丝阵内爆实验条件重复性控制

Controlling of repeatability on experimental condition for wire-array implosion

在丝阵负载Z箍缩实验中实施了电流加载前真空下负载初始状态的监测,并分别采用新旧结构的电极进行了对比性实验研究,利用十分幅纳秒分幅相机成功获取了不同内爆阶段的实验图像。通过对实验结果的分析,讨论了电极结构和负载初始状态对实验结果的影响程度。实验结果表明:采用新装配方式的负载电极结构具有安装时间短、同轴性容易控制、负载现场安装就位精度高等优点;新研制电极和实施真空下负载状态的检测,有效减少了实验数据分散性,为实验负载参数优化设计提供了技术支持。

The initial state of pinch load in vacuum was monitored successfully in experiments about wire array loads. New and old load configurations were used to carry out contrast studies, and the nanosecond-frame camera was used to record images a- bout different plasma implosion phases. Influences on electrode configuration and the initial state of pinch load were discussed by analysing experimental results. The experimental results show that fixing time was shortened and coaxality was controlled easily by using the new load electrode configuration. They also show that the dispersibility of experimental data decreased by using new load electrode configuration and monitoring the initial state of pinch load in vacuum. The study provides technical support for opti- mization design of load parameters.