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Forum: Processes Involving Optical Photons
Re: None doped material properties (Jason Maldonis)
Date: 23 Jun, 2011
From: Joel Long <Joel Long>

Jason,

Properties related to optical physics (scintillation behavior, etc) are not handled the same way as other properties. Those properties are set via the G4MaterialPropertiesTable associated with a G4Material. In principle, you could "pass" these properties to your new, mixed material, but giving the new material a copy of the same G4MaterialPropertiesTable (if it has a copy constructor, I haven't checked), but this is almost certainly a bad idea - the new material will not have all the same properties. Some things, like its fast and slow time constants, may be, but its absorption spectrum will be completely different because of the other material mixed in. Geant4 cannot calculate these sorts of properties because they are macroscopic, dependent on things like molecular arrangement, not simple atomic composition. *We* know there is a huge difference between diamond and carbon; Geant4 just knows that one is more dense.

Hope this helps, Joel

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1 None: Re: doped material properties   (Joel Long - 23 Jun, 2011)
2 None: Re: doped material properties   (Jason Maldonis - 23 Jun, 2011)
1 Idea: Re: doped material properties   (Joel Long - 23 Jun, 2011)
1 More: Re: doped material properties   (Joel Long - 23 Jun, 2011)
2 None: Re: doped material properties   (Jason Maldonis - 23 Jun, 2011)
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