How to record the trajectory of particles like SRIM

Dear Fluka experts,
There is one problem that I can’t solve. The questions is :
I simulated neutron beam impacts on special materials using Fluka, What should I do if I want to obtain the trajectory of a secondary proton with an energy of 0.2 MeV produced by the interaction of a special material with neutrons, as in the SRIM program?

Cheers,
Yongce
source.f (9.2 KB)
try.inp (5.9 KB)

Dear @chenjianqi,

I would suggest you to search the forum for threads where similar problems were already discussed.

Dear amario,
Thank you for your advice, and I have find the solution that is to use the SRIM