双层丝阵Z箍缩内爆特性研究

项目名称： 双层丝阵Z箍缩内爆特性研究

项目编号： No.11275030

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 丁宁

作者单位： 北京应用物理与计算数学研究所

项目金额： 90万元

中文摘要： Z装置实验表明双层丝阵在Z箍缩产生强X光辐射源和形成动态黑腔辐射场方面有重要作用。但关于双层丝阵的等离子体不稳定性和动态黑腔理论研究尚不深入，有必要开展双层丝阵Z箍缩内爆特性理论研究。项目拟建立二维（r,θ）和（r, z）双层丝阵内爆动力学模型，合理描述双层丝阵内爆过程中丝阵等离子体的运动规律、磁场与电流分布、以及X光辐射；研究双层丝阵不同内爆模式的等离子体动力学特征，确定内爆动力学模式与驱动器和负载参数的关系；研究双层丝阵提高X光辐射功率的物理机制。研究双层丝阵动态黑腔相关的能量加载及黑腔壁特性，判断何种内爆模式下能获得更高的黑腔辐射温度。针对Z箍缩产生的X光辐射功率，提出PTS装置（10MA）双层丝阵优化设计方案及负载参数；针对动态黑腔辐射场，提出PTS装置双层丝阵负载优化设计，为PTS开展双层丝阵实验和动态黑腔物理实验研究提出一系列可行的解决方案。

中文关键词： Z箍缩；双层丝阵；X射线；动力学模式；动态黑腔

英文摘要： The experiments on the Z machine in Sandia National Laboratory show that nested-wire array has a very important role on Z-pinch produced strong X-ray radiation sources and dynamic hohlraum (DH) for the inertial confinement fusion (ICF) researches. However, the physical mechanism of nested-wire array to improve the quality of Z-pinch implosion is not well understood theoretically, it is thus necessary to carry out the theoretical and simulated researches of the characteristics of the nested-wire array Z-pinch implosion.This project will found appropriate dynamic models for the nested-wire array implosion in two dimensional (r,θ) and (r, z) coodinates, and then study its implosion processes, magnetic field and current distributions, and X-ray radiation production. Subsequently, the dynamic characteristics for the different implosion modes of the nested-wire array plasmas will be explored. Thus, the implosion dynamic modes, as well as the relations of the nested-wire array with the generator and load parameters, will be determined. In addition, the physical mechanism to improve X-ray radiation power by using the nested-wire array will be investigated. We will also discuss the related energy conversion and hohlraum wall effects of the nested wire-array plasma on the DH, and judge which implosion mode can generate hi

英文关键词： Z pinch；nested-wire array；X-ray；implosion dynamic modes；dynamic hohlraum