Atom transport efficiency in heavy ion irradiated metals
Abstract
Multi-layer specimens were used to investigate diffusion near the irradiated surface in nickel single crystals under heavy ion irradiation at temperatures around the swelling rate maximum 800-950 K. Analysis of the data yields information on the effective fraction η of the displacement rate, with which transporting defects are produced (production rate of freely migrating defects), and on the radiation-induced sink strength. Upper limits of η=7% are calculated for a self-ion irradiation at 950 K. In the investigated temperature range defect kinetics is dominated by the high sink strength of about 10 15 m -2.
- Publication:
-
Journal of Nuclear Materials
- Pub Date:
- 1999
- DOI:
- 10.1016/S0022-3115(98)00644-8
- Bibcode:
- 1999JNuM..271...52F