Modeling of long term behavior of ablation plumes produced with ultrashort laser pulses

Conference · Thu Feb 10 00:00:00 EST 2000

OSTI ID:756844

Feit, M D; Komashko, A M; Rubenchik, A M

Expansion of ablation plumes created by intense ultrashort lasers is determined by various complicated physical processes which have very different spatial and time scales. Since complete simulation by one model is practically impossible, the authors suggest using two models describing initial and final stages that can be matched at an intermediate time. The proposed modeling procedure connects laser parameters to plume properties far away from the ablation spot. Laser material interaction and beginning of the expansion are simulated with a one-dimensional hydrodynamics code and the final stage is modeled using an analytical solution for an expanding three-dimensional ellipsoidal gas cloud.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE Office of Defense Programs (DP) (US)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 756844
• Report Number(s): UCRL-JC-134996; KC0301030; KC0301030; TRN: US0003865
• Resource Relation: Conference: Photonics West 2000 Conference Proceedings, San Jose, CA (US), 01/22/2000--01/28/2000; Other Information: PBD: 10 Feb 2000
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
LASER RADIATION
ABLATION
MATHEMATICAL MODELS
ENERGY ABSORPTION
HYDRODYNAMICS
PLUMES
ENERGY BEAM DEPOSITION
MATERIALS