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A Guide to Reflectometry

The Fourier transform

An introduction to Fourier transforms
Fourier transforms for reflectometry analysis

Model-dependent analysis

What is model-dependent analysis?

Reflectometry slab models

The “slab model”
Optical parameters for neutrons and x-rays
How we calculate the reflectivity of a slab model
Roughness and microslicing

Model reparameterisation

A case for model reparameterisation
NiTi multilayer example
Phospholipid monolayer example

Fitting processes and problems

What is the likelihood?
How do we maximise the likelihood?
How to leverage our prior knowledge?

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By Andrew R. McCluskey

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