Results 221 to 230 of about 38,586 (263)
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Review of Scientific Instruments, 1989
The performance of a system for quantitave microtomography with synchrotron radiation is described with regard to the spatial resolving power. The experimental setup consists of a double-crystal monochromator, a monitor in front of a sample stage and a line scan detector which is built up of two photodiode arrays (Reticon RL1024SF), which are cooled by
K. Engelke +3 more
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The performance of a system for quantitave microtomography with synchrotron radiation is described with regard to the spatial resolving power. The experimental setup consists of a double-crystal monochromator, a monitor in front of a sample stage and a line scan detector which is built up of two photodiode arrays (Reticon RL1024SF), which are cooled by
K. Engelke +3 more
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Journal of Microscopy, 1987
SUMMARYThe possibility of reconstructing the interior arrangement of a specimen non‐destructively is determined by the degree of absorption of X‐ray radiation in the object. Microtomography systems based on X‐ray TV microscopes enable objects with a high absorption (including metals), and up to several millimetres in size, to be investigated with a ...
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SUMMARYThe possibility of reconstructing the interior arrangement of a specimen non‐destructively is determined by the degree of absorption of X‐ray radiation in the object. Microtomography systems based on X‐ray TV microscopes enable objects with a high absorption (including metals), and up to several millimetres in size, to be investigated with a ...
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Materials Characterization, 2010
In this tutorial, we describe X-ray microtomography as a technique to nondestructively characterize material microstructure in three dimensions at a micron level spatial resolution. While commercially available laboratory scale instrumentation is available, we focus our attention on synchrotron-based systems, where we can exploit a high flux ...
Eric N. Landis, Denis T. Keane
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In this tutorial, we describe X-ray microtomography as a technique to nondestructively characterize material microstructure in three dimensions at a micron level spatial resolution. While commercially available laboratory scale instrumentation is available, we focus our attention on synchrotron-based systems, where we can exploit a high flux ...
Eric N. Landis, Denis T. Keane
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Microtomography at GeoSoilEnviroCARS
SPIE Proceedings, 2004A facility for x-ray computed microtomography (CMT) is operating as a national user facility for earth and environmental sciences research on the bending magnet beamline at the GeoSoilEnviroCARS sector at the Advanced Photon Source (APS). The APS bending magnet has a critical energy of 20 keV, and thus provides high flux at photon energies up to 100 ...
Mark L. Rivers +2 more
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Proceedings, annual meeting, Electron Microscopy Society of America, 1988
We have developed a new X-ray microscope which produces complete three dimensional images of samples. The microscope operates by performing X-ray tomography with unprecedented resolution. Tomography is a non-invasive imaging technique that creates maps of the internal structure of samples from measurement of the attenuation of penetrating radiation. As
H.W. Deckman +3 more
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We have developed a new X-ray microscope which produces complete three dimensional images of samples. The microscope operates by performing X-ray tomography with unprecedented resolution. Tomography is a non-invasive imaging technique that creates maps of the internal structure of samples from measurement of the attenuation of penetrating radiation. As
H.W. Deckman +3 more
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Three-Dimensional X-Ray Microtomography
Science, 1987The new technique of x-ray microtomography nondestructively generates three-dimensional maps of the x-ray attenuation coefficient inside small samples with approximately 1 percent accuracy and with resolution approaching 1 micrometer. Spatially resolved elemental maps can be produced with synchrotron x-ray sources by scanning samples at energies just ...
B P, Flannery +3 more
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Microfocus radiography producing microtomography
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1994Abstract A microtomographic system has been made using a real time microfocus radiographic system and a image digitalizer schedule. The aim of this system was reaching an acceptable data acquisition time, which was hardly reduced compared to traditional microtomographic systems that employ conventional X-ray sources and detectors.
J.T. De Assis +2 more
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X-ray diffraction microtomography
Measurement Science and Technology, 1993A table-top system has been developed for tomographic imaging of the internal structure of objects of low mass density at sub-millimetre resolution. Images are based on the X-ray diffraction properties of constituent materials, and are reconstructed from tomographic data using summation-filtered back-projection.
J A Grant +4 more
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Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1990
Abstract A computer program for an IBM compatible PC using the method of filtered backprojection and the hardware necessary for microtomography have been developed for the GSI heavy ion microprobe. The spatial resolution so far achieved is 3 μm with argon ions of 1.4 MeV nucleon . The special usefulness of heavy ions for microtomography and the
B.E. Fischer, C. Mühlbauer
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Abstract A computer program for an IBM compatible PC using the method of filtered backprojection and the hardware necessary for microtomography have been developed for the GSI heavy ion microprobe. The spatial resolution so far achieved is 3 μm with argon ions of 1.4 MeV nucleon . The special usefulness of heavy ions for microtomography and the
B.E. Fischer, C. Mühlbauer
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Synchrotron Microtomography of Composites
MRS Proceedings, 1988AbstractX-ray computed tomography (CT) uses absorption profiles from many different viewing directions to reconstruct the two-dimensional distribution of x-ray absorptivity within a slice of the sample. The tunability, high brightness and parallelism of synchrotron radiation are critical to high resolution (0.001mm), high contrast (1%) CT or ...
S. R. Stock +6 more
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