x-ray spectrograph

x-ray spectrograph

[′eks ‚rā ′spek·trə‚graf]
(spectroscopy)
An x-ray spectrometer equipped with photographic or other recording apparatus; one application is fluorescence analysis.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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The X-ray spectrograph is "like a microscope without lenses," Buettner explains, so the image is reconstructed mathematically from the collected data, rather than physically by bending light beams using lenses.
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The instrument, which cannot image objects but instead serves as a high-resolution X-ray spectrograph, clearly detected iron in hot gas throughout the relatively nearby Perseus cluster of galaxies, reports Peter J.
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