core-shell cylinders B

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Fit model: core-shell cylinder B (size distribution on shell thickness)



Parameters:


parameter

description

F_scal

scaling parameter (should be between 0.1 and 10 - see here)

F_cont_core

contrast core (see here)

F_cont_shell

contrast shell (see here)

F_rad_core

core radius

F_sigma

polydispersity index [0,1] on SHELL thickness

F_thick_shell

shell thickness

F_height

cylinder length

S_phi

volume fraction



Remarks:

the checkbox "capped" allows to choose between the model with and without capped corners


the model performs a single numerical integration to take into account for the size distribution;

the averaging for different orientations of the cylinders is done by averaging 150 models with continuously varying orientation between 0 and 90 deg


a Gaussian size distribution is used by default



References:

Pedersen J.S., Adv. Colloid Interface Sci. 70, 171 (1997)