Small-Angle Neutron Scattering - Kfki

Basic functions approach
ρ =
const
bi
ρ = ∑V
i
ρ ≠
const
ρ
e
2
< ρV
>
= <
2
V >
Contrast
Modified contrast
ρs
∆ ρ = ρ − ρ s
ρs
∆ % ρ = ρ − ρ
e
s
I( q) = I ( q) + ∆ ρI ( q) + ( ∆ρ) 2 I ( q)
I( q) = I % ( q) + ∆ % ρI % ( q) + ( ∆ % ρ) 2 I % ( q)
s cs c
s cs c
∆ ρ = ∞ ∆ % ρ = ∞
Mitglied in der Helmholtz-Gemeinschaft
I ( ) c
q
• Stuhrmann, H.B.(1982). Small-Angle X-ray Scattering, edited by O. Glatter & O. Kratky, pp.197-213, London: Academic Press
• Avdeev, M.V. J. Appl. Cryst. 40 (2007) 56-70
I%
( q) =< I ( q)
>
c
c