Simulation of stimulated Brillouin scattering and stimulated Raman scattering in shock ignition

• DOI: 10.1063/1.4945647
• Publication Date: 2016-04-09T12:29:56Z
• Authors: L. Hao; J. Li; W. D. Liu; R. Yan; C. Ren
• Keywords: Intensity

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 less than 3.5 W/cm2. The PIC show similar physics but higher saturation levels convective modes stronger due seed electromagnetic fields codes. Plasma flow profiles are found important proper modeling limiting its reflectivity both