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Forum: Medical Applications
Re: Question Neutron Flux (Aqsa)
Date: 27 May, 2018
From: Susanna <Susanna>

Dear Aqsa

Which physics list are you using?

Kind regards
Susanna



Sent from my Samsung Galaxy smartphone.


-------- Original message --------
From: Aqsa <skaqsa.95@gmail.com>
Date: 28/5/18 3:36 pm (GMT+10:00)
To: medical_app-g4hn@slac.stanford.edu
Subject: Neutron Flux


*** Discussion title: Medical Applications

I have written a simple program in which I need to obtain photon flux by
hitting energetic electrons on a Tungsten target. In the program I have
also added a detector for counting neutron flux. Since my photon energy
will be crossing GDR I am expecting considerable amount of neutron
production. When I compared the neutron yield obtained from my GEANT4
code to that of few theoretical formulae and experimental yield given in
papers, I found that GEANT4 is giving much less neutron flux (In extreme
cases as much as one order less) than expected from theory. I know that
simulation codes tend to underestimate the yields but I am worried if
one order less is too much of underestimate. Any suggestions?

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