Cascade localization induced bias effect for void growth

The basic formulation of the cascade localization induced bias (CLIB) effect, which originates from the difference in the initial distribution of interstitials and vacancies in a cascade, is given and a theoretical method to evaluate the strength of the effect is developed. Solutions for the dissipation of point defects produced by cascades are derived for three cases, and the growth of voids by CLIB is predicted. Case 1: Only voids exist and no other sinks such as dislocations and surfaces exist. Case 2: Some density of voids is surrounded by neutral sinks. Case 3: Voids and dislocations are coexistent and surrounded by neutral sinks. A void nearby a cascade can grow by CLIB in case 1, but the growth will be canceled by absorption of excess interstitials sent from other cascades. When sinks other than voids exist, as in Case 2 and 3, the void growth by CLIB becomes effective by the increase of the annihilation of point defects in the sinks. Synergistic effects with dislocation bias are discussed