental sensor systems to be realized.

  16. Near-perfect diffraction grating rhomb

    DOE Patents [OSTI]

    Wantuck, Paul J. (Santa Fe, NM)

    1990-01-01T23:59:59.000Z

    A near-perfect grating rhomb enables an output beam to be diffracted to an angle offset from the input beam. The correcting grating is tipped relative to the dispersing grating to provide the offset angle. The correcting grating is further provided with a groove spacing which differs from the dispersing grating groove space by an amount effective to substantially remove angular dispersion in the output beam. A near-perfect grating rhomb has the capability for selective placement in a FEL to suppress sideband instabilities arising from the FEL.

  17. Fabrication of extremely smooth blazed diffraction gratings

    E-Print Network [OSTI]

    Chang, Chih-Hao, 1980-

    2004-01-01T23:59:59.000Z

    High efficiency diffraction gratings are important in a variety of applications, such as optical telecommunications, lithography, and spectroscopy. Special interest has been placed on blazed diffraction gratings for their ...

  18. Compact Imaging Spectrometer Utilizing Immersed Gratings

    DOE Patents [OSTI]

    Chrisp, Michael P. (Danville, CA); Lerner, Scott A. (Corvallis, OR); Kuzmenko, Paul J. (Livermore, CA); Bennett, Charles L. (Livermore, CA)

    2006-03-21T23:59:59.000Z

    A compact imaging spectrometer with an immersive diffraction grating that compensates optical distortions. The imaging spectrometer comprises an entrance slit for transmitting light, a system for receiving the light and directing the light, an immersion grating, and a detector array. The entrance slit, the system for receiving the light, the immersion grating, and the detector array are positioned wherein the entrance slit transmits light to the system for receiving the light and the system for receiving the light directs the light to the immersion grating and the immersion grating receives the light and directs the light through an optical element to the detector array.

  19. The grating as an accelerating structure

    SciTech Connect (OSTI)

    Fernow, R.C.

    1991-02-01T23:59:59.000Z

    This report considers the use of a diffraction grating as an accelerating structure for charged particle beams. We examine the functional dependence of the electromagnetic fields above the surface of a grating. Calculations are made of the strength of the accelerating modes for structures with {pi} and 2{pi} phase advance per period and for incident waves polarized with either the E or H vector along the grooves of the grating. We consider examples of using gratings in a laser linac and in a grating lens. We also briefly examine previous results published about this subject. 36 refs.

  20. How to search for Distribution Requirements through iSIS School of Arts and Sciences Distribution Requirements

    E-Print Network [OSTI]

    Dennett, Daniel

    How to search for Distribution Requirements through iSIS School of Arts and Sciences Distribution can be accessed from the iSIS log in page or once the user has logged into iSIS, make sure to use

  1. High Efficiency Germanium Immersion Gratings

    SciTech Connect (OSTI)

    Kuzmenko, P J; Davis, P J; Little, S L; Little, L M; Bixler, J V

    2006-05-01T23:59:59.000Z

    We have fabricated several germanium immersion gratings by single crystal, single point diamond flycutting on an ultra-precision lathe. Use of a dead sharp tool produces groove corners less than 0.1 micron in radius and consequently high diffraction efficiency. We measured first order efficiencies in immersion of over 80% at 10.6 micron wavelength. Wavefront error was low averaging 0.06 wave rms (at 633 nm) across the full aperture. The grating spectral response was free of ghosts down to our detection limit of 1 part in 10{sup 4}. Scatter should be low based upon the surface roughness. Measurement of the spectral line profile of a CO{sub 2} laser sets an upper bound on total integrated scatter of 0.5%.

  2. A New Multilayer-Based Grating for Hard X-ray Grating Interferometry...

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

    built utilizing the new micro-multilayer grating provides a projection view of the blood vessels. A new kind of x-ray multilayer grating that could open a pathway for...

  3. Diffraction gratings used as identifying markers

    DOE Patents [OSTI]

    Deason, V.A.; Ward, M.B.

    1991-03-26T23:59:59.000Z

    A finely detailed diffraction grating is applied to an object as an identifier or tag which is unambiguous, difficult to duplicate, or remove and transfer to another item, and can be read and compared with prior readings with relative ease. The exact pattern of the diffraction grating is mapped by diffraction moire techniques and recorded for comparison with future readings of the same grating. 7 figures.

  4. ALS Scientists Patent Technique To Dramatically Advance Grating...

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

    of the new gratings he's developed. Dmitriy Voronov, an ESG scientist involved in the development of the new grating technique, created the patentable, atomically perfect...

  5. Fiber optic diffraction grating maker

    DOE Patents [OSTI]

    Deason, Vance A. (Idaho Falls, ID); Ward, Michael B. (Idaho Falls, ID)

    1991-01-01T23:59:59.000Z

    A compact and portable diffraction grating maker comprised of a laser beam, optical and fiber optics devices coupling the beam to one or more evanescent beam splitters, and collimating lenses or mirrors directing the split beam at an appropriate photosensitive material. The collimating optics, the output ends of the fiber optic coupler and the photosensitive plate holder are all mounted on an articulated framework so that the angle of intersection of the beams can be altered at will without disturbing the spatial filter, collimation or beam quality, and assuring that the beams will always intersect at the position of the plate.

  6. Fiber optic diffraction grating maker

    DOE Patents [OSTI]

    Deason, V.A.; Ward, M.B.

    1991-05-21T23:59:59.000Z

    A compact and portable diffraction grating maker is comprised of a laser beam, optical and fiber optics devices coupling the beam to one or more evanescent beam splitters, and collimating lenses or mirrors directing the split beam at an appropriate photosensitive material. The collimating optics, the output ends of the fiber optic coupler and the photosensitive plate holder are all mounted on an articulated framework so that the angle of intersection of the beams can be altered at will without disturbing the spatial filter, collimation or beam quality, and assuring that the beams will always intersect at the position of the plate. 4 figures.

  7. Gratings Inc | 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.pdfGetec AG Contracting JumpGoveNebraska: EnergyGratings Inc Jump to: navigation,

  8. Compact imaging spectrometer utilizing immersed gratings

    DOE Patents [OSTI]

    Chrisp, Michael P. (Danville, CA); Lerner, Scott A. (Corvallis, OR); Kuzmenko, Paul J. (Livermore, CA); Bennett, Charles L. (Livermore, CA)

    2007-07-03T23:59:59.000Z

    A compact imaging spectrometer with an immersive diffraction grating that compensates optical distortions. The imaging spectrometer comprises an entrance slit for transmitting light, means for receiving the light and directing the light, an immersion grating, and a detector array. The entrance slit, the means for receiving the light, the immersion grating, and the detector array are positioned wherein the entrance slit transmits light to the means for receiving the light and the means for receiving the light directs the light to the immersion grating and the immersion grating receives the light and directs the light to the means for receiving the light, and the means for receiving the light directs the light to the detector array.

  9. Proceedings of the 2007 IEEE Swarm Intelligence Symposium (SIS 2007) Enhanced Learning in Fuzzy Simulation Models

    E-Print Network [OSTI]

    Parsopoulos, Konstantinos

    their efficiency and accuracy of simulation. Recently, learning algorithms that employ Particle Swarm OptimizationProceedings of the 2007 IEEE Swarm Intelligence Symposium (SIS 2007) Enhanced Learning in Fuzzy Simulation Models Using Memetic Particle Swarm Optimization Y.G. Petalas13, K.E. Parsopoulos1'3, E

  10. 1 INTRODUCTION & IEC 61508 Safety instrumented systems (SIS) play a major part

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    1 INTRODUCTION & IEC 61508 Safety instrumented systems (SIS) play a major part in industrial risk electrical / electronic / pro- grammable electronic (E/E/PE) safety-related sys- tems, is the IEC 61508 (IEC, 2005a). The second edition will soon be adopted in 2009 (IEC, 2009). Objectives are to enable

  11. in North america, Canada Goose (Branta canaden-sis) populations are defined and partially managed

    E-Print Network [OSTI]

    Jodice, Patrick

    in North america, Canada Goose (Branta canaden- sis) populations are defined and partially managed based on affiliations with breeding grounds. three populations of migratory Canada Geese occur- ulation (hindman et al. 2004). Canada Geese from the atlantic Population (predominantly Branta canadensis

  12. NRAO Electronics Division Technical Note 179 Ground Loops in SIS Bias Circuits

    E-Print Network [OSTI]

    Groppi, Christopher

    the possibility of static discharge damaging the mixer when it is connected to the floating bias supply. 3 SIS mixer, and it may be difficult in practice to obtain a stable bias voltage using a high value receiver, in which one end of the junction is connected to the grounded mixer block, such a resistor can

  13. Grating enhanced solid-state laser amplifiers

    DOE Patents [OSTI]

    Erlandson, Alvin C. (Livermore, CA); Britten, Jerald A. (Clayton, CA)

    2010-11-09T23:59:59.000Z

    A novel method and apparatus for suppressing ASE and parasitic oscillation modes in a high average power laser is introduced. Such an invention, as disclosed herein, uses diffraction gratings to increase gain, stored energy density, and pumping efficiency of solid-state laser gain media, such as, but not limited to rods, disks and slabs. By coupling predetermined gratings to solid-state gain media, such as crystal or ceramic laser gain media, ASE and parasitic oscillation modes can be effectively suppressed.

  14. NbTiN Based SIS Multilayer Structures for SRF Applications

    SciTech Connect (OSTI)

    Valente, Anne-marie; Eremeev, Grigory; Phillips, H.; Reece, Charles; Spradlin, Joshua; Yang, Qiguang; Lukaszew, Rosa

    2013-09-01T23:59:59.000Z

    For the past three decades, bulk niobium has been the material of choice for SRF cavities applications. RF cavity performance is now approaching the theoretical limit for bulk niobium. For further improvement of RF cavity performance for future accelerator projects, Superconductor ? Insulator - Superconductor (SIS) multilayer structures (as recently proposed by Alex Gurevich) present the theoretical prospect to reach RF performance beyond bulk Nb, using thinly layered higher-Tc superconductors with enhanced Hc1. Jefferson Lab (JLab) is pursuing this approach with the development of NbTiN and AlN based multilayer SIS structures. This paper presents the results on the characteristics of NbTiN films and the first RF measurements on NbTiN-based multilayer structure on thick Nb films.

  15. Fabrication and characterization of the source grating for visibility improvement of neutron phase imaging with gratings

    SciTech Connect (OSTI)

    Kim, Jongyul [Neutron Science Division, Korea Atomic Energy Research Institute, Daejeon 305-353 (Korea, Republic of); Nuclear and Quantum Engineering Department, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of); Lee, Kye Hong; Lim, Chang Hwy; Kim, Taejoo [Neutron Science Division, Korea Atomic Energy Research Institute, Daejeon 305-353 (Korea, Republic of); Ahn, Chi Won [Nano Fusion Technology Division, National Nanofab Center, Daejeon 305-701 (Korea, Republic of); Cho, Gyuseong [Nuclear and Quantum Engineering Department, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of); Lee, Seung Wook [School of Mechanical Engineering, Pusan National University, Pusan 609-735 (Korea, Republic of)

    2013-06-15T23:59:59.000Z

    The fabrication of gratings including metal deposition processes for highly neutron absorbing lines is a critical issue to achieve a good visibility of the grating-based phase imaging system. The source grating for a neutron Talbot-Lau interferometer is an array of Gadolinium (Gd) structures that are generally made by sputtering, photo-lithography, and chemical wet etching. However, it is very challenging to fabricate a Gd structure with sufficient neutron attenuation of approximately more than 20 {mu}m using a conventional metal deposition method because of the slow Gd deposition rate, film stress, high material cost, and so on. In this article, we fabricated the source gratings for neutron Talbot-Lau interferometers by filling the silicon structure with Gadox particles. The new fabrication method allowed us a very stable and efficient way to achieve a much higher Gadox filled structure than a Gd film structure, and is even more suitable for thermal polychromatic neutrons, which are more difficult to stop than cold neutrons. The newly fabricated source gratings were tested at the polychromatic thermal neutron grating interferometer system of HANARO at the Korea Atomic Energy Research Institute, and the visibilities and images from the neutron phase imaging system with the new source gratings were compared with those fabricated by a Gd deposition method.

  16. Ultra-high density diffraction grating

    DOE Patents [OSTI]

    Padmore, Howard A.; Voronov, Dmytro L.; Cambie, Rossana; Yashchuk, Valeriy V.; Gullikson, Eric M.

    2012-12-11T23:59:59.000Z

    A diffraction grating structure having ultra-high density of grooves comprises an echellette substrate having periodically repeating recessed features, and a multi-layer stack of materials disposed on the echellette substrate. The surface of the diffraction grating is planarized, such that layers of the multi-layer stack form a plurality of lines disposed on the planarized surface of the structure in a periodical fashion, wherein lines having a first property alternate with lines having a dissimilar property on the surface of the substrate. For example, in one embodiment, lines comprising high-Z and low-Z materials alternate on the planarized surface providing a structure that is suitable as a diffraction grating for EUV and soft X-rays. In some embodiments, line density of between about 10,000 lines/mm to about 100,000 lines/mm is provided.

  17. ON THE GAGE FACTOR FOR OPTICAL FIBER GRATING STRAIN GAGES

    E-Print Network [OSTI]

    Park, Yong-Lae

    ON THE GAGE FACTOR FOR OPTICAL FIBER GRATING STRAIN GAGES Richard J. Black1 , David Zare1 , Levy Oblea1 , Yong-Lae Park1 , Behzad Moslehi1 , and Craig Neslen2 1 Intelligent Fiber Optic Systems of grating and fiber types. KEY WORDS: Fiber-Optic Gratings, Fiber-Optic Sensors, Strain Gage Factor 1

  18. AS&E Registering for Classes Use this registration guide to navigate your iSIS student Homepage, search the Schedule of Classes, manage your

    E-Print Network [OSTI]

    Dennett, Daniel

    1 Student AS&E Registering for Classes Use this registration guide to navigate your iSIS student, and plan out tentative future schedules with My Planner. To log in: 1. Log in to iSIS: go.tufts.edu/isis Your customized iSIS homepage opens. If you do not know your Tufts Username or Password, go to http

  19. Formal Support for Quantitative Analysis of Residual Risks in Safety-Critical Systems

    E-Print Network [OSTI]

    and Effects Analysis (FMEA) and Fault-Tree Analy- sis (FTA) [16]. However, many of these techniques become

  20. Fluidized bed boiler having a segmented grate

    DOE Patents [OSTI]

    Waryasz, Richard E. (Longmeadow, MA)

    1984-01-01T23:59:59.000Z

    A fluidized bed furnace (10) is provided having a perforate grate (9) within a housing which supports a bed of particulate material including some combustibles. The grate is divided into a plurality of segments (E2-E6, SH1-SH5, RH1-RH5), with the airflow to each segment being independently controlled. Some of the segments have evaporating surface imbedded in the particulate material above them, while other segments are below superheater surface or reheater surface. Some of the segments (E1, E7) have no surface above them, and there are ignitor combustors (32, 34) directed to fire into the segments, for fast startup of the furnace without causing damage to any heating surface.

  1. Compact reflective imaging spectrometer utilizing immersed gratings

    DOE Patents [OSTI]

    Chrisp, Michael P. (Danville, CA)

    2006-05-09T23:59:59.000Z

    A compact imaging spectrometer comprising an entrance slit for directing light, a first mirror that receives said light and reflects said light, an immersive diffraction grating that diffracts said light, a second mirror that focuses said light, and a detector array that receives said focused light. The compact imaging spectrometer can be utilized for remote sensing imaging spectrometers where size and weight are of primary importance.

  2. Image-line voltage controlled oscillators and grating antennas

    E-Print Network [OSTI]

    Kirk, Alexander MacDonald

    1991-01-01T23:59:59.000Z

    image-line grating antenna is proposed. Combining a Gunn Journal model is IEEE Transactions on microwave Theory and Techniques. diode source with a dielectric grating antenna gives a compact system with high directivity, While the dielectric grating...-wave applications, " IEEE Trans. Microwave Theory Tech. , vol, MTT-31, pp. 199-209, Feb. 1983, [3) R, E, Horn, H. Jacobs, E. Freibergs, and K. L. Klohn, "Electronic modulated beam-steerable silicon waveguide array antenna. " IEEE Trans. Mi crowave Theory Tech...

  3. Manipulation of plasma grating by impulsive molecular alignment

    SciTech Connect (OSTI)

    Lu, Peifen; Wu, Jian; Zeng, Heping [State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062 (China)] [State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062 (China)

    2013-11-25T23:59:59.000Z

    We experimentally demonstrated that multiphoton-ionization-induced plasma grating in air could be precisely manipulated by impulsive molecular alignment. In the linear region, the impulsively aligned molecules modulated the diffraction efficiency of the plasma grating for a time-delayed femtosecond laser pulse. In the nonlinear region, the third harmonic generation from the plasma grating was either enhanced or suppressed by following the alignment of the molecules.

  4. MICROSTRUCTURED OPTICAL FIBER BRAGG GRATING SENSORS FOR STRUCTURAL HEALTH MONITORING APPLICATIONS

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    MICROSTRUCTURED OPTICAL FIBER BRAGG GRATING SENSORS FOR STRUCTURAL HEALTH MONITORING APPLICATIONS optical fiber Bragg grating (MOFBG) sensors for structural health monitoring applications. We then focus, optical fiber sensor, fiber Bragg grating, structural health monitoring INTRODUCTION Microstructured

  5. Transcript Request Form Note that any current or former student with a UTLN may request a transcript through iSIS at

    E-Print Network [OSTI]

    Dennett, Daniel

    a transcript through iSIS at http://go.tufts.edu/isis Please complete this form to request a Sackler School

  6. Fabrication of critical-angle transmission gratings for high efficiency x-ray spectroscopy

    E-Print Network [OSTI]

    Ahn, Minseung

    2009-01-01T23:59:59.000Z

    Diffraction gratings are fundamental optical elements that separate incident light into its constituent wavelength components. This dispersive feature of diffraction gratings has been broadly utilized in many applications ...

  7. Energy resolved X-ray grating interferometry

    SciTech Connect (OSTI)

    Thuering, T.; Stampanoni, M. [Swiss Light Source, Paul Scherrer Institut, Villigen PSI (Switzerland) [Swiss Light Source, Paul Scherrer Institut, Villigen PSI (Switzerland); Institute for Biomedical Engineering, Swiss Federal Institute of Technology, Zurich (Switzerland); Barber, W. C.; Iwanczyk, J. S. [DxRay, Inc., Northridge, California 91324 (United States)] [DxRay, Inc., Northridge, California 91324 (United States); Seo, Y.; Alhassen, F. [UCSF Physics Research Laboratory, Department of Radiology and Biomedical Imaging, University of California, San Francisco, California 94143 (United States)] [UCSF Physics Research Laboratory, Department of Radiology and Biomedical Imaging, University of California, San Francisco, California 94143 (United States)

    2013-05-13T23:59:59.000Z

    Although compatible with polychromatic radiation, the sensitivity in X-ray phase contrast imaging with a grating interferometer is strongly dependent on the X-ray spectrum. We used an energy resolving detector to quantitatively investigate the dependency of the noise from the spectral bandwidth and to consequently optimize the system-by selecting the best energy band matching the experimental conditions-with respect to sensitivity maximization and, eventually, dose. Further, since theoretical calculations of the spectrum are usually limited due to non-ideal conditions, an energy resolving detector accurately quantifies the spectral changes induced by the interferometer including flux reduction and beam hardening.

  8. Nanoparticle-Enhanced Diffraction Gratings for Ultrasensitive Surface Plasmon Biosensing

    E-Print Network [OSTI]

    Nanoparticle-Enhanced Diffraction Gratings for Ultrasensitive Surface Plasmon Biosensing Alastair W in a surface plasmon resonance geometry is observed due to the optical coupling of the planar surface plasmons in the grating to the localized surface plasmons in the gold nanoparticles. As a first example

  9. Distributed Bragg grating integrated-optical filters: Synthesis and fabrication

    E-Print Network [OSTI]

    Murphy, Thomas E.

    to define rib waveguides and grating patterns that have multiple quarter-wave shifts along the grating be increased by reducing the interchannel spacing. As the channel spacing is reduced, however, the bandwidth of the optical filters that are used to separate the channels must be commensurately reduced. One way

  10. Near-field imaging of perfectly conducting grating surfaces

    E-Print Network [OSTI]

    2013-08-29T23:59:59.000Z

    Aug 29, 2013 ... reflective interfaces, beam splitters, and sensors. De- pending on the ... capture fine structures of grating profiles with multi- ..... grating profile func- tion g only contains a couple of low Fourier modes. ... We considered two exam- ples, one of ... tions should be considered, and will report the results elsewhere.

  11. Increase of the grating coupler bandwidth with a graphene overlay

    SciTech Connect (OSTI)

    Cheng, Zhenzhou; Li, Zhen; Xu, Ke; Tsang, Hon Ki, E-mail: hktsang@ee.cuhk.edu.hk [Department of Electronic Engineering, The Chinese University of Hong Kong, Shatin (Hong Kong)

    2014-03-17T23:59:59.000Z

    We present theoretical and experimental results that demonstrate an increase in the grating bandwidth by placing a graphene on the chip. A focusing subwavelength grating with coupling efficiency of ?4.3?dB and 1?dB bandwidth of ?60?nm was demonstrated. After a graphene sheet was transferred onto the chip, the maximum 1?dB bandwidth was increased to ?72?nm. Experimental results are consistent with the calculated graphene induced waveguide refractive index and dispersion changes, and the bandwidth improvement may be attributed to the reduction of grating dispersion. This study may be of interest for graphene-on-silicon photonic integrated circuit applications.

  12. Grate assembly for fixed-bed coal gasifier

    DOE Patents [OSTI]

    Notestein, John E. (Morgantown, WV)

    1993-01-01T23:59:59.000Z

    A grate assembly for a coal gasifier of a moving-bed or fixed-bed type is provided for crushing agglomerates of solid material such as clinkers, tailoring the radial distribution of reactant gases entering the gasification reaction zone, and control of the radial distribution of downwardly moving solid velocities in the gasification and combustion zone. The clinker crushing is provided by pinching clinkers between vertically oriented stationary bars and angled bars supported on the upper surface of a rotating conical grate. The distribution of the reactant gases is provided by the selective positioning of horizontally oriented passageways extending through the grate. The radial distribution of the solids is provided by mounting a vertically and generally radially extending scoop mechanism on the upper surface of the grate near the apex thereof.

  13. Performance of volume phase gratings manufactured using ultrafast laser inscription

    E-Print Network [OSTI]

    Lee, David; Cunningham, Colin R

    2012-01-01T23:59:59.000Z

    Ultrafast laser inscription (ULI) is a rapidly maturing technique which uses focused ultrashort laser pulses to locally modify the refractive index of dielectric materials in three-dimensions (3D). Recently, ULI has been applied to the fabrication of astrophotonic devices such as integrated beam combiners, 3D integrated waveguide fan-outs and multimode-to-single mode convertors (photonic lanterns). Here, we outline our work on applying ULI to the fabrication of volume phase gratings (VPGs) in fused silica and gallium lanthanum sulphide (GLS) glasses. The VPGs we fabricated had a spatial frequency of 333 lines/mm. The optimum fused silica grating was found to exhibit a first order diffraction efficiency of 40 % at 633 nm, but exhibited approximately 40 % integrated scattered light. The optimum GLS grating was found to exhibit a first order diffraction efficiency of 71 % at 633 nm and less than 5 % integrated scattered light. Importantly for future astronomy applications, both gratings survived cooling to 20 K....

  14. Near-field imaging of perfectly conducting grating surfaces

    E-Print Network [OSTI]

    2013-11-06T23:59:59.000Z

    and sensors. Depending on the ... method in order to capture fine structures of grating profiles with multiple ..... For the stability test, some relative random ... g only contains a couple of low Fourier modes. .... will report the results elsewhere.

  15. A 6-beam combiner using superimposed volume index holographic gratings

    E-Print Network [OSTI]

    Yum, HoNam

    2005-11-01T23:59:59.000Z

    In this thesis, a 6-beam combiner using multiplexed holograms in dye-doped polymer is investigated. It is realized by recording six superimposed holographic gratings, which show uniform diffraction efficiency. The coupled wave theory for N...

  16. Low efficiency gratings for 3rd harmonic diagnostics applications

    SciTech Connect (OSTI)

    Britten, J.A.; Boyd, R.D.; Perry, M.D.; Shore, B.W.; Thomas, I.M.

    1995-08-09T23:59:59.000Z

    The baseline design of the National Ignition Facility (NIF) calls for sampling gratings to provide third-harmonic energy diagnostics in the highly constrained area of the target chamber. These 40 {times} 4O cm transmission gratings are to diffract at (order +1) nominally 0.3% of the incident 351 run light at a small angle on to a focusing mirror and into a calorimeter. The design calls for a plane grating of 500 lines/mm, and approximately 30 run deep, etched into a fused silica focusing lens and subsequently overcoated with a solgel anti reflective coating. Gratings of similar aperture and feature size have been produced for other applications by ion etching processes, but, in an effort to reduce substantially the cost of such optics, we are studying the feasibility of making these gratings by wet chemical etching techniques. Experimentation with high-quality fused silica substrates on 5 and 15 cm. scale has led to a wet etching process which can meet the design goals and which offers no significant scaleup barriers to full sized optics. The grating is produced by holographic exposure and a series of processing steps using only a photoresist mask and a final hydrofluoric acid etch. Gratings on 15 cm diameter test substrates exhibit absolute diffraction efficiencies from 0.2--0.4% with a standard deviation of about 15% of the mean over the full aperture. The efficiency variation is due to variation in linewidth caused by spatial nonuniformities in exposure energy. Uniformity improvements can be realized by using a smaller, more uniform portion of the exposure beam and exposing for longer times. The laser damage threshold for these gratings has been measured at LLNL and found to be identical to that of the fused silica substrate.

  17. Image-line voltage controlled oscillators and grating antennas

    E-Print Network [OSTI]

    Kirk, Alexander MacDonald

    1991-01-01T23:59:59.000Z

    IMAGE-LINE VOLTAGE CONTROLLED OSCILLATORS AND GRATING ANTENNAS A Thesis by ALEXANDER MacDONALD KIRK Submitted to the Office of Graduate Studies of Texas ABM University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE May 1991 Major Subject: Electrical Engineering IMAGE-LINE VOLTAGE CONTROLLED OSCILLATORS AND GRATING ANTENNAS A Thesis by ALEXANDER MacDONALD KIRK Approved as to style and content by: Kai Chang (Chair of Committee) Robert D. Nevels...

  18. Compact Refractive Imaging Spectrometer Designs Utilizing Immersed Gratings

    DOE Patents [OSTI]

    Lerner, Scott A. (Livermore, CA); Bennett, Charles L. (Livermore, CA); Bixler, Jay V. (Oakland, CA); Kuzmenko, Paul J. (Livermore, CA); Lewis, Isabella T. (San Jose, CA)

    2005-07-26T23:59:59.000Z

    A compact imaging spectrometer comprising an entrance slit for directing light, a first means for receiving the light and focusing the light, an immersed diffraction grating that receives the light from the first means and defracts the light, a second means for receiving the light from the immersed diffraction grating and focusing the light, and an image plane that receives the light from the second means

  19. Performance of multilayer coated concave gratings in the extreme ultraviolet

    SciTech Connect (OSTI)

    Bixler, J.V.; Barbee, T.W. Jr.; Dietrich, D.D.

    1989-06-13T23:59:59.000Z

    Recent advances in multilayer structures for the Extreme Ultraviolet now make it possible to construct diffraction gratings in the wavelength range below 250 /angstrom/ which can be used for precision measurements using normal incidence spectrometers. We report results from two such gratings, one conventionally ruled and other holographically ruled. Both are one meter radius, 1200 lines per millimeter gratings coated with a molybdenum-silicon multilayer for use in the 150 /angstrom/ wavelength region. A McPherson 225 one meter normal incidence spectrometer with a Garton flash tube source and a film detector was used to test the resolution. Semiquantitative efficiency measurements were made by comparing the spectra with that produced by an osmium coated gratings. Oxygen lines in the wavelength region of interest (characteristic of the source) are easily detected and well resolved with both multilayer coated gratings. The same lines are faint or undetected with the osmium coated grating. Quantitative efficiency measurement were performed using a Penning source and a photon counting detector. 9 refs., 4 figs., 1 tab.

  20. Performance of a variable line spaced master reflection grating for use in the reflection grating spectrometer on the X-ray Multimirror Mission

    SciTech Connect (OSTI)

    Bixler, J.V.; Hailey, C.J.; Mauche, C.W.; Teague, P.F.; Thoe, R.S. (Lawrence Livermore National Lab., CA (United States)); Kahn, S.M.; Paerels, F.B.S. (California Univ., Berkeley, CA (United States). Space Sciences Lab.)

    1991-07-25T23:59:59.000Z

    The X-ray Multimirror Mission will include a spectrometer consisting of two arrays of variable line spaced reflection gratings for use in the 350 eV to 2.5 keV energy range. Approximately 720 replica gratings will be needed for two flight grating arrays and one spare. We have begun evaluation of potential master gratings to be used in the replication process. We report both reflectivity and scattering X-ray measurements for three mechanically ruled prototype master gratings. 8 refs., 8 figs.

  1. Applications of laser-induced gratings to spectroscopy and dynamics

    SciTech Connect (OSTI)

    Rohlfing, E.A. [Sandia National Laboratories, Livermore, CA (United States)

    1993-12-01T23:59:59.000Z

    This program has traditionally emphasized two principal areas of research. The first is the spectroscopic characterization of large-amplitude motion on the ground-state potential surface of small, transient molecules. The second is the reactivity of carbonaceous clusters and its relevance to soot and fullerene formation in combustion. Motivated initially by the desire to find improved methods of obtaining stimulated emission pumping (SEP) spectra of transients, most of our recent work has centered on the use of laser-induced gratings or resonant four-wave mixing in free-jet expansions. These techniques show great promise for several chemical applications, including molecular spectroscopy and photodissociation dynamics. The author describes recent applications of two-color laser-induced grating spectroscopy (LIGS) to obtain background-free SEP spectra of transients and double resonance spectra of nonfluorescing species, and the use of photofragment transient gratings to probe photodissociation dynamics.

  2. Some effects of the transverse-stability requirement on the design of a grating linac

    SciTech Connect (OSTI)

    Kim, K.J.; Kroll, N.M.

    1982-04-01T23:59:59.000Z

    The transverse stability of the grating linac proposed by Palmer is analyzed. It is shown that an open structure such as a grating is always unstable transversely as long as it is uniform. The structure can be made stable by utilizing the strong focusing principle. This is achieved by periodically interrupting the grating shape. We analyze the strong focusing grating linac, and find that the stability requirement places a non-trivial constraint on the phase acceptance of the system.

  3. Water-cooled ion-milled diffraction gratings for the synchrotron radiation community

    SciTech Connect (OSTI)

    McKinney, W.R.; Shannon, C.L.; Shults, E.N.

    1993-08-01T23:59:59.000Z

    Key technical and strategic choices are reviewed, leading to the fabrication method of ion-milled grating grooves for the monochromators at the Advanced Light Source (ALS) at Lawrence Berkeley Laboratory (LBL), and for other synchrotrons. Several laboratories and their industrial partners have joined to manufacture gratings with essentially theoretical performance. Metrology -data and theoretical comparisons are given for square wave profile grating samples ion-milled into electroless nickel surfaces. The extensive capabilities of Hughes Aircraft in grating manufacture are reviewed.

  4. Recording polarization gratings with a standing spiral wave

    SciTech Connect (OSTI)

    Vernon, Jonathan P.; Tondiglia, Vincent P.; White, Timothy J.; Bunning, Timothy J. [Air Force Research Laboratory, Materials and Manufacturing Directorate, 3005 Hobson Way, Suite 1, Wright-Patterson Air Force Base, Ohio 45433 (United States)] [Air Force Research Laboratory, Materials and Manufacturing Directorate, 3005 Hobson Way, Suite 1, Wright-Patterson Air Force Base, Ohio 45433 (United States); Serak, Svetlana V.; Hakobyan, Rafik S.; Aleksanyan, Artur K.; Tabiryan, Nelson V., E-mail: nelson@beamco.com [BEAM Engineering for Advanced Measurements Company, 809 South Orlando Avenue, Suite I, Winter Park, Florida 32789 (United States)

    2013-11-11T23:59:59.000Z

    A scalable and robust methodology for writing cycloidal modulation patterns of optical axis orientation in photosensitive surface alignment layers is demonstrated. Counterpropagating circularly polarized beams, generated by reflection of the input beam from a cholesteric liquid crystal, direct local surface orientation in a photosensitive surface. Purposely introducing a slight angle between the input beam and the photosensitive surface normal introduces a grating period/orientation that is readily controlled and templated. The resulting cycloidal diffractive waveplates offer utility in technologies requiring diffraction over a broad range of angles/wavelengths. This simple methodology of forming polarization gratings offers advantages over conventional fabrication techniques.

  5. Excitation of surface plasmon polaritons using grating coupling Andre Edelmann, Stefan F. Helfert and Jurgen Jahns

    E-Print Network [OSTI]

    Jahns, Jrgen

    Excitation of surface plasmon polaritons using grating coupling Andre Edelmann, Stefan F. Helfert and Jurgen Jahns The excitation of surface plasmon polaritions (SSPs) on planar metallic layers can be reali- zed using grating structures [1]. Plasmonic grating couplers are demonstrated e.g. in [2

  6. Follow-up Report on Possible Contamination of the COS Grating Test Facility from Klinger Stages

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    Follow-up Report on Possible Contamination of the COS Grating Test Facility from Klinger Stages Contamination of the Approved: COS Grating Test Facility from Klinger Stages Size Code Indent No. Document No Astronomy Initial Release Follow-up Report on Possible Contamination of the COS Grating Test Facility from

  7. Spontaneous Spatial Alignment of Polymer Cylindrical Nanodomains on Silicon Nitride Gratings

    E-Print Network [OSTI]

    Sibener, Steven

    a simple method to align lying-down cylindrical domains of PS-b-PMMA in the trough regions of 555 nm deepSpontaneous Spatial Alignment of Polymer Cylindrical Nanodomains on Silicon Nitride Gratings Deepak to the orientation of the grating lines and essentially spans the width of the grating trough. The proposed mechanism

  8. Characterization of Electrodeposited Gold and Palladium Nanowire Gratings with Optical

    E-Print Network [OSTI]

    of a photo- resist pattern on a planar substrate. With the use of a simple transmission grating geometry, up of the bulk material.1-3 For example, when used as a sensor material, the high surface-to-volume ratio

  9. Inverse diffraction grating of Maxwell's equations in biperiodic ...

    E-Print Network [OSTI]

    2014-02-06T23:59:59.000Z

    K. Ito and F. Reitich, A high-order perturbation approach to profile .... as corrective lenses, anti-reflective interfaces, beam splitters, and sensors. .... To reduced the diffraction grating problem from an unbounded domain ?S ...... To test the stability of the method, some relative random noise is added to the ... Table 2 reports.

  10. ADHESIVE DISBOND MONITORING WITH MICROSTRUCTURED OPTICAL FIBER BRAGG GRATING SENSORS

    E-Print Network [OSTI]

    Boyer, Edmond

    ADHESIVE DISBOND MONITORING WITH MICROSTRUCTURED OPTICAL FIBER BRAGG GRATING SENSORS Sanne a sensing system that is based on a combination of 3 optical fiber sensors which are non optical fiber and feature an enhanced response to shear stress. The change in response of the sensors

  11. Development, fabrication, and metrology of the electro-optical breadboard model for the reflection grating array of the XMM grating spectrometer

    SciTech Connect (OSTI)

    Decker, T.A.; Montesanti, R.C.; Bixler, J.V.; Hailey, C.J. [Lawrence Livermore National Lab., CA (United States); Kahn, S.M. [Lawrence Livermore National Lab., CA (United States)]|[California Univ., Berkeley, CA (United States). Dept. of Physics

    1994-07-01T23:59:59.000Z

    A prototype array consisting of eight diffraction gratings has been fabricated for the XMM Reflection Grating Spectrometer. A component of the full spectrometer is an array of approximately 200 diffraction gratings. The diffraction gratings were produced using lightweight silicon carbide substrates and a replication technique. The prototype array was developed and assembled using the same tolerances as the flight arrays which have typical tolerances of 3 {mu}m in translation and sub-arc seconds in rotation. The metrology applied during inspection and assembly included precision linear measurements, full aperture figure measurements, and angular interferometry.

  12. Annular gap solitons in Kerr media with circular gratings

    SciTech Connect (OSTI)

    Scheuer, Jacob [School of Electrical Engineering, Tel-Aviv University, Tel Aviv 69978 (Israel); Center for Nanoscience and Nanotechnology, Tel-Aviv University, Tel Aviv 69978 (Israel); Malomed, Boris [School of Electrical Engineering, Tel-Aviv University, Tel Aviv 69978 (Israel)

    2007-06-15T23:59:59.000Z

    We introduce standing-light patterns trapped in a Bragg grating written along the radial direction in a self-focusing (SF) or self-defocusing (SDF) optical medium. Unlike previously studied axisymmetric settings that deal with the axial propagation, we consider the propagation of light in the radial directions (outward and inward), which may give rise to annular gap solitons (AGSs), supported by the circular grating. An estimate for the threshold of the modulational instability of the AGS against azimuthal perturbations in the SF medium is obtained analytically, and verified by direct simulations. In the SDF model, stable annular and dipole solitons are found in a numerical form, while multipole patterns and vortex rings are unstable. Similar solitons are possible in the Bose-Einstein condensate.

  13. Phase-shifting point diffraction interferometer grating designs

    DOE Patents [OSTI]

    Naulleau, Patrick (Oakland, CA); Goldberg, Kenneth Alan (Berkeley, CA); Tejnil, Edita (San Carlos, CA)

    2001-01-01T23:59:59.000Z

    In a phase-shifting point diffraction interferometer, by sending the zeroth-order diffraction to the reference pinhole of the mask and the first-order diffraction to the test beam window of the mask, the test and reference beam intensities can be balanced and the fringe contrast improved. Additionally, using a duty cycle of the diffraction grating other than 50%, the fringe contrast can also be improved.

  14. Direct Lyapunov exponent analysis enables parametric study of transient signalling governing

    E-Print Network [OSTI]

    transient activation determines cell death against survival fates. DLE analysis enabled identification to apoptotic cell death. It is anticipated that DLE analy- sis will facilitate theoretical investigation

  15. Echelle grating multi-order imaging spectrometer utilizing a catadioptric lens

    DOE Patents [OSTI]

    Chrisp, Michael P; Bowers, Joel M

    2014-05-27T23:59:59.000Z

    A cryogenically cooled imaging spectrometer that includes a spectrometer housing having a first side and a second side opposite the first side. An entrance slit is on the first side of the spectrometer housing and directs light to a cross-disperser grating. An echelle immersions grating and a catadioptric lens are positioned in the housing to receive the light. A cryogenically cooled detector is located in the housing on the second side of the spectrometer housing. Light from the entrance slit is directed to the cross-disperser grating. The light is directed from the cross-disperser grating to the echelle immersions grating. The light is directed from the echelle immersions grating to the cryogenically cooled detector on the second side of the spectrometer housing.

  16. Development of Fiber Bragg Grating Strain, Thermal, and Magnetic Sensors for Smart Structure Applications

    E-Print Network [OSTI]

    Emmons, Michael

    2012-01-01T23:59:59.000Z

    Grating Sensors, Structural Health Monitoring, vol. 2, no.sensor arrays for structural health monitoring of filamentin the field of structural health monitoring by measuring

  17. Reflectivity of linear and nonlinear gamma radiated apodized chirped Bragg grating under ocean

    SciTech Connect (OSTI)

    Hamdalla, Taymour A. [Faculty of Science, Alexandria University, Alexandria (Egypt); Faculty of Science, Tabuk University, Tabuk (Saudi Arabia)

    2012-09-06T23:59:59.000Z

    In this paper, the effect Co{sup 60} gamma radiation is investigated on the effective refractive index of apodized chirped Bragg grating. Nine apodization profiles are considered. Comparison between the reflectivity of the gamma radiated and non radiated fiber Bragg grating has been carried out. The electric field of signals propagating through the apodized chirped fiber Bragg grating (ACFBG) is first calculated from which, new values for the refractive index are determined. The nonlinear effects appear on the ACFBG reflectivity. The effect of nonlinearity and undersea temperature and pressure on the grating is also studied.

  18. Acknowledgements We are grateful to E. DeGiorgi, H. Matano, L ...

    E-Print Network [OSTI]

    Acknowledgements. We are grateful to E. DeGiorgi, H. Matano, L. Nirenberg and L. Peletier for very INTRODUCTION stimulating discussions. During the...

  19. Broadband extreme ultraviolet probing of transient gratings in vanadium dioxide

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

    Sistrunk, Emily; Grilj, Jakob; Jeong, Jaewoo; Samant, Mahesh G.; Gray, Alexander X.; Drr, Hermann A.; Parkin, Stuart S. P.; Ghr, Markus

    2015-01-01T23:59:59.000Z

    Nonlinear spectroscopy in the extreme ultraviolet (EUV) and soft x-ray spectral range offers the opportunity for element selective probing of ultrafast dynamics using core-valence transitions (Mukamel et al., Acc. Chem. Res. 42, 553 (2009)). We demonstrate a step on this path showing core-valence sensitivity in transient grating spectroscopy with EUV probing. We study the optically induced insulator-to-metal transition (IMT) of a VO? film with EUV diffraction from the optically excited sample. The VO? exhibits a change in the 3p-3d resonance of V accompanied by an acoustic response. Due to the broadband probing we are able to separate the two features.

  20. Durable silver thin film coating for diffraction gratings

    DOE Patents [OSTI]

    Wolfe, Jesse D. (Discovery Bay, CA); Britten, Jerald A. (Oakley, CA); Komashko, Aleksey M. (San Diego, CA)

    2006-05-30T23:59:59.000Z

    A durable silver film thin film coated non-planar optical element has been developed to replace Gold as a material for fabricating such devices. Such a coating and resultant optical element has an increased efficiency and is resistant to tarnishing, can be easily stripped and re-deposited without modifying underlying grating structure, improves the throughput and power loading of short pulse compressor designs for ultra-fast laser systems, and can be utilized in variety of optical and spectrophotometric systems, particularly high-end spectrometers that require maximized efficiency.

  1. Development of pulse laser processing for mounting fiber Bragg grating

    SciTech Connect (OSTI)

    Nishimura, Aikihko; Shimada, Yukihiro; Yonemoto, Yukihiro; Suzuki, Hirokazu; Ishibashi, Hisayoshi [Quantum Beam Science Directorate, Japan Atomic Energy Agency, 8-1-7 Umebidai Kidugawa Kyoto 619-0215 (Japan); Applied Laser Technology Institute, Tsuruga Head Office, Japan Atomic Energy Agency, 65-20 Kizaki Tsuruga Fukui 914-8585 (Japan); Technical Research and Development Institute, Kumagai Gumi Co., Ltd., 2-1 Tsukudo, Shinjuku Tokyo 162-8557 (Japan)

    2012-07-11T23:59:59.000Z

    Pulse laser processing has been developed for the application of industrial plants in monitoring and maintenance. Surface cleaning by nano-second laser ablation was demonstrated for decontamination of oxide layers of Cr contained steel. Direct writing by femtosecond processing induced a Bragg grating in optical fiber to make it a seismic sensor for structural health monitoring. Adhesive cement was used to fix the seismic sensor on the surface of reactor coolant pipe material. Pulse laser processing and its related technologies were presented to overcome the severe accidents of nuclear power plants.

  2. Integrated X-ray testing of the electro-optical breadboard model for the XMM reflection grating spectrometer

    SciTech Connect (OSTI)

    Bixler, J.V.; Craig, W.; Decker, T. [Lawrence Livermore National Lab., CA (United States); Aarts, H.; Boggende, T. den; Brinkman, A.C. [Space Research Organization Netherlands, Utrecht (Netherlands); Burkert, W.; Brauninger, H. [Max-Planck Institute fur Extraterrestische Physik, Testanlage (Germany); Branduardi-Raymont, G. [Univ. College London (United Kingdom); Dubbeldam, L. [Space Research Organization Netherlands, Leiden (Netherlands)] [and others

    1994-07-12T23:59:59.000Z

    X-ray calibration of the Electro-Optical Breadboard Model (EOBB) of the XXM Reflection Grating Spectrometer has been carried out at the Panter test facility in Germany. The EOBB prototype optics consisted of a four-shell grazing incidence mirror module followed by an array of eight reflection gratings. The dispersed x-rays were detected by an array of three CCDs. Line profile and efficiency measurements where made at several energies, orders, and geometric configurations for individual gratings and for the grating array as a whole. The x-ray measurements verified that the grating mounting method would meet the stringent tolerances necessary for the flight instrument. Post EOBB metrology of the individual gratings and their mountings confirmed the precision of the grating boxes fabrication. Examination of the individual grating surface`s at micron resolution revealed the cause of anomalously wide line profiles to be scattering due to the crazing of the replica`s surface.

  3. Numerical study and optimization of a diffraction grating for surface plasmon excitation

    E-Print Network [OSTI]

    Floreano, Dario

    Numerical study and optimization of a diffraction grating for surface plasmon excitation Gaetan L Laboratory EPFL-STI-NAM, Station 11, CH-1015 Lausanne, Switzerland ABSTRACT The numerical study of plasmonic plasmon polariton wave on a gold-air interface by a diffraction grating. Our calculations are performed

  4. Increased surface plasmon resonance sensitivity with the use of double Fourier harmonic gratings

    E-Print Network [OSTI]

    Boyer, Edmond

    Increased surface plasmon resonance sensitivity with the use of double Fourier harmonic gratings in the formalism of poles and zeros of the scattering matrix. Surface plasmon resonance is used to increase that a direct coupling between counter propagating surface plasmons using double-harmonic Fourier gratings leads

  5. Fiber Bragg grating inscription by high-intensity femtosecond UV laser light: comparison

    E-Print Network [OSTI]

    Nikogosyan, David N.

    Fiber Bragg grating inscription by high-intensity femtosecond UV laser light: comparison with other 264-nm laser light and a phase mask technique, Bragg grating inscription in a range of different, that result in a significant photosensitivity enhancement of the in- vestigated fibers in comparison

  6. Luminance mechanisms mediate the motion of redgreen isoluminant gratings: the role of ``temporal chromatic aberration''

    E-Print Network [OSTI]

    Mullen, Kathy T.

    Luminance mechanisms mediate the motion of redgreen isoluminant gratings: the role of ``temporal of variable luminance or chromatic noise. In the first experiment, we used dynamic luminance noise to show that direction thresholds for redgreen grating motion are masked by luminance noise over the entire temporal

  7. Slow light with flat or offset band edges in few-mode fiber with two gratings

    E-Print Network [OSTI]

    , C. J. Handmer2, C. Martijn de Sterke2 and M. J. Steel3 1 ARC Center of Excellence for Ultrahigh waveguides with dual Bragg gratings," Electron. Lett. 38, 10491051 (2002). 10. T. Erdogan and J. E. Sipe, "Tilted fiber phase gratings," J. Opt. Soc. Am. A 13, 296313 (1996). 11. S. K. Case, "Coupled-wave theory

  8. Embedded Fibre Bragg Grating Array Sensors in Aluminium Alloy Matrix by Ultrasonic Consolidation

    E-Print Network [OSTI]

    Neirotti, Juan Pablo

    Embedded Fibre Bragg Grating Array Sensors in Aluminium Alloy Matrix by Ultrasonic Consolidation ABSTRCT Fibre Bragg Grating (FBG) array sensors have been successfully embedded in aluminium alloy matrix report for the first time the embedding of FBG array sensors in aluminium alloy matrix composites by UC

  9. Application of Volume diffraction grating for TeraHertz lasing in Volume FEL (VFEL)

    E-Print Network [OSTI]

    V. G. Baryshevsky; K. G. Batrakov; V. I. Stolyarsky

    2002-09-06T23:59:59.000Z

    The generation of induced radiation in volume resonator formed by metal threads is considered. It is shown that using of such volume diffraction grating allows increasing of lasing efficiency in terahertz range. The requirements on beam and grating parameters are obtained.

  10. Characterization of multilayer coated concave diffraction gratings in the extreme ultraviolet

    SciTech Connect (OSTI)

    Bixler, J.; Barbee, T. Jr.; Dietrich, D.

    1989-02-01T23:59:59.000Z

    We describe here our work to date on characterizing two multilayer coated concave diffraction gratings, one conventionally ruled, the other holographically ruled. We have obtained photographic spectra with both gratings which indicate good resolution properties and promising efficiencies. 5 refs., 3 figs.

  11. COS/HST FUV Grating Shipping Container Handling Procedure Date: November 30, 1999

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    COS/HST FUV Grating Shipping Container Handling Procedure Date: November 30, 1999 Document Number University of Colorado Campus Box 593 Boulder, Colorado 80309 #12;REVISIONS Letter ECO No. Description Check. Wilkinson 11-30-99 The Center for Astrophysics and Space Astronomy Reviewed: COS/HST FUV Grating Shipping

  12. Design and fabrication of highly efficient electrooptic modulators using bragg grating reflectors

    E-Print Network [OSTI]

    Kim, Ryoung-Han

    2006-04-12T23:59:59.000Z

    Bragg grating reflectors etched in amorphous silicon overlay films have been integrated with Ti:LiNbO3 optical waveguides. With a 12.5 mm long grating segment and an etch depth of ~ 93 nm in a 105 nm-thick silicon film, a narrow (0.05 nm) spectral...

  13. Recombination Ghosts in Littrow Configuration: Implications for Spectrographs Using Volume Phase Holographic Gratings

    E-Print Network [OSTI]

    Eric B. Burgh; Matthew A. Bershady; Kyle B. Westfall; Kenneth H. Nordsieck

    2007-08-02T23:59:59.000Z

    We report the discovery of optical ghosts generated when using Volume Phase Holographic (VPH) gratings in spectrographs employing the Littrow configuration. The ghost is caused by light reflected off the detector surface, recollimated by the camera, recombined by, and reflected from, the grating and reimaged by the camera onto the detector. This recombination can occur in two different ways. We observe this ghost in two spectrographs being developed by the University of Wisconsin - Madison: the Robert Stobie Spectrograph for the Southern African Large Telescope and the Bench Spectrograph for the WIYN 3.5m telescope. The typical ratio of the brightness of the ghost relative to the integrated flux of the spectrum is of order 10^-4, implying a recombination efficiency of the VPH gratings of order 10^-3 or higher, consistent with the output of rigorous coupled wave analysis. Any spectrograph employing VPH gratings, including grisms, in Littrow configuration will suffer from this ghost, though the general effect is not intrinsic to VPH gratings themselves and has been observed in systems with conventional gratings in non-Littrow configurations. We explain the geometric configurations that can result in the ghost as well as a more general prescription for predicting its position and brightness on the detector. We make recommendations for mitigating the ghost effects for spectrographs and gratings currently built. We further suggest design modifications for future VPH gratings to eliminate the problem entirely, including tilted fringes and/or prismatic substrates. We discuss the resultant implications on the spectrograph performance metrics.

  14. First results from a next-generation off-plane X-ray diffraction grating

    E-Print Network [OSTI]

    McEntaffer, Randall; Schultz, Ted; Gantner, Brennan; Tutt, James; Holland, Andrew; O'Dell, Stephen; Gaskin, Jessica; Kolodziejczak, Jeffrey; Zhang, William W; Chan, Kai-Wing; Biskach, Michael; McClelland, Ryan; Iazikov, Dmitri; Wang, Xinpeng; Koecher, Larry

    2013-01-01T23:59:59.000Z

    Future NASA X-ray spectroscopy missions will require high throughput, high resolution grating spectrometers. Off-plane reflection gratings are capable of meeting the performance requirements needed to realize the scientific goals of these missions. We have identified a novel grating fabrication method that utilizes common lithographic and microfabrication techniques to produce the high fidelity groove profile necessary to achieve this performance. Application of this process has produced an initial pre-master that exhibits a radial (variable line spacing along the groove dimension), high density (>6000 grooves/mm), laminar profile. This pre-master has been tested for diffraction efficiency at the BESSY II synchrotron light facility and diffracts up to 55% of incident light into usable spectral orders. Furthermore, tests of spectral resolving power show that these gratings are capable of obtaining resolutions well above 1300 ($\\lambda/\\Delta\\lambda$) with limitations due to the test apparatus, not the gratings...

  15. Transient grating spectroscopy of SF6 molecular vibrations

    E-Print Network [OSTI]

    Ferr, Amlie; Burgy, Frdric; Dagan, Michal; Descamps, Dominique; Dudovich, Nirit; Petit, Stphane; Soifer, Hadas; Blanchet, Valrie; Mairesse, Yann

    2014-01-01T23:59:59.000Z

    Strong field transient grating spectroscopy has shown to be a very versatile tool in time-resolved molecular spectroscopy. Here we use this technique to investigate the high-order harmonic generation from SF6 molecules vibrationally excited by impulsive stimulated Raman scattering. Transient grating spectroscopy enables us to reveal clear modulations of the harmonic emission. This heterodyne detection shows that the harmonic emission generated between 14 to 26 eV is mainly sensitive to two among the three active Raman modes in SF6, i.e. the strongest and fully symmetric nu 1-A1g mode (774 cm-1, 43 fs) and the slowest mode nu5-T2g (524 cm-1, 63 fs). A time-frequency analysis of the harmonic emission reveals additional dynamics: the strength and central frequency of the nu 1 mode oscillate with a frequency of 52 cm-1 (640 fs). This could be a signature of the vibration of dimers in the generating medium. Harmonic 11 shows a remarkable behavior, oscillating in opposite phase, both on the fast (774 cm-1) and slow...

  16. High efficiency multilayer blazed gratings for EUV and soft X-rays: Recent developments

    SciTech Connect (OSTI)

    Voronov, Dmitriy; Ahn, Minseung; Anderson, Erik; Cambie, Rossana; Chang, Chih-Hao; Goray, Leonid; Gullikson, Eric; Heilmann, Ralf; Salmassi, Farhad; Schattenburg, Mark; Warwick, Tony; Yashchuk, Valeriy; Padmore, Howard

    2011-07-26T23:59:59.000Z

    Multilayer coated blazed gratings with high groove density are the best candidates for use in high resolution EUV and soft x-ray spectroscopy. Theoretical analysis shows that such a grating can be potentially optimized for high dispersion and spectral resolution in a desired high diffraction order without significant loss of diffraction efficiency. In order to realize this potential, the grating fabrication process should provide a perfect triangular groove profile and an extremely smooth surface of the blazed facets. Here we report on recent progress achieved at the Advanced Light Source (ALS) in fabrication of high quality multilayer coated blazed gratings. The blazed gratings were fabricated using scanning beam interference lithography followed by wet anisotropic etching of silicon. A 200 nm period grating coated with a Mo/Si multilayer composed with 30 bi-layers demonstrated an absolute efficiency of 37.6percent in the 3rd diffraction order at 13.6 nm wavelength. The groove profile of the grating was thoroughly characterized with atomic force microscopy before and after the multilayer deposition. The obtained metrology data were used for simulation of the grating efficiency with the vector electromagnetic PCGrate-6.1 code. The simulations showed that smoothing of the grating profile during the multilayer deposition is the main reason for efficiency losses compared to the theoretical maximum. Investigation of the grating with cross-sectional transmission electron microscopy revealed a complex evolution of the groove profile in the course of the multilayer deposition. Impact of the shadowing and smoothing processes on growth of the multilayer on the surface of the sawtooth substrate is discussed.

  17. Diamond-machined ZnSe immersion grating for NIR high-resolution spectroscopy

    SciTech Connect (OSTI)

    Ikeda, Y; Kobayashi, N; Kuzmenko, P J; Little, S L; Yasui, C; Kondo, S; Minami, A; Motohara, K

    2008-07-25T23:59:59.000Z

    ZnSe immersion gratings (n {approx} 2.45) provide the possibility of high-resolution spectroscopy for the near-infrared (NIR) region. Since ZnSe has a lower internal attenuation than other NIR materials, it is most suitable for immersion grating, particularly in short NIR region (0.8-1.4 {micro}m). We are developing an extremely high-resolution spectrograph with {lambda}/{Delta}{lambda} = 100,000, WINERED, customized for the short NIR region, using ZnSe (or ZnS) immersion grating. However, it had been very difficult to make fine grooves on ZnSe substrate with a small pitch of less than 50 {micro}m because ZnSe is a soft/brittle material. We have overcome this problem and successfully machined sharp grooves with fine pitch on ZnSe substrates by nano precision fly-cutting technique at LLNL. The optical testing of the sample grating with HeNe laser shows an excellent performance: the relative efficiency more than 87.4 % at 0.633 {micro}m for a classical grating configuration. The diffraction efficiency when used as an immersion grating is estimated to be more than 65 % at 1 {micro}m. Following this progress, we are about to start machining a grating on a large ZnSe prism with an entrance aperture of 23mm x 50mm and the blaze angle of 70{sup o}.

  18. Performance Testing of a Novel Off-plane Reflection Grating and Silicon Pore Optic Spectrograph at PANTER

    E-Print Network [OSTI]

    Marlowe, Hannah; Allured, Ryan; DeRoo, Casey; Miles, Drew M; Donovan, Benjamin D; Tutt, James H; Burwitz, Vadim; Menz, Benedikt; Hartner, Gisela D; Smith, Randall K; Gnther, Ramses; Yanson, Alex; Vacanti, Giuseppe; Ackermann, Marcelo

    2015-01-01T23:59:59.000Z

    An X-ray spectrograph consisting of radially ruled off-plane reflection gratings and silicon pore optics was tested at the Max Planck Institute for extraterrestrial Physics PANTER X-ray test facility. The silicon pore optic (SPO) stack used is a test module for the Arcus small explorer mission, which will also feature aligned off-plane reflection gratings. This test is the first time two off-plane gratings were actively aligned to each other and with a SPO to produce an overlapped spectrum. The gratings were aligned using an active alignment module which allows for the independent manipulation of subsequent gratings to a reference grating in three degrees of freedom using picomotor actuators which are controllable external to the test chamber. We report the line spread functions of the spectrograph and the actively aligned gratings, and plans for future development.

  19. Improvement of Laser Damage Resistance and Diffraction Efficiency of Multilayer Dielectric Diffraction Gratings by HF-Etchback Linewidth Tailoring

    SciTech Connect (OSTI)

    Nguyen, H T; Larson, C C; Britten, J A

    2010-10-28T23:59:59.000Z

    Multilayer dielectric (MLD) diffraction gratings for Petawatt-class laser systems possess unique laser damage characteristics. Details of the shape of the grating lines and the concentration of absorbing impurities on the surface of the grating structures both have strong effects on laser damage threshold. It is known that electric field enhancement in the solid material comprising the grating lines varies directly with the linewidth and inversely with the line height for equivalent diffraction efficiency. Here, they present an overview of laser damage characteristics of MLD gratings, and describe a process for post-processing ion-beam etched grating lines using very dilute buffered hydrofluoric acid solutions. This process acts simultaneously to reduce grating linewidth and remove surface contaminants, thereby improving laser damage thresholds through two pathways.

  20. Coherent radiation from neutral molecules moving above a grating

    E-Print Network [OSTI]

    Alexey Belyanin; Federico Capasso; Vitaly Kocharovsky; Vladimir Kocharovsky

    2001-10-10T23:59:59.000Z

    We predict and study the quantum-electrodynamical effect of parametric self-induced excitation of a molecule moving above the dielectric or conducting medium with periodic grating. In this case the radiation reaction force modulates the molecular transition frequency which results in a parametric instability of dipole oscillations even from the level of quantum or thermal fluctuations. The present mechanism of instability of electrically neutral molecules is different from that of the well-known Smith-Purcell and transition radiation in which a moving charge and its oscillating image create an oscillating dipole. We show that parametrically excited molecular bunches can produce an easily detectable coherent radiation flux of up to a microwatt.

  1. Efficiency and stray light measurements and calculations of diffraction gratings for the Advanced Light Source

    SciTech Connect (OSTI)

    McKinney, W.R.; Mossessian, D. (Accelerator and Fusion Research Division, Advanced Light Source, Lawrence Berkeley Laboratory, Berkeley, California 94720 (United States)); Gullikson, E. (Materials Sciences Division, Center for X-ray Optics, Lawrence Berkeley Laboratory, Berkeley, California 94720 (United States)); Heimann, P. (Accelerator and Fusion Research Division, Advanced Light Source, Lawrence Berkeley Laboratory, Berkeley, California 94720 (United States))

    1995-02-01T23:59:59.000Z

    Water-cooled gratings manufactured for spherical grating monochromators of the Advanced Light Source beamlines 7.0, 8.0, and 9.0 were measured with the laser plasma source and reflectometer in the Center for X-ray Optics at Lawrence Berkeley Laboratory. The square-wave gratings are ion milled into the polished electroless nickel surface after patterning by holographic photolithography. Absolute efficiency data are compared with exact electromagnetic theory calculation. Interorder stray light and groove depths can be estimated from the measurements.

  2. Efficiency and stray light measurements and calculations of diffraction gratings for the ALS

    SciTech Connect (OSTI)

    McKinney, W.R.; Mossessian, D.; Gullikson, E.; Heimann, P.

    1994-07-01T23:59:59.000Z

    Water cooled gratings manufactured for spherical grating monochromators of the Advanced Light Source beamlines 7.0, 8.0 and 9.0 were measured with the laser plasma source and reflectometer in the Center for X-ray Optics at LBL. The square-wave gratings are ion-milled into the polished electroless nickel surface after patterning by holographic photolithography. Absolute efficiency data are compared with exact electromagnetic theory calculation. Inter-order stray light and groove depths can be estimated from the measurements.

  3. anagin Forests because Carbon Matters: In grating Energy, Products, and Land

    E-Print Network [OSTI]

    Fried, Jeremy S.

    -have the potential 10 increase biomass supply. Unlike metals, concrete, and plastic, forest products store carbon sources. Expanding forest biomass use for biofuels and energy generation will competeanagin Forests because Carbon Matters: In grating Energy, Products, and Land Management Policy

  4. System and technique for characterizing fluids using ultrasonic diffraction grating spectroscopy

    DOE Patents [OSTI]

    Greenwood, Margaret S. (Richland, WA)

    2008-07-08T23:59:59.000Z

    A system for determining property of multiphase fluids based on ultrasonic diffraction grating spectroscopy includes a diffraction grating on a solid in contact with the fluid. An interrogation device delivers ultrasound through the solid and a captures a reflection spectrum from the diffraction grating. The reflection spectrum exhibits peaks whose relative size depends on the properties of the various phases of the multiphase fluid. For example, for particles in a liquid, the peaks exhibit dependence on the particle size and the particle volume fraction. Where the exact relationship is know know a priori, data from different peaks of the same reflection spectrum or data from the peaks of different spectra obtained from different diffraction gratings can be used to resolve the size and volume fraction.

  5. Point source in a phononic grating: stop bands give rise to phonon-focusing caustics

    E-Print Network [OSTI]

    Maznev, Alex

    We use locally-excited gigahertz surface phonon wavepackets in microscopic line structures of different pitches to reveal profound anisotropy in the radiation pattern of a point source in a grating. Time-domain data obtained ...

  6. Spatial Filter with Volume Gratings for High-peak-power Multistage Laser Amplifiers

    E-Print Network [OSTI]

    Tan, Yi-zhou; Zheng, Guang-wei; Shen, Ben-jian; Pan, Heng-yue; Li, Liu

    2012-01-01T23:59:59.000Z

    The regular spatial filters comprised of lens and pinhole are essential component in high power laser systems, such as lasers for inertial confinement fusion, nonlinear optical technology and directed-energy weapon. On the other hand the pinhole is treated as a bottleneck of high power laser due to harmful plasma created by the focusing beam. In this paper we present a spatial filter based on angular selectivity of Bragg diffraction grating to avoid the harmful focusing effect in the traditional pinhole filter. A spatial filter consisted of volume phase gratings in two-pass amplifier cavity were reported. Two-dimensional filter was proposed by using single Pi-phase-shifted Bragg grating, numerical simulation results shown that its angular spectrum bandwidth can be less than 160urad. The angular selectivity of photo-thermo-refractive glass and RUGATE film filters, construction stability, thermal stability and the effects of misalignments of gratings on the diffraction efficiencies under high-pulse-energy laser...

  7. The Chandra High Energy Transmission Grating: Design, Fabrication, Ground Calibration and Five Years in Flight

    E-Print Network [OSTI]

    Canizares, Claude R.

    Details of the design, fabrication, and ground and flight calibration of the High Energy Transmission Grating (HETG) on the Chandra X?Ray Observatory are presented after 5 years of flight experience. Specifics include the ...

  8. Design and fabrication of highly efficient electrooptic modulators using bragg grating reflectors

    E-Print Network [OSTI]

    Kim, Ryoung-Han

    2006-04-12T23:59:59.000Z

    -directional coupling that includes an attenuation coefficient. The Bragg grating spectral characteristics are exploited to fabricate distributed Bragg feedback modulators (DBFM) and Bragg reflector Fabry-Perot modulators (BFPM). The sharp cut-off in transmission...

  9. Broadband tunability of gain-flattened quantum well semiconductor lasers with an external grating

    SciTech Connect (OSTI)

    Mittelstein, M.; Mehuys, D.; Yariv, A.; Ungar, J.E.; Sarfaty, R.

    1989-03-20T23:59:59.000Z

    Quantum well lasers are shown to exhibit flattened broadband gain spectra at a particular pumping condition. The gain requirement for a grating-tuned external cavity configuration is examined and applied to a semiconductor quantum well laser with an optimized length of gain region. The predicted very broadband tunability of quantum well lasers is confirmed experimentally by grating-tuning of uncoated lasers over 85 nm, with single longitudinal mode output power exceeding 200 mW.

  10. Twenty-channel grating polychromator diagnostic system for electron cyclotron emission measurement in JT-60

    SciTech Connect (OSTI)

    Ishida, S.; Nagashima, A.; Sato, M.; Isei, N.; Matoba, T. (Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka-gun, Naka-machi, Ibaraki-ken (Japan))

    1990-10-01T23:59:59.000Z

    A twenty-channel grating polychromator diagnostic system has been built to measure the temporal evolution of local electron temperatures in JT-60. A cross Czerny--Turner diffraction grating spectrometer is utilized for the measurement of second-harmonic electron cyclotron emission with extraordinary modes in the range 85--300 GHz, in which a grating plate grooved on both faces with different grating periods is applied effectively to yield a wide coverage for the toroidal fields. The grating angle is automatically set up by control of a stepping motor according to the relation of the grating equation. The diffracted light is detected by 20 indium-antimonide hot-electron bolometers cooled at 4.3 K in a modified Solvay cycle cryogenic refrigerator. A typical resolving power of the instrument was measured to be {lambda}/{Delta}{lambda}{approximately}130, providing a spatial resolution of 2.3 cm at the plasma center. The transmission line over {approximately}38 m long is composed of oversized {ital S}-band waveguides. The total transmissivity of this system is estimated to be {approximately}0.01.

  11. Experimental observation of acoustic sub-harmonic diffraction by a grating

    SciTech Connect (OSTI)

    Liu, Jingfei, E-mail: benjamin.jf.liu@gatech.edu; Declercq, Nico F., E-mail: declercqdepatin@gatech.edu [Laboratory for Ultrasonic Nondestructive Evaluation LUNE, Georgia Tech Lorraine, Georgia Tech-CNRS UMI2958, Georgia Institute of Technology, 2, rue Marconi, Metz 57070 (France)

    2014-06-28T23:59:59.000Z

    A diffraction grating is a spatial filter causing sound waves or optical waves to reflect in directions determined by the frequency of the waves and the period of the grating. The classical grating equation is the governing principle that has successfully described the diffraction phenomena caused by gratings. However, in this work, we show experimental observation of the so-called sub-harmonic diffraction in acoustics that cannot be explained by the classical grating equation. Experiments indicate two physical phenomena causing the effect: internal scattering effects within the corrugation causing a phase shift and nonlinear acoustic effects generating new frequencies. This discovery expands our current understanding of the diffraction phenomenon, and it also makes it possible to better design spatial diffraction spectra, such as a rainbow effect in optics with a more complicated color spectrum than a traditional rainbow. The discovery reveals also a possibly new technique to study nonlinear acoustics by exploitation of the natural spatial filtering effect inherent to an acoustic diffraction grating.

  12. Simple formula for the interspaces of periodic grating structures self-organized on metal surfaces by femtosecond laser ablation

    SciTech Connect (OSTI)

    Hashida, Masaki; Ikuta, Yoshinobu; Miyasaka, Yasuhiro; Tokita, Shigeki; Sakabe, Shuji [ARCBS, Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan and Department of Physics, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo, Kyoto 606-8502 (Japan)] [ARCBS, Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan and Department of Physics, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo, Kyoto 606-8502 (Japan)

    2013-04-29T23:59:59.000Z

    Self-organized grating structures formed on Mo and Ti metal surfaces irradiated with femtosecond laser pulses at wavelengths of 800 and 400 nm are investigated by electron microscopy. We observe the formation of the self-organized grating structures on the metals irradiated with 400-nm laser pulses at low laser fluence in narrow fluence ranges. The interspaces of the grating structure depend on the wavelength and fluence of the laser. We find that the dependence of the grating interspaces on laser fluence can be explained by a simple formula for induction of a surface-plasma wave through the parametric decay of laser light.

  13. Short pulse laser stretcher-compressor using a single common reflective grating

    DOE Patents [OSTI]

    Erbert, Gaylen V.; Biswal, Subrat; Bartolick, Joseph M.; Stuart, Brent C.; Telford, Steve

    2004-05-25T23:59:59.000Z

    The present invention provides an easily aligned, all-reflective, aberration-free pulse stretcher-compressor in a compact geometry. The stretcher-compressor device is a reflective multi-layer dielectric that can be utilized for high power chirped-pulse amplification material processing applications. A reflective grating element of the device is constructed: 1) to receive a beam for stretching of laser pulses in a beam stretcher beam path and 2) to also receive stretched amplified pulses to be compressed in a compressor beam path through the same (i.e., common) reflective multilayer dielectric diffraction grating. The stretched and compressed pulses are interleaved about the grating element to provide the desired number of passes in each respective beam path in order to achieve the desired results.

  14. Binary Pseudo-random Grating Standard for Calibration of Surface Profilometers

    SciTech Connect (OSTI)

    Yashchuk, Valeriy; Yashchuk, Valeriy V.; McKinney, Wayne R.; Takacs, Peter Z.

    2008-01-16T23:59:59.000Z

    We suggest and describe the use of a binary pseudo-random (BPR) grating as a standard test surface for measurement of the modulation transfer function (MTF) of interferometric microscopes. Knowledge of the MTF of a microscope is absolutely necessary to convert the measured height distribution of a surface undergoing metrology into an accurate power spectral density (PSD) distribution. For an'ideal' microscope with an MTF function independent of spatial frequency out to the Nyquist frequency of the detector array with zero response at higher spatial frequencies, a BPR grating would produce a flat 1D PSD spectrum, independent of spatial frequency. For a'real' instrument, the MTF is found as the square root of the ratio of the PSD spectrum measured with the BPR grating to the'ideal,' spatial frequency independent, PSD spectrum. We present the results from a measurement of the MTF of MicromapTM-570 interferometric microscope demonstrating a high efficiency for the calibration method.

  15. Effective Absorption Enhancement in Small Molecule Organic Solar Cells by Employing Trapezoid Gratings

    E-Print Network [OSTI]

    Chun-Ping, Xiang; Yu, Jin; Bin-Zong, Xu; Wei-Min, Wang; Xin, Wei; Guo-Feng, Song; Yun, Xu

    2013-01-01T23:59:59.000Z

    We demonstrate the optical absorption has been enhanced in the small molecule organic solar cells by employing trapezoid grating structure. The enhanced absorption is mainly attributed to both waveguide modes and surface plasmon modes, which has been simulated by using finite-difference time-domain method. The simulated results show that the surface plasmon along the semitransparent metallic Ag anode is excited by introducing the periodical trapezoid gratings, which induce high intensity field increment in the donor layer. Meanwhile, the waveguide modes result a high intensity field in acceptor layer. The increment of field improves the absorption of organic solar cells, significantly, which has been demonstrated by simulating the electrical properties. The simulated results exhibiting 31 % increment of the short-circuit current has been achieved in the optimized device, which is supported by the experimental measurement. The power conversion efficiency of the grating sample obtained in experiment exhibits an...

  16. Plasmon Absorption in grating-coupled InP HEMT and Graphene sheet for tunable THz Detection

    E-Print Network [OSTI]

    Peale, Robert E.

    Plasmon Absorption in grating-coupled InP HEMT and Graphene sheet for tunable THz Detection Nima Tunable resonant absorption by plasmons in the two-dimensional electron gas (2DEG) of grating-gated In-portable or space-based spectral-sensing applications. Keywords: HEMT, Plasmon, terahertz, Graphene, 2DEG 1

  17. A planar lightwave circuit based micro interrogator and its applications to the interrogation of multiplexed optical fiber Bragg grating sensors

    E-Print Network [OSTI]

    Yao, Jianping

    of multiplexed optical fiber Bragg grating sensors Gaozhi Xiao a,*, Nezih Mrad b , Honglei Guo c , Zhiyi Zhang Accepted 20 August 2008 Keywords: Micro interrogator Fiber Bragg grating sensors a b s t r a c t Optical have developed a micro optical sensor interrogator using a monolithically integrated planar lightwave

  18. Mathematical Modeling and Experimental Study of Biomass Combustion in a Thermal 108 MW Grate-Fired Boiler

    E-Print Network [OSTI]

    Rosendahl, Lasse

    Mathematical Modeling and Experimental Study of Biomass Combustion in a Thermal 108 MW Grate used to fire biomass for heat and power production. However, grate-firing systems are often reported and modernized. This paper presents the efforts toward a reliable baseline computational fluid dynamics (CFD

  19. Design of a grating for studying Smith-Purcell radiation and electron acceleration

    SciTech Connect (OSTI)

    Fernow, R.C.

    1989-01-01T23:59:59.000Z

    We describe work on the design of a diffraction grating which we intend to use for studying the production of Smith-Purcell radiation and the acceleration of electrons. We have developed computer codes based on the solution of the appropriate Maxwell's equations. A specific grating profile is given which is feasible to construct and which supports enhanced surface accelerating modes. We examine the possibility of using the Smith-Purcell effect to make a beam position monitor. 13 refs., 10 figs., 2 tabs.

  20. Creating and controlling overlap in two-layer networks. Application to a mean-field SIS epidemic model with awareness dissemination

    E-Print Network [OSTI]

    Juher, David

    2015-01-01T23:59:59.000Z

    We study the properties of the potential overlap between two networks $A,B$ sharing the same set of $N$ nodes (a two-layer network) whose respective degree distributions $p_A(k), p_B(k)$ are given. Defining the overlap coefficient $\\alpha$ as the Jaccard index, we derive upper bounds for the minimum and maximum overlap coefficient in terms of $p_A(k)$, $p_B(k)$ and $N$. We also present an algorithm based on cross-rewiring of links to obtain a two-layer network with any prescribed $\\alpha$ inside the permitted range. Finally, to illustrate the importance of the overlap for the dynamics of interacting contagious processes, we derive a mean-field model for the spread of an SIS epidemic with awareness against infection over a two-layer network, containing $\\alpha$ as a parameter. A simple analytical relationship between $\\alpha$ and the basic reproduction number follows. Stochastic simulations are presented to assess the accuracy of the upper bounds of $\\alpha$ and the predictions of the mean-field epidemic model...

  1. Surface plasmon polaritons locally excited on the ridges of metallic gratings

    E-Print Network [OSTI]

    Boyer, Edmond

    Surface plasmon polaritons locally excited on the ridges of metallic gratings B. Wang*, and P the surface plasmon polaritons that are locally excited on the ridges (between the indentations) of metallic by an intuitive microscopic model that shines new light on the role of surface plasmons in the transmission

  2. All-optical switching with 1-ps response time in a DDMEBT enabled silicon grating

    E-Print Network [OSTI]

    Chen, Ray

    -order nonlinear optical material DDMEBT was spun onto silicon chips for the first time, filling 80 nm lithographic devices; (130.3130) Integrated optics materials; (230.5750) Resonators; (050.2770) Gratings. References, "A High-Optical Quality Supramolecular Assembly for Third-Order Integrated Nonlinear Optics," Adv

  3. High-order harmonic transient grating spectroscopy of SF6 molecular vibrations Amelie Ferre1

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    High-order harmonic transient grating spectroscopy of SF6 molecular vibrations Amelie Ferre1. Here we use this technique to investigate the high-order harmonic genera- tion from SF6 molecules emission generated between 14 to 26 eV is mainly sensitive to two among the three active Raman modes in SF6

  4. High-power laser beam control by PTR Bragg gratings Igor Ciapurin(1)

    E-Print Network [OSTI]

    Glebov, Leon

    High-power laser beam control by PTR Bragg gratings Igor Ciapurin(1) , Vadim Smirnov(1,2) , George is a photo-thermo-refractive (PTR) glass, and used for high-power laser beam control. Exceptionally narrow. The computer controlled recording setup allowed controlling input angles with accuracy better then 0.25 mrad

  5. Enhanced efficiency of thin film solar cells using a shifted dual grating plasmonic structure

    E-Print Network [OSTI]

    Levy, Uriel

    .5403) Plasmonics; (310.2790) Guided waves. References and links 1. O. Morton, "Solar energy: A new day dawning Society of America OCIS codes: (350.6050) Solar energy; (050.2770) Gratings; (310.0310) Thin films; (250? Silicon valley sunrise," Nature 443(7107), 1922 (2006). 2. M. A. Green and S. Pillai, "Harnessing

  6. Quenched by ice: Transient grating measurements of vibronic dynamics in bromine-doped ice

    E-Print Network [OSTI]

    Apkarian, V. Ara

    Quenched by ice: Transient grating measurements of vibronic dynamics in bromine-doped ice I. U April 2006; published online 25 May 2006 In both water and in ice, the absorption spectra of bromine of the trapped molecule in its electronic B 3 0u state in ice. Independent of the initial excitation energy

  7. Plasmonic backcontact grating for P3HT:PCBM organic solar cells enabling strong optical

    E-Print Network [OSTI]

    Demir, Hilmi Volkan

    . Lyubovskaya, G. Gobsch, N. S. Sariciftci, and V. F. Razumov, "Material solubility-photovoltaic performance; (050.2770) Gratings; (040.5350) Photovoltaic; (350.6050) Solar energy. References and links 1. P. A-enhanced charge carrier generation in organic photovoltaic films using silver nanoprisms," Nano Lett. 10(4), 1501

  8. Municipal Solid Waste as an Energy Source by Roller-Grate Incineration

    E-Print Network [OSTI]

    Karnoski, P. J.

    1979-01-01T23:59:59.000Z

    The Grumman/VKW (Duesseldorf) Roller-Grate System was developed specifically to mass-burn municipal solid wastes achieving efficient combustion by a rolling and mixing action of the fuel bed, and independent control of primary air and roller speed...

  9. Liquid Resin Infusion process monitoring with superimposed Fibre Bragg Grating sensor

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    1 Liquid Resin Infusion process monitoring with superimposed Fibre Bragg Grating sensor Emmanuel Resin Infusion (LRI) , with the FBG/LPG sensor embedded in a composite part. Dielectric analysis the material and the structure. Among the various composite manufacturing processes, Liquid Resin Infusion (LRI

  10. Experimental observation of a traveling plasma grating formed by two crossing filaments in gases

    SciTech Connect (OSTI)

    Durand, Magali [Laboratoire d'Optique Appliquee, ENSTA ParisTech-Ecole Polytechnique-CNRS, 91761 Palaiseau (France); ONERA, Chemin de la Huniere, 91761 Palaiseau (France); Liu Yi; Forestier, Benjamin; Houard, Aurelien; Mysyrowicz, Andre [Laboratoire d'Optique Appliquee, ENSTA ParisTech-Ecole Polytechnique-CNRS, 91761 Palaiseau (France)

    2011-03-21T23:59:59.000Z

    The spatial motion and effective duration of a traveling plasma grating formed by two interfering femtosecond laser filaments in gases is characterized by its Doppler effect imparted on a probe pulse. The shift velocity determined experimentally agrees with the theoretical calculations.

  11. Dispersion characteristics of three-dimensional dielectric-loaded grating for terahertz Smith-Purcell radiation

    SciTech Connect (OSTI)

    Cao, Miaomiao, E-mail: mona486@yeah.net; Li, Ke, E-mail: like3714@163.com [Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190 (China) [Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190 (China); University of Chinese Academy of Sciences, Beijing 100049 (China); Liu, Wenxin, E-mail: lwenxin@mail.ie.ac.cn; Wang, Yong, E-mail: wangyong3845@sina.com [Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190 (China)] [Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190 (China)

    2014-02-15T23:59:59.000Z

    In this paper, a dielectric-loaded grating for Smith-Purcell device is proposed. The three-dimensional (3D) analytical theory for hot dispersion relation is obtained by using field matched method, which is solved by numerical simulations. The first and second order growth rates for the proposal model are analyzed, which is obtained by expanding hot dispersion equation at the operating point. The results show that the dispersion can be effectively weakened by introducing dielectric-loaded grating, in which the cutoff frequency is affected by the grating thickness. The dispersion curve becomes flatter and shifts towards lower frequency at the optimum grating parameters. The 3D particle-in-cell (PIC) simulation is also performed and the results are in good agreement with theoretical calculations. Comparing the first order growth rate with the second one, it reveals that the discrepancy is small when electron beam parameters are selected with small values. Otherwise, the discrepancy is large and cannot be ignored. To accurately describe the process of beam-wave interaction, the second order growth rate is necessary to apply.

  12. Investigation of long-period fiber gratings induced by high-intensity femtosecond UV laser pulses

    E-Print Network [OSTI]

    Nikogosyan, David N.

    efficiency with that for other existing meth- ods of recording. We studied the temperature sensing properties changes in the fiber core induced by thermal heating, were developed. They include the use of a CO2 laserInvestigation of long-period fiber gratings induced by high-intensity femtosecond UV laser pulses

  13. Design of a full silica pulse compression grating Nicolas Bonod,1

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    is numerically studied for the compression of ultra-short pulses. The silica is therefore the only solid material are used in the compression of ultra-short pulses amplified by the so-called frequency drift method laser induced damage threshold. In comparison to gratings engraved on a dielectric stack (MLD

  14. Wire-grid diffraction gratings used as polarizing beam splitter for

    E-Print Network [OSTI]

    Wire-grid diffraction gratings used as polarizing beam splitter for visible light and applied of wire grid polarizers as efficient polarizing beam splitters for visible light is studied. The large of wire-grid polarizers in liquid crystal on silicon display systems is considered. 2005 Optical Society

  15. Picosecond polarization-selective transient grating experiments in sodium-seeded flames

    E-Print Network [OSTI]

    Fayer, Michael D.

    techniques such as coherent anti-Stokes Raman scattering (CARS) ,2V3laser induced fluorescence (LIF),4 the laser beams (CARS and FWM), of a different frequency than some or all of the laser beams (LIF, CARS) Electric field picture for one fringe of an intensity grating. The electric field amplitude varies

  16. Tiled-Grating Compressor with Uncompensated Dispersion for Near-Field-Intensity Smoothing

    SciTech Connect (OSTI)

    Huang, H.; Kessler, T.J.

    2007-07-02T23:59:59.000Z

    A tiled-grating compressor, in which the spatial dispersion is not completely compensated, reduces the near-field-intensity modulation caused by tiling gaps and provides near-field spatial filtering of the input laser beam, thus reducing the laser damage to the final optics.

  17. Design and analysis of the reflection grating arrays for the X-Ray Multi-Mirror Mission (XMM)

    SciTech Connect (OSTI)

    Atkinson, D.P.; Bixler, J.V.; Geraghty, P.; Hailey, C.J.; Klingmann, J.; Montesanti, R.C. (Lawrence Livermore National Lab., CA (USA)); Kahn, S.M.; Paerels, F.B.S. (California Univ., Berkeley, CA (USA))

    1990-06-01T23:59:59.000Z

    The Reflection Grating Spectrometer Experiment (RGS), which has been selected for flight on the European Space Agency's X-ray Multi-Mirror Mission (XMM), includes two arrays of reflection gratings that are placed in the X-ray optical path behind two separate grazing incidence X-ray telescopes. Each of the gratings arrays picks off roughly half the X-ray light emanating from its telescope and diffracts it to a dedicated strip of charge-coupled device (CCD) detectors offset from the telescope focal plane. The arrays contain 224 100 mm X 200 mm gratings, each mounted at a graze angle of 1.58{degree} to the incident beam. The gratings are produced by epoxy replication of a common master onto very thin substrates. Both the gratings and the detector are mounted on a Rowland circle which also includes the telescope focus. In this paper, we review the current state of both the engineering and the optical designs for the grating arrays. 4 refs., 9 figs.

  18. Effect of plasmonic losses on light emission enhancement in quantum-wells coupled to metallic gratings

    SciTech Connect (OSTI)

    Sadi, Toufik; Oksanen, Jani; Tulkki, Jukka [Department of Biomedical Engineering and Computational Sciences, Aalto University, P.O. Box 12200, FI-00076 Aalto (Finland)

    2013-12-14T23:59:59.000Z

    Recent experimental work has shown significant luminescence enhancement from near-surface quantum-well (QW) structures using metallic grating to convert surface plasmon (SP) modes into radiative modes. This work introduces a detailed theoretical study of plasmonic losses and the role of SPs in improving light extraction from grated light-emitting QW structures, using the fluctuational electrodynamics method. The method explains experimental results demonstrating emission enhancement, light scattering, and plasmonic coupling in the structures. We study these effects in angle-resolved reflectometry and luminescence setups in InGaN QW structures with silver grating. In contrast to experiments, our model allows direct calculation of the optical losses. The model predicts that the plasmonic coupling and scattering increases light emission by a factor of up to three compared to a flat semiconductor structure. This corresponds to reducing the absorption losses from approximately 93% in the ungrated metallic structure to 75% in the grated structure. Lower losses are associated with a significant emission enhancement enabled by the SPs of silver/GaN interfaces, which are present in the blue/green wavelength range, and can be optimized by carefully nanostructuring the metal layer and by the positioning of the QW. In general, the enhancement results from the interplay of mode scattering, conversion of SP energy directly into light, and losses in the metallic grating. The reported losses are very high when compared to the losses present in modern light-emitting diodes (LEDs). Albeit, our work provides tools needed for further optimization of plasmonic light extraction, eventually leading to highly efficient LEDs.

  19. A novel millimeter-wave beam-steering technique using a dielectric-image-line-fed grating film

    E-Print Network [OSTI]

    Rodenbeck, Christopher Timothy

    2001-01-01T23:59:59.000Z

    This thesis introduces a novel, broadband, low-cost technique for beam steering at millimeter-wave frequencies using a moveable grating film fed by dielectric image line. An excellent radiation pattern is maintained over wide scan angles across...

  20. Fabrication of high-throughput critical-angle X-ray transmission gratings for wavelength-dispersive spectroscopy

    E-Print Network [OSTI]

    Bruccoleri, Alexander Robert

    2013-01-01T23:59:59.000Z

    The development of the critical-angle transmission (CAT) grating seeks both an order of magnitude improvement in the effective area, and a factor of three increase in the resolving power of future space-based, soft x-ray ...

  1. Design and analysis of a scanning beam interference lithography system for patterning gratings with nanometer-level distortions

    E-Print Network [OSTI]

    Konkola, Paul Thomas, 1973-

    2003-01-01T23:59:59.000Z

    This thesis describes the design and analysis of a system for patterning large-area gratings with nanometer level phase distortions. The novel patterning method, termed scanning beam interference lithography (SBIL), uses ...

  2. Polarization-resolved sensing with tilted fiber Bragg gratings: theory and limits of detection

    E-Print Network [OSTI]

    Bialiayeu, Aliaksandr; Albert, Jacques

    2015-01-01T23:59:59.000Z

    Polarization based sensing with tilted fiber Bragg grating (TFBG) sensors is analysed theoretically by two alternative approaches. The first method is based on tracking the grating transmission for two orthogonal states of linear polarized light that are extracted from the measured Jones matrix or Stokes vectors of the TFBG transmission spectra. The second method is based on the measurements along the system principle axes and polarization dependent loss (PDL) parameter, also calculated from measured data. It is shown that the frequent crossing of the Jones matrix eigenvalues as a function of wavelength leads to a non-physical interchange of the calculated principal axes; a method to remove this unwanted mathematical artefact and to restore the order of the system eigenvalues and the corresponding principal axes is provided. A comparison of the two approaches reveals that the PDL method provides a smaller standard deviation and therefore lower limit of detection in refractometric sensing. Furthermore, the pol...

  3. Photorefractive gratings formed in a Fe : CdTe crystal by nanosecond laser pulses

    SciTech Connect (OSTI)

    Borshch, A A; Brodin, M S; Volkov, V I; Rudenko, V I [Institute of Physics, National Academy of Sciences of Ukraine, Kiev (Ukraine)

    1998-01-31T23:59:59.000Z

    An investigation was made of photorefractive gratings formed by nanosecond laser pulses in an Fe-doped CdTe crystal. Pulsed pumping ({lambda}=1.06 {mu}m, {tau}{sub p}=10 ns) with the maximum gain coefficient {Gamma}=0.3 cm{sup -1} induced a fast photorefractive effect in this crystal, characterised by a high electron mobility ({mu}{sub e}=1500 cm{sup 2} V{sup -1} s{sup -1}). The orientational dependences of the gain coefficient, and its dependences on the grating period and on the intensity of the recording radiation, were used to calculate the Debye screening length, the effective concentration of the carrier traps, and other parameters of the investigated crystal, including the ambipolar conduction coefficient taking account of the competition from the minority carriers. (nonlinear optical phenomena and devices)

  4. Three-dimensional theory of Smith-Purcell free-electron laser with dielectric loaded grating

    SciTech Connect (OSTI)

    Cao, Miaomiao, E-mail: mona486@yeah.net; Li, Ke, E-mail: like3714@163.com [Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190 (China); University of Chinese Academy of Sciences, School of Electronic Science and Technology, Beijing 100049 (China); Liu, Wenxin, E-mail: lwenxin@mail.ie.ac.cn; Wang, Yong, E-mail: wangyong3845@sina.com [Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190 (China)

    2014-09-14T23:59:59.000Z

    A dielectric loaded rectangular grating for Smith-Purcell devices is proposed in this paper. Regarding the electron beam as a moving plasma dielectric, a three dimensional (3D) linear theory of beam-wave interaction is developed. The first and second order growth rates are calculated, which are obtained by expanding hot dispersion equation at synchronous point. The results show that the cutoff frequency is affected by grating width. The dispersion curve becomes flatter and shifts towards lower frequency by loading dielectric in grooves. The simulation results, which are obtained by a 3D particle-in-cell code, are in good agreement with theoretical calculations. Compared the first and second order growth rate, it shows that the discrepancy is large when beam parameters are selected with high values. In this case, it is necessary to apply the second order growth rate, which can accurately describe the process of beam-wave interaction.

  5. Narrow band wavelength selective filter using grating assisted single ring resonator

    SciTech Connect (OSTI)

    Prabhathan, P., E-mail: PPrabhathan@ntu.edu.sg; Murukeshan, V. M. [Centre for Optical and Laser Engineering (COLE), School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore)

    2014-09-15T23:59:59.000Z

    This paper illustrates a filter configuration which uses a single ring resonator of larger radius connected to a grating resonator at its drop port to achieve single wavelength selectivity and switching property with spectral features suitable for on-chip wavelength selection applications. The proposed configuration is expected to find applications in silicon photonics devices such as, on-chip external cavity lasers and multi analytic label-free biosensors. The grating resonator has been designed for a high Q-factor, high transmittivity, and minimum loss so that the wavelength selectivity of the device is improved. The proof-of-concept device has been demonstrated on a Silicon-on-Insulator (SOI) platform through electron beam lithography and Reactive Ion Etching (RIE) process. The transmission spectrum shows narrow band single wavelength selection and switching property with a high Free Spectral Range (FSR) ?60 nm and side band rejection ratio >15 dB.

  6. Phase-space properties of magneto-optical traps utilising micro-fabricated gratings

    E-Print Network [OSTI]

    McGilligan, James P; Riis, Erling; Arnold, Aidan S

    2015-01-01T23:59:59.000Z

    We have used diffraction gratings to simplify the fabrication, and dramatically increase the atomic collection efficiency, of magneto-optical traps using micro-fabricated optics. The atom number enhancement was mainly due to the increased beam capture volume, afforded by the large area (4cm^2) shallow etch (200nm) binary grating chips. Here we provide a detailed theoretical and experimental investigation of the on-chip magneto-optical trap temperature and density in four different chip geometries using 87Rb, whilst studying effects due to MOT radiation pressure imbalance. With optimal initial MOTs on two of the chips we obtain both large atom number (2x10^7) _and_ sub-Doppler temperatures (50uK) after optical molasses.

  7. Master dye laser oscillator including a specific grating assembly for use therein

    DOE Patents [OSTI]

    Davin, J.M.

    1992-09-01T23:59:59.000Z

    A dye laser oscillator for producing a tuned dye beam is disclosed herein and includes, among other components, a beam output coupling assembly, a dye cell assembly, a beam expander assembly, an etalon assembly, and a grating assembly. Each of three assemblies is vertically supported from a horizontal base so as to be readily removable from the base without interference from or interfering with the other assemblies. The particular grating assembly disclosed is specifically designed for proper optical alignment with the intended path of the dye beam to be produced and for accurate pivotal movement relative to the beam path in order to function as a coarse tuning mechanism in the production of the ultimately tuned beam. 5 figs.

  8. Cascading metallic gratings for broadband absorption enhancement in ultrathin plasmonic solar cells

    SciTech Connect (OSTI)

    Wen, Long; Sun, Fuhe [Key Laboratory of Nanodevices and Applications-CAS and Collaborative Innovation Center of Suzhou Nano Science and Technology, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences (CAS), Suzhou 215123 (China); Chen, Qin, E-mail: qchen2012@sinano.ac.cn [Key Laboratory of Nanodevices and Applications-CAS and Collaborative Innovation Center of Suzhou Nano Science and Technology, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences (CAS), Suzhou 215123 (China); Peking University Shenzhen SOC Key Laboratory, PKU-HKUST Shenzhen-Hong Kong Institute, Hi-Tech Industrial Park South, Shenzhen 518057 (China)

    2014-04-14T23:59:59.000Z

    The incorporation of plasmonic nanostructures in the thin-film solar cells (TFSCs) is a promising route to harvest light into the nanoscale active layer. However, the light trapping scheme based on the plasmonic effects intrinsically presents narrow-band resonant enhancement of light absorption. Here we demonstrate that by cascading metal nanogratings with different sizes atop the TFSCs, broadband absorption enhancement can be realized by simultaneously exciting multiple localized surface plasmon resonances and inducing strong coupling between the plasmonic modes and photonic modes. As a proof of concept, we demonstrate of 66.5% in the photocurrent in an ultrathin amorphous silicon TFSC with two-dimensional cascaded gratings over the reference cell without gratings.

  9. Tunable storage of optical pulses in a tailored Bragg-grating structure

    E-Print Network [OSTI]

    Fu, Shenhe; Liu, Yikun; Zhou, Jianying; Malomed, Boris A

    2015-01-01T23:59:59.000Z

    Scenarios for controllable creation, trapping and holding of single and multiple solitons in a specially designed nonlinear Bragg grating (BG) are proposed. The setting includes a chirped BG segment, which is linked via a local defect to a uniform BG with a built-in array of defects. A parabolic relation between the trapping position of the incident soliton and its power is obtained. Simultaneous trapping of two and three solitons at different locations is demonstrated too.

  10. The CHANDRA HETGS X-ray Grating Spectrum of Eta Car

    E-Print Network [OSTI]

    M. F. Corcoran; J. H. Swank; R. Petre; K. Ishibashi; K. Davidson; L. Townsley; R. Smith; S. White; R. Viotti; A. Damineli

    2001-09-19T23:59:59.000Z

    Eta Car may be the most massive and luminous star in the Galaxy and is suspected to be a massive, colliding wind binary system. The CHANDRA X-ray observatory has obtained a calibrated, high-resolution X-ray spectrum of the star uncontaminated by the nearby extended soft X-ray emisssion. Our 89 ksec CHANDRA observation with the High Energy Transmission Grating Spectrometer (HETGS) shows that the hot gas near the star is non-isothermal. The temperature distribution may represent the emission on either side of the colliding wind bow shock, effectively ``resolving'' the shock. If so, the pre-shock wind velocities are ~ 700 and ~ 1800 km/s in our analysis, and these velocities may be interpreted as the terminal velocities of the winds from Eta Car and from the hidden companion star. The forbidden-to-intercombination (f/i) line ratios for the He-like ions of S, Si and Fe are large, indicating that the line forming region lies far from the stellar photosphere. The iron fluorescent line at 1.93 Angstrom, first detected by ASCA, is clearly resolved from the thermal iron line in the CHANDRA grating spectrum. The Fe fluorescent line is weaker in our CHANDRA observation than in any of the ASCA spectra. The CHANDRA observation also provides an uninterrupted high-time resolution lightcurve of the stellar X-ray emission from Eta Car and suggests that there was no significant, coherent variability during the CHANDRA observation. The Eta Car CHANDRA grating spectrum is unlike recently published X-ray grating spectra of single massive stars in significant ways and is generally consistent with colliding wind emission in a massive binary.

  11. An experimental study of low-frequency amplitude noise in a fibre Bragg grating laser diode

    SciTech Connect (OSTI)

    Zholnerov, V S [Russian Institute of Radionavigation and Time, St.Petersburg (Russian Federation); Ivanov, A V; Kurnosov, V D; Kurnosov, K V; Romantsevich, V I; Chernov, R V [Open Joint-Stock Company M.F. Stel'makh Polyus Research Institute, Moscow (Russian Federation)

    2013-09-30T23:59:59.000Z

    We have studied the amplitude noise in a fibre Bragg grating laser diode. It has been shown that discontinuities in noise characteristics correlate with those in the power current and spectral characteristics of the laser diode, whereas the noise characteristics of the pump source have no such discontinuities. The highest noise level has been observed at pump currents corresponding to concurrent generation of two longitudinal modes. (lasers)

  12. Electron temperature measurements during electron cyclotron heating on PDX using a ten channel grating polychromator

    SciTech Connect (OSTI)

    Cavallo, A.; Hsuan, H.; Boyd, D.; Grek, B.; Johnson, D.; Kritz, A.; Mikkelsen, D.; LeBlanc, B.; Takahashi, H.

    1984-10-01T23:59:59.000Z

    During first harmonic electron cyclotron heating (ECH) on the Princeton Divertor Experiment (PDX) (R/sub 0/ = 137 cm, a = 40 cm), electron temperature was monitored using a grating polychromator which measured second harmonic electron cyclotron emission from the low field side of the tokamak. Interference from the high power heating pulse on the broadband detectors in the grating instrument was eliminated by using a waveguide filter in the transmission line which brought the emission signal to the grating instrument. Off-axis (approx. 4 cm) location of the resonance zone resulted in heating without sawtooth or m = 1 activity. However, heating with the resonance zone at the plasma center caused very large amplitude sawteeth accompanied by strong m = 1 activity: ..delta..T/T/sub MAX/ approx. = 0.41, sawtooth period approx. = 4 msec, m = 1 period approx. = 90 ..mu.. sec, (11 kHz). This is the first time such intense MHD activity driven by ECH has been observed. (For both cases there was no sawtooth activity in the ohmic phase of the discharge before ECH.) At very low densities there is a clear indication that a superthermal electron population is created during ECH.

  13. Sensitivity enhancement of grating interferometer based two-dimensional sensor arrays using two-wavelength readout

    SciTech Connect (OSTI)

    Ferhanoglu, Onur; Urey, Hakan

    2011-07-01T23:59:59.000Z

    Diffraction gratings integrated with microelectromechanical systems (MEMS) sensors offer displacement measurements with subnanometer sensitivity. However, the sensitivity of the interferometric readout may drop significantly based on the gap between the grating and the reference surface. A two-wavelength (2-{lambda}) readout method was previously tested using a single MEMS sensor for illustrating increased displacement measurement capability. This work demonstrates sensitivity enhancement on a sensor array with large scale parallelization ({approx}20,000 sensors). The statistical representation, which is developed to model sensitivity enhancement within a grating based sensor array, is supported by experimental results using a thermal sensor array. In the experiments, two lasers at different wavelengths (633 and 650 nm) illuminate the thermal sensor array from the backside, time-sequentially. The diffracted first order light from the array is imaged onto a single CCD camera. The target scene is reconstructed by observing the change in the first diffracted order diffraction intensity for both wavelengths. Merging of the data from two measurements with two lasers was performed by taking the larger of the two CCD measurements with respect to the reference image for each sensor. {approx}30% increase in the average sensitivity was demonstrated for a 160x120 pixel IR sensor array. Proposed architecture is also applicable to a variety of sensing applications, such as parallel biosensing and atomic force microscopy, for improved displacement measurements and enhanced sensitivity.

  14. Digital video disc (DVD) technology is by no means new, but that doesn't mean we know every-thing about the way these devices store our movies and data. New insights into the function-

    E-Print Network [OSTI]

    Kemner, Ken

    Ferroelectric Films by Analy- sis of Synchrotron X-ray Scattering Measurements," Phys. Rev. B 71, 144112 (2005 Radiation Facility) and neutron reflectometry to obtain the first detailed microscopic picture

  15. Estimating consumption rates of juvenile sandbar sharks (Carcharhinus plumbeus) in Chesapeake Bay, Virginia, using a bioenergetics model

    E-Print Network [OSTI]

    Dowd, William Wesley; Brill, R W; Bushnell, P G; Musick, J A

    2006-01-01T23:59:59.000Z

    error analy- sis of fish bioenergetics models. Can J. Fish.importance of activity in bioenergetics models applied toA. C. Cockcroft. 1990. Bioenergetics of fishes in a high-

  16. Using Formal Models to Objectively Judge Quality of Multi-Threaded Programs in Empirical Studies

    E-Print Network [OSTI]

    Stirewalt, Kurt

    properties in the Finite State Processes (FSP) notation and use the Labeled Transition System Analyzer (LTSA-1-60558-025-8/08/05 ...$5.00. lyzer (LTSA), quality assessment of code, synchronization analy- sis 1. Introduction

  17. Dtection de Fautes par Rseaux Baysiens dans les Procds Multivaris

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    between the usual detection methods that are the multivari- ate control charts (Hotelling's T2 , MEWMA Discriminante KEYWORDS: SPC, multivariate, detection, bayesian network, T2 , MEWMA, Discriminant Analy- sis

  18. Fuzzy Diagnosis using Order of Magnitude Exaggeration Neal Snooke

    E-Print Network [OSTI]

    Snooke, Neal

    ) diagnostic system, by precompiling the results of off-line qualitative simulation and FMEA analy- sis. This paper outlines the technique which is be- ing applied to automotive and aerospace electrical and fluid

  19. Analogies between optical propagation and heat diffusion: Applications to micro-cavities, gratings and cloaks

    E-Print Network [OSTI]

    Amra, Claude; Zerrad, Myriam; Guenneau, Sbastien; Soriano, Gabriel; Gralak, Boris; Bellieud, Michel; Veynante, Denis; Rolland, Nathalie

    2015-01-01T23:59:59.000Z

    A new analogy between optical propagation and heat diffusion in heterogeneous anisotropic media has been proposed recently [S. Guenneau, C. Amra, and D. Veynante, Optics Express Vol. 20, 8207-8218 (2012)]. A detailed derivation of this unconventional correspondence is presented and developed. In time harmonic regime, all thermal parameters are related to optical ones in artificial metallic media, thus making possible to use numerical codes developed for optics. Then the optical admittance formalism is extended to heat conduction in multilayered structures. The concepts of planar micro-cavities, diffraction gratings, and planar transformation optics for heat conduction are addressed. Results and limitations of the analogy are emphasized.

  20. Enhancement of near-infrared absorption in graphene with metal gratings

    SciTech Connect (OSTI)

    Zhao, B.; Zhang, Z. M., E-mail: zhuomin.zhang@me.gatech.edu [G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States); Zhao, J. M. [G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States); School of Energy Science and Engineering, Harbin Institute of Technology, Harbin (China)

    2014-07-21T23:59:59.000Z

    Graphene has been demonstrated as a good candidate for ultrafast optoelectronic devices. However, graphene is essentially transparent in the visible and near infrared with an absorptivity of 2.3%, which has largely limited its application in photon detection. This Letter demonstrates that the absorptance in a monatomic graphene layer can be greatly enhanced to nearly 70%, thanks to the localized strong electric field resulting from magnetic resonances in deep metal gratings. Furthermore, the resonance frequency is essentially not affected by the additional graphene layer. The method presented here may benefit the design of next-generation graphene-based optical and optoelectronic devices.

  1. MRI-compatible Haptics: Feasibility of using optical fiber Bragg grating strain-sensors to detect deflection of needles in an MRI environment

    E-Print Network [OSTI]

    Park, Yong-Lae

    MRI-compatible Haptics: Feasibility of using optical fiber Bragg grating strain-sensors to detect fiber-optic-based force and deflection sensors based on fiber Bragg grating (FBG) technology have been was developed using a single optical fiber and an MRI compatible biopsy needle (22ga x 15cm). The FBG sensor

  2. Fabrication and Evaluation of a Multilayer Laminar-Type Holographic Grating and Its Application to a High Efficiency Grazing Incidence Monochromator for the 1-8 keV Region

    SciTech Connect (OSTI)

    Koike, Masato; Ishino, Masahiko; Imazono, Takashi [Japan Atomic Energy Agency, 8-1 Umemidai, Kizu, Kyoto 619-0215 (Japan); Heimann, Phil A.; Gullikson, Eric H. [Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States); Takenaka, Hisataka; Hatayama, Masatoshi [NTT Advanced Technology Corp., 2-1-1, Nishi-shinjuku, Shinjuku-ku, Tokyo, 163-0431 (Japan); Sasai, Hiroyuki [Shimadzu Corp., 1 Nishinokyo-Kuwabaramachi, Nakagyo-ku, Kyoto, 614-0051 (Japan); Sano, Kazuo [Shimadzu Emit Co., Ltd., 2-5-23, Kitahama, Chuo-ku, Osaka 541-0041 (Japan)

    2007-01-19T23:59:59.000Z

    A W/C multilayer laminar-type holographic grating was fabricated and its diffraction efficiency was evaluated in the 1-8 keV region. Taking advantage of its high diffraction efficiency a monochromator equipped with a multilayer varied-line-spacing plane grating was designed. The throughput of the monochromator based on the experimental diffraction efficiency of the multilayer grating and resolving power were calculated in comparison with those of a monochromator equipped with a Au coated grating.

  3. Acoustic grating fringe projector for high-speed and high-precision three-dimensional shape measurements

    SciTech Connect (OSTI)

    Yin Xuebing; Zhao Huijie; Zeng Junyu; Qu Yufu

    2007-05-20T23:59:59.000Z

    A new acoustic grating fringe projector (AGFP) was developed for high-speed and high-precision 3D measurement. A new acoustic grating fringe projection theory is also proposed to describe the optical system. The AGFP instrument can adjust the spatial phase and period of fringes with unprecedented speed and accuracy. Using rf power proportional-integral-derivative (PID) control and CCD synchronous control, we obtain fringes with fine sinusoidal characteristics and realize high-speed acquisition of image data. Using the device, we obtained a precise phase map for a 3D profile. In addition, the AGFP can work in running fringe mode, which could be applied in other measurement fields.

  4. Integrated municipal solid waste treatment using a grate furnace incinerator: The Indaver case

    SciTech Connect (OSTI)

    Vandecasteele, C. [Department of Chemical Engineering, Katholieke Universiteit Leuven, De Croylaan 46, 3001 Leuven (Belgium)], E-mail: carlo.vandecasteele@cit.kuleuven.be; Wauters, G. [Indaver, Dijle 17a, 2800 Mechelen (Belgium); Arickx, S. [Department of Chemical Engineering, Katholieke Universiteit Leuven, De Croylaan 46, 3001 Leuven (Belgium); Jaspers, M. [Indaver, Dijle 17a, 2800 Mechelen (Belgium); Van Gerven, T. [Department of Chemical Engineering, Katholieke Universiteit Leuven, De Croylaan 46, 3001 Leuven (Belgium)

    2007-07-01T23:59:59.000Z

    An integrated installation for treatment of municipal solid waste and comparable waste from industrial origin is described. It consists of three grate furnace lines with flue gas treatment by half-wet scrubbing followed by wet scrubbing, and an installation for wet treatment of bottom ash. It is demonstrated that this integrated installation combines high recovery of energy (40.8% net) with high materials recovery. The following fractions were obtained after wet treatment of the bottom ash: ferrous metals, non-ferrous metals, three granulate fractions with different particle sizes, and sludge. The ferrous and non-ferrous metal fractions can both be recycled as high quality raw materials; the two larger particle size particle fractions can be applied as secondary raw materials in building applications; the sand fraction can be used for applications on a landfill; and the sludge is landfilled. For all components of interest, emissions to air are below the limit values. The integrated grate furnace installation is characterised by zero wastewater discharge and high occupational safety. Moreover, with the considered installation, major pollutants, such as PCDD/PCDF, Hg and iodine-136 are to a large extent removed from the environment and concentrated in a small residual waste stream (flue gas cleaning residue), which can be landfilled after stabilisation.

  5. Analysis of higher harmonic contamination with a modified approach using a grating analyser

    SciTech Connect (OSTI)

    Gupta, Rajkumar, E-mail: rkg@rract.gov.in; Modi, Mohammed H.; Lodha, G. S. [X-ray Optics Section, Indus Synchrotrons Utilization Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013 (India)] [X-ray Optics Section, Indus Synchrotrons Utilization Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013 (India); Kumar, M.; Chakera, J. A. [Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013 (India)] [Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013 (India)

    2014-04-15T23:59:59.000Z

    Soft x-ray spectra of the toroidal grating monochromator (TGM) at the reflectivity beamline of Indus-1 synchrotron source are analyzed for higher harmonic contribution. A diffraction grating of central line spacing 1200 l/mm is used to disperse the monochromatic beam received from TGM to quantify the harmonic contents in the 50360 wavelength range. In order to calculate the harmonic contamination, conventionally the intensity of higher order peak is divided by first order peak intensity of the desired wavelength. This approach is found to give wrong estimate as first order peak itself is overlapped by higher order peaks. In the present study, a modified approach has been proposed to calculate harmonic contamination where the intensity contributions of overlapping orders have been removed from the first order diffraction peak of the desired wavelength. It is found that the order contamination in the TGM spectra is less than 15% in the wavelength range of 90180 . The total harmonic contribution increases from 6%60% in the wavelength range of 150260 . The critical wavelength of Indus-1 is 61 hence the harmonic contamination below 90 is significantly low. The results obtained with modified approach match well with those obtained by quantitative analysis of multilayer reflectivity data. The obtained higher harmonics data are used to fit the transmission of aluminum edge filter in the 120360 wavelength range.

  6. Grating-gate tunable plasmon absorption in InP and GaN based R. E. Peale*a

    E-Print Network [OSTI]

    Peale, Robert E.

    Grating-gate tunable plasmon absorption in InP and GaN based HEMTs R. E. Peale*a , H. Saxenaa , W, Inc., 1195 Atlas Road, Columbia SC, USA 29209 ABSTRACT Gate-voltage tunable plasmon resonances incident THz radiation into 2D plasmons. Narrow-band resonant absorption of THz radiation was observed

  7. Volume203,number2,3 CHEMICAL PHYSICS LETTERS 19February1993 Transient grating spectroscopy of exciton sound waves

    E-Print Network [OSTI]

    Mukamel, Shaul

    of exciton sound waves in dense exciton fluids Jan A. Leegwater and Shaul Mukamel Department of Chemistry to that of sound waves in an ordinary gas. A method to probe these motions using transient grating with strong pump density may disappear and reap- pear later. The physical mechanism is analogous to that of sound waves

  8. 1966 JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 15, NO. 10, OCTOBER 1997 Mode Conversion of Ultrafast Pulses by Grating

    E-Print Network [OSTI]

    Ziolkowski, Richard W.

    conversion of an ultrafast, ultrawide-bandwidth optical pulse propagating in a layered di- electric waveguide for an ultrafast six-cycle optical pulse over that achieved with standard uniform grating convertors. Index Terms--Dielectric waveguides, FDTD, mode conversion, mode extraction, numerical modeling, ultrafast optical pulses. I

  9. Efficiency enhancement in a light-emitting diode with a two-dimensional surface grating photonic crystal

    E-Print Network [OSTI]

    Baba, Toshihiko

    Efficiency enhancement in a light-emitting diode with a two-dimensional surface grating photonic 21 November 2003 We demonstrate a light-emitting diode exhibiting 1.72.7-fold enhancement in light light emitting diode LED , the ef- ficiency is limited to several percents by a low light extrac- tion

  10. Jueves 10 de octubre de 2013, de 13:00 a 14:00 h Neutron optics using holographic gratings

    E-Print Network [OSTI]

    Escolano, Francisco

    are being developed at present. Finally we will give an outlook on novel neutron-scattering instrumentationJueves 10 de octubre de 2013, de 13:00 a 14:00 h Neutron optics using holographic gratings Prof. Dr. Martin Fally Holography and Neutron Diffraction Group - Faculty of Physics - University of Vienna

  11. Devices useful for vacuum ultraviolet beam characterization including a movable stage with a transmission grating and image detector

    DOE Patents [OSTI]

    Gessner, Oliver; Kornilov, Oleg A; Wilcox, Russell B

    2013-10-29T23:59:59.000Z

    The invention provides for a device comprising an apparatus comprising (a) a transmission grating capable of diffracting a photon beam into a diffracted photon output, and (b) an image detector capable of detecting the diffracted photon output. The device is useful for measuring the spatial profile and diffraction pattern of a photon beam, such as a vacuum ultraviolet (VUV) beam.

  12. July 1, 2001 / Vol. 26, No. 13 / OPTICS LETTERS 989 Waveguide grating mirror for large-area semiconductor lasers

    E-Print Network [OSTI]

    Avrutsky, Ivan

    was demonstrated in Ref. 7. A similar scheme with near-infrared dye was reported in Ref. 8 On a smaller scale a waveguide grating mirror that uses anomalous reflection of light associ- ated with excitation of waveguide. Anomalous reflection in the case of a lossless waveguide can approach 100% close to resonant wave- guide

  13. Inverted cones grating for flexible metafilter at optical and infrared frequencies

    SciTech Connect (OSTI)

    Brckner, Jean-Baptiste; Le Rouzo, Judikal; Escoubas, Ludovic [Aix-Marseille Universit, IM2NP, CNRS-UMR 7334, Domaine Universitaire de Saint-Jrme, Service 231, 13397 Marseille Cedex 20 (France); Brissonneau, Vincent; Dubarry, Christophe [CEA-LITEN DTNM, 17 Avenue des Martyrs, 38054 Grenoble cedex 9 (France); Ferchichi, Abdelkerim; Gourgon, Ccile [LTM CNRS, Laboratoire des Technologies de la Microlectronique 17 Avenue des Martyrs, 38054 Grenoble cedex 9 (France); Berginc, Grard [Thales Optronique S.A., 2 Avenue Gay Lussac, 78990 Elancourt (France)

    2014-02-24T23:59:59.000Z

    By combining the antireflective properties from gradual changes in the effective refractive index and cavity coupling from cone gratings and the efficient optical behavior of a tungsten film, a flexible filter showing very broad antireflective properties from the visible to short wavelength infrared region and, simultaneously, a mirror-like behavior in the mid-infrared wavelength region and long-infrared wavelength region has been conceived. Nanoimprint technology has permitted the replication of inverted cone patterns on a large scale on a flexible polymer, afterwards coated with a thin tungsten film. This optical metafilter is of great interest in the stealth domain where optical signature reduction from the optical to short wavelength infrared region is an important matter. As it also acts as selective thermal emitter offering a good solar-absorption/infrared-emissivity ratio, interests are found as well for solar heating applications.

  14. Structural Health Monitoring of Superconducting Magnets at CERN Using Fiber Bragg Grating Sensors

    E-Print Network [OSTI]

    Chiuchiolo, A; Perez, J C; Bajas, H; Guinchard, M; Giordano, M; Breglio, G; Consales, M; Cusano, A

    2014-01-01T23:59:59.000Z

    The use of Fiber Bragg Grating sensors is becoming particularly challenging for monitoring different parameters in extreme operative conditions such as ultra-low temperatures, high electromagnetic fields and strong mechanical stresses. This work reports the use of the FBG for a new generation of accelerator magnets with the goal to develop an adequate sensing technology able to provide complementary or alternative information to the conventional strain gauges through the whole service life of the magnet. The study is focused on the mechanical performances of the magnet structure, which has to preserve the sensitive coils from any damage during the entire magnet fabrication process preventing even microscopic movements of the winding that can eventually initiate a transition from superconducting to normal conducting state of the material used (called in the specific literature as quench). The FBGs have been glued on the aluminium structure of two magnets prototypes by using an adhesive suitable for cryog...

  15. A soft x-ray transmission grating imaging-spectrometer for the National Ignition Facility

    SciTech Connect (OSTI)

    Moore, A S; Guymer, T M; Kline, J L; Morton, J; Taccetti, M; Lanier, N E; Bentley, C; Workman, J; Peterson, B; Mussack, K; Cowan, J; Prasad, R; Richardson, M; Burns, S; Kalantar, D H; Benedetti, L R; Bell, P; Bradley, D; Hsing, W; Stevenson, M

    2012-05-01T23:59:59.000Z

    A soft x-ray transmission grating spectrometer has been designed for use on high energy-density physics experiments at the National Ignition Facility (NIF); coupled to one of the NIF gated x-ray detectors (GXD) it records sixteen time-gated spectra between 250 and 1000eV with 100ps temporal resolution. The trade-off between spectral and spatial resolution leads to an optimized design for measurement of emission around the peak of a 100-300eV blackbody spectrum. Performance qualification results from the NIF, the Trident Laser Facility and VUV beamline at the National Synchrotron Light Source (NSLS), evidence a <100{micro}m spatial resolution in combination with a source-size limited spectral resolution that is <10eV at photon energies of 300eV.

  16. Laser generation of gas bubbles: Photoacoustic and photothermal effects recorded in transient grating experiments

    SciTech Connect (OSTI)

    Frez, Clifford; Diebold, Gerald J. [Department of Chemistry, Brown University, Providence, Rhode Island 02912 (United States)

    2008-11-14T23:59:59.000Z

    Absorption of high power laser radiation by colloidal suspensions or solutions containing photoreactive chemicals can result in bubble production. Here, transient grating experiments are reported where picosecond and nanosecond lasers are used to initiate photoinduced processes that lead to bubble formation. Irradiation of colloidal Pt suspensions is found to produce water vapor bubbles that condense back to liquid on a nanosecond time scale. Laser irradiation of Pt suspensions supersaturated with CO{sub 2} liberates dissolved gas to produce bubbles at the sites of the colloidal particles. Laser induced chemical reactions that produce bubbles are found in suspensions of particulate C in water, and in the sensitized decarboxylation of oxalic acid. Theory based on linear acoustics as well as the Rayleigh-Plesset equation is given for description of the bubble motion.

  17. Field theory of a terahertz staggered double-grating arrays waveguide Cerenkov traveling wave amplifier

    SciTech Connect (OSTI)

    Xie, Wenqiu; He, Fangming [Institute of Electronics, Chinese Academy of Sciences, Beijing 100190 (China) [Institute of Electronics, Chinese Academy of Sciences, Beijing 100190 (China); University of Chinese Academy of Sciences, Beijing 100049 (China); Wang, Zicheng; Luo, Jirun; Zhao, Ding; Liu, Qinglun [Institute of Electronics, Chinese Academy of Sciences, Beijing 100190 (China)] [Institute of Electronics, Chinese Academy of Sciences, Beijing 100190 (China)

    2014-04-15T23:59:59.000Z

    Based on a rectilinear sheet electron beam propagating through the tunnel of a staggered double-grating arrays waveguide (SDGAW) slow-wave structure (SWS), a three dimensional field theory for describing the modes and the beam-wave interaction is presented, in which the higher order terms inside the grooves are retained. The fields' distribution and the conductivity losses are also calculated utilizing the theoretical model. With the optimized parameters of the SWS and the electron beam, a 1 THz SDGAW Cerenkov traveling wave amplifier may obtain a moderate net gain (the peak gain is 12.7?dB/cm) and an ultra 3?dB wideband (0.19?THz) considering the serious Ohmic losses. The theoretical results have been compared with those calculated by 3D HFSS code and CST STUDIO particle-in-cell simulations.

  18. High Pressure Sensing and Dynamics Using High Speed Fiber Bragg Grating Interrogation Systems

    SciTech Connect (OSTI)

    Rodriguez, G. [LANL; Sandberg, R. L. [LANL; Lalone, B. M. [NSTec; Marshall, B. R. [NSTec; Grover, M. [NSTec; Stevens, G. D. [NSTec; Udd, E. [Columbia Gorge Research

    2014-06-01T23:59:59.000Z

    Fiber Bragg gratings (FBGs) are developing into useful sensing tools for measuring high pressure dynamics in extreme environments under shock loading conditions. Approaches using traditional diode array coupled FBG interrogation systems are often limited to readout speeds in the sub-MHz range. For shock wave physics, required detection speeds approaching 100 MHz are desired. We explore the use of two types of FBG sensing systems that are aimed at applying this technology as embedded high pressure probes for transient shock events. Both approaches measure time resolved spectral shifts in the return light from short (few mm long) uniform FBGs at 1550 nm. In the first approach, we use a fiber coupled spectrometer to demultiplex spectral channels into an array (up to 12) of single element InGaAs photoreceivers. By monitoring the detectors during a shock impact event with high speed recording, we are able to track the pressure induced spectral shifting in FBG down to a time resolution of 20 ns. In the second approach, developed at the Special Technologies Lab, a coherent mode-locked fiber laser is used to illuminate the FBG sensor. After the sensor, wavelength-to-time mapping is accomplished with a chromatic dispersive element, and entire spectra are sampled using a single detector at the modelocked laser repetition rate of 50 MHz. By sampling with a 12 GHz InGaAs detector, direct wavelength mapping in time is recorded, and the pressure induced FBG spectral shift is sampled at 50 MHz. Here, the sensing systems are used to monitor the spectral shifts of FBGs that are immersed into liquid water and shock compressed using explosives. In this configuration, the gratings survive to pressures approaching 50 kbar. We describe both approaches and present the measured spectral shifts from the shock experiments.

  19. X-Atlas: An Online Archive of Chandra's Stellar High Energy Transmission Gratings Observations

    E-Print Network [OSTI]

    Owen W. Westbrook; Nancy Remage Evans; Scott J. Wolk; Vinay L. Kashyap; Joy S. Nichols; Peter J. Mendygral; Jonathan D. Slavin; Bradley Spitzbart; Wayne L. Waldron

    2007-12-04T23:59:59.000Z

    The high-resolution X-ray spectroscopy made possible by the 1999 deployment of the Chandra X-ray Observatory has revolutionized our understanding of stellar X-ray emission. Many puzzles remain, though, particularly regarding the mechanisms of X-ray emission from OB stars. Although numerous individual stars have been observed in high-resolution, realizing the full scientific potential of these observations will necessitate studying the high-resolution Chandra dataset as a whole. To facilitate the rapid comparison and characterization of stellar spectra, we have compiled a uniformly processed database of all stars observed with the Chandra High Energy Transmission Grating (HETG). This database, known as X-Atlas, is accessible through a web interface with searching, data retrieval, and interactive plotting capabilities. For each target, X-Atlas also features predictions of the low-resolution ACIS spectra convolved from the HETG data for comparison with stellar sources in archival ACIS images. Preliminary analyses of the hardness ratios, quantiles, and spectral fits derived from the predicted ACIS spectra reveal systematic differences between the high-mass and low-mass stars in the atlas and offer evidence for at least two distinct classes of high-mass stars. A high degree of X-ray variability is also seen in both high and low-mass stars, including Capella, long thought to exhibit minimal variability. X-Atlas contains over 130 observations of approximately 25 high-mass stars and 40 low-mass stars and will be updated as additional stellar HETG observations become public. The atlas has recently expanded to non-stellar point sources, and Low Energy Transmission Grating (LETG) observations are currently being added as well.

  20. A CENSUS OF X-RAY GAS IN NGC 1068: RESULTS FROM 450 ks of CHANDRA HIGH ENERGY TRANSMISSION GRATING OBSERVATIONS

    E-Print Network [OSTI]

    Kallman, T.

    We present models for the X-ray spectrum of the Seyfert 2 galaxy NGC 1068. These are fitted to data obtained using the High Energy Transmission Grating on Chandra. The data show line and radiative recombination continuum ...

  1. The sensitivity enhancement of tilted fibre Bragg grating sensors with polarization dependent resonant nano-scale coatings

    E-Print Network [OSTI]

    Bialiayeu, Aliaksandr

    2015-01-01T23:59:59.000Z

    Fibre Bragg grating sensors have emerged as a simple, inexpensive, accurate, sensitive and reliable platform, a viable alternative to the traditional bulkier optical sensor platforms. In this work we present an extensive theoretical analysis of the tilted fibre Bragg grating sensor (TFBG) with a particular focus on its polarization-dependent properties. We have developed a highly efficient computer model capable of providing the full characterization of the TFBG device in less then $3$~minutes for a given state of incident light polarization. As a result, the polarization-dependent spectral response, the field distribution at the sensor surface as well as the fine structure of particular resonances have become accessible for theoretical analysis. As a part of this computer model we have developed a blazingly fast full-vector complex mode solver, capable of handling cylindrical waveguides of an arbitrary complex refractive index profile. Along with the theoretical study we have investigated optical properties ...

  2. Measurement method for roll angular displacement with a high resolution by using diffraction gratings and a heterodyne interferometer

    SciTech Connect (OSTI)

    Tang, Shanzhi, E-mail: shanzhit@gmail.com [Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China) [Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China); School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049 (China); Wang, Zhao [School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049 (China)] [School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049 (China); Gao, Jianmin; Guo, Junjie [State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710054 (China)] [State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710054 (China)

    2014-04-15T23:59:59.000Z

    The roll angle measurement is difficult to be achieved directly using a typical commercial interferometer due to its low sensitivity in axial direction, where the axial direction is orthogonal to the plane of the roll angular displacement. A roll angle measurement method combined diffraction gratings with a laser heterodyne interferometer is discussed in this paper. The diffraction grating placed in the plane of a roll angular displacement and the interferometer arranged in the plane's orthogonal direction, constitute the measurement pattern for the roll angle with high resolution. The roll angular displacement, considered as the linear, can be tested precisely when the corresponding angle is very small. Using the proposed method, the angle roll measurement obtains the high resolution of 0.002{sup ?}. Experiment has proved its feasibility and practicability.

  3. Carrier Dynamics in InGaN/GaN SQW Structure Probed by the Transient Grating Method

    E-Print Network [OSTI]

    Okamoto, Koichi

    Carrier Dynamics in InGaN/GaN SQW Structure Probed by the Transient Grating Method; 78.55.Cr; 78.67.De; S7.14 Carrier dynamics in GaN and InGaN/GaN SQW structures were observed by using inhomogeneity of In composition. Recently, InGaN/GaN-based light emitting diodes (LEDs) have been commercialized

  4. Fabrication of high aspect grating using bonded substrate for X-ray refraction imaging by Talbot-Lau interferometer

    SciTech Connect (OSTI)

    Tada, Takuji; Murakoshi, Dai; Ishii, Hiroyasu; Hashimoto, Atsushi; Kaneko, Yasuhisa; Ito, Wataru; Agano, Toshitaka [Medical Systems Research and Development Center, R and D Management Headquarters, FUJIFILM Corp., 798, Miyanodai, Kaisei-machi, Ashigarakami-gun, Kanagawa 258-8538 (Japan); Imaging Technology Center, R and D Management Headquarters, FUJIFILM Corp., 798, Miyanodai, Kaisei-machi, Ashigarakami-gun, Kanagawa 258-8538 (Japan)

    2012-07-31T23:59:59.000Z

    In order to improve the image quality of X-ray refraction images using a Talbot-Lau interferometer, we have been attempting to fabricate gratings with high aspect ratio. In our attempt, deep grooves of grating structure were channeled on a Si substrate bonded by Au diffusion bonding method, and the grooves were filled with Au where the Au layer used for the bonding Si substrate was acting as a seed layer of Au electroplating. From the results of a visibility measurement and a cross sectional SEM image, it was confirmed that the grooves with a pitch of 5.8 {mu}m and a depth of 100 {mu}m could be successfully filled with Au over a large area of 72 Multiplication-Sign 80 mm{sup 2}. Using this grating, the X-ray refraction images for the cartilage of a knee joint of a livestock pig could be obtained where SPS method was employed for the single-shot image acquisition.

  5. Beam hardening effects in grating-based x-ray phase-contrast imaging

    SciTech Connect (OSTI)

    Chabior, Michael; Donath, Tilman; David, Christian; Bunk, Oliver; Schuster, Manfred; Schroer, Christian; Pfeiffer, Franz [Siemens AG Corporate Technology, 80200 Muenchen (Germany); Paul Scherrer Institut, 5232 Villigen PSI (Switzerland); Siemens AG Corporate Technology, 80200 Muenchen (Germany); Technische Universitaet Dresden, 01062 Dresden (Germany); Technische Universitaet Muenchen, 85748 Garching (Germany)

    2011-03-15T23:59:59.000Z

    Purpose: In this work, the authors investigate how beam hardening affects the image formation in x-ray phase-contrast imaging and consecutively develop a correction algorithm based on the results of the analysis. Methods: The authors' approach utilizes a recently developed x-ray imaging technique using a grating interferometer capable of visualizing the differential phase shift of a wave front traversing an object. An analytical description of beam hardening is given, highlighting differences between attenuation and phase-contrast imaging. The authors present exemplary beam hardening artifacts for a number of well-defined samples in measurements at a compact laboratory setup using a polychromatic source. Results: Despite the differences in image formation, the authors show that beam hardening leads to a similar reduction of image quality in phase-contrast imaging as in conventional attenuation-contrast imaging. Additionally, the authors demonstrate that for homogeneous objects, beam hardening artifacts can be corrected by a linearization technique, applicable to all kinds of phase-contrast methods using polychromatic sources. Conclusions: The evaluated correction algorithm is shown to yield good results for a number of simple test objects and can thus be advocated in medical imaging and nondestructive testing.

  6. Interference of small and of large quantum particles behind an asymmetric grating

    SciTech Connect (OSTI)

    Bozic, Mirjana; Arsenovic, Dusan [Institute of Physics, P.O. Box 57, 11001 Belgrade (Serbia and Montenegro); Vuskovic, Leposava [Old Dominion University, Department of Physics, 4600 Elkhorn Avenue, Norfolk, Virginia 23529 (United States)

    2004-05-01T23:59:59.000Z

    Quantum theory of interference phenomena does not take the diameter of the particle into account, since particles were much smaller than the width of the slits before the rise of molecular interferometry. In the experiments with large molecules, the diameter of the particle has approached the width of the slits. Therefore, an analytical description of these cases should include a finite particle size. An asymmetric double-slit grating seems to be very suitable for the study of the influence of a particle's size on the interference pattern. We identify three characteristic cases for the ratio of slit widths {delta}{sub 1} and {delta}{sub 2} and the particle diameter D: D{delta}{sub 1} and D{delta}{sub 2}, {delta}{sub 1}>D>{delta}{sub 2}, and D>{delta}{sub 1}>{delta}{sub 2}. Taking into account the influence of both slits on the particle wave function, regardless of through which slit the particle passed, we treat the particle-wall interaction in a simple fashion, such that if the particle size is greater than the slit opening there is no transmission. The transverse momentum distribution is independent of the distance from the slits and the particle size, while the space distribution strongly depends on this distance and the particle size. We found that the interference is absent only when the particle's diameter is larger than both slit widths, D>{delta}{sub 1}>{delta}{sub 2}.

  7. LABORATORI NAZIONALI DI FRASCATI SIS Pubblicazioni

    E-Print Network [OSTI]

    Istituto Nazionale di Fisica Nucleare (INFN)

    by five orders of magnitude, as shown in Figure 1, where full symbols correspond to past or present. Presently only eight particle colliders are operational in the world, here including LHC (2). High energy in the future the same growing law of energy and luminosity as in the past is becoming more and more challenging

  8. SIS Calculator User Guide 1 What's Inside

    E-Print Network [OSTI]

    irrigation system pump system(s) simplified engineering assumptions Using this information, 13 soil types, and 7 irrigation system types. In addition to data you enter, some underlying in climate, soil characteristics, crops, irrigation, and pumping systems, precise estim

  9. Four combinations of two cosine gratings, the 2nd and 6th harmonics of a 0.5 c/deg grating (1 c/deg and 3 c/deg respectively), were used as the target stimulus patterns. Pattern 1 is the 2nd harmonic in isolation, pattern 2 is the 6th harmonic in isolatio

    E-Print Network [OSTI]

    Klein, Stanley

    METHODS Four combinations of two cosine gratings, the 2nd and 6th harmonics of a 0.5 c/deg grating harmonic in isolation, pattern 2 is the 6th harmonic in isolation, pattern 3 is the 2nd plus the 6th and pattern 4 is the 2nd minus the 6th. The one-dimensional noise was the sum of 1st-7th harmonics of a 0.5c

  10. Combined heat treatment and acid hydrolysis of cassava grate waste (CGW) biomass for ethanol production

    SciTech Connect (OSTI)

    Agu, R.C.; Amadife, A.E.; Ude, C.M.; Onyia, A.; Ogu, E.O. [Enugu State Univ. of Science and Technology (Nigeria). Faculty of Applied Natural Sciences] [Enugu State Univ. of Science and Technology (Nigeria). Faculty of Applied Natural Sciences; Okafor, M.; Ezejiofor, E. [Nnamdi Azikiwe Univ., Awka (Nigeria). Dept. of Applied Microbiology] [Nnamdi Azikiwe Univ., Awka (Nigeria). Dept. of Applied Microbiology

    1997-12-31T23:59:59.000Z

    The effect of combined heat treatment and acid hydrolysis (various concentrations) on cassava grate waste (CGW) biomass for ethanol production was investigated. At high concentrations of H{sub 2}SO{sub 4} (1--5 M), hydrolysis of the CGW biomass was achieved but with excessive charring or dehydration reaction. At lower acid concentrations, hydrolysis of CGW biomass was also achieved with 0.3--0.5 M H{sub 2}SO{sub 4}, while partial hydrolysis was obtained below 0.3 M H{sub 2}SO{sub 4} (the lowest acid concentration that hydrolyzed CGW biomass) at 120 C and 1 atm pressure for 30 min. A 60% process efficiency was achieved with 0.3 M H{sub 2}SO{sub 4} in hydrolyzing the cellulose and lignin materials present in the CGW biomass. High acid concentration is therefore not required for CGW biomass hydrolysis. The low acid concentration required for CGW biomass hydrolysis, as well as the minimal cost required for detoxification of CGW biomass because of low hydrogen cyanide content of CGW biomass would seem to make this process very economical. From three liters of the CGW biomass hydrolysate obtained from hydrolysis with 0.3M H{sub 2}SO{sub 4}, ethanol yield was 3.5 (v/v%) after yeast fermentation. However, although the process resulted in gainful utilization of CGW biomass, additional costs would be required to effectively dispose new by-products generated from CGW biomass processing.

  11. Coherent Atom Optics With Fast Metastable Beams: Metastable Helium Diffraction By 1D and 2D Magnetized Reflection Gratings

    SciTech Connect (OSTI)

    Grucker, J.; Baudon, J.; Karam, J.-C.; Perales, F.; Ducloy, M. [Laboratoire de Physique des Lasers, UMR-CNRS 7538, Universite Paris 13, 99, Avenue J.B. Clement, 93430-Villetaneuse (France); Bocvarski, V. [Institute of Physics, Pregrevica 118, 11080 - Belgrade-Zemun (Serbia and Montenegro)

    2007-04-23T23:59:59.000Z

    1D and 2D reflection gratings (Permalloy stripes or dots deposited on silicon), immersed in an external homogeneous static magnetic field, are used to study 1D and 2D diffraction of fast metastable helium atoms He* (23S1). Both the grazing incidence used here and the repulsive potential (for sub-level m = -1) generated by the magnetisation reduce the quenching effect. This periodically structured potential is responsible for the diffraction in the incidence plane as well as for the diffraction in the perpendicular plane.

  12. GNOSIS: THE FIRST INSTRUMENT TO USE FIBER BRAGG GRATINGS FOR OH SUPPRESSION

    SciTech Connect (OSTI)

    Trinh, Christopher Q.; Ellis, Simon C.; Bland-Hawthorn, Joss; Bryant, Julia; O'Byrne, John [Sydney Institute for Astronomy, School of Physics, The University of Sydney, NSW 2006 (Australia); Lawrence, Jon S.; Horton, Anthony J.; Shortridge, Keith; Case, Scott; Colless, Matthew; Gers, Luke; Lee, Steve; Miziarski, Stan [Australian Astronomical Observatory, 105 Delhi Road, North Ryde, P.O. Box 915, NSW 1670 (Australia); Leon-Saval, Sergio G. [Institute of Photonics and Optical Science, School of Physics, University of Sydney, NSW 2006 (Australia); Couch, Warrick; Glazebrook, Karl [Centre for Astrophysics and Supercomputing, Swinburne University of Technology, P.O. Box 218, Hawthorn, VIC 3122 (Australia); Freeman, Kenneth [Research School of Astronomy and Astrophysics, Australian National University, Weston Creek, ACT 2611 (Australia); Loehmannsroeben, Hans-Gerd [innoFSPEC-Institut fuer Chemie/Physikalische Chemie, Universitaet Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam-Golm (Germany); Haynes, Roger; Roth, Martin M., E-mail: c.trinh@physics.usyd.edu.au [innoFSPEC-Leibniz-Institut fuer Astrophysik Potsdam, An der Sternwarte 16, D-14482 Potsdam (Germany); and others

    2013-02-01T23:59:59.000Z

    The near-infrared is an important part of the spectrum in astronomy, especially in cosmology because the light from objects in the early universe is redshifted to these wavelengths. However, deep near-infrared observations are extremely difficult to make from ground-based telescopes due to the bright background from the atmosphere. Nearly all of this background comes from the bright and narrow emission lines of atmospheric hydroxyl (OH) molecules. The atmospheric background cannot be easily removed from data because the brightness fluctuates unpredictably on short timescales. The sensitivity of ground-based optical astronomy far exceeds that of near-infrared astronomy because of this long-standing problem. GNOSIS is a prototype astrophotonic instrument that utilizes 'OH suppression fibers' consisting of fiber Bragg gratings and photonic lanterns to suppress the 103 brightest atmospheric emission doublets between 1.47 and 1.7 {mu}m. GNOSIS was commissioned at the 3.9 m Anglo-Australian Telescope with the IRIS2 spectrograph to demonstrate the potential of OH suppression fibers, but may be potentially used with any telescope and spectrograph combination. Unlike previous atmospheric suppression techniques GNOSIS suppresses the lines before dispersion and in a manner that depends purely on wavelength. We present the instrument design and report the results of laboratory and on-sky tests from commissioning. While these tests demonstrated high throughput ( Almost-Equal-To 60%) and excellent suppression of the skylines by the OH suppression fibers, surprisingly GNOSIS produced no significant reduction in the interline background and the sensitivity of GNOSIS+IRIS2 is about the same as IRIS2. It is unclear whether the lack of reduction in the interline background is due to physical sources or systematic errors as the observations are detector noise dominated. OH suppression fibers could potentially impact ground-based astronomy at the level of adaptive optics or greater. However, until a clear reduction in the interline background and the corresponding increasing in sensitivity is demonstrated optimized OH suppression fibers paired with a fiber-fed spectrograph will at least provide a real benefit at low resolving powers.

  13. First observation of a plasmon-mediated tunable photoresponse in a grating-gated InGaAs/InP HEMT for millimeter-wave detection

    E-Print Network [OSTI]

    Peale, Robert E.

    First observation of a plasmon-mediated tunable photoresponse in a grating-gated InGaAs/InP HEMT-radiation to plasmons in the two-dimensional electron gas (2DEG) of the HEMT. The resonant excitation of plasmons, which-scale frequency-agile mm-wave detectors, which may be scaled to THz frequencies. Keywords: HEMT, Plasmon

  14. October 1, 2003 / Vol. 28, No. 19 / OPTICS LETTERS 1823 Tuning of laser pulse shapes in grating-based compressors for

    E-Print Network [OSTI]

    Geddes, Cameron Guy Robinson

    October 1, 2003 / Vol. 28, No. 19 / OPTICS LETTERS 1823 Tuning of laser pulse shapes in grating, C. B. Schroeder, E. Esarey, and W. P. Leemans Lasers Optics and Accelerator Systems Integrated to optimize a laser-plasma electron accelerator. 2003 Optical Society of America OCIS codes: 320.5520, 320

  15. ZnS and ZnSe immersion gratings for astronomical high-resolution spectroscopy - evaluation of internal attenuation of bulk materials in the short NIR region

    SciTech Connect (OSTI)

    Ikeda, Y; Kobayashi, N; Kondo, S; Yasui, C; Kuzmenko, P J; Tokoro, H; Terada, H

    2009-08-12T23:59:59.000Z

    We measure the internal attenuation of bulk crystals of CVD-ZnS, CVD-ZnSe, Si, and GaAs, in the short near-infrared (sNIR) region to evaluate the possibility of astronomical immersion gratings with those high refractive index materials. We confirm that multispectral grade CVD-ZnS and CVD-ZnSe are best suited for the immersion gratings, with the smallest internal attenuation of {alpha}{sub att} = 0.01-0.03 cm{sup -1} among the major candidates. The measured attenuation is roughly in proportion to {lambda}{sup -2}, suggesting it is dominated by bulk scattering due to the polycrystalline grains rather than by absorption. The total transmittance in the immersion grating is estimated to be at least > 80 %, even for the spectral resolution of R = 300,000. Two potential problems, the scattered light by the bulk material and the degradation of the spectral resolution due to the gradient illumination in the diffracted beam, are investigated and found to be negligible for usual astronomical applications. Since the remaining problem, the difficulty of cutting grooves on CVD-ZnS and CVD-ZnSe, has recently been overcome by the nanoprecision fly-cutting technique, ZnS and ZnSe immersion gratings for astronomy can be technically realized.

  16. IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, VOL. 5, NO. 1, JANUARY/FEBRUARY 1999 75 Diffraction Grating Scanners Using

    E-Print Network [OSTI]

    Merat, Francis L.

    THERE is an increasing need in today's marketplace to develop low-cost high-precision optical scanners for a variety with single and pyramidal diffraction grating elements fabricated on the polished surface of large-area rotors, the technology has advanced toward optical applications [2]. A 20- m-tall reflective nickel polygon, plated

  17. Reproducible strain measurement in electronic devices by applying integer multiple to scanning grating in scanning moir fringe imaging

    SciTech Connect (OSTI)

    Kim, Suhyun, E-mail: u98kim@surface.phys.titech.ac.jp; Jung, Younheum; Kim, Joong Jung; Lee, Sunyoung; Lee, Haebum [Memory Analysis Science and Engineering Group, Samsung Electronics, San #16 Hwasung-city, Gyeonggi-Do 445-701 (Korea, Republic of); Kondo, Yukihito [EM Business Unit, JEOL Ltd., 3-1-2 Musashino, Akishima, Tokyo 196-8558 (Japan)

    2014-10-15T23:59:59.000Z

    Scanning moir fringe (SMF) imaging by high-angle annular dark field scanning transmission electron microscopy was used to measure the strain field in the channel of a transistor with a CoSi{sub 2} source and drain. Nanometer-scale SMFs were formed with a scanning grating size of d{sub s} at integer multiples of the Si crystal lattice spacing d{sub l} (d{sub s} ? nd{sub l}, n = 2, 3, 4, 5). The moir fringe formula was modified to establish a method for quantifying strain measurement. We showed that strain fields in a transistor measured by SMF images were reproducible with an accuracy of 0.02%.

  18. Enhanced Diffraction from a Grating on the Surface of a Negative-Index Metamaterial D. R. Smith, P. M. Rye, J. J. Mock, D. C. Vier, and A. F. Starr

    E-Print Network [OSTI]

    Nemat-Nasser, Sia

    Enhanced Diffraction from a Grating on the Surface of a Negative-Index Metamaterial D. R. Smith, P be carefully reexamined in the context of negative-index media. For example, in an analysis of the imaging

  19. Measurement of electron-hole friction in an n-doped GaAs/AlGaAs quantum well using optical transient-grating spectroscopy

    SciTech Connect (OSTI)

    Yang, Luyi; Koralek, J. D.; Orenstein, J.; Tibbetts, D. R.; Reno, J. L.; Lilly, M. P.

    2011-04-26T23:59:59.000Z

    We use phase-resolved transient grating spectroscopy to measure the drift and diffusion of electron-hole density waves in a semiconductor quantum well. The unique aspects of this optical probe allow us to determine the frictional force between a two-dimensional Fermi liquid of electrons and a dilute gas of holes. Knowledge of electron-hole friction enables prediction of ambipolar dynamics in high-mobility electron systems.

  20. Transient grating measurements of ambipolar diffusion and carrier recombination in InGaP/InAlP multiple quantum wells and InGaP bulk

    SciTech Connect (OSTI)

    Prasad, M.; Martinez, O.E.; Menoni, C.S. [Colorado State Univ., Fort Collins, CO (United States)

    1994-03-01T23:59:59.000Z

    The ambipolar diffusion coefficient and carrier recombination lifetime in InGaP/InAlP multiple quantum wells and InGaP epitaxial layers grown by gas source molecular beam epitaxy have been determined by measuring the diffraction efficiency decay of transient gratings induced by picosecond laser pulses. The multiple quantum well room temperature ambipolar diffusion coefficient of carrier transport parallel to the growth plane was measured to be approximately half that of the bulk material. 17 refs., 2 figs.

  1. Ultrasonic generator and detector using an optical mask having a grating for launching a plurality of spatially distributed, time varying strain pulses in a sample

    DOE Patents [OSTI]

    Maris, Humphrey J. (Barrington, RI)

    2003-01-01T23:59:59.000Z

    A method and a system are disclosed for determining at least one characteristic of a sample that contains a substrate and at least one film disposed on or over a surface of the substrate. The method includes a first step of placing a mask over a free surface of the at least one film, where the mask has a top surface and a bottom surface that is placed adjacent to the free surface of the film. The bottom surface of the mask has formed therein or thereon a plurality of features for forming at least one grating. A next step directs optical pump pulses through the mask to the free surface of the film, where individual ones of the pump pulses are followed by at least one optical probe pulse. The pump pulses are spatially distributed by the grating for launching a plurality of spatially distributed, time varying strain pulses within the film, which cause a detectable change in optical constants of the film. A next step detects a reflected or a transmitted portion of the probe pulses, which are also spatially distributed by the grating. A next step measures a change in at least one characteristic of at least one of reflected or transmitted probe pulses due to the change in optical constants, and a further step determines the at least one characteristic of the sample from the measured change in the at least one characteristic of the probe pulses. An optical mask is also disclosed herein, and forms a part of these teachings.

  2. Ultrasonic generator and detector using an optical mask having a grating for launching a plurality of spatially distributed, time varying strain pulses in a sample

    DOE Patents [OSTI]

    Maris, Humphrey J. (Barrington, RI)

    2002-01-01T23:59:59.000Z

    A method and a system are disclosed for determining at least one characteristic of a sample that contains a substrate and at least one film disposed on or over a surface of the substrate. The method includes a first step of placing a mask over a free surface of the at least one film, where the mask has a top surface and a bottom surface that is placed adjacent to the free surface of the film. The bottom surface of the mask has formed therein or thereon a plurality of features for forming at least one grating. A next step directs optical pump pulses through the mask to the free surface of the film, where individual ones of the pump pulses are followed by at least one optical probe pulse. The pump pulses are spatially distributed by the grating for launching a plurality of spatially distributed, time varying strain pulses within the film, which cause a detectable change in optical constants of the film. A next step detects a reflected or a transmitted portion of the probe pulses, which are also spatially distributed by the grating. A next step measures a change in at least one characteristic of at least one of reflected or transmitted probe pulses due to the change in optical constants, and a further step determines the at least one characteristic of the sample from the measured change in the at least one characteristic of the probe pulses. An optical mask is also disclosed herein, and forms a part of these teachings.

  3. Fabrication and testing of diamond-machined gratings in ZnSe, GaP, and bismuth germanate for the near infrared and visible

    SciTech Connect (OSTI)

    Kuzmenko, P J; Little, S L; Ikeda, Y; Kobayashi, N

    2008-06-22T23:59:59.000Z

    High quality immersion gratings for infrared applications have been demonstrated in silicon and germanium. To extend this technology to shorter wavelengths other materials must be investigated. We selected three materials, zinc selenide, gallium phosphide and bismuth germanate (Bi{sub 4}Ge{sub 3}O{sub 12}), based on high refractive index, good visible transmission and commercial availability in useful sizes. Crystal samples were diamond turned on an ultra-precision lathe to identify preferred cutting directions. Using this information we diamond-flycut test gratings over a range of feed rates to determine the optimal cutting conditions. For both ZnSe and GaP good surface quality was achieved at feed rates up to 1.0 cm/minute using a special compound angle diamond tool with negative rake angles on both cutting surfaces. The surface roughness of the groove facets was about 4 nm. A Zygo interferometer measured grating wavefront errors in reflection. For the ZnSe the RMS error was < {lambda}/20 at 633nm. More extensive testing was performed with a HeNe laser source and a cooled CCD camera. These measurements demonstrated high relative diffraction efficiency (> 80%), low random groove error (2.0 nm rms), and Rowland ghost intensities at < 0.1%. Preliminary tests on bismuth germanate show high tool wear.

  4. Experimental comparison of grating- and propagation-based hard X-ray phase tomography of soft tissue

    SciTech Connect (OSTI)

    Lang, S.; Schulz, G.; Mller, B. [Biomaterials Science Center, University of Basel, Basel (Switzerland); Zanette, I., E-mail: irene.zanette@tum.de [Physik-Department und Institut fr Medizintechnik, Technische Universitt Mnchen, Garching (Germany); European Synchrotron Radiation Facility, Grenoble (France); Dominietto, M. [Biomaterials Science Center, University of Basel, Basel (Switzerland); Institute for Biomedical Engineering, ETH Zrich, Zrich (Switzerland); Langer, M. [European Synchrotron Radiation Facility, Grenoble (France); Universit de Lyon, CREATIS, CNRS UMR5220, Inserm U1044, INSA-LYON, Universit de Lyon 1, Villeurbane (France); Rack, A.; Le Duc, G. [European Synchrotron Radiation Facility, Grenoble (France); David, C. [Laboratory for Micro- and Nanotechnology, Paul Scherrer Institut, Villigen (Switzerland); Mohr, J. [Institute of Microstructure Technology, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen (Germany); Pfeiffer, F. [Physik-Department und Institut fr Medizintechnik, Technische Universitt Mnchen, Garching (Germany); Weitkamp, T. [European Synchrotron Radiation Facility, Grenoble (France); Synchrotron Soleil, Gif-sur-Yvette (France)

    2014-10-21T23:59:59.000Z

    When imaging soft tissues with hard X-rays, phase contrast is often preferred over conventional attenuation contrast due its superior sensitivity. However, it is unclear which of the numerous phase tomography methods yields the optimized results at given experimental conditions. Therefore, we quantitatively compared the three phase tomography methods implemented at the beamline ID19 of the European Synchrotron Radiation Facility: X-ray grating interferometry (XGI), and propagation-based phase tomography, i.e., single-distance phase retrieval (SDPR) and holotomography (HT), using cancerous tissue from a mouse model and an entire heart of a rat. We show that for both specimens, the spatial resolution derived from the characteristic morphological features is about a factor of two better for HT and SDPR compared to XGI, whereas the XGI data generally exhibit much better contrast-to-noise ratios for the anatomical features. Moreover, XGI excels in fidelity of the density measurements, and is also more robust against low-frequency artifacts than HT, but it might suffer from phase-wrapping artifacts. Thus, we can regard the three phase tomography methods discussed as complementary. The application will decide which spatial and density resolutions are desired, for the imaging task and dose requirements, and, in addition, the applicant must choose between the complexity of the experimental setup and the one of data processing.

  5. Age of Pre-late-Wisconsin Glacial-Estuarine Sedimentation, Bristol Bay, Alaska

    E-Print Network [OSTI]

    Ingólfsson, ?lafur

    stimu- lated and thermoluminescence (IRSL and TL) techniques. Analy- sis of modern and 14 C-dated of northeastern Bristol Bay, southwestern Alaska, was dated using a variety of approaches, including infrared techniques. IRSL seems to be especially well suited for dating, with resolution on time scales of

  6. Page 318 Courses: Geography (GEOG) Sonoma State University 2012-2013 Catalog GEOG 314C FiEld ExpEriEnCE BEyOnd nOrthErn CaliFOrnia (2)

    E-Print Network [OSTI]

    Ravikumar, B.

    the United States (2-3). Cultural and physical studies of people and laces through travel, observation studies of people and laces through travel, observation and interaction, oral and written analy- sis analysis, report writing and the use of field equipment. Field work will be conducted mainly

  7. A method for robust variable selection with significance assessment

    E-Print Network [OSTI]

    Rosasco, Lorenzo

    and control. Such an analy- sis encompasses, at least two steps, gene selection and model assessment. When architecture to assess the statistical significance of the model via cross validation and permutation testing. Finally we challenge the system on real data experiments, and study its performance when changing variable

  8. Inferring Architectural Designs from Physical Sketches: Application to Daylighting Analysis

    E-Print Network [OSTI]

    Varela, Carlos

    Inferring Architectural Designs from Physical Sketches: Application to Daylighting Analysis Barbara and a closed, 3D triangle mesh representation is constructed. We apply the system to architectural daylighting, daylighting analy- sis, and image processing. ACM Classification Keywords H.5.1 Information Interfaces

  9. WELDING RESEARCH -s51WELDING JOURNAL

    E-Print Network [OSTI]

    DuPont, John N.

    WELDING RESEARCH -s51WELDING JOURNAL ABSTRACT. Electron microprobe analy- sis was utilized to examine the gradient of alloying elements across the weld inter- face of austenitic/ferritic dissimilar alloy welds. The concentration gradients were converted to martensite start (Ms) tem- perature gradients

  10. Discriminating Groups of Organisms Richard E. Strauss

    E-Print Network [OSTI]

    Strauss, Richard E.

    the multivariate character space, in the presence of correlations among variables. And multivariate analysis function analy- sis or canonical variate analysis), Mahalanobis distance, and multivariate analysis a number of things about them. Can we discriminate the groups based on morphometric traits? If so, how well

  11. Comparison of Simple Power Analysis Attack Resistant Algorithms for an Elliptic Curve

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Comparison of Simple Power Analysis Attack Resistant Algorithms for an Elliptic Curve Cryptosystem, University College Cork Email: {e.popovici}@ucc.ie Abstract-- Side channel attacks such as Simple Power Analy- sis(SPA) attacks provide a new challenge for securing algorithms from an attacker. Algorithms

  12. Advanced Signal Processing Techniques for Fault Detection and Diagnosis in a Wind Turbine

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    rotor bars and bearing damages. Index Terms--Wind turbines, motor current signature analy- sis, time factors, such as wind speed and acoustic noise, wind parks are being mainly constructed offshore. Studies. Different methods of fault detection exist. These include monitoring of the acoustic vibration, internal

  13. DOI: 10.1093/jxb/erg032 The desynaptic (dy) and desynaptic1 (dsy1) mutations in

    E-Print Network [OSTI]

    Bass, Hank W.

    .) cause distinct telomere-misplacement phenotypes during meiotic prophase Hank W. Bass1 , Stefano J. Analy- sis of three-dimensional uorescence in situ hybridiz- ation (3-D FISH) image data has been using 3-D FISH as an assay. Two mutants, desynaptic (dy) and desyn- aptic1 (dsy1), were found to exhibit

  14. A GasdynamicAcoustic Model of a Bird Scare Gun

    E-Print Network [OSTI]

    Eindhoven, Technische Universiteit

    ,000--200,000 explosions is attainable. The mechanism is simple. A carefullycontrolled mixture of air and propane or butane gas (stoichiometric 1 mixture, or a little bit richer than that) is periodically (every 5 or 10 into the open air. An interesting detail in the design gave, without any further analy sis, already insight

  15. A Gasdynamic-Acoustic Model of a Bird Scare Gun

    E-Print Network [OSTI]

    Rienstra, Sjoerd W.

    ,000200,000 explosions is attainable. The mechanism is simple. A carefully-controlled mixture of air and propane or butane gas (stoichiometric1 mixture, or a little bit richer than that) is periodically (every 5 or 10 into the open air. An interesting detail in the design gave, without any further analy- sis, already insight

  16. Service and Resource Discovery Supports over P2P Overlays

    E-Print Network [OSTI]

    Ricci, Laura

    during the inspection with themselves. By employing this analytic method at the early phase of data development or service design. Starting with a discussion on the exploratory data analy- sis, we articulate a dataset of mobile phone usage, geographic logs, and social interaction data. A novel method

  17. Extraction of the tunnel magnetocapacitance with two-terminal measurements

    E-Print Network [OSTI]

    Lin, Minn-Tsong

    Extraction of the tunnel magnetocapacitance with two-terminal measurements Yin-Ming Chang,1 Kai in the four-terminal measurement with high frequency operation, two-terminal approach was developed circuit analy- sis with four-terminal complex impedance measurements. Aside from their conclusion

  18. A Microcode-Based Environment for Non-Invasive Performance Analysis Stephen W. Melvin

    E-Print Network [OSTI]

    Patt, Yale

    an environment which al- lows us to collect data for performance analy- sis by modifying the microcode of a VAX in (11. Our environment is based on microcode modifica- tions to a VAX 8600. These modifications include ad- ditional machine level instructions as well as side effects to standard VAX instructio

  19. A Domain-Specific Safety Analysis for Digital Nuclear Plant Protection Systems

    E-Print Network [OSTI]

    A Domain-Specific Safety Analysis for Digital Nuclear Plant Protection Systems Sanghyun Yoon through safety analy- sis is strongly mandated for safety-critical systems. Nuclear plant protection. INTRODUCTION Safety-critical systems (e.g. nuclear power plants and air- planes) require rigorous quality

  20. Beyond PVM 3.4: What We've Learned, What's Next, and Why

    E-Print Network [OSTI]

    Scott, Stephen L.

    from this analy sis is that PVM, MPI, and similar paradigms suffer from a monolithic approach PVM: each mandates a particular programming style and builds a monolithic operating environment into which user programs must ``fit. '' MPI1, for example, mandates an SPMDstyle static process model

  1. Fourier Analysis In addition to their inestimable importance in mathematics and its applications,

    E-Print Network [OSTI]

    Olver, Peter

    Chapter 13 Fourier Analysis In addition to their inestimable importance in mathematics and its applications, Fourier series also serve as the entry point into the wonderful world of Fourier analy- sis the theory and enlarging the scope of applications of Fourier­inspired methods. New directions in Fourier

  2. Analysis of Country-wide Internet Outages Caused by Alberto Dainotti

    E-Print Network [OSTI]

    California at San Diego, University of

    : Egypt and Libya. Our analy- sis relies on multiple sources of large-scale data already available other insights, we detected what we believe were Libya's attempts to test firewall- based blocking on February 11. Four days later, similar protests erupted in Libya, calling for an end to the Gaddafi regime

  3. 423A HIGH-PERFORMANCE COMPUTING/NUMERICAL The International Journal of High Performance Computing Applications,

    E-Print Network [OSTI]

    Higham, Nicholas J.

    423A HIGH-PERFORMANCE COMPUTING/NUMERICAL The International Journal of High Performance Computing and barriers in the development of high-performance computing (HPC) algorithms and software. The activity has computing, numerical analy- sis, roadmap, applications and algorithms, software 1 The High-performance

  4. What is microfluidics? It is the science and technology of systems that process or manipulate small (109

    E-Print Network [OSTI]

    Prentiss, Mara

    What is microfluidics? It is the science and technology of systems that process or manipulate small of micrometres. The first applications of microfluidic technologies have been in analy- sis, for which they offer for analysis; and small footprints for the analytical devices1 . Microfluidics exploits both its most obvious

  5. Securing Energy Metering Software with Automatic Source Code Correction

    E-Print Network [OSTI]

    Neves, Nuno

    of energy production have been fostering the monitoring and analy- sis of electricity consumption for the country [7]. Many of the meters provide energy consumption informa- tion that can be stored and processed in graphical format, analyze consumption trends, identify peak demand, and raise alarms about anomalous

  6. Lightweight Object Oriented Structure Analysis: Tools for Building Tools to Analyze Molecular Dynamics Simulations

    E-Print Network [OSTI]

    , such as carma/ grcarma. There are nearly 14,000 lines of C code in carma and grcarma, the graphical front. The "actions" module, which contains many analy- sis routines, consists of nearly 20,000 lines of C code units. Actions use a common programming interface via subclassing and the "command" design pattern

  7. T-TV-T^ sr^i Ris-R-597(EN) A ComputerProgram forReliability

    E-Print Network [OSTI]

    T-TV-T^ sr^i Ris-R-597(EN) SIMON A ComputerProgram forReliability and Statistical Analysis using and Statistical Analysis using Monte Carlo Simulation Program Description and Manual Hans ErikKngs and Kmt for calculation of reliability and statistical analy- sis. The program is of the Monte Carlo type

  8. August 23, 2005 13:18 WSPC/Book Trim Size for 9in x 6in paper Quantification of Emergent Behaviors

    E-Print Network [OSTI]

    Pitti, Alexandre

    as the control parameter governing phase transitions in movement space. Through a frequency-domain analy- sis, degrees of freedom problem, wavelet transform, spectral bifur- cation map, wavelet bifurcation map. 1 to autonomously explore, discover, and select possibilities for action and movement? These are difficult issues

  9. www.wiley-vch.de SundmacherKienlePesch

    E-Print Network [OSTI]

    Dettweiler, Michael

    Fuel Cells (MCFC). It covers different aspects of cell operation, analy- sis, optimization and control1 www.wiley-vch.de SundmacherKienlePesch BerndtHuppmann(Eds.) MoltenCarbonateFuelCells This is the first book being purely focused on one of the most important fuel cell technolo- gies, Molten Carbonate

  10. Information Visualization Evaluation in Large Companies: Challenges, Experiences and Recommendations

    E-Print Network [OSTI]

    Isenberg, Petra

    environments, whereas field experiments are a compromise strategy where features of the system are ma visualization and visual analyt- ics tools within a large automotive company (BMW Group). From our own visualization in general. Within such an environment a wide range of real data analy- sis problems, tasks

  11. A Conceptual Framework for Semantic Case-based Safety Analysis Olawande Daramola, Tor Stlhane

    E-Print Network [OSTI]

    .biffl}@tuwien.ac.at Abstract Hazard and Operability (HAZOP) Analysis and Fail- ure Mode and Effect Analysis (FMEA) are among-based framework for safety analy- sis, which facilitates the reuse of previous HAZOP and FMEA experiences in order application. Key words: Safety analysis, HAZOP, FMEA, ontology, requirements, case-based reasoning, natural

  12. E-Print Network 3.0 - analys med fokus Sample Search Results

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

    Universitet Collection: Computer Technologies and Information Sciences 17 Energioptimering p renseanlg Peter Andreasen, DHI Summary: energieffektiv drift? Nej Det er meget...

  13. Damage Detection of CFRP Plates by Full-Spectral Analysis of a Fibre Bragg Grating Sensor Signal

    SciTech Connect (OSTI)

    Mizutani, Yoshihiro [Optical Non-Destructive Testing Laboratory, Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2600 GB Delft (Netherlands); Solid and Structures Engineering Laboratory, Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, Japan, 2-12-1-I1-70, Ookayama, Meguro-ku, Tokyo 152-8552 (Japan); Groves, Roger M. [Optical Non-Destructive Testing Laboratory, Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2600 GB Delft (Netherlands)

    2010-05-28T23:59:59.000Z

    This paper describes the measurement of average strain, strain distribution and vibration of cantilever beam made of Carbon Fiber Reinforced Plastics (CFRP), using a single Fibre Bragg Grating (FBG) sensor mounted on the beam surface. Average strain is determined from the displacement of the peak wavelength of reflected light from the FBG sensor. Unstrained reference FBG sensors were used to compensate for temperature drift and the photoelastic coefficient (P{sub e}), which was used to calculate the gauge factor. Measured strains agree with those measured by a resistance foil strain gauge attached to the sample. Stress distributions are measured by monitoring the variation in the full width half maximum (FWHM) values of the reflected spectrum, using a proposed optical analytical model, described in the paper. FWHM values were measured for both the cantilever test beam and a for a reference beam, loaded using a four-point bending rig. The trend of the stress distribution for the test beam matches with our analytical model, however with a relatively large noise present in the experimentally determined data. The vibration of cantilever beam was measured by temporal analysis of the peak reflection wavelength. This technique is very stable as measurements are not affected by variations in the signal amplitude. Finally an application of FBG sensors for damage detection of CFRP plates is demonstrated, by measuring the average strain and natural frequency. With small defects of different sizes applied to the CFRP plate, average strains were seen to increase with damage size and the natural frequency decreased with damage size.

  14. SIS a new SFF method based on powder

    E-Print Network [OSTI]

    Asiabanpour, Bahram - Department of Engineering and Technology, Texas State University

    . This approach, used by SLS and 3D printing, is able to create thin and uniformly dense powder layers. Other

  15. Circadian Solar formerly AdvanceSis | 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 directedAnnual Siteof EnergyInnovationin Urban Transport | OpenChristianCimarron Electric

  16. Quantitative electron density characterization of soft tissue substitute plastic materials using grating-based x-ray phase-contrast imaging

    SciTech Connect (OSTI)

    Sarapata, A.; Chabior, M.; Zanette, I.; Pfeiffer, F. [Lehrstuhl fr Biomedizinische Physik, Physik-Department and Institut fr Medizintechnik, Technische Universitt Mnchen, 85748 Garching (Germany); Cozzini, C.; Sperl, J. I.; Bequ, D. [GE Global Research, 85748 Garching (Germany); Langner, O.; Coman, J. [QRM GmbH, Mhrendorf (Germany); Ruiz-Yaniz, M. [Lehrstuhl fr Biomedizinische Physik, Physik-Department and Institut fr Medizintechnik, Technische Universitt Mnchen, 85748 Garching (Germany); European Synchrotron Radiation Facility, Grenoble (France)

    2014-10-15T23:59:59.000Z

    Many scientific research areas rely on accurate electron density characterization of various materials. For instance in X-ray optics and radiation therapy, there is a need for a fast and reliable technique to quantitatively characterize samples for electron density. We present how a precise measurement of electron density can be performed using an X-ray phase-contrast grating interferometer in a radiographic mode of a homogenous sample in a controlled geometry. A batch of various plastic materials was characterized quantitatively and compared with calculated results. We found that the measured electron densities closely match theoretical values. The technique yields comparable results between a monochromatic and a polychromatic X-ray source. Measured electron densities can be further used to design dedicated X-ray phase contrast phantoms and the additional information on small angle scattering should be taken into account in order to exclude unsuitable materials.

  17. To Study the Effect of Grating Length on Propagating Modes in Bragg Filters with AlxGa1-xN/GaN Material Composition

    E-Print Network [OSTI]

    Sourangsu Banerji

    2014-05-28T23:59:59.000Z

    In this paper, the forward and backward propagating modes in an optical waveguide structure namely the fiber Bragg filter also considered as a one dimensional photonic crystal, are analytically computed as a function of grating length for coupled optical modes. AlxGa1-xN/GaN material composition is considered as a unit block of the periodic organization, and refractive index of AlxGa1-xN/GaN is taken to be dependent on material composition, bandgap and operating wavelength following Adachi's model. Expressions of propagating wave are derived using coupled mode theory. Simulated results help us to study the propagation of forward and backward wave propagating modes inside fiber and waveguide devices.

  18. A planar-type surface-wave plasma source with a subwavelength diffraction grating inclusion for large-area plasma applications

    SciTech Connect (OSTI)

    Chen Zhaoquan; Liu Minghai; Tang Liang; Hu Peng; Hu Xiwei [College of Electrical and Electronic Engineering, HuaZhong University of Science and Technology, WuHan, HuBei 430074 (China)

    2009-07-01T23:59:59.000Z

    The electromagnetic wave through the subwavelength diffraction grating can be largely absorbed by surface-wave plasmas (SWPs). A SWP source is built with two slot-array antennas element. Due to the dissipation of surface waves in overdense plasmas, this source can provide remarkable discharge efficiency of 4.4 cm{sup 2}/W experimentally and 96% of incident power numerically. When the applied power as low as 200 W is supplied to the SWP source, a homogeneous plasma with the uniform area up to 14x36 cm{sup 2} and the plasma density up to 1.04x10{sup 18} m{sup -3} is generated under the quartz slab. By varying the incident power and gas pressure, the parameter of plasmas can be easily controlled without density jumping. Moreover, the characters of bi-Maxwellian electron energy distribution prove that our SWP source yield plasmas by surface heating actually. These excellent performances make the proposed source meet the requirements in large-area plasma processing and also give its advices for plasmas heating in next meter-size SWP sources.

  19. Calculations of deflections on thin rectangular plates using a digital computer

    E-Print Network [OSTI]

    Berry, Laban Edward

    1964-01-01T23:59:59.000Z

    integration and the trapezoidal method of inte- gration were tested for speed and accuracy. The computational system which used the trapezoidal method of integration was extremely inaccurate. The re- sults obtained from this system agreed with values pre... the integration in Equation 2. 3 is performed. It is important, therefore, that an accurate method of integration be used. In the computational system developed to perform a Navier analy- sis on a uniformly loaded, simply supported plate, both Gaussian...

  20. A GIS-based Spatial Model for Predicting Habitat Suitability for Juvenile Mutton Snapper (Lutjanus analis) in Belize

    E-Print Network [OSTI]

    redes de reas Marinas Protegidas. Este trabajo evala el uso del enfoque ecosistmico en el manejo. Parmetros ecosistmicos de entrada incluyeron tipo de habitat marino, distancia de nado a los sitios de

  1. Examen cri?tico-anali?tico de las ilustraciones encontradas en tres Celestinas: (Burgos, 1499; Sevilla, 1502; Valencia, 1514)

    E-Print Network [OSTI]

    Reyes-Dura?n, Marti?n

    1992-01-01T23:59:59.000Z

    tallador profesional para ilustrar el texto. Se disminuyen los delicados y finos detalles del tallado terminado por los extranjeros (italiano y germ5nico) ya que descollaban las nuevas corrientes espanolas de ilustracion, evidenciada en el estilo...

  2. Examen cri?tico-anali?tico de las ilustraciones encontradas en tres Celestinas: (Burgos, 1499; Sevilla, 1502; Valencia, 1514)

    E-Print Network [OSTI]

    Reyes-Dura?n, Marti?n

    1992-01-01T23:59:59.000Z

    , la cual se manifesto tan claramente en la Edad Media, se debio a la invencion de la imprenta ligada a su aceptacion por parte de un mundo cambiante y 5vido por el saber (DeVinne 46). Tambien esta relacionado el desarrollo de la imprenta con la...

  3. Warm absorbers in X-rays (WAX), a comprehensive high resolution grating spectral study of a sample of Seyfert galaxies: I. A global view and frequency of occurrence of warm absorbers

    E-Print Network [OSTI]

    Laha, Sibasish; Dewangan, Gulab C; Chakravorty, Susmita; Kembhavi, Ajit K

    2014-01-01T23:59:59.000Z

    We present results from a homogeneous analysis of the broadband 0.3-10 keV CCD resolution as well as of soft X-ray high-resolution grating spectra of a hard X-ray flux-limited sample of 26 Seyfert galaxies observed with XMM-Newton. Our goal is to characterise the warm absorber (WA) properties along the line-of-sight to the active nucleus. We significantly detect WAs in $65\\%$ of the sample sources. Our results are consistent with WAs being present in at least half of the Seyfert galaxies in the nearby Universe, in agreement with previous estimates . We find a gap in the distribution of the ionisation parameter in the range $0.5<\\log\\xi<1.5$ which we interpret as a thermally unstable region for WA clouds. This may indicate that the warm absorber flow is probably constituted by a clumpy distribution of discrete clouds rather than a continuous medium. The distribution of the WA column densities for the sources with broad Fe K$\\alpha$ lines are similar to those sources which do not have broadened emission l...

  4. Warm absorbers in X-rays (WAX), a comprehensive high resolution grating spectral study of a sample of Seyfert galaxies: I. A global view and frequency of occurrence of warm absorbers

    E-Print Network [OSTI]

    Laha, Sibasish; Dewangan, Gulab C; Chakravorty, Susmita; Kembhavi, Ajit K

    2014-01-01T23:59:59.000Z

    We present results from a homogeneous analysis of the broadband 0.3-10 keV CCD resolution as well as of soft X-ray high-resolution grating spectra of a hard X-ray flux-limited sample of 26 Seyfert galaxies observed with XMM-Newton. Our goal is to characterise the warm absorber (WA) properties along the line-of-sight to the active nucleus. We significantly detect WAs in $65\\%$ of the sample sources. Our results are consistent with WAs being present in at least half of the Seyfert galaxies in the nearby Universe, in agreement with previous estimates . We find a gap in the distribution of the ionisation parameter in the range $0.5warm absorber flow is probably constituted by a clumpy distribution of discrete clouds rather than a continuous medium. The distribution of the WA column densities for the sources with broad Fe K$\\alpha$ lines are similar to those sources which do not have broadened emission l...

  5. SIGNIFICANT ITEMS (Sis) FY 2010 House Appropriations Committee Report 111-220

    E-Print Network [OSTI]

    Items Adult Acute Leukemia - The Committee is encouraged by ongoing research on adult acute leukemia on the epigenetic regulation of gene expression that may contribute to progression and survival in acute leukemia. Recent studies show that there may be a distinct type of acute leukemia associated with a profound

  6. BEHAVIOR CHANGES IN SIS STD MODELS WITH SELECTIVE JAMES M. HYMAN + AND JIA LI #

    E-Print Network [OSTI]

    Hyman, James "Mac"

    the epidemic threshold. Key words. STD models, selective mixing, balance constraint, behavior changes% of the population is infected by human immunodeficiency virus (HIV) and that in the Bronx in New York City 13 of Energy under contracts W7405ENG36 and DOE Applied Mathematical Sciences Program contract KC07

  7. BEHAVIOR CHANGES IN SIS STD MODELS WITH SELECTIVE JAMES M. HYMAN AND JIA LI

    E-Print Network [OSTI]

    Hyman, James "Mac"

    the epidemic threshold. Key words. STD models, selective mixing, balance constraint, behavior changes% of the population is infected by human immunodeficiency virus (HIV) and that in the Bronx in New York City 13 of Energy under contracts W-7405-ENG-36 and DOE Applied Mathematical Sciences Program contract KC-07

  8. ComSIS Vol. 1, No. 1, February 2004 75 Network Models of Massive Datasets

    E-Print Network [OSTI]

    Butenko, Sergiy

    , biotechnology, medicine, finance, astrophysics, ecology, geographical information systems, etc. [2, 10 in data mining, which essentially represents partitioning the set of elements of a certain dataset

  9. Requests are subject to edit upon entering into SIS+ ACTIVITY LOG

    E-Print Network [OSTI]

    Farritor, Shane

    /note/descript -- -- -- -- 12/15/2007 ENG ENGR 300 Principles of Nuclear Engineering New Course -- -- -- -- 12/15/2007 ENG ENGR Energy Systems and Resources New Course -- -- -- -- 12/15/2007 ENG ENGR 411 Nuclear Reactor Theory New Course -- -- -- -- 12/15/2007 ENG ENGR 412 Nuclear Reactor Analysis New Course -- -- -- -- 12/15/2007 CBA

  10. Development of an Electrically Small Vivaldi Antenna: The CReSIS Aerial Vivaldi (CAV-A)

    E-Print Network [OSTI]

    Panzer, Benjamin Garrett

    2007-12-12T23:59:59.000Z

    in 1979 when Prasad and Mahapatra introduced the linear tapered slot antenna (LTSA) [39]. Gibson originated the exponentially tapered slot antenna (ETSA or Vivaldi) shortly thereafter [17]. Tapered slot antennas offer qualities such as efficiency... is coaxial cable. Linear Tapered Slot Antenna Figure 2.4 illustrates the geometry of the LTSA presented in [39]. As can be seen, the so- called taper of the slotline transmission line can be described as a linear function, thus the moniker, linear...

  11. Global behavior of a multi-group SIS epidemic model with age ...

    E-Print Network [OSTI]

    2005-10-22T23:59:59.000Z

    Dec 10, 2004 ... Security Agency (NSA) and Alfred P. Sloan Foundation. ... into the model may provide additional and important information which may be...

  12. Requests are subject to edit upon entering into SIS+ ACTIVITY LOG

    E-Print Network [OSTI]

    Farritor, Shane

    /15/08 JMC BRDC 469/869 Advanced Cinematography/Videography Prereq/note/descrip -- -- Yes -- 2/15/08 ASC CSCE

  13. Engineering applications of soil information system (sis): precision irrigation and drainage systems design

    E-Print Network [OSTI]

    Ceylan, Bilge Kagan

    2009-05-15T23:59:59.000Z

    that are currently employed in drainage design and construction were evaluated. A detailed market analysis was conducted with a focus on the industry stakeholders. A strategic strengths, weaknesses, opportunities and threats (SWOT) analysis was conducted...

  14. Phi decay: a relevant source for K- production at SIS energies?

    E-Print Network [OSTI]

    The HADES Collaboration; G. Agakishiev; A. Balanda; B. Bannier; R. Bassini; D. Belver; A. V. Belyaev; A. Blanco; M. Boehmer; J. L. Boyard; P. Braun-Munzinger; P. Cabanelas; E. Castro; S. Chernenko; T. Christ; M. Destefanis; J. Diaz; F. Dohrmann; A. Dybczak; T. Eberl; W. Enghardt; L. Fabbietti; O. V. Fateev; P. Finocchiaro; P. Fonte; J. Friese; I. Froehlich; T. Galatyuk; J. A. Garzon; R. Gernhaeuser; A. Gil1; C. Gilardi; M. Golubeva; D. Gonzalez-Diaz; F. Guber; M. Heilmann; T. Heinz; T. Hennino; R. Holzmann; A. Ierusalimov; I. Iori; A. Ivashkin; M. Jurkovic; B. Kaempfer; K. Kanaki; T. Karavicheva; D. Kirschner; I. Koenig; W. Koenig; B. W. Kolb; R. Kotte; F. Krizek; R. Kruecken; W. Kuehn; A. Kugler; A. Kurepin; S. Lang; J. S. Lange; K. Lapidus; T. Liu; L. Lopes; M. Lorenz; L. Maier; A. Mangiarotti; J. Markert; V. Metag; B. Michalska; J. Michel; D. Mishra; E. Moriniere; J. Mousa; C. Muentz; L. Naumann; J. Otwinowski; Y. C. Pachmayer; M. Palka; Y. Parpottas; V. Pechenov; O. Pechenova; T. PerezCavalcanti; J. Pietraszko; W. Przygoda; B. Ramstein; A. Reshetin; M. Roy-Stephan; A. Rustamov; A. Sadovsky; B. Sailer; P. Salabura; A. Schmah; E. Schwab; Yu. G. Sobolev; S. Spataro; B. Spruck; H. Stroebele; J. Stroth; C. Sturm; M. Sudol; A. Tarantola; K. Teilab; P. Tlusty; M. Traxler; R. Trebac; H. Tsertos; V. Wagner; M. Weber; M. Wisniowski; T. Wojcik; J. Wuestenfel; S. Yurevich; Y. V. Zanevsky; P. Zhou; P. Zumbruch

    2009-02-20T23:59:59.000Z

    We present phase space distributions and multiplicities of K+, K- and phi mesons produced in Ar+KCl reactions at a kinetic beam energy of 1.756 AGeV and measured with the HADES spectrometer. The inverse slope parameters and yields of kaons supplement the systematics of previous measurements. The percentage of K- mesons coming fromphi decay is found to be 18+- 7%.

  15. Longitudinal assessment of global and regional atrophy rates in Alzheimer's disease and dementia with Lewy bodies

    E-Print Network [OSTI]

    Mak, Elijah; Su, Li; Williams, Guy B.; Watson, Rosie

    2015-02-07T23:59:59.000Z

    statistical analysis of atrophy across subjects using SIENAr, an extension of SIENA from the FSL package (Bartsch et al., 2004). Built upon the result of the previous SIENA analy- sis, the edge displacement image was dilated for each subject, trans- formed... with Lewy bodies and Alzheimer3s disease using cortical pattern matching: diagnosis and gender effects. Neuroimage 23 (1), 325335. http://dx.doi.org/10.1016/j. neuroimage.2004.04.02615325380. Bartsch, A.J., De Stefano, N., Homola, G., Smith, S., 2004...

  16. Two-photon production of charged pion and kaon pairs

    E-Print Network [OSTI]

    Baringer, Philip S.

    1994-09-01T23:59:59.000Z

    calorizneter com- posed of 7800 thallium-doped cesium iodide (CsI) crys- tals. The barrel section of the CsI calorimeter forms an integral part of this analysis as the fine tower segmenta- tion allows for particle discrimination based on an analy- sis of shower... as the contamination from anni- hilation events, the two tracks must pass an acolinearity requirement: the angle between the two tracks must be more than 100 mrad away from back to back. Finally, the two tracks are required to project to well-understood regions...

  17. This book presents a data-rich case study across time of the Aydinli no-mads (Yrk) in Southeast Turkey. We use longitudinal network analy-

    E-Print Network [OSTI]

    White, Douglas R.

    structure, descent groups, relevant cohesive group- ings, and leadership factions as they are seen to change

  18. A study of helium-3 activation applied to the determination of oxygen in germanium

    E-Print Network [OSTI]

    Francis, Georgann

    1972-01-01T23:59:59.000Z

    of a new oxygen standard for trace analys1s, The feas1bility of using thin alum1num foils is ex- am1ned, and their use under experimental conditions is illustrated. iv ACKNOWLEDGENENTS I would like to gratefully acknowledge Professor E. A... (Muscovite) ranging 1n thick- ness from 10 to 13 microns were used as standards, 12, 7 micron alum1num foils served as degraders, and as supplementary beam monitors, Irradiation Terminal and Focusing Irradiation of samples was carried out using...

  19. Fiber Grating Moisture And Chemical Sensing System

    DOE Patents [OSTI]

    Schipani, Claudia (Turin, IT); Spano, Ennio (Turin, IT); Dalle Crode, Domenico (Turin, IT)

    2004-01-27T23:59:59.000Z

    A vane for a stator of a variable-geometry turbine, in particular for aeronautical engines, has an airfoil profile and a pair of hinge portions, which are carried by the airfoil profile and enable the airfoil profile to be coupled to a support structure of the stator so as to be rotatable about an axis of adjustment; the vane also has internal channels that allow a flow of air to pass through in order to cool the hinge portions.

  20. Multiorder rotating grating interferometer John Howard

    E-Print Network [OSTI]

    Howard, John

    , Research School of Physical Sciences,The Australian National University, Canberra, ACT 2601, Australia

  1. A computational inverse diffraction grating problem

    E-Print Network [OSTI]

    2012-02-29T23:59:59.000Z

    Mar 2, 2012 ... Consider the diffraction of a time-harmonic plane wave incident on a perfectly ... The mathematical questions on uniqueness and stability for.

  2. Material identification employing a grating spectrometer

    DOE Patents [OSTI]

    Gornushkin, Ignor B.; Winefordner, James D.; Smith, Benjamin W.

    2007-01-09T23:59:59.000Z

    Multi-ordered spectral data is obtained from various known substances and is stored in a spectral library. The identification of an unknown material is accomplished by correlating the sample's multi-ordered spectrum against all or a portion of the spectrum in the library, and finding the closest match.

  3. Edinburgh Research Explorer Be Grateful for Drizzle

    E-Print Network [OSTI]

    Millar, Andrew J.

    microwave transmission, using `dishes' (antennae) on a series of towers gets you the necessary speed;2 the towers to re-align them, those involved tell me that a good microwave link will work well over 99 percent

  4. Acknowledgments: we are grateful to Dr Descazeaud,

    E-Print Network [OSTI]

    Boyer, Edmond

    de Pdiatrie, Hpital Andr Mignot, Le Chesnay; 5 Service de Pdiatrie, Centre Hospitalier is a cornerstone of the management of sickle cell disease but carries a high risk of hemolytic transfusion reaction of this syndrome, to discuss its pathophysiology, and to propose a management strategy. Design and Methods We

  5. ENGR 3502 Open Source Humanoid Robots Instructor permission only you need to request permission in SIS and provide the information

    E-Print Network [OSTI]

    Acton, Scott

    , design and 3D- print a "body", figure out the Linux open-source C++ framework and make the robot do

  6. very high brightnesses and efficiencies. The successful synthe-sis of these complexes provides a new direction for electro-

    E-Print Network [OSTI]

    Mofrad, Mohammad R. K.

    , the design of new alkenylpyridine ligands, and the application of these ligands in the synthesis of cyclo nitrogen for 12 h. After cooling to room temperature, 2-ethoxyetha- nol was distilled out. The residue and the residue was purified on a silica gel column using a mixture of CH2Cl2 and hexane as eluent giving

  7. ReconocimientoAutomticodePatrones Candlesticks

    E-Print Network [OSTI]

    Arratia, Argimiro A.

    realizado varias simulaciones sobre los 35 valores principales del IBEX, y corroborado resultados con analis

  8. advanced bragg gratings: Topics by E-print Network

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

    at UNL 3. Under-recruitment of women to STEM Farritor, Shane 379 Ultra-large bandwidth hollow-core guiding in all-silica Bragg fibers with nano-supports CERN Preprints Summary:...

  9. Nonvolatile grating in an azobenzene polymer with optimized molecular reorientation

    E-Print Network [OSTI]

    Rao, D.V.G.L.N.

    such as liquid crystals. However, the azobenzene derivatives can be oriented in solid matrices by polarized light and revert back to trans form thermally or by light. The length of azobenzene part of the derivatives. To get a good ho- mogeneous mixture, we stirred the mixed solution for 2 h after pouring the azobenzene

  10. Fabrications of PVDF gratings :final report for LDRD project 79884.

    SciTech Connect (OSTI)

    Rogers, J. A. (University of Illinois, Urbana-Champaign); Carr, Dustin Wade; Bogart, Gregory R.

    2005-12-01T23:59:59.000Z

    The purpose of this project was to do some preliminary studies and process development on electroactive polymers to be used for tunable optical elements and MEMS actuators. Working in collaboration between Sandia National Labs and The University of Illinois Urbana-Champaign, we have successfully developed a process for applying thin films of poly (vinylidene fluoride) (PVDF) onto glass substrates and patterning these using a novel stamping technique. We observed actuation in these structures in static and dynamic measurements. Further work is needed to characterize the impact that this approach could have on the field of tunable optical devices for sensing and communication.

  11. Near-field imaging of perfectly conducting grating surfaces

    E-Print Network [OSTI]

    2013-11-06T23:59:59.000Z

    We consider the diffraction when a time-harmonic electro- magnetic plane wave is ... ness and stability for the inverse problem have been studied by many...

  12. Numerical solution of an inverse diffraction grating problem from ...

    E-Print Network [OSTI]

    2013-02-02T23:59:59.000Z

    Feb 5, 2013 ... The diffraction of time- harmonic electromagnetic waves by some periodic material ... patterns [710]. Uniqueness results and stability estimates.

  13. Linear-Grating Triboelectric Generator Based on Sliding Electrification

    E-Print Network [OSTI]

    Wang, Zhong L.

    developed a new principle of triboelectric generator (TEG) based on a fully contacted, sliding electrification process, which lays a fundamentally new mechanism for designing universal, high-performance TEGs current, and current frequency. The TEG was demonstrated to be an efficient power source

  14. A theoretical study of grating structured triboelectric nanogenerators

    E-Print Network [OSTI]

    Wang, Zhong L.

    for ultra-high output power but also the most complicated. In this manuscript, the first theoretical model. Then for each of these two categories, a study of the basic output profiles and an in-depth discussion and low matched load resistance. In this paper, from the discussion of the inuence of both structural

  15. Sandia National Laboratories: Fiber-optic Bragg grating sensor

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

    capacity factor. While present systems include instrumentation to measure power output, few adequately monitor mechanical loads and structural response, which are equally...

  16. ALS Scientists Patent Technique To Dramatically Advance Grating-Based

    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 for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032)8Li (59AJ76) (See theDoctoral Fellowship inALS

  17. Town Known for First Thanksgiving Grateful for Energy Savings | Department

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23,EnergyChicopeeTechnologyfact sheet summarizesof Energy TheFor theof

  18. Patent: Ultrafast transient grating radiation to optical image converter |

    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:Energy: Grid Integration Redefining What's Possible for RenewableSpeedingBiomassPPPO WebsitePalms Village ResortEnergyLTunable

  19. ALS Scientists Patent Technique To Dramatically Advance Grating-Based

    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 742EnergyOnItemResearch >InternshipDepartmentNeutrino-Induced1ALSALS Reveals New State

  20. Determining the effective viscosity of a Shear Induced State Structure (SIS) surfactant, C16TMASal, during injection into a porous medium

    E-Print Network [OSTI]

    Platt, Frank Martin

    1994-01-01T23:59:59.000Z

    The purpose of this experimental study was to determine both the effective viscosity and the suitability of C16TASal for use in enhanced oil recovery. The work eventually involved the injection of a single phase fluid with various concentrations...

  1. 2013 Hooding Ceremony The 2013 SIS Hooding Ceremony was held May 10, 2013 at the University Center Ballroom on the UT campus.

    E-Print Network [OSTI]

    Wang, Xiaorui "Ray"

    Elizabeth Frakes H. W. Wilson Scholarship Sierra Johnson Crystal Kile Matthew Ownsby David Baber Ethan

  2. The Troubling Aspects of a Building Block Hypothesis for Genetic

    E-Print Network [OSTI]

    Fernandez, Thomas

    as an explanation of the search power of GAs [46, 32]. Holland's analy ses have been the foundation for more

  3. The Potential for Renewable Energy Sources in Ausilio Bauen

    E-Print Network [OSTI]

    .................................................................................................................. 20 Fischer-Tropsch Kerosene Global Biomass Fischer-Tropsch Fuel Chains...................................................... 39 Fisher Tropsch Quantitative Analys

  4. Fragmentation Considered Poisonous

    E-Print Network [OSTI]

    Herzberg, Amir

    2012-01-01T23:59:59.000Z

    We present practical poisoning and name-server block- ing attacks on standard DNS resolvers, by off-path, spoofing adversaries. Our attacks exploit large DNS responses that cause IP fragmentation; such long re- sponses are increasingly common, mainly due to the use of DNSSEC. In common scenarios, where DNSSEC is partially or incorrectly deployed, our poisoning attacks allow 'com- plete' domain hijacking. When DNSSEC is fully de- ployed, attacker can force use of fake name server; we show exploits of this allowing off-path traffic analy- sis and covert channel. When using NSEC3 opt-out, attacker can also create fake subdomains, circumvent- ing same origin restrictions. Our attacks circumvent resolver-side defenses, e.g., port randomisation, IP ran- domisation and query randomisation. The (new) name server (NS) blocking attacks force re- solver to use specific name server. This attack allows Degradation of Service, traffic-analysis and covert chan- nel, and also facilitates DNS poisoning. We validated the attac...

  5. Commercial Fertilizers in 1919-20.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach); Asbury, S. E. (Samuel E.)

    1920-01-01T23:59:59.000Z

    , if taken in accordance with the reauirements of the law, will he analyzed free of charge. Those who desire a free analy- sis of: a fertilizer should write for a blank "Application for Free Fer- tilizer Analysis" to the Stete Chemist, College Station....49 3.54 2.47 2.36 2.10 2.47 1.93 2.23 1 96 1 : 65 1.66 1.37 1.31 1.38 1.65 P.70 1.65 1.64 1.42 1.53 1.48 1.70 1.61 2.15 1.65 1.72 1.52 1.61 1.52 1.52 1.64 1.76 1.45 1.16 1.46 3.29 2.94 3.24 3.22 5.27 4.94 4.84 4...

  6. Course Cross-List Relationship Form Guidelines

    E-Print Network [OSTI]

    Dennett, Daniel

    spaces) Non-Sponsor Approval: __________________________ Date: ___________ **************** SIS and DARS

  7. Design and Fabrication of Integrated Optical Waveguides and Sidewall Bragg Gratings

    E-Print Network [OSTI]

    Wang, Xin

    2014-11-20T23:59:59.000Z

    bandwidth from 10 GHz to 100 THz. The progressive research and development in low-loss optical fibers, compact single-mode semiconductor lasers, erbium-doped fiber amplifiers, and dense wavelength division multiplexing (DWDM) has led to optical...

  8. Synthesis, design and characterization of a distributed feedback grating based non-linear optical chemosensor

    E-Print Network [OSTI]

    Wun, Aetna W. (Aetna Wai-Yue)

    2005-01-01T23:59:59.000Z

    Current optical chemosensors that operate by a 3R sensing approach - recognize, relay and report -- generate a measurable luminescent signal in the presence of targeted analyte. However, the advancement of chemical sensing ...

  9. Design and Fabrication of Integrated Optical Waveguides and Sidewall Bragg Gratings

    E-Print Network [OSTI]

    Wang, Xin

    2014-11-20T23:59:59.000Z

    In this dissertation, a novel design platform with arsenic tri-sulfide (As2S3) on titanium-diffused lithium niobate substrate (Ti:LiNbO3) is introduced to provide physical foundation for integrated optical device applications. LiNbO3 possesses...

  10. Force Sensing Robot Fingers using Embedded Fiber Bragg Grating Sensors and Shape Deposition Manufacturing

    E-Print Network [OSTI]

    Park, Yong-Lae

    Manufacturing Yong-Lae Park1 , Kelvin Chau2 , Richard J. Black2 and Mark R. Cutkosky1 1 Center for Design deposition manufacturing (SDM) process was explored. The sensorized SDM-fabricated finger mechanoreceptors on its legs [2], in addition to hair sensors, chemical sensors, etc. [1], [26]. Mechanoreceptors

  11. A Hybrid Silicon Sampled Grating DBR Tunable Laser Matthew N. Sysak1

    E-Print Network [OSTI]

    Bowers, John

    epitaxial height of 0.4 m, a rib etch depth of 0.3 m, and a silicon waveguide width of 2 m. A 4 m wide proton (H+) implant channel is used for current confinement. The rear mirror has fourteen 7.6 m wide

  12. Municipal Solid Waste as an Energy Source by Roller-Grate Incineration

    E-Print Network [OSTI]

    Karnoski, P. J.

    1979-01-01T23:59:59.000Z

    and the potential benefits to municipalities and industry are discussed. Firm agreements covering waste and energy revenues are essential, as is the ability of the plant to constantly receive refuse and produce power for its customers. Methods of aChieJ:ing... wishes to express his appreciation to Mr. Herbert P. Otte and Mr. James A. Fife of Grumman Ecosystems Corporation and Mr. Klaus Feindler of Grumman Allied Corporation for their assistance in providing the background information and references...

  13. Multilayer Phase-Only Diffraction Gratings: Fabrication and Application to EUV Optics

    E-Print Network [OSTI]

    Salmassi, Farhad; Gullikson, Eric M.; Anderson, Erik H.; Naulleau, Patrick P.

    2007-01-01T23:59:59.000Z

    Application to Diffractive Optics, J. Vac. Sci. & Technol.of advanced diffracitve optics,J. Vac. Sci. & Technol. B,diffusers. Applied Optics, 43, 28, 1 (2004). Patrick P.

  14. Fabrication of sawtooth diffraction gratings using nanoimprint lithography Chih-Hao Chang,a)

    E-Print Network [OSTI]

    West Braker Lane, Austin, Texas 78758 Received 25 June 2003; accepted 29 September 2003; published 5, 77 Mass Avenue, Room 37-420, Cambridge, Massachusetts 02139 T. C. Bailey and J. G. Ekerdt Texas Materials Institute, University of Texas at Austin, Austin, Texas 78759 R. D. Frankel Chromaplex, Inc., 15

  15. Fiber optic temperature sensor using a grating on an angled fiber tip

    E-Print Network [OSTI]

    Varadarajan, Harini

    2000-01-01T23:59:59.000Z

    CHAPTER Page 2. Spinning the Photo Resist. 20 3. Laser Exposure 21 4. Photo Resist Developing. . . . 25 5. Etching the Fiber. 26 B. Testing 29 1. Test Setup. 2. Test Results 29 30 V CONCLUSIONS. . 40 VI RECOMMENDED FUTURE RESEARCH . . 41.... Reusable Polishing Puck. . 14 . 17 11. Fibers in the Polishing Puck. 12. Polish Pad Surfaces. 13. Profile of Polished Fibers. 14. Photograph of Polished Fibers on Metal Puck 18 19 . 19 . 20 15. Argon Laser Setup. 22 16. Laser Setup Details. 23...

  16. Grating transition radiation: A source of quasimonochromatic radiation P. Henri, O. Haeberle,* and P. Rullhusen

    E-Print Network [OSTI]

    Boyer, Edmond

    and transparent structures are needed such as, e.g., SiO2 aerogels 9 . An alternative technique is based

  17. Development of Fiber Bragg Grating Strain, Thermal, and Magnetic Sensors for Smart Structure Applications

    E-Print Network [OSTI]

    Emmons, Michael

    2012-01-01T23:59:59.000Z

    pp. 1577-1578, 1993. A. Yariv, Optical electronics in modernPrentice Hall, 1995. A. Yariv, Quantum electronics: Wiley,found in textbooks such as Yariv 1989, Verdeyen 1995, and

  18. Ferroelectric domain gratings and Barkhausen spikes in potassium lithium tantalate niobate

    SciTech Connect (OSTI)

    Tong, X.; Yariv, A.; Zhang, M. [California Institute of Technology, Caltech 128-95, Pasadena, California 91125 (United States)] [California Institute of Technology, Caltech 128-95, Pasadena, California 91125 (United States); Agranat, A.J. [Hebrew University of Jerusalem, 91904 Jerusalem (Israel)] [Hebrew University of Jerusalem, 91904 Jerusalem (Israel); Hofmeister, R.; Leyva, V. [Ortel Corporation, Alhambra, California 91803 (United States)] [Ortel Corporation, Alhambra, California 91803 (United States)

    1997-04-01T23:59:59.000Z

    The observation of Barkhausen current spikes during the recording of volume phase holograms in potassium lithium tantalate niobate is reported on. These spikes are due to the ferroelectric domain reversal induced by photorefractive space charge fields. Both {open_quotes}small{close_quotes} (1 nA) and {open_quotes}large{close_quotes} (100 nA) spikes are observed, which correspond to micro and macro domain reversal, respectively. The diffraction efficiency can change as much as 50{percent} during a single macrodomain switching. {copyright} {ital 1997 American Institute of Physics.}

  19. Fiber optic temperature sensor using a grating on an angled fiber tip

    E-Print Network [OSTI]

    Varadarajan, Harini

    2000-01-01T23:59:59.000Z

    up to observe the response of the sensor to changes in temperature in a furnace was built and the test results are in general agreement with prediction. The reflected power is observed to vary approximately as a sinusoidal function as expected...

  20. Comprehensive data reduction package for the Immersion GRating INfrared Spectrograph: IGRINS

    E-Print Network [OSTI]

    Pak, Soojong

    2014 Available online 10 March 2014 Abstract We present a Python-based data reduction pipeline package correction of the target spectra, the intrinsic hydrogen absorption features of the standard A star pipeline is to provide stable quality of data reduction process with minimal human intervention. The full

  1. Widely tunable distributed-feedback lasers with chirped gratings Liang Xue,1,a

    E-Print Network [OSTI]

    New Mexico, University of

    and R. Kaspi2,c 1 Department of Electrical and Computer Engineering and Center for High Technology, Directed Energy Directorate, Kirtland Air Force Base, Albuquerque, New Mexico 87117, USA Received 16 database simulations. 2009 American Institute of Physics. DOI: 10.1063/1.3123813 The mid-IR 35 m

  2. Shaping of Thin Grazing-Incidence Reflection Grating Substrates via Magnetorheological Finishing

    E-Print Network [OSTI]

    -spatial frequency distortions, such as a single bow traversing the length of the optic, the 2 arcsec limit would. Their low-frequency figure can be improved through thermal slumping to better than 10 arcsec.6, 7 Silicon substrate is desired that remains flat in the absence of external forces. Low bow and low warp wafers still

  3. 28 Endowment for Excellence 2010 Report to Donors 29 We are grateful to each

    E-Print Network [OSTI]

    Botea, Adi

    Australian Decorative and Fine Arts Society Autism Asperger ACT Dr Gary Bacon Mr Tom Baddeley Mr Brendan Bishop Mr James Black Mrs Dorothy Black Mr Geoff Blake Dr Cecilia Blomstedt Ms Shirley-kay Blue Dr Norman Boardman AO Ms Sue Boettcher Mr Nick Bogiatlis Bootes Foundation Mr Gary Borradale Ms Julie Bos Mr David

  4. Single cell contractility studies based on compact moir system over periodic gratings

    E-Print Network [OSTI]

    , Massachusetts 02215, USA 2 Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts in the regulation of vascular contractile functions.2 A variety of cell force measurement approaches have been

  5. Fingertip Force Control with Embedded Fiber Bragg Grating Sensors Yong-Lae Park1

    E-Print Network [OSTI]

    Park, Yong-Lae

    industrial robots with large motors under pulse-width modulated con- trol, in space applications and even

  6. Development of Fiber Bragg Grating Strain, Thermal, and Magnetic Sensors for Smart Structure Applications

    E-Print Network [OSTI]

    Emmons, Michael

    2012-01-01T23:59:59.000Z

    Y. Kurosawa et al. , Polyimide-coated small-diameterwavelength shift in a polyimide coated FBG and the NiTiwavelength shift in a polyimide coated FBG and the NiTi

  7. Rigorous model of the scattering of a focused spot by a grating and its

    E-Print Network [OSTI]

    of a thick layer of polycarbonate coated with aluminum. The light is incident from the polycarbonate, and the lens is designed to correct aberrations caused by focusing through the polycarbonate. The track standard the depth of the pit is chosen equal to a quarter wavelength, measured in polycarbonate. One

  8. *Support from EPRI, NSF and ORNL for this work is gratefully acknowledged.

    E-Print Network [OSTI]

    Amin, S. Massoud

    of the power produced, rights of way and assts, but it also creates challenges: 1) Regulatory Challenges be taken into account. #12;0.6 0.7 0.8 0.9 1 1.1 1989 1994 1999 2004 2009 TransmissionCapacity(1989=1) NPCC TRANSMISSIONINVESTMENT(billion1999-$/ -$117 million/year Transmission investment ($) since 1975 Transmission capacity

  9. Strain-tuning of periodic optical devices : tunable gratings and photonic crystals

    E-Print Network [OSTI]

    Wong, Chee Wei, 1975-

    2003-01-01T23:59:59.000Z

    The advancement of micro- and nano-scale optical devices has heralded micromirrors, semiconductor micro- and nano-lasers, and photonic crystals, among many. Broadly defined with the field of microphotonics and microelect ...

  10. Experimental observation of a traveling plasma grating formed by two crossing filaments in gases

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    of atmospheric pollution [3], pulse compression down to few cycle regime [4], triggering and guiding of electric). This laser delivers 15 mJ, 40 fs laser pulses with central wavelength at 800 nm at a repetition rate of 100 crystal is combined with pu

  11. Dual gratings for enhanced light trapping in thin-film solar cells

    E-Print Network [OSTI]

    , Ireland * christian.schuster@york.ac.uk Abstract: Thin film solar cells benefit significantly from; (350.6050) Solar energy. References and links 1. M. A. Green, J. Zhao, A. Wang, and S. R. Wenham, "Progress and outlook for high-efficiency crystalline silicon solar cells," Sol. Energy Mater. Sol. Cells 65

  12. U.S. DEPARTMENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPADETERMINA...

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

    information gathenng (including, but not limited 10, literature surveys, Inventories, Site visits, and audits), data analysIs (including. but not limited to. computer...

  13. U.S. DEPARTMENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA...

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

    A9 Information gathering (including, but not limited to, literature surveys, inventories. audits). data analysIs (induding computer modeling), document preparation (such as...

  14. Application of neutron computed tomography in the geosciences

    E-Print Network [OSTI]

    Wilding, M.; Shields, K.; Lesher, C. E.

    2005-01-01T23:59:59.000Z

    of neutron computed tomography in the geosciences Martinthat applies neutron computed tomography (CT) to geologicalthe use of neutron computed tomography (CT) in the analy-

  15. Measurements of volatile organic compounds at a suburban ground site (T1) in Mexico City during the MILAGRO 2006 campaign: measurement comparison, emission ratios, and source attribution

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    versus CO for OVOCs and acetonitrile calculated by linearThis analy- OVOCs and acetonitrile. Because OVOCs have knownwas used to measure acetonitrile, aromatics and oxy- genated

  16. User:Sanikaorient | Open Energy Information

    Open Energy Info (EERE)

    and seller of the equipment of Fiberglass Grating, frp grating india,PVC Cable Trays, Motor Guards, FRP Gratings, Motor Fan Cover, FRP Canopies, Electric Motor Cover, Electric...

  17. Calibration of the modulation transfer function of surface profilometers with binary pseudo-random test standards: Expanding the application range

    E-Print Network [OSTI]

    Yashchuk, Valeriy V

    2010-01-01T23:59:59.000Z

    Grating Standard for Calibration of Surface Profilometers,"Gratings and Arrays for Calibration of Surface ProfileGratings and Arrays for Calibration of Modulation Transfer

  18. Calibration of the modulation transfer function of surface profilometers with binary pseudo-random test standards: expanding the application range

    E-Print Network [OSTI]

    Yashchuk, Valeriy V.

    2011-01-01T23:59:59.000Z

    Grating Standard for Calibration of Surface Profilometers,"Gratings and Arrays for Calibration of Surface ProfileGratings and Arrays for Calibration of Modulation Transfer

  19. PHOTOIONIZATION MODELING OF OXYGEN K ABSORPTION IN THE INTERSTELLAR MEDIUM: THE CHANDRA GRATING SPECTRA OF XTE J1817-330

    SciTech Connect (OSTI)

    Gatuzz, E.; Mendoza, C. [Centro de Fisica, Instituto Venezolano de Investigaciones Cientificas (IVIC), P.O. Box 20632, Caracas 1020A (Venezuela, Bolivarian Republic of); Garcia, J.; Lohfink, A. [Department of Astronomy and Maryland Astronomy Center for Theory and Computation, University of Maryland, College Park, MD 20742 (United States); Kallman, T. R.; Witthoeft, M. [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Bautista, M. A. [Department of Physics, Western Michigan University, Kalamazoo, MI 49008 (United States); Palmeri, P.; Quinet, P., E-mail: egatuzz@ivic.gob.ve, E-mail: claudio@ivic.gob.ve, E-mail: javier@astro.umd.edu, E-mail: alohfink@astro.umd.edu, E-mail: timothy.r.kallman@nasa.gov, E-mail: michael.c.witthoeft@nasa.gov, E-mail: manuel.bautista@wmich.edu, E-mail: palmeri@umons.ac.be, E-mail: quinet@umons.ac.be [Astrophysique et Spectroscopie, Universite de Mons-UMONS, B-7000 Mons (Belgium)

    2013-05-01T23:59:59.000Z

    We present detailed analyses of oxygen K absorption in the interstellar medium (ISM) using four high-resolution Chandra spectra toward the X-ray low-mass binary XTE J1817-330. The 11-25 A broadband is described with a simple absorption model that takes into account the pile-up effect and results in an estimate of the hydrogen column density. The oxygen K-edge region (21-25 A) is fitted with the physical warmabs model, which is based on a photoionization model grid generated with the XSTAR code with the most up-to-date atomic database. This approach allows a benchmark of the atomic data which involves wavelength shifts of both the K lines and photoionization cross sections in order to fit the observed spectra accurately. As a result we obtain a column density of N{sub H} = 1.38 {+-} 0.01 Multiplication-Sign 10{sup 21} cm{sup -2}; an ionization parameter of log {xi} = -2.70 {+-} 0.023; an oxygen abundance of A{sub O}= 0.689{sup +0.015}{sub -0.010}; and ionization fractions of O I/O = 0.911, O II/O = 0.077, and O III/O = 0.012 that are in good agreement with results from previous studies. Since the oxygen abundance in warmabs is given relative to the solar standard of Grevesse and Sauval, a rescaling with the revision by Asplund et al. yields A{sub O}=0.952{sup +0.020}{sub -0.013}, a value close to solar that reinforces the new standard. We identify several atomic absorption lines-K{alpha}, K{beta}, and K{gamma} in O I and O II and K{alpha} in O III, O VI, and O VII-the last two probably residing in the neighborhood of the source rather than in the ISM. This is the first firm detection of oxygen K resonances with principal quantum numbers n > 2 associated with ISM cold absorption.

  20. Large area direct nanoimprinting of SiO2 TiO2 gel gratings for optical applications

    E-Print Network [OSTI]

    have been known as an economical and quick way to obtain artificial ceramics with engineered properties optical lithography. After exposure, development, electron- beam evaporation of chromium Cr , and lift off

  1. T. Shimura et al. page1/13 Simultaneous determination of the index and absorption gratings in

    E-Print Network [OSTI]

    Boyer, Edmond

    of absorption change due to the applied field over a wide wavelength range is required and the index change for photorefractive two-wave mixing set-up with small sinusoidal phase modulation for fixed wavelength is needed compared to the response time of the photorefractive material is compensated, and wave-front matching

  2. Binding Geometry of Hydrogen-Bonded Chain Motif in Self-Assembled Gratings and Layers on Ag(111)

    E-Print Network [OSTI]

    of Rome "Tor Vergata", 00133 Roma, Italy CNR-IOM, Laboratorio TASC, Trieste, 34149 TS, Italy # Sincrotrone Trieste S.C.p.A., 34149 Trieste, Italy Department of Physics, University of Trieste, I-34127 Trieste, Italy Physik Department, Technische Universitat Munchen, James-Franck Strae, 185748 Garching

  3. Enhancement of optical absorption in thin-film organic solar cells through the excitation of plasmonic modes in metallic gratings

    E-Print Network [OSTI]

    Veronis, Georgios

    .1063/1.3377791 Thin-film organic solar cells OSCs are a promising candidate for low-cost energy conversion.16 HoweverEnhancement of optical absorption in thin-film organic solar cells through the excitation up to 50% for such solar cell structures. 2010 American Institute of Physics. doi:10

  4. Determination of Thermal Diffusivities, Thermal Conductivities, and Sound Speeds of Room-Temperature Ionic Liquids by the Transient Grating Technique

    E-Print Network [OSTI]

    Reid, Scott A.

    Determination of Thermal Diffusivities, Thermal Conductivities, and Sound Speeds of Room. The experiments give thermal diffusivities from which thermal conductivities can be determined, sound speeds not only on the sound speed but also on the thermal diffusivity and acoustic damping of the RTILs

  5. Viscosity Dependence of the Rotational Reorientation of Rhodamine B in Mono-and Polyalcohols. Picosecond Transient Grating Experiments

    E-Print Network [OSTI]

    Fayer, Michael D.

    Viscosity Dependence of the Rotational Reorientation of Rhodamine B in Mono- and Polyalcohols-Stokes-Einstein (DSE) theorywas shown to extend to much higher viscosities than previously reported. Detailed of radius R and hydrodynamic volume V rotating in a fluid continuum of macroscopic viscosity q and relates

  6. Smirnov-SSDLTR2005 Chirped bulk Bragg gratings in PTR glass for ultrashort pulse stretching and compression

    E-Print Network [OSTI]

    Glebov, Leon

    laser applications boosted the development of optical components capable of withholding high power along with beam transformation. Especially, it related to high power femtosecond pulses where high peak power Arbor, MI 48109-2122 Tel.: (734)615-7166, Fax: (734)763-4876, e-mail: almantas@eecs.umich.edu High power

  7. J. Opt. 15 (2013) 085101 (3pp) T Roy et al A meta-diffraction-grating for visible light

    E-Print Network [OSTI]

    Zheludev, Nikolay

    2013-01-01T23:59:59.000Z

    in the far infrared [5] and near-infrared [7] region of the spectrum while flat lenses designed from optical attracted substantial attention [3-9]. In particular anomalous refraction and reflection has been observed [3-8] are concerned with the infrared part of the spectrum, whereas here we experimentally

  8. Office of Institutional Research & Evaluation Annual Report 2013-2014 Page 1 of 5

    E-Print Network [OSTI]

    Dennett, Daniel

    becoming familiar with the new student information system (iSIS), educating consultants and others on the iSIS Warehouse was accurately loading and reporting its nightly feed from iSIS. In order to facilitate ongoing communication between OIR&E, the Data Warehouse Team and the iSIS Tech Team, a new business analyst position

  9. Commercial Fertilizers in 1917-18.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1918-01-01T23:59:59.000Z

    Roost Guano-Guarantee ....................... Analysis ........................................ Dallas Fertilizer and Reduction Co., Dallas . Texas.- Beaver Brand Cotton and Corn Grower Non-Potassic- ...................................... Guarantee... Analys~s ........................................ .......... Beaver Brand Stearn Bone Meal-Guarantee Analysis ........................................ Beaver Brand Vegetable Grower-Guarantee .......... Analysis...

  10. COAL LIQUEFACTION STUDIES USING PHOSPHORIC ACID AT MODERATE TEMPERATURES AND PRESSURES

    E-Print Network [OSTI]

    McLean, J.B.

    2010-01-01T23:59:59.000Z

    Analys of Wyodak Roland Seam Coal Froximate Analysis C,T. &THF-extractabilities of a seam coal increased from 12% MAFused Wyodak Roland seam sub-bituminous coal. Consistent with

  11. Commercial Fertilizers in 1918-19.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1919-01-01T23:59:59.000Z

    Analys~s i;;r'dfa;t 'e&;iiii;;; -\\jv'it&~t-+;ta;&--' 27591 27700 27701 27702 27735 27830 27892 27532 27705 27529 27594 27651 27652 27653 27654 27699 27704 27736 27581 27709 *Total phosphoric Acid . Guarantee...

  12. Contamination des milieux aquatiques par les composs chimiques : lien entre prsence et

    E-Print Network [OSTI]

    Canet, Léonie

    Phtalates Bisphénol A BTEX, Solvents chlorés, MTEBE/ETBE, .... Composés analysés ciblés #12;#moléc pos neg

  13. The effect of footwear and surface conditions on spinal contour and flexibility with constrained standing

    E-Print Network [OSTI]

    Stephenson, Donya Ann

    1995-01-01T23:59:59.000Z

    different foot conditions for periods of four hours on four consecutive days. The floor surfaces used included two types of anti-fatigue mats (Hygenic 1, Ergomat), three types of industrial grating (Metal Grating, Clean Room Grating, Standard Clean Room...

  14. Stability of modulation transfer function calibration of surface profilometers using binary pseudo-random gratings and arrays with nonideal groove shapes

    SciTech Connect (OSTI)

    Barber, Samuel K.; Anderson, Erik H.; Cambie, Rossana; Marchesini, Stefano; McKinney, Wayne R.; Takacs, Peter Z.; Voronov, Dmitry L.; Yashchuk, Valeriy V.

    2010-03-31T23:59:59.000Z

    The major problem of measurement of a power spectral density (PSD) distribution of surface heights with surface profilometers arises due to the unknown Modulation Transfer Function (MTF) of the instruments, which tends to distort the PSD at higher spatial frequencies. The special mathematical properties of binary pseudo-random patterns make them an ideal basis for developing MTF calibration test surfaces. Two-dimensional binary pseudo-random arrays (BPRAs) have been fabricated and used for the MTF calibration of the MicroMap{trademark}-570 interferometric microscope with all available objectives. An investigation into the effects of fabrication imperfections on the quality of the MTF calibration and a procedure for accounting for such imperfections are presented.

  15. Message from Sophie Prize Winner I am grateful to Jostein Gaarder and the Sophie Foundation for the opportunity to discuss the

    E-Print Network [OSTI]

    Hansen, James E.

    . Stabilizing climate requires restoring our planet's energy balance. The physics is straightforward. The effect to prove: the United States, Canadian and Norwegian governments are going right ahead developing the tar for the opportunity to discuss the state of Earth's climate, the implications for people and nature, and action

  16. Frederick Seitz Materials Research Laboratory | 104 South Goodwin Avenue, MC-230 Urbana, IL 61801 | 217.333.1370 | www.mrl.illinois.edu The FSMRL gratefully acknowledges financial

    E-Print Network [OSTI]

    Braun, Paul

    , thin film me- trology, and fiber optics. He succeeds Jennifer A. Lewis, the Hans Thurnauer Professor of Energy's Office of Basic Energy Sci- ences, Materials Sciences and Engineering Division (DOE BES to devise technology solutions across such broad fields as solar power, biointegrated electronics, sensing

  17. "I'm very grateful this program is here, because I would have given up on writing many times along the road."

    E-Print Network [OSTI]

    Walker, Matthew P.

    Certificate Program in Construction Management (p. 112) Certificate Program in HVAC (p. 118) EDUCATION Care Act to the latest trends in philanthropy. There's sure to be a topic that intrigues you. Visit pp

  18. High-resolution grazing-incidence grating spectrometer for temperature measurements of low-Z ions emitting in the 100300 spectral band

    SciTech Connect (OSTI)

    Widmann, K., E-mail: widmann1@llnl.gov; Beiersdorfer, P.; Magee, E. W. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Boyle, D. P.; Kaita, R.; Majeski, R. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)

    2014-11-15T23:59:59.000Z

    We have constructed a high-resolution grazing-incidence spectrometer designed for measuring the ion temperature of low-Z elements, such as Li{sup +} or Li{sup 2+}, which radiate near 199 and 135 , respectively. Based on measurements at the Livermore Electron Beam Ion Trap we have shown that the instrumental resolution is better than 48 m at the 200 setting and better than 40 m for the 135- range. Such a high spectral resolution corresponds to an instrumental limit for line-width based temperature measurements of about 45 eV for the 199 Li{sup +} and 65 eV for the 135 Li{sup 2+} lines. Recently obtained survey spectra from the Lithium Tokamak Experiment at the Princeton Plasma Physics Laboratory show the presence of these lithium emission lines and the expected core ion temperature of approximately 70 eV is sufficiently high to demonstrate the feasibility of utilizing our high-resolution spectrometer as an ion-temperature diagnostic.

  19. Optical gratings induced by field-free alignment of molecules A.Rouzee, V.Renard, S.Guerin, O.Faucher, and B.Lavorel

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    [1]. With ultra-short laser pulses, typically of less than 100 fs pulse duration, molecules of crossed ultra-short pump pulses of different polarizations by a technique based on the induced time with non-resonant high power laser pulses has become a powerful technique for preparing aligned molecules

  20. NM's Flying 40 List Includes CHTM Start-Up By Stefi Weisburd June 23, 2014

    E-Print Network [OSTI]

    New Mexico, University of

    -ups including Sandia Systems, Inc., Semiconductor Bridge Technology, Gratings, Inc., Zia Laser, Inc., K

  1. Absolute Measurement of Oxygen Edge Structure in the Quantum Efficiency of Xray G. Prigozhin 1 , M. Bautz 1 , S. Kissel 1 , G. Ricker 1 , S. Kraft 2 , F. Scholze 2 , G. Ulm 2

    E-Print Network [OSTI]

    the synchrotron radiation and grating monochromator facilities of the PTB radiometry laboratory at BESSY. We

  2. This paper presents a state assignment technique to reduce dynamic power consumption in finite state machines (FSM).

    E-Print Network [OSTI]

    Pedram, Massoud

    resulted in a significant interest in energy efficient design. Meanwhile, inte- grated-circuit densities

  3. Microbunching Studies using IR Spectroscopy and Stephan Wesch, C. Behrens, R. Ischebeck, M. Rhrs,

    E-Print Network [OSTI]

    dispersive reflective gratings radiation detection by 60 pyroelectric senors (only coherent signals

  4. Characterization of Nanoscale Objects and Domains with Massive Cluster SIMS

    E-Print Network [OSTI]

    Liang, Chao-Kai

    2014-07-31T23:59:59.000Z

    efficient production of multiple secondary ions (SIs) desorbed from a nanometric volume per impact. The SIs from each projectile impact are collected and recorded as an individual event. Investigation of individual nano-objects with SIMS can thus be achieved...

  5. Robotic Construction by Contour Crafting Behrokh Khoshnevis, Professor, University of Southern California

    E-Print Network [OSTI]

    Liu, X. Shirley

    the development of three novel Additive Manufacturing (3D Printing) processes called Contour Crafting, SIS and MPM

  6. E-Print Network 3.0 - aphidius gifuensis ashmead Sample Search...

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

    11371 Summary: complete mitochondrial genomes from Aphidius gifuen- sis (Ashmead), Diachasmimorpha longicaudata (Ash- mead... Meteorus pulchricornis 10186 Incomplete...

  7. Distributed Energy Systems in California's Future: A Preliminary Report Volume 2

    E-Print Network [OSTI]

    Balderston, F.

    2010-01-01T23:59:59.000Z

    sis and the collection and storage of hydrogen gas has beenair storage, flywheels, synthetic fuels ( hydrogen), and the

  8. Student:______________________________ Advisor:_____________________________ ID #:________________________________

    E-Print Network [OSTI]

    Dennett, Daniel

    Sciences: Use iSIS ­ Must be courses with attribute value: SoE-Nat Sci (b) Mathematics: Use iSIS ­ Must and 162, ES 56, EE 104, EE 108, BME 141, BIO 132, PHY 153 (e) Use iSIS ­ Must be EE courses with attribute value: SoE-Engineering (f) EM 51, (a), (b), or use iSIS ­ Must be courses with attribute value: So

  9. Student:______________________________ Advisor:_____________________________ ID #:________________________________

    E-Print Network [OSTI]

    Dennett, Daniel

    Science: Use iSIS ­ Must be courses with attribute value: SoE-Nat Sci (b) Mathematics: Use iSIS ­ Must) MATH 161 and 162, ES 56, EE 104, EE 108, BME 141, BIO 132, PHY 153 (e) Use iSIS ­ Must be EE courses with attribute value: SoE-Engineering (f) EM 51, (a), (b), or use iSIS- Must be courses with attribute value: So

  10. Student:_________________________________ Advisor:_____________________________ ID #:___________________________________

    E-Print Network [OSTI]

    Dennett, Daniel

    ­ Notes (a) Natural Science: Use iSIS ­ Must be courses with attribute value: SoE ­ Nat Sci (b) Mathematics: Use iSIS ­ Must be courses with attribute value: SoE - Mathematics (c) Foundation Elective: Use iSIS-req of BIO 13, CHEM 1, EOS 1, or PHY 11 Or, EM course (d) Use iSIS ­ Must be ME course, except ME 94, 96, 193

  11. Student:______________________________ Advisor:_____________________________ ID #:________________________________

    E-Print Network [OSTI]

    Dennett, Daniel

    :__________________ * No Pass/Fail Program Electives (6 Credits) (e) #12;BSE - Notes (a) Natural Science: Use iSIS ­ Must be courses with attribute value: SoE-Nat Sci (b) Mathematics: Use iSIS ­ Must be courses with attribute value 55, ES 56, CEE 187 (d) Use iSIS - Must be CEE courses with attribute value: SoE-Engineering (e) Use iSIS

  12. Student:_________________________________ Advisor:_____________________________ ID #:___________________________________

    E-Print Network [OSTI]

    Dennett, Daniel

    (a) Natural Science: Use iSIS ­ Must be courses with attribute value: SoE-Nat Sci (b) Mathematics: Use iSIS ­ Must be courses with attribute value: SoE-Mathematics (c) Foundation Elective: Use iSIS-req of BIO 13, CHEM 1, EOS 1, or PHY 11 Or, Any EM course (d) Use iSIS - Must be ME course, except ME 94, 96

  13. Tufts University --School of Engineering Class of 2013, 2014, 2015

    E-Print Network [OSTI]

    Dennett, Daniel

    ) Natural Science: Use iSIS ­ Must be courses with attribute value: SoE-Nat Sci (b) Mathematics: Use iSIS 160 (d) MATH 161 and 162, ES 56, EE 104, EE 108, BME 141, BIO 132, PHY 153 (e) Use iSIS ­ Must be EE), or use iSIS ­ Must be courses with attribute value: SoE-Engineering (f) Humanity/Art/Social Science (HASS

  14. Tufts University --School of Engineering Class of 2013, 2014, 2015

    E-Print Network [OSTI]

    Dennett, Daniel

    Science: Use iSIS - Must be courses with attribute value: SoE ­ Nat Sci (b) Mathematics: Use iSIS ­ Must be courses with attribute value: SoE - Mathematics (c) Foundation Elective: Use iSIS ­ Must be courses, or PHY 11 . Any EM course Recommended Foundation Electives: COMP 11, ENP 61, ES 4, ES 56, ES 88 (d) Use iSIS

  15. r: Dr. James P B327 Clark Bu

    E-Print Network [OSTI]

    the course skills interact sis PLEMENTAL d electronica 8 AGRIB nline are welcom s for another ompetencies

  16. Student:______________________________ Advisor:_____________________________ ID #:________________________________

    E-Print Network [OSTI]

    Dennett, Daniel

    Project (1 Credit) Matriculation Date: September 2014 #12;BSCPE - Notes (a) Natural Sciences: Use iSIS ­ Must be courses with attribute value: SoE-Nat Sci (b) Mathematics: Use iSIS ­ Must be courses 104, EE 108, BME 141, BIO 132, PHY 153 (e) Use iSIS ­ Must be EE courses with attribute value: So

  17. An analysis of the Mitcham system of peach tree training and pruning

    E-Print Network [OSTI]

    Richter, Robert E.

    1985-01-01T23:59:59.000Z

    AN ANALYS IS OF THE MI TCHAM SYSTEivl OF PEACH TREE TRAINING AND PRUN ING A PROFESS IONAL PAPER by Robert E, Richter Submitted to the College of Agriculture of Texas AbM University in partial fulfillment of the requirements for the degree... of MASTER OF AGRICULTURE December 1985 Hor t iculture Pomology/Agribusiness AN ANALYS IS CF THE MI TCHAM SYSTEM QF PEACH TREE TRAIN ING AND PRUNING A Profess ionel Peper by Robert E. Richter Approved es to style and content by: Cheirman, Advisory...

  18. Nanobiocatalysis and Its Potential Applications. | EMSL

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

    J, JW Grate, and P Wang.2008."Nanobiocatalysis and Its Potential Applications."Trends in Biotechnology 26(11):639-646. doi:10.1016j.tibtech.2008.07.009 Authors: J Kim JW Grate P...

  19. Report: Commissioning Run: March 9-14, 2011 Debra Fischer, Matt Giguere

    E-Print Network [OSTI]

    Tokovinin, Andrei A.

    the leakage rate from CHIRON. Andrei drilled a hole in a side panel of the enclosure (and insulation grating with a new (higher efficiency) grating in vacuum. #12;Figure 2. (left) the iOmega pressure sensor

  20. NETL F 451.1/1-1, Categorical Exclusion Designation Form

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

    Operations Division Dean Stobbe B-39 Generator Pit Grating Cover Install a galvanized steel grating cover over the generator pit on the north side of Building 39. B2.5 - Facility...

  1. Intercity Rail Ridership Forecasting and the Implementation of High-Speed Rail in California

    E-Print Network [OSTI]

    Vaca, Erin

    1993-01-01T23:59:59.000Z

    California Transportation Center is gratefully iv aclmowledged. (CALTRANS) and INTRODUCTION AND BACKGROE~D transit systems, power plants,

  2. Stereo Fixation using Affine Transfer* Stuart M. Fairley Ian D. Reid David W. Murray

    E-Print Network [OSTI]

    Murray, David

    Research Studentship to SMF and by a Glasstone Fellowship to IDR. We are extremely grateful for many useful

  3. Nordisk kernesikkerhedsforskning Norrnar kjarnryggisrannsknir

    E-Print Network [OSTI]

    Research (NKS). The contact person in STUK is Dr. Martti Vilpas. The authors are grateful to the members

  4. Engineering of a High-Throughput Screening System to Identify Cellulosic Biomass,

    E-Print Network [OSTI]

    California at Riverside, University of

    - grated high-throughput (HTP) screening pipeline. Herein, we report on the engineering of a novel HTP

  5. PICOSECOND PULSE SHORTENING USING DYE #5 AS A SATURABLE ABSORBER

    E-Print Network [OSTI]

    George, S.M.

    2012-01-01T23:59:59.000Z

    Energy under Contract W-7405-ENG-48 DISCLAIMER This documentunder Contract Number W-7405-ENG-48. ALH and MB gratefully

  6. CONTRACTOR REPORT SAND98-I617

    E-Print Network [OSTI]

    Fuerschbach, Phillip

    grateful to Frank Bacon, Paul Cooper, Phil Dailey, Roy LeBlanc, Harold Rarrick, Lucien Rice, and Anita

  7. Zucchini Lasagna Say "Cheese," because this healthy version of a favorite comfort food will

    E-Print Network [OSTI]

    Rau, Don C.

    garlic, minced n 1 /8 tsp ginger, grated n 1 1 /2 lbs chicken (breasts, drumsticks), skinless 1. Combine

  8. Hyper dispersion pulse compressor for chirped pulse amplification systems

    DOE Patents [OSTI]

    Barty, Christopher P. J. (Hayward, CA)

    2011-11-29T23:59:59.000Z

    A grating pulse compressor configuration is introduced for increasing the optical dispersion for a given footprint and to make practical the application for chirped pulse amplification (CPA) to quasi-narrow bandwidth materials, such as Nd:YAG. The grating configurations often use cascaded pairs of gratings to increase angular dispersion an order of magnitude or more. Increased angular dispersion allows for decreased grating separation and a smaller compressor footprint.

  9. Crystal Structures of a Plant Trypsin Inhibitor from Enterolobium contortisiliquum (EcTI) and of Its Complex

    E-Print Network [OSTI]

    Sciences, under Contract No. W-31- 109-Eng-38. The authors are grateful to Coordenacao de Aperfeicoamento

  10. Contemporary Mathematics Recent Progress on A-posteriori Error Analysis for the p and

    E-Print Network [OSTI]

    Guo, Benqi

    , and has inte- grated in many commercial and research codes such as ANSYS, PHLEX, STRESS CHECK, and STRIPE

  11. Emergence of scaling associated with complex branched wave structures in optical medium

    E-Print Network [OSTI]

    Lai, Ying-Cheng

    tapered metallic gratings Appl. Phys. Lett. 100, 241104 (2012) InGaP microdisk optical resonators embedded

  12. Studies of yield and quality of grain, yield components, effect of leaf rust, and forage production of mixed varietal populations, and pure stands of varieties in wheat and oats

    E-Print Network [OSTI]

    Da Gama Rose, Renaud Wilfred

    1964-01-01T23:59:59.000Z

    determined (. z analysis of variance as outlined ty Dtee' and Torrie (29), Tr e analys?. of variar;c fo? i m- of wheat grown at College Statior, . ' given in Appendix T. =hie ' ?(eplications were highly sign?fi?an? at Gi 'cv. 1? indic ~ ti:?= thai soil...

  13. UNIVERSIT DE NICE -SOPHIA ANTIPOLIS COLE DOCTORALE STIC

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    - Siemens Corporate Technology tel-00942556,version1-6Feb2014 #12;tel-00942556,version1-6Feb2014 #12 Invited : Mathieu DE CRAENE - Philips Tommaso MANSI - Siemens Corporate Technology tel-00942556,version1 transformations, les paramètres sont analysés par des méth- odes statistiques afin d'obtenir des mesures moyennes

  14. METHANE AND n-BUTANE OXIDATION WITH CO2 UNDER RADIOFREQUENCY PLASMAS OF MODERATE PRESSURES (*)

    E-Print Network [OSTI]

    Boyer, Edmond

    the gas to the reactor walls. It is capacitively coupled to the radiofrequency generator (35 MHz, 10 k ) and constant pressure of 20 torr. Experimental details on discharges parameters, sampling procedure, gas analy1205 METHANE AND n-BUTANE OXIDATION WITH CO2 UNDER RADIOFREQUENCY PLASMAS OF MODERATE PRESSURES

  15. MFR PAPER 1065 The food service industry

    E-Print Network [OSTI]

    .,upported bJ naltonal ad\\ertl\\lng to gain entn intl) the re- tatl market \\l oreo\\t.:r. there are pre,- e\\aluated the producl.~ SURVEY RESULTS The fO"~1\\\\lng 1\\ an anal},i ... of the ...une} re"'pon,e, \\\\hlloh highlight

  16. Mechanical models of the 1975 Kalapana, Hawaii earthquake and tsunami

    E-Print Network [OSTI]

    Kirby, James T.

    interpretation of geological data from Kilauea, along with modeling of the tsunami using recent seismic analyses) a structural interpretation of geological data with (ii) modeling of the tsunami using recent seismic analy, because of its limited onshore expression near Kalapana. We argue that several different interpretations

  17. Al-Hamdan, M. Z.; Crosson, W. L.; Limaye, A. S.; Rickman, D. L.; Quattrochi, D. A.; Estes, M.

    E-Print Network [OSTI]

    (8):33- 41, 55-6. · Charleston AE. New Enviornmental Public Health Tracking Network Includes Spatial Analy Public Health Management Practice, 2008, 14(6), 507­514. · Charleston AE, Banerjee A, Carande-Kulis VG. J Public Health Management Practice, 2008, 14(6), 600-604. · Conti, L., Kearney, G, Whitehead

  18. Un systme de pilotage de la performance publique

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , fondé sur les principes du New Public Management est décrit et analysé. Mots-clés : new public of the public performance of Dubai, based on the principles of New Public Management is described and analyzed. Keywords: new public management, public performance management system, contingency factors, territorial

  19. AUTOMATED QUANTITATIVE ANALYSIS OF CONFOCAL IMAGES OF NEURONAL NETWORK CULTURES

    E-Print Network [OSTI]

    Labate, Demetrio

    of neuronal proteins in subcellular compartments from 3D confocal imagery. 1. INTRODUCTION High resolution- phological features of neurons and to track the sub-cellular distribution and dynamics of neuronal proteins features of neurons to their functional out- put, the lack of rapid and accurate methods for image analy

  20. Frontires sociales, mentales, politiques : sur quelques caractristiques du libralisme. Regard sur la protection sociale.

    E-Print Network [OSTI]

    Boyer, Edmond

    sident Lincoln Johnson, au nom vocateur de War against poverty1 . De nombreux auteurs ont analys cette: A Comparative Analysis", in Bristish Journal of Political Science, 3, nPoverty.J.: Rutgers University Press, 1988 ; Duncan G.J., "Poverty and social Assistance Dynamics in the United States

  1. Variational inequalities with lack of ellipticity. Part I

    E-Print Network [OSTI]

    geometry, mathematical physics, and in the applied sciences. .... the energy, however, one cannot hope for full smoothness of the solution since we are now forced ... U n a future study we plan to analy e the regularity properties of the latter.

  2. VARIATIONAL INEQUALITIES WITH LACK OF ELLIPTICITY. PART I ...

    E-Print Network [OSTI]

    geometry, mathematical physics, and in the applied sciences. .... the energy, however, one cannot hope for full smoothness of the solution since we are now forced ... In a future study we plan to analy&w e the regularity properties of the latter.

  3. Risa-R-411 Nonlinear Finite

    E-Print Network [OSTI]

    å Risa-R-411 Nonlinear Finite Element Analysis of Concrete Structures Niels Saabye Ottosen Risø | other IAEA P. 0. Box 100 A-1400, Vienna, Austria #12;RIS?-R-411 NONLINEAR FINITE ELEMENT ANALYSIS OF CONCRETE STRUCTURES Niels Saabye Ottosen Abstract. This report deals with nonlinear finite element analy

  4. MARINE ECOLOGY PROGRESS SERIES Mar Ecol Prog Ser

    E-Print Network [OSTI]

    INTRODUCTION Carbon to phosphorus ratios (C:P) in aquatic ecosys- tems are an important indicator of food persulfate or chromic acid (Strickland & Parsons 1968) or other oxidizing agents, or irradiation of samples these particulate ratios may influence food quality of phytoplankton to zooplankton grazers. In most analy- ses C

  5. Commercial Fertilizers and Poisonous Insecticides in 1908-9.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1909-01-01T23:59:59.000Z

    and Insecticide Law 5 Form of Tag .............................................. Free Analy-es ............................................. ............................. Directions for Taking Samples ..................................... Explanation of Terms...-( FREE ANALYSIS. The State law provides that any agriculturalist or faraer may take a sample oi any commercial Sertilizer or poisonous insecticide and have an- alysis made, free of ckxge, under rules and regulations prescribed by the State Chemist...

  6. Chicane simula-on update Pavel Snopok

    E-Print Network [OSTI]

    McDonald, Kirk

    seconds to save a 32 Mb field map with grid sizes x=z=10 mm. 2 #12;Scrip 1 #12;Chicane field map In order to speed up G4beamline simula-on it was proposed to use a pre-calculated field map based on the analy-c expressions

  7. Evolution of pulse shapes during compressor scans in a CPA system and control of electron

    E-Print Network [OSTI]

    Geddes, Cameron Guy Robinson

    Evolution of pulse shapes during compressor scans in a CPA system and control of electron used optical pulse compressor, the grating pair with special emphasis on the pulse skewness and its is the grating pulse compressor. In contrast to the most simplistic view and practice, by scanning the grating

  8. Nanocrystal structures

    DOE Patents [OSTI]

    Eisler, Hans J. (Stoneham, MA); Sundar, Vikram C. (Stoneham, MA); Walsh, Michael E. (Everett, MA); Klimov, Victor I. (Los Alamos, NM); Bawendi, Moungi G. (Cambridge, MA); Smith, Henry I. (Sudbury, MA)

    2008-12-30T23:59:59.000Z

    A structure including a grating and a semiconductor nanocrystal layer on the grating, can be a laser. The semiconductor nanocrystal layer can include a plurality of semiconductor nanocrystals including a Group II-VI compound, the nanocrystals being distributed in a metal oxide matrix. The grating can have a periodicity from 200 nm to 500 nm.

  9. Nanocrystal structures

    DOE Patents [OSTI]

    Eisler, Hans J.; Sundar, Vikram C.; Walsh, Michael E.; Klimov, Victor I.; Bawendi, Moungi G.; Smith, Henry I.

    2006-12-19T23:59:59.000Z

    A structure including a grating and a semiconductor nanocrystal layer on the grating, can be a laser. The semiconductor nanocrystal layer can include a plurality of semiconductor nanocrystals including a Group IIVI compound, the nanocrystals being distributed in a metal oxide matrix. The grating can have a periodicity from 200 nm to 500 nm.

  10. Third-order spectral phase compensation in parabolic pulse compression

    E-Print Network [OSTI]

    Boyer, Edmond

    that prisms embedded gratings compressors assert itself as a simple and efficient solution to third on the use of a hybrid compressor system consisting in a set of prisms embedded in a sequence of gratings confirm that, as opposed to traditional gratings compressors, the third-order spectral phase

  11. Proceedings of the Fourth International WLT-Conference on Lasers in Manufacturing 2007, Munich, June 2007 Financial support of this work via DFG priority program 1139 is gratefully acknowledged

    E-Print Network [OSTI]

    Peinke, Joachim

    Proceedings of the Fourth International WLT-Conference on Lasers in Manufacturing 2007, Munich Tailored Femtosecond Pulses for Nanoscale Laser Processing of Dielectrics L. Englert1 , M. Wollenhaupt1 , B of laser control of two basic ionization processes in dielectrics on intrinsic time and intensity scales

  12. November 2010: Happy November! In this month that has us counting our blessings, we are grateful for our wonderful School of Engineering alumni. We enjoyed seeing so many of you at our Big Bash! in

    E-Print Network [OSTI]

    Holliday, JoAnne

    latest newsletter. Happy Thanksgiving! Introduction to Photovoltaics, November 2 Function and Design of Solar Cells, November 10, 2010 Advanced Photovoltaics, November 16 12 - 5 p.m. Bannan Engineering Labs on Energy Management Systems Ram Chinchali, Siemens' Energy Automation Division November 9 12 - 1:30 p

  13. Student:______________________________ Advisor:_____________________________ ID #:________________________________

    E-Print Network [OSTI]

    Dennett, Daniel

    : September 2014 #12;BSEE - Notes (a) Natural Science: Use iSIS ­ Must be courses with attribute value: SoE-Nat Sci (b) Mathematics: Use iSIS ­ Must be courses with attribute value: SoE-Mathematics (c) ES 5, ES 7, PHY 153 (e) Use iSIS ­ Must be EE courses with attribute value: SoE-Engineering (f) EM 51, (a), (b

  14. SOFCSOFC (10kW(10kW )) Stack Stack ( )

    E-Print Network [OSTI]

    Hong, Deog Ki

    & Mitsubishi (band ) 150 kW module Rolls-Royce () 100kW SOFC TOTO, Kyushu () 20kW stack wet process #12;2 SOFC () Mitsubishi Heavy Ind. SIS 250kW 55% Rolls-Royce SIS 250kW (micro GT-SOFC) 53% (125 kW ) Tokyo Gas SIS kW (5kW ) / #12

  15. Advanced polychromator systems for remote chemical sensing (LDRD project 52575).

    SciTech Connect (OSTI)

    Sinclair, Michael B.; Pfeifer, Kent Bryant; Allen, James Joe

    2005-01-01T23:59:59.000Z

    The objective of this LDRD project was to develop a programmable diffraction grating fabricated in SUMMiT V{trademark}. Two types of grating elements (vertical and rotational) were designed and demonstrated. The vertical grating element utilized compound leveraged bending and the rotational grating element used vertical comb drive actuation. This work resulted in two technical advances and one patent application. Also a new optical configuration of the Polychromator was demonstrated. The new optical configuration improved the optical efficiency of the system without degrading any other aspect of the system. The new configuration also relaxes some constraint on the programmable diffraction grating.

  16. Diffraction encoded position measuring apparatus

    DOE Patents [OSTI]

    Tansey, R.J.

    1991-09-24T23:59:59.000Z

    When a lightwave passes through a transmission grating, diffracted beams appear at the output or opposite side of the grating that are effectively Doppler shifted in frequency (phase) whereby a detector system can compare the phase of the zero order and higher order beams to obtain an indication of position. Multiple passes through the grating increase resolution for a given wavelength of a laser signal. The resolution can be improved further by using a smaller wavelength laser to generate the grating itself. Since the grating must only have a pitch sufficient to produce diffracted orders, inexpensive, ultraviolet wavelength lasers can be utilized and still obtain high resolution detection. 3 figures.

  17. A Population Study of the Gray Squirrel in Eastern Texas.

    E-Print Network [OSTI]

    Goodrum, Phil D.

    1940-01-01T23:59:59.000Z

    ................................................ Acknowledgments 32 Summary and Conclusions ......................................... 32 .................................................. Literature Cited 34 POPULA'I'ION STUDY OF THE GRAY SQUIRREL, SCIURUS CAROLINENSIS CAROLINEN- SIS, IN EASTERN TEXAS PHIL...

  18. Argonne wins three R&D 100 awards | Argonne National Laboratory

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

    include: Sequential Infiltration Synthesis (SIS) lithography Advanced Redox Shuttle Additive for Overcharge Protection of Lithium-Ion Batteries Used in Electric Vehicles The...

  19. Bargaining and Influence Costs and the Organization of Economic Activity

    E-Print Network [OSTI]

    Milgrom, Paul; Roberts, John

    1987-01-01T23:59:59.000Z

    Corporation in late 1980 by Tenneco, Inc. (then Americasis illustrative. Although Tenneco had resolved to runbefore a year had passed, Tenneco "had lost 34% of

  20. Polysubstance and alcohol dependence: Unique abnormalities of magnetic resonance-derived brain metabolite levels

    E-Print Network [OSTI]

    Ab, C; Mon, A; Durazzo, TC; Pennington, DL; Schmidt, TP; Meyerhoff, DJ

    2013-01-01T23:59:59.000Z

    synthesis, cellular bioenergetics, glio- sis) and alteredCho), cellular bioenergetics (Creatine, Cr), astroglio-to abnor- mal cellular bioenergetics (lower Cr; Licata and

  1. control population: 10.5 2.6 mg/L all aetiologies: Jo: 9.1 4.4 mg/L

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    have a deficient status in antioxidant vitamins. Therefore, systematic vitamin supplementation could of hydrolysis. (3-lactoglobulin hydroly- sis with these enzymes released peptides which had lost, respectively

  2. ENZYMES AND MICROORGANISMS IN FOOD INDUSTRY WASTE PROCESSING AND CONVERSION TO USEFUL PRODUCTS: A REVIEW OF THE LITERATURE

    E-Print Network [OSTI]

    Carroad, P.A.

    2010-01-01T23:59:59.000Z

    A. L, 1 Alcohol: a Brazil answer the energy sis. ence, 195:an answer d-j energy cris-j s in Brazil (20). ut retuwl ng

  3. The Genealogy of the Great Mongol King Kausri Han Alias bStan-'dzin chos-rgyal (1582-1654)

    E-Print Network [OSTI]

    Sadhukhan, Sanjit Kumar

    1992-01-01T23:59:59.000Z

    . It is said that Sur-tsha's (10) son called Tshe-brtan-guii (11) lives in Cha-har still now. bSod-nams bkra-sis' (3) son was Nor-bu phun-tshogs (12). The latter's (12) son was bKra-sis dpal-'byor (13). But the latter (13) had no sons. bSod-nams rdo...

  4. Extreme State of Matter Physics at FAIR BorisBoris SharkovSharkov

    E-Print Network [OSTI]

    accelerator systems to be constructed in Darmstadt High-Energy Storage Ring HESR Synchrotrons SIS100 SIS300 p Production Target 2Sharkov #12;3 Austria IndiaChina Finnland France Germany Greece UKItaly Poland Slovakia Convention SWEDEN Oct.2010 Finland, France, Germany, India, Poland, Romania, Russia, SlovenFinland, France

  5. The Jackson School of International Studies UNIVERSITY OF WASHINGTON

    E-Print Network [OSTI]

    Anderson, Richard

    -modern course requirement ES = Fulfills modern European survey course requirement Required Core Courses SIS 201-modern"others";therelationshipbetweenmodernityandmodernemancipatory movements of postmodernity. Required Core Course SIS 201 MWF 12:30-1:20 Lucero, J. 5 Credits TTh Quiz Sections Req. Making

  6. Microwave band gap and cavity mode in spoof-insulator-spoof waveguide with multiscale structured surface

    E-Print Network [OSTI]

    Zhang, Qiang; Han, Dezhuan; Qin, Fei Fei; Zhang, Xiao Ming; Yao, Yong

    2015-01-01T23:59:59.000Z

    We propose a multiscale spoof-insulator-spoof (SIS) waveguide by introducing periodic geometry modulation in the wavelength scale to a SIS waveguide made of perfect electric conductor. The MSIS consists of multiple SIS subcells. The dispersion relationship of the fundamental guided mode of the spoof surface plasmon polaritons (SSPPs) is studied analytically within the small gap approximation. It is shown that the multiscale SIS possesses microwave band gap (MBG) due to the Bragg scattering. The "gap maps" in the design parameter space are provided. We demonstrate that the geometry of the subcells can efficiently adjust the effective refraction index of the elementary SIS and therefore further control the width and the position of the MBG. The results are in good agreement with numerical calculations by the finite element method (FEM). For finite-sized MSIS of given geometry in the millimeter scale, FEM calculations show that the first-order symmetric SSPP mode has zero transmission in the MBG within frequency...

  7. Phase plate technology for laser marking of magnetic discs

    DOE Patents [OSTI]

    Neuman, Bill (Livermore, CA); Honig, John (Livermore, CA); Hackel, Lloyd (Livermore, CA); Dane, C. Brent (Livermore, CA); Dixit, Shamasundar (Livermore, CA)

    1998-01-01T23:59:59.000Z

    An advanced design for a phase plate enables the distribution of spots in arbitrarily shaped patterns with very high uniformity and with a continuously or near-continuously varying phase pattern. A continuous phase pattern eliminates large phase jumps typically expected in a grating that provides arbitrary shapes. Large phase jumps increase scattered light outside of the desired pattern, reduce efficiency and can make the grating difficult to manufacture. When manufacturing capabilities preclude producing a fully continuous grating, the present design can be easily adapted to minimize manufacturing errors and maintain high efficiencies. This continuous grating is significantly more efficient than previously described Dammann gratings, offers much more flexibility in generating spot patterns and is easier to manufacture and replicate than a multi-level phase grating.

  8. Phase plate technology for laser marking of magnetic discs

    DOE Patents [OSTI]

    Neuman, B.; Honig, J.; Hackel, L.; Dane, C.B.; Dixit, S.

    1998-10-27T23:59:59.000Z

    An advanced design for a phase plate enables the distribution of spots in arbitrarily shaped patterns with very high uniformity and with a continuously or near-continuously varying phase pattern. A continuous phase pattern eliminates large phase jumps typically expected in a grating that provides arbitrary shapes. Large phase jumps increase scattered light outside of the desired pattern, reduce efficiency and can make the grating difficult to manufacture. When manufacturing capabilities preclude producing a fully continuous grating, the present design can be easily adapted to minimize manufacturing errors and maintain high efficiencies. This continuous grating is significantly more efficient than previously described Dammann gratings, offers much more flexibility in generating spot patterns and is easier to manufacture and replicate than a multi-level phase grating. 3 figs.

  9. Updated January 2010 Page 1 of 9 Facilities Planning

    E-Print Network [OSTI]

    van den Berg, Jur

    'est lancé dans l'étude comparée de 600 cas appliqués aux partages d'informations sur les plantes, les côté de la gestion par des droits de propriété individuels ou par l'?tat, il peut exister un troisième initiatives, il est possible de mieux soutenir les biens communs existants. Concrètement, un des cas analysés

  10. An evaluation of sesame oil meal and Peruvian fish for egg-strain and broiler-type breeder hens

    E-Print Network [OSTI]

    Smith, Edwin B

    1964-01-01T23:59:59.000Z

    meal as protein sources for egg-strain hens . . . . . . . . ~ ~ . ~ 16 Composition of. laying hen diets . . . . . . ~ . 17, 18 Calculated percent protein and certain amino acid content in laying hen diets from analyses of ingredients... . . . , . . . . . . . . . ~ ~ , 19 Experimental design . . . . . . . . . . . ~ . . 20 Composition of broiler-type breeder diets ~ . . 21 Calculated protein and certain amino acid con- tent in broiler-type breeder hen diets from analy- ses of ingredients...

  11. Evaluation of whole plant grain sorghum silage processing methods and lasalocid sodium levels on stocker calf performance and rumen fermentation

    E-Print Network [OSTI]

    Gutierrez Garza, Gerardo

    1980-01-01T23:59:59.000Z

    appar- ent nutrient digestibilities of the two whole plant grain sorghum silages used in the growth trial plus a third silage processing method. Results of the growth trial indicated that steers fed whole plant grain sorghum silage with whole grain... with values obtained by Fernandez (1980) for whole plant grain sorghum silage. The feed composition analy- ses of the digestion trial compared favorably with the feed composition of the growth trial which would increase the validity of mutually supporting...

  12. Trajectoires et ruptures

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    rapide typologie sont vite atteintes tant, dans toutes les études de cas analysées ici, la continuité « rapatriés » burkinabé de Côte d'Ivoire : réinstallations au pays et nouveaux projets migratoires ; celui nord ou vers le sud. De nouveau, des contextes différents qui rendent compte toutefois d'une suspicion

  13. Ash, calcium, phosphorus and magnesium content of the metacarpus of hereford cows under different nutritional and physiological conditions

    E-Print Network [OSTI]

    Haque, Mozammel

    1967-01-01T23:59:59.000Z

    ASH, CALCIUM, PHOSPHORUS AND MAGNESIUM CONTENT OF THE METACARPUS OF HEREFORD COWS UNDER DIFFERENT NUTRITIONAL AND PHYSIOLOGICAL CONDITIONS A Thesis By MOZAMMEL HAQUE Submitted to the Graduate College of the Texas A&M University in partial... centages of Calcium, Phosphorus snd Magnesium in Bone Ash for Cows Gi;en Different Treatments During Pre- And Post-Partum Periods 22 10 Analysis of Variance oi Calcium in Bone Ash Dun an's )tultiple tvange Test 1'or Calcium in Bone Ash. Analy...

  14. Brookhaven National Laboratory/ LIGHT SOURCES DIRECTORATE Subject: VACUUM PROCEDURES FOR BEAMLINE U7A

    E-Print Network [OSTI]

    Ohta, Shigemi

    , such that this valve will close if this pressure reading rises above 110-5 Torr. N.B.: the grating chamber ion pump Chamber A. Bleed-Up 1. Notify the Coordinator (Beeper 5824). 2. Close and seal Valve 2A and Valve 1A. 3 a yellow tag on the valve.** C. Oxygen-cleaning mode of operation of grating chamber The grating chamber

  15. The construction and operation of a flashlamp pumped tunable narrow linewidth dye laser

    E-Print Network [OSTI]

    Hilty, Bruce Robert

    1979-01-01T23:59:59.000Z

    . Grazing Incidence and Littrow Gratings in the Laser Cavity . C. Theoretical Linewidth. I II CONSTRUCTION OF THE FLASHLAMP PUMPED DYE LASER. A. Optical Systems. 1. Laser Head . 2. Resonator Mounts B. Circulatory Systems. C. Electrical System. IV... and Littrow mount grating Diagram of grazing incidence and Littrow mount gratings showing the various inci- dent and diffracted rays . The laser head . Block diagram of the circulatory system. Block diagram of the electrical system . The geometricl path...

  16. Use of Dynamical Undulator Mechanism to Produce Short Wavelength Radiation in Volume FEL (VFEL)

    E-Print Network [OSTI]

    V. G. Baryshevsky; K. G. Batrakov

    2002-09-06T23:59:59.000Z

    VFEL lasing in system with dynamical undulator is described. In this system radiation of long wavelength creates the undulator for lasing on shorter wavelength. Two diffraction gratings with different spatial periods form VFEL resonator. The grating with longer period pumps the resonator with long wavelength radiation to provide necessary amplitude of undulator field. The grating with shorter period makes mode selection for short wavelength radiation. Lasing of such a system in terahertz frequency range is discussed.

  17. Contents 1. Introduction

    E-Print Network [OSTI]

    2010-06-09T23:59:59.000Z

    Jun 9, 2010 ... sity of Waterloo, when I was on a postdoctoral position there, and I gratefully acknowledge them for providing a splendid working environment.

  18. I NUREGICR--5688

    Office of Scientific and Technical Information (OSTI)

    vided by Robert Armstrong, David Crouthamel, Chongwei Ran, Shyh-shyan Hsu, and David Smith. Mike Porter has typed, assembled, and produced the report. We gratefully acknowledge...

  19. Land use/land cover change dynamics and drivers in a low-grade marginal coffee growing region of Veracruz, Mexico

    E-Print Network [OSTI]

    Ellis, Edward A.; Baerenklau, Kenneth A.; Marcos-Martnez, Raymundo; Chvez, Edgar

    2010-01-01T23:59:59.000Z

    We are grateful to Irving Uriel Herna ndez Go mez and Cesar Gallo Go mez for their support with GIS processing and ?

  20. Thin-film spectroscopic sensor

    DOE Patents [OSTI]

    Burgess, Jr., Lloyd W. (Seattle, WA); Goldman, Don S. (Richland, WA)

    1992-01-01T23:59:59.000Z

    There is disclosed an integrated spectrometer for chemical analysis by evanescent electromagnetic radiation absorption in a reaction volume. The spectrometer comprises a noninteractive waveguide, a substrate, an entrance grating and an exit grating, an electromagnetic radiation source, and an electromagnetic radiation sensing device. There is further disclosed a chemical sensor to determine the pressure and concentration of a chemical species in a mixture comprising an interactive waveguide, a substrate, an entrance grating and an exit grating, an electromagnetic radiation source, and an electromagnetic radiation sensing device.

  1. acrylic resins part: Topics by E-print Network

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

    (being developed for the full scale DEAP-3600 detector). , 2012-01-01 6 Liquid Resin Infusion process monitoring with superimposed Fibre Bragg Grating sensor Physics Websites...

  2. III

    E-Print Network [OSTI]

    2014-03-18T23:59:59.000Z

    Mar 18, 2014 ... 7801, Springer, 2013, pp. 62. 73, ISBN 978-3-642-36693-2. The authors gratefully acknowledge partial support from the National Science...

  3. ESS 2012 Peer Review - Experimental Investigation of Silicon...

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

    27, 2012 Robert Kaplar, David Hughart, Sandeepan DasGupta, Matthew Marinella, Mark Smith, and Stanley Atcitty The authors gratefully acknowledge the support of Dr. Imre Gyuk...

  4. Calibration of Modulation Transfer Function of Surface Profilometers with 1D and 2D Binary Pseudo-random Array Standards

    E-Print Network [OSTI]

    Yashchuk, Valeriy V.

    2009-01-01T23:59:59.000Z

    Grating Standard for Calibration of Surface Profilometers,Calibration of Modulation Transfer Function of Surfaceas a standard test surface for calibration of the modulation

  5. Mediterranean clonal selections evaluated for modern hedgerow olive oil production in Spain

    E-Print Network [OSTI]

    Tous, Joan; Romero, Agusti; Hermoso, Juan Francisco; Ninot, Antonia

    2011-01-01T23:59:59.000Z

    station, Constant, Catalonia, Spain. We are grateful toBoella farm (La Canonja, Spain) for their collaboration inolive oil production in Spain Paul M. Vossen by Joan Tous,

  6. E-Print Network 3.0 - aqueous scrubber system Sample Search Results

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

    wet scrubber 7. Powder activated carbon injection system 8... . 300 GWh annually district heating 70 GWh electricity 4. Moving Grates 5. Wet Scrubber to eliminate Source: Columbia...

  7. Mathematical Models for Multi Container Loading Problems 1 ...

    E-Print Network [OSTI]

    2015-05-12T23:59:59.000Z

    Valdes gratefully acknowledge partial financial support by the Spanish Ministry of Science and. Technology, DPI2011-24977, by Project PPII-2014-011-A,...

  8. 3245.ps.gz

    E-Print Network [OSTI]

    2012-01-18T23:59:59.000Z

    The author thanks Humboldt Fundation for the financial assistance during this visit, and he is much more than grateful to Professor Schittkowski for his warm...

  9. Multiparameter Fiber Optic Sensing System for Monitoring Enhanced...

    Open Energy Info (EERE)

    sensing (DTSS), distributed pressure fiber Bragg gratings (FBG) and coherent Rayleigh optical time domain reflectometry (COTDR) for distributed vibration sensing will be...

  10. ATMOSPHERIC AEROSOL RESEARCH, ANNUAL REPORT 1976-77

    E-Print Network [OSTI]

    Novakov, T.

    2010-01-01T23:59:59.000Z

    by Chester W. Spicer, Battelle, Columbus Laboratories,We are grateful to C. Spicer, Battelle Memorial Institute,techniques at LBL and Battelle, Columbus Laboratories,2 are

  11. air update number: Topics by E-print Network

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

    thanks for superb research assistance. The generous financial support of the U.S. Environment Protection Agency and the Hewlett Foundation is gratefully acknowledged. Most...

  12. advanced human-system interface: Topics by E-print Network

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

    efboll, waeschg Abstract Advanced multimedia applications call for inte- grated DBMS support, i.e., the integrated Boll, Susanne 112 Ultralow thermal conductivity and the...

  13. application oriented structural: Topics by E-print Network

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

    efboll, waeschg Abstract Advanced multimedia applications call for inte- grated DBMS support, i.e., the integrated Boll, Susanne 47 Applications of Image Understanding in...

  14. advanced human-system interfaces: Topics by E-print Network

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

    efboll, waeschg Abstract Advanced multimedia applications call for inte- grated DBMS support, i.e., the integrated Boll, Susanne 112 Ultralow thermal conductivity and the...

  15. 8 Kerr Administration Building (541) 737-4085 www.oregonstate.edu/career Adopted from the American Board of Pediatrics, and similar to professional ethics in many organizations

    E-Print Network [OSTI]

    Escher, Christine

    ______________________________________________________________ 8 Kerr Administration Building #12;______________________________________________________________ 8 Kerr Administration Building others want to help Ambitious, Modest, Confident, Smart, Kind, Joyous, Optimistic, Grateful Making

  16. EMSL Staff | EMSL

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

    (509) 371-6500 Dr. Grate has a distinguished career in chemical microsensors and microfluidics integrating aspects of chemical, material and measurement sciences into new...

  17. Contacts For "G" | EMSL

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

    (509) 371-6500 Dr. Grate has a distinguished career in chemical microsensors and microfluidics integrating aspects of chemical, material and measurement sciences into new...

  18. EMSL Staff - Alphabetical | EMSL

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

    (509) 371-6500 Dr. Grate has a distinguished career in chemical microsensors and microfluidics integrating aspects of chemical, material and measurement sciences into new...

  19. Mixing

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

    Pyrocamera t 0 5 ps 10 ps Pyrocamera Diffractive grating wavenumber 1.3 cm -1 Fourier transform Measured Simulated :) Single-shot :) Simple reliable :) Indiv. pulse...

  20. High channel density wavelength division multiplexer with defined diffracting means positioning

    DOE Patents [OSTI]

    Jannson, Tomasz P. (Redondo Beach, CA); Jannson, Joanna L. (Redondo Beach, CA); Yeung, Peter C. (Redondo Beach, CA)

    1990-01-01T23:59:59.000Z

    A wavelength division multiplexer/demultiplexer having optical path lengths between a fiber array and a Fourier transform lens, and between a dispersion grating and the lens equal to the focal length of the lens. The optical path lengths reduce losses due to angular acceptance mismatch in the multiplexer. Close orientation of the fiber array about the optical axis and the use of a holographic dispersion grating reduces other losses in the system. Multi-exposure holographic dispersion gratings enable the multiplexer/demultiplexer for extremely broad-band simultaneous transmission and reflection operation. Individual Bragg plane sets recorded in the grating are dedicated to and operate efficiently on discrete wavelength ranges.

  1. Fast methods for inverse wave scattering problems

    E-Print Network [OSTI]

    Lee, Jung Hoon, Ph. D. Massachusetts Institute of Technology

    2008-01-01T23:59:59.000Z

    Inverse wave scattering problems arise in many applications including computerized/diffraction tomography, seismology, diffraction/holographic grating design, object identification from radar singals, and semiconductor ...

  2. accurate svm-based gene: Topics by E-print Network

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

    Websites Summary: to be cost effective. Index Terms--Computational intelligence system, fuzzy logic, nontechnical loss, pattern- grating human intelligence and knowledge into the...

  3. area surrounding suez: Topics by E-print Network

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

    Also, I am grateful to Resource Chief Brian Kenner 5 Jamaica Bay BioBlitz 2010 Floyd Bennett Field and Surrounding Areas Environmental Sciences and Ecology Websites Summary:...

  4. 331ZnO nanostructured transparent thin films by PLD Corresponding author: M. Suchea, e-mail: mirasuchea@iesl.forth.gr

    E-Print Network [OSTI]

    -to-band transitions [1], while it can be used as transparent electrode in solar cells and flat panel displays, grating

  5. Interior-Point Algorithms for a Generalization of Linear Programming ...

    E-Print Network [OSTI]

    2011-02-23T23:59:59.000Z

    Feb 23, 2011 ... Acknowledgement. I am grateful to Eric Denardo for a series of conversations that stimulated my interest in the topic of this paper. 11...

  6. acknowledge cultural difference: Topics by E-print Network

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

    ry,reviewedandcompiledbyWilliam D. Murphree, and editedby SarahHightower. Grateful acknowledgement is given to the Special Gpo Price Aero-astrodynamics; Publicationssection...

  7. BCOL RESEARCH REPORT 07.05

    E-Print Network [OSTI]

    2008-04-14T23:59:59.000Z

    Acknowledgement. We are grateful to Shabbir Ahmed for thoughtful comments on an earlier version of the paper and discussions on related topics. References.

  8. Global convergence of trust-region algorithms for constrained ...

    E-Print Network [OSTI]

    2012-09-27T23:59:59.000Z

    Sep 27, 2012 ... Acknowledgement. The authors are grateful to Jos Mario Mart?nez who encouraged them to pursue this investigation and to Luis Mauricio...

  9. An novel ADM for finding Cournot equilibria of bargaining problem ...

    E-Print Network [OSTI]

    2009-09-26T23:59:59.000Z

    Acknowledgement: We are grateful to Professor He Bingsheng and Professor Yu Jian, for their enlightening of the idea of this paper, and much useful advices to...

  10. A Multi-Product Risk-Averse Newsvendor with Exponential Utility ...

    E-Print Network [OSTI]

    2011-04-14T23:59:59.000Z

    Apr 5, 2011 ... Acknowledgement. The research was partially supported by the NSF Award CMMI-0965689. The authors are very grateful to three anonymous...

  11. On LP Relaxations for the Pattern Minimization Problem

    E-Print Network [OSTI]

    2009-06-30T23:59:59.000Z

    Acknowledgement. The authors are grateful to the anonymous Referees whose comments helped improve the quality of this paper. 7. Appendix: from (0) to (2).

  12. A Heritage Development Plan for Nacogdoches

    E-Print Network [OSTI]

    Ellis, David R.

    1998-01-01T23:59:59.000Z

    \\sis PART #21;#29; %anita CreeN Promenade Master Plan PART #22;#29; An Economic Anal\\sis Each of the three parts Zas produced b\\ graduate facult\\ and students associated Zith the Te[as Target Cities Program at Te[as A&M UniYersit\\#17; The Te... image of Nacogdoches prepared b\\ Urban Planning and Architecture students#17; The urban image anal\\sis serYed as the basis for the second component#29; The %anita CreeN Promenade Master Plan#17; This part of the document Zas produced b\\ graduate...

  13. Somatic Sex Determination in D. melanogaster: Insights in the Establishment to Maintenance Transition

    E-Print Network [OSTI]

    Gonzalez Rojos, Alejandra Noemi

    2012-07-16T23:59:59.000Z

    Pe to regulation by SxlPm occurs. The sisA protein (SisA), as part of the b-ZIP protein family, is thought to bind to its target as a dimer, but a dimerization partner has not yet been found. This work uses knockouts and germ-line clones to examine interaction.... ........................................................................................ 13 Figure 4 Modern model of the molecular sex determination mechanism ............... 17 Figure 5 b-ZIP protein dimerization topology. ........................................................ 19 Figure 6 In-situ hybridization of Sis A...

  14. CEC4002012006CMF-REV CALIFORNIA ENERGY COMMISSION

    E-Print Network [OSTI]

    , PECI, and the Heschong Mahone Group. The authors are grateful to the many people and organizations reflect, to a large extent, the comments made by the many people who took time to carefully review earlier Division for his vision and support of the 2013 Standards. The authors are grateful to the many people

  15. CEC-400-2013-001-SD-REV CALIFORNIA ENERGY COMMISSION

    E-Print Network [OSTI]

    , and the Heschong Mahone Group. The authors are grateful to the many people and organizations that contributed extent, the comments made by the many people who took time to carefully review earlier versions and support of the 2013 Standards. The authors are grateful to the many people and organizations

  16. CEC-400-2013-004-CMF CALIFORNIA ENERGY COMMISSION

    E-Print Network [OSTI]

    , PECI, and the Heschong Mahone Group. The authors are grateful to the many people and organizations reflect, to a large extent, the comments made by the many people who took time to carefully review earlier Division for his vision and support of the 2013 Standards. The authors are grateful to the many people

  17. CEC-400-2013-004-SD CALIFORNIA ENERGY COMMISSION

    E-Print Network [OSTI]

    , PECI, and the Heschong Mahone Group. The authors are grateful to the many people and organizations reflect, to a large extent, the comments made by the many people who took time to carefully review earlier Division for his vision and support of the 2013 Standards. The authors are grateful to the many people

  18. CEC-400-2013-002-CMF CALIFORNIA ENERGY COMMISSION

    E-Print Network [OSTI]

    , and the Heschong Mahone Group. The authors are grateful to the many people and organizations that contributed extent, the comments made by the many people who took time to carefully review earlier versions and support of the 2013 Standards. The authors are grateful to the many people and organizations

  19. CEC-400-2013-001-SD CALIFORNIA ENERGY COMMISSION

    E-Print Network [OSTI]

    , and the Heschong Mahone Group. The authors are grateful to the many people and organizations that contributed extent, the comments made by the many people who took time to carefully review earlier versions and support of the 2013 Standards. The authors are grateful to the many people and organizations

  20. CEC-400-2013-002-SD CALIFORNIA ENERGY COMMISSION

    E-Print Network [OSTI]

    , and the Heschong Mahone Group. The authors are grateful to the many people and organizations that contributed extent, the comments made by the many people who took time to carefully review earlier versions and support of the 2013 Standards. The authors are grateful to the many people and organizations

  1. Packed Bed Combustion: An Overview

    E-Print Network [OSTI]

    Hallett, William L.H.

    Packed Bed Combustion: An Overview William Hallett Dept. of Mechanical Engineering Universit d'Ottawa - University of Ottawa #12;Packed Bed Combustion - University of Ottawa - CICS 2005 Introduction air fuel feedproducts xbed grate Packed Bed Combustion: fairly large particles of solid fuel on a grate, air supplied

  2. Development and operation of a high-throughput accurate-wavelength lens-based spectrometera)

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

    Bell, Ronald E.

    2014-11-01T23:59:59.000Z

    A high-throughput spectrometer for the 400-820 nm wavelength range has been developed for charge exchange recombination spectroscopy or general spectroscopy. A large 2160 mm-1 grating is matched with fast f /1.8 200 mm lenses, which provide stigmatic imaging. A precision optical encoder measures the grating angle with an accuracy morewavelength calibration.less

  3. The Astrophysical Journal, 625:L59--L62, 2005 The Astronomical

    E-Print Network [OSTI]

    Wargelin, Bradford J.

    from Chan­ dra spectra. example, (2002) that observed 3s--2p/3d--2p in elliptical galaxy NGC 4636 1The Astrophysical Journal, 625:L59--L62, 2005 20 The Astronomical All reserved. Printed in U obtained Chandra Energy Transmission Grating High Energy Transmission Grating Spectrometers, Far

  4. 1 Copyright 2009 by ASME Proceedings of the 17th Annual North American Waste-to-Energy Conference

    E-Print Network [OSTI]

    models. On the other hand, full-scale grate models have not been used for examining solid waste mixing these phenomena, a full-scale physical model of the reverse acting grate was built and used for investigating residence time analysis using clay, wood and ceramic spheres in a small-scale model of the reverse acting

  5. Diffractive element in extreme-UV lithography condenser

    DOE Patents [OSTI]

    Sweatt, William C. (Albuquerque, NM); Ray-Chaudhurl, Avijit K. (Livermore, CA)

    2000-01-01T23:59:59.000Z

    Condensers having a mirror with a diffraction grating in projection lithography using extreme ultra-violet significantly enhances critical dimension control. The diffraction grating has the effect of smoothing the illumination at the camera's entrance pupil with minimum light loss. Modeling suggests that critical dimension control for 100 nm features can be improved from 3 nm to less than about 0.5 nm.

  6. Characterization of Two-Photon Excitation: Coherent Control and Nonlinear Propagation in Transparent Media

    E-Print Network [OSTI]

    Poudel, Milan Prasad

    2010-10-12T23:59:59.000Z

    CEO detection [26]. .....................................................................16 2.7 Beat signal from the Rainbow oscillator (35 dB)...........................................16 2.8 Regenerative Cavity [23... inside a stretcher by separating in time its Fig. 2.3. Schematic of the (a) grating stretcher and (b) grating compressor b)a) 12 frequency components. Then this pulse is directed into the amplifier regenerative cavity...

  7. LONGITUDINAL PROFILE MONITOR USING SMITH-PURCELL RADIATION: RECENT RESULTS FROM THE E-203 COLLABORATION

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    accelerated a continuous beam of electrons of 300 keV. With an optical grating they observed an emitted] User Facility at SLAC National Accelerator Laboratory is to extend this demonstration to the sub electromagnetic simulations of the interactions between the beam and the grating as well as the expected

  8. Test surfaces useful for calibration of surface profilometers

    DOE Patents [OSTI]

    Yashchuk, Valeriy V; McKinney, Wayne R; Takacs, Peter Z

    2013-12-31T23:59:59.000Z

    The present invention provides for test surfaces and methods for calibration of surface profilometers, including interferometric and atomic force microscopes. Calibration is performed using a specially designed test surface, or the Binary Pseudo-random (BPR) grating (array). Utilizing the BPR grating (array) to measure the power spectral density (PSD) spectrum, the profilometer is calibrated by determining the instrumental modulation transfer.

  9. STRAIN MONITORING IN STIFFENED COMPOSITE PANELS USING EMBEDDED FIBRE OPTICAL AND STRAIN GAUGE SENSORS

    E-Print Network [OSTI]

    Boyer, Edmond

    (SHM) system based on Fibre Optic Bragg Grating (FOBG) sensors and standard resistance strain gauges for CFRP fuselage stiffened panels based on fibre optic Bragg grating sensors for the Green Regional. Among these approaches, methods based on optical [1]-[6] sensors are among the most rapidly developing

  10. Microfluidic design DOI: 10.1002/smll.200600211

    E-Print Network [OSTI]

    Prentiss, Mara

    Microfluidic design DOI: 10.1002/smll.200600211 Flowing Lattices of Bubbles as Tunable, Self demonstrate tunable, fluidic, two-dimensional diffraction gratings based on a microfluidic platform comprising with a wavelength of 632 nm. Keywords: bubbles diffraction gratings flow focusing microfluidics self

  11. Compact wavelength division multiplexers and demultiplexers

    E-Print Network [OSTI]

    Friesem, Asher A.

    as in the near infrared are presented. 2002 Optical Society of America OCIS codes: 050.1970, 050.1950, 050 is based on a planar optics configuration in which several DOEs, each a simple reflection linear grating. The configuration is composed of two identical DOEs, recorded on the same substrate, that act as reflection gratings

  12. Increasing the output of a Littman-type laser by use of an intracavity Faraday rotator

    E-Print Network [OSTI]

    Hart, Gus

    are readily available at a variety of wavelengths from the red to the near infrared. They require their advantages. The sim- pler of the two designs is the Littrow scheme. In this arrangement a reflection grating. The zeroth- order grating reflection is used as the output coupler to extract light from the cavity. Light

  13. Evolution and Hydrodynamics of the Very-Broad X-ray Line Emission in SN1987A

    E-Print Network [OSTI]

    Dewey, Dan

    Observations of SN 1987A by the Chandra High Energy Transmission Grating (HETG) in 1999 and the XMM-Newton Reflection Grating Spectrometer (RGS) in 2003 show very broad (v-b) lines with a full width at half-maximum (FWHM) ...

  14. Diffractive element in extreme-UV lithography condenser

    DOE Patents [OSTI]

    Sweatt, William C. (Albuquerque, NM); Ray-Chaudhuri, Avijit (Livermore, CA)

    2001-01-01T23:59:59.000Z

    Condensers having a mirror with a diffraction grating in projection lithography using extreme ultra-violet significantly enhances critical dimension control. The diffraction grating has the effect of smoothing the illumination at the camera's entrance pupil with minimum light loss. Modeling suggests that critical dimension control for 100 nm features can be improved from 3 nm to less than about 0.5 nm.

  15. Martin Glynn FICFor SCOPING OF A

    E-Print Network [OSTI]

    .ruraldevelopment.org.uk The Forestry Commission gratefully acknowledges the financial support of Renewables East in the preparation of England Region V List of Interviewees Acknowledgement The preparation of this study would not have been and individuals in the region and further afield, to whom the authors gratefully acknowledge their gratitude

  16. NSLS-II Experimental Tools (NEXT) Progress Report October 2012

    E-Print Network [OSTI]

    Johnson, Peter D.

    the heat load required for the FXI beamline. Figure 3. Measured intensity distribution of the focus cone) was completed for the first collimating mirror subjected to twice the expected maximum heat load (~2.6 k, calculated energy efficiencies for four gratings: 800 l/mm, 600 l/mm, and two 1200 l/mm gratings

  17. Fast amplitude and delay measurement for characterization of optical devices

    E-Print Network [OSTI]

    Thompson, Michael Thomas

    2006-10-30T23:59:59.000Z

    of the measured magnitude response of an Acetylene gas cell and comparing it to the integral of the measured group delay. The average deviation between the two methods is 0.1 radians. An Acetylene gas cell, fiber Bragg grating, and chirped Bragg grating are tested...

  18. High-efficiency spectral purity filter for EUV lithography

    DOE Patents [OSTI]

    Chapman, Henry N. (Livermore, CA)

    2006-05-23T23:59:59.000Z

    An asymmetric-cut multilayer diffracts EUV light. A multilayer cut at an angle has the same properties as a blazed grating, and has been demonstrated to have near-perfect performance. Instead of having to nano-fabricate a grating structure with imperfections no greater than several tens of nanometers, a thick multilayer is grown on a substrate and then cut at an inclined angle using coarse and inexpensive methods. Effective grating periods can be produced this way that are 10 to 100 times smaller than those produced today, and the diffraction efficiency of these asymmetric multilayers is higher than conventional gratings. Besides their ease of manufacture, the use of an asymmetric multilayer as a spectral purity filter does not require that the design of an EUV optical system be modified in any way, unlike the proposed use of blazed gratings for such systems.

  19. Imaging spectrometer wide field catadioptric design

    DOE Patents [OSTI]

    Chrisp; Michael P. (Danville, CA)

    2008-08-19T23:59:59.000Z

    A wide field catadioptric imaging spectrometer with an immersive diffraction grating that compensates optical distortions. The catadioptric design has zero Petzval field curvature. The imaging spectrometer comprises an entrance slit for transmitting light, a system with a catadioptric lens and a dioptric lens for receiving the light and directing the light, an immersion grating, and a detector array. The entrance slit, the system for receiving the light, the immersion grating, and the detector array are positioned wherein the entrance slit transmits light to the system for receiving the light and the system for receiving the light directs the light to the immersion grating and the immersion grating receives the light and directs the light through the system for receiving the light to the detector array.

  20. Deformation behavior of cylindrical block copolymer bicrystals : pathway to understanding block copolymer grain boundaries

    E-Print Network [OSTI]

    Wanakamol, Panitarn

    2006-01-01T23:59:59.000Z

    Model bicrystals made by adhering pieces of near-single-crystal styrene-isoprene-styrene (SIS) cylindrical block copolymer (BCP), produced by a roll-casting process; yield various types of pure tilt grain boundaries. The ...

  1. Quasiparticle and Phonon Transport in Superconducting Particle Detectors

    E-Print Network [OSTI]

    Burnell, Gavin

    For over a decade now there has been much research into the use of superconductors in X-ray, gamma ray and other particle detectors. Detectors based on superconductor-insulator-superconductor(SIS) and superconductor-insulator-normal metal...

  2. The use of sequential indicator simulation to characterize geostatistical uncertainty; Yucca Mountain Site Characterization Project

    SciTech Connect (OSTI)

    Hansen, K.M.

    1992-10-01T23:59:59.000Z

    Sequential indicator simulation (SIS) is a geostatistical technique designed to aid in the characterization of uncertainty about the structure or behavior of natural systems. This report discusses a simulation experiment designed to study the quality of uncertainty bounds generated using SIS. The results indicate that, while SIS may produce reasonable uncertainty bounds in many situations, factors like the number and location of available sample data, the quality of variogram models produced by the user, and the characteristics of the geologic region to be modeled, can all have substantial effects on the accuracy and precision of estimated confidence limits. It is recommended that users of SIS conduct validation studies for the technique on their particular regions of interest before accepting the output uncertainty bounds.

  3. Variable Selection for Ultra High Dimensional Data

    E-Print Network [OSTI]

    Song, Qifan

    2014-05-29T23:59:59.000Z

    of the proposed approach have been made with the penalized likelihood approaches, such as Lasso, elastic net, SIS and ISIS. The numerical results show that the proposed approach generally outperforms the penalized likelihood approaches. The models selected...

  4. A hierarchical perspective on the ecology of biological invasions:: impact of red imported fire ants on grassland ecosystems

    E-Print Network [OSTI]

    Stoker, Revin Lee

    1992-01-01T23:59:59.000Z

    was provided by the Rob and Bessie Welder Wildlife Foundation. ABSTRACT. ACKNOWLEDGMENTS . TABLE OF CONTENTS LIST OF TABLES. UST OF FIGURES. INTRODUCTION . . LITERATURE REVIEW. TABLE OF CONTENTS Page lu . v Vill Background on Soleno sis invicta...

  5. ORIGINAL INVESTIGATION Latent toxoplasmosis reduces gray matter density in schizophrenia

    E-Print Network [OSTI]

    Flegr, Jaroslav

    (Jones et al. 2001).The congenital toxoplasmo- sis is linked to severe neuropsychiatric by ingesting T. gondii tissue cysts from meat or by oocysts present in water and soil contaminated by infected

  6. CONNECTIONMarch 2013 Inside this issue

    E-Print Network [OSTI]

    California at Davis, University of

    Bovine - Arsenic toxico- sis Equine - Serum hepatitis Equine - Contagious eq- uine metritis Porcine in horses that have not re ceived such injec ons. Taylorella equigenitalis, the cause of contagious equine

  7. A Novel Paradigm in Greenhouse Gas Mitigation

    E-Print Network [OSTI]

    Azad, Abdul-Majeed

    of valuable organic compounds, including synthetic fuels by FischerTropsch process. Thus, the technique effect, carbon dioxide, water vapor, FischerTropsch synthe- sis, iron, magnetite, maghemite, fuel cells

  8. Development of slotted orifice flow conditioner

    E-Print Network [OSTI]

    Ihfe, Larry Michael

    1994-01-01T23:59:59.000Z

    for the two flow conditioners. A baseline Co was also plotted for comparative purposes. 24 RESULTS LDA Veloci Profile and Turbulence Intensi Anal sis The velocity profile and turbulence intensity measurements obtained using the LDA are shown in figures...

  9. 2240 JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 32, NO. 12, JUNE 15, 2014 High-Speed Silicon Modulator With Slow-Wave

    E-Print Network [OSTI]

    Bergman, Keren

    -13-1-0027) and ongoing funding for OpSIS (FA9550-10-1-0439), and Portage Bay Photonics, LLC. R. Ding, Y. Liu, Y. Ma, Y

  10. Modlisation du transfert de chaleur et de masse : impact de la permabilit l'air et

    E-Print Network [OSTI]

    benchmark HAMSTAD WP2. Numerical and experimental results from hemp concrete wall submitted to real climatic numérique, béton de chanvre, hystérésis. KEYWORDS: transfer, mass, heat, numerical model, hemp concrete

  11. Funding Models for AIN-Based Local Number Portability

    E-Print Network [OSTI]

    Pittsburgh PA 15260 Douglas C. Sicker sicker@sis.pitt.edu or dsicker@fcc.gov Federal Communications Commission Washington DC September 8, 1998 Abstract Local Number Portability LNP is a de facto requirement

  12. A 145-GHz Interferometer for Measuring the Anisotropy of the Cosmic Microwave

    E-Print Network [OSTI]

    the observing campaign. Based on radiometric hot/cold-load tests, the SIS-mixer-based receivers are found. An ill-placed static shock that put an $8000 D-band frequency tripler out of commission was deemed

  13. Economic feasibility of commercial shrimp farming in Texas

    E-Print Network [OSTI]

    Williams, Robert James

    1973-01-01T23:59:59.000Z

    Anal sis with Critical Factors for Net Profit Revenue depends on: Wholesale Prices Stocking Density Survival Rate No. of Crops Annually MINUS Feed Cost depends on: Stocking Density Survival Rate Feed Conversion Ratio Cost of Feed No... Fo~at of Net Present Value Anal sis with Critical Factors for Net Gash Flow Revenue depends on: Wholesale Prices Stocking Density Survival Rate No. of Crops Annually MINUS Feed. Cost depends on: Stocking Density Survival Rate Feed...

  14. CONCEPTION OPTIMALE DES SYSTEMES INSTRUMENTS DE SECU RIT : UNE APPROCHE PAR LES BLOCS DIAGRAMMES DE FIABILIT

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    par les normes de scurit IEC 61508 et IEC 61511. L'tude propose s'inscrit dans le contexte de l conception d'un SIS, utilis dans le document ISATR84.00.022002 relatif la norme IEC 61508, qui doit les SIS, deux normes de scurit sont utilises : l'IEC 61508 (IEC61508, 1998) et l'IEC 61511 (IEC

  15. Quantification of latent travel demand on new urban facilities in the state of Texas

    E-Print Network [OSTI]

    Henk, Russell H

    1989-01-01T23:59:59.000Z

    transportation facility was opened for use. The comparison of the photographs allowed for any changes in land use to be easily recognized. 15 Preliminar Anal sis of Variables Identification of Latent Travel Oemand The first step in this analysis of latent... facilities (3). Therefore, this highway characteristic was also included as a possible latent demand indicator. Detailed Anal sis of Variables In order to examine their relationships with latent travel demand on new urban transportation facilities...

  16. Theoretical Analysis of Dilepton Spectra in Heavy Ion Collisions at GSI-FAIR Energies

    E-Print Network [OSTI]

    Diana Schumacher; Sascha Vogel; Marcus Bleicher

    2006-08-17T23:59:59.000Z

    This paper addresses the theoretical analysis of dilepton spectra in C+C collisions at GSI-SIS energies. Theoretical predictions for the recent data of the HADES collaboration at SIS-energies are made with the help of a hadron-string transport model, the Ultra-relativistic Quantum Molecular Dynamics (UrQMD) model. A mass shift of the $\\rho$ meson due to kinematical effects is discussed.

  17. Here is the list of names of people from the class of 1982 for whom we have no contact details. We are aware that sadly some of these people will no longer be alive, but we have not yet had this confirmed. We would be grateful if

    E-Print Network [OSTI]

    Li, Yi

    Van Barthold Pascale Bigley Sian Birch Gillian Ruth Blake Suzanne Janet Carne Kamjin Chan Richard Lesley Williamson Gary Michael Willrad A T Wilson June Anne Wright Parvin Yavari Karen Joy Young #12 Ancient History and Classical Civilisation Paul Gregory Ayres Kim Blake David Neil Cato Kathryn Mary Cole

  18. Direct detector for terahertz radiation

    DOE Patents [OSTI]

    Wanke, Michael C. (Albuquerque, NM); Lee, Mark (Albuquerque, NM); Shaner, Eric A. (Albuquerque, NM); Allen, S. James (Santa Barbara, CA)

    2008-09-02T23:59:59.000Z

    A direct detector for terahertz radiation comprises a grating-gated field-effect transistor with one or more quantum wells that provide a two-dimensional electron gas in the channel region. The grating gate can be a split-grating gate having at least one finger that can be individually biased. Biasing an individual finger of the split-grating gate to near pinch-off greatly increases the detector's resonant response magnitude over prior QW FET detectors while maintaining frequency selectivity. The split-grating-gated QW FET shows a tunable resonant plasmon response to FIR radiation that makes possible an electrically sweepable spectrometer-on-a-chip with no moving mechanical optical parts. Further, the narrow spectral response and signal-to-noise are adequate for use of the split-grating-gated QW FET in a passive, multispectral terahertz imaging system. The detector can be operated in a photoconductive or a photovoltaic mode. Other embodiments include uniform front and back gates to independently vary the carrier densities in the channel region, a thinned substrate to increase bolometric responsivity, and a resistive shunt to connect the fingers of the grating gate in parallel and provide a uniform gate-channel voltage along the length of the channel to increase the responsivity and improve the spectral resolution.

  19. Instrument and method for focusing x rays, gamma rays, and neutrons

    DOE Patents [OSTI]

    Smither, R.K.

    1982-03-25T23:59:59.000Z

    A crystal-diffraction instrument or diffraction-grating instrument is described with an improved crystalline structure or grating spacing structure having a face for receiving a beam of photons or neutrons and diffraction planar spacing or grating spacing along that face with the spacing increasing progressively along the face to provide a decreasing Bragg diffraction angle for a monochromatic radiation and thereby increasing the usable area and acceptance angle. The increased planar spacing for the diffraction crystal is provided by the use of a temperature differential across the line structures with different compositions, by an individual crystalline structure with a varying composition and thereby a changing planar spacing along its face, and by combinations of these techniques. The increased diffraction grating element spacing is generated during the fabrication of the diffraction grating by controlling the cutting tool that is cutting the grooves or controlling the laser beam, electron beam, or ion beam that is exposing the resist layer, etc. It is also possible to vary this variation in grating spacing by applying a thermal gradient to the diffraction grating in much the same manner as is done in the crystal-diffraction case.

  20. Determining coal permeabilities through constant pressure production interference testing

    E-Print Network [OSTI]

    Schubarth, Stephen Kurt

    1983-01-01T23:59:59.000Z

    Kurt Schubarth, B. S. , Texas A&M Un1versity Chairman of Advisory Committee: Dr. Stephen A. Holditch The determination of format1on propert1es 1s important to the success of any underground coal gasification (UCG) project. There are many ways... method of analysis for a mult1ple well test w1th a constant pressure source. The method is then verified by analyzing data generated from a numer1cal reservoir simulator. An analys1s of a hydrology test performed during the 1980 Texas ASM UCG project...