| 表面绝缘对平面钨丝阵Z箍缩早期过程的影响 |
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| 引用本文： | 盛亮,李阳,黑东炜,袁媛,彭博栋,王亮平,李沫,张美,魏福利,赵吉祯. 表面绝缘对平面钨丝阵Z箍缩早期过程的影响[J]. 强激光与粒子束, 2014, 26(7): 075003. DOI: 10.11884/HPLPB201426.075003 |
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| 作者姓名： | 盛亮 李阳 黑东炜 袁媛 彭博栋 王亮平 李沫 张美 魏福利 赵吉祯 |
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| 作者单位： | 1.西北核技术研究所, 强脉冲辐射环境模拟与效应国家重点实验室, 西安 71 0024 |
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| 基金项目： | 国家自然科学基金青年基金项目(11105109); 强脉冲辐射环境模拟与效应国家重点实验室基础研究基金项目(SKLIPR1208) |
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| 摘 要： | 在"强光一号"装置上研究了表面绝缘对平面钨丝阵早期过程的影响。通过对实验结果的唯象分析,发现相对于标准丝阵,表面绝缘丝阵X射线辐射被强烈延迟,并与丝阵宽度有较强的依赖关系,在X射线辐射之前存在较强的阴极发射;表面绝缘丝阵X射线辐射副脉冲幅值是标准丝阵两倍,且存在较长的平台期,其单丝等离子体膨胀导致的温度降低效应比标准丝阵强;在快速内爆开始之前,两者形成了类似的宏观磁流体不稳定性结构。
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| 关 键 词： | 表面绝缘 钨平面丝阵 Z箍缩 早期过程 |
| 收稿时间： | 2013-12-09 |
Effect of surface insulation on early stage of tungsten planar wire array Z-pinch |
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| Affiliation: | 1.State Key Laboratory of Intense Pulsed Radiation Simulation and Effect,Northwest Institute of Nuclear Technology,Xi’an 710024,China |
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| Abstract: | The effect of surface insulation for the tungsten planar wire arrays was studied on QiangGuang-Ⅰ facility. Utilizing the phenomena analysis, the X-ray radiation of the surface insulated wire arrays (SIWA) is considerably delayed and the delay time is dependent upon the width of the wire array. Strong cathode emission is also observed in the SIWA Z-pinch experiments. The amplitude of X-ray plateau before the main pulse in the SIAW experiments is 2 times of that in the standard wire array (SWA) experiments. The duration of the X-ray plateau of the SIAW is longer than that of SAW. The cooler effect due to the single wire plasma expansion in SIAW experiments is much stronger compared with that in SAW experiments. The similar macro magneto hydrodynamics instability structure is observed in both SIAW and SAW experiments. |
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| Keywords: | surface insulating tungsten planar wire array Z-pinch early stage |
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