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


1

Magnetic Vortex Core Reversal by Low-Field Excitations  

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

Magnetic Vortex Core Reversal by Low-Field Excitations Print Magnetic Vortex Core Reversal by Low-Field Excitations Print In micrometer-sized magnetic thin films, the magnetization typically adopts an in-plane, circular configuration known as a magnetic vortex. At the vortex core, the magnetization turns sharply out of the plane, pointing either up or down. Magnetic data storage based on this binary phenomenon is an intriguing concept, but it would require the ability to flip the vortex cores on demand. Because these structures are highly stable, very strong magnetic fields of around half a tesla (approximately one-third the field of the strongest permanent magnet) were previously thought to be necessary to accomplish this. At the ALS, a team of researchers from Germany, Belgium, and the U.S. has used time-resolved scanning transmission x-ray microscopy (STXM) to observe vortex motion and demonstrate the feasibility of using weak magnetic fields as low as 1.5 millitesla (mT) to reverse the direction of a vortex core. The observed switching mechanism, which can be understood within the framework of micromagnetic theory, gives insights into basic magnetization dynamics and their possible application to data storage technologies.

2

Magnetic Vortex Core Reversal by Low-Field Excitations  

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

Magnetic Vortex Core Reversal by Low-Field Excitations Print Magnetic Vortex Core Reversal by Low-Field Excitations Print In micrometer-sized magnetic thin films, the magnetization typically adopts an in-plane, circular configuration known as a magnetic vortex. At the vortex core, the magnetization turns sharply out of the plane, pointing either up or down. Magnetic data storage based on this binary phenomenon is an intriguing concept, but it would require the ability to flip the vortex cores on demand. Because these structures are highly stable, very strong magnetic fields of around half a tesla (approximately one-third the field of the strongest permanent magnet) were previously thought to be necessary to accomplish this. At the ALS, a team of researchers from Germany, Belgium, and the U.S. has used time-resolved scanning transmission x-ray microscopy (STXM) to observe vortex motion and demonstrate the feasibility of using weak magnetic fields as low as 1.5 millitesla (mT) to reverse the direction of a vortex core. The observed switching mechanism, which can be understood within the framework of micromagnetic theory, gives insights into basic magnetization dynamics and their possible application to data storage technologies.

3

Magnetic Vortex Core Reversal by Low-Field Excitations  

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

Magnetic Vortex Core Reversal by Low-Field Excitations Print Magnetic Vortex Core Reversal by Low-Field Excitations Print In micrometer-sized magnetic thin films, the magnetization typically adopts an in-plane, circular configuration known as a magnetic vortex. At the vortex core, the magnetization turns sharply out of the plane, pointing either up or down. Magnetic data storage based on this binary phenomenon is an intriguing concept, but it would require the ability to flip the vortex cores on demand. Because these structures are highly stable, very strong magnetic fields of around half a tesla (approximately one-third the field of the strongest permanent magnet) were previously thought to be necessary to accomplish this. At the ALS, a team of researchers from Germany, Belgium, and the U.S. has used time-resolved scanning transmission x-ray microscopy (STXM) to observe vortex motion and demonstrate the feasibility of using weak magnetic fields as low as 1.5 millitesla (mT) to reverse the direction of a vortex core. The observed switching mechanism, which can be understood within the framework of micromagnetic theory, gives insights into basic magnetization dynamics and their possible application to data storage technologies.

4

Magnetic Vortex Core Reversal by Low-Field Excitations  

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

Magnetic Vortex Core Reversal by Magnetic Vortex Core Reversal by Low-Field Excitations Magnetic Vortex Core Reversal by Low-Field Excitations Print Wednesday, 28 March 2007 00:00 In micrometer-sized magnetic thin films, the magnetization typically adopts an in-plane, circular configuration known as a magnetic vortex. At the vortex core, the magnetization turns sharply out of the plane, pointing either up or down. Magnetic data storage based on this binary phenomenon is an intriguing concept, but it would require the ability to flip the vortex cores on demand. Because these structures are highly stable, very strong magnetic fields of around half a tesla (approximately one-third the field of the strongest permanent magnet) were previously thought to be necessary to accomplish this. At the ALS, a team of researchers from Germany, Belgium, and the U.S. has used time-resolved scanning transmission x-ray microscopy (STXM) to observe vortex motion and demonstrate the feasibility of using weak magnetic fields as low as 1.5 millitesla (mT) to reverse the direction of a vortex core. The observed switching mechanism, which can be understood within the framework of micromagnetic theory, gives insights into basic magnetization dynamics and their possible application to data storage technologies.

5

Magnetic Vortex Core Reversal by Low-Field Excitations  

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

on this binary phenomenon is an intriguing concept, but it would require the ability to flip the vortex cores on demand. Because these structures are highly stable, very strong...

6

Offset Printing, Production Services  

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

Printing Printing Our full service print shop provides prepress services, single and multicolor offset printing, and complete bindery. We print Reports Forms Brochures, leaflets and flyers Name tags and meal tickets Newsletters, etc Prepress Electronic files and paper copy prepared for printing. Complete Bindery Apply address labels or tabs to printed material. Machine fold documents and insert into envelopes for mailing. Laminate printed items up to 35" wide. Numbering and perforating. Trimming, drilling, padding and stitching. Special Printing Special reports, full color printing, continuous and carbon forms printed through the U.S. Government Printing Office. Additional Information Printing can be reached on X2953 The supervisor is Rick Backofen who can be reached on X6183

7

Printing | Department of Energy  

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

Employee Services » Printing Employee Services » Printing Printing The Printing Team is the liaison between the U.S. Government Printing Office and the Department of Energy. It consists of an expert group of printing specialists who offer a full range of services from assistance in developing your printing requirements to the final printing, distribution and mailing of products. The printed products range from black and white to full color items. These Services are available through the Working Capital Fund. The Printing Office produces a complete range of high-quality printed products comparable to those available from a full-service commercial enterprise. These include: Reports Books Pamphlets and Brochures Public Information Materials Presentation and Promotional Posters Forms and Letterhead

8

Exciting Plasmons  

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

Exciting Plasmons Exciting Plasmons Exciting Plasmons Print Wednesday, 07 December 2011 17:01 Researchers at the University of California, Berkeley and the ALS have used the far/mid-infrared FTIR of ALS Beamline 1.4 to study the plasmon excitation in graphene. They observed remarkably strong and tunable plasmon excitations in the Terahertz range, which demonstrate the exotic behaviour of 2D massless Dirac electrons and shed new light on graphene's application in THz metamaterials. Plasmons describe collective oscillations of electrons and play a fundamental role in dynamic responses of electron systems and form the basis of research into optical metamaterials. Researchers explore plasmon excitations in engineered graphene micro-ribbon arrays by detecting the transmission of polarized light with THz frequencies. They observed plasmon resonances with remarkably large oscillator strengths, as manifest in prominent room-temperature optical absorption peaks. Also, they demonstrated that graphene plasmon resonances can be tuned over a broad terahertz frequency range by changing the micro-ribbon width and in situ electrostatic doping.

9

Second Printing November 1990  

E-Print Network (OSTI)

Electronic VersionAbout WMRC's Electronic Publications: This document was originally published in a traditional format. It has been transferred to an electronic format to allow faster and broader access to important information and data. While the Center makes every effort to maintain a level of quality during the transfer from print to digital format, it is possible that minor formatting and typographical inconsistencies will still exist in this document. Additionally, due to the constraints of the electronic format chosen, page numbering will vary slightly from the original document. The original, printed version of this document may still be available. Please contact WMRC for more information: WMRC

David Thomas; Lon Carlson; Walt Mikucki; Rachel Baker; John Warren; Doug Maxelner; Eliliott Zimmermann; Claudia Washburn; David Thomas; Lon Carlson; Walt Mikucki; Rachel Baker; John Warren; Doug Maxeiner; Elliott Zimmermann; Claudia Washburn; James R. Thompson

1990-01-01T23:59:59.000Z

10

Silver Ink for Conductor Printing  

Many applications require the ability to print conductors on devices that cannot tolerate high temperatures. Current methods for making printable ...

11

Organic vapor jet printing system  

DOE Patents (OSTI)

An organic vapor jet printing system includes a pump for increasing the pressure of an organic flux.

Forrest, Stephen R

2012-10-23T23:59:59.000Z

12

Roll Printed Electronics: Development and Scaling of Gravure Printing Techniques  

E-Print Network (OSTI)

gravure printing of indium tin oxide nanoparticle patternsfor the deposition of indium tin oxide nanoparticles forwith and without Indium Zinc Oxide (IZO) conductive layers

de la Fuente Vornbrock, Alejandro

2009-01-01T23:59:59.000Z

13

Nano-contact printing of DNA monolayers  

E-Print Network (OSTI)

Technology today is directed towards building smaller devices. To accommodate this development, printing methods are needed. Some printing methods that are used include lithography, micro-contact printing, and inkjet ...

Tong, Angela, 1983-

2005-01-01T23:59:59.000Z

14

Field quality issues in iron-dominated dipoles at low fields  

Science Conference Proceedings (OSTI)

In order to help assess the usable dynamic range of iron-dominated dipoles, field shape data at low field on several Fermi-lab accelerator dipole designs are presented. Emphasis is placed on the systematic and random values of the low field sextupole since it is the first ``allowed`` field error. The Main Injector dipoles provide four times smaller sextupole and more than 20 times less sextupole hysteresis than earlier designs for the Main Ring.

Brown, B.C.

1996-10-01T23:59:59.000Z

15

Public Law 102-392 for Printing | Department of Energy  

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

2-392 for Printing Public Law 102-392 for Printing Public Law 102-392 for Printing Public Law 102-392 for Printing More Documents & Publications Minutes from the Print and Mail...

16

Add your e-prints to the E-print Network -- Energy, science,...  

Office of Scientific and Technical Information (OSTI)

Add E-prints We invite you to submit your e-prints to the network. Having your e-prints in the network increases awareness of them and promotes the dissemination of your...

17

Ultra-low field nuclear magnetic resonance and magnetic resonance imaging to discriminate and identify materials  

DOE Patents (OSTI)

An ultra-low magnetic field NMR system can non-invasively examine containers. Database matching techniques can then identify hazardous materials within the containers. Ultra-low field NMR systems are ideal for this purpose because they do not require large powerful magnets and because they can examine materials enclosed in conductive shells such as lead shells. The NMR examination technique can be combined with ultra-low field NMR imaging, where an NMR image is obtained and analyzed to identify target volumes. Spatial sensitivity encoding can also be used to identify target volumes. After the target volumes are identified the NMR measurement technique can be used to identify their contents.

Kraus, Robert H. (Los Alamos, NM); Matlashov, Andrei N. (Los Alamos, NM); Espy, Michelle A. (Los Alamos, NM); Volegov, Petr L. (Los Alamos, NM)

2010-03-30T23:59:59.000Z

18

Print the Fuel Economy Guide  

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

Print the Fuel Economy Guide Print the Fuel Economy Guide 2014 Fuel Economy Guide 2014 Fuel Economy Guide Adobe Acrobat Icon MPG data updated December 19, 2013 The annual fuel cost estimates in the 2008-2014 electronic fuel economy guides are updated weekly to match EIA's current national average prices for gasoline and diesel fuel. Order a printed copy: Order Note that the published guides may not be as up-to-date at the downloadable version. View vehicles from 1984 to the present: Go to Find-a-Car Unlike the annual guides which cover only one model year, Find-a-Car provides the most up-to-date fuel economy information for vehicles from model year 1984 to the present, along with environmental and safety data. Find a Car Developer Tools 2013 Fuel Economy Guide 2013 Fuel Economy Guide Adobe Acrobat Icon

19

Printed optics: 3D printing of embedded optical elements for interactive devices  

Science Conference Proceedings (OSTI)

We present an approach to 3D printing custom optical elements for interactive devices labelled Printed Optics. Printed Optics enable sensing, display, and illumination elements to be directly embedded in the casing or mechanical structure ... Keywords: 3d printing, additive manufacturing, display, light, optics, projection, rapid prototyping, sensing

Karl Willis; Eric Brockmeyer; Scott Hudson; Ivan Poupyrev

2012-10-01T23:59:59.000Z

20

E-Print Network 3.0 - User Login  

Office of Scientific and Technical Information (OSTI)

Home About Advanced Search Browse by Discipline Scientific Societies E-print Alerts Add E-prints E-print Network E-print Network Skip to main content FAQ * HELP * SITE MAP *...

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


21

Preprint -January 2011 To be published in Journal of Physics: Conference Series An active feedback scheme for low field NMR  

E-Print Network (OSTI)

scheme for low field NMR experiments Emmanuel Baudin1, Kajum Safiullin1, Steven W. Morgan1,2 and Pierre-Jean Nacher1 Abstract. In low field nuclear magnetic resonance (NMR) it is desirable to combine proper the sample and the detection coil is needed for NMR with highly magnetized samples and a large bandwidth

Paris-Sud XI, Université de

22

Print  

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

GFDL GCM Model Output with ARM CMBE Dataset: A First Look GFDL GCM Model Output with ARM CMBE Dataset: A First Look Jean-Christophe Golaz, UCAR VSP, GFDL Leo J. Donner and V. Ramaswamy, Geophysical Fluid Dynamics Laboratory, Princeton, NJ U . S . D E P A R T M E NT O F C O M M E R C E N A TION A L O C E A N I C A N D A T MO S P H E R I C A D M I N I S T R ATIO N What is CMBE? - CMBE (Climate Modeling Best Estimate) is a new ARM dataset specifically designed to evaluate climate models against ARM observations. - CMBE contains best estimates of selected ARM measurements: cloud fraction, surface radiation fluxes, total cloud cover, liquid water path, precipitable water vapor. - For more information on CMBE: http://science.arm.gov/wg/cpm/scm/best_estimate.html GFDL GCM models used in this comparison - AM2.1: current version of the atmospheric model (GFDL Global Atmosphere

23

Print  

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

Fungi play key roles in DOE- Fungi play key roles in DOE- relevant missions of bioenergy production, bioremediation and carbon cycling. In bioenergy proj- ects alone, for example, fungal genome data have been used not only to ensure the health of crops that serve as biomass feedstocks but also provide enzymes that can break down the biomass as well as help convert it to transportation fuel. The DOE JGI has developed a Fungal Genomics Program headed by Igor Grigoriev. The program's first project, launched October 1, is the Genome Encyclopedia of Fungi (GEF). The program aims to explore fungi's ecological diversity and breadth across the Tree of Life for DOE-relevant science and applications. DOE JGI pioneered sequenc- ing and analysis of several fungi important for lignocellu- lose degradation, enzyme pro-

24

Print  

FLC Far West is one of six regions covering the United States and is comprised of 8 western states, Alaska, Arizona, California, Hawaii, Idaho, Nevada, ...

25

Print  

Science Conference Proceedings (OSTI)

Basics of Combustion and Environmental Considerations * Typical Burners Used in Aluminum Cast Houses * Blowers/Exhausters * Dioxin and Furan Issues

26

Print  

Science Conference Proceedings (OSTI)

This presentation will cover the basics of fan design. It will give you the understanding of how to read a fan curve and where they come from. It will also cover the...

27

Print  

Science Conference Proceedings (OSTI)

He has lectured at universities and numerous 'schools' regarding neutron and synchrotron radiation. Liss supervises students, gives user support, acts on...

28

Print  

Science Conference Proceedings (OSTI)

Mining and processing are energy intensive and the usage of energy in the industry will ... He chaired the Green Processing 2002 and 2004 conferences of the...

29

Print  

Science Conference Proceedings (OSTI)

OVERVIEW. Pot emissions; Environmental regulations and permits; History of GTCs. FLUORIDE EMISSIONS. The Gaseous and Particulate Forms of Fluorides ...

30

Print  

Science Conference Proceedings (OSTI)

For example, uranium dioxide (UO2) is the primary nuclear fuel in light-water reactors. ... He graduated from Ohio Wesleyan University in 1978 (BA in Physics ...

31

Print  

Industrial Partnerships Office P.O. Box 808, L-795 Livermore, CA 94551 Phone: (925) 422-6416 Fax: (925) 423-8988 Operated by Lawrence Livermore National Security, LLC ...

32

Print  

Nondisclosure Agreement (NDA) A Nondisclosure Agreement (NDA), or confidentiality agreement, governs disclosure of non-public business information that the parties to ...

33

Print  

Science Conference Proceedings (OSTI)

... and application of LCA in mining, mineral processing, and metal production. ... of environmental impacts and external costs of production and consumption.

34

Print  

One of my most interesting projects is reviewing the office actions for ... management consulting in ... market and the economic and environmental ...

35

Print  

An LLNL developed laser has been adapted into a process called laser peening for use by industry to provide critical metal components with economical protection ...

36

Print  

About IPO. The LLNL Industrial Partnerships Office (IPO), with its staff of scientists, engineers, attorneys, and entrepreneurs, is the conduit through which the ...

37

Print  

Students. IPO has successfully collaborated with business schools and entrepreneurial centers in ongoing business plan competitions by offering LLNL technologies that ...

38

Print  

Lawrence Livermore National Laboratory (LLNL) is a national resource, with outstanding scientific and technical capabilities. LLNL has for many years been a leader ...

39

Print  

Science Conference Proceedings (OSTI)

His academic career has been in close collaboration with the aluminium industry, including Alcan Int. Banbury and LSM Rotherham United Kingdom, and led to...

40

Print  

Science Conference Proceedings (OSTI)

His engineering work in industry, government and academia has led to breakthroughs from mathematical modeling of phase transformations with fluid- structure...

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


41

Print  

Science Conference Proceedings (OSTI)

... will teach how open top ring furnace(s) should be operated to bake anodes properly and avoid these potential issues while minimizing fuel consumption.

42

Print  

Science Conference Proceedings (OSTI)

Secondly, TOC provides very clear focus for prioritizing variation reduction and the strategic use of inventory and protective capacity to manage and improve...

43

Print  

Science Conference Proceedings (OSTI)

Mark has more than 20 years in the metallurgical industry (nickel, ferro-nickel, zinc, copper, magnesium, aluminium and materials) in plant operations, project...

44

Print  

Science Conference Proceedings (OSTI)

In addition to his academic research, Reynolds has also served as a consultant to SKB (The Swedish Nuclear Fuel and Waste Management Company) for their...

45

Print  

Virtual reality display techniques developed for glasses free stereoscopic visualization can be connected to remote twin video inputs.

46

Print  

Science Conference Proceedings (OSTI)

She held a joint postdoctoral appointment in Materials Science at Queen Mary, University of London and Anatomy and Developmental Biology at University...

47

Print  

Industrial Partnerships Office P.O. Box 808, L-795 Livermore, CA 94551 Phone: (925) 422-6416 Fax: (925) 423-8988 Operated by Lawrence Livermore ...

48

Print  

Hydrogen peroxide based explosive systems have become a concern for transportation safety and security, especially because of events such as the 2005 ...

49

Print  

Operated by Lawrence Livermore National Security, LLC, for the Department of Energy's National Nuclear Security Administration

50

Print  

This will assist emergency responders and aid in protecting public health. This copolymer and solvent solution is used to bind with airborne hazardous ...

51

Printed circuit dispersive transmission line  

DOE Patents (OSTI)

A printed circuit dispersive transmission line structure is disclosed comprising an insulator, a ground plane formed on one surface of the insulator, a first transmission line formed on a second surface of the insulator, and a second transmission line also formed on the second surface of the insulator and of longer length than the first transmission line and periodically intersecting the first transmission line. In a preferred embodiment, the transmission line structure exhibits highly dispersive characteristics by designing the length of one of the transmission line between two adjacent periodic intersections to be longer than the other. 5 figures.

Ikezi, H.; Lin-Liu, Y.R.; DeGrassie, J.S.

1991-08-27T23:59:59.000Z

52

Printed circuit dispersive transmission line  

DOE Patents (OSTI)

A printed circuit dispersive transmission line structure is disclosed comprising an insulator, a ground plane formed on one surface of the insulator, a first transmission line formed on a second surface of the insulator, and a second transmission line also formed on the second surface of the insulator and of longer length than the first transmission line and periodically intersecting the first transmission line. In a preferred embodiment, the transmission line structure exhibits highly dispersive characteristics by designing the length of one of the transmission line between two adjacent periodic intersections to be longer than the other.

Ikezi, Hiroyuki (Rancho Santa Fe, CA); Lin-Liu, Yuh-Ren (San Diego, CA); DeGrassie, John S. (Encinitas, CA)

1991-01-01T23:59:59.000Z

53

Printed circuit dispersive transmission line  

DOE Patents (OSTI)

A printed circuit dispersive transmission line structure is disclosed comprising an insulator, a ground plane formed on one surface of the insulator, a first transmission line formed on a second surface of the insulator, and a second transmission line also formed on the second surface of the insulator and of longer length than the first transmission line and periodically intersecting the first transmission line. In a preferred embodiment, the transmission line structure exhibits highly dispersive characteristics by designing the length of one of the transmission lines between two adjacent periodic intersections to be longer than the other. 5 figs.

Ikezi, Hiroyuki; Lin-Liu, Yuh-Ren; deGrassie, J.S.

1990-03-02T23:59:59.000Z

54

Ultra-low field nuclear magnetic resonance and magnetic resonance imaging to discriminate and identify materials  

DOE Patents (OSTI)

Method comprising obtaining an NMR measurement from a sample wherein an ultra-low field NMR system probes the sample and produces the NMR measurement and wherein a sampling temperature, prepolarizing field, and measurement field are known; detecting the NMR measurement by means of inductive coils; analyzing the NMR measurement to obtain at least one measurement feature wherein the measurement feature comprises T1, T2, T1.rho., or the frequency dependence thereof; and, searching for the at least one measurement feature within a database comprising NMR reference data for at least one material to determine if the sample comprises a material of interest.

Matlashov, Andrei Nikolaevich; Urbaitis, Algis V.; Savukov, Igor Mykhaylovich; Espy, Michelle A.; Volegov, Petr Lvovich; Kraus, Jr., Robert Henry

2013-03-05T23:59:59.000Z

55

Printed optics: 3d printing of embedded optical elements for interactive devices  

E-Print Network (OSTI)

a b c d Figure 1: Custom optical elements are fabricated with 3D printing and embedded in interactive devices, opening up new possibilities for interaction including: unique display surfaces made from 3D printed light pipes (a), novel internal illumination techniques (b), custom optical sensors (c), and embedded optoelectronics (d). We present an approach to 3D printing custom optical elements for interactive devices labelled Printed Optics. Printed Optics enable sensing, display, and illumination elements to be directly embedded in the casing or mechanical structure of an interactive device. Using these elements, unique display surfaces, novel illumination techniques, custom optical sensors, and embedded optoelectronic components can be digitally fabricated for rapid, high fidelity, highly customized interactive devices. Printed Optics is part of our long term vision for interactive devices that are 3D printed in their entirety. In this paper we explore the possibilities for this vision afforded by fabrication of custom optical elements using todays 3D printing technology.

Karl D. D. Willis; Eric Brockmeyer; Scott E. Hudson; Ivan Poupyrev

2012-01-01T23:59:59.000Z

56

Powerful tools at E-print Network  

Office of Scientific and Technical Information (OSTI)

Energy. These subject-based e-prints reside at institutional repositories, websites and data bases, remote locations worldwide. About two million of these research documents are...

57

All the items fit to print  

Science Conference Proceedings (OSTI)

3D printing has come of age. It promises to revolutionize a wide range of industries and profoundly change the way people buy and consume.

Samuel Greengard

2013-07-01T23:59:59.000Z

58

Low-noise pulsed pre-polarization magnet system for ultra-low field NMR  

DOE Green Energy (OSTI)

A liquid cooled, pulsed electromagnet of solenoid configuration suitable for duty in an ultra-low field nuclear magnetic resonance system has been designed, fabricated and successfully operated. The magnet design minimizes Johnson noise, minimizes the hydrogen signal and incorporates minimal metal and no ferromagnetic materials. In addition, an acoustically quiet cooling system permitting 50% duty cycle operation was achieved by designing for single-phase, laminar flow, forced convection cooling. Winding, conductor splicing and epoxy impregnation techniques were successfully developed to produce a coil winding body with integral cooling passageways and adequate structural integrity. Issues of material compatibility, housing, coolant flow system and heat rejection system design will be discussed. Additionally, this pulsed electromagnet design has been extended to produce a boiling liquid cooled version in a paired solenoid configuration suitable for duty in an ultra-low field nuclear magnetic resonance system. This pair of liquid nitrogen cooled coils is currently being tested and commissioned. Issues of material compatibility, thermal insulation, thermal contraction, housing and coolant flow design are discussed.

Sims, James R [Los Alamos National Laboratory; Schilling, Josef B [Los Alamos National Laboratory; Swenson, Charles A [Los Alamos National Laboratory; Gardner, David L [Los Alamos National Laboratory; Matlashov, Andrei N [Los Alamos National Laboratory; Ammerman, Curti N [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

59

High quality offset printing: an evolutionary approach  

Science Conference Proceedings (OSTI)

Print media are still very important for everyone's daily life. Current efforts are concerned with the application of the well-established offset-printing technology to other media, particularly cardboards, which require some substantial adaptations. ... Keywords: evolutionary algorithms, image processing, industrial application

Ralf Joost; Ralf Salomon

2007-07-01T23:59:59.000Z

60

2012, 2012, VII, 127 p. Printed book  

E-Print Network (OSTI)

2012, 2012, VII, 127 p. Printed book Hardcover 99,95 | £90.00 | $129.00 *106,95 (D) | 109,95 (A) | CHF 133.50 eBook Available from libraries offering Springer's eBook Collection.com/ebooks MyCopy Printed eBook exclusively available to patrons whose library offers Springer's eBook

Geest, Harm G. van der

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


61

Silver lines electrode patterned by transfer printing  

Science Conference Proceedings (OSTI)

This paper reports a novel method for the fabrication of silver electrode with high resolution using transfer printing method. The resolution can reach to 30@mm with high electrical conductivity as we keep a large depth and micro-size particles of the ... Keywords: Transferring printing

Liangjin Ge; L. Jay Guo; Xudi Wang; Shaojun Fu

2012-09-01T23:59:59.000Z

62

E-print Network Alert Service  

Office of Scientific and Technical Information (OSTI)

E-print Web Log E-print Web Log alert image About Search Browse by Discipline Find Scientific Societies Receive E-print Alerts Contact Us Help Home Site Map OSTI DOE Welcome to E-print Alerts! This feature can be used to automatically keep abreast of the latest e-prints posted on ArXiv databases as well as a number of other science and engineering databases and Web sites, based on a search profile you submit to us. You can even receive new postings from a number of sites by submitting a single profile based on your specific area of interest. The Service is free, and you can create as many profiles as you wish. Simply register for the Service and create your search strategies for your profiles. This will be run against all selected databases and Web sites, and you will receive a weekly Alert via e-mail with the results of your automatic profile search.

63

Berkeley Lab UNIX-based Distributed Printing (DP)  

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

Berkeley Lab UNIX-based Distributed Printing (DP) Berkeley Lab UNIX-based Distributed Printing (DP) LBNL Computing Services supports a variety of printers located throughout the Laboratory through its UNIX-based Distributed Printing System. Make sure to read the UNIX distributed printing overview. See Novell printing for information on Novell-based printing here. Berkeley Lab UNIX-based Distributed Printing (DP) Information Overview Print commands Print charges Printer lists (by division, etc.) Add a new DP printer name paper sizes (a4, etc.) Fixes for common problems Deleting print jobs on Solaris Printer-specific information Groff (GNU ditroff) on Sun & SGI System Admin Information CUPS printing information CUPS FAQ LINUX test suite of files; etc. Setting default printer using lpoptions Test suite of print files

64

Ultra-low field NMR for detection and characterization of 235 UF6  

SciTech Connect

We have demonstrated the first ultra-low field (ULF) nuclear magnetic resonance measurements of uranium hexafluoride (UF{sub 6}), both depleted and 70% enriched, which is used in the uranium enrichment process. A sensitive non-invasive detection system would have an important role in non-proliferation surveillance. A two-frequency technique was employed to remove the transients induced by rapidly switching off the 50 mT pre-polarization field. A mean transverse relaxation time T{sub 2} of 24 ms was estimated for the un-enriched UF{sub 6} sample measured at a mean temperature of 80 C. Nuclear magnetic resonance at ULF has several advantages including the ability to measure through metal, such as pipes, and simple magnetic field generation hardware. We present here recent data and discuss the potential for non-proliferation monitoring of enrichment and flow velocity.

Espy, Michelle A [Los Alamos National Laboratory; Magnelind, Per E [Los Alamos National Laboratory; Matlashov, Andrei N [Los Alamos National Laboratory; Urbaitis, Algis V [Los Alamos National Laboratory; Volegov, Petr L [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

65

Direct imaging of neural currents using ultra-low field magnetic resonance techniques  

DOE Patents (OSTI)

Using resonant interactions to directly and tomographically image neural activity in the human brain using magnetic resonance imaging (MRI) techniques at ultra-low field (ULF), the present inventors have established an approach that is sensitive to magnetic field distributions local to the spin population in cortex at the Larmor frequency of the measurement field. Because the Larmor frequency can be readily manipulated (through varying B.sub.m), one can also envision using ULF-DNI to image the frequency distribution of the local fields in cortex. Such information, taken together with simultaneous acquisition of MEG and ULF-NMR signals, enables non-invasive exploration of the correlation between local fields induced by neural activity in cortex and more `distant` measures of brain activity such as MEG and EEG.

Volegov, Petr L. (Los Alamos, NM); Matlashov, Andrei N. (Los Alamos, NM); Mosher, John C. (Los Alamos, NM); Espy, Michelle A. (Los Alamos, NM); Kraus, Jr., Robert H. (Los Alamos, NM)

2009-08-11T23:59:59.000Z

66

Minutes from the May 26, 2010 Printing and Mail Teleconference  

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

26, 2010 26, 2010 Printing and Mail Managers Exchange Forum Teleconference Seventeen individuals participated in the Printing and Mail Managers Exchange Forum, which included Printing and Mail Managers and Contractors. Comments/Additions to last Months Minutes Dallas Woodruff, Headquarters opened the meeting by thanking everyone for participating in the today's teleconference. Printing Agenda Items... Update on the FY 2010, Congressional Joint Committee on Printing Commercial Printing Report "JCP Form No. 2" Dallas Woodruff, Headquarters informed the group that Headquarters received responses from all DOE printing and duplicating facilities. The report is due to the Congressional Joint Committee on Printing no later than May 31, 2010.

67

Dispenser Printed Zinc Microbattery with an Ionic Liquid Gel Electrolyte  

E-Print Network (OSTI)

Ink-jet printed carbon supercapacitor electrodes on gold,Ink-jet printed carbon supercapacitor electrodes on gold,Microcapacitors Thin film supercapacitor (TFSC) research has

Ho, Christine Chihfan

2010-01-01T23:59:59.000Z

68

Industrial Uses of Vegetable OilsChapter 9 Printing Inks  

Science Conference Proceedings (OSTI)

Industrial Uses of Vegetable Oils Chapter 9 Printing Inks Processing eChapters Processing Press Downloadable pdf of Chapter 9 Printing Inks from the book ...

69

E-print Network : Main View : Deep Federated Search  

Office of Scientific and Technical Information (OSTI)

E-print Network E-print Network Search Powered By Deep Web Technologies New Search Preferences E-print Network E-print Network Skip to main content FAQ * HELP * SITE MAP * CONTACT US Home * About * Advanced Search * Browse by Discipline * Scientific Societies * E-print Alerts * Add E-prints Powered by Deep Web Technologies E-print Network E-print Network Skip to main content FAQ * HELP * SITE MAP * CONTACT US Home * About * Advanced Search * Browse by Discipline * Scientific Societies * E-print Alerts * Add E-prints Main View This view is used for searching all possible sources. Due to the varied configuration and diversity of web pages and databases searched by E-prints, Full Record will search whatever data is searchable at each site. Multiple arXiv sites under one general heading are combined

70

Minutes from the Print and Mail Managers Exchange Forum Teleconferences |  

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

Minutes from the Print and Mail Managers Exchange Forum Minutes from the Print and Mail Managers Exchange Forum Teleconferences Minutes from the Print and Mail Managers Exchange Forum Teleconferences Minutes from the Print and Mail Managers Exchange Forum Teleconferences. Contact the Office of Administrative Management and Support at (202) 586-4318 with any questions. Last updated 04/01/13 Minutes from the March 14, 2013 Printing and Mail Teleconference Minutes from the January 10, 2013 Printing and Mail Teleconference Minutes from the November 01, 2012 Printing and Mail Teleconference Minutes from the June 28, 2012 Printing and Mail Teleconference Minutes from the May 03, 2012 Printing and Mail Teleconference Minutes from the February 23, 2012 Printing and Mail Teleconference Minutes from the October 26, 2011 Printing and Mail Teleconference

71

Widget:PrintFullVersionButton | Open Energy Information  

Open Energy Info (EERE)

PrintFullVersionButton PrintFullVersionButton Jump to: navigation, search This widget creates a button, which create a button matching the PrintPDF button style, which will direct the user to the assembled page. This template assumes the existence of the PrintPDFButton widget and template. Parameters page - The wiki address of the assembled page, or full version to be printed. cover - The name of a wiki page to use as a cover page (optional) Dependencies Template:PrintFullVersionButton Template:PrintPDFButton Widget:PrintPDFButton Usage This Widget assumes the existence of HTML elements created by the PrintFullVersionButton template, and is called via that template. {{PrintFullVersionButton}} Example {{PrintFullVersionButton}} (displays in the upper right corner of the page) Retrieved from

72

Clean Cities: Clean Cities Print Products and Templates  

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

Print Products and Print Products and Templates to someone by E-mail Share Clean Cities: Clean Cities Print Products and Templates on Facebook Tweet about Clean Cities: Clean Cities Print Products and Templates on Twitter Bookmark Clean Cities: Clean Cities Print Products and Templates on Google Bookmark Clean Cities: Clean Cities Print Products and Templates on Delicious Rank Clean Cities: Clean Cities Print Products and Templates on Digg Find More places to share Clean Cities: Clean Cities Print Products and Templates on AddThis.com... Coordinator Basics Outreach Logos, Graphics, & Photographs Print Products & Templates Exhibit Booths Presentations Videos QR Codes Tips Education & Webinars Meetings Reporting Contacts Clean Cities Print Products and Templates Clean Cities has a wide variety of print products, marketing materials, and

73

Add your e-prints to the E-print Network -- Energy, science, and technology  

Office of Scientific and Technical Information (OSTI)

Add E-prints Add E-prints We invite you to submit your e-prints to the network. Having your e-prints in the network increases awareness of them and promotes the dissemination of your information to a broader audience. We do not add all submitted e-prints to our collection, and we cannot make any predictions or guarantees about when or if they will appear. See "What are the criteria for inclusion in the E-print Network?" Please enter your full URL, including the http:// prefix. For example: http://www.osti.gov/eprints/. You may also add comments or keywords that describe the content of your page. These are used only for our information and do not affect how your page is indexed or used. Label ID URL (required): Title (required): E-mail address (required): Your Name:

74

Field Facilities Contacts for Printing and Mail  

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

Facilities Contacts for Printing and Mail Facilities Contacts for Printing and Mail Print and Mail Contacts Site Printing Contact Mail Contact NNSA, Albuquerque Deborah Miller (505) 845-6049 Thomas H. Clinkenbeard NNSA Service Center PO Box 5400 Albuquerque, NM 87185-5400 (505) 845-4602 tclinkenbeard@doeal.gov (mailto:tclinkenbeard@doeal.gov) Argonne National Laboratory Doreen Schoening Argonne National Laboratory U.S. Department of Energy 9700 South Cass Avenue Blvd 340 Lemonmt, IL 60439 (630) 840-6399 dschoening@anl.gov (mailto:dschoening@anl.gov) Bechtel Jacobs James Hughes Bechtel Jacobs - Mail Stop 7294 U.S. Department of Energy PO Box 4699 Oak Ridge, TN 37831 (865) 576-8423 Berkeley Site Office Mercedes Downing Berkeley Site Office U.S. Department of Energy 1 Cyclotron Road Bldg 90

75

E-print Network : User Account  

Office of Scientific and Technical Information (OSTI)

E-print Network Reset your password Enter either your User Name or Email Address to reset your password. User Name: Email Address: Go Some links on this page may take you to...

76

E-print Network : User Account  

Office of Scientific and Technical Information (OSTI)

New Search | My Selections (0) | | | | Alerts | E-print Network Create User Account User Name: Email Address: I want to: Always receive emails Receive emails if there are new...

77

Inkjet printed electronics using copper nanoparticle ink  

E-Print Network (OSTI)

but it had high electrical resistivity of 140 nX m, which isInstruments, USA). An electrical resistivity was calculatedlength, and q is the electrical resistivity of an printed

Kang, Jin Sung; Kim, Hak Sung; Ryu, Jongeun; Thomas Hahn, H.; Jang, Seonhee; Joung, Jae Woo

2010-01-01T23:59:59.000Z

78

Probing Asphaltene Aggregation in Native Crude Oils with Low-Field NMR  

SciTech Connect

We show that low-field proton nuclear magnetic resonance (NMR) relaxation and diffusion experiments can be used to study asphaltene aggregation directly in crude oils. Relaxation was found to be multiexponential, reflecting the composition of a complex fluid. Remarkably, the relaxation data for samples with different asphaltene concentrations can be collapsed onto each other by a simple rescaling of the time dimension with a concentration-dependent factor {zeta}, whereas the observed diffusion behavior is unaffected by asphaltene concentration. We interpret this finding in terms of a theoretical model that explains the enhanced relaxation by the transitory entanglement of solvent hydrocarbons within asphaltene clusters and their subsequent slowed motion and diffusion within the cluster. We relate the measured scaling parameters {zeta} to cluster sizes, which we find to be on the order of 2.2-4.4 nm for an effective sphere diameter. These sizes are in agreement with the typical values reported in the literature as well as with the small-angle X-ray scattering (SAXS) experiments performed on our samples.

Zielinski, Lukasz; Saha, Indrajit; Freed, Denise E.; Hrlimann, Martin D.; Liu, Yongsheng (BU-M); (Schlumberger-Doll)

2010-04-13T23:59:59.000Z

79

Modeling and optimization of stencil printing operations: A comparison study  

Science Conference Proceedings (OSTI)

This paper presents a comparison study for the optimization of stencil printing operations using hybrid intelligence technique and response surface methodology (RSM). An average 60% of soldering defects are attributed to solder paste stencil printing ... Keywords: DPMO, Fuzzy quality loss function, Genetic algorithms, Neural network, Printed circuit board, Stencil printing, Surface mount technology

Tsung-Nan Tsai

2008-04-01T23:59:59.000Z

80

Conductive inkjet printed DIY music control surface  

Science Conference Proceedings (OSTI)

We developed a novel music control sensate surface, which enables retrofit integration between any musical instruments with a versatile, customizable, and essentially cost-effective user interface. Our project presents new opportunities in customizable, ... Keywords: conductive inkjet printing, music interfaces, rapid ui prototyping

Nan-Wei Gong; Nan Zhao; Joseph A. Paradiso

2013-04-01T23:59:59.000Z

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


81

Federal Recycling Program Printed on recycled paper.  

E-Print Network (OSTI)

#12;Federal Recycling Program Printed on recycled paper. The Forest Health Technology Enterprise. This book was pub- lished by FHTET as part of the technology transfer series. http.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis

Hoddle, Mark S.

82

Print this Page Close The nuclear deal  

E-Print Network (OSTI)

that the US will adopt to the demands of Pakistan and Israel, which will also claim to be responsible nuclearPrint this Page Close The nuclear deal July 20, 2005 | 19:05 ISTT P Sreenivasan | y assuming the same responsibilities and practices as leading countries with nuclear technologies 'such as the United

83

DESIGN CONSIDERATIONS FOR LOW FIELD SHORT PHOTO-INJECTED RF ELECTRON GUN WITH HIGH CHARGE ELECTRON BUNCH.  

Science Conference Proceedings (OSTI)

The RF field and space charge effect in a low field RF gun is given. The cell lengths are modified to have maximum accelerating efficiency. The modification introduces an extra RF field slice emittance. The phase space evolution of the following emittance compensation system is presented taking into account the chromatic effect. The emittance compensation mechanics for RF field and chromatic effect induced emittance is similar to that of compensating the space charge induced emittance. But the requirements are different to have best compensation for them. The beam waist is far in front of linac entrance to have best compensation for the RF field and chromatic effect induced emittance. For low field RF gun with high charge electron bunch this compensation is more important.

CHANG,X.; BEN-ZVI,I.; KEWISCH,J.

2004-06-21T23:59:59.000Z

84

E-print Network: Research Communications for Scientists and Engineers  

Office of Scientific and Technical Information (OSTI)

E-print Web Log E-print Web Log E-print Network E-print Network About Search Browse by Discipline Find Scientific Societies Receive E-print Alerts Contact Us Help Home Site Map OSTI DOE For Immediate Release January 10, 2005 For more information, contact: Alison Buckholtz, SPARC, alison@arl.org Susan Tackett, OSTI, tacketts@osti.gov DOE/OSTI's E-PRINT NETWORK SELECTED AS SPARC PARTNER Provides Research Communications and Full-Text Searching of Science Websites and Databases Washington, DC -SPARC (the Scholarly Publishing and Academic Resources Coalition) today announced that the E-print Network, a free service of the U.S. Department of Energy (DOE) Office of Scientific and Technical Information (OSTI), has been chosen as a SPARC Scientific Communities partner. The selection recognizes the contribution of the E-print Network to expanded availability and use of open-access scientific and technical research on the Internet.

85

Profile Optimization for Wet-Printed Polymer Films  

E-Print Network (OSTI)

of a spin-coated film. In the next chapter, a dry printing method will be introduced, which has superior

86

Piezoelectric Drop-on-Demand Inkjet Printing of Rat Fibroblast Cells: Survivability Study and Pattern Printing  

E-Print Network (OSTI)

A novel piezoelectric, drop-on-demand (DOD) inkjet system has been developed and used to print L929 rat fibroblast cells. We investigate the survivability of the cells subjected to the large stresses during the printing process. These stresses are varied by changing the diameter of the orifice (36 to 119 microns) through which the cells are dispensed, as well as changing the electrical pulse used to drive the piezoelectric element. It is shown that for the smallest 36 microns diameter orifice, cell survival rates fall from 95% to approximately 76% when the ejection velocity is increased from 2 to 16 m/s. This decrease in survival rates is less significant when the larger orifice diameters of 81 microns and 119 microns are used. Analysis shows that there is a clear inverse relationship between cell survival rates and the mean shear rates during drop formation. By using the same printing set-up, fibroblast cells are printed onto alginate and collagen into patterns. Printed cells are cultured over a period of days to verify their long-term viability. Fibroblasts printed onto the collagen are found to successfully adhere, spread and proliferate, subsequently forming a denser patterns after 5 days in culture. Cell agglomeration is found to affect the printing performance, especially for the printhead with the smallest orifice, leading to frequent clogging of the nozzle. We also study the number of cells in each droplet, when printed under optimal conditions. The probability density of this number follows a binomial distribution, which consistent with a uniform distribution of cells in the medium and within the printhead.

Er Qiang Li; Eng Khoon Tan; Sigurdur Tryggvi Thoroddsen

2013-10-02T23:59:59.000Z

87

E-print Network : User Login  

Office of Scientific and Technical Information (OSTI)

New Search | New Search | My Selections (0) | | | | Alerts | E-print Network Login The E-print Network ALERTS feature will automatically update you regarding newly available information in your specific area(s) of interest. Simply register for the service, then create a search strategy which will be run against information added to . Select a schedule (weekly, monthly, etc.) for receiving the email Alerts. If you are a new patron, Register to learn how to set up Alerts to meet your needs. If you are an existing patron, enter your user name and password in the boxes to login. Once logged in, you may review or modify your search, add a new search and see recent Alerts results. User Name: Password: Remember Me Remember me on this computer. Login Don't have a user name? Register!

88

Department of Energy Strategic Plan, May 2011, Print Quality | Department  

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

Department of Energy Strategic Plan, May 2011, Print Quality Department of Energy Strategic Plan, May 2011, Print Quality Department of Energy Strategic Plan, May 2011, Print Quality Posted here are publication materials related to the Department of Energy's Strategic Plan of 2011. DOE_2011-Strategic-Plan_High-Resolution_Print-Quality is a full-data, high-resolution version of the document. This will print/reproduce with the maximum resolution available from your output device (printer). This is a 15.7 Mb file. DOE_2011-Strategic-Plan_Medium-Resolution_Print-Quality is a medium-resolution version of the document. The images have been slightly downsampled and compressed so the file can be easier transmitted. This will print/reproduce at medium resolution on your output device (printer). This is a 3.6 Mb file.

89

Piezoelectric Drop-on-Demand Inkjet Printing of Rat Fibroblast Cells: Survivability Study and Pattern Printing  

E-Print Network (OSTI)

A novel piezoelectric, drop-on-demand (DOD) inkjet system has been developed and used to print L929 rat fibroblast cells. We investigate the survivability of the cells subjected to the large stresses during the printing process. These stresses are varied by changing the diameter of the orifice (36 to 119 microns) through which the cells are dispensed, as well as changing the electrical pulse used to drive the piezoelectric element. It is shown that for the smallest 36 microns diameter orifice, cell survival rates fall from 95% to approximately 76% when the ejection velocity is increased from 2 to 16 m/s. This decrease in survival rates is less significant when the larger orifice diameters of 81 microns and 119 microns are used. Analysis shows that there is a clear inverse relationship between cell survival rates and the mean shear rates during drop formation. By using the same printing set-up, fibroblast cells are printed onto alginate and collagen into patterns. Printed cells are cultured over a period of da...

Li, Er Qiang; Thoroddsen, Sigurdur Tryggvi

2013-01-01T23:59:59.000Z

90

RESONANT CAVITY EXCITATION SYSTEM  

DOE Patents (OSTI)

A cavity excitation circuit is described for rapidly building up and maintaining high-level oscillations in a resonant cavity. The circuit overcomes oscillation buildup slowing effects such as ion locking in the cavity by providing for the selective application of an amplified accelerating drive signal to the main cavity exciting oscillator during oscillation buildup and a direct drive signal to the oscillator thereafter.

Baker, W.R.

1959-08-01T23:59:59.000Z

91

Minutes from the November 17, 2010 Printing and Mail Teleconference  

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

November 17, 2010 November 17, 2010 Printing and Mail Managers Exchange Forum Teleconference Twenty seven individuals participated in the Printing and Mail Managers Exchange Forum, which included Printing and Mail Managers and Contractors Comments/Additions to last Months Minutes No comments. Printing Agenda Items......... Update on the Department-wide "Three-Year Plan" Dallas Woodruff, Headquarters opened the meeting by thanking everyone for providing their sites Three-Year Plan data to Headquarters in timely manner. Mr. Woodruff went on to say a number of individuals indentified a problem with the narrative section of the PPAFI Spreadsheets (unable to print the narratives). Mr. Woodruff notified the programmer of the narrative section printing glitch.

92

Minutes from the March 17, 2010 Printing and Mail Teleconference  

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

March 17, 2010 March 17, 2010 Printing and Mail Managers Exchange Forum Teleconference Twenty-eight individuals participated in the Printing and Mail Managers Exchange Forum, which included Printing and Mail Managers and Contractors. Comments/Additions to last Months Minutes Dallas Woodruff, Headquarters opened the meeting by thanking everyone for participating in the today's teleconference. Printing Agenda Items... Upcoming Congressional Joint Committee on Printing Commercial Printing Report "JCP Form No. 2" Dallas Woodruff, Headquarters informed the group that sites should receive the call letter for the report on or around March 30, 2010. The report is due back to Headquarters by May 3, 2009. Mr. Woodruff reminded the group that they must report negative responses as well.

93

Minutes from the January 20, 2010 Printing and Mail Teleconference  

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

, 2010 , 2010 Printing and Mail Managers Exchange Forum Teleconference Twenty-one individuals participated in the Printing and Mail Managers Exchange Forum, which included Printing and Mail Managers and Contractors. Comments/Additions to last Months Minutes Dallas Woodruff, Headquarters opened the meeting by thanking everyone for participating in the today's teleconference. Printing Agenda Items... Update on the Department-wide Printing and Publishing Activities Report Three-Year Plan. Dallas Woodruff, Headquarters thanked the group for their contributions made to the Department-wide printing program during FY 2009. Mr Woodruff also thanked the group for providing data for the FY 2009 Three-Year Plan in a timely manner. The Three-Year Plan is in track for completion before the February

94

Power Electronics in the Printing and Publishing Industry  

Science Conference Proceedings (OSTI)

This report provides utility marketing and account executives and engineering staff with basic information about the use of power electronics systems and technologies in the printing and publishing industry. The report first describes the printing and publication industry. Then it outlines how power electronics may provide equipment designers with the power electronics topologies required to design and manufacturer future equipment used in the printing and publishing industry.

1999-12-16T23:59:59.000Z

95

Optical systems fabricated by printing-based assembly - Energy ...  

Provided are optical devices and systems fabricated, at least in part, via printing-based assembly and integration of device components. In specific embodiments the ...

96

DOE fundamentals handbook: Engineering symbology, prints, and drawings  

Science Conference Proceedings (OSTI)

The Engineering Symbology, Prints, and Drawings Handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and technical staff with the necessary fundamentals training to ensure a basic understanding of engineering prints, their use, and their function. The handbook includes information on engineering fluid drawings and prints; piping and instrument drawings; major symbols and conventions; electronic diagrams and schematics; logic circuits and diagrams; and fabrication, construction, and architectural drawings. This information will provide personnel with a foundation for reading, interpreting, and using the engineering prints and drawings that are associated with various DOE nuclear facility operations and maintenance.

Not Available

1993-01-01T23:59:59.000Z

97

DOE fundamentals handbook: Engineering symbology, prints, and drawings. Volume 1  

Science Conference Proceedings (OSTI)

The Engineering Symbology, Prints, and Drawings Handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and technical staff with the necessary fundamentals training to ensure a basic understanding of engineering prints, their use, and their function. The handbook includes information on engineering fluid drawings and prints; piping and instrument drawings; major symbols and conventions; electronic diagrams and schematics; logic circuits and diagrams; and fabrication, construction, and architectural drawings. This information will provide personnel with a foundation for reading, interpreting, and using the engineering prints and drawings that are associated with various DOE nuclear facility operations and maintenance.

Not Available

1993-01-01T23:59:59.000Z

98

DOE fundamentals handbook: Engineering symbology, prints, and drawings. Volume 2  

SciTech Connect

The Engineering Symbology, Prints, and Drawings Handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and technical staff with the necessary fundamentals training to ensure a basic understanding of engineering prints, their use, and their function. The handbook includes information on engineering fluid drawings and prints; piping and instrument drawings; major symbols and conventions; electronic diagrams and schematics; logic circuits and diagrams; and fabrication, construction, and architectural drawings. This information will provide personnel with a foundation for reading, interpreting, and using the engineering prints and drawings that are associated with various DOE nuclear facility operations and maintenance.

Not Available

1993-01-01T23:59:59.000Z

99

PRINT, WEB, AND e-NEWS ADVERTISING INSERTION ORDER  

Science Conference Proceedings (OSTI)

PRINT, WEB, AND e-NEWS. ADVERTISING INSERTION ORDER. FAX. Fax this form to: TMS Advertising Sales. Fax: (724) 814-3141. MAIL. Mail this form to:.

100

Dispenser Printed Zinc Microbattery with an Ionic Liquid Gel Electrolyte  

E-Print Network (OSTI)

the electrodes determine a batterys capacity and power. Inthe printed batterys discharge capacity increased more thanrates, the battery will exhibit reduced capacities due to

Ho, Christine Chihfan

2010-01-01T23:59:59.000Z

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


101

Aerosol Jet Material Deposition for High Resolution Printed ...  

Science Conference Proceedings (OSTI)

Abstract Scope, Aerosol Jet printing, is finding wide use in a number of ... The Aerosol Jet systems deposit a wide variety of functional materials onto a wide...

102

Physics form at arxiv.org e-Print archive  

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

Full text Help pages Go Automated e-print archives Computer Science Mathematics Physics Quantitative Biology Quantitative Finance Statistics Search Form Interface Catchup...

103

Internet Printing Protocol/1.1: Model and Semantics  

Science Conference Proceedings (OSTI)

This document is one of a set of documents, which together describe all aspects of a new Internet Printing Protocol (IPP). IPP is an application level protocol that can be used for distributed printing using Internet tools and technologies. This document ...

R. Herriot; R. deBry; S. Isaacson; P. Powell / T. Hastings

2000-09-01T23:59:59.000Z

104

Printed Circuit Board Maintenance, Repair, and Testing Guide  

Science Conference Proceedings (OSTI)

Printed circuit boards (PCBs) are an assembly of electronic and electro-mechanical components, such as relays and switches. The printed circuit (PC) board assembly provides multiple functions based on its application and intended service. It is an integral part of many instruments and/or instrumentation systems.

2003-10-30T23:59:59.000Z

105

Browse by Discipline -- E-print Network Subject Pathways: Plasma...  

Office of Scientific and Technical Information (OSTI)

E-print Network E-print Network Skip to main content Plasma Physics and Fusion Go to Research Groups Preprints Provided by Individual Scientists: A B C D E F G H I J K L M N O P Q...

106

Clean Cities: Clean Cities Print Products and Templates  

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

Print Products and Templates Print Products and Templates Clean Cities has a wide variety of print products, marketing materials, and templates to support your coalition's education and outreach activities. See also logos, graphics, and photos. IdleBox The IdleBox toolkit contains outreach materials and templates to help with your idle-reduction projects. Print Publications Available print materials include the biannual newsletter-Clean Cities Now-and a variety of fact sheets and brochures about the Clean Cities initiative and the technologies in its portfolio. Browse Clean Cities-branded publications Find alternative fuels and advanced vehicle documents on the Alternative Fuels Data Center The Clean Cities Technical Response Service can also help you find the publications you need.

107

Minutes from the March 14, 2013 Printing and Mail Teleconference  

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

March 14, 2013 March 14, 2013 Mail discussion Al Majors is on leave today. Ellsworth Howell Jr. and Tony Nellums are sitting for Al. There are no agenda items for the Mail portion. A discussion period for questions, comments, or suggestions was opened without response Printing discussion Discussed suggestions for reducing printing expenses Presidential Executive Order 13589 and reducing hard copy printing in favor of electronic publishing Sec. 5. Printing. Agencies are encouraged to limit the publication and printing of hard copy documents and to presume that information should be provided in an electronic form, whenever practicable, permitted by law, and consistent with applicable records retention requirements. Agencies should consider using acquisition vehicles developed by the

108

Minutes from the September 15, 2010 Printing and Mail Teleconference  

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

September 15, 2010 Printing and Mail Managers Exchange Forum Teleconference September 15, 2010 Printing and Mail Managers Exchange Forum Teleconference Twenty-four individuals participated in the Printing and Mail Managers Exchange Forum, which included Printing and Mail Managers and Contractors. Comments/Additions to last Months Minutes Dallas Woodruff, Headquarters opened the meeting by thanking everyone for participating in the today's teleconference. Printing Agenda Items... Upcoming FY 2010 Department-wide Three-Year Plan Dallas Woodruff, Headquarters informed the group that the programmer has been making modifications to the spreadsheets such as the narrative section, equipment installed year, sites data consolidation etc. The enhancement to the narrative section will allow sites to enter data into the four narrative sections, which allow

109

Minutes from the January 19, 2011 Printing and Mail Teleconference  

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

January 2010 January 2010 Printing and Mail Managers Exchange Forum Teleconference Twenty-one individuals participated in the Printing and Mail Managers Exchange Forum, which included Printing and Mail Managers and Contractors Comments/Additions to last Months Minutes No comments. Printing Agenda Items......... Update on the Department-wide FY-2010 Three-Year Plan Dallas Woodruff, Headquarters in formed the group that the Department-wide Printing and Publishing Activities is currently in the concurrence process. The report is due to congress by February 11, 2011. Mr. Woodruff thanks those that assisted in development of the report and he asked for recommendations on how to make the data submission more users friendly. Mr Woodruff also asked members to share any concern or problems they experienced regarding to using the Excel

110

Pennsylvania Company Develops Solar Cell Printing Technology | Department  

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

Pennsylvania Company Develops Solar Cell Printing Technology Pennsylvania Company Develops Solar Cell Printing Technology Pennsylvania Company Develops Solar Cell Printing Technology April 15, 2010 - 4:20pm Addthis Joshua DeLung What does this project do? The technology uses Plextronics' conductive inks that can be printed by manufacturers worldwide to make solar cells, potentially as easily as they might print a newspaper. This method is much less expensive than many others in terms of raw materials and manufacturing costs. Pittsburgh-based Plextronics, plans to commercialize low-cost solar power globally with its conductive ink technologies, a goal that has been helped by a government incubator program focused on finding marketable prototypes by 2012. "For any technology to be truly successful, you have to enable a new

111

Multi-Layer Inkjet Printed Contacts to Si  

DOE Green Energy (OSTI)

Ag, Cu, and Ni metallizations were inkjet printed with near vacuum deposition quality. The approach developed can be easily extended to other conductors such as Pt, Pd, Au, etc. Thick highly conducting lines of Ag and Cu demonstrating good adhesion to glass, Si, and printed circuit board (PCB) have been printed at 100-200 deg C in air and N2 respectively. Ag grids were inkjet-printed on Si solar cells and fired through the silicon nitride AR layer at 850 deg C, resulting in 8% cells. Next generation inks, including an ink that etches silicon nitride, have now been developed. Multi-layer inkjet printing of the etching ink followed by Ag ink produced contacts under milder conditions and gave solar cells with efficiencies as high as 12%.

Curtis, C. J.; van Hest, M.; Miedaner, A.; Kaydanova, T.; Smith, L.; Ginley, D. S.

2005-11-01T23:59:59.000Z

112

E-print Network : Your Selections  

Office of Scientific and Technical Information (OSTI)

Your Selections Back To Previous Page Selections - of First Page Previous Page Next Page Last Page Back To Previous Page You have 0 selections. Click the checkboxes clipping.addClipping on the results or alert results pages to add to your selections. Some links on this page may take you to non-federal websites. Their policies may differ from this site. U.S. Department of Energy U.S. Department of Energy Office of Science Office of Scientific and Technical Information Website Policies/Important Links Science Accelerator science.gov WorldWideScience.org Deep Web Technologies Email Results Use this form to email your search results * Email this to: * Your Name: Comments: URL only?: Number of results: 10 20 50 100 200 All Email Format: HTML TEXT * Required field Print Results

113

Frequently Asked Questions (FAQ) for the E-print Network -- Energy,  

Office of Scientific and Technical Information (OSTI)

Frequently Asked Questions Frequently Asked Questions Table of Contents General Information What are e-prints? Are e-prints and preprints the same thing? What is the E-print Network: Research Communications for Scientists and Engineers? Who uses the E-print Network? How does the E-print Network help the user? How the E-print Network Works What's in the E-print Network? What are the criteria for inclusion in the E-print Network? How does the E-print Network function? What is E-print Network's search architecture? An overview of tools and services A note to site owners General Information Q: What are e-prints? A: E-prints are scholarly and professional works electronically produced and shared by researchers with the intent of communicating research findings to colleagues. They may include preprints, reprints,

114

Minutes from the February 23, 2012 Printing and Mail Teleconference  

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

Printing and Mail Managers Exchange Forum Teleconference February 23, 2012 Participants: Headquarters (5) National Energy Technology Laboratory, PA National Security Complex Y-12 (2) Oak Ridge National Laboratory Y-12 Site Office (2) Hanford Site Office Oak Ridge Association University Oak Ridge Operations Office BWXT Pantex Site Office JanTec Corporation, Richland, Washington Los Alamos National Laboratory Chicago Office Bettis Atomic Power Laboratory National Security Technology C1, Las Vegas SLAC National Accelerator Laboratory Comments/Additions to minutes from last meeting. There were no comments. Printing Agenda Items......... Update on the Department-wide Printing and Publishing Activities Three-Year Plan (2013-2015).

115

Ink Jet Printing Approaches to Solar Cell Contacts  

DOE Green Energy (OSTI)

We are developing inkjet printing as a low cost, high through-put approach to the deposition of front contacts for Si solar cells. High deposition rates of 1m per printing pass were achieved with a new metalorganic ink composed of silver (trifluoroacetate) in ethylene glycol. The printing conditions were optimized to achieve a relatively high line resolution of 120 m. The optimal parameters for the piezoelectric inkjet were a pulse frequency of 50 Hz and pulse amplitude of 25 V. The best resolution and the line quality were achieved at a substrate temperature of 180 C and drop separation of 40 m.

Kaydanova, T.; Miedaner, A.; Curtis, C.; Perkins, J.; Alleman, J.; Ginley, D.

2003-05-01T23:59:59.000Z

116

Character Segmentation in Highly Blurred Ancient Printed Documents  

Science Conference Proceedings (OSTI)

Character segmentation, which is a fundamental preliminary step for character recognition, is particularly critic in the case of ancient printed documents, where several degradation processes may cause the characters to touch and merge one another. In ...

Anna Tonazzini; Luigi Bedini

1999-09-01T23:59:59.000Z

117

Browse by Discipline -- E-print Network Subject Pathways: Fission...  

Office of Scientific and Technical Information (OSTI)

Fission and Nuclear Technologies A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z Go to Research Collections E-prints Provided...

118

Dai Nippon Printing Co Ltd | Open Energy Information  

Open Energy Info (EERE)

Dai Nippon Printing Co Ltd Dai Nippon Printing Co Ltd Jump to: navigation, search Name Dai Nippon Printing Co Ltd Place Shinjuku-ku, Tokyo, Japan Zip 162-8001 Sector Solar Product Print conglomerate which is involved with manufacturing components for fuel cells and solar sectors. Coordinates 35.7015°, 139.709244° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.7015,"lon":139.709244,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

119

Web-Based Integration of Printed and Digital Information  

Science Conference Proceedings (OSTI)

The affordances of paper have ensured its retention as a key information medium, in spite of dramatic increases in the use of digital technologies for information storage, processing and delivery. Recent developments in paper, printing and wand technologies ...

Moira C. Norrie; Beat Signer

2003-01-01T23:59:59.000Z

120

Metallizations by Direct-Write Inkjet Printing: Preprint  

DOE Green Energy (OSTI)

Presented at the 2001 NCPV Program Review Meeting: Direct-write technologies offer the potential for low-cost, materials-efficient deposition of contact metallizations for PV. Direct-write technologies offer the potential for low-cost materials-efficient deposition of contact metallizations for photovoltaics. We report on the inkjet printing of metal organic decomposition (MOD) inks with and without nanoparticle additions. Near-bulk conductivity of printed and sprayed metal films has been achieved for Ag and Ag nanocomposites. Good adhesion and ohmic contacts with a measured contact resistance of 400 {mu}{Omega} {center_dot} cm{sup 2} have been observed between the sprayed silver films and a heavily doped n-type layer of Si. Inkjet printed films show adhesion differences as a function of the process temperature and solvent. Silver lines with good adhesion and conductivity have been printed on glass with 100 {micro}m resolution.

Curtis, C. J.; Rivkin, T.; Miedaner, A.; Alleman, J.; Perkins, J.; Smith, L.; Ginley, D.

2001-10-01T23:59:59.000Z

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


121

Browse by Discipline -- E-print Network Subject Pathways: Mathematics...  

Office of Scientific and Technical Information (OSTI)

Energy Storage, Conversion and Utilization A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z Go to Research Collections E-prints...

122

Tungsten carbide-cobalt by Three Dimensional Printing  

E-Print Network (OSTI)

Three Dimensional Printing is an additive manufacturing process for rapid prototyping ceramic and metallic parts [Sachs, et al, 1990]. Green (not sintered) tungsten carbide-cobalt parts must have a density greater than 50% ...

Kelley, Andrew, III

1998-01-01T23:59:59.000Z

123

Direct printing of lead zirconate titanate thin films  

E-Print Network (OSTI)

Thus far, use of lead zirconate titanate (PZT) in MEMS has been limited due to the lack of process compatibility with existing MEMS manufacturing techniques. Direct printing of thin films eliminates the need for photolithographic ...

Bathurst, Stephen, 1980-

2008-01-01T23:59:59.000Z

124

Browse by Discipline -- E-print Network Subject Pathways: Renewable...  

Office of Scientific and Technical Information (OSTI)

Fission and Nuclear Technologies A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z Go to Research Collections E-prints Provided...

125

Browse by Discipline -- E-print Network Subject Pathways: Plasma...  

Office of Scientific and Technical Information (OSTI)

Plasma Physics and Fusion A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z Go to Research Collections E-prints Provided by...

126

Search for Gluonic Excitations  

SciTech Connect

Studies of meson spectra via strong decays provide insight regarding QCD at the confinement scale. These studies have led to phenomenological models for QCD such as the constituent quark model. However, QCD allows for a much richer spectrum of meson states which include extra states such as exotics, hybrids, multi-quarks, and glueballs. First discussion of the status of exotic meson searches is given followed by a discussion of plans at Jefferson Lab to double the energy of the machine to 12 GeV, which will allow us to access photoproduction of mesons in search for gluonic excited states.

Paul Eugenio

2007-10-01T23:59:59.000Z

127

Search for Gluonic Excitations  

SciTech Connect

Studies of meson spectra via strong decays provide insight regarding QCD at the confinement scale. These studies have led to phenomenological models for QCD such as the constituent quark model. However, QCD allows for a much richer spectrum of meson states which include extra states such as exotics, hybrids, multi-quarks, and glueballs. First discussion of the status of exotic meson searches is given followed by a discussion of plans at Jefferson Lab to double the energy of the machine to 12 GeV, which will allow us to access photoproduction of mesons in search for gluonic excited states.

Eugenio, Paul [Florida State University, Department of Physics, Tallahassee, Florida 32306 (United States)

2007-10-26T23:59:59.000Z

128

SHOCK-EXCITED OSCILLATOR  

DOE Patents (OSTI)

S> A shock-excited quartz crystal oscillator is described. The circuit was specifically designed for application in micro-time measuring work to provide an oscillator which immediately goes into oscillation upon receipt of a trigger pulse and abruptly ceases oscillation when a second pulse is received. To achieve the instant action, the crystal has a prestressing voltage applied across it. A monostable multivibrator receives the on and off trigger pulses and discharges a pulse through the crystal to initiate or terminate oscillation instantly.

Creveling, R.

1957-12-17T23:59:59.000Z

129

Transport of ions in a segmented linear Paul trap in printed-circuit-board technology  

E-Print Network (OSTI)

We describe the construction and operation of a segmented linear Paul trap, fabricated in printed-circuit-board technology with an electrode segment width of 500 microns. We prove the applicability of this technology to reliable ion trapping and report the observation of Doppler cooled ion crystals of Ca-40 with this kind of traps. Measured trap frequencies agree with numerical simulations at the level of a few percent from which we infer a high fabrication accuracy of the segmented trap. To demonstrate its usefulness and versatility for trapped ion experiments we study the fast transport of a single ion. Our experimental results show a success rate of 99.0(1)% for a transport distance of 2x2mm in a round-trip time of T=20us, which corresponds to 4 axial oscillations only. We theoretically and experimentally investigate the excitation of oscillations caused by fast ion transports with error-function voltage ramps: For a slightly slower transport (a round-trip shuttle within T=30us) we observe non-adiabatic motional excitation of 0.89(15)meV.

G. Huber; T. Deuschle; W. Schnitzler; R. Reichle; K. Singer; F. Schmidt-Kaler

2007-11-19T23:59:59.000Z

130

3D printing rises to the occasion | ornl.gov  

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

Features Features 2014 2013 2012 2011 2010 News Home | ORNL | News | Features | 2013 SHARE 3D printing rises to the occasion ORNL group shows how it's done, one layer at a time A perforated metal box produced by an Arcam 3D printer. This detailed A perforated metal box produced by an Arcam 3D printer. This detailed "calibration" part illustrates some of the versatility of 3D printing. Photo: Jason Richards (hi-res image) Things have come a long way since the mid-1980s when 3D Systems cofounder Chuck Hull worked out the technology to print objects in three dimensions, one very thin layer at a time. Hull called his new technology "stereolithography." In it, a guided beam of ultraviolet light is focused on a vat of liquid polymer, solidifying areas where it hits. When one layer is complete, the

131

Optical systems fabricated by printing-based assembly  

DOE Patents (OSTI)

Provided are optical devices and systems fabricated, at least in part, via printing-based assembly and integration of device components. In specific embodiments the present invention provides light emitting systems, light collecting systems, light sensing systems and photovoltaic systems comprising printable semiconductor elements, including large area, high performance macroelectronic devices. Optical systems of the present invention comprise semiconductor elements assembled, organized and/or integrated with other device components via printing techniques that exhibit performance characteristics and functionality comparable to single crystalline semiconductor based devices fabricated using conventional high temperature processing methods. Optical systems of the present invention have device geometries and configurations, such as form factors, component densities, and component positions, accessed by printing that provide a range of useful device functionalities. Optical systems of the present invention include devices and device arrays exhibiting a range of useful physical and mechanical properties including flexibility, shapeability, conformability and stretchablity.

Rogers, John (Champaign, IL); Nuzzo, Ralph (Champaign, IL); Meitl, Matthew (Durham, NC); Menard, Etienne (Durham, NC); Baca, Alfred J. (Urbana, IL); Motala, Michael (Champaign, IL); Ahn, Jong-Hyun (Suwon, KR); Park, Sang-II (Savoy, IL); Yu; Chang-Jae (Urbana, IL); Ko, Heung-Cho (Gwangju, KR); Stoykovich; Mark (Dover, NH); Yoon, Jongseung (Urbana, IL)

2011-07-05T23:59:59.000Z

132

Fission fragment excited laser system  

DOE Patents (OSTI)

A laser system and method for exciting lasing action in a molecular gas lasing medium which includes cooling the lasing medium to a temperature below about 150 K and injecting fission fragments through the lasing medium so as to preferentially excite low lying vibrational levels of the medium and to cause population inversions therein. The cooled gas lasing medium should have a mass areal density of about 5 .times. 10.sup.-.sup.3 grams/square centimeter, relaxation times of greater than 50 microseconds, and a broad range of excitable vibrational levels which are excitable by molecular collisions.

McArthur, David A. (Albuquerque, NM); Tollefsrud, Philip B. (Albuquerque, NM)

1976-01-01T23:59:59.000Z

133

Toward integrated PV panels and power electronics using printing technologies  

SciTech Connect

In this paper, we review the latest developments in the area of printing technologies with an emphasis on the fabrication of control-embedded photovoltaics (PV) with on-board active and passive devices. We also review the use of power converters and maximum power point tracking (MPPT) circuits with PV panels. Our focus is on the investigation of the simplest implementations of such circuits in view of their integration with solar cells using printing technologies. We see this concept as potentially enabling toward further cost reduction. Besides a discussion as to feasibility, we shall also present some projections and guidelines toward possible integration. (author)

Ababei, Cristinel; Yuvarajan, Subbaraya [Electrical and Computer Engineering Department, North Dakota State University, Fargo, ND 58108 (United States); Schulz, Douglas L. [Center for Nanoscale Science and Engineering, North Dakota State University, Fargo, ND 58102 (United States)

2010-07-15T23:59:59.000Z

134

Leaching Studies for Metals Recovery from Waste Printed Wiring ...  

Science Conference Proceedings (OSTI)

Presentation Title, Leaching Studies for Metals Recovery from Waste Printed Wiring ... of the Chemical Changes and Surface Properties of Carbonated Waste Cement ... Flux for Basic Oxygen Steel Making Using Waste Oxides of Steel Plant ... Heat Treatment of Black Dross for the Production of a Value Added Material - A

135

Print-and-Peel Fabrication for Microfluidics: Whats in it for Biomedical Applications?  

E-Print Network (OSTI)

Solid-object printers have the capability for 3D printing,single-step 3D molding without a solid-object printer. 33,763D) printing of masters using a solid-object printer.

Thomas, Marlon S.; Millare, Brent; Clift, Joseph M.; Bao, Duoduo; Hong, Connie; Vullev, Valentine I.

2010-01-01T23:59:59.000Z

136

Evaporative printing of organic materials and metals and development of organic memories  

E-Print Network (OSTI)

The advantages of directed printing make it the ideal fabrication tool for the ubiquitous electronic technologies of the future. However, direct printing techniques such as ink-jet technology, are currently limited to ...

Kang, Sung Hoon, 1974-

2004-01-01T23:59:59.000Z

137

ENG-Canada-USA Government Procurement (clean 11 Feb 2010 printed...  

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

ENG-Canada-USA Government Procurement (clean 11 Feb 2010 printed) ENG-Canada-USA Government Procurement (clean 11 Feb 2010 printed) ENG-Canada-USA Government Procurement (clean 11...

138

SUBJECT: Effective Date: Policy Number: Printing Services 4-18-07 3-302  

E-Print Network (OSTI)

for quotation and execution. DEFINITIONS: Printing services: the process of printing ink or toner on paper for any black and white and full color printing of letterhead, envelopes, brochures, newsletters, memo-come, first-served basis. Exceptions can be made for priority requests, but a rush charge may be added

Glebov, Leon

139

Industrial applications of photonuclear resonance excitation  

E-Print Network (OSTI)

Photonuclear resonance excitation refers to a variety of photonuclear interaction processes that lead to the excitation of a nucleus from some initial state to a higher energy nuclear state. Typical excited nuclear state ...

Chichester, David Lee, 1971-

2000-01-01T23:59:59.000Z

140

Multi-Layer Inkjet Printed Contacts for Si Solar Cells (Poster)  

DOE Green Energy (OSTI)

The objective of this report is to develop inkjet printing (including tools, inks, and processing conditions) for high-quality Ag contacts for Si solar cells. The conclusions are: (1) Tools and inks for the atmospheric inkjet printing of Ag metallization for Si solar cells have been developed. (2) Line widths, conductivities and thicknesses comparable to, or better than, those produced by screen printing. (3) A new fire-through ink and layered printing were found to decrease the processing temperature for contact formation to as low as 650 C and improve printed cell performance.

Curtis, C. J.; van hest, M. F. A. M.; Miedaner, A.; Kaydanova, T.; Smith, L.; Ginley, D. S.

2006-05-01T23:59:59.000Z

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


141

Transcript: OSTI's E-print Network Now Boasts Close to 1 Million Documents,  

Office of Scientific and Technical Information (OSTI)

Transcript: OSTI's E-print Network Now Boasts Close to 1 Million Documents, Transcript: OSTI's E-print Network Now Boasts Close to 1 Million Documents, Office of Scientific and Technical Information, U.S. Department of Energy, www.osti.gov March 2007 E-Print Network Listen Now Where can you find full-text access to approximately 1 million scientific e-print documents? Where can you gain entry to more than 22,000 scientific Web sites organized by discipline, and link to more than 2,900 relevant scientific societies? Visit the E-print Network. The E-print Network is rapidly approaching 1 million documents. The scientific and technical information for this vast, integrated communications hub was created by scientists and research engineers active in their respective fields. E-print Network is intended for use by other scientists, engineers, and students at advanced levels.

142

Biomedical Digital Libraries BioMed Central Commentary The excitement of Google Scholar, the worry of Google Print  

E-Print Network (OSTI)

2005 Banks; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License

Marcus A Banks; Marcus A Banks

2005-01-01T23:59:59.000Z

143

Excitation optimization for damage detection  

SciTech Connect

A technique is developed to answer the important question: 'Given limited system response measurements and ever-present physical limits on the level of excitation, what excitation should be provided to a system to make damage most detectable?' Specifically, a method is presented for optimizing excitations that maximize the sensitivity of output measurements to perturbations in damage-related parameters estimated with an extended Kalman filter. This optimization is carried out in a computationally efficient manner using adjoint-based optimization and causes the innovations term in the extended Kalman filter to be larger in the presence of estimation errors, which leads to a better estimate of the damage-related parameters in question. The technique is demonstrated numerically on a nonlinear 2 DOF system, where a significant improvement in the damage-related parameter estimation is observed.

Bement, Matthew T [Los Alamos National Laboratory; Bewley, Thomas R [UCSD

2009-01-01T23:59:59.000Z

144

Recycling of WEEE: Characterization of spent printed circuit boards from mobile phones and computers  

SciTech Connect

Highlights: > This paper presents new and important data on characterization of wastes of electric and electronic equipments. > Copper concentration is increasing in mobile phones and remaining constant in personal computers. > Printed circuit boards from mobile phones and computers would not be mixed prior treatment. - Abstract: This paper presents a comparison between printed circuit boards from computers and mobile phones. Since printed circuits boards are becoming more complex and smaller, the amount of materials is constantly changing. The main objective of this work was to characterize spent printed circuit boards from computers and mobile phones applying mineral processing technique to separate the metal, ceramic, and polymer fractions. The processing was performed by comminution in a hammer mill, followed by particle size analysis, and by magnetic and electrostatic separation. Aqua regia leaching, loss-on-ignition and chemical analysis (inductively coupled plasma atomic emission spectroscopy - ICP-OES) were carried out to determine the composition of printed circuit boards and the metal rich fraction. The composition of the studied mobile phones printed circuit boards (PCB-MP) was 63 wt.% metals; 24 wt.% ceramics and 13 wt.% polymers; and of the printed circuit boards from studied personal computers (PCB-PC) was 45 wt.% metals; 27 wt.% polymers and ceramics 28 wt.% ceramics. The chemical analysis showed that copper concentration in printed circuit boards from personal computers was 20 wt.% and in printed circuit boards from mobile phones was 34.5 wt.%. According to the characteristics of each type of printed circuit board, the recovery of precious metals may be the main goal of the recycling process of printed circuit boards from personal computers and the recovery of copper should be the main goal of the recycling process of printed circuit boards from mobile phones. Hence, these printed circuit boards would not be mixed prior treatment. The results of this paper show that copper concentration is increasing in mobile phones and remaining constant in personal computers.

Yamane, Luciana Harue, E-mail: lucianayamane@uol.com.br [Department of Metallurgical and Materials Engineering, University of Sao Paulo, Av. Prof. Mello Moraes, 2463 Sao Paulo, SP 05508-030 (Brazil); Tavares de Moraes, Viviane, E-mail: tavares.vivi@gmail.com [Department of Metallurgical and Materials Engineering, University of Sao Paulo, Av. Prof. Mello Moraes, 2463 Sao Paulo, SP 05508-030 (Brazil); Crocce Romano Espinosa, Denise, E-mail: espinosa@usp.br [Department of Metallurgical and Materials Engineering, University of Sao Paulo, Av. Prof. Mello Moraes, 2463 Sao Paulo, SP 05508-030 (Brazil); Soares Tenorio, Jorge Alberto, E-mail: jtenorio@usp.br [Department of Metallurgical and Materials Engineering, University of Sao Paulo, Av. Prof. Mello Moraes, 2463 Sao Paulo, SP 05508-030 (Brazil)

2011-12-15T23:59:59.000Z

145

Low field magnetic resonance imaging  

DOE Patents (OSTI)

A method and system of magnetic resonance imaging does not need a large homogenous field to truncate a gradient field. Spatial information is encoded into the spin magnetization by allowing the magnetization to evolve in a non-truncated gradient field and inducing a set of 180 degree rotations prior to signal acquisition.

Pines, Alexander (Berkeley, CA); Sakellariou, Dimitrios (Billancourt, FR); Meriles, Carlos A. (Fort Lee, NJ); Trabesinger, Andreas H. (London, GB)

2010-07-13T23:59:59.000Z

146

Non-Contact Printed Aluminum Metallization of Si Photovoltaic Devices: Preprint  

DOE Green Energy (OSTI)

Alternative solution-based techniques such as aerosol jet printing offer the dual benefits of contactless pattern deposition and high material utilization. We have used aerosol jet printing to investigate non-contact printed Al metal ink as a replacement for screen printed Al back contacts on wafer Si solar cells. This particle-based ink can be prepared at high loadings of 60 weight % metal, which enables rapid deposition of 1 - 10 um thick lines. Al lines printed on Si wafers and heated between 550 and 800 degrees C form low resistance contacts suitable for current extraction. The effectiveness of these printed Al back contacts has further been demonstrated by incorporating them into a series of 21 cm2 crystalline Si solar cells that produced a champion power conversion efficiency of 13%.

Platt, H. A. S.; van Hest, M. F. A. M.; Li, Y.; Novak, J. P.

2012-06-01T23:59:59.000Z

147

V-148: Novell iPrint Client Unspecified Buffer Overflow Vulnerability |  

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

8: Novell iPrint Client Unspecified Buffer Overflow 8: Novell iPrint Client Unspecified Buffer Overflow Vulnerability V-148: Novell iPrint Client Unspecified Buffer Overflow Vulnerability May 3, 2013 - 6:00am Addthis PROBLEM: Novell iPrint Client Unspecified Buffer Overflow Vulnerability PLATFORM: Novell iPrint Client 5.x ABSTRACT: A vulnerability has been reported in Novell iPrint Client, which can be exploited by malicious people to compromise a user's system REFERENCE LINKS: Secunia Advisory SA53261 Novell KB 7012344 Novell KB 7008708 CVE-2013-1091 IMPACT ASSESSMENT: High DISCUSSION: The vulnerability is caused due to an unspecified error and can be exploited to cause a stack-based buffer overflow. IMPACT: Successful exploitation may allow execution of arbitrary code SOLUTION: Vendor recommendation is to update to Version 5.90

148

Laser Excitation and Detection of  

E-Print Network (OSTI)

-Level Systems B. Optical Two-Level Systems C. Multilevel Systems D. Ground State Magnetization (Spin 1/2) EPulabon ditTerenCe between ground and electroniCally excited states, the #12;population difference between differerw and coherence between the magnetic substates can chang

Suter, Dieter

149

Get scientific E-prints | OSTI, US Dept of Energy, Office of...  

Office of Scientific and Technical Information (OSTI)

Energy Science and Technology Software Center E-print Network Information Bridge LEDP National Library of Energy OSTIblog Science.gov Science Accelerator Science Conference...

150

Exploring the emerging design territory of construction 3D printing project led architectural research.  

E-Print Network (OSTI)

??3D printing techniques (also known as additive fabrication) are maturing and increasingly being used as an alternative means for niche product manufacturing. These fabrication techniques (more)

Gardiner, J

2011-01-01T23:59:59.000Z

151

E-print Network Web Log News: Research Communications for Scientists...  

Office of Scientific and Technical Information (OSTI)

Description This Web Log provides the latest information about changes to E-print Network - its content, features, and functionality - as well as news or information of interest...

152

Procedures for preparation, printing, and distribution of UMTRA Project National Environmental Policy Act documents  

SciTech Connect

This paper discusses the procedures for preparation, printing and distribution of Uranium Mill Tailings Remedial Action (UMTRA) Project National Environmental Policy Act documents. (KJD)

Not Available

1988-08-01T23:59:59.000Z

153

Core Excitation in 98Cd  

Science Conference Proceedings (OSTI)

Using a {sup 58}Ni({sup 46}Ti, {alpha}2n) reaction, a total of 24 different residual nuclei were identified. Among them were {sup 98}Cd and {sup 97}Ag. The level scheme of {sup 98}Cd was extended to J{sup {pi}}=(15{sup +}). An isomeric state at 6634 keV excitation energy was confirmed. This state decays by a 4207 keV transition feeding the known 8{sup +} state. The level scheme of {sup 97}Ag was also extended to J{sup {pi}}=(33/2{sup +}) and the half-lives of two isomeric states were measured. Experimental energies of the excited states were compared with the results of ab initio shell-model calculations based on a realistic two-nucleon interaction. The Gammasphere Ge array, coupled with the Microball and the Neutron Shell ancillary particle detectors, was used at the 88 inch cyclotron at Lawrence Berkeley National Laboratory, USA.

Vencelj, Matjaz [ORNL; Baktash, Cyrus [ORNL; Fallon, Paul [ORNL; Hausladen, Paul [ORNL; Likar, A. [Oak Ridge National Laboratory (ORNL); Lipoglavsek, Matej [ORNL; Yu, Chang-Hong [ORNL

2006-07-01T23:59:59.000Z

154

Wedding ring shaped excitation coil  

DOE Patents (OSTI)

A high frequency inductively coupled electrodeless lamp includes an excitation coil with an effective electrical length which is less than one half wavelength of a driving frequency applied thereto, preferably much less. The driving frequency may be greater than 100 MHz and is preferably as high as 915 MHz. Preferably, the excitation coil is configured as a non-helical, semi-cylindrical conductive surface having less than one turn, in the general shape of a wedding ring. At high frequencies, the current in the coil forms two loops which are spaced apart and parallel to each other. Configured appropriately, the coil approximates a Helmholtz configuration. The lamp preferably utilizes an bulb encased in a reflective ceramic cup with a pre-formed aperture defined therethrough. The ceramic cup may include structural features to aid in alignment and/or a flanged face to aid in thermal management. The lamp head is preferably an integrated lamp head comprising a metal matrix composite surrounding an insulating ceramic with the excitation integrally formed on the ceramic. A novel solid-state oscillator preferably provides RF power to the lamp. The oscillator is a single active element device capable of providing over 70 watts of power at over 70% efficiency.

MacLennan, Donald A. (Gaithersburg, MD); Tsai, Peter (Olney, MD)

2001-01-01T23:59:59.000Z

155

Photoionization of excited molecular states  

DOE Green Energy (OSTI)

Rapid advances in laser and detector technologies are making it possible to investigate molecular photophysics and photochemistry in powerful new ways. For example, resonantly enhanced multiphoton ionization (REMPI) measurements, in which the total (or the mass selected) ion current is monitored as a function of laser wavelength, have yielded extensive and often novel information on the spectroscopy of the resonant intermediate states. With the addition of photoelectron spectrometry (PES) to analyze the kinetic energy of the ejected electrons, it is possible to determine the branching ratios into different electronic, vibrational, and rotational levels of the product ion and to focus directly on both the dynamics of the multiphoton ionization process and the photoionization of excited state species. In the present paper, we report several REMPI/PES studies of H/sub 2/ and N/sub 2/. The results reflect both the spectroscopy and the dynamics of photoionization of excited molecular states and are discussed in terms of the selection rules for photoionization and the relative probabilities of photoionization from Rydberg and valence states. In some cases, in accordance with the Franck-Condon principle, the results demonstrate that resonant multiphoton ionization through Rydberg states may be a powerful technique for the production of electronic, vibrational, and rotational state selected ions. However, in other cases, systematic departures from Franck-Condon behavior are observed, which reflect the more subtle dynamics of excited state photoionization.

Dehmer, P.M.; Dehmer, J.L.; Pratt, S.T.

1984-01-01T23:59:59.000Z

156

Transfer printing of patterned metal films using parylene C coated surfaces  

Science Conference Proceedings (OSTI)

Successful transfer printing of aluminum (Al), copper (Cu), silver (Ag), nickel (Ni) and gold (Au) films is demonstrated. Previously, Al, Cu, Ag, and Ni films have exhibited relatively strong adhesion to silicon (Si) substrates resulting in poor transfer ... Keywords: Flexible electronics, Surface treatments, Transfer printing

J. Bavier; J. Cumings; D. R. Hines

2013-04-01T23:59:59.000Z

157

Bayesian network model of overall print quality: Construction and structural optimisation  

Science Conference Proceedings (OSTI)

Prediction of overall visual quality based on instrumental measurements is a challenging task. Despite the several proposed models and methods, there exists a gap between the instrumental measurements of print and human visual assessment of natural images. ... Keywords: Bayesian networks, Overall visual quality, Print quality assessment, Structural optimisation

Tuomas Eerola; Lasse Lensu; Joni-Kristian Kamarainen; Tuomas Leisti; Risto Ritala; Gte Nyman; Heikki Klviinen

2011-08-01T23:59:59.000Z

158

The Open-Access Journal for the Basic Principles of Diffusion Theory, Experiment and Application Application of Low Field and Solid-State NMR Spectroscopy to Study the Liquid/Liquid Interface in Porous Space of Clay Minerals and Shales  

E-Print Network (OSTI)

In petroleum research understanding displacement, redistribution, and adsorption of oil and water plays an important role. To study complex multi-component systems such as liquid/liquid/mineral interactions in the porous space of clays and shales we applied low field (2 15 MHz) and high resolution (300 MHz) NMR spectroscopy. The detailed NMR analysis shows that the results from low field NMR measurements are in good correlation with the solid-state data. Consequently the process of liquid/liquid displacement can be characterised by considering the relaxation times, signal amplitudes and chemical shifts together.

Artem Borysenko; Ben Clennell; Iko Burgar; David Dewhurst; Rossen Sedev; John Ralston

2008-01-01T23:59:59.000Z

159

E-print Network Help -- Energy, science, and technology for the research  

Office of Scientific and Technical Information (OSTI)

Help Help Basic Search ♦ Advanced Search ♦ Search Results ♦ Selecting and Exporting Results ♦ Source Status Spelling Suggestion ♦ Search Tips ♦ Content and Search Power ♦ Sharing a Page ♦ Disciplines ♦ Scientific Societies Database Collection Descriptions From the E-print Network, users can Search e-prints on multiple websites and databases, browse e-prints by Disciplines, browse a list of Scientific Societies, and receive Alerts for new e-prints added to the E-print Network. See Alerts Help for Information on the Alerts Service Basic Search Try our Basic Search basic search Just type in your key word(s), like "global warming", and select Search . You'll get results ranked by relevance. The higher the number of stars, stars the more relevant the document is to your query.

160

E-print Network Alerts -- Energy, science, and technology for the research  

Office of Scientific and Technical Information (OSTI)

E-print Alerts E-print Alerts Login User Name: Enter User Name Password: Forgot username or password? Login The E-print Alerts feature is a service that will automatically notify you when new e-print information is available in your specific areas of interest. Simply register for the service and then create a search strategy, which will be matched automatically against each new weekly update. Patrons will receive the results of the alert via e-mail. If you are a NEW PATRON, learn how to set up E-print Alerts to meet your needs. If you are an existing patron, enter your user name and password in the box on the right, then press the login button. You may review or modify your search, add a new search, and see search results. Some links on this page may take you to non-federal websites. Their

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


161

Printing Tiny Batteries | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Stories of Discovery & Innovation: "Printing" Stories of Discovery & Innovation: "Printing" Tiny Batteries? Energy Frontier Research Centers (EFRCs) EFRCs Home Centers Research Science Highlights News & Events EFRC News Observing the Sparks of Life EFRC Events DOE Announcements Publications Contact BES Home 06.26.13 Stories of Discovery & Innovation: "Printing" Tiny Batteries? Print Text Size: A A A Subscribe FeedbackShare Page Researchers use sophisticated 3D printing techniques to create batteries the size of a grain of sand. This work, featured in the Office of Science's Stories of Discovery & Innovation, was supported in part by the Light-Materials Interactions for Energy Conversion (LMI), an EFRC led by Harry Atwater at the California Institute of Technology. Last modified: 6/26/2013 8:53:17

162

Multi-Layer Inkjet Printed Contacts for Silicon Solar Cells: Preprint  

DOE Green Energy (OSTI)

Ag, Cu, and Ni metallizations were inkjet printed with near vacuum deposition quality. The approach developed can be easily extended to other conductors such as Pt, Pd, Au, etc. Thick highly conducting lines of Ag and Cu demonstrating good adhesion to glass, Si, and printed circuit board (PCB) have been printed at 100-200 C in air and N2 respectively. Ag grids were inkjet-printed on Si solar cells and fired through the silicon nitride AR layer at 850 C, resulting in 8% cells. Next generation inks, including an ink that etches silicon nitride, have now been developed. Multi-layer inkjet printing of the etching ink followed by Ag ink produced contacts under milder conditions and gave solar cells with efficiencies as high as 12%.

Curtis, C. J.; van hest, M.; Miedaner, A.; Kaydanova, T.; Smith, L.; Ginley, D. S.

2006-05-01T23:59:59.000Z

163

I United States Government Printing Office SUPERINTENDENT OF WCUMENTS  

Office of Legacy Management (LM)

onSree;sional atecord onSree;sional atecord I United States Government Printing Office SUPERINTENDENT OF WCUMENTS Wash~ngtm. D.C 20402 OFFEIAL BUSINESS Penalty for prwate use. 9300 Congressmnal Record (USPS 087-390) United States of America . :- PROCEEDINGS AND DEBATES OF THE 98' hCONGRESS, FIRST SESSION 0 * U.S -C3 Postage and Fees Pad U S Governme3n7t5Prmt~ng Office SECOND CLASS NEWSPAPER H-4578 ' CQNGRESSIONAL RECORD - HOUSE June 28, 1983 I H.J. Res. 273: Mr. BOLAND, Mr. WAXMAN, Mr. Oeeasrrk. Mr. BEDELL. Mr. BONER of Tennessee, Mr. OWENS, Mr. DAUB. Mr. CONTE. Mr. RA~ALL. Mr. GRAY, Mr. VANDER JAGT. Mr. TRAXLER. and Mr. VENTO. H. Con. Res. 107: Mr. KASICH. Mr. AuCO~N, Mr. CARPER, and Mr. BCHWER. H. Con. Res. 118: Mr. FISH. Mr. &INTO& Mr. KILDEE. Mr. SOLARZ, Mr. BRITT. Mr.

164

Printed Circuit Board Metal Powder Filters for Low Electron Temperatures  

E-Print Network (OSTI)

We report the characterisation of printed circuit boards (PCB) metal powder filters and their influence on the effective electron temperature which is as low as 22 mK for a quantum dot in a silicon MOSFET structure in a dilution refrigerator. We investigate the attenuation behaviour (10 MHz- 20 GHz) of filter made of four metal powders with a grain size below 50 um. The room-temperature attenuation of a stainless steel powder filter is more than 80 dB at frequencies above 1.5 GHz. In all metal powder filters the attenuation increases with temperature. Compared to classical powder filters, the design presented here is much less laborious to fabricate and specifically the copper powder PCB-filters deliver an equal or even better performance than their classical counterparts.

Filipp Mueller; Raymond N. Schouten; Matthias Brauns; Tian Gang; Wee Han Lim; Nai Shyan Lai; Andrew S. Dzurak; Wilfred G. van der Wiel; Floris A. Zwanenburg

2013-04-11T23:59:59.000Z

165

Design and development of high precision elastomeric-stamp wrapping system for roll-to-roll multi-layer microcontact printing  

E-Print Network (OSTI)

Microcontact printing is an emerging printing technique that could potentially find application in the electronics industry. High-speed roll-to-roll equipment was built at Nano Terra, Inc in 2008, for microcontact printing. ...

Datar, Charudatta Achyut

2009-01-01T23:59:59.000Z

166

Characterization of DuPont 9015, aqueous processable dry film photoresist for printed wiring boards. Topical report  

SciTech Connect

This report describes the evaluation of DuPont`s Riston 9015, fully aqueous processable dry film photoresist as a mask for gold plating, tin/lead plating, and print and etch patterning for printed circuit board products.

Goldammer, S.

1995-04-01T23:59:59.000Z

167

New Modes of Nuclear Excitations  

E-Print Network (OSTI)

We present a theoretical approach based on density functional theory supplemented by a microscopic multi-phonon model which is applied for investigations of pygmy resonances and other excitations of different multipolarities in stable and exotic nuclei. The possible relation of low-energy modes to the properties of neutron or proton skins is systematically studied in isotonic and isotopic chains. The fine structure of nuclear electric and magnetic response functions is analyzed and compared to experimental data. Their relevance to nuclear astrophysics is discussed.

Nadia Tsoneva; Horst Lenske

2013-09-30T23:59:59.000Z

168

Apparatus And Method Of Using Flexible Printed Circuit Board In Optical Transceiver Device  

DOE Patents (OSTI)

This invention relates to a flexible printed circuit board that is used in connection with an optical transmitter, receiver or transceiver module. In one embodiment, the flexible printed circuit board has flexible metal layers in between flexible insulating layers, and the circuit board comprises: (1) a main body region orientated in a first direction having at least one electrical or optoelectronic device; (2) a plurality of electrical contact pads integrated into the main body region, where the electrical contact pads function to connect the flexible printed circuit board to an external environment; (3) a buckle region extending from one end of the main body region; and (4) a head region extending from one end of the buckle region, and where the head region is orientated so that it is at an angle relative to the direction of the main body region. The electrical contact pads may be ball grid arrays, solder balls or land-grid arrays, and they function to connect the circuit board to an external environment. A driver or amplifier chip may be adapted to the head region of the flexible printed circuit board. In another embodiment, a heat spreader passes along a surface of the head region of the flexible printed circuit board, and a window is formed in the head region of the flexible printed circuit board. Optoelectronic devices are adapted to the head spreader in such a manner that they are accessible through the window in the flexible printed circuit board.

Anderson, Gene R. (Albuquerque, NM); Armendariz, Marcelino G. (Albuquerque, NM); Bryan, Robert P. (Albuquerque, NM); Carson, Richard F. (Albuquerque, NM); Duckett, III, Edwin B. (Albuquerque, NM); McCormick, Frederick B. (Albuquerque, NM); Peterson, David W. (Sandia Park, NM); Peterson, Gary D. (Albuquerque, NM); Reysen, Bill H. (Lafayette, CO)

2005-03-15T23:59:59.000Z

169

Organ printing: computer-aided jet-based 3D tissue engineering, Trends in Biotechnology 21  

E-Print Network (OSTI)

Tissue engineering technology promises to solve the organ transplantation crisis. However, assembly of vascularized 3D soft organs remains a big challenge. Organ printing, which we define as computer-aided, jet-based 3D tissue-engineering of living human organs, offers a possible solution. Organ printing involves three sequential steps: pre-processing or development of blueprints for organs; processing or actual organ printing; and postprocessing or organ conditioning and accelerated organ maturation. A cell printer that can print gels, single cells and cell aggregates has been developed. Layer-by-layer sequentially placed and solidified thin layers of a thermo-reversible gel could serve as printing paper. Combination of an engineering approach with the developmental biology concept of embryonic tissue fluidity enables the creation of a new rapid prototyping 3D organ printing technology, which will dramatically accelerate and optimize tissue and organ assembly. 'Give us the tools and we will finish the job'-Winston Churchill Although the terms tissue engineering and organ printing were introduced only recently (1987 and 1999 respectively), the study of cell coalescence and tissue assembly has a much longer history and is deeply rooted in developmental biology [1]. The classic work

Vladimir Mironov; Thomas Bol; Thomas Trusk; Gabor Forgacs; Roger; R. Markwald

2003-01-01T23:59:59.000Z

170

Main Generator Excitation System Upgrade/Retrofit  

Science Conference Proceedings (OSTI)

Upgrading or replacing even a portion of the excitation system of a generator can provide increased reliability and availability while simultaneously decreasing operational and maintenance costs. However, the upgrade or retrofit of an excitation system is a major cost involving some degree of implementation, installation, or performance risk. This report provides lessons learned, experiences, practices and solutions from plants that have installed excitation system retrofits and upgrades. This informatio...

2005-11-07T23:59:59.000Z

171

OSTI's E-print Network continues rapid growth | OSTI, US Dept of Energy,  

Office of Scientific and Technical Information (OSTI)

NEWS MEDIA CONTACT: NEWS MEDIA CONTACT: Cathey Daniels, (865) 576-9539 FOR IMMEDIATE RELEASE January 17, 2006 OSTI's E-print Network continues rapid growth Created by scientists for scientists, expanded 39 percent in past year Oak Ridge, TN - The E-print Network (www.osti.gov/eprints), a communications hub created by scientists for scientists worldwide, currently provides full-text searching of more than 730,000 e-print documents from scientific Web sites - an increase of 39 percent since January 2005. More than 100,000 documents were added to the network in the past three months. In addition, this rapidly expanding network provides one-stop browse/search access to more than 19,650 scientific Web sites containing e-prints, as well as deep Web searching across 52 major databases containing close to 20

172

OSTI's E-print Network continues rapid growth | OSTI, US Dept of Energy,  

Office of Scientific and Technical Information (OSTI)

Office of Scientific & Technical Information Office of Scientific & Technical Information NEWS MEDIA CONTACT: Cathey Daniels, (865) 576-9539 FOR IMMEDIATE RELEASE January 17, 2006 OSTI's E-print Network continues rapid growth Created by scientists for scientists, expanded 39 percent in past year Oak Ridge, TN - The E-print Network (www.osti.gov/eprints), a communications hub created by scientists for scientists worldwide, currently provides full-text searching of more than 730,000 e-print documents from scientific Web sites - an increase of 39 percent since January 2005. More than 100,000 documents were added to the network in the past three months. In addition, this rapidly expanding network provides one-stop browse/search access to more than 19,650 scientific Web sites containing e-prints, as well as deep Web searching across 52 major databases containing close to 20

173

Printing Highly-aligned Single-crystalline Organic Electronic Thin Films |  

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

Printing Highly-aligned Single-crystalline Organic Electronic Thin Films Printing Highly-aligned Single-crystalline Organic Electronic Thin Films Monday, September 23, 2013 Organic semiconductor materials have some intriguing advantages compared to their inorganic counterparts: low-cost and versatile manufacturing (e.g. roll-to-roll printing), material abundance and new form factors (e.g. flexible, transparent and stretchable). However, solution-processed organic devices are usually made and optimized with poorly scalable fabrication using lab-based techniques such as spin coating or dip coating. A better route for organic-electronics fabrication is printing, which can potentially realize large-area, high-throughput, low-cost fabrication on an industrial scale. Fluence image FLUENCE: fluid-enhanced crystal engineering. Solution shearing (a) using a

174

Bimetallic bars with local control of composition by three-dimensional printing  

E-Print Network (OSTI)

Three Dimensional Printing (3DP) is a process that enables the fabrication of geometrically complex parts directly from computer-aided design (CAD) models. The success of 3DP as an alternative manufacturing technology to ...

Techapiesancharoenkij, Ratchatee, 1979-

2004-01-01T23:59:59.000Z

175

Nuclear Maintenance Applications Center: Assessment of Printed Circuit Board Diagnostic Techniques  

Science Conference Proceedings (OSTI)

This project evaluated the techniques, theoretical methods, and recommendations made in previous EPRI reports on printed circuit boards (PCBs). The goal was to find techniques to help manage PCB life.

2009-03-31T23:59:59.000Z

176

Development of tissue printed nitrocellulose cards/arrays for real time PCR amplification and detection  

E-Print Network (OSTI)

Tissue print technology allows for the transfer of cellular material from tissue onto a nitrocellulose film for immunocytochemical assays. The MIT BioInstrumentation Laboratory is currently developing a novel cancer marker ...

Chia, Helena Nien-Hwa, 1982-

2004-01-01T23:59:59.000Z

177

Elastomeric contact printing for sub-micron patterning of organic films  

E-Print Network (OSTI)

In this thesis, a novel diffusion-based contact-printing technology is investigated, by which a wide variety of low molecular weight organic materials can be patterned without added temperature, pressure, or chemical ...

Ramanan, Sulinya

2012-01-01T23:59:59.000Z

178

Deposition of colloidal quantum dots by microcontact printing for LED display technology  

E-Print Network (OSTI)

This thesis demonstrates a new deposition method of colloidal quantum dots within a quantum dot organic light-emitting diode (QD-LED). A monolayer of quantum dots is microcontact printed as small as 20 ,Lm lines as well ...

Kim, LeeAnn

2006-01-01T23:59:59.000Z

179

Prints and copies Black/white XEROX PRINTERS Paper type white  

E-Print Network (OSTI)

Prints and copies Black/white XEROX PRINTERS A4 A3 Paper type white 80 gram one-sided 0,04 0 glossy 0,15 coloured paper 80 gram 0,03 0,05 white or coloured paper 120 gram 0,05 sheet (only XEROX,09 two-sided 0,06 0,15 Prints and copies Fullcolour XEROX PRINTERS 7556 - 7655 - 7335 A4 A3 Paper type

Franssen, Michael

180

Reliability of chip on glass module fabricated with direct printing method  

Science Conference Proceedings (OSTI)

To investigate the effect of the sintering temperature on the electrical properties of a chip on glass (COG) module, a screen-printed conductive circuit was sintered at various temperatures, viz. 150, 200, 250 and 300^oC for 30min. An anisotropic conductive ... Keywords: Ag nanopaste, Anisotropic conductive film (ACF), Chip on glass (COG), Reliability, Screen-printing, Temperature-humidity test (THT)

Young-Chul Lee, Jong-Woong Kim, Yongil Kim, Seung-Boo Jung

2013-07-01T23:59:59.000Z

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


181

Accelerated Publication: Ag nanoparticle-based inkjet printed planar transmission lines for RF and microwave applications: Considerations on ink composition, nanoparticle size distribution and sintering time  

Science Conference Proceedings (OSTI)

Sintering of Ag nanoparticle (NP)-based inkjet printed tracks is a crucial process for the next-generation digitally printed electronics. In particular, while the digital printing, as additive technology, is now well settled for what concerns either ... Keywords: Inkjet printing, Microwave planar transmission lines, Real-time measurements, Silver nanoparticles

A. Chiolerio; M. Cotto; P. Pandolfi; P. Martino; V. Camarchia; M. Pirola; G. Ghione

2012-09-01T23:59:59.000Z

182

Printing out Particle Detectors with 3D-Printers, a Potentially Transformational Advance for HEP Instrumentation  

E-Print Network (OSTI)

This white paper suggests posing a "grand challenge" to the HEP instrumentation community, i.e. the aggressive development of additive manufacturing, also known as 3D-printing, for the production of particle detectors in collaboration with industry. This notion is an outcome of discussions within the instrumentation frontier group during the 2013 APS-DPF Snowmass summer study conducted by the U.S. HEP community. Improvements of current industrial 3D-printing capabilities by one to two orders of magnitude in terms of printing resolution, speed, and object size together with developing the ability to print composite materials could enable the production of any desired 3D detector structure directly from a digital model. Current industrial 3D-printing capabilities are briefly reviewed and contrasted with capabilities desired for printing detectors for particle physics, with micro-pattern gaseous detectors used as a first example. A significant impact on industrial technology could be expected if HEP were to part...

Hohlmann, M

2013-01-01T23:59:59.000Z

183

Printing out Particle Detectors with 3D-Printers, a Potentially Transformational Advance for HEP Instrumentation  

E-Print Network (OSTI)

This white paper suggests posing a "grand challenge" to the HEP instrumentation community, i.e. the aggressive development of additive manufacturing, also known as 3D-printing, for the production of particle detectors in collaboration with industry. This notion is an outcome of discussions within the instrumentation frontier group during the 2013 APS-DPF Snowmass summer study conducted by the U.S. HEP community. Improvements of current industrial 3D-printing capabilities by one to two orders of magnitude in terms of printing resolution, speed, and object size together with developing the ability to print composite materials could enable the production of any desired 3D detector structure directly from a digital model. Current industrial 3D-printing capabilities are briefly reviewed and contrasted with capabilities desired for printing detectors for particle physics, with micro-pattern gaseous detectors used as a first example. A significant impact on industrial technology could be expected if HEP were to partner with industry in taking on such a challenge.

M. Hohlmann

2013-09-03T23:59:59.000Z

184

Final excitation energy of fission fragments  

E-Print Network (OSTI)

We study how the excitation energy of the fully accelerated fission fragments is built up. It is stressed that only the intrinsic excitation energy available before scission can be exchanged between the fission fragments to achieve thermal equilibrium. This is in contradiction with most models used to calculate prompt neutron emission where it is assumed that the total excitation energy of the final fragments is shared between the fragments by the condition of equal temperatures. We also study the intrinsic excitation-energy partition according to a level density description with a transition from a constant-temperature regime to a Fermi-gas regime. Complete or partial excitation-energy sorting is found at energies well above the transition energy.

Karl-Heinz Schmidt; Beatriz Jurado

2011-04-14T23:59:59.000Z

185

How to excite a rogue wave  

Science Conference Proceedings (OSTI)

We propose initial conditions that could facilitate the excitation of rogue waves. Understanding the initial conditions that foster rogue waves could be useful both in attempts to avoid them by seafarers and in generating highly energetic pulses in optical fibers.

Akhmediev, N.; Ankiewicz, A. [Optical Sciences Group, Research School of Physical Sciences and Engineering, Australian National University, Canberra, Australian Capital Territory 0200 (Australia); Soto-Crespo, J. M. [Instituto de Optica, CSIC, Serrano 121, 28006 Madrid (Spain)

2009-10-15T23:59:59.000Z

186

Disability equality and discrimination in higher education: staff and student perceptions of the 'reasonable' adjustments made for print disabled students.  

E-Print Network (OSTI)

??The aim of this research was to explore staff and student experiences of the barriers print disabled students face and the adjustments made to overcome (more)

Rowlett, Emma Jane

2011-01-01T23:59:59.000Z

187

Fast pulsed excitation wiggler or undulator  

DOE Patents (OSTI)

A fast pulsed excitation, electromagnetic undulator or wiggler, employing geometrically alternating substacks of thin laminations of ferromagnetic material, together with a single turn current loop excitation of the composite assembly, of such shape and configuration that intense, spatially alternating, magnetic fields are generated; for use as a pulsed mode undulator or wiggler radiator, for use in a Free Electron Laser (FEL) type radiation source or, for use in an Inverse Free Electron Laser (IFEL) charged particle accelerator.

Van Steenbergen, A.

1989-06-20T23:59:59.000Z

188

Fast pulsed excitation wiggler or undulator  

DOE Patents (OSTI)

A fast pulsed excitation, electromagnetic undulator or wiggler, employing geometrically alternating substacks of thin laminations of ferromagnetic material, together with a single turn current loop excitation of the composite assembly, of such shape and configuration that intense, spatially alternating, magnetic fields are generated; for use as a pulsed mode undulator or wiggler radiator, for use in a Free Electron Laser (FEL) type radiation source or, for use in an Inverse Free Electron Laser (IFEL) charged particle accelerator.

van Steenbergen, Arie (Shoreham, NY)

1990-01-01T23:59:59.000Z

189

An effective stochastic excitation strategy for finding elusive...  

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

An effective stochastic excitation strategy for finding elusive NMR signals from solids Title An effective stochastic excitation strategy for finding elusive NMR signals from...

190

To save campaign costs, use the e-Giving paperless or print  

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

save campaign costs, use the e-Giving paperless or print save campaign costs, use the e-Giving paperless or print and submit form options at www.cfcnca.org. You can donate through payroll deduction to spread your giving over the year or choose credit/debit card, electronic check, cash or check. If you complete your Pledge Form online, you also must write your Social Security Number on the copy that is submitted to the payroll office for payroll deduction. Check with your Keyworker if your payroll office accepts an alternate identification number. If using the paper Pledge Form, please follow these steps: ➤ Print all information FIRMLY using a ballpoint pen because you are making three copies. Refer to the charity code numbers and descriptions in our online charity search or in this catalog. All charities have a five-digit

191

E-print Network home page -- Energy, science, and technology for the  

Office of Scientific and Technical Information (OSTI)

Energy, science, and technology for the research community! Energy, science, and technology for the research community! Enter Search Terms Search Advanced Search The E-print Network is . . . . . . a vast, integrated network of electronic scientific and technical information created by scientists and research engineers active in their respective fields, all full-text searchable. E-print Network is intended for use by other scientists, engineers, and students at advanced levels. . . . a gateway to over 35,300 websites and databases worldwide, containing over 5.5 million e-prints in basic and applied sciences, primarily in physics but also including subject areas such as chemistry, biology and life sciences, materials science, nuclear sciences and engineering, energy research, computer and information technologies, and other disciplines of

192

Collection Descriptions for the E-print Network -- Energy, science, and  

Office of Scientific and Technical Information (OSTI)

Collection Descriptions Collection Descriptions E-prints on Subject Web Sites Coverage: provided by each unique Web site crawled (over 2.5 million documents) Description: The E-prints on Subject Web Sites collections contain electronic scientific and technical information created by scientists and research engineers active in their respective fields. These collections are intended for use by other scientists, engineers, and students at advanced levels in basic and applied sciences. Subject categories are Biology and Medicine; Biotechnology; Chemistry; Computer Technologies and Information Sciences; Energy Storage, Conversion and Utilization; Engineering; Environmental Management and Restoration Technologies; Environmental Sciences and Ecology; Fission and Nuclear Technologies; Fossil Fuels;

193

Exciting White Lighting | Department of Energy  

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

Exciting White Lighting Exciting White Lighting Exciting White Lighting April 23, 2010 - 10:27am Addthis Joshua DeLung In the future, your office building's windows might be replaced with windows that have transparent organic light-emitting diodes in them so that, during the day, you can see through them, but at night you might turn on your windows so that the OLEDs emit light into the room. That's what Janice Mahon, vice president of Technology Commercialization at New Jersey-based Universal Display, calls "a fun concept with real potential." Though Universal Display's PHOLED technology and materials can already be found in a variety of OLED displays for cell phones and TVs, OLED production for lighting may ramp up much faster because they are easier to manufacture. Universal Display specializes in developing patents in advanced

194

Assessing the operational life of flexible printed boards intended for continuous flexing applications : a case study.  

Science Conference Proceedings (OSTI)

Through the vehicle of a case study, this paper describes in detail how the guidance found in the suite of IPC (Association Connecting Electronics Industries) publications can be applied to develop a high level of design assurance that flexible printed boards intended for continuous flexing applications will satisfy specified lifetime requirements.

Beck, David Franklin

2011-01-01T23:59:59.000Z

195

A hybrid approach to outlier detection in the offset lithographic printing process  

Science Conference Proceedings (OSTI)

Artificial neural networks are used to model the offset printing process aiming to develop tools for on-line ink feed control. Inherent in the modelling data are outliers owing to sensor faults, measurement errors and impurity of materials used. It is ... Keywords: Fuzzy expert, Leverages, Neural network, Outlier detection

C. Englund; A. Verikas

2005-09-01T23:59:59.000Z

196

Segmentation of historical machine-printed documents using Adaptive Run Length Smoothing and skeleton segmentation paths  

E-Print Network (OSTI)

of the valuable historical collections. In order to achieve accu- rate recognition results, a robust and efficientSegmentation of historical machine-printed documents using Adaptive Run Length Smoothing Stamatopoulos b , Nikos Papamarkos a a Department of Electrical and Computer Engineering, Democritus University

Gatos, Basilios

197

Mar 24th 2011 | from the print edition 0 40Like Battery technology  

E-Print Network (OSTI)

Mar 24th 2011 | from the print edition 0 40Like Battery technology Highly charged A powerful experimental battery that can be recharged completely in minutes ENGINEERS have long dreamed of shortening the time it takes to recharge batteries. Currently, that can be hours. For applications like motor vehicles

Braun, Paul

198

Graphene Transistors Fabricated via Transfer-Printing In Device Active-Areas  

E-Print Network (OSTI)

growth.5 However, to use graphene as the material for integrated circuits we need high-quality graphene. wafers. This paper reports a demonstration of a different approach to achieve high-quality graphene- printing (DCT), does not intend to put high-quality graphene everywhere on a large substrate but rather

199

Anaerobic Baffled Reactor (ABR) for Alkali-minimization Dyeing-printing Wastewater Biodegradation  

Science Conference Proceedings (OSTI)

The performance of the laboratory scale anaerobic baffled reactor (ABR) was investigated by the use of granular sludge to treat alkali-minimization and dyeing-printing wastewater (ADW-water). The experiment showed that the start-up of reactor was completed ... Keywords: ABR, ADW-water, Granular sludge, UV254, VFA

Qijun Zhong; Bo Yang

2012-05-01T23:59:59.000Z

200

J . Fluid Mech. (1989),vol. 207, p p . 133-152 Printed in Great Britain  

E-Print Network (OSTI)

with a fixed randomly generated velocity field. At infinite resolution, the modified dynamics with energyJ . Fluid Mech. (1989),vol. 207, p p . 133-152 Printed in Great Britain 133 Extremal energy) Certain modifications of the Euler equations of fluid motion lead to systems in which the energy decays

Vallis, Geoff

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


201

J . Fluid Mech. (1980),vol. 100, part 4, pp. 705-737 Printed in &eat Britain  

E-Print Network (OSTI)

J . Fluid Mech. (1980),vol. 100, part 4, pp. 705-737 Printed in &eat Britain 706 Vortex dynamics, and if they equilibrate between mergings, conservation of energy and angular momentum #12;Vortex dynamics of the turbulent, with vortices of one generation merging to form the larger vortices of the next generation. The reader

Siggia, Eric

202

A simple and versatile micro contact printing method for generating carbon nanotubes patterns on various substrates  

Science Conference Proceedings (OSTI)

We present an optimized process for generating at low cost, patterns of carbon nanotubes (CNTs) on a large variety of substrates through a simple micro contact printing method. This method meets the requirements for the integration of CNTs into microdevices, ... Keywords: Carbon nanotubes, Flexible electronics, Micro-patterning, Soft-lithography, Spray-coating

A. BDuer; F. Seichepine; E. Flahaut; C. Vieu

2012-09-01T23:59:59.000Z

203

Instructions for setting up a "Print to FILE" printer Windows 2000/ME/XP  

E-Print Network (OSTI)

Instructions for setting up a "Print to FILE" printer Windows 2000/ME/XP Select "Start -> Printers "Next" On the "Install Printer Software screen", select "Generic" in the left window (Manufacturer) and "Generic / Text Only" in the right window (Printers), then click "Next". On the "Name Your Printer" screen

DeSante, David F.

204

Biomass and &nergy Vol. 3, No. 5, pp. 301-307, 1992 Printed in Great Britain  

E-Print Network (OSTI)

Biomass and &nergy Vol. 3, No. 5, pp. 301-307, 1992 Printed in Great Britain 0961-9534/92 $5.00 + 0 saccharification and fermentation (SSF) process is a favored option for conversion of the lignocellulosic biomass biomass, ethanol, woody crops, herbaceous crops, agricultural residues. 1. INTRODUCIION Although ethanol

California at Riverside, University of

205

A Comparative Study between Decision Fusion and Data Fusion in Markovian Printed Character Recognition  

Science Conference Proceedings (OSTI)

A comparison is made between several Hidden Markov Models in the context of printed character recognition. Two HMMs are first compared, one dealing with columns of a character image, the other dealing with lines. These 2 HMMs are then associated in a ...

Khalid Hallouli; Laurence Likforman-Sulem; Marc Sigelle

2002-08-01T23:59:59.000Z

206

Double Photoionization of excited Lithium and Beryllium  

SciTech Connect

We present total, energy-sharing and triple differential cross sections for one-photon, double ionization of lithium and beryllium starting from aligned, excited P states. We employ a recently developed hybrid atomic orbital/ numerical grid method based on the finite-element discrete-variable representation and exterior complex scaling. Comparisons with calculated results for the ground-state atoms, as well as analogous results for ground-state and excited helium, serve to highlight important selection rules and show some interesting effects that relate to differences between inter- and intra-shell electron correlation.

Yip, Frank L.; McCurdy, C. William; Rescigno, Thomas N.

2010-05-20T23:59:59.000Z

207

Emerging Technologies in the Built Environment: Geographic Information Science (GIS), 3D Printing, and Additive Manufacturing  

SciTech Connect

Abstract 1: Geographic information systems emerged as a computer application in the late 1960s, led in part by projects at ORNL. The concept of a GIS has shifted through time in response to new applications and new technologies, and is now part of a much larger world of geospatial technology. This presentation discusses the relationship of GIS and estimating hourly and seasonal energy consumption profiles in the building sector at spatial scales down to the individual parcel. The method combines annual building energy simulations for city-specific prototypical buildings and commonly available geospatial data in a GIS framework. Abstract 2: This presentation focuses on 3D printing technologies and how they have rapidly evolved over the past couple of years. At a basic level, 3D printing produces physical models quickly and easily from 3D CAD, BIM (Building Information Models), and other digital data. Many AEC firms have adopted 3D printing as part of commercial building design development and project delivery. This presentation includes an overview of 3D printing, discusses its current use in building design, and talks about its future in relation to the HVAC industry. Abstract 3: This presentation discusses additive manufacturing and how it is revolutionizing the design of commercial and residential facilities. Additive manufacturing utilizes a broad range of direct manufacturing technologies, including electron beam melting, ultrasonic, extrusion, and laser metal deposition for rapid prototyping. While there is some overlap with the 3D printing talk, this presentation focuses on the materials aspect of additive manufacturing and also some of the more advanced technologies involved with rapid prototyping. These technologies include design of carbon fiber composites, lightweight metals processing, transient field processing, and more.

New, Joshua Ryan [ORNL

2014-01-01T23:59:59.000Z

208

19th European Photovoltaic Solar Energy Conference Pre-Print 4AV.1.45 QUANTUM EFFICIENCY OF CdTe SOLAR CELLS IN FORWARD BIAS  

E-Print Network (OSTI)

19th European Photovoltaic Solar Energy Conference Pre-Print 4AV.1.45 QUANTUM EFFICIENCY OF Cd;19th European Photovoltaic Solar Energy Conference Pre-Print 4AV.1.45 Figure 2 shows the numerical as #12;19th European Photovoltaic Solar Energy Conference Pre-Print 4AV.1.45 CE V( )= J V,100%( )- J V

Sites, James R.

209

Ionic electrostatic excitations along biological membranes  

Science Conference Proceedings (OSTI)

A theoretical analysis of ionic electrostatic excitations of a charged biological membrane is presented within the framework of the fluid theory for surface ions inside and outside the cell, in conjunction with the Poisson's equation. General expressions of dispersion relations are obtained for electrostatic oscillations of intrinsic cellular with different shapes and symmetries.

Moradi, Afshin [Department of Nano Science, Kermanshah University of Technology, Kermanshah 67178-63766 (Iran, Islamic Republic of) and Department of Nano Science, Institute for Studies in Theoretical Physics and Mathematics (IPM), Tehran 19395-5531 (Iran, Islamic Republic of)

2011-02-15T23:59:59.000Z

210

The CLAS Excited Baryon Program at Jlab  

DOE Green Energy (OSTI)

Nucleons are complex systems of confined quarks and exhibit characteristic spectra of excited states. Highly excited nucleon states are sensitive to details of quark confinement which is poorly understood within Quantum Chromodynamics (QCD), the fundamental theory of strong interactions. Thus, measurements of excited states and the corresponding determination of their properties are needed to come to a better understanding of how confinement works in nucleons. However, the excited states of the nucleon cannot simply be inferred from cleanly separated spectral lines. Quite the contrary, a spectral analysis in nucleon resonance physics is challenging because of the fact that the resonances are broadly overlapping states which decay into a multitude of final states involving mesons and baryons. To provide a consistent and complete picture of an individual nucleon resonance, the various possible production and decay channels must be treated in a multichannel framework that permits separating resonance from background contributions. Very often, resonances reveal themselves more clearly through interference with dominant amplitudes. These interference terms can be isolated via polarization observables. The current CLAS effort is to utilize highly-polarized hydrogen and deuterium targets as well as polarized photon beams toward a complete measurement of a large number of reaction channels.

Volker Crede

2007-10-01T23:59:59.000Z

211

Edge Excitations in Fractional Chern Insulators  

E-Print Network (OSTI)

Recent theoretical works have demonstrated the realization of fractional quantum anomalous Hall states (also called fractional Chern insulators) in topological flat band lattice models without an external magnetic field. Such newly proposed lattice systems play a vital role to obtain a large class of fractional topological phases. Here we report the exact numerical studies of edge excitations for such systems in a disk geometry loaded with hard-core bosons, which will serve as a more viable experimental probe for such topologically ordered states. We find convincing numerical evidence of a series of edge excitations characterized by the chiral Luttinger liquid theory for the bosonic fractional Chern insulators in both the honeycomb disk Haldane model and the kagom\\'{e}-lattice disk model. We further verify these current-carrying chiral edge states by inserting a central flux to test their compressibility.

Wei-Wei Luo; Wen-Chao Chen; Yi-Fei Wang; Chang-De Gong

2013-04-16T23:59:59.000Z

212

E-print Network Alerts Help -- Energy, science, and technology for the  

Office of Scientific and Technical Information (OSTI)

Alerts Help Alerts Help Alerts will make your recurring searches even easier by automating your search and sending you the results on a regular basis. To receive alerts on your topic(s) of interest, simply create an Alerts account, specify your alert parameters and check your email. For additional information, please choose from one of the below help topics. Alerts Help Topics: Creating an Alerts account Alerts Homepage Create an alert Creating an alert from your search Receiving alerts Viewing alerts Selecting printing, emailing, and exporting alerts Storing alerts Modifying alerts Deleting an alert Alerts Search Tips E-print Network Alerts Fast Facts You can easily create an alert right from the results page. Alerts run automatically, based on the schedule you choose. New relevantly ranked results are automatically sent to you through

213

E-print Network Architecture -- Energy, science, and technology for the  

Office of Scientific and Technical Information (OSTI)

Architecture: What is under the Hood Architecture: What is under the Hood E-print Network allows the information patron to search multiple data sources with a single query from the user interface. While the user gets a seamless, Google-like search and retrieval experience, sophisticated Web technology is used behind the scenes. Such sophistication is necessitated by the fact that different researchers and research organizations use different mechanisms to publish e-prints. The publication mechanisms fall into one of two general categories. First, "papers" and articles can be published in databases or portals. Typically, such databases and portals have their own search engine, and they are often not readily crawled and indexed. Alternatively, "papers" and articles can be published as simple

214

About the E-print Network -- Energy, science, and technology for the  

Office of Scientific and Technical Information (OSTI)

About About General Information E-prints are scholarly and professional works electronically produced and shared by researchers with the intent of communicating research findings to colleagues. They may include preprints, reprints, technical reports, conference publications or other means of electronic communication. Preprints, those selectively shared pre-published documents or articles going through the publication process, have long been recognized and utilized by peer groups throughout the scientific community. Recent technological advances, however, have incorporated preprints with other forms of peer communications to establish an information genre in its own right. Therefore, the more inclusive term e-prints is more appropriate to use currently in describing this rich and valuable source of scientific and

215

Install the E-print Network toolbar -- Energy, science, and technology for  

Office of Scientific and Technical Information (OSTI)

Browser Toolbar The E-print Network offers a browser toolbar for easy access to e-print searches and discipline pages. EPN browser toolbar Two installation options are available for the EPN browser toolbar: Internet Explorer - Download and install the toolbar using the Softomate ActiveX Web installer Please select "Install ActiveX Control" when prompted by your browser. Install toolbar for Internet Explorer Can't see the toolbar after installing? Note: Browser security settings at some organizations may prevent installation or use of the toolbar in Internet Explorer. Try installing the toolbar in the FireFox browser, using the button below. Minimum System Requirements: Windows XP/Vista Internet Explorer 6 or Firefox 2 FireFox - Install toolbar for FireFox

216

Browse by Discipline -- Subject Pathways for the E-print Network -- Energy,  

Office of Scientific and Technical Information (OSTI)

Browse by Discipline These pages contain links to thousands of servers, sites, and documents contributed by individual authors that contain e-print information in discipline areas of interest to the Department of Energy's research activities. These resources are organized into discipline-specific categories as indicated below. To view these resources and sites, simply select a discipline, browse the entries listed in alphabetical order, and click on any entry to leave the discipline you selected and enter a specific website. Use the "Back" button to return to the E-print Discipline you exited from. Biology and Medicine Biotechnology Computer Technologies and Information Sciences Chemistry Energy Storage, Conversion and Utilization Engineering Environmental Management and Restoration Technologies

217

Excitation of a slow wave structure  

SciTech Connect

The Green's function on a slow wave structure is constructed. The Green's function includes all radial modes, and for each radial mode, all space harmonics. We compare the analytic solution of the frequency response on the slow wave structure with that obtained from a particle-in-cell code. Favorable comparison is obtained when the first few lower order modes are resonantly excited. This gives some confidence in the prediction of converting a pulse train into radiation using a slow wave structure.

Zhang Peng; Lau, Y. Y. [Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109-2104 (United States); Hoff, Brad; French, D. M. [Air Force Research Laboratory, Kirtland AFB, Albuquerque, New Mexico 87117 (United States); Luginsland, J. W. [Air Force Office of Scientific Research, Arlington, Virginia 22203 (United States)

2012-12-15T23:59:59.000Z

218

J . Fluid Mech. (1978),vol. 86, part 3, pp. 567-592 Printed in Oreat Britain  

E-Print Network (OSTI)

-dimensional turbulence 575 k (cm-') FIGURE5. Energy spectra generated by the linear forcing defined in (2.3)with R = 0.4s J . Fluid Mech. 41,453. FRISCH,U., SULEM,P. L. & NELKIN,M. 1978 A simple dynamical modelJ . Fluid Mech. (1978),vol. 86, part 3, pp. 567-592 Printed in Oreat Britain 567 Intermittency

Siggia, Eric

219

DYNAMICAL ANALYSIS OF HIGHLY EXCITED MOLECULAR SPECTRA  

SciTech Connect

Spectra and internal dynamics of highly excited molecules are essential to understanding processes of fundamental importance for combustion, including intramolecular energy transfer and isomerization reactions. The goal of our program is to develop new theoretical tools to unravel information about intramolecular dynamics encoded in highly excited experimental spectra. We want to understand the formations of ''new vibrational modes'' when the ordinary normal modes picture breaks down in highly excited vibrations. We use bifurcation analysis of semiclassical versions of the effective Hamiltonians used by spectroscopists to fit complex experimental spectra. Specific molecular systems are of interest for their relevance to combustion and the availability of high-quality experimental data. Because of its immense importance in combustion, the isomerizing acetylene/vinylidene system has been the object of long-standing experimental and theoretical research. We have made significant progress in systematically understanding the bending dynamics of the acetylene system. We have begun to make progress on extending our methodology to the full bend-stretch vibrational degrees of freedom, including dynamics with multiple wells and above barrier motion, and time-dependent dynamics. For this, development of our previous methods using spectroscopic fitting Hamiltonians is needed, for example, for systems with multiple barriers.

Michael E. Kellman

2005-06-17T23:59:59.000Z

220

Excitation Fields in a Superconducting Global String  

E-Print Network (OSTI)

A model of a straight superconducting global cosmic string is examined in a setting wherein the string supports a charge/current pulse described by a travelling wave along the string. Linearized field equations are obtained for fluctuations of the scalar and vector fields of the theory, and a set of approximate particular solutions are found for the case in which the linear charge density and the current of the string have equal magnitudes. Although the equations of motion seem to suggest that the scalar and vector excitation fields are massive inside the string core, the particular solutions show that they behave as effectively massless fields which propagate at the speed of light along the string along with the primary charge/current pulse. The effect of the mass parameter is to modulate the radial profile of the excitation fields. The vector excitation field generates radial and angular components for both the electric and magnetic fields, but the particular solutions do not describe the emission or absorption of electromagnetic radiation from the string.

J. R. Morris

1995-09-28T23:59:59.000Z

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


221

Excitation of Rainfall over the Tropical Western Pacific  

Science Conference Proceedings (OSTI)

The authors have examined 4 years of satellite-derived SST and rainfall data in anticipation of a relationship between SST structure and the excitation of convective rainfall. The results exhibit a strong excitation signal consistent with the ...

Yanping Li; R. E. Carbone

2012-10-01T23:59:59.000Z

222

E-print Network Web Log News: Research Communications for Scientists and  

Office of Scientific and Technical Information (OSTI)

Archive Archive Search Archive August 11, 2006 We’ve had a number of inquiries about how to best search our E-prints on Web-sites feature for individual authors. Here’s what you do. First be sure that the E-prints on Web sites box is checked then go down to the Creator/Author search box and enter the researcher’s last name followed by the first name but use no punctuation between the names. For instance if you were looking for John Brown you would enter in the Creator/Author Box Brown John Then start the search by clicking black search button near the bottom of the page. Please note that the author searching in the E-prints on Web-sites works only for authors who have provided eprints on their web sites. This means that searching for any other author will not return useful results. Also you should find that when multiple authors provide the same eprint, searching for any of the providing authors will retrieve the paper.

223

Review and Understanding of Screen-Printed Contacts and Selective-Emitter Formation: Preprint  

DOE Green Energy (OSTI)

A comparison of the loss mechanisms in screen-printed solar cells relative to buried contact cells and cells with photolithography-defined contacts is presented in this paper. Model calculations show that emitter recombination accounts for about 0.5% absolute efficiency loss in conventional screen-printed cells with low-sheet-resistance emitters. Ohmic contact to high-sheet-resistance emitters by screen-printing has been investigated to regain this efficiency loss. Our work shows that good quality ohmic contacts to high sheet-resistance emitters can be achieved if the glass frit chemistry and Ag particle size are carefully tailored. The melting characteristics of the glass frit determine the firing scheme suitable for low contact resistance and high fill factors. In addition, small to regular Ag particles were found to help achieve a higher open-circuit voltage and maintain a low contact resistance. This work has resulted in cells with high fill factors (0.782) on high sheet-resistance emitters and efficiencies of 17.4% on planar float zone Si substrates, without the need for a selective emitter.

Hilali, M. M.; Rohatgi, A.; To, B.

2004-08-01T23:59:59.000Z

224

3D Printing: High-impact Emerging Technology - What You Need to Know Definitions, Adoptions, Impact, Benefits, Maturity, Vendors  

Science Conference Proceedings (OSTI)

3D printing is a form of additive manufacturing technology where a three dimensional object is created by laying down successive layers of material. 3D printers are generally faster, more affordable and easier to use than other additive manufacturing ...

Kevin Roebuck

2011-05-01T23:59:59.000Z

225

Design and development of an automated three axis machine that prints images on top of the foam of certain beverages  

E-Print Network (OSTI)

The goal of this research was to design and develop a working alpha prototype of the flagship product for a local startup called Onlatte, Inc. OnLatte specializes in automated printing of images on top of the foam of ...

Richardson, Jeremy S. H

2009-01-01T23:59:59.000Z

226

Achieving Six Sigma printed circuit board yields by improving incoming component quality and using a PCBA prioritization algorithm  

E-Print Network (OSTI)

Printed circuit board assemblies (PCBAs) are the backbone of the electronics industry. PCBA technologies are keeping pace with Moore's Law and will soon enable the convergence of video, voice, data, and mobility onto a ...

Davis, Daniel Jacob

2008-01-01T23:59:59.000Z

227

Optimization of Two-photon Excited Fluorescence Enhancement between Tunable and Broadband Femtosecond Laser Pulse Excitations  

E-Print Network (OSTI)

This project explores optimization of two-photon excited fluorescence (TPEF) enhancement between tunable narrowband and un-tuned broadband femtosecond (fs) laser pulse excitations for two-photon microscopy (TPM). The research is conducted preliminarily in time domain and comprehensively in frequency domain to understand the physics behind TPEF enhancement by un-tuned sub-10 fs nearly transform-limited pulse (TLP) versus tunable 140 fs pulse. The preliminary study on inverse proportionality of TPEF yield to fs-pulse duration delimits a general lower-bound to narrowband fs-pulse regime (pulse duration > 40 fs) with assumption of dye-molecule frequency invariant response. Deviations from this inverse proportionality in broadband fs-pulse regime (pulse duration < 40 fs) highlights dye-molecule frequency variant response, necessity of group delay dispersion (GDD) compensation, and broadband TLP for TPEF enhancement. The follow-up comparative study is made on un-tuned sub-10 fs TLP versus tunable 140 fs pulse excitations using three dye-phantoms (Indo-1, FITC, and TRITC) representative of fluorescent probes with similar TPEF characteristics. The integrated experimental system, with custom-designed GDD compensation, dispersion-less laser-beam expanding and focusing, and compound-lens for efficient fluorescence collection with good spectral resolution, ensures accurate TPEF measurements. Differentiated TPEF enhancements of Indo-1 (1.6), FITC (6.7), and TRITC (5.2) proportionally agree with calculated ones due to the overlap of fs-pulse second harmonic (SH) power spectrum with dye-molecule two-photon excitation (TPE) spectrum. Physically speaking, with broadband sub-10 fs TLP readily involved in both degenerate (v1 = v2) and non-degenerate (v1 ? v2) two-photon absorption (TPA), this un-tuned ultrashort fs-pulse excitation simultaneously allows for more accessibility to TPA-associated final states and diversely promotes population of thus excited dye-molecules with the three dye-phantoms. Under environmental influences (mutual quenching through one-photon absorption(s) and solvent effect), multicolor TPEF enhancement observed from a mixture of the three dyes shows promise of sub-10 fs TLP as simultaneous excitation for multiple-dye labeled samples in contrast to compromised excitation with narrowband fs-pulse tuning. Both single- and multicolor TPEF enhancements clarify tradeoff between tunability of narrowband fs-pulse and un-tuned broadband fs-pulse excitations, being instructive to further considerations on optimization of TPEF enhancement by strategic utilization of broadband fs-pulse for better performance of TPM.

Wang, Chao

2011-12-01T23:59:59.000Z

228

Contribution of excited hydrogen atoms to charge-exchange excitation of impurities in fusion plasmas  

DOE Green Energy (OSTI)

Cross sections are calculated for charge transfer into excited states of C/sup 5 +/ and O/sup 7 +/ from collisions of C/sup 6 +/ and O/sup 8 +/ with hydrogen atoms in the n = 2 and 3 levels. Effective emission cross sections that account for cascading are then derived for spectral lines emitted when the product ions decay. These are compared to the emission cross sections calculated for excitation by ground-state hydrogen. It is shown that in some circumstances the contribution from excited hydrogen atoms must be taken into account when visible lines are used to determine the oxygen or carbon density from charge-exchange spectroscopy in plasmas. Influences on Lyman-series spectra in the x-ray region are also discussed.

Isler, R.C.; Olson, R.E.

1988-05-01T23:59:59.000Z

229

Excited light isoscalar mesons from lattice QCD  

Science Conference Proceedings (OSTI)

I report a recent lattice QCD calculation of an excited spectrum of light isoscalar mesons, something that has up to now proved challenging for lattice QCD. With novel techniques we extract an extensive spectrum with high statistical precision, including spin-four states and, for the first time, light isoscalars with exotic quantum numbers. In addition, the hidden flavour content of these mesons is determined, providing a window on annihilation dynamics in QCD. I comment on future prospects including applications to the study of resonances.

Christopher Thomas

2011-07-01T23:59:59.000Z

230

Collective Excitations in Electron-Hole Bilayers  

Science Conference Proceedings (OSTI)

We report a combined analytic and molecular dynamics analysis of the collective mode spectrum of a bipolar (electron-hole) bilayer in the strong coupling classical limit. A robust, isotropic energy gap is identified in the out-of-phase spectra, generated by the combined effect of correlations and of the excitation of the bound dipoles. In the in-phase spectra we identify longitudinal and transverse acoustic modes wholly maintained by correlations. Strong nonlinear generation of higher harmonics of the fundamental dipole oscillation frequency and the transfer of harmonics between different modes is observed.

Kalman, G. J. [Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467 (United States); Hartmann, P.; Donko, Z. [Research Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, P.O. Box 49, H-1525 Budapest (Hungary); Golden, K. I. [Department of Mathematics and Statistics and Department of Physics, University of Vermont, Burlington, Vermont 05401 (United States)

2007-06-08T23:59:59.000Z

231

Nucleon excited states on the lattice  

E-Print Network (OSTI)

We study the pion-nucleon system in s-wave in the framework of lattice QCD in order to gain new information on the nucleon excited states. We perform simulations for $n_f =2$ mass degenerate light quarks at a pion mass of 266 MeV. The results show that including the two-particle states drastically changes the energy levels. The variational analysis and the distillation approach play an important role in the extraction of the energy levels. The phase shift analysis allows to extract information on the resonance nature of the observed states.

C. B. Lang; V. Verduci

2013-04-15T23:59:59.000Z

232

Nucleon excited states on the lattice  

E-Print Network (OSTI)

We study the pion-nucleon system in s-wave in the framework of lattice QCD in order to gain new information on the nucleon excited states. We perform simulations for $n_f =2$ mass degenerate light quarks at a pion mass of 266 MeV. The results show that including the two-particle states drastically changes the energy levels. The variational analysis and the distillation approach play an important role in the extraction of the energy levels. The phase shift analysis allows to extract information on the resonance nature of the observed states.

Lang, C B

2013-01-01T23:59:59.000Z

233

Dual excitation acoustic paramagnetic logging tool  

DOE Patents (OSTI)

New methods and apparatus are disclosed which allow measurement of the presence of oil and water in geological formations using a new physical effect called the Acoustic Paramagnetic Logging Effect (APLE). The presence of petroleum in formation causes a slight increase in the earth's magnetic field in the vicinity of the reservoir. This is the phenomena of paramagnetism. Application of an acoustic source to a geological formation at the Larmor frequency of the nucleons present causes the paramagnetism of the formation to disappear. This results in a decrease in the earth's magnetic field in the vicinity of the oil bearing formation. Repetitively frequency sweeping the acoustic source through the Larmor frequency of the nucleons present (approx. 2 kHz) causes an amplitude modulation of the earth's magnetic field which is a consequence of the APLE. The amplitude modulation of the earth's magnetic field is measured with an induction coil gradiometer and provides a direct measure of the amount of oil and water in the excitation zone of the formation. The phase of the signal is used to infer the longitudinal relaxation times of the fluids present, which results in the ability in general to separate oil and water and to measure the viscosity of the oil present. Such measurements may be performed in open boreholes and in cased well bores. The Dual Excitation Acoustic Paramagnetic Logging Tool employing two acoustic sources is also described. 6 figs.

Vail, W.B. III.

1989-02-14T23:59:59.000Z

234

Dual excitation acoustic paramagnetic logging tool  

DOE Patents (OSTI)

New methods and apparatus are disclosed which allow measurement of the presence of oil and water in gelogical formations using a new physical effect called the Acoustic Paramagnetic Logging Effect (APLE). The presence of petroleum in formation causes a slight increase in the earth's magnetic field in the vicinity of the reservoir. This is the phenomena of paramagnetism. Application of an acoustic source to a geological formation at the Larmor frequency of the nucleous present causes the paramagnetism of the formation to disappear. This results in a decrease in the earth's magnetic field in the vicinity of the oil bearing formation. Repetitively frequency sweeping the acoustic source through the Larmor frequency of the nucleons present (approx. 2 kHz) causes an amplitude modulation of the earth's magnetic field which is a consequence of the APLE. The amplitude modulation of the earth's magnetic field is measured with an induction coil gradiometer and provides a direct measure of the amount of oil and water in the excitation zone of the formation. The phase of the signal is used to infer the longitudinal relaxation times of the fluids present, which results in the ability in general to separate oil and water and to measure the viscosity of the oil present. Such measurements may be preformed in open boreholes and in cased well bores. The Dual Excitation Acoustic Paramagnetic Logging Tool employing two acoustic sources is also described.

Vail, III, William B. (Bothell, WA)

1989-01-01T23:59:59.000Z

235

Print - TMS  

Science Conference Proceedings (OSTI)

Presented in conjunction with the Low Cost Titanium symposium ... medical implants and surgical instruments, oil and gas exploration, chemical processing, ...

236

Print - TMS  

Science Conference Proceedings (OSTI)

Presenters, Michael Moats, Bill Davenport, Maurice Solar, Tim Robinson, Bruce ... the course will examine the fundamentals and current trends of the processing ...

237

Browse Societies by Language -- E-print Network Societies by Language:  

Office of Scientific and Technical Information (OSTI)

Russian Russian The following scientific society websites represent research and development interests that are within the E-print Network scope. They communicate primarily in Russian or related languages. Some may have minimal English content on the linking pages. Some of these societies may also provide electronic publications and/or information concerning scientific literature published in Russian or related languages. The intent of this compilation is to provide an easy entry point into these scientific communities to encourage the formation of personal contacts among researchers pursuing similar interests. You are currently viewing the page that provides access to Russian language societies. If you wish to view societies in another language, please select

238

Browse Societies by Language -- E-print Network Societies by Language:  

Office of Scientific and Technical Information (OSTI)

Japanese Japanese The following scientific society websites represent research and development interests that are within the E-print Network scope. They communicate primarily in Japanese. Some may have minimal English content on the linking pages. In addition, some of these societies may also provide electronic publications and/or information concerning scientific literature published in Japanese. The intent of this compilation is to provide an easy entry point into these scientific communities to encourage the formation of personal contacts among researchers pursuing similar interests. You are currently viewing the page that provides access to Japanese language societies. If you wish to view societies in another language, please select from the following options.

239

Fluid characterisation and drop impact in inkjet printing for organic semiconductor devices  

E-Print Network (OSTI)

elements provides a typical example. A hole-injection layer and a luminescent layer are formed between a cathode and a transparent indium tin oxide (ITO) anode coated on to a glass substrate. The two layers are deposited by regions of less wettable... -suited for integration with metal oxide dielectric layers, which could enable improved optical and electrical performance. Figure 2-12. Photograph of a 10,000 cd m-2 OLED printed using Ir-based polyhedral oligomeric silsesquioxane (POSS) macromolecules emitting at a...

Jung, Sungjune

2011-07-12T23:59:59.000Z

240

Fission dynamics at low excitation energy  

E-Print Network (OSTI)

The origin of mass asymmetry in the fission of uranium at a low excitation energy is clarified by a trajectory analysis of the Langevin equation. The positions of the peaks in the mass distribution of fission fragments are mainly determined by fission saddle points originating from the shell correction energy. The widths of the peaks, on the other hand, result from a shape fluctuation around the scission point caused by the random force in the Langevin equation. We found that a random vibration in the oblate direction of fissioning fragments is essential for the fission process. According to this picture, fission does not occur with continuous stretching in the prolate direction, similarly to that observed in starch syrup. This is expected to lead to a new viewpoint of fission dynamics and the splitting mechanism.

Y. Aritomo; S. Chiba

2013-10-11T23:59:59.000Z

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


241

Search for intrinsic collective excitations in {sup 152}Sm  

Science Conference Proceedings (OSTI)

The 685 keV excitation energy of the first excited 0{sup +} state in {sup 152}Sm makes it an attractive candidate to explore expected two-phonon excitations at low energy. Multiple-step Coulomb excitation and inelastic neutron scattering studies of {sup 152}Sm are used to probe the E2 collectivity of excited 0{sup +} states in this 'soft' nucleus and the results are compared with model predictions. No candidates for two-phonon K{sup {pi}}=0{sup +}quadrupole vibrational states are found. A 2{sup +},K=2 state with strong E2 decay to the first excited K{sup {pi}}=0{sup +} band and a probable 3{sup +} band member are established.

Kulp, W. D.; Wood, J. L.; Allmond, J. M. [School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430 (United States); Garrett, P. E. [Department of Physics, University of Guelph, Guelph, Ontario N0B 1S0 (Canada); TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3 (Canada); Wu, C. Y.; Cline, D.; Hayes, A. B.; Hua, H.; Teng, R. [Nuclear Structure Research Laboratory, Department of Physics, University of Rochester, Rochester, New York 14627 (United States); Bandyopadhyay, D.; Choudry, S. N.; McEllistrem, M. T.; McKay, C. J.; Orce, J. N. [Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506-0055 (United States); Dashdorj, D. [Department of Physics, North Carolina State University, Raleigh, North Carolina 27695-8202 (United States); Mynk, M. G. [Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055 (United States); Yates, S. W. [Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506-0055 (United States); Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055 (United States)

2008-06-15T23:59:59.000Z

242

Nonlinearity sensing via photon-statistics excitation spectroscopy  

SciTech Connect

We propose photon-statistics excitation spectroscopy as an adequate tool to describe the optical response of a nonlinear system. To this end we suggest to use optical excitation with varying photon statistics as another spectroscopic degree of freedom to gather information about the system in question. The responses of several simple model systems to excitation beams with different photon statistics are discussed. Possible spectroscopic applications in terms of identifying lasing operation are pointed out.

Assmann, Marc; Bayer, Manfred [Experimentelle Physik 2, Technische Universitaet Dortmund, D-44221 Dortmund (Germany)

2011-11-15T23:59:59.000Z

243

Electronic excitations in fast ion-solid collisions  

SciTech Connect

We review recent developments in the study of electronic excitation of projectiles in fast ion-solid collisions. Our focus will be primarily on theory but experimental advances will also be discussed. Topics include the evidence for velocity-dependent thresholds for the existence of bound states, wake-field effects on excited states, the electronic excitation of channeled projectiles, transport phenomena, and the interaction of highly charged ions with surfaces. 44 refs., 14 figs.

Burgdoerfer, J. (Tennessee Univ., Knoxville, TN (USA). Dept. of Physics and Astronomy Oak Ridge National Lab., TN (USA))

1990-01-01T23:59:59.000Z

244

Comparative analysis of print media coverage of nuclear power and coal issues  

SciTech Connect

Nuclear power has been a more important topic than has coal for the print media, and has received somewhat different treatment. Compared to the number of coal articles, almost twice as many nuclear power articles were printed from 1972 through 1976. Also, while the number of nuclear power articles increased somewhat steadily from 1972 through 1976, the number of coal articles peaked in 1974 and has decreased since. The newspapers sampled gave more prominence to nuclear articles in terms of article type and article location. Also, nuclear articles were more often issue-oriented compared to coal articles. Coal articles were most often about coal mining, labor force concerns, and regulations controls. Nuclear power articles, on the other hand, were mostly about reactor operation. The main issues discussed in the coal articles pertained most to political decisions affecting coal use, to strikes, and to health and safety. The main nuclear issues pertained to economics, to health and safety, and to political decisions. Newspapers handled nuclear power articles in a more polarized manner compared to coal articles which were handled in a more neutral manner. Magazine articles were significantly more antinuclear than anticoal. Some qualifications about these conclusions are included. (LTN)

Nealey, S.M.; Rankin, W.L.; Montano, D.E.

1978-10-01T23:59:59.000Z

245

Ultrasonically Sprayed and Inkjet Printed Thin Film Electrodes for Organic Solar Cells  

Science Conference Proceedings (OSTI)

Thin film pi-conjugated poly(3,4ethylenedioxythiophene): poly(styrenesulphonate) (PEDOT:PSS) as a hole transport layer on indium tin oxide is a key element in some of the most efficient organic photovoltaic and light emitting devices to date. Films are typically deposited by spincoating, which is not readily scalable. In this paper we investigate the critical parameters for both inkjet and ultrasonic spray deposition of PEDOT:PSS thin films on commercial indium tin oxide as a potentially scalable approach to contact formation. Inkjet parameters investigated include drop spacing and substrate temperature. Ultrasonic spray coating parameters investigated include substrate temperature and solution flow rate. We also show that the ink viscosity has a Newtonian character, making it well suited for inkjet printing. Films were characterized via optical profilometry, sheet resistance and atomic force microscopy. Optimized inkjet printed and ultrasonic sprayed PEDOT:PSS films were then compared to spincast layers in a prototypical bulk heterojunction photovoltaic device employing a poly(3-hexylthiophene) and [6,6]-PCBM (6,6-phenylC61-butyric acid-methyl ester) blend as the absorber. Practically all three approaches produced devices of comparable efficiency. Efficiencies were 3.6%, 3.5% and 3.3% for spin, spray and inkjet depositions respectively.

Steirer, K. X.; Berry, J. J.; Reese, M. O.; van Hest, M. F. A. M.; Miedaner, A.; Liberatore, M. W.; Collins, R. T.; Ginley, D. S.

2009-01-01T23:59:59.000Z

246

Magnetic Phase Transition and Spin Wave Excitations in the ...  

Science Conference Proceedings (OSTI)

... An energy scan through the spin wave excitations ... The intensity above TC comes from paramagnetic spin ... quickly move to higher energies and out ...

2013-03-14T23:59:59.000Z

247

FISSION AND SPALLATION EXCITATION FUNCTIONS OF U238  

E-Print Network (OSTI)

Spallation Cro ss Sections Fission Product Cross Sections V.B. Spallation Reactions Fission Yields Acknowledgme nts . .UNIVERSITY OF CALIFORNIA ;"~I FISSION SPALLATION EXCITATION

Ritsema, Susanne Elaine

2010-01-01T23:59:59.000Z

248

Electromagnetic Analysis of Rotating Permanent Magnet Exciters for Hydroelectric Generators.  

E-Print Network (OSTI)

??The purpose of this project is to analyse different design possibilities for a rotating permanent magnet exciter for a hydroelectric generator. This is done through (more)

Nland, Jonas

2013-01-01T23:59:59.000Z

249

Large-scale Excited Electron Molecular Mechanics/Dynamics  

Science Conference Proceedings (OSTI)

Abstract Scope, To simulate large electronically excited systems, we have developed [at the Materials and Process Simulation Center at Caltech] a molecular...

250

DOE-HDBK-1016/2-93; DOE Fundamentals Handbook Engineering Symbology, Prints, and Drawings Volume 2 of 2  

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

6/2-93 6/2-93 JANUARY 1993 DOE FUNDAMENTALS HANDBOOK ENGINEERING SYMBOLOGY, PRINTS, AND DRAWINGS Volume 2 of 2 U.S. Department of Energy FSC-6910 Washington, D.C. 20585 Distribution Statement A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN 37831. Available to the public from the National Technical Information Services, U.S. Department of Commerce, 5285 Port Royal., Springfield, VA 22161. Order No. DE93012181 DOE-HDBK-1016/2-93 ENGINEERING SYMBOLOGY, PRINTS, AND DRAWINGS ABSTRACT The Engineering Sym bology, Prints, and Drawings Handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and technical

251

DOE-HDBK-1016/1-93; DOE Fundamentals Handbook Engineering Symbology, Prints, and Drawings Volume 1 of 2  

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

016/1-93 016/1-93 JANUARY 1993 DOE FUNDAMENTALS HANDBOOK ENGINEERING SYMBOLOGY, PRINTS, AND DRAWINGS Volume 1 of 2 U.S. Department of Energy FSC-6910 Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN37831. Available to the public from the National Technical Information Service, U.S. Department of Commerce, 5285 Port Royal Rd., Springfield, VA 22161. Order No. DE93012220 DOE-HDBK-1016/1-93 ENGINEERING SYMBOLOGY, PRINTS, AND DRAWINGS ABSTRACT The Engineering Sym bology, Prints, and Drawings Handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and

252

Excited State Spectroscopy in the Lattice Gross-Neveu Model  

E-Print Network (OSTI)

We present preliminary results of an excited state spectroscopy calculation in the 2-d lattice Gross-Neveu model. We address the construction of suitable interpolators for the variational method and their overlap with excitations. We comment on the role of the eigenvectors as a tool for matching scattering states on lattices with different volumes.

Julia Danzer; Christof Gattringer

2007-10-09T23:59:59.000Z

253

Elementary excitations of liquid 4 He in aerogel  

E-Print Network (OSTI)

Elementary excitations of liquid 4 He in aerogel O. Plantevin and B. Fa°k Commissariat a` l-roton excitations of liquid 4 He immersed in aerogel of 95% porosity have been measured using inelastic neutron.25 K. Aerogel grown with deuterated materials not exposed to air was used and measure- ments in bulk

Glyde, Henry R.

254

Analysis of wound rotor self-excited induction generators  

Science Conference Proceedings (OSTI)

Self-excited induction generators are found to be to be most suitable machines for wind energy conversion in remote and windy areas due to several advantages over grid connected machines. Such machine exhibits poor performance in terms of voltage and ... Keywords: induction generator, renewable generation, self-excited induction generator, steady state analysis (SSA), wind energy generation

K. S. Sandhu; S. P. Jain

2008-01-01T23:59:59.000Z

255

Electronic and Nuclear Factors in Charge and Excitation Transfer  

DOE Green Energy (OSTI)

We report the and/or state of several subprojects of our DOE sponsored research on Electronic and Nuclear Factors in Electron and Excitation Transfer: (1) Construction of an ultrafast Ti:sapphire amplifier. (2) Mediation of electronic interactions in host-guest molecules. (3) Theoretical models of electrolytes in weakly polar media. (4) Symmetry effects in intramolecular excitation transfer.

Piotr Piotrowiak

2004-09-28T23:59:59.000Z

256

Multiple excitation regenerative amplifier inertial confinement system  

DOE Patents (OSTI)

The invention relates to apparatus and methods for producing high intensity laser radiation generation which is achieved through an optical amplifier-storage ring design. One or two synchronized, counterpropagating laser pulses are injected into a regenerative amplifier cavity and amplified by gain media which are pumped repetitively by electrical or optical means. The gain media excitation pulses are tailored to efficiently amplify the laser pulses during each transit. After the laser pulses have been amplified to the desired intensity level, they are either switched out of the cavity by some switch means, as for example an electro-optical device, for any well known laser end uses, or a target means may be injected into the regenerative amplifier cavity in such a way as to intercept simultaneously the counterpropagating laser pulses. One such well known end uses to which this invention is intended is for production of high density and temperature plasmas suitable for generating neutrons, ions and x-rays and for studying matter heated by high intensity laser radiation. 11 figs.

George, V.E.; Haas, R.A.; Krupke, W.F.; Schlitt, L.G.

1980-05-27T23:59:59.000Z

257

Shaped excitation current for synchrotron magnets  

Science Conference Proceedings (OSTI)

A 500-MeV synchrotron at Argonne National Laboratory (ANL) operates at 30 Hz with its beam spill locked to neutron choppers with a precision of +- 0.5 ..mu..s. The average beam will be increased by running the magnets at 45 Hz. Three 45-Hz circuits are discussed which differ greatly in overall cost and complexity. The first is a conventional 45-Hz sine wave circuit. The reduction in time for beam acceleration results in a costly increase in peak rf power. This problem is avoided in the other two circuits by making the field rise slowly and fall rapidly. The second circuit discussed is resonant at 45 Hz and 90 Hz. Exciting this circuit with a mixture of dc, 45 Hz, and 90 Hz can produce a magnetic field with the same maximum dB/dt as the present 30-Hz field. A third, and possibly least expensive, solution is a novel circuit which produces 30 Hz during acceleration and 90 Hz when the magnets are reset. The rf requirements are, of course, identical to present requirements during acceleration. Circuit details are given.

Foss, M.; Praeg, W.

1981-01-01T23:59:59.000Z

258

Multiple excitation regenerative amplifier inertial confinement system  

DOE Patents (OSTI)

The invention relates to apparatus and methods for producing high intensity laser radiation generation which is achieved through an optical amplifier-storage ring design. One or two synchronized, counterpropagating laser pulses are injected into a regenerative amplifier cavity and amplified by gain media which are pumped repetitively by electrical or optical means. The gain media excitation pulses are tailored to efficiently amplify the laser pulses during each transit. After the laser pulses have been amplified to the desired intensity level, they are either switched out of the cavity by some switch means, as for example an electro-optical device, for any well known laser end uses, or a target means may be injected into the regenerative amplifier cavity in such a way as to intercept simultaneously the counterpropagating laser pulses. One such well known end uses to which this invention is intended is for production of high density and temperature plasmas suitable for generating neutrons, ions and x-rays and for studying matter heated by high intensity laser radiation.

George, Victor E. (Livermore, CA); Haas, Roger A. (Pleasanton, CA); Krupke, William F. (Pleasanton, CA); Schlitt, Leland G. (Livermore, CA)

1980-01-01T23:59:59.000Z

259

Inkjet printing and low power laser annealing of silver nanoparticle traces for the realization of low resistivity lines for flexible electronics  

Science Conference Proceedings (OSTI)

We report on the realization of low resistance silver lines by inkjet printing of a commercial silver-based ink on a flexible kapton substrate and subsequent low energy laser annealing to promote nanoparticle coalescence. Our approach resulted in low ... Keywords: Flexible electronics, Inkjet printing, Laser annealing, Thin films

A. Chiolerio; G. Maccioni; P. Martino; M. Cotto; P. Pandolfi; P. Rivolo; S. Ferrero; L. Scaltrito

2011-08-01T23:59:59.000Z

260

Minimum/maximum excitation limiter performance goals for small generation  

SciTech Connect

Small generators connected to the utility system often act as followers as they tend to follow system bus voltage variations. For the lack of kVA capacity, small machines tend to be susceptible to becoming over or under excited (excessive Vars in or Vars out of the generator) as the voltage regulator tries to maintain its setpoint with variations in system bus voltage. Minimum and maximum excitation limiters are utilized to limit the voltage regulator characteristic response to system bus voltage changes, that can otherwise result in machine overheating and/or pulling out of synchronization. This paper reviews the operating performance of minimum and maximum excitation limiters used on small machines, and provides the user typical performance expectations. The examples will highlight both main field and exciter field applications. Lastly, conditions will be reviewed that may occur during excitation limiter initial startup that can affect their ability to be initially tuned.

Eberly, T.W.; Schaefer, R.C.

1995-12-01T23:59:59.000Z

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


261

Browse Societies by Language -- E-print Network Societies by Language:  

Office of Scientific and Technical Information (OSTI)

German German The following scientific society websites represent research and development interests that are within the E-print Network scope. They communicate primarily in German. Some may have English content on the linking pages. In addition, some of these societies may also provide electronic publications and/or information concerning scientific literature published in German. The intent of this compilation is to provide an easy entry point into these scientific communities to encourage the formation of personal contacts among researchers pursuing similar interests. You are currently viewing the page that provides access to German language societies. If you wish to view societies in another language, please select from the following options. Chinese Dutch English

262

Browse Societies by Language -- E-print Network Societies by Language:  

Office of Scientific and Technical Information (OSTI)

Italian Italian The following scientific society websites represent research and development interests that are within the E-print Network scope. They communicate primarily in Italian. Some may have minimal English content on the linking pages. In addition, some of these societies may also provide electronic publications and/or information concerning scientific literature published in Italian. The intent of this compilation is to provide an easy entry point into these scientific communities to encourage the formation of personal contacts among researchers pursuing similar interests. You are currently viewing the page that provides access to Italian language societies. If you wish to view societies in another language, please select from the following options. Chinese

263

Printed circuit board impedance matching step for microwave (millimeter wave) devices  

SciTech Connect

An impedance matching ground plane step, in conjunction with a quarter wave transformer section, in a printed circuit board provides a broadband microwave matching transition from board connectors or other elements that require thin substrates to thick substrate (>quarter wavelength) broadband microwave (millimeter wave) devices. A method of constructing microwave and other high frequency electrical circuits on a substrate of uniform thickness, where the circuit is formed of a plurality of interconnected elements of different impedances that individually require substrates of different thicknesses, by providing a substrate of uniform thickness that is a composite or multilayered substrate; and forming a pattern of intermediate ground planes or impedance matching steps interconnected by vias located under various parts of the circuit where components of different impedances are located so that each part of the circuit has a ground plane substrate thickness that is optimum while the entire circuit is formed on a substrate of uniform thickness.

Pao, Hsueh-Yuan; Aguirre, Jerardo; Sargis, Paul

2013-10-01T23:59:59.000Z

264

Browse Societies by Language -- E-print Network Societies by Language:  

Office of Scientific and Technical Information (OSTI)

Other Other The following scientific society websites represent research and development interests that are within the E-print Network scope, but are in a language not found on one of the other lists of Scientific Societies. These sites may have some minimal English content on the linking pages. In addition, some of these societies may also provide electronic publications and/or information concerning scientific literature published in alternative languages. The intent of this compilation is to provide an easy entry point into these scientific communities to encourage the formation of personal contacts among researchers pursuing similar interests. You are currently viewing the page that provides access to societies in languages other than one of the primary languages. If you wish to view

265

Browse Societies by Language -- E-print Network Societies by Language:  

Office of Scientific and Technical Information (OSTI)

French French The following scientific society websites represent research and development interests that are within the E-print Network scope. They communicate in French. Some may have minimal English content on the linking pages. In addition, some of these societies may also provide electronic publications and/or information concerning scientific literature published in French. The intent of this compilation is to provide an easy entry point into these scientific communities to encourage the formation of personal contacts among researchers pursuing similar interests. You are currently viewing the page that provides access to French language societies. If you wish to view societies in another language, please select from the following options. Chinese Dutch English

266

Browse Societies by Language -- E-print Network Societies by Language:  

Office of Scientific and Technical Information (OSTI)

Dutch Dutch The following scientific society websites represent research and development interests that are within the E-print Network scope. They communicate primarily in Dutch. Some may have English content on the linking pages. In addition, some of these societies may also provide electronic publications and/or information concerning scientific literature published in Dutch. The intent of this compilation is to provide an easy entry point into these scientific communities to encourage the formation of personal contacts among researchers pursuing similar interests. You are currently viewing the page that provides access to Dutch language societies. If you wish to view societies in another language, please select from the following options. Chinese English French

267

Browse Societies by Language -- E-print Network Societies by Language:  

Office of Scientific and Technical Information (OSTI)

Nordic Nordic The following scientific society websites represent research and development interests that are within the E-print Network scope. They communicate primarily in one of the Nordic languages. Some may have minimal English content on the linking pages. Some of these societies may also provide electronic publications and/or information concerning scientific literature published in Nordic languages. The intent of this compilation is to provide an easy entry point into these communities in the Nordic region and to encourage the formation of personal contacts among researchers pursuing similar interests. You are currently viewing the page that provides access to Nordic language societies. If you wish to view societies in another language, please select from the following options.

268

Browse by Discipline -- E-print Network Subject Pathways: Fission and  

Office of Scientific and Technical Information (OSTI)

H I J K L M N O P Q R S H I J K L M N O P Q R S T U V W X Y Z Hale, Piers J. (Piers J. Hale) - Department of the History of Science, University of Oklahoma Halvorson, Hans (Hans Halvorson) - Department of Philosophy, Princeton University Hammer, David (David Hammer) - Departments of Education & Physics and Astronomy, Tufts University Hansen, James E. (James E. Hansen) - Goddard Institute for Space Studies Harnad, Stevan (Stevan Harnad) - E-Prints on Cognitive Psychology & School of Electronics and Computer Science, University of Southampton Harrell, Mara (Mara Harrell) - Department of Philosophy, Carnegie Mellon University Harrington, Jonathan (Jonathan Harrington) - Institut für Phonetik und Sprachverarbeitung, Ludwig-Maximilians-Universität München

269

Browse Societies by Language -- E-print Network Societies by Language:  

Office of Scientific and Technical Information (OSTI)

English English The following scientific society websites represent research and development interests that are within the E-print Network scope. They communicate primarily in English. In addition, some of these societies may also provide electronic publications and/or information concerning scientific literature published in English. The intent of this compilation is to provide an easy entry point into these scientific communities to encourage the formation of personal contacts among researchers pursuing similar interests. You are currently viewing the page that provides access to English language societies. If you wish to view societies in another language, please select from the following options. Chinese Dutch French German Italian Japanese Nordic Russian Spanish and Portuguese

270

Browse Societies by Language -- E-print Network Societies by Language:  

Office of Scientific and Technical Information (OSTI)

Spanish and Portuguese Spanish and Portuguese The following scientific society websites represent research and development interests that are within the E-print Network scope. They communicate primarily in Spanish, Portuguese, or Catalan. Some may have minimal English content on the linking pages. In addition, some of these societies may also provide electronic publications and/or information concerning scientific literature published in Spanish, Portuguese, or Catalan. The intent of this compilation is to provide an easy entry point into these scientific communities to encourage the formation of personal contacts among researchers pursuing similar interests. You are currently viewing the page that provides access to Spanish and Portuguese language societies. If you wish to view societies in another

271

Browse Societies by Language -- E-print Network Societies by Language:  

Office of Scientific and Technical Information (OSTI)

Chinese Chinese The following scientific society websites represent research and development interests that are within the E-print Network scope. They communicate primarily in Chinese. Some may have minimal English content on the linking pages. In addition, some of these societies may also provide electronic publications and/or information concerning scientific literature published in Chinese. The intent of this compilation is to provide an easy entry point into these scientific communities to encourage the formation of personal contacts among researchers pursuing similar interests. You are currently viewing the page that provides access to Chinese language societies. If you wish to view societies in another language, please select from the following options. Dutch

272

Low AC Loss YBCO Coated Conductor Geometry by Direct Inkjet Printing  

Science Conference Proceedings (OSTI)

The second generation (2G) high temperature superconductors (HTS) wire offers potential benefits for many electric power applications, including ones requiring filamentized conductors with low ac loss, such as transformers and fault current limiters. However, the use of 2G wire in these applications requires the development of both novel multi-filamentary conductor designs with lower ac losses and the development of advanced manufacturing technologies that enable the low-cost manufacturing of these filamentized architectures. This Phase I SBIR project focused on testing inkjet printing as a potential low-cost, roll-to-roll manufacturing technique to fabricate potential low ac loss filamentized architectures directly on the 2G template strips.

Rupich, Martin, Dr. [American Superconductor Corporation; Duckworth, Robert, Dr. [Oak Ridge National Laboratory

2009-10-01T23:59:59.000Z

273

Method for formation of high quality back contact with screen-printed local back surface field  

SciTech Connect

A thin silicon solar cell having a back dielectric passivation and rear contact with local back surface field is described. Specifically, the solar cell may be fabricated from a crystalline silicon wafer having a thickness from 50 to 500 micrometers. A barrier layer and a dielectric layer are applied at least to the back surface of the silicon wafer to protect the silicon wafer from deformation when the rear contact is formed. At least one opening is made to the dielectric layer. An aluminum contact that provides a back surface field is formed in the opening and on the dielectric layer. The aluminum contact may be applied by screen printing an aluminum paste having from one to 12 atomic percent silicon and then applying a heat treatment at 750 degrees Celsius.

Rohatgi, Ajeet (Marietta, GA); Meemongkolkiat, Vichai (Atlanta, GA)

2010-11-30T23:59:59.000Z

274

Wellcome Collection's First Major Temporary Exhibition ...Leonardo da Vinci Drawings, Andy Warhol Prints, Live Heart Surgery, Sacred Heart  

E-Print Network (OSTI)

The Heart Wellcome Collection's First Major Temporary Exhibition ...Leonardo da Vinci Drawings, Andy Warhol Prints, Live Heart Surgery, Sacred Heart Imagery Never Before Seen In Europe, Egyptian Book of the Dead, Foundling Cards, Venous Anatomy Tables... - The Heart book announced; writers include Jonathan

Maizels, Rick

275

Dynamics of Atmospheres and Oceans, 7 (1983) 95-109 Elsevier Scientific Publishing Company, Amsterdam -Printed in The Netherlands  

E-Print Network (OSTI)

into the ocean on an 8° ? 10° grid. Assuming no net annual heat storage, the annual surface heat fluxes into any, Amsterdam - Printed in The Netherlands 95 ANNUAL OCEANIC HEAT TRANSPORTS COMPUTED FROM AN ATMOSPHERIC MODEL 24, 1982) ABSTRACT Miller, J.R., Russell, G.L. and Tsang, L.-C., 1983. Annual oceanic heat transports

Fridlind, Ann

276

MECHANICS OF SOLIDS [published as a section of the article on MECHANICS in the 1993 printing of the  

E-Print Network (OSTI)

MECHANICS OF SOLIDS [published as a section of the article on MECHANICS in the 1993 printing INTRODUCTION The application of the principles of mechanics to bulk matter is conventionally divided into the mechanics of fluids and the mechanics of solids. The entire subject is often called continuum mechanics

277

energy.gov -Speeches (Print Version) Tuesday, February 4, 2003 http://www.energy.gov/HQDocs/speeches/2003/febss/  

E-Print Network (OSTI)

energy.gov - Speeches (Print Version) Tuesday, February 4, 2003 http://www.energy.gov/HQDocs/speeches/2003/febss/ 04BudgetPressConferenceRemarks_v.html Page: 1 Press Conference Remarks Energy Secretary Spencer Abraham 2004 DOE Budget Submission Forrestal Building Washington, DC February 3, 2003 Thank you

278

Last printed 3/16/2004 3:01 PM High-Frequency (Light) Borehole-Radar System  

E-Print Network (OSTI)

Last printed 3/16/2004 3:01 PM High-Frequency (Light) Borehole-Radar System Ramac from Mala Geoscience Packing List 1) Radar control unit (Ramac surface GPR system) (Old or New CU2 is O.K.). 2) Laptop computer with acquisition software, manuals, logbook and protocol sheets. 3) Backup system; zip, jaz, or CD

Barrash, Warren

279

Electrical Characterization of Printed Nanocrystalline Silicon Films, Cooperative Research and Development Final Report, CRADA Number CRD-07-00241  

DOE Green Energy (OSTI)

This CRADA helped Innovalight characterize and quantify their ink-based selective emitter technology. Controlled localized doping of selective emitter structures via Innovalight Silicon Ink technology was demonstrated. Both secondary ion mass spectrometry and scanning capacitance microscopy revealed; abrupt lateral dopant profiles at ink-printed boundaries. Uniform doping of iso- and pyramidal surfaces was also verified using scanning electron microscopy dopant contrast imaging.

Young, D.

2011-05-01T23:59:59.000Z

280

Annals of Nuclear Eneroy, Vol. 7. pp. 171 to 183 Pergamon Press Ltd. 1980. Printed in Great Britain  

E-Print Network (OSTI)

slab reactor in the modified one-group theory, and subsequently, the neutronresponse to twoAnnals of Nuclear Eneroy, Vol. 7. pp. 171 to 183 Pergamon Press Ltd. 1980. Printed in Great Britain I. P.~ZSIT*and G. TH. ANALYTIS~ Department of Nuclear Engineering,Queen Mary College,Mile End Road

Pázsit, Imre

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


281

Annals of Nuclear Energy, Vol. 7, pp. 535 to 539 Pergamon Press Ltd. 1980. Printed in Great Britain  

E-Print Network (OSTI)

ON MULTI-MEDIA CALCULATIONS IN THE THEORY OF NEUTRON DIFFUSION J. R. MAIORINO* and C. E. SIEWERT NuclearAnnals of Nuclear Energy, Vol. 7, pp. 535 to 539 Pergamon Press Ltd. 1980. Printed in Great Britain) Abstract--The FN method is used to solve the critical problem for a three-region reactor and to compute

Siewert, Charles E.

282

Sequential Printing by Laser-Induced Forward Transfer To Fabricate a Polymer Light-Emitting Diode Pixel  

E-Print Network (OSTI)

Sequential Printing by Laser-Induced Forward Transfer To Fabricate a Polymer Light-Emitting Diode-1015, Lausanne, Switzerland ABSTRACT: Patterned deposition of polymer light-emitting diode (PLED Organic light-emitting diodes (OLEDs) have been investigated in detail for nearly a quarter of a century,1

283

Red-green-blue polymer light-emitting diode pixels printed by optimized laser-induced forward transfer  

E-Print Network (OSTI)

Red-green-blue polymer light-emitting diode pixels printed by optimized laser-induced forward tri-color organic light-emitting diode (OLED) pixels. At reduced pressures, and with a defined donor already been used to fabricate basic small-molecule organic light-emitting diodes (OLEDs)2,3 and polymeric

284

Smart infrastructure for carbon foot print analysis of Electric Vehicles V Suresh, G Hill, Prof P T Blythe  

E-Print Network (OSTI)

Smart infrastructure for carbon foot print analysis of Electric Vehicles V Suresh, G Hill, Prof P of electric vehicles through on-road testing, user led trials and the analysis of the data collected from, trip profile, auxiliary loads and driving styles to determine how the battery discharges and recharges

Newcastle upon Tyne, University of

285

Pre-Print Version Impaired Control of Effector T cells by Regulatory T Cells: a Clue to Loss of Oral  

E-Print Network (OSTI)

and to controls. Conclusion. Our results indicate that effector T lymphocytes from active CD become resistant of CD4+CD25+FOXP3+ LPL were significantly increased in patients with active CD, proliferation and IFNPre-Print Version 1 Impaired Control of Effector T cells by Regulatory T Cells: a Clue to Loss

Paris-Sud XI, Université de

286

PLASMA WAKE EXCITATION BY LASERS OR PARTICLE BEAMS  

SciTech Connect

Plasma accelerators may be driven by the ponderomotive force of an intense laser or the space-charge force of a charged particle beam. Plasma wake excitation driven by lasers or particle beams is examined, and the implications of the different physical excitation mechanisms for accelerator design are discussed. Plasma-based accelerators have attracted considerable attention owing to the ultrahigh field gradients sustainable in a plasma wave, enabling compact accelerators. These relativistic plasma waves are excited by displacing electrons in a neutral plasma. Two basic mechanisms for excitation of plasma waves are actively being researched: (i) excitation by the nonlinear ponderomotive force (radiation pressure) of an intense laser or (ii) excitation by the space-charge force of a dense charged particle beam. There has been significant recent experimental success using lasers and particle beam drivers for plasma acceleration. In particular, for laser-plasma accelerators (LPAs), the demonstration at LBNL in 2006 of high-quality, 1 GeV electron beams produced in approximately 3 cm plasma using a 40 TW laser. In 2007, for beam-driven plasma accelerators, or plasma-wakefield accelerators (PWFAs), the energy doubling over a meter to 42 GeV of a fraction of beam electrons on the tail of an electron beam by the plasma wave excited by the head was demonstrated at SLAC. These experimental successes have resulted in further interest in the development of plasma-based acceleration as a basis for a linear collider, and preliminary collider designs using laser drivers and beam drivers are being developed. The different physical mechanisms of plasma wave excitation, as well as the typical characteristics of the drivers, have implications for accelerator design. In the following, we identify the similarities and differences between wave excitation by lasers and particle beams. The field structure of the plasma wave driven by lasers or particle beams is discussed, as well as the regimes of operation (linear and nonlinear wave). Limitations owing to driver emittance are also discussed.

Schroeder, Carl B.; Esarey, Eric; Benedetti, Carlo; Toth, Csaba; Geddes, Cameron; Leemans, Wim

2011-04-01T23:59:59.000Z

287

Time-resolved Hyperspectral Fluorescence Spectroscopy using Frequency Modulated Excitation  

SciTech Connect

An intensity-modulated excitation light source is used together with a micro channel plate intensified CCD (ICCD) detector gated at a slightly different frequency to generate a beat frequency from a fluorescent sample. The addition of a spectrograph produces a hyperspectral time-resolved data product where the resulting beat frequency is detected with a low frame rate camera. Measuring the beat frequency of the spectrum as a function of time allows separation of the excited fluorescence from ambient constant light sources. The excitation and detector repetition rates are varied over a range of discrete frequencies, and the phase shift of the beat wave maps out the emission decay rate(s).

,; Neill, M

2012-07-01T23:59:59.000Z

288

Theoretical Assessment of 178m2Hf De-Excitation  

Science Conference Proceedings (OSTI)

This document contains a comprehensive literature review in support of the theoretical assessment of the {sup 178m2}Hf de-excitation, as well as a rigorous description of controlled energy release from an isomeric nuclear state.

Hartouni, E P; Chen, M; Descalle, M A; Escher, J E; Loshak, A; Navratil, P; Ormand, W E; Pruet, J; Thompson, I J; Wang, T F

2008-10-06T23:59:59.000Z

289

Optimal excitation of interannual atlantic meridional overturning circulation variability  

E-Print Network (OSTI)

The optimal excitation of Atlantic meridional overturning circulation (MOC) anomalies is investigated in an ocean general circulation model with an idealized configuration. The optimal three-dimensional spatial structure ...

Zanna, Laure

290

Excitation and readout Designs for high field spectroscopic imaging  

E-Print Network (OSTI)

In this thesis we state and demonstrate solutions to three engineering problems that arise in magnetic resonance imaging RF excitation with parallel transmission (pTx) and magnetic resonance spectroscopic imaging (MRSI). ...

Lee, Joonsung

2011-01-01T23:59:59.000Z

291

On the use of the reorientation effect in Coulomb excitation  

SciTech Connect

We report on the use of the reorientation effect in Coulomb excitation to study the quadrupole moment of the 2{sub 1}{sup +} state of neutron-rich nuclei with mass A{approx} 80.

Padilla-Rodal, E. [Instituto de Ciencias Nucleares, UNAM, 04510, Mexico City (Mexico)

2013-04-19T23:59:59.000Z

292

Low Energy INTEGRAL Positrons from eXciting Dark Matter  

E-Print Network (OSTI)

The origin of the e^+e^- 511 keV line observed by INTEGRAL remains unclear. The rate and morphology of the signal have prompted questions as to whether dark matter could play a role. We explore the case of dark matter upscattering in the framework of eXciting Dark Matter (XDM), where WIMPs \\chi, interacting through a new dark force, scatter into excited states \\chi*, which subsequently emit e^+e^- pairs when they de-excite. We numerically compute the cross sections for two Yukawa-coupled DM particles upscattering into excited states, specifically considering variations motivated by recent N-body simulations with additional baryonic physics. We find that that l>0 components of the partial-wave decomposition are often significant contributions to the total cross section and that for reasonable ranges of parameters dark matter can produce the ~10^43 e^+/s observed by INTEGRAL.

Rob Morris; Neal Weiner

2011-09-17T23:59:59.000Z

293

The WavenumberFrequency Content of Resonantly Excited Equatorial Waves  

Science Conference Proceedings (OSTI)

The theoretical resonant excitation of equatorial inertiagravity waves and mixed Rossbygravity waves is examined. Contrary to occasionally published expectations, solutions show that winds that are broadband in both zonal wavenumber and ...

Theodore S. Durland; J. Thomas Farrar

2012-11-01T23:59:59.000Z

294

Inorganic volumetric light source excited by ultraviolet light  

DOE Patents (OSTI)

The invention relates to a composition for the volumetric generation of radiation. The composition comprises a porous substrate loaded with a component capable of emitting radiation upon interaction with an exciting radiation. Preferably, the composition is an aerogel substrate loaded with a component, e.g., a phosphor, capable of interacting with exciting radiation of a first energy, e.g., ultraviolet light, to produce radiation of a second energy, e.g., visible light. 4 figures.

Reed, S.; Walko, R.J.; Ashley, C.S.; Brinker, C.J.

1994-04-26T23:59:59.000Z

295

Resonant excitation of coherent Cerenkov radiation in dielectric lined waveguides  

Science Conference Proceedings (OSTI)

We report the observation of coherent Cerenkov radiation in the terahertz regime emitted by a relativistic electron pulse train passing through a dielectric lined cylindrical waveguide. We describe the beam manipulations and measurements involved in repetitive pulse train creation including comb collimation and nonlinear optics corrections. With this technique, modes beyond the fundamental are selectively excited by use of the appropriate frequency train. The spectral characterization of the structure shows preferential excitation of the fundamental and of a higher longitudinal mode.

Andonian, G.; Williams, O.; Wei, X.; Niknejadi, P.; Hemsing, E.; Rosenzweig, J. B. [Department of Physics and Astronomy, University of California, Los Angeles, Los Angeles, California 90095 (United States); Muggli, P. [University of Southern California, Los Angeles, California 90089 (United States); Babzien, M.; Fedurin, M.; Kusche, K.; Malone, R.; Yakimenko, V. [Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973 (United States)

2011-05-16T23:59:59.000Z

296

Excited and exotic charmonium spectroscopy from lattice QCD  

Science Conference Proceedings (OSTI)

We study the charmonium spectrum in full QCD on anisotropic lattices generated by Hadron Spectrum Collaboration. We adopt a large basis of interpolating operators to extract the excited charmonium states using the variational method. A detailed spectrum of excited charmonium mesons in many J{sup PC} channels is obtained. Some exotic hybrid states ( with J{sup PC} = 0{sup +-} , 1{sup -+} , 2{sup +-}) are also studied

Liu, L; Peardon, M J; Ryan, S M; Thomas, C; Vilaseca, P; Dudek, J; Edwards, R; Joo, B

2012-12-01T23:59:59.000Z

297

Inorganic volumetric light source excited by ultraviolet light  

DOE Patents (OSTI)

The invention relates to a composition for the volumetric generation of radiation. The composition comprises a porous substrate loaded with a component capable of emitting radiation upon interaction with an exciting radiation. Preferably, the composition is an aerogel substrate loaded with a component, e.g., a phosphor, capable of interacting with exciting radiation of a first energy, e.g., ultraviolet light, to produce radiation of a second energy, e.g., visible light.

Reed, Scott (Albuquerue, NM); Walko, Robert J. (Albuquerue, NM); Ashley, Carol S. (Albuquerue, NM); Brinker, C. Jeffrey (Albuquerue, NM)

1994-01-01T23:59:59.000Z

298

Excitation of simple atoms by slow magnetic monopoles  

DOE Green Energy (OSTI)

We present a theory of excitation of simple atoms by slow moving massive monopoles. Previously presented results for a monopole of Dirac strength on hydrogen and helium are reviewed. The hydrogen theory is extended to include arbitrary integral multiples of the Dirac pole strength. The excitation of helium by double strength poles and by dyons is also discussed. It is concluded that a helium proportional counter is a reliable and effective detector for monopoles of arbitrary strength, and for negatively charged dyons.

Kroll, N.M.; Parke, S.J.; Ganapathi, V.; Drell, S.D.

1984-01-01T23:59:59.000Z

299

Measurement of the 208Pb(52Cr, n)259Sg Excitation Function  

E-Print Network (OSTI)

of other measured cold fusion excitation functions (see Fig.in agreement with other cold fusion excitation functions,+b I. INTRODUCTION Cold nuclear fusion reactions, using Pb

Folden III, C.M.

2010-01-01T23:59:59.000Z

300

Process uniformity for plasma etchback and desmear in printed wiring board manufacturing  

SciTech Connect

In the manufacture of printed wiring boards (PWB), plasma etchback and desmear processes facilitate the making of good mechanical and electrical bonds of copper inner layers to copper plating. Without sufficient plasma treatment, internal layer copper features receive inadequate polymer removal which results in circuit discontinuity during the plating process. Additionally, the plasma serves to roughen the polymer wall of drilled holes which improves copper adhesion. To ensure proper plasma treatment, careful adherence to strict production guidelines is essential. These guidelines include attention to several critical criteria in placement, pretreatment and treatment of the PWBs during the plasma process; process verification via post plasma testing; and careful process monitoring throughout. In this brief, some guidelines for process monitoring and control will be discussed. A description of a new plasma monitor utilizing optical emission spectroscopy (OES), developed cooperatively between Sandia National Laboratories, National Consortium for Manufacturing Sciences (NCMS) and Texas Instruments Inc., will be discussed along with possible benefits derived from in situ monitoring of plasma systems.

Ward, P.P.; Smith, M.L.; Stevenson, J.O. [Sandia National Labs., Albuquerque, NM (United States); Smedley, R. [Texas Instruments, Austin, TX (United States)

1996-08-01T23:59:59.000Z

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


301

The influence of temperature and humidity on the wettability of immersion tin coated printed wiring boards  

SciTech Connect

This paper investigates the merits and drawbacks of immersion tin coatings as potential printed wiring board (PWB) surface finishes. Immersion tin films applied in various thicknesses (0.2 to 2 {mu}m) to different copper substrates were characterized relative to thermal stability and shelflife. Thermal excursions included those typical in mixed technology assembly processes. Exposure to temperature/humidity was varied from near ambient (35{degree}C/85%RH) to harsh (steam aging). A minimum thickness of {approximately}60{mu}in (1.5{mu}m) was determined to be critical for assembly operations involving multiple thermal excursions. Even though formation of Cu-Sn intermetallic compounds (IMC) is facile, at the copper-tin interface, these compounds do not adversely affect the soldering performance, as long as the IMC phase is protected by a tin surface layer. Immersion tin finishes are relatively stable to thermal exposure, but are readily oxidized in the presence of humidity. This oxide growth is directly responsible for solderability degradation. The underlying copper substrate was also found to have a significant impact on the thermal stability of tin films. An electroless copper substrate caused significantly more intermetallic formation, that resulted in poor solderability even under moderate temperature, humidity conditions.

Ray, U.; Artaki, I. [AT and T Bell Labs., Princeton, NJ (United States); Vianco, P.T. [Sandia National Labs., Albuquerque, NM (United States)

1993-12-31T23:59:59.000Z

302

Jetting, In-Nozzle Meniscus Motion and Nozzle-Plate Flooding in an Industrial Drop-on-Demand Print Head  

E-Print Network (OSTI)

-up of fluid in an annulus around the nozzle (flooding rate) has been characterized and compared with models for the net ink flow through the nozzle. Introduction In a commercial drop-on-demand (DOD) inkjet print head, the ink meniscus at nozzles... . The flash, focused by a condenser, illuminates the nozzles about 21 degrees off-axis from the opposite direction. The arrangement is configured to maximize the illumination reaching the camera lens within the space constraints. A protective glass plate...

Hsiao, W.-K.; Hoath, S.D.; Martin, G.D.; Hutchings, I.M.

2011-01-01T23:59:59.000Z

303

Systematic Study of Fission Barriers of Excited Superheavy Nuclei  

E-Print Network (OSTI)

A systematic study of fission-barrier dependence on excitation energy has been performed using the self-consistent finite-temperature Hartree-Fock+BCS (FT-HF+BCS) formalism with the SkM* Skyrme energy density functional. The calculations have been carried out for even-even superheavy nuclei with Z ranging between 110 and 124. For an accurate description of fission pathways, the effects of triaxial and reflection-asymmetric degrees of freedom have been fully incorporated. Our survey demonstrates that the dependence of isentropic fission barriers on excitation energy changes rapidly with particle number, pointing to the importance of shell effects even at large excitation energies characteristic of compound nuclei. The fastest decrease of fission barriers with excitation energy is predicted for deformed nuclei around N=164 and spherical nuclei around N=184 that are strongly stabilized by ground-state shell effects. For nuclei 240Pu and 256Fm, which exhibit asymmetric spontaneous fission, our calculations predict a transition to symmetric fission at high excitation energies due to the thermal quenching of static reflection asymmetric deformations.

J. A. Sheikh; W. Nazarewicz; J. C. Pei

2009-04-24T23:59:59.000Z

304

Dynamic Coherence in Excitonic Molecular Complexes under Various Excitation Conditions  

E-Print Network (OSTI)

In this paper, we investigate the relevance of dynamic electronic coherence under conditions natural to light-harvesting systems. We formulate the results of a quantum mechanical treatment of a weak light-matter interaction in terms of experimental observable, such as the incident light spectrum and the absorption spectrum of the material, and we derive the description of the incoherent F\\"orster type energy transfer fully from the wave function formalism. We demonstrate that excitation of a coherent superposition of electronic eigenstates of natural light-harvesting complexes by sunlight or by excitation transfer from a neighboring antenna is unlikely and that dynamical coherence therefore cannot play any significant role in natural photosynthesis, regardless of their life time. Dynamical coherence as a transient phenomenon must be strictly distinguished from the effect of excited state delocalization (also termed quantum coherence in the literature) which is established by interaction between the pigments a...

Chenu, Aurlia; Mancal, Tom

2013-01-01T23:59:59.000Z

305

Prioritizing material recovery for end-of-life printed circuit boards  

Science Conference Proceedings (OSTI)

Highlights: Black-Right-Pointing-Pointer Material recovery driven by composition, choice of ranking, and weighting. Black-Right-Pointing-Pointer Economic potential for new recycling technologies quantified for several metrics. Black-Right-Pointing-Pointer Indicators developed for materials incurring high eco-toxicity costs. Black-Right-Pointing-Pointer Methodology useful for a variety of stakeholders, particularly policy-makers. - Abstract: The increasing growth in generation of electronic waste (e-waste) motivates a variety of waste reduction research. Printed circuit boards (PCBs) are an important sub-set of the overall e-waste stream due to the high value of the materials contained within them and potential toxicity. This work explores several environmental and economic metrics for prioritizing the recovery of materials from end-of-life PCBs. A weighted sum model is used to investigate the trade-offs among economic value, energy saving potentials, and eco-toxicity. Results show that given equal weights for these three sustainability criteria gold has the highest recovery priority, followed by copper, palladium, aluminum, tin, lead, platinum, nickel, zinc, and silver. However, recovery priority will change significantly due to variation in the composition of PCBs, choice of ranking metrics, and weighting factors when scoring multiple metrics. These results can be used by waste management decision-makers to quantify the value and environmental savings potential for recycling technology development and infrastructure. They can also be extended by policy-makers to inform possible penalties for land-filling PCBs or exporting to the informal recycling sector. The importance of weighting factors when examining recovery trade-offs, particularly for policies regarding PCB collection and recycling are explored further.

Wang Xue, E-mail: xxw6590@rit.edu [Golisano Institute for Sustainability, Rochester Institute of Technology, 111 Lomb Memorial Drive, Rochester, NY 14623 (United States); Gaustad, Gabrielle, E-mail: gabrielle.gaustad@rit.edu [Golisano Institute for Sustainability, Rochester Institute of Technology, 111 Lomb Memorial Drive, Rochester, NY 14623 (United States)

2012-10-15T23:59:59.000Z

306

Equations of state for self-excited MHD generator studies  

DOE Green Energy (OSTI)

We have constructed a state-of-the-art equation of state (EOS) for argon covering the temperature density range attainable by currently proposed self-excited MHD generators. The EOS for conditions in the flow channel was obtained primarily by a non-ideal plasma code (ACTEX) that is based on a many body activity expansion. For conditions in the driver chamber the EOS was primarily obtained from a fluid code (HDFP) that calculates the fluid properties from perturbation theory based on the insulator interatomic pair potential but including electronic excitations. The results are in agreement with several sets of experimental data in the 0.6 - 91 GPa pressure range.

Rogers, F.J.; Ross, M.; Haggin, G.L.; Wong, L.K.

1980-02-26T23:59:59.000Z

307

Below-bandgap excitation of bulk semiconductors by twisted light  

E-Print Network (OSTI)

I theoretically investigate the response of bulk semiconductors to excitation by twisted light below the energy bandgap. To this end, I modify a well-known model of light-semiconductor interaction to account for the conservation of the light's momentum. I show that the excited states can be thought of as a superposition of slightly perturbed exciton states undergoing a complex center-of-mass motion. In addition, the absorption would occur at a slightly shifted energy (compared to plane waves) and would exhibit complex spatial patterns in the polarization and current.

Quinteiro, G F

2013-01-01T23:59:59.000Z

308

2{sup +} excitation of the {sup 12}C Hoyle state  

Science Conference Proceedings (OSTI)

A high-energy-resolution magnetic spectrometer has been used to measure the {sup 12}C excitation energy spectrum to search for the 2{sup +} excitation of the 7.65 MeV, 0{sup +} Hoyle state. By measuring in the diffractive minimum of the angular distribution for the broad 0{sup +} background, evidence is found for a possible 2{sup +} state at 9.6(1) MeV with a width of 600(100) keV. The implications for the {sup 8}Be+{sup 4}He reaction rate in stellar environments are discussed.

Freer, M. [School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT (United Kingdom); Fujita, H.; Carter, J.; Usman, I. [School of Physics, University of the Witwatersrand, Johannesburg 2050 (South Africa); Buthelezi, Z.; Foertsch, S. V.; Neveling, R.; Perez, S. M.; Smit, F. D. [iThemba LABS, P.O. Box 722, Somerset West 7129 (South Africa); Fearick, R. W. [Physics Department, University of Cape Town, Private Bag, Rondebosch 7700 (South Africa); Papka, P.; Swartz, J. A. [Physics Department, University of Stellenbosch, Private Bag X1, Matieland 7602, Stellenbosch (South Africa)

2009-10-15T23:59:59.000Z

309

Microscopic Black Hole Pairs in Highly-Excited States  

E-Print Network (OSTI)

We consider the quantum mechanics of a system consisting of two identical, Planck-size Schwarzschild black holes revolving around their common center of mass. We find that even in a very highly-excited state such a system has very sharp, discrete energy eigenstates, and the system performs very rapid transitions from a one stationary state to another. For instance, when the system is in the 100th excited state, the life times of the energy eigenstates are of the order of $10^{-30}$ s, and the energies of gravitons released in transitions between nearby states are of the order of $10^{22}$ eV.

J. Makela; P. Repo

2000-06-20T23:59:59.000Z

310

Efficiency of excitation transfer in photosynthesis under quantum coherence  

E-Print Network (OSTI)

We investigate the role of quantum coherence in the efficiency of excitation transfer in a spin-star arrangement of interacting two-level systems, mimicking a light-harvesting antenna connected to a reaction center, similar to a photosynthetic system in nature. By using the quantum jump approach, we show that the efficiency depends intimately on the quantum interference among states in which the excitation is localized on individual sites in the antenna. Our results indicate how efficiency may be used as an indication of quantum coherence in energy transfer.

Olaya-Castro, Alexandra; Fassioli-Olsen, Francesca; Johnson, Neil F

2007-01-01T23:59:59.000Z

311

Dependence of the Vertical Excitation Energy of Benzene on the Size and Force Constant of the Excited State  

SciTech Connect

Griffing1 computed the vertical excitation energy for the first electronic transition of benzene as a function of the carbon-carbon distance (rn) within the Sklar valence bond (SVB) and Goeppert-Mayer and Sklar molecular orbital (G1SMO) methods to evaluate the change on excitation of the carbon-carbon equilibrium internuclear separation (rn0) and of the corresponding stretching force constant, f. While ring expansion was correctly predicted, both methods appeared to predict that f increases on excitation, contrary to experiment. We shall demonstrate a) that Griffing's paradox may be resolved if terms higher than the second power in rn are included in the energy expressions for the states and b) that a Huckel calculation leads to results qualitatively similar to those obtained from the more elaborate calculations.

Ehrenson, S; Wolfsberg, Max

1966-07-22T23:59:59.000Z

312

Nuclear Collective Excitation by a Short Strong Laser Pulse  

E-Print Network (OSTI)

We derive the conditions on the average laser energy and the mean photon number such that a short strong laser pulse causes collective nuclear excitation. We use the Giant Dipole Resonance as a representative example, and a random-matrix description of the fine-structure states and perturbation theory as tools.

Weidenmueller, Hans A

2010-01-01T23:59:59.000Z

313

Excited quark production at a 100 TeV VLHC  

E-Print Network (OSTI)

I look for a dijet resonance produced by an excited quark q* in a simulated sample corresponding to 3 ab^{-1} of pp collisions at $\\sqrt{s} = 100$ TeV. Using a cut and count analysis approach I demonstrate the potential to explore q* masses up to 50 TeV, corresponding to a length scale of around 4 am.

Jacob Anderson

2013-09-03T23:59:59.000Z

314

Excited quark production at a 100 TeV VLHC  

E-Print Network (OSTI)

I look for a dijet resonance produced by an excited quark q* in a simulated sample corresponding to 3 ab^{-1} of pp collisions at $\\sqrt{s} = 100$ TeV. Using a cut and count analysis approach I am able to explore q* masses up to 50 TeV, corresponding to a length scale of around 4 am.

Anderson, Jacob

2013-01-01T23:59:59.000Z

315

Theory and Applications of Coulomb Excitation Carlos Bertulani  

E-Print Network (OSTI)

energy collisions 7 A. Central collisions 7 B. Electric excitations 8 C. Estimates 9 D. Inclusion probabilities and virtual photon numbers 16 C. Historical note: Fermi's forgotten papers 17 D. Spectrum involving halo nuclei 57 4. Nuclear transitions 58 XII. Codes 58 XIII. Appendices 58 A. Decay rates 58 B

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

316

Gravity waves excited by jets: Propagation versus generation R. Plougonven  

E-Print Network (OSTI)

Gravity waves excited by jets: Propagation versus generation R. Plougonven School of Mathematics September 2005. [1] Atmospheric jets are known to be an important source of inertia-gravity waves, yet mechanisms for the gravity waves, with the underlying assumption that the characteristics of the waves were

Plougonven, Riwal

317

Interior Permanent Magnet Reluctance Machine with Brushless Field Excitation  

SciTech Connect

In a conventional permanent magnet (PM) machine, the air-gap flux produced by the PM is fixed. It is difficult to enhance the air-gap flux density due to limitations of the PM in a series-magnetic circuit. However, the air-gap flux density can be weakened by using power electronic field weakening to the limit of demagnetization of the PMs. This paper presents the test results of controlling the PM air-gap flux density through the use of a stationary brushless excitation coil in a reluctance interior permanent magnet with brushless field excitation (RIPM-BFE) motor. Through the use of this technology the air-gap flux density can be either enhanced or weakened. There is no concern with demagnetizing the PMs during field weakening. The leakage flux of the excitation coil through the PMs is blocked. The prototype motor built on this principle confirms the concept of flux enhancement and weakening through the use of excitation coils.

Wiles, R.H.

2005-10-07T23:59:59.000Z

318

Observation of the First Excited State in 23O  

E-Print Network (OSTI)

The first excited state in neutron-rich 23O was observed in a (2p1n) knock-out reaction from 26Ne on a beryllium target at a beam energy of 86 MeV/A. The state is unbound with respect to neutron emission and was reconstructed from the invariant mass from the 22O fragment and the neutron. It is unbound by 45(2) keV corresponding to an excitation energy of 2.8(1) MeV. The non-observation of further resonances implies a predominantly direct reaction mechanism of the employed three-nucleon-removal reaction which suggests the assignment of the observed resonance to be the 5/2+ hole state.

N. Frank; A. Schiller; T. Baumann; D. Bazin; J. Brown; P. A. DeYoung; J. E. Finck; A. Gade; J. Hinnefeld; R. Howes; J. -L. Lecouey; B. Luther; W. A. Peters; H. Scheit; M. Thoennessen

2007-08-20T23:59:59.000Z

319

Nuclear collective excitations in a two-phase coexistence region  

SciTech Connect

The relation between collective modes and phase transitions in nuclear matter is examined. The dispersion relations for the low-lying excitations in a linear approach are evaluated within a Landau-Fermi liquid scheme by assuming coexisting phases in thermodynamical equilibrium. Temperature and isospin composition are used as relevant parameters. The in-medium nuclear interaction is provided by a recently proposed density functional model. The low density liquid-gas phase transition is taken as a typical situation for examination. We found significative modifications in the energy spectrum, within a certain range of temperatures and isospin asymmetry, due to the separation of matter into independent phases. The influence of the electromagnetic interaction over the dispersion relation of these collective excitations is also examined.

Aguirre, R. M.; De Paoli, A. L. [Departamento de Fisica, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, and IFLP, CCT-La Plata, CONICET. Argentina (Argentina)

2011-04-15T23:59:59.000Z

320

Fission process of low excited nuclei with Langevin approach  

E-Print Network (OSTI)

Fragment mass distributions from the fission of U and Pu isotopes at low excitation energies are studied using a dynamical model based on the fluctuation-dissipation theorem formulated as Langevin equations. The present calculations reproduced the overall trend of the asymmetric mass distribution without parameter adjustment for the first time using the Langevin approach. The Langevin trajectories show a complicated time evolution on the potential surface, which causes the time delay of fission, showing that dynamical treatment is vital. It was found that the shell effect of the potential energy landscape has a dominant role in determining the mass distribution, although it is rather insensitive to the strength of dissipation. Nevertheless, it is essential to include the effect of dissipation, since it has a crucial role in giving "fluctuation" to Langevin trajectories as well as for explaining the multiplicities of pre-scission neutrons as the excitation energy increases. Therefore, the present approach can serve as a basis for more refined analysis.

Y. Aritomo; S. Chiba

2013-05-27T23:59:59.000Z

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


321

Photoionization of potassium atoms from the ground and excited states  

Science Conference Proceedings (OSTI)

The Dirac-based B-spline R-matrix method is used to investigate the photoionization of atomic potassium from the 4s ground and 4p, 5s-7s, 3d-5d excited states. The effect of the core polarization by the outer electron is included through the polarized pseudostates. Besides the dipole core polarization, we also found a noticeable influence of the quadrupole core polarization. We obtained excellent agreement with experiment for cross sections of the 4s photoionization, including accurate description of the near-threshold Cooper-Seaton minimum. We also obtained close agreement with experiment for the 4p photoionization, but there are unexpectedly large discrepancies with available experimental data for photoionization of the 5d and 7s excited states.

Zatsarinny, O. [Department of Physics and Astronomy, Drake University, Des Moines, Iowa 50311 (United States); Tayal, S. S. [Department of Physics, Clark Atlanta University, Atlanta, Georgia 30314 (United States)

2010-04-15T23:59:59.000Z

322

Modal parameter extraction from large operating structures using ambient excitation  

DOE Green Energy (OSTI)

A technique called the Natural Excitation Technique or has been developed to response extract response parameters from large operational structure when subjected to random and unmeasured forces such as wind, road noise, aerodynamics, or waves. Six applications of NExT to ambient excitation testing and NExT analysis are surveyed in this paper with a minimum of technical detail. In the first application, NExT was applied to a controlled-yaw Horizontal-Axis Wind Turbine (HAWT). By controlling the yaw degree of freedom an important class of rotating coordinate system effects are reduced. A new shape extraction procedure was applied to this data set with good results. The second application was to a free-yaw HAWT. The complexity of the response has prompted further analytical studies and the development of a specialized visualization package. The third application of NExT was to a parked three-bladed Vertical-Axis Wind Turbine (VAWT) in which traditional modal testing could not excite all modes of interest. The shape extraction process used cross-correlation functions directly in a time-domain shape-fitting routine. The fourth application was to ground transportation systems. Ongoing work to improve driver and passenger comfort in tractor-trailer vehicles and to refine automobile body and tire models will use NExT. NExT has been used to process ambient vibration data for Finite Element Model correlation and is being used to study Structural Health Monitoring with ambient excitation. Shape fitting was performed using amplitude and phase information taken directly from the cross-spectra. The final application is to an offshore structure. This work is on-going, however initial studies have found a high-modal density, high noise content, and sparse data set.

James, G.H. III; Carne, T.G.; Mayes, R.L.

1995-12-31T23:59:59.000Z

323

Spectroscopic probes of vibrationally excited molecules at chemically significant energies  

SciTech Connect

Infrared-optical double resonance is being used to study the unimolecular dissociation dynamics of hydrazoic acid (HN[sub 3]). 6[nu][sub NH] vibrational overtone excitation spectra are given for HN[sub 3]. Work was begun to determine the feasibility of extending the infrared-optical double resonance photofragment spectroscopy to small free radicals, and to be able to monitor atomic dissociation fragments via laser induced fluorescence in the VUV spectrum. 1 fig.

Rizzo, T.R.

1993-04-01T23:59:59.000Z

324

Electron-pair excitations and the molecular Coulomb continuum  

DOE Green Energy (OSTI)

Electron-pair excitations in the molecular hydrogen continuum are described by quantizing rotations of the momentum plane of the electron pair about by the pair's relative momentum. A helium-like description of the molecular pi.Joto double ionization is thus extended to higher angular momenta of the electron pair. A simple three-state superposition is found to account surprisingly well for recent observations of noncoplanar electron-pair, molecular-axis angular distributions.

Colgan, James [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

325

Initial Observations of Sunspot Oscillations Excited by Solar Flare  

E-Print Network (OSTI)

Observations of a large solar flare of December 13, 2006, using Solar Optical Telescope (SOT) on Hinode spacecraft revealed high-frequency oscillations excited by the flare in the sunspot chromosphere. These oscillations are observed in the region of strong magnetic field of the sunspot umbra, and may provide a new diagnostic tool for probing the structure of sunspots and understanding physical processes in solar flares.

Kosovichev, A G

2007-01-01T23:59:59.000Z

326

Comment on Magnetic Monopole Excitations in Spin Ice  

E-Print Network (OSTI)

It has been proposed recently \\cite{son} that excitations in Spin Ice can be of the form of magnetic monopoles that does not obey the Dirac Quantization Condition. It is also well known \\cite{rj} that the above scenario leads to non-associativity among translation generators. It will be interesting to see how the monopole picture in Spin Ice survives in the light of the latter observation.

Subir Ghosh

2008-01-21T23:59:59.000Z

327

Magnetic-field induced screening effect and collective excitations  

SciTech Connect

We explicitly construct the fermion propagator in a magnetic field background B to take the lowest Landau-level approximation. We analyze the energy and momentum dependence in the polarization tensor and discuss the collective excitations. We find there appear two branches of collective modes in one of two transverse gauge particles; one represents a massive and attenuated gauge particle and the other behaves similar to the zero sound at finite density.

Fukushima, Kenji [Department of Physics, Keio University, Kanagawa 223-8522 (Japan)

2011-06-01T23:59:59.000Z

328

Predict-prevent control method for perturbed excitable systems  

E-Print Network (OSTI)

We present a control method based on two steps: prediction and prevention. For prediction we use the anticipated synchronization scheme, considering unidirectional coupling between excitable systems in a master-slave configuration. The master is the perturbed system to be controlled, meanwhile the slave is an auxiliary system which is used to predict the master's behavior. We demonstrate theoretically and experimentally that an efficient control may be achieved.

Marzena Ciszak; Claudio R. Mirasso; Raul Toral; Oscar Calvo

2008-07-15T23:59:59.000Z

329

Two-Loop Bethe Logarithms for Higher Excited S Levels  

E-Print Network (OSTI)

Processes mediated by two virtual low-energy photons contribute quite significantly to the energy of hydrogenic S states. The corresponding level shift is of the order of (alpha/pi)^2 (Zalpha)^6 m_e c^2 and may be ascribed to a two-loop generalization of the Bethe logarithm. For 1S and 2S states, the correction has recently been evaluated by Pachucki and Jentschura [Phys. Rev. Lett. vol. 91, 113005 (2003)]. Here, we generalize the approach to higher excited S states, which in contrast to the 1S and 2S states can decay to P states via the electric-dipole (E1) channel. The more complex structure of the excited-state wave functions and the necessity to subtract P-state poles lead to additional calculational problems. In addition to the calculation of the excited-state two-loop energy shift, we investigate the ambiguity in the energy level definition due to squared decay rates.

Ulrich D. Jentschura

2004-09-23T23:59:59.000Z

330

Miniature UV lamp excited by subnanosecond voltage pulses  

SciTech Connect

Energy, time, and spectral characteristics of emission of the second positive system of N{sub 2} molecules in gaseous nitrogen, Ar - N{sub 2} mixture, and air are investigated. An FPG-10 generator with voltage pulse FWHM of 200 and 400 ps and matched-load amplitudes of 14 and 6 kV, respectively, is used to excite gases. It is shown that excitation can be performed in two regimes using this generator. In the first regime a diffuse discharge is formed at atmospheric pressure, which opens ways to design miniature nanosecond UV lamps. A diffuse discharge is formed due to the generation of runaway electrons, with the aid of electrodes having a small radius of curvature and voltage pulses with a sharp leading edge. In the second regime an elevated average radiation power is obtained under excitation by a barrier discharge. However, the operating pressure is lower in this case, and the sizes of the emitting region and the UV pulse width significantly increase. (laser applications and other topics in quantum electronics)

Erofeev, M V; Baksht, E Kh; Tarasenko, Viktor F; Shut'ko, Yu V [Institute of High Current Electronics, Siberian Branch, Russian Academy of Sciences, Tomsk (Russian Federation)

2010-08-27T23:59:59.000Z

331

EVIDENCE FOR THE PHOTOSPHERIC EXCITATION OF INCOMPRESSIBLE CHROMOSPHERIC WAVES  

SciTech Connect

Observing the excitation mechanisms of incompressible transverse waves is vital for determining how energy propagates through the lower solar atmosphere. We aim to show the connection between convectively driven photospheric flows and incompressible chromospheric waves. The observations presented here show the propagation of incompressible motion through the quiet lower solar atmosphere, from the photosphere to the chromosphere. We determine photospheric flow vectors to search for signatures of vortex motion and compare results to photospheric flows present in convective simulations. Further, we search for the chromospheric response to vortex motions. Evidence is presented that suggests incompressible waves can be excited by the vortex motions of a strong magnetic flux concentration in the photosphere. A chromospheric counterpart to the photospheric vortex motion is also observed, presenting itself as a quasi-periodic torsional motion. Fine-scale, fibril structures that emanate from the chromospheric counterpart support transverse waves that are driven by the observed torsional motion. A new technique for obtaining details of transverse waves from time-distance diagrams is presented and the properties of transverse waves (e.g., amplitudes and periods) excited by the chromospheric torsional motion are measured.

Morton, R. J.; Verth, G.; Fedun, V.; Erdelyi, R. [Solar Physics and Space Plasma Research Centre (SP2RC), University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH (United Kingdom); Shelyag, S., E-mail: richard.morton@northumbria.ac.uk [Astrophysics Research Centre, School of Mathematics and Physics, Main Physics Building, Queen's University Belfast, Belfast, County Antrim BT7 1NN (United Kingdom)

2013-05-01T23:59:59.000Z

332

Steam Turbine Generator Auxiliary System Maintenance Guide--Volume 7 (Generator Excitation System)  

Science Conference Proceedings (OSTI)

Excitation systems are a critical part of the power generation system. They must be capable of providing a reliable excitation current to the generator and respond to system fluctuations while maintaining consistent generator voltage and power factor. Most modern excitation systems use a static or rotating solid-state exciter and include the associated components required to provide regulation and control over voltage and reactive power flow and to enhance power system stability. The proper operation of ...

2011-12-23T23:59:59.000Z

333

Proceedings of the 1984 workshop on high-energy excitations in condensed matter. Volume I  

Science Conference Proceedings (OSTI)

This volume covers neutron scattering inelastic instrumentation, x-ray scattering inelastic instrumentation, and magnetic excitations. (GHT)

Silver, R.N. (comp.)

1984-12-01T23:59:59.000Z

334

Cold chemistry with electronically excited Ca{sup +} Coulomb crystals  

SciTech Connect

Rate constants for chemical reactions of laser-cooled Ca{sup +} ions and neutral polar molecules (CH{sub 3}F, CH{sub 2}F{sub 2}, or CH{sub 3}Cl) have been measured at low collision energies (/k{sub B}=5-243 K). Low kinetic energy ensembles of {sup 40}Ca{sup +} ions are prepared through Doppler laser cooling to form ''Coulomb crystals'' in which the ions form a latticelike arrangement in the trapping potential. The trapped ions react with translationally cold beams of polar molecules produced by a quadrupole guide velocity selector or with room-temperature gas admitted into the vacuum chamber. Imaging of the Ca{sup +} ion fluorescence allows the progress of the reaction to be monitored. Product ions are sympathetically cooled into the crystal structure and are unambiguously identified through resonance-excitation mass spectrometry using just two trapped ions. Variations of the laser-cooling parameters are shown to result in different steady-state populations of the electronic states of {sup 40}Ca{sup +} involved in the laser-cooling cycle, and these are modeled by solving the optical Bloch equations for the eight-level system. Systematic variation of the steady-state populations over a series of reaction experiments allows the extraction of bimolecular rate constants for reactions of the ground state ({sup 2}S{sub 1/2}) and the combined excited states ({sup 2}D{sub 3/2} and {sup 2}P{sub 1/2}) of {sup 40}Ca{sup +}. These results are analyzed in the context of capture theories and ab initio electronic structure calculations of the reaction profiles. In each case, suppression of the ground state rate constant is explained by the presence of a submerged or real barrier on the ground state potential surface. Rate constants for the excited states are generally found to be in line with capture theories.

Gingell, Alexander D.; Bell, Martin T.; Oldham, James M.; Softley, Timothy P. [Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford OX1 3TA (United Kingdom); Harvey, Jeremy N. [Department of Chemistry, University of Bristol, Bristol BS8 1TS (United Kingdom)

2010-11-21T23:59:59.000Z

335

Hyperspectral imaging of microalgae using two-photon excitation.  

SciTech Connect

A considerable amount research is being conducted on microalgae, since microalgae are becoming a promising source of renewable energy. Most of this research is centered on lipid production in microalgae because microalgae produce triacylglycerol which is ideal for biodiesel fuels. Although we are interested in research to increase lipid production in algae, we are also interested in research to sustain healthy algal cultures in large scale biomass production farms or facilities. The early detection of fluctuations in algal health, productivity, and invasive predators must be developed to ensure that algae are an efficient and cost-effective source of biofuel. Therefore we are developing technologies to monitor the health of algae using spectroscopic measurements in the field. To do this, we have proposed to spectroscopically monitor large algal cultivations using LIDAR (Light Detection And Ranging) remote sensing technology. Before we can deploy this type of technology, we must first characterize the spectral bio-signatures that are related to algal health. Recently, we have adapted our confocal hyperspectral imaging microscope at Sandia to have two-photon excitation capabilities using a chameleon tunable laser. We are using this microscope to understand the spectroscopic signatures necessary to characterize microalgae at the cellular level prior to using these signatures to classify the health of bulk samples, with the eventual goal of using of LIDAR to monitor large scale ponds and raceways. By imaging algal cultures using a tunable laser to excite at several different wavelengths we will be able to select the optimal excitation/emission wavelengths needed to characterize algal cultures. To analyze the hyperspectral images generated from this two-photon microscope, we are using Multivariate Curve Resolution (MCR) algorithms to extract the spectral signatures and their associated relative intensities from the data. For this presentation, I will show our two-photon hyperspectral imaging results on a variety of microalgae species and show how these results can be used to characterize algal ponds and raceways.

Sinclair, Michael B.; Melgaard, David Kennett; Reichardt, Thomas A. (Sandia National Laboratories, Livermore, CA); Timlin, Jerilyn Ann; Garcia, Omar Fidel; Luk, Ting Shan; Jones, Howland D. T.; Collins, Aaron M.

2010-10-01T23:59:59.000Z

336

RESEARCH Open Access H low field nuclear magnetic resonance  

E-Print Network (OSTI)

magnetic resonance, Biodiesel, Biodiesel physical properties, Chemometrics, Laplace inversion of biodiesel Paula Berman1 , Adi Leshem1 , Oren Etziony1 , Ofer Levi2 , Yisrael Parmet2 , Michael Saunders3 and Zeev Wiesman1* Abstract Background: Biodiesel production has increased dramatically over the last

Stanford University

337

R6, Low Field Electron Transport in Mixed Arsenide Antimonide ...  

Science Conference Proceedings (OSTI)

Mixed anion InAsySb1-y quantum wells (QW) with high electron mobility are excellent candidates for direct integration with high hole...

338

Noise-induced energy excitation by a general environment  

E-Print Network (OSTI)

We analyze the effects that general environments, namely ohmic and non-ohmic, at zero and high temperature induce over a quantum Brownian particle. We state that the evolution of the system can be summarized in terms of two main environmental induced physical phenomena: decoherence and energy activation. In this article we show that the latter is a post-decoherence phenomenon. As the energy is an observable, the excitation process is a direct indication of the system-environment entanglement particularly useful at zero temperature.

Fernando C. Lombardo; Paula I. Villar

2007-08-07T23:59:59.000Z

339

Self-Excitation and Feedback Cooling of an Isolated Proton  

Science Conference Proceedings (OSTI)

The first one-proton self-excited oscillator (SEO) and one-proton feedback cooling are demonstrated. In a Penning trap with a large magnetic gradient, the SEO frequency is resolved to the high precision needed to detect a one-proton spin flip. This is after undamped magnetron motion is sideband cooled to a 14 mK theoretical limit, and despite random frequency shifts (typically larger than those from a spin flip) that take place every time sideband cooling is applied. The observations open a possible path towards a million-fold improved comparison of the p and p magnetic moments.

Guise, N.; DiSciacca, J.; Gabrielse, G. [Department of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States)

2010-04-09T23:59:59.000Z

340

Exotic modes of excitation in deformed neutron-rich nuclei  

SciTech Connect

Low-lying dipole excitation mode in neutron-rich Mg isotopes close to the drip line is investigated in the framework of the Hartree-Fock-Bogoliubov and the quasiparticle random-phase approximation employing the Skyrme and the pairing energy-density functionals. It is found that the low-lying dipole-strength distribution splits into the K{sup {pi}} = 0{sup -} and 1{sup -} components due to the nuclear deformation. The low-lying dipole strength increases as the neutron drip-line is approached.

Yoshida, Kenichi [RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198 (Japan)

2011-05-06T23:59:59.000Z

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341

Nuclear Excitation by a Strong Short Laser Pulse  

Science Conference Proceedings (OSTI)

We derive the conditions on laser energy and photon number under which a short strong laser pulse excites a collective nuclear mode. We use the Giant Dipole Resonance as a representative example, and a random-matrix description of the fine-structure states and perturbation theory as tools. We identify the relevant observable as the nuclear time-decay function. That function is the Fourier transform of the autocorrelation function of the associated scattering matrix and contains information not otherwise available. We evaluate that function in specific cases and show that it may deviate significantly from an exponential.

Weidenmueller, Hans A. [Max-Planck-Institut fuer Kernphysik, Heidelberg (Germany)

2011-05-06T23:59:59.000Z

342

Excitation energy dependence of symmetry energy of finite nuclei  

E-Print Network (OSTI)

A finite range density and momentum dependent effective interaction is used to calculate the density and temperature dependence of the symmetry energy coefficient Csym(rho,T) of infinite nuclear matter. This symmetry energy is then used in the local density approximation to evaluate the excitation energy dependence of the symmetry energy coefficient of finite nuclei in a microcanonical formulation that accounts for thermal and expansion effects. The results are in good harmony with the recently reported experimental data from energetic nucleus-nucleus collisions.

S. K. Samaddar; J. N. De; X. Vinas; M. Centelles

2007-06-22T23:59:59.000Z

343

Surface plasma wave excitation via laser irradiated overdense plasma foil  

SciTech Connect

A laser irradiated overdense plasma foil is seen to be susceptible to parametric excitation of surface plasma wave (SPW) and ion acoustic wave (IAW) on the ion plasma period time scale. The SPW is localised near the front surface of the foil while IAW extends upto the rear. The evanescent laser field and the SPW exert a ponderomotive force on electrons driving the IAW. The density perturbation associated with the latter beats with the laser induced oscillatory electron velocity to drive the SPW. At relativistic laser intensity, the growth rate is of the order of ion plasma frequency.

Kumar, Pawan; Tripathi, V. K. [Department of Physics, Indian Institute of Technology Delhi, New Delhi 110 016 (India)

2012-04-09T23:59:59.000Z

344

Excited-Nucleon Spectroscopy with 2+1 Fermion Flavors  

E-Print Network (OSTI)

We present progress made by the Hadron Spectrum Collaboration (HSC) in determining the tower of excited nucleon states using 2+1-flavor anisotropic clover lattices. The HSC has been investigating interpolating operators projected into irreducible representations of the cubic group in order to better calculate two-point correlators for nucleon spectroscopy; results are published for quenched and 2-flavor anisotropic Wilson lattices. In this work, we present the latest results using a new technique, distillation, which allows us to reach higher statistics than before. Future directions will be outlined at the end.

Saul Cohen; John M. Bulava; Justin Foley; Colin Morningstar; Ricky Wong; Robert G. Edwards; Balint Joo; David G. Richards; K. Jimmy Juge; Huey-Wen Lin; Nilmani Mathur; Michael J. Peardon; Sinead M. Ryan

2009-11-17T23:59:59.000Z

345

Open-loop Band excitation Kelvin Probe Force Microscopy  

Science Conference Proceedings (OSTI)

A multidimensional scanning probe microscopy approach for quantitative, cross-talk free mapping of surface electrostatic properties is demonstrated. Open-loop band excitation Kelvin probe force microscopy (OL BE KPFM) probes the full response-frequency-potential surface at each pixel at standard imaging rates. The subsequent analysis reconstructs work function, tip surface capacitance gradient and resonant frequency maps, obviating feedback-related artifacts. OL BE KPFM imaging is demonstrated for several materials systems with topographic, potential and combined contrast. This approach combines the features of both frequency and amplitude KPFM and allows complete decoupling of topographic and voltage contributions to the KPFM signal.

Guo, Senli [ORNL; Kalinin, Sergei V [ORNL; Jesse, Stephen [ORNL

2012-01-01T23:59:59.000Z

346

Excitation of superconducting qubits from hot non-equilibrium quasiparticles  

E-Print Network (OSTI)

Superconducting qubits probe environmental defects such as non-equilibrium quasiparticles, an important source of decoherence. We show that "hot" non-equilibrium quasiparticles, with energies above the superconducting gap, affect qubits differently from quasiparticles at the gap, implying qubits can probe the dynamic quasiparticle energy distribution. For hot quasiparticles, we predict a non-neligable increase in the qubit excited state probability P_e. By injecting hot quasiparticles into a qubit, we experimentally measure an increase of P_e in semi-quantitative agreement with the model and rule out the typically assumed thermal distribution.

J. Wenner; Yi Yin; Erik Lucero; R. Barends; Yu Chen; B. Chiaro; J. Kelly; M. Lenander; Matteo Mariantoni; A. Megrant; C. Neill; P. J. J. O'Malley; D. Sank; A. Vainsencher; H. Wang; T. C. White; A. N. Cleland; John M. Martinis

2012-09-08T23:59:59.000Z

347

Optical Dichroism by Nonlinear Excitations in Graphene Nanoribbons  

E-Print Network (OSTI)

The honeycomb carbon structure of graphene and nanotubes has a dynamics which can give rise to a spectrum. This can be excited via the interaction with an external electromagnetic field. In this work, non-linear waves on graphene and nanotubes associated with the carbon structure are investigated using a gauge model. Typical energies are estimated and there scaling with the nanoribbon width investigated. Furthermore, the soliton-photon interaction depends on the incident photon polarization. In particular, we find that the nanoribbon is transparent when the polarization is along the largest length. Relying on the scaling with the width, we suggest a way to experimentally identify the soliton waves in nanoribbons.

C. E. Cordeiro; A. Delfino; T. Frederico; O. Oliveira; W. de Paula

2013-02-15T23:59:59.000Z

348

Excited State Effects in Nucleon Matrix Element Calculations  

SciTech Connect

We perform a high-statistics precision calculation of nucleon matrix elements using an open sink method allowing us to explore a wide range of sink-source time separations. In this way the influence of excited states of nucleon matrix elements can be studied. As particular examples we present results for the nucleon axial charge g{sub A} and for the first moment of the isovector unpolarized parton distribution x{sub u-d}. In addition, we report on preliminary results using the generalized eigenvalue method for nucleon matrix elements. All calculations are performed using N{sub f} = 2+1+1 maximally twisted mass Wilson fermions.

Constantia Alexandrou, Martha Constantinou, Simon Dinter, Vincent Drach, Karl Jansen, Theodoros Leontiou, Dru B Renner

2011-12-01T23:59:59.000Z

349

Excited-Nucleon Spectroscopy with 2+1 Fermion Flavors  

Science Conference Proceedings (OSTI)

We present progress made by the Hadron Spectrum Collaboration (HSC) in determining the tower of excited nucleon states using 2+1-flavor anisotropic clover lattices. The HSC has been investigating interpolating operators projected into irreducible representations of the cubic group in order to better calculate two-point correlators for nucleon spectroscopy; results are published for quenched and 2-flavor anisotropic Wilson lattices. In this work, we present the latest results using a new technique, distillation, which allows us to reach higher statistics than before. Future directions will be outlined at the end.

Cohen, Saul; Foley, Justin; Morningstar, Colin; Wong, Ricky; Edwards, Robert G; Joo, Balint; Richards, David G; Juge, Jimmy; Lin, Huey-Lin; Mathur, Nilmani; Peardon, Micheal J

2010-01-01T23:59:59.000Z

350

Systematics and Biodiversity 2 (4): 375417 Issued 18 April 2005 doi:10.1017/S1477200004001574 Printed in the United Kingdom C The Natural History Museum  

E-Print Network (OSTI)

Printed in the United Kingdom C The Natural History Museum Phylogenetic systematics and historical biogeography of the Neotropical electric fish Gymnotus (Teleostei: Gymnotidae) J. S. Albert1, *, W. G. R Rates of character state evolution 397 Geographic and ecological distributions 400 Discussion 401

Lovejoy, Nathan

351

WEB PUBLISHING APPLICATION FORM: REGISTRATION AS OPENTEXT CMS APPROVER This form should be printed and completed by members of staff of the University who wish to  

E-Print Network (OSTI)

WEB PUBLISHING APPLICATION FORM: REGISTRATION AS OPENTEXT CMS APPROVER This form should be printed and updating web information using OpenText CMS [Content Management System]. An Approver has the ability.e. the navigation or information architecture. If you only need to edit an existing web site and create or edit

Howie, Jim

352

02/06/2006 07:44 PMU.S. Department of Energy Page 1 of 2http://www.doe.gov/print/3161.htm  

E-Print Network (OSTI)

, affordable nuclear energy worldwide WASHINGTON, DC ­ As part of President Bush's Advanced Energy Initiative.S. Department of Energy, Office of Public Affairs, Washington, D.C. #12;02/06/2006 07:44 PMU.S. Department of Energy Page 1 of 2http://www.doe.gov/print/3161.htm News

353

Chemical Geology (Isotope Geoscience Section), 59 (1986) 59--74 59 Elsevier Science Publishers B.V., Amsterdam --Printed in The Netherlands  

E-Print Network (OSTI)

Chemical Geology (Isotope Geoscience Section), 59 (1986) 59--74 59 Elsevier Science Publishers B.V., Amsterdam -- Printed in The Netherlands OXYGEN AND CARBON ISOTOPE FRACTIONATION IN BIOGENIC ARAGONITE: TEMPERATURE EFFECTS ETHAN L. GROSSMAN and TEH-LUNG KU Department of Geology, Texas A &M University, College

Grossman, Ethan L.

354

Progres~ in Nuclear Energy. 1985,Vol. 15, pp. 661~69 Printed in Great Britain. 0079~'~530/85$0.011+ .5(  

E-Print Network (OSTI)

of constant intensity. Due to their fine dynamic response, X-rays as generated by dual beam devicesProgres~ in Nuclear Energy. 1985,Vol. 15, pp. 661~69 Printed in Great Britain. 0079 void fraction, void-fluid interfacial velocity and local correlation length. This paper gives a summary

Pázsit, Imre

355

Journal of China University of Geosciences, Vol. 19, No. 5, p. 549566, October 2008 ISSN 1002-0705 Printed in China  

E-Print Network (OSTI)

Journal of China University of Geosciences, Vol. 19, No. 5, p. 549­566, October 2008 ISSN 1002-0705 Printed in China Microbial Mats in the Mesoproterozoic Carbonates of the North China Platform Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083

Jiang, Ganqing

356

A preliminary in vivo study on the potential application of e-tracking in poultry using ink printed 2D barcodes  

Science Conference Proceedings (OSTI)

A preliminary study on the potential application of electronic tracking in poultry in vivo has been conducted. The experimental procedure for this study was based on previous in vitro findings (Froschle et al., 2009) as part of the same research programme. ... Keywords: Abrasion, Beak, Inkjet printing, Poultry identification, Readability

Barry Mc Inerney; Gerard Corkery; Gashaw Ayalew; Shane Ward; Kevin Mc Donnell

2010-08-01T23:59:59.000Z

357

Enantioselectivities in Electron-Transfer and Excited State Quenching  

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

Enantioselectivities in Electron-Transfer and Excited State Quenching Enantioselectivities in Electron-Transfer and Excited State Quenching Reactions of a Chiral Ruthenium Complex Posessing a Helical Structure Taisuke Hamada, Bruce S. Brunschwig, Kenji Eifuku, Etsuko Fujita, Manuela Körner, Shigeyoshi Sakaki, Rudi van Eldik, and James F. Wishart J. Phys. Chem. A 103, 5645-5654 (1999) [Find paper at ACS Publications] Abstract: The outer sphere electron-transfer reactions between diastereomers of Ru(menbpy)3+° (menbpy = 4,4'-di{(1R,2S,5R)-(-)-menthoxycarbonyl}-2,2'-bipyridine) and enantiomers of Co(acac)3 and Co(edta)- have been studied by pulse radiolysis. D-Ru(menbpy)3+° rapidly reduces Co(acac)3 in 85% EtOH/H2O (1 mM NaH2PO4) with second-order rate constants of (2.1 ± 0.1) x 107 and (7.8 ± 0.2) x 106 M-1 s-1 for the D- and L-Co(acac)3 enantiomers, respectively, and an

358

Slow Wave Excitation in the ICRF and HHFW Regimes  

SciTech Connect

Theoretical considerations and high spatial resolution numerical simulations of radio frequency (rf) wave heating in tokamaks and in spherical toruses (ST) indicate that fast waves launched into tokamaks in the ion cyclotron range of frequencies (ICRF) or into spherical toruses in the high harmonic fast wave (HHFW) regime may excite a short wavelength slow mode inside of the plasma discharge due to the presence of hot electrons that satisfy the condition {omega}excited slow wave may be related to the electrostatic ion cyclotron wave that propagates for frequencies above the fundamental ion cyclotron frequency in warm plasmas or to a high frequency version of a kinetic Alfven wave. This slow wave, if physically real, would provide another path for rf power absorption in tokamaks and ST devices.

Phillips, C. K.; Valeo, E. J.; Hosea, J. C.; LeBlanc, B. P.; Wilson, J. R. [Princeton Plasma Physics Laboratory, Princeton University, Princeton, NJ 08543 (United States); Jaeger, E. F. [XCEL Engineering, 1066 Commerce Park Dr., Oak Ridge, TN 37830 (United States); Berry, L. A.; Ryan, P. M. [Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States); Bonoli, P. T.; Wright, J. C. [MIT Plasma Science and Fusion Center, Cambridge, MA 02139 (United States); Smithe, D. N. [Tech-X Corporation, 5621 Arapahoe Ave., Suite A, Boulder, CO 80303 (United States)

2011-12-23T23:59:59.000Z

359

Effect of Electronic Excitation on Thin Film Growth  

SciTech Connect

The effect of nanosecond pulsed laser excitation on surface diffusion during growth of Ge on Si(100) at 250 degrees C was studied. In Situ reflection high-energy electron diffraction (RHEED) was used to measure the surface diffusion coefficient while ex situ atomic force microscopy (AFM) was used to probe the structure and morphology of the grown quantum dots. The results show that laser excitation of the substrate increases the surface diffusion during growth of Ge on Si(100), changes the growth morphology, improves crystalline structure of the grown quantum dots, and decreases their size distribution. A purely electronic mechanism of enhanced surface diffusion of the deposited Ge is proposed. Ge quantum dots were grown on Si(100)-(2x1) by pulsed laser deposition at various substrate temperatures using a femtosecond Ti:sapphire laser. In-situ reflection high-energy electron diffraction and ex-situ atomic force microscopy were used to analyze the fim structure and morphology. The morphology of germanium islands on silicon was studied at differect coverages. The results show that femtosecond pulsed laser depositon reduces the minimum temperature for epitaxial growth of Ge quantum dots to ~280 degrees C, which is 120 degrees C lower then previously observed in nanosecond pulsed laser deposition and more than 200 degrees C lower than that reported for molecular beam epitaxy and chemical vapor deposition.

Elsayed-Ali, Hani E. [Old Dominion University

2011-01-31T23:59:59.000Z

360

Elementary excitations of a Higgs-Yukawa system  

E-Print Network (OSTI)

This work investigates the physics of elementary excitations for the so-called relativistic quantum scalar plasma system, also known as the Higgs-Yukawa system. Following the Nemes-Piza-Kerman-Lin many-body procedure, the Random-Phase Approximation (RPA) equations were obtained for this model by linearizing the Time-Dependent Hartree-Fock-Bogoliubov equations of motion around equilibrium. The resulting equations have a closed solution, from which the spectrum of excitation modes are studied. We show that the RPA oscillatory modes give the one-boson and two-fermion states of the theory. The results indicate the existence of bound states in certain regions in the phase diagram. Applying these results to recent LHC observations concerning the mass of the Higgs boson, we determine limits for the intensity of the coupling constant g of the Higgs-Yukawa model, in the RPA mean-field approximation, for three decay channels of the Higgs boson. Finally, we verify that, within our approximations, only Higgs bosons with masses larger than 190 GeV/c^2 can decay into top quarks.

E. R. Takano Natti; A. F. R. de Toledo Piza; P. L. Natti; Chi-Yong Lin

2013-04-02T23:59:59.000Z

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361

The Damaging Effects of Earthquake Excitation on Concrete Cooling Towers  

SciTech Connect

Reinforced concrete cooling towers of hyperbolic shell configuration find widespread application in utilities engaged in the production of electric power. In design of critical civil infrastructure of this type, it is imperative to consider all the possible loading conditions that the cooling tower may experience, an important loading condition in many countries is that of the earthquake excitation, whose influence on the integrity and stability of cooling towers is profound. Previous researches have shown that the columns supporting a cooling tower are sensitive to earthquake forces, as they are heavily loaded elements that do not possess high ductility, and understanding the behavior of columns under earthquake excitation is vital in structural design because they provide the load path for the self weight of the tower shell. This paper presents the results of a finite element investigation of a representative 'dry' cooling tower, using realistic horizontal and vertical acceleration data obtained from the recent and widely-reported Tabas, Naghan and Bam earthquakes in Iran. The results of both linear and nonlinear analyses are reported in the paper, the locations of plastic hinges within the supporting columns are identified and the ramifications of the plastic hinges on the stability of the cooling tower are assessed. It is concluded that for the (typical) cooling tower configuration analyzed, the columns that are instrumental in providing a load path are influenced greatly by earthquake loading, and for the earthquake data used in this study the representative cooling tower would be rendered unstable and would collapse under the earthquake forces considered.

Abedi-Nik, Farhad [SADRA Institute of Higher Education, Tehran (Iran, Islamic Republic of); Sabouri-Ghomi, Saeid [K.N.T University of Technology, Tehran (Iran, Islamic Republic of)

2008-07-08T23:59:59.000Z

362

Core and Valence Excitations in Resonant X-ray Spectroscopy using Restricted Excitation Window Time-dependent Density Functional Theory  

Science Conference Proceedings (OSTI)

We report simulations of X-ray absorption near edge structure (XANES), resonant inelastic X-ray scattering (RIXS) and 1D stimulated X-ray Raman spectroscopy (SXRS) signals of cysteine at the oxygen, nitrogen and sulfur K and L2,3 edges. The simulated XANES signals from the restricted window time-dependent density functional theory (REW-TDDFT) and the static exchange (STEX) method are compared with experiments, showing that REW-TDDFT is more accurate and computationally less expensive than STEX. Simulated RIXS and 1D SXRS signals from REW-TDDFT give some insights on the correlation of different excitations in the molecule.

Zhang, Yu; Biggs, Jason D.; Healion, Daniel; Govind, Niranjan; Mukamel, Shaul

2012-11-21T23:59:59.000Z

363

Noise-sustained oscillation and synchronization of excitable media with stirring  

SciTech Connect

Constructive effects of noise have been well studied in spatially extended systems. In most of these studies, the media are static, reaction-diffusion type, and the constructive effects are a consequence of the interplay between local excitation due to noise perturbation and propagation of excitation due to diffusion. Many chemical or biological processes occur in a fluid environment with mixing. In this paper, we investigate the interplay among noise, excitability, diffusion and mixing in excitable media advected by a chaotic flow, in a 2-d Fitz Hugh-Nagumo model described by the reaction-advection-diffusion equations. Without stirring, noise can only generate non-coherent excited patches of the static media. In the presence of stirring, we can observe three dynamical and pattern formation regimes: (i) Non-coherent excitation, when mixing is not strong enough to achieve synchronization of independent excitations developed at different locations; (ii) Coherent global excitation, when noise-perturbation survives the mixing to generate a synchronized excitation of the whole domain; and (iii) Homogenization, when strong enough stirring dilutes quickly those noise-induced local excitations. In the presence of an external sub-threshold periodic forcing, the period of-the noise-sustained oscillations can be locked by the forcing period with different ratios. Our results may be verified in experiments and find applications in population dynamics of oceanic ecological systems.

Neufeld, Z. (Zoltan); Zhou, C. (Changsong); Kurths, J. (Jrgen),; Kiss, I. Z.

2004-01-01T23:59:59.000Z

364

Nonlinear excitations in DNA: Aperiodic models vs actual genome sequences  

E-Print Network (OSTI)

We study the effects of the sequence on the propagation of nonlinear excitations in simple models of DNA in which we incorporate actual DNA sequences obtained from human genome data. We show that kink propagation requires forces over a certain threshold, a phenomenon already found for aperiodic sequences [F. Dom\\'\\i nguez-Adame {\\em et al.}, Phys. Rev. E {\\bf 52}, 2183 (1995)]. For forces below threshold, the final stop positions are highly dependent on the specific sequence. The results of our model are consistent with the stick-slip dynamics of the unzipping process observed in experiments. We also show that the effective potential, a collective coordinate formalism introduced by Salerno and Kivshar [Phys. Lett. A {\\bf 193}, 263 (1994)] is a useful tool to identify key regions in DNA that control the dynamical behavior of large segments. Additionally, our results lead to further insights in the phenomenology observed in aperiodic systems.

Sara Cuenda; Angel Sanchez

2004-07-02T23:59:59.000Z

365

Fully nonlinear excitations of non-Abelian plasma  

E-Print Network (OSTI)

We investigate fully nonlinear, non-Abelian excitations of quark-antiquark plasma, using relativistic fluid theory in cold plasma approximation. There are mainly three important nonlinearities, coming from various sources such as non-Abelian interactions of Yang-Mills (YM) fields, Wong's color dynamics and plasma nonlinearity, in our model. By neglecting nonlinearities due to plasma and color dynamics we get back the earlier results of Blaizot {\\it et. al.}, Phys. Rev. Lett. 72, 3317 (1994). Similarly, by neglecting YM fields nonlinearity and plasma nonlinearity, it reduces to the model of Gupta {\\it et. al.}, Phys. Lett. B498, 223 (2005). Thus we have the most general non-Abelian mode of quark-gluon plasma (QGP). Further, our model resembles the problem of propagation of laser beam through relativistic plasma, Physica 9D, 96 (1983). in the absence of all non-Abelian interactions.

Vishnu M. Bannur

2007-06-06T23:59:59.000Z

366

Excitation of Orbital Eccentricities by Repeated Resonance Crossings Requirements  

E-Print Network (OSTI)

Divergent migration of planets within a viscous circumstellar disk can engender resonance crossings and dramatic excitation of orbital eccentricities. We provide quantitative criteria for the viability of this mechanism. For the orbits of two bodies to diverge, a ring of viscous material must be shepherded between them. As the ring diffuses in radius by virtue of its intrinsic viscosity, the two planets are wedged further apart. The ring mass must be smaller than the planetary masses so that the crossing of an individual resonance lasts longer than the resonant libration period. At the same time, the crossing cannot be of such long duration that the disk's direct influence on the bodies' eccentricities interferes with the resonant interaction between the two planets. This last criterion is robustly satisfied because resonant widths are typically tiny fractions of the orbital radius. We evaluate our criteria not only for giant planets within gaseous protoplanetary disks, but also for shepherd moons that bracke...

Chiang, E I

2003-01-01T23:59:59.000Z

367

Helicity Probabilities For Heavy Quark Fragmentation Into Excited Mesons  

E-Print Network (OSTI)

In the fragmentation of a heavy quark into a heavy meson whose light degrees of freedom have angular momentum $3/2$, all the helicity probabilities are completely determined in the heavy quark limit up to a single probability $w_{3/2}$. We point out that this probability depends on the longitudinal momentum fraction $z$ of the meson and on its transverse momentum $p_\\bot$ relative to the jet axis. We calculate $w_{3/2}$ as a function of scaling variables corresponding to $z$ and $p_\\bot$ for the heavy quark limit of the perturbative QCD fragmentation functions for $b$ quark to fragment into $(b \\bar c)$ mesons. In this model, the light degrees of freedom prefer to have their angular momentum aligned transverse to, rather than along, the jet axis. Implications for the production of excited heavy mesons, like $D^{**}$ and $B^{**}$, are discussed.

Tzu Chiang Yuan

1994-07-20T23:59:59.000Z

368

Ultracold Heteronuclear Mixture of Ground and Excited State Atoms  

E-Print Network (OSTI)

We report on the realization of an ultracold mixture of lithium atoms in the ground state and ytterbium atoms in the excited metastable 3P2 state. Such a mixture can support broad magnetic Feshbach resonances which may be utilized for the production of ultracold molecules with an electronic spin degree of freedom, as well as novel Efimov trimers. We investigate the interaction properties of the mixture in the presence of an external magnetic field and find an upper limit for the background interspecies two-body inelastic decay coefficient of K'2 substate. We calculate the dynamic polarizabilities of the Yb 3P2 magnetic substates for a range of wavelengths, and find good agreement with our measurements at 1064nm. Our calculations also allow the identification of magic frequencies where Yb ground and metastable states are identically trapped and the determination of the interspecies van der Waals coefficients.

Khramov, Alexander; Dowd, William; Roy, Richard; Makrides, Constantinos; Petrov, Alexander; Kotochigova, Svetlana; Gupta, Subhadeep

2013-01-01T23:59:59.000Z

369

Relativistic shock waves and the excitation of plerions  

Science Conference Proceedings (OSTI)

The shock termination of a relativistic magnetohydrodynamic wind from a pulsar is the most interesting and viable model for the excitation of the synchrotron sources observed in plerionic supernova remnants. We have studied the structure of relativistic magnetosonic shock waves in plasmas composed purely of electrons and positrons, as well as those whose composition includes heavy ions as a minority constituent by number. We find that relativistic shocks in symmetric pair plasmas create fully thermalized distributions of particles and fields downstream. Therefore, such shocks are not good candidates for the mechanism which converts rotational energy lost from a pulsar into the nonthermal synchrotron emission observed in plerions. However, when the upstream wind contains heavy ions which are minority constituent by number density, but carry the bulk of the energy density, much of the energy of the shock goes into a downstream, nonthermal power law distribution of positrons with energy distribution N(E)dE {proportional to}E{sup {minus}s}. In a specific model presented in some detail, s = 3. These characteristics are close to those assumed for the pairs in macroscopic MHD wind models of plerion excitation. The essential mechanism is collective synchrotron emission of left-handed extraordinary modes by the ions in the shock front at high harmonics of the ion cyclotron frequency, with the downstream positrons preferentially absorbing almost all of this radiation, mostly at their fundamental (relativistic) cyclotron frequencies. Possible applications to models of plerions and to constraints on theories of energy loss from pulsars are briefly outlines. 27 refs., 5 figs.

Arons, J. (California Univ., Berkeley, CA (USA)); Gallant, Y.A. (California Univ., Berkeley, CA (USA). Dept. of Physics); Hoshino, Masahiro; Max, C.E. (California Univ., Livermore, CA (USA). Inst. of Geophysics and Planetary Physics); Langdon, A.B. (Lawrence Livermore National Lab., CA (USA))

1991-01-07T23:59:59.000Z

370

Enhanced negative ion formation via electron attachment to electronically-excited states  

DOE Green Energy (OSTI)

Recent basic studies on electron attachment to laser-excited molecules show that electron attachment to electronically-excited states can have orders of magnitude larger cross sections compared to the respective ground electronic states. Even though systematic studies have not been conducted, there are indications that electronically-excited states may play a significant role in negative ion formation in gas discharges. The high-lying Rydberg states could be of particular significance since, (i) their production efficiencies are high, and (ii) they have comparatively long lifetimes. Such states could be populated in discharge sources via direct electron impact or via excitation transfer from metastable states of inert gases.

Pinnaduwage, L.A. [Oak Ridge National Lab., TN (United States). Health Sciences Research Div.]|[Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics

1995-12-31T23:59:59.000Z

371

Quantum Chemical Analysis of the Excited State Dynamics of Hydrated Electrons  

E-Print Network (OSTI)

Quantum calculations are performed for an anion water cluster representing the first hydration shell of the solvated electron in solution. The absorption spectra from the ground state, the instant excited states and the relaxed excited states are calculated including CI-SD interactions. Analytic expressions for the nonadiabatic relaxation are presented. It is shown that the 50fs dynamics recently observed after s->p excitation is best accounted for if it is identified with the internal conversion, preceded by an adiabatic relaxation within the excited p state. In addition, transient absorptions found in the infrared are qualitatively reproduced by these calculations .

P. O. J. Scherer; Sighart F. Fischer

2006-02-01T23:59:59.000Z

372

Entropy-driven excitation-energy sorting in superfluid fission dynamics  

E-Print Network (OSTI)

We study the consequences of the constant-temperature behaviour of nuclei in the superfluid regime for the exchange of excitation energy between two nuclei in thermal contact. This situation is realized at the scission configuration of fission at moderate excitation energies. It is shown that all available excitation energy is transferred to the colder fragment. This effect explains why an increase of excitation energy is translated into an increase of the number of emitted neutrons for the heavy fission fragments only. This observation remained unexplained up to now.

Karl-Heinz Schmidt; Beatriz Jurado

2009-12-18T23:59:59.000Z

373

Modeling a Printed Circuit Heat Exchanger with RELAP5-3D for the Next Generation Nuclear Plant  

Science Conference Proceedings (OSTI)

The main purpose of this report is to design a printed circuit heat exchanger (PCHE) for the Next Generation Nuclear Plant and carry out Loss of Coolant Accident (LOCA) simulation using RELAP5-3D. Helium was chosen as the coolant in the primary and secondary sides of the heat exchanger. The design of PCHE is critical for the LOCA simulations. For purposes of simplicity, a straight channel configuration was assumed. A parallel intermediate heat exchanger configuration was assumed for the RELAP5 model design. The RELAP5 modeling also required the semicircular channels in the heat exchanger to be mapped to rectangular channels. The initial RELAP5 run outputs steady state conditions which were then compared to the heat exchanger performance theory to ensure accurate design is being simulated. An exponential loss of pressure transient was simulated. This LOCA describes a loss of coolant pressure in the primary side over a 20 second time period. The results for the simulation indicate that heat is initially transferred from the primary loop to the secondary loop, but after the loss of pressure occurs, heat transfers from the secondary loop to the primary loop.

Not Available

2010-12-01T23:59:59.000Z

374

Berkeley Lab News Center » Dancing in the Dark: Berkeley Lab Scientists Shed New Light on Protein-Salt Interactions » Print  

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

/10 3:30 PM /10 3:30 PM Berkeley Lab News Center » Dancing in the Dark: Berkeley Lab Scientists Shed New Light on Protein-Salt Interactions » Print Page 1 of 3 http://newscenter.lbl.gov/feature-stories/2010/08/11/protein-salt-interactions/print/ Simulation of the interaction between triglycine and dissolved sodium sulfite in water shows the long chain-like triglycine molecule (center) interacting directly with sulfite anions (tripods of yellow and red atoms) while also interacting via multiple hydrogen bonds (thin red or blue lines) with the surrounding water molecules (red and white sticks). - Berkeley Lab News Center - http://newscenter.lbl.gov - Dancing in the Dark: Berkeley Lab Scientists Shed New Light on Protein-Salt Interactions Posted By lcyarris On August 11, 2010 @ 12:08 pm In Feature Stories | Comments Disabled

375

Boston.com / News / Local / New fuel cell uses germs to generate electricity Page 1 THIS STORY HAS BEEN FORMATTED FOR EASY PRINTING  

E-Print Network (OSTI)

Boston.com / News / Local / New fuel cell uses germs to generate electricity Page 1 THIS STORY HAS BEEN FORMATTED FOR EASY PRINTING New fuel cell uses germs to generate electricity By Gareth Cook, Globe://www.boston.com/news/local/articles/2003/09/08/new_fuel_cell_uses_germs_to_generate_electricity?mode=9:15:28 AM 9/8/2003 #12;Boston

Lovley, Derek

376

Scientific American: Rapid Victories Against Extreme Poverty http://www.sciam.com/print_version.cfm?articleID=5B978D32-E7F2-... 1 of 2 4/24/2007 11:39 AM  

E-Print Network (OSTI)

://www.sciam.com/print_version.cfm?articleID=5B978D32-E7F2-... 2 of 2 4/24/2007 11:39 AM The Millennium Villages Project, a public-private

377

Iterative Solutions for Low Lying Excited States of a Class of Schroedinger Equation  

E-Print Network (OSTI)

The convergent iterative procedure for solving the groundstate Schroedinger equation is extended to derive the excitation energy and the wave function of the low-lying excited states. The method is applied to the one-dimensional quartic potential problem. The results show that the iterative solution converges rapidly when the coupling $g$ is not too small.

R. Friedberg; T. D. Lee; W. Q. Zhao

2006-07-12T23:59:59.000Z

378

Shielding Design for Current Sensor of Excitation System Based on 3-D FEM  

Science Conference Proceedings (OSTI)

In an excitation system of a certain type synchronous motor, current sensor for detection and protection often works under abnormal conditions. It leads to inability to play the role of the normal current detection, or even false tripping down the serious ... Keywords: Excitation system, Electromagnetic interference, Finite element method, Shielding

Huimin Liang; Jiaxin You; Xuerong Ye; Guofu Zhai; Guoliang Li; Yutao Shi

2010-09-01T23:59:59.000Z

379

The excitation control system of the ASK-100-4 asynchronous compensator  

Science Conference Proceedings (OSTI)

The excitation regulation system of the ASK-100-4 asynchronous compensator is described. The main modes of operation of the compensators in the Beskudnikovo substation of the 'Mosenergo' JSC are considered. The results of an investigation of an actual sample of an AER-ASC automatic excitation regulator on a computer bench, operating in real time, are presented.

Dovganyuk, I. Ya.; Labunets, I. A.; Plotnikova, T. V.; Sokur, P. V., E-mail: sokur@vniie.ru; Shakaryan, Yu. G. [JSC 'R and D Centre for Power Engineering' (Russian Federation)

2010-12-15T23:59:59.000Z

380

Selective excitation in dipole coupled systems Jamie D. Walls, Malgorzata Marjanska, Dimitris Sakellariou,  

E-Print Network (OSTI)

of small-tip pulses separated by time stip that characterizes the excitation profile. Such an approach has of the MREV-8 sequence, sc, be chosen to satisfy the criterion Nsc ¼ stip (where N is an integer) in order the condition Nsc ¼ stip. Secondly, a dif- ferent excitation profile than that of the DANTE sequence may

Pines, Alexander

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


381

Excitations of superfluid 4 He in porous media: Aerogel and Vycor  

E-Print Network (OSTI)

Excitations of superfluid 4 He in porous media: Aerogel and Vycor O. Plantevin and B. Fa structure factor S(Q, ) and the elementary excitations of liquid 4 He immersed in aerogel and Vycor. In both and superfluid density, S(T), of liquid 4 He in aerogel and Vycor have been made over the past 30 years.1

Glyde, Henry R.

382

Spatiotemporal patterns in an excitable plankton system with lysogenic viral infection  

Science Conference Proceedings (OSTI)

An excitable model of phytoplankton-zooplankton dynamics is considered for the case of lysogenic viral infection of the phytoplankton population. The phytoplankton population is split into a susceptible (S) and an infected (I) part. Both parts grow logistically, ... Keywords: Excitability, Lysogeny, Noise-enhanced spatial spread and survival, Plankton, Spatiotemporal structures, Stochastic reaction-diffusion system, Viral infections

H. Malchow; F. M. Hilker; R. R. Sarkar; K. Brauer

2005-11-01T23:59:59.000Z

383

Parametrically excited non-linear systems: a comparison of two methods  

Science Conference Proceedings (OSTI)

Subharmonic resonance of two-degree-of-freedom systems with cubic non-linearities to multifrequency parametric excitations in the presence of three-to-one internal resonance is investigated. Two approximate methods (the multiple scales and the generalized ... Keywords: generalized synchronization method, multifrequency excitations, multiple scales method, non-linear vibration, resonances, stability, two-mode response

A. F. El-Bassiouny

2002-11-01T23:59:59.000Z

384

High Excitation Transfer Efficiency from Energy Relay Dyes in Dye-Sensitized Solar Cells  

E-Print Network (OSTI)

High Excitation Transfer Efficiency from Energy Relay Dyes in Dye-Sensitized Solar Cells Brian E soluble energy relay dyes with high molar extinction coefficients. KEYWORDS Solar cell, energy transfer-sensitized solar cells, the excited ERDs must be able to efficiently transfer energy to the sensitizing dyes

McGehee, Michael

385

XCDCC: Core Excitation in the Breakup of Exotic Nuclei  

E-Print Network (OSTI)

The eXtended Continuum Discretized Coupled Channel (XCDCC) method is developed to treat reactions where core degrees of freedom play a role. The projectile is treated as a multi-configuration coupled channels system generated from a valence particle coupled to a deformed core which is allowed to excite. The coupled channels initial state breaks up into a coupled channels continuum which is discretized into bins, similarly to the original CDCC method. Core collective degrees of freedom are also included in the interaction of the core and the target, so that dynamical effects can occur during the reaction. We present results for the breakup of $^{17}$C=$^{16}$C+n and $^{11}$Be=$^{10}$Be+n on $^{9}$Be. Results show that the total cross section increases with core deformation. More importantly, the relative percentage of the various components of the initial state are modified during the reaction process through dynamical effects. This implies that comparing spectroscopic factors from structure calculations with experimental cross sections requires more detailed reaction models that go beyond the single particle model.

N. C. Summers; F. M. Nunes; I. J. Thompson

2006-02-10T23:59:59.000Z

386

Spin-dipole excitations studied with tensor polarised deuteron beams  

SciTech Connect

Taking advantage of the spin, isospin and J{sup {pi}} selectivity of cross sections and analysing powers of the tensor polarised {sup 12}C(d-vector,{sup 2}He) reaction, the J{sup {pi}} = 0{sup -},1{sup -}2{sup -} components of the spin-dipole resonance in {sup 12}B have been investigated. The experiment was performed at the Big-Bite Spectrometer of the KVI taking advantage of purely tensor polarised deuteron beams provided by the AGOR cyclotron. The unique energy resolution achieved at KVI allowed determination of analysing powers for well resolved transitions up to 5 MeV excitation energy. The analysing powers of states with known spin and parity provided the means for the first-time for verification of model-independent predictions of analysing powers at extreme forward angles. In the continuum region, the analysing powers allowed identification of the J{sup {pi}} components of the IVSGDR, including a 0{sup -} component located at E{sub x} = 9.3 MeV.

Woertche, H. J. [Kernfysisch Versneller Instituut (KVI) University of Groningen (Netherlands)

2008-05-12T23:59:59.000Z

387

ELECTRON EXCITATION COLLISION STRENGTHS FOR SINGLY IONIZED NITROGEN  

SciTech Connect

Collision strengths for the astrophysically important lines in N II have been calculated in the close-coupling approximation using the B-spline Breit-Pauli R-matrix method. The multiconfiguration Hartree-Fock method with term-dependent non-orthogonal orbitals is employed for an accurate representation of the target wave functions. The close-coupling expansion includes 58 bound levels of N II. The 58 target levels belong to the terms of the ground 2s {sup 2}2p {sup 2} and singly excited 2s2p {sup 3}, 2s {sup 2}2p3s, 2s {sup 2}2p3p, 2s {sup 2}2p3d, 2s {sup 2}2p4s, 2s {sup 2}2p4p, and 2s2p {sup 2}3s configurations. The effective collision strengths are obtained by averaging the electron collision strengths over a Maxwellian distribution of velocities and these are tabulated for all 1653 fine-structure transitions among the 58 levels at electron temperatures in the range from 500 to 100,000 K. The line strengths, oscillator strengths, and transition probabilities for all E1 transitions are tabulated. The present results are compared with a variety of other close-coupling calculations. There is an overall good agreement with the 23-state calculation by Hudson and Bell in most part, but some significant differences are also noted for some transitions.

Tayal, S. S., E-mail: stayal@cau.edu [Department of Physics, Clark Atlanta University, Atlanta, GA 30314 (United States)

2011-08-01T23:59:59.000Z

388

The character of resonant charge exchange involving highly excited atoms  

SciTech Connect

We study the process of resonant charge exchange involving excited helium atoms with the principal quantum number n = 5 colliding with the helium ion in the ground state in the collision energy range from thermal up to 10 eV. This information may be important for the analysis of planet atmospheres containing helium, in particular, for Jupiter's atmosphere, but our basic interest is the transition from the quantum to classical description of this process, where, due to large cross sections, evaluations of the cross sections are possible. For the chosen process, quantum theory allows determining the cross section as a result of a tunnel electron transition, while classical theory accounts for over-barrier electron transitions. The classical theory additionally requires effective transitions between states with close energies. The analysis of these transitions for helium with n = 5 shows that electron momenta and their projections are mixed for a part of the states, while for other states, the mixing is absent. A simple criterion to separate such states is given. In addition, the main contribution to the cross section of resonant charge exchange follows from tunnel electron transitions. As a result, the quantum theory is better for calculating the cross sections of resonant charge exchange than the classical one and also allows finding the partial cross sections of resonant charge exchange, while the classical approach gives the cross section of resonant charge exchange in a simple manner with the accuracy of 20%.

Kosarim, A. V.; Smirnov, B. M., E-mail: bmsmirnov@gmail.com [Russian Academy of Sciences, Joint Institute for High Temperatures (Russian Federation); Capitelli, M. [University of Bari, Department of Chemistry (Italy); Laricchiuta, A. [IMIP CNR, Sezione Territoriale di Bari (Italy)

2012-12-15T23:59:59.000Z

389

Efficient Generation of the LF Excited State of Tris-(bpy)-Ru(II)  

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

Generation of the Ligand Field Excited State of Generation of the Ligand Field Excited State of Tris-(2,2'-bipyridine)-ruthenium(II) through Sequential Two-Photon Capture by [Ru(bpy)3]2+ or Electron Capture by [Ru(bpy)3]3+ David W. Thompson, James F. Wishart, Bruce S. Brunschwig and Norman Sutin J. Phys. Chem. A, 105, 8117-8122 (2001) [Find paper at ACS Publications] Abstract: The relaxation dynamics and product distribution resulting from the decay of high lying excited states generated via sequential two-photon capture by [Ru(bpy)3]2+ or electron capture by [Ru(bpy)3]3+ have been investigated by flash photolysis and pulse radiolysis techniques. In comparison to the decay dynamics for monophotonic excitation, dramatically different relaxation dynamics have been observed. High-power flash excitation yields

390

Effect of neutron composition and excitation energy on the primary fragment yield distribution in multifragmentation reaction  

E-Print Network (OSTI)

The isotopic properties of the primary and secondary fragment yield distribution in the multifragmentation of $^{58}$Fe + $^{58}$Ni and $^{58}$Fe + $^{58}$Fe reactions are studied with respect to the $^{58}$Ni + $^{58}$Ni reaction at 30, 40 and 47 MeV/nucleon. The reduced neutron and proton densities from the observed fragment yield distribution show primary fragment yield distribution to undergo strongly secondary de-excitations. The effect is small at the lowest excitation energy and smallest neutron-to-proton ratio and becomes large at higher excitation energies and higher neutron-to-proton ratio. The symmetry energy of the primary fragments deduced from the reduced neutron density is significantly lower than that for the normal nuclei at saturation density, indicating that the fragments are highly excited and formed at a reduced density. Furthermore, the symmetry energy is also observed to decrease slowly with increasing excitation energy. The observed effect is explained using the statistical multifragmentation model.

D. V. Shetty; A. S. Botvina; S. J. Yennello; G. A. Souliotis; E. Bell; A. Keksis

2004-09-23T23:59:59.000Z

391

Absolute angle-differential vibrational excitation cross sections for electron collisions with diacetylene  

SciTech Connect

Absolute vibrational excitation cross sections were measured for diacetylene (1,3-butadiyne). The selectivity of vibrational excitation reveals detailed information about the shape resonances. Excitation of the C{identical_to}C stretch and of double quanta of the C-H bend vibrations reveals a {sup 2}{Pi}{sub u} resonance at 1 eV (autodetachment width {approx}30 meV) and a {sup 2}{Pi}{sub g} resonance at 6.2 eV (autodetachment width 1-2 eV). There is a strong preference for excitation of even quanta of the bending vibration. Excitation of the C-H stretch vibration reveals {sigma}* resonances at 4.3, 6.8, and 9.8 eV, with autodetachment widths of {approx}2 eV. Detailed information about resonances permits conclusions about the mechanism of the dissociative electron attachment.

Allan, M.; May, O.; Fedor, J.; Ibanescu, B. C.; Andric, L. [Department of Chemistry, University of Fribourg, Chemin du Musee 9, CH-1700 Fribourg (Switzerland); UPMC, Universite Paris 06, LCPMR, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05 (France) and CNRS, LCPMR (UMR 7614), 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05 (France)

2011-05-15T23:59:59.000Z

392

Excitation of Orbital Eccentricities by Repeated Resonance Crossings: Requirements  

E-Print Network (OSTI)

Divergent migration of planets within a viscous circumstellar disk can engender resonance crossings and dramatic excitation of orbital eccentricities. We provide quantitative criteria for the viability of this mechanism. For the orbits of two bodies to diverge, a ring of viscous material must be shepherded between them. As the ring diffuses in radius by virtue of its intrinsic viscosity, the two planets are wedged further apart. The ring mass must be smaller than the planetary masses so that the crossing of an individual resonance lasts longer than the resonant libration period. At the same time, the crossing cannot be of such long duration that the disk's direct influence on the bodies' eccentricities interferes with the resonant interaction between the two planets. This last criterion is robustly satisfied because resonant widths are typically tiny fractions of the orbital radius. We evaluate our criteria not only for giant planets within gaseous protoplanetary disks, but also for shepherd moons that bracket narrow planetary rings in the solar system. A shepherded ring of gas orbiting at a distance of 1 AU from a solar-type star and having a surface density of less than 500 g/cm^2, a dimensionless alpha viscosity of 0.1, and a height-to-radius aspect ratio of 0.05 can drive two Jovian-mass planets through the 2:1 and higher-order resonances so that their eccentricities amplify to values of several tenths. Because of the requirement that the disk mass in the vicinity of the planets be smaller than the planet masses, divergent resonance crossings may figure significantly into the orbital evolution of planets during the later stages of disk evolution, including the debris disk phase.

E. I. Chiang

2002-10-18T23:59:59.000Z

393

Excited-state OH Mainline Masers in AU Geminorum and NML Cygni  

E-Print Network (OSTI)

Excited-state OH maser emission has previously been reported in the circumstellar envelopes of only two evolved stars: the Mira star AU Geminorum and the hypergiant NML Cygni. We present Very Large Array (VLA) observations of the 1665, 1667, and excited-state 4750 MHz mainline OH transitions in AU Gem and Expanded Very Large Array (EVLA) observations of the excited-state 6030 and 6035 MHz OH mainline transitions in NML Cyg. We detect masers in both mainline transitions in AU Gem but no excited-state emission in either star. We conclude that the excited-state OH emission in AU Gem is either a transient phenomenon (such as for NML Cyg outlined below), or possibly an artifact in the data, and that the excited state OH emission in NML Cyg was generated by an episode of enhanced shock between the stellar mass-loss and an outflow of the Cyg OB2 association. With these single exceptions, it therefore appears that excited-state OH emission indeed should not be predicted nor observable in evolved stars as part of their normal structure or evolution.

Lorant O. Sjouwerman; Vincent L. Fish; Mark J. Claussen; Ylva M. Pihlstroem; Laura K. Zschaechner

2007-07-25T23:59:59.000Z

394

The luminescence characteristics of CsI(Na) crystal under {alpha} and X/{gamma} excitation  

SciTech Connect

In this paper, we study the effective decay time characteristic of CsI(Na) crystal under {sup 239}Pu alpha particle and {sup 137}Cs gamma-ray excitation using a single photon counting decay time measurement system. The measurement system employs a silicon optical fiber to couple and transit single photon. The slow decay time component of CsI(Na) crystal is 460-550 ns. We observe a 15 ns fast decay component under alpha particle excitation. In addition, we find that the primary stage of the falling edge in the decay time curve is non-exponential and drops rapidly when CsI(Na) crystal is excited by {sup 239}Pu alpha particles. Since the high density of self-trapped-excitons (STEs) is produced in alpha particle excitation process, we propose that the fast falling edge is corresponding to the quenching process of STEs which transit with non-radiation in the case of high excitation density. To prove this proposal, we excited the CsI(Na) crystal with sub-nanosecond intensive pulsed X-ray radiation. Our X-ray impinging results show that the fast falling edge also exists under low energy (average 100 keV) bremsstrahlung X-ray excitation.

Liu Jinliang [Department of Engineering Physics, Tsinghua University, Beijing 100084 (China); Radiation Detection Research Center, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024 (China); Liu Fang [Radiation Detection Research Center, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024 (China); School of Nuclear Science and Engineering, North China Electric Power University, Beijing 102206 (China); Ouyang Xiaoping [Department of Engineering Physics, Tsinghua University, Beijing 100084 (China); Radiation Detection Research Center, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024 (China); School of Nuclear Science and Engineering, North China Electric Power University, Beijing 102206 (China); Liu Bin [School of Nuclear Science and Engineering, North China Electric Power University, Beijing 102206 (China); Chen Liang; Ruan Jinlu; Zhang Zhongbing; Liu Jun [Radiation Detection Research Center, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024 (China)

2013-01-14T23:59:59.000Z

395

On the interplay between allowed Gamow-Teller and Isovector Spin Monopole (IVSM) excitations  

SciTech Connect

The excitation of Gamow-Teller (GT) and Isovector Spin Monopole (IVSM) modes in {sup 116}In by (p,n) and (n,p)) charge-exchange reactions is studied within the framework of the Quasiparticle Random-phase Approximation. It is shown that the admixture of the IVSM and Gamow-Teller (GT) excitations is negligible, and that the contribution to the strength above 20 MeV excitation energy, in {sup 116}In, is, most likely, due to the IVSM ({sigma}r{sup 2}{tau}{sup {+-}}) mode.

Bes, D. R. [Dept of Physics. Lab.Tandar, CAC-CNEA. Avda Gral Paz 1499, 1650 Gral San Martin (Argentina); Civitarese, O. [Dept of Physics, University of La Plata, c.c.67 1900, La Plata (Argentina); Suhonen, J. [Dept of Physics, University of Jyvaeskylae, P.O. Box 35, FI-40014, Jyvaeskylae (Finland)

2011-12-16T23:59:59.000Z

396

Discrete variable representation for highly excited states of hydrogen atoms in magnetic fields  

SciTech Connect

A discrete variable representation (DVR) appropriate for describing the highly excited states of hydrogen atoms in laboratory-strength magnetic fields is constructed by using a symmetry-adapted direct product of one-dimensional DVR{close_quote}s in parabolic coordinates related to generalized Gauss-Laguerre quadratures. The resulting sparse Hamiltonian matrix is used in an iterative (filter-diagonalization) procedure to obtain eigenvalues and eigenvectors in a given spectral domain. The method is applied to calculate eigenvalues and lifetimes of {open_quotes}circular{close_quotes} Rydberg states, as well as oscillator strengths for the excitation of highly excited states. {copyright} {ital 1997} {ital The American Physical Society}

Grozdanov, T.P.; Andric, L.; Manescu, C.; McCarroll, R. [Laboratoire de Dynamique des Ions, Atomes et Molecules (URA 774 du CNRS), Universite Pierre et Marie Curie, 4 Place Jussieu T12-B75, 75252 Paris Cedex 05 (France); Grozdanov, T.P. [Institute of Physics, P.O. Box 57, 11001 Belgrade (Yugoslavia)

1997-09-01T23:59:59.000Z

397

Electron excitation collision strengths for positive atomic ions: a collection of theoretical data  

Science Conference Proceedings (OSTI)

This report contains data on theoretical and experimental cross sections for electron impact excitation of positive atomic ions. It is an updated and corrected version of a preliminary manuscript which was used during an Atomic Data Workshop on Electron Excitation of Ions held at Los Alamos in November 1978. The current status of quantitative knowledge of collisional excitation collision strengths is shown for highly stripped ions where configuration mixing, relativistic and resonance effects may be important. The results show a reasonably satisfactory state for first-row isoelectronic ions and indicate that a considerable amount of work remains to be done for second-row and heavier ions.

Merts, A.L.; Mann, J.B.; Robb, W.D.; Magee, N.H. Jr.

1980-03-01T23:59:59.000Z

398

Note: Excited State Studies of Ozone using State-Specific Multireference Coupled Cluster Methods  

SciTech Connect

Vertical excitation energies obtained with state-specific multi-reference coupled cluster (MRCC) methods are reported for the ozone molecule. Using state-specific MRCC non-iterative methods with singles, doubles, and non-iterative triples (MRCCSD(T)) we obtain 4.40 eV for the challenging doubly excited 21A1 state when using a reliable model space. This estimate is in good agreement with experiment (4.5 eV). We also compare our MRCC results with the excitation energies obtained with high-order equation-of-motion coupled cluster methods

Bhaskaran-Nair, Kiran; Kowalski, Karol

2012-12-07T23:59:59.000Z

399

Nuclear excitations and reaction mechanisms. Progress report, November 1, 1975--October 31, 1976. [Summaries of research activities at Brown University  

SciTech Connect

Theoretical research on nuclear excitation and reaction mechanisms is summarized. A list of publications is included. (JFP)

1975-11-01T23:59:59.000Z

400

Print - Industrial Partnerships Office  

... there is an increased need for new engine technologies which can increase fuel efficiency and meet strict pollution standards. Description ...

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


401

Print - Industrial Partnerships Office  

Technology & Market Discovery. ... The analysis and maps produced by the NeMS tool provides an iterative ... Harvesting electrical energy from ...

402

Gasification Technologies_PRINT  

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

electricity generation and production of chemicals and clean liquid fuels. In a time of electricity and fuel-price spikes, flexible gasification systems provide for operation on...

403

Print - Industrial Partnerships Office  

However, once a laser system is designed this way, catastrophic damage can occur to the laser system if even a single pulse is generated without sufficient bandwidth.

404

Printed on Recycled Paper  

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

Site, Colorado; Idaho National Engineering and Environmental Laboratory, Idaho; Savannah River Site, South Carolina; Los Alamos National Laboratory, New Mexico; Hanford Site,...

405

Print - Industrial Partnerships Office  

'Miniapps' Bolster High Performance Computing. LLNL - David Richards. 2012. Plastic Scintillators for Neutron and Gamma Discrimination.

406

Implementing Print Management  

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

Gaseous Diffusion Plant September 20, 2012 While monitoring progress of our sustainability efforts WEMS noticed that the use and costs for paper, toner and support appeared...

407

Printed on Recycled Paper  

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

of remote-handled (RH) transuranic (TRU) radioactive waste at the Waste Isolation Pilot Plant (WIPP). The shipment, which originated at Idaho National Laboratory (INL),...

408

Printed inorganic transistors  

E-Print Network (OSTI)

Forty years of exponential growth of semiconductor technology have been predicated on the miniaturization of the transistors that comprise integrated circuits. While complexity has greatly increased within a given area of ...

Ridley, Brent (Brent Alan), 1974-

2003-01-01T23:59:59.000Z

409

Application of genetic algorithm to improve voltage regulation of self-excited induction generator in a wind energy conversion system  

Science Conference Proceedings (OSTI)

Self-excited induction generators have been found to be most suitable for wind energy conversion in remote locations. In this paper, an attempt has been made to improve the voltage regulation of self-excited induction generator (SEIG) using series compensation. ... Keywords: genetic algorithms, intelligent systems, modelling, renewable energy, self-excited induction generators, simulation, voltage regulation, wind energy conversion systems, wind power

Dheeraj Joshi; K. S. Sandhu; M. K. Soni

2007-02-01T23:59:59.000Z

410

Use of historic metabolic biotransformation data as a means of anticipating metabolic sites using MetaPrint2D and Bioclipse  

E-Print Network (OSTI)

are coloured accord- ing to the likelihood of a metabolic site being centred on this atom: High: red, Medium: yellow, Low: green, and Very low is not coloured. In single molecule mode the molecule can be edited and by a click of a button the new prediction... MetaPrint2D calculation on the drug Verapamil using the Standard search mode and the database ALL. Atoms coloured in red indicates a high likelihood of me- tabolism occurring at that site, yellow indicates medium, green low, and no colouring indicates...

Carlsson, Lars; Spjuth, Ola; Adams, Sam; Glen, Robert C; Boyer, Scott

2010-07-01T23:59:59.000Z

411

Excited states and electron transfer in solution : models based on density functional theory  

E-Print Network (OSTI)

Our understanding of organic materials for solar energy conversion stands to benefit greatly from accurate, computationally tractable electronic structure methods for excited states. Here we apply two approaches based on ...

Kowalczyk, Timothy Daniel

2012-01-01T23:59:59.000Z

412

Dissipative Waves Excited by Gravity-Wave Encounters with the Stably Stratified Planetary Boundary Layer  

Science Conference Proceedings (OSTI)

We suggest that the strata of strong echo returns frequently revealed by remote-sensor records of the stably stratified planetary bound layer (PBL) represent the wavefronts of dissipative waves (viscous and thermal-conduction waves) excited by ...

William H. Hooke; R. Michael Jones

1986-10-01T23:59:59.000Z

413

Proceedings of the 1984 workshop on high-energy excitations in condensed matter. Volume II  

SciTech Connect

This volume covers electronic excitations, momentum distributions, high energy photons, and a wrap-up session. Abstracts of individual items from the conference were prepared separately for the data base. (GHT)

Silver, R.N. (comp.)

1984-12-01T23:59:59.000Z

414

Single-phase Converter-less Excitation Synchronous Stand-along Wind Power Generator System.  

E-Print Network (OSTI)

??In this thesis, a single-phase converter-less excitation synchronous stand-along wind power generator system is proposed. In order to simplify the system and improve the system (more)

Lin, Chin-wei

2013-01-01T23:59:59.000Z

415

Design of decentralized multivariable excitation controllers in multimachine power systems by projective controls  

Science Conference Proceedings (OSTI)

A methodology for the design of decentralized multivariable excitation and controllers in multimachine power systems is developed using projective controls. The existing methodology, is extended to permit the coordinated design of AVR and PSS controllers in power systems.

Arnautovic, D.; Medanic, J.

1987-12-01T23:59:59.000Z

416

Energy-transfer dynamics of high-pressure rovibrationally excited molecular H2  

E-Print Network (OSTI)

vibrational state have been probed using coherent anti-Stokes Raman spectroscopy CARS ,6,7 resonantly enhanced hydrogen given the imminent conversion to a hydro- gen fuel economy and that vibrational excitation has

Augustine, Mathew P.

417

Analysis: Why Drug Porn Isn't Exciting Anymore By TED HESSON  

E-Print Network (OSTI)

Analysis: Why Drug Porn Isn't Exciting Anymore By TED HESSON Dec. 20, 2012-- The Imagery of pornography: like war porn, torture porn or the standard naked-people porn, drug porn offers up a taste

Fernandez, Eduardo

418

Probing Chemical Reactions: Evidence for Exploration of an Excited Potential Energy Surface at Thermal Energies  

E-Print Network (OSTI)

at Thermal Energies Author(s): Michael D. Barnes, Philip R. Brooks, R. F. Curl, Bruce R. Johnson SourceProbing Chemical Reactions: Evidence for Exploration of an Excited Potential Energy Surface

Brooks, Philip R.

419

Excitation of Langmuir wave turbulence in high-frequency (HF) pump waves over Gakona, Alaska  

E-Print Network (OSTI)

(cont.) Investigated in this thesis are the excitation and observation of Langmuir wave turbulence caused by the parametric decay instability (PDI) in high-frequency space plasma heating experiments conducted at the NSF/DoD ...

Rokusek, Daniel L

2007-01-01T23:59:59.000Z

420

Time-domain non-Monte Carlo noise simulation for nonlinear dynamic circuits with arbitrary excitations  

Science Conference Proceedings (OSTI)

A new, time-domain, non-Monte Carlo method for computer simulation of electrical noise in nonlinear dynamic circuits with arbitrary excitations is presented. This time-domain noise simulation ...

Alper Demir; Edward W. Y. Liu; Alberto L. Sangiovanni-Vincentelli

1994-11-01T23:59:59.000Z

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


421

Spatio-temporal theory of lasing action in optically-pumped rotationally excited molecular gases  

E-Print Network (OSTI)

We investigate laser emission from optically-pumped rotationally excited molecular gases confined in a metallic cavity. To this end, we have developed a theoretical framework able to accurately describe, both in the spatial ...

Chua, Song-Liang

422

Shear Excitation of Atmospheric Gravity Waves. Part II: Nonlinear Radiation from a Free Shear Layer  

Science Conference Proceedings (OSTI)

This paper addresses the efficiency and characteristics of two mechanisms that have been proposed to account for the excitation of radiating gravity waves by Kelvin-Helmholtz (KH) instabilities at a free shear layer in a stratified atmosphere. ...

David C. Fritts

1984-02-01T23:59:59.000Z

423

Simultaneous ionization-excitation of helium to He ,,2p... magnetic sublevels by proton impact  

E-Print Network (OSTI)

-5698 Received 3 October 2001; published 12 December 2001 Experimental magnetic substate cross section ratios 0 ionization- excitation mechanism from the He(1s2 ) 1 S ground state to the final ionic state He (2p) 2 P0

Godunov, Alexander L.

424

Investigation of phonon excitations in {sup 114}Cd with the (n,n{sup '}{gamma}) reaction  

SciTech Connect

Properties of low-spin states in {sup 114}Cd have been studied with the (n,n{sup '}{gamma}) reaction. Gamma-ray angular distributions and excitation functions have been used to characterize the decays of the excited levels. Level lifetimes have been obtained with the Doppler-shift attenuation method. Sixteen new levels and many new transitions have been suggested below 3.5 MeV in excitation energy. Levels belonging to the phonon multiplets have been proposed based on their decay patterns and collectivity, and the existing intruder structure has been extended. A two-phonon 1{sub ms}{sup +} state has been suggested. Excitation of the hexadecapole moment has been considered. Data have been compared with the theoretical calculations of the interacting boson model.

Bandyopadhyay, D.; Lesher, S. R.; Fransen, C.; Boukharouba, N.; McEllistrem, M. T. [Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506-0055 (United States); Garrett, P. E.; Green, K. L. [Department of Physics, University of Guelph, Guelph, Ontario N1G2W1 (Canada); Yates, S. W. [Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506-0055 (United States); Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055 (United States)

2007-11-15T23:59:59.000Z

425

Comments on "Near-field interference for the unidirectional excitation of electromagnetic guided modes"  

E-Print Network (OSTI)

Rodriguez-Fortuno et al. (19 April 2013, p. 330) reported the unidirectional excitation of electromagnetic guided modes via the oblique illumination of a circularly polarized light. This comment points out that the same scheme was addressed in our a-year-ahead paper and that magnetic dipoles play a key role in the unidirectional excitation which was neglected in Rodriguez-Fortuno et al.'s report.

Lee, Seung-Yeol; Kim, Kyoung-Youm; Lee, Byoungho

2013-01-01T23:59:59.000Z

426

Direct connection of series self-excited generators and HVDC converters  

Science Conference Proceedings (OSTI)

An alternative and simpler solution is proposed for the direct connection of generators to HVdc converters. The generator exciter windings are connected in series with the output of the HVdc converter and take the place of the conventional smoothing reactor. Existing steady state and time domain simulation programs are modified to represent the behavior of the series direct connection scheme. It is shown that series excitation extends naturally the power transmission capability and permits fast fault clearances.

Arrillaga, J.; Macdonald, S.J.; Watson, N.R.; Watson, S. (Univ. Canterbury, Christchurch (New Zealand))

1993-10-01T23:59:59.000Z

427

Determination of ultratrace levels of uranium by selective laser excitation of precipitates  

SciTech Connect

Selective excitation of probe ion luminescence (SEPIL) is applied to the analysis of uranium by coprecipitation into calcium fluoride. Subsequent ignition of the precipitate in air yields intense fluorescence transitions from UO/sub 6//sup 6 -/ species which can be selectively excited with a narrow band dye laser system. A detection limit of 0.4 pg/mL is obtained. The interference effects of several ions are also presented.

Johnston, M.V.; Wright, J.C.

1981-06-01T23:59:59.000Z

428

Chaotic Vibration of a Quarter-Car Model Excited by the Road Surface Profile  

E-Print Network (OSTI)

The Melnikov criterion is used to examine a global homoclinic bifurcation and transition to chaos in the case of a quarter car model excited kinematically by the road surface profile. By analyzing the potential an analytic expression is found for the homoclinic orbit. By introducing an harmonic excitation term and damping as perturbations, the critical Melnikov amplitude of the road surface profile is found, above which the system can vibrate chaotically.

Grzegorz Litak; Marek Borowiec; Michael I. Friswell; Kazimierz Szabelski

2006-01-14T23:59:59.000Z

429

Dissociative excitation as the source of neutral atoms in hydrogen discharges  

DOE Green Energy (OSTI)

Electron impact dissociative excitation of H/sub 2/ molecules is identified as the origin of the narrow width and structure of Balmer lines observed in various low density hydrogen discharges. On the basis of this data and estimates of the rates of competing processes in plasmas, dissociative excitation, together with other molecular reactions, is proposed as the source of neutral atoms and protons in these discharges.

McNeill, D.H.

1980-01-01T23:59:59.000Z

430

VUV generation by adiabatically expanded and excited by a DC electrical discharge Argon gas  

Science Conference Proceedings (OSTI)

We investigate the emission of Argon (Ar) gas which is adiabatically expanded through a nozzle and excited using a DC electrical discharge. Because of the expansion and the electronic excitation, Ar dimers and clusters are formed, which give radiation in the second (2nd) and in the third (3rd) continua of Ar, centered at about 126 and 254 nm respectively. We particularly focus our study on the 2nd continuum, in order to develop a laser at this wavelength.

Pipergias, K.; Yasemidis, D.; Reppa, E.; Pentaris, D.; Efthimiopoulos, T. [Laser, Non linear and Quantum Optics Labs, Physics Department University of Patras, Patras, Greece 26500 (Greece); Merlemis, N. [Laser, Non linear and Quantum Optics Labs, Physics Department University of Patras, Patras, Greece 26500 (Greece); TEI of Athens, Phys. Chem. and Mater. Tech. Department, Athens, Greece, 12 210 (Greece); Giannetas, V. [Physics Department, University of Patras, Patras, Greece 26500 (Greece)

2010-11-10T23:59:59.000Z

431

Parity non-conservation in nuclear excitation by circularly polarized photon beam  

E-Print Network (OSTI)

We show that the asymmetries in the nuclear resonance fluorescence processes with a circular polarized photon beam may be used as a tool for studying the parity non-conservation (PNC) in nuclei. The PNC asymmetry measurements both in exciting the parity doublet states and in exciting the discrete states near the ground states with parity mixing are discussed. We derived the formulae needed for measuring the PNC asymmetries.

A. I. Titov; M. Fujiwara; K. Kawase

2006-05-31T23:59:59.000Z

432

A Computational Study on the Thermal-Hydraulic Behavior of Supercritical Carbon Dioxide in Various Printed Circuit Heat Exchanger Designs  

E-Print Network (OSTI)

There has been an ever-increasing demand for power generation, which is predicted to grow as society becomes more advanced. However, tradition fossil fuels are beginning to deplete, and there is a great necessity for alternative fuel sources that will bridge the gap between energy production and consumption. To decrease the high demand alternative fuel sources are gaining in popularity. The supercritical carbon dioxide Brayton power cycle has been proposed as a possible cycle for nuclear and concentrated solar power generation. Two main advantages of having supercritical carbon dioxide are the large property variations and component size associated with power cycle. Forced convection heat transfer of supercritical carbon dioxide in printed circuit heat exchanger geometries were investigated in the following study using a finite volume framework and the FLUENT 12.1 code. The geometries of interest were: non- chamfered zig-zag, chamfered zig-zag, and air foil. Flow through the three geometries was in the horizontal orientation and subject to a heating mode operation. A range of testing conditions were explored, including operating pressures between 7.5 to 10.2 MPa with the mass flux ranging from 326 to 762 kg/m2-s. Due to the turbulent nature of this problem, the k?E with enhanced wall treatment and shear stress transport k?? turbulence models were considered. With this addition a total of 54 simulations were performed. Results indicated that there was an increase in the heat transfer coefficient as the supercritical carbon dioxide reached the pseudocritical temperature, conversely as there was an increase in operating pressure, the heat transfer coefficient decreased. Nevertheless, this increase near the pseudocritical temperature was due to a sharp increase in the specific heat. Mass flux effects indicated that there was an increase in heat transfer as the mass flux was increased. This was due to the increase in Reynolds number near the pseudocritical temperature. Next, pressure losses were investigated for the three geometries. The non-chamfered zig-zag channel had the greatest pressure loss associated with it, while the air foil channel had the least. Based on the results, the ratio of the friction factor to heat transfer for the non-chamfered and chamfered zig-zag geometries were approximately 2.65 and 1.57 times higher than for the air foil, thus leading to the idea that the air foil channel may be best suited for practical applications. Finally, the simulation results were compared to experimental data and existing correlations. Many existing correlations failed to accurately predict the magnitude of heat transfer, although they exhibited a similar trend. A new correlation was developed for the zig-zag geometries based on the numerical data obtained during this investigation and published experimental data. The new correlation is able to predict the maximum heat transfer coefficient within 12.4%.

Matsuo, Bryce

2013-05-01T23:59:59.000Z

433

Neutrino-pair emission from nuclear de-excitation in core-collapse supernova simulations  

E-Print Network (OSTI)

We study the impact of neutrino-pair production from the de-excitation of highly excited heavy nuclei on core-collapse supernova simulations, following the evolution up to several 100 ms after core bounce. Our study is based on the AGILE-Boltztran supernova code, which features general relativistic radiation hydrodynamics and accurate three-flavor Boltzmann neutrino transport in spherical symmetry. In our simulations the nuclear de-excitation process is described in two different ways. At first we follow the approach proposed by Fuller and Meyer [Astrophys. J. 376,701 (1991)], which is based on strength functions derived in the framework of the nuclear Fermi-gas model of non-interacting nucleons. Secondly, we parametrize the allowed and forbidden strength distributions in accordance with measurements for selected nuclear ground states. We determine the de-excitation strength by applying the Brink hypothesis and detailed balance. For both approaches, we find that nuclear de-excitation has no effect on the supernova dynamics. However, we find that nuclear de-excitation is the leading source for the production of electron antineutrinos as well as heavy-lepton flavor (anti)neutrinos during the collapse phase. At sufficiently high densities, the associated neutrino spectra are influenced by interactions with the surrounding matter, making proper simulations of neutrino transport important for the determination of the neutrino-energy loss rate. We find that even including nuclear de-excitations, the energy loss during the collapse phase is overwhelmingly dominated by electron neutrinos produced by electron captures.

Tobias Fischer; Karlheinz Langanke; Gabriel Martinez-Pinedo

2013-09-17T23:59:59.000Z

434

Calculating excited states of molecular aggregates by the renormalized excitonic method  

E-Print Network (OSTI)

In this paper, we apply the recently developed \\emph{ab initio} renormalized excitonic method (REM) to the excitation energy calculations of various molecular aggregates, through the extension of REM to the time-dependent density functional theory (TDDFT). Tested molecular aggregate systems include one-dimensional hydrogen-bonded water chains, ring crystals with $\\pi$-$\\pi$ stacking or van-der Waals interactions and the general aqueous systems with polar and non-polar solutes. The basis set factor as well as the effect of the exchange-correlation functionals are also investigated. The results indicate that the REM-TDDFT method with suitable basis set and exchange-correlation functionals can give good descriptions of excitation energies and excitation area for lowest electronic excitations in the molecular aggregate systems with economic computational costs. It's shown that the deviations of REM-TDDFT excitation energies from those by standard TDDFT are much less than 0.1 eV and the computational time can be r...

Ma, Yingjin

2013-01-01T23:59:59.000Z

435

Quantum entanglement for two electrons in the excited states of helium-like systems  

E-Print Network (OSTI)

The quantum entanglement for the two electrons in the excited states of the helium-like atom/ions is investigated using the two-electron wave functions constructed by the B-spline basis. As a measure of the spatial (electron-electron orbital) entanglement, the von Neumann entropy and linear entropy of the reduced density matrix are calculated for the 1s2s 1,3S excited states for systems with some selected Z values from Z=2 to Z=100. Results for the helium atom are compared with other available calculations. We have also investigated the entropies for these excited states when the nucleus charge is reduced from Z=2 to Z=1. At such a critical charge, all the singly-excited states of this system become unbound, and the linear entropies and the von Neumann entropies for the excited states are approaching 1/2 and 1, respectively, the limits for the entropies when one electron is bound to the nucleus, and the other being free.

Yen-Chang Lin; Yew Kam Ho

2013-07-21T23:59:59.000Z

436

Quantum entanglement for two electrons in the excited states of helium-like systems  

E-Print Network (OSTI)

The quantum entanglement for the two electrons in the excited states of the helium-like atom/ions is investigated using the two-electron wave functions constructed by the B-spline basis. As a measure of the spatial (electron-electron orbital) entanglement, the von Neumann entropy and linear entropy of the reduced density matrix are calculated for the 1s2s 1,3S excited states for systems with some selected Z values from Z=2 to Z=100. Results for the helium atom are compared with other available calculations. We have also investigated the entropies for these excited states when the nucleus charge is reduced from Z=2 to Z=1. At such a critical charge, all the singly-excited states of this system become unbound, and the linear entropies and the von Neumann entropies for the excited states are approaching 1/2 and 1, respectively, the limits for the entropies when one electron is bound to the nucleus, and the other being free.

Lin, Yen-Chang

2013-01-01T23:59:59.000Z

437

Excitation-emission spectra and fluorescence quantum yields for fresh and aged biogenic secondary organic aerosols  

SciTech Connect

Certain biogenic secondary organic aerosols (SOA) become absorbent and fluorescent when exposed to reduced nitrogen compounds such as ammonia, amines and their salts. Fluorescent SOA may potentially be mistaken for biological particles by detection methods relying on fluorescence. This work quantifies the spectral distribution and effective quantum yields of fluorescence of SOA generated from two monoterpenes, limonene and a-pinene, and two different oxidants, ozone (O3) and hydroxyl radical (OH). The SOA was generated in a smog chamber, collected on substrates, and aged by exposure to ~100 ppb ammonia vapor in air saturated with water vapor. Absorption and excitation-emission matrix (EEM) spectra of aqueous extracts of aged and control SOA samples were measured, and the effective absorption coefficients and fluorescence quantum yields (~0.005 for 349 nm excitation) were determined from the data. The strongest fluorescence for the limonene-derived SOA was observed for excitation = 420+- 50 nm and emission = 475 +- 38 nm. The window of the strongest fluorescence shifted to excitation = 320 +- 25 nm and emission = 425 +- 38 nm for the a-pinene-derived SOA. Both regions overlap with the excitation-emission matrix (EEM) spectra of some of the fluorophores found in primary biological aerosols. Our study suggests that, despite the low quantum yield, the aged SOA particles should have sufficient fluorescence intensities to interfere with the fluorescence detection of common bioaerosols.

Lee, Hyun Ji; Laskin, Alexander; Laskin, Julia; Nizkorodov, Sergey A.

2013-05-10T23:59:59.000Z

438

Self-pulsations and excitability in optically injected quantum-dot lasers: Impact of the excited states and spontaneous emission noise  

SciTech Connect

We study the dynamics of an optically injected quantum-dot laser accounting for excited states. Mapping of the bifurcations in the plane frequency detuning vs. injection strength shows that the relaxation rate scales the regions of locking and single- and double-period solutions, while the capture rate has a minor effect. Within the regions of time-periodic solutions, close to the saddle-node bifurcation boundary, we identify subregions where the output signal resembles excitable pulses as a result of the bottleneck phenomenon. We show that such emission is determined mainly by fluctuations in the occupation of the excited states. The interpulse time follows an inverse square root scaling law as a function of the detuning. In a deterministic system the pulses are periodic regardless of the detuning, but in the presence of noise, close to the locking region, the interpulse time follows a positively skewed normal distribution. For a fixed frequency detuning, increasing the noise strength can shift the mean of the interpulse time distribution and make the pulsations more periodic.

Olejniczak, Lukasz [Department of Applied Physics and Photonics, Brussels Photonics Team B-PHOT, Vrije Universiteit Brussel, 2 Pleinlaan, B-1050 Brussels (Belgium); SUPELEC, OPTEL, and LMOPS EA 4423 (Laboratoire Materiaux Optiques, Photonique et Systemes), 2 rue Edouard Belin, F-57070 Metz (France); Panajotov, Krassimir [Department of Applied Physics and Photonics, Brussels Photonics Team B-PHOT, Vrije Universiteit Brussel, 2 Pleinlaan, B-1050 Brussels (Belgium); Institute of Solid State Physics, 72 Tzarigradsko Chaussee Boulevard, 1784 Sofia (Bulgaria); Thienpont, Hugo [Department of Applied Physics and Photonics, Brussels Photonics Team B-PHOT, Vrije Universiteit Brussel, 2 Pleinlaan, B-1050 Brussels (Belgium); Sciamanna, Marc [SUPELEC, OPTEL, and LMOPS EA 4423 (Laboratoire Materiaux Optiques, Photonique et Systemes), 2 rue Edouard Belin, F-57070 Metz (France)

2010-08-15T23:59:59.000Z

439

Six ARPA-E Projects Illustrate Private Investors Excited About Clean Energy  

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

Six ARPA-E Projects Illustrate Private Investors Excited About Six ARPA-E Projects Illustrate Private Investors Excited About Clean Energy Innovation Six ARPA-E Projects Illustrate Private Investors Excited About Clean Energy Innovation February 3, 2011 - 12:00am Addthis Washington, DC - In a little over one year, six projects that received a total of $23.6 million in seed funding from the Department of Energy's Advanced Research Project Agency - Energy (ARPA-E) have generated more than $100 million in outside private capital investment, Energy Secretary Steven Chu announced today. The six projects, which received between $750,000 and $8 million each, focus on improving solar and wind energy technologies and advanced battery storage. "This amount of private capital support indicates that the business community is hungry to invest in truly innovative solutions to the

440

Excitation and Ionization in H(1s)-H(1s) Collisions  

DOE Green Energy (OSTI)

Hydrogen atom - hydrogen atom scattering is a prototype for many of the fundamental principles of atomic collisions. In this work we present an approximation to the H+H system for scattering in the intermediate energy regime of 1 to 100 keV. The approximation ignores electron exchange and two-electron excitation by assuming that one of the atoms is frozen in the 1s state. We allow for the evolution of the active electron by numerically solving the 3D Schroedinger equation. The results capture many features of the problem and are in harmony with recent theoretical studies. Excitation and ionization cross sections are computed and compared to other theory and experiment. New insight into the mechanism of excitation and ionization is inferred from the solutions.

Riley, Merle E.; Ritchie, A. Burke

1999-07-15T23:59:59.000Z

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


441

DOE Science Showcase - Exciting Higgs Boson Research | OSTI, US Dept of  

Office of Scientific and Technical Information (OSTI)

Exciting Higgs Boson Research Exciting Higgs Boson Research Credit: Claudia Marcelloni, CERN Some of the most exciting research happening in recent decades has been the observation and tentative confirmation of the elusive subatomic particle known as the Higgs boson at the Large Hadron Collider at CERN, Geneva, Switzerland. These findings, produced from one of the largest scientific experiments ever conducted, have provided a direction for the exploration and stringent testing of the Standard Model of physics and if it should be changed as well as new research on models of physics beyond the Standard Model. Read in detail about the Higgs boson experiments, new accelerator designs, and further explorations in Dr. William Watson's latest white paper In the OSTI Collections: the Higgs Boson.

442

Dispersion relations of externally and thermally excited dust lattice modes in 2D complex plasma crystals  

SciTech Connect

The dispersion relations of the externally and thermally (naturally) excited dust lattice modes (both longitudinal and transverse) in two-dimensional Debye-Yukawa complex plasma crystals are investigated. The dispersion relations are calculated numerically by taking the neutral gas damping effects into account and the numerical results are in agreement with the experimental data given by Nunomura et al.[Phys. Rev. E 65, 066402 (2002)]. It is found that for the mode excited by an external disturbance with a real frequency, the dispersion properties are changed at a critical frequency near where the group velocity of the mode goes to zero. Therefore, the high frequency branch with negative dispersion cannot be reached. In contrast, for the thermally excited mode, the dispersion curve can extend all the way to the negative dispersion region, while a 'cut-off' wave number exists at the long wavelength end of the dispersion in the transverse mode.

Yang Xuefeng; Cui Jian; Zhang Yuan [School of Mathematical Sciences, Dalian University of Technology, Dalian 116024 (China); Liu Yue [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China)

2012-07-15T23:59:59.000Z

443

Theoretical characterization of excitation energy transfer in chlorosome light-harvesting antennae from green sulfur bacteria  

E-Print Network (OSTI)

Chlorosomes are the largest and most efficient natural light-harvesting antenna systems. They contain thousands of pigment molecules - bacteriochlorophylls (BChls)- that are organized into supramolecular aggregates and form a very efficient network for excitonic energy migration. Here, we present a theoretical study of excitation energy transfer (EET) in the chlorosome based on experimental evidence of the molecular assembly. Our model for the exciton dynamics throughout the antenna combines a stochastic time propagation of the excitonic wave function with molecular dynamics simulations of supramolecular structure, and electronic structure calculations of the excited states. The simulation results reveal a detailed picture of the EET in the chlorosome. Coherent energy transfer is significant only for the first 50 fs after the initial excitation, and the wavelike motion of the exciton is completely damped at 100 fs. Characteristic time constants of incoherent energy transfer, subsequently, vary from 1 ps to se...

Fujita, Takatoshi; Saikin, Semion K; Brookes, Jennifer C; Aspuru-Guzik, Alan

2013-01-01T23:59:59.000Z

444

Excitation of electrostatic plasma waves using a dielectric covered metallic electrode  

Science Conference Proceedings (OSTI)

Plasma response to high positive and negative voltage pulses is studied using pulsed capacitive excitation in a uniform and unmagnetized plasma. The positive or negative voltage pulse is applied to a metallic electrode, covered by a dielectric (Kapton) film, immersed in a low pressure argon plasma. The pulse magnitude is much greater than the electron temperature (U{sub 0} >> kT{sub e}/e). Experiments are carried out for different plasma parameters, to find how the plasma perturbations propagate for various applied pulse widths in comparison to ion plasma period ( f{sub i}{sup -1}). Plasma perturbations are studied by varying the thickness of the dielectric. For positive pulse bias, depending on the dielectric thickness, excitation of solitary electron holes, or solitary ion holes are observed. For negative pulse bias, varying the dielectric thicknesses, only ion rarefaction waves are excited.

Kar, S.; Mukherjee, S. [Institute for Plasma Research, Bhat, Gandhinagar-382 428, Gujarat (India)

2011-11-15T23:59:59.000Z

445

Limitation of cross-excitation instability in a relativistic Cerenkov generator with coaxial slow wave structure  

Science Conference Proceedings (OSTI)

The operation in the cross-excitation instability regimes for relativistic backward wave oscillators has been reported and studied in some earlier papers. In the experiment of a relativistic Cerenkov generator with coaxial slow wave structure (CRCG), the cross-excitation instability has also been observed by us. In this paper, experimental results for the CRCG operating in this regime are given, and an explanation is provided to account for the appearance of the instability. Based on this explanation, two types of reflectors, i.e., coaxial Bragg reflectors and cutoff necks, are adopted to restrain the cross-excitation instability by increasing the reflection coefficient at the entrance of the coaxial slow wave structure.

Xiao Renzhen; Zhang Lijun; Liang Tiezhu; Teng Yan; Chen Changhua; Shao Hao; Liu Guozhi [Northwest Institute of Nuclear Technology, Xi'an 710024 (China); Lin Yuzheng [Tsinghua University, Beijing 100084 (China)

2008-05-15T23:59:59.000Z

446

Interaction-induced excited-band condensate in a double-well optical lattice  

Science Conference Proceedings (OSTI)

We show theoretically that interaction effects in a double-well optical lattice can induce condensates in an excited band. For a symmetric double-well lattice, bosons condense into the bottom of the excited band at the edge of the Brillouin zone if the chemical potential is above a critical value. For an asymmetric lattice, a condensate with zero momentum is automatically induced in the excited band by the condensate in the lowest band. This is due to a combined effect of interaction and lattice potential, which reduces the band gap and breaks the inversion symmetry. Our work can be generalized to a superlattice composed of multiple-well potentials at each lattice site, where condensates can be induced in even higher bands.

Zhou Qi; Das Sarma, S. [Joint Quantum Institute, Department of Physics, University of Maryland, College Park, Maryland 20742 (United States); Condensed Matter Theory Center, Department of Physics, University of Maryland, College Park, Maryland 20742 (United States); Porto, J. V. [Joint Quantum Institute, Department of Physics, University of Maryland, College Park, Maryland 20742 (United States)

2011-09-15T23:59:59.000Z

447

Vanishing N=20 Shell Gap: Study of Excited States in {sup 27,28}Ne  

Science Conference Proceedings (OSTI)

This Letter reports on the {sup 1}H({sup 28}Ne,{sup 28}Ne) and {sup 1}H({sup 28}Ne,{sup 27}Ne) reactions studied at intermediate energy using a liquid hydrogen target. From the cross section populating the first 2{sup +} excited state of {sup 28}Ne, and using the previously determined B(E2) value, the neutron quadrupole transition matrix element has been calculated to be M{sub n}=13.8{+-}3.7 fm{sup 2}. In the neutron knockout reaction, two low-lying excited states were populated in {sup 27}Ne. Only one of them can be interpreted by the sd shell model while the additional state may intrude from the fp shell. These experimental observations are consistent with the presence of fp shell configurations at low excitation energy in {sup 27,28}Ne nuclei caused by a vanishing N=20 shell gap at Z=10.

Dombradi, Zs.; Fueloep, Zs. [Institute of Nuclear Research of the Hungarian Academy of Sciences, P.O. Box 51, Debrecen, H-4001 (Hungary); Elekes, Z. [Institute of Nuclear Research of the Hungarian Academy of Sciences, P.O. Box 51, Debrecen, H-4001 (Hungary); Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan); Saito, A.; Baba, H.; Demichi, K.; Gomi, T.; Hasegawa, H.; Kanno, S.; Kawai, S.; Kurita, K.; Matsuyama, Y.; Sakai, H.K.; Takeshita, E.; Togano, Y.; Yamada, K. [Rikkyo University, 3 Nishi-Ikebukuro, Toshima, Tokyo 171 (Japan); Aoi, N.; Ishihara, M.; Kishida, T.; Kubo, T. [Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)] (and others)

2006-05-12T23:59:59.000Z

448

Nature of yrast excitations near N=40: Level structure of Ni-67  

E-Print Network (OSTI)

Excited states in Ni-67 were populated in deep-inelastic reactions of a Ni-64 beam at 430 MeV on a thick U-238 target. A level scheme built on the previously known 13 micro-s isomer has been delineated up to an excitation energy of ~5.3 MeV and a tentative spin and parity of (21/2-). Shell model calculations have been carried out using two effective interactions in the f5/2pg9/2 model space with a Ni-56 core. Satisfactory agreement between experiment and theory is achieved for the measured transition energies and branching ratios. The calculations indicate that the yrast states are associated with rather complex configurations, herewith demonstrating the relative weakness of the N=40 subshell gap and the importance of multi particle-hole excitations involving the g9/2 neutron orbital.

S. Zhu; R. V. F. Janssens; M. P. Carpenter; C. J. Chiara; R. Broda; B. Fornal; N. Hoteling; W. Krolas; T. Lauritsen; T. Pawlat; D. Seweryniak; I. Stefanescu; J. R. Stone; W. B. Walters; X. Wang; J. Wrzesinski

2012-03-17T23:59:59.000Z

449

Nature of yrast excitations near N=40: Level structure of Ni-67  

E-Print Network (OSTI)

Excited states in Ni-67 were populated in deep-inelastic reactions of a Ni-64 beam at 430 MeV on a thick U-238 target. A level scheme built on the previously known 13 micro-s isomer has been delineated up to an excitation energy of ~5.3 MeV and a tentative spin and parity of (21/2-). Shell model calculations have been carried out using two effective interactions in the f5/2pg9/2 model space with a Ni-56 core. Satisfactory agreement between experiment and theory is achieved for the measured transition energies and branching ratios. The calculations indicate that the yrast states are associated with rather complex configurations, herewith demonstrating the relative weakness of the N=40 subshell gap and the importance of multi particle-hole excitations involving the g9/2 neutron orbital.

Zhu, S; Carpenter, M P; Chiara, C J; Broda, R; Fornal, B; Hoteling, N; Krolas, W; Lauritsen, T; Pawlat, T; Seweryniak, D; Stefanescu, I; Stone, J R; Walters, W B; Wang, X; Wrzesinski, J

2012-01-01T23:59:59.000Z

450

Comparison endpoint study of process plasma and secondary electron beam exciter optical emission spectroscopy  

Science Conference Proceedings (OSTI)

Traditionally process plasmas are often studied and monitored by optical emission spectroscopy. Here, the authors compare experimental measurements from a secondary electron beam excitation and direct process plasma excitation to discuss and illustrate its distinctiveness in the study of process plasmas. They present results that show excitations of etch process effluents in a SF{sub 6} discharge and endpoint detection capabilities in dark plasma process conditions. In SF{sub 6} discharges, a band around 300 nm, not visible in process emission, is observed and it can serve as a good indicator of etch product emission during polysilicon etches. Based on prior work reported in literature the authors believe this band is due to SiF{sub 4} gas phase species.

Stephan Thamban, P. L.; Yun, Stuart; Padron-Wells, Gabriel; Hosch, Jimmy W.; Goeckner, Matthew J. [Department of Mechanical Engineering, University of Texas at Dallas, 800W Campbell Road, Richardson, Texas 75080 (United States); Department of Electrical Engineering, University of Texas at Dallas, 800W Campbell Road, Richardson, Texas 75080 (United States); Verity Instruments, Inc., 2901 Eisenhower Street, Carrollton, Texas 75007 (United States); Department of Mathematical Sciences, University of Texas at Dallas, 800 W Campbell Road, Richardson, Texas 75080 (United States)

2012-11-15T23:59:59.000Z

451

ALSNews Vol. 274  

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

4 Print 4 Print Contents Magnetic vortex core reversal by low-field excitations Optical upgrades increase performance of Sector 5 beamlines Users benefit from restructuring of ALS Beamline Coordination Group Safety First: Be aware of construction site boundaries In Memoriam: The ALS remembers Al Baez and Jim Patel American Physical Society awards go to Franz Himpsel and Sam Bader 9/11 dust analyzed by ALS user Tom Cahill for Esquire magazine Register now for Coherence 2007 News Links Bacterial walls come tumbling down Driving down the greener road New nanoscale engineering breakthrough points To hydrogen-powered vehicles Operations RING STATUS SCHEDULES For the user runs from February 26 - March 26 (including two-bunch user operations from March 14- 25): Beam reliability*: 87.6%

452

Excitation of Accelerating Plasma Waves by Counter-propagating Laser Beams  

SciTech Connect

Generation of accelerating plasma waves using two counter-propagating laser beams is considered. Colliding-beam accelerator requires two laser pulses: the long pump and the short timing beam. We emphasize the similarities and differences between the conventional laser wakefield accelerator and the colliding-beam accelerator (CBA). The highly nonlinear nature of the wake excitation is explained using both nonlinear optics and plasma physics concepts. Two regimes of CBA are considered: (i) the short-pulse regime, where the timing beam is shorter than the plasma period, and (ii) the parametric excitation regime, where the timing beam is longer than the plasma period. Possible future experiments are also outlined.

Gennady Shvets; Nathaniel J. Fisch; and Alexander Pukhov

2001-08-30T23:59:59.000Z

453

On resonant excitations of high-n magnetohydrodynamic modes by energetic/alpha particles in tokamaks  

Science Conference Proceedings (OSTI)

Analytical theories for the excitations in tokamaks of magnetohydrodynamic (MHD) modes with large toroidal mode numbers (n>>1) are presented. Specifically, only instability mechanisms due to resonances with energetic ions/alpha particles are considered. It is noted that, while trapped energetic particles contribute to the ideal region, circulating energetic particles contribute mainly to the singular layer dynamics. A unified dispersion relation manifesting both fishbone-like modes and beam transit-resonance modes is then driven. Finally, we also analyze the stability property of toroidicity-induced shear Alfven waves excited via transit resonances with alpha particles in ignited tokamaks. 11 refs.

Chen, Liu

1989-03-01T23:59:59.000Z

454

High pressure study of changes in energy and intensity of excitations in crystalline metal glyoximes  

SciTech Connect

The effect of high pressure has been measured on the energy and integrated intensity of electronic excitations of several layered crystals of glyoximes containing Ni, Pd, or Pt. Large changes in both energy and intensity were observed, both of which were completely reversible. The shifts in energy with pressure, are explained in terms of the relative spatial extent of the outer d and p orbitals of Ni, Pd, and Pt. The effects of back donation from the ligands and intensity borrowing from the higher energy charge transfer excitations are considered as possible causes of the observed intensity changes. It was concluded that intensity borrowing was the major cause of the observed changes.

Tkacz, M.; Drickamer, H.G.

1986-07-15T23:59:59.000Z

455

Transverse-type laser assembly using induced electrical discharge excitation and method  

DOE Patents (OSTI)

A transverse-type laser assembly is disclosed herein. This assembly defines a laser cavity containing a vapor or gaseous substance which lases when subjected to specific electrical discharge excitation between a pair of spaced-apart electrodes located within the cavity in order to produce a source of light. An arrangement located entirely outside the laser cavity is provided for inducing a voltage across the electrodes within the cavity sufficient to provide the necessary electrical discharge excitation to cause a vapor substance between the electrodes to lase. 3 figures.

Ault, E.R.

1994-04-19T23:59:59.000Z

456

Transverse-type laser assembly using induced electrical discharge excitation and method  

DOE Patents (OSTI)

A transverse-type laser assembly is disclosed herein. This assembly defines a laser cavity containing a vapor or gaseous substance which lases when subjected to specific electrical discharge excitation between a pair of spaced-apart electrodes located within the cavity in order to produce a source of light. An arrangement located entirely outside the laser cavity is provided for inducing a voltage across the electrodes within the cavity sufficient to provide the necessary electrical discharge excitation to cause a vapor substance between the electrodes to lase.

Ault, Earl R. (Livermore, CA)

1994-01-01T23:59:59.000Z

457

Tomography of a High-Purity Narrowband Photon From a Transient Atomic Collective Excitation  

E-Print Network (OSTI)

We demonstrate the efficient heralded generation of high purity narrow-bandwidth single photons from a transient collective spin excitation in a hot atomic vapour cell. Employing optical homodyne tomography, we fully reconstruct the density matrix of the generated photon and observe a Wigner function reaching the zero value without correcting for any inefficiencies. The narrow bandwidth of the photon produced is accompanied by a high generation rate yielding a high spectral brightness. The source is therefore compatible with atomic-based quantum memories as well as other applications in light-atom interfacing. This work paves the way to preparing and measuring arbitrary superposition states of collective atomic excitations.

MacRae, A; Lvovsky, A I

2011-01-01T23:59:59.000Z

458

Full counting statistics of laser excited Rydberg aggregates in a one-dimensional geometry  

E-Print Network (OSTI)

We experimentally study the full counting statistics of few-body Rydberg aggregates excited from a quasi-one-dimensional Rydberg gas. We measure asymmetric excitation spectra and increased second and third order statistical moments of the Rydberg number distribution, from which we determine the average aggregate size. Direct comparisons with numerical simulations reveal the presence of liquid-like spatial correlations, and indicate sequential growth of the aggregates around an initial grain. These findings demonstrate the importance of dissipative effects in strongly correlated Rydberg gases and introduce a way to study spatio-temporal correlations in strongly-interacting many-body quantum systems without imaging.

H. Schempp; G. Gnter; M. Robert-de-Saint-Vincent; C. S. Hofmann; D. Breyel; A. Komnik; D. W. Schnleber; M. Grttner; J. Evers; S. Whitlock; M. Weidemller

2013-08-01T23:59:59.000Z

459

Lifetimes of electronic excitations in unoccupied surface states and the image potential states on Pd(110)  

SciTech Connect

The contribution of inelastic electron-electron scattering to the decay rate of excitations in the surface states and first two image potential states at the Y-bar point on the surface is calculated in the GW approximation, and the quasi-momentum dependence of the corresponding contribution for the surface states is analyzed. The mechanisms of electron scattering in these states are studied, and the temperature dependence of the excitation lifetime is analyzed with allowance for the contribution of the electron-phonon interaction calculated earlier.

Tsirkin, S. S., E-mail: tsirkinss@gmail.com; Eremeev, S. V. [Tomsk State University (Russian Federation); Chulkov, E. V. [San Sebastian/Donostia, Donostia International Physics Center (DIPC) (Spain)

2012-10-15T23:59:59.000Z

460

Ultrashort-pulse-train pump and dump excitation of a diatomic molecule  

SciTech Connect

An excitation scheme is proposed for transferring population between ground-vibrational levels of a molecule. The transfer is accomplished by pumping and dumping population with a pair of coherent ultrashort-pulse trains via a stationary state. By mismatching the teeth of the frequency combs associated with the pulse trains to the vibrational levels, high selectivity in the excitation, along with high transfer efficiency, is predicted. The pump-dump scheme does not suffer from spontaneous emission losses, it is insensitive to the pump-dump-train delay, and it requires only basic pulse shaping.

Araujo, Luis E. E. de [Instituto de Fisica 'Gleb Wataghin', Universidade Estadual de Campinas, Campinas-Sao Paulo 13083-970 (Brazil)

2010-09-15T23:59:59.000Z

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


461

Simple Model of the (alpha)(omega) Dynamo: Self-Excited Spheromaks  

Science Conference Proceedings (OSTI)

The astrophysical {alpha}{omega} dynamo converting angular momentum to magnetic energy can be interpreted as a self-excited Faraday dynamo together with magnetic relaxation coupling the dynamo poloidal field to the toroidal field produced by dynamo currents. Since both toroidal and poloidal fields are involved, the system can be modeled as helicity creation and transport, in a spheromak plasma configuration in quasi-equilibrium on the time scale of changes in magnetic energy. Neutral beams or plasma gun injection across field lines could create self-excited spheromaks in the laboratory.

Fowler, T K

2010-01-26T23:59:59.000Z

462

Study of intermediates from transition metal excited-state electron-transfer reactions  

SciTech Connect

Conventional and fast-kinetics techniques of photochemistry, photophysics, radiation chemistry, and electrochemistry were used to study the intermediates involved in transition metal excited-state electron-transfer reactions. These intermediates were excited state of Ru(II) and Cr(III) photosensitizers, their reduced forms, and species formed in reactions of redox quenchers and electron-transfer agents. Of particular concern was the back electron-transfer reaction between the geminate pair formed in the redox quenching of the photosensitizers, and the dependence of its rate on solution medium and temperature in competition with transformation and cage escape processes. (DLC)

Hoffman, M.Z.

1992-07-31T23:59:59.000Z

463

Threshold vibrational excitation of CO{sub 2} by slow electrons  

DOE Green Energy (OSTI)

Threshold structures, reminiscent of those seen in the polar hydrogen halides, have recently been observed in the cross sections for electron impact excitation of certain vibrational levels of the non-polar CO2 molecule. These structures occur at energies outside the range where shape resonances dominate the dynamics. We propose a virtual state model that describes the multi-dimensional nuclear dynamics during the collision and explains quantitatively the selectivity observed in the excitation of the Fermi dyad, as well as the pattern of threshold peaks and oscillations seen in the upper levels of the higher polyads.

Vanroose, Wim; Zhang, Zhiyong; McCurdy, C.W.; Rescigno, T.N.

2003-07-08T23:59:59.000Z

464

Resonant Spectroscopy of II-VI Self-Assembled Quantum Dots: Excited States and Exciton-LO Phonon Coupling  

E-Print Network (OSTI)

Using resonantly excited photoluminescence along with photoluminescence excitation spectroscopies, we study the carrier excitation processes in CdTe/ZnTe and CdSe/ZnSe self-assembled quantum dots. Photoluminescence excitation spectra of single CdTe quantum dots reflect two major mechanisms for carrier excitation: The first, associated with the presence of sharp and intense lines in the spectrum, is a direct excited state ? ground state transition. The second, associated with the appearance of up to four much broader excitation lines, is a LO phonon-assisted absorption directly into the quantum dot ground states. LO phonons with energies of both quantum dots and ZnTe barrier material are identified in the photoluminescence excitation spectra. Resonantly excited PL measurements for the dot ensemble as a function of excitation energy makes it possible to separate the contributions of these two mechanisms. We find that for CdTe quantum dots the distribution of excited states coupled to the ground states reflects the energy distribution of the quantum dot emission, but shifted up in energy by 100 meV. This large splitting between excited and ground states in CdTe quantum dots suggests strong spatial confinement. In contrast, the LO phonon-assisted absorption shows significant size selectivity. In the case of CdTe dots the exciton-LO phonon coupling is strongly enhanced for smaller-sized dots which have higher emission energies. In contrast, for CdSe quantum dots the exciton-LO phonon coupling is uniform over the ensemble ? that is, the energy distribution determines the intensities of LO phonon replicas. We show that for CdTe quantum dots after annealing, that is after an increase in the average dot size, the exciton-LO phonon interaction reflects the dot energy distribution, as observed for CdSe quantum dots.

T. A. Nguyen; S. Mackowski; H. E. Jackson; L. M. Smith; J. Wrobel; K. Fronc; G. Karczewski; J. Kossut; M. Dobrowolska J. K. Furdyna; W. Heiss

2003-09-17T23:59:59.000Z

465

G:\\sas\\divshar\\Curriculum Sheets\\PCE\\2007-2008 PCE Curriculum\\Origninals\\Paper Science 2007-2008.doc Last printed 5/24/2007 9:28:00 AM PAPER SCIENCE & ENGINEERING  

E-Print Network (OSTI)

-2008.doc Last printed 5/24/2007 9:28:00 AM PCE 415/515 (3) CHEMICAL KINETICS & REACTOR DESIGN Chemical engineering with a special focus on chemical engineering applications. In particular, this course will focus of the Paper & Chemical Engineering Department is to teach and prepare liberally educated, articulate

Dollar, Anna

466

Solar-Powered Robot Swarm Could Clean Oil : Discovery News http://news.discovery.com/tech/solar-powered-ocean-robots-clean-oil.html?print=true[8/30/2010 8:28:06 AM  

E-Print Network (OSTI)

Solar-Powered Robot Swarm Could Clean Oil : Discovery News http://news.discovery.com/tech/solar-powered-ocean-robots-clean-oil.html?print=true[8/30/2010 8:28:06 AM] Solar-Powered Robot Swarm Could Clean Oil Oil-absorbing nanomaterial a new solar-powered robot prototype equipped with nanotechnology designed by researchers at MIT

Rock, Chris

467

04/25/06Office of the Governor of the State of California Page 1 of 2http://www.gov.ca.gov/index.php?/print-version/executive-order/183/  

E-Print Network (OSTI)

and energy needs; and WHEREAS, ethanol is a renewable transportation biofuel that California consumes more of the future; and WHEREAS, biofuels can be a clean, renewable source for hydrogen; and WHEREAS, biofuels offer.gov.ca.gov/index.php?/print-version/executive-order/183/ 1. The following targets to increase the production and use of bioenergy, including ethanol

468

Print Story: Japan has told EU it is giving up on nuclear reactor bid:... http://news.yahoo.com/s/afp/20050622/wl_asia_afp/japaneufrancenuc... 1 of 1 6/22/05 12:12 AM  

E-Print Network (OSTI)

Print Story: Japan has told EU it is giving up on nuclear reactor bid:... http it is giving up on nuclear reactor bid: report 1 hour, 51 minutes ago Japan has told the European Union it will give up on hosting a revolutionary nuclear energy reactor after securing large deals in turn

469

ABC News: EU Threatens to Go It Alone on Nuclear Fusion http://abcnews.go.com/US/print?id=237927 1 of 2 11/9/04 8:33 AM  

E-Print Network (OSTI)

Union warned on Tuesday it may go ahead and build the world's first nuclear fusion reactor with whatever's nuclear reactors and weapons, which produce energy by blowing atoms apart. However, 50 years of researchABC News: EU Threatens to Go It Alone on Nuclear Fusion http://abcnews.go.com/US/print?id=237927 1

470

Journal of the Geological Society, London, Vol. 161, 2004, pp. 133145. Printed in Great Britain. Fossil-wood carbon-isotope stratigraphy of the non-marine Wealden Group  

E-Print Network (OSTI)

Journal of the Geological Society, London, Vol. 161, 2004, pp. 133­145. Printed in Great Britain. 133 Fossil-wood carbon-isotope stratigraphy of the non-marine Wealden Group (Lower Cretaceous-wood carbon-isotope data are presented for the Wessex Formation, a non-marine unit within the Lower Cretaceous

Hesselbo, Stephen P.

471

12/24/2006 02:23 PMLoading "Oil Addiction Weakens the U.S. -Issues 2007 -MSNBC.com" Page 1 of 2http://www.msnbc.msn.com/id/16299314/site/newsweek/print/1/displaymode/1098/  

E-Print Network (OSTI)

12/24/2006 02:23 PMLoading "Oil Addiction Weakens the U.S. - Issues 2007 - MSNBC.com" Page 1 of 2http://www.msnbc.msn.com/id/16299314/site/newsweek/print/1/displaymode/1098/ MSNBC.com Oil Addiction decades, energy has become a central problem in foreign policy. The surge in oil prices--and in oil

Deutch, John

472

Progress in Nuclear Energy. 1982, Vol. 9, pp. 223-232 007%6530/82/03223-1055.00/0 Printed in Great Britain. All rights reserved. Copyright 1982 Pergamon Press Ltd  

E-Print Network (OSTI)

BASED ON RESEARCH REACTORS: THEORY AND EXPERIMENT I. PAZSIT and I. Lux Central Research InstituteProgress in Nuclear Energy. 1982, Vol. 9, pp. 223-232 007%6530/82/03223-1055.00/0 Printed in Great for Physics, H-1525 Budapest 114, P. O. Box 49, Hungary ABSTRACT A concept for research reactor based noise

Pázsit, Imre

473

Interaction of highly vibrationally excited molecules with clean metal surfaces. Final technical report  

DOE Green Energy (OSTI)

The authors present results from a grant funded under the Department of Energy Office of Basic Energy Sciences. A collaboration between Prof. Alec Wodtke of the Department of Chemistry at UCSB and Daniel J. Auerbach of IBM Almaden Research Labs has allowed new experiments on the dynamics of surface chemical reactivity to be successfully executed. High quality data has been generated which provides an excellent test of theoretical models of surface reactivity, a topic of importance to catalysis. The authors have obtained the first experimental measurements on the influence of reactant velocity on the steric effect in a chemical reaction: the dissociative adsorption of hydrogen on copper. They have also designed and built a molecular beam scattering apparatus for the study of highly vibrationally excited molecules and their interactions with clean and oxidized metal surfaces. With this apparatus they have observed the vibrational energy exchange of highly vibrationally excited NO with an oxidized copper surface. Multi-quantum vibrational relaxation was found ({Delta}v = 1-5). Such remarkably strong and efficient vibrational energy transfer represents a qualitatively new phenomenon and is representative of the exciting new behavior that they had hoped might be observable in this project. Evidence of chemical reactivity of vibrationally excited NO on a clean copper surface was also found.

Wodtke, A.M. [Univ. of California, Santa Barbara, CA (United States). Dept. of Chemistry; Auerbach, D.J. [IBM Almaden Research Center, San Jose, CA (United States)

1998-11-01T23:59:59.000Z

474

Photoconductivity and luminescence in GaSe crystals at high levels of optical excitation  

Science Conference Proceedings (OSTI)

The photoconductivity and luminescence of GaSe layered crystals at high levels of optical excitation are studied experimentally. The specific features observed in the photoconductivity and photoluminescence spectra are controlled by the nonlinear optical absorption in the region of excitonic resonance.

Kyazym-zade, A. G.; Salmanov, V. M., E-mail: vagif_salmanov@yahoo.com; Salmanova, A. A. [Baku State University (Azerbaijan); Alieva, A. M.; Ibaeva, R. Z. [National Academy of Sciences, Institute of Physics (Azerbaijan)

2010-03-15T23:59:59.000Z

475

Method And System For Examining Biological Materials Using Low Power Cw Excitation Raman Spectroscopy.  

DOE Patents (OSTI)

A method and system for examining biological materials using low-power cw excitation Raman spectroscopy. A low-power continuous wave (cw) pump laser beam and a low-power cw Stokes (or anti-Stokes) probe laser beam simultaneously illuminate a biological material and traverse the biological material in collinearity. The pump beam, whose frequency is varied, is used to induce Raman emission from the biological material. The intensity of the probe beam, whose frequency is kept constant, is monitored as it leaves the biological material. When the difference between the pump and probe excitation frequencies is equal to a Raman vibrational mode frequency of the biological material, the weak probe signal becomes amplified by one or more orders of magnitude (typically up to about 10.sup.4 -10.sup.6) due to the Raman emission from the pump beam. In this manner, by monitoring the intensity of the probe beam emitted from the biological material as the pump beam is varied in frequency, one can obtain an excitation Raman spectrum for the biological material tested. The present invention may be applied to in the in vivo and/or in vitro diagnosis of diabetes, heart disease, hepatitis, cancers and other diseases by measuring the characteristic excitation Raman lines of blood glucose, cholesterol, serum glutamic oxalacetic transaminase (SGOT)/serum glutamic pyruvic transaminase (SGPT), tissues and other corresponding Raman-active body constituents, respectively.

Alfano, Robert R. (Bronx, NY); Wang, Wubao (Flushing, NY)

2003-05-06T23:59:59.000Z

476

SEARCHERS, THE SUBJECTS THEY SEARCH, AND SUFFICIENCY: A STUDY OF A LARGE SAMPLE OF EXCITE SEARCHES  

E-Print Network (OSTI)

enters a query of two or more terms, the Excite search engine ORs the terms together by default. #12;o, and the modifications to queries by users. Second, we examine the search terms, including the most commonly used search terms and the rank/frequency distribution of search terms. Finally, in order to get an indication

Jansen, James

477

Coded excitation of broadband terahertz using optical rectification in poled lithium niobate  

E-Print Network (OSTI)

Coded excitation of broadband terahertz using optical rectification in poled lithium niobate T optical rectification of femtosecond laser pulses in poled lithium niobate patterned with a 53-bit binary forms can be generated by optical rectification in poled lithium niobate PLN . A femtosecond laser pulse

Buma, Takashi

478

Isotope effects and Born-Oppenheimer breakdown in excited singlet states of the lithium dimer  

E-Print Network (OSTI)

Isotope effects and Born-Oppenheimer breakdown in excited singlet states of the lithium dimer A-Oppenheimer breakdown in four singlet electronic states correlating with (2s 2s), (2s 2p), and (2p 2p) lithium atoms , and 1 1 g states of the lithium dimer. This paper also reports Fourier transform measurements of the B

Le Roy, Robert J.

479

Renormalization of operators for excited-state hadrons in lattice QCD.  

SciTech Connect

One of the primary aims of lattice QCD is to accurately compute the spectrum of hadronic excitations from first principles. However, obtaining an accurate resolution of excited states using methods of lattice QCD is not a trivial problem due to faster decay of excited-states correlation functions in Euclidean space in comparison to those of ground states. To overcome this difficulty, anisotropic lattices with a finer temporal discretization are used. To go beyond the spectrum, in order to study the properties of the states, one needs to compute corresponding matrix elements. Thus, for example, the quark distribution amplitudes in mesons are given by matrix elements of quark bilinear operators, while in baryons, the corresponding quark distribution amplitudes are related to matrix elements of three-quark operators. To relate the matrix elements calculated on the lattice to those in the continuum, and hence to relate to the measured experimentally, it is necessary to evaluate matching coefficients. In this work we describe the calculation of the matching coefficients using perturbation theory for the improved anisotropic-clover fermion action used for our studies of excited states.

Ekaterina Mastropas, David Richards

2012-04-01T23:59:59.000Z

480

What is the Issue? There is a great deal of excitement about the green economy, clean  

E-Print Network (OSTI)

to legitimize public investment in "clean tech" firms via tax incentives, state and local economic developersWhat is the Issue? There is a great deal of excitement about the green economy, clean technology in renewable energy and energy efficiency are not well understood. Since these employment projections are used

Wang, Z. Jane

Note: This page contains sample records for the topic "low-field excitations print" from the National Library of EnergyBeta (NLEBeta).
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481

Energy conversion based on molecular excited states: Redox splitting in soluble polymers. Final report  

DOE Green Energy (OSTI)

A general method was developed for preparing complexes of Ru(II) with three different bidentate ligands; it is being extended to monodentate ligands for more synthetic versatility. This method was used to prepare a series of complexes with pre-designed absorption properties, with the goal of ``black absorbers`` for use as antenna chromophores in a light-to-chemical energy conversion array. The energy gap law for nonradiative decay was studied for preparing near-IR luminophores with long excited state lifetimes. The problem of destructive dd excited states in Ru(II) polypyridyl complexes was focused on, with success in preparing an extremely photo-inert complex with monodentate pyridine ligands. Time-resolved resonance Raman and infrared spectroscopy were used to study subtle excited state properties of complexes of Ru(II), Os(II), and Re(I). Success was achieved in controlled immobilization of d{sup 6} chromophores and quenchers on styrenic polymers. Having perfected our synthetic technique, we have begun to optimize the ground and excited state properties such as chromophore density, dipole orientation, and lifetime.

Meyer, T.J.

1995-12-31T23:59:59.000Z

482

Observation of excited state charge transfer with fs/ps-CARS  

Science Conference Proceedings (OSTI)

Excited state charge transfer processes are studied using the fs/ps-CARS probe technique. This probe allows for multiplexed detection of Raman active vibrational modes. Systems studied include Michler's Ketone, Coumarin 120, 4-dimethylamino-4{prime}-nitrostilbene, and several others. The vibrational spectrum of the para di-substituted benzophenone Michler's Ketone in the first excited singlet state is studied for the first time. It is found that there are several vibrational modes indicative of structural changes of the excited molecule. A combined experimental and theoretical approach is used to study the simplest 7-amino-4-methylcoumarin, Coumarin 120. Vibrations observed in FTIR and spontaneous Raman spectra are assigned using density functional calculations and a continuum solvation model is used to predict how observed modes are affected upon inclusion of a solvent. The low frequency modes of the excited state charge transfer species 4-dimethylamino-4{prime}-nitrostilbene are studied in acetonitrile. Results are compared to previous work on this molecule in the fingerprint region. Finally, several partially completed projects and their implications are discussed. These include the two photon absorption of Coumarin 120, nanoconfinement in cyclodextrin cavities and sensitization of titania nanoparticles.

Blom, Alex Jason

2009-08-01T23:59:59.000Z

483

UTILISATION D'UNE EXPRIENCE DE RSONANCE LECTRIQUE. RADIOFRQUENCE SUR DES NIVEAUX EXCITS DANS UN FAISCEAU  

E-Print Network (OSTI)

structures fines ou hyperfines des atomes hydro- génoïdes légers car les séparations entre niveaux sont alors détection optique d'une résonance électrique entre niveaux hydro- génoïdes sur un faisceau d'ions excités

Lombardi, Maurice

484

Measuring moment of inertia based on identification of nonlinear system featuring naught excitation  

Science Conference Proceedings (OSTI)

For large ammunitions and spacecrafts, friction moment and air resistance are major error resources in measuring moment of inertia (MOI). The paper proposes a novel measurement method based on compound pendulum, in which the whole measurement is considered ... Keywords: Naught excitation, air resistance, compound pendulum, friction moment, moment of inertia, nonlinear system, system identification

Wen Hou

2006-04-01T23:59:59.000Z

485

Shear viscosity of a highly excited string and the black hole membrane paradigm  

Science Conference Proceedings (OSTI)

The black hole membrane paradigm states that a certain viscous membrane seems to be sitting on a stretched horizon of a black hole from the viewpoint of a distant observer. We show that the shear viscosity of the fictitious membrane can be reproduced by a highly excited string covering the stretched horizon except for a numerical coefficient.

Sasai, Yuya [Helsinki Institute of Physics, University of Helsinki, P.O. Box 64, FIN-00014 Helsinki (Finland); Department of Physics, University of Helsinki, P.O. Box 64, FIN-00014 Helsinki (Finland); Zahabi, Ali [Department of Physics, University of Helsinki, P.O. Box 64, FIN-00014 Helsinki (Finland)

2011-01-15T23:59:59.000Z

486

Electron-impact excitation-autoionization of helium in the S-wave limit  

Science Conference Proceedings (OSTI)

Excitation of the autoionizing states of helium by electron impact is shown in calculations in the s-wave limit to leave a clear signature in the singly differential cross section for the (e,2e) process. It is suggested that such behavior should be seen generally in (e,2e) experiments on atoms that measure the single differential cross section.

Horner, Daniel A.; McCurdy, C. William; Rescigno, Thomas N.

2004-10-01T23:59:59.000Z

487

Role of Sustained Excitability of the Leg Motor Cortex After Transcranial Magnetic Stimulation in Associative Plasticity  

E-Print Network (OSTI)

Role of Sustained Excitability of the Leg Motor Cortex After Transcranial Magnetic Stimulation of the leg motor cortex after transcranial magnetic stimulation in asso- ciative plasticity. J Neurophysiol magnetic stimulation (TMS) produces specific changes to the motor-evoked potentials (MEPs) in lower leg

Gorassini, Monica

488

OTEC cold water pipe design for problems caused by vortex-excited oscillations  

DOE Green Energy (OSTI)

Vortex-excited oscillations of marine structures result in reduced fatigue life, large hydrodynamic forces and induced stresses, and sometimes lead to structural damage and to diestructive failures. The cold water pipe of an OTEC plant is nominally a bluff, flexible cylinder with a large aspect ratio (L/D = length/diameter), and is likely to be susceptible to resonant vortex-excited oscillations. The objective of this report is to survey recent results pertaining to the vortex-excited oscillations of structures in general and to consider the application of these findings to the design of the OTEC cold water pipe. Practical design calculations are given as examples throughout the various sections of the report. This report is limited in scope to the problems of vortex shedding from bluff, flexible structures in steady currents and the resulting vortex-excited oscillations. The effects of flow non-uniformities, surface roughness of the cylinder, and inclination to the incident flow are considered in addition to the case of a smooth cyliner in a uniform stream. Emphasis is placed upon design procedures, hydrodynamic coefficients applicable in practice, and the specification of structural response parameters relevant to the OTEC cold water pipe. There are important problems associated with in shedding of vortices from cylinders in waves and from the combined action of waves and currents, but these complex fluid/structure interactions are not considered in this report.

Griffin, O. M.

1980-03-14T23:59:59.000Z

489

Excited State Structural Dynamics of Carotenoids and ChargeTransfer Systems  

Science Conference Proceedings (OSTI)

This dissertation describes the development andimplementation of a visible/near infrared pump/mid-infrared probeapparatus. Chapter 1 describes the background and motivation ofinvestigating optically induced structural dynamics, paying specificattention to solvation and the excitation selection rules of highlysymmetric molecules such as carotenoids. Chapter 2 describes thedevelopment and construction of the experimental apparatus usedthroughout the remainder of this dissertation. Chapter 3 will discuss theinvestigation of DCM, a laser dye with a fluorescence signal resultingfrom a charge transfer state. By studying the dynamics of DCM and of itsmethyl deuterated isotopomer (an otherwise identical molecule), we areable to investigate the origins of the charge transfer state and provideevidence that it is of the controversial twisted intramolecular (TICT)type. Chapter 4 introduces the use of two-photon excitation to the S1state, combined with one-photon excitation to the S2 state of thecarotenoid beta-apo-8'-carotenal. These 2 investigations show evidencefor the formation of solitons, previously unobserved in molecular systemsand found only in conducting polymers Chapter 5 presents an investigationof the excited state dynamics of peridinin, the carotenoid responsiblefor the light harvesting of dinoflagellates. This investigation allowsfor a more detailed understanding of the importance of structuraldynamics of carotenoids in light harvesting.

Van Tassle, Aaron Justin

2006-09-01T23:59:59.000Z

490

Elastic, excitation, ionization and charge transfer cross sections of current interest in fusion energy research  

DOE Green Energy (OSTI)

Due to the present interest in modeling and diagnosing the edge and divertor plasma regions in magnetically confined fusion devices, we have sought to provide new calculations regarding the elastic, excitation, ionization, and charge transfer cross sections in collisions among relevant ions, neutrals, and isotopes in the low- to intermediate-energy regime. We summarize here some of our recent work.

Schultz, D.R.; Krstic, P.S.

1996-12-31T23:59:59.000Z

491

Life Cycle Management Plan for Main Generator and Exciter at Wolf Creek Generating Station: Generic Version  

Science Conference Proceedings (OSTI)

As the electric power industry becomes more competitive, life cycle management (LCM) of systems, structures, and components (SSCs) becomes more important to keep nuclear power plants economically viable throughout their remaining licensed operating terms, whether 40 or 60 years. This report provides Wolf Creek Nuclear Operating Corp. with an optimized LCM plan for the main generators and exciters at Wolf Creek Power Plant.

2003-09-30T23:59:59.000Z

492

Life Cycle Management Plan for Main Generator and Exciter at Callaway Nuclear Plant: Generic Version  

Science Conference Proceedings (OSTI)

As the electric power industry becomes more competitive, life cycle management (LCM) of systems, structures, and components (SSCs) becomes more important to keep nuclear power plants economically viable throughout their remaining licensed operating terms, whether 40 or 60 years. This report provides Ameren UE with an optimized LCM plan for the main generator and exciter at Callaway Plant.

2003-09-30T23:59:59.000Z

493

Nuclear quadrupole resonance of an electronically excited state from high-resolution hole-burning spectroscopy  

E-Print Network (OSTI)

Nuclear quadrupole resonance of an electronically excited state from high-resolution hole-burning 2003; published 5 May 2003 Hole-burning spectroscopy can eliminate inhomogeneous broadening and thereby, the homogeneous linewidth is often small compared to the splittings due to nuclear-spin interactions. Hole-burning

Suter, Dieter

494

PHOTOEMISSION AS A PROBE OF THE COLLECTIVE EXCITATIONS IN CONDENSED MATTER SYSTEMS.  

SciTech Connect

New developments in instrumentation have recently allowed photoemission measurements to be performed with very high energy and momentum resolution.[1] This has allowed detailed studies of the self-energy corrections to the lifetime and mass renormalization of excitations in the vicinity of the Fermi level. These developments come at an opportune time. Indeed the discovery of high temperature superconductivity in the cuprates and related systems is presenting a range of challenges for condensed matter physics.[2] Does the mechanism of high T{sub c} superconductivity represent new physics? Do we need to go beyond Landau's concept of the Fermi liquid?[3] What, if any, is the evidence for the presence or absence of quasiparticles in the excitation spectra of these complex oxides? The energy resolution of the new instruments is comparable to or better than the energy or temperature scale of superconductivity and the energy of many collective excitations. As such, photoemission has again become recognized as an important probe of condensed matter. Studies of the high T{sub c} superconductors and related materials are aided by the observation that they are two dimensional. To understand this, we note that the photoemission process results in both an excited photoelectron and a photohole in the final state. Thus the experimentally measured photoemission peak is broadened to a width reflecting contributions from both the finite lifetime of the photohole and the momentum broadening of the outgoing photoelectron.

JOHNSON, P.D.; VALLA, T.

2006-08-01T23:59:59.000Z

495

Wave Trains Excited by Cross-Equatorial Passage of the Monsoon Annual Cycle  

Science Conference Proceedings (OSTI)

In this paper the authors illustrate wave trains that are excited during the equatorial passage of the annual cycle of monsoonal convection. Twice a year, during roughly the months of DecemberJanuary and MarchApril, the annual cycle of ...

T. N. Krishnamurti; C. P. Wagner; Tina J. Cartwright; Darlene Oosterhof

1997-10-01T23:59:59.000Z

496

Life Cycle Management Plan for Main Generator and Exciter at South Texas Project: Generic Version  

Science Conference Proceedings (OSTI)

As the electric power industry becomes more competitive, life cycle management (LCM) of systems, structures, and components (SSCs) becomes more important to keep nuclear power plants economically viable throughout their remaining licensed operating terms, whether 40 or 60 years. This report provides an optimized LCM plan for the main generators and exciters at the South Texas Project Power Plant.

2003-09-30T23:59:59.000Z

497

Base excitation testing system using spring elements to pivotally mount wind turbine blades  

DOE Patents (OSTI)

A system (1100) for fatigue testing wind turbine blades (1102) through forced or resonant excitation of the base (1104) of a blade (1102). The system (1100) includes a test stand (1112) and a restoring spring assembly (1120) mounted on the test stand (1112). The restoring spring assembly (1120) includes a primary spring element (1124) that extends outward from the test stand (1112) to a blade mounting plate (1130) configured to receive a base (1104) of blade (1102). During fatigue testing, a supported base (1104) of a blad (1102) may be pivotally mounted to the test stand (1112) via the restoring spring assembly (1120). The system (1100) may include an excitation input assembly (1140) that is interconnected with the blade mouting plate (1130) to selectively apply flapwise, edgewise, and/or pitch excitation forces. The restoring spring assemply (1120) may include at least one tuning spring member (1127) positioned adjacent to the primary spring element (1124) used to tune the spring constant or stiffness of the primary spring element (1124) in one of the excitation directions.

Cotrell, Jason; Hughes, Scott; Butterfield, Sandy; Lambert, Scott

2013-12-10T23:59:59.000Z

498

Improved fluorescence-enhanced optical imaging and tomography by enhanced excitation light rejection  

E-Print Network (OSTI)

Fluorescence enhanced optical imaging and tomography studies involve the detection of weak fluorescent signals emanating from nano- to picomolar concentrations of exogenous or endogenously produced fluorophore concurrent with the rejection of an overwhelmingly large component of backscattered excitation light. The elimination of the back-reflected excitation light of the collected signal remains a major and often unrecognized challenge for further reducing the noise floor and increasing sensitivity of small animal fluorescence imaging. In this dissertation, we adapted collimating and gradient index (GRIN) lenses in an existing frequency-domain system to improve excitation light rejection and enhance planar and tomographic imaging. To achieve this goal, we developed planar and tomographic imaging systems based upon ray tracing calculations for improved rejection of excitation light. The out-of-band (S (?x)) to in-band (S (?m) - S (?x)) signal ratio assessing excitation leakage was acquired with and without collimating optics. The addition of collimating optics resulted in a 51 to 75% reduction in the transmission ratio of (S (?x))/ (S (?m) - S (?x)) for the phantom studies and an increase of target to background ratio (TBR) from 11% to 31% in animal studies. Additionally, we presented results demonstrating the improvement of model match between experiments and forward simulation models by adaptation of GRIN lens optics to a breast phantom study. In particular, 128 GRIN lenses on the fiber bundle face were employed to align the collected excitation and emission light normal to the filter surface in an existing frequency-domain system. As a result of GRIN lens collimation, we reduced the transmission ratio between 10 and 86 % and improved the model match for tomographic reconstruction of one (1 cm3) and two (0.1 cm3) targets in a 1087 cm3 of breast phantom. Ultimately, this work improves the sensitivity of NIR fluorescence imaging by enhancing the rejection of excitation light and shows that the current sensitivity challenges for translating fluorescence-enhanced optical imaging into the clinic can be overcome.

Hwang, Kil Dong

2006-12-01T23:59:59.000Z

499

Method And System For Examining Biological Materials Using Low Power Cw Excitation Raman Spectroscopy.  

DOE Patents (OSTI)

A method and system for examining biological materials using low-power cw excitation Raman spectroscopy. In accordance with the teachings of the invention, a low-power continuous wave (cw) pump laser beam and a low-power cw Stokes (or anti-Stokes) probe laser beam simultaneously illuminate a biological material and traverse the biological material in collinearity. The pump beam, whose frequency is varied, is used to induce Raman emission from the biological material. The intensity of the probe beam, whose frequency is kept constant, is monitored as it leaves the biological material. When the difference between the pump and probe excitation frequencies is equal to a Raman vibrational mode frequency of the biological material, the weak probe signal becomes amplified by one or more orders of magnitude (typically up to about 10.sup.4 -10.sup.6) due to the Raman emission from the pump beam. In this manner, by monitoring the intensity of the probe beam emitted from the biological material as the pump beam is varied in frequency, one can obtain an excitation Raman spectrum for the biological material tested. The present invention may be applied to in the in vivo and/or in vitro diagnosis of diabetes, heart disease, hepatitis, cancers and other diseases by measuring the characteristic excitation Raman lines of blood glucose, cholesterol, serum glutamic oxalacetic transaminase (SGOT)/serum glutamic pyruvic tansaminase (SGPT), tissues and other corresponding Raman-active body constituents, respectively. For example, it may also be used to diagnose diseases associated with the concentration of Raman-active constituents in urine, lymph and saliva It may be used to identify cancer in the breast, cervix, uterus, ovaries and the like by measuring the fingerprint excitation Raman spectra of these tissues. It may also be used to reveal the growing of tumors or cancers by measuring the levels of nitric oxide in tissue.

Alfano, Robert R. (Bronx, NY); Wang, Wubao (Flushing, NY)

2000-11-21T23:59:59.000Z

500

System and method for characterizing voiced excitations of speech and acoustic signals, removing acoustic noise from speech, and synthesizing speech  

DOE Patents (OSTI)

Low power EM waves are used to detect motions of vocal tract tissues of the human speech system before, during, and after voiced speech. A voiced excitation function is derived. The excitation function provides speech production information to enhance speech characterization and to enable noise removal from human speech.

Burnett, Greg C. (Livermore, CA); Holzrichter, John F. (Berkeley, CA); Ng, Lawrence C. (Danville, CA)

2002-01-01T23:59:59.000Z