Dear Felix,
there are several ways to obtain what you are asking for.
The simplest is to score in separate USRBIN detectors DOSE (i.e.,
generalised particle 228, total dose) and DOSE-EM (generalised particle 241,
electromagnetic dose). Dose due to hadrons (protons, in your case) can be
calculated as the difference between the two.
To avoid DOSE-EM to account for dose due to secondary electrons produced
by protons, you must completely eliminate delta rays by setting a very
high delta-ray threshold with command DELTARAY. Set the delta ray threshold
higher than the highest energy of the source spectrum.
Another possible solution of your problem is to use command DISCARD: you can
discard the protons, so the dose you score will be due only to capture photons.
Alberto
On Fri, 13 Feb 2015, Felix Ernst Horst wrote:
> Dear FLUKA experts,
>
> I am currently simulating the absorbed dose profile from neutrons (spectrum
> from ~10 MeV down to thermal energies) in a water phantom by USRBIN.
> That dose distribution should consist of amounts from recoil nuclei (in water
> mainly recoil protons) and gamma photons from neutron capture (in water
> mainly on hydrogen) respectively their secondary electrons. Is it possible to
> separate these two dose components from each other (e.g. by switching off one
> of these two interaction mechanisms while the other remains switched on)?
> Which physic cards are responsible for these two mechanisms?
>
> Thank you
> Regards
>
> Felix
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Received on Mon Feb 16 2015 - 11:06:22 CET