Abstract
In this work, a study of the mirror symmetries appearing in multiple
diffraction patterns of face-centred cubic crystals is carried out.
Several different X-ray and neutron multiple diffraction patterns have
been simulated for different face-centred cubic structures. The patterns
were plotted in circular plots which showed that two types of symmetry
mirrors coexist in the patterns: isomorphic and anamorphic mirrors. The
number and types of mirrors depend on the n-fold symmetry of the
scattering vector associated with the primary reflection. For n even,
only n isomorphic mirrors appear in the patterns. For n odd, n
isomorphic mirrors are formed intercalated between n anamorphic mirrors.
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