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Forum: Biasing and Scoring
Re: Question Neutron energy deposit on hafnium dioxide
Re: None Re: Neutron energy deposit on hafnium dioxide (michel maire)
Re: None Re: Neutron energy deposit on hafnium dioxide
Re: None Re: Neutron energy deposit on hafnium dioxide (michel maire)
Date: 09 Oct, 2017
From: <jeonyboy@gmail.com>

On Mon, 09 Oct 2017 16:54:32 GMT, michel maire wrote:

>  1- It is not directly related. Kinetic energy of secondaries which are not generated (e.g. below threshold) are counted in the dE/dx of the primary particle. I would suggest to keep default cut ( ~ 1 mm). Playing with cuts will be a later refinement.
> 
>  2- Make sure that you have neutronHP in your physics list (compare with hafnium.out.txt).
> 
>  3- Around 1 eV, neutron capture dominates, cross section increases, mean free path is "only" ~0.5 mm
>       Then ~10^7 events would allow to see few interactions.
> 
>  4- At most energies, elastic collisions may be important. The recoil nucleus contributes to energy deposition. But, for various reasons, this recoil nucleus is not generated by default.
>  To create it, make sure that your physics list includes the statement  setCutValue(0*mm, "proton") 
>  Instead, you can use the command /run/setCutForAGivenParticle  proton  0.  mm
>  (if you do not understand well what I am speaking about, play with Hadr03 ...)
> 
>  5- I tried your exercice with Hadr07. I attach macro, output and plot. As you will see, there are 94 interactions  for 10^7 events.
> 

Wow thank you so much for your help. That is exactly what I wanted to see. I tried to replicate your simulation but I did not have hadr07 example because I am using 10.2 so I upgrade to 10.3 (Windows) but now I am having compiling error at ElectromagneticPhysics.cc where it says I am missing two members from G4EmParameters and indentifer "GetParticleIterator" being undefined.

I have updated all the data files as well and am downloading the G4TENDL1.3 just in case this data set is needed for Hadr07. I apologize if my questions are incredibly basic c++ language stuff. I am trying to google/search to find answers but running into walls.

Thank you again sincerely!

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