Dear Arun,
Thank you for your question.
The answer will depend on the what the angular distribution is relative to:
-
If you are looking for an angular distribution in solid angle (sr) with respect to the particles trajectory and the boundary they are crossing then one could use USRBDX
- USRBDX will provide a particle fluence or current (not particle number)
- 7.22.88. USRBDX — FLUKA Manual specifically note 2 and 3
- USRBDX will provide a particle fluence or current (not particle number)
-
If you are looking for the angular distribution with respect to the beam orientation (or other as specified by user using SDUM), one can use USRYIELD
- USRYIELD will provide a particle yield
In each option taking care of units (polar angle, solid angle - particle number, yield, current or fluence) to normalise.
Please find in addition the slides on scoring from both the beginner and advanced FLUKA courses, which details both cases with examples.
Many thanks,
Katie