Size-distribution model: local monodisperse approximation
Scattering from cylinders of two different sizes using the Local Monodisperse Approximation (LMA).
The sample is made of cylinders deposited on a substrate.
The cylinders are of two different sizes:
80% of Type $1$: radius $R_1 = 5$ nm, height $H_1 = 5$ nm. The interference function is a radial paracrystal with a peak distance equal to $16.8$ nm and a damping length of $1$ $\mu$m.
20% of Type $2$: radius $R_2 = 8$ nm, height $H_2 = 8$ nm. The interference function is also a radial paracrystal but with a peak distance of $22.8$ nm and a damping length equal to $1$ $\mu$m.
Each type of cylinders is associated with a “particle layout”.
The LMA is used since the sample is made of two domains containing particles of the same size and shape.
The wavelength is equal to 0.1 nm.
The incident angles are $\alpha_i = 0.2 ^{\circ}$ and $\varphi_i = 0^{\circ}$.