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Question scintillation spectrum of the scintillator 

Forum: Processes Involving Optical Photons
Date: 13 Jan, 2011
From: <Mike>

Hello,

I want to define a scintillator with a certain scintillation spectrum. One side of the scintillator is sensitive. There the generated photons are absobed and th deposited energy is collected with:

edep = aParticle -> GetTotalMomentum();

The values edep I plot in a histogramm. But the histogramm shows a flat curve instead of a curve with a max at 2.25eV.

I defined the following properties for my scintillator

   const G4int nEntries = 3;

   G4double PhotonEnergy[nEntries] = { 2.5*eV, 2.25*eV, 2.0*eV };

   G4double RefractiveIndex1[nEntries] =
             {1.5, 1.5, 1.5};

   G4double Absorption1[nEntries] =
            {5*m, 5*m, 5*m};

   G4double ScintilFast[nEntries] =
            {0.5, 1.0, 0.5};
   G4double ScintilSlow[nEntries] = 
            {0.5, 1.0, 0.5};

   G4MaterialPropertiesTable* myMPT1 = new G4MaterialPropertiesTable();
   myMPT1->AddProperty("RINDEX",       PhotonEnergy, RefractiveIndex1,nEntries);
   myMPT1->AddProperty("ABSLENGTH",    PhotonEnergy, Absorption1,nEntries);
   myMPT1->AddProperty("FASTCOMPONENT",PhotonEnergy, ScintilFast,nEntries);

   myMPT1->AddProperty("SLOWCOMPONENT",PhotonEnergy, ScintilSlow,nEntries);
   myMPT1->AddConstProperty("SCINTILLATIONYIELD",50./MeV);
   myMPT1->AddConstProperty("RESOLUTIONSCALE",1.0);
   myMPT1->AddConstProperty("FASTTIMECONSTANT", 1.*ns);
   myMPT1->AddConstProperty("SLOWTIMECONSTANT",10.*ns);
   myMPT1->AddConstProperty("YIELDRATIO",0.8);

Did I defined the relative shape of the spectrum in

   G4double ScintilFast[nEntries] =
            {0.5, 1.0, 0.5};
   G4double ScintilSlow[nEntries] = 
            {0.5, 1.0, 0.5};

in a false way?

Thanks for your help!

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1 Feedback: Re: scintillation spectrum of the scintillator   (Gumplinger Peter - 17 Jan, 2011)
(_ Feedback: Re: scintillation spectrum of the scintillator   (Mike - 24 Jan, 2011)
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