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Figure 5
Intensity distribution functions, P(I), calculated from speckle patterns measured at 30.7 m for selected q values. Panels (a), (b) and (c) correspond to P(I) for exposure times (tacq) of 0.4 ms, 0.1 ms and 0.026 ms, respectively. Solid lines represent fit curves to equation (4)[link]. Insets display the scaled P(I) as a function of I/〈I〉. The dashed lines in the inset in (a) show a better agreement with equation (4)[link] by a higher weighting of the tail region and the resulting β values are larger (∼0.33–0.36). The inset in (c) depicts the scaled form of whole set of data from different acquisitions.

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