POLAR project: a numerical study to optimize the target design
POLAR project: a numerical study to optimize the target design
复制标题
POLAR 项目：优化目标设计的数值研究
DOI：
10.1088/1367-2630/15/3/035020
复制
发表时间：
2013
影响因子：
3.3
通讯作者：
Michel Koenig
中科院分区：
文献类型：
--
作者：
C. Busschaert;E. Falize;B. Loupias;C. Michaut;A. Ravasio;A. Pelka;R. Yurchak;Michel Koenig
现代高能密度设备使我们能够使物质达到密度、温度和速度的极端状态。严格的标度定律证明了相关的状态是可以达到的，并且这些状态是可重复实现的。POLAR项目使用强大的激光和适应的目标设计，相似实验旨在研究磁激变变量中发现的吸积冲击的形成和动力学。在天体物理学的尺度上，我们所考虑的系统是一列由磁场对准白矮星表面的等离子体。当物质以超音速撞击表面时，在柱体的底部形成激波并向上游传播。在本文中，数值模拟是为了描述的经验，并给出有关物理制度的期望，可达到在一个千焦耳设施的未来实验。特别地，讨论了我们的目标设计和改进的细节。
Modern high-energy density facilities allow us to bring matter to extreme states of density, temperature and velocity. Rigorous scaling laws proved that the relevant regimes could be reached, and those regimes are reproducibly achievable. Using powerful lasers and adapted target designs, similarity experiments in the POLAR project aim at studying the formation and dynamics of accretion shocks as found in magnetic cataclysmic variables. At the astrophysical scale, the system we consider is a column of infalling plasma collimated by a magnetic field onto the surface of a white dwarf. As matter hits the surface with supersonic velocity, a shock forms at the basis of the column and propagates upstream. In this paper, numerical simulations are presented in order to describe the experience and to give expectations concerning physical regimes reachable for future experiments on a kilojoule facility. In particular, our target design is discussed and improvements are detailed.