Effects of high intensity Laser Plasma Interaction on hydrodynamic simulations

Hydrodynamic simulations of laser plasma do not take account of LPI that are induced by the intense laser($I_{L}$ \textgreater 10$^{\mathrm{15}}$ W/cm$^{\mathrm{2}})$. In order to improve the accuracy of hydrodynamic simulation in LPI regime, development of numerical model of LPI is necessary. We evaluate effects of LPI related to hydrodynamic simulations using a 1-D PIC code. Assuming the laser wavelength and intensity are 0.5 micron and 10$^{\mathrm{16}}$ W/cm$^{\mathrm{2}}$ respectively, intensity exceeds LPI thresholds$^{\mathrm{[1]}}$ and we should think absolute and convective SRS and SBS. We conducted several simulations with the different plasma scale lengths(100, 200, and 300 micron). Laser intensity is set to 10$^{\mathrm{16}}$ W/cm$^{\mathrm{2}}$. In the results, due to the SRS and SBS, reflected light shows periodic behavior and the period depends on the plasma scale length. Scattered light at $n_{cr}$/4 by the SRS is scattered again at $n_{cr}$/16 and a density cavitation is observed there. This procedure is called Raman cascade. In case of 100 micron of the plasma scale length, a density cavitation at $n_{cr}$/16 did not appear. We discuss the detail of characteristics, and implementation into hydrodynamic codes in this presentation.