| Autor: |
Ado, Mohammed, Wang, Qingyu, Ibrahim, Shehu Adam, Adede, Simon Ochieng |
| Zdroj: |
Journal of Nuclear Science and Technology; April 2023, Vol. 60 Issue: 4 p415-424, 10p |
| Abstrakt: |
ABSTRACTThis study employed classical molecular dynamics (MD) simulations to investigate radiation damage and Cerium (Ce4+) incorporation as surrogate of plutonium (Pu) at Zirconium (Zr4+) site in delta (δ) phase Y4Zr3O12material. The results indicate that Oxygen (O) disorder is dominant due to its higher number of survived defects with 2 keV, 5 keV and 10 keV cascade collision. The number of survived defects produced varies with primary knock-on atom (PKA), incident irradiation energy direction and increases with incident energy. A maximum survived defects of 28 along [103] and a minimum of 17 along [222] directions were generated among the eight different crystallographic directions studied using 5 keV cascade. Additionally, cascade overlap with 5 keV leads to substantial decrease in survival defects. Doping of certain number of Ce atoms at Zr site of δ-Y4Zr3O12may improve its radiation resistance in terms of survived defects formation using a 5 keV cascade. Furthermore, the results showed that the survived defects vary with the number of Ce atoms added, and the highest occurred at x = 0.5 (at equal number of Ce and Zr). Therefore, this work expands understanding of radiation damage effects mechanism in δ-Y4Zr3O12material for potential nuclear technology application. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
