[Gate-users] Reflective surface not totally reflecting?

[Jenny Nilsson]

Hello Amy and other Gate users,

If you have a dielectric-dielectric surface with a polished finish, then optical photons can leave the volume through refraction. Reflectivity = 1 means that no optical photons are absorbed by the surface, but optical photons can still leave if refraction is chosen instead of reflection.

If you want all optical photons to be reflected then use a dielectric-metal surface with efficiency set to 0. 

Or

Use a dielectric-dielectric surface with ground-front-painted or polsihed-front-painted finish
Ground-front-painted: reflects all optical photons against a rough surface.
Polsihed-front-painted finish: reflects all optical photons against a polished surface.

Regards
Jenny Nilsson



24 mar 2014 kl. 14:55 skrev Amy Meldrum <ameldru at g.clemson.edu>:

> Hello everyone,
> 
> I am trying to define a completely reflective surface for a volume (aluminum foil). In my Surfaces.xml file for this surface I set Specular Spike = 1, and Reflectivity = 1. Yet when running a small simulation, it seems that some optical photons tend to end their track in the layer whose surface I had set to be reflective, rather than being reflected off of it and into other volumes in my geometry. Is there something I'm missing in defining the surface?
> 
> Thank you,
> 
> -Amy
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