Reflectivity and Lambertian reflectance for optical photons in FLUKA

From: Georgios Tsiledakis <>
Date: Fri, 7 Oct 2011 14:46:01 +0000

Dear FLUKA experts,

I would like to simulate optical UV photons that hit a material.
As far as I understood by using the OPT-PROP card I can
define optical properties at a given material like its
reflectivity. Like the example in the manual:

Example 2:

  * Material 11 has a reflectivity index =3D 0.32
  0.0 0.0 0.32 11.0 0.0 0. METAL

BUT if the surface is not specular (specular = such a glass or polished metal),
the reflectivity is uniform ( Lambertian reflectance).
Is this property implemented in FLUKA?
Since most real objects have some mixture of diffuse and specular reflective properties,
could you have any suggestion how I could proceed?

Thank you very much in advance

Best regards

Received on Fri Oct 07 2011 - 20:17:13 CEST

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