Interpretation of small-angle scattering data of inhomogeneous ellipsoids

被引:42
作者
Fritz, G [1 ]
Bergmann, A [1 ]
机构
[1] Graz Univ, Inst Chem, A-8010 Graz, Austria
关键词
D O I
10.1107/S0021889804017959
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Small-angle scattering data of inhomogeneous ellipsoidal particles are discussed in terms of their pair distance distribution functions p(r). Special attention is given to the determination of core and shell thicknesses and axis ratios as well as to large distances within the particles, since cross terms between parts of positive and negative contrast within the particle can produce misleading results, similar to homogeneous particles or Janus particles. Cross-section pair distance distribution functions pc( r) of cylinders with elliptical cross sections show similar behaviour. Theoretical calculations are compared with small-angle X-ray and neutron scattering (SAXS and SANS) data of cetyltrimethylammonium bromide in aqueous KCl solutions.
引用
收藏
页码:815 / 822
页数:8
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