A5030860847- Laser-induced spectroscopy and plasma
- Laser-Matter Interactions and Applications
- Laser-Plasma Interactions and Diagnostics
- Laser Material Processing Techniques
- Metal and Thin Film Mechanics
- Advanced Surface Polishing Techniques
- Advanced machining processes and optimization
- Additive Manufacturing Materials and Processes
Purdue University West Lafayette
2024
University of Rochester
2016-2017
We developed a new nonlinear fluid laser-plasma-instability code (FLAME) using multi-fluid plasma model combined with full electromagnetic wave equations. The completed one-dimensional version of FLAME was used to study laser-plasma instabilities in shock ignition. simulations results showed that absolute stimulated Raman scattering (SRS) modes growing near the quarter-critical surface were saturated by Langmuir-wave Decay Instabilities (LDI) and pump depletion. ion-acoustic waves from LDI...
We study stimulated Brillouin scattering (SBS) and Raman (SRS) in shock ignition by comparing fluid particle-in-cell (PIC) simulations. Under typical parameters for the OMEGA experiments [Theobald et al., Phys. Plasmas 19, 102706 (2012)], a series of 1D simulations with laser intensities ranging between 2 × 1015 1016 W/cm2 finds that SBS is dominant instability, which increases significantly incident intensity. Strong pump depletion caused SRS limits transmitted intensity at 0.17nc to be...