Depth distribution of self-ion damage in nickel

Abstract

The depth distribution of displacement damage produced by 4 MeV Ni ions in nickel single crystals has been studied by a transmission electron microscope technique. The experimental damage profiles have been compared with the calculated damage energy versus depth curves using the E-DEP-1 computer code of Manning and Mueller. The calculated damage peak is 16% too near the surface using the theoretical value of the electronic stopping parameter, k = 0.162, of Lindhard, Scharff and Schiøtt. Good agreement is obtained for a reduced value of k = 0.126. The energy deposition tables of Brice underestimate the experimentally observed peak depth by 5%.