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Forum: Physics List
Date: 22 May, 2011
From: elnaz yazd <elnaz yazd>

Dear Geant4 Experts

Thanks you in advance for your considration and time.

I have a question about the subtype number of process which results in production of secondary gamma during interaction of proton with water.

when my physics list is only

/physic/addPhysics standard_opt3 # Electromagnetic model

/physic/addPhysics elastic # Hadronic elastic model

/physic/addPhysics binary # Hadronic inelastic model

/physic/addPhysics radioactive_decay # Radioactive decay

the resposible subtypes for gamma generation are (subtype=3, subtype=5, subtype=121, subtype=131 and subtype=-1)

but when the following model is added

"/physic/addPhysics local_ion_ion_inelastic # Hadronic inelastic model for ions (local physic list)"

to the above mentioned models in proton_therapy macro file, the subtype=-1 does not appear in output.

would you please tell me that which process is for subtype=-1 and is it neccesary to add the model "/physic/addPhysics local_ion_ion_inelastic " in proton interaction in order to simulate the secondary ion produced due to target fragmentation?.

With Best Regards

Yazdani

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1 Idea: Re: SubType   (Vladimir Ivanchenko - 24 May, 2011)
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