Efficient acceleration of a dense plasma projectile to hyper velocities in the laser-induced cavity pressure acceleration scheme

超高速撞击与等离子体生成的流固耦合模拟

Fluid-Solid Coupled Simulation of Hypervelocity Impact and Plasma Formation

本文提出一种流固耦合多物理场计算方法，耦合可压缩Navier-Stokes方程与Saha电离方程，模拟铜弹丸在氖气中撞击玻璃靶体的超高速撞击过程，揭示了撞击速度超过4 km/s时周围气体会发生电离。

利用 PEGASUS 轨道炮提高所用能量的实验

Experiments to increase the used Energy with the PEGASUS Railgun

本文介绍 ISL 在 PEGASUS 分布式供能轨道炮上开展的实验，通过研制含有效载荷段的新型弹丸，研究在 3.8–4.8 MJ 一次能量下将更重弹丸加速至 2000 m/s 以上的效果。

Energy loss of ions by electric-field fluctuations in a magnetized plasma

The results of a theoretical investigation of the energy loss of charged particles in a magnetized classical plasma due to the electric field fluctuations are reported. The energy loss for a test particle is calculated through the linear-response theory. At vanishing magnetic field the electric field fluctuations lead to an energy gain of the charged particle for all velocities. It has been shown that in the presence of strong magnetic field this effect occurs only at low-velocities. In the opposite case of high-velocities the test particle systematically loses its energy due to the interactio…

Interaction and propagation characteristics of two counter and co-propagating Mach cones in a dusty plasma

We theoretically investigate the interaction and propagation characteristics of two co/counter propagating Mach cones triggered by two projectile particles moving with supersonic velocities in the same/opposite directions through a dusty plasma medium. The Mach cone solutions are obtained by solving a model set of fluid equations for a heavily charged dust fluid that includes the contributions of the projectile particles in the Poisson equation. The density profiles and velocity vector maps of the Mach wings show interesting structural changes when they interact with each other and form patter…

Calculations on the stopping power of a heterogeneous Warm Dense Matter

The stopping power of Warm Dense Matter (WDM) is estimated by means of the individual contributions of free electrons and bound electrons existing in this special kind of matter, located between classical and degenerate plasmas. For free electrons, the dielectric formalism, well described in our studies, is used to estimate the free electron stopping power. For bound electrons, the mean excitation energy of ions is used. Excitation energies are obtained through atomic calculations of the whole atom or, shell by shell in order to estimate their stopping power. Influence of temperature and densi…

温度各向异性磁化等离子体中离子束的停止

Stopping of ion beam in a temperature anisotropic magnetized plasma

利用弱耦合等离子体的介电理论，研究了温度各向异性磁化电子等离子体中离子的阻止本领。该分析基于离子的能量变化远小于其动能的假设。针对弱和强磁场（即，对于小于和大于等离子体频率的电子回旋频率），以及对于低和高离子速度。发现摩擦系数除了包含通常的与速度无关的摩擦系数外，还包含一个反常项，该反常项随弹丸速度的接近而发散。这个反常项的物理来源是电子的回旋运动与抛射离子产生的长波低频涨落之间的耦合。