Abstract
A recent implementation and verification of consistent modeling of displacements per atom (DPA) in the MARS15 code are described for high-energy particles and heavy ions. Radiation damage is displacement of atoms from their equilibrium position in a crystalline lattice due to irradiation with formation of interstitial atoms and vacancies in the lattice. Resulting deterioration of material (critical) properties is measured - in the most universal way - as a function of displacements per target atom (DPA). DPA is a strong function of projectile type, energy and charge as well as material properties including its temperature. The phenomenon becomes very serious for high-intensity beams especially for high-charge heavy ions ({approx}z{sup 2}), being identified, for example at FRIB and FAIR, as one of the critical issues, limiting lifetime of targets to as low as a few weeks. A recent implementation of consistent DPA modeling into the MARS15 code [1] and its verification are described in this paper.
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