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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Spectral instability of Electronic Euler-Poisson System
电子 Euler-Poisson系统 谱不稳定性
2023/12/11
The focus of this presentation is the spectral (in-)stability of periodic waves for the electronic Euler-Poisson system, a hydrodynamical model for understanding electron dynamics in plasmas. It is fo...
Radiative instability of a relativistic electron beam moving in a photonic crystal
Radiative relativistic electron beam photonic crystal
2010/11/16
The radiative instability of a beam moving in a photonic crystal of finite dimensions is studied. The dispersion equation is obtained. The law $\Gamma\sim \rho ^{1/\left( {s + 3} \right)}$ is shown to...
针板电极荷电液体射流不稳定性分析（Analysis of Instability for Charged Liquid Jets with the Needle-plate Electrodes）
液体射流 不稳定性 静电场
2009/9/11
基于荷电液体射流的模型和广义坐标下的Lagrange方程，建立了静电场作用下无粘性液体射流的色散方程，并对该方程进行了数值求解，分析了若干因素对荷电液体射流的轴对称模型和非轴对称模型的影响。研究结果表明：随着电场强度的增大，荷电液体射流的最大扰动增长率增大。低电压时静电场对轴对称射流的不稳定性有显著作用，电压逐渐升高时非轴对称模型逐渐占据主导地位，最终导致液滴的破碎；随着射流半径的减小，荷电液体射...