后向受激拉曼散射的受激布里渊散射
Stimulated Brillouin scattering of backward stimulated Raman scattering.
作者信息
Feng Qingsong, Cao Lihua, Liu Zhanjun, Zheng Chunyang, He Xiantu
机构信息
Institute of Applied Physics and Computational Mathematics, Beijing, 100094, China.
HEDPS, Center for Applied Physics and Technology, Peking University, Beijing, 100871, China.
出版信息
Sci Rep. 2020 Feb 26;10(1):3492. doi: 10.1038/s41598-020-59727-4.
The rescattering of backward stimulated Raman scattering (BSRS) by stimulated Brillouin scattering (SBS) is found in the high electron density region by relativistic Vlasov-Maxwell simulation and particle-in-cell (PIC) simulation, where the BSRS is in the regime of absolute instability and dominates in all the scatterings. Both one dimension (1D) Vlasov simulation and two dimension (2D) PIC simulation have been given to verify that there exists SBS of BSRS in the regime of absolute instability for BSRS. The SBS of BSRS will be even stronger than forward stimulated Raman scattering (FSRS) and SBS in regime of absolute instability for BSRS. Thus, besides Langmuir decay instability and laser energy absorption, the SBS of BSRS is also an important saturation mechanism of BSRS in high electron density region.
通过相对论性弗拉索夫 - 麦克斯韦模拟和粒子模拟（PIC），在高电子密度区域发现了受激布里渊散射（SBS）对后向受激拉曼散射（BSRS）的再散射，其中BSRS处于绝对不稳定性状态且在所有散射中占主导地位。给出了一维（1D）弗拉索夫模拟和二维（2D）PIC模拟，以验证在BSRS的绝对不稳定性状态下存在BSRS的SBS。在BSRS的绝对不稳定性状态下，BSRS的SBS甚至会比前向受激拉曼散射（FSRS）和SBS更强。因此，除了朗缪尔衰变不稳定性和激光能量吸收外，BSRS的SBS也是高电子密度区域中BSRS的一个重要饱和机制。
Zotero 插件