Abstract
A comparison of radiation defect creation in high-energy displacement cascades in two metals with close-packed crystal structures, namely FCC (Cu) and HCP (α-Zr) has been conducted. The report consolidates the results of molecular dynamic simulations of over 400 displacement cascades in copper and 240 cascades in zirconium. The simulations were carried out for a wide range of temperature (100-900 K), and primary knock-on atom (PKA) energy (5-25 keV). For both metals the dependence of the number of Frenkel pairs and the fraction of point defects in clusters on temperature and PKA energy were obtained. Similarities and differences in point defect cluster stability are contrasted for the two metals and the influence of material on the accumulation of primary damage is considered.
| Original language | English |
|---|---|
| Pages (from-to) | 68-70 |
| Number of pages | 3 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms |
| Volume | 242 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - Jan 2006 |
Funding
This research was supported by Grant FIKS-CT-2001-00137 (‘SIRENA’) from the Council of the European Commission and by Contract T27L92-F56398 with Electricité de France.
Keywords
- Atomic-scale modeling
- Cluster of point defects
- Displacement cascade
- Frenkel pair