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Question Strange behavior of the OpWLS process 

Forum: Processes Involving Optical Photons
Date: 21 Jun, 2012
From: vesna cuplov <vesna cuplov>

Dear everyone:

I'm using the OpWLS process of Geant4 with the following version of the code: Geant4.9.5.p01.

I notice that the fluorescent photon has an energy greater than the excitation photon. I haven't seen this with Geant4.9.4.

#Step#    X(mm)    Y(mm)    Z(mm) KinE(MeV)  dE(MeV) StepLeng TrackLeng  NextVolume ProcName
    8   -0.469   -0.234    0.305  3.06e-06        0    0.232       2.2 module_phys OpticalWLS
Track (trackID 1, parentID 0) is processed with stopping code 2
A new track 0x30c1790 (trackID 2, parentID 1) is passed to G4StackManager.
### pop requested out of 1 stacked tracks.
Selected G4StackedTrack : 0x30c1a90 with G4Track 0x30c1790 (trackID 2, parentID 1)
Track 0x30c1790 (trackID 2, parentID 1) is passed to G4TrackingManager.

*********************************************************************************************************
* G4Track Information:   Particle = opticalphoton,   Track ID = 2,   Parent ID = 1
*********************************************************************************************************

Step#    X(mm)    Y(mm)    Z(mm) KinE(MeV)  dE(MeV) StepLeng TrackLeng  NextVolume ProcName
    0   -0.469   -0.234    0.305  4.13e-06        0        0         0 module_phys initStep

The excitation photon energy was 3.06e-06 MeV and after the OpticalWLS process it is changed to 4.13e-06 MeV.

Does anyone know what could be the reason of this behavior?

thank you for your help, vesna

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1 Feedback: Re: Strange behavior of the OpWLS process   (Gumplinger Peter - 21 Jun, 2012)
(_ Ok: Re: Strange behavior of the OpWLS process   (vesna cuplov - 25 Jun, 2012)
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