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Abstract The experimental system for electrically exploding single metal wire has been de-signed and manufactured. Expansion of the dense plasma column formed from an electricallyexploding Cu wire of diameter 30 μm has been studied with a high-speed photographer to obtainthe time-dependent radius (R-t) curve. The experimental results demonstrate that the mean ex-pansion rate of the dense plasma column is 1.94 μm/ns, 2.6 μm/ns and 3.75 μm/ns according tothe peak pulse current 4.5 kA, 7 kA and 9.5 kA respectively. The results can be beneficial to givinga profound understanding of the early stage of wire-array Z-pinch physics and to improvement ontheir design. 相似文献
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叙述了用光楔错位干涉与高速摄影技术相结合诊断电热化学发射装置中等离子体发生器产生的等离子体射流的方法,得到了等离子体射流的电子密度和温度等参数的分布。该方法有助于改进电热化学发射装置中等离子体发生器的设计及其效能的提高。 相似文献
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The experimental system for electrically exploding single metal wire has been designed and manufactured. Expansion of the dense plasma column formed from an electrically exploding Cu wire of diameter 30/~m has been studied with a high-speed photographer to obtain the time-dependent radius (R-t) curve. The experimental results demonstrate that the mean ex-pansion rate of the dense plasma column is 1.94μm/ns, 2.6μm/ns and 3.75μm/ns according to the peak pulse current 4.5 kA, 7 kA and 9.5 kA respectively. The results can be beneficial to giving a profound understanding of the early stage of wire-array Z-pinch physics and to improvement on their design. 相似文献
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为了较精确地对非理想爆轰波的传播进行计算,基于爆轰冲击波动力学(DSD)理论,研究了计算二维贴体坐标系中爆轰波阵面传播问题的Level Set方法。根据Ham ilton-Jacobi方程的Godunov差分格式,提出了非正交的贴体坐标系中Level Set函数方程的差分格式及其相应的数值方法。将Level Set方法应用于自行研制的二维流体动力学程序TDY2D得到编码TDY_DSD,对爆轰波的传播及爆轰驱动的实验模型进行了数值模拟计算,所得的计算值均与实验值符合较好。计算结果表明了TDY_DSD程序的正确性和有效性,具有较高计算精度。 相似文献
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小型脉冲激光器驱动高速飞片的实验研究 总被引:9,自引:1,他引:9
利用小型脉冲YAG激光器在能量 10 0~ 30 0mJ范围内成功驱动了 5 5 μm厚度 ,直径 0 5~ 0 8mm铝飞片 ,最高速度达到 6 6km s。详细介绍了激光驱动飞片的过程、实验方法和测试系统等 ,并对实验回收的样品进行了分析 ,结果显示飞片具有较好的平面性、完整性和重复性。利用Gurney理论和Lawrence模型对激光驱动飞片的过程进行了解析分析 ,理论结果与实验值吻合得较好 相似文献