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首页> 外文期刊>Journal of Experimental and Theoretical Physics >Generation of high-power electromagnetic radiation from the development of explosive and high-frequency instabilities in a system consisting of a relativistic ion beam and a nonisothermal plasma
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Generation of high-power electromagnetic radiation from the development of explosive and high-frequency instabilities in a system consisting of a relativistic ion beam and a nonisothermal plasma

机译：由相对论性离子束和非等温等离子体组成的系统中爆炸性和高频不稳定性的发展产生大功率电磁辐射

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摘要

We have investigated the possibility of generating explosive wave triplets and up-conversion of electromagnetic modes in a system consisting of a relativistic ion beam penetrating a strongly nonisothermal plasma. We derive here conditions for synchronism and the sign of the wave energy of the resonance triplets, and show that in this system it is possible to excite explosive or high-frequency instabilities. Based on an asymptotic method we derive and analyze truncated equations for the complex mode amplitudes. We show that the FrG "explosion" is stabilized by a nonlinear frequency shift, while the high-frequency instability is analogous to the "decay" of low-frequency modes. Unlike the cases treated in well-known papers, we find that the matrix coefficients and the coefficient that characterizes the nonlinear frequency shift are complex, which leads to new solutions to the equations for complex wave amplitudes, even under identical initial conditions.
机译：我们研究了在由相对论性离子束穿透强非等温等离子体组成的系统中，产生爆炸波三胞胎和电磁模式上转换的可能性。我们在这里得出同步的条件和共振三重态的波能的符号，并表明在该系统中可能激发爆炸性或高频不稳定性。基于渐近方法，我们导出并分析了复模振幅的截断方程。我们表明，FrG的“爆炸”是通过非线性频移稳定的，而高频的不稳定性类似于低频模式的“衰减”。与在著名论文中讨论的情况不同，我们发现矩阵系数和表征非线性频移的系数很复杂，即使在相同的初始条件下，这也导致了针对复杂波振幅方程的新解。

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