P. Davidson, M. Clerc, S. S. Ghosh, N. C. Maliszewskyj, P. A. Heiney, J. Hynes, Jr., and A. B. Smith, III, J. Phys. France II 5, 249-262 (1995).
We present the first quantitative measurements of diffuse scattering in the vicinity of the Bragg {100} peaks of a hexagonal discotic liquid crystal. The scattering takes the form of a toroid lying in the HK0 plane. The cross-section of the diffuse scattering in the H0L plane is an ellipse elongated along the L direction, in reasonable agreement with calculations for the thermal diffuse scattering. The cross section in the HK0 plane has an unexpectedly smooth six-fold sinusoidal modulation.
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