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Figure 6
(a) Normalized r.m.s. changes in intensity Δij of the 54 unique [110] LACBED patterns for the 19 allowed atom displacements within the constraints of A21am (note Ca1 z and O1 z are fixed at zero). The change in intensity is given in units of standard deviation of the image per nanometre movement. (b) The correlation between the average of all LACBED intensity changes [\bar{\Delta}_{i}] and the average change in structure-factor phase [\bar{\delta\theta_{i}}] for the 19 allowed atom displacements. (c) The same correlation for the mean change in structure-factor amplitude [\bar{\delta A_{i}}].

ISSN: 2053-2733
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