Thank you for your reply!
I know the existence of this third possibility, but I read in arXiv:1612.05162v1 that “Altogether, using LUT surfaces is therefore not recommended, at least for the simulation of wrappings.”
That’s why I focused on studying the UNIFIED model.
For sure I should go through LUT surface and test it to decide if in first approximation they can be valid for my case.
However, I couldn’t find a piece of code where parameters for the different LUT surfaces are shown. I mean, I would expect a piece of code where the measured angular distributions mentioned in the Book are defined. Do you know where I can find it maybe?
Thank you very much for your support!
Laura