Some physical issues in simulation

Dear expert,

Continuing the discussion from How to record the energy spectrum of triton?:

Thanks for your clear guidance! But the parameter ‘Ekin frac’ in LOW-PWXS still confuse me.

I change it from 0.0001 to 0.1(Figure 1 -4), and I observed a marked difference. How do I decide which is the most suitable?

In addition, the literature shows the energies of particulate emissions are 2.05 and 2.75MeV. Why is it different from the simulation result?

Thanks in advance!

Hello @ZhongLy,

Once again, sorry for the delay.
The Ekin frac is not a parameter of LOW-PWXS but of FLUKAFIX card.

The oscillations you observe are artifacts resulting from excessively long steps. Using FLUKAFIX will address the issue by reducing the step size, thereby increasing precision. I suggest that you decrease the steps until these oscillations are eliminated.

0.0001 appears to be an appropriate value for your situation.

All the best,