|Message: SCINTILLATIONYIELD and number of photons||Not Logged In (login)|
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by geant4.7.0, I am simulating a plastic scintillator plane with thickness 2cm. Several muons are vertically beamed into the detector, and SCINTILLATIONYIELD is set 10./MeV. G4LowEnergyIonisation is added, and All photons are counted. In this simplest case, one very nice landau distribution of photons is obtained, but MPV of the distribution is 68.1, not as expected as 40 (1MIP is 2MeV/cm, so photons generated in 2cm thick detector should be 10./MeV x 2MeV/cm x 2cm=40). Could you please tell me what relation between SCINTILLATIONYIELD and mean value or MPV of generated photon distribution is? Moreover, sigma of the distribution is 5.335. My question is which "key" decides sigma? Thanks.
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