双脉冲电流generator驱动的预处理线阵Z箍缩
Preconditioned wire array Z-pinches driven by a double pulse current generator
摘要：
抑制芯-冠结构显示出很强的潜力，作为一个新的突破，在X射线电源的线阵列Z箍缩。本文介绍了用新型双脉冲电流发生器"秦-1"装置抑制芯-电晕结构及其烧蚀的实验研究。"秦一号"装置将一个~10 kA的20 ns预脉冲发生器与一个~1 MA的170 ns主电流发生器相耦合。在预脉冲电流驱动下，两条铝丝阵列被加热到气态，而不是芯-冠结构，主电流驱动下的铝蒸气内爆没有烧蚀，也没有拖尾质量。由于不均匀烧蚀形成的MRT不稳定性的种子被抑制，但是内爆过程中的磁瑞利-泰勒不稳定性仍然是重要的，需要进一步研究这种气化丝阵的磁瑞利-泰勒不稳定性的产生和发展。
英文摘要：
Suppressing of the core-corona structures shows a strong potential as a new breakthrough in the X-ray power production of the wire array Z-pinches. In this letter, the demonstration of suppressing the core-corona structures and its ablation using a novel double pulse current generator "Qin-1" facility is presented. The "Qin-1" facility coupled a ~10 kA 20 ns prepulse generator to a ~ 1 MA 170 ns main current generator. Driven by the prepulse current, the two aluminum wire array were mostly heated to gaseous state rather than the core-corona structures, and the implosion of the aluminum vapors driven by the main current showed no ablation, and no trailing mass. The seeds for the MRT instability formed from the inhomogeneous ablation were suppressed, however, the magneto Rayleigh-Taylor instability during the implosion was still significant and further researches on the generation and development of the magneto Rayleigh-Taylor instabilities of this gasified wire array are needed.
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