The Experts below are selected from a list of 294 Experts worldwide ranked by ideXlab platform
R. Della Ceca - One of the best experts on this subject based on the ideXlab platform.
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The XMM-Newton serendipitous survey. VII. The third XMM-Newton serendipitous source catalogue
Astron.Astrophys., 2016Co-Authors: S.r. Rosen, N.a. Webb, M.g. Watson, J. Ballet, D. Barret, V. Braito, F.j. Carrera, M.t. Ceballos, M. Coriat, R. Della CecaAbstract:Context. Thanks to the large collecting area (3 x~1500 cm^2 at 1.5 keV) and wide Field of view (30' across in full Field Mode) of the X-ray cameras on board the European Space Agency X-ray observatory XMM-Newton, each individual pointing can result in the detection of up to several hundred X-ray sources, most of which are newly discovered objects. Since XMM-Newton has now been in orbit for more than 15 yr, hundreds of thousands of sources have been detected.
Yuichi Ikuhara - One of the best experts on this subject based on the ideXlab platform.
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dynamics of annular bright Field imaging in scanning transmission electron microscopy
Ultramicroscopy, 2010Co-Authors: S D Findlay, Naoya Shibata, Hidetaka Sawada, Eiji Okunishi, Yukihito Kondo, Yuichi IkuharaAbstract:We explore the dynamics of image formation in the so-called annular bright Field Mode in scanning transmission electron microscopy, whereby an annular detector is used with detector collection range lying within the cone of illumination, i.e. the bright Field region. We show that this imaging Mode allows us to reliably image both light and heavy columns over a range of thickness and defocus values, and we explain the contrast mechanisms involved. The role of probe and detector aperture sizes is considered, as is the sensitivity of the method to intercolumn spacing and local disorder.
S.r. Rosen - One of the best experts on this subject based on the ideXlab platform.
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The XMM-Newton serendipitous survey. VII. The third XMM-Newton serendipitous source catalogue
Astron.Astrophys., 2016Co-Authors: S.r. Rosen, N.a. Webb, M.g. Watson, J. Ballet, D. Barret, V. Braito, F.j. Carrera, M.t. Ceballos, M. Coriat, R. Della CecaAbstract:Context. Thanks to the large collecting area (3 x~1500 cm^2 at 1.5 keV) and wide Field of view (30' across in full Field Mode) of the X-ray cameras on board the European Space Agency X-ray observatory XMM-Newton, each individual pointing can result in the detection of up to several hundred X-ray sources, most of which are newly discovered objects. Since XMM-Newton has now been in orbit for more than 15 yr, hundreds of thousands of sources have been detected.
Reaz A. Chaudhuri - One of the best experts on this subject based on the ideXlab platform.
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On three-dimensional singular stress Field at the front of a planar rigid inclusion (anticrack) in an orthorhombic mono-crystalline plate
International Journal of Fracture, 2012Co-Authors: Reaz A. ChaudhuriAbstract:A novel eigenfunction expansion technique, based in part on separation of the thickness-variable and partly on the Eshelby–Stroh type affine transformation, is developed to derive three-dimensional asymptotic stress Field in the vicinity of the front of a semi-infinite through-thickness anticrack reinforcing an infinite orthorhombic single crystal plate, of finite thickness and subjected to far-Field Mode I/II loadings. Anticrack-face boundary conditions and those that are prescribed on the top and bottom (free or fixed) surfaces of the plate are exactly satisfied. The present investigation considers six through-anticrack systems reinforcing orthorhombic single crystal plates. Explicit expressions for the singular stresses in the vicinity of the front of a through-thickness anticrack reinforcing an orthorhombic plate, subjected to far-Field Mode I/II loadings, are presented. Finally, hitherto largely unavailable results, pertaining to the through-thickness variations of stress singularity coefficients corresponding to symmetric and skew-symmetric sinusoidal loads that also satisfy the boundary conditions on the top and bottom surfaces of an orthorhombic mono-crystalline plate under investigation, bridge a longstanding gap in the stress singularity/fracture mechanics literature.
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On three-dimensional singular stress Field at the front of a planar rigid inclusion (anticrack) in an orthorhombic mono-crystalline plate
International Journal of Fracture, 2012Co-Authors: Reaz A. ChaudhuriAbstract:A novel eigenfunction expansion technique, based in part on separation of the thickness-variable and partly on the Eshelby–Stroh type affine transformation, is developed to derive three-dimensional asymptotic stress Field in the vicinity of the front of a semi-infinite through-thickness anticrack reinforcing an infinite orthorhombic single crystal plate, of finite thickness and subjected to far-Field Mode I/II loadings. Anticrack-face boundary conditions and those that are prescribed on the top and bottom (free or fixed) surfaces of the plate are exactly satisfied. The present investigation considers six through-anticrack systems reinforcing orthorhombic single crystal plates. Explicit expressions for the singular stresses in the vicinity of the front of a through-thickness anticrack reinforcing an orthorhombic plate, subjected to far-Field Mode I/II loadings, are presented. Finally, hitherto largely unavailable results, pertaining to the through-thickness variations of stress singularity coefficients corresponding to symmetric and skew-symmetric sinusoidal loads that also satisfy the boundary conditions on the top and bottom surfaces of an orthorhombic mono-crystalline plate under investigation, bridge a longstanding gap in the stress singularity/fracture mechanics literature.
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three dimensional singular stress Field at the front of a crack weakening a unidirectional fiber reinforced composite plate
Composite Structures, 2011Co-Authors: Reaz A. ChaudhuriAbstract:Abstract An eigenfunction expansion technique, based in part on separation of the thickness-variable and partly on the Eshelby–Stroh type affine transformation, is employed to derive hitherto unavailable three-dimensional asymptotic stress Field in the vicinity of the front of a semi-infinite through-thickness crack weakening an infinite transversely isotropic unidirectional fiber reinforced composite plate, of finite thickness and subjected to far-Field Mode I/II loadings. Crack-face boundary conditions and those that are prescribed on the top and bottom (free, fixed or lubricated) surfaces of the lamina are exactly satisfied. The present investigation considers mainly two through-crack systems – (i) (0 1 0)[0 0 1] with the [1 0 0] propagation direction, and (ii) ( 1 ¯ 0 0 ) [ 0 0 1 ] with the [0 1 0] propagation direction. Explicit expressions for the singular stresses in the vicinity of the front of a through-thickness crack weakening a transversely isotropic unidirectional fiber reinforced composite plate, subjected to far-Field Mode I/II loadings, are presented. Hitherto unavailable numerical results, pertaining to the through-thickness variations of stress intensity factors for saw-tooth load and its skew-symmetric counterpart that also satisfy the boundary conditions on the top and bottom surfaces of the cracked unidirectional fiber reinforced composite (transversely isotropic) plates under investigation, bridge a longstanding gap in the fracture mechanics literature.
Philip H. Bucksbaum - One of the best experts on this subject based on the ideXlab platform.
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Toward strong Field Mode-selective chemistry
Journal of Physical Chemistry A, 1999Co-Authors: Thomas Weinacht, James L. White, Philip H. BucksbaumAbstract:We demonstrate a new method for coherent control of bond excitation in the strong Field regime. We can selectively excite one or more Raman-active Modes in a molecular liquid without the need for externally generated coherent sources separated by the Stokes frequency. The method employs excitation with an intense, ultrafast, shaped pulse in a learning control loop.