Spatial temporal theory of Raman forward scattering
Spatial temporal theory of Raman forward scattering
复制标题
拉曼前向散射时空理论
DOI：
10.1063/1.871728
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发表时间：
1996
影响因子：
2.2
通讯作者：
D. Hinkel
中科院分区：
文献类型：
--
作者：
C. Decker;W. Mori;T. Katsouleas;D. Hinkel
研究了短脉冲（<1 ps）高强度（I≤1018 W/cm 2）激光与等离子体相互作用下的拉曼前向散射。导出了一组耦合微分方程，描述了平面波泵浦下前向和近前向拉曼散射的时空增长。直接前向散射的精确解获得物理相关的初始/边界条件。此外，渐近行为在近前向角进行了比较，有限宽度分析中的傍轴射线近似。研究了拉曼前向散射的噪声源。这些结果的后果，目前和近期的实验进行了讨论。
Raman forward scattering is examined in regimes relevant to short‐pulse (<1ps) high‐intensity (I≤1018 W/cm2) laser‐plasma interactions. A set of coupled differential equations is derived which describes the spatial‐temporal growth of forward and near forward Raman scattering for plane wave pumps. An exact solution for direct forward scattering is obtained for physically relevant initial/boundary conditions. Furthermore, the asymptotic behavior at near forward angles is compared to finite width analyses in which the paraxial ray approximation is made. Noise sources for Raman forward scattering are examined. The consequences of these results to present and near term experiments are discussed.