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Figure 5
PXRD patterns of the NIST SRM660b LaB6 line-profile standard in a 0.5 mm capillary collected with the multipurpose diffractometer at a sample-to-detector distance of 50 cm, (a) with the Ge(111) monochromator and (b) without: experimental data (black crosses), fit (red line) and difference (residual, line below). The upper insets in (a) show the monochromatic Mo Kα1 diffraction profiles and in (b) show the Mo Kα1,2 doublet of the 111 and 421 LaB6 peaks. FWHM [equation (3)[link]] and Lorentzian fraction η [equation (4)[link]] as a function of 2θ together with least-squares fits (dashed lines) are also shown in the lower inset of each panel.

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