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. 2001 Dec 1;106(6):921–952. doi: 10.6028/jres.106.046

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The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.

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Fig. 3 — Plot of the full width at half maximum (FWHM) vs 2θ for three configurations of the in-pile, monochromatic beam and diffracted beam collimators and for the 220 reflection of a copper monochromator of mosaic spread β_m = 15′ and take-off angle 2θ_m= 75°. The minima of the three resolution functions range from 40° to 60°. The lumininosity of the diffractometer for the 10-10-10 and 6-10-6 configurations is 56 % and 21 % that of the 10-20-10 configuration, respectively.