We investigate whether low-rank coals can be seen as a polydisperse distribution of particles having an internal structure. More definitely, we have analyzed the case where particles are cubic stackings of paraellelepipedic lauers of uniform electronic density. Each layer is a 1. 50 Angstrom thick and the interlayer spacing is 3. 35 Angstrom. The particle distributions are determined by best-fitting the experimental intensities. One finds that the model reproduces the fractal behavior of the latter, provided the momentum transfer range is less than two decades wide.
POLYDISPERSE DISTRIBUTIONS OF COMPOSITE PARTICLES AND THE SAXS BEHAVIOUR OF LOW-RANK COALS.
BENEDETTI, Alvise;POLIZZI, Stefano
1987-01-01
Abstract
We investigate whether low-rank coals can be seen as a polydisperse distribution of particles having an internal structure. More definitely, we have analyzed the case where particles are cubic stackings of paraellelepipedic lauers of uniform electronic density. Each layer is a 1. 50 Angstrom thick and the interlayer spacing is 3. 35 Angstrom. The particle distributions are determined by best-fitting the experimental intensities. One finds that the model reproduces the fractal behavior of the latter, provided the momentum transfer range is less than two decades wide.
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