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Publication Citation: Efficiency calibrations of cylindrically bent transmission crystals in the 20 keV to 80 keV x-ray range

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Author(s): Lawrence T. Hudson; C M. O'Brien; Uri Feldman; Stephen M. Seltzer; Hye-Sook Park; John F. Seely;
Title: Efficiency calibrations of cylindrically bent transmission crystals in the 20 keV to 80 keV x-ray range
Published: April 15, 2011
Abstract: Two quartz (10-11) crystals were cylindrically bent to 25.4 cm radius of curvature and were mounted in identical Cauchois type transmission spectrometers, and the crystal diffraction efficiencies were measured to 5 % absolute accuracy using narrow bandwidth x-ray source fluences in the 20 keV to 80 keV energy range. The measured integrated reflectivity values were compared to calculations performed using a computational model that accounts for the diffraction geometry of the bent transmission crystal. These crystal calibrations enable the accurate measurement of absolute hard x-ray emission levels from laser-produced plasmas and other laboratory sources.
Citation: Optics Letters
Volume: 36
Pages: pp. 1835 - 1837
Keywords: diffraction; x-ray spectroscopy; x-ray
Research Areas: Radiation Physics, Calibrations (Ionizing Radiation)
PDF version: PDF Document Click here to retrieve PDF version of paper (316KB)