I have done some SRIM-TRIM analysis on some metals. Please which of these outputs (Ionization, Sputtering, Vacancies, Range etc) is best describing the damage.
In SRIM you have in "Distributions" Damage Events, which includes Displacements Vacancies formation, and etc. I think all these events describe well damage process.
What most people use is "displacements", converted from SRIM's rather odd units into dpa.
But beware! Some versions of TRIM / SRIM have "issues". Read this article for more information (in fact every user of SRIM should read this article!) :
"On the use of SRIM for computing radiation damage exposure ", Roger Stoller et al.,
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Volume 310, 2013, Pages 75-80