منابع مشابه
Hard-X-ray Zone Plates: Recent Progress
The technology to focus hard-X-rays (photon energy larger than 1–2 keV) has made great progress in the past three years. The progress was particularly spectacular for lenses based on the Fresnel zone plate concept. The spatial resolution notably increased by a factor of three, opening up entirely new domains of application, specifically in biomedical research. As we shall see, this evolution is...
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Grating-based x-ray imaging provides three principle kinds of contrast: absorption, phase, and dark-field. Due to the availability of tomographic reconstruction algorithms for the dark-field contrast, it is now possible to take advantage of quantitative scatter information. However, the published algorithm is based on several assumptions that might be violated in reality. We use numerical simul...
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Recent advances in research on soft X-ray lasers at Princeton are described. A one-dimensional code has been constructed which is in good agreement with the measured radial dependence of soft X-ray gain at 182 A in a magnetically confined recombining plasma. Multichannel detectors have been installed in the diagnostic spectrometers and spectra of the line emission in axial and transverse direct...
متن کاملRecent Progress in X-ray Emittance Diagnostics at Spring-8
At the SPring-8 storage ring, we have recently developed two X-ray instruments for emittance diagnostics. The one for a bending magnet source is the X-ray pinhole camera which directly images the beam profile. A pinhole in the atmosphere is composed of combined narrow X-Y slits made of tungsten. A scintillator crystal is used to convert the X-ray beam image to a visible image. The spatial resol...
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ژورنال
عنوان ژورنال: Journal of Japan Institute of Light Metals
سال: 2014
ISSN: 0451-5994,1880-8018
DOI: 10.2464/jilm.64.510