Wire Exploding in a Focus of Converging Cylindrical Shock Wave in Water - Introductory Remarks

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI:10.1109/PPC.2005.300597

K. Kolacek, J. Schmidt, V. Prukner, P. Šunka, O. Frolov, J. Straus, M. Martinkovả

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引用次数: 7

Abstract

It is expected that, just as the proximity of a wall stabilizes a Z-pinch in a capillary, the proximity of a wall (solid or liquid) can also stabilize an exploding wire placed in a capillary or in liquid (water), the density of which can be further increased by a suitably focused shock wave. A wire explosion will be used in our new apparatus CAPEX-U (current amplitude 100 kA, quarter period 70 ns) with free optical axial access to both (high voltage and ground) electrodes and with a four-channel laser- triggered main spark gap. As a driver for converging cylindrical shock waves in water a separate test apparatus was designed and assembled: a strong acoustical wave will be generated at the cylindrical chamber-surface (covered by porous ceramics) by a multi-streamer corona-like discharge that burns to a co-axial cylindrical mesh/foil electrode. Expected pressure amplitude at the axis approaches 1 GPa. Applications of wire explosion in the focus of a cylindrical shock wave in water to inertial confinement fusion as well as to soft X-ray lasers will be briefly mentioned.

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钢丝在水中汇聚圆柱冲击波焦点处爆炸——导言

可以预期，就像靠近壁面可以稳定毛细血管中的Z-pinch一样，靠近壁面(固体或液体)也可以稳定放置在毛细血管或液体(水)中的爆炸导线，其密度可以通过适当聚焦的激波进一步增加。电线爆炸将用于我们的新设备CAPEX-U(电流振幅100 kA，四分之一周期70 ns)，自由光轴访问(高压和接地)电极，并具有四通道激光触发的主火花间隙。作为水中圆柱形激波汇聚的驱动装置，设计并组装了一个单独的测试装置:在圆柱形腔体表面(由多孔陶瓷覆盖)，通过多流光状电晕放电燃烧到同轴圆柱形网状/箔电极上，产生强声波。轴上的预期压力振幅接近1gpa。本文将简要介绍在水中圆柱激波聚焦下的线爆炸在惯性约束聚变以及软x射线激光中的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2005 IEEE Pulsed Power Conference

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