# Resources for scintillation

1. Jul 23, 2007

### ultimateguy

I am trying to find scintillation properties for xenon gas (such as the photon yield, the time constant, etc.) but so far I have come up with nothing. I searched Google, I've looked at the local library and I've searched various journals, but to no avail. Does anyone know where I would be able to find such information?

Thanks

2. Jul 23, 2007

### humanino

Hi,

Xe @ PDG
Xe @ webelements

I am not sure that helps however. If I needed to get your informations, I guess I would run a simulation.

3. Jul 24, 2007

### Barmecides

Photon yield for a gas ? Why ? Usually light yield concerns cristals.
What is the application ?

4. Jul 24, 2007

### ultimateguy

I am doing a simulation in Geant4 with a xenon gas filled cylinder, and I need to take into account scintillation. Geant4 requires that the user sets the scintillation properties of the material. The simulation consists of pretty much electrons and gamma rays only.

Edit: here is a sample of code in which you define scintillation (C++ code):

const G4int nEntries = 32;

G4double PhotonEnergy[nEntries] =
{ 2.034*eV, 2.068*eV, 2.103*eV, 2.139*eV,
2.177*eV, 2.216*eV, 2.256*eV, 2.298*eV,
2.341*eV, 2.386*eV, 2.433*eV, 2.481*eV,
2.532*eV, 2.585*eV, 2.640*eV, 2.697*eV,
2.757*eV, 2.820*eV, 2.885*eV, 2.954*eV,
3.026*eV, 3.102*eV, 3.181*eV, 3.265*eV,
3.353*eV, 3.446*eV, 3.545*eV, 3.649*eV,
3.760*eV, 3.877*eV, 4.002*eV, 4.136*eV };
//
// Water
//
G4double RefractiveIndex1[nEntries] =
{ 1.3435, 1.344, 1.3445, 1.345, 1.3455,
1.346, 1.3465, 1.347, 1.3475, 1.348,
1.3485, 1.3492, 1.35, 1.3505, 1.351,
1.3518, 1.3522, 1.3530, 1.3535, 1.354,
1.3545, 1.355, 1.3555, 1.356, 1.3568,
1.3572, 1.358, 1.3585, 1.359, 1.3595,
1.36, 1.3608};

G4double Absorption1[nEntries] =
{3.448*m, 4.082*m, 6.329*m, 9.174*m, 12.346*m, 13.889*m,
15.152*m, 17.241*m, 18.868*m, 20.000*m, 26.316*m, 35.714*m,
45.455*m, 47.619*m, 52.632*m, 52.632*m, 55.556*m, 52.632*m,
52.632*m, 47.619*m, 45.455*m, 41.667*m, 37.037*m, 33.333*m,
30.000*m, 28.500*m, 27.000*m, 24.500*m, 22.000*m, 19.500*m,
17.500*m, 14.500*m };

G4double ScintilFast[nEntries] =
{ 1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00,
1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00,
1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00,
1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00,
1.00, 1.00, 1.00, 1.00 };
G4double ScintilSlow[nEntries] =
{ 0.01, 1.00, 2.00, 3.00, 4.00, 5.00, 6.00,
7.00, 8.00, 9.00, 8.00, 7.00, 6.00, 4.00,
3.00, 2.00, 1.00, 0.01, 1.00, 2.00, 3.00,
4.00, 5.00, 6.00, 7.00, 8.00, 9.00, 8.00,
7.00, 6.00, 5.00, 4.00 };

G4MaterialPropertiesTable* myMPT1 = new G4MaterialPropertiesTable();