Premium
Interprétation de la diffusion centrale des rayons X par les systèmes poreux. II. Exemples d'application
Author(s) -
Tchoubar D.,
Méring J.
Publication year - 1969
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889869006716
Subject(s) - scattering , suspension (topology) , particle (ecology) , diffusion , materials science , small angle scattering , crystallography , chemistry , physics , mineralogy , optics , thermodynamics , mathematics , oceanography , homotopy , pure mathematics , geology
The method proposed in part I for the interpretation of small angle scattering data is applied to various concentrated systems. For a dilute system, small angle scattering provides the ϕ( l ) distribution of chords directly in the scattering units. Two examples of dilute particle suspensions are studied: firstly rounded particles of polytetrafluoroethylene and secondly cubic microcrystals of MgO. Thus we have obtained the ϕ( l ) distributions characteristic of particles with or without sharp edges. For concentrated systems, when the ϕ( l ) distribution of particle chords is known, small angle scattering provides the f ( m ) distribution of interparticle spacings. The result, applied to a porous aggregate of the rounded particles, already studied in a dilute state, and to a concentrated suspension of the same particles, gives two f ( m ) distributions distinctly characteristic of each state.