Small-Angle Neutron Scattering - Kfki

For particle of two components with common center of mass:
2
2 ( ρ0
− ρs
)( V0
/ V1
) R0
+ ( ρ1
− ρs
)(1 − ( V0
/ V1
)) R
Rg
=
∆ρ
2
1
I.N.Serdyuk, B.A.Fedorov,
J. Polym. Sci. 11 (1973) 645
2 2
2 2 ( V0
/ V1
)(1 − ( V0
/ V1
))( ρ1
− ρ0)(
R1
− R0
)
Rg
= Rc
+
∆ρ
=
R
2
c
+
α
∆ρ
For iron unsaturated ferritin:
~
R
= ( R
< α >
∆
~ ρ
B
( ∆
~ ρ)
) /(1
2 2
g c
+ − +
2
D
( ∆
~ ρ)
2
)
Mitglied in der Helmholtz-Gemeinschaft
2
< α
>=
( V0 / V1
)(1 − ( V0
/ V1
))( ρ1− < ρ0
> )( R1
− R
< ρ
>=
e
( V
ρ
0
/ V1
) < ρ0
> + (1 − ( V0
/ V1
))
Analysis of B, D
1
2
0
)
< ρ
< ρ
10 -2
0 >=
5 .0×
10 cm
10 -2
0 >=
4 .9×
10 cm
additional data for σ ρ