|Message: Re: difference between polished and polishedfrontpainted||Not Logged In (login)|
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> I would like to know the difference between polished and > polishedfrontpainted.
I am afraid that 'polishedfrontpainted' set for a dielectric_dielectric surface is completely redundant with 'polished' set for dielectric_metal surface. While 'polished' for dielectric_dielectric is simply a perfectly smooth interface between two dielectric materials where you can have refraction as well as reflections. With 'polishedfrontpainted or 'groundfrontpainted' for a dielectric_dielectric it's the same as 'polished' and 'ground' for dielectric_metal surface, you only get reflections.
> In polishedbackpainted, I know that the polished > refers to the wrapping, and that the interface between the scintillator > and the 'air gap' is characterized by the sigma-alpha and the four > probability distributions (specularspike, specularlobe,etc).
You are perfectly correct. In 'backpainted' the meaning of 'polished/ground' refers to the backing/wrapping/reflector while in the other cases 'polished/ground' refers to the metal or dielectric surface itself. A 'ground' dielectric_dielectric surface is still characterized but sigma-alpha and the reflection probabilities etc.
> But what does 'polished' in polishedfrontpainted refer to? If it refers > to the interface between the paint and the scintillator, then what is > the difference between polished and polishedfrontpainted?
> Am I also right in saying that we must specify dielectric_dielectric for > a scintillator wrapped with Al foil because the interface we are > referring to is the one between the scintillator and the air-gap?
yes, true for the 'backpainted' options.
> (this > also being the justification for why there is no backpainted option for > dielectric_metal?)
I guess, you can argue that - the two would again become redundant.
Hope this clarifies the situation.
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