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Small-Angle Neutron Scattering - Kfki

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Polydisperse systems<br />

Intensity at zero angle<br />

~<br />

I<br />

~<br />

I<br />

~<br />

s<br />

I cs<br />

(0)<br />

(0)<br />

(0)<br />

=<br />

=<br />

=<br />

n<br />

n < ( ρ − ρ )<br />

0<br />

<<br />

2<br />

c<br />

V c<br />

><br />

e<br />

2<br />

V<br />

2<br />

c<br />

><br />

I(0)<br />

classical<br />

monodisperse systems<br />

Mitglied in der Helmholtz-Gemeinschaft<br />

I (0)<br />

=<br />

+<br />

2<br />

n∆ρ~<br />

< V<br />

2<br />

c<br />

n < ( ρ − ρ )<br />

e<br />

> +<br />

2<br />

V<br />

2<br />

c<br />

><br />

Full matching is not possible!<br />

0<br />

effective<br />

match point<br />

∆ρ ~

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