Nonlinear theory of a quasimonochromatic packet of electrostatic waves in an inhomogeneous plasma
Nonlinear theory of a quasimonochromatic packet of electrostatic waves in an inhomogeneous plasma
复制标题
非均匀等离子体中准单色静电波包的非线性理论
DOI：
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发表时间：
1973
期刊：
影响因子：
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通讯作者：
D. Shklyar
中科院分区：
文献类型：
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作者：
Y. Istomin;V. Karpman;D. Shklyar
本文发展了弱非均匀等离子体中准单色静电波包与共振粒子相互作用的非线性理论。得到了相空间共振区的分布函数和波的非线性衰减（增量）的表达式。特别是，它示出的非线性增长率在大的距离从前边界是由捕获和未捕获的共振粒子的平均分布函数之间的差异。本文研究了弱非均匀等离子体中电子包非线性演化的定性特征。
A nonlinear theory is developed of the interaction of a quasimonochromatic packet of electrostatic waves with resonant particles in a weakly inhomogeneous plasma. Expressions are obtained for the distribution function in the resonance range of phase space and also for the nonlinear decrement (increment) of the wave. In particular, it is shown that the nonlinear growth rate at large distances from the front boundary is determined by the difference between the mean distribution functions of the trapped and untrapped resonant particles. A study has been made of the qualitative peculiarities of the nonlinear evolution of the packet in a weakly inhomogeneous plasma.