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Question Fresnel reflection 

Forum: Processes Involving Optical Photons
Date: 29 Jan, 2009
From: Heide <Heide>

I simulated simply a beam of monochromatic optical photons (400 nm) passing through two blocks of materials (air and glass with refractive indexes 1 and 1.47 respectively) and I changed the incident angle to see if the amount of reflected photons respected the Fresnel law. Strangely at Theta=0 degrees (where Theta is the angle of the incident photon beam in respect to the perpendicular to the surface of the interface) the Fresnel law is respected, while if Theta is different from 0 (0.1,2,10.....) the Fresnel law is not anymore respected. For theta =0 I obtain a 3% of reflected photons as expected while at theta=1 degree I obtain 22% of reflected light that has no sense. I'm using the geant4 version geant4.8.0.p01

Does anybody know what is going on?

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