| Issue |
Europhys. Lett.
Volume 50, Number 5, June I 2000
|
|
|---|---|---|
| Page(s) | 601 - 607 | |
| Section | Condensed matter: structure, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2000-00312-y | |
| Published online | 01 September 2002 | |
Generalization of Porod's law of small-angle scattering to anisotropic samples
1
Dipartimento di Fisica “G. Galilei" and INFM, sezione di Padova
via Marzolo 8, I-35131 Padova, Italy
2
ETH Zürich, Institut für Angewandte Physik - CH-8093 Zürich, Switzerland
Received:
19
October
1999
Accepted:
29
March
2000
Small-angle scattering from anisotropic samples, consisting of
homogeneous particles
inside a homogeneous medium with a scattering contrast
, is considered. Along any direction
of reciprocal space, at large 
the Porod plot of the scattering intensity (i.e.
vs.
q) shows a plateau whose height depends on 
and reads 
. Here, the sum runs over all the
points (labeled by (j,l)) of the surface of the j-th particle of the
sample where the normal is either parallel or antiparallel to , and
is the corresponding Gaussian
curvature value.
PACS: 61.10.Dp – Theories of diffraction and scattering / 61.10.Eq – X-ray scattering (including small-angle scattering) / 61.12.Bt – Theories of diffraction and scattering
© EDP Sciences, 2000
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