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None question about muon capture in water 

Forum: Physics List
Date: 15 Aug, 2006
From: <>

Hi everyone,

I met a question when simulating mu- capture in Water. However, when the kinetic energy of primary mu- is 1.2GeV, there always is a segmentation and the tracking information shows that a N15 is produced in Water as a daughter particle of the primary mu-:

* G4Track Information:   Particle = N15[0.0],   Track ID = 194153,   Parent ID = 1

Step#    X(mm)    Y(mm)    Z(mm) KinE(MeV)  dE(MeV) StepLeng TrackLeng  NextVolume ProcName
    0    -57.9      349 -2.06e+03     0.435        0        0         0       water initStep
    1    -57.9      349 -2.06e+03     0.435        0 1.8e+308  1.8e+308       water User Limit

I don't know why, the track length is so long. When the kinetic energy isn't 1.2GeV, the program run well. Is it a bug?

Many thanks. H.Q. Lu

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