Small-Angle Neutron Scattering - Kfki

Contrast variation on MF: principle stages
Dissolution of initial concentrated system
(ϕ m 1-10%) with mixtures of H- and D- carriers;
measurements of scattering curves.
Determination of
effective match point
from minimum of dependence I(0) ~ ρ s
Minimization of
χ
2
Experimental separation
on basic functions
1 [ I ( q) I ( q) I ( q) ( ) I ( q)]
= ∑ % % % % %
N − 3 ( )
k
2 2
k
−
s
− ∆ρk cs
− ∆ρk c
2
σ
k
q
I k
(q), σ k
(q) are experimental data for k-th contrast;
N is number of contrasts.
SLD map for MF components
Mitglied in der Helmholtz-Gemeinschaft
Separation to modified basic functions
Comparison of I s with scattering
in effective match point
(check-out separation)
Analysis of I c .
Comparison of I c (total shape)
with scattering in H-carrier
(only «sphere» of magnetic material)
7.0×10 10 cm -2
2.0×10 10 cm -2 D-solvent
1.0×10 10 cm -2
0.0×10 10 cm -2
magnetic SLD
Н-solvent
magnetic
materials
surfactants