Propagation and damping of nonlinear plasma wave packets.
Propagation and damping of nonlinear plasma wave packets.
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DOI：
10.1103/physrevlett.102.245002
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发表时间：
2009-06
影响因子：
8.6
通讯作者：
J. Fahlen;B. Winjum;T. Grismayer;W. Mori
中科院分区：
文献类型：
--
作者：
J. Fahlen;B. Winjum;T. Grismayer;W. Mori
非线性电子等离子体波包显示在包后部局部阻尼。共振粒子进入数据包的背面并线性阻尼前几个波长，从而将能量从后边缘带走并最终腐蚀数据包。这个过程可能会显着影响受激拉曼散射的重现和长期行为，因为预计非线性数据包将在传播散斑长度之前被侵蚀掉。还讨论了密度梯度对数据包传播的影响。
Nonlinear electron plasma wave packets are shown to locally damp at the rear of the packet. Resonant particles enter the back of the packet and linearly damp the first few wavelengths, thereby carrying energy away from the back edge and eventually eroding the packet. This process could significantly affect the recurrence and long-time behavior of stimulated Raman scattering because it is predicted that a nonlinear packet will erode away before it travels a speckle length. The effects of a density gradient on the packet's propagation are also discussed.