在受激拉曼散射模拟中，捕获粒子不稳定性导致爆发。
Trapped-particle instability leading to bursting in stimulated Raman scattering simulations.
作者信息
Brunner S, Valeo E J
机构信息
Centre de Recherches en Physique des Plasmas, Association EURATOM-Confédération Suisse, EPFL, 1015 Lausanne, Switzerland.
出版信息
Phys Rev Lett. 2004 Oct 1;93(14):145003. doi: 10.1103/PhysRevLett.93.145003. Epub 2004 Sep 29.
Nonlinear, kinetic simulations of stimulated Raman scattering (SRS) under laser-fusion conditions present a bursting behavior. Different explanations for this regime have been given in previous studies: saturation of SRS by increased nonlinear Landau damping [K. Estabrook et al., Phys. Fluids B 1, 1282 (1989)]], and detuning due to the nonlinear frequency shift of the plasma wave [H. X. Vu et al., Phys. Rev. Lett. 86, 4306 (2001)]]. Another mechanism, also assigning a key role to the trapped electrons is proposed here: the breakup of the plasma wave through the trapped-particle instability.
激光聚变条件下受激拉曼散射（SRS）的非线性动力学模拟呈现出一种爆发行为。此前的研究对这种状态给出了不同的解释：通过增加非线性朗道阻尼使SRS饱和[K. 埃斯塔布鲁克等人，《物理流体B》1, 1282 (1989)]，以及由于等离子体波的非线性频移导致失谐[H. X. 武等人，《物理评论快报》86, 4306 (2001)]。这里提出了另一种机制，该机制也赋予俘获电子关键作用：通过俘获粒子不稳定性使等离子体波破裂。
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