| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Understanding and Predicting Dynamic Behavior of Materials
|
| Presentation Title |
Experimental and Computational Studies of Laser-driven Shocks through Metal Surface Perturbations and Planar Grooves |
| Author(s) |
Fady Najjar, Alison M. Saunders, Camelia Stan, Hye-Sook Park, Suzanne Ali, Jon Eggert |
| On-Site Speaker (Planned) |
Fady Najjar |
| Abstract Scope |
Understanding the mechanisms of ejecta-ejecta interactions and ejecta collisions has relevance to many applications including dynamic behavior of materials, spacecraft shielding, and planetary impacts. Much research work has examined the underlying physics of ejecta sourcing and transport; however, few examples of experiments that study the effects of ejecta-surface interactions exist. We extend ejecta interaction studies to laser facilities allowing us to take advantage of the higher repetition rates, the repeatability of drive conditions, and the advanced time-resolved diagnostics suites. This talk will present results from experiments being fielded on LLE’s OMEGA lasers and report on the development of platforms to study microjetting formation and interactions from planar divots. Further, we will describe our computational effort supporting this experimental campaign.
Work performed under the auspices of the U.S. Department Of Energy by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344 and supported by LDRD Grant No. 18-ERD-060. LLNL-ABS-780377. |
| Proceedings Inclusion? |
Undecided |