Small-Angle Neutron Scattering - Kfki
Small-Angle Neutron Scattering - Kfki
Small-Angle Neutron Scattering - Kfki
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<strong>Small</strong>-angle neutron scattering (SANS)<br />
Non-polarized neutrons<br />
= 0<br />
k<br />
qsinφ<br />
qcosφ<br />
k r k r<br />
0<br />
θ<br />
q r<br />
r<br />
q = k r<br />
−k r<br />
0<br />
4π<br />
θ<br />
q=<br />
sin<br />
λ 2<br />
θ <<br />
10<br />
o<br />
k 0<br />
For diluted samples (ϕ m < 3 vol. %)<br />
Mitglied in der Helmholtz-Gemeinschaft<br />
H r )<br />
Differential<br />
cross section<br />
dσ<br />
d<br />
Ω Ω<br />
=<br />
dσ<br />
(q<br />
dΩ<br />
dσ<br />
( q)<br />
dΩ<br />
2<br />
≈ FN ( q)<br />
+<br />
Nuclear formfactor<br />
2<br />
3<br />
F<br />
2<br />
M<br />
( q)<br />
Magnetic formfactor
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