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1

Digitale Medien

Erratum: A femtojoule calorimeter using micromechanical sensors [Rev. Sci. Instrum. 65, 3793 (1994)] (1995)

Barnes, J. R. ; Stephenson, R. J. ; Woodburn, C. N. ; [weitere]

[S.l.] : American Institute of Physics (AIP)

Review of Scientific Instruments 66 (1995), S. 3083-3083

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ISSN: 1089-7623

Quelle: AIP Digital Archive

Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.1146429

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2

Digitale Medien

Asymmetrically cut crystals as optical elements for highly collimated x-ray beams : Proceedings of the 5th international conference on synchrotron radiation instrumentation (1995)

Brauer, S. ; Stephenson, G. B. ; Sutton, M. ; [weitere]

[S.l.] : American Institute of Physics (AIP)

Review of Scientific Instruments 66 (1995), S. 1506-1509

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ISSN: 1089-7623

Quelle: AIP Digital Archive

Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik

Notizen: Asymmetrically cut perfect crystals, in both the Laue and Bragg geometries, are examined as single crystal monochromators for x-ray beams that are collimated to a small fraction of the Darwin width, as is typical in experiments with coherent x rays. Both the Laue and asymmetric Bragg geometries are plagued by an inherent chromatic aberration that increases the beam divergence much beyond that of the symmetric Bragg geometry. Measurements from a recent experiment at the ESRF are presented to compare Si(220) (symmetric Bragg), diamond(111) (asymmetric Laue), and diamond(111) (symmetric Bragg inclined) geometries. © 1995 American Institute of Physics.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.1145892

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3

Digitale Medien

Scanning tunneling microscope investigation of the growth morphology of titanium silicide on Si(111) substrates (1995)

Stephenson, A. W. ; Welland, M. E.

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 78 (1995), S. 5143-5154

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ISSN: 1089-7550

Quelle: AIP Digital Archive

Thema: Physik

Notizen: A scanning tunneling microscope in ultrahigh vacuum has been used to investigate the growth, morphology, and surface atomic structure of ultrathin titanium silicide films on Si(111) substrates. Microstructural considerations have been used to identify various stages of the silicide growth. Atomic resolution images of a titanium silicide crystallite facet, formed at 850 °C, have been identified as a 2×2 silicon termination of a C54-TiSi2(010) surface. Possible epitaxial silicide/silicon relationships are provided. Theoretical consideration has been given to the interatomic bonding in the C54-TiSi2 lattice and the dangling bond density of ideally terminated silicide planes has been calculated. The highly reconstructed atomically flat surface of a large crystallite, formed at 1200 °C, has been assigned as a C54-TiSi2(311) plane giving the epitaxial relation C54-TiSi2(311)(parallel)Si(111). The presence of pairs and linear chains of defects, with common orientations, is attributed to the decomposition of a diatomic gas on the facet, producing sites of preferential adsorption on the silicide surface. © 1995 American Institute of Physics.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.359747

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4

Digitale Medien

Scanning tunneling microscope crystallography of titanium silicide on Si(100) substrates (1995)

Stephenson, A. W. ; Welland, M. E.

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 77 (1995), S. 563-571

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ISSN: 1089-7550

Quelle: AIP Digital Archive

Thema: Physik

Notizen: A scanning tunneling microscope (STM) in ultrahigh vacuum has been used to investigate the growth, morphology, and surface atomic structure of ultrathin titanium silicide films on Si(100) substrates. Microstructural considerations have been used to identify various stages of the silicide growth. Methods for STM crystallography have been developed and used to identify possible epitaxial silicide/silicon relationships based on morphological considerations. Atomic resolution images of a titanium silicide crystallite have identified a 2×2 silicon termination of a C54-TiSi2(111) surface. It is shown that unambiguous identification of epitaxial relationships requires images of the atomic structure of the silicide crystallite surfaces in addition to morphological information. © 1995 American Institute of Physics.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.359040

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5

Digitale Medien

In situ x-ray diffraction analysis of the C49–C54 titanium silicide phase transformation in narrow lines (1995)

Roy, R. A. ; Clevenger, L. A. ; Cabral, C. ; [weitere]

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 66 (1995), S. 1732-1734

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ISSN: 1077-3118

Quelle: AIP Digital Archive

Thema: Physik

Notizen: The transformation of titanium silicide from the C49 to the C54 structure was studied using x-ray diffraction of samples containing arrays of narrow lines of preformed C49 TiSi2. Using a synchrotron x-ray source, diffraction patterns were collected at 1.5–2 °C intervals during sample heating at rates of 3 or 20 °C/s to temperatures of 1000–1100 °C. The results show a monotonic increase in the C54 transition temperature by as much as 180 °C with a decreasing linewidth from 1.0 to 0.1 μm. Also observed is a monotonic increase in (040) preferred orientation of the C54 phase with decreasing linewidth. The results demonstrate the power of in situ x-ray diffraction of narrow line arrays as a tool to study finite size effects in thin-film reactions. © 1995 American Institute of Physics.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.113349

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6

Digitale Medien

Erratum: Lifetime of the CH3OH* intermediate in the reaction CH4+O(1D2)→CH3OH*→CH3+OH [J. Chem. Phys. 102, 6946 (1995)] (1995)

van Zee, Roger D. ; Stephenson, John C.

College Park, Md. : American Institute of Physics (AIP)

The Journal of Chemical Physics 103 (1995), S. 3272-3272

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ISSN: 1089-7690

Quelle: AIP Digital Archive

Thema: Physik , Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.470261

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7

Digitale Medien

Lifetime of the CH3OH* intermediate in the reaction CH4+O(1D2)→CH3OH*→CH3+OH (1995)

van Zee, Roger D. ; Stephenson, John C.

College Park, Md. : American Institute of Physics (AIP)

The Journal of Chemical Physics 102 (1995), S. 6946-6948

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ISSN: 1089-7690

Quelle: AIP Digital Archive

Thema: Physik , Chemie und Pharmazie

Notizen: Subpicosecond lasers measured the appearance rate of OH X(v=0) following 267 nm photolysis of the CH4⋅O3 van der Waals complex. The rise of the OH A←OH X laser-induced fluorescence with respect to the photolysis/probe delay time, tD, was LIF(tD)=1−exp(−tD/τ) with τ approximately 3 ps, indicating that the reaction CH4+O(1D2)→CH3+OH involves a CH3OH* intermediate with that lifetime. No prompt OH(v=0) from a direct or fast reaction was observed. © 1995 American Institute of Physics.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.469132

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8

Digitale Medien

Maximal Feebly Compact Expansions (1995)

PORTER, JACK R. ; STEPHENSON, ROBERT M. ; WOODS, R. GRANT

Oxford, UK : Blackwell Publishing Ltd

Annals of the New York Academy of Sciences 767 (1995), S. 0

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ISSN: 1749-6632

Quelle: Blackwell Publishing Journal Backfiles 1879-2005

Thema: Allgemeine Naturwissenschaft

Notizen: : Conditions under which a given topological space does, or does not, possess a stronger maximal feebly compact topology are given. Procedures are developed which can be used, for certain feebly compact spaces, to obtain stronger maximal feebly compact spaces. Several examples are constructed.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1111/j.1749-6632.1995.tb55905.x

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9

Digitale Medien

An Adaptive Finite-Element Model for Calculating Subsurface Transport of Contaminant (1995)

Pepper, D. W. ; Stephenson, D. E.

Oxford, UK : Blackwell Publishing Ltd

Ground water 33 (1995), S. 0

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ISSN: 1745-6584

Quelle: Blackwell Publishing Journal Backfiles 1879-2005

Thema: Energietechnik , Geologie und Paläontologie

Notizen: A finite-element method which incorporates mesh adaptation is used to calculate ground-water flow and pollutant transport. The formulation is based on the equations for conservation of mass, Darcy's law for an anisotropic medium, and the time-dependent species transport equation. Modifications have been implemented to the finite-element formulation to enhance computational speed and reduce storage; Petrov-Galerkin weighting of the advection terms provides numerical stability. An explicit time marching scheme is used to solve the transient equations. By utilizing unstructured adaptive meshing, species concentration and location of steep fronts are accurately resolved, even though one begins with a coarse mesh. The algorithm currently runs on PC and workstation class computers.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1111/j.1745-6584.1995.tb00305.x

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10

Digitale Medien

Linkage of the gene for cystinosis to markers on the short arm of chromosome 17 (1995)

McDowell, Geraldine A. ; Gahl, William A. ; Stephenson, Leah A. ; [weitere]

[s.l.] : Nature Publishing Group

Nature genetics 10 (1995), S. 246-248

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ISSN: 1546-1718

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Medizin

Notizen: [Auszug] The Cystinosis Collaborative Research Group* We conducted a genome wide linkage study using 23 cystinosis families of Northern European, Pakistani and Indian origin (pedigrees available upon request). Of 126 participants, 43 were affected (29 males and 14 females). In three families, the ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/ng0695-246

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