Powder crystallography with a microfocus X-ray source
نویسندگان
چکیده
منابع مشابه
Dynamic Powder Crystallography with Synchrotron X-ray Sources*
The increased brightness, tunability, low divergence and low emittance of X-ray beams available at synchrotron X-ray sources facilitate a variety of powder-diffraction experiments not practical using conventional in-house sources. Furthermore, the increased availability of fast position-sensitive detectors, along with implementation of improved software, make possible new classes of experiments...
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We present a comparison for high-resolution imaging with a laboratory source between grating-based (GBI) and propagation-based (PBI) x-ray phase-contrast imaging. The comparison is done through simulations and experiments using a liquid-metal-jet x-ray microfocus source. Radiation doses required for detection in projection images are simulated as a function of the diameter of a cylindrical samp...
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An in-line method of phase contrast imaging is investigated using a polychromatic laboratorybased microfocus X-ray source. The effect of source size is considered, and by introducing water into the imaging path the influence of water on the phase contrast is determined. The results confirm that good phase contrast images can be achieved using a polychromatic laboratory-based X-ray source, and d...
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A high-flux insertion device and beamline for macromolecular crystallography has been built at the National Synchrotron Light Source (NSLS) that employs a mini-gap undulator source developed by the NSLS. The mini-gap undulator at beamline X29 is a hybrid-magnet device of period 12.5 mm operating at proven gaps of 3.3-10 mm. The beamline provides hard X-rays for macromolecular crystallography ex...
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Phase-contrast methods increase contrast, detail, and selectivity in x-ray imaging. Present compact x-ray sources do not provide the necessary spatial coherence with sufficient power to allow the laboratory-scale high-resolution phase-contrast imaging with adequate exposure times. In this letter, the authors demonstrate phase-contrast imaging with few-micron detail employing a compact 6.5 m spo...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations of Crystallography
سال: 2002
ISSN: 0108-7673
DOI: 10.1107/s0108767302092413