Reflected neutrons
Refractive index
Angle α
Principle of monochromatic reflectometry
Critical angle
Depth
The measurement
The observation
(two interfaces)
The interpretation
100%
Layer
Grazing incidence
0%
Sample substrate
©2017-2018 ILL, France (S. Crozel and A. Filhol)
Critical
angle
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n1
Angle α
n3
n2
α1
α2
β2 = α2
β1 = α1
α3
Angle α
2nd
interface
1st
interface