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首页> 外文会议>IEEE International Conference on Plasma Science >Instabilities and the Implosion Dynamics of Gas-Puff Z-Pinch Experiments*
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Instabilities and the Implosion Dynamics of Gas-Puff Z-Pinch Experiments*

机译：充气Z型捏试验的不稳定性和内爆动力学*

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Summary form only given. The dynamics of argon and neon gas puff z-pinch plasmas are studied on COBRA, Cornell's pulsed power generator. COBRA can produce current pulses with rise times ranging from ~100 ns, with 0.7 MA - 1.1 MA peak current, to ~240 ns with about 0.9MA peak current. This provides a way to drive gas-puff plasmas that do not have time to pinch during the current rise time, as well as plasmas that are imploded by the current pulse. Radial tailoring of the gas puff mass-density profile using a triple-nozzle coaxial valve (two annular gas puffs and a central jet) enables production of both more stable and less stable (in regards to the magneto-Rayleigh Taylor instability) z-pinch implosions. A 527nm, 10J Thomson scattering diagnostic laser enables probing of the flow dynamics and plasma conditions of these implosions at a single time but at multiple spatial locations and with spatial resolution ranging from ~0.25 - 1mm. Extreme ultraviolet imaging and laser schlieren imaging at multiple times enable monitoring of the implosion morphology as a function of time.
机译：仅提供摘要表格。在康奈尔脉冲发电机COBRA上研究了氩气和氖气z夹点等离子体的动力学。 COBRA可以产生上升时间范围从〜100 ns（峰值电流为0.7 MA-1.1 MA）到〜240 ns（峰值电流为0.9MA）的电流脉冲。这提供了一种方法来驱动在电流上升时间内没有时间收缩的充气等离子体以及被电流脉冲爆裂的等离子体。使用三喷嘴同轴阀（两个环形气体抽吸和一个中央喷嘴）对气体抽吸质量密度曲线进行径向调整，可以生产既稳定又不稳定的（关于磁瑞利泰勒不稳定性）z夹内爆。 527nm，10J的Thomson散射诊断激光器可在单个时间但在多个空间位置以〜0.25-1mm的空间分辨率探测这些内爆的流动动力学和等离子体条件。多次进行极紫外成像和激光schlieren成像，可以监测随时间变化的内爆形态。

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