The effects of self-interstitial clusters on cascade defect evolution beyond the primary damage state
- Pacific Northwest National Lab., Richland, WA (United States)
The intracascade evolution of the defect distributions of cascades in copper is investigated using stochastic annealing simulations applied to cascades generated with molecular dynamics (MD). The temperature and energy dependencies of annihilation, clustering and free defect production are determined for individual cascades. The annealing simulation results illustrate the strong influence on intracascade evolution of the defect configuration existing in the primary damage state. Another factor significantly affecting the evolution of the defect distribution is the rapid one-dimensional diffusion of small, glissile interstitial loops produced directly in cascades. This phenomenon introduces a cascade energy dependence of defect evolution that is apparent only beyond the primary damage state, amplifying the need for further study of the annealing phase of cascade evolution and for performing many more MD cascade simulations at higher energies.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 543301
- Report Number(s):
- DOE/ER--0313/21; ON: DE97008798
- Country of Publication:
- United States
- Language:
- English
Similar Records
Cascade defects beyond the primary damage state
Stochastic annealing simulations of defect interactions among subcascades
Effects of in-cascade defect clustering on near-term defect evolution
Book
·
Fri Oct 31 23:00:00 EST 1997
·
OSTI ID:541128
Stochastic annealing simulations of defect interactions among subcascades
Technical Report
·
Mon Mar 31 23:00:00 EST 1997
·
OSTI ID:543300
Effects of in-cascade defect clustering on near-term defect evolution
Technical Report
·
Fri Aug 01 00:00:00 EDT 1997
·
OSTI ID:543218