A molecular dynamics study of a cascade induced irradiation creep mechanism in pure copper

Recently, in-situ TEM straining experiments on pure copper have unraveled a high stress irradiation creep mechanism. Irradiation induced unpinning of dislocations from defects has been observed and the mean pinning lifetime has been determined. In the present study, molecular dynamics simulations are performed on pure copper to investigate the impact of collision cascades on screw dislocations pinned on Frank loops under high-applied stresses …