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Question Optical Photon Absorption Data for a Scintillation Simulation 

Forum: Processes Involving Optical Photons
Date: 13 Mar, 2009
From: <jdswado@gatech.edu>

Hello all,

I'm trying to perform a simple scintillation experiment with Geant using a NaI(Tl) crystal but I do not know where to find the data for the scintillation property Absorption. Does anyone have an idea where I could find this data or how I could determine it?

I've found data for the refractive indexes and scintilfast entries but the absorption data is difficult to find.

  G4double PhotonEnergy[nEntries] =
            { 3.2627, 3.1791, 3.0996, 3.024, 2.952,
              2.8833, 2.8178, 2.7552, 2.6953, 2.6379,
              2.583, 2.5303, 2.48, 2.431, 2.3843,
              2.3393, 2.296, 2.254, 2.214, 2.1751,
              2.1376, 2.1014, 2.0664, 2.0325, 1.9997,
              1.9678, 1.9372, 1.9074, 1.8785, 1.8505,
              1.8233, 1.7969, 1.7712, 1.7462, 1.722,
              1.6984, 1.6754, 1.6531};

//Now, where can I find what goes here:

  G4double Absorption1[nEntries] =
            { 1.0, 1.0,  1.0, 1.0,  1.0,
              1.0, 1.0,  1.0, 1.0,  1.0,
              1.0, 1.0,  1.0, 1.0,  1.0,
              1.0, 1.0,  1.0, 1.0,  1.0,
              1.0, 1.0,  1.0, 1.0,  1.0,
              1.0, 1.0,  1.0, 1.0,  1.0,
              1.0, 1.0};

Thank you very much in advance, Jason

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