项目名称: 金属膜带阵负载Z箍缩消融特性研究
项目编号: No.11305154
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 数理科学和化学
项目作者: 叶繁
作者单位: 中国工程物理研究院核物理与化学研究所
项目金额: 30万元
中文摘要: 快Z箍缩过程能够产生高功率X光辐射,目前,丝阵负载Z箍缩驱动的动态黑腔被认为是实现聚变点火潜在的技术途径。本项目使用的带阵负载是由多条带状金属薄膜均匀排列在圆周上构成的柱形Z箍缩负载,国内外至今尚未见到该类型负载在Z箍缩物理或者应用研究方面的公开文献报道。我们认为,在相同线质量条件下,该类负载能够降低先驱等离子体份额;实现比大丝数单层丝阵内爆更好的等离子体密度分布均匀性,在未来大电流装置上开展的Z箍缩驱动动态黑腔研究中可能发挥重要作用。项目拟开展金属膜带阵负载Z箍缩实验,研究金属带上电流通道及其演化过程、负载消融过程、先驱等离子体时空分布和先驱等离子体分流等早期内爆特性,建立初步的带阵消融物理过程图像。
中文关键词: Z箍缩;金属膜;带阵;消融;
英文摘要: Fast Z-pinches produce intense pulsed x-ray radiations. Nowadays dynamic hohlraum driven by wire array Z-pinch is considered to be a potential technique for realizing thermonuclear ignition. In this project,we will employ cylindrical metalic ribbon array, a novel kind of load for fast Z-pinch experiments. The configuration of a ribbon array is identical to that of a cylindrical wire array except that thin metal ribbons replace the fine wires. Till now,few works about the physics or applications of Z-pinches with ribbon array have been done. It is expected that Z-pinches with this kind of load are able to produce a less proportion of the precursor plasmas and plasmas with a more uniform density profile, which would make the ribbon array a promising alternative for studying Z-pinch driven dynamic hohlraum on large scale pulsed power generators. Experiments using ribbon arrays will be carried out to explore the current paths on ribbons,the current distributions,the behavior of ablations and the temporal/spatial characterizations of precursor plasmas.
英文关键词: Z-pinch;metallic foil;ribbon array;ablation;