- RESNUCLEi does not give dose per primary. It gives production yields or activities, as recently pointed out.
- The number of primaries has no physical meaning. You have to multiply by the real beam intensity to get sensible results.
- RESNUCLEi scores by region. If one nucleus is produced in one region but moves to another, it shall be scored in the latter. As for nuclear elastic scattering, see the release notes:
- Nuclear recoils with the same atomic and mass number as the target isotope
(e.g. from (n,el), (n,n'), (p,p'), etc.) now contribute to RESNUCLEi scoring
only when reaching a different geometry region.
So a pre-existing nucleus of a given material is counted as residual nucleus only when displaced to another region.
4. RESNUCLEi and usrrnc.f obviously give consistent results. If not, there is likely a problem in your routine or post-processing. The variable MREG enables the region distinction also in usrrnc.f. As earlier mentioned, a heavy isotope may be scored in water if it moves there. If you want to see where it was actually produced, you can use the last ENTRY of mgdraw.f.
5. To check the above consistency, it’s indeed convenient to run one single cycle.