Where can I find scintillation properties for xenon gas?

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In summary, the speaker is looking for scintillation properties for xenon gas, specifically photon yield and time constant, for a simulation in Geant4. They have searched Google, the local library, and various journals, but have not found any information. They are asking for help in finding this information and have provided a sample of code for defining scintillation properties in their simulation. Another speaker suggests a publication that may be helpful.
  • #1
ultimateguy
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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
 
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  • #2
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
ultimateguy said:
I am trying to find scintillation properties for xenon gas (such as the photon yield, the time constant, etc.)

Photon yield for a gas ? Why ? Usually light yield concerns cristals.
What is the application ?
 
  • #4
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();
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);

Water->SetMaterialPropertiesTable(myMPT1);
 
Last edited:
  • #5

1. What is scintillation?

Scintillation is a phenomenon that occurs when certain materials, known as scintillators, emit light when exposed to ionizing radiation such as X-rays or gamma rays. This emitted light can be measured and used to detect and measure the radiation.

2. What are some commonly used scintillators?

Some commonly used scintillators include sodium iodide, cesium iodide, and anthracene. These materials have high light output and are sensitive to a wide range of ionizing radiation. They are often used in medical imaging and radiation detection applications.

3. How are scintillators used in radiation detection?

Scintillators are often used in conjunction with a photodetector, such as a photomultiplier tube or silicon photodiode, to detect and measure the light emitted by the scintillator. This light is then converted into an electrical signal, which can be analyzed to determine the type and intensity of the radiation that was detected.

4. What are some important factors to consider when selecting a scintillator?

Some important factors to consider when selecting a scintillator include its emission wavelength, decay time, light output, and sensitivity to different types of radiation. The specific application and requirements will also play a role in determining the most suitable scintillator for a given experiment or instrument.

5. Are there any resources available for learning more about scintillation?

Yes, there are several resources available for learning more about scintillation, including scientific journals, books, and online resources. Additionally, many universities and research institutions offer courses and workshops on scintillation and its applications. Networking with other scientists and attending conferences and seminars can also provide valuable information and resources on scintillation.

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