TFluka* fluka = (TFluka*) gMC;
TGeoMaterial* material = (TGeoMaterial*) (fluka->GetFlukaMaterials())->At(fluka->GetMaterialIndex(mmat));
TFlukaCerenkov* cerenkov = dynamic_cast<TFlukaCerenkov*> (material->GetCerenkovProperties());
- Double_t y = (cerenkov->GetReflectivityByWaveLength(wvlngt));
+ Double_t y = 0.;
+ if (cerenkov->IsMetal()) y = (cerenkov->GetReflectivityByWaveLength(wvlngt));
return (y);
}
}