Generation of episodic magnetically driven plasma jets in a radial foil Z-pinch
Generation of episodic magnetically driven plasma jets in a radial foil Z-pinch
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DOI：
10.1063/1.3504221
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发表时间：
2010-11
影响因子：
2.2
通讯作者：
F. Suzuki-Vidal;S. Lebedev;S. Bland;G. Hall;G. Swadling;A. Harvey-Thompson;J. Chittenden;A. Marocch
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文献类型：
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作者：
F. Suzuki-Vidal;S. Lebedev;S. Bland;G. Hall;G. Swadling;A. Harvey-Thompson;J. Chittenden;A. Marocch
我们给出了磁驱动等离子体喷流形成的实验结果，首次展示了在实验室中产生幕式喷流/外流的方法。喷射是使用6.5μm厚的铝盘(径向箔)产生的，该铝盘受到来自鹊子发电机的1 mA、250 ns的电流脉冲[I.H.Mitchell等，Rev.Sci。Instrum。67,1533(1996)]。薄片的早期运动表现为磁压作用下质量的整体运动，并形成沿J×B力方向的表面等离子体。在膨胀的磁泡的轴线上形成后续的磁驱动射流之前，低密度等离子体填充了箔上方的区域。外流出现在∼30-40 ns的时间尺度上，它们的幕式性质是箔片中电流重联的结果，有助于在射流中形成电流驱动的不稳定性和从箔片中获得的质量分布。额外的电感由于..。
We present experimental results of the formation of magnetically driven plasma jets, showing for the first time a way of producing episodic jet/ouflows in the laboratory. The jets are produced using a 6.5 μm thick aluminum disk (a radial foil), which is subjected to the 1 MA, 250 ns current pulse from the MAGPIE generator [I. H. Mitchell et al., Rev. Sci. Instrum. 67, 1533 (1996)]. The early time motion of the foil is characterized by the bulk motion of the mass due to the magnetic pressure, together with the formation of a surface plasma following the direction of the J×B force. A low density plasma fills the region above the foil preceding the formation of subsequent magnetically driven jets on the axis of expanding magnetic bubbles. The outflows emerge in timescales of ∼30–40 ns and their episodic nature is the result of current reconnection in the foil, aided by the formation of current-driven instabilities in the jet and the distribution of mass available from the foil. The additional inductance due ...