The displacement correlation tensor: Microstructure, ensemble anisotropy and curving fibers

 RHtriangle Cumulant expansion of double wave vector diffusion signal.  RHtriangle Exact expression of displacement correlation tensor (Q) in model geometries.  RHtriangle Q sensitive to surface to volume ratio.  RHtriangle Q reflects scatter matrices of orientation distributions of arbitrary pores.  RHtriangle Q captures curvature and deflection angles of curving fibers.