Plasma simulation studies of stimulated scattering processes in laser‐irradiated plasmas
Plasma simulation studies of stimulated scattering processes in laser‐irradiated plasmas
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DOI：
10.1063/1.861249
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发表时间：
1975-08
影响因子：
4.6
通讯作者：
D. Forslund;J. Kindel;E. Lindman
中科院分区：
文献类型：
--
作者：
D. Forslund;J. Kindel;E. Lindman
通过对周期和非周期等离子体的模拟，研究了受激布里渊散射和拉曼散射的行为。在低功率下的一维研究，大致定义为电子的振荡速度小于其热速度，倾向于支持空间理论。通常，在非周期性模拟中，静电波和电子加热的捕获非线性可以使反向散射的量在合理的水平上饱和。在高功率下，在周期性和非周期性模拟中，在饱和后发生x型断裂或波塌缩现象，这导致有质动力、电子压力和离子压力之间的平衡。讨论了随机调频激光器的模拟。简要介绍了二维模拟及其与一维结果的关系。
The behavior of stimulated Brillouin and Raman scattering is studied by a number of periodic and aperiodic plasma simulations. The one‐dimensional studies at low power, roughly defined by the oscillating velocity of an electron being less than its thermal velocity, tend to support the spatial theory. Typically, in the aperiodic simulations trapping nonlinearities of the electrostatic wave and electron heating can saturate the amount of backscatter at a reasonable level. At high powers in both periodic and aperiodic simulations an x‐type breaking or wave collapse phenomenon occurs after saturation which leads to an equilibration between pondermotive force, electron pressure, and ion pressure. Simulations of a random frequency modulated laser are discussed. Two‐dimensional simulations and their relationship to the one‐dimensional results are briefly mentioned.