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Figure 1
Sections of reciprocal space with main and satellite reflections. The hklm indices correspond to the orthorhombic unit-cell parameters a = 7.95, b = 18.10, c = 5.70 Å and the modulation wavevector q = 0.6038c* (yellow arrows in insets). In (a) and (b), the intersections of white lines in the bottom right-hand quarters define strong main hkl0 reflections; strong satellites of the first order, 1kl1, and weak satellites of the second order, h0l2, are away from the intersections. In (c) and (d), the hk01 and hk02 satellites are shown separately. Weak satellites of the second order, hk02, can be observed only in the areas with low background.

IUCrJ
Volume 5| Part 4| July 2018| Pages 470-477
ISSN: 2052-2525
https://doi.org/10.1107/S2052252518007303