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Forum: Event and Track Management
Re: Question Storing neutron events using SD (C Mos)
Re: Warning Re: Storing neutron events using SD (Michael H. Kelsey)
Re: More Re: Storing neutron events using SD (C Mos)
Date: 01 Nov, 2012
From: Michael H. Kelsey <Michael H. Kelsey>

C Mos writes:
> Regarding inelastic scattering, I should understand the original neutron
> disappears and a new neutron is added to the list of secondary
> particles, right? So I am assuming this new neutron will have a
> different trackID?

Yes, that is correct.  At very low energies, there's likely just zero or one
outgoing neutrons, but at higher energies, you can imagine that the final
state may contain multiple neutrons and protons.

> In general, is there any meaningful way to record neutron energy lost?
> Or should I record something like change in neutron kinetic energy? If I
> do that, then I will have to make sure those changes are recorded only
> for neutrons going elastic scattering in case I am storing track
> information.

I think your best bet is to try the delta-KE (pre-step - post-step)
approach, but even there you may not be totally successful with what you
think you're recording.

> Just for curiosity, when estimating dose deposited by neutrons, how is
> that generally calculated? Would that come from all the energy deposited
> by its secondary particles?

I'm afraid I'll have to defer this to someone who does experimental neutron
physics.
      -- Mike

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