Collimated plasma jets at high velocities are intriguing astronomical phenomena in the universe and are of great importance for the extrapolation of the evolution of their host systems.
Patches of ionization are common in the polar ionosphere where their motion and associated density gradients give variable disturbances to High Frequency (HF) radio communications,over-the-horizon rad
激光等离子体耦合过程的吸收、散射和各种非线性相互作用过程发展的研究是激光等离子体相互作用研究的基本内容。由于散射光和等离子体的状态密切相关,散射光的特性反映了等离子体状态随时间的演化过程,因此开展散射光特性研究将会深化对激光等离子体相互作用的物理模型及物理规律的认识,同时为数值模拟程序提供基础物理数据来校验程序,检验物理模型的精度。
The dust acoustic solitary waves have been numerically investigated by using one dimensional electrostatic particle-in-cell(PIC) method.The limiting amplitude of the dust acoustic solitary waves is fo
Coronal mass ejections (CMEs) are magnetized fully-ionized gases in the heliosphere.The collision and interaction of CMEs frequently happened,and may have impact on the space weather forecasting.Howev
在激光惯性约束聚变(ICF)实验诊断领域,X光针孔相机可用来检测激光打靶精度和穿孔效率,监测焦斑形状,获得内爆信息等,结构简单、使用方便,是ICF实验中的基础诊断设备之一[1-2]。
For advanced tokamaks, magnetohydrodynamic(MHD) instabilities, especially external kink modes[1], limit plasma pressure. It is well known that external kink modes can be fully stabilized by a surround
在托卡马克的基座(pedestal)区域,大的密度和温度梯度导致在边界形成局域峰值电流,边界电流驱动的扭曲模在边界局域模中扮演了重要的角色。使用CORSICA程序,我们构建了一系列具有不同边界电流的平衡位形,并保持压强和总电流不变。
本文研究学习了有关表面等离子体激元(SPP)的波导来提高亚波长透过金属-介质-金属波导的传输效率,提出了一个新颖的纳米级金属-绝缘体-金属(MIM)型亚波长等离子体波导分束器结构,该模型是建立在著名的类比MDM波导和微波传输线理论的基础上[1,2,3],利用时域有限差分法(FDTD)方法进行仿真模拟[3],将P偏振波长为1500nm的TM高斯光束入射到设计结构入射端口A,采用Drude-Loren