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Feedback Re: Surface Properties:how to model a diffusive (98%) and absorbing (2%) surface  

Keywords: surface absorbing diffuse
Forum: Geometry
Re: Question Surface Properties:how to model a diffusive (98%) and absorbing (2%) surface (Maria Lucia Magliozzi)
Re: Feedback Re: Surface Properties:how to model a diffusive (98%) and absorbing (2%) surface (Gumplinger Peter)
Date: 28 Jul, 2005
From: Maria Lucia <lucia.magliozzi@iss.infn.it>

Hi and... Thank you!

Could I use the same "code logic" in case 
of the glisur-model but dielectric_dielectric?

I have to model an element of a NaI scintillator,
composed by a scintillator crystal inclused in a 
box of epoxy--EpoxyElement_log--.

I use the G4AssemblyVolume class to construct 
the scintillator, so I can't define the surface optical properties
by means of border surface(crystals/epoxy).

The scintillator optical properties are attached 
as skin surface properties
to the logical volume EpoxyElement_log.  

It has to be 98% diffusive and 2% absorbing.

This is the fragment of my code

  //**Epoxy element surface properties
  const G4int num = 2;
  G4double Ephoton[num] = {2.58*eV , 3.54*eV};

  G4OpticalSurface* Epoxy_OpSurf 
   = new G4OpticalSurface("EpoxySurface",glisur,ground,dielectric_dielectric);
  G4double Epoxy_REF[num] = {0.98, 0.98};  
  G4MaterialPropertiesTable* EpoxyEl_mpt 
   = new G4MaterialPropertiesTable();
  EpoxyEl_mpt->AddProperty("REFLECTIVITY", Ephoton, Epoxy_REF, num);
  Epoxy_OpSurf->SetMaterialPropertiesTable(EpoxyEl_mpt);
  G4LogicalSkinSurface* Epoxy_Surf 
    =  new G4LogicalSkinSurface("Epoxy_Surf", EpoxyElement_log, Epoxy_OpSurf );

Is it the implementation of what i want to do?

The value of G4double polish should be set to 0.0 (default),
isn't it?

Thank you in advantage

MLucia

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