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Figure 8
GIXD spectra measured on a Langmuir monolayer of behenic acid compressed at 20 mN m−1 (a) with the classical setup of a 2D detector with a Soller collimator, (b) with the single vertical slit and 2D detector configuration (sample-to-detector distance: 770 mm; sample-to-slit distance: 240 mm; slit horizontal gap: 1 mm). Red lines are fits of the experimental data points by two Lorentz functions in (a) and Gaussian functions in (b), as discussed in the text, and both with a linear sloping background. The two images do not have the same colour scale due to different binnings in the number of points.

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SYNCHROTRON
RADIATION
ISSN: 1600-5775
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