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None neutrons quasi elastic in carbon 

Forum: Hadronic Processes
Date: 06 May, 2015
From: Carlos Ayerbe Gayoso <Carlos Ayerbe Gayoso>

Dear Geanters

I'm writing an aplication shooting neutrons with momentum of 4.5 GeV/c over a target of 40cm polystyrene (well, it is supposed to be 8 scintillator tiles of 5 cm each, in any case, plastic). I'm interested only in the elastic and quasielastic processes to be collected in a calorimeter. So the simulation is just a target and a calorimeter, just for simplification. Anyhow the my issue is more with the reaction than the simulation.

In principle I killed the neutrons which commit anything out of elastic, in fact I set 'fKillTrackandSecondaries'. But I found that the quasielastic is considered as inelastic in Geant (well, is natural consider it as inelastic), so is killed too.

My questions are: -is there any simple way to select such kind of events?

-should I build a process (QE) by myself?

-if so, how to access the information of the secondaries produced before start their tracking?

In the same line. I saw that if a neutron has an elastic process and later it has an inelastic, with the flag 'fKillTrackandSecondaries' I'm killing also the 'secondaries' of the previus interaction. Is there a way to keep such event? Is like I have

n+p(proton at rest)->n+p(with KE)

but later the neutron has an inelastic, the first is killed, but it is a good one. It is not really important since such event is not frecuent, but is interesting to understand such behavior.

I'm using Geant4 10.0.3, I choose FTFP_BERT library first and QGSP_BIC later to see how it works.

Thank you very much

Carlos

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1 None: Re: neutrons quasi elastic in carbon   (Dennis H. Wright - 18 May, 2015)
(_ Ok: Re: neutrons quasi elastic in carbon   (Carlos Ayerbe Gayoso - 18 May, 2015)
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