Search results for "Critical dose"

Aggregation of Frenkel defects under irradiation: a mesoscopic approach

1994

The radiation-induced aggregation of Frenkel defects in solids is studied in terms of a mesoscopic approach. The asymmetry in elastic interactions between mobile interstitials (I-I) and between interstitials and vacancies (I-V) plays a decisive riile in the aggregation of similar defects. The conditions for defect aggregation are studied in detail for NaCl crystals. The critical dose rate for aggregation has been calculated as a function of the temperature as well as the aggregation rate as a function of temperature and dose rate. Furthermore, the r&e of deep traps (like impurities and di-vacancies), reducing the mobility of interstitials, and the r&le of dislocations serving as sinks for i…