Abstract
A combined theoretical and experimental effort to model various physical processes during laser ablation of solids using a variety of computational techniques is described. Currently the focus of the modeling is on the following areas: (a) rapid transformations through the liquid and vapor phases under possibly nonequilibrium thermodynamic conditions induced by laser-solid interactions; (b) breakdown of the vapor into a plasma in the early stages of ablation through both electronic and photoionization processes; (c) hydrodynamic behavior of the vapor/plasma during and after ablation; and (d) the effects of initial conditions in the vapor, in particular, the nature of the initial velocity distribution, on the characteristics of subsequent vapor expansion. The results from the modeling will be compared with experimental observations where possible.
| Original language | English |
|---|---|
| Pages (from-to) | 70-77 |
| Number of pages | 8 |
| Journal | Materials Science and Engineering B: Solid-State Materials for Advanced Technology |
| Volume | 47 |
| Issue number | 1 |
| DOIs | |
| State | Published - May 1997 |
Funding
This research was sponsored by the Division of Materials Sciences, US Department of Energy under Contract No. DE-AC05-840R21400 with Martin Marietta Energy Systems, Inc., and in part by an appointment to the Oak Ridge National Laboratory Postdoctoral Research Associates Program adnfinistered jointly by the Oak Ridge National Laboratory and the Oak Ridge Institute for Science and Education.
Keywords
- Computational modeling
- Gas dynamic
- Laser ablation
- Laser annealing
- Particle hydrodynamic
- Vapor breakdown